نتایج جستجو برای: strength

تعداد نتایج: 206587  

Journal: :journal of dentistry, tehran university of medical sciences 0
farideh geramipanah associate professor, dental implant research center and department of prosthodontics, school of dentistry, tehran university of medical sciences, tehran, iran. masoumeh ghandari dentist, private practice, tehran, iran. somayeh zeighami assistant professor, dental research center and department of prosthodontics, school of dentistry, tehran university of medical sciences, tehran, iran.

failure of soft liners depends mostly on separation from the denture base resin; therefore measurement of the bond strength is very important. the purpose of this study was to compare the tensile bond strength of two soft liners (acropars, molloplast-b) to denture base resin before and after thermocycling.twenty specimens fromeach of the two different soft liners were processed according to the...

Journal: :iranian red crescent medical journal 0
hosein kouhzad mohammadi department of physical therapy, faculty of rehabilitation sciences, shahid beheshti university of medical sciences, tehran, ir iran khosro khademi kalantari department of physical therapy, faculty of rehabilitation sciences, shahid beheshti university of medical sciences, tehran, ir iran; department of physical therapy, faculty of rehabilitation sciences, shahid beheshti university of medical sciences. opposite to bou-ali hospital, damavand avenue, postal code: 1616913111. tehran, ir iran. tel: +98-2177561407, fax: +98-2177561406 sedighe sadat naeimi department of physical therapy, faculty of rehabilitation sciences, shahid beheshti university of medical sciences, tehran, ir iran mohammad pouretezad department of physical therapy, faculty of rehabilitation sciences, ahvaz jundishapur university of medical sciences, ahvaz, ir iran esmaeil shokri department of physical therapy, faculty of rehabilitation sciences, ahvaz jundishapur university of medical sciences, ahvaz, ir iran mojdeh tafazoli department of physical therapy, faculty of rehabilitation sciences, ahvaz jundishapur university of medical sciences, ahvaz, ir iran

background due to the fundamental role of gripping in most upper limb activities, grip strength promotion is a chief goal in the treatment of patients with upper limb musculoskeletal disorders. kinesio taping is a novel and effective therapeutic technique believed to facilitate muscle contraction through stimulating mechanoreceptors and increasing the sensory feedback around the taped region. o...

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 ...

Journal: :جنگل و فرآورده های چوب 0
یحیی همزه استاد، گروه علوم و صنایع چوب و کاغذ، دانشکدة منابع طبیعی دانشگاه تهران، کرج، ایران رحیم یدالهی کارشناس ارشد، گروه علوم و صنایع چوب و کاغذ، دانشکدة منابع طبیعی دانشگاه تهران، کرج، ایران حسین مهدوی دانشیار، گروه شیمی پلیمر، دانشکدة شیمی دانشگاه تهران، تهران، ایران شادمان پورموسی استادیار، گروه علوم و صنایع چوب و کاغذ، دانشگاه آزاد اسلامی واحد کرج، کرج، ایران

in order to simultaneously improve wet and dry strengths of paper and decrease environmental issues related to the wet strength resins, in this study effect of application method of wet strength additives on paper properties was investigated. wet strength resins were applied in four methods including spraying an aqueous glyoxal solution on to the surface of wet paper, addition of aminated polya...

پایان نامه :وزارت بهداشت، درمان و آموزش پزشکی - دانشگاه علوم پزشکی و خدمات بهداشتی درمانی شهید صدوقی یزد - دانشکده دندانپزشکی 1388

چکیده ندارد.

Journal: :civil engineering infrastructures journal 0
amir arefi shahrood university of technology seyed fazlolah saghravani shahrood university of technology reza mozaffari naeeni shahrood university of technology, minab toos new technologies

nano materials have been widely used in laboratory and industrial scales in order to improve various properties of concrete and concrete mixture. the mainstream practice of the researches in this field is to add metallic nano-particles into the concrete mixture. the present research focuses on adding micro-nano air bubbles (mnab) into water before mixing it with aggregate and cement mixtures. i...

Journal: :journal of advanced materials and processing 0
javad moradgholi isfahan university of technology amad monshi isfahan university of technology khosro farmanesh malek ashtar university of technology

in this work, the strength of cold roll bond of the commercially pure titanium (cp ti) sheet and the effect of tio2 nanoparticles on bond strength was investigated. through the accumulative roll bonding process, which is considered among the important severe plastic deformation processes, the creation of suitable bonds plays a significance role in the ultimate strength of the bond. thus, resear...

Journal: :geopersia 2013
amin jamshidi mohammad reza nikudel mashalah khamechiyan

salt crystallization is one of the most important weathering agents and may limit the durability of building stones. salt crystallization induces stresses inside the pores of stones. consequently, stone durability is closely related to its physical properties and strength. the purpose of this study was to propose a statistical model for estimating stone durability against salt crystallization c...

Journal: :international journal of civil engineering 0
a.r. khaloo molaee a.

an experimental program was carried out to investigate the behavior of steel, fiber reinforced concrete (sfrc) under abrasion and cycles of freeze and them. compression and flexural tests were also performed in order to reach a comprehensive conclusion of the response. in total, over 200 specimens were tested the test variables included two concrete strength., (i. e., 28 mpa as normal strength ...

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