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浏览/检索结果: 共26条,第1-10条 帮助

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Experiment and simulation investigations on W/Cu components prepared by strong confinement thermal explosive welding 期刊论文  OAI收割
NUCLEAR MATERIALS AND ENERGY, 2021, 卷号: 29
作者:  
Lei, Mingzhun;  Yang, Ming;  Ni, Xiaojun;  Ma, Honghao;  Xu, Shuling
  |  收藏  |  浏览/下载:51/0  |  提交时间:2022/01/10
Comparison of simulated backgrounds with in-orbit observations for HE, ME, and LE onboard Insight-HXMT 期刊论文  OAI收割
Astrophysics and Space Science, 2020, 卷号: 365, 页码: 158
作者:  
HXMT
  |  收藏  |  浏览/下载:50/0  |  提交时间:2022/02/08
Insight-HXMT  Geant4 simulation  Background observation  Astrophysics  - Instrumentation and Methods for Astrophysics  Abstract: Insight-HXMT, the first X-ray astronomical satellite in China, aims to reveal new sources in the Galaxy and to study fundamental physics of X-ray binaries from 1 to 250 keV. It has three collimated telescopes, the High Energy X-ray telescope (HE), the Medium Energy X-ray telescope (ME), and the Low Energy X-ray telescope (LE). Before the launch, in-orbit backgrounds of these three telescopes had been estimated through Geant4 simulation, in order to investigate the instrument performance and the achievement of scientific goals. In this work, these simulated backgrounds are compared with in-orbit observations. Good agreements are shown for all three telescopes. For HE, (1) the deviation of the simulated background rate after two years of operation in space is 5 % from the observation  (2) the total background spectrum and the relative abundance of the 67 keV line show long-term increases both in simulations and observations. For ME, (1) the deviation of simulated background rate is within 15 % from the observation, and (2) there are no obvious long-term increase features in the background spectra of simulations and observations. For LE, the background level given by simulations is also consistent with observations. The consistencies of these comparisons validate that the Insight-HXMT mass model, i.e., space environment components and models adopted, physics processes selected, and detector constructions built, is reasonable. However, the line features at 7.5 and 8.0 keV, which are obvious in the observed spectra of LE, are not evident in simulations. This might result from uncertainties in the LE constructions.  
Experimental Investigation on Performance of an Organic Rankine Cycle System Integrated with a Radial Flow Turbine 期刊论文  OAI收割
ENERGIES, 2019, 卷号: 12, 期号: 4, 页码: 20
作者:  
Pan LS(潘利生);  Wang HX;  Pan LS(潘利生)
  |  收藏  |  浏览/下载:41/0  |  提交时间:2019/05/30
Environmental Management System Adoption and the Operational Performance of Firm in the Textile and Apparel Industry of China 期刊论文  OAI收割
SUSTAINABILITY, 2017, 卷号: 9, 期号: 6, 页码: 11
作者:  
Li, Biao;  Wu, Kekun
  |  收藏  |  浏览/下载:20/0  |  提交时间:2018/07/30
Modelling the basic research competitiveness index (br-ci) with an application to the biomass energy field 期刊论文  iSwitch采集
Scientometrics, 2016, 卷号: 108, 期号: 3, 页码: 1221-1241
作者:  
Zhang, Yi;  Kou, Mingting;  Chen, Kaihua;  Guan, Jiancheng;  Li, Yuchen
收藏  |  浏览/下载:48/0  |  提交时间:2019/05/09
New Evidence on Causal Relationship between Approximate Number System (ANS) Acuity and Arithmetic Ability in Elementary-School Students: A Longitudinal Cross-Lagged Analysis 期刊论文  OAI收割
FRONTIERS IN PSYCHOLOGY, 2016, 卷号: 7, 期号: 26, 页码: 1052
作者:  
He, Yunfeng;  Zhou, Xinlin;  Shi, Dexin;  Song, Hairong;  Zhang, Hui
收藏  |  浏览/下载:22/0  |  提交时间:2016/09/05
Experimental investigation on the CO2 transcritical power cycle 期刊论文  OAI收割
ENERGY, 2016, 卷号: 95, 页码: 247-254
作者:  
Pan LS(潘利生);  Li B(李博);  Wei XL(魏小林);  Li T(李腾);  Pan, LS
收藏  |  浏览/下载:40/0  |  提交时间:2016/03/21
爆轰驱动膨胀管性能研究 期刊论文  OAI收割
航空学报, 2016, 卷号: 37, 期号: 3, 页码: 810-816
作者:  
周凯;  汪球;  胡宗民;  姜宗林
收藏  |  浏览/下载:33/0  |  提交时间:2016/12/16
Tribological properties of Mos2 thin coatings under liquid lubricating (EI CONFERENCE) 会议论文  OAI收割
2nd International Conference on Innovation Manufacturing and Engineering Management, IMEM 2012, December 14, 2012 - December 16, 2012, Chongqing, China
Bai Y.; Cao P.
收藏  |  浏览/下载:33/0  |  提交时间:2013/03/25
The objective of this study is to investigate the effect of solid and liquid lubrication on friction and wear performance of selected solid lubricating coatings  comparative experiments have been carried out on magnetron sputtered MoS2 coatings against Si3N4 ball using a ball-on-disk tribo-tester under the conditions of room temperature and different lubrication. Surface morphology of coatings were investigated by atom force microscope (AFM)  and friction coefficient (COF) and wear rate of solid films were also be analyzed. It was shown that the friction is greatly reduced when the solid film is lubricated with oil and grease simultaneously in comparison with single-lubricant lubrication at the start-up or under boundary lubrication conditions. Liquid lubrication causes a dramatic decrease of the wear-ability of the MoS2 coatings. The effect of oil lubrication to the deterioration of wear resistance of MoS2 film was even worse than lubrication grease. (2013) Trans Tech Publications  Switzerland.