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Communications in Theoretical Physics 2014年第6期61卷 765-772页

作者： Gh.Safarpour m.A.Izadi m.Novzari E.Niknam m.m.Golshan Zarghan Branch Islamic Azad University Young Researchers and Elite Club Zarghan Branch Islamic Azad University Department of Physics College of Sciences Shiraz University

An investigation of the optical properties of a gaAs spherical quantum dot which is located at the center of a ga1-xAlx As cylindrical nano-wire has been performed in the presence of an external electric field. The band nonparabolieity effect is also considered using the energy dependent effective mass approximation. The energy eigenvalues and corresponding wave functions are calculated by finite difference approximation and the reliability of calculated wave functions is checked by computing orthogonality. Using computed energy eigenvalues and wave functions, the linear, third-order nonlinear and total optical absorption coefficients and refractive index changes are examined in detail. It is found that （i） Presence of electric field causes both blue and red shifts in absorption spectrum; （ii） The absorption coefficients shift toward lower energies by taking into account the conduction band nonparabolicity; （iii） For large values of electric field the effect of conduction band nonparabolieity is less dominant and parabolic band is estimated correctly; （iv） In the presence of electric field and conduction band nonparabolicity the nonlinear term of absorption coefficient rapidly increases by increasing incident optical intensity. In other words, the saturation in optical spectrum occurs at lower incident optical intensities.

关键词： nonlinear optics conduction band nonparabolicity electric field spherical quantum dot

Practical optimization of deployable and scissor-like structures using a fast ga method

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Frontiers of Structural and Civil Engineering 2019年第3期13卷 557-568页

作者： m.SALAR m.R.GHASEmI B.DIZANGIAN Department of Civil Engineering University of Sistan and BaluchestanZahedanIran Department of Civil Engineering Velayat UniversityIranshahrIran

This paper addresses practical sizing optimization of deployable and scissor-like structures from a new point of *** structures have been recently highly regarded for beauty,lightweight,determine behavior,proper performance against lateral loads and the ability of been compactly *** this time,there is a few studies done considering practical optimization of these *** considered here includes wind and gravity *** foldable scissor-like structures,connections have a complex *** this reason,in this study,the authors used the ABAQUS commercial package as an analyzer in the optimization *** made the obtained optimal solutions highly reliable from the point of view of applicability and construction ***,to do optimization task,a fast genetic algorithm method,which has been recently introduced by authors,was *** results show that despite less weight for aluminum models than steel models,aluminum deployable structures are not affordable because they need more material than steel structures and cause more environmental damage.

关键词： optimization scissor-like structures deployable structures genetic algorithm ABAQUS

Genetic Analysis and mapping of an Enclosed Panicle mutant Locus esp1 in Rice (Oryza sativa L.)

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Journal of Integrative Agriculture 2012年第12期11卷 1933-1939页

作者： DUAN Yuan-lin GUAN Hua-zhong ZHUO ming CHEN Zhi-wei LI Wen-tao PAN Run-sen mAO da-mei ZHOU Yuan-chang WU Wei-ren Key Laboratory of Genetics Breeding and Multiple Utilization of Crops Ministry of Education/Fujian Agricultural and Forestry University Fujian Provincial Key Laboratory of marker-Assisted Breeding of Rice/Fujian Agriculture and Forestry University

A mutant was isolated from the m2 of 60Co-T ray mutagenized male-fertility restorer line Zao-R974 in rice. The mutant showed pleiotropic phenotypes including dwarfism, delayed heading time, short and partially enclosed panicles, short uppermost internode, decreased grain and secondary branch numbers per panicle, and partially degenerated spikelets. The mutant was named as espl （enclosed shorter panicle 1）. Genetic analysis indicated that the mutant phenotype was controlled by a recessive locus. Spraying exogenous ga~ did not rescue the panicle enclosure. Using an F2 and a BC, population of the cross between espl and a japonica cultivar Nipponbare, we mapped the ESP1 locus to a region of-260 kb on chromosome 11. This result provides a basis for further map-based cloning of the ESP1 locus.

关键词： rice panicle enclosure espl genetic analysis fine mapping

PID Controller Optimization by ga and Its Performances on the Electro-hydraulic Servo Control System

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Chinese Journal of Aeronautics 2008年第4期21卷 378-384页

作者： Karam m. Elbayomy School of Automation Science and Electrical Engineering Beijing University of Aeronautics and Astronautics

A proportional integral derivative （PID） controller is designed and attached to electro-hydraulic servo actuator system （EHSAS） to control the angular position of the rotary actuator which control the movable surface of space vehicles. The PID gain parameters are optimized by the genetic algorithm （ga）. The controller is verified on the new state-space model of servo-valves attached to the physical rotary actuator by SImULINK program. The controller and the state-space model are verified experimentally. Simulation and experimental results verify the effectiveness of the PID controller adaptive by ga to control the angular position of the rotary actuator as compared with the classical PID controller and the compensator controller.

