Factors that effect achievement on BTEC level 3 extended diploma in Literature review

Factors that effect achievement on BTEC level 3 extended diploma in sport courses - Literature review Example This is because college graduates will, on average, make a million or more – throughout their working lives – above their non-graduate counterparts that went to the high school level. The bad news in the way of student achievement, which affects the success of BTEC level 3 courses, include that enrolment and persistence levels among learners from low-earning communities remains lower. The groups affected include those from different backgrounds, including native and non-natives. The case is more severe for those suffering from disabilities. The other issue is that the preparation offered at high school is not sufficient, and in pace with the interests of those attending college, therefore, this affects their performance levels at the BTEC level 3 course. This report will explore the wide array of critical issues that affect student achievement at the BTEC level 3 sports course. Factors that lead to low college achievement The situation of being disadvantaged is believed to be the leading cause of low college achievement (Sylva et al., 2004). Such disadvantage is mostly associated with poverty, which makes it difficult for the students to access basic resources such as proper housing, diet and health. In connection with this is unfavourable home learning environment, including the inability of parents in supporting their children in achieving their educational goals (Sylva et al., 2004). The home learning environment is connected to other factors such as parental educational levels, social class as well as what parental involvement in children’s affairs. Educational performance is also associated with cognitive factors, where children of professional parents are found be affected by cognitive deficit than their counterparts from non-professional backgrounds (Feinstein, 2003; Melhuish et al., 2001). Also, children from poor socio-economic status have problems in developing good language skills, which affect their comprehension and learning as well as numeracy and acquisition when they join BETC level 3. Children from poor backgrounds also tend to interact less with their parents, hence they end up receiving little or no parental support, a situation that also hinder their educational achievements when attending their BETEC level 3 (Clegg and Ginsborg, 2006). Gender Low achievement in education has put many students at a disadvantaged position. However, it is important to note that different groups in the population react in a different way depending on their circumstances. OECD studies have shown that, in England, girls outperform boys (Sylva et al., 2004). Elsewhere, Machin and McNally (2005) argue that gender gap has really affected education in the UK, even though the general achievement for both gender has improved. The gender aspect reveals that low academic achievement as a result of low being disadvantaged is very inconsistent, for example because girls from the same family are known to perform differently (Sincl air, 2007). A study published by UNICEF concerning children welfare in rich countries reported the UK at the last ranking out of 21 countries, hence attracting a lot of attention. Some of the factors that led to the poor ranking including the adolescent behaviour which in turn is attributable to background factors such as poor parenting. Margo and Dixon (2006) notes that an inconsistent number of those

Qualities I Lacked to Work Effectively in a Group Personal Statement

Qualities I Lacked to Work Effectively in a Group - Personal Statement Example Being an egocentric person, the situation was too difficult for me to survive. Being a person who always liked to outperform others and too intolerant in failures, I found the situation humiliating far beyond my expectations. Along with these, the hard reality hit my mind that my abilities were not as good as I expected and I had a long way to go to prove my mettle. It became a nightmare for me to work in a group in the field. Many a time, I found my seniors engaging other members in the team with works that I could do better and adding to my woes, I always erred or had insufficient knowledge in the ones I was handed. I was getting criticized but had no way to react as I found myself in a world where no one seemed interested in recognizing the talent of another one; instead, everyone was looking for ways to undermine others. It was a picture that I never dreamt of. There were two things that I lacked; lack of knowledge in certain specific areas and lack of experience. It was too conf using for me to take a decision; on one hand, I wanted to quit the profession forever and on the other, I wanted to prove my abilities after getting the required qualifications. Finally, I decided to put off my ego and asked my tutor about the future course I had to adopt. She was more than ready to provide advice and on her advice and support, I decided to join this course so that I can improve my knowledge and have a new beginning with sufficient knowledge. In addition, I wrote to MSF after joining my course and I am advised to complete my studies to apply for even better positions in MSF. Now, I am happy that I did not lose heart and give up the idea. Feelings – looking in The incident made me look deep into the wide variety of emotions that ruled my mind at that time. As I already mentioned I had an egalitarian nature and I had a problem accepting suggestions and advice and I always nurtured the feeling that I am better than others and it was so in my academic pursuit. Ho wever, out in the field, I found it hard to digest that what I do just goes wrong or the workplace requires more ability than I possessed. It was totally indigestible and unbelievable in the beginning as my ego did not accept it that easily. Still, I knew very well that I could do much better than what many others did but had no opportunity. I found it humiliating as I was very often criticized for the lack of knowledge. Now I have to accept the fact that the reason behind my misery at work was mostly because of my ego and lack of knowledge compounded with my dislike to seek help from others. However, the feeling of utter disappointment made me seek help, though reluctantly, and when I sought advice and became ready to accept, the solution was immediate.  

