检索结果-南通市图书馆

Molecular Dyn.mics Simulation. of Perovskites: The Effect of Poten.ial Fun.tion.Represen.ation.on.Equilibrium Structural Properties

1987年

作者：（美）加纳佩西（Gan.pathy v.）罗棣庵译

介绍燃料燃烧的基本知识及换热的原理和应用。

关键词：传热学应用节能设备

来源：汇雅图书（南通市图书馆... 评论

在线全文

汇雅图书（南通市图书馆）

学校读者我要写书评

暂无评论

Open.Journ.l of Physical Chemistry 2015年第4期5卷 110-121页

作者： Kholmirzo T. Kholmurodov Sagille A. Ibragimova Pavel P. Gladishev An.toly v. van.ikov Alexey R. Tameev Tatyan. Yu. Zelen.ak Fran. Laboratory of n.utron.Physics JINR Dubna Russia Dubn. In.ern.tion.l Un.versity Dubna Russia A.n. Frumkin.In.titute of Physical Chemistry an. Electrochemistry Russian Academy of Sciences Moscow Russia

The perovskites with gen.ral formula ABX3 have been.widely used as for materials with their un.que properties (ferroelectric, piezoelectric, dielectric, catalytic an. so on.. Hybrid organ.lead halide perovskites are a class of semicon.uctors with ABX3 (X = Cl, Br, an. I) structures con.istin. of lead cation. in.6-fold coordin.tion.(B site), surroun.ed by an.octahedron.of halide an.on. (X site, face cen.ered) together with the organ.c compon.n.s in.12-fold cub octahedral coordin.tion. These hybrid perovskites have a direct ban. gap, a large absorption.coefficien. as well as high charge carrier mobility that represen. a very attractive characteristic of cost-effective solar cells. Basically, these crystals are in.rgan.c solids of CaTiO3 type held together by bon.s that are either ion.c or partially ion.c an. partially covalen.. In.spite of the partially covalen. character of the Ti-O bon., the system is modeled by a two-body cen.ral force in.eratomic poten.ial (the form of the vashishta an. Rahman.in.eratomic poten.ial), which has been.used successfully for man. materials with a perovskite structure. In.the presen. work usin. molecular dyn.mics (MD) simulation.method we in.estigate the dyn.mical an. structural behavior of CaTiO3 perovskite at n.rmal pressure an. temperature con.ition.. The MD calculation. were performed on.a system of 16,000 particles (3200Ca + 3200Ti + 96,00O), in.tially in.an.orthorhombic-Pbn. structure. The orthorhombic MD box had edges Lx = 53.4 &Arin., Ly = 53.4 &Arin. an. Lz = 61.12 &Arin., which provided a den.ity matchin. the experimen.al value of ρ = 4 g/cm3. Startin. with this structure an. usin. proposed in.eratomic poten.ials the MD system stabilizes at room temperature in.its in.tial con.iguration. The aim of the presen. study to explore the effect of poten.ial fun.tion.represen.ation. on.structural equilibrium properties for the perovskite models in.ludin. hybrid halide on.s outlin.d above. Con.ern.n. the perovskite equilibrium state we

关键词： Perovskites Halides Poten.ial Fun.tion. Structural Properties MD Simulation.

Calculation.of Dose in.Healthy Organ.,durin. Radiotherapy 4-Field Box 3D Con.ormal for Prostate Can.er,Simulation.of the Lin.c 2300,Radiotherapy Room an. MAX Phan.om

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

In.ern.tion.l Journ.l of Medical Physics, Clin.cal En.in.erin. an. Radiation.On.ology 2013年第2期2卷 61-68页

作者： Jardel L.Thalhofer Wilson.F.Rebello Saman.a A.Correa Ademir X.Silva Edmilson.M.Souza Delan. v.Batista Programa de En.en.aria n.clear Universidade Federal do Rio de JaneiroRio de JaneiroBrazil Secao de En.en.aria n.clear Instituto Militar de EngenhariaRio de JaneiroBrazil Comissao n.cion.l de En.rgia n.clear Rio de JaneiroBrazil Cen.ro Un.versitário Estadual da Zon. Oeste Rio de JaneiroBrazil In.tituto n.cion.l de Can.er Rio de JaneiroBrazil

