نتایج جستجو برای: سوزن emg

تعداد نتایج: 10684  

Journal: :international clinical neurosciences journal 0
mozaffar hosseininezhad department of neurology, poursina hospital, guilan university of medical sciences, rasht, iran hamidreza hatamian department of neurology, poursina hospital, guilan university of medical sciences, rasht, iran ahmad alizadeh department of radiology , poursina hospital, guilan university of medical sciences, rasht, iran bahman firozkohi department of radiology , poursina hospital, guilan university of medical sciences, rasht, iran shahrokh yousefzadeh department of neurosurgery, poursina hospital, guilan university of medical sciences, rasht, iran babak bakhshayesh department of neurology, poursina hospital, guilan university of medical sciences, rasht, iran

background and purpose: disc herniation leading to radiculopathy is one of the important differential diagnosis of low back pain which needs specific medical care. radiculopathies can be initially diagnosed by history taking and physical examination. however role of other diagnostic methods like magnetic resonance imaging (mri) and electromyography (emg) in narrowing differential diagnosis is w...

ژورنال: :علوم و فناوری نساجی 2014
ایمان حاجی زاده سعید ابراهیمی پدرام پیوندی

کیفیت دوخت در ماشین های دوزندگی تا حد زیادی متأثر از پارامترهای سازوکار محرک سوزن است. با توجه به اثر سرعت سوزن در محدوده نفوذ پارچه بر نیروی تماس، گرمای ایجاد شده در سوزن و نیز صدمه های فیزیکی به پارچه، استفاده از سازوکار محرک بهینه اهمیت ویژه ای دارد. بنابراین در مقاله حاضر، ابتدا سازوکار لنگ و لغزنده معرفی شده است که سازوکار معمول حرکت سوزن در ماشین های دوزندگی راسته دوز است. سپس، مراحل بهین...

2015
Feng Qiu Tingting Li Zhi Rong Qian Wenyu Song Jianguo Liu Jun Wan Xiaokun Qi

Objectives: to evaluate the diagnostic value of external anal sphincter electromyography (EAS-EMG) and urethral sphincter electromyography (US-EMG) in patients with multiple system atrophy (MSA). Methods: 35 patients who were diagnosed as MSA were examined as treatment group, while 53 non-MSA patients were examined as control group, using EAS and US-EMG. Data was recorded and analyzed, includin...

Alireza Motealleh, Javad Sarrafzadeh, Mohammad-Ali Sanjari, Nader Maroufi,

AbstractBackgroundentity. It is hypothesized to result from abnormal patellar tracking caused by altered motorcontrol. Deficit in neuromotor control of the core may be a remote contributing factor to thedevelopment of PFP. Application of reliable EMG measures would be helpful to handle thistheory. Therefore, the purpose of this study was to determine the test-retest reliability of thecore and v...

2005
Geert Bekaert Robert J. Hodrick Xiaoyan Zhang

We examine international stock return comovements using country-industry and country-style portfolios. We first establish that parsimonious risk-based factor models capture the covariance structure of the data better than the popular Heston-Rouwenhorst (1994) model. We then establish the following stylized facts regarding stock return comovements. First, we do not find evidence for an upward tr...

Background: Deep learning has revolutionized artificial intelligence and has transformed many fields. It allows processing high-dimensional data (such as signals or images) without the need for feature engineering. The aim of this research is to develop a deep learning-based system to decode motor intent from electromyogram (EMG) signals. Methods: A myoelectric system based on convolutional ne...

در این مقاله شبیه‌سازی تاثیر شکل هندسه نازل و ارتفاع سوزن بر روی افشانه سوخت دیزل با استفاده از نرم‌افزار فلوئنت بررسی شده است. با تغییر شکل نشیمنگاه و فاصله سوزن تا نشیمنگاه در شرایط ثابت، اندازه و محل شکل‌گیری کاویتاسیون درون نازل تغییر خواهد کرد. به همین دلیل ابتدا به صورت گذرا و با شبکه‌بندی متحرک و همچنین روش اسکنر – سائور، تاثیر هندسه نازل و فاصله سوزن تا نشیمنگاه بر شکل‌گیری کاویتاسیون د...

2012
Aarti Malik

Electromyography (EMG) is the analytical study of electrical activity produced by skeletal muscles. EMG is an example of modern human computer interaction which can be used in the field of medicines and engineering. Through this paper we are going to discuss about different types of EMG-Surface EMG(SEMG)/surface scanning EMG and intramuscular/ indwelling (needle and fine-wire) EMG, the electric...

A Zamani, H Parsaei, M Dehbozorgi M Ghofrani Jahromi

Background: Electromyographic (EMG) signal decomposition is the process by which an EMG signal is decomposed into its constituent motor unit potential trains (MUPTs). A major step in EMG decomposition is feature extraction in which each detected motor unit potential (MUP) is represented by a feature vector. As with any other pattern recognition system, feature extraction has a significant impac...

افزایش قابلیت اطمینان و ایمنی شبکه راه‏آهن از جمله اهداف مدیران صنعت ریلی است که نیازمند بکارگیری روش­هایی برای تشخیص و شناسایی خرابی می­باشد. در راه­آهن ایران طبق آمار ارایه شده توسط راه­آهن جمهوری اسلامی ایران، 90 درصد سوانح در ایستگاه تهران بر روی سوزن رخ می دهد که 40 درصد آن به دلیل عدم دقت در مانور، 25 درصد مسیر اشتباهی، 25 درصد خرابی سوزن و 1...

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