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PAssAGe OF PARTICLes THROUGH MATTeR

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Chinese Physics C 2016年第10期40卷 441-455页

作者： H.Bichsel D.e.Groom s.R.Klein University of Washington LBNL

Revised August 2015 by H. Bichsel （University of Washington）, D.e Groom （LBNL）, and s.R. Klein （LBNL）. This review covers the interactions of photons and electrically charged particles in matter, concentrating on energies of interest for high-energy physics and astrophysics and processes of interest for particle detectors （ionization, Cherenkov radiation, transition radiation）.

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spatial avoidance of patches of polluted chernozem soils by soil invertebrates

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Insect science 2009年第1期16卷 99-105页

作者： Konstantin B. Gongalsky svetlana A. Belorustseva Daria M. Kuznetsova Alexander v. Matyukhin Lyubov A. Pelgunova Fyodor A. savin Alexander s. shapovalov A.N. severtsov Institute of ecology and evolution Russian Academy of Sciences Moscow Department of Invertebrate Zoology Faculty of Biology Moscow State University Moscow Department of Biogeography Faculty of Geography Moscow State University Moscow and 4Belogorye Nature Reserve Monastyrsky pereulok Borisovka Belgorod Region Russian Federation

soil invertebrates and heavy metal concentrations are heterogeneously distributed in the soil of steppe plots surrounding an iron mining enterprise in southern Russia. This study assesses whether patches of high soil invertebrate abundance coincide with patches of low concentrations of pollutants. For this aim, spatial analysis by distance indices （sADIe） was applied. Three valleys in Belogorye Nature Reserve were chosen. One valley faced the tailing pond to the north and the other two faced south-east or south-west. Two sampling plots were chosen in each valley, 60 m apart from each other. On every plot 16 soil cores were collected from a grid of 4 × 4 units with a 5-m distance between each sample unit. each soil core had an area of 76 cm2 and was 12-15 cm deep. All macroinvertebrates were hand-sorted and identified to family. Abundance of soil invertebrates was not controlled by patches of metal concentration in the soil. epigaeic groups, like insects and other invertebrates inhabiting the litter layer, were not directly associated with local parameters of the soil. On the contrary, belowground invertebrate abundance （elaterid larvae and earthworms） showed significant dissociation with some heavy metal （Fe, Pb, Zn） concentrations in the soil. The patchiness of soil pollution may act as a leading factor ofbelowground soil invertebrate distribution. The spatial structure of animal populations in industrially transformed soils needs further research.

关键词： invertebrates macrofauna sADIe soil pollution spatial distribution

Dynamic Diagrams Post Processing software Tools for simulation Analysis of spacecraft Docking Dynamics

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Journal of Mechanics engineering and Automation 2014年第4期4卷 291-304页

作者： Andrey v. Yaskevich Ivan e. Chernyshev space electromechanical system Division Rocket Space Corporation "Energia " Korolev 141070 Russia

Realistic 3D-animation is used in all motion simulation systems of mechanisms and other mechanicals systems. It provides a high-quality illustration of time processes, but it has a weak capability for analysis of their dynamics, for simultaneous display of contact interaction and functioning of mechanisms of different motion types. A spacecraft docking is characterized by a complex contact interaction of docking assemblies with mechanisms and devices of different motion types. Integration and time synchronization of the animation, plots and numerical values greatly facilitates the understanding of dynamics features of these processes. Usage of simple wireframe graphical models allows displaying all contact points. A changing of the set of graphical elements focuses attention on major events of a simulated process. Graphical models developed with consideration of these features and used for spacecraft docking simulation analysis are called dynamic diagrams and described in this paper.

关键词： spacecraft docking math modelling computer graphics.

THe sPeCTRALITY DeCIsION PROBLeM

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Analysis in Theory and Applications 1998年第3期14卷 73-84页

作者： e.v.Dubrova J.C.Muzio University of victoria Canada

An efficient algorithm for deciding whether a given integer vector is the spectrum of some Boolean function is presented. The algorithm performs a step-by-step spectral decomposition of the input vector and checks at each step a set of necessary conditions for spectrality for the resulting vectors. The algorithm concludes that the input vector cannot lead to a valid Boolean function as soon as a vector not satisfying the conditions is found, which, as proved in the paper, for almost all cases happens after the first step of the decomposition.

