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6.347 Aktuelle Fachpublikationen zum Thema temperature

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Single step derivatization with CF3 enone of thiophene at ambient temperature to determine propellant grade hydrazines: a study by GC and GC-MS

19.11.2014 | Selvakumar Subramanian; Somanathan Narayanasastri; Audisesha Reddy Kami Reddy, Analyst, 2014

A simple, highly selective and rapid gas chromatography method (packed column with flame ionization detection) has been developed to determine hydrazine and monomethylhydrazine individually and for selective determination of hydrazine in the UH 25 mixture in organic medium. This method is based ...

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Fine structuration of low-temperature co-fired ceramic (LTCC) microreactors

18.11.2014 | Bo Jiang; Julien Haber; Albert Renken; Paul Muralt; Lioubov Kiwi-Minsker; Thomas Maeder, Lab on a Chip, 2014

The development of microreactors that are operating under harsh conditions is always of great interests for many applications. Here we present a microfabrication process based on low-temperature co-fired ceramic (LTCC) technology for producing microreactors, which are able to perform chemical ...

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Energies, Vol. 7, Pages 7368-7394: Thermodynamic Analysis of a Ship Power Plant Operating with Waste Heat Recovery through Combined Heat and Power Production

14.11.2014 | Grljušić, Mirko ; Medica, Vladimir ; Račić, Nikola, Energies, 2014

The goal of this research is to study a cogeneration plant for combined heat & power (CHP) production that utilises the low-temperature waste energy in the power plant of a Suezmax-size oil tanker for all heating and electricity requirements during navigation. After considering various ...

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Short-Term Coral Bleaching Is Not Recorded by Skeletal Boron Isotopes

14.11.2014 | Verena Schoepf et al., PLoS ONE, 2014

by Verena Schoepf, Malcolm T. McCulloch, Mark E. Warner, Stephen J. Levas, Yohei Matsui, Matthew D. Aschaffenburg, Andréa G. Grottoli Coral skeletal boron isotopes have been established as a proxy for seawater pH, yet it remains unclear if and how this proxy is affected by seawater temperature. ...

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Burst Strength of Tubing and Casing Based on Twin Shear Unified Strength Theory

14.11.2014 | Yuanhua Lin et al., PLoS ONE, 2014

by Yuanhua Lin, Kuanhai Deng, Yongxing Sun, Dezhi Zeng, Wanying Liu, Xiangwei Kong, Ambrish Singh The internal pressure strength of tubing and casing often cannot satisfy the design requirements in high pressure, high temperature and high H2S gas wells. Also, the practical safety coefficient of ...

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Energies, Vol. 7, Pages 7395-7414: Dynamic Simulation of a CPV/T System Using the Finite Element Method

14.11.2014 | Renno, Carlo ; De Giacomo, Michele, Energies, 2014

The aim of this paper is the determination of a concentrating thermo-photovoltaic (CPV/T) system dynamic model by means of the finite element method (FEM). The system consist of triple-junction InGaP/InGaAs/Ge (indium-gallium phosphide/indium-gallium-arsenide/germanium) solar cells connected to ...

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Replacement of CH4 in Hydrate in Porous Sediments with Liquid CO2 Injection

13.11.2014 | Yu Zhang, Li‐Jun Xiong, Xiao‐Sen Li, Zhao‐Yang Chen, Chun‐Gang Xu, Chemical Engineering & Technology, 2014

Abstract The dynamics of the replacement of CH4 in hydrate in porous sediments with liquid CO2 was investigated using a self‐developed experimental apparatus at different temperatures and initial pressures. The pressure increases steadily as the replacement reaction processes. The amount of ...

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Prediction of Air Specific Heat Ratios at Elevated Pressures Using a Novel Modeling Approach

13.11.2014 | Arash Kamari, Amir H. Mohammadi, Alireza Bahadori, Sohrab Zendehboudi, Chemical Engineering & Technology, 2014

Abstract An accurate and efficient model based on least‐squares support vector machines (LSSVM) is developed for the determination of air specific heat ratios at elevated pressures. Additionally, the coupled simulated annealing optimization strategy is used to calculate the optimal values of ...

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Freeze‐drying for Microencapsulation of Turmeric Oleoresin Using Modified Starch and Gelatin

13.11.2014 | Cassia Roberta Malacrida, Sungil Ferreira, Larissa Angélica Cireli Zuanon, Vânia Regina Nicoletti Telis, Journal of Food Processing and Preservation, 2014

Abstract The aims of this study were to assess the turmeric oleoresin microencapsulation by freeze‐drying with modified starch/gelatin and to evaluate its stability during storage at different temperatures and light. Encapsulated turmeric oleoresin w stored at −20, 25 and 60C, in the absence ...

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Synthesis of nanostructure hydroxy sodalite composite membranes via hydrothermal method: support surface modification and synthesis method effects

13.11.2014 | Neda Kalantari, Mohammad Javad Vaezi, Mostafa Yadollahi, Ali Akbar Babaluo, Behruz Bayati, Akram Kazemzadeh, Asia-Pacific Journal of Chemical Engineering, 2014

ABSTRACT Multilayer hydroxy sodalite zeolite membranes were synthesized on the outer surface of support with and without modification via in situ and secondary growth hydrothermal synthesis methods. The synthesized zeolite membranes were characterized by X‐ray diffraction, scanning electron ...

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