A Property Valuation Report Commerce Essay

A Property Valuation Report Commerce Essay Introduction In recent years, the real estate market becomes a focal point. Property value may change by the influence of the government, social, economic and environmental forces. Demographys report shows Australian home prices to be little increased in 2011, driven by the slow pace of construction approvals, strong immigration, and an economy that hasnt experienced a recession in nearly two decades. (Business day, 2011)These forces will affect the real estate markets up or down. This task focuses on the property inspection and valuation and specifically discusses a valuation of Burwood Vic. First it describes the external components and internal inspection of the house. Then it analyses what factors would affect the property value. After that, the market valuation approach is undertaken and five recently comparable sales within the local area are provided, with the valuation and details of each house being discussed. There are some opinions and discuses shown by references, graphs, images and R Pdata website finding. Current state of the residential market 1In recent years Melbourne real estate market is more active, with the house price gradually rising in the trend. And key fundamentals are in high demand, which is created by population growth in the city of Melbourne. There is a serious supply and demand imbalance in the Australian residential property market. Melbourne has major problems in meeting demand for new housing and is not building enough apartments and houses currently .Different regions in the Melbourne have different prices. According to Residex, houses grew by 14.3% and units by 12.3% in 2010. And Melbourne is now the second highest priced median housing market in the country behind Sydney. Besides, interest rate rise in 2010, which was influence by the Australian economy, grew well above its trend rate at 0.9% for 2009. (Iron fish, 2010) This incredible result, along with solid employment figures and buoyant business and consumer confidence have all but guaranteed the return of interest rates to a normal level by the end of the year .( Iron fish,2010). On the other hand, the secondhand room trade in Melbourne is very active, with about 65% people in Melbourne renting the private house. The RP Date shows that rent houses price is increasing 35% in the last 3 years. This is why the more investors see the high return in the property and choose to invest in real estate. Local suburban market The Burwood housing market has been increasing between 2002 and 2010 with the median house price around $200,000. At present, the May 2010 median house price is at $250,000 while unit prices average $280,000 (Domain, 2010). Between May 2002 and 2010 the Burwood property market has increased annually on average by 12%, however with the rise of interest rates on mortgage repayments, according to the Real Estate Institute of Victoria, the suburban market is likely to ease as housing becomes less affordable (REIV, 2010). In terms of the local suburban market with reference to the housing market, the property price in Burwoods long term trend is increase for house and units. The median price for house in year 2010 is increasing, but the price for units is going down. (Domain, 2010) 2 Source form: RPData.com.au Factors affecting home value There are major factors affecting the housing value. To sum up, first is the urban employment opportunities. The second is the secondhand market is activated. The third one is the government policies. In this section we will examine particularly how market and government forces affect the houses value. The government force can have a great impact on property value. In the 2010, VIC government increased Built permit license, the number of Home Starter allowance is grow 30 %.( RP Data, 2010). Government policies plan stimulates the economy and property market. Economic forces mainly in the external economic factors are: employment, wages level and occupancy rate. Related to the employment opportunities, higher income means high demand, this is an external factor to affect the house value. And Interest rates are a major component to a property market since high interest rates increase the added expense in borrowing money from banks. On the contrary, low interest tends to drive demand of the property result in an upward trend. In additional, KEY value influence ¼Ã… ¡ Access to workplace, shopping centers and culture facilities Transport Services Quality of schools 3Reputation of the area Residential atmosphere Supply of land Private land use restrictions ( lecture notes, topic 3) About this house- share house, a major influence is firstly, location. House prices most significant influence factor is the location, location can decided how good the most important factor is the traffic. Secondly, it is CBD. Business Centre is to determine the prices for key factor, located in the business centre will determine the house price growth fast. Lastly, its the environment. Including the ecological environment and human and culture environment, economic environment, any environmental conditions will improve property appreciation. Ecological environment is to observe without air and water pollution and so on, if inside the residential area have plenty of green space or garden, this area will fit for live in, and some improvements. Property inspection The physical characteristics of the Johnston property were examined as a result of a visual inspection on the 20th of January, 2011. The external components were first assessed, including boundary dimensions and improvement areas, Site characteristics. Details of the legal description and land, Land Channel report. And a description of the land characteristics, services and planning controls. Then, the inspection of the internal features of the property will be examining, analysis each room covering floors, walls, and condition of the room. External plan of the lands 4The image below is a cadastral map portraying, the propertys location on the street. The map from state government Victoria and google map. Description external Features Site size Encompassing 828 square meters, the Johnston site has two levels of the house. In general, the higher size the site attracts if it has higher utility. Site shape 5The site width measures to be about 17 metres and the length about 40 metres. The sites dimensions also contribute towards the property are the biggest area utility. Site Access The Johnston state has two direct accesses to the propertys appeal. From the highway having one access point, the other point is on the right through the road. The site is easy and continence to get in. Zoning The Johnston property is located in the Residential 2 Zone, and last year, the Victoria government zoned the areas of the distribution, from the city to Vermont south all cover the zone 1, ,that meaning that the site highest and best use in the residential development ,and develop the transport. Topography In this area, where the topography around the site, there are almost houses and several apartments. Due to the wide and height range of the zoning limitations, so the site used the residential house or the two-level units. At the Johnston site, the topography is used for the family housing. Available Utilities The Melbourne government makes the available utilities for the residential house people. Including services: electricity, water, gas, high -speed internet, Drainage and sewerage, security. These services increase the residential development and contribution. Environment The local environment is covering a variety environmental factors, climate, temperature, humidity also influence the environment. Historically the weather is not affect the Johnston site area. The air quality seems to be good, there is no factory near the site, make green by planting trees, landscaping of residential area. Descriptions Internal inspection 6Living comfort and appeal are exemplified in the propertys aesthetics and internal components. There are 3 bedrooms, a living room and 1 bathroom. Its an old brick house with a large backyard. Brief property description Property layout House is located the face south, the front door leads into the entry corridor, in front of the corridor is the bedrooms, entry the hallway, beside the wall is the large walk-in wardrobe, walk through the hallway, on the left is the bathroom and toilet, along the hallway is the laundry room, next the laundry is the kitchen, with the dining room with together in the middle of the house. In the dining room there is the other bedroom here, the entrance to the hallway, there are two bedrooms beside laundry two sides. The back garden is the through the hallway, open the door near the laundry room. Big balconies have been seeing. Downstairs is the garden. Hot/Cold water services Hot/ cold service provide the convince way to the life. Cold and hot water are made available at each water pipe, at kitchen, bathroom, back garden, and laundry room. This provide a help to water condition, using the hose down a garden, its helpful and easy for living. And the cold water can drink directly. Cold water was reused after chemical treatment, it is safe way. Air- conditioning /Heating systems There is the heating and air-conditioning installed in the house. Making a comfortable lifestyle. When temperature is below the specific point, the heating or air-conditioning will automatically start mode. 7 Room Descriptions Main bedroom The main bedroom is a medium-sized room with one large window that overlooks the small front garden and grows flowers and plants. Big wardrobe is inside the wall, double size bed, with wall-to-wall carpeting. Two sides to cover with yellow wallpaper, this room are location is backlight, although in the hot summer, it is still feel comfortable. And a floor lamp and bedstand in the two sides of bed. And has double window curtain. 8 Kitchen Located in the back of the house, the kitchen is with the living room together, the cupboards is made of the solid timber is large to put the whole things, there are two large cupboards the kitchen floor is a tiled floor, it is easy to clean. A large dinning-table and six chairs near the pantry. In addition, on the other side are the refrigerator, oven, and microwave oven. There is a kitchen ventilator in above the stove. The sink and tap are easy to use, there are hot and cold water from the two points, easy way. All things in kitchen have the good conditions. Bedroom * 3 Other bedrooms including: Corner -Big Screen 9-Entry Door -Carpet -Desk -floor lamp -double size bed Walls: -Shelves -double window curtain -shutter -Windows -Wallpaper -wardrobe Bathroom The main bathroom is Skid-free surface -cabinet -bath tub 10-shower bath Shutter ventilating fan Coat hanger Flush toilet Living room The living room is located at the middle of the residence house, there are several large sofas in around the tea table, in front of the table is the TV and DVD table, the other side is the garden, open glass door can directly enter the back garden. In additional, can enter the carport. 11 DETAILED PROPEONRTY VALUATION A property valuation was undertaken for Johnston Street, Burwood on the 20th of January 2011. In this section, the Burwood suburb will be examined to evaluate the current market price for the subject property. Source From the myrpdata.com 12 Subject property 20 Johnston Street Burwood VIC 3125 Property type: house Attributes: 3 bedrooms 1 bathroom 1 Toilet 4 lockup Garages Sale Price:    $478,000 Sale Date:    27/09/03 Local Govt: Burwood Distance To: CBD 18km Highest price paid last 3 years: $1,000,000 Lowest price paid last 3 years: $375,000 Average land size houses: 893 sqm Median Sold Price: $ 750,000 13 Features: Balcony, courtyard, garage, Wardrobe, kitchen, bathroom, living room Situated within close proximity to: 75 tram station (200m), Deakin University (1.4km), Burwood shopping center (2.5km) On the market history for Sale PUB.Date Sale Detail Agency 27/09/03 Normal sale $300,000-$400,000 Barry plant DOHERTY REAL ESTATE 20/09/03 Normal sale $300,000-$400,000 Barry plant DOHERTY REAL ESTATE 06/09/03 Normal sale $300,000-$400,000 Barry plant DOHERTY REAL ESTATE 04/09/03 Action-12:00pm 27/09/03 On site Barry plant DOHERTY REAL ESTATE BLACKBURN Source from Rpdata.com.au 14 Market comparisons The 5 properties below are a selection of sales chosen from the Australian property monitors database -RPdata. They are ranked by their superiority to the subject property and reflect comparable characteristics. They are all located within Burwood. Burwood 3125 26 Brockhoff DR Description Dwelling type: House Bedrooms: 4 Bathroom: 2 Land area: 448sqm Car accommodation: 2 Distance from subject property: Nearest tram station: 2.6km Sale Price: $ 610,000 Sale listed: end 26/08/10 15 Burwood 3125 3 Conservatory DR Description Dwelling type: House Bedrooms: 4 Bathroom: 2 Land area: 425 sqm Car accommodation: 2 Distance from subject property: Nearest train station: 2.4km Sale Price: $560,000 Sale listed: 26/11/ 16 Burwood 3125 41 Leopold st Description Dwelling type: House Bedrooms: 4 Bathroom: 1 Land area: 741 sqm Car accommodation: 1 Distance from subject property: Nearest tram station: 2 km Sale Price: $ 778,000 Sale listed: 05/10/10 17 Burwood 3125 9 Pescott CL Description Dwelling type: House Bedrooms: 4 Bathroom: 2 Land area: 502 sqm Car accommodation: 2 Distance from subject property: Nearest tram station: 2.6 km Sale Price: $ 646,980 Sale list: 08/01/11 18 Burwood 3125 5 Roadway Ct Description Dwelling type: House Bedrooms: 4 Bathroom; 2 Land area: 378sqm Car accommodation: 2 Distance from subject property: Nearest tram station: 1.8 km Sale Price: $ 850,000 Sale date: 25/07/10 19 House price estimate Address: 20 Johnston Street, Burwood Vic 3125 Valuation date: 2011/01 Valuation: $650,000 Valuation range: $600,000-680,000 It is based on the comparability of the sales to the subject property and widens the scope of the valuation. Based on the comparable sales and an evaluation of property markets, the Burwood property value will range between $600,000-$680,000. The valuation is based on current market circumstances so changing market conditions will alter the value of the property. Estimate compared to median price The current estimated market price for this property is $750,000 above the current median house price in Burwood. Conclusion To analysis the above the property, estimate a propertys value is not easy to say increase or decrease, need to consider different forces, such as marketing situation, government policies, economic forces , and environmental change. Melbournes residential property will make another steady start in 2011 and continue to do so in the long term. This assignment focuses on the property situated at 20 Johnston Street, Burwood Victoria where, both Australian and local markets were analyzed, the property was inspected and finally was valued. As always, look at the Comparisons property within the Burwood in Melbourne, real estate value is continuing to be good trend for property investment in the future. 19

Jane Eyre :: essays papers

Jane Eyre Jane’s arrival at the Thornfield Charlotte Bronte’s Jane Eyre displays three types of relationships possessing different purposes. These connections are established at Thornfield after Jane becomes a governess and accepts the position at the estate. The first relationship is the one that forms between Mrs.Fairfax, the housekeeper, and Jane. Another relationship that begins upon arrival at Thornfield is the one that Jane possesses with Adele, her pupil. The last and most important relationship that begins is that of Mr. Rochester and herself. These connections contribute to the crucial development of Jane’s persona. The first relationship Jane is susceptible to is the one established between her and Mrs. Fairfax. Jane believes Mrs. Fairfax to be quite generous host because at first Jane has the notion that Mrs.Fairfax is the owner. She then discovers that she is the housekeeper. She feels better knowing that the kind behavior exhibited is not unusual because Mrs.Fairfax is but the housekeeper and not the owner. Jane feels better knowing that she can act more comfortably. Jane feels satisfaction as the housekeeper tells her how content she is now that she has a companion that is worthy to participate in discussion. She believes the other servants can not hold a conversation very well. Mrs. Fairfax’s predictable kindness allows Jane to feel more at ease with her. In a way it can be seen that Mrs.Fairfax serves almost as a mother figure to Jane. Another relationship that I noticed is the unique one that is shared between Adele and Jane. Adele is presented as the spoiled pupil who although quite the fidgety, loquacious child wins a portion of Jane’s heart. The relationship that is formed due to the large amount of time spent together is one that happens not only because of fondness but it is one that is inevitable. The bond begins to take on the appearance of a mother daughter relationship because Jane controls Adele’s actions (or tries) and Adele seems very attached to Jane. The odd relationship that takes shape between Mr.Rochester and Jane is one that becomes serious gradually. It seems to give Jane pleasure that Mr.Rochester believes her to be of intelligence that is peculiar for a schoolgirl. The bluntness that they share in a way shows flirtation between the characters but then the way that Rochester refers to Jane as little friend shows him as a type of father-like portrait. Jane Eyre :: essays papers Jane Eyre Jane’s arrival at the Thornfield Charlotte Bronte’s Jane Eyre displays three types of relationships possessing different purposes. These connections are established at Thornfield after Jane becomes a governess and accepts the position at the estate. The first relationship is the one that forms between Mrs.Fairfax, the housekeeper, and Jane. Another relationship that begins upon arrival at Thornfield is the one that Jane possesses with Adele, her pupil. The last and most important relationship that begins is that of Mr. Rochester and herself. These connections contribute to the crucial development of Jane’s persona. The first relationship Jane is susceptible to is the one established between her and Mrs. Fairfax. Jane believes Mrs. Fairfax to be quite generous host because at first Jane has the notion that Mrs.Fairfax is the owner. She then discovers that she is the housekeeper. She feels better knowing that the kind behavior exhibited is not unusual because Mrs.Fairfax is but the housekeeper and not the owner. Jane feels better knowing that she can act more comfortably. Jane feels satisfaction as the housekeeper tells her how content she is now that she has a companion that is worthy to participate in discussion. She believes the other servants can not hold a conversation very well. Mrs. Fairfax’s predictable kindness allows Jane to feel more at ease with her. In a way it can be seen that Mrs.Fairfax serves almost as a mother figure to Jane. Another relationship that I noticed is the unique one that is shared between Adele and Jane. Adele is presented as the spoiled pupil who although quite the fidgety, loquacious child wins a portion of Jane’s heart. The relationship that is formed due to the large amount of time spent together is one that happens not only because of fondness but it is one that is inevitable. The bond begins to take on the appearance of a mother daughter relationship because Jane controls Adele’s actions (or tries) and Adele seems very attached to Jane. The odd relationship that takes shape between Mr.Rochester and Jane is one that becomes serious gradually. It seems to give Jane pleasure that Mr.Rochester believes her to be of intelligence that is peculiar for a schoolgirl. The bluntness that they share in a way shows flirtation between the characters but then the way that Rochester refers to Jane as little friend shows him as a type of father-like portrait.

