نتایج جستجو برای: micrometric particles
تعداد نتایج: 156828 فیلتر نتایج به سال:
In this study, a flexible composite shield with a combination of polyethylene, tungsten and boron carbide has been designed and constructed for neutron-gamma mixed fields. For this purpose, theoretical studies were conducted using the multi-purpose MCNPX Code. According to the results of simulation studies, a multi-purpose composite was constructed using a combination of a solid phase of boron ...
This study presents the findings of a wind tunnel experiment investigating behaviour micrometric inertial particles with Stokes numbers around unity in turbulent wake stationary porous disk. Various concentrations $\varPhi _{v}\in ([6-19] \times 10^{-6})$ poly-disperse water droplets (average diameter 40–50 $\mathrm {\mu }$ m) are compared sub-inertial tracer particles. Hot-wire anemometry, pha...
An ideal preparation of 45S5 bioactive glass suspensions/slurries for root canal disinfection should combine high pH induction with capacity for continuing release of alkaline species. The hypothesis of this study was that more material per volume of bioactive glass slurry is obtained with a micrometric material (< 5 microm particle size) or a micrometric/ nanometric hybrid, rather than a solel...
Here we demonstrate the all-optical manipulation of polymeric membranes in microfluidic environments. The are decorated with handles for their use holographic optical tweezers setups. Our results show that due to form factor present an 8-fold increase mechanical stability, respect micrometric dielectric particles. This intrinsic superior stability is expected improve profoundly a wide range bio...
سنتز پلیمرهای کوئوردیناسیونی جدید از لیگاندهای 2-آمینو نیکوتینیک اسید، 2-کینولین کربوکسیلیک اسید، 2-پیرازین کربوکسیلیک اسید در ابعاد توده، با روش گرایان دمایی و با استفاده از شاخه ی جانبی انجام شده است، این پلیمرها توسط روش طیف سنجی ir شناسایی و پایداری گرمایی آن ها توسط تجزیه های وزن سنجی حرارتی (tga) و تجزیه ی گرمایی تفاضلی (dta) بررسی شده است. در ادامه، ساختار این ترکیبات توسط بلورنگاری پرتو...
Abstract Allergen-containing subpollen particles (SPPs) are micrometric or sub-micrometric (0.12–5 µm) released from pollen. They able to reach the lower airways, causing allergenic reactions. SPP release occurs through pore of intact grains by rupture whole grain. In this paper results two laboratory experiments investigating dynamics for three alien species Ambrosia genus shown. Rainwater com...
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