关键词： THe sPeCTRALITY DeCIsION PROBLeM

CaMoO_4:Dy^(3+),K^+ near White Light emitting Phosphor:structural,Optical and Dielectric Properties

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Journal of Materials science & Technology 2013年第7期29卷 633-638页

作者： s.K.sharma s.Dutta s.som P.s.Mandal Department of Applied Physics Indian School of MinesDhanbad 826004India

Undoped, Dy^3＋ doped and Dy^3＋, K^＋ codoped calcium molybdate phosphors have been synthesized by solid-state reaction method. X-ray diffraction studies reveal the tetragonal structure of the prepared phosphors having crystallite size 15-50 nm. scanning electron microscopy （seM） studies reveal the morphology and crystallite size of the prepared phosphors. Photoluminescence studies indicate that there are blue and yellow emissions at 489 and 576 nm, respectively corresponding to Dy^3＋ ion. The introduction of K＋ ion significantly influences the blue and yellow emissions which causes the near white light emission from this codoped phosphor. The intense absorption peak of the codoped phosphor at 210 nm is attributed to the band gap and a shoulder at 240 nm appears due to charge transfer from oxygen ions to neighbouring molybdenum ions. The band gap of the codoped phosphor is calculated as 5.5 ev from the absorption studies. The dielectric properties such as permittivity and dielectric loss are studied as a function of *** The authors are thankful to the Department of science and Technology, New Delhi （Government of India） for funding this work under the Project sR/FTP/Ps-087/2010.

关键词： X-ray diffraction Photoluminescence Absorption Dielectric

FAsHION TReNDs IN DesIGN OF FeMALe CLAssICAL JACKeTs

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武汉科技学院学报 2004年第6期17卷 117-122页

作者： v e.Kuzmichev O.N.kolodeznaya Wuhan Univerity of science and engineering WUse P.R.China.Ivanovo State Textile AcademyIGTARussiaWuhan Univerity of Science and Engineering WUSEP.R.China.Ivanovo State Textile AcademyIGTARussia

The mathematical description of clothes shape change is made by the example of a european female classical jacket. As objects of research graphic representations of female classical jackets have been taken from women's fashion magazines of the middle XX-the beginnings of XXI centuries published in France, Germany, Russia, Poland,Italy, U.s.A. For visual identification of female jacket models of the different time we product the nomenclature of the quantitative parameters of the internal form with use of the chosen more important information points is developed,Revealing of objectively existing laws of jacket form constructions is carried out with use of correlative and regressive analyses. The system of a few linear equations for the description, constructions and comparisons of jacket form characteristics of the researched periods are received. Graphic forms of representation of possible zones for information points moving are offered. Using quantitative information about this parameters changed in the period with 1955 on 2002 received by means of our special instrument we proved the constant cyclic character of change them. Knowledge the common rules of change of the chosen form parameters allow us distributing the established lows to 10th of XXI century as a possible perspective direction in fashion trends for designers and sewing industry. Due to establishing rules that took place in forming european female jacket during latest 50 years almost we offered the instrument for predicting the main possible changes in composite-structural construction until lOth of XXI century。

关键词：女性服装夹克设计流形趋势

Characterization of CdMnTe radiation detectors using current and charge transients

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Journal of semiconductors 2013年第7期34卷 19-25页

作者： R.Rafiei M.I.Reinhard A.sarbutt s.Uxa D.Boardman G.C.Watt e.Belas K.Kim A.e.Bolotnikov R.B.James Australian Nuclear science and Technology Organisation Lucas HeightsNSW2234Australia school of electrical Electronic and Computer EngineeringThe University of Western AustraliaCrawleyWA6009Australia Faculty of Mathematics and Physics Institute of PhysicsCharles UniversityKe Karlovu 5Prague 2CZ-12116Czech Republic Brookhaven National Laboratory UptonNY 11973USA Department of Radiologic science Korea UniversitySeoul136-703Korea

Charge transport characteristics of Cd_（0.95）Mn_（0.05）Te：In radiation detectors have been evaluated by combining time resolved current transient measurements with time of flight charge transient *** shapes of the measured current pulses have been interpreted with respect to a concentration of net positive space-charge, which has resulted in an electric field gradient across the detector *** the recorded current pulses the charge collection efficiency of the detector was found to approach 100%.From the evolution of the charge collection efficiency with applied bias,the electron mobility-lifetime product ofμ_nτ_n =（8.5±0.4）×10^（-4） cm^2/v has been *** electron transit time was determined using both transient current technique and time of flight measurements in the bias range of 100-1900 *** the dependence of drift velocity on applied electric field the electron mobility was found to beμ_n =（718±55） cm^2/（v·s） at room temperature.

