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3.601 Aktuelle Fachpublikationen zum Thema temperature

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Enhanced Energy Storage of Dielectric Nanocomposites at Elevated Temperatures

23.05.2015 | Mohammad Rajib, Ricardo Martinez, Mohammad Shuvo, Hasanul Karim, Diego Delfin, Samia Afrin, Gerardo Rodriguez, Raman ..., International Journal of Applied Ceramic Technology, 2015

Enhancing the performance of dielectric capacitors toward higher energy density and higher operating temperatures has been drawing increased interest. Therefore, in this investigation, research efforts were dedicated to the fabrication and characterization of nanocomposites in order to enhance ...

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Comparison of Heat-Induced Aggregation of Globular Proteins

22.05.2015 | Roy J. B. M. Delahaije; Peter A. Wierenga; Marco L. F. Giuseppin; Harry Gruppen, Journal of Agricultural and Food Chemistry, 2015

Typically, heat-induced aggregation of proteins is studied using a single protein under various conditions (e.g., temperature). Because different studies use different conditions and methods, a mechanistic relationship between molecular properties and the aggregation behavior of proteins has not ...

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Honeycomb-like Macro-Germanium as High-Capacity Anodes for Lithium-Ion Batteries with Good Cycling and Rate Performance

22.05.2015 | Jianwen Liang; Xiaona Li; Zhiguo Hou; Tianwen Zhang; Yongchun Zhu; Xuedong Yan; Yitai Qian, Chemistry of Materials, 2015

Macro-Ge powder has been synthesized with a novel hydrothermal reduction of commercial GeO2 at 200 °C in an autoclave. The obtained macro-Ge product demonstrates a honeycomb-like macroscopic network structure with a high tap density of 2.19 g cm–3. As for the anode material of lithium ion ...

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Competition between Intra- and Intermolecular Association of Chain Molecules with Water-like Solvent

22.05.2015 | Deepti Ballal; Walter G. Chapman, Journal of Physical Chemistry B, 2015

Fluid properties and phase behavior of systems such as glycol ethers, carboxylic acids, and proteins are affected by the competition between intra- and intermolecular hydrogen bonding. Here we study this competition by extending Wertheim’s first-order thermodynamic perturbation theory to include ...

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Shape-Memory Polymers with Adjustable High Glass Transition Temperatures

21.05.2015 | Xinli Xiao; Deyan Kong; Xueying Qiu; Wenbo Zhang; Fenghua Zhang; Liwu Liu; Yanju Liu; Shen Zhang; Yang Hu; Jinsong Leng, Macromolecules, 2015

Shape-memory polymers (SMPs) are synthesized with adjustable glass transition temperature (Tg) ranging from 299 to 322 °C, higher than those reported previously. The polyimide containing thermal stable but flexible linkages within the backbone act as reversible phase, and high molecular weight ...

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An Infrared Spectroscopic and Theoretical Study on (CH3)3N-H+-(H2O)n, n = 1 – 22: Highly Polarized Hydrogen Bond Networks of Hydrated Clusters

20.05.2015 | Ryunosuke Shishido; Yin- Chen Li; Chen-Wei Tsai; Dan Bing; Asuka Fuji; Jer-Lai Kuo, Physical Chemistry Chemical Physics, 2015

Infrared spectra of protonated trimethylamine (TMA) - water clusters, (CH3)3N-H+-(H2O)n (n = 1 – 22) were measured in the OH stretching vibrational region by size-selective photodissociation spectroscopy. Density functional theory calculations of stable structures were performed, and temperature ...

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EMR Study and DFT-Assisted Identification of Transient Radicals in X-Irradiated Crystalline Sucrose

20.05.2015 | Jevgenij Kusakovskij; Freddy Callens; Henk Vrielinck, Journal of Physical Chemistry B, 2015

Solid-state sucrose is a well-known dosimetric system, which is capable of reliable dose estimates only at a considerable time after exposure. Immediately after irradiation at room temperature, its electron paramagnetic resonance (EPR) spectrum is dominated by contributions from unstable ...

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Sensors, Vol. 15, Pages 11685-11700: Optimal Self-Tuning PID Controller Based on Low Power Consumption for a Server Fan Cooling System

20.05.2015 | Lee, Chengming ; Chen, Rongshun, Sensors, 2015

Recently, saving the cooling power in servers by controlling the fan speed has attracted considerable attention because of the increasing demand for high-density servers. This paper presents an optimal self-tuning proportional-integral-derivative (PID) controller, combining a PID neural network ...

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Thermo‐mechanical Coupling Properties of Proton Exchange Membrane in Liquid Water

19.05.2015 | S. Shi, G. Chen, X. Chen, Fuel Cells, 2015

Abstract In this study, the effects of the combination and interaction of thermal and mechanical loading on mechanical behaviors of proton exchange membranes (PEMs) under immersed condition were investigated. Experiments under two kinds of loading path were performed: the quasi‐simultaneous ...

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Organocatalytic Polymerization of Furfuryl Methacrylate and Post‐Diels–Alder Click Reaction to Cross‐Linked Materials

19.05.2015 | Shuo (Kelvin) Feng, Meghan Schmitt, Eugene Y.‐X. Chen, Macromolecular Chemistry and Physics, 2015

Biomass‐derived furfuryl methacrylate (FMA) has been effectively polymerized at ambient temperature by the P4‐phosphazene superbase, tBu‐P4, with or without iPrOH as the coinitiator, producing syndio‐rich atactic poly(furfuryl methacrylate) (PFMA). The polymerization exhibits high initiation ...

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