Essay Sample on Solar Power Research Based on the Experiment

Essay Sample on Solar Power Research Based on the Experiment Introduction Sun The heat of the sun is about equivalent to burning a billion trillion tons of coal an hour. Even though only a small fraction of that heat ever reaches the earth it is still more then enough to power the whole world. People seemed to realize the importance of the sun around 30,000 BC. This was when people first started planting crops of wheat. They realized plants did better when planted in the sun over the shade. This caused them to worship the sun as a God. Many cultures built large and extravagant temples to worship the sun in. Other cultures built places to observe the sun in, such as Stonehenge in England. Different Types of Solar Panels There are three main types of solar panels. They are flat plate collectors, focusing collectors, and solar cells. The first kind is a flat plate collector. Flat plate collectors are fastened on the top of the roof of a house. They usually either heat the house or its water. A flat plate collector consists of a black rectangular frame, two or three sheets of glass, and copper plumbing. A flat plat collector uses the greenhouse affect. The sunrays go through the glass but can’t get out through the glass. The sunrays heat the water-filled copper tubes. Then the water is used to heat the home or water. Another type of a solar panel is a focusing collector. They consist of a mirror or mirrors which are focused in one spot. Some focusing collectors are solar furnaces, parabolic dishes and troughs and power towers. The first type is a solar furnace. A solar furnace consists of many mirrors that are aimed at a large curved mirror that is aimed at a large steel building. This building can get as hot as 5,790 F. Scientists use solar furnaces to run experiments to see how certain materials react to extreme heats. They are also used industrially to melt metals. The next kind of focusing collector is a parabolic trough and dish. A parabolic dish looks just like a satellite dish except the dish part is to reflect the sunrays onto the vocal point which is filled with oil. The heated oil is used to produce steam to turn a turbine. A parabolic trough uses the same principles as a parabolic dish. The only differences are how they look, the mirror is shaped like a large feeding trough and the vocal point is an oil filled tube. These are used for either commercial such as in a power plant. The last focusing collector is a power tower. A power tower has many mirrors all focused on a large tower. This tower gets extremely hot. The tower is filled with oil. When the oil is heated it is piped to a power plant where it is used to produce steam that turns a turbine. These are used for power plants. The final type of solar panel is a solar cell. A solar cell usually consists of two layers of silicon that produce an electric charge which is picked up by wires that are laid across the silicon. Solar cells can be used for anything from powering an isolated phone booth to a whole city or even an airplane. History Solar Energy started around 30,000 BC when people first desalinized water, or took the salt out of salt water. In 1,000 BC a king had the water in his castle heated by the sun. Romans passively heated their homes in about 100 AD. In a passive solar home there is no machinery, but there are windows and the floors and windows are made of materials that absorbs heat, like adobe. Solar heating was not used until the late sixteenth century when European scientists started experimenting with the power of the sun. In 1714 many people worked together to create the world’s first solar furnace. In 1720 a Swiss scientist, Horace Benedict de Sasure, built the first modern solar water heater. In 1774 Antoine Lavoiser made a printing press powered by the sun. Later in 1880 in Chile a solar desalinization system was made. Also in 1880 the first solar cells were made. Solar cells when originally made they were very expensive and were not available on the market. Now you can buy solar cells cheaply. Current Applications Today we use solar power to do many things. We use solar power for everything from calculators to large power plants that can power large cities. Most common solar power is used for small things. Many calculators are run by solar cells so they will never run out of batteries. Some watches run on solar cells, too. Also you can buy radios that run on solar cells. There are also many big things that run on solar power. Almost all satellites run on solar power, because otherwise they would run out of power. There are also large desalinization plants that use solar power in places where there is little or no fresh water. There are solar furnaces in many countries. Solar power is also used commercially and residentially. It is also used for many forms of transportation, but these are all in the experimental stage now. Solar powered cars may soon come out. Indirect Solar Power There are three forms of indirect solar power. They are wind power, waterpower, and ocean thermal energy. You might think these have nothing to do with each other or solar power but they do, in some way they each use the sun. The first type is wind power. The reason this is a form of solar energy is because the sun heats the air that creates air currents, or wind. The wind turns propellers that turn turbines which creates electricity. Wind power has been used for a very long time. Places in Europe like the Netherlands have had windmills since the Middle Ages. Though these windmills were used to pump water or to grind grain. The next form is waterpower. This is considered solar power because of the hydrologic cycle. The hydrologic cycle is water evaporating from bodies of water then coming back to earth in different places. This allows them to go back through dams to produce electricity. The water turns turbines, which then create electricity. Waterpower is also an old process it used to be used at sawmills and to grind down grain. The last kind of indirect solar power is ocean thermal energy. Ocean thermal energy is a power plant that uses the difference between the surface temperature and the temperature of the bottom of the ocean to produce electricity. When the cool water meets the hot water it produces steam that turns a turbine to produce electricity. The electricity is then sent to land through wires. This is solar power because the sun heats it. The Solar Future Today the use of solar power is very limited. Today we use very little active solar heating. Though in the future many more homes will be solar heated. More homes will have passive solar heating. Scientists want to make a satellite that will orbit over one place. This satellite would have giant wings made of solar power, this satellite would beam electricity down to earth. This would allow the solar cells not to be obstructed by clouds or buildings. Also ground solar power plants are predicted to be used more frequently. Another thing predicted to be popular is solar powered cars. The drawback of these cars is the fact that you can only travel at high speeds for a short time and they don’t work on cloudy days. Solar powered cars are only used for racing and experiments now. I think if there is another oil crisis there will be much more use of solar power. Solar power will be given more federal funding which will increase studies. The increased studies will make solar power cheaper and more efficient. This will make solar power more available on the market. CONCLUSION I think that solar power is a good alternative energy source. It has many advantages over fossil fuels. One is that the sun is free and does not have to be bought like other fuels. It also doesn’t hurt the environment and it is a renewable energy source. There are a few drawbacks to solar power. One is that it can be expensive to make and can be hard to use on cloudy days. Solar power is also difficult and expensive to store. Another bad thing is that silicon the material that solar cells are made of can be hard to find. If there is another energy crisis like the United States experienced in the 1970’s, solar power will be greatly increased. Federal funding will be increased to promote the studies of solar power. This will make solar power more efficient which will cause it to become cheaper. After the last energy crisis, most federal funding was decreased or stopped. This is very unfortunate because solar power would be far more advanced with more funding. EXPERIMENT Hypothesis: I think that some of the water will get into the inner bowl, this water will be fresh and the salt will still be in the outer bowl. I think that it will work better on sunny days than on cloudy days. Procedure: First I mixed two cups of water with two tablespoons of salt. I put the salt water into a large aluminum bowl. Then I put a small cereal bowl into the large bowl. I covered the large bowl with plastic wrap to keep the water from evaporating out of the bowl. After the bowl was covered I put a weight on the plastic wrap so the water would drip into the cereal bowl after it evaporated. I started this experiment at seven o’clock and then took observations at three and eight; I took all three observations for five days. Observations: On the first day at three there was some water on the plastic wrap after it had evaporated. At eight most of the water on the plastic wrap had dripped into the inner bowl. That day it was sunny. At seven the next there was a little more water in the small bowl. At three that day there was a little on the plastic wrap. At eight the little water on the plastic water had gone into the cereal bowl. It was cloudy that day. In the morning at seven there was no change from the night. At three that day there was a little water on the plastic wrap. At eight most of the water on the plastic wrap was in the cereal bowl. On the fourth day at seven the rest of the water was in the cereal bowl. At three the rest of there was a little on the plastic wrap. That night at eight the rest of the water on the plastic wrap was in the cereal bowl. It was partly cloudy that day. On the last day in the morning there was no change from the night before. At three there was a little more water on the plastic wrap. The water on the plastic wrap was in the small bowl. It was partly cloudy that day. Conclusion: My hypothesis was correct, but I thought more water would be purified then actual did get purified. The water in the cereal bowl had no salt in it. This experiment proves that solar power works and that it works better with no clouds than with clouds.

