Nitrogen essays

Nitrogen essays Nitrogen is nonmetallic, odorless, colorless, and tasteless gas. Nitrogen makes up about 78% of the earths atmosphere. Rutherford discover nitrogen in 1772. On the periodic table of elements Nitrogen is diatomic and has the chemical symbol of N. The atomic number is 7, and its atomic weight is 14. There are 7 protons, neutrons, and electrons in a nitrogen atom. The gas can be condensed in liquid state that has a boiling point of -195.8 degrees celcius or froze at -209.9 degrees celcius. Even though nitrogen does not combine easily with other elements, the atoms are parts of many chemical There are many uses of nitrogen. Manufacturers can obtain pure nitrogen by making liquid air. After that they separate the nitrogen from the oxygen and other gases in air by distillation. After distilled nitrogen is collected under pressure in specially designed metal containers. The most important use of nitrogen is in the production of ammonia (NH3). Ammonia is used as a fertilizer, as a refridgerant, and in the production of nitric acid and other chemicals. Nitrogen compounds are also important to the making of drugs, dyes, explosives, poisons, and synthetic fibers. Nitrogen is one of the most important elements on the periodic table. All organisms must have nitrogen to live. Proteins are formed of amino acids, which nitrogen is part of all the amino acids. Nitrogen is always being removed from the air and teturned to it in a series of chemical reactions known as the nitrogen cycle. The nitrogen cycly is the circulation of nitrogen among the atmosphere, the soil and water, and the plants and animals of the earth. People influence the nitrogen cycle, but it is harmful to the atmosphere. The use of nitrogen fertilizers adds nitrogen to the soil, and then rain water carries unused fertilizer and other nitrogen compounds into streams and lakes, where the ...

Double Negatives in Spanish

Double Negatives in Spanish I cant get no satisfaction. I dont know nobody. You aint seen nothing yet. Because they contain double negatives, the above English sentences are considered substandard (although, of course, people often talk like that in real life). But theres no such prohibition in Spanish. In fact, in many cases, use of double negatives is required. Even triple negatives are possible. Double Negatives in Spanish Double and even triple negatives are not unusual in Spanish even though they are usually considered improper in English.Generally, negative and affirmative elements (such as the equivalents for never and always, respectively) shouldnt be used in the same Spanish sentence.Double-negative Spanish sentences can usually be translated in more than one way, such as I dont know anybody and I know nobody. Double Negatives Not Viewed Negatively in Spanish Grammarians may tell you that English doesnt use double negatives because the two negatives contradict each other and make a positive. (In other words, I dont know nobody is the same as saying I know somebody.) But negatives arent thought of in  that way in Spanish - the negatives are seen as reinforcing rather than contradicting each other. Although sometimes the second negative is used to make a stronger statement just as it is in substandard English, in most cases it is merely part of the structure of the sentence. In Spanish, the most common negative terms in addition to no (no, not) are apenas (barely, scarcely, hardly), jams (never), nadie (nobody), ni (neither, not), ninguno (none, no), ni siquiera (not even), nunca (never), and tampoco (not even, nor, neither). Most of these terms in Spanish have a corresponding affirmative term: algo (something), alguien (somebody), alguno (some), siempre (always), tambià ©n (also), and siquiera (at least). How To Use Double and Triple Negatives As a general rule, a sentence cant include both affirmative and negative terms; where one element of a sentence (subject, verb, object) includes a negative term, the other elements should use a negative term where a term is needed. Also, with the exception of nunca jams (see below), not more than one negative term is used before the verb. By following these rules, it is possible to have one, two, or three negatives in a sentence, as in the following examples: Apenas come. (She barely eats.)Apenas come nada. (She barely eats anything.)No tengo ninguno. (I dont have any.)Nadie sabe eso. (Nobody knows that.)Jams fumo. (I never smoke.)Tampoco comià ³. (She didnt eat either.)Tampoco comià ³ nada. (She didnt eat anything either.)No hablà ³. (He didnt speak.)No dijo nada. (He said nothing.)No le dijo nada a nadie. (He didnt say anything to anybody.)No compro ninguno. (Im not buying any.)Nunca le compra nada a nadie. (She never buys anything for anybody.)No come ni siquiera pan. (He doesnt even eat bread.)Ni siquiera come pan. (He doesnt even eat bread.) Note that in some cases (such as the final two examples in the chart) it is possible to say the same thing in more than one way, with either one negative or two. Generally, that is because in Spanish the subject can come before or after the verb; where a negative subject comes before the verb, a no is not needed with the verb. In this example, ni siquiera no come pan would not be standard Spanish. There generally isnt much difference in meaning between using one negative or two. Note also that various translations to English are possible. Tampoco comià ³ could be translated not only as she didnt eat either but also as neither did she eat. When a verb is used with a negative term, it isnt always necessary to use a negative term after the verb. For example, No tengo amigos (I dont have friends) is grammatically acceptable. What you shouldnt do, though, is use an affirmative term for emphasis. If you want to say I dont have any friends, use a negative term after the verb: No tengo ningà ºn amigo. Other Uses of Double Negatives There are at least two other cases where a double negative is used for added emphasis: Nada as an adverb: When used as an adverb in a negative sentence, nada usually can be translated as at all. No ayuda nada. (He doesnt help at all.)No usa nada los ordenadores. (He doesnt use computers at all.) Nunca jams: When these two negatives meaning never are used together, they reinforce each other. Nunca jams vuelo. (I never, ever fly.)Dijo el cuervo, nunca jams. (Quoth the raven, nevermore.)