关键词： PID controller electro-hydraulic servo control system genetic controller ga

Surface plasmon oscillations in a semi-bounded semiconductor plasma

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Plasma Science and Technology 2018年第2期20卷 76-81页

作者： m SHAHmANSOURI A P mISRA Department of Physics Faculty of ScienceArak University Department of mathematics Siksha BhavanaVisva-Bharati University

We study the dispersion properties of surface plasmon（SP） oscillations in a semi-bounded semiconductor plasma with the effects of the Coulomb exchange（CE） force associated with the spin polarization of electrons and holes as well as the effects of the Fermi degenerate pressure and the quantum Bohm *** from a quantum hydrodynamic model coupled to the Poisson equation,we derive the general dispersion relation for surface plasma *** results in this context are *** dispersion properties of the surface waves are analyzed in some particular cases of interest and the relative influence of the quantum forces on these waves are also studied for a nano-sized ga As semiconductor *** is found that the CE effects significantly modify the behaviors of the SP *** present results are applicable to understand the propagation characteristics of surface waves in solid density plasmas.

关键词： surface plasmon oscillations semiconductor plasma semi-bounded plasma

A Dual Effect of Au-Nanoparticles on Nucleic Acid Cholesteric Liquid-Crystalline Particles

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Journal of Biomaterials and Nanobiotechnology 2011年第4期2卷 461-471页

作者： Yuri m. Yevdokimov Sergey G. Skuridin Victor I. Salyanov Vladimir I. Popenko Victor m. Rudoy Ol,ga V. Dement′eva Eleonora V. Shtykova 不详

Au-nanoparticles (size about 2 nm, but not 5 or 15 nm) are capable of effectively incorporating into quasinematic layers of particles of cholesteric liquid-crystalline dispersion formed by double-stranded nucleic acid molecules of various families (DNA and poly(I)xpoly(C)). This Au-size-dependent process is accompanied by a decrease in amplitudes of abnormal bands in the CD spectra specific to initial cholesteric liquid-crystalline dispersions and simultaneously by an appearance of plasmon resonance band in visible absorption spectrum. The study of properties of particles of cholesteric liquid-crystalline dispersion treated with Au-nanoparticles by means of various physico-chemical methods demonstrates that incorporation of Au-nanoparticles into quasinematic layers of these particles results in two effects: i) it facilitates reorganization of the spatial cholesteric structure of particles, and ii) it induces the formation of Au-clusters in the content of particles. It is not excluded that these effects represent a possible reason for genotoxicity of Au-nanopar- ticles.

关键词： Double-Stranded Nucleic Acids Gold Nanoparticles Nucleic Acid Liquid-Crystalline Dispersions Circular Dichroism Structure of Lyotropic Liquid Crystals of (Bio)Polymers Genotoxity of Nanoparticles

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建筑垃圾免烧型陶粒的研制及其应用研究

四川建筑科学研究 2018年第6期44卷 82-86页

作者：朱万旭张瑞东周红梅高逸豪广西科技大学土木工程学院广西柳州545006 桂林理工大学土木工程学院广西桂林541004 柳州汉西鸣建材发展有限公司广西柳州545006

以建筑垃圾再生微粉、粉煤灰和水泥为主要原料,生石灰和石膏作为激发剂,利用造粒机成球原理研制出一种免烧型建筑垃圾陶粒。选取筒压强度和堆积密度为评价指标,基于正交试验确定出制备陶粒物料的最佳配合比,最佳配合比条件下免烧陶粒的... 详细信息

以建筑垃圾再生微粉、粉煤灰和水泥为主要原料,生石灰和石膏作为激发剂,利用造粒机成球原理研制出一种免烧型建筑垃圾陶粒。选取筒压强度和堆积密度为评价指标,基于正交试验确定出制备陶粒物料的最佳配合比,最佳配合比条件下免烧陶粒的筒压强度为7. 2 mPa,堆积密度为910 kg·m-3。并以自制陶粒为轻骨料,水泥为胶凝材料,辅以外加剂,制备出一种可用于轨道交通噪声治理的水泥基多孔陶粒吸声材料,测得材料的平均吸声系数为0. 55,在频率630 Hz处的峰值吸声系数达到了0. 92,吸声板的降噪系数为0. 8。

关键词：建筑垃圾再生微粉免烧陶粒正交试验吸声材料

非洲裔美国人队列中长期空气污染与血压的相关性:Jackson心脏研究

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中华高血压杂志 2021年第2期29卷 114-114页

作者：袁源(译) 练桂丽(审校) Weaver Am Wang Y Wellenius ga Bidulescu A Sims m Vaidyanathan A Hickson da Shimbo D Abdalla m Diaz Km Seals SR 不详

非洲裔美国人不同程度地受到高血压的影响,可能与空气污染暴露有关,如细颗粒物和臭氧。方法:在非洲裔美国人Jackson心脏研究参与者中,采用log-binomial回归,研究1年及3年平均细颗粒物及臭氧浓度与第1次(2000-2004,5191例)及第2次随访(20... 详细信息

