ISOTOPES History of the term: In the bottom right corner of JJ Thomson’s photographic plate are the separate impact marks for the two isotopes of neon: neon-20 and neon-22. The term isotope was coined in 1913 by Margaret Todd‚ a Scottish physician‚ during a conversation with Frederick Soddy (to whom she was distantly related by marriage).[4] Soddy‚ a chemist at Glasgow University‚ explained that it appeared from his investigations as if each position in the periodic table was occupied by multiple
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Rahimafrooz . Executive summary Rahimafrooz Globatt Limited‚ after one year of establishment has become one of the main focuses of Rahimafrooz group. Still not sufficiently developed to become a true global company but enough potential and performance it has shown
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El Paso‚ Air Quality: Pollution‚ History and Community By‚ Luz Medrano‚ Nylea Martinez. SCI/362 Instructor‚ Yussuf Farran In order to comprehend the definition on air quality one must first uncover the definition of air‚ as air is one of the biggest resources our planet has available we must study the conditions and impact that it has in our environment. Air is a precious resource that most take for granted‚ supplying us with oxygen; which is an essential for our bodies to live‚ without
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Name ( ( Class ( ( Title ( Manufactured Substances in Industry ( |Content |Page | |(A) Sulphuric acid | | |Manufacture of sulphuric acid |1 – 3 | |Properties of sulphuric acid
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Name: JUSAYAN‚ REX ANGELO M. Student Number: 2014-81828 English 10 WFW4 “Biosorption” With rapid urbanization and industrialization‚ disposal of aqueous effluents into the environment has increased. Many of these effluents contain high level of toxic pollutants such heavy metals which are mainly produced by anthropogenic activities such as smelting‚ battery and steel manufacturing‚ mining‚ and metal processing (Verma and Dwivedi‚ 2013). The pollution caused by the release of these heavy metals into
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Selenium‚ found in group 16 of the periodic table‚ follows a cycle in the environment as it transfers between the biosphere‚ atmosphere and hydrosphere. It is also an essential element for humans and animals. It can cause both deficiencies and toxic effects if not taken in the correct quantities. This essay outlines the general features and behaviour of Se in the primary environment‚ its general abundance and its ability to substitute into minerals. Its Eh and pH also are important factors in determining
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Climate Change Climate change is defined as a change in climate that persists over a sustained period of time. The World Meteorological Organization defines this time period as 30 years. The Intergovernmental Panel on Climate Change (IPCC) in 2003 stated that “there is new and stronger evidence that most of the warming observed over the last 50 years is attributable to human activities”. These changes have led to the emergence of large-scale environmental hazards to human health‚ such as extreme
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SUBJECT: International Marketing TOPIC: Take home Assignment “Schott- Ceran” CLASS: IM-08 group B NAME: Mohammed Mohammed Salah Eldin Abd Elrehim INTAKE NUMBER: DATE: Tuesday 4-9-2012 SCHOTT CERAN® International Marketing Case study Executive Summary: Schott is a major Multinational company laid in Mainz ‚Germany running a heavy portfolio including many different industries such as glass dependant industries such as manufacturing Lens for telescopes ‚pharmaceutical ampoules
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Lithium Magenta to carmine Mg Magnesium Bright white Mn(II) Manganese(II) Yellowish green Mo Molybdenum Yellowish green Na Sodium Intense yellow P Phosphorus Pale bluish green Pb Lead Blue Rb Rubidium Red to purple-red Sb Antimony Pale green Se Selenium Azure blue Sr Strontium Crimson Te Tellurium Pale green Tl Thallium Pure green Zn Zinc Bluish green to whitish green Sources of error for the flame test: The test cannot detect low concentrations of most
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Enzyme Inhibition Many drugs exert their action by inhibition of an enzyme activity in the body. If the activity of an enzyme is vital to the cell or organism‚ then inhibition may lead to death of the cell or organism. It is now possible to design new drugs which are enzyme inhibitors once a target enzyme has been identified. Types of Inhibitors A) Reversible Inhibitors: The effect of the inhibitor is instantaneous‚ and it can be removed from the enzyme by dialysis so that the enzyme activity
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