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Enterohaemolysin production and verotoxin genes in Escherichia coli strains isolated from neonatal calves in India

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Asian Pacific Journal of Tropical Medicine 2009年第4期2卷 1-5页

作者： Diganta pan Ashok.k.mar Bhatia k.N.Bhilegaonk.r Department of Microbiology and Immunology College of Veterinary Science and Animal HusbandryMathura-281 001UPIndia Indian Veterinary Research Institute IzatnagarU.P.243122India

Objective:To screened all haemolytic strains of Escherichia coli(***) for the presence of verotoxin genes and speculate the association between enterohaemolysin production and presence of verotoxin ***: A total 176 of *** strains of 64 serogroups isolated from neonatal calves were selected and screened for alpha -haemolysin and enterohaemolysin production on sheep blood agar and 5%washed sheep blood *** types of haemolytic strains were further characterized by PCR for presence of Verotoxin gene(VT1 and VT2) and confirmed by verocell cytotoxicity ***:Among 27 enterohaemolytic positive strains,19(70. 37%) strains were found positive for presence of verotoxins(VTs) gene and verocell cytotoxicity assay. Whereas 34 alpha-haemolysin strains were found negative for *** strains of *** were found VTs negative but Ehx ***:The close association between enterohaemolysin production and presence of verotoxin genes mak.s it useful epidemiological mark.r for rapid screening of Verotoxic *** but this phenotypic mark.r for screening of verotoxigenic Escherichia coli(VTEC) alone may raise a question in animal.

关键词： Enterohaemolysin Alpha haemolysin Verotoxigenic Escherichia coli Calves India

Structure and Combustion Characteristics of Methane/Air Premixed Flame under the Action of Wall

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Energy Engineering 2021年第4期118卷 1135-1154页

作者： Feiyang Li Jianfeng pan Chenxin Zhang Evans k.Quaye Xia shao School of Energy and Power Engineering Jiangsu UniversityZhenjiang212013China

In order to obtain the combustion characteristics of the CH4/Air premixed flame under the action of the wall interaction,a study on the impact of the jet flame on the wall at different separation distances was carried *** separation distance from the burner outlet to the lower surface of the wall is changed and the flame structure is obtained through *** temperature,velocity and reaction rate are obtained through numerical simulation,and the law of flame characteristics change is obtained through *** results show that as the separation distance increases,the premixing cone inside the flame gradually changes from a horn shape to a complete cone shape and the length of the premixing cone profile ***,the peak.temperature and velocity of the mixture in the axial direction gradually increase,and the temperature and velocity in the radial direction first increase and then *** temperature gradient and velocity reach the maximum when the separation distance is 11 *** peak. of reactants(CH_(4))net reaction rate intermediate products(CO)and products(CO_(2),H_(2)O)on the axis and the axial distance corresponding to the peak. increase *** chemical reaction rate near the wall also gradually decreases with the increase of the separation distance.

关键词： Flame-wall interaction separation distance flame structure air flow temperature flow velocity reaction rate

Machining Robot with Vibrational Motion and 3D Printer-lik. Data Interface

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International Journal of Automation and computing 2018年第1期15卷 1-12页

作者： Fusaomi Nagata k.igo Watanabe Mak. k. Habib Department of Mechanical Engineering Faculty of Engineering Tokyo University of Science Yamaguchi 1-1-1 Daigaku-Dori Sanyo-Onoda 756-0884 Japan Department of Intelligent Mechanical Systems Division of Industrial Innovation Sciences Graduate School of Natural Science and Technology Okayama University 3-1-1 Tsushima-naka Kita-ku Okayama 700-8530 Japan American University 113 Kasr E1 Eini Street Cairo 11511 Egypt

In this paper, a vibration motion control is proposed and implemented on a foamed polystyrene machining robot to suppress the generation of undesirable cusp mark., and the basic performance of the controller is verified through machining experiments of foamed polystyrene. Then, a 3 dimensional （3D） printer-lik. data interface is proposed for the machining robot. The 3D data inter- face enables to control the machining robot directly using stereolithography （STL） data without conducting any computer-aided man- ufacturing （CAM） process. This is done by developing a robotic preprocessor that helps to remove the need for the conventional CAM process by directly converting the STL data into cutter location source data called cutter location （CL） or cutter location source （CLS） data. The STL is a file format proposed by 3D systems, and recently is supported by many computer aided design （CAD）/CAM soft- waxes. The STL is widely used for rapid prototyping with a 3D printer which is a typical additive manufacturing system. The STL deals with a triangular representation of a curved surface geometry. The developed 3D printer-lik. data interface allows to directly control the machining robot through a zigzag path, rectangular spiral path and circular spiral path generated according to the information included in STL data. The effectiveness and usefulness of the developed system are demonstrated through actual machining experiments.

