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1.997 Aktuelle Fachpublikationen zum Thema temperature

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Micellar effect on the kinetics of oxidation of methyl blue by Ce(IV) in sulfuric acid medium

04.01.2015 | Author(s): Mohammed Hassan , Mohammed D. AlAhmadi , Majid Mosaid, Arabian Journal of Chemistry, 2015

Publication date: January 2015 Source:Arabian Journal of Chemistry, Volume 8, Issue 1 Author(s): Mohammed Hassan , Mohammed D. AlAhmadi , Majid Mosaid The kinetics of oxidation of methyl blue (MB) by Ce(IV) in aqueous and surfactant media has been carried out to explore the micellar ...

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Fabrication of Riblet Structures on a Ni‐based Superalloy (PWA1483) for Potential Drag Reduction in High Temperature Applications Based on Laser Optimization

02.01.2015 | Antje Schlieter, I. Shakhverdova, C. Leyens, Advanced Engineering Materials, 2015

We propose a new laser‐based fabrication process of small‐sized riblets on PWA1483 coated on a 3 μm‐thin sputtered Ni/Cr/Ni multilayer. Laser ablation was used for local material removal. Subsequent oxidation was used to provide an optimal riblet dimensions for a drug reduction and oxidation ...

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Shock Tube and Kinetic Modeling Study of Cyclopentane and Methylcyclopentane

31.12.2014 | Zemin Tian; Chenglong Tang; Yingjia Zhang; Jiaxiang Zhang; Zuohua Huang, Energy & Fuels, 2014

Ignition delay times for 1% cyclopentane/O2 and 0.833% methylcyclopentane/O2 mixtures diluted by argon were measured behind reflected shock waves at pressures of 1.1 and 10 atm, with equivalence ratios of 0.577, 1.0, and 2.0, and in the temperature range from 1150 to 1850 K. Submechanisms for ...

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Semiconducting Properties and Phase-Matching Nonlinear Optical Response of the One-Dimensional Selenophosphates ANb2PSe10 (A = K, Rb, and Cs)

31.12.2014 | Jonathan C. Syrigos; Daniel J. Clark; Felix O. Saouma; Samantha M. Clarke; Lei Fang; Joon I. Jang; Mercouri G. Kanat ..., Chemistry of Materials, 2014

The new compounds ANb2PSe10, where A = K, Rb and Cs, form from polyselenophosphate flux reactions and crystallize in the noncentrosymmetric space group Pc. They feature infinite one-dimensional 1/∞[Nb2PSe10–] chains separated by alkali cations. The chains consist of [Nb2(Se2)2]4+ clusters bridged ...

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Mo–Si–B Coating for Improved Oxidation Resistance of Niobium

23.12.2014 | Otto J. Lu‐Steffes, Linfen Su, Dana M. Jackson, John H. Perepezko, Advanced Engineering Materials, 2014

A Mo–Si–B based coating was applied to niobium that produced a coating structure composed of molybdenum and niobium silicides. Oxidation tests at 1000 °C and 1200 °C showed that the Mo–Si–B coating provided enhanced oxidation protection of niobium due to the formation of a protective ...

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Changes in the Profile of Volatiles of Canned Coconut Milk during Storage

22.12.2014 | Patcharaporn Tinchan, Yaowapa Lorjaroenphon, Keith R. Cadwallader, Siree Chaiseri, Journal of Food Science, 2014

Abstract The alteration of the profile of volatiles of canned coconut milk was monitored during storage at ambient temperature. Canned coconut milk was thermally processed (121 °C for 5 min), and then stored at ambient temperature (32 to 35 °C) for 6 mo. Volatile compounds were assessed ...

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Uncertainty Analysis of the Mercury Oxidation over a Standard SCR Catalyst through a Lab-Scale Kinetic Study

22.12.2014 | Ana Suarez Negreira; Jennifer Wilcox, Energy & Fuels, 2014

A kinetic study of the mercury oxidation across a standard composition SCR catalyst under simplified flue gas conditions (12 % CO2, 5 % O2, 5 % H2O, 5 ppb Hg, 10 ppm of HCl in air) is carried out in a lab-scale packed-bed reactor. A thorough analysis is presented of the experimental error on the ...

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Studies on the thermal stability of BiCuSeO

21.12.2014 | Author(s): Celine Barreteau , David Berardan , Nita Dragoe, Journal of Solid State Chemistry, 2014

Publication date: February 2015 Source:Journal of Solid State Chemistry, Volume 222 Author(s): Celine Barreteau , David Berardan , Nita Dragoe BiCuSeO based materials have been reported as very promising thermoelectric materials, with thermoelectric figure of merit values that make them ...

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Studies on the photochemical stabilities of some fluorescent films based on pyrene and pyrenyl derivatives

21.12.2014 | Author(s): Xingmao Chang , Gang Wang , Chunmeng Yu , Yanru Wang , Meixia He , Juan Fan , Yu Fang, Journal of Photochemistry and Photobiology A: Chemistry, 2014

Publication date: 1 February 2015 Source:Journal of Photochemistry and Photobiology A: Chemistry, Volume 298 Author(s): Xingmao Chang , Gang Wang , Chunmeng Yu , Yanru Wang , Meixia He , Juan Fan , Yu Fang Photo-degradation is one of the most challenging problems to limit the ...

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Fenton-like Reaction-Mediated Etching of Gold Nanorods for Visual Detection of Co2+

19.12.2014 | Zhiyang Zhang; Zhaopeng Chen; Dawei Pan; Lingxin Chen, Langmuir, 2014

We have proposed a Fenton-like reaction-mediated etching of gold nanorods and applied it to the sensitive visual detection of Co2+ ions. With the presence of bicarbonate (HCO3–) and hydrogen peroxide(H2O2), Co2+ ions trigger a Fenton-like reaction, resulting in the generation of superoxide ...

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