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high-energy PROTON IRRADIATION EFFECTS ON GaAs/Ge SPACE SOLAR CELLS

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Acta Metallurgica Sinica(English Letters) 2001年第6期14卷 463-466页

作者： R. Wang (The Key Laboratory of Beam Technology and Materials Modification of Ministry of Education, inst.tute of Low energy Nuclear phys.cs, Beijing Normal University Beijing Radiation Center, Beijing 100875, China) S.D. Yao (Department of Technical phys The Key Laboratory of Beam Technology and Materials Modification of Ministry of Education Institute of Low Energy Nuclear Physics Beijing Normal University Department of Technical phys.cs Peking University

This paper reports the high-energy proton irradiation effects on GaAs/Ge space solar cells. The solar cells were irradiated by protons with energy of 5-20 MeV at fluence ranging from 1×109 to 7×1013 cm-2, and then their electric parameters were measured at AM0. It was shown that the Isc, Voc and Pmax decrease as the proton energy increasing, and the degradation is relative to proton irradiation-induced defect with a level of Ec-0.41 eV in irradiated GaAs/Ge cells.

关键词： Germanium high energy phys.cs Irradiation Protons Semiconducting gallium arsenide

Tb￣(3+) as Fluorescent Probe in the Study of the Interaction of Other Lanthanide Ions with Trichosanthin

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Chemical Research in Chinese Universities 1995年第4期11卷 279-283页

作者： HAO Qiang LI Wen-lian ZHANG Yan YU Gui YANGHong ZHAO Xu YAO Qi-Zhi and LI Qing-shan(Department of Molecular Biofogy and National Laboratory of enzyme engineering,Jiln University,Changchun, 130023)(Changchun inst.tute of phys.cs, Academia Sinica, Cha JILIN UNIV DEPT MOLEC BIOLCHANGCHUN 130023PEOPLES R CHINA JILIN UNIV NATL LAB ENZYME ENGNCHANGCHUN 130023PEOPLES R CHINA ACAD SINICA CHANGCHUN INST PHYSCHANGCHUN 130023PEOPLES R CHINA ACAD SINICA GRAD SCHBEIJING 100039PEOPLES R CHINA

he interaction of lanthanide (Ln￣(3+))ions with trchosanthin(TCS)was investi-gated using Tb￣(3+) as fluorescent probe. The metal-binding sites of the protein were probed by means of adding the Tb￣(3+) into the protein solutions. If other Ln￣(3+) ions exist in the Tb￣(3+) protein complex system, they would compete against.Tb￣(3+) in the binding sites of the protein, and so the fluorescence intensity of Tb￣(3+) decreased,which is called quenching *** quencliing effect is related to the ionic radii of the Ln￣(3+) ions and energy transfer from Tb￣(3+) protein to Ln￣(3+) ions. Based on the ex- perimental results,a schematic of the energy transfer from protein-Tb￣(3+) complex to protein-Ln￣(3+) complex is suggested.

关键词： Trichosanthin energy transfer Protein-Ln￣(3+) complex

Reasons for breaking of chemical bonds of gas molecules during movement of explosion products in cracks formed in rock mass

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International Journal of Mining Science and Technology 2020年第2期30卷 265-269页

作者： Valerii Sobolev Nataliia Bilan Roman Dychkovskyi Edgar Caseres Cabana Adam Smolinski Department of Constraction Geotechnics and GeomechanicsDnipro University of TechnologyDnipro 49005Ukraine Department of General and Structural Geology Dnipro University of TechnologyDnipro 49005Ukraine Department of Underground Mining Dnipro University of TechnologyDnipro 49005Ukraine Scientific Research inst.tute of the Center of Renewable energy and energy Efficiency San Agustin National University ArequipaArequipa PE-04000Peru Central Mining inst.tute Katowice 40-166Poland

The purpose of this study was to develop a phys.co-mathematical model and technique for estimation of chemical bond stability depending on electric field intensity of an external point charge.A hypothesis for a possible phys.co-chemical mechanism of the formation of additional harmful gases in the rock destruction by blasting was *** theoretical basis of the hypothesis is the method of theretical evaluation of bond energy depending on the distance to a point charge,the third Coulomb *** quantum-mechanical model for calculating the electronic terms of molecules makes it possible to solve problems associated with the determination of parameters of molecules under the action of various phys.cal fields on the system under *** model was approved for some diatomic *** discrepancy between the experimental data and calculated data did not exceed 14%,which proves accuracy of the obtained *** model can be used in the field of research into the causes of gas-dynamic phenomena in underground coal mines,in studies of the degree of stability of nanostructured components of coal under phys.cal influences,and in the theoretical design of new compounds and structures in the field of nanomaterial science and nanotechnology.

