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2.566 Aktuelle Fachpublikationen zum Thema temperature

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Effects of UV radiation on aquatic ecosystems and interactions with other environmental factors

18.11.2014 | Donat-P. Häder; Craig E. Williamson; Sten-Åke Wängberg; Milla Rautio; Kevin C. Rose; Kunshan Gao; E. Walter Helbling ..., Photochemical & Photobiological Sciences, 2014

Interactions between climate change and UV radiation are having strong effects on aquatic ecosystems due to feedback between temperature, UV radiation, and greenhouse gas concentration. Higher air temperatures and incoming solar radiation are increasing the surface water temperatures of lakes and ...

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Microwave, r0 structural parameters, conformational stability and vibrational assignment of cyclopropylcyanosilane

16.11.2014 | Author(s): James R. Durig , Gamil A. Guirgis , Dattatray K. Sawant , Nathan A. Seifert , Bhushan S. Deodhar , B ..., Chemical Physics, 2014

Publication date: 5 December 2014 Source:Chemical Physics, Volume 445 Author(s): James R. Durig , Gamil A. Guirgis , Dattatray K. Sawant , Nathan A. Seifert , Bhushan S. Deodhar , Brooks H. Pate , Savitha S. Panikar , Peter Groner , Jason S. Overby , Sahand M. Askarian The ...

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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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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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Local measurement of mass transfer in a reactive spray for CO2 capture

13.11.2014 | Maria Ouboukhlik, Sawitree Saengkaew, Marie‐Christine Fournier‐Salaün, Lionel Estel, Gérard Grehan, The Canadian Journal of Chemical Engineering, 2014

Abstract CO2 capture is still a major challenge for the environment and decarbonisation of gas streams. It has been industrially feasible for several decades using chemical absorption by alkanolamine solvents. The purpose of this work is to characterize the mass transfer in a spray contactor ...

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Exothermicity in wood torrefaction and its impact on product mass yields: From micro to pilot scale

13.11.2014 | Sofien Cavagnol, John F. Roesler, Elena Sanz, Willi Nastoll, Pin Lu, Patrick Perré, The Canadian Journal of Chemical Engineering, 2014

Abstract This paper focuses on the effects of exothermic reactions during torrefaction, a mild heat treatment process in the temperature range 200 to 300°C. Three different scales are considered, the micro‐particle (powder scale), the macro‐particle (woodchips or larger) and the thick fixed ...

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Development of a modelling tool representing biomass gasification step in a dual fluidised bed

13.11.2014 | Halima Noubli, Sylvie Valin, Bertrand Spindler, Mehrdji Hemati, The Canadian Journal of Chemical Engineering, 2014

Abstract The aim of the present study is to develop a 1D modelling tool representing biomass gasification in a dual fluidized bed. This tool should be used with the objective to control and scale‐up the process for different pilot scales and operating conditions. This implies that the ...

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Sensors, Vol. 14, Pages 21453-21465: Effect of CSA Concentration on the Ammonia Sensing Properties of CSA-Doped PA6/PANI Composite Nanofibers

13.11.2014 | Pang, Zengyuan ; Fu, Jiapeng ; Lv, Pengfei ; Huang, Fenglin ; Wei, Qufu, Sensors, 2014

Camphor sulfonic acid (CSA)-doped polyamide 6/polyaniline (PA6/PANI) composite nanofibers were fabricated using in situ polymerization of aniline under different CSA concentrations (0.02, 0.04, 0.06, 0.08 and 0.10 M) with electrospun PA6 nanofibers as templates. The structural, morphological and ...

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Vapor-Phase (p, ρ, T, x) Behavior and Virial Coefficients for the (Methane + Propane) System

12.11.2014 | Markus Richter; Mark O. McLinden, Journal of Chemical & Engineering Data, 2014

The (p, ρ, T, x) behavior of three (methane + propane) mixtures was measured with a two-sinker magnetic suspension densimeter over the temperature range of (248.15 to 373.15) K with pressures up to the dew-point pressure or 6 MPa, whichever was lower. The compositions of the gravimetrically ...

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Effect of Isomerism on Molecular Packing and Gas Transport Properties of Poly(benzoxazole-co-imide)s

11.11.2014 | Yongbing Zhuang; Jong Geun Seong; Yu Seong Do; Hye Jin Jo; Moon Joo Lee; Gang Wang; Michael D. Guiver; Young Moo Lee, Macromolecules, 2014

A facile approach to synthesize poly(benzoxazole-co-imide)s without thermal rearrangement at high temperature is proposed. Poly(benzoxazole-co-imide)s with improved mechanical and solution-processable properties were prepared through polycondensation of 4,4′-(hexafluoroisopropylidene) diphthalic ...

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