نتایج جستجو برای: size structure

تعداد نتایج: 2026477  

Due to its biocompatibility, bioactivity and high durability properties, hydroxyapatite (HA) has a wide range of applications in medical cases such as bone defect treatment and bone tissue regeneration. Biological apatite as the most important integrity of the mineral part of hard tissues consists of tiny hydroxyapatite crystals in nanoregime. It seems that using the artificial hydroxyapatite...

Journal: :Journal of Economic Theory 2007

Journal: :Nonlinear Processes in Geophysics 2011

Journal: :Proceedings of the Royal Society B: Biological Sciences 2012

ژورنال: علوم آب و خاک 2017

Spur dikes are the most common hydraulic structures for river bank protection. Since the construction of this structure causes higher velocities around it, this structure is exposed to erosion. Riprap around the structure nose is one of the most common and economic way to protect spur dike. The main aim of this study is to investigate the riprap stability in a mild 90 degrees bend. Experiments ...

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