This article was downloaded by: [78.39.229.183] On: 10 March 2013‚ At: 06:52 Publisher: Taylor & Francis Informa Ltd Registered in England and Wales Registered Number: 1072954 Registered office: Mortimer House‚ 37-41 Mortimer Street‚ London W1T 3JH‚ UK Polymer-Plastics Technology and Engineering Publication details‚ including instructions for authors and subscription information: http://www.tandfonline.com/loi/lpte20 Thermal‚ Dynamic Mechanical‚ and Barrier Studies of Potassium Permanganate-LDPE
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species. Their activity has also been tested by broth dilution method using six bacterial species. Minimum Inhibitory Concentration (bactericidal) is 6.25–25.00 mg mL–1. Keywords: diethyldithiocarbamate‚ DTA‚ fungicide‚ IR‚ synthesis‚ TG‚ X-ray diffraction Introduction The plant protection has become necessary in order to increase the food production. Many organometallic compounds may have important biological activities. This work is continuation of our previous research on organometallic compounds
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crystal chemistry of quartz‚ α-FePO4 and β-FePO4. FePO4 is a quartz-type of iron phosphate. It is different from other α-quartz isotypes due to the fact that the A-cation is a transition metal. The low-temperature α-phase can be from 294k neutron powder diffraction to high-temperature β-phase 1073K. As the quartz start to transit at 980K‚ from α-β‚ the Fe-O-P bridging angles start to increase value and the tetrahedral tilt angle decline drastically. Due to the high intensity of thermal heat‚ it will turn
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Quartz-type FePO4 was investigated from 294 up to 1073K by neutron powder diffraction. The cell parameters and fractional atomic coordinates in the α phase tend towards the values found in the β phase. The first order transition of FePO4 is at 980 K‚ during which several observations are made. Firstly‚ the cell parameters and fractional atomic coordinates show discontinuous shifts. Secondly‚ the intensities of a large number of diffraction lines decrease‚ as shown in Fig. 1. Lastly‚ bond distances and
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handling‚ production and utilization of a wide variety of particles‚ in both dry and wet conditions. Recently‚ these issues are being reinvestigated for the nano- and bio-technologies. Particulate Technology The fourth phase in the nature: “powder” or “particulate solids” phase Not solid‚ but can
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Available online at www.sciencedirect.com Chinese Chemical Letters 20 (2009) 889–892 www.elsevier.com/locate/cclet Highly selective CO methanation over amorphous Ni–Ru–B/ZrO2 catalyst Qi Hai Liu‚ Xin Fa Dong *‚ Wei Ming Lin School of Chemistry and Chemical Engineering‚ South China University of Technology‚ Guangzhou 510640‚ China Received 15 December 2008 Abstract Amorphous Ni–Ru–B/ZrO2 catalyst was prepared by the means of chemical reduction‚ and selective CO methanation as a strategy
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INTRODUCTION 1.1. Nickel Nickel is a chemical element with atomic number 28. It is denoted by the symbol ‘Ni’ and is one of the main constituent of meteorites. It was discovered in 1751‚ by Axel Fredrik in Sweden. It belongs to the transition metal group and is known for its hardness and ductility. Significant chemical reactivity is exhibited by pure Nickel. Nickel in its pure or low-alloy form is used in several fields as it is highly resistant to various reducing chemicals. Nickel when annealed
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The natural plant exudate gum tragacanth is obtained from the stem of the bush like plant “goat’s-horn”‚ Astragalus species. Gum tragacanth has been used commercially for well over 2000 years and is currently widely used as a thickener and emulsifier in emulsion systems in different pharmaceutical‚ food‚ cosmetic and diverse industrial uses. In addition‚ it is on the list of stabilizers that are permitted by Food and Agriculture Organization/ World Health Organization that could be used during the
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Composition CI 77266 (and) water (and) glycerin (and) PVP Preservation system Phenoxyethanol (and) dehydroacetic acid Main benefits Nanoparticle-free* Paraben-free PEG-free / PEO-free * No particle below 100 nm according to method 10-039 using a laser diffraction particle size analyzer HORIBA LA950-V2 (liquid process). Confidential 2 Covarine Black WS 9199 Cosmetic benefits Ready-to-use dispersion Excellent stability High compatibility in formulations Outstanding coloring performances in hair shading
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because electrons have wavelengths about 100‚000 times shorter than visible light photons. They can achieve better than 50 pm resolution and magnifications of up to about 10‚000‚000x whereas ordinary‚ non-confocal light microscopes are limited by diffraction to about 200 nm resolution and useful magnifications below 2000x. The electron microscope uses electrostatic and electromagnetic lenses to control the electron beam and focus it to form an image. These electron optical lenses are analogous to the
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