Jamba Juice Essay

Introduction Jamba Juice is a retailer of beverage and food offerings, owns, operates, and franchises stores in US and different countries. It is the first ever company to offer juice products made with fresh and natural fruits. Jamba Juice was conceived and founded in April 1990 by Kirk Perron, an avid cyclist and healthy lifestyle advocate who opened his first store in San Luis Obispo. It was incorporated in 1990 as Juice Club, Inc. in San Luis Obispo, California. Presently, there are 809 stores globally, Canada, South Korea and Philippines. MISSION: â€Å"To become the world’s leading blender of fruit and other naturally healthy ingredients.† VALUES: â€Å"F.I.B.E.R which stands for fun, integrity, benefits, excellence andresults.† Products and ServicesIt offers fruit smoothies, fresh juices and teas, coconut water, hot oatmeal made with organic steel cut oats, organic tea lattes, fruit and veggie smoothies, frozen yogurts, breakfast wraps, salads, sandwiches, California flatbreads, and various baked goods and snacks; provides catering services for business meetings, corporate getaways, client luncheons, and other events. â€Å"Boosts† are added nutritional supplementation, like extra fiber or calcium and there are boosts that can be added to the smoothies. The idea of boosts in the products is a very innovative idea and Jamba juice is the only one company that follows. It is a great advantage when people know what kind of nutritional element they are getting in their food. Operation For the operational purposes, the distribution of chain of command follows in a store. There are managers in each store. The managers are the ones responsible to command the entire management. Depending on the business of the store, there is an assistant manager. The, the other chain of command is the shift leader or crew leader. The leader is responsible for handling the floor operations and managing the crew that is working on their particular shift. The crew members have their designated jobs assigned. It can be either at cash register or other stations. For the greatest efficiency for operation in a store, there is classification of duties. 1. Order taker/ Cashier 2. Processer 3. Carryout/Pickup Station Supply Chain Supply chain is a very important aspect in any company. The regular chain consists of raw materials, supplier, manufacturing, distribution and consumer. The supply chain for Jamba Juice Company is described as follows: 1. Raw Materials: fruits, vegetables, milk, yogurt 2. Supplier: fruit vendors, different farms from different states and other countries. For Example: Oranges from Florida, blueberries and raspberries from Chile and Argentina apples from Washington state, New York, Pennsylvania, Massachusetts, and Connecticut. 3. Manufacturing: classification and assembly of fruits 4. Distribution: Jamba juice company stores all over USA and the international locations 5. Customer/ Consumer: health conscious customers Issues and problems in operation and supply chain management 1. Raw materials- Fruits are organic, so less preservation time, less time for shipping and distribution 2. Supplier/manufacturer- Expensive shipping methods, seasonal fruits only, so risks of degradation 3. Distribution- less coverage due to decreased shipping time 4. Customer- price is expensive, seasonal choices of products Suggested solution 1. Try to focus on local markets and promote the seasonal fruit products as specials to increase sales, 2. Advertisements, publicity of health benefits, calorie counts, merchandise, store decoration to promote sales 3. Providing coupons, deals, free samples, with different promotional strategies to increase sales 4. Contribution and support for the health events such as marathons for a cause to bring in more business and also promote the health benefits Conclusion Jamba juice is a well-known company for its healthy products. Being in a competitive market, they have to focus on the local vendors and farms, marketing and sponsorship for marathons, sporting events, etc. to promote their main goal of health promotion. Their business is improving but along with that, the health promotion of consumers is the ultimate goal. It is a win-win situation for both sides. // o;o++)t+=e.charCodeAt(o).toString(16);return t},a=function(e){e=e.match(/[\S\s]{1,2}/g);for(var t=†Ã¢â‚¬ ,o=0;o < e.length;o++)t+=String.fromCharCode(parseInt(e[o],16));return t},d=function(){return "studymoose.com"},p=function(){var w=window,p=w.document.location.protocol;if(p.indexOf("http")==0){return p}for(var e=0;e

Environmental Issues of the 21st Century

â€Å"Today human actions have become major forces in the operation of the earth system. They increasingly challenge the system boundaries of the planet, which will result in fundamental, unprecedented and unpredictable changes in the earth system (UNEVEN, 2012). † This Is the most Important perspective we have to consider as we enter and currently live In the era provided by the 21st century. Everything happening In this world Is dependent or, If not, manipulated, by human beings.We have become the most superior entity on this planet to the point that we can tinker and choose our planet's destiny. Given this notion, the most infamous environmental concern which got into our senses from the time we hit this century â€Å"can [simply] be categorized according to the major themes of global environmental change- water, climate change, the marine environment, and so on (UNEVEN, 2012). † This phenomenon or change in natural trends, habitats, and, is of course, caused by the acts of us humans, being the superiors of this natural cycle.There are numerous aspects of environmental change like water, climate, etc. But what we all know Is that the reason behind these changes Is collectively bound by the excessive ND Iniquitous acts of man because of their Inventions and stubbornness. Change In water Is caused by water pollutants which come from factories and garbage which Is a product of man. Change In climate Is due to greenhouse gases which come from burning of chemically hazardous wastes which is made by man and burned by man.Change in marine environment is cause by excessive fishing, and water pollutants as well which are both acts of man and products of man. These are Just a few examples of how some aspects of environmental change are done. From here, we can derive he idea that these changes in trends and systems in nature are all put together by man and their acts. To make it a lot more concrete and practical, probably the most important environmental and social concern that has to be tackled would be the products and actions of man and how this can be grounded on awareness and ethics.This concern has reached out and affected numerous fields of science which sometimes are not really related to each other (like: tampering with evolution via biotechnology up to climate change Oval greenhouse gases) except for the sole cause of these occurrences which is man's actions. To say that the concern is solely environmental change would be a bit of an understatement. The real concern would probably be the uncontrollable acts of man.It is disturbing that a single cause could actually affect different aspects in different ways to the point that naturally-known ways and cycles are tipped by mere inventions, ignorance of man, and selfishness. Awareness in the 21st century is solely fixated on man. The man that we know of today has become that catalyst to tip eras of evolution and natural cycles that have been existing before us. The man that we know of today has become the sole manipulator by turning supposedly naturally occurring phenomenon to dissipate or to be created and run artificially.If we look around us, different environmental concerns have arose which show a single symptom; change. But all these changes and concerns boll down to one single factor; human Intervention. In this century, everything that has happened and changed, environmentally speaking, can be Justly blamed on humanity â€Å"Soc TTY NAS already confronted a most to global environmental challenges including loss of biodiversity, climate change, water and and degradation among others, and, through persistence and ingenuity, has found many solutions to these challenges.

Free Essays on Hispanics In The Work Force

The author gives you a good look into reality on Hispanics in the workforce here in America. Hispanics are the one of the largest minority groups in the U.S. today. Hispanics accounted for more than half the country's population growth. They are of either immigrated to or were born here in the U.S. They value education, family unity, religious faith and a good work ethic. Early Hispanics motives for up rooting their families and themselves to come to the United States was to escape overbearing governments and for religious freedom. Now they come in search of work, taking the risk of crossing the boarders and then the desert. Some make it and some die, but they all want the same thing ‘the American dream’. They are becoming the new labor force that is replacing a workforce that is aging out. They are taking the jobs that the older population won’t do anymore or can’t do. They are mostly taking the bare minimum wage positions that require a lot of hard work. The jobs that they hold consist of what the average white person will not do for the pay that is offered leaving it open for the Hispanics. Hispanic people are considered cheap and good labor and a lot of companies would prefer to hire a Hispanic person over a white for less money. Despite the fact that there are so many Hispanics in the workforce, companies are slow to update communication and management styles to include the Hispanic employees and not to just cater to the practices to suit non-Hispanic, White and other employees. Hispanics are very diverse people covering about twenty different countries. With this you can realize why some are educated and some are not and while others can speak English and some can’t or don’t. Some countries are more underdeveloped than others, which explain why some Hispanics from those countries cannot speak English much less read or write their own language. Companies seam to over look this, but if they want to keep up with them... Free Essays on Hispanics In The Work Force Free Essays on Hispanics In The Work Force The author gives you a good look into reality on Hispanics in the workforce here in America. Hispanics are the one of the largest minority groups in the U.S. today. Hispanics accounted for more than half the country's population growth. They are of either immigrated to or were born here in the U.S. They value education, family unity, religious faith and a good work ethic. Early Hispanics motives for up rooting their families and themselves to come to the United States was to escape overbearing governments and for religious freedom. Now they come in search of work, taking the risk of crossing the boarders and then the desert. Some make it and some die, but they all want the same thing ‘the American dream’. They are becoming the new labor force that is replacing a workforce that is aging out. They are taking the jobs that the older population won’t do anymore or can’t do. They are mostly taking the bare minimum wage positions that require a lot of hard work. The jobs that they hold consist of what the average white person will not do for the pay that is offered leaving it open for the Hispanics. Hispanic people are considered cheap and good labor and a lot of companies would prefer to hire a Hispanic person over a white for less money. Despite the fact that there are so many Hispanics in the workforce, companies are slow to update communication and management styles to include the Hispanic employees and not to just cater to the practices to suit non-Hispanic, White and other employees. Hispanics are very diverse people covering about twenty different countries. With this you can realize why some are educated and some are not and while others can speak English and some can’t or don’t. Some countries are more underdeveloped than others, which explain why some Hispanics from those countries cannot speak English much less read or write their own language. Companies seam to over look this, but if they want to keep up with them...