8 Bad Habits Bosses Hate the Most

8 Bad Habits Bosses Hate the Most It’s easy to get into bad patterns. But the good news is, it’s possible to break out of them! Whether you’re new to the workforce or you just want to make sure you’ve got your ducks in a row, it never hurts to think through the habits bosses find most annoying or repellent and make sure you’re not guilty of any of these professional faux pas. 1. Too Much/Too Little InitiativeIt’s important to show initiative. You should never be sitting around at your desk idly waiting for someone to tell you what to do. Show you love your job by finding productive and helpful things to do! But, on the other hand, don’t overdue it. There’s going the extra mile and then there’s going overboard. Aim for enthusiastic and thorough, not inefficient and excessive.2. Making ExcusesFirst of all, try not to do anything that would require an excuse in the first place. Get your work done. Get to work on time. And if you can’t get there in the time you have, don’t try to pawn off the responsibility. Just fix it. Stay honest and take responsibility for your part in everything. Okay, so maybe you did have a flat tire. Resist the temptation to embellish or to elicit sympathy. Just get back to work.3. WhiningThis includes moaning, moping, and complaining. In today’s economic climate, you’re lucky to have a job. Everybody hates staying late and having to sacrifice family time for work functions- even your boss. You’re all in it together. So save the grumbling and try to find ways to make it work instead.4. Asking Too Many QuestionsIt’s okay- good even- to ask questions when you need something clarified. It’s another thing entirely to ask redundant questions, or questions you could have found answers to on your own. If you can’t keep up intellectually, your boss will notice. Don’t hassle your boss or waste her time.5. Sloppy EmailsJust because some of your coworkers are e xtremely casual in their emailing habits doesn’t mean you should be too. Make sure to use complete sentences and to proofread. And for the love of all things holy, don’t reply all every time. Save that move for when it’s absolutely necessary.6. Taking AdvantageYour boss gives you a little leeway about clock-in times or coffee breaks- don’t take advantage of this and abuse the privilege. Your boss is super informal- don’t take advantage of this and become disrespectful. If your boss gives you an inch, be grateful. Don’t try to squeak out a foot, or worse, a mile.7. NegativityEspecially if your negativity means you badmouth the company- a fireable offense! But the same goes for being super rigid about what your job parameters are. Or being the one who’s always contrary and always saying no and shooting down others’ ideas.8. PolitickingTry not to get caught up in the politics and drama of office controversies. And definitely absta in from gossip. Nobody likes a coworker who is constantly pushing for better position and maneuvering behind their colleagues’ backs.

