نتایج جستجو برای: d and e
تعداد نتایج: 17404404 فیلتر نتایج به سال:
BACKGROUND: The purpose of this study was to evaluate the sensitometric characteristics of Ultraspeed, Ektaspeed Plus and Insight dental radiographic films using manual and automatic processing systems. METHODS: In this experimental invitro study, an aluminum step-wedge was used to construct characteristic curves for D-, E- and F-speed radiographic films (Kodak Eastman, Rochester, USA). All fil...
abstract the variables affecting the nature of reading comprehension can be classified into two general categories: reader’s variables, and text variables (alderson, 2000). despite the wave of research on vocabulary knowledge as reader’s variable, the role of this knowledge in c-test as a text-dependent test and its interaction with lexical cohesion of the test as a text feature has remained a...
در طرح آزمایش ها تعیین طرحهای بهینه به عنوان یک موضوع مهم مطرح است. هدف اصلی در استفاده از این طرحها افزایش کارایی از طریق کاهش واریانس حاصل از بلوک بندی می باشد. مسئله ی اساسی که بایستی در استفاده از طرحهای بهینه مورد توجه قرار گیرد این است که دسترسی به این طرح ها به ازای هر تعداد از تیمارها (?)، تعداد بلوکها (b) و اندازه ی بلوک (k) امکان پذیر نمی باشد. از آنجا که استفاده از روشی مناسب برای کا...
Objectives: The present study evaluated the effect of bar and ball attachment designs on retention and stability of a mandibular overdenture supported by four implants. Methods: An edentulous mandibular acrylic resin model with four implants in the anterior part of the ridge (A, B, D and E) was fabricated. A metal framework simulating the overdenture was also fabricated. Totally, 30...
Total number of abortions: 30,699. 60% of abortions were criminal and the re- mainder were due to: (a)Cervical incompetence (b) hypothyr oidism (c) Listeriosis (d) Toxoplasmosis (e) Luteal phase deficiency (f) Placental deficiency Mg) Rh and ABO incompatibility and unknown etiology. Therapeutic abortions were also performed in several cases due to: (a) Miliary tube...
Background: We aimed to evaluate effect of Euphorbia royleana exposure on histocytology of corpuscles of Stannius in fish, Heteropneustes fossilis. Methods: Fish were subjected to 2.47 mg/L and 0.618 mg/L of E. royleana for short-term and long-term exposure, respectively. Blood samples were collected on 24, 48, 72 and 96 h in short-term and after 7, 14, 21, and 28 d in long-term experiment a...
همچنین :grade(i;r) = c و r از حلقه ?? ایده آل i ،?? حلقه موضع ?? نمایش ی (r;m) فرض کنید نمایش فانکتور دوگان ماتلیس باشد. در جدیدترین تحقیقات به عمل آمده توجه ویژه ای به d( ?) فرضکنید ساختار ?? از آنها بررس ???? شده است که ی hc i := hc i (r) ?? های مدول کوهمولوژی موضع ?? ساختار و ویژگ است. hc i (r) های مدول ?? حلقه درونریخت ?? طبیع ?? باشد. با توجه به همریخت r m ?? نمایش پوشش انژکتیو مید...
Introduction: According to appropriate characteristics of glass ionomer cementum and constant increase of its usage in restorative field, so comparison of conventional and resin- modified glass ionomers seems to be useful. This study was designed to determine the shear bond strength of conventional and resin- modified glass Ionomers on enamel, dentin and cementum. Methods: This was an experime...
Objective(s) Several studies have reported improved response of exercised hearts to myocardial infarction (MI). This study was aimed to evaluate the preventive role of treadmill exercise and diosgenin on cardiac marker enzymes, thiobarbituric acid reactive substances (TBARS), total antioxidant status (TAS), lipids, and electrocardiographic (ECG) patterns in isoproterenol (ISO)-induced myocardi...
background: atopic dermatitis is a public health problem worldwide. increment of reactive oxygen species (ros) production may be one of the contributing factors of tissue damage in atopic dermatitis. the present study was designed to determine the effect of vitamins e and/or d on erythrocyte superoxide dismutase and catalase activities in patients with atopic dermatitis. methods: in a random...
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