نتایج جستجو برای: in vitro caries model
تعداد نتایج: 17315480 فیلتر نتایج به سال:
Background Male infertility management has made significant progress during the past three decades, especially after the introduction of intracytoplasmic sperm injection (ICSI) in 1992. However, many boys and men still suffer from primary testicular failure due to acquired or genetic causes. New and novel treatments are needed to address these issues. Spermatogenesis originates from spermatogon...
Although aluminum itself was reported to prevent dental caries, previous in vitro studies reported that the aluminum level in the whole saliva of children was independent of caries prevalence. Purposes of this study were to compare the elution levels of aluminum and calcium from deciduous enamel into acidic artificial saliva, and determine whether the degree of aluminum elution reflects individ...
Insertional inactivation of the Streptococcus mutans spaP gene was used to construct an isogenic mutant (834) of strain NG8 (serotype c) which lacked the major cell surface-associated protein referred to as P1 (15). Results of several studies suggest that P1 is involved in the adherence of S. mutans to saliva-coated apatite surfaces. With an in vitro model system of hydroxyapatite (HA) beads co...
A study was conducted to investigate the effect of follicular size (small,
چکیده این پژوهش به منظور بررسی تغییرات ترکیب شیمیایی و بهبود قابلیت هضم سیلوی علف نی با افزودن اوره و تفاله مرکبات به روش in vitro و in situ انجام شد. جهت بررسی تغییرات ترکیبات شیمیایی، ابتدا 50 کیلوگرم علف نی جمع آوری و به قطعات 2-4 سانتی متری خرد گردید. سپس علوفه نی با سطوح (5/2 و 5 درصد اوره و 5، 10 و 15 درصد تفاله مرکبات) مخلوط و در سطل های پلاستیکی سیلو گردید. ترکیبات شیمیایی اندازه گیری...
The research carried out a comparative assessment of the physical and mechanical properties tooth enamel: healthy; demineralized; demineralized subsequently infiltrated with flowable composite according to standard or modified technique. An original in vitro model artificial caries human enamel was used for study, clinical-topographic, color-textural physical-mechanical which correspond charact...
abstract deviation or in other words committing a crime is literally a social problem. this research that was conducted in 1389 and 1390 has tried to investigate the causes of crimes committed by young male inmates qazvin central prison and effective variables on their tendency to deviation. accordingly after collecting theoretical framework and offering theoretical model including both hirsch...
abstract this study aimed at investigating the effect of bilingual teaching of cognate words (persian-english) on iranian upper intermediate efl learners’ knowledge of lexical development. for this purpose,100 subjects participated in this study out of which 40 learners were selected for this study and they were assigned into two groups, control and experimental. cross-language cognates (wor...
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