Case study Report Example | Topics and Well Written Essays - 500 words

Report - Case Study Example This type of operation was facilitated by the ownership of various brands of hotels operated by the Intercontinental Hotel Group. For instance, the Lido holiday inn. The multi-brand ownership strategy made it feasible for the company to operate in large scale. To be specific, a holiday inn hotel had 1000 standard rooms and 355 apartments. The IHG owned 26 holiday inn hotels, not to mention other brands. This ownership strategy was unique by then and was a source of competitive advantage to IHG. Second, the geographic locations of the hotels managed by the company were unique and complemented the purposes for which they were put up. That is, for holiday getaways. The unique geographical location, which could not be imitated by any other company, provided a sustainable competitive advantage for the company. Third, the company actively segmented its target market. Every target market had a suitable brand of hotel. This strategy ensured that the client’s needs were met. Fourth, the company was the first to establish a Chinese website for local customers to improve communication with a wider variety of customers who speak different languages such as English and Chinese. The website also provided a platform for reservations. This strategy was cost effective and efficient. Therefore, was a source of competitive advantage. Positioning strategy of the company involves making plans that make a company stand out among other rival firm. The Intercontinental Hotel Group has implemented the following strategies: first, the company has segmented its target market and provides hospitality services to match with the market need. For instance, on the onset, the company entered the China market with a unique service delivery strategy, including setting up of the first website in Chinese. The strategy facilitated the high market growth rate experienced. The open door policy in China in the year 1978 resulted in the rise in demand for

Amercia Dream through the stories Essay Example | Topics and Well Written Essays - 750 words

Amercia Dream through the stories - Essay Example In the analyzed short stories, namely â€Å"A Rose for Emily† by William Faulkner, â€Å"Young Goodman Brown† by Nathanial Hawthorn, and â€Å"Bartleby, the Scrivener† by Herman Melville, the main characters fail to reach the American dream in the form it is defined here. The story of the life of the main character of the short story by William Faulkner, Emily, is anything but the American dream. Once belonging to a respected family, she ends her life in the inmost poverty. In fact, it is she who is responsible for such dire conditions of her life. The concept of American dream described above suggests every person has equal opportunities and freedom to become successful in life. Emily neglected the opportunity to restore the reputation of her family. She believes that the rich stay rich even though they lose everything they once had. Moreover, she fences herself off the real life where she could have at least some friends and get help. She also does not take advantage of an opportunity to communicate with people and by this climb out of oblivion and poverty. Overall, it is the hidebound view of the upper-class society to which Emily believes she still belongs that do not let the American dream come true. The fail of the American dream can be also traced in the short story by Nathaniel Hawthorn titled â€Å"Young Goodman Brown†. The action takes place in colonial America, and during this historical period it is Puritanism, the purest of all the religion. In this short story, however, this religion is shown from the opposite point of view with all its atrocities and rigidity represented metaphorically by the author. In this very case, it is the society, in which religion is central, is what prevents Goodman Brown from reaching his American Dream. The matter is that when the main character experiences the transition from the ignorance and blind faith to the truth, he sees the real picture of what is

