检索结果-南通市图书馆

Correlation of work function and stacking fault energy through Kelvin probe force microscopy and nanohardness in diluteα-magnesium

引用

Journal of Magnesium and Alloys 2024年第1期12卷 237-250页

作者： Yigit Türe Ali Arslan Kaya hüseyin aydin Jiang Peng Servet Turan Eskisehir Technical University Porsuk Vocational SchoolElectronics and Automation DepartmentProgram of MechatronicsEskisehirTurkey Mugla Sitki Kocman University Engineering FacultyMetallurgy and Materials Engineering DepartmentMuglaTurkey hüseying Aydın TUBITAK MRCTurkey Jiang Peng Chongqing UniversityChina Eskisehir Technical University Engineering FacultyMaterials Science and Engineering DepartmentEskisehirTurkey

Electronic interactions of the Group 2A elements with magnesium have been studied through the dilute solid solutions in binary Mg-Ca,Mg-Sr and Mg-Ba *** investigation incorporated the difference in the‘Work Function'(ΔWF)measured via Kelvin Probe Force Microscopy(KPFM),as a property directly affected by interatomic bond types,*** electronic structure,nanoindentation measurements,and Stacking Fault Energy values reported in the *** was shown that the nano-hardness of the solid-solutionα-Mg phase changed in the order of Mg-Ca>Mg-Sr>***,it was shown,by also considering the nano-hardness levels,that SFE of a solid-solution is closely correlated with its‘Work Function'***-hardness measurements on the eutectics andΔWF difference between eutectic phases enabled an assessment of the relative bond strength and the pertinent electronic structures of the eutectics in the three *** withΔWF and at least qualitative verification of those computed SFE values with some experimental measurement techniques were considered important as those computational methods are based on zero Kelvin degree,relatively simple atomic models and a number of *** asserted by this investigation,if the results of measurement techniques can be qualitatively correlated with those of the computational methods,it can be possible to evaluate the electronic structures in alloys,starting from binary systems,going to ternary and then multi-elemental *** investigation has shown that such a qualitative correlation is *** all,the SFE values are not treated as absolute values but rather become essential in comparative investigations when assessing the influences of alloying elements at a fundamental level,that is,free electron density *** study indicated that the principles of‘electronic metallurgy'in developing multi-elemental alloy systems can be followed via practical experimental methods,i.e.ΔWF measurements using KPF

关键词： Mg alloys Dilute alloys Work function Stacking fault energy Kelvin probe force microscopy Short range order Miedema Nanoindentation Eutectics

来源：

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

Effect of Microstructure on Exhaust Manifold Cracks Produced From SiMo Ductile Iron

引用

Journal of Iron and Steel Research International 2009年第3期16卷 32-36页

作者： havva Kazdal Zeytin Ceylan Kubilay hseyin aydin Ali Aslan Ebrinc Bilal Aydemir TUBITAK MAM Materials Institute Ford Otosan A S

Ductile cast irons are used as high temperature materials in internal combustion engines,because they are microstructurally stable at high operating temperatures. SiMo granular graphite cast irons contain Fe2MoC and M6C carbide precipitates due to their higher concentration of both silicon and molybdenum. The microstructure of these cast irons consists of carbides dispersed within the ferrite matrix. The microstructural change and the crack formation mechanism in manifolds produced from SiMo ductile iron are studied. Chemical analysis,optical and scanning electron microscope studies have been completed and evaluated.

关键词： SiMo alloy cast iron exhaust manifold

来源：

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

Arterial complication of irreversible electroporation procedure for locally advanced pancreatic cancer

引用

World Journal of Gastrointestinal Oncology 2016年第10期8卷 751-756页

作者： Yahya Ekici Tugan Tezcaner hüseyin Onur aydin Fatih Boyvat G?khan Moray Department of General Surgery Medical Faculty of Baskent University Department of Radiology Medical Faculty of Baskent University

Irreversible electroporation(IRE) is a non-thermal ablation technique used especially in locally advanced pancreatic carcinomas that are considered surgically *** present the first case of acute superior mesenteric artery(SMA) occlusion secondary to pancreatic IRE procedure that has not been reported before in the literature.A 66-year-old man underwent neoadjuvant chemoradiotherapy for locally advanced pancreatic ductal *** procedure was applied to the patient during laparotomy under general *** finishing the procedure,an acute intestinal ischemia was detected.A conventional vascular angiography was performed and a metallic stent was successfully placed to the SMA and blood flow was *** is important to be careful in such cases of tumor involvement of SMA when evaluating for IRE procedure of pancreatic tumor.