关键词： Underground coal mine Gas sorption Quantum-mechanical model Rock mass

Generalized Hardy-type tests for hierarchy of multipartite non-locality

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Chinese phys.cs B 2019年第12期28卷 99-104页

作者： Fei Yang Yu Yuan Wen-Lu Lin Shu-Ao Liao Cheng-Jie Zhang Qing Chen School of phys.cs and Astronomy Yunnan UniversityKunming 650500China Key Laboratory of Quantum Information of Yunnan Province Kunming 650500China College of phys.cs Optoelectronics and EnergySoochow UniversitySuzhou 215006China

We propose a family of Hardy-type tests for an arbitrary n-partite system, which can detect different degrees of nonlocality ranging from standard to genuine multipartite non-locality. For any non-signaling m-local hidden variable model,the corresponding tests fail, whereas a pass of this type of test indicates that this state is m non-local. We show that any entangled generalized GHZ state exhibits Hardy’s non-locality for each rank of multipartite non-locality. Furthermore, for the detection of m non-localities, a family of Bell-type inequalities based on our test is constructed. Numerical results show that it is more efficient than the inequalities proposed in [phys. Rev. A 94 022110(2016)].

关键词： Hardy paradox Bell non-locality multipartite non-locality

冷旋U-6.5Nb合金再结晶晶粒长大的实验研究

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稀有金属材料与工程 2010年第10期39卷 1815-1819页

作者：张新建汪小琳罗超周南强 China Acad Engn phys Mianyang 621900 Peoples R China

采用冷旋加工-退火工艺细化U-6.5Nb合金晶粒组织,研究旋压变形率、退火温度及退火时间对再结晶后晶粒组织的影响。结果表明,在研究范围内,旋压变形率对晶粒尺寸没有显著影响,随退火温度的升高和退火时间的延长,晶粒尺寸不断长大。在700,... 详细信息

采用冷旋加工-退火工艺细化U-6.5Nb合金晶粒组织,研究旋压变形率、退火温度及退火时间对再结晶后晶粒组织的影响。结果表明,在研究范围内,旋压变形率对晶粒尺寸没有显著影响,随退火温度的升高和退火时间的延长,晶粒尺寸不断长大。在700,800和900℃保温过程中的晶粒长大指数分别为0.47,0.31和0.34,晶粒长大激活能为100.4kJ/mol,表明U-6.5Nb合金的晶粒长大受Nb原子的扩散控制。

关键词：合金再结晶晶粒长大指数实验研究 Grain Growth 退火温度退火时间晶粒组织晶粒尺寸变形率旋压退火工艺扩散控制激活能为温度及原子升高结果加工过程保温

Non-Invasive Measurements of Thickness of Superconductor Films by Using Two-Resonant-Mode Rutile Resonator

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Chinese phys.cs Letters 2010年第8期27卷 203-206页

作者： JUNG Ho Sang YANG Woo Il LEE Jae Hun SOHN Jae Min CHOO Kee Nam KIM Bong Goo LEE Sang Young Department of phys.cs and Center for Wireless Transmission Technology Konkuk University Seoul 143-701 Korea Research Reactor Engineering Division Korea Atomic energy Research inst.tute Daejeon 305-600 Korea

The film thickness should be known for extrazting the intrinsic surface resistance from the effective surface resistance as measured by using the dielectric resonator method. Thicknesses of 70 nm to 360 nm are measured for YBa2 Cu3 O7-δ films in a non-invasive way by using the two-resonant-mode dielectric resonator （TDR） method. A futile resonator with the respective resonant frequencies of 15.25-15.61 GHz and 15.10-15.37 GHz for the TE021 and the TE012 modes is used for this purpose. Differences between the values as measured by using the TDR technique and those measured by using a step profilometer appear to be less than 3%, which is smaller than the previous value of 5% as measured by using a 8. 6 GHz single-resonance mode futile resonator [Lee et al. J. Korean phys. Soc. 54（2009）1619]. Merits of using the TDR method are discussed.

关键词： THICKNESS measurement SUPERCONDUCTORS THIN films RUTILE DIELECTRIC resonators PROFILOMETER ELECTRIC resistance SURFACES (Technology)

Electrical Conductivity and Infra Red of CaTiO_3 Doped with CuO

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Journal of Materials Science & Technology 2001年第6期17卷 667-669页

作者： F.F.Hammad and M.Sh.Khalil Department of Inorganic Chemistry, National Research Centre, Dokki, Cairo, Egypt A. H. Salama Department of phys.cal Chemistry, National Research Centre, Dokki, Cairo, Egypt [Manuscript rece Natl Res Ctr Dept Inorgan Chem Cairo Egypt Natl Res Ctr Dept Phys Chem Cairo Egypt

The electrical conductivity of pure CaTiO3 and that containing 0.5~5.0 mole fraction CuO as dopant were measured in the temperature range 291~773 K. The conductivity values varied as a function of temperature and dopant concentration. The activation energy in the lower temper- ature range depended on the impurity content while in the high temperature range it indicated a value of energy gap width. The infrared absorption spectra in the range of 100~4000 cm-1 revealed the presence of two main bands at 340 and 570 cm-1 which were assigned to Ti06 oc- tahedral normal mode. Bands in the range of 106~270 cm-1 were due to the vibration of anion TiO3-2. Some bands were observed at higher values due to the presence of lattice imperfections. There was a slight shift in band position with increasing dopant concentration which favors the formation of orthorhombic modification.