The JFK Assasination Conspiracy Essay Example for Free

The JFK Assasination Conspiracy Essay The Assassination at Dealy Plaza President John F. Kennedy was assassinated in Dallas Texas on November 22nd November as his limousine drove through Dealy Plaza. Thousands of people had lined up to view his motorcade including dressmaker Abraham Zaprieder whose film captured the assassination. This happened at 12.30 pm and the president was immediately rushed to parkland Hospital where, despite all efforts to keep hi alive, he was pronounced dead. The time of his death was 1 pm and against the wishes of the Texas authorities, his body was flown to Washington where a further autopsy was performed at Bethesda Naval Hospital. On the 25th of the same month, JFK was laid to rest at Arlington National Cemetery. What followed next was a series of events that left the entire American pubic asking questions of who killed JFK? Lee Harvey Oswald A former marine and defector to the Soviet Union named Oswald was arrested as a suspect on the same day at 2pm. According to the Oliver Stone movie JFK, the assassin spent his summer of 1963 in New Orleans. The attorney that would later investigate in the JFK murder Jim Garrison theorized Oswald as an outsider and Leninist. Oswald has returned to Dallas in 1962 to live in a milieu with intelligence overtones. He married a KGB official’s niece and questions always arise on how the assassin managed to get a high profile job. He was interrogated the whole weekend and as he was being taken to the county facilities, he got shot and died on National television by a local club owner Jack Ruby. False claims put forward by the warren report do not even center on the president’s murder but on Jack ruby. One claim is that Ruby was alone in the killing and that he entered the police basement with the help of the police department probably through an unlocked staircase. This was actually a contradiction as compared to the story corroborated by four officers one of whom failed a polygraph test. This shows conspiracy and corruption among the police. Even president lyndon was later quoted saying that he has no doubt that Oswald was not alone even though its Oswald who pulled the trigger. The Warren report This was ordered by JFK’s successor Lyndon Johnson on 29th November 1963 on executive order 11130 to investigate the assassination of both the president and his assassin. According to the Warren report, the members in the Commission were: Earl Warren, Chief justice of the United States and attorney general of California. Richard Russell, democratic senator from Georgia, and county attorney in that same state. Hale Boggs, a representative from Louisiana. John Sherman Cooper, Republic senator from Kentucky and United States Ambassador to India. Gerald r. ford, Republican representative from Michigan and Chairman of the House Republican conference. Allen Dulles, lawyer and former director of the Central Intelligence Agency. John J. McCoy, lawyer, former president of the international Bank for Reconstruction and Development, and former United States High Commissioner for Germany. It was assisted by lawyers, Internal Revenue service agents, a senior historian, an editor, and secretarial and administrative personnel who were assigned to the commission by Federal agencies at its request. Officials and the Federal government cooperated with the commission who has power to force witness statements by granting protection from being prosecuted to having the witnesses confess under compulsion, though no immunity was given to witnesses during the investigation. It reviewed reports from the FBI, secret service and held hearings with 552 witnesses. The report was presented to president Lyndon on 24th September 1964 and later on, 26 volumes of the Commission’s hearings were published. All these were put on the National archives and Kennedy’s family donated autopsy reports to the archives which were under limited access, and only recognize experts in pathology are approved by the family’s representatives. Critics came up challenging the report’s findings as it had more controversies yet there were witnesses. Oswald was ruled to have fired three bullets with one missing target, and the remaining two which hit JFK and the governor John Connally. Its not understood how Connally was wounded soon after JFK thus the Single bullet theory which indicated that one bullet hit both men. Kennedy’s aid Kenneth O’Donnell who rode in the motorcade later said that he was pressured by the FBI not to say what he believed that, the gunfire came from the front and not the back as indicated by the report. The Single bullet theory The theory’s proponent was Arlen Specter, the present Pennsylvania senator. The Warren commission took the theory and concluded that Oswald was the lone killer of JFK. It states that one bullet his JFK in the back and exited on is neck, hitting Connally in the back, leg and, wrist.   This has come to be termed as the magic bullet. One bullet missed and the third and fatal one hit Kennedy on the head. Dallas doctors argue that it was an entrance wound but the doctors who actually saw the wound insist that it is an exit wound. Conspiracy authors claim that because of the collar slits, it had to be an entrance wound. Which is also a contradiction because, how can a bullet which was able to penetrate the tracheotomy fail to penetrate Kennedy’s shirt. In Dr. charles Carrico’s statement before the warren report, he said that the wound was above the tie and later on, he says that it was in the â€Å"lower 1/3† of the neck. In the movie JFK, Kevin Costner gives a conspiracy version of this theory, what really happened if Connally was seated in front of Kennedy at the same height and facing ahead? The Garrison Investigation Jim Garrison, a New Orleans District Attorney began investigating the assassination in 1966 after arresting a David Ferrie, a pilot and anti castro activist who was connected to Oswald. This led to the arrest of Clay Shaw, a New Orleans Businessman. Garrison believed that the CIA, anti-Castro Cuban exiles, and homosexuals were involved in the assassination. Garrison’s main witness was Perry Russo who claimed that he had attended an â€Å"assassination party† where Shaw, Oswald, and Ferrie discussed on murdering the president. Later on, Russo’s statement was questioned when it emerged that he was hypnotized and a