نتایج جستجو برای: mechanical properties of soil

تعداد نتایج: 21225030  

Journal: :Annals of Warsaw University of Life Sciences - SGGW. Land Reclamation 2013

Journal: :IOP Conference Series: Earth and Environmental Science 2021

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه تبریز 1389

در این پایان نامه که بر اساس مقاله m.a. ruiz, d. stojanoff, some properties of frames of subspaces obtained by operator theory methods, j. math. anal. appl. 343 (2008) 366-378. تنظیم شده است، روابط بین عملگر ها ، پایه های متعامد یکه زیرفضاها و قاب های زیر فضابرای یک فضای هیلبرت جدایی پذیر بررسی می شود. شرایط کافی را روی پایه متعامد زیرفضاهای e = {ei}i?i در فضای هیلبرت h و عملگر پوشای t ? l...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه بیرجند - دانشکده علوم انسانی 1389

abstract amino acids are building blocks of proteins, and play a vital role in living beings existence and their functionality. the interaction of these compounds with metal ions is of great importance to biochemists, and chemists, because their functions can be utilized as a model in understanding enzymes mechanism for transport of metal ions to tissues. among twenty essential amino acids w...

Journal: :journal of solid mechanics 0
m motamedi faculty of engineering, university of shahreza, p. o. box 86149-56841, isfahan, iran m mosavi mashhadi department of mechanical engineering, university of tehran, p.o. box 11365-4563, tehran, , iran

this work is conducted to obtain mechanical properties of microtubule. for this aim, interaction energy in alpha-beta, beta-alpha, alpha-alpha, and beta-beta dimers was calculated using the molecular dynamic simulation. force-distance diagrams for these dimers were obtained using the relation between potential energy and force. afterwards, instead of each tubulin, one sphere with 55 kda weight ...

Journal: :journal of dental school, shahid beheshti university of medical sciences 0
ساینا شمس زاده sayna shamszadeh وقارالدین اخوان زنجانی vaghareddin akhavan zanjani dental school, shahid beheshti university of medical sciences, tehran-iran، دانشکده دندانپزشکی، دانشگاه علوم پزشکی شهید بهشتی. مریم مفیدی maryam mofidi dental school, shahid beheshti university of medical sciences, tehran-iran، دانشکده دندانپزشکی، دانشگاه علوم پزشکی شهید بهشتی. مریم عبده تبریزی maryam abdo tabrizi dental school, shahid beheshti university of medical sciences, tehran-iran، دانشکده دندانپزشکی، دانشگاه علوم پزشکی شهید بهشتی. صنمبر یزدانی sanambar yazdani

objective: despite great advances made in dental composite resins, their use is associated with some concerns regarding their mechanical properties such as their flexural strength. considering the introduction of different composite resins into the market, there is a need to compare their mechanical properties and particularly flexural strength. this study aimed to compare the flexural strength...

Journal: :international journal of bio-inorganic hybrid nanomaterials 0

nanoindentation techniques are widely used for the study of nanomechanical properties of thin nanocomposite coatings. theoretical concepts and practical use of nanoindentation method are summarized with reporting the applications of these tests in characterization of some particular thin nanocomposite hybrid coatings prepared by sol-gel process. the better mechanical properties can be obtained ...

Journal: :international journal of nanoscience and nanotechnology 2010
j. davoodi m. ahmadi

the mechanical properties including elastic stiffness constants as well as bulk modulus of palladium (pd) nanowire were calculated in the constant temperature and pressure (npt), ensemble by molecular dynamics (md) simulation technique. the quantum sutton-chen (q-sc) many-body potential was used to calculate the cohesive energy as well as forces experience by every atoms. the temperature and pr...

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