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effects of shell correction on α decay properties

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作者： e.·苏(e. sue)

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Chinese Physics C 2018年第9期42卷 87-95页

作者： Jing Zhang De-Jun e Hong-Fei Zhang school of Nuclear science and Technology Lanzhou UniversityLanzhou 730000China Joint Department for Nuclear Physics Lanzhou University and Institute of Modern Physics CASLanzhou 730000China

The shell correction effects on the α decay properties of heavy and superheavy nuclei have been studied in a macroscopic-microscopic manner. The macroscopic part is constructed from the generalized liquid drop model（GLDM）, whereas the microscopic part, namely, the shell correction energy, brings about certain effects on the potential barriers and half-lives under a WKB approximation, which is emphasized in this work. The results show that the shell effects play a significant role in the estimation of the α decay half-lives within the actinide *** of the α decay half-lives are then generated for superheavy nuclei, which will provide useful information for future experiments.

关键词： shell correction α decay generalized liquid drop model

Preparation and ferroelectric properties of Bi_(3.4)Ce_(0.6)Ti_3O_(12) thin films grown by sol-gel method

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science China(Technological sciences) 2008年第1期51卷 10-15页

作者： GUO DongYun1, LI MeiYa1, LIU Jun1, YU BenFang1, PeI Ling1, WANG YunBo2, YU Jun2 & YANG Bin2 1 Department of Physics, Wuhan University, Wuhan 430072, China 2 Department of electronic science and Technology, Huazhong University of science and Technology, Wuhan 430074, China Department of Physics Wuhan UniversityWuhan 430072China

We have investigated the preparation and properties of Bi3.4Ce0.6Ti3O12 thin films. The Bi3.4Ce0.6Ti3O12 thin films were fabricated on the Pt/Ti/siO2/si substrates using sol-gel method. The structure and morphology of the films were characterized us- ing X-ray diffraction and atomic force microscopy. The thin films showed a perovskite phase and dense microstructure. The dielectric constant and the dissi- pation factor of the Bi3.4Ce0.6Ti3O12 thin films were about 172 and 0.031 at 1 kHz, respectively. The 2Pr and 2ec of the Bi3.4Ce0.6Ti3O12 thin films were 67.1 μC/cm2 and 299.7 kV/cm, respectively, under an applied field of 600 kV/cm. The Bi3.4Ce0.6Ti3O12 film did not show fatigue up to 4.46×109 switching cycles at a frequency of 1 MHz, and showed good insulating behavior according to the test of leakage current.

关键词： Bi3.4Ce0.6Ti3O12 thin film sol-gel method ferroelectric property dielectric fatigue leakage current

髋臼骨质松质的MRI纹理分析对正常、cam阳性及cam-FAI髋关节的诊断效能

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国际医学放射学杂志 2024年第1期 128-128页

作者： T.Hodgdon R.e.Thornhill N.D.James G.Melkus P.e.Beaulé K.s.Rakhra 彭景

摘要目的比较正常、无症状 cam 阳性及有症状的cam-FAI 的髋关节髋臼软骨下骨 MRI 纹理特征，并评估机器学习模型区分 3 种髋关节类型的准确性。方法对 68 例受试

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Chinese economic structure and sDA Model

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同方期刊数据库

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systems science and systems engineering 2000年第2期10卷 142-148页

作者： CHeN Xi\|kang 1,\ GUO Ju\|e 2 1. Academy of Machemation and systems science, Chinese Academy of science Beijing 100080, China 2. shaanxi Institute of Finance and economics, Xi′an 710061, China

With the rapid economic growth, Chinese economic structure has greatly changed. In this paper we propose a new structural decomposition analysis (sDA) model and use it to analyze the Chinese structure change from 1981 to 1995 on the basis of input\|output tables of China with 18 sectors at current price and at constant price, constructed by us.

关键词： economic structure sDA model input\|output table

OPTICAL PROPeRTIes OF GeO_2 AND Ge NANOCRYsTALs

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Acta Metallurgica sinica(english Letters) 1999年第5期12卷 1164-1165页

作者： Y.H.Zhou 1) ,Y.Y.Feng 2) and H.Y.Lu 2) 1)Department of Physics Nanjing Normal University, Nanjing 210097,China 2)Physics and Ch寁O P T I C A L P R O P e R T I e s O F Ge O2 A N D Ge N A N O C R Y s T A L s Y. H. Zhou1) , Y. Y. Feng2)

he co m pound m aterial of n m size particles Ge O2 si O2 w as synthesied through hydrolysis of si( O C2 H4) and Ge Cl4 . A heat treatm ent w as carried out for the sa m ples at 100 ～1200 ℃in air . Its optical property w as deter mined by U V Vis spectur m . We have found that theabsorption edge of spectru m shifted progressively to longer w avelengths . The quantu m size ef fect of nanocrystals appears because crystals gro w and energy of optical band gap reduces d ueto the influence of te m perature . By the analysis of X ray diffraction w e have observed theprocess in w hich the structure of particles changed fro m disorder into order .

关键词： nano m aterial quantu m size effects

Optimal Heating in Heat-Treatment Process Based on Grey Asynchronous Particle swarm Optimization

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Journal of Iron and steel Research International 2012年第12期19卷 1-7页

作者： LI Jia-dong1, LI Yong1, ZHAO Da-dong2, FU Tian-liang1, WANG Zhao-dong1, WANG Guo-dong1 (1. state Key Laboratory of Rolling and Automation, Northeastern University, shenyang 110004, Liaoning, China 2. school of Materials and Metallurgy, University of science and Technology of Liaoning, Anshan 114051, Liaoning, China) state Key Laboratory of Rolling and Automation Northeastern University Shenyang Liaoning China school of Materials and Metallurgy University of Science and Technology of Liaoning Anshan Liaoning China

To ensure plate heating quality and reduce energy consumption in heat-treatment process, optimal heating for plates in a roller hearth furnace was investigated and a new strategy for heating procedure optimization was developed. During solving process, plate temperature forecast model based on heat transfer mechanics was established to calculate plate temperature with the assumed heating procedure. In addition, multi-objective feature of optimal heating was analyzed. And the method, which is composed of asynchronous particle swarm optimization and grey relational analysis, was adopted for solving the multi-objective problem. The developed strategy for optimizing heating has been applied to the mass production. The result indicates that the absolute plate discharging temperature deviation between measured value and target value does not exceed ± 8 ℃, and the relative deviation is less than ± 0.77%.

关键词： plate optimal heating roller hearth furnaee heat treatment GRA PsO

Know the body: muscle, bone, and palpation essentials

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