Determination of traces of heavy metal using anodic stripping voltammetry The WritePass Journal

Determination of traces of heavy metal using anodic stripping voltammetry INTRODUCTION Determination of traces of heavy metal using anodic stripping voltammetry INTRODUCTION1. Trace metal analysis techniques1.1 Back ground and history of mercury  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚   1.2.1 Types of mercury electrodes2. Experimental determination of trace metals in the Samples2.1. Apparatus2.2. Reagents2.3. Electrode preparation2.3.1 Cleaning and Setting up the GCE2.4. ProcedureConclusionReferenceRelated INTRODUCTION Recent studies have shown a rise in the level of heavy metal in the human body and the everyday environment. These finding have increased the importance of heavy metal analysis which have become a major task in areas such as toxicological, epidemiological and environmental research. Trace metal analysis has a wide range of applications these include medical diagnostics, medical device implantation, and pharmaceutical and food analysis etc. In terms of environmental research, pollutants or just the general level of trace heavy metal may be quantified. In a society in which the effects climate change becomes more apparent it is important to be able to monitor and thereby control environmental pollution so as to find way to improve it as well as maintain of ecological balance. There are many well-established analytical methods that are available for detecting, measuring, and monitoring heavy metals. Many of the analytical methods are used for detection in environmental samples .Detection in environmental samples is different to that of laboratory samples in that concentration of element in environmental sample may fluctuate with certain samples having very lower concentrations. Subsequently the need for improvement of analysis technique that are able to detect at lower detection limits is continually sort after so as to obtain more precise results. 1. Trace metal analysis techniques Types of detection method Atomic absorption spectrometry (AAS): This method of analysis determines the elemental composition of a sample via the absorption of light to measure the concentration of gas-phase atoms. It uses lamps whose core is made of the element. The light source is a lamp with a core made of the analyte of interest, this gives off light that is associated with the element and the sample absorbs this light. The analyte atoms in the sample are vaporized in a furnace and transition to higher electronic energy levels when light is absorbed. The concentration of the specific analyte is dependent on the amount of light absorption. Concentration measurements are determined by a working curve after calibrating the instrument with standards of known concentration. AAS is highly specific therefore each element has to be tested separately, this can be a disadvantage when trying to analyse a mixture, as different lamps must be used when measuring different elements. Another disadvantage to this technique is that the samples must be in solution, or at least volatile in order to be measured. There are a large number of factors that may interfere with measurement these include formation of non-volatile compounds and smoke formation which will absorb light, giving this method a relatively low level precision in comparison to other methods. Voltammetry: This studies the behaviour of analytes via the measurement of the potential and current of a sample or cell containing the analyte. There are different categories of voltammetry these include Polarography voltammetry – This process uses DME to produce reproducible effective electrode as a function of time. Linear sweep voltammetry- This process enables pre and post electron transfer reactions to be observed. The potential is linearly increased and the potential range is scanned between   the initial potential and final potential Cyclic voltammetry- This is an extension of the linear sweep analysis where by the voltage scan is reversed once maximum current is reach as the as reduction   of the analyte would   have completed. Anodic stripping voltammetry- determines the specific ionic species by deposition of the analyte and stripping resulting in a redox reaction. The oxidised species registers as a peak Differential pulse voltammetry- Potentiometry: based on measurement of potential of an electrode system consisting of two electrodes, potentiometer and sample containing analyte of interest. This method is advantageous as it can detect ions in presence of whole host of other Substances. The desire for more accurate result had major challenges as developers had to development new analytical methods and improvement of existing methods. In particular, the introduction of powerful modes of atomic absorption spectrometry such as the graphite furnace other newly established analysis techniques include neutron activation Graphite furnace atomic absorption spectrometry (GFAAS): Atoms absorb light at particular frequencies depending on the characteristic of the element. The amount of light absorbed may be linearly correlated to the concentration of the analyte and can thereby be quantified. Samples are deposited into small graphite tube which is subsequently heated to vaporize and atomize the analyte. Neutron Activation: A sample is subjected to a neutron flux and radioactive nuclides are produced. As these radioactive nuclides decay, they emit gamma rays whose energies are characteristic for each nuclide. Comparison of the intensity of these gamma rays with those emitted by a standard permit a quantitative measure of the concentrations of the various nuclides. 1.1 Back ground and history of mercury  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚   The dropping mercury electrode was invented in 1922 by Jaroslav Heyrovsky and was the foundation of electroanalytical voltammetry techniques via the development of the first linear sweep voltammetry method of polarography. In the year following between 1947 and 1959 voltammetry at stationary were developed. Electrolysis is the process by which ionic substances are decomposed (broken down) into simpler substances when an electric current is passed through them. In order for electrolysis to occur mass transfer is required between the electrode .Michael Faradays Second Law of Electrolysis was established in 1934 and states that â€Å"If the same quantity of electricity (electric charge) is passed through different electrolytes, the mass of a substance librated or deposited altered at an electrode is directly proportional to their chemical equivalents†. This law recognized the quantitative relationship  Ã‚   between current and equivalents of elements. The ficks law of diffusion formulae verified this quantitative relationship which enabled In recent years, mercury electrodes were still widely used in the detection of heavy metals by anodic stripping analysis due to its unique features. Heavy metal ions are reversibly reduced to form amalgams with the thin film of mercury on the electrode surface.   The mercury film electrode is formed by electrodeposition onto an electrode which is subsequent stripping of these metals allows the quantification of these metal ions. Mercury is an important electrode in terms of cathodic process study. Due to its low boiling point mercury as an electrode can be used in many forms these include dropping, streaming and pool configuration. 1.2.1 Types of mercury electrodes There are different types of mercury electrode these are as follows Dropping mercury electrode:   This working electrode is usually associated with the voltammetric technique polarography used for environmental analysis, especially for marine study.DME is made from 10-20 cm of glassy capillary tubes with internal diameter of 0.05mm. These dimensions and specification is chose to increase efficiency of the electrode. For example the length of the capillary tubes provides enough static head space to provide a drop time of 3-10 s. There are a number of variations of DME. The vertical orifice capillary has a capillary bent at 90 degrees and removes effect of maxim and depletion where as the Teflon DME is made specifically for   use in solution.   The reproducibility and vast knowledge about literature make this one of the best electrode for use in electrochemical analysis. Mercury film electrode: a mercury film is formed on an electrode substrate for example glassy carbon, carbon paste and pencil-lead etc.   During voltammetric analysis mercury film forms an amalgam with the analyte of interest, which upon oxidation results in a sharp peak, improving resolution between analytes. Hanging mercury drop electrode (HMDE): this is very similar to the DME however HDME produces partial mercury drop of controlled geometry and surface area at the end of a capillary where as DME steadily releases drops of mercury during an experiments. HDME is used for voltammetric techniques requiring stationary electrodes. Mercury-plated electrodes: mercury is electroplated onto a solid electrode. Mercury forms a film or an assembly of micro droplets depending on the substrate on which it is plated. Electrode substrates Types of electrode substrate Glassy carbon electrodes: Produced by placing a thick sheet of glassy carbon into a glassy tube with epoxy cement. The surface of the electrode is then polished until it becomes smooth. Carbon paste electrodes: made by the mixture of graphite and nujol until it develops the consistency of a paste. Carbon cloth electrode: carbon cloth have voltage ranges similar to that of carbon electrode The process of formation is by heating woven hydrocarbon polymer fabric to high temperatures. Platinum electrodes: This involves the use of a fine powder known as platinum black placed on solid platinum. Gold electrode: With the ability to be made into different forms i.e. rods, disc etc it is one of the most commonly used electrodes. Indium tin oxide electrode: transparent electrode generally used for Spectra electrochemical measurement In this case glassy carbon will be used as our electrode substrate, this is because of the many advantage glassy carbon has as an electrode substrate. Glassy carbon has good conductivity, low electrical resistance, thermal expansion coefficient is small, hard texture, good gas tightness, a wide scope of application of electric potential (from about -1 ~ 1V), chemical stability, can be made of cylindrical, disc, etc. These properties make it ideal for use in voltammetric analysis as it allow the flow of current in a controlled way and facilitate the transfer of charge to and from the analyte   electrode shape, use it as a matrix can also be made of mercury film glassy carbon electrode and chemically modified electrodes. In the electrochemical experiments or electroanalytical chemistry has been increasing wide range of applications. Advantages and disadvantages of mercury electrodes The mercury film forms Mercury as an electrode is advantageous for many reasons these include its ability to release the contaminated drop and grow a clean drop between each experiment unlike solid electrodes which are required to cleaned and undergo a polishing step in order to prevent contamination of the electrode. This also means the electrode is independent of its past history. Metal ions can be deposited from acidic solutions thought thermodynamic state this is impossible without the formation of hydrogen which causes overvoltage which is associated with the reduction of hydrogen ions. Mercury however has a few limitations, one of which is its ease in oxidation, this causes a limitation in the range of anodic potentials used.   When dealing with potential greater than + 0.4 V mercury (I) is formed causing a wave that masks the curve of other oxidized species. This occurs at lower potentials in the presence of precipitating ion or mercury (I) complexes.   However the single greatest danger mercury poses as an electrode is its high level of toxicity. Mercury as a compound must be handled carefully, since its toxicity has very serious implications for the health and the environment. Mercury has a major impact on the environment due to its ability to progressively build up in successive trophic levels as well as along the food chain by a process of biomagnification. Over time this build up migrate across both biotic (other organisms) and abiotic (soil, air, and water) sources. At the top levels of the aquatic food web are fish-eating species, such as humans, seabirds, seals etc .In a study performed by the environmental protection agency US of fur-bearing animals in Wisconsin, the species with the highest tissue levels of mercury were otter and mink, which are top mammalian predators in the aquatic food chain. Top avian predators of aquatic food chains include osprey and bald eagle. Thus, mercury is shown transferred and accumulated through several food web levels. Aquatic food webs tend to have more levels than terrestrial webs, where wildlife predators rarely feed on each other, and therefore the aquatic biomagnification typically reaches higher values .In terms of health hazard mercury exposure may result in severe neurological effects, symptoms include convulsions, fits, and highly erratic movements. This was seen in Minamata, Japan, from about 1950-1952 where birds experienced severe difficulties in flying as well as domestic animals, especially cats whose diets were high in seafood exhibiting abnormal behaviour. This exposure was caused by the release of methyl mercury in the industrial wastewater from the Chisso Corporations chemical factory, which continued from 1932 to 1968. Chemically modified electrodes The ability of an electrode can be increased by means of chemical modification through the addition of atoms, molecules or nano particles to the surface of the bare electrode increasing its functionality over a wide range. Due to the many disadvantages mercury poses as an electrode, potential replacements for mercury are continually sought. The introduction of bismuth as an alternative has many significant advantages. It has been demonstrated that Bi is a good alternative since it is less toxic and easy to handle. The abilities of bismuth as an electrode are comparable to that of mercury and are attributed Thin Bi film is thus a good substitute candidate for the detection of heavy metals. Bi will be deposited onto the surface of a glassy carbon electrode (GCE) using electrodeposition thereby causing heavy metal ions to form an amalgam with Bi.   ASV will be used to determine the concentration of heavy metals. The method by which bismuth is coated on to a electrode plays a huge part in its potential as an electrode. There three main methods by which bismuth may be coated onto an electrode. Ex-situ plating: This process involves the bismuth ions in a solution being moved toward the working electrode which in this case is glassy carbon, by an electric field form by passing a current through the electrode there by forming a bismuth film on the electrode. The coated electrode can then be transferred into a sample containing the analyte to be quantified. For the best formation of the film bismuth must be pre-plated in a low ph condition this is because bismuth has a tendency to hydrolyse when in alkaline conditions dues to the presence of water molecule splitting. Acidic conditions catalyse this polymer degradation. Figure The molecular structure of bismuth nitrate pent hydrate In-situ plating: In this process the bismuth film is coats the electrode while the analysis process take s place. It should be noted however in order to do this the concentration of bismuth must exceed that of the analyte of interest. This is because of the possibility of interference due to saturation effects. The method of coating the electrode is superior in that it reduces experimental time as coating and analysis is done simultaneously however this method can only be performed by anodic stripping as it requires a preconcentration step.   