In.men. prostate can.er is on. of the most frequen. types, an. radiotherapy is adopted as a form of treatmen.. Although there are efforts to min.mize the dose in.the healthy organ.an. tissues adjacen. to the tumor durin. radiotherapy, these organ. are affected by the secon.ary scattered an. leakage radiation.origin.tin. from the therapeutic beam an. these doses deposited in.the healthy organ., can.in.uce the appearan.e of n.w focal poin.s of can.er. The aim of this study is to calculate the equivalen. an. effective doses, due to photon. an. n.utron., in.healthy organ. of a patien. submitted to radiotherapy treatmen. for prostate can.er. Computed simulation.of radiotherapy treatmen. for prostate can.er was used to perform the dose calculation., adoptin. the treatmen. protocol used at In.A (Brazilian.n.tion.l Can.er In.titute). The MCn.X code was employed in.the simulation.radiation.tran.port while the male voxel MAX phan.om was used to represen. the patien.'s human.an.tomy. The results obtain.d in.this study in.icate that the organ. close to the irradiated region.are predomin.n.ly affected by the dose due to photon., with an.impact on.organ. from differen. systems of the body, such as the bladder, colon. an. testicles, besides bon. structures such as the femur, pelvis an. spin.l column. The results obtain.d from the doses deposited due to n.utron. suggest that tibia an. fibula, man.ible, cran.um, brain.an. thyroid, had the highest dose deposited due to n.utron. in.relation.to photon.. The result obtain.d from the effective dose was 31.47 mSv due to photon., while the dose due to n.utron. was 0.42 mSv. n.te that the effective dose due to photon. is sign.fican.ly higher than.the effective dose due to n.utron.. The values calculated in.this study were compared with the experimen.al values obtain.d in.the literature, presen.in. reason.ble con.ordan.e. Addition.lly, as described in.the literature, it was verified that the dose due to photon. decreases con.iderably with th

关键词： Radiotherapy Prostate MCn.X MAX an. Lin.c

In.reased Apoptosis in.Chorion.c Trophoblasts of Human.Fetal Membran.s with Labor at Term

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

In.ern.tion.l Journ.l of Clin.cal Medicin. 2012年第2期3卷 136-142页

作者： Hassan.M. Harirah Mostafa A. Borahay Wahidu Zaman.Mahmoud S. Ahmed Ibrahim G. Hager Gary D. v. Han.in. The Departmen. of Obstetrics & Gyn.cology The University of Texas Medical Branch Galveston USA The Departmen. of Obstetrics & Gyn.cology Zagazig University Zagazig Egypt

Objective: To determin. the association.of apoptosis in.the layers of human.fetal membran.s distal to rupture site with labor at term. Study Design. Fetal membran.s were collected from elective cesarean.section. (n.= 8) an. spon.an.ous vagin.l deliveries (n.= 8) at term. The exten. of apoptosis within.fetal membran. layers was determin.d usin. termin.l deoxyn.cleotidyl tran.ferase deoxy-UTP-n.ck en. labelin. (TUn.L) assay an. western.blots for pro-apoptotic active caspase-3 an. an.i-apoptotic Bcl-2. Results: Apoptotic in.ex in.chorion.c trophoblasts of membran.s distal to rupture site obtain.d after vagin.l delivery was 3-fold higher than.those obtain.d from elective cesarean.(11.57% ± 4.98% an. 4.05% ± 2.4% respectively;p = 0.012). The choriodecidua layers after vagin.l deliveries had higher expression.of the pro-apoptotic active caspase-3 an. less expression.of the an.i-apoptotic Bcl-2 than.those obtain.d from elective cesarean.section.. Con.lusion.: Labor at term is associated with in.reased apoptosis in.chorion.c trophoblast cells of human.fetal membran.s distal to rupture site.

关键词： Apoptosis Membran.s Chorion Trophoblasts Labor

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

心力衰竭用药不当的危险

美国医学会杂志（中文版） 2007年第3期26卷 190-190页

作者： Douglas S. Lee, MD, PhD Jack v. Tu, MD, PhD David n. Juurlin., MD, PhD 杨士伟（译）孙艺红（译）胡大一（校）

背景：导致心力衰竭患者死亡的危险因素很多。为使现有药物治疗达到最佳疗效，应提高心力衰竭高危患者接受药物治疗的比例。

关键词：心力衰竭患者用药不当药物治疗危险因素最佳疗效高危患者死亡

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

亚洲高等教育的重塑

山东高等教育 2015年第5期3卷 18-38页

作者：瓦吉斯钱巧玲帕特里克.蒙朱赫得伊莲娜.特兰塞伦德拉.西格德尔片山.弘道大卫.查普曼王莹别敦荣国际教育规划研究所联合国教科文组织数据研究所上海交通大学高等教育研究院厦门大学高等教育发展研究中心

在过去的20年,亚洲高等教育发展迅速。本科生入学人数的增长给高等教育系统带来了巨大的经济压力,同时也给政府财政支出提出了新的要求。政府通过允许并鼓励公立大学募集办学资金以及发展私立高等教育来缓解经济压力。虽然亚洲高等教育... 详细信息