Reference list Essay Example | Topics and Well Written Essays - 500 words

Reference list - Essay Example Since early involvement is crucial in the reduction and prevention of aggression, this volume encourages professionals and researchers to acknowledge animal abuse as a human public health problem and a significant issue, which should be incorporated as a syllabus topic in teaching. The book examines the relationships between human interpersonal violence and animal maltreatment, expands the research scope in this developing area, and offers practical documentation and assessment strategies to help researchers that confront violence to perform their duties better through attending to such connections. The author incorporates data on seven kinds of child neglect and mistreatment – ranging from physical and sexual abuse to maltreatment by drug or alcohol-addicted parents – and summarizes the intricate ways by which abuse effects on later functioning of psychology. The author reframes conventional conceptions of psychopathology and defines approaches for treatment to abuse-linked Post Traumatic Stress Disorder (PTSD), self-destructive behavior, borderline personality disorder, interpersonal dysfunction, and impaired self-reference. This book is a useful resource for abuse professionals and for overall therapists who wish to know the relationship between several forms of psychological trauma and the permanent effects of child abuse. Child abuse is not a new social issue, neither is it a deviant or haphazard activity. It is deemed to be an accepted portion of our tradition. While domestic aggression is currently politically recognized as among the most pervasive and entrenched form of hostility within our society, issues of child abuse have yet to gain the same scope of consideration. This is in spite of the actuality that every year, thousands of kids, suffer sexually, physically, and psychologically as an effect of

Statistic paper Statistics Project Example | Topics and Well Written Essays - 1500 words

Statistic paper - Statistics Project Example A significant correlation was observed between days and charges, r(287) = .80, p Hospital managers bear the overall authority over the running of the hospital. However, their authority is usually curtailed when administrative duties come into play. This is due to the overpowering roles of physicians. Physicians control a significant portion of hospital costs and the length of time that a patient stays in a hospital. They also determine the drugs used in treating a patient and determine the suppliers. Despite these crucial roles, the physicians are not employees of the hospital. At times, hospitals give individual physicians admitting privileges and periodically review their performance. However, the hospital’s influence over various expenditures remains at the minimum. On the other hand, the revenues of the hospital are largely dependent on the patient’s insurance coverage. This insurance coverage may cater for a more or less fixed amount and is classified using the diagnosis related group (DRG) system. It may also cater for a percentage of the hospital bill. The performance of a physician is crucial to the general well-being of a patient. An outstanding performance

