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4.277 Aktuelle Fachpublikationen zum Thema temperature

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Determination of Organophosphorus Pesticide Residues in Vegetables Using Solid Phase Micro-Extraction Coupled with Gas Chromatography-Flame Photometric Detector

04.01.2015 | Author(s): Haizarul Aida Sapahin , Ahmad Makahleh , Bahruddin Saad, Arabian Journal of Chemistry, 2015

Publication date: Available online 31 December 2014 Source:Arabian Journal of Chemistry Author(s): Haizarul Aida Sapahin , Ahmad Makahleh , Bahruddin Saad An adequate and simple analytical method based on solid-phase microextraction (SPME) followed by gas chromatography-flame photometric ...

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Influence of lanthanum distribution on dielectric and ferroelectric properties of BaBi4-xLaxTi4O15 ceramics

04.01.2015 | Author(s): Anita Khokhar , Parveen K. Goyal , O.P. Thakur , A.K. Shukla , K. Sreenivas, Materials Chemistry and Physics, 2015

Publication date: 15 February 2015 Source:Materials Chemistry and Physics, Volume 152 Author(s): Anita Khokhar , Parveen K. Goyal , O.P. Thakur , A.K. Shukla , K. Sreenivas Structural and electrical properties of Lanthanum substituted barium bismuth titanate BaBi4-x La x Ti4O15 ...

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Low‐temperature Sintering and Microwave Dielectric Properties of MgZrNb2O8 Ceramics with BaCu (B2O5) Addition

31.12.2014 | Xin Tang, Hui Yang, Qi‐long Zhang, Jue‐hui Zhou, International Journal of Applied Ceramic Technology, 2014

The effects of BaCu (B2O5) doping on sintering characteristics, phase constitute, and dielectric properties of MgZrNb2O8 ceramics were investigated. Results indicated that a small amount of BaCu (B2O5) can effectively lower the sintering temperature of MgZrNb2O8 ceramics from 1300°C to 1100°C ...

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Hot Fusion: An Efficient Method to Clone Multiple DNA Fragments as Well as Inverted Repeats without Ligase

31.12.2014 | Changlin Fu et al., PLoS ONE, 2014

by Changlin Fu, William P. Donovan, Olga Shikapwashya-Hasser, Xudong Ye, Robert H. Cole Molecular cloning is utilized in nearly every facet of biological and medical research. We have developed a method, termed Hot Fusion, to efficiently clone one or multiple DNA fragments into plasmid vectors ...

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Compression molding and melt‐spinning of the blends of poly(lactic acid) and poly(butylene succinate‐co‐adipate)

30.12.2014 | Weraporn Pivsa‐Art, Sommai Pivsa‐Art, Kazunori Fujii, Keiichiro Nomura, Kiyoaki Ishimoto, Yuji Aso, Hideki Yamane, H ..., Journal of Applied Polymer Science, 2014

ABSTRACT Poly(lactic acid) (PLA) is a biobased polymer made from biomass having high mechanical properties for engineering materials applications. However, PLA has certain limited properties such as its brittleness and low heat distortion temperature. Thus, the aim of this study is to improve ...

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Synthesis of sulfonamides via I2-mediated reaction of sodium sulfinates with amines in aqueous medium at room temperature

30.12.2014 | Gao-Qing Yuan; Xiaojun Pan; Jian Gao; Juan Liu; Junyi Lai; Huanfeng Jiang, Green Chemistry, 2014

An efficient I2-mediated approach to the synthesis of sulfonamides at room temperature using water as the solvent has been developed. This method for the synthesis of sulfonamides is quite convenient and environment friendly. In addition, the purification procedure of the desired products becomes ...

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Insight into the Mechanism of Hydrogenation of Amino Acids to Amino Alcohols Catalyzed by a Heterogeneous MoOx‐Modified Rh Catalyst

29.12.2014 | Masazumi Tamura, Riku Tamura, Yasuyuki Takeda, Yoshinao Nakagawa, Keiichi Tomishige, Chemistry - A European Journal, 2014

Abstract Hydrogenation of amino acids to amino alcohols is a promising utilization of natural amino acids. We found that MoOx‐modified Rh/SiO2 (Rh–MoOx/SiO2) is an efficient heterogeneous catalyst for the reaction at low temperature (323 K) and the addition of a small amount of MoOx ...

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Effects of Temperature and Stress on Microstructural Evolution during Creep Deformation of Ru‐free and Ru‐containing Single Crystal Superalloys

29.12.2014 | Xinguang Wang, Jinlai Liu, Tao Jin, Xiaofeng Sun, Zhuangqi Hu, Jeonghyeon Do, Baiggyu Choi, I. S. Kim, Changyong Jo, Advanced Engineering Materials, 2014

Effects of temperature and stress on microstructural evolution of the two experimental alloys at various conditions have been studied after creep deformation. The topological inversion has been observed under certain conditions, and it is more pronounced at the same temperature but lower stress ...

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Towards Roll‐to‐Roll Deposition of High Quality Moisture Barrier Films on Polymers by Atmospheric Pressure Plasma Assisted Process

28.12.2014 | Sergey A. Starostin, Mariadriana Creatore, Jan B. Bouwstra, Mauritius C. M. van de Sanden, Hindrik W. de Vries, Plasma Processes and Polymers, 2014

An atmospheric pressure dielectric barrier discharge (DBD) was applied for the deposition of silica‐like moisture barrier films on polyethylene 2,6 naphthalate foil. The diffuse plasma was sustained between two cylindrical drum electrodes in N2/O2/Ar gas flow with the addition of tetraethyl ...

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Nonradiative centers in deep‐UV AlGaN‐based quantum wells revealed by two‐wavelength excited photoluminescence

28.12.2014 | N. Kamata, A. Z. M. Touhidul Islam, M. Julkarnain, N. Murakoshi, T. Fukuda, H. Hirayama, physica status solidi (b), 2014

Abstract We have succeeded in detecting nonradiative recombination (NRR) centers in InAlGaN multiple quantum wells (MQWs) for the sterilization wavelength at around 265 nm by our scheme of two‐wavelength excited photoluminescence (PL). Samples studied are InAlGaN multiple quantum well ...

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