نتایج جستجو برای: gel filteration

تعداد نتایج: 105099  

ژورنال: مواد پرانرژی 2021

Gel propellants are the optimal state of liquid propellants. Gel propellants not only have the advantages of liquid and solid propellants, but also don’t have the disadvantages of the mentioned propellants. The rheological properties of these propellants have a great effect on their propulsion systems, especially in the dynamic state. With regard to the fact that missile and rocket propellants ...

A.R. Farajollahi, F. Pak, M. Horsfield, Z. Myabi,

Background: In this study the basic radiation properties of N-isopropylacrylamaide polymer gel dosimeter were determined together with verification of its soft tissue equivalency. Materials and Methods: The NIPAM gel was prepared and irradiated approximately 2 h after manufacturing. The magnetic resonance (MR) images were made 24 h after irradiation. The nuclear magnetic resonance (NMR) respons...

Journal: :journal of nanostructures 2015
a. tadjarodi a. azad m. g. dekamin s. afshar r. hejazi

sulfated titania nanoparticles (so42-/tio2 nps) were synthesized using titanium tetraisopropoxide (ttip) by the sol-gel method. the structure and morphology of the prepared nanocatalyst was characterized using x-ray diffraction (xrd), scanning electron microscopy (sem) and brunauer–emmett–teller (bet) methods as well as fourier transform infrared (ft-ir) and energy dispersive x-ray (edx) spectr...

Journal: :chemistry of solid materials 2013
m. riazian

tio2 nanorods are synthesized by a thermal corrosion. in present work, synthesis of tio2 nanorods in anatase, rutile and ti8o15 phases, by using the sol-gel method and alkaline corrosion are reported. the morphologies and crystal structures of tio2 nanorods are characterized by use of field emission scanning electron microscopy, atomic force microscopy and x-ray diffractometer techniques. the o...

Journal: :journal of dental materials and techniques 0
fatemeh mazhari associate professor of pediatric dentistry, dental materials research center, school of dentistry, mashhad university of medical sciences, mashhad, iranسازمان اصلی تایید شده: دانشگاه علوم پزشکی مشهد (mashhad university of medical sciences) mahboobeh shabzendedar assistant professor of pediatric dentistry, dental research center, school of dentistry, mashhad university of medical sciences, mashhad, iran.سازمان اصلی تایید شده: دانشگاه علوم پزشکی مشهد (mashhad university of medical sciences) nooshin mohtasham professor of oral & maxillofacial pathology, oral & maxillofacial diseases research center, school of dentistry, mashhad university of medical sciences, mashhad, iranسازمان اصلی تایید شده: دانشگاه علوم پزشکی مشهد (mashhad university of medical sciences) elham nik assistant professor of pediatric dentistry, school of dentistry, hormozgan university of medical sciences, bandarabas, iran.سازمان اصلی تایید شده: دانشگاه علوم پزشکی هرمزگان (hormozgan university of medical sciences) homa noorollahian associate professor of pediatric dentistry, oral & maxillofacial diseases research center, school of dentistry, mashhad university of medical sciences, mashhad, iran.سازمان اصلی تایید شده: دانشگاه علوم پزشکی مشهد (mashhad university of medical sciences)

aim: to investigate the effect of emdogain gel (emd) in pulpotomized primary molars and its clinical and radiographic outcomes. methods and materials: in this   study, 18 lower second primary molars of nine children were treated by   pulpotomy. the teeth were randomly assigned to the emd (experimental) and formocresol (control) groups in each patient (split mouth). following removal of the coro...

Journal: :international journal of nano dimension 0
m. k. shobana center for advanced material technology, kookmin university, 861-1 jeongneung-dong, seongbuk-gu, seoul 136-702, republic of korea.

calcium doped nickel ferrite powders have been prepared by sol-gel combustion technique. metal nitrates, such as calcium nitrate, nickel nitrate and ferric nitrate, were used as the source materials and citric acid and polyvinyl alcohol were used as the burning agent and agglomeration reducing agent, respectively. the average crystallite size of the prepared ferrite was in the order of ~70- 92 ...

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