The Watergate Affair Essay Example for Free

The Watergate Affair Essay The Watergate Affair was perhaps one of the greatest political scandals to have affected the Ameican government. Its significance was this scandal involved officials leading up to the highest levels of the government which ultimately led to the White House which was during the incumbency of President Richard Nixon. The immediate cause of this scandal began when several men were arrested for burglarizing the headquarters of the Democratic Party at the Watergate Hotel in Washington, DC hence the name of the scandal. These men were caught rummaging filing cabinets for vital documents and electronic wiretapping devices were also found in their persons; apparently, they were planinng to bug the office and electronically eavesdrop on any conversation taking place there. The underlying cause behind this operations was the Nixon Administration was concerned on how confidential government reports were being obtained by the Democrats which served as political ammunition against Nixons reelection bid. It was later revealed that the men involved were aides of the Presidents re-election team though initially, President Nixon denied any involvement and subsequent news reports revealed that a massive cover-up was being conducted as an attempt to cover up any involvement by the President. Subsequent investigations by the media revealed that the White House has formed a secret unit called â€Å"Plumbers† for the purpose of spying reporters and government officials who may have been leaking information to the former (Szulc, 1972, p. E2; Rugaber, 1972, p. 220). The media had been faithfully following the events related to what became known as the Watergate Scandal which had by far, overshadowed the achievements of Nixon during his presidency and hounded him all throughout. These revelations of covert government operations within the United States prompted the Senate to form a committee on the campaign activities of the President on February of 1973. Throughout the year, more revelations came out as the pressure on those responsible was intensifying ranging from being sworn to silence and destroying evidence of involvement by the White House. This then prompted the Senate to subpoena Nixon who had repeatedly refused to appear and even release the tapes when demanded, further heightening the suspicion of a cover-up as it was revealed when these tapes had been edited by the time it was released to them (Apple, 1974, pp. 57-58). The constant reporting of the media of what the Senate committee revealed had convinced the American public that Nixon should be impeached and (possibly) made to resign if found guilty (Kovach, 1974, p. 1). Based on the initial investigations by the Senate and its appointed prosecutors, Nixon was charged by the Senate for obstruction of justice, abusing his power and showing contempt of Congress by refusing to appear in the hearings and these became grounds on serving an impeachment against him. Seeing that he had proverbially painted himself in a corner and by the 9th of August, 1974, Nixon went on national television to announce his resignation to spare himself the indignity of being served the impeachment following the availability of more evidence that would furher incriminate him. The Watergate Affair revealed how the government could abuse its power in conducting spying and even conduct political sabotage and it was unfortunate that in its desire to keep certain matters of the state a secret, its agents were caught and led to severe repercussions. References Apple, R. W. (1974, January 5). â€Å"Nixon Rejects Subpoenas from Senate Committee for 500 Tapes and Papers. † New York Times. pp. 57-58. Rugaber, W. (1973, January 14). â€Å"Mystery, Comedy, Etc. Dirty Tricks. † New York Times. p. 220. Szulc, T. (1972, June 25). â€Å"From the Folks Who Brought You the Bay of Pigs. † New York Times.