非洲裔美国人不同程度地受到高血压的影响,可能与空气污染暴露有关,如细颗粒物和臭氧。方法:在非洲裔美国人Jackson心脏研究参与者中,采用log-binomial回归,研究1年及3年平均细颗粒物及臭氧浓度与第1次(2000-2004,5191例)及第2次随访(2005-2008,4105例)时高血压患病率及发病率的相关性。研究者采用线性回归和分层线性模型,在校正社会人口、行为和临床特征后,评估与收缩压、舒张压、脉压和平均动脉压的相关性。

关键词：非洲裔美国人高血压患病率细颗粒物空气污染线性回归臭氧浓度分层线性模型平均动脉压

Polycaprolactone (PCL) Chains Grafting on the Surface of Cellulose Nanocrystals (CNCs) during <i>In Situ</i>Polymerization of <i>ε</i>-Caprolactone at Room Temperature

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materials Sciences and Applications 2020年第11期11卷 744-756页

作者： Jérémy Astruc Patrice Cousin gaétan Laroche mathieu Robert Saïd Elkoun Center of Innovative Technology and Eco-Design (CITE) University of Sherbrooke Granby QC Canada Laboratoire d’Ingénierie de Surface Département de Génie des Mines de la Métallurgie et des Matériaux Centre de recherche sur les Matériaux avancés Pavillon Adrien-Pouliot University of Laval Québec QC Canada Centre de Recherche du CHU de Québec Hopital Saint-Francois d’Assise Québec QC Canada

This work aimed at investigating the feasibility of surface modification of cellulose nanocrystals (CNCs) using in situ ring opening polymerization of ε-caprolactone (ε-CL) at room temperature. Residues of flax and ... 详细信息

This work aimed at investigating the feasibility of surface modification of cellulose nanocrystals (CNCs) using m>in situm> ring opening polymerization of m>εm>-caprolactone (m>εm>-CL) at room temperature. Residues of flax and milkweed (m>Asclepias syriacam>) stem fibers were used as a source of cellulose to obtain and isolate CNCs. The cationic ring opening polymerization (CROP) of the monomer m>εm>-CL was used to covalently graft polycaprolactone (PCL) chains at the CNCs surface. Silver hexafluoroantimonate (AgSbF6) was used in combination with the extracted CNCs to initiate, at room temperature, the polymerization and the grafting reactions with no other stimulus. Fourier-Transform InfraRed (FTIR), X-ray Photoelectron Spectrometry (XPS), UV/visible absorption and Gel Permeation Chromatography (GPC) analyses evidenced the presence of PCL chains covalently grafted at CNCs surface, the formation of Ag(0) particles as well as low or moderate molecular weight free PCL chains.

关键词： Cellulose Nanocrystals (CNCs) Simultaneous Polymerization and Surface Grafting ε-Caprolactone Cationic Ring Opening Polymerization Room Temperature Silver Hexafluoroantimonate

Epidemiological, Clinical and Therapeutic Aspects of Schizoaffective Disorder at the CHU-Campus of Lomé(Togo)

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Health 2022年第3期14卷 322-329页

作者： Saliou Salifou daméga Wenkourama Sonia Kanekatoua Charfoundine Affo Yaovi Alofa Kolou Simliwa dassa Clinique Universitaire de Psychiatrie et de Psychologie médicale CHU Sylvanus Olympio-Lomé H&#244 pital Psychiatrique de Zébé-Aného Faculté des Sciences de la Santé Université de Lomé Lomé Togo Service de Psychiatrie Faculté des Sciences de la Santé Université de Kara Kara Togo Clinique de Psychiatrie et de Psychologie médicale Faculté des Sciences de la Santé CHU Campus Université de Lomé Lomé Togo Clinique médico-Psychiatrique de Lomé Lomé Togo

Introduction: Schizoaffective disorder is a chronic psychotic disorder. It is characterized by the simultaneous presence of symptoms of a characterized mood disorder and symptoms of schizophrenia. data on this disorder are almost non-existent in West Africa. The objective was to describe the epidemiological, clinical and therapeutic aspects of schizoaffective disorder at the Campus University Hospital Centre (CHU-Campus) of Lomé in Togo. Framework and method: This was a retrospective study with a descriptive aim on patients hospitalized at the Clinic of Psychiatry and medical Psychology (CPPm) of CHU-Campus from January 1st, 2013 to December 31, 2018. Results: A total of 46 patients were included in this study. Their mean age was 39.5 years with extremes ranging from 14 to 65 years. Females had predominated at 52.18% or a sex ratio of 0.91. married people represented 47.83%. Primary education represented 34.80%. The unemployed were in the majority at 32.92%. Sixty-five point twenty two percent (65.22%) of the patients had a personal psychiatric history. All patients had presented with delusions plus other psychotic and mood symptoms. Almost all patients (97.82%) had received a thymoregulator associated with a first generation antipsychotic (95.65%). Conclusion: more studies should be done in our countries to describe the cultural aspects of this disease.

关键词： Schizoaffective Disorder Epidemiology Antipsychotics Thymoregulators Togo