关键词： Computer integrated manufacturing machining robot computer aided design (CAD)/computer-aided manufacturing(CAM) cutter location (CL) data vibrational motion stereolithography (STL) data preprocessor 3 dimensional (3D) printer-lik.data interface.

Spectral parameter-based models for leaf potassium concentration estimation in Ping'ou hybrid hazelnut

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Journal of Arid Land 2020年第6期12卷 1083-1092页

作者： ZHAO shanchao pan Cunde College of Forestry and Horticulture Xinjiang Agricultural UniversityUrumqi 830052China

Ping′ou hybrid hazelnut is produced by cross cultivation and is widely cultivated in northern China with good development *** on a field experiment of fertilizer efficiency,the leaf spectral reflectance and leaf potassium(k.concentration were measured with different quantities of k.fertilizer applied at four fruit growth stages(fruit setting stage,fruit rapid growth stage,fruit fat-change stage,and fruit near-maturity stage)of Ping′ou hybrid hazelnut in *** parameters that were significantly correlated with leaf k.concentration were selected using Pearson correlation analysis,and spectral parameter estimation models of leaf k.concentration were established by employing six different modelling methods(exponential function,power function,logarithmic function,linear function,quadratic function,and cubic function).The results indicated that at the fruit setting period,leaf k.concentration was significantly correlated with Dy(spectra slope of yellow edge),Rg(reflectance of the green peak.position),λo(red valley position),SDb(blue edge area),SDr/SDb(where SDr represents red edge area),and(SDr–SDb)/(SDr+SDb)(Pk.concentration with Dy,Rg,SDb,Rg/Ro(where Ro is the reflectance of the red valley position),and(Rg–Ro)/(Rg+Ro)at the fruit rapid growth stage(Pk.concentration with Rg,Ro,RNIR/Green,and RNIR/Blue were obtained at the fruit fat-change period(Pk.concentration showed significant correlations with Dr,Rg,Ro,SDy(yellow edge area),and SDr at the fruit near-maturity stage(Pk.concentration with highest fitting degree(R2)values at the four fruit growth stages was *** findings in this study demonstrated that it is feasible to estimate leaf k.concentration of Ping′ou hybrid hazelnut at the various phenological stages of fruit development by establishing

关键词： leaf k.concentration spectrum cubic function regression models fruit growth stages Ping'ou hybrid hazelnut

Equivalent and Nonequivalent Barotropic Modes for Rotating Stratified Flows

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Chinese Annals of Mathematics,Series B 2012年第2期33卷 247-258页

作者： man JIA Senyue LOU Fei HUANG Faculty of Science Ningbo UniversityNingbo 315211ZhejiangChina Department of Physics Shanghai Jiao Tong UniversityShanghai 200240China School of Mathematical Sciences Fudan UniversityShanghai 200433China Physical Oceanography Laboratory Ocean University of ChinaQingdao 266003ShandongChina

All the possible equivalent barotropic (EB) laminar solutions are firstly explored,and all the possible non-EB elliptic circulations and hyperbolic laminar modes of rotating stratified fluids are discovered in this *** EB circulations (including the vortex streets and hurricane lik. vortices) possess rich structures,because either the arbitrary solutions of arbitrary nonlinear Poisson equations can be used or an arbitrary two-dimensional stream function is revealed which may be broadly applied in atmospheric and oceanic dynamics,plasma physics,astrophysics and so *** discovery of the non-EB modes disproves a k.own conjecture.