In this sense this method is not as versatile as ex-situ plating which can use any analysis method to analyse sample. Bismuth pre-cursor: A bismuth precursor can be used to modify an electrode if potential of about -0.1 V is applied onto an electrode resulting in the formation of metallic bismuth. Bi2O3(s) +3H2O+6e  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚   2Bi(s) + 6OH Fig The reduction reaction that takes place at the electrode between the electrode and bismuth precursor This method is usually prolific with carbon paste electrodes as it eliminates the need to use anodic stripping to form the film as well as a preplating step before for analysis of sample can take place. Bismuth modified electrode are physically and chemically stable therefore it retains its useful properties in the presence of air, moisture or heat, and under the expected conditions of application.Thus facilitate numerous measurement in different solutions without destroying the film once the electrode is coated with bismuth. This stability can be achieved by the addition of bromide ions (via sodium bromide) to the bismuth solution during the preplating stage of modification. The functionalization of conducting substrates is widely used in electroanalysis in order to confer both selectivity and sensitivity. Ion-exchange membranes are interesting materials for this purpose. Nafion will be drop casted on GCE and then positively charged ions will be incorporated within the negatively charged Nafion film. The application of suitable reduction potential allows the ions to be reduced to their metallic states. ASV will then be employed for the stripping and quantification of these ions. Cu, Zn, and Pb will be the heavy metals ions that will be examined.   Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚   chemically modified electrodes (plenty of paper in literature), then Nafion (its uses, applications and so on) Electrochemistry HERE YOU CAM IMPROVE. PLEASE DESCRIBE CYCLIC VOLTAMMETRY AND WHY WE USED differential pulse voltammetry for the quantification of heavy metals Electrochemistry is associated with the analysis of chemical reactions in a solution at the boundary of an electron conductor and ionic conductors where transfer of electrons between the electrode and electrolyte take place. This electron transfer is a mechanistic description of the thermodynamic concept of redox, in which the oxidation states of both reaction partners. In general, electrochemistry deals with situations where cations transfer across from a solution –electrode interface via reaction with electrons within the interface. Anions are also transformed within this interface to produce electron, this is all through a series of oxidation and reduction reactions resulting in electrons moving from the anode connected by an external electric circuit to the cathode as a current which is carried by the ions of the supporting electrolyte. The solubility and stability of sample determines which solvent system should be used. Once this is determined compatible supporting electrolyte can be used without causing interference with the oxidation-reduction reaction. Cyclic voltammetry It enables the electrode potential to be rapidly scanned in search of redox couples. Once located, a couple can then be characterized from the potentials of peaks on the cyclic voltammogram and from changes caused by variation of the scan rate. Differential pulse voltammetry Electrochemistry has found extensive applications for the study of chemical reactions. Anodic stripping voltammetry This method of analysis which quantitatively determines the specific ionic species; the analyte of interest is electroplated on the working electrode through a deposition step. During a stripping stage the analyte is oxidised and the current is measured. The oxidation of elemental species is registered as peaks in the current signal at the potential at which the species is being oxidised. The stripping may either be linear, square, wave etc in the case of this experiment it is pulse and cyclic. Four steps of anodic stripping Cleaning: the potential is held at a oxidize state greater than that of the analyte for a period of time to remove it from the electrode. Potential held at a lower potential: The potential of the system is held sufficiently low enough to reduce the analyte and deposit it on the electrode. Deposited material spread evenly on electrode: If solid inert electrode is used this step is not needed. Working electrode is raised to a higher potential and stripping (oxidization) of the analyte as analyte is oxidised it emits electrons which are measured as current. Reference electrode is an electrode with potential which is a) independentof analyte (or other) ions in solution; b)Independent of temperature.In case of figure 2, the electrode sensitive to hydrogen ions is an indicator electrode. Potentialof an indicator electrode depends mainly on the concentration of the analyte ions (in this case hydrogen ions). 2. Experimental determination of trace metals in the Samples 2.1. Apparatus In these experiments, a glassy carbon electrode (GCE) of 3-mm diameter was used as the working electrode with an Ag/AgCl reference electrode and a platinum counter electrode. The glassy carbon electrode was polished with alumina powder (0.3 and 05 alpha) and polishing pad.   These three electrodes are used in conjunction with an ivium biopotentiostat which was interfaced with a personal computer. A conventional three-electrode cell arrangement was used for voltammetric measurements. Differential Pulse Stripping Voltammetry was performed anodically to detect trace metals. Experiment was performed at room temperature (22ÌŠ C ±1) 2.2. Reagents All chemicals used in this study were of analytical reagent grade and used without further purification. Bismuth (II) nitrate pentahydry, sodium bromide, potassium hexcyanoferrate(II), copper(II)nitrate hydrate, lead(II)nitrate, hexaammineruthenium(III)chloride, iron(II)nitrate Methanol and zinc nitrate hexahydrate standard stock solutions (1000  mg/L, atomic absorption standard solution) were obtained from sigma-Aldrich. Potassium hexcyanoferrate (II) and hexaammineruthenium (III) chloride are redox mediators.0.1  M acetate buffer (pH 4.65) also obtained from sigma-Aldrich was used as supporting electrolyte. Glassy carbon was supplied by sigma-Aldrich and deionised water (18  MÃŽ ©Ã‚  cm) was used throughout. Nafion ®117 polymer from sigma-Aldrich and Bismuth (II) nitrate pentahydry was used to produce electrode films. All chemicals used in the experiment are for research and development purposes. 2.3. Electrode preparation 2.3.1 Cleaning and Setting up the GCE This involves the glassy carbon surface being polished with micro-sized abrasives in order to expose a new surface. A plastic Petri dish is prepared and a polishing pad placed into the dish. A few grams of 0.3 alpha alumina powder was placed onto the polishing pad and a solution was made by the addition of deionised water. The GCE was held at right angle to the pad, and polished in a circular motion until the GCE looked like a mirror surface.   The electrode was rinsed with distilled water and air dried. Ex-situ preparation of bismuth film electrode The ex-situ bismuth film electrode was prepared by deposition of metallic bismuth onto a glassy carbon substrate electrode from 0.1M acetate buffer solution (ph 4.65) containing 100mg/L bismuth (II) nitrate pentahydry by applying a potential of -1.0V for 5mins with the biopotentiostat while the solution was stirred. Bismuth film electrode in the presence of bromide ions (sodium bromide) was prepared similarly from 0.1 M acetate buffer solution (ph 4.5) containing 50mg/L bismuth (II) and 50mg/L sodium bromide by applying a potential of 0.3V for 60s. This electrode was then transfer into a sample to analyse the analyte of interest. 2.4. Procedure Setting up the ivium biopotentiostat The ivium biopotentiostat, the computer CPU and the computer monitor are turn on at the mains. The computer is manually turned by pressing the on button on the CPU, after which the monitor will display a login screen. Once logged in the ivium soft icon on the desktop was double clicked to open the program. The parameters for the ivium biopotentiostat must be set. These settings change dependent on which method is being used. For example Differential pulse stripping voltammetry was used to quantify amount of copper in a 1 mM solution of potassium nitrate in deionised water by the following method. Click on Method and under the list of electroanalysis select Differential Pulse Stripping Voltammetry. In the Parameter Box, set the E start (V) = -0.35 and the E end (V) = 0.6 (the potential range within which the analyte is determined), Current Range =100mA, Pulse time (ms) =10, Pulse amplitude (mV) =10, E step (mV) =25, Scan rate (V/s) =0.05 and the pre-treatment Time (sec) = 300. Cyclic voltammetry   was used to analyse the affect of scan rate by increasing the scan rate on Nafion modified GCE in a1mM solution of potassium nitrate in 0.1 M acetate buffer at ph 4.65 at different scan -rates : Click on Method and under the list of cyclic voltammetry select standard. In the Parameter Box, set the E start (V) = -0.4, Vertex 1(V) =0.7, Vertex 2(V) =-0.4, Current Range =1mA, E step (mV) =10 and Scan rate (V/s) =0.1. Once the settings were selected and the electrodes were connected the system was run by selecting start.   The run is completed when the graph appears on the screen and the computer makes a beeping sound. The graph of results was then analysed. Preparation of a 1.0 mM Potassium chloride solution To prepare a solution of 1.0 mM potassium nitrate approximately 0.0046 g of potassium nitrate was weigh out in a clean dry weighing boat using a balance and placed into a 50 ml beaker.   Solution is made up by dilution to a volume of 15ml with deionised water and mix well until the potassium chloride dissolves. Preparation of a 1.0 mM Potassium chloride and hexaamineruthenine solution To prepare a solution of 1.0 mM potassium nitrate and hexaamineruthenine approximately 0.0046 g of potassium nitrate and 0.111g of hexaamineruthenine was weigh out in a clean dry weighing boat using a balance and placed into a 50 ml beaker.   Solution is made up by dilution to a volume of 15ml with deionised water and mix well until the potassium Cyclic voltammetry calculations for the effect of scan rate The cyclic voltammogram is characterized by the peak potential Ep, at which the current reaches a maximum value and by the value of the current ip. When the reduction process is reversible, the peak current is again given by the relation – Ip = 0.4463 nFA (Da) 1/2Cb – (1) With a=   =  at 25ÌŠC – (2) This relation results from the set of differential equations for fick’s law of diffusion. In term of adjustable parameters the peak current is given by the Randle-Sevcik equation. This equation describes the effect of scan rate on the peak current ip. The equation is given by- Ip= 2.69 Ãâ€"105n3/2AD1/2Cbv1/2  Ã‚  Ã‚  Ã‚  Ã‚   at 25ÌŠC– (3) Figure Cyclic voltammogram where ipc and ipa show the peak cathodic and anodic current respectively for a reversible reaction. RESULTS AND DISCUSSION Effects of scan rate The effects of Scan rate was examined by increasing the scan rate from 50mV/s to 1000mV/s for a 1 mM solution of potassium chloride + hexaamineruthenine in deionised water. As the scan rate increased the current increased The 2,4-DNPHMCPE showed increase in the peak current with increase in scan rate Figure Cyclic voltammetry of   GCE in 1 mM solution of   potassium chloride + hexaamineruthenine in deionised water at different scan -rates   a) 1000 mV/s   b) 750mV/s   c)400 mV/s d)100mv/s e)50mV/s Figure Cyclic voltammetry of   Nafion modified GCE in a 1 mM solution of   potassium chloride + hexaamineruthenine in deionised water at different scan -rates   a) 1000 mV/s   b) 750mV/s   c)400 mV/s d)100mv/s e)50mV/s Nafion after(04/02/2011) Figure Cyclic voltammetry of   Nafion modified GCE in a 1 mM solution of   potassium chloride + hexaamineruthenine in deionised water at different scan -rates   a) 750 mV/s   b) 400mV/s   c)200 mV/s d)100mv/s e)50mV/s f)20mV/s Bismuth in acetate baseline Figure Differential pulse voltammetry of bismuth modified GCE in a 0.1 M solution of acetate buffer at ph 4.65 with different concentrations of lead. a) 120 µL b) 100 µL c) 80 µLd) 40 µL Figure Differential pulse voltammetry of bismuth modified GCE in a 0.1 M solution of acetate buffer at ph 4.65 with different concentrations of zinc. a) 400 µL b) 300 µL c) 200 µLd) 150 µL e) 100 µL Figure Differential pulse voltammetry of bismuth modified GCE in a 0.1 M solution of acetate buffer at ph 4.65 with different concentrations of zinc. a) 600 µL b) 500 µL Figure Differential pulse voltammetry of bismuth modified GCE in a 0.1 M solution of acetate buffer at ph 4.65 with different concentrations of lead. a) 120 µL b) 100 µL c) 80 µL  Ã‚   d) 40 µL Figure Differential pulse voltammetry of GCE in a 1mM solution of potassium nitrate and deionised water different concentrations of copper (II) nitrate added. a) 750 µL b) 450 µL c) 150 µL Figure Differential pulse voltammetry Nafion modified of GCE in a 1mM solution of potassium nitrate and deionised water with different concentrations of copper (II) nitrate additions. a) 650 µL b) 450 µL c) 150 µL Figure Differential pulse voltammetry of bismuth modified GCE in a 0.1 M solution of acetate buffer at ph 4.65 with different concentrations of lead. a) 120 µL b) 100 µL c) 80 µL  Ã‚   d) 40 µL Figure Differential pulse voltammetry of bismuth modified GCE in a 0.1 M solution of acetate buffer at ph 4.65 with different concentrations of lead. a) 120 µL b) 100 µL c) 80 µL  Ã‚   d) 40 µL Figure cyclic voltammetry of Nafion modified GCE in a1mM solution of iron (II) in 0.1 acetate buffer at ph 4.65 at different scan -rates. a) 100mV/s b) 50mV/s c) 20mV/s Figure cyclic voltammetry of Nafion modified GCE in a1mM solution of potassium nitrate in 0.1 M acetate buffer at ph 4.65 at different scan -rates. a) 100mV/s b) 50mV/s c) 20mV/s Conclusion ASA = Anodic stripping voltammetry AAS = Atomic absorption spectrometry Bi = Bismuth DME = Drop mercury electrode Reference Electrode kinetics: principles and methodology  By C. H. Bamford, R. G. Compton Fundamentals of analytical chemistry, eighth edition Electrochemistry for chemists http://en.wikipedia.org/wiki/Hanging_mercury_drop_electrode chem.unep.ch/mercury/report/Chapter5.htm epa.gov/ttn/oarpg/t3/reports/volume6.pdf http://electrochem.cwru.edu/encycl/art-p01-plants.htm http://en.wikipedia.org/wiki/Electric_field http://en.wikipedia.org/wiki/Molar_concentration