drug called sodium pentothal used on him. Before the hypnotization, Russo failed to mention the party. This evidence led to clay Shaw being acquitted. In the Oliver Stone movie JFK, we see the jury foreman Sidney Herbert claiming that after the trial, he thought more decidedly on the warren report. Another film The JFK Assassination: The Jim Garrison Tapes, it can be seen that Russo later returned on his earlier version of statement that there was actually an assassination party. The Medical Evidence An HSCA (House Select Committee on Assassination) was created to handle assassinations of both JFK and Martin Luther King. It has special panels that examined the physical evidence and their finding was a fact that a knoll had been used but missed. The medical panel challenged this when they reaffirmed the single bullet theory earlier visited. The Parkland Hospital doctors’ findings appeared incorrect when the HSCA reports showed that the back of the head was intact with blood free hair, with only a small red spot near the cowlick. In contrast, doctors describe a large gaping wound with brain tissues from the cerebellum extruding. In Dr. Charles Crenshaw’s book conspiracy of silence, he claims of Kennedy’s head at the back blown off, indicating that the grassy knoll was sot from the front. On page 2, he states that the entire right hemisphere was obliterated, and in age 86, he claims that the right hemisphere looked like a crater, an empty cavity. The wound on his neck indicate an entrance wound thus it was a shot from the front. He also claims that knowing that there existed a conspiracy, doctors were afraid to talk. Between the two hospitals, Kennedy’s body had been altered. This leaves us with questions. For instance, was the back of Kennedy’s head blown out? Are the autopsy photos faked? The Bogus Evidence Conspirators believe that the evidence against Oswald was tampered with by the Dallas Police. The police claimed on recovering three cartridges which perfectly correspond to the three shots heard by people at the Plaza. But an Author by the name of Noel Twyman claims that only two spend rounds were found. Evidence of the authorities suppressing evidence was seen when after the assassination; a government agent and an officer were seen picking up a slug. One of Jack ruby’s strip dancers Karen Carlin whose stage name was â€Å"little Lynn â€Å"also came forward and testified that she known of the plot to kill Oswald. After mysteriously disappearing, she came back in 1992 and claimed that Ruby had told her to call him on Sunday morning and later he would send her $25 for her rent and shopping, just before Oswald was shot. This was to create an alibi and justify that it was just an impulsive act of revenge that he shot Oswald. Karen said that Gary Shaw, Carlos Marcello and Santos Trafficante were behind the conspiracy to kill Oswald. It is also seen how witnesses, even the most sober ones made wild and wacky statements. For instance, one witness named JC price claimed that Kennedy and Connally were in different cars and last shot came five minutes later after the first ones. Austin Miller testified that the shots came from inside the limousine. Jack Franzen said that secret service agents were behind the limousine and some had firearms. A.J Millican was quoted testifying that, â€Å"Just after the Presidents car passed, I heard three shots come from up toward Houston and Elm right by the Book Depository Building, and then immediately I heard two more shots come from the Arcade between the Book Store and the Underpass, and then three more shots came from the same direction only sounded further back.† Who Killed JFK? This is the question that will forever remain in people’s mind. The fact that many groups or people had motives to murder JFK makes the case even more difficult and wit many unanswered questions. There are claims that Kenney was killed because he withdrew the American troops from Vietnam during the cold war. Other’s say that Oswald was impersonated by Fidel Castro, the Cuban President who it is believed had motives too because the CIA, Cuban exiles and mob members wanted to eliminate him. Fletcher Prouty believes that it was a coup d’etat to overthrow the government and that is wasn’t an assassination of one man. The shock of the assassination has been covered up and the case is one of the greatest unsolved crimes of the century forty years down the line. Today, polls show that millions of the American public believes that there was a conspiracy and Oswald wasn’t alone. The opinion poll is shown to have risen from 52% in 1963 to 89% in 1993. Journalist Hugh AynesWorth believes that this is the most investigated homicide in history and being a witness himself, he says that e has spent most of his career life in investigating the various theories that have come up in the JFK murder. In his book, he speaks o himself as a young Dallas newspaper reporter who was right in he spot as history unfolded in his very own eyes. To him, its pure and simple that there is no evidence in the unfolding theories. Although the Warren report is faulty, Hugh has no doubt it unfolded right. Works cited Peter Dale Scott, Deep politics and the Death of JFK Scott talks of a conspiracy as seen by the police department in Dallas.    James H. Fetzer, The Great Zapruder Film Hoax: Deceit and Deception in the Death of JFK As much as the film captured the murder, here were still controversies with the doctors on the ext spot where the bullet hit JFK. Charles Crenshaw, conspiracy of Silence Shows the many conspiracy theories and Dr.Crenshaw’s story as a physician in Parkland Hospital    JFK, an Oliver Stone Movie    The JFK Assassination: The Jim Garrison Tapes JFK case still not closed, by Joe Havely CNN, The documentary shows the 40 years that have passed and still, the Kennedy assassination continues to fascinate. The Warren Report, http://www.jfk-assassination.de/warren/index.php viewed on 25th April 2008 Gives a detailed view on the creation of the report, its members, and the critics. The Kennedy Assassination by John McAdams An article on the events from the death of JFK, to the conclusions as per today.   Ã‚  Ã‚   The JFK Assassination, http://www.prouty.org/giamarco.html, viewed on 23rd  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚   April 2008   Ã‚  Ã‚  Ã‚   The David Giarmaco story of 1998 when he revisited the JFK murder.

