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3.338 Aktuelle Fachpublikationen zum Thema temperature

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Fullerene cyanation does not always increase electron affinity: an experimental and theoretical study

18.11.2014 | Tyler T. Clikeman; Shihu H. M. Deng; Alexey A. Popov; Xue-Bin Wang; Steven H. Strauss; Olga V. Boltalina, Physical Chemistry Chemical Physics, 2014

The electron affinities of C70 derivatives with trifluoromethyl, methyl and cyano groups were studied experimentally and theoretically using low-temperature photoelectron spectroscopy (LT PES) and density functional theory (DFT). The electronic effects of these functional groups were determined ...

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Device fabrication and dc electrical transport properties of barium manganite nanofibers (BMO-NFs)

16.11.2014 | Author(s): Khizar Hayat , M. Javid Iqbal , Kamran Rasool , Yaseen Iqbal, Chemical Physics Letters, 2014

Publication date: 25 November 2014 Source:Chemical Physics Letters, Volumes 616–617 Author(s): Khizar Hayat , M. Javid Iqbal , Kamran Rasool , Yaseen Iqbal Barium manganite nanofibers were synthesized using electrospinning technique. X-ray diffraction revealed the formation of single ...

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Electronic energy gap correlation function and spectral density of anharmonic molecules at low temperatures I: Theory

16.11.2014 | Author(s): Mohamad Toutounji, Chemical Physics Letters, 2014

Publication date: 2 January 2015 Source:Chemical Physics Letters, Volume 618 Author(s): Mohamad Toutounji A closed-form expression for the electronic energy gap correlation function of anharmonic molecules weighed by their coupling strengths to the electronic transition is derived. These ...

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Synthesis of Single‐phase β‐Yb2Si2O7 and Properties of Its Sintered Bulk

14.11.2014 | Shu‐Bin Wang, Yan‐Ru Lu, Yan‐Xia Chen, International Journal of Applied Ceramic Technology, 2014

Single‐phase β‐Yb2Si2O7 was synthesized by solid‐state reaction using Yb2O3 and SiO2 gel. SiO2 gel significantly decreased the synthesis temperature and shortened the holding time. Bulk Yb2Si2O7 was obtained by pressureless sintering. Grain size, relative density (92.9%), and flexural strength ...

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Defect removal after low temperature annealing of boron implantations by emitter etch‐back for silicon solar cells

13.11.2014 | Ralph Müller, Anamaria Moldovan, Christian Schiller, Jan Benick, physica status solidi (RRL) - Rapid Research Letters, 2014

Ion implantation offers new possibilities for silicon solar cell production, e.g. single side doping that can be structured in‐situ with shadow masks. While phosphorus implantations can easily be annealed at low temperature, the annealing of boron implantations is challenging. In this study, we ...

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Combustion properties of Brazilian natural wood species

13.11.2014 | Monique Amaro Rocha, Alexandre Landesmann, Fire and Materials, 2014

SUMMARY This paper investigates the combustion characteristics of 12 wood species natural to Brazil. A mass loss cone calorimeter was used to obtain the properties associated with (i) heat release rate (HRR), peak HRR, and total heat released; (ii) total mass loss and mass loss rate; (iii) ...

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Effect of Powder Calcination Temperature and Ceramic Post‐Treatment on the Optical Properties of Nd:YAG Ceramics

12.11.2014 | Benyuan Ma, Tiecheng Lu, Nian Wei, Zhongwen Lu, Feng Li, Xingtao Chen, Yongbing Guan, Wei Zhang, International Journal of Applied Ceramic Technology, 2014

Using the raw powders synthesized via a modified coprecipitation method with the ethanol–water precipitant solvent and combined with various powder calcination temperatures, the ceramics were fabricated by dry pressing, vacuum sintering, and air annealing. The results showed that higher powder ...

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Simplified correlations of gypsum board thermal properties for simulation tools

12.11.2014 | Georgios K. Semitelos, Ioannis D. Mandilaras, Dimos A. Kontogeorgos, Maria A. Founti, Fire and Materials, 2014

SUMMARY The current work proposes for the first time an integrated set of simplified correlations for the thermal properties, i.e. effective thermal conductivity, effective specific heat and effective density, of commercial gypsum boards as a function of temperature that can be easily ...

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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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Fullerene Cyanation Does Not Always Increase Electron Affinity: Experimental and Theoretical Study

12.11.2014 | Tyler T Clikeman; Shihu Deng; Alexey A Popov; Xue-Bin Wang; Steven H Strauss; Olga V. Boltalina, Physical Chemistry Chemical Physics, 2014

The electron affinities of C70 derivatives with trifluoromethyl, methyl and cyano groups were studied experimentally and theoretically using low-temperature photoelectron spectroscopy (LT PES) and density functional theory (DFT). The electronic effects of these functional groups were determined ...

mehr

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