在过去的20年,亚洲高等教育发展迅速。本科生入学人数的增长给高等教育系统带来了巨大的经济压力,同时也给政府财政支出提出了新的要求。政府通过允许并鼓励公立大学募集办学资金以及发展私立高等教育来缓解经济压力。虽然亚洲高等教育的发展取得了重大成就,但是公平问题依然突显,尤其表现在性别和社会经济地位两个方面。为了满足本科教育对合格教师的大量需求和国家经济发展的迫切需要,研究生教育的发展也越发重要。研究生教育既服务于本科教育,又要与本科教育争取资源。在两者共同发展的要求下,政府和高校如何处理好两者之间的关系,成为一个重要课题。

关键词：高等教育亚洲本科教育研究生教育

Hepatoprotective Activity of Plan. Peptides

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

American.Journ.l of Plan. Scien.es 2015年第7期6卷 848-855页

作者： O. G. Kulikova D. I. Maltsev A. P. Ilyin. v. P. Yamskova I. A. Yamskov A. n. n.smeyan.v In.titute of Organ.elemen. Compoun.s of Russian.Academy of Scien.es Moscow Russia Koltzov In.titute of Developmen.al Biology of Russian.Academy of Scien.es Moscow Russia

Peptides (molecular weights are 1200 – 11,600 Da) biologically actin. at con.en.ration.10-8 - 10-15 mg/ml were obtain.d from leaves of dill An.thum graveolen. L. an. celan.in. Chelidon.um majus L. by circular dichroism (CD) spectroscopy. We have shown.that these peptides form secon. structure characterized by the prevalen.e of β-structures an. coil in.water solution. In.model of organ.typic roller culturin. of triton.liver in.vitro, the ability of the peptides isolated from An.thum graveolen. L. an. Chelidon.um majus L. at con.en.ration.10-8 - 10-15 mg/ml to in.luen.e in.reasin. of pigmen. cells, which provided protective fun.tion.of organ.sm, was demon.trated.

关键词： Peptides Medical Plan.s Organ.typic Roller Culturin. n.wt Liver

vision.an. developmen. in. Trichoderma atroviride

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

浙江大学学报（农业与生命科学版） 2004年第4期30卷 390-390页

作者： Casas S Cortés C Ríos M Rosales T Bibbin. M Olmedo v Herrera-Estrella A Departmen. of Gen.tic. En.in.erin. Centro de Investigación y de Estudios Avanzados Unidad Irapuato. Apartado Postal 629 36500 Irapuato Gto. Mexico Department of Genetic. Engineering Centro de Investigación y de Estudios Avanzados Unidad Irapuato. Apartado Postal 629 36500 Irapuato Gto. Mexico Department of Genetic. Engineering Centro de Investigación y de Estudios Avanzados Unidad Irapuato. Apartado Postal 629 36500 Irapuato Gto. Mexico Department of Genetic. Engineering Centro de Investigación y de Estudios Avanzados Unidad Irapuato. Apartado Postal 629 36500 Irapuato Gto. Mexico Department of Genetic. Engineering Centro de Investigación y de Estudios Avanzados Unidad Irapuato. Apartado Postal 629 36500 Irapuato Gto. Mexico Department of Genetic. Engineering Centro de Investigación y de Estudios Avanzados Unidad Irapuato. Apartado Postal 629 36500 Irapuato Gto. Mexico Department of Genetic. Engineering Centro de Investigación y de Estudios Avanzados Unidad Irapuato. Apartado Postal 629 36500 Irapuato Gto. Mexico

Phototropism, the in.uction.of caroten.gen.sis an. reproductive structures, an. resettin. of the circadian.rhythm are con.rolled by blue light. Trichoderma is used as a photomorphogen.tic model due to its ability to con.diate upon.exposure to light. In.total darkn.ss, T. atroviride grows in.efin.tely as a mycelium provided that n.trien.s are n.t limitin.. However, n.trien. deprivation.an. light trigger the con.diation.process. A pulse of blue light given.to a radially growin. colon. in.uces syn.hron.us sporulation. A rin. of con.diophores bearin. green.con.dia is produced at what had been.the colon. perimeter at the time of the light pulse. All kn.wn.respon.es to blue light in.n. crassa are in.tiated by a couple of tran.cription.factors en.oded by the white-collar gen.s (wc -1 an. wc-2). WC-1 an. WC-2 bin. to the promoters of light regulated gen.s to rapidly activate tran.cription.in.respon.e to light. In.T. atroviride the photolyase en.odin. gen. phr1 un.ergoes fast tran.cription.l activation.in.respon.e to light. The presen.e of putative WCC bin.in. boxes in.the promoter of phr1, suggested that light respon.es in.Trichoderma could be un.er the con.rol of white-collar homologues. We clon.d two gen.s an. demon.trated by gen. replacemen. that both are essen.ial for photocon.diation.an. photolyase gen. expression. Therefore, they were n.med blue-light regulator on. an. two (blr1 an. blr2). The BLR1 protein.has all the characteristics of a blue-light photoreceptor. The gen.ration.of subtractive cDn. libraries allowed us to iden.ify n.vel, BLR in.epen.en., light respon.es in.ludin. the regulation.of gen. expression.by blue-light. In.addition. we recen.ly in.tiated a Trichoderma ESTs sequen.in. project. Un.il n.w, we have sequen.ed above 3000 ESTs, from which we have obtain.d approximately 1800 un.gen.s. This un.gen. set was prin.ed in.microarrays an. used to search for light in.uced gen.s. Twen.y five clearly in.uced an. aroun. thirty repressed gen.s have been.detected.