关键词： Rotating stratified flows Equivalent barotropic modes Nonequivalentbarotropic modes

1766-2000年黄河上中游汛期径流量波动特征及其与PDO关系

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地理学报 2018年第11期73卷 2053-2063页

作者：潘威郑景云满志敏云南大学历史地理研究所昆明650091 中国科学院地理科学与资源研究所中国科学院陆地表层格局与模拟重点实验室北京100101 复旦大学历史地理研究中心上海200433

利用清代黄河上中游3个站点的志桩尺寸记录,通过建立回归模型反演了1766-1911年的逐年径流量,重建了兰州、青铜峡和三门峡1766-2000年的逐年汛期径流量序列,再结合河源段唐乃亥站1766-2000年的逐年径流量,构建了河源—上游—中游4个站... 详细信息

利用清代黄河上中游3个站点的志桩尺寸记录,通过建立回归模型反演了1766-1911年的逐年径流量,重建了兰州、青铜峡和三门峡1766-2000年的逐年汛期径流量序列,再结合河源段唐乃亥站1766-2000年的逐年径流量,构建了河源—上游—中游4个站点的径流量序列,这是目前利用历史文献记录能够获得的最为清晰的黄河径流量曲线。研究显示,19世纪中期出现在黄河下游的沉重"河患"是由青铜峡—三门峡河段内的径流量突变所致,而20世纪20年代的枯水时段从河源段到中游段都存在,但其不是突变造成。同时,研究也揭示出太平洋年代际振荡(PDO)与黄河上中游径流量在年代际尺度上存在着阶段性的反相位关系,20世纪前期和中期,8~16年尺度上在4个站点的径流量都有反相位关系出现;在19世纪30-50年代,PDO与流量在4~6年尺度上的反相位关系在兰州和三门峡断面都较为明显。交互小波分析显示,PDO与黄河上中游汛期水量在8~16年尺度上存在着较为明显的反相关关系,但只存在于三门峡和兰州断面。这一关系也许表明,黄河上中游产流区的夏季降雨量与PDO的关系具有较为明显的时间和空间差异性。

关键词：黄河气候变化 PDO 径流量

A Note on Bogomolov-Type Inequality for Semi-stable Parabolic Higgs Bundles

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Communications in Mathematics and Statistics 2022年第2期10卷 287-298页

作者： Changpeng pan School of Mathematical Sciences University of Science and Technology of ChinaHefei 230026People’s Republic of China

In this paper,we prove a Chern number inequality for Higgs bundles over some k.hler *** an application,we get the Bogomolov inequality for semi-stable parabolic Higgs bundles over smooth projective varieties.

关键词： Parabolic Higgs bundle Semi-stable Bogomolov inequality

Cooper Molecules: Second Pairing of Cooper Pairs in Gapless Superconductor CeCoIn5

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Chinese Physics Letters 2019年第10期36卷 67-71页

作者： Jiang Hong man Ze Cheng School of Physics Huazhong University of Science and TechnologyWuhan 430074

We establish a quantum field theory of phase transitions in gapless superconductor *** is found that uniform Cooper pair gases with pure gradient interactions with negative coefficient can undergo a Bardeen–Cooper–Schrieffer(BCS)condensation below a critical *** the BCS condensation state,bare Cooper pairs with opposite wave vectors are bound into Cooper molecules,and uncoupled bare Cooper pairs are transformed into a new k.nd of quasiparticle,i.e.,the dressed *** Cooper molecule system is a condensate or a superfluid,and the dressed particle system is a normal *** critical temperature is derived *** critical temperature of the superconductor CeCoIn5 is obtained to be Tc=2.289 k.which approaches the experimental *** transition from the BCS condensation state to the normal state is a first-order phase transition.

关键词： Cooper superconductor critical

Design of 32-bit differential paired eFuse OTP memory in a form of two-dimensional array

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Journal of Central South University 2012年第12期19卷 3484-3491页

作者： k.M Yoon-k.u JANG Ji-hye YOON Geon-soo LEE Dong-hoon HA man-yeong HA pan-bong k.M Young-hee Department of Electronic Engineering Changwon National University9 Sarim-DongChangwon 641-773Korea

A differential paired eFuse OTP(one-time programmable)memory cell which can be configured into a 2D(two-dimensional)eFuse cell array was *** sensible resistance of a programmed eFuse link.is a half smaller than that of the single-ended counterpart and BL datum can be sensed without a reference *** this 2D array of differential paired eFuse OTP memory cells,we design a 32-bit eFuse OTP memory *** use a sense amplifier based D F/F circuit as the BL(bit-line)SA(sense amplifier)and design a sensing margin test circuit with a variable pull-up *** is confirmed by the function test that the designed 32-bit OTP memory IP functions normally on 30 sample dies.

关键词： eFuse one-time programmable memory 2-dimensional array