نتایج جستجو برای: frequency percentage
تعداد نتایج: 608915 فیلتر نتایج به سال:
The characteristics of embedded pulse plasma using 60 MHz radio frequency as the source power and 2 MHz radio frequency as the bias power were investigated for the etching of SiO2 masked with an amorphous carbon layer (ACL) using an Ar/C4F8/O2 gas mixture. Especially, the effects of the different pulse duty ratio of the embedded dual-frequency pulsing between source power and bias power on the ...
OBJECTIVE To investigate the frequency of pulmonary hypertension (PH) and clinical parameters associated with PH in sarcoidosis patients. METHODS A prospective, observational study was performed on 246 consecutive Japanese sarcoidosis patients followed up at the outpatient sarcoidosis clinic in the Central Clinic of Kyoto. The patients were evaluated for PH by Doppler echocardiography. Among ...
Background and aims: X-band microwave with 8-12.5 frequency range has various applications such as air control traffic, navy communication and etc. Uncontrolled exposure with microwave can lead to adverse effect on workers. Application of the shielding is superior control for prevention of microwave exposure.The aim of this study is production a new electromagnetic shielding for exposure contr...
Background: Stroke is one of the common causes of disability and death in the world. Furthermore, diabetes mellitus is among the main risk factors for cerebrovascular events. However, a high percentage of individuals with diabetes mellitus are unaware of their disease. Objectives: To determine the frequency of Undiagnosed Diabetes mellitus (UD) in patients with stroke. Materials & Methods: I...
Background & Aim : With increase in electrical devices , pregnant women has been exposed to electromagnetic field ( EMF) radiation with low-frequency (50-60 Hz). The aim of this study is the investigating the effect of EMF with low frequency on development of two-cell NMRI mice embryo . Materials & Methods : Ovulation in female mice was induced by intraperitoneal injection of 10 IU PMSG ....
Expanding upon work by Diessel & Tomasello (2005, hereafter D&T) and Gries (to appear), 1 this study explores particle positioning in child language as a gradual cognitive-pragmatic development based on statistical distribution of input. The phenomenon of particle position alternation is peculiar insofar as it defines a category of combinations which show syntactic variation without concomitant...
OLAP cubes are a powerful database technology to join tables and aggregate data to discover interesting trends. However, OLAP cubes exhibit limitations to uncover fractional relationships on a measure aggregated at multiple granularity levels. One prominent example is the percentage, an intuitive probablistic metric, used in practically every analytic application. With such motivation in mind, ...
Background: The aim of this study was to determine the prevalence of affective-emotional disorders in exceptional children in West Azerbaijan province. Method: The population of study was consisted of all children studying at all educational grades of West Azerbaijan province schools in 2011-12. Out of 2854 exceptional children students, stratified randomized method was used to select 481 s...
نمودار تعداد نتایج جستجو در هر سال
با کلیک روی نمودار نتایج را به سال انتشار فیلتر کنید