نتایج جستجو برای: dif sources

تعداد نتایج: 292123  

ژورنال: :پوست و زیبایی 0
نفیسه اسماعیلی nafiseh esmaeili autoimmune bullous diseases research center, tehran university of medical sciences, tehran, iran.گروه پوست، داﻧـﺸﮕﺎه ﻋﻠـﻮم ﭘﺰﺷﻜﻲ تهران صدیقه طالبی sedigheh talebi dermatology department, razi hospital, tehran university of medical sciences, tehran, iran.گروه پوست، داﻧـﺸﮕﺎه ﻋﻠـﻮم ﭘﺰﺷﻜﻲ تهران، تهران، اﻳﺮان. کامبیز کامیاب kambiz kamyab pathology department, school of medicine, tehran university of medical sciences, tehran, iran.گروه آسیب شناسی، دانشگاه علوم پزشکی تهران، تهران، ایران. عباس کریمی abbas karimi autoimmune bullous diseases research center, tehran university of medical sciences, tehran, iran.مرکز تحقیقات بیماری های خودایمنی تاولی، بیمارستان رازی، دانشگاه علوم پزشکی تهران، ایران.

زمینه و هدف: بولوس پمفیگوئید (bullous pemphigoid) بیماری اکتسابی اتوایمون با تاول های ساب اپی درمال پوستی می باشد که معمولاً در افراد مسن و بالای 60 سال دیده می شود. اگرچه معمولاً این بیماری با بروز تاول های سفت و محکم (tense) شناخته می شود ولی ضایعات خارشی یا خارش ژنرالیزه نیز به عنوان تنها علائم بیماری گزارش شده است که کمتر مورد بررسی قرار گرفته است.   روش اجرا: در یک مطالعه ی مقطعی، پرونده های...

Journal: :JACC. Heart failure 2016
Paul J Hauptman Steven W Blume Eldrin F Lewis Suzanne Ward

OBJECTIVES This study was developed to determine contemporary management of digoxin toxicity and clinical outcomes. BACKGROUND Although the use of digoxin in heart failure management has declined, toxicity remains a prevalent complication. METHODS The Premier Perspective Comparative Hospital Database (Premier Inc., Charlotte, North Carolina) was used to retrospectively identify patients dia...

2017
Reena Rai Manu V. Harikumar

BACKGROUND Pemphigus is a chronic autoimmune bullous disorder characterized by autoantibodies directed against desmoglein 3 and/or 1. Demonstration of intercellular deposition of IgG on the cell surface of keratinocytes by direct immunofluorescence (DIF) of the skin is the gold standard in the diagnosis of pemphigus. Recently, DIF of plucked hair demonstrating intercellular deposition of IgG in...

Ali Reza Ahmadi Hossein Barati,

This study aimed at investigating differential item functioning (DIF) on the Special English Test of the Iranian National University Entrance Exam (INUEE). The effect of gender and subject area was taken into account. The study utilized one-parameter IRT model with a sample of 36000 students who sat for the INUEE Special English Test in 2004 and/or 2005. The findings confirmed the presence of D...

2010
Sophie Nolivos Carine Pages Philippe Rousseau Pascal Le Bourgeois François Cornet

Bacteria harbouring circular chromosomes have a Xer site-specific recombination system that resolves chromosome dimers at division. In Escherichia coli, the activity of the XerCD/dif system is controlled and coupled with cell division by the FtsK DNA translocase. Most Xer systems, as XerCD/dif, include two different recombinases. However, some, as the Lactococcus lactis XerS/dif(SL) system, inc...

2008
Tamao Saito Atsushi Kato Robert R. Kay

The polyketide DIF-1 induces Dictyostelium amoebae to form stalk cells in culture. To better define its role in normal development, we examined the phenotype of a mutant blocking the first step of DIF-1 synthesis, which lacks both DIF-1 and its biosynthetic intermediate, dM-DIF-1 (des-methyl-DIF-1). Slugs of this polyketide synthase mutant (stlB(-)) are long and thin and rapidly break up, leavi...

Journal: :Psych 2023

Differential item functioning (DIF) is a critical step in providing evidence to support scoring inference building validity argument for psychological or educational assessment. Effect sizes can assist understanding the accumulation of DIF at test score level. The current simulation study investigated performance several proposed effect size measures under variety conditions. Conditions include...

Journal: :Cancer research 2004
Kasumi Shimizu Taku Murata Toshiro Tagawa Katsunori Takahashi Ryoki Ishikawa Yumiko Abe Kohei Hosaka Yuzuru Kubohara

The differentiation-inducing factor-1 (DIF-1) isolated from Dictyostelium discoideum is a potent antiproliferative agent that induces growth arrest and differentiation in mammalian cells in vitro. However, the specific target molecule(s) of DIF-1 has not been identified. In this study, we have tried to identify the target molecule(s) of DIF-1 in mammalian cells, examining the effects of DIF-1 a...

Journal: :Statistics in medicine 2004
Paul K Crane Gerald van Belle Eric B Larson

Assessment of test bias is important to establish the construct validity of tests. Assessment of differential item functioning (DIF) is an important first step in this process. DIF is present when examinees from different groups have differing probabilities of success on an item, after controlling for overall ability level. Here, we present analysis of DIF in the Cognitive Assessment Screening ...

2007
Yinggan Zheng Mark J. Gierl Ying Cui

To date, many studies have been conducted to compare the performance of different DIF procedures using simulated data sets. However, some results from these simulation studies are inconsistent with one other (e.g., Hidalgo & López-Pina, 2004; Jodoin & Gierl, 2001). This study used real data to systematically investigate the consistencies of DIF detection and effect size among three widely-used ...

نمودار تعداد نتایج جستجو در هر سال

با کلیک روی نمودار نتایج را به سال انتشار فیلتر کنید