Zinc hyperaccumulation :: science

Zinc hyperaccumulation Zinc hyperaccumulation in Thlaspi caerulescens as a chemical defence against herbivory ABSTRACT Thlaspi caerulescens is one of several plant species known to accumulate heavy metals in excess of 2% of their above ground plant biomass. The reasons for hyperaccumulation are unknown, but several studies conclude that it may be a plant chemical defence. This has been of interest to biologists because these metals are usually toxic. The accumulation of these metals may serve as a model for coevolution. We examined the effects of zinc hyperaccumulation in Thlaspi on Xanthomonas campestris and found that the plants containing zinc thrived when inoculated with this bacteria, while plants not containing zinc showed signs of deterioration. INTRODUCTION There are several wild plant species that have the ability to accumulate high quantities of heavy metals in their above ground biomass, up to three percent or more. Many of these plants are found in the Brassicaceae family throughout Europe and the British Isles. These plants thrive on mineral outcrops with calamine and serpentine soils rich with high levels of zinc, cadmium, and nickel (Baker et al, 1994). Several theories have been advanced on the reasons for this hyperaccumulation. Boyd and Martens propose that it could be a form of drought resistance, inadvertent uptake, interference, tolerance or disposal of metal from the plant, or a chemical defence against herbivory or pathogens. Several studies have supported the chemical defence hypothesis. Martens and Boyd (1994 and Boyd and Martens, 1994) showed that nickel hyperaccumulation is an effective defence against insect herbivores in two different feeding experiments. Boyd et at (1994) also demonstrated that nickel hyperaccumulating plants resisted pathogens including Xanthomonas campestris. Thlaspi caerulescens J. and C. Presl (Brassicaceae) is a hyperaccumulating plant found in the British Isles. It has been shown to accumulate 10,000 ppm (>1%) of its biomass in zinc (Bakeret at, 1994), and Pollard and Baker (1997) suggest that this is an effective defence against herbivory for this species. This paper explores the effects of zinc hyperaccumulation in Thlaspi as a defence against Xanthomonas campestris. MATERIALS AND METHODS Thlaspi caerulescens seeds were collected in Cloughwood, U. K. These seeds germinated on polyester beads supported in expanded polystyrene rafts floating on one-tenth strength Rorison's solution (Hewitt, 1966). These containers were placed in a Conviron E-15 environmental growth chamber at the following settings: 20 C, 90% RH, 16 hr day, and 8 hr night. After three weeks, twenty seedlings were transferred to 4 rafts composed of expanded styrene on polyethylene, each supporting five plants individually.

How Has the Position of Vice President Changed

How has the position of the vice president changed? (30 MARKS) The position of the vice president has drastically changed in many areas such as the way in which they are voted in, but it is still unchanged in areas like the powers given to the vice president in the constitution. As the role of the federal government and the presidents responsibilities grew presidents began to see the vice-presidency as a source of help in running the executive branch of government.Beginning with the Eisenhower- Nixon administration 1953-61, vice presidents were given more high profile tasks and became in some cases significant presidential advisors in 1977 vice-president Mondale was shown the presidential daily briefing and was given an office in the west wing, Mondale was the first vice-president to receive this but after Mondale this was the normal thing for the vice-presidents.The improved position of the vice-presidency has attracted more significant people to seek the office, over the past 50 ye ars the list of vice-presidents has been a distinguished one, including names such as Lyndon Johnson and Al Gore, of the eleven vice-presidents who held office between 1953 and 2008 four went on to become president, while a further three were selected to run. The election of vice-president Dick Chaney was seen as a bit of a joke not because he was not qualified enough but because he was more qualified than the president George W. Bush, it was said ‘if Dick Chaney were assassinated, Bush would have to become president'.Dick Chaney did not take the roles of a normal vice-president he had lots more power Bush gave Cheney access to ‘every table and every meeting' making his voice heard in whatever area the vice-president feels he wants to be active in. The first two decades of the nations history, the vice-president was the person who came second in the balloting of the electoral college, until the 1804 the 12th amendment changed the vice presidential system, from then on it was elected on a joint ticket with the president so the choice for the potential president Is the choice of the people.Modern day vice-presidents have take on new roles, many have played a role in legislation in congress, this is the role that Dick Chaney who was former member of the house of representatives took for George W. Bush and this is the role that Joe Biden a senator for 36 years plays for president Obama. The vice-president often becomes the party worker, electioneer and fund raiser, Cheney played this role in the run up to the 2002 mid term elections, according to the times Cheney was â€Å"drawing packed crowds and raking in millions of dollars for Republican candidates†.The vice-president may become a major spokesman for the administration, Gore became a regular face at the podium on environmental issues as well as over government efficiency drives. However vice-presidents have always had four powers in the constitution which are still in place today, the vice- president is the presiding officer of the senate, even though this function is rarely performed by the vice-president is usually assigned to junior members of senates chambers, the vice president can also break a tied vote in the senate, which can be very helpful for the president as when there was a tie breaking vote in 2001 on President Bushes $1. trillion tax cut Dick Chaney voted in favour of President Bush, between 1981 and January 2009 vice presidents were called upon to break tied votes on 19 occasions eight of these by Dick Chaney. The vice-president is given the task of counting and then announcing the electoral college results, so in 2001 vice president Al Gore had to announce his defeat in the previous November election.The previous three powers are either of little importance or occur rarely or both, it is the final power that gives the office of vice-president its potential importance. The vice-president becomes president upon death, resignation or removal of the presid ent from office, this has occurred on nine occasions, four times following the assassination of the president, four times following the natural death of the president, and once following the resignation of the president, president Nixon resigned in 1974 after the Watergate scandal.The insignificant powers of the office, coupled with this potential importance led the first vice-president, John Adams to remark of the post ‘in this I am nothing but I may be everything'. More recently the vice president has acquired a fifth power ‘to become acting president if the president is declared, or declares himself disabled, this has been used three times but only for a short time, Dick Chaney was acting president twice but for just over two hours.So there has been some drastic changes in the position of the vice-president, they have taken on a lot more responsibility than they have previously had, gradually getting more and more power, but it depends on the vice president such as Di ck Chaney he was a very powerful vice-president which could be due to his expertise and the lack of experience of Bush in comparison, but some parts of the vice-presidency are still the same as they are still written in the constitution.

