Results 31 to 40 of about 21,093 (207)

Study on safety operation of medium voltage distribution network [PDF]

open access: yesE3S Web of Conferences, 2021
Aiming at the problem of safe operation in the medium voltage distribution network with neutral point grounding through small resistance, the distribution network model was built, and on this basis, MW-level photovoltaic (PV) system, doubly fed Induction
Chen Xiaofang   +3 more
doaj   +1 more source

Development of superovulation program and heterologous in vitro fertilization test assessment in hamsters [PDF]

open access: yes, 2013
Superovulation has become a common assisted reproductive technology in the field of animal reproduction. In addition, zona-free hamster oocytes have been used in heterologous in vitro fertilization research to evaluate sperm function.
Hani, Homayun   +8 more
core   +1 more source

Robust design of a passive wind turbine system [PDF]

open access: yes, 2012
The effectiveness of full passive Wind Turbine (WT) systems has been recently demonstrated. Such low cost and reliable structures without active control and with a minimum number of sensors can be efficient only if the system design parameters are ...
André De Andrade   +5 more
core   +3 more sources

Battery sizing for a stand alone passive wind system using statistical techniques [PDF]

open access: yes, 2011
In this paper, an original optimization method to jointly determine a reduced study term and an optimum battery sizing is investigated. This storage device is used to connect a passive wind turbine system with a stand alone network. A Weibull probability
Belhadj, Jamel   +3 more
core   +2 more sources

Application of permanent magnet synchronous generators within small-scale hydropower systems [PDF]

open access: yesJournal on Processing and Energy in Agriculture, 2010
In the new millennium, the demand for electric power is expected to increase more rapidly. Hydroelectric power plants using hydro potential of small rivers are becoming one of the key issues in the energy sector. Hydro energy is one of the most important
Reljić Dejan   +2 more
doaj  

LSD1 is essential for oocyte meiotic progression by regulating CDC25B expression in mice [PDF]

open access: yes, 2015
Mammalian oocytes are arrested at prophase I until puberty when hormonal signals induce the resumption of meiosis I and progression to meiosis II.
Chen, T   +8 more
core   +1 more source

Model simplification and optimization of a passive wind turbine generator [PDF]

open access: yes, 2009
In this paper, the design of a "low cost full passive structure" of wind turbine system without active electronic part (power and control) is investigated. The efficiency of such device can be obtained only if the design parameters are mutually adapted
Abdelli, Abdenour   +3 more
core   +3 more sources

Analysis of the Effect of Winding Wire Cross-sectional Area and Rotating Speed on the Efficiency of 18 Slot 16 Pole Permanent Magnet Synchronous Generator

open access: yesProtek: Jurnal Ilmiah Teknik Elektro
The potential of renewable energy in Indonesia is very large with a total of 3,643.0 GW. One of them is wind energy, the huge potential of wind energy which is 154.9 GW is very wasted if it is not optimized as well as possible.
Irfan Delafena, Liliana Liliana
doaj   +1 more source

Adaptive sliding mode based active disturbance rejection control method for a direct-driven wind power conversion system

open access: yesThe Journal of Engineering, 2019
Considering the internal and external disturbances of the direct-driven wind energy conversion systems, i.e. multi-variable coupling, non-linear characteristic and modelling error, and the environmental disturbances, an adaptive sliding mode observer ...
Siyue Wang   +4 more
doaj   +1 more source

ẢNH HƯỞNG CỦA KÍCH DỤC TỐ LÊN ĐỘNG THÁI SINH DỤC VÀ KHẢ NĂNG SINH SẢN CỦA CẦY VÒI HƯƠNG (Paradoxurus hermaphroditus) CHẬM ĐỘNG DỤC

open access: yesTạp chí Khoa học Đại học Huế: Khoa học Tự nhiên, 2020
Nghiên cứu này được thực hiện để đánh giá hiệu quả của kích dục tố (PMSG – pregnant mare serum gonadotropin, HCG – human chorionic gonadotropin) lên thời gian xuất hiện, thời gian kéo dài động dục và hiệu suất sinh sản trên đối tượng cầy vòi hương chậm ...
Nguyen Thi Thu Hien   +2 more
doaj   +1 more source

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