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Online since: January 2013
Authors: Margareta K. Linnarsson, Peter J. Wellmann, Michl Kaiser, Saskia Schimmel, Thomas Hupfer, Mikael Syväjärvi, Yi Yu Ou, Valdas Jokubavicius, Hai Yan Ou
Linnarsson4,h and Peter Wellmann1,i 1Department of Materials Science 6, University of Erlangen-Nuremberg, Martensstr. 7, 91058 Erlangen 2Department of Physics, Chemistry and Biology, Linköping University, SE-58183, Linköping, Sweden 3Department of Photonics Engineering, Technical University of Denmark, Denmark 4Integrated Devices and Circuits, KTH Royal Institute of Technology, Electrum 229, SE-164 40, Kista, Sweden amichl.kaiser@ww.uni-erlangen.de, bHupfer.Thomas@gmx.net, cvaljo@ifm.liu.se, dsaskiaschimmel@gmx.de, emikael.syvajarvi@ifm.liu.se, fyiyo@fotonik.dtu.dk, ghaou@fotonik.dtu.dk, hmarga@kth.se, ipeter.wellmann@ww.uni-erlangen.de Keywords: Silicon Carbide, Orientation, PVT, Polycrystalline, Doping Abstract.
In a warm white light emitting diode (LED) structure, the N and B doped fluorescent SiC (f-SiC) may be used as a near ultraviolet (NUV) light into a yellowish white light converter [1,4].
Online since: May 2014
Authors: Hong Liang Zhang, Chang Jin Tang, Fei Gao, Lin Dong
Synthesis and Catalytic Activity of Fe-MCM-41 Nanoparticles Hongliang Zhang*1,2,a, Changjin Tang2,b, Fei Gao*3,c, Lin Dong*2,d 1Analysis and Testing Central Facility, Anhui University of Technology, Maanshan 243002 2School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210093 3Center of Modern Analysis, Nanjing University, Nanjing 210093 azhanghl_ahut@163.com, btangcj@nju.edu.cn, cgaofei@nju.edu.cn, ddonglin@nju.edu.cn Keywords: Fe-MCM-41, Nanoparticle, Phenol hydroxylation, Binary surfactants Abstract.
Results and discussions Structure of samples.
Online since: December 2012
Authors: Dong Zhou Wang
The core connotation of Healthy city is people-oriented, to protect the health of urban residents living and health, so the city can be continued to promote the development of human society of the organism as a whole, the organism from the city healthy crowd, healthy environment and the health of the social structure.
Urban soils as pollutants inks-a case study form Aberdeen, Scotland[J].Applied Geo-chemistry, 1996, 11: 129-131
Online since: January 2013
Authors: Yu Shu Zhang, Ya Chuan Liu, Yao Hui Yang, Chao Chen
Excepting for increasing mineral magnetism, magnetic roasting also has the following effects: (1) to remove the crystal water and gas in the minerals; (2) to loose the ore structure to reduce the grinding power consumption; (3) to remove the harmful elements such as sulfur and arsenic from the ore [1].
Table 1 Results of ore chemistry analysis (%) Elements TFe FeO Fe2O3 P S SiO2 Al2O3 Content 44.56 2.63 60.69 1.02 0.041 13.22 6.58 Elements CaO MgO K2O Na2O MnO C TFe/FeO Content 5.42 0.94 0.43 0.082 0.25 2.39 16.94 Table 2 Results of ore iron phase analysis Composition Magnetic iron * Siderite Iron oxide * Iron pyrite Iron silicate Total Content(%) 0.016 0.67 43.29 0.2 0.13 44.306 Distribution(%) 0.04 1.51 97.71 0.45 0.29 100 Magnetic iron: magnetite, pyrrhotite; iron oxide: hematite, limonite Table 1 and Table 2 shows that iron minerals mainly contain hematite and limonite with low sulfur and high phosphorus.
