检索结果-南通市图书馆

Journal of Chemistry and Chemical Engineering 2011年第10期5卷 956-961页

作者： Tuncer Mutlu M. Galip Icduygu z. ozgur yazici Department of Chemical Engineering Engineering Faculty University of Kocatepe ANS Campus Afyonkarahisar 03200 Turkey Department of Material Science and Engineering Engineering Faculty University of Kocatepe ANS Campus Afyonkarahisar03200 Turkey

Polymer exchange membrane fuel cells （PEMFC） are objects of the current engineering technology and these are versatile generators for electrical energy. There are various kinds from them, but all of them are going on work at highest temperature. There isn＇t a PEMFC which can run at room temperature, like 20 ℃. In this study there is a aim for constructing such one for alternative fuels utilisation. PS and many electroconducting polymer formulations were proved by different researchers for PEM benefications, but here PS was synthesiz.d without containing metalic contaminants and after converted to the PEM membrane.

关键词： PEMFC MEA fuels polymer modifiers metal complex electroconducting polymer materials catalyst

A Parallel Boundary Element Formulation for Tracking Multiple Particle Trajectories in Stoke’s Flow for Microfluidic Applications

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Computer Modeling in Engineering & Sciences 2015年第3期104卷 227-249页

作者： z.Karakaya B.Baranoglu B.Çetin A.yazici Computer Engng.Dept. Atilim UniversityTurkey Manufacturing Engng.Dept. Atilim UniversityTurkey Microfluidics & Lab-on-a-chip Research Group Mech.Engng.Dept.Bilkent UniversityTurkey Software Engng.Dept. Atilim UniversityTurkey

A new formulation for tracking multiple particles in slow viscous flow for microfluidic applications is *** method employs the manipulation of the boundary element matrices so that finally a system of equations is obtained relating the rigid body velocities of the particle to the forces applied on the *** formulation is specially designed for particle trajectory tracking and involves successive matrix multiplications for which SMP(Symmetric multiprocessing)parallelisation is *** is observed that present formulation offers an efficient numerical model to be used for particle tracking and can easily be extended for multiphysics simulations in which several physics involved.

关键词： Boundary Element Method particle tracking Stoke's flow parallel computing

Immediate versus delayed primary nerve repair in the rabbit sciatic nerve

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Neural Regeneration Research 2013年第36期8卷 3410-3415页

作者： Ahmet Piskin Berrin z.hal Altunkaynak Atilla tlak Hicabi Sez.in Oz.ür yazici Süleyman Kaplan Department of Orthopedics and Traumatology School of Medicine Ondokuz Mayis University Department of Histology and Embryology School of Medicine Ondokuz Mayis University Department of Orthopedics and Traumatology School of Medicine Giresun University

It is well known that peripheral nerve injury should be treated immediately in the clinic, but in some instances, repair can be delayed. This study investigated the effects of immediate versus delayed （3 days after injury） neurorrhaphy on repair of transected sciatic nerve in New z.aland rabbits using stereological, histomorphological and biomechanical methods. At 8 weeks after immediate and delayed neurorrhaphy, axon number and area in the sciatic nerve, myelin sheath and epineurium thickness, Schwann cell morphology, and the mechanical property of nerve fibers did not differ obviously. These results indicate that delayed neurorrhaphy do not produce any deleterious effect on sciatic nerve repair.

关键词： neural regeneration delayed peripheral nerve repair sciatic nerve peripheral nerve injurystereology microscopy biomechanics neuroregeneration

Novel Isatin-Schiff Base Cu (II) and Ni(II) Complexes. X-ray Crystal Structure of Bis[3-(4-hexylphenylimino)-1H-indol-2(3H)-one]-dichlorocopper(II) Complex

在线全文

学校读者我要写书评

暂无评论

Chinese Chemical Letters 2006年第2期17卷 243-246页

作者： Ayse ERCAG Sema Oz.ürk YILDIRIM Mehmet AKKURT Mahmure Ustün ozgur Frank W. HEINEMANN Istanbul University Engineering Faculty Chemistry Department Avcilar Istanbul Turkey 34320 Department of Physics Faculty of Arts and Sciences Erciyes University Kayseri Turkey 38039 Yildiz.Technical University Faculty of Arts and Sciences Chemistry Department Davutpasa Istanbul Turkey 34210 Institut für Inorganische Chemie UniversittErlangen-Nürnberg Egerlandstrasse 1 D-91058 Erlangen Germany

Schiff base ligand （HL） derived from 4-hexylaniline with isatin （1H-indole-2,3-dione） and its complexes with Cu（Ⅱ）, Ni（Ⅱ） were prepared and characteriz.d by analytical, spectroscopic （IR, UV-Vis, Mass） techniques, electrical conductivity, magnetic and thermal measurements. The crystal and molecular structure of [Cu（HL）2Cl2] was determined by a single-crystal X-ray diffraction study. The molecular structure of the title compound has an inversion center on the Cu atom.

关键词： Mononuclear Cu(Ⅱ) and Ni(Ⅱ) complexes isatin-anilines Schiff base crystal structure.

