نتایج جستجو برای: color metallography

تعداد نتایج: 121822  

Journal: : 2021

A study of the effect cold air plasma on cathode nickel grade N-1 has been carried out. The changes in microstructure, macro- and microstresses, as well static displacements atoms from equilibrium positions are investigated. By method aim metallography it was shown that microstructure does not change under exposure. X-ray structural studies have established level microstresses when exposed to p...

Journal: :بینا 0
نادیا شجاعی n shojaee shahid beheshti university of medical sciencesشعبه بین الملل دانشگاه علوم پزشکی شهید بهشتی ابراهیم جعفرزاده پور e jafarzadehpour iran university of medical scienceدانشگاه علوم پزشکی ایران محمدرضا منصوری mr mansouri دانشگاه علوم پزشکی تهران مهدی یاسری m yaseri گروه اپیدمیولوژی و آمار- دانشگاه علوم پزشکی تهران امیرکامران نیکوسخن ak nikoosokhan انجمن دیابت ایران

purpose: to evaluate color vision in patients with type ii diabetes mellitus without diabetic retinopathy and compare the results with those of age- and sex- matched normal individuals. methods: this descriptive, comparative study was conducted on 100 diabetic patients without any sign of retinopathy and 100 age- and sex-matched normal subjects. color vision was evaluated using ishihara and far...

Journal: :Journal of the Illuminating Engineering Institute of Japan 1990

2014
Juan Asensio-Lozano Beatriz Suárez-Peña George F. Vander Voort

6063 aluminum anodized extrusions may exhibit a common surface defect known as streaking, characterized by the formation of narrow bands with a surface gloss different from the surrounding material. The origin of this banding lies in the differential surface topography produced after etching during the anodizing stage, shown to be connected to certain microstructural characteristics. The presen...

Journal: :Journal of Physics: Conference Series 2021

Abstract The results of experiments on low-energy implantation AISI 321 stainless steel by nitrogen ions are presented. treatment was carried out a pulsed beam obtained using ballistic ion focusing system. surface modification occurs with the formation two-layer structure, which is typical for ion-plasma nitriding processes steels. thickness modified layer can reach 27 μm after 1 hour treatment...

Journal: :Journal of Mathematical Sciences 2021

By using the developed finite-element models, we perform numerical investigation of nonstationary temperature fields and kinetics microstructural phase transformations in base material WWER -1000 reactor vessel (15Kh2NMFА steel) under conditions submerged-arc cladding protective anticorrosion layers austenitic materials. We comparative analysis results simulation obtained by two methods predict...

پژمان شقاقی

هانــری لُـــهِ فور، جامعه شــناس معاصــر فرانســوی بــا مطــرح کــردن ایــده «حــق بــه شــهر<span style="font-family: BMitra-SC700; font-size: 12pt; color: #0...

Journal: :The Journal of the Institute of Television Engineers of Japan 1966

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