关键词： Irreversible electroporation Mesenteric artery occlusion Locally advanced pancreatic cancer Superior mesenteric artery

来源：

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

Platelet aggregation responses in type 2 diabetic patients

引用

health 2010年第7期

作者： Fatma Mutlu Kukul Güven Abdülkerim Yilmaz hüseyin aydin Ilhan Korkmaz

来源：评论

学校读者我要写书评

暂无评论

Effect of Intercritical Annealing Parameters on Dual Phase Behavior of Commercial Low-Alloyed Steels

引用

Journal of Iron and Steel Research International 2010年第4期17卷 73-78页

作者： aydin hüseyin Kazdal Zeytin havva Kubilay Ceylan TUBíTAK Marmara Research Center(MAM) Materials Institute

The effects of some intercritical annealing parameters including heating rate, soaking temperature, soaking time, and quench media on the microstructure and mechanical properties of cold-rolled dual phase steel were studied. The microstructure of specimens quenched after each annealing stage was analyzed using optical microscope. The tensile properties, determined for specimens submitted to complete annealing cycles, were influenced by the volume fractions of multiphases （originated from martensite, bainite, and retained austenite）, which depend on the annealing process parameters. The results obtained showed that the yield strength and the ultimate tensile strength increase with increasing the intercritical temperature and cooling rate. This can be explained by higher martensite volume ratio with the increased volume fraction of austenite formed at the higher temperatures and cooling rates.

关键词： dual phase steel carbon steel alloyed steel mechanical test metallography heat treatment

来源：

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

Assessment and Analysis of Rockfall-Caused Tree Injuries in a Turkish Fir Stand:A Case Study from Kastamonu-Turkey

引用

Journal of Mountain Science 2012年第2期9卷 137-146页

作者： Abdurrahim aydin Nesibe KSE nal AKKEMK hüseyin YURTSEVEN Düzceüniversity Faculty of ForestryKonuralp Campus Faculty of Forestry Department of Forest BotanyIstanbul University Faculty of Forestry Department of Surveying and PhotogrammetryIstanbul University

Rockfalls can cause serious damage to people,property,facilities and transportation ***,rockfalls are major hazards in mountain areas with negative impacts on individual trees and forested *** conducted a study of rockfall events on 117 mapped(91% of total trees in the stand with>1.3 m in height and>5 cm diameter at breast height)Turkish fir trees(Abies bornmuelleriana Mattf.)in a stand within the Kayaarkasi-Topular Village,Inebolu district, Kastamonu province of *** study site of 0.35 ha is located on the transition zone of frequently passing rockfall fragments(～40 cm in diameter) generally causing healable *** of trees and injuries were recorded and analysed as to injury number,height and *** correlation analysis were used to investigate the relationships between:a)diameter at breast height and number of injuries per tree,b)diameter at breast height and total injury size,c)the number of injuries and total injury size and d)the number of injuries per tree and distance from the source of the rockfall *** indicate that the average height of injury,average number of injuries and average injury area to be 81.3 cm(STDEV:49.8),7.46(STDEV:4.4)and 628.6 cm2 (STDEV:678.2),*** total 84% of all injuries were recorded within 160°sector at the upslope side of trees and callus tissue that had closed wounds was observed in 79.1% of all injuries. Furthermore 14.5% of injured trees had callus tissue in the process of closing wounds while 6.4% of injuries had not formed any callus *** most common injury types were bark and wood injuries. Bivariate correlation analysis indicated strong relationships between diameter at breast height and the number of injuries(rs=0.524),injury number and total injury area(rs=0.653)and distance from rockfall area and injury numbers relations(rs=-0.518).A weaker relationship was found between diameter at breast height and total injury area(rs=0.363).These results

关键词： Tree injuries Rockfall Past event assessment Turkish fir Turkey

来源：

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

A VhDL application for kinematic equation solutions of multi-degree-of-freedom systems

引用

Journal of Zhejiang University-Science C(Computers and Electronics) 2014年第12期15卷 1164-1173页

作者： hüseyin Oktay ERKOL hüseyin DEMíREL Department of Mechatronics Engineering Faculty of Technology Karabük University Department of Electrical and Electronics Engineering Faculty of Engineering Karabük University

As kinematic calculations are complicated, it takes a long time and is difficult to get the desired accurate result with a single processor in real-time motion control of multi-degree-of-freedom(MDOF) systems. Another calculation unit is needed, especially with the increase in the degree of freedom. The main central processing unit(CPU) has additional loads because of numerous motion elements which move independently from each other and their closed-loop controls. The system designed is also complicated because there are many parts and cabling. This paper presents the design and implementation of a hardware that will provide solutions to these problems. It is realized using the Very high Speed Integrated Circuit hardware Description Language(VhDL) and field-programmable gate array(FPGA). This hardware is designed for a six-legged robot and has been working with servo motors controlled via the serial port. The hardware on FPGA calculates the required joint angles for the feet positions received from the serial port and sends the calculated angels to the servo motors via the serial port. This hardware has a co-processor for the calculation of kinematic equations and can be used together with the equipment that would reduce the electromechanical mess. It is intended to be used as a tool which will accelerate the transition from design to application for robots.

