نتایج جستجو برای: signal

تعداد نتایج: 418371  

Journal: :Proceedings of the National Academy of Sciences 2004

ژورنال: ژئوفیزیک ایران 2018

Surface nuclear magnetic resonance (surface-NMR) method is a well-known tool for determining the water-bearing layers and subsurface resistivity structure. Harmonic interference is an inevitable interference in surface-NMR measurements. Accurate estimation of harmonic interference parameters (i.e., fundamental frequency, phase and amplitude) leads to better retrieval of power-line harmonics and...

Having sufficient and accurate understanding about kinetics of phenomena, could be an important reason for further technological progresses. Finding a white-box mathematical model for weight vs. time curves of Electrophoretic Deposition (EPD) using large and small signal analysis has been studied thoroughly in the present investigation. Weight-Time curves of nano-Mullite suspension have been tr...

Journal: :Perception & Psychophysics 1974

Journal: :journal of medical signals and sensors 0
saeedeh mobasheri hamid behnam parisa rangraz jahan tavakkoli

high‑intensity focused ultrasound (hifu) is a novel treatment modality used by scientists and clinicians in the recent decades. this modality has had a great and significant success as a noninvasive surgery technique applicable in tissue ablation therapy and cancer treatment. in this study, radio frequency (rf) ultrasound signals were acquired and registered in three stages of before, during, a...

Journal: :journal of medical signals and sensors 0

electrocardiogram (ecg) is one of the most common biological signals which plays a significant role in diagnosis of heart diseases. one of the most important parts of ecg signal processing is interpretation of qrs complex and obtaining its characteristics. r wave is one of the most important sections of this complex which has an essential role in diagnosis of heart rhythm irregularities and als...

Journal: :iranian biomedical journal 0
محمود اوراضی زاده mahmoud orazizadeh donald m. salter

signal regulatory proteins (sirp) belong to immunoglobulin super family (igsf) and relate to integrin signaling cascades. it has been shown that sirpa is expressed in a variety of cells including myeloid cells and neurons. in the present study the expression of this igsf member in articular chondrocytes was investigated. methods: using a panel of anti-sirpalpha antibodies, immunohistochemistry,...

Journal: :iranian journal of medical sciences 0
saeid shahrabi department of hematology, faculty of medical sciences, tarbiat modares university, tehran, iran saeid kaviani department of hematology, faculty of medical sciences, tarbiat modares university, tehran, iran; and department of immunology, faculty of medical sciences, tarbiat modares university, tehran, iran masoud soleimani department of hematology, faculty of medical sciences, tarbiat modares university, tehran, iran; and department of immunology, faculty of medical sciences, tarbiat modares university, tehran, iran ali akbar pourfathollah department of immunology, faculty of medical sciences, tarbiat modares university, tehran, iran behnaz bakhshandeh department of biotechnology, college of science, university of tehran, tehran, iran saeideh hajizamani diagnostic laboratory sciences and technology research center, school of paramedical sciences, shiraz university of medical sciences, shiraz, iran

background: human umbilical cord blood (hucb) is an acceptable and readily accessible source of stem cells. there is an ongoing interest in cord blood stem cell therapies; however, little is known about the possible unfavorable effects of laboratory modifications on the isolated hucb cells. the involvement of mirnas in several biological processes has been shown. the aim of this study was to ev...

Journal: :international journal of advanced design and manufacturing technology 0
m. s. safizadeh m. hasanian

oil and gas transmission pipelines are critical items of infrastructure in providing energy sources to regions and countries. steel pipes are commonly used which can be subject to both internal and external corrosion. this paper presents an advanced nondestructive inspection technique for detection of oil-gas pipeline corrosion defect. the pulsed eddy current (pec) method has been successfully ...

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