Online since: April 2014
Authors: Shuai Wang, Jing Zhang, Xiu Hua Fu, Yang Kou, Dong Mei Liu
Introduction The yellow laser is widely used in the fields of biomedicine, chemistry, laser display and identification of space object, the optics of yellow laser has been developed rapidly in recent years.[1] Due to the wide applications of yellow laser in domestic and foreign counterparts, meanwhile the Nd: YVO4 (neodymium-doped yttrium vanadate) is an excellent laser host crystal.
At film design aspect, according to the film design theory, we use the TFCalc film system software for film design, and through Global Search and Needle methods to improve the layer structure.
Online since: June 2014
Authors: José Otávio Peroba Nascimento Santos, José Jailson Nicácio Alves, Bianca Viana de Sousa, Romualdo Rodrigues Menezes, Carlos Eduardo Pereira
The chemistry composition of metakaolin samples showed that is formed by silica and alumina through the following ratio (51.6% de SiO2 e 47.3% de Al2O3).
The relation between the type of precursor material and the alkaline solution has allowed a higher polymerization of the structure.
Online since: October 2013
Authors: Hai Xin Ding, Si Liu, Qi Sun, Shan Shan Gong
One-Pot Synthesis of P1,P2-Diaciclovir-5¢-Diphosphate from Aciclovir 5¢-H-Phosphonate Haixin Dinga, Si Liub, Shanshan Gong c,*, Qi Sund Jiangxi Key Laboratory of Organic Chemistry, Jiangxi Science and Technology Normal University 605 Fenglin Avenue, Nanchang, Jiangxi 330013, PR China aemail: dinghaixin_2010@163.com, bemail: liusi22@126.com, cemail: gongshanshan33@gmail.com, d email: sunqi96@tsinghua.org.cn Keywords: Antiviral nucleoside; Dinucleoside diphosphate; Phosphoramidate; H-Phosphonate; Prodrug Abstract.
In its structure, the ribose is replaced by an open-chain.
Online since: July 2015
Authors: Poedji Loekitowati Hariani, Fahma Riyanti, Fatma Fatma, Siska Sutrini
Synthesis of CuFe2O4-Bentonite Composite for Adsorption of Ni(II) from Electroplating Wastewater Poedji Loekitowati Hariania, Fahma Riyanti, Fatma and Siska Sutrini Department of Chemistry, Faculty Mathematics and Natural Sciences, Sriwijaya University Jalan Palembang-Prabumulih Km 32 Indralaya, Ogan Ilir, Sumatera Selatan, Indonesia apujilukitowati@yahoo.com Keywords: bentonite, CuFe2O4, composite, Ni(II), electroplating wastewater Abstract.
Bentonite is one of the adsorbents can be used to absorb heavy metals because has ability to exchange ion at typical layered silicates structure [7].
Online since: January 2016
Authors: Kyaw Thu, Kim Choon Ng, Ang Li, Karan M. Sabnani
When binder is used to stick the silica gel solids together, it is inevitable that the binder blocks the porous structures on the silica gel surface.
Siemieniewska, "Reporting physisorption data for gas/solid systems with special reference to the determination of surface area and porosity," Pure and Applied Chemistry, vol. 57, pp. 603-619, 1985
Online since: May 2013
Authors: Mont Kumpugdee-Vollrath, Mario Helmis
Polymer mixtures as colon targeted drug delivery systems Mario Helmis1,a, Mont Kumpugdee-Vollrath1,b 1Beuth Hochschule für Technik Berlin - University of Applied Sciences, Faculty of Mathematics-Physics-Chemistry, Pharmaceutical and Chemical Engineering, Luxemburger Str. 10, D-13353 Berlin, Germany amhelmis@beuth-hochschule.de, bvollrath@beuth-hochschule.de Keywords: controlled release, colon delivery, Kollicoat, Eudragit, fluidized bed, coating, SEM, 3Dmicroscopy, resveratrol Abstract.
SEM and 3Dmeasurement provide information about the surface structure and additionally confirms the correlation between coating thickness and hardness of the coated core tablets (Fig. 1).