Barium is a soft, heavy, silver-colored metal element. This element does not have very many uses outside of the laboratory, but it combines easily with other chemicals to form compounds used for important industrial uses. For example, Barium carbonate is used in the manufacture of ceramics and special glass, and also to purify certain chemical solutions. It is also an ingredient in clay slurries, also known as water muds, used in drilling oil wells. Barium titanate is used in sonar detectors and other electrical equipment. At low doses, barium acts as a muscle stimulant and at higher doses affects the nervous system eventually leading to paralysis. Acute and subchronic oral doses of barium cause vomiting and diarrhea, followed by decreased heart rate and elevated blood pressure. Higher doses result in cardiac irregularities, weakness, tremors, anxiety, and dyspnea. A drop in serum potassium may account for some of the symptoms. Death can occur from cardiac and respiratory failure. Acute doses around 0.8 grams can be fatal to humans. Barium nitrate makes signal flares burn with a green flame. Barium ferrite is used to make magnets. Barium sulfate is an extremely insoluble barium compound that is not poisonous. Doctors use it in X-ray examinations of a patient's digestive system. The barium sulfate absorbs X rays to show an outline of the intestines on the developed film. A barium enema is performed to examine the walls of the colon. During the procedure, a well lubricated enema tube is inserted gently into the rectum. The barium is then allowed to flow into the colon. The flow of the barium is monitored by the health care provider on an X-ray fluoroscope screen. The test is used to detect colon cancer. The barium enema may also be used to diagnose and evaluate the extent of inflammatory bowel diseases. Barium sulfate and zinc sulfide form lithopone, a white coloring matter for paint. Barium is never found in a pure state because it combines so easily with other elements. Pure barium is obtained by passing an electric current through a fused barium compound, such as barium chloride. A piece of barium metal quickly reacts with oxygen and water vapor in the air to form barium oxide. It must be stored under kerosene to keep it pure. Barium is found most often as barium sulfate in the mineral barite. The chemical symbol for barium is Ba.
He later left Gallipoli for good during the night of the 17th of december which was only 2 nights before the final evacuation of the Anzacs.
In chapter 8 titled "Radium (Ra)" of The Poisoner's Handbook by Deborah Blum, the most interesting story developed within this chapter was the death of dial workers at Orange, New Jersey after been exposed to radium every day. It was interesting due to the fact that radium was used everywhere in the community and was never thought it could harm anyone. Radium was a super element that was used everywhere, but its continuous use unmasked its fatal habits. As it was stated in the text, "Radiant health, the ads proclaimed-beautiful skin, endless vigor, and eternal health—ingesting radium seemed the next best thing to drinking sunlight." (Blum 179). People were accepting radium as a natural gold element but they haven't realized constant contact
The Things They Carried describes real objects American soldiers carried during the war. They carried an M-60, a .45-caliber pistol, an assault rifle, ammunition, compass, maps, code books, the PRC-25 radio, sandbags, tanning lotion, toilet paper, tranquilizers, rabbit’s foot, Purple Hearts, diseases, the wounded, the weak, and the land itself. Many soldiers experienced horrific events in Vietnam. War affects the mind. O’Brien said, “We all got problems.” (O’Brien 18). O’Brien relates one example of the war’s negative effect when a soldier shoots a baby water buffalo. He not only wants to kill the animal, but to make it suffer. Silence disturbs soldiers. Many times soldiers think they hear something which results in a bad decision. O’Brien describes a group on night watch who hear noises, go crazy...
Molybdenum is a transition metal. It is represented by the symbol Mo. It is a pure metal that is is silverish white in color and very hard, and has one of the highest melting points of all pure elements at 4753 °F. Its boiling point is 8382 °F. Its density is 10280 kg/m3 and its hardness is 5.5.
“War is nasty; war is fun. War is thrilling; war is drudgery. War makes you a man; war makes you dead,” (80). In the fiction novel The Things They Carried, the author Tim O’Brien reminisces fighting in the Vietnam War and the aftermath of the war with his platoon mates through short stories and memories. He goes in depth about the emotional trauma and physical battles they face, what they carry, and how Vietnam and war has changed them forever. O’Brien’s stories describe the harsh nature of the Vietnam War, and how it causes soldiers to lose their innocence, to become guilt-ridden and regretful, and to transform into a paranoid shell of who they were before the war.
“The Vietnam War was arguably the most traumatic experience for the United States in the twentieth century. That is indeed a grim distinction in a span that included two world wars, the assassinations of two presidents and the resignation of another, the Great Depression, the Cold War, racial unrest, and the drug and crime waves.” (Goldstein 1). The Vietnam War is widely regarded as one of the most traumatic experiences in all of American History. Innocent boys trudged through the mud, the heat and the fear that came along with fighting in Vietnam. Tim O’Brien paints a picture of how difficult and traumatic Vietnam was for the soldiers who experienced it in his book, The Things They Carried. Throughout the course of the book the elements of fiction: plot, character and setting all act to serve the purpose in conveying O’Brien’s theme of his work which is revealed to be at the conclusion: a message of universal immortality. In Tim O’Brien’s The Things They Carried setting is the most crucial element in understanding theme, followed by character then lastly plot.
