Results 21 to 30 of about 40,020 (266)

Daily runoff simulation using Eight Day Period of MODIS satellite images and SRM hydrological model (case study: Ravansar Sanjabi basin in kermanshah Province) [PDF]

مهندسی منابع آب, 2019
In this paper the daily runoff of Ravansar Sanjabi basin (1260 Km^2), in Kermanshah Province of Iran is simulated through SRM hydrological model. The Snow Cover Area variable which a main and necessary variable in SRM model is calculated from MOD10A2 ...
Seyyed Vahid Shahoei, Jahangir Porhemmat, Hossein Sedghi, Majid Hosseini, Ali Saremi   +4 more
doaj  

Peningkatan Efisiensi Kinerja Switched Reluctance Motor dengan Metode Pergeseran Sudut Fasa

Teknik, 2021
Penggerak listrik banyak digunakan pada kendaraan listrik, sebagai contoh adalah switched reluctance motor (SRM). SRM memiliki keunggulan seperti: kontruksi sederhana, perawatan mudah, performa tinggi, dan ramah lingkungan.
Agata Dita Wardani, Slamet Riyadi, Leonardus Heru Pratomo, Florentinus Budi Setiawan   +3 more
doaj   +1 more source

Tổng quan về động cơ từ trở chuyển mạch: Cơ hội, thách thức và xu hướng điều khiển trong tương lai

Tạp chí Khoa học và Công nghệ, 2023
Động cơ từ trở chuyển mạch là động cơ điện mới được ứng dụng rộng rãi trong những năm gần đây. Với nhiều ưu điểm như mô men khởi động lớn, cấu tạo đơn giản, giá thành sản xuất rẻ, tổn hao nhiệt thấp, ..., động cơ từ trở chuyển mạch trở thành đối tượng ...
Phí Hoàng Nhã, Võ Thị Cẩm Thùy
doaj  

Complementing CO₂ emission reduction by solar radiation management might strongly enhance future welfare [PDF]

Earth System Dynamics, 2019
Solar radiation management (SRM) has been proposed as a means to reduce global warming in spite of high greenhouse-gas concentrations and to lower the chance of warming-induced tipping points.
K. G. Helwegen, C. E. Wieners, C. E. Wieners, C. E. Wieners, J. E. Frank, H. A. Dijkstra, H. A. Dijkstra   +6 more
doaj   +1 more source

A Torque Sharing Optimization Control Strategy for Switched Reluctance Motors [PDF]

Zhengzhou Daxue xuebao. Gongxue ban
Aiming at the problem of larger torque ripple of switched reluctance motors, a compensation cosine torque sharing optimization control strategy for switched reluctance motors was proposed by improving the traditional cosine torque sharing function. Based
LI Hongwei, LUO Hualin
doaj   +1 more source

Impacts of Climate Change on Runoff from Snowmelt (Case Study: Shahrchay basin Urmia) [PDF]

نشریه جغرافیا و برنامه‌ریزی, 2019
According to the importance of snowfall in supplying water of different regions especially mountainous areas, accurate estimation of snow water equvallent and changes of its coverage would be effective in agriculture, energy, management of reservoir and ...
Saeed jahanbakhsh, yagob din pazhoh, mohammad hossein aalinejhad   +2 more
doaj  

Indirect Detection Method of Rotor Position Based on DE-SVM

Cybernetics and Information Technologies, 2016
In view of the defects and deficiencies of existing detection methods of rotor position for Switched Reluctance Motor (SRM), an indirect Detection Method (DM) based on DE-SVM for Support Vector Machine (SVM) rotor position is proposed.
Wang Bo, Ji Xiaofu, Cai Jihe
doaj   +1 more source

Integration of aspect and slope in snowmelt runoff modeling in a mountain watershed

Water Science and Engineering, 2016
This study assessed the performances of the traditional temperature-index snowmelt runoff model (SRM) and an SRM model with a finer zonation based on aspect and slope (SRM + AS model) in a data-scarce mountain watershed in the Urumqi River Basin, in ...
Shalamu Abudu, Zhu-ping Sheng, Chun-liang Cui, Muatter Saydi, Hamed-Zamani Sabzi, James Phillip King   +5 more
doaj   +1 more source

Calpain small subunit homodimerization is robust and calcium‐independent

FEBS Letters, EarlyView.
Calpains dimerize via penta‐EF‐hand (PEF) domains. Using single‐molecule force spectroscopy, we measured the strength and kinetics of PEF–PEF homodimer binding. The interaction is robust, shows a transient conformational step before dissociation, and remains largely insensitive to Ca2+.
Nesha May O. Andoy, Trina Dykstra‐MacPherson, Mathias A. Bell, Peter L. Davies, Ruby May A. Sullan   +4 more
wiley   +1 more source

Ketazine‐Linked Covalent Organic Framework for Metal‐Free Electrocatalytic Nitrate‐to‐Ammonia Conversion

Angewandte Chemie, EarlyView.
A metal‐free fluorinated ketazine‐linked COF is introduced as an efficient electrocatalyst for nitrate reduction to ammonia under neutral conditions. Fluorine substitution enhances π–π stacking and crystallinity, enabling a Faradaic efficiency of 59.9% and an NH3 yield rate of 1639.9 µmol h−1 mgCOF−1 at −0.9 V versus RHE. This establishes an unexplored
Islam E. Khalil, Ashadul Adalder, Badr Elkamash, Narad Barman, Darosch Asgari, Luoxing Xiang, Warisha Tahir, Franziska Hess, Ranjit Thapa, Adisak Boonchun, Uttam Kumar Ghorai, Prasenjit Das, Arne Thomas   +12 more
wiley   +2 more sources