نتایج جستجو برای: strength

تعداد نتایج: 206587  

Journal: :علوم و تکنولوژی پلیمر 0
عطیه آب خضر محمد عطایی علی اصغر بهنام قادر لاله صلحی تورج عبادزاده

the incorporation of boehmite nano-particles and its effects on the mechanical properties and bond strength of an experimental dental adhesive were studied.an adhesive solution containing ethanol, bis-gma, tmptma, hema and photo-initiator system (camphorquinone and dmaema) was prepared. silanized boehmite nano-particles were incorporated into the adhesive in different concentrations of 0, 0.2, ...

Journal: :علوم و فنون بسته بندی 0
امری مقدسه اکبری احمدرضا سرائیان رحیم یدالهی

continuous improvement in performance is essential for the success of the paperboard industry. strength improvement has always been an important consideration for papermakers. strength increasers are critical components for manufacturing of paperboard. these materials provide not only the required strength quality to paper products but also can improve the machine productivity and process effic...

ژورنال: مجله دندانپزشکی 1998
رشیدان, نیره , گرامی پناه, فریده ,

  In this study, porcelain bond strength to three different alloys of Gold-base, pd-Ag and base-Metal were compared and the effect of repeated porcelain sintering on bond strength was evaluated. The obtained results showed best bond strength of porcelain with Gold-base alloy. Pd-Ag and Base-metal alloys showed less strength respectively. During repeated sintering of porcelain, bond strength has...

Journal: :journal of dentistry, tehran university of medical sciences 0
f. golbidi assistant professor, department of prosthodontics, school of dentistry, isfahan university of medica t. mousavi dentist, private practice

objective: the purpose of this study was to evaluate the transverse strength of one brand of denture base material repaired with two autopolymerized acrylic resins with and without wire reinforcement. materials and methods: eighty samples (2.5×10×65 mm3) were fabricated and divided into five groups. the control group was left intact. groups b and d specimens were repaired with autopolymerizing ...

Journal: :journal of dentistry, tehran university of medical sciences 0
zahra bahrololoomi associate professor, department of pedodontics, member of social determinants of oral health research center, faculty of dentistry, shahid sadoughi university of medical sciences, yazd, iran mona kabudan pedodontist leila gholami assistant professor, department of periodontics, faculty of dentistry, zahedan university of medical sciences, zahedan, iran

o bjectives: bond strength of composite resin to enamel and dentin of primary teeth is lower than that to permanent teeth; therefore, it may compromise the ad- hesive bonding. new methods, such as laser application have been recently intro- duced for tooth preparation. the purpose of this study was to evaluate the effect of tooth preparation with bur and er:yag laser on shear bond strength of c...

Journal: :علوم زیستی ورزشی 0
محبوبه مرادی کارشناس ارشد فیزیولوژی ورزشی دانشگاه تهران

the aim of this study was to determine the effect of eight-week resistance training on muscular strength and balance in men with multiple sclerosis (ms). for this purpose, out of 40 ms patients in iran ms society, 18 patients (mean age 34.05±7.8 yrs; mean expanded disability status scale 2.94±1.54 score; mean weight 67.83±11.58 kg; and mean body mass index 22.40±3.81kg/m2) were randomly divided...

2014
Raymond Vanholder

s submitted to the annual Congresses. In 1993, he was elected President of the Society. Among other achievements, his Presidency saw the establishment of the administrative, financial and legal structures of the Society in London which helped secure its long-term stability, and the start of the relocation of the Registry from the UK to the Netherlands. His involvement in securing the inclusion ...

Today concrete is most generally utilized development material in the world due to its strength and sturdiness properties. To attain good strength, curing of concrete is important so we introduce the concept of self-curing concrete rather than immersion or sprinkle curing to avoid water scarcity. It was observed that water solvent polymers can be utilized as a self-curing agent, i.e. polyethyle...

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