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Traces of Defects in the electronic Structure of Porous ni—Ti Alloys

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Journal of materials Science & Technology 2013年第4期29卷 344-348页

作者： O.m.Ozkendir E.Cengiz E.Tirasoglu mehmet Kaya I.H.Karahan n.Orhan Tarsus Technical Faculty of Education Mersin UniversityTarsusTurkey Institute for molecular Science UVSOR FacilityOkazaki 444-8585Japan Science Faculty Department of PhysicsKaradeniz Technical UniversityTrabzonTurkey Vocational School Adiyaman University.Adiyaman 02040Turkey Department of mechanical Engineering Texas A&M UniversityCollege StationTX 77843USA Faculty of Arts and Sciences Department of PhysicsMustafa Kemal UniversityHatayTurkey Faculty of Technology Department of Metallurgy and Material EngineeringFirat UniversityElazigTurkey

The electronic structures of ni-Ti shape-memory alloy samples were investigated by X-ray absorption fine structure （XAFS） spectroscopy both experimentally and theoretically. In the experimental section, the samples were measured at low temperature to determine the persistent traces of both preheating process and atomic concentration effects on the crystal and electronic structure by X-ray absorption near-edge structure （XAnES） spectroscopy. As a second step, the extended-X-ray absorption fine structure （EXAFS） calculations, which are based on different choices of one electron potentials according to Ti coordinations by using the real space multiple scattering method FEFF 8.2 code, were performed. The crystallographic and electronic structures of the porous ni-Ti alloys were tested at various temperatures ranging from 5 to 1323 K.

关键词： electronic structure Porous ni-Ti alloys Shape memory effect Transition metals

4-[α-(苯甲酰甲基)苄基]-1,3-二苯基-2-吡唑啉-5-酮的合成与反应

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化学学报 1985年第12期43卷 1215-1221页

作者： el-SHEKEIL,A.G. HASSAn,m.A. BABAQI SHIBA,S.A. Chemistry Department Faculty of Science Sena's University Yemen Arab Republic Chemistry Department Faculty of Science Sena's University Yemen Arab Republic A.S.Chemistry Department Faculty of Science Sena's University Yemen Arab Republic Chemistry Department Faculty of Science Sena's University Yemen Arab Republic

1,3-二苯基-2-吡唑啉-5-酮（1）对查而酮（苯丙烯酰苯,2）的碱性催化加成,生成相应的michael加成物,4-[α-（苯甲酰甲基）苄基]-1,3-二苯基-2-吡唑啉-5-酮（3）,3在沸醇中经肼或羟胺处理得腙或肟（4）,4经沸乙酸处理生成1和2的吡唑啉衍... 详细信息

1,3-二苯基-2-吡唑啉-5-酮（1）对查而酮（苯丙烯酰苯,2）的碱性催化加成,生成相应的michael加成物,4-[α-（苯甲酰甲基）苄基]-1,3-二苯基-2-吡唑啉-5-酮（3）,3在沸醇中经肼或羟胺处理得腙或肟（4）,4经沸乙酸处理生成1和2的吡唑啉衍生物（5）的混合物,3的还原产物为相应的仲醇（6a～c）.Grignard试剂与3反应生成叔醇（6d～1）,新化合物的结构经元素分析,IR,1H和13C nmR证明。

关键词： OCH 吡唑啉甲基链烷基苯甲酰 ppm 二苯基二芳基苄基苯甲基芳基反应

An application of a simple computer program for neutron activation analysis

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Journal of Environmental Sciences 2001年第1期13卷 22-24页

作者： n.Abdel Basset nuclear Physics Laboratory Ain Shams UniversityFaculty of Girs-HeliopolisCairoEgypt

A simple computer program is designed for estimation of elemental concentration values in complex samples by neutron activation analysis technique. The program is applied for an Egyptian cement sample which irradiated at the Egyptian Research Reactor 1(ET RR 1). The data obtained is compared with the reported values. The time consumed for such calculations has a remarkable reduction in comparison with the routine work.

关键词： neutron activation analysis cement sample Egypt

An efficient approach to solving fractional Van der Pol-Duffing jerk oscillator

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Communications in Theoretical Physics 2022年第10期74卷 50-59页

作者： Yusry O el-Dib Department of mathematics Faculty of EducationAin Shams UniversityRoxyCairoEgypt

The motive behind the current work is to perform the solution of the Van der Pol–Duffing jerk oscillator,involving fractional-order by the simplest *** effective procedure has been introduced for executing the fractional-order by utilizing a new method without the perturbative *** approach depends on converting the fractional nonlinear oscillator to a linear oscillator with an integer order.A detailed solving process is given for the obtained oscillator with the traditional system.

关键词： Van der Pol oscillator Duffing jerk oscillator fractional oscillator non-perturbative approach numerical simulation

Influence of monovalent Bi^+doping on real composition,point defects,and photoluminescence in TlCdCl3 and TlCdI3 single crystals

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Science China materials 2017年第12期60卷 1253-1263页

作者： Daria n.Vtyurina Polina A.Eistrikh-Geller Galina m.Kuz mlcheva Victor B.Rybakov Evgeny V.Khramov Irina A.Kaurova Dmitry Yu.Chernyshov Vladimir n.Korchak Semenov Institute of Chemical Physics Russian Academy of SciencesMOSCOW 119991Russia Institute of Fine Chemical Technologies Moscow Technological UniversityMoscow 119571Russia Lomonosov State University Moscow 119992Russia national Research Center《Kurchatov Instituters》 Moscow 123182Russia Swiss-norwegian Beamlines at the European Synchrotron Radiation Facility Grenoble 38000France