Application Letter Essay

I am writing to apply for the position of fireman in the Bureau of Fire and Protection. As requested, I am enclosing a completed job application, my certification, my resume and three references. The chance presented in this listing is very interesting, and I believe that my strong practical experience and education will make me a very competitive candidate for this position. The key strengths that I possess for success in this position include: I am magnificently physically fit and capable in order to sustain the job’s high level of emotionally, mentally and physically demanding activity. I am always ready to jump into action despite the down periods in my job. In addition to attempting to put out fires that might need to help treat victims and perform other vital life-saving or public functions, I provide exceptional contributions to safety of those involved in a fire and offering medical aid to the injured. With a BS degree in Computer Technology and a Civil Service Exam passer last  October 2013, I have a full understanding of the full life cycle of being a fireman. I also have experience in learning and excelling at new technologies as needed. Please see my resume for additional information on my experience.

The Search for Monotheism in the Ancient World essays

The Search for Monotheism in the Ancient World essays As we look back on Early Civilizations and highlight every contribution they have significantly passed on to us, there is one thing that vividly stands out and has had the most lasting impact: religion. In the beginning, the thought of an omniscient, all-powerful God that created life and controlled the universe was irregular and not believable to people. The reason for this pessimism was because the belief in one God could not explain why natural disasters regularly occurred. People did not understand how an omnipotent God could let catastrophic events and terrible occurrences exist, leading them to conclude that a number of gods controlled certain sectors of the globe. They also could not understand why the good suffered and bad prospered. Polytheism, the belief in more than one God, nourished what people wanted to believe and it was the primary form of religion for many years. But more importantly, polytheism provided explanations of the fundamentals for understanding relig ion during the fourth millennium B.C. In this paper, I will compare and contrast the Enuma Elish, Genesis, and Hymns to the Sun and Nile. Each documentation will differ in belief and context because of each cultures concept, locale and source of agriculture, but all found a similar bond in religion: the search for monotheism. In the beginning, the existence of religious documentations was clearly present. With the help of archeologists and anthropologists, we have evidence today that ancient Mesopotamia devised stories of supernatural creations to explain the forces of nature and fundamental elements of science. The ideas and beliefs that the Mesopotamians shared lead one to believe they lived in a simplistic, anarchist society. The religious epic of the New Years Festival that defined their cultural origins was Enuma Elish. The story gives the notion that early religion in the ancient near east concentrated much on subjective folk...

Free French Mobile Applications

Free French Mobile Applications If youre looking for free French apps, youre in luck: there is a wide variety, from dictionaries to learning programs. Heres a list of mobile applications related to French.2Lingua KidsLearn basic French in this app written by and for middle-school students.Classics2GoA small collection of French books.Free French TutorInteractive study tools.FrenchRadioFind French radio while youre on the go.French StartSmall app to begin learning French vocabulary.French Verbs 650Learn French verbs and their English translations.French Word of the Day (Declan Software)A new word every day, with sound file.French Word of the Day (Prometoys Limited)Daily word with translation and sample sentence.French WordPowerDaily word with pronunciation and translation, plus quiz and option to save words.Learn French - French AppsFour apps for learning a bit of French: alphabet, numbers, gender, and phonemes.Learn French by LoquellaLearn and practice French grammar, vocabulary, and pronunciation with lessons base d on the Foreign Service Institutes method and materials. Learn French QuickFrench flashcard program.Learn French with BusuuTwenty lessons with option to purchase more.Littrà © French dictionaryDictionary of French from the 17th-19th centuries.Living Language - French for iPadEleven free French lessons, with the option to purchase 35 more.RATPOfficial app to help you make sense of Pariss mà ©tro and bus.SpeakEasy French LiteThe free version includes 169 French travel phrases.If you dont have a mobile device, you might be interested in similar online and offline resources:     French verb conjugator  Ã‚  Ã‚  French vocabulary lessons and lists  Ã‚  Ã‚  French word of the day

