نتایج جستجو برای: dimensional stone

تعداد نتایج: 423771  

Installing stone columns in the ground is an effective improvement technique to increase the load bearing capacity and reduce the consolidation settlement of the loose or weak cohesive soils. In addition to the increase in the bearing capacity and reduction in the settlement, stone columns can accelerate the dissipation rate of the excess pore water pressure generated by the surcharge, which ex...

Journal: :avicenna journal of dental research 0
bijan heidari department of prosthodontics, school of dentistry, hamadan university of medical sciences, hamadan, ir iranسازمان اصلی تایید شده: دانشگاه علوم پزشکی همدان (hamadan university of medical sciences) fariborz vafaei department of prosthodontics, school of dentistry, hamadan university of medical sciences, hamadan, ir iranسازمان اصلی تایید شده: دانشگاه علوم پزشکی همدان (hamadan university of medical sciences) alireza izadi department of prosthodontics, school of dentistry, hamadan university of medical sciences, hamadan, ir iranسازمان اصلی تایید شده: دانشگاه علوم پزشکی همدان (hamadan university of medical sciences) amir saleh department of prosthodontics, school of dentistry, hamadan university of medical sciences, hamadan, ir iranسازمان اصلی تایید شده: دانشگاه علوم پزشکی همدان (hamadan university of medical sciences) zahra dehbani private dentistry, hamadan, ir iran sara khazaei department of prosthodontics, school of dentistry, hamadan university of medical sciences, hamadan, ir iran; department of prosthodontics, school of dentistry, hamadan university of medical sciences, hamadan, ir iran. tel: +98-9187048221, fax: + 98-8138354220سازمان اصلی تایید شده: دانشگاه علوم پزشکی همدان (hamadan university of medical sciences)

background numerous factors have an effect on the accuracy of an impression and resultant cast, and these include: impression material, impression technique, tray selection, impression disinfection, storage time of impression before pouring, stone type used for fabrication of cast. up to now, there has been little research conducted on the effect of contact time of a cast with an impression, on...

Journal: :journal of dentistry, tehran university of medical sciences 0
sareh habibzadeh assistant professor, department of prosthodontics, school of dentistry, international campus tehran university of medical sciences, tehran, iran. shima safaeian assistant professor, department of prosthodontics, school of dentistry, international campus tehran university of medical sciences, tehran, iran. marjan behruzibakhsh assistant professor, department of dental material , school of dentistry, tehran university of medical sciences, tehran, iran. parisa kaviyani under graduate student, international campus, school of dentistry, tehran university of medical sciences, tehran, iran. mohamadjavad kharazifard statistical advisor, dental research center, tehran university of medical sciences, tehran, iran.

objectives: this study aimed to assess the effect of storage time and temperature on dimensional stability of impressions made with cavex outline zinc oxide impression paste. materials and methods: a round stainless steel mold with five grooves (three horizontal and two vertical) was used in this in-vitro experimental study. cavex outline impression paste was prepared according to the manufactu...

Journal: :Dental materials journal 2013
Hisako Hiraguchi Masahiro Kaketani Hideharu Hirose Hisaji Kikuchi Takayuki Yoneyama

There is a concern that long-term immersion of impressions in disinfectant solutions may cause changes in the dimensions of the resulting stone casts. This study investigated the dimensional changes in stone casts resulting from immersion of five brands of addition-type silicone rubber impressions in disinfectant solutions for 30 min and 24 h. Impressions of a master cast designed to simulate a...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه فردوسی مشهد - دانشکده ادبیات و علوم انسانی 1393

abstract: the present study is an attempt to find out cultural exophoric references in iranian high-school elt textbooks and touch stone series to compare the frequency of occurrence of such references in these books. the purpose is to find out which of the series of the books under investigation impose a greater referential burden on efl learners as far as their reading comprehension of the ...

Journal: :Dental materials journal 2003
Hisako Hiraguchi Hisami Nakagawa Hirobumi Uchida Naoki Tanabe

This study investigated the effect of rinsing alginate impressions using acidic electrolyzed water on the dimensional change and deformation of stone models. Two brands of alginate impression materials were used. The impressions were rinsed using tap water or acidic electrolyzed water with a pH of 2.3, an oxidation-reduction potential of 1,230 mV, and a residual chlorine concentration of 45.0 p...

Journal: :Journal of dental research 1950
W T SWEENEY D F TAYLOR

THIS report presents a method of determining the dimensional changes in gypsum dental products, which avoids the disadvantages of previous methods and which provides extreme sensitivity. As part of the program of research on the gypsum products used in dentistry, a preliminary study was made of various physical properties. This study, which included strength, thermal expansion, setting expansio...

2005
Andreas Döring

form the base of a topology on the Stone spectrum Q(R) such that Q(R) becomes a zero-dimensional, completely regular Hausdorff space. The sets QP (R) are closed-open. If the von Neumann algebra R is abelian, then the Stone spectrum Q(R) is homeomorphic to the Gelfand spectrum Ω(R) of R. For an arbitrary non-abelian unital von Neumann algebra R, the Stone spectrum can hence be regarded as a non-...

2009
Elnaz Afshari Siamak Najarian

Having considered tactile sensing and palpation of a surgeon in order to detect kidney stone during open surgery; we present the 2D model of nephrolithiasis (two dimensional model of kidney containing a simulated stone). The effects of stone existence that appear on the surface of kidney (because of exerting mechanical load) are determined. Using Finite element method, it is illustrated that th...

Journal: :Journal of Dental Research 1950

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