نتایج جستجو برای: pulse on time

تعداد نتایج: 9162616  

Journal: :مجله دانشگاه علوم پزشکی قم 0
محمدرضا یگانه خواه mohammad reza yeganehkhah qom university of medical sciencesدانشگاه علوم پزشکی قم سیدحسن عادلی seyed hassan adeli qom university of medical sciencesدانشگاه علوم پزشکی قم مصطفی واحدیان mostafa vahedian qom university of medical sciencesدانشگاه علوم پزشکی قم تهمینه دادخواه تهرانی tahmineh dadkhah tehrani qom university of medical sciencesدانشگاه علوم پزشکی قم حسین اکبری hossein akbari qom university of medical sciencesدانشگاه علوم پزشکی قم سکینه روشنی مبارکی sakineh roshani mobaraki qom university of medical sciencesدانشگاه علوم پزشکی قم زهرا نراقی پورآرانی

background and objectives: pulse oximetry is the most common technique for monitoring hemoglobin oxygen saturation (spo2). different colors and brands of nail polish may cause disturbance in the reading and interpretation of oxygen saturation. the aim of this study was to determine the effect of different colors of nail polish on oxygen saturation measured by pulse oximeter. methods: thirty hea...

Roohnia, M., Sabet, H., Parvaresh, A.,

In this research, the effect of different welding parameters on residual stress and microstructure of the weld region, as well as the comparison of two methods of measuring residual stress using critical fracture longitudinal wave method and preformation method have been investigated. For this purpose, the taguchi DOE methodology is used as a statistical method to optimize four parameters of pu...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه مازندران - پژوهشکده علوم انسانی و اجتماعی 1391

the central purpose of this study was to conduct a case study about the role of self monitoring in teacher’s use of motivational strategies. furthermore it focused on how these strategies affected students’ motivational behavior. although many studies have been done to investigate teachers’ motivational strategies use (cheng & d?rnyei, 2007; d?rnyei & csizer, 1998; green, 2001, guilloteaux & d?...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه رازی - دانشکده علوم 1391

we have two part in this thesis, at first: the interaction of native calf thymus dna (ct-dna) with two anthraquinones including quinizarin (1,4- dihydroxy anthraquinone) and danthron (1,8- dihydroxy anthraquinone) in a mixture of 0.04 m brittone-robinson buffer and 50% of ethanol were studied at physiological ph by uv-vis absorption, florescence, circular dichroism spectroscopic methods, viscos...

A. Ramazani, M. Almasi kashi Z. Haji jamali,

NiCu alloy nanowires arrays were embedded into the anodic aluminum oxide (AAO) template by ac-pulse electrodeposition. Different off-time were used in electrolyte with constant concentration of Ni and Cu and acidity of 3. The effect of deposition parameters on alloy contents was investigated by studying the microstructure and magnetic properties of as-deposited NiCu alloy nanowires. Atomic forc...

With a focus on investigations in the area of overactuated spacecraft, a new high-performance robust three-axis finite-time attitude control approach, which is organized in connection with the quaternion based estimation scheme is proposed in the present research with respect to state-of-the-art. The approach proposed here is realized based upon double closed loops to deal with the angular rate...

Journal: :رادار 0
اباذر خرمی احمد عفیفی پرویز امیری طاهر آقازاده

in this paper, the results of design and implementation of the subsystems for generating loran pulse are proposed based on method of carrier’s pulse width change. in order to generate the desired pulse, firstly a pwm signal generated and then it is applied to a class-d switching amplifier. the results show that by generating appropriate pulses in digital fpga subsystem for application in switch...

Journal: :Hypertension 2008
Ahmed Qasem Alberto Avolio

Aortic pulse wave velocity (PWV), calculated from pulse transit time (PTT) using 2 separate pulse recordings over a known distance, is a significant biomarker of cardiovascular risk. This study evaluates a novel method of determining PTT from waveform decomposition of central aortic pressure using a single pulse measurement. Aortic pressure was estimated from a transformed radial pulse and deco...

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