Mandatory Voting Essay Example | Topics and Well Written Essays - 1000 words

Mandatory Voting - Essay Example While the current electoral system is not producing a high percentage of citizens voting, the alternatives - to levy incentives or penalties or lower the voting age - do not address the core problems. The American voting process is a well-thought out plan that works, however voter turnout will not increase until citizens relate the importance to their own well-being and lowering the voting age would not help; conversely the institution of an "apathy tax" as penalty for not voting could be effective. As Miller states, the current electoral system in the United States is working just as it should. However, there is no doubt that with the current system, voter turnout has been poor. One of the main reasons for this is that citizens do not view voting as being in their own best interests. They reason that there is nothing tangible realized from voting; no strong motive to do so, and consequently, they do nothing. This is, according to John Dean, columnist for Findlaw.com and former counsel to the President of the United States in his 2003 article "Is It Time to Consider Mandatory Voting Laws", a national disgrace, and rightly so. Generation after generation, the percentage of citizens voting declines. It is critical to note that without a standard in addition to the established voting system, the present problems and issues keeping citizens from the polls will continue. Voters must be prodded in a way which appeals to their sense of obligation to society in order to become properly registered and exercise their right to vote. Citizens must remember there is a social contract with their government which loses its legitimacy if they do not vote. When voters are lax about upholding their end of the agreement, it becomes imperative to look more closely at the role of government and whether the electoral process is focused on the results at the polls or what is the best process for electing the country's leader. It will take a concerted effort to convince citizens to forgo their natural apathy and do what is best for the democratic system of the United States, however, it is not the system itself which must be reformed. Lowering the legal voting age has been proposed by some but to do so would be ineffective in ensuring mature, informed votes. Citizens younger than 18 are not mature enough, nor have they sufficient experience to make an informed voting decision; many would simply vote in tandem with their parents or other influential adults without the ability to use their own critical judgment. However, targeting 18-year-old voters would be very beneficial, as Democrat Joe Coto proposes, according to the 2007 Sacramento Bee article by Jim Sanders, "Register to Vote, Get Diploma". Coto has recently authored a bill, AB 183, which would induce young people to register to vote or be penalized by not receiving their high school diploma. In this way, the message becomes clear that our political system requires citizens "to keep

Family violence Research Proposal Example | Topics and Well Written Essays - 750 words

Family violence - Research Proposal Example In this regard, Tjaden and Thoennes (2000) notes, â€Å"Approximately 1.3 million women and 835,000 men are physically assaulted by an intimate partner annually in the United States† (p. 34). The primary victims of these violence and crimes in the families are mostly women and children. In 2001, â€Å"intimate partner violence made up 20% of all nonfatal violent crime experienced by women† (Rennison, 2003). Exposure of Children to family violence is supposed to have adverse impacts on their psychophysical health and cognitive development. These adverse impacts include emotional disorder and distress, delays of physiological and cognitive growth, post-trauma stress, and disruptive external behaviors such absentmindedness, aggressive behaviors and unruliness. The internal symptoms of the violence-affected children include somatic disorders, mental depression, anxiety, etc. Aim of the Study This study aims at contributing to the current literature on the impacts of family on children with new information which will help researchers, scholars and other people who are involved in intervention programs for children exposed to family violence. The author of this study will focus on the following areas: a. What are the most common causes and consequences of family violence? b. The violent partners’ perception of the effects of their behaviors on their children. c. The violent partners’ perception about the way-out of the violence. Inalienability of Family and Children’s Wellbeing from each other: A Theoretical Exploration Children’s wellbeing and sound parental relationship are closely intertwined with each other. Epistemologically, children’s wellbeing refers to an overall psychophysical growth of a child such as cognitive growth, socialization, moralization, etc. Scholars in the field of child’s development, assumes family as an entity that stimulates and facilitate a child’s psychophysical development in many explicit and implicit processes. A family, if viewed from a child-developmental perspective, can be considered as an amphitheater which contains both visible and subconscious components of a child’s growth (Lerner, 1989, p. 34). Researches in this field show that a child’s personality traits, attitude, belief, behavior are grossly influenced first by the interplays between a child and its surrounding in a family. In this regard, Marian (1995) et al says, â€Å"The family is seen as a dynamic context in which the child is both transformer and transformed† (p. 23). Consequently, ‘parenting’ –both directly and indirectly- is supposed to exert huge influence on the development of a child. In his book, Belsky (1984) focuses on what factors of parental behavior and how they influence the child-rearing and the development of a child. In this regard, Belsky as well as Bronfenbrenner emphasize on two factors, husband-wife relationship and parent -child relationship, as most influencing. In order to elucidate the reasons of child-abuse, Belsky (1984) notes, Specifically, marital relations, social networks, and jobs influence individual personality and general psychological well-being of parents and, thereby, parental functioning and, in turn, child development.† (p. 84) Importance of Healthy Parental Relationship on Children’s Wellbe