Polonium Facts - Elements Are Interesting

Polonium is a rare radioactive semi-metal or metalloid. The toxic element is believed to have caused the death of former intelligence agent, Alexander Litvinenko, in November 2006. Polonium is a radioactive element that occurs naturally in the environment at very low levels or can be produced in a nuclear reactor. PhysicalProperties of Polonium Polonium-210 emits alpha particles, which can damage or destroy genetic material inside of cells. Isotopes that emit alpha particles are toxic if they are ingested or inhaled because the alpha particles are very reactive, but polonium isnt absorbed through the skin, nor does the alpha radiation penetrate deeply. Polonium generally is considered toxic only if taken internally (breathing, eating, through an open wound). Marie and Pierre Curie discovered polonium in 1897.  Marie Curie  named polonium for her homeland, Poland. Polonium dissolves readily in dilute acids. Po-210 readily becomes airborne and is soluble enough to circulate through body tissues.  Polonium is the only component of cigarette smoke to produce cancer in laboratory animals. The polonium in tobacco is absorbed from phosphate fertilizers. A lethal amount of ingested polonium is 0.03 microcuries, which is a particle weighing 6.8 x 10-12 g (very small). Pure polonium is a silvery-colored solid. Mixed or alloyed with beryllium, polonium can be used as a portable neutron source. Polonium is used as a neutron trigger for nuclear weapons, in making photographic plates, and to reduce static charges in industrial applications such as textile mills.

The Field Of American Studies - 1758 Words

In this essay, I will examine the field of American Studies and attempt to explain its ever changing definition. I will take the reader through the origins of American Studies and describe the events that led to changes in the discipline. The scholars in American Studies are constantly seeking to understand the practices by individuals and groups and their history of origin. Scholars struggle to understand how values and beliefs shape social and political realities within the U.S. and other countries. American Studies is an interdisciplinary study that explores cultures of the United States as well as their transnational exchanges and impact. In the words of Staurt Hall, he â€Å"finds in American culture and in America’s capacity to live with difference the best illustration of a continuous dialect between the local and the global, between the insular and the transnational. He defines culture as an embodiment of the best that has been thought and said in a society. It is the sum of the great ideas as represented in the classic works of painting, music, and philosophy that represent culture. (Hall, 9)† Hall also has observed U.S. dominance in communication and described America as the common factor of globalization. The field of American Studies began in what may be called a single beginning with multiple origins. The beginning of the American Studies Association in late 1951 and early 1952 and the beginning of the journal, American Quarterly at the University of Minnesota inShow MoreRelatedEssay on Development of African American Studies1148 Words   |  5 PagesDevelopment of African American Studies Scholars have dedicated their time and attention to furthering the discipline of African American Studies and can define the field with many different definitions. Through looking at the origins and development in the study we can see how it became a legitimate academic field. 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Black studies can be about blacks learning the necessary skills to be constructive members of society, such as financing, business, computer studies, labor laws and the judiciary systems. There are all field that can help the programs once students have mastered them. Having students doing financing can helpRead MoreHow Have New Emphases And Interpretative Lenses Is History1269 Words   |  6 Pagestraditional methodologies of study to incorporating social and cultural historiography to better analyze their subject matter; while turning from an inner study, as it applies to the United States, towards a more world view. The authors of this week’s reading project’s a theme or commonality that has affected their subfield from the turn of the century until now. 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Prior to her arrival in American Samoa, Mead with the guidance of her mentor Franz Boas, decided to investigate the lives of adolescent girls in Samoa as a focal point of her research. Mead chose this subject matter due to her speculation that the period adolescence within the United States during the 1920s was filled with stress and a period of turbulence; therefore, Mead hypothesized that stress felt by American youth

Police Enforcement And Police Officers - 1438 Words

It is widely known that police officers are given a substantial amount of latitude concerning vehicular searches while on patrol. Many officers make it a habit to ask citizens they pull over if it s okay to search their cars, while others will only ask if they have reason to believe that a suspect is hiding something. Either way, what should you do if the police search your car without your permission, and without first obtaining a search warrant? Most people know that police officers need one of three things to search your car: permission, probable cause or a warrant. Unfortunately, an officer will obtain one of those three things if he is determined to execute a search, even if there is a possibility that it will later be thrown out in court. If permission is denied and they don t have sufficient evidence for a warrant, just about anything can be used for probable cause. For example, let s say that you re pulled over for speeding, and when the police officer takes your license an d registration, he notices that your eyes are red. This is a common side effect of marijuana use (and about a thousand other things), but he might decide that he wants to search your car, so he asks permission. If you don t give it, but there is a large jacket tossed over the passenger seat of the car, he can use that jacket and your red eyes to generate probable cause. After all, you might be concealing an ounce of marijuana underneath the jacket, and he would have to search your car if heShow MoreRelatedPolice Officers And Police Enforcement Officers Essay1450 Words   |  6 Pages Law enforcement officers are authorized to use different forces based on its situation. Officers face many circumstances during the period of their job when use of force is necessary. For example, making arrests, restraining unruled combatants, and while controlling disruptive situations. Incidents involving the use of excessive force by the police frequently receive media attentions, legislators and sometimes even criminal courts. To serve better for a community or country a small percentageRead MorePolice Officers And The Police Enforcement939 Words   |  4 PagesThe psychologist serves a great purpose in the law enforcement as well. The police psychologists provide services that are used to counter police use of excessive force. The psychologists are there to characterize the types of officers who are known to abuse force and to recommend psychology-based intervention that could help police managers reduce cases of excessive force. 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Ethan Essay Example For Students

