Results 31 to 40 of about 44,519 (152)

Study on the Ovaries and Oocytes Quality in Swines

open access: yesScientific Papers Animal Science and Biotechnologies, 2023
Recent developments in understanding the physiological mechanisms of reproduction control can be adapted to swine reproductive management. This article points out the procedures that can be used to induce estrus, in pre-pubescent and anestrus gilts, and ...
Ion Carabă   +6 more
doaj  

Virtual oscillator‐based methods for grid‐forming inverter control: A review

open access: yesIET Renewable Power Generation, 2022
In inverter‐dominant power systems, grid‐forming (GFM) inverters regulate voltage and frequency. To construct GFM inverters, conventionally, various control methods based on synchronous machine emulation or droop characteristics have been employed ...
Sima Azizi Aghdam, Mohammed Agamy
doaj   +1 more source

A novel fixed-time smooth synchronization controller for stabilizing chaotic spacecraft formation

open access: yesAlexandria Engineering Journal
This article addresses two essential gaps in chaos synchronization. First, it studies fixed-time leader-follower spacecraft formation (LFSF) synchronization of multiple chaotic spacecraft systems, a previously unexplored area.
Muhammad Shafiq, Israr Ahmad
doaj   +1 more source

Effect of increasing energy levels of diet and heat synchronization on steroid hormones and reproductive indices in Holstein heifers [PDF]

open access: yesĀsīb/shināsī-i Darmāngāhī-i Dāmpizishkī, 2013
The aim of the present study was to determine the effects of increasing energy levels of diet and heat synchronization on steroid hormones and fertility in Holstein heifers.
akbar pirestani   +3 more
doaj  

Impact of vitamin e and selenium prior the ovsynch synchronization on reproductive performance in friesian dairy cows during hot season [PDF]

open access: yesKafkas Universitesi Veteriner Fakültesi Dergisi
Heat stress during hot season enhances oxidative stress, alters hormonal secretion and adversely affects reproductive performance. So, it"s necessary to supply antioxidants such as vitamin E and selenium.
Al-Moataz Bellah Mahfouz SHAARAWY   +5 more
doaj   +1 more source

Influence of vaccination time relative to heifers' synchronization on infectious bovine rhinotracheitis virus antibody and stress markers responses

open access: yesOne Health Bulletin
Objective: To characterize the influence of infectious bovine rhinotracheitis (IBR) vaccination time regarding the start of estrus synchronization on antibody titer, inflammatory reaction and oxidative stress in Holstein heifers.
Wesam Yousef   +4 more
doaj   +1 more source

Linear active disturbance rejection seamless switching control strategy of virtual synchronous generator

open access: yes电力工程技术
Microgrids controlled by virtual synchronous generators (VSG) experience inrush currents and voltage offsets during transitions between grid-connected and islanded modes. These phenomena cause fluctuations in active power and frequency, thereby affecting
Changjiu TANG   +5 more
doaj   +1 more source

Hormonal protocols for in vitro production of Zebu and taurine embryos

open access: yesPesquisa Agropecuária Brasileira, 2014
The objective of this work was to evaluate the effects of hormonal synchronization protocols, associated or not with follicular development stimulation, on the recovery of oocytes and on in vitro production of Bos indicus and B.
Carlos Antônio de Carvalho Fernandes   +7 more
doaj   +1 more source

"Does the thalamo-cortical synchrony play a role in seizure termination?

open access: yesFrontiers in Neurology, 2015
The mechanisms underlying seizure termination are still unclear despite their therapeutic importance. We studied thalamo-cortical connectivity and synchrony in human mesial temporal lobe seizures in order to analyze their role in seizure termination ...
Elisa eEvangelista   +8 more
doaj   +1 more source

PRE-SYNCHRONIZATION CONTROL BASED ON VSG PARAMETER COOPERATIVE ADAPTATION

open access: yesWorld Journal of Engineering Research
Virtual synchronous generator (VSG) emulate synchronous generators to provide inertia and damping support for distributed power integration. However, conventional VSG control employs fixed parameters that hinder dynamic adaptation to system changes, often resulting in grid connection impact currents and voltage harmonics. To overcome these limitations,
openaire   +1 more source

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