نتایج جستجو برای: in micro
تعداد نتایج: 17004157 فیلتر نتایج به سال:
"I feel very strongly that only in a magazine of the quality of IEEE Micro, where we as writers are unencumbered by stylistic manifestos and ludicrous length constraints, is [it] possible to write the quality of articles that I am interested in writing . . .I feel that it is due to your efforts that this environment exists. l am also thankful to Joe Schallan and his group for doing an outstandi...
Background and purpose: Osteoporotic fractures are much more common in older post-menopausal women and account for significant morbidity and mortality. Although age is an independent risk factor for fractures, bone micro-architecture is the predictor of subsequent fractures. Adequate calcium and Weight-bearing exercise are known to affect skeletal development, however, the effects of calcium su...
The attenuation ability of composites containing micro and nano-sized WO3 was measured and compared with the attenuation ability of composites containing micro-size and nano-sized PbO for X-rays in diagnostic energy range. For the purpose, after synthesizing nano and micro-scaled particles, different percentages of them were imbedded in poly vinyl chloride (EPVC) emulsion and prepared as shield...
This paper investigates damping ratio in micro-beam resonators based on magneto-thermo-elasticity. A unique aspect of the present study is the effect of permanent magnetic field on the stiffness and thermo-elastic damping of the micro resonators. In our modeling the theory of thermo-elasticity with interacting of an externally applied permanent magnetic field is taken into account. Combined the...
background: the use of nanotechnology has led to rapid growth in various areas. thus, health and safety issues of nanoparticles (nps) should be promptly addressed. manganese oxide (mno2) nanoparticles (nps) are typically used for biomedical and industrial applications. however, characterizing the potential human health effects of mno2 nps is required before fully exploiting these materials. the...
Abstract Background: There are contradictions about the immune modulating properties of chitin in comparison with chitosan. To respond to these contradictions, we investigated stimulatory effects of chitin micro-particles in comparison with chitosan micro-particles on L.major infected cell suspensions. Materials and methods: In this experimental study, Balb/c mice were intradermally infected wi...
Present study focuses on the micro-structural and mechanical behavior effect of friction time for similar (AISI 316-AISI 316 and AISI 304-AISI 304) and dissimilar (AISI 304-AISI 316) joint during continuous drive friction welding. The welding carried out with different friction time: 6.5, 8.5 and 10 s while kept all other conditions constant. The effect of that time on the strength, structural ...
Flame stability inside a cylindrical micro-combustor was studied. Considering occurrence of heat recirculation, the respective relations were written and with parameters such as motion speed of reactants, flame propagation speed and thermal conductivity of the combustor’s wall, flame stability and its location inside micro-combustor were studied. It was found that for each thermal conductivity ...
Abstract Background and Aim: One of the major problems with resin composite restorations is the weakness of bonding between the new and aged composites. Since appropriate micromechanical retention is necessary for the repair of aged resin composite restorations, the level of surface roughness after sandblasting can be influential in this regard. Considering the diverse composition of avail...
Comparison of micro-leakage in class V ceramic inlay restorations cemented with two different resin cements Dr. SM. Mousavinasab *- Dr. L. Pishevar * - Dr. T. Aghabeigi ** *Assistant Professor of Operative Dentistry Dept., Faculty of Dentistry, Shaheed Sadoughi Yazd University of Medical Sciences. ** Dentist Abstract Background and Aim: Resin cements are usually used for bonding ceramic inlays....
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