نتایج جستجو برای: synchronous measurements

تعداد نتایج: 403070  

Journal: :Dalton transactions 2010
Igor O Koshevoy Antti J Karttunen Yi-Chih Lin Chao-Chen Lin Pi-Tai Chou Sergey P Tunik Matti Haukka Tapani A Pakkanen

The novel heterometallic aggregates [Ag(8)Cu(2)(C(2)C(6)H(4)X)(6)(PPh(2)C(6)H(4)PPh(2))(6)][PF(6)](4) (X = H, 1; OMe, 2; NMe(2), 3) were prepared by the self-assembly reactions starting from simple precursors. These compounds consist of the central [Ag(6)Cu(2)(C(2)C(6)H(4)X)(6)](2+) clusters capped by two tripodal fragments [Ag(diphosphine)(3)](+). The solid state structures of complexes 1 and ...

Journal: :Journal of cell science 1976
R S Fraser F Moreno

The rates of polyadenylated messenger RNA and ribosomal RNA synthesis were measured in synchronously dividing cultures of fission yeast (Schizosaccharomyces pombe). Control asynchronous cultures, which had been exposed to the conditions used for preparing synchronous cultures, were investigated to check for effects of the synchronization procedure itself on RNA synthesis. After each period of D...

Journal: :IEEE Transactions on Smart Grid 2021

A new method is proposed to identify the location of transient events, including incipient faults, in power distribution systems, by using synchronized measurements from an emerging class sensors, called waveform measurement units (WMUs). WMUs capture voltage and current waveforms time domain. The consists three steps. first step characterize oscillatory modes components all captured WMUs, cond...

ژورنال: بیماری های پستان 2011
ابراهیمی, ماندانا, الفت بخش, آسیه, حیدری, کاظم, مهرداد, ندا, نجفی, صفا,

  مقدمه: سرطان پستان دو طرفه، پدیده‌ای است که چندان شایع نمی‌باشد و فراوانی، عوامل خطر پیش‌بینی کننده و پیش‌آگهی آن هنوز مورد بحث بوده و به‌خوبی شناخته نشده‌اند. هدف از این مطالعه بررسی موارد سرطان پستان دوطرفه و بقاء این بیماران در مراجعه‌کنندگان به مرکز بیماری‌های پستان جهاد دانشگاهی واحد علوم پزشکی تهران است.   روش بررسی: در یک مطالعه گذشته‌نگر بر اساس اطلاعات ثبت شده بیماران مبتلا به سرطان ...

A. Jabbari, M. Shakeri, S. A. Nabavi Niaki,

In the present work, an integrated method of pole shape design optimization for reduction of torque pulsation components in permanent magnet synchronous motors is developed. A progressive design process is presented to find feasible optimal shapes. This method is applied on the pole shape optimization of two prototype permanent magnet synchronous motors, i.e., 4-poles/6-slots and 4-poles-12slots.

Journal: :IEEE Access 2022

Accurate and fast detection of faults is one the main concerns power systems for their operation productivity. In this paper, a robust dynamic fault filter presented synchronous generator (SG) characterized by highly non-linear model, having uncertainties perturbations both in state measurements. The so designed that residual signal against model uncertainties, process disturbances on hand sens...

2008
K. Salahshoor

A model-based process fault monitoring approach is proposed in this paper which utilizes a multi-sensor data fusion technique. The fusion algorithm is based on a discrete-time extended Kalman filter (EKF). The presented EKF is modified to incorporate the asynchronous sensor measurements. The resulting approach will be evaluated for a variety of conditions including synchronous/asynchronous meas...

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