نتایج جستجو برای: formation evaluation
تعداد نتایج: 1338380 فیلتر نتایج به سال:
چکیده ندارد.
in this thesis, barium ferrite nano particles were prepared by sol-gel method. their structural and magnetic properties of samples have been investigated using thermo gravimetric analysis (tg-dta), x-ray powder diffractometer (xrd), fourier transform infrared (ftir), scanning electron microscopy (sem), field emission scanning electron microscopy (fesem), ac susceptometer, vibrating sample magne...
electromagnetic methods are widely used for the study of subsurface resistivity structures. these methods are based on the response of the subsurface structures to electromagnetic fields. the magnetotelluric (mt) method is an electromagnetic technique that uses the natural, time varying electric and magnetic field components measured at right angles to the surface of the earth, to make inferenc...
the present study is paid to the evaluation of the welfare program of the unemployment insurance in iran. the main purpose which was the main reason for performing this thesis, was the unemployment insurance plan’s challenges in iran such as financial problems of this plan, prolongation of the credit receipt for some insured people, unemployment slow exiting from the unemployment insurance fund...
Ego identity defined as a fundamental element of a person and as self-continuum, mental andinward image that an individual has about him or herself. This subject investigated in contemporary world, amply.For actualizing and testing this concept, four bases including achievement, moratorium, foreclosure and diffusionintroduced and based on this framework, and the effect of different factors on e...
background: to evaluate and compare the efficacy of mineral trioxide aggregate (mta) and traditionally used calcium hydroxide (ca(oh)2) in inducing root end formation of immature roots of traumatized young permanent anterior teeth. materials and methods: the study was carried out on 22 nonvital, immature permanent maxillary incisors. samples were allotted into two groups – group i mta and group...
introduction: the aim of the present investigation was to compare the efficacy of mineral trioxide aggregate (mta) and 0.2% chlorhexidine (chx) mixture to pure mta, as a pulp capping material. methods and materials: the pulp of 24 lateral incisors and canines from four dogs were exposed and capped either with mta or mta+0.2% chx. after 2 months the animals were sacrificed and the teeth were pre...
background: urinary tract infection in children may cause renal scar formation, which can be prevented by early and appropriate treatment. recent studies showed that single daily injection of gentamycin can produce best effect without increasing the side effects. the aim of this study was to evaluate the rate of renal scar formation when new regime (every other day gentamicin injection) used fo...
abstract this study evaluated and compared medical terminology and english for the students of medicine (ii) as two representatives of the textbooks available on the iranian market for teaching english to the students of medicine. this research was performed on the basis of a teacher’s and a number of students’ attitudes and the students’ needs analysis for two reasons: first, to investigate...
background: there is a controversy about exact time of bone healing. the aim of this study was evaluation of bone formation and change of density after mandibular third molar extraction. methods: radiographs were taken from 16 empty tooth sockets immediately after extraction of mandibular third molars and 2, 4 and 6 months later under similar condition. the radiographs were digitized and th...
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