only carbon and energy source in a saline environment. Besides‚ we demonstrated for the first time the 4-HBA and BA degradation ability of H. sp. KHS3. Several Halomonas strains have been described as efficient aromatic compounds degraders (Alva and Peyton‚ 2003; García et al. 2004; García et al.‚ 2005; Oie et al.‚ 2007; Dastgheib et al.‚ 2012; Piubeli et al.‚ 2012a‚ 2012b). For example‚ H. organivorans is characterized by its ability to use a wide range of organic compounds as the only carbon source
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HISTORY OF CUTTING TOOL MATERIALS • Cutting tool used during the industrial revolution in 1800 A.D • First cutting tool was cast using crucible method (1740) and slight hardened by H.T. • 1868: R. Mushet found by adding Tungsten we can increase hardness and tool life ( Air Quenching) • F.W.Taylor in Pennsylvania did the most basic research in metal cutting between 1880-1905 • Invented high speed steel (better H.T. process) • Better alloy
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on this relatively revolutionizing and satisfying solution of energy storage through Paper Batteries and provides an in-depth analysis of the same. A paper battery is a flexible‚ ultra-thin energy storage and production device formed by combining carbon nanotubes with a conventional sheet of cellulose-based paper. A paper battery can function both as a high-energy battery and super capacitor ‚ combining two discrete components that are separate in traditional electronics . This combination allows
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which are the O- and N- of sodium saccharin are not solvated therefore are “naked” and the reaction is not inhibited and preceded in an accelerated rate. The reaction was an SN2 reaction. Since the Oxygen and Nitrogen are more electronegative than the carbon on which they’re attached electrons are pulled towards O- and N- attracting the ethane from Iodoethane. Iodine being more electronegative breaks off from ethane and joins the Na+. Since‚ the Oxygen of sodium saccharin is more electronegative than
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of The Elements By Derrick Deacon - There are 92 naturally occurring elements‚ only 17 of them make up 99.5% of the earth’s crust (including oceans and atmosphere). - In living things (plants‚ animals‚ people) the six most abundant elements are carbon‚ hydrogen‚ oxygen‚ nitrogen‚ phosphorus and sulfur. - The universe is dominated by the elements hydrogen (83%) and helium (16%) 1. The Crust The outside of the earth is a thin crust which is approximately 20 to 40km thick. The crust is a formation
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Another friend of Libra Dexter Patrick S. Baltazar Pre-test: Chemical balancing Instruction: Balance each chemical equation by adding a correct coefficient to it. Question 1 __ SnO2 + __ H2 → __ Sn + __ H2O Question 2 __ KOH + __ H3PO4 → __ K3PO4 + __ H2O Question 3 __ KNO3 + __ H2CO3 → __ K2CO3 + __ HNO3 Question 4 __ Na3PO4 + __ HCl → __ NaCl + __ H3PO4 Question 5 __ TiCl4 + __ H2O → __ TiO2 + __ HCl Question 6 __ C2H6O + __ O2 → __ CO2 + __ H2O Question 7 __ Fe + __ HC2H3O2 → __ Fe(C2H3O2)3 +
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Are Aromatic Hydrocarbons Carcinogenic Aromatic hydrocarbons or arenes are hydrocarbons characterized by alternating double and single bonds between carbons. Benzene is the most common aromatic hydrocarbon‚ but there are some non-benzene based compounds called heteroarenes‚ where a carbon is replaced by an oxygen‚ nitrogen‚ or sulfur‚ that are also aromatic compounds. Aromatic hydrocarbons exist in our daily lives regardless if we recognize them or not. Aromatic hydrocarbons are ingested or
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Holiday Gifts for Good -Silicon Valley Parents Develop GigatonGifts Website 1888 Press Release - GigatonGifts was launched in December by a group of Silicon Valley parents concerned about deforestation. Volunteer parents developed the GigatonGifts website (www.GigatonGifts.org)‚ where people can purchase trees and solar stoves in Africa and Haiti as gifts. San Francisco‚ CA - GigatonGifts was launched in December of 2013 by a group of Silicon Valley parents concerned about the planet
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air pollution was the burning of fossil fuels by the many manufacturing industries producing iron and steel‚ automobiles‚ machinery‚ textiles and food. Coal and Oil were the main sources of fuel for the factories which resulted in the release of carbon dioxide‚ sulphur dioxide‚ smoke‚ soot and other particulates. Inefficient machinery and obsolete techniques coupled with the improper monitoring worsened the air pollution. the severe air pollution was causing acid rain‚ smog and health problems.
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special case of conjugation that leads to an especially stable bonding arrangement. The benzene ring consists of six sp2 hybridized carbon atoms in a regular hexagon. Each carbon forms two σ-bonds with adjacent carbons‚ and a third σ-bond with a hydrogen atom. The 2p orbital on each atom is available for π-bonding. Interaction between the p orbitals on the six carbon atoms forms a conjugated system of π-electrons. Molecules with this bonding arrangement are called aromatic molecules. For convenience
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