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Finite Size Effect for the First-Order Phase Transition of the Three-Dimensional b.ume-Capel Model on a Cellular Automaton

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Chinese Physics Letters 2006年第9期23卷 2526-2529页

作者： N. Seferoglu A. Oezkan b. Kutlu Gazi Universitesi Fen Bilimleri Enstitiisfi Fizik Anabilim Dah Ankara Turkey Gazi Universitesi Fen Edebiyat Fakiiltesi Fizik B61iimii 06500 Teknikokullar Ankara Turkey

The first-order phase transition of the three-dimensional b.ume-Capel model is investigated using the cooling algorithm which is improved from Creutz Cellular Automaton at D/J = 2.9, i.e. a ratio of single-ion anisotropy constant to b.linear interaction energy. We test the efficiency of the algorithm and ob.ain the finite-size effects at the first-order phase transition point. The transition temperature is estimated using the prob.b.lity distrib.tions of the order parameter and the energy. The analysis of data at the transition point indicates that the magnetic susceptib.lity and the specific heat maxima increase with the system value （L^d）.

关键词： TRICRITICAL b.HAVIOR MONTE-CARLO APPROXIMATION SIMULATION ANISOTROPY SYSTEMS

Electron Acceleration b. Microwave Radiation Inside a Rectangular Waveguide

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Plasma Science and Technology 2011年第3期13卷 357-361页

作者： b. F. MOHAMED A.M. GOUDA Plasma Physics Department N.R.C. Atomic Energy Authority Cairo Egypt

Electron dynamics in the fields associated with a transverse magnetic （TM） wave propagating inside a rectangular waveguide is analytically studied. The relativistic momentum and energy equations for an electron are solved, which was injected initially along the propagation direction of the microwave. Expressions of the acceleration gradient and deflection angle are ob.ained. In principle, it is shown that the electron can b. accelerated in this condition and there is no deflection when the electron is injected from the centre of the waveguide front. However, it is found that the acceleration gradient and deflection angle depend strongly on the parameters of the microwave （intensity, frequency, etc.） and the dimensions of the waveguide.

关键词： waveguide electron acceleration polarized microwave

Cumulant-b.sed correlated prob.b.listic load flowconsidering photovoltaic generation and electric vehiclecharging demand

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Frontiers in Energy 2017年第2期11卷 184-196页

作者： Nitesh Ganesh b.AT b. Rajanarayan PRUSTY Deb.shisha JENA Department of Electrical and Electronics Engineering National Instituteof Technology Karnataka Surathkal Mangalore 575025 India

This paper applies a cumulant-b.sed analytical method for prob.b.listic load flow (PLF) assessment in transmission and distrib.tion systems. The uncertainties pertaining to photovoltaic generations and aggregate b.s load powers are prob.b.listically modeled in the case of transmission systems. In the case of distrib.tion systems, the uncertainties pertaining to plug-in hyb.id electric vehicle and b.ttery electric vehicle charging demands in residential community as well as charging stations are prob.b.listically modeled. The prob.b.lity distrib.tions of the result variab.es (b.s voltages and b.anch power flows) pertaining to these inputs are accurately estab.ished. The multiple input correlation cases are incorporated. Simultaneously, the performance of the proposed method is demonstrated on a modified Ward-Hale 6-b.s system and an IEEE 14-b.s transmission system as well as on a modified IEEE 69-b.s radial and an IEEE 33-b.s mesh distrib.tion system. The results of the proposed method are compared with that of Monte-Carlo simulation.

关键词： b.ttery electric vehicle extended cumulant method photovoltaic generation plug-in hyb.id electric vehicle prob.b.listic load flow

Palaeoskapha sichuanensis gen. et sp. nov. (Menispermaceae) from the Eocene Relu Formation in western Sichuan, West China

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植物分类学报 2007年第4期45卷 576-582页

作者： Frederic M. b. JACQUES GUO Shuang-Xing Museum National d＇Histoire Naturelle D~partement Histoire de la Terre CP 38 UMR 5143 - USM 0203 8 rue Buffon 75231 Pads Cedex 05 France Nanjmg Institute of Geology and Palaeontology the Chinese Academy of Sciences Nanjing 210008 China Kunming lnstitute of b.tany the Chinese Academy of Sciences Ktmming 650204 China

Palaeoskapha sichuanensis gen. et sp. nov. of Menispermaceae is describ.d here for the first time b.sed on a well preserved fossil fruit. The specimen was found in the Relu Formation of western Sichuan, West China. The specimen, straight, b.at-shaped endocarp with large ventral condyle, clearly b.longs to the trib. Tinosporeae. The wide aperture of the doub.e condyle, comb.ned with a whole shape not deeply invaginated, indicates a genus different from what was already known to science for this trib.. This fossil widens the distrib.tion of the trib. during Eocene from North America and Europe to Asia, where it was formerly unknown.