关键词： radiation detector CdMnTe CMT detector fabrication transient current technique time of flighttechnique

‘黔核7号’去皮种仁多酚含量、抗氧化活性与多酚代谢关键酶活性的关系分析

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食品科学 2024年第4期45卷 10-17页

作者：姜熠潘学军洪艳阳史斌斌李雪张文娥贵州大学农学院贵州省果树工程技术研究中心贵州贵阳550025 贵州省农业科学院果树科学研究所贵州贵阳550025

本实验以优良泡核桃品种‘黔核7号’为对象,研究去皮种仁发育过程中总酚、总黄酮、单体酚含量和酚类代谢关键酶活性的变化规律以及与体外抗氧化活性能力的关系。结果表明:种仁中总酚、总黄酮含量及抗氧化活性在发育过程中均呈上升趋势,... 详细信息

本实验以优良泡核桃品种‘黔核7号’为对象,研究去皮种仁发育过程中总酚、总黄酮、单体酚含量和酚类代谢关键酶活性的变化规律以及与体外抗氧化活性能力的关系。结果表明:种仁中总酚、总黄酮含量及抗氧化活性在发育过程中均呈上升趋势,于果实成熟期达到最大值,总酚、总黄酮含量分别为0.05 mg/g(没食子酸当量,以鲜质量计)和0.03 mg/g(芦丁当量,以鲜质量计);果实成熟期铁离子还原能力(ferric ion reducing antioxidant power,FRAP)为0.019 mmol/g,1,1-二苯基-2-苦肼基(1,1-diphenyl-2-picrylhydrazyl,DPPH)自由基、2,2’-联氮双(3-乙基苯并噻唑啉-6-磺酸)(2,2’-azino-bis(3-ethylbenzothiazoline-6-sulfonic acid),ABTs)阳离子自由基半清除浓度分别为43.57 mg/mL和16.86 mg/mL。在种仁中鉴定出8种单体酚,各单体酚含量变化差异大,总体来看,在成熟后期都有所降低,但平均含量以丁香酸最高,儿茶素次之,阿魏酸最低。总酚、没食子酸、咖啡酸、阿魏酸、槲皮素含量与FRAP呈正相关,儿茶素、丁香酸、芦丁含量与DPPH自由基、ABTs阳离子自由基清除能力呈正相关。代谢酶活性分析表明,伴随种仁的发育分支酸变位酶(chorismate mutase,CM)、分支酸合成酶(chorismate synthase,Cs)、苯丙氨酸解氨酶(phenylalanine ammonia lyase,PAL)活性在种仁充实期达到最高,肉桂酸4-羟化酶(cinnamate 4-hydroxylase,C4H)活性变化规律呈“N”字型,并在成熟后期达到最大,4-香豆酸-Co A连接酶(4-coumarate coenzyme A ligase,4CL)、查耳酮合酶(chalcone synthase,CHs)和查耳酮异构酶(chalcone isomerase,CHI)活性快速下降后在成熟期略有回升;总酚、没食子酸、咖啡酸、阿魏酸、槲皮素与CM、PAL、C4H呈正相关,与Cs、4CL、CHs、CHI呈负相关,丁香酸、芦丁与Cs呈正相关。综上所述,泡核桃‘黔核7号’去皮种仁在完熟期多酚类物质含量、抗氧化性都较高。本研究可为泡核桃种仁食品性功能开发提供理论依据。

关键词：泡核桃种仁多酚类化合物抗氧化活性多酚代谢酶

Analysis of Rainfall variability Using Remote sensing and GIs in North Central Nigeria

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Atmospheric and Climate sciences 2019年第2期9卷 191-201页

作者： O. Ideki v. e. Weli Department of Geography and environmental Management University of Port Harcourt Port Harcourt Nigeria

The importance of rainfall variability in successfully understanding the dynamics of climate change in any region cannot be overemphasized. This study examines rainfall variability in the North Central region including the Federal Capital Territory Abuja using remote sensing and geographic information system (GIs) application. The study employed satellite data basically from near real time data of Moderate Resolution Imaging spectroradiometer (MODIs). Thereafter, the point data of rainfall was clipped to the shape file of Nigeria Boundary and interpolation using Inverse Distance Weight (IDW) was done to generate rainfall spatial maps from 2000-2017. The result reveal high temporal variation in rainfall particularly Niger, Plateau, Benue and Nassarawa states. The study therefore recommends close monitoring of periodic pattern of rainfall characteristics in the region by the Nigerian meteorological agency and to encourage farmers into drought tolerant and irrigation farming.

关键词： Rainfall variability Climate Change Remote sensing GIs North Central Nigeria