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1.644 Aktuelle Fachpublikationen zum Thema temperature

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Interactions of Saccharides in Aqueous Glycine and Leucine Solutions at Different Temperatures of (293.15 to 313.15) K: A Viscometric Study

12.12.2014 | Kuldeep Kumar; Baljeet Singh Patial; Suvarcha Chauhan, Journal of Chemical & Engineering Data, 2014

The results of viscosity measurements of ribose, maltose, and raffinose at molalities ranging from (0.050 to 0.100) mol·kg–1 in aqueous solutions of glycine and leucine of (0.025, 0.050, and 0.100) mol·kg–1, respectively, over a wide temperature range of (293.15 to 313.15) K, have been reported. ...

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Effects of unsteady expansion/contraction of Wang's cylinder problem with suction near a stagnation point

10.12.2014 | Tariq Javed, Irfan Mustafa, Asia-Pacific Journal of Chemical Engineering, 2014

ABSTRACT The unsteady viscous incompressible stagnation point flow over an expanding/contracting cylinder with heat and mass transfer is studied in this article. The governing partial differential equations are transformed into a couple nonlinear ordinary differential equations by using ...

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Heterogeneous catalytic synthesis of poly(butylene succinate) by attapulgite‐supported Sn catalyst

10.12.2014 | Shiquan Lai, Yan Gao, Li Yue, Journal of Applied Polymer Science, 2014

ABSTRACT An attapulgite‐supported Sn catalyst (Sn‐palgorskite) was successfully prepared by ion‐exchange co‐impregnation method. The catalytic effect of Sn‐attapulgite on the melt polycondensation reaction of poly(butylene succinate) (PBS) was examined by comparing with that of anhydrous SnCl2 ...

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Hydrogen Production by the Water–Gas Shift Reaction Using an Atmospheric Steam Plasma Torch System with a Reverse Vortex Reactor

10.12.2014 | Suk H. Ma; Dae H. Choi; Se M. Chun; Sang S. Yang; Yong C. Hong, Energy & Fuels, 2014

The water–gas shift reaction (WGSR) using a pure steam plasma with CO as the reactant was accomplished in this study. The steam plasma generated by microwaves at an atmospheric pressure provides highly active species and a high-temperature plasma flame at about 6000 K, which enhances the chemical ...

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Effects of Viscous Dissipation and Rarefaction on Parallel Plates with Constant Heat Flux Boundary Conditions

05.12.2014 | Hari Mohan Kushwaha, Santosh K. Sahu, Chemical Engineering & Technology, 2014

Abstract The effect of viscous dissipation and rarefaction on heat transfer characteristics of hydrodynamically and thermally fully developed flow between parallel plates with constant heat flux conditions is analyzed. Three different types of heat flux boundary conditions, i.e., both plates ...

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CFD Simulation of the Heat and Mass Transfer Process during Centrifugal Short‐Path Distillation

05.12.2014 | Jiang Yu, Lijun Chen, Xigang Yuan, Aiwu Zeng, Ji Ju, Chemical Engineering & Technology, 2014

Abstract Numerical simulation was carried out for a centrifugal short‐path distillation arrangement using the computational fluid dynamics technology. Both two phases and interfacial transport were taken into account with an attempt to explore the heat and mass transport in the film body and ...

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Slip heating in die drool

04.12.2014 | Peter H. Gilbert, A. Jeffrey Giacomin, The Canadian Journal of Chemical Engineering, 2014

When molten plastic is extruded from a die, it can collect on the open die face. Called die drool, this phenomenon costs plastics manufacturers by requiring shutdown for die cleaning. This has been attributed to cohesive failure within the fluid at an internal surface, where the fluid slips on ...

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Artificial weathering effect on the structure and properties of polypropylene/polyamide‐6 blends compatibilized with PP‐g‐MA

04.12.2014 | Samir Mouffok, Mustapha Kaci, Journal of Applied Polymer Science, 2014

ABSTRACT The degradation of uncompatibilized and compatibilized PP/PA‐6 (70/30 wt %) with PP‐g‐MA under accelerated UV light was investigated using Fourier Transform Infrared Spectroscopy (FTIR) spectroscopy, melt flow index (MFI) tester, tensile test, differential scanning calorimetry (DSC), ...

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Market-Driven Emissions from Recovery of Carbon Dioxide Gas

03.12.2014 | Sarang D. Supekar; Steven J. Skerlos, Environmental Science & Technology, 2014

This article uses a market-based allocation method in a consequential life cycle assessment (LCA) framework to estimate the environmental emissions created by recovering carbon dioxide (CO2). We find that 1 ton of CO2 recovered as a coproduct of chemicals manufacturing leads to additional ...

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Silk fibroin nanofibers electrospun on glass fiber as a potential device for solid phase microextraction

01.12.2014 | Vinícius Müller, Marília Cestari, Soraya M. Palácio, Sílvia D. de Campos, Edvani C. Muniz, Elvio A. de Campos, Journal of Applied Polymer Science, 2014

ABSTRACT The electrospinning technique was applied to coat fused silica fibers with regenerated silk fibroin (RSF) nanofibers, aiming to build a device applicable for solid phase microextraction analysis. The device was characterized by attenuated total reflectance infrared spectroscopy, ...

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