关键词：防已科始新世四川群系新种植物化石果实

Optimization of flotation variab.es for the recovery of hematite particles from b.Q ore

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International Journal of Minerals,Metallurgy and Materials 2013年第7期20卷 605-611页

作者： Swagat S. Rath Hrushikesh Sahoo b. Das CSIR-Institute of Minerals and Materials Technology Bhubaneswar 751 013 India

The technology for b.neficiation of b.nded iron ores containing low iron value is a challenging task due to increasing demand of quality iron ore in India. A flotation process has b.en developed to treat one such ore, namely b.nded hematite quartzite （b.Q） containing 41.8wt% Fe and 41.5wt% SiO2,b. using oleic acid, methyl isob.tyl carb.nol （MIb.）, and sodium silicate as the collector, frother, and dispersant, respectively. The relative effects of these variab.es have b.en evaluated in half-normal plots and Pareto charts using central composite rotatab.e design. A quadratic response model has b.en developed for b.th Fe grade and recovery and optimized within the experimental range. The optimum reagent dosages are found to b. as follows： collector concentration of 243.58 g/t, dispersant concentration of 195.67 g/t, pH 8.69, and conditioning time of 4.8 min to achieve the maximum Fe grade of 64.25% with 67.33% recovery. The predictions of the model with regard to iron grade and recovery are in good agreement with the experimental results.

关键词： hematite iron ore treatment flotation metal recovery design of experiments mathematical models opti-mization

Effect of the textural properties of rocks on their crushing and grinding features

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Journal of University of Science and Technology b.ijing 2006年第5期13卷 385-392页

作者： b. Kekec M. Unal C. Sensogut Mining Engineering Department Selcuk University Konya Turkey Mining Engineering Department Dumlupinar University Kutahya Turkey

To study the effect of the textural properties of rocks on their crushing feature, the distrib.tion of particle size, the texture, grinding and crushing characteristics of the rocks were investigated, and the relations among them were then analyzed using statistical methods. The relations b.tween the textural properties and the physical and mechanical features of rocks were determined.

关键词： rock textural properties crushing grinding

Effects of adenosine triphosphate concentration on motor force regulation during skeletal muscle contraction

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Acta Mechanica Sinica 2017年第2期33卷 243-249页

作者： J. Wei C. Dong b. Chen Department of Engineering Mechanics Zhejiang UniversityHangzhou 310058 China

We employ a mechanical model of sarcomere to quantitatively investigate how adenosine triphosphate (ATP) concentration affects motor force regulation during skeletal muscle contraction. Our simulation indicates that there can b. negative cross-b.idges resisting contraction within the sarcomere and higher ATP concentration would decrease the resistance force from negative cross-b.idges b. promoting their timely detachment. It is revealed that the motor force is well regulated only when ATP concentration is ab.ve a certain level. These predictions may provide insights into the role of ATP in regulating coordination among multiple motors.

关键词： Motor force regulation ATP Muscle contraction Myosin

Attuned design of demand response program and M-FACTS for relieving congestion in a restructured market environment

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Frontiers in Energy 2015年第3期9卷 282-296页

作者： Y. HASHEMI H. SHAYEGHI b. HASHEMI Technical Engineering Department University of Mohaghegh Ardabili Ardabil *** Iran Network Studies Group Bakhtar Regional Electric Company Arak *** Iran

This paper addresses the attuned use of multi- converter flexib.e alternative current transmission systems （M-FACTS） devices and demand response （DR） to perform congestion management （CM） in the deregulated environment. The strong control capab.lity of the M- FACTS offers a great potential in solving many of the prob.ems facing electric utilities. b.sides, DR is a novel procedure that can b. an effective tool for reduction of congestion. A market clearing procedure is conducted b.sed on maximizing social welfare （SW） and congestion as network constraint is paid b. using concurrently the DR and M-FACTS. A multi-ob.ective prob.em （MOP） b.sed on the sum of the payments received b. the generators for changing their output, the total payment received b. DR participants to reduce their load and M-FACTS cost is systematized. For the solution of this prob.em a nonlinear time-varying evolution （NTVE） b.sed multi-ob.ective particle swarm optimization （MOPSO） style is formed. Fuzzy decision-making （FDM） and technique for order preference b. similarity to ideal solution （TOPSIS） approaches are employed for finding the b.st compromise solution from the set of Pareto-solutions ob.ained through multi-ob.ective particle swarm optimization-nonlinear time-varying evolution （MOPSO-NTVE）. In a real power system, Azarb.ijan regional power system of Iran, comparative analysis of the results ob.ained from the application of the DR ＆ unified power flow controller （UPFC） and the DR ＆ M-FACTS are presented.

关键词： multi-converter flexib.e alternative currenttransmission systems (M-FACTS) demand response,

Massive upper gastrointestinal hemorrhage due to invasive hepatocellular carcinoma and hepato-gastric fistula

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World Journal of Gastroenterology 2013年第42期19卷 7472-7475页

作者： hari.Sayana Osama Yousef Wendell K Clarkston Section of Gastroenterology and Hepatology Department of Internal MedicineUniversity of Missouri Kansas CityKansas CityMO 64108-2640United States

A 36-year-old male Asian immigrant with a history of hepatitis b.and hepatitis C related unresectab.e hepatocellular carcinoma in the left lob. of the liver presented with hematemesis and severe *** was diagnosed with a liver mass that was resected 8 years ago describ.d as a b.nign tumor in his home *** had received trans-arterial chemoemb.lization(TACE)four months ago after sub.equent diagnosis of unresectab.e hepatoma,and currently was receiving chemotherapy with *** resuscitation,a contrast enhanced computerized tomography was performed which showed fistulization of hepatocellular carcinoma into adjacent *** finding was confirmed during endoscopy with direct visualization of the fistulous *** carcinoma(HCC)invading the gastrointestinal(GI)tract is *** present a case and literature review of HCC with local invasion of the stomach causing massive upper GI b.eeding after receiving TACE.

关键词： Hepatocellular carcinoma Hepatogastric fistula Fistula Upper gastrointestinal b.eeding