Wuthering Heights :: Essays Papers

WUTHERING HEIGHTS MAIN CHARACTERS Catherine Earnshaw ~ She is the daughter of Mr. Earnshaw and the sister of Hindley. She is also Heathcliff’s foster sister. Heathcliff and Catherine are in love, but she marries Edgar Linton instead. When Cathy died, she wanted both Heathcliff and Edgar to suffer because Edgar never understood why she loved Heathcliff and Heathcliff because he never knew why she married Edgar. Catherine Linton ~ She is the daughter of the older Catherine and Edgar Linton. Her mother Catherine died shortly after she was born. She married Linton Heathcliff and became Catherine Heathcliff. Then after her husband’s death she married Harenton and became Catherine Earnshaw. Mr. Earnshaw ~ He was a farmer and father of Hindley and Catherine. He is a kind- hearted man who takes Heathcliff in after he found him lying on the street, although his family protested he still took him in. Edgar Linton ~ He is Isabella’s older brother, who marries Catherine Earnshaw and is the father of there daughter, Catherine Linton. He is a gentle bred, refined man, a patient husband and loving father. Ellen Dean ~ Ellen is one of the main narrators. She has been a servant for the Linton’s and Earnshaw’s all her life. She knows all of them better than any one else. People that are close to her call her Nelly. Frances Earnshaw ~ She is Hindley’s wife. She was a rather giddy woman. She displayed a great fear of death, which tells us why she died of tuberculosis. Harenton Earnshaw ~ Harenton is the son of Frances and Hindley Earnshaw. He marries young Catherine and grows up with his Uncle Heathcliff; his both mother and father die. He is ruff and uncultured having been kept from civilization from so long by Heathcliff. The Wuthering Heights belongs to Harenton even though Heathcliff runs the household. Hindley Earnshaw ~ Is the only son of Mr. and Mrs. Earnshaw, he is also Catherine’s older brother. He becomes a violent alcoholic after his beloved wife Frances dies. Also Hindley never got along with Heathcliff because Hindley felt rejected from his father’s affection, because Heathcliff the favorite child of Mr. Earnshaw. Heathcliff ~ He is taken in by Mr. Earnshaw and raised along with Catherine and Hindley. Catherine was a moving force in his life, and he hated all those who stood between him and his beloved Cathy. However, he was of unknown descendants and was found in Liverpool starving on the streets.

Gastrin

What is gastrin? What is its source? What are its target cells? What are its functions? gastrin is one of the many hormones that stimulates secretion of digestive acid by the parietal cells that lining the stomach. The G cells produced and released the gastric acids in the stomach and the duodenum to allows the stomach to break down proteins swallowed as food and absorb certain vitamins, gastric acids also disinfectant and kills most of the bacteria when entering the stomach with food that reduces the risk of infection in the stomach. 2.What causes the release of gastrin? The G cells trigger the release of gastrin in the blood when food enters the stomach, as gastrin level rises in the blood, the stomach will release gastric acid to help digest and break down food. 3. What cells produce stomach acid? What is stomach acid? Parietal cells or oxyntic cells are cells that produce stomach acids. Stomach acid is a digestive fluid that has a pH of 1-2 composed of hydrochloric acid, potassiu m and sodium. 4. What systemic (body-wide) condition can occur as a result of too much stomach acid production (usually occurs due to excessive vomiting)?Explain why this happens. Helicobacter pylori or (H. pylori infection), patient with this condition may develop peptic ulcer if there is imbalance between the amount of acid and the mucus defense barrier lining the stomach thus, the amount of imbalance acid will damage the lining ot the stomach, causing the detense mucus barrier to be disrupted and inflammation to the stomach mucosa leading to acid to be increased and excessive vomiting that caused by lost of potassium, sodium, hydrogen and chloride ions in the stomach acid composition. 5. What is Helicobacter pylori? How is it treated?Is also known as H. pylori infection that is identified in the gastric antrum of patients with active chronic gastritis and peptic ulcers, which is now recognized as the major cause of gastric cancer. It can be treated by omeprazole and antibiotic tr eatment. 6. What pathological conditions can H. pylori cause in humans? Gastric adenocarcinoma, Chronic Gastritis, gastric cancer gastrointestinal cancers and peptic ulcers 7. What did this study assess/evaluate/explore? The study assess that gastrin has a distinct effect on the gastric corpus and antrum n the setting of chronic gastric Helicobacter infection.While gastrin is possibly an essential cofactor for gastric corpus carcinogenesis, gastrin deficiency can predispose animals to antral tumorigenesis, and thus any imbalances in gastrin physiology may represent a risk for gastric transformation 8. What were the authors' conclusions? There are different effect of gastrin on carcinogenesis (normal cells are transformed into cancer cells) of both the gastric corpus and antrum, suggesting that gastrin is an essential cofactor for gastric corpus carcinogenesis