He also challenged the typical gender roles by creating a relationship between the two that was quite a close friendship but entirely platonic and void of physical action. One could see the irony in Jake’s inspiring manly men with his male dominant agenda because if one were to take a step back and focus in on the real Jake they would notice how vulnerable and emotion driven he truly was. They would see a man who did not portray the gender role assigned to him by society. Then if one were to look at Brett they would not see a woman who decided to conform to the norms of society, either. Instead they would see a woman who knew what she wanted, took what she wanted, and didn’t care what others thought of her. When Hemingway creates these two characters he creates entirely new archetypes that will be used in works of literature from there on out. Archetypes where the male definition can indeed include vulnerability, although, it does not release the male characters from their most stereotypical gender roles as protector and provider. In other words, Hemingway redefines manhood to include more feminine attributes, but he does not release men from the chains of their past roles so that in essence the new man has even more expectations set upon him. The archetype that he creates is not only responsible for
Many of the characters in Fitzgerald’s novel are portrayed as shallow and materialistic, which accurately reflects the mindset of the 1920’s. However, because Fitzgerald chooses to reveal these characters so thoroughly and frequently suggests his intentions of critic...
Lithium Though the drug lithium is used for a number of disorders ranging from acute depression to eating and personality disorders (Paykel, 1992), it's primary use is for bipolar disorder, also known as manic depression. Patients with bipolar disorder "between two poles: depression and its opposite, mania" (Kalat,2004), often with periods of normal behavior in between (Jamison,1993). In addition, the patient is also prone to "mixed episodes" in which symptoms of both mania and depression are present. Intensity of these episodes can range from mild to dangerous, as in the case of a manic depressive mother who severed the arms of her 10 month old daughter (Associated Press, 2005).
The 1920’s were a time of social and technological change. After World War II, the Victorian values were disregarded, there was an increase in alcohol consumption, and the Modernist Era was brought about. The Great Gatsby, written by F. Scott Fitzgerald, is a perfect presentation of the decaying morals of the Roaring Twenties. Fitzgerald uses the characters in the novel--specifically the Buchanans, Jordan Baker, and Gatsby’s partygoers--to represent the theme of the moral decay of society.
In this paper I will be discussing the two most prevalent models of health. These two models of health are not, of course, total opposites. Similar to terms such as gay and straight they are two definitive labels placed upon a broad spectrum that is hardly definitive. There exists in this case as well a large clouded middle between the two limiting labels. These are collections of thoughts about how to go about continuing life. These two paradigms in modern healthcare I hope will one-day come to know one another. For now let us say that in generally speaking there are two different approaches or models of medicine and they are allopathic and holistic. Allopathic is another term for our modern western medicine, which in the United States is the dominant one and the one most familiar to the masses. The other, the holistic model, also known as alternative, is commonly associated with older ideas that originated in the East.
The depressing tragedy known as Babbitt, by Lewis Sinclair, accurately portrays the convention of life in the 1920’s. Sinclair precisely evokes the conformity and orthodox life styles that shaped a growing culture. Man, in the 1920’s, is caught in a lifestyle where he is continually fed on what to think. Lewis cunningly explains the constraints of convention that plagued George Babbitt, and mocks society as a whole for its lack of liberal views. Babbitt throughout the novel seems to be trapped in a maze, and is told by “the machine” when to turn. Only when Babbitt revolts against conservative America does his life change, but the question is was it for the better?
Jake seems to be the “mature, stabilizing friend to all,” but his own life is in a mess. Hemingway shared the same characteristics. When he was rejected from the army because of his bad eyesight, he still wanted some adventure in his life. So he decided to be an ambulance driver for the Red Cross. After he was wounded, he helped another injured man find his way to a trench and out of harm. He put other people’s problems ahead of his own, just as his character, Jake, does. Jake symbolizes the steers being put into the ring to calm the bulls. He is put into the rowdy group to help them maintain some order. His true emotions do not show through much. This is one of Jake’s flaws, along with his impotence. As Hemingway was wounded in war, he portrays this in Jake’s character.
The electrons then emit a photon of light. The light for the corresponding wavelength is determined by specific energy level of the certain element, resulting in different colors to appear. Due to sodium’s photons, a yellow and orange light is projected. For the chloride anion tests, the silver salts found in the unknown compound were insoluble, because a mixture between sulfate and silver is insoluble according to the solubility rules; therefore, when mixed with nitric acid and with silver nitrate, a precipitate was formed. The anion would only be chloride if the other four tests proved to be negative. The sulfate anion test also proved positive, as a white precipitant was formed when the unknown substance was mixed with barium chloride and hydrogen chloride; the mixture between barium and sulfate is also insoluble according to the solubility rules. For the acetate, nitrate, and carbonate tests, the results came out negative because there was no definite chemical reaction with the