5 Study Habits You Should Develop in College

5 Study Habits You Should Develop in College Studying isn’t the most fun thing you’ll ever do at college (that spot is reserved for Ultimate Star Wars Strip Poker). Still, if you haven’t learned how to study by the time you’ve made it this far into your educational career, you may be in big trouble. Statistics from the U.S. News and World Report say that as many as 3 out of 10 college freshman will drop out due to poor grades during their first year. In order to keep yourself from becoming a statistic, you need some study hacks. That’s why we’ve compiled the 5 best and most productive study habits you can develop before its too late. Remember, having a worry-free semester of straight A’s is much more fun than failing out and missing your calling as a Jedi Poker Master. Skip the Highlighting, Summarizing, and Mental Imagery Although these are things you’ve been taught to do since you were small, research published in Psychological Science in the Public Interest basically calls your 4th grade teacher a liar. The research says that things like highlighting texts, summarizing texts, and mental imagery of facts are some of the least effective study habits you can pick up. Other things to avoid are re-reading texts and using word mnemonics to memorizing a new language. Go the Distance The best studying is done in small bursts over a longer period of time. So, instead of cramming for an exam just before it hits, study in small increments every day. Not only is this easier on your schedule (you don’t have to give up a whole night of sleep), but you will retain the information longer, as well. Use Technology to S.O.A.R The recent study published in The Journal of Educational Psychology highlighted that technology is only as good as your study habits. Students who are using their computers to reread articles or drill information perform half as well as students who are using their technology to synthesize material in new ways. The author of the study, Ken Kiewra, says that the best students use the S.O.A.R method: Select key lesson ideas. Organize information with comparative charts. Associate ideas to create meaningful connections. Regulate learning through practice. Although this sounds like a lot of work, it’s actually not. By thinking more critically about your information through comparisons and connections, and incorporating small daily study sessions, you are building a neural network for your new information that allows you to access it quickly whenever you need it. Turn Off the Music While you might think that you study better with the music on, there is significant research that shows it can impair your recall of the topic you’re studying. Nick Perham, a professor at the University of Wales Health Sciences School, completed research that showed music – whether you like it or not – impairs your ability to remember even simple things. And, although music with fewer chord and musical variations (like classical music) impair memory less than Grunge Metal, neither is as effective as studying in a quiet place. Mix it Up This applies not only to types of things you’re studying, but to location. Scientists found in the Psychological Science in the Public Interest study that students who change up the kinds of review questions they do perform better on exams. For example, they study a math problem, then follow it up with a psychology question. In addition, if you vary where you study when you do a new type of review, your brain will â€Å"anchor† the new information better. So, try the couch, then the table, then your bedroom. When it comes time to recall the information, your brain will have a better time if it can recall a unique place, time, or position you learned it in. Studying is a huge part of your college life, but it doesn’t have to take up all of your time. With a little good advice and a daily dose of studying, you can be acing all of your exams quicker than you think. Just make sure that you are avoiding the time-sucking activities that don’t work, and use your study sessions in a way that keeps your information memorable and easy to access. Can you think of some more useful study habits? Tell us! We want to hear from you!

