نتایج جستجو برای: strength value and elasticity p
تعداد نتایج: 17086344 فیلتر نتایج به سال:
we show that when both sources ( lepton flavor violation sources and cp-violating phases) are present, the electric dipole moment of the electron, $d_e$, receives a contribution from the phase of the trilinear $a$-term of staus, $phi_{a_ au}$. for $phi_{a_ au}=pi/2$, the value of $d_e$, depending on the ratios of the lfv mass elements, can range between zero and three orders of magnitude a...
This work presents a systematic approach to evaluate and study the effect of fibre aspect ratio volume fraction on tensile strength, ultimate elongation, modulus elasticity, strength impact energy oil palm empty fruit bunch reinforced polyester composites. Hand-lay-up technique was used in fabrication composite materials. Response surface methodology selected factors mechanical properties polym...
Heterogeneity of biological materials, such as bone, tooth, and mollusc shells, plays a key role in determining their mechanical performance (e.g. the strength, damage tolerance, etc.). Here, we quantify heterogeneities in elasticity and inelasticity of bovine cortical bone between 100 nm and a few microns and identify a characteristic length scale (lc) of approximately 200 nm. Below lc the mec...
چکیده فارسی عنوان : تأثیر نوع پوشک بر فراوانی عفونت مجدد ادراری در شیرخواران و کودکان اساتید راهنما : دکتر پارسا یوسفی، فوق تخصص نفرولوژی کودکان، دانشیار دانشگاه دکتر منیژه کهبازی، فوق تخصص عفونی کودکان، دانشیار دانشگاه اساتید مشاور: دکتر محمد رفیعی، دکترای آمار حیاتی، دانشیار دانشگاه دکترحسن طاهر احمدی، متخصص کودکان، استادیار دانشگاه نگارش و پژوهش : فاطمه معتمد مقدمه : عفونت دستگاه...
in this study, the performance of shred tire mixed with railway subgrade is evaluated to reduce environmental vibrations caused by trains’ passage. since incorporating the shred tire seeds in soil affects on its shear strength and deformability parameters so, the first stage of the study was allocated to conducting a series of laboratory tests such as the unconfined compression test, and cbr an...
seismic retrofit strategies have been developed in the past few decades following the introduction of new seismic provisions and the availability of advanced materials and methods. it can be observed that new approaches to deal with more lateral forces are more innovative and more energy absorbent. in line with this, there is a growing trend toward the use of steel shear walls as a system with ...
objectives: the aim of this study was to assess and compare the water sorption and flexural strength of thermoplastic and conventional acrylic resins. materials and methods: water sorption and flexural strength were compared between a thermoplastic modified polymethyl methacrylate (pmma) denture base resin (group a) and a heat-polymerized pmma acrylic resin (group b) as the control group (n=10)...
BACKGROUND AND AIMS Real-time shear wave elastography (2D-SWE) is a two-dimensional transient elastography and a competitor as a biomarker of liver fibrosis in comparison with the standard reference transient elastography by M probe (TE-M). The aims were to compare several criteria of applicability, and to assess inflammation and steatosis impact on elasticity values, two unmet needs. METHODS...
The aim of this study is to determine the change of some physical properties (oven-dry density, weight loss, swelling and anti-swelling efficiency) and mechanical properties (compression strength parallel to grain, bending strength, modulus of elasticity in bending, janka-hardness (cross-section, radial, tangential), impact bending strength and tension strength perpendicular to grain) of wild c...
Introduction: This work is dedicated to investigating the effect of applying polarized He-Ne laser beam (λ= 632 nm, 10 mW, 1 j/cm2) with polarization direction perpendicular to the stress direction on the tensile strength of biological tissue (elasticity index of the Pleura 10*4*0.1 mm). Method and Material: The optimized characteristics of the laser illumi...
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