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1.586 Aktuelle Fachpublikationen zum Thema temperature

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Heterogeneous photochemistry of gaseous NO2 on solid Fluoranthene films: A source of gaseous nitrous acid (HONO) in the urban environment

16.09.2013 | Author(s): David Cazoir , Marcello Brigante , Rachid Ammar , Barbara D’Anna , Christian George, Journal of Photochemistry and Photobiology A: Chemistry, 2013

Publication date: Available online 10 September 2013 Source:Journal of Photochemistry and Photobiology A: Chemistry Author(s): David Cazoir , Marcello Brigante , Rachid Ammar , Barbara D’Anna , Christian George Using a coated flow tube equipped with several near-ultraviolet emitting ...

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Drying of milk–blackberry pulp mixture in spouted bed

11.09.2013 | Matheus B. Braga, Sandra C. S. Rocha, The Canadian Journal of Chemical Engineering, 2013

Spouted bed drying of a paste mixture of milk and blackberry pulp using inert beads of polystyrene and polypropylene was analysed in this work. Atomisation and dripping of the paste were compared as feeding modes. The experimental design used atomisation feeding to analyse the effects of air ...

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Experimental investigation and simulation of hollow fiber membrane process for SF6 recovery from GIS

10.09.2013 | Kee Hong Kim, Pravin G. Ingole, Jong Hak Kim, Hyung Keun Lee, Polymers for Advanced Technologies, 2013

In this present study, polyethersulfone hollow fiber membrane was used to recover sulfur hexafluoride (SF6) from gas‐insulated switchgear (GIS). SF6, N2 pure gas and mixed gas (12.5 vol.% of SF6) experiment was initiated to observe permeation behavior according to temperature and pressure ...

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Critical Phenomenon During Drying of Semiaromatic, Transparent and Soluble Polyimide Cast Films: Real-Time Observation of Birefringence and Other Integrated Parameters

10.09.2013 | Yuji Eguchi; Emre Unsal; Miko Cakmak, Macromolecules, 2013

A newly developed real-time multifunctional monitoring system was used to track in-plane and out-of-plane birefringence, weight, thickness and surface temperature of semiaromatic, transparent, and soluble polyimide cast films during drying. At a critical point during drying, out-of-plane ...

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Sensors, Vol. 13, Pages 12012-12029: Practical Strategies for Stable Operation of HFF-QCM in Continuous Air Flow

09.09.2013 | Wessels, Alexander ; Klöckner, Bernhard ; Siering, Carsten ; Waldvogel, Siegfried R., Sensors, 2013

Currently there are a few fields of application using quartz crystal microbalances (QCM). Because of environmental conditions and insufficient resolution of the microbalance, chemical sensing of volatile organic compounds in an open system was as yet not possible. In this study we present ...

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Enantioseparation and Determination of the Chiral Fungicide Furametpyr Enantiomers in Rice, Soil, and Water by High‐Performance Liquid Chromatography

07.09.2013 | Fengshou Dong, Xiu Chen, Jun Xu, Xingang Liu, Zenglong Chen, Yuanbo Li, Hongjun Zhang, Yongquan Zheng, Chirality, 2013

ABSTRACT The chiral fungicide furametpyr is widely used in the rice field to control rice sheath blight; however, furametpyr enantiomers are treated as just one compound in traditional achiral analysis, which gives only partial information. An effective chiral analytical method was developed ...

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RP-LC and TLC Densitometric Determination of Paracetamol and Pamabrom in Presence of Hazardous Impurity of Paracetamol and Application to Pharmaceuticals

05.09.2013 | Ola Mohamed El-Houssini, Analytical Chemistry Insights, 2013

Two simple, accurate and reproducible methods were developed and validated for the simultaneous determination of paracetamol (PARA) and pamabrom (PAMB) in pure form and in tablets. The first method was based on reserved-phase high-performance liquid chromatography, on a Thermo Hypersil ODS column ...

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Gas‐Phase Reaction of Monomethylhydrazine with Ozone: Kinetics and OH Radical Formation

03.09.2013 | S. Richters, T. Berndt, International Journal of Chemical Kinetics, 2013

ABSTRACT The gas‐phase reaction of monomethylhydrazine (CH3NHNH2; MMH) with ozone was investigated in a flow tube at atmospheric pressure and a temperature of 295 ± 2 K using N2/O2 mixtures (3–30 vol% O2) as the carrier gas. Proton transfer reaction–mass spectrometry (PTR‐MS) and long‐path ...

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Non‐Isothermal Modeling of a Non‐Newtonian Fluid Flow in a Twin Screw Extruder Using the Fictitious Domain Method

03.09.2013 | Hadi Sobhani, Patrick D. Anderson, Han H. E. Meijer, Mir Hamid Reza Ghoreishy, Mohammad Razavi‐Nouri, Macromolecular Theory and Simulations, 2013

In this study, using a developed mathematical model, the non‐isothermal behavior of a non‐Newtonian fluid flow in the conveying elements of an intermeshing co‐rotating twin screw extruder (TSE) is simulated based on the combination of mixed finite elements and fictitious domain methods. The ...

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Flow Giese reaction using cyanoborohydride as a radical mediator

03.09.2013 | Takahide Fukuyama, Takuji Kawamoto, Mikako Kobayashi and Ilhyong Ryu, Beilstein Journal of Organic Chemistry, 2013

Abstract Tin-free Giese reactions, employing primary, secondary, and tertiary alkyl iodides as radical precursors, ethyl acrylate as a radical trap, and sodium cyanoborohydride as a radical mediator, were examined in a continuous flow system. With the use of an automated flow microreactor, flow ...

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