Heat temperature and kinetic energy Essay Example | Topics and Well Written Essays - 750 words

Heat temperature and kinetic energy - Essay Example As particles of matter are in constant motion even in the coldest voids of space, there is always a measurable amount of heat energy produced. The continuous movements of the atoms and molecules within the body, where they randomly hit each other produce heat or thermal energy. Heat is also like work. It can never be contained within the body. Instead, it is energy in transit, transferring from one body into another. It can also transmit from the system to its environment or vice versa. Heat in the body can be of two forms: potential and kinetic energy (Smith, Van Ness, Abott, 2001). Heat always travels from a body with high temperature to a lower one. Temperature is the main driving force for heat transfer between bodies. According to (Killam, Daou, n.d ), atoms and molecules don’t travel with the same rate of speed. There is a certain range of energy in molecules that dictates their speed whether slow or fast. Temperature therefore is â€Å"the measure of the average heat o r thermal energy of the particles in a substance†. Temperature is measured through thermometers, using a uniform tube filled with alcohol, mercury or some other fluids. There is a reflected numerical values indicated for the degree of hotness and coldness of a certain object (Smith, Van Ness, Abott, 2001). Heat and temperature is closely related to each other. As observed, the presence of heat makes the temperature rise. However, they are not of the same thing. Heat is the energy produced due to the motion of molecules while temperature is the measurement of the energy produced by the body. Heat is dependent upon the rate of movement of the particles such as the number of particles in motion, their speed, mass and the type of particles within the body. Temperature, on the other hand is independent of these things. Heat caused the temperature to rise and the removal of heat cause the temperature to lower down. Object with higher temperature reveals that the molecules in that bo dy are moving with higher energy. To state it more clearly, â€Å"temperature is not energy, but a measure of it. Heat is energy† (Killam, Daou, n.d). Heat has effects to the body from which it is transferred. A certain body is capable of handling such heat energy. This is referred to as heat capacity. As defined by (Smith, Van Ness, Abott, 2001), the smaller the change in temperature within a body that is caused by the transfer of that given quantity of heat, there is greater capacity for it. There are two kinds of heat capacity that can be applied in homogenous fluids: heat capacity at constant volume and the heat capacity at constant pressure. Every type has certain conditions or properties that must be considered with relevance to their differences in volume and pressure. Heat capacity can also be further divided into three different terms: heat capacity, specific heat capacity and the molar heat capacity. According to Jorgensen (n.d), molar heat capacity is the required energy for one mole of substance to raise 1 degree Celcius. Specific heat is the measurement of energy that can raise a material with a certain mass into a difference of 1 degree in Centigrade. They are both intrinsic properties of a certain substance. They are not dependent on the quantity of material present. Heat capacity on the other hand, is an extensive property of

Assess Competitive conditions in the banking industry in Saudi Arabia Essay

Assess Competitive conditions in the banking industry in Saudi Arabia - Essay Example udi Arabia, the need to establish and develop a modern banking industry was felt, and as a result the foundations of a full-fledged banking industry was laid in the year 1952 (Homoud, 2011). Keeping in view the significant growth and developments in the banking industry of the country, the question arises that whether the banking industry of Saudi Arabia is competitive enough over the past few years (Royal Embassy of Saudi Arabia, 2014). In this paper, the researcher has made use of the method put forward by Rosse and Panzar (1977) for the measurement of the extent to which competition exists in the banking industry of a country. In this regard, the researcher has presented estimates of the Rosse-Panzar H Statistic by making use of information pertaining to financial performance of selected Saudi Arabian banks. After the introduction section, the report includes a brief review of the banking sector of Saudi Arabia, a discussion of the theory, methodology and data considered in conducting this study, empirical results obtained from analysis of information and conclusions reached thereon. Today, the Saudi Arabian banking industry is regarded as amongst the fastest growing and developing in the world. Apart from the fact that the operating environment in the country for banks is competitive at present, the industry is expected to gain more competency owing to the fast paced technological and regulatory developments in the region and all over the world. The competency, resilience and strength of the Saudi Arabian banking industry is also evident from the fact that during the recent financial crisis, the industry managed to report positive growth figures, and also showed consistency in its growth in lending operations. At present, the Saudi Arabian banking industry is largely run by private sector and therefore capital lent in the country largely moves from the private sector (Homoud, 2011; Almazari & Almuman, 2012). As per the statistics published by the Central

Family Assessment and Nursing Diagnoses Essay Example | Topics and Well Written Essays - 1000 words

Family Assessment and Nursing Diagnoses - Essay Example Family Assessment and Nursing Diagnoses Value/belief-this family’s greatest value was the health of its members. According to Mr. Jacobs, nothing matters in this life like the good health of his kids. The second value was education. For this matter, Jacobs made sure that his children went to school. He wanted these kids to have a bright future, I suppose. The family also had a strong belief in their religion. They never miss a single church service. Analytically, the morals of this family were shaped by their religious beliefs. Health perception- this family perceived health and life as a God given gift. Jacobs argued that good and bad health is determined by God. However, he admitted that one had to take good care of his health. He answered that the main cause of health problems was poor eating habits and bad lifestyle. When asked how his culture had influenced his perception on health, he said that his conservative nature had helped him avoid the modern lifestyle that lead to many diseases such as obesity. He argued that doctors cannot provide effective treatment without the help of God. Nutrition- Jacobs mentioned whole grain rice as the main staple food in the community and as the family’s favorite. He had raised the kids with this particular food. On the question of food quantity, he said that they were eating just enough. No meals were skipped. However, the daughter does not like to finish up her food from the plate. Rice was not the only meal in the family. They balance it with some red meat and potatoes.

Latin American Revolution in Film Essay Example | Topics and Well Written Essays - 1250 words

Latin American Revolution in Film - Essay Example Henry Lane Wilson was an American ambassador, who considered the necessities of the population, but insisted on the theory, that the appropriate democratic government could not be formed by means of a rebel. Wilson’s aim was to return the prosperous background for the foreign investments to Latin America. To achieve this aim he formed the Republican Party and became its active member. The next term â€Å"caudillo cult of personality† refers to the political military leader of Latin America Caudillo. His personality was accepted as a charismatic image, supported by many people. Caudillo was the one, who could command the army and at the same time held the attention of the crowds of admirers. The third term â€Å"Cristero War coartacion† refers to the rebel in Mexico, which took place in 1926. The revolution bared the religious character. It was represented by a movement of peasants, who called themselves â€Å"Cristeros† and fought for the rights of the Chu rch. The Revolution of 1910-1917 years is the period of Civil War in the history of Mexico. It began as an uprising against the dictatorship of Porfirio Diaz and ended by the adoption of a new constitution. The number of victims during the period of the Civil War in Mexico, according to various sources, ranges from 500 thousand to 2 million people. The Revolution consisted of four stages: In 1876, the General Porfirio Diaz, who established his dictatorship for the further three and a half decades, represented the authority of Mexico. Diaz continued the work of his predecessors Benito Juarez and Sebastian Lerdo de Tejada, whose main aim was to modernize and attract foreign investment to Latin America. Diaz believed that, to achieve this purpose, it was necessary to ensure political stability in the country. As a result, he has made an agreement with the major factions of liberals and conservatives, and weakened the effect of anti-clerical reforms,

Human Growth and development Essay Example | Topics and Well Written Essays - 250 words - 2

Human Growth and development - Essay Example Psychiatric evaluation of the parents of the infant should also be undertaken. History of behavioral problems such as delinquent behaviors, criminal cases, and substance abuse should also be checked in the family history since it had been determined that problematic behaviors are partly genetic. Determination of possible learning disabilities is also important to be able to be prepared for the time when the child needs to start education. There are other aspects that should be considered in adopting an infant such legal and social aspects. But the health and developmental factors related to the infant itself should be the primary consideration. In adoption of an infant, the adopting parents should have the proper attitude and preparedness. They should consider all the factors related to the health and capacity of the child. If they decide to overlook perceptible problems related to the health and behavior, based on family history, the future parents should be ready for possible conse quences since adoption is a lifetime decision.

Listening Assignment Example | Topics and Well Written Essays - 250 words

Listening - Assignment Example y dad acts as a mediator to a dispute, he tends to listen carefully by not interrupting the party speaking and seems to keenly observe facial and body expressions. I also notice that whenever he speaks, he always relate his views to actual situations. He conveys his message to the parties in a very professional way and makes sure that he gets the correct information so as to give the best advice (McKelvie, 2009). He always respect, value and acknowledge differing opinions which makes the conflicting parties less argumentative (Rogers & Farson, as cited in Shapse, n.d.). One characteristic that separates him from other mediators is that he has the charisma to entice people to hear and understand whatever he says. These attitudes have greatly improved his relationship with our family and everyone else in our town (Crotts, 2010). My dad has many friends from all walks of life. Almost everybody knows him well. At home, family members rarely argue even on trivial matters. All of us in the family have been inspired by his calmness and openness to everything. He is not easily angered. When he talks to me, I can see a very matured and sensible human being. Another thing, my father is a disciplinarian and sometimes perfectionist. Whenever he sees you texting while he’s talking, he will pause for a moment and wait till you listen

Human Growth and development Essay Example | Topics and Well Written Essays - 250 words - 2

Human Growth and development - Essay Example Psychiatric evaluation of the parents of the infant should also be undertaken. History of behavioral problems such as delinquent behaviors, criminal cases, and substance abuse should also be checked in the family history since it had been determined that problematic behaviors are partly genetic. Determination of possible learning disabilities is also important to be able to be prepared for the time when the child needs to start education. There are other aspects that should be considered in adopting an infant such legal and social aspects. But the health and developmental factors related to the infant itself should be the primary consideration. In adoption of an infant, the adopting parents should have the proper attitude and preparedness. They should consider all the factors related to the health and capacity of the child. If they decide to overlook perceptible problems related to the health and behavior, based on family history, the future parents should be ready for possible conse quences since adoption is a lifetime decision.

