نتایج جستجو برای: melting rate

تعداد نتایج: 985300  

Journal: :Chemical communications 2013
Xiao-Yan Chen George S Goff Mauricio Quiroz-Guzman Daniel P Fagnant Joan F Brennecke Brian L Scott Wolfgang Runde

The carboxyl-functionalized phosphonium ionic liquid (IL), [HCTMP][Tf(2)N], enabled the directed nucleation of monomeric or dimeric uranyl(vi) compounds. This new IL is the first carboxyl-functionalized IL which is liquid at room temperature and exhibits a wider electrochemical window and lower melting point than its ammonium analogue.

Journal: :Soft matter 2016
Lara A Patel James T Kindt

Simulations of small unilamellar lipid bilayer vesicles have been performed to model their response to an instantaneous rise in temperature, starting from an initial low-temperature structure, to temperatures near or above the main chain transition temperature. The MARTINI coarse-grained force-field was used to construct slabs of gel-phase DPPC bilayers, which were assembled into truncated icos...

2016
Kwang-Hyeon Lee Seong-Won Choi Tae-Jin Yoon Chung-Yun Kang

This study applied laser surface melting process using CW(Continuous wave) Yb:YAG laser and cold-work die steel SM45C and investigated microstructure and hardness. Laser beam speed, power and beam interval are fixed at 70 mm/sec, 2.8 kW and 800 μm respectively. Depth of Hardening layer(Melting zone) was a minimum of 0.8 mm and a maximum of 1.0 mm that exceeds the limit of minimum depth 0.5 mm a...

2006
Xiaobing Liu Simon J. Rees Jeffrey D. Spitler

This paper describes an experimental validation exercise for a newly developed numerical model of the snow melting process on heated pavement surfaces. The model is able to predict the conditions of the snow, ice and water during the snow melting process on hydronically-heated pavements given time-varying weather and heating system boundary conditions. Validation results show that the model sat...

2007
William H. Duff Leonid V. Zhigilei

Short pulse laser melting and resolidification of a metal target are investigated in continuum and atomistic computer simulations. The cooling rates achievable in laser quenching are calculated within the framework of two-temperature model for a range of laser fluences and pulse durations. A well-defined maximum in the cooling rate dependence on the pulse duration and fluence is observed and ex...

2009
E. S. Kite M. Manga

We provide estimates of volcanism versus time for planets with Earth-like composition and masses 0.25 25 M⊕, as a step toward predicting atmospheric mass on extrasolar rocky planets. Volcanism requires melting of the silicate mantle. We use a thermal evolution model, calibrated against Earth, in combination with standard melting models, to explore the dependence of convection-driven decompressi...

2004
R. Kojima M. Susa

Structural changes associated with melting of thin gFe–C films having (100), (110) and (111) surfaces have been investigated by molecular dynamics simulation. Structures of thin film and bulk models of gFe containing about 0–4 at.% C were calculated at constant temperatures between 1000 and 1800 K. The liquidus temperature for each thin film model decreased with increasing the C concentration. ...

2016
Mingxing Zhou Guang Xu Haijiang Hu Qing Yuan Junyu Tian Hugo F. Lopez

Red scale defect is known to be mainly caused by net-like Fe2SiO4–FeO. In the present study, the morphology of Fe2SiO4–FeO in a Si-containing steel was investigated by simultaneous thermal analysis, high-temperature laser scanning confocal microscopy, scanning electron microscopy, and energy dispersive spectroscopy. Only liquid Fe2SiO4–FeO can form a net-like morphology. Liquid Fe2SiO4–FeO is c...

2002
Yasuhiko Ohara Teruaki Ishii Hisayoshi Yurimoto Toshitsugu Yamazaki

Two dives of the DSV Shinkai 6500 in the Mariana Trough back-arc basin in the western Pacific sampled back-arc basin mantle exposures. Reports of peridotite exposures in back-arc basin setting are very limited and the lack of samples has hindered our understanding of this important aspect of lithospheric evolution. The Mariana Trough is a slow-spreading ridge, and ultramafic exposures with asso...

M. H. Hamzeh Sayed Mojtaba Sadrameli,

ABSTRACT:A mathematical model for the performance prediction of an industrial glass furnace with six ports on each side was developed. This model comprises of two main sub-models for the combustion chamber and glass-melting tank. The first sub-model consists of the models for the combustion and the heat transfer model including, radiation, convection and conduction. The fuel combustion in a...

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