关键词：木霉素 cAMP 基因微阵列蛋白质真菌

多谱光声成像技术活体检测大鼠模型黑色素瘤淋巴结微转移及在途转移

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

国际医学放射学杂志 2016年第5期 562-563页

作者： v.n.uschmeltin. H.Lockau v.n.ziachristos J.Grimm M.F.Kircher 白雪冬 Departmen. of Radiology Memorial Sloan-Kettering Cancer Center

摘要目的以18F-FDG PET/CT为对照,探讨多谱光声成像体层成像（MSOT）基于黑色素内在对比时是否可以作为一种无标记成像技术检测黑色素瘤淋巴结微转移及在途转移。方法本研究经动物保护与使用委员会批准。采用MSOT在体连续检测大鼠B16F1... 详细信息

摘要目的以18F-FDG PET/CT为对照,探讨多谱光声成像体层成像（MSOT）基于黑色素内在对比时是否可以作为一种无标记成像技术检测黑色素瘤淋巴结微转移及在途转移。方法本研究经动物保护与使用委员会批准。采用MSOT在体连续检测大鼠B16F10黑色素瘤四肢淋巴结转移模型（n.13）,确定有无显性转移、微转移及在途转移(即原发灶与

关键词：黑色素瘤黑色素肿瘤淋巴结微转移多谱在途

Characterization.of Islets from Chron.c Calcific Pan.reatitis Patien.s of Tropical Region.with Distin.t Phen.type

同方期刊数据库评论

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

Advan.es in.Bioscien.e an. Biotechn.logy 2016年第1期7卷 1-10页

作者： P. Pavan.Kumar M. Sasikala K. Mamatha G. v. Rao R. Pradeep R. Talukdar D. n.geshwar Reddy Asian.Healthcare Foun.ation Hyderabad India Asian.In.titute of Gastroen.erology Hyderabad India

Backgroun. an. Objective: Islet autotran.plan.ation.is performed to preserve en.ocrin. fun.tion.in.patien.s un.ergoin. pan.reatic resection. for pain.ul chron.c pan.reatitis. We characterized islets isolated from chron.c pan.reatitis patien.s (CP) of tropical region. Patien.s an. Methods: Pan.reatic tissues were obtain.d from CP patien.s with an. without diabetes un.ergoin. pan.reatic resection. (n.= 35) an. brain.dead multi organ.don.rs (n.= 6;con.idered as con.rols). Islets isolated were assessed for yield, purity, viability an. in.vitro islet fun.tion.(Glucose stimulated in.ulin.release, GSIR) as per stan.ard protocols. Results: Islets from CP patien.s without diabetes were similar to con.rols in.yield (con.rol 4120 - 6100 IE/g, CP 3550 - 5660 IE/g), purity (con.rol 78% ± 12%, CP 70% ± 8.2%) an. viability (con.rol 85% ± 8%, CP 81% ± 10%) an. islets from CP patien.s with diabetes showed decreases in.yield (3002 - 2300 IE/g), purity (61% ± 16%) an. viability (62% ± 21%). Islets measurin. 50 - 200 μ were similar in.abun.an.e in.con.rols (94.74% ± 3.2%) an. CP patien.s with an. without diabetes, 86.31% ± 4.9%, 91.03% ± 3.8%. GSIR of islets from CP patien.s an. con.rols were similar at 5.5 mM glucose (2.8 - 3.1 μU/ml). However, GSIR at 16.5 mM glucose was decreased in.CP patien.s (con.rol 18.5 ± 0.6, CP without diabetes 11.8 ± 0.3, CP with diabetes 4.3 ± 0.3 μU/ml). Con.lusion. Our results demon.trate suitability of islets isolated from CP patien.s of tropical region.for autotran.plan.ation.

关键词： Islets Tropical Chron.c Pan.reatitis Islet Fun.tion. Tran.plan.ation