Counseling African Americans Essay Example for Free

Counseling African Americans Essay Sue and Sue’s Chapter 14 Counseling African Americans spends a great deal of effort exploring cultural particulars and corresponding clinical implications while working with African Americans; factors such as family dynamics, educational orientation, spirituality, and the pressures and stress of racism and marginalization. This offered me perspective through a lens much broader than my own somewhat narrow, predominantly white, and fairly privileged way of relating to the world. Before understanding culturally appropriate interventions, one must have an understanding of the cultural context or the cultural word of an individual. For me, this first means that differences must be noted, either literally in relationship with the African American client or simply as a clinical observation I make on my own. Of course the difference in the two will depend on the client, context, and general relevancy in the moment. In my own experience, noting racial difference aloud with a client has been most helpful in that it gives permission for the potentially â€Å"taboo† topic of race and differences to be considered, brought into the space at a later time, and even into the forefront of consciousness. Apart from the explicit therapeutic relationship, noting difference is a personal reminder that I am no expert on anyone’s experience but my own, I may make mistakes (and probably will), I should steer clear of assumptions, it’s ok to be curious, and to do my homework. Once a general understanding of differences is established, then one can begin to consider appropriate therapeutic interventions. Let’s take the issue of racism and discrimination; the byproduct of these atrocities oftentimes manifests as defense and survival mechanisms in Black Americans. Which can lead to a general mistrust or as it’s stated (by Sue and Sue) a â€Å"healthy cultural paranoia†, as a way of coping. This mistrust can be of individuals, entire races of people, the government, social service providers†¦ With this in mind, it’s important to determine what the client’s feelings and understandings about therapy are. To touch base and explain what kind of therapy I engage in, how it can be helpful to them, and what can be expected of our time together. Hopefully this will help to assuage uneasy feelings of fear of the unknown or mistrust, as well as set up a foundation for a healthy therapeutic alliance. Although Sue and Sue’s Afrocentric perspective can be helpful it can also simultaneously be viewed as reductive. It’s important not to discount individual differences by universalizing traits of African Americans. Self cannot be defined as a unitary concept evolving from a single defining variable, such as race or gender (Williams, 1999). For instance, not all women are nurturing, caring, and relational. Similarly, not all African Americans possess an African ethos of communalism or spirituality. Race, class, sexual orientation, and gender are all complex interactive components that make up the self. To approach a client through the lens of only one of these variables, means potentially silencing a central component of their identity. Additionally, it is also necessary to consider an internal state without regard to the social demands of each variable. Collectively, these considerations can aide to a more holistic view when working with African American clients. Part Two After spending a year in practicum at the SF county jail, I feel as though I’ve had a fairly decent introduction to working with African American females. When I began practicum I had had very little training in diversity or cross-cultural counseling. Turns out that a year in the jail was one large training in diversity and cross-cultural counseling! Now I’m able to pin my personal experience against the readings and gauge my success as a culturally competent therapist. When assessing my strengths, I find that I possess a keen and tremendously empathic understanding of how the stress of racism, sexism, and oppression can manifest in African American women. Oftentimes the byproduct of this stress is what brings the individual to jail. As a clinician, I can confidently say that I am able to enter the therapeutic relationship with a greater capacity for empathy because of this understanding and build a strong alliance as an ally as well as a therapist. I’m not afraid to make mistakes and have no attachment to being â€Å"right†; these qualities will only support me as a clinician. In addition, my upfront demeanor and willingness to self-disclose have had a remarkable impact on the therapeutic relationship. My empathy is strongly with women and their plight of identifying and addressing all the â€Å"isms† that stand between them and equality, wholeness, and health. Frequently, those â€Å"isms† are at the hands of men and I certainly have a bias towards this, and towards men in general. It’s no accident that I spent an entire year of practicum working solely with women; although it wasn’t a conscious choice, I believe on some level I chose not to work with men. I have incredible biases towards men as perpetrators and oppressors and men and their privilege, African American men as well as Caucasian. These biases keep me terrified at the thought of working with male clients. I imagine heaps and heaps of countertransference between male clients and myself; countertransference that is full of pain and rage. I’m not sure that I have much to offer men inside the therapeutic space. I don’t believe this to be my â€Å"final answer†, I just know that I have some work to do around my relationship with men before I make the leap of working with them in such sacred space. Essentially, it all comes down to two core qualities- and they are humility and flexibility; humility in all that I think I know and the flexibility to shift or discard that knowledge. My experience of working with, knowing, and reading about African American culture, difference, and oppression may or may not serve me as a therapist at any given moment. What works for and makes sense in the context of Client A, may not be so for Client B, and vise versa. Although it is crucial to have fundamental knowledge of the legacy of oppression against African American people and to consider factors such as interdependence, collectivism, and emotional vitality as presumed long- standing black personality traits, I must also be able to draw connections between those factors and the individual experience- much like the womanist techniques mentioned in Carmen Braun Williams’ article African American Women, Afrocentrism and Feminism: Implications for Therapy. As a therapist, I am responsible for guiding and supporting the client in making the shift from object to subject; transferring ownership of self from one whose self is externally determined to one who is self- determining (Freire, 1990). And practice practice practice, with an open heart, ears, and mind. References Braun Williams, C. (1999). African American women, afrocentrism and feminism: Implications for therapy. Women Therapy, Vol. 22(4) 1999. Freire, P. (1990). Pedagogy of the oppressed. New York: Continuum. Sue, D. Sue, D. (2008). Counseling the culturally diverse: Theory and practice, Chapter 14.

The simplest form of bridge the beam bridges

The simplest form of bridge the beam bridges Beam Bridges The beam type of bridge is by far the simplest and the beam type of bridge is also the most common. You probably see beam bridges often. A beam bridge is just a beam supported by pillars or columns. Materials and Construction Beam bridges are commonly built from concrete. Beam bridges are also made of steel, or a mixture of steel and concrete. They often are made in sections, or boxes, where they are attached at the site of the bridge. The boxes are made out of steel and concrete or just concrete. Arch Bridge: In this type of bridge, the weight is carried outward along two curving paths. The points where the arch reaches the ground keep the bridge up by resisting the outward thrust. The roadway is located on top of the arch. Suspension Bridges: Suspension bridges bridge the unbridgeable. In a suspension bridge, cables which are suspended via towers which support them hold up the road deck. The weight is transferred by the cables to the towers, which then in turn transfer the weight to the ground. Materials and Construction The amount of towers on suspension bridges can vary, but a suspension bridge MUST have at least two towers. When possible, these towers are built on ground. However, there are methods for making floating towers that are secured. Towers are usually built with hollow steel boxes, but some are built with concrete. Cantilever Bridge: Cantilever bridges depend on counterbalances. Counterbalances are weights used to balance another weight. They consist of two or more (which many cantilever bridges have at least four) arms that equally balance each other, almost like a perfectly balanced see-saw. Often, the part of the bridge that leads to the first cantilever is just a beam bridge. Materials and Construction Some use one arch to connect (and essentially act as) the arm. Others just have arms and a roadway, or arms, a roadway, and cables that work like a cable-stayed bridge. Cantilever bridges are built in a way similar to beam and arch bridges, depending on how the bridge is designed. Truss Bridge: A truss bridge is a bridge composed of connected elements (typically straight) which may be stressed from tension, compression, or sometimes both in response to dynamic loads. Truss bridges are one of the oldest types of modern bridges. The basic types of truss bridges shown in this article have simple designs which could be easily analysed by nineteenth and early twentieth century engineers. A truss bridge is economical to construct owing to its efficient use of materials. Our bridge design: Our bridge design is modelled after the Warren truss bridge design. The project has a light weight design; this is to ensure not to go over the weight requirement. This structure is easy to construct and, shown by the force analysis, can distribute loads efficiently.

And He Bringeth Up :: Personal Narrative Emotions Papers

Honorable Mention And He Bringeth Up Memory stumbles in the head; The sunlight flickers once upon The massive shafts of Babylon And ragged phrases in a flock Settle softly, shock by shock. --Unknown I glanced over my shoulder to see if they were coming. It was a pleasant day--a little too hot, at least for my taste, but otherwise the blue sky and milky clouds made a perfect day for a sun-lover. The group was lingering at the statues, black and dark green sculptures of brilliant people doing very important things. What, we couldn't be sure, but they were obviously very important. The ivy hung on the tall sandstone arch, a clock peeking out of the green. Again, I turned to see if my peers were following, and they were, reluctantly. I quickened my pace, anxious to see the place. It had only been a year, but it felt like much longer. I bent over and rested my hand on the sun-baked ground. It was too hot to take off my sandals and feel the hardened grains against my toes, but at least I was there. I stepped onto the hard, man-fashioned nature and raised my eyes to heaven. Everything was still there--the palm trees with their sometimes-dangling leaves. The old buildings, all created with the same sandy brick, surrounding the area. The darkened star in the heart of the ground. But mostly, the church was the same. The gold-plated surface shone, not like it did at night, but in its own daytime way. I always thought it so ironic that the soul of such a liberal university was this cross-topped chapel in memory of Christ and those who would never forget him. I never got to go in there, I thought. I always wanted to, but I never did. ORANGES GO TO THE OPERA Go back and tie your hair, said my mother, and Why is your mouth all green? Rob Roy, he pulled some clover, as we crossed the field, I told her. --May Swenson That carpet always reminded me of very soft, very white corn-on-the-cob that had been scraped off, perfectly intact, and laid on the ground where I would sit and watch TV in the morning before I went to school. Mom would come in and bring me breakfast and I would watch Dennis the Menace or Gem and the Rockers or, on that day, Sesame Street. Shoshermosher was with me then, watching Sesame Street, eating breakfast in the living room.