The structural features and real compositions with point defects of Bi+-doped TlCdCl_3 and TlCdI_3 single crystals, grown by the Bridgman-Stockbarger technique, are first studied using the X-ray diffraction, X-ray synchrotron radiation, and EXAFS/XAnES spectroscopy. In the structures of Bi^+-doped TlCdCl_3 and TlCdI_3 crystals, the Cd, Cl, and I sites are found to be defect-free. The vacancies in the Tl sites and interstitial Bi atoms located in the vicinity of the Tl sites are detected in the structures of both samples. In the Bi^+-doped TlCdCl_3, the presence of a small amount of Bi^+ ions in the Tl^+ sites is possible. The correlation between photoluminescence bands and point defects in the refined structures are determined. Photoluminescence spectra and decay kinetics of the Bi+-doped TlCdCl_3 and TlCdI_3 demonstrate that they are attractive materials for potential applications in photonics.

关键词： single crystal growth doping crystal structure point defects photoluminescence

Analysis and Trends for Future mEmS markets

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Computer Aided Drafting,Design and manufacturing 2008年第1期18卷 102-108页

作者： IHAB el Fituri mOHamED el mahdi Ali School of Computer Science Beijing University of Aeronautics and Astronautics School of Instrumentation Science & Opto-electronics Engineering Beijing University of Aeronautics and Astronautics

micro and nano technology are engineering on an extremely small scale. Already they are being applied to create many new products. nanotechnology is predicted to become the basis for remarkably powerful and inexpensive computers, fundam.ntally new medical technologies that could save millions of lives, sensors important in military application as well as environmental protection. The main aim of this review is to concentrate information from different printed and online sources and help to make a right decision in very dynamic sensor market as well as let know what we should expect in the nearest future.

关键词： sensors market mEmS microtechnology nanosensors

Railway Accident Prevention and Infrastructure Protection

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Journal of Civil Engineering and Architecture 2016年第1期10卷 96-107页

作者： el-miloudi el-Koursi Jean-Luc Bruyelle IFSTTAR (French Institute of Science and Technology for Transport Development and Networks) Villeneuve 59666 France

Railway accident prevention and protection are a key part of a wider picture of transport safety. The rail sector thus needs to improve its knowledge of trespassing and suicide, including at level crossing, in order to work out suitable responses by analyzing measures already taken in various countries, Governments, the rail industry and road organizations have been implementing a variety of countermeasures for many years to improve railway safety. These actions are substantial and have resulted in a continuing decrease in the number and the severity of accidents. This paper presents existing suitable techniques that are used in the preventative measures targeted to reduce railway suicides, trespassing and level crossing user accidents. It describes them in terms of their capability to effectively reduce accidents, their cost-effectiveness and their integration within the railway transport system as a whole.

关键词： Railways safety infrastructure level crossing trespassing.

THE DISTRIBUTIOn PATTERnS OF BACTERIA,ATP AnD THE RelATIOnS WITH RESPIRATIOn RATES AnD PHYTOPLAnKTOn In THE CHAnGJIAnG ESTUARY AnD ITS ADJACEnT EAST CHInA SEA

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Chinese Journal of Oceanology and Limnology 1992年第3期10卷 278-289页

作者：史君贤 C.Courties 陈忠元 m.n.Hermin 宁修仁 Second Institute of Oceanography SOA Hangzhou 310012 CnRS Station Biologique 29211 Roscoff France microbiologie marine CnRS ER 223 Luminy 70 rue L. Lachamp Marseille France

Two cruises were conducted in January and July 1986 in the Changjiang (Yangtse River) Estuary and its adjacent East China Sea (30°45′ -32°00′n,121°00′-124°00′E). Direct epifluorescence counts of planktonic bacteria and determinations of ATP concentrations were made. Subsamples were taken for measurement of oxygen consumption rates and chlorophyll *** and ATP concentrations were higher in summer than in winter, highest in the river and the river mouth, and gradually lower offshore. The bacteria number was correlated positively with suspended matter, nitrates and oxygen consumption rates, and negatively with *** winter bacteria were the main contributors of ATP and the main consumers of dissolved oxygen in the whole studied area. In summer two maxima of ATP were found along the salinity gradient. The first one which coincided with the peak of turbidity near the river mouth was attributed to bacte -ria, and the second which occurred in the waters with a salinity range

关键词： bacteria ATP oxygen consumption rate Changjiang Estuary

Celecoxib-induced cholestatic liver failure requiring orthotopic liver transplantation

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World Journal of Gastroenterology 2009年第31期15卷 3937-3939页

作者： Ihab I el Hajj Shahid m malik Hany R Alwakeel Obaid S Shaikh Eizaburo Sasatomi Hossam m Kandil Department of Internal medicine Division of GastroenterologyHepatology and NutritionUniversity of Pittsburgh Medical Center Department of Pathology University of Pittsburgh

Selective cyclooxygenase-2 （COX-2） inhibitors are widely used due to their efficacy and good safety profile. However, recent case reports have described varying degrees of liver injudes associated with the use of COX-2 inhibitors. We report the case of a patient who developed acute cholestatic hepatitis progressing to hepatic failure requiring liver transplantation, following a 3-d course of celecoxib for treatment of generalized muscle aches and pains. The clinical presentation, the laboratory data, as well as the liver histopathology were supportive of the putative diagnosis of drug induced liver injury.

关键词： Celecoxib Cholestatic hepatitis Liver failure Liver transplantation