Results 11 to 20 of about 11,543 (264)
Initial steps in the opening of a Shaker potassium channel [PDF]
Proceedings of the National Academy of Sciences, 2012 The structural model of a K V (K + -selective, voltage-gated) channel in the open state is known (Protein Data Bank ID code 2R9R). Each subunit of the channel has four negatively charged residues distributed in the transmembrane segments S1, S2, and S3 ...
Toshinori, Hoshi, Clay M, Armstrong
openaire +2 more sources
Flow resistance in mountainous streams with stepped channel
Shui kexue jinzhan, 2019 The configuration of stepped channels in mountainous streams is influenced by the complex hydraulic characteristics,like the inflow,sediments and the larger slope river-bed.
LUO Ming +4 more
doaj +1 more source
IEEE Journal of the Electron Devices Society, 2022 A novel p-GaN gate AlGaN/GaN high electron mobility transistor (HEMT) structure with a stepped hybrid GaN/AlN buffer layer (S-HEMT) is proposed and simulated by the Sentaurus TCAD in this paper.
Yuan Wang +5 more
doaj +1 more source
A study of the debris flow activity on the one-stepped channel slope
Soil and Water Research, 2015 The purpose of this study is to evaluate the behaviour and mechanism of debris flow on various slopes through numerical simulation. The numerical simulation was performed using the Finite Difference Element Method based on the equation of mass ...
Sungduk KIM, Hojin LEE
doaj +1 more source
Study of aeration efficiency at stepped channels [PDF]
Water Management, 2003 The oxygen concentration in surface waters is a prime indicator of the quality of that water for human use as well as use by the aquatic biota. Hydraulic structures can increase dissolved oxygen levels by creating turbulent conditions where small air bubbles are carried into the bulk of the flow. Stepped channels are a particular instance of this, and
A. Baylar, M. E. Emiroglu
openaire +1 more source
AERATED FLOW CHARACTERISTICS ON STEPPED CHANNELS
PROCEEDINGS OF HYDRAULIC ENGINEERING, 2005 Stepped channels are effective for dissipating the energy of supercritical flows that occur at steep channels, dams, weirs, and drop structures. As stepped channel flows are characterized as aerated flows, it is important to estimate the energyh ead of the aerated flow for a hydraulic design of the stepped channel.
TAKAHASHI, Masayuki +2 more
openaire +3 more sources
History of stepped channels and spillways: a rediscovery of the “wheel” [PDF]
Canadian Journal of Civil Engineering, 1995 Recently, spillways with a stepped profile have regained interest and favor among design engineers to pass flood waters over the dams. The stepped geometry enhances the energy dissipation above the spillway and reduces the size of a downstream stilling basin.
openaire +4 more sources
Electron density measurement of a lightning stepped leader by oxygen spectral lines
AIP Advances, 2018 The time-resolved spectrum of a lightning stepped leader in downward process has been obtained by using a slitless spectrograph. Neutral oxygen and nitrogen spectral lines in the near infrared region are observed in the spectra.
Jianyong Cen +6 more
doaj +1 more source
Characteristics of Regular Pulse Bursts Generated From Lightning Discharges
Frontiers in Environmental Science, 2021 In this work, we studied the waveforms of all lightning discharges from about 15 min. Eighty-three percent of all lightning discharges contain particular waveforms called regular pulse bursts (RPBs), which have regular microsecond-scale electric or ...
Wang Yanhui +7 more
doaj +1 more source
Discharge coefficient of flow over Al-Shalalat stepped weir on Al-Khusr River
Applied Water Science, 2021 Many hydraulic structures are constructed in an open channel according to the purposes and the nature of the region. Weir is one of these structures which is used for discharge measurements as well as rising water depth in irrigation channels.
Azza N. Altalib
doaj +1 more source