نتایج جستجو برای: xrd and sem methods

تعداد نتایج: 16926887  

2012
Venkata Lakshmi R. A. Venkata Lakshmi T.S.R. Murthy

The paper focuses on corrosion phenomena involving copper, corrosive sulphur and solid insulation of oil-immersed transformers. A study of the available mitigation technique such as passivation to reduce the effects of corrosion phenomena is carried out with the commercially available passivator, Irgamet 39 (Toluiltriazole dialkylamine) (ciba), with concentration of 100 ppm. The paper insulated...

Journal: :Oriental journal of chemistry 2021

The present study investigates the possible removal of Ni2+ ions from aqueous solution by using low-cost Hygrophila auriculata activated nano carbon (HA-ANC) as an adsorbent. had been prepared stem waste well; raw material was carbonized with con. H2SO4 and thermal action. Batch experiments were performed in order to calculate percentage for 90.737% at 60 oC. properties treated untreated are co...

2013
Umesh Kumar Parida Birendra Kumar Bindhani Padmalochan Nayak

In the present research program, cost effective and environment friendly gold nanoparticless were synthesized using the onion (Allium cepa) extract as the reducing agent. The nanoparticless were characterized using UV-visble, XRD, and SEM, TEM methods. The absorption peak at 540 nm was found to be broaden with increase in time indicating the polydispersity nature of the nanoparticles. The XRD r...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه علوم بهزیستی و توانبخشی - دانشکده توانبخشی 1393

abstract objectives gradual increase length and complexity of utterance (gilcu) therapy method is a form of operant conditioning. this type of treatment is very precise and controlled that is done in 54 steps in 3 speech situations consisted of monologue, reading and conversation. this study aimed to examine the effects of gilcu treatment method on reduction of speech dysfluency of school-age...

پایان نامه :دانشگاه آزاد اسلامی - دانشگاه آزاد اسلامی واحد تهران مرکزی - دانشکده ادبیات و علوم انسانی 1389

abstract abstract of thesis (includes summary, goals, execution methods, and results) story “al-obnosat al-bayza” is one of the short stories from “hanna mineh” collection. this story is a selection of lives of some humans during a voyage together, each of them is a symbol of human nature (love, mind, kindness) and examine social, cultural, and political aspects of governing system, and it...

J. Ahmed Naqash P. Narasimha Reddy,

The performances of cementitious materials as well as the efficiency of construction are adversely affected at high temperatures. Previous studies have already demonstrated that ultra-fine (alccofine) material accelerates the hydration of cement particles and subsequently improves the mechanical and durability properties of the concrete at normal temperature. Moreover, at higher temperatures th...

Journal: :Erzincan Üniversitesi Fen Bilimleri Enstitüsü Dergisi 2019

Journal: :Minerals 2021

The Afrasiab murals discovered in the northeast of Samarkand, Uzbekistan—the center ancient Silk Road—are presumed to date mid-seventh century during Sogdian era. Although previous studies have examined primary materials pigments used these using chemical and microscopic analyses, in-depth investigations pigment raw material composition not been conducted verify results studies. We applied X-ra...

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