نتایج جستجو برای: cr2o3

تعداد نتایج: 857  

Journal: :Coatings 2023

This study utilized the exceptional optical and electrical properties of polypyrrole (Ppy) to fabricate high-performance optoelectronic devices. The synthesis porous-spherical Cr2O3-Cr(OH)3-Ppy/Ppy nanocomposite thin film was achieved by preparing a second Cr2O3-Cr(OH)3-Ppy on initial Ppy using K2Cr2O7 as an oxidant. nanocomposite’s were thoroughly characterized, including XRD absorbance analys...

Journal: :The Journal of the Society of Chemical Industry, Japan 1965

Journal: :The Journal of the Society of Chemical Industry, Japan 1960

Journal: :Journal of Nuclear Materials 2021

The anticipated benefits of large grains in Cr2O3-doped UO2 pellets include improved mechanical and fission gas retention properties. To support the assessment release (FGR) from doped pellets, impact doping on diffusivity for in-reactor conditions must be understood. In this work, we tackle issue by informing model within BISON fuel performance code using material models developed at atomic sc...

ضیا وافی مهدی هاشمی نادر پروین,

در این پژوهش پوشش‌های نانوساختار Cr2O3 و Cr2O3-20YSZ از طریق فرآیند پاشش پلاسمایی اتمسفری(APS) پاشش داده شد و متعاقب آن خواص مکانیکی آن‌ها نظیر چقرمگی شکست، سختی و استحکام چسبندگی ارزیابی و با یکدیگر مقایسه گردیدند. بدین منظور، ابتدا نانوپودرهای Cr2O3 و YSZ از طریق 5 ساعت آسیاکاری در آسیاب سیاره‌ای با انرژی بالا تولید شده و سپس ب...

Journal: :npj quantum materials 2023

Antiferromagnetic states with no stray magnetic fields can enable high-density ultra-fast spintronic technologies. However, the detection and control of antiferromagnetic Neel vectors remain challenging. Linear magnetoelectric antiferromagnets (LMAs) may provide new pathways, but applying simultaneous electric fields, necessary to in LMAs, is cumbersome impractical for most applications. Herein...

Journal: :Minerals 2023

A characterization study of chromite ore from South Africa was conducted using bulk assays, X-ray diffraction, optical, scanning electron microscopy (SEM), automated probe microanalysis (EPMA) and quantitative evaluation mineral by (QEMSCAN) mineralogical techniques, EPMA. The aim to identify all major gangue impurities, the degree liberation, possible beneficiation options. material assayed 40...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه زنجان - دانشکده علوم پایه 1392

نانوذرات اکسید کروم(cr2o3-nps) با ساختار رومبوهدرال با استفاده از نیترات نه آبه cr(no3)3•9h2oبه عنوان منبع کروم و اوره ch4no2به عنوان باز با استفاده از روش هیدروترمال تحت شرایط مختلف سنتز شدند. نانوذرات سنتز شده توسط تکنیک های xrd، sem، dls، uv-visو ft-ir شناسایی شدند. تأثیر عوامل مختف، شامل: غلظت مواد اولیه، نسبت مولی نمک به باز، دمای واکنش و زمان بر اندازه نانوذرات مورد بررسی قرار گرفت. نانوذ...

Journal: :Journal of animal science 1980
J Waller N Merchen T Hanson T Klopfenstein

Four sampling schedules and three digesta markers were investigated with abomasally-cannulated steers. Nonammonia nitrogen flow through the abomasum was used as the criterion for comparison. A single diet, consisting of ground corn cobs and cane molasses and supplemented with soybean meal to 11.5% crude protein, was used. Each steer was fed hourly to maintain a constant digesta flow. Digesta ma...

Journal: :Journal of animal science 2004
W D Myers P A Ludden V Nayigihugu B W Hess

A procedure was developed for the rapid analysis of titanium dioxide (TiO2) concentrations in feed and fecal samples. Samples were digested in concentrated H2SO4 for 2 h, followed by addition of 30% H2O2, and absorbance was measured at 410 nm. Standards were prepared by spiking blanks with increasing amounts of TiO2, resulting in a linear standard curve. Complete analysis using this procedure c...

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