在线全文

学校读者我要写书评

暂无评论

优势眼测量法的研究(英文)

国际眼科杂志 2008年第10期8卷 1980-1986页

作者： Nimet Unay Gundogan Ayse Canan yazici Ayten Simsek 巴斯肯特大学医学院生理学系土耳其安卡拉市

目的:为了检查一项新的性能测试,对同以受试者用两种不同的方法进行检测和再测试,并比较和讨论这些检测方法的可靠性。方法:共179个大学生(平均年龄±标准差为19.37±1.62)a自愿参加这项由110名女性(61.5%)和69名男性(38.5%)组成的调查... 详细信息

目的:为了检查一项新的性能测试,对同以受试者用两种不同的方法进行检测和再测试,并比较和讨论这些检测方法的可靠性。方法:共179个大学生(平均年龄±标准差为19.37±1.62)a自愿参加这项由110名女性(61.5%)和69名男性(38.5%)组成的调查。优势眼由两种不同的方法检测,一个为McManus方法,一个为Gndo■an方法。利用SPSS的重测信度的可靠性分析保证该项调查的可靠性。结果:McManus方法检测128名(71.5%)参加者右眼为优势眼,无性别差异。同样利用Gndogˇan方法再检测发现110名(61.5%)参加者右眼为优势眼。两种方法的检测结果由Fisher确切概率法分析发现呈显著性相关(Pz.验完成,P值小于0.05为差异显著。结论:通过检测观察到女性和男性均以右眼优势眼为主,没有性别差异。右眼优势这种功能性偏侧化现象可能是由于大脑左半球的主导作用造成的。这对于将来在一侧面偏重方面的研究很重要,也许会成为一个重要的模式系统。

关键词：优势哏优势眼测量法功能性不对称一侧面偏重

在线全文

学校读者我要写书评

暂无评论

对有核与无核多层基板的供电网络分析

中国集成电路 2014年第12期23卷 77-81,88页

作者： ozgur Misman Mike DeVita Noz.d Karim 安靠封装测试

由于具有高密度布线能力和相对合理的成本,在特殊用途集成电路(ASI Cs)的倒装封装中使用叠积层式(bui l d-up)有机基板非常受欢迎。典型的叠积层式基板包括核层和其双侧的高密度布线层(叠积层)。核层为封装提供所需刚度,其厚度可以是400... 详细信息

由于具有高密度布线能力和相对合理的成本,在特殊用途集成电路(ASI Cs)的倒装封装中使用叠积层式(bui l d-up)有机基板非常受欢迎。典型的叠积层式基板包括核层和其双侧的高密度布线层(叠积层)。核层为封装提供所需刚度,其厚度可以是400μm,600μm,或800μm。新兴的无核基板技术去除了核层,可以提高布线密度,减薄封装,和获得更好的电气性能。本文比较了8层有核与无核基板在31mm和900锡球封装中的核心供电网络(PDN)的性能。在50MHz.2GHz.域内,我们用矢量网络分析仪测得两路高频S参数以分析相应的PDN。测量与模拟结果十分吻合。另外,我们还在时域内模拟计算了PDN对瞬变电流的响应。

关键词：供电网络无核基板倒装封装叠积层式基板电气性能

Levels of matrix metalloproteinase-1 and tissue inhibitors of metalloproteinase-1 in gastric cancer

在线全文

学校读者我要写书评

暂无评论

World Journal of Gastroenterology 2011年第16期17卷 2109-2112页

作者： ozgur Kemik Ahu Sarbay Kemik Az.z.Sümer Ahmet Cumhur Dulger Mine Adas Huseyin Begenik Ismail Hasirci Oz.an Yilmaz.Sevim Purisa Erol Kisli Sefa Tuz.n Cetin Kotan Department of General Surgery Yuzuncu Y1l University Medical Faculty Department of Biochemistry Cerrahpasa Medical Faculty University of Istanbul Department of Gastroenterology Medical FacultyUniversity of Yüzüncü Y1l Department of Endocrinology Okmeydani Education and Research Hospital Department of Internal Medicine Medical FacultyUniversity of Yüzüncü Y1l Department of Biostatistics Istanbul Medical FacultyUniversity of Istanbul II.General Surgery Haseki Education and Research Hospital

AIM:To evaluate the levels of preoperative serum matrix metalloproteinase-1 (MMP-1) and tissue inhibitor of metalloproteinase-1 (TIMP-1) in gastric ***:One hundred gastric cancer patients who underwent gastrectomy were enrolled in this *** serum concentrations of MMP-1 and TIMP-1 in these patients and in fifty healthy controls were determined using an enz.me-linked immunosorbent ***:Higher serum MMP-1 and TIMP-1 levels were observed in patients than in controls (P z.,depth of wall invasion,lymph node metastasis,liver metastasis,perineural invasion,and pathological *** were not significantly associated with age,gender,tumor location,or histological ***:Increased MMP-1 and TIMP-1 were associated with gastric *** these markers are not good markers for diagnosis,these markers show in advanced gastric cancer.

关键词： Gastric cancer Matrix metalloproteinase-1 Tissue matrix metalloproteinase-1