Results 41 to 50 of about 36,724 (301)

Distribution Features of Flow Patterns and Pressure Pulsations of Pump-Turbine in Five Operating Modes on the Four-Quadrant Plane

Frontiers in Energy Research, 2022
To meet the demand of the power grid for flexible regulation, pump turbines have to frequently and fleetly stop, start, and transition between different modes, causing many instability problems.
Dongliang Hu, Yongguang Cheng, Pengcheng Zhang, Xi Wang, Jinghuan Ding, Xiaoxi Zhang   +5 more
doaj   +1 more source

Interaction Between Convection and Pulsation [PDF]

, 2015
This article reviews our current understanding of modelling convection dynamics in stars. Several semi-analytical time-dependent convection models have been proposed for pulsating one-dimensional stellar structures with different formulations for how the
A Baglin, A Boury, A Grigahcène, A Grigahcène, A Moya, A Munteanu, A Nordlund, AA Townsend, AN Cox, AS Brun, AS Brun, AS Eddington, B Freytag, B Mosser, B Paczyński, CM Geroux, CS Rosenthal, CS Rosenthal, CW Straka, D Huber, D Mihalas, D Stello, D Stello, D-R Xiong, D-R Xiong, D-R Xiong, D-R Xiong, DA Keeley, DB Guenther, DO Gough, DO Gough, DO Gough, DO Gough, DO Gough, DO Gough, DO Gough, DO Gough, DO Gough, DO Gough, DO Gough, DO Gough, DO Gough, DO Gough, DO Gough, DO Gough, DR Xiong, DR Xiong, DR Xiong, DR Xiong, DR Xiong, DR Xiong, DW Kurtz, DW Kurtz, DW Kurtz, E Böhm-Vitense, E Mundprecht, E Rodríguez, E Schatzman, E Vitense, EA Olivier, EA Spiegel, EA Spiegel, EJ Öpik, EL Koschmieder, F Baudin, F Carrier, F Kamijo, F Kupka, F Kupka, FJ Robinson, G Bono, G Bono, G Gonczi, G Gonczi, G Gonczi, G Gonczi, G Houdek, G Houdek, G Houdek, G Houdek, G Houdek, G Houdek, G Houdek, G Houdek, G Houdek, G Houdek, G Houdek, G Houdek, GE Langer, GI Taylor, GI Taylor, GK Batchelor, GW Platzman, H Cugier, H Kjeldsen, H Kjeldsen, H Saio, H Shibahashi, H Siedentopf, H Siedentopf, HJ Muthsam, HM Antia, J Boussinesq, J Christensen-Dalsgaard, J Christensen-Dalsgaard, J Christensen-Dalsgaard, J Christensen-Dalsgaard, J Christensen-Dalsgaard, J Christensen-Dalsgaard, J Christensen-Dalsgaard, J Christensen-Dalsgaard, J Christensen-Dalsgaard, J Christensen-Dalsgaard, J Christensen-Dalsgaard, J Christensen-Dalsgaard, J Christensen-Dalsgaard, J Daszyńska-Daszkiewicz, J Daszyńska-Daszkiewicz, J De Ridder, J Montalbán, J Rotta, JA Guzik, JA Guzik, JA Guzik, JA Guzik, JC Suärez, JI Castor, JL Innis, JM Mihaljan, JO Petersen, JP Cox, JR Buchler, JR Elliott, JR Elliott, K Belkacem, K Belkacem, K Belkacem, K Hanjalic, KL Chan, L Biermann, L Biermann, L Biermann, L Biermann, L Bigot, L Prandtl, L Prandtl, LA Balona, LA Balona, LD Landau, LH Li, LV Keller, M Breger, M Gabriel, M Gabriel, M Gabriel, M Gehmeyr, M Grosjean, M Gruberbauer, M Gruberbauer, M Millionshtchikov, M Salaris, M Takata, M Takata, M-A Dupret, M-A Dupret, M-A Dupret, M-A Dupret, M-A Dupret, M-A Dupret, M-A Dupret, M-A Dupret, M-A Dupret, M-A Dupret, M-A Dupret, MH Montgomery, MH Montgomery, MS Cunha, MS Cunha, MS Miesch, N Baker, N Baker, N Baker, N Dolez, NH Baker, NH Baker, NJ Balmforth, NJ Balmforth, NJ Balmforth, NJ Balmforth, NJ Balmforth, O Kochukhov, P Goldreich, P Goldreich, P Kumar, P Ledoux, P Ledoux, PA Stamford, PA Yecko, PD Edmonds, PD Tooth, PH Smith, PY Chou, R Garrido, R Kuhfuß, R Samadi, R Smolec, R Smolec, R Smolec, R Smolec, R Swenson, R Trampedach, R Trampedach, R Trampedach, R Trampedach, RA García, RD Watson, RF Stein, RF Stein, RF Stein, RF Stellingwerf, RF Stellingwerf, RF Stellingwerf, RF Stellingwerf, RG Deupree, RG Deupree, RH Kraichnan, RK Ulrich, S Chandrasekhar, S Chandrasekhar, S Frandsen, S Hekker, S Mathur, S Théado, S Wedemeyer, S-A Orszag, SA Grossman, SC Tripathy, ST Fletcher, T Appourchaux, T Appourchaux, T Appourchaux, T Kallinger, TC Teixeira, TG Cowling, TM Brown, TS Metcalfe, TS Metcalfe, V Antoci, V Antoci, VM Canuto, VM Canuto, VM Canuto, VM Canuto, VM Canuto, W Dziembowski, W Dziembowski, W Dziembowski, W Heisenberg, W Rodi, W Unno, W Unno, W Unno, W Unno, W Unno, W Unno, WA Dziembowski, WH Ball, WJ Chaplin, WJ Chaplin, WP Jones, WP Jones, Y-C Kim, Z Magic, Z Magic   +273 more
core   +4 more sources

