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1.684 Aktuelle Fachpublikationen zum Thema temperature

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A pulsed uniform Laval expansion coupled with single photon ionization and mass spectrometric detection for the study of large molecular aggregates

26.03.2015 | Bernhard Schläppi; Jessica H. Litman; Jorge J. Ferreiro; David Stapfer; Ruth Signorell, Physical Chemistry Chemical Physics, 2015

We report on a new instrument that allows for the investigation of weakly-bound molecular aggregates under equilibrium conditions (constant temperature and pressure). The aggregates are formed in a Laval nozzle and probed with time-of-flight mass spectrometry in the uniform postnozzle flow; i.e. ...

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Structure-dependent water transport across nanopores of carbon nanotubes: toward selective gating upon temperature regulation

26.03.2015 | Kuiwen Zhao; Huiying Wu, Physical Chemistry Chemical Physics, 2015

Determining water structure in nanopores and its influence on water transport behaviour is of great importance for understanding and regulating the transport across nanopores. Here we report an ultrafast-slow flow transition phenomenon for water transport across nanopores of carbon nanotubes ...

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Gas-Phase Kinetics of the N + C2N Reaction at Low Temperature

20.03.2015 | James W. Stubbing; Gianmarco Vanuzzo; Audrey Moudens; Jean-Christophe Loison; Kevin M. Hickson, Journal of Physical Chemistry A, 2015

The rate of the gas-phase N(4S) + C2N(X∼2Πi) reaction has been measured in a continuous supersonic flow reactor down to 54 K through the relative-rate method using the N(4S) + OH(X2Π) → H(2S) + NO(X2Π) reaction as a reference. The microwave discharge technique was employed to produce high ...

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Effects of thermal radiation and chemical reactions on peristaltic flow of a Newtonian nanofluid under inclined magnetic field in a generalized vertical channel using homotopy perturbation method

13.03.2015 | M. Kothandapani, J. Prakash, Asia-Pacific Journal of Chemical Engineering, 2015

Abstract In this paper, we study the influences of inclined magnetic field, heat source, thermal radiation, and chemical reactions on peristaltic flow of a Newtonian nanofluid in a vertical generalized (tapered asymmetric) channel. The flow is engendered because of an asymmetric sinusoidal ...

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Energies, Vol. 8, Pages 1958-1974: Slit Wall and Heat Transfer Effect on the Taylor Vortex Flow

12.03.2015 | Liu, Dong ; Wang, Ying-Ze ; Shi, Wei-Dong ; Kim, Hyoung-Bum ; Tang, Ai-Kun, Energies, 2015

The Taylor vortex flow in the plain model with a constant temperature gradient effect was studied by experimental measurement, and the preliminary features of Taylor vortex flow affected by heat transfer process were obtained. This flow field in the plain model was also studied by numerical ...

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Ultra-performance LC-ESI/Q-TOF MS for the Rapid Analysis of Rivaroxaban: Method Validation Using Experimental Design for Robustness Evaluation

11.03.2015 | R. Wingert, Nathalie; A.G. Nunes, Matheus; T. Barden, Amanda; Gomes, Patricia; I. Muller, Edson; M.M. Flores, Erico; ..., Current Analytical Chemistry, 2015

Abstract: Sensitive, fast, and precise UPLC-MS/MS analytical method was validated for the identification and quantification of the anticoagulant rivaroxaban (RIV) in pharmaceutical dosage form, using a full factorial design for robustness assessment. Chromatographic separation was achieved ...

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Enhanced TL response due to radiation induced defects in Ge-doped silica preforms

08.03.2015 | Author(s): A.S Siti Shafiqah , Y.M Amin , R. Md Nor , N. Tamchek , D.A. Bradley, Radiation Physics and Chemistry, 2015

Publication date: June 2015 Source:Radiation Physics and Chemistry, Volume 111 Author(s): A.S Siti Shafiqah , Y.M Amin , R. Md Nor , N. Tamchek , D.A. Bradley Study has been made of the thermoluminescence (TL) response of Ge-doped silica preforms fabricated using the MCVD process and ...

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Surface Influences on the Electrodiffusive Behavior in Mesoporous Templates

04.03.2015 | M. Graf, J. Poppe, A. Eychmüller, Small, 2015

The physicochemical details of the well‐established template‐assisted electrodeposition process for metal nanowire fabrication are investigated with respect to the physical origination for template geometry limitation. The overall process of metal reduction inside anodized Al2O3 (AAO) is divided ...

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Numerical evaluation and improvement efficiency of radial flow moving‐bed reactors for catalytic pyrolysis of light hydrocarbons to low carbon olefins

04.03.2015 | Fang‐Zhi Xiao, Houyang Chen, Zheng‐Hong Luo, The Canadian Journal of Chemical Engineering, 2015

Abstract A three‐dimensional (3D) reactor model based on the Eulerian‐Eulerian approach was applied to describe the gas‐solid flow and heat transfer performance in a radial flow moving bed reactor (RFMBR). A six‐lumped kinetic model for the catalytic pyrolysis of C4 hydrocarbon was employed. ...

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LC-MS/MS studies for the identification and characterization of degradation products of Fenofibrate and their degradation pathways

04.03.2015 | Acta Chromatographica, 2015

In the present study, the degradation behavior of Fenofibrate under different International Conference on Harmonization (ICH) suggested conditions was studied. Characterization of degradation products by liquid chromatography-tandem mass spectrometry (LC-MS/MS) studies in solution form was done, ...

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