نتایج جستجو برای: cross over effect
تعداد نتایج: 3034382 فیلتر نتایج به سال:
Background: Considering the susceptibility of preterm infants to disturbances of vital signs, this study was conducted to investigate the effects of using plastic covers on regulation of vital signs in preterm neonates.Methods: This randomized, cross-over, clinical trial was carried out on 80 preterm infants admitted to neonatal intensive care unit (NICU) of Taleghani Hospital, Tabriz, Iran. Th...
مقدمه زمینه و هدف : خارش اورمیک یکی از مشکلات شایع بیماران مبتلا به نارسایی پیشرفته کلیه می باشد طوریکه کیفیت زندگی بیماران را تحت تأثیر قرار می دهد. فلووکسامین از دسته داروهای ضد افسردگی می باشد. و در مطالعات اخیر دیده شده که داروهای مهار کننده باز جذب سروتونین بر روی انواع خارش های مزمن تأثیر دارند. اما کاز آزمایی بالینی دارو نما کنترل جهت تأثیر این داروها انجام نشده است. هدف از مطالعه حاضر...
در این پایان نامه با بکاربردن یک لیزر نیم رسانای کوک پذیر در طول موج nm 780مطالعات طیف سنجی گذار d2 اتم روبیدیوم انجام گرفت. در این آزمایش لیزر دارای پیکربندی littrow و دیود نوع ta-785-500 mw استفاده شد که پهنای طیفی نور خروجی آن در شرایط مختلف محیطی بین mhz2 تا mhz5 متغیر است. بعد از برهمکنش با پرتو لیزر، طیف جذبی و اشباعی فاز بخار روبیدیوم از سلول روبیدیوم در دمای اتاق دیده می شود. از تکنیک ط...
BACKGROUND Meta-analysis of randomized controlled trials (RCTs) is usually based on trials where patients are randomized individually into two different, parallel, treatment groups. This paper concentrates on RCTs of a different design-two-period, two-treatment cross-over trials. METHODS The characteristics of these trials are outlined, with detailed examples of methods for analysis for both ...
this study was an attempt to investigate the effect of using c-test passages on the reading comprehension and incidental vocabulary learning of iranian intermediate efl learners. the participants were 60 male efl learners at kish mehr institute in garmsar. in fact, there were two groups, an experimental group and a comparison group with 30 students in each. the participants were pretested throu...
rested on sociocultural theory (sct), this study attempted to examine the effect of written corrective feedback (wcf) followed by producing written languaging on developing writing accuracy over new tasks. to this aim, two intact iranian efl classes at the low-intermediate level were randomly assigned to two experimental groups: direct (n = 25) and indirect (n = 25). both groups wrote on a numb...
This study investigated the differential predictive validity of the Developing Cognitive Abilities Test (DCAT) in a heterogeneous sample of 863 sixth-grade students. Bias was assessed across gender, race/ethnicity, and socioeconomic dimensions. Level H of the DCAT was administered during the students’ sixth-grade year, and selected subtests from the Iowa Tests of Basic Skills (ITBS) were admini...
This paper develops a two-sector, general equilibrium, overlapping generations model to derive necessary and su cient conditions for the existence of private tutoring in the presence of publicly-provided education. Young agents have heterogeneous endowments of human capital, which can be augmented by mandatory public education and elective private tutoring. Old agents work in the production sec...
Own-race effect is the phenomenon that individuals are better able to recognize the faces of people from their own race than the faces of people from other races. Sporer (2001) suggests that other-race faces may activate a categorization response, which may divert one’s attention away and in turn hurt the recognition of these faces (ingroup/out-group model). In the current study, we manipulated...
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