Results 91 to 100 of about 14,418,879 (249)

Self-similar collapse with cooling and heating in an expanding universe

, 2003
We derive self-similar solutions including cooling and heating in an Einstein de-Sitter universe, and investigate the effects of cooling and heating on the gas density and temperature distributions.
Abadi, Arnaud, Bertschinger, Bertschinger, Brüggen, Brüggen, Brüggen, Churazov, Chuzhoy, Evrard, Fabian, Fillmore, Helsdon, Kaiser, Kaiser, Peebles, Peterson, Quilis, Reynolds, Ruszkowski, Shuji Uchida, Tadros, Tamura, Tatsuo Yoshida, Voigt, Zakamska   +25 more
core   +2 more sources

Rapid Cooling and Solidification Microstructure of Argon Atomized Ti-48Al Alloy Droplets

Cailiao gongcheng, 2018
An analytical approach was developed to investigate nucleation and growth of Ti-48Al (atom fraction/%) alloy droplets during their flight in an argon atomization process.
BAO Ying, LUO Lin, YU Ze-min, YANG Dong-ye, LIU Na, ZHANG Guo-qing, SUN Jian-fei   +6 more
doaj   +1 more source

Features of Continuous Cooling Transformation (CCT) of High Carbon Steel 72A for Tyre Core Wire

Teshugang, 2008
The continuous cooling transformation (CCT) curves of high carbon steel 72A (0.72C,0.53Mn,0.22Si) for tyre core wire has been measured by THERMECMASTOR-Z thermal simulation machine using thermal dilatation method,and the effect of start cooling ...
王超, 赵刚, 蔡国庆, 程先舟, 欧阳标, 董素梅   +5 more
doaj  

Microstructure Evolution of Sn-35Bi-1Ag/Ni-P/Cu Solder Joints During Post-reflow Cooling and Isothermal Aging

Cailiao gongcheng, 2018
Two kinds of rapid and slow cooling solder joints of Sn-35Bi-1Ag/Ni-P/Cu were prepared by reflow soldering and then cooling in water and oven, respectively. The kinetics of two kinds of layers were investigated using isothermal aging.
LU Han-qiao, LI Yu-long, YU Xiao, LONG Wei-feng, JIANG Jian-feng   +4 more
doaj   +1 more source

Two-Photon Doppler cooling of alkaline-earth-metal and ytterbium atoms

, 2003
A new possibility of laser cooling of alkaline-earth-metal and Ytterbium atoms using a two-photon transition is analyzed. We consider a $^{1}S_{0}$ - $^{1}S_{0}$ transition, with excitation in near resonance with the $^{1}P_{1}$ level.
B. Cagnac, C. Wei, D.A. Manoel, D.S. Weiss, E.A. Curtis, F. Diedrich, Flavio C. Cruz, H. Katori, H.J. Onisto, J. Dalibard, J. Grunert, J. Grunert, K.D. Bonin, M. Kasevich, M.D. Barrett, N. Beverini, P.D. Lett, Reinaldo L. Cavasso Filho, T. Binnewies, T. Kuwamoto, Wictor C. Magno   +20 more
core   +1 more source

Theoretical and simulation study of dispersive electron cooling

Physical Review Accelerators and Beams
In electron cooling, the transverse cooling rate is usually smaller than the longitudinal rate, especially at high energies. By introducing dispersive cooling, it is possible to redistribute the cooling rate between longitudinal and transverse planes ...
He Zhao, Lijun Mao, Meitang Tang, Fu Ma, Xiaodong Yang, Jiancheng Yang   +5 more
doaj   +1 more source

AGN driven perturbations in the intra-cluster medium of cool core cluster ZwCl 2701

, 2016
We present the results obtained from a total of 123 ks X-ray (Chandra) and 8 hrs of 1.4 GHz radio (Giant Metrewave Radio Telescope - GMRT) observations of the cool core cluster ZwCl 2701 (z = 0.214). These observations of ZwCl 2701 showed the presence of
Naik, Sachindra, Patil, Madhav. K., Sonkamble, Satish S., Vagshette, Nilkanth D.   +3 more
core   +1 more source

Influence of Cooling Rate on Microsegregation Behavior of Magnesium Alloys

, 2014
The effect of cooling rate on microstructure and microsegregation of three commercially important magnesium alloys was investigated using Wedge (V-shaped) castings of AZ91D, AM60B, and AE44 alloys.
Md Imran Khan, Ahmad Mostafa, M. Aljarrah, E. Essadiqi, M. Medraj   +4 more
semanticscholar   +1 more source

A Study on Continuous Cooling Transformation of ø170 mm Hot-Rolled Products of Non-Quenching-and-Tempering Steel C38N2

Teshugang, 2014
The dynamic (deforming 50% at 950 °C with deformation rate 5 s-1cooling to ambient) and static (nondeforming, 880 °C, cooling to ambient) continuous cooling transformation (CCT) curves with cooling rate 0.
文成, 蒋波, 杨忠, 王海龙, 刘雅政   +4 more
doaj  

Cooling Rate Correction in Paleointensity Experiments on Archeological and Geological Materials

Geochemistry, Geophysics, Geosystems
Obtaining accurate estimates of the absolute intensity of the past geomagnetic field (paleointensity) is one of the major challenges in paleomagnetic research.
Ron Shaar
doaj   +1 more source