نتایج جستجو برای: c light

تعداد نتایج: 1415809  

Journal: :journal of dental materials and techniques 0
saied mostafa moazzami department of operative and esthetic dentistry, dental research center, faculty of dentistry, mashhad university of medical sciences, mashhad, iran reza kazemi department of reconstructive sciences, university of connecticut health center, school of dental medicine, farmington, usa maliheh alami department of operative and esthetic dentistry, dental research center, faculty of dentistry, mashhad university of medical sciences, mashhad, iran ebrahim attaran department of physics, ferdowsi university of mashhad, mashhad, iran michael mehhary center for dental research, loma linda university school of dentistry, loma linda majid sarmad department of statistics, faculty of mathematical sciences, ferdowsi university of mashhad, mashhad, iran

introduction: application of light transmitting posts to restore greatly damaged endodontically treated teeth has been increased. it is suspected that light intensity decreases as it passes throughout different materials. this can reduce the degree of conversion required for adequate bond strength throughout the length of these posts. the objective of this study was to evaluate the amount of li...

Journal: :Plant physiology 1982
E Weis

The most heat-sensitive functions of chloroplasts in Spinacia oleracea L. including the stromal carboxylation reaction, the light-induced electrical field gradient across the thylakoid membrane, as well as the overall photosynthetic CO(2) fixation were less affected by heat if chloroplasts were heated in the light: 50% inactivation occurred around 35 degrees C in the dark and around 40 degrees ...

Journal: :journal of rangeland science 2015
marzieh asgari mohsen nasiri ali ashrafe jafari leila flah hoseini

to study the effects of chilling on dormancy breaking and the increased germination characteristics of nepeta (germination percent and speed, seedling length, vigor index, wet and dry weight), a factorial experiment in a completely randomized design with 4 replications was implemented in a laboratory in 2014. factor a was the chilling treatment in three levels (control, one-month and two-month ...

Journal: :The journal of contemporary dental practice 2006
Ahmed A Elhejazi

UNLABELLED The aim of this study was to investigate the effect of light intensity on polymerization shrinkage of resin composites. The five materials tested were Lite-Fil (A) (LFA), Lite-Fil (P) (LFP), Z100, Palfique, (PAL) and Tetric (TRC). Two types of measurements were made to determine the effects of environmental temperature and light intensity. Results were analyzed by two-way analysis of...

Journal: :The Journal of clinical investigation 1984
H H Salem N L Esmon C T Esmon P W Majerus

Protein C activation by thrombin is significantly accelerated by the endothelial cell surface protein thrombomodulin, Factor Va, or its light chain. In this study we have compared the activation of protein C in the presence of either cofactor and examined the possibility that thrombomodulin and Factor Va-light chain act together to regulate protein C activation by thrombin. At all concentration...

Journal: :journal of nanostructures 2014
j. o. ozuomba a. j. ekpunobi

nanocrystalline titanium (iv) oxide paste has been deposited on fluorine doped tin oxide glass substrate by the blade method. the deposited film was subjected to thermal treatment to obtain an electrode foe a photo-electrochemical cell. the electrode was sensitized with prophyrin dye which was a local dye extracted from carica papaya leaves. avaspec 2.1 spectrophotometer was used to obtain the ...

Journal: :journal of dental materials and techniques 0
saied mostafa moazzami department of operative and esthetic dentistry, dental research center, faculty of dentistry, mashhad university of medical sciences, mashhad, iranسازمان اصلی تایید شده: دانشگاه علوم پزشکی مشهد (mashhad university of medical sciences) reza kazemi department of reconstructive sciences, university of connecticut health center, school of dental medicine, farmington, usa maliheh alami department of operative and esthetic dentistry, dental research center, faculty of dentistry, mashhad university of medical sciences, mashhad, iranسازمان اصلی تایید شده: دانشگاه علوم پزشکی مشهد (mashhad university of medical sciences) ebrahim attaran department of physics, ferdowsi university of mashhad, mashhad, iranسازمان اصلی تایید شده: دانشگاه فردوسی (ferdowsi university) michael mehhary center for dental research, loma linda university school of dentistry, loma linda majid sarmad department of statistics, faculty of mathematical sciences, ferdowsi university of mashhad, mashhad, iranسازمان اصلی تایید شده: دانشگاه فردوسی (ferdowsi university)

introduction: application of light transmitting posts to restore greatly damaged endodontically treated teeth has been increased. it is suspected that light intensity decreases as it passes throughout different materials. this can reduce the degree of conversion required for adequate bond strength throughout the length of these posts. the objective of this study was to evaluate the amount of li...

Avat (Arman) Taherpour Elahe Rajaeian

The insertion of an olefinic C=C bond into a metal-carbon bond is of potential interest as a preparativeroute to new products and as results of C-C coupling reactions to organic compounds. The allyl compoundsof Mg, react with an olefin by inversion of the allyl group via a six center transition state. These precyclicreactions may be one of the most important classes of organic reactions. The re...

Journal: Polyolefins Journal 2018

Novel cyclic olefin polymers (COPs) derived from bulky cyclic olefins, tricyclodipentadiene (TCPD) and tricyclo[6.4.0.19,12]-tridec-10-ene (TTE), with high glass transition temperature (Tg), excellent thermal stability, and high transparency, have been synthesized by ring-opening metathesis polymerization (ROMP) and subsequent hydrogenation. ROMP of TCPD and TTE was carried out successfully wit...

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