Results 21 to 30 of about 11,543 (264)

Aircraft observations of a lightning channel in STEPS [PDF]

Geophysical Research Letters, 2003
We analyze a portion of an intracloud lightning channel that was captured on video by an instrumented aircraft and mapped three‐dimensionally by a ground‐based lightning mapping array (LMA). By comparing the electric fields measured on the aircraft with a model which simulates the electrostatic field present after charge was effectively deposited by ...
Tom A. Warner, John H. Helsdon, Andrew G. Detwiler   +2 more
openaire   +1 more source

Optimal Design and Analysis of the Cooled Turbine Blade in Gas Turbines with CFD [PDF]

Journal of Applied Fluid Mechanics
In this study, the effects of the structural geometries of the channels used for cooling blades in the heated regions of the gas turbine exposed to high temperature were investigated.
E. Yildiz, F. Koca, I. Can
doaj   +1 more source

Energy Loss in Steep Open Channels with Step-Pools [PDF]

Water, 2020
Three-dimensional numerical simulations were performed for different flow rates and various geometrical parameters of step-pools in steep open channels to gain insight into the occurrence of energy loss and its dependence on the flow structure. For a given channel with step-pools, energy loss varied only marginally with increasing flow rate in the ...
Suresh Kumar Thappeta, S. Murty Bhallamudi, Venu Chandra, Peter Fiener, Abul Basar M. Baki   +4 more
openaire   +2 more sources

Two successive bidirectional leaders propagated in triggered lightning channel

Scientific Reports, 2022
A stepped leader propagated along the previous return-stroke channel in triggered lightning. After the stepped leader decayed, the first bidirectional leader went through the process of initiation, propagation and dissipation.
Junlin Wang, Quanxin Li, Jianguo Wang, Li Cai, Rui Su, Mi Zhou, Yadong Fan   +6 more
doaj   +1 more source

Stepped spillways with aerators: hydrodynamic pressures and air entrainment

RBRH, 2021
The possibility of damage due to the phenomenon of cavitation leads the design of stepped spillways considering maximum specific discharges of 15 to 30 m2/s, a limit considerably lower than that practiced on smooth chutes.
Rute Ferla, Carolina Kuhn Novakoski, Priscila dos Santos Priebe, Mauricio Dai Prá, Marcelo Giulian Marques, Eder Daniel Teixeira   +5 more
doaj   +1 more source

Potassium channel opening: a subtle two‐step

The Journal of Physiology, 2009
Voltage‐gated K+ channels undergo a voltage‐dependent conductance change that plays a key role in modulating cellular excitability. While the Open state is captured in crystal structures of Kv1.2 and a chimeric Kv1.2/Kv2.1 channel, the Close state and the mechanism of this transition are still a subject of debate.
Sanjeev K, Upadhyay, P, Nagarajan, M K, Mathew   +2 more
openaire   +3 more sources

Induced aeration flow over stepped spillways: mean pressures, air entrainment and flow behavior

RBRH, 2021
Stepped spillways can dissipate a great amount of energy during the flow passage over the chute, however these structures have limited operation due to the risk of cavitation damage.
Carolina K. Novakoski, Rute Ferla, Priscila dos Santos Priebe, Aline Saupe Abreu, Marcelo G. Marques, Maurício Dai Prá, Alba V. B. Canellas, Eder D. Teixeira   +7 more
doaj   +1 more source

Utility of Certain AI Models in Climate-Induced Disasters

World
To address the current challenge of climate change at the local and global levels, this article discusses a few important water resources engineering topics, such as estimating the energy dissipation of flowing waters over hilly areas through the ...
Ritusnata Mishra, Sanjeev Kumar, Himangshu Sarkar, Chandra Shekhar Prasad Ojha   +3 more
doaj   +1 more source

Gate Engineering in SOI LDMOS for Device Reliability

MATEC Web of Conferences, 2016
A linearly graded doping drift region with step gate structure, used for improvement of reduced surface field (RESURF) SOI LDMOS transistor performance has been simulated with 0.35µm technology in this paper.
Aanand, Sheu Gene, Imam Syed Sarwar, Lu Shao Wei, Aryadeep Chirag, Yang Shao Ming   +5 more
doaj   +1 more source

Digitalization in the Industries of Fuels and Motor Oils

Proceedings, 2023
With the advent of new digital communication channels, the conventional industry also stepped into direct communication with users and has the opportunity to advance by knowing and responding to the rapidly changing and evolving needs of the digital ...
Tatjana Cvetkov Čikošev
doaj   +1 more source