نتایج جستجو برای: strength properties

تعداد نتایج: 1040873  

Journal: :زمین شناسی مهندسی 0
سعید هاشمی طباطبایی عطا آقایی آرایی

this paper describes the results of a study which was primarily directed to the determination of geotechnical properties of fine and coarse grain soils stabilized by lime obtained from taleghan, northwest of tehran to assess its suitability as construction material. soils were treated with lime mixtures in various portions between 3 to 9 percents by weight. the samples were cured for different ...

Journal: :journal of reports in pharmaceutical sciences 0
katayoun derakhshandeh department of pharmaceutics, faculty of pharmacy, kermanshah university of medical sciences, kermanshah 67149-67346, and nano drug delivery researcuh center, kermanshah university of medical sciences, kermanshah, iran razieh abdollahipour

aphthous stomatitis and oral lichen planus may be found on mucosal surfaces including the gingival, tongue and lips. these conditions frequently require topical corticosteroid medication such as triamcinolone acetonide (ta). recently, studies showed that divalent inorganic salts such as zinc sulphate (znso 4 ) are recommended for treatment of aphthouse, herpes ulcers and other ulcers in the bod...

In this work, the effects of carbon content and manganese sulfide addition on the microstructure and mechanical properties of copper steel parts have been studied. Steel powder mixture containing 2%Cu and different graphite contents with and without MnS additions were compacted, sintered and forged to almost full density. Forged samples, with near theoretical densities, were tested for tensile,...

ژورنال: مسکن و محیط روستا 2020
Dormohamadi, Mansoure, Fotuhi Ardakani, Mohsen, Rahimnia, Reza,

Iran is one of the oldest countries in the world benefiting from adobe-based architecture; a method which has long been forgotten in the contemporary architecture of country. Considering the important role of Earth Blocks such as adobe in the world’s contemporary architecture and the wealth of Iranian adobe-based monuments, it is necessary to continue contemplating on ways to optimize adobe to ...

Journal: :journal of dentistry, tehran university of medical sciences 0
sara tavassoli-hojjati department of pediatric dentistry, dental school, shahed university, tehran, iran. mohammad atai iran polymer and petrochemical institute (ippi), tehran, iran. roza haghgoo department of pediatric dentistry, dental school, shahed university, tehran, iran. sara rahimian-imam department of pediatric dentistry, dental school, zahedan university of medical sciences, zahedan, iran. somayeh kameli department of pediatric dentistry, dental school, shahed university, tehran, iran. fatemeh ahmaian-babaki department of pediatric dentistry, dental school, shahid beheshti university of medical sciences, tehran, iran.

the aim of this study was to investigate the mechanical properties (flexural strength, micro-shear bond strength) and remineralizing potential of fissure sealants by adding various concentrations of β-tricalcium phosphate nanoparticles.this in-vitro study consisted of five experimental groups containing prepared nano-fisssure sealants (1-5 wt.% β-tcp nanoparticles) and two control groups contai...

Journal: :مهندسی متالورژی و مواد 0
عیسی امینی جعفر خلیل علافی رضا چاره خواه زهرا معروفی

in this study, the microstructure and properties of foam glass obtained as a result of the interaction of the waste glass with sic as the foaming agent and fe2o3 as the oxidizing agent have been investigated using scanning electron microscopy (sem), as well as three-point bending and pycnometery tests. first, the temperature and optimized amount of sic for making foam glass was determined. the ...

Journal: :علوم و تکنولوژی پلیمر 0
زینب عبادی محمد عطایی مرتضی ابراهیمی

the effect of nanoparticle diamond incorporated in an experimental dental adhesive formulation is valuated by examining the mechanical properties and shear bond strength of the system. diamond nanoparticles were incorporated into the dentin adhesive system in different concentrations of 0, 0.05, 0.1, 0.2, 0.5, and 1.0 weight percentages. the suspensions were ultrasonicated to facilitate the nan...

Journal: :علوم و تکنولوژی پلیمر 0
حامد غفارزاده زارع احمد غضنفری مقدم حسن هاشمی پور رفسنجانی

during the past two decades the use of lignocellouse fibers in reinforcing composites has attracted much research activities. in the present work, date palm fiber was used for production of composites compatible withliving environment. the fibers were pre-treated chemically to remove impurities. in order to verify and compare the effectiveness of the pretreatment methods, lignin, ash, moisture ...

ژورنال: گلجام 2007
بازیار , قاسم, داداشیان, فاطمه, رحیمی, شهرام , منتظر, مجید,

Special properties of Iranian wool such as elasticity compared with Merino wool leads to more popularity of Persian carpet at an international level. By using of finishing process it is possible to improve some of the physical properties of wool fibers such as fleece modification, increasing of lightness and whiteness and producing a smoother surface that result a better quality carpet. In this...

Amir Mahmoudzadeh Hasan Sousani,

With many years of construction and application of common concrete, researchers have always been searching for a better composition. One of the notable ideas for achieving such a composition is using recycled materials. One of the materials which is suitable for environment and constant development is damaged tires .For studying mechanical properties of concrete containing tire particles, a ser...

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