Ethan Essay In the novel, Ethan Frome by Edith Wharton, Ethanes life, althoughdifficult, was full of discontent because of his choices. Ethans poor choices havemade him a miserable man with little to look forward to and only agony to look backon. Three topics that display this discontent for life and the poor choices that Ethanmade are that Ethans experiences personal misfortune that hurt his chance forhappiness, Ethan made choices too quickly and gave them little or no thought, andZeenas hypocondriact nature was a huge weight on the soul of Ethan Frome. Ethan experiences personal misfortunes that hurt his chances for happiness. Ethan Fromes troubles began he made poor choices in his life. When Ethan wasattending his college classes his father had become deathly ill and soon after theillness had struck, he died. As a result of his fathers death, Ethans mother was leftall alone and so was his fathers saw mill. Ethan had no choice but to leave collegeand stop his classes so that he could go home and take care of his poor mother. Ethanwent home like any respectable young man would do those days, As Marline Springer writes ?Ethan Frome gives up scholarly ambitions to help animprovised motherly figures.? This move started a domino affect of bad choices and bad karma falling towardshim. Ethan made decisions too quickly and gave them little or no thought Some of the decisions that Ethan made were not well planned and were blinded byquick thinking and natural human instinct. When Ethan got back from college, tohis distress, his mother was stricken with a deadly disease. Now poor Ethan haddouble the work on his hands, taking care of the saw mill and his mother. So hiscousin, Zeena, came to take care of his ill mother. Ethan saw how well Zeena hadtaken care of his mother, which gave him the idea that because she took care of hismother so well that maybe she would care for him as well as she cared for hismother. Ethan also thought that being alone during the hard cold winter wasunbearable, which made him turn towards the decision of asking Zeena to marryhim. After his mother had died he had also felt he owed Zeena for all her hard work,so he did the only thing he could afford and married her; this would turn out to beone of the worst decisions Ethan would ever make. Zeen as hypochondriac nature was a huge weight on the soul of EthanFrome. Zeena became ?ill? from nursing Ethans mother, so Ethan thought it agood idea to bring Mattie Silver to his household to help nurse Zeena back to health. As the narrator states ?when she entered the household as Zeenas cousin her aid it wasthought best.? Ethan Frome then foolishly fell in love with Mattie, which complicated matterseven further. Ethan would then have to make many choices about advancing his andMatties relationship or staying faithful to Zeena. Ethan was about to commit suicide with Mattie so that Zeena would not be inthe way, but instead supposedly made the decision to stay with Zeena by veeringaway from the tree at the last second leaving Mattie crippled and him with a warpedleft side. In this novel there were many choices that were made by Ethan Frome, mostof which were poor and not well thought out in consequence these decisions broughthim anguish and pain, and one short leg. .u4b2c28d5b1c0705c4cd7623959971f92 , .u4b2c28d5b1c0705c4cd7623959971f92 .postImageUrl , .u4b2c28d5b1c0705c4cd7623959971f92 .centered-text-area { min-height: 80px; position: relative; } .u4b2c28d5b1c0705c4cd7623959971f92 , .u4b2c28d5b1c0705c4cd7623959971f92:hover , .u4b2c28d5b1c0705c4cd7623959971f92:visited , .u4b2c28d5b1c0705c4cd7623959971f92:active { border:0!important; } .u4b2c28d5b1c0705c4cd7623959971f92 .clearfix:after { content: ""; display: table; clear: both; } .u4b2c28d5b1c0705c4cd7623959971f92 { display: block; transition: background-color 250ms; webkit-transition: background-color 250ms; width: 100%; opacity: 1; transition: opacity 250ms; webkit-transition: opacity 250ms; background-color: #95A5A6; } .u4b2c28d5b1c0705c4cd7623959971f92:active , .u4b2c28d5b1c0705c4cd7623959971f92:hover { opacity: 1; transition: opacity 250ms; webkit-transition: opacity 250ms; background-color: #2C3E50; } .u4b2c28d5b1c0705c4cd7623959971f92 .centered-text-area { width: 100%; position: relative ; } .u4b2c28d5b1c0705c4cd7623959971f92 .ctaText { border-bottom: 0 solid #fff; color: #2980B9; font-size: 16px; font-weight: bold; margin: 0; padding: 0; text-decoration: underline; } .u4b2c28d5b1c0705c4cd7623959971f92 .postTitle { color: #FFFFFF; font-size: 16px; font-weight: 600; margin: 0; padding: 0; width: 100%; } .u4b2c28d5b1c0705c4cd7623959971f92 .ctaButton { background-color: #7F8C8D!important; color: #2980B9; border: none; border-radius: 3px; box-shadow: none; font-size: 14px; font-weight: bold; line-height: 26px; moz-border-radius: 3px; text-align: center; text-decoration: none; text-shadow: none; width: 80px; min-height: 80px; background: url(https://artscolumbia.org/wp-content/plugins/intelly-related-posts/assets/images/simple-arrow.png)no-repeat; position: absolute; right: 0; top: 0; } .u4b2c28d5b1c0705c4cd7623959971f92:hover .ctaButton { background-color: #34495E!important; } .u4b2c28d5b1c0705c4cd7623959971f92 .centered-text { display: table; height: 80px; padding-left : 18px; top: 0; } .u4b2c28d5b1c0705c4cd7623959971f92 .u4b2c28d5b1c0705c4cd7623959971f92-content { display: table-cell; margin: 0; padding: 0; padding-right: 108px; position: relative; vertical-align: middle; width: 100%; } .u4b2c28d5b1c0705c4cd7623959971f92:after { content: ""; display: block; clear: both; } READ: SHOCK INCARCERATION EssayBook Reports