Matthew Rose Mr. Schwartz Chemistry 8 March 2011 Ernest Rutherford Ernest Rutherford was one of the most famous physicists of the early 20th century. He won the Nobel Prize in chemistry in 1908 for his work on atomic emissions and his contributions that led to the discovery of atomic fission. Ernest Rutherford was born in Nelson‚ New Zealand on August 30‚ 1871. His father was James Rutherford and his Mother was Martha Thompson. His father was a wheelwright‚ a person who builds and repairs
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Identifying sites of protein synthesis in Chlamydomonas using erythromycin and cyclohexamide as protein synthesis inhibitors. October 16‚ 2009 Introduction: In living cells‚ prokaryotic or eukaryotic‚ the synthesis (construction) of proteins is accomplished by similar machinery. Amino acids‚ ribosomes‚ messenger RNA (mRNA)‚ and transfer RNA (tRNA)‚ are all necessary for the building of functional proteins in a cell. Ribosomes are the site of protein synthesis in a cell‚ and there are two
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Anthropologist who specializes in Forensic Anthropology CHAPTER 2 UNCOVERING THE PAST RADIOCARBON DATING RELIABLE METHOD FOR DATING REMAINS UP TO 50000YRS OLD; Base on principle that all living matter possesses a certain amt of a radioactive form of CARBON RADIOACTIVE CARBON - produced when
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of sulfur is 2 mohs (S). Sulfur has four natural isotopes‚ all of which are stable. They include: sulfur-32‚ sulfur-33‚ sulfur-34‚ and sulfur-36. Sulfur-32 is the most abundant‚ with 94.99% of all atoms having sixteen neutrons. The second most abundant is sulfur-34‚ whose abundance is 4.25%. Sulfur-33 and sulfur-36 are rare to find‚ with natural abundances of 0.75% and 0.01%‚ respectively (RSC). There are at least six known radioactive isotopes of sulfur‚ with the most prominent being sulfur-35
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Lit 2 May 2013 History of Cancer: Radiation There is a broad group of different types of cancers and they all have a wide range of causes. Each cancer is different according to its biology and pathophysiology. Cancer is a very broad topic but chose four topics that show that radiation is the main cause of cancer. Before I can prove radiation is the cause of cancer‚ there needs to be an introduction as to what cancer is and how it spreads
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Chemistry Revision F331 Isotopes - atoms with the same atomic number‚ but different mass numbers 131I - radioactive tracer for thyroid. 99Tc for tumours. Radioisotopes - gamma emitters & short half life - long enough to detect‚ but not long enough for damage. Beta particles emitters are more useful than alpha particle emitters because they penetrate more and so are more easily detected. Also‚ less damaging. The half life is the time taken for half the isotope to decay Mass left = initial
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large buildings to reflect back the heat from the sun. Gold is also used in electroplating the copper components of an electric device in a process known as Gold Electroplating to improve the device’s solderability. In medical practices‚ the radioactive isotope of gold - gold-198 is used in the treatment of cancer while AuNa3O6S4 (Gold sodium thiosulfate) is used to treat arthritis. In photography‚ gold in the form of HAuCl4 (Chloroauric acid) is used to preserve photographs. Table (i): Chemical
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We’ve all heard it for many years now‚ the importance of making sure we drink enough water to keep our bodies healthy. After all‚ the human body is composed of mostly water‚ with adults averaging 55% - 60% water and babies averaging closer to 75%. The human brain is actually made up of close to 70% water (why you feel foggy headed when you are dehydrated)‚ and the lungs are closer to being 90% water. Beyond ensuring you drink plenty of water‚ it’s equally important‚ if not more so‚ to ensure you
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Lesson 08.01: Half-life and Radioactive Decay · Distinguish between nuclear and chemical reactions. · Compare and contrast different types of nuclear decay and the properties of the three types of radiation (alpha‚ beta‚ and gamma) discussed in the lesson. · Be able to predict the isotope or radiation produced by a nuclear decay reaction when the other product is given. · Describe and make predictions regarding half-life‚ including using a graph or set of data to determine the half-life of
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on fission: splitting heavy atoms into lighter components in a controlled fashion. Though fission is safe when all goes well‚ the fuel is radioactive‚ waste disposal can be problematic‚ and as the Fukushima disaster showed there is a high cost to accidents. Nuclear fusion is in principle cleaner and comes from a cheaper‚ more abundant fuel source: an isotope of hydrogen called deuterium can be extracted from water and only helium is produced as waste. From The Matrix to SimCity 2000 to political
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