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2.342 Aktuelle Fachpublikationen zum Thema temperature

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High molecular weight and low dispersity polyacrylonitrile by low temperature RAFT polymerization

28.08.2015 | Jeremy D. Moskowitz, Brooks A. Abel, Charles L. McCormick, Jeffrey S. Wiggins, Journal of Polymer Science Part A: Polymer Chemistry, 2015

ABSTRACT High molecular weight polyacrylonitrile (PAN) with low dispersity has been successfully synthesized utilizing reversible addition‐fragmentation chain transfer (RAFT) polymerization. A comprehensive study was performed to understand the influence of reaction temperature, RAFT agent ...

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ChemInform Abstract: Iron Carbide Nanoparticles Encapsulated in Mesoporous Fe‐N‐Doped Carbon Nanofibers for Efficient Electrocatalysis.

27.08.2015 | Zhen‐Yu Wu, Xing‐Xing Xu, Bi‐Cheng Hu, Hai‐Wei Liang, Yue Lin, Li‐Feng Chen, Shu‐Hong Yu, ChemInform, 2015

Abstract A new catalyst for the oxygen reduction reaction in fuel cells and metal—air batteries is prepared from aqueous solutions of carbonaceous nanofibers, pyrrole, and FeCl3 (room temperature, 4 h, followed by pyrolysis under flowing N2).

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Hydrogen storage in high surface area graphene scaffolds.

26.08.2015 | Alexey Klechikov; Guillaume Mercier; Tiva Sharifi; Igor Baburin; Gottard Seifert; Alexandr Talyzin, Chemical Communication, 2015

Using optimized KOH activation procedure we prepared highly porous graphene scaffold materials with SSA values up to 3400 m2/g and pore volume up to 2.2 cm3/g, which is among the highest for carbon materials. Hydrogen uptake of activated graphene samples was evaluated in a broad temperature ...

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Sea surface temperature control of taxon specific phytoplankton production along an oligotrophic gradient in the Mediterranean Sea

23.08.2015 | Author(s): W.H. van de Poll, P.G. Boute, P.D. Rozema, A.G.J. Buma, G. Kulk, M.J.A. Rijkenberg, Marine Chemistry, 2015

Publication date: Available online 16 August 2015 Source:Marine Chemistry Author(s): W.H. van de Poll, P.G. Boute, P.D. Rozema, A.G.J. Buma, G. Kulk, M.J.A. Rijkenberg The current study aimed to assess changes in phytoplankton composition and productivity along an oligotrophic ...

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Enzymatic characterization and gene identification of aconitate isomerase, an enzyme involved in assimilation of trans‐aconitic acid, from Pseudomonas sp. WU‐0701

21.08.2015 | Kahori Yuhara, Hiromi Yonehara, Takasumi Hattori, Keiichi Kobayashi, Kohtaro Kirimura, FEBS Journal, 2015

Abstract trans‐Aconitic acid is an unsaturated organic acid and detected in some plants such as soybean and wheat, however it remains unclear how trans‐aconitic acid is degraded and/or assimilated by living cells in nature. From soil, we isolated Pseudomonas sp. WU‐0701 assimilating ...

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Flexible Transparent Films Based on Nanocomposite Networks of Polyaniline and Carbon Nanotubes for High‐Performance Gas Sensing

21.08.2015 | Pengbo Wan, Xuemei Wen, Chaozheng Sun, Bevita K. Chandran, Han Zhang, Xiaoming Sun, Xiaodong Chen, Small, 2015

A flexible, transparent, chemical gas sensor is assembled from a transparent conducting film of carbon nanotube (CNT) networks that are coated with hierarchically nanostructured polyaniline (PANI) nanorods. The nanocomposite film is synthesized by in‐situ, chemical oxidative polymerization of ...

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Influence of Temperature, Relative Humidity, and Soil Properties on the Soil–Air Partitioning of Semivolatile Pesticides: Laboratory Measurements and Predictive Models

21.08.2015 | Cleo L. Davie-Martin; Kimberly J. Hageman; Yu-Ping Chin; Valentin Rougé; Yuki Fujita, Environmental Science & Technology, 2015

Soil–air partition coefficient (Ksoil-air) values are often employed to investigate the fate of organic contaminants in soils; however, these values have not been measured for many compounds of interest, including semivolatile current-use pesticides. Moreover, predictive equations for estimating ...

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Structure–Properties Relationships in Thermoplastic Polyurethane Elastomer Nanocomposites: Interactions between Polymer Phases and Nanofillers

19.08.2015 | Sílvia M. Cruz, Júlio C. Viana, Macromolecular Materials and Engineering, 2015

Polyurethane thermoplastic elastomer (TPU) nanocomposites were prepared by the incorporation of 1 wt% of high‐structured carbon black (HSCB), carbon nanofibers (CNF), nanosilica (NS) and nanoclays (NC), following a proper high‐shear blending procedure. The TPU nanofilled mechanical properties ...

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Ni‐Coated SiC Particles: Synthesis and Densification

18.08.2015 | Mustapha Nechiche, Véronique Gauthier‐Brunet, Dominique Eyidi, Said Azem, Sylvain Dubois, Journal of the American Ceramic Society, 2015

The mechanofusion process, a dry particle coating route, has been successfully applied to coat micrometric SiC particles with submicrometric Ni filaments. In a first step, the mechanofusion parameters were optimized to form a continuous Ni coating onto SiC particles. In a second step, the ...

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Fabrication of Nanocarbon Composites Using In Situ Chemical Vapor Deposition and Their Applications

18.08.2015 | Chunnian He, Naiqin Zhao, Chunsheng Shi, Enzuo Liu, Jiajun Li, Advanced Materials, 2015

Nanocarbon (carbon nanotubes (CNTs) and graphene (GN)) composites attract considerable research interest due to their fascinating applications in many fields. Here, recent developments in the field of in situ chemical vapor deposition (CVD) for the design and controlled preparation of advanced ...

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