关键词： Electrical Conductivity and Infra Red of CaTiO3 Doped with CuO TiO In

Electrocoagulation efficiency probed using electrochemical impedance spectroscopy

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CHINESE JOURNAL OF CHEMICAL ENGINEERING 2024年第11期75卷 266-273页

作者： Aarfane, Abdellatif Bensemlali, Meryem Elmelouky, Abderrahmane Hatimi, Badreddine Zaim, Soumia Jaffrezic-Renault, Nicole Baraket, Abdoullatif Errachid, Abdelhamid Mohamed, Monkade Nasrellah, Hamid Univ Chouaib Doukkali Higher Sch Educ & Training El Jadida 999055 Morocco Univ Chouaib Doukkali Fac Sci Lab Organ Bioorgan Chem & Environm El Jadida 999055 Morocco Univ Chouaib Doukkali Fac Sci Lab Phys Condensed Matter LPCM El Jadida 999055 Morocco Univ Lyon Inst Analyt Sci UMR 5280 F-69100 Villeurbanne France

In order to treat the polluted discharge from El-Jadida, Morocco, a method of electrocoagulation using aluminum electrodes was used. This approach was coupled for the first time with high-frequency electrochemical impedance spectroscopy (EIS). Significant pollutant abatement was observed after 30 min, at a current density of 190.5 A center dot m-2, with a specific electrical energy consumption of 1.58 kW center dot h (per gram of eliminated carbon organic demand (COD)) and specific aluminum consumption of 0.11 g center dot g-1: electrocoagulation proved to be particularly effective, achieving 85.7% elimination of COD and a decrease of total dissolved solid (TDS) and electrical conductivity (EC) levels from 2430 mg center dot L-1 to 1773 mg center dot L-1 and from 4230 m S center dot cm-1 to 3210 m S center dot cm-1 , respectively. As for USP and ORP, they decreased from 2.5 to 1.87 and from 244.6 mV to 51 mV, respectively. The inductance of the electrocoagulation system measured by EIS was modeled through an electrical equivalent circuit. When the applied intensity increased, the coagulation resistance increased suddenly when the applied electrical current reached 0.2 A (current density: 95.2 A center dot m-2). At this point, the rate of COD abatement versus SEEC (specific electrical energy consumption decreases which shows that the EC process should be combined with another process to improve its efficiency, such as ultrasound. (c) 2024 The Chemical Industry and Engineering Society of China, and Chemical Industry Press Co., Ltd. All rights are reserved, including those for text and data mining, AI training, and similar technologies.

关键词： Wastewater treatment Electrocoagulation process Aluminum electrodes Electrochemical impedance spectroscopy Coagulation resistance COD abatement rate

Comprehensive evaluation of high-steep slope stability and optimal high-steep slope design by 3D phys.cal modeling

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International Journal of Minerals,Metallurgy and Materials 2015年第1期22卷 1-11页

作者： Xing-ping Lai Peng-fei Shan Mei-feng Cai Fen-hua Ren Wen-hui Tan School of energy Engineering Xi'an University of Science and Technology School of Civil and Environmental Engineering University of Science and Technology Beijing Key Laboratory of the Ministry of Education of China for Efficient Mining and Safety of Metal Mines University of Science and Technology Beijing

high-steep slope stability and its optimal excavation design in Shuichang open pit iron mine were analyzed based on a large 3D phys.cal simulation technique. An optimal excavation scheme with a relatively steeper slope angle was successfully implemented at the northwest wall between Nos. 4 and 5 exploration lines of Shuichang Iron Mine, taking into account the 3D scale effect. The phys.ico-mechanical properties of rock materials were obtained by laboratory tests conducted on sample cores from exploration drilling directly from the iron mine. A porous rock-like composite material was formed for the model, and the mechanical parameters of the material were assessed experimentally;specifically, the effect of water on the sample was quantitatively determined. We adopted an experimental setup using stiff modular applied static loading to carry out a visual excavation of the slope at a random depth. The setup was equipped with acous-tic emission （AE） sensors, and the experiments were monitored by crack optical acquirement, ground penetrating radar, and close-field pho-togrammetry to investigate the mechanisms of rock-mass destabilization in the high-steep slope. For the complex study area, the model re-sults indicated a clear correlation between the model＇s destabilization resulting from slope excavation and the collected monitoring informa-tion. During the model simulation, the overall angle of the slope increased by 1-6 degrees in different sections. Dramatically, the modeled excavation scheme saved over 80 million tons of rock from extraction, generating enormous economic and ecological benefits.

关键词： slope stability analysis excavation design three-dimensional models phys.cal simulation