A light‐triggered Time‐Resolved X‐ray Solution Scattering (TR‐XSS) workflow with application to protein conformational dynamics

FEBS Open Bio, EarlyView.
Time‐resolved X‐ray solution scattering captures how proteins change shape in real time under near‐native conditions. This article presents a practical workflow for light‐triggered TR‐XSS experiments, from data collection to structural refinement. Using a calcium‐transporting membrane protein as an example, the approach can be broadly applied to study ...
Fatemeh Sabzian‐Molaei, Fredrik Orädd, Konstantinos Magkakis, Magnus Andersson   +3 more
wiley   +1 more source

Vibration analysis of large bulb tubular pump house under pressure pulsations

Water Science and Engineering, 2009
A 3D finite element model of the Huaiyin third pumping station of the Eastern Route of the South-to-North Water Transfer is described in this paper. Two methods were used in the calculation and vibration analysis of the pumping station in both the time ...
Xin Wang, Tong-chun Li, Lan-hao Zhao
doaj   +1 more source

Mud pump pressure pulsation control systems

, 2023
Drilling fluid is circulated through the well-bore during drilling operations to transport cuttings from the bottom of the hole to the surface. Hydrostatic high-pressure mud pumps are typically used for this purpose. Triplex pumps, which comprise three pistons mechanically displaced by 120 degrees, are the most common type of mud pump.
Pavković, Danijel, Šitum, Željko, Cipek, Mihael, Benić, Juraj   +3 more
openaire   +1 more source

Single‐molecule DNA flow‐stretch assays for high‐throughput DNA–protein interaction studies

FEBS Open Bio, EarlyView.
We describe an optimised single‐molecule DNA flow‐stretch assay that visualises DNA–protein interactions in real time. Linear DNA fragments are tethered to a surface and stretched by buffer flow for fluorescence imaging. Using λ and φX174 DNA, this protocol enhances reproducibility and accessibility, providing a versatile approach for studying diverse ...
Ayush Kumar Ganguli, Mohammad Nour Alsamsam, Ugnė Bagdonaitė, Van Truc Vu, Chun‐Jen Huang, Polina Kuzhir, Mindaugas Zaremba, Aurimas Kopūstas, Marijonas Tutkus   +8 more
wiley   +1 more source

Diagnostic of the unstable envelopes of Wolf-Rayet stars

, 2016
The envelopes of stars near the Eddington limit are prone to various instabilities. A high Eddington factor in connection with the Fe opacity peak leads to convective instability, and a corresponding envelope inflation may induce pulsational instability.
Bestenlehner, Joachim, Chene', Andre-Nicolas, Fossati, Luca, Grassitelli, Luca, Langer, Norbert, Louis, Nicole St., Sanyal, Debashis   +6 more
core   +1 more source

ULF waves in the low‐latitude boundary layer and their relationship to magnetospheric pulsations: A multisatellite observation [PDF]

, 1991
On April 30 (day 120), 1985, the magnetosphere was compressed at 0923 UT and the subsolar magnetopause remained near 7 REgeocentric for ∼2 hours, during which the four spacecraft Spacecraft Charging At High Altitude (SCATHA), GOES 5, GOES 6, and Active ...
Allan, Anderson, Anderson, Atkinson, Aubry, Bryant, Burch, Chen, Collin, Couzens, Cummings, Cummings, David G. Sibeck, Dungey, Eastman, Engebretson, Fairfield, Fairfield, Fairfield, Farrugia, Farrugia, Fennell, Greenstadt, Greenwald, Grubb, Hardy, Hardy, Harlan E. Spence, Hasegawa, Hones, Iijima, Inhester, Kazue Takahashi, Kivelson, Klumpar, Lanzerotti, Lassen, Ledley, Lee, Lee, Lopez, McEntire, Mead, Mitchell, Miura, Newell, Nourry, Ogilvie, Ogilvie, Ong, Patrick T. Newell, Potemra, Potemra, Poulter, Radoski, Radoski, Rezeau, Sckopke, Sckopke, Sharp, Sibeck, Sibeck, Sibeck, Sibeck, Song, Southwood, Southwood, Southwood, Southwood, Sugiura, Takahashi, Takahashi, Takahashi, Takahashi, Walker, Walker, Wolfe, Wolfe   +77 more
core   +2 more sources

Life‐Threatening Bradycardia in Anti‐NMDA‐Receptor Encephalitis and a Novel Use for Permanent Pacing

Annals of Clinical and Translational Neurology, EarlyView.
ABSTRACT Background Pediatric anti‐NMDA receptor encephalitis (pNMDARE) is an autoantibody‐mediated disorder that can cause severe autonomic dysfunction, including symptomatic bradycardia and asystole. Dysautonomia can last for years, making it very challenging to manage.
Sarah Tucker, Abhijit Das, Andres Jimenez, Areeba Basit, Yike Jiang, Emily A. Smitherman, Heather Van Mater, Taylor Howard, Alexander J. Sandweiss, Kristen S. Fisher   +9 more
wiley   +1 more source

Magnetospheric Cavity Modes Driven by Solar Wind Dynamic Pressure Fluctuations

, 2010
We present results from Lyon-Fedder-Mobarry (LFM) global, three-dimensional magnetohydrodynamic (MHD) simulations of the solar wind-magnetosphere interaction.
Han, Jacobs, Kepko, Kivelson, Korotova, Lyon, M. K. Hudson, M. Wiltberger, Matsuoka, S. G. Claudepierre, S. R. Elkington, Sibeck, