Results 41 to 50 of about 8,516 (306)
, 2012 We propose and demonstrate a flexible and high-speed impulse radio ultrawideband (IR-UWB) over fiber system using various modulation schemes. Two kinds of fully Federal Communication Commission (FCC) compliant UWB pulses are produced, which is based on ...
Yu, Hongchen +5 more
core +1 more source
The forming and emission of high power electromagnetic pulses
ITM Web of Conferences, 2018 An impulse energy source, a power conditioning system and an electromagnetic field emitter are essential to generate an electromagnetic field pulse (EMFP) with a specific frequency bandwidth.
Jakubiuk Kazimierz +2 more
doaj +1 more source
Evaluation of the cavitation generator efficiency in the hydro impulsive loosening of a coal-bed [PDF]
E3S Web of Conferences, 2019 The paper presents the results of mining and experimental work, bench tests and theoretical studies of the energy characteristics of the stationary and pulsating fluid flow, which allow to estimate the efficiency of the cavitation generator in the hydro ...
Zberovskyi Vasyl +2 more
doaj +1 more source
FEBS Letters, EarlyView.Embryo‐like structures (stembryos) are an innovative tool, but they are hindered by experimental variability and limited developmental potential. DNA methylation is crucial for mammalian development, but its status in stembryo models is poorly characterized.
Sara Canil +4 more
wiley +1 more source
From mice to humans—divergent strategies for intestinal homeostasis and regeneration
FEBS Letters, EarlyView.Recent advances such as organoid genome editing, xenotransplantation, imaging, and whole‐genome sequencing have enabled direct studies of human intestinal stem cells (ISCs). These studies reveal species‐specific features, including slower ISC proliferation, distinct injury responses, slower somatic mutation accumulation in humans, and an inverse ...
Keiko Ishikawa +2 more
wiley +1 more source
TRANSMISSION AND RECEPTION OF UWB SIGNALS BASED ON ANTENNA DECODING
Information and Telecommunication Sciences, 2018 Background. A new idea for receiving and transmitting impulse radio ultrawideband signals with Pulse Position Coding (PPC) in transmitter station and antenna decoding in receiver station is proposed.
Gleb Avdeyenko +2 more
doaj +1 more source
An Accurate Evaluation of Switching Impulse Voltages for High-Voltage Tests
Energies, 2022 For assessment of the insulation performance of high-voltage (HV) equipment installed in extra-high-voltage (EHV) systems, switching impulse voltage tests are performed in an HV testing laboratory.
Peerawut Yutthagowith
doaj +1 more source
GENERATION AND SPATIAL PROPAGATION OF LANDSLIDE GENERATED IMPULSE WAVES [PDF]
Coastal Engineering Proceedings, 2017 Large subaerial mass wasting into water may generate large waves along coast lines and in bays. Hazard assessment of such an events is based on the decay rate of these impulse waves along their propagation path to populated areas and infrastructure along the shoreline.
Frederic M Evers, Willi H Hager
openaire +1 more source
Impulsive control of a nuclear spin generator
Journal of Computational and Applied Mathematics, 2003 Impulsive control of a nuclear spin generator is considered. Let be \[ X^T= (X_1,X_2,X_3),\qquad A= \begin{pmatrix} -\beta & 1 & 0\\ -1 &\beta(\gamma- 1) & 0\\ 0 & 0 & -\alpha\beta\end{pmatrix}, \] \[ \Phi(X)= \beta\gamma\begin{pmatrix} 0\\ -X_2 X_3\\ X^2_2\end{pmatrix},\qquad \alpha\in (0,1],\quad \beta,\gamma\in \mathbb{R}_+. \] The impulsive control
Sun, Jitao, Zhang, Yinping
openaire +2 more sources
Structural insights and therapeutic targets in Acinetobacter baumannii capsule biosynthesis
FEBS Letters, EarlyView.Hypervirulent KL49 A. baumannii's capsular polysaccharide contains the nonulosonic acid 8‐epi‐Leg5,7Ac2, synthesized by epimerization via ElaA, ElaB, and ElaC. Crystal structures of ElaA, ElaB, and ElaC reveal their role in CMP‐Leg5,7Ac2 synthesis and regioselective C8 epimerization.
Woo Cheol Lee +7 more
wiley +1 more source