关键词： Multi-degree-of-freedom systems Kinematics Co-processor Serial communication Six-legged robot

来源：

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

Effect of heat Treatment on Microstructure,Mechanical Properties and Fracture Behaviour of Ship and Dual Phase Steels

引用

Journal of Iron and Steel Research International 2011年第8期18卷 65-72页

作者： Fatih hayat hüseyin Uzun Metallurgy and Materials Engineering Department Engineering FacultyKarabuk University Metallurgy Education Department Technical Education FacultySakarya University

Grade A （GA） and high strength steel Dh36 ship steels possessing different chemical compositions were used, and strength properties of GA steel and Dh36 steel were compared. Additionally, 4 types of dual phase （DP） steels with different martensite volume fractions （MVFs） were produced from GA steel by means of heat treatment and they were compared with other steels through conducting mierostructure, microhardness, tensile and impact tests. The fracture surfaces of specimens （Dh36, GA and DP steels） exposed to tensile and Charpy impact tests were investigated by scanning electron microscope. Furthermore, it was found that the specimens quenched from 800 and 900℃ had better strength than Dh36 steel. The tensile test results indicated that the tensile strength of DP steel water quenched from 900℃ was 3 times that of GA steel and twice that of Dh36 steel.

关键词： Grade A ship steel Dh36 ship steel dual phase steel martensite mechanical property fracture

来源：

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

Effects of Annealing on Thermoluminescence Peak Positions and Trap Depths of Synthetic and Natural Quartz by Means of the Various heating Rate Method

引用

Chinese Physics Letters 2012年第8期29卷 250-252页

作者： hüseyin Toktamiş A.Necmeddin Yazici Department of Engineering Physics University of Gaziantep27310 GaziantepTurkey

Some environmental and experimental variables such as annealing process alter the structure of glow curves of some thermoluminescence *** investigate the effects of annnealing on thermoluminescence peaks of synthetic and natural quartz at different heating *** experimental results show that the peak temperatures of glow peaks in annealed samples shift to higher temperature *** amount of shifting is higher for low temperature peaks than high temperature *** trap depths of annealed and unannealed samples of both synthetic and natural quartz are also obtained by various heating rate *** is noted that the annealing process affects the trap depth of all glow peaks and the trap depth increases after the annealing process.

关键词： annealed annealing quartz

来源：

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

An Active Image Forgery Detection Approach Based on Edge Detection

引用

Computers, Materials & Continua 2023年第4期75卷 1603-1619页

作者： hüseyin Bilal Macit Arif Koyun Department of IT Systems and Technologies Mehmet Akif Ersoy UniversityBucak Z.T.School of Applied Technology and BusinessBurdur15300Türkiye Department of Computer Engineering Suleyman Demirel UniversityEngineering FacultyIsparta32200Türkiye

Recently, digital images have become the most used data, thanks tohigh internet speed and high resolution, cheap and easily accessible digitalcameras. We generate, transmit and store millions of images every *** of these images are insignificant images containing only personal ***, in many fields such as banking, finance, public institutions,and educational institutions, the images of many valuable objects like IDcards, photographs, credit cards, and transaction receipts are stored andtransmitted to the digital environment. These images are very significantand must be secured. A valuable image can be maliciously modified by anattacker. The modification of an image is sometimes imperceptible even by theperson who stored the image. In this paper, an active image forgery detectionmethod that encodes and decodes image edge information is proposed. Theproposed method is implemented by designing an interface and applied on atest image which is frequently used in the literature. Various tampering attacksare simulated to test the fidelity of the method. The method not only notifieswhether the image is forged or not but also marks the tampered region ofthe image. Also, the proposed method successfully detected tampered regionsafter geometric attacks, even on self-copy attacks. Also, it didn’t fail on JPEGcompression.

关键词： Image forgery image tampering edge detection

来源：

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

欢迎您,

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

请选择保存的检索档案：

请选择收藏分类：

通借通还

欢迎您,

建议与咨询 留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

请选择保存的检索档案： 新增检索档案 确定 取消

请选择收藏分类： 新增自定义分类 确定 取消

通借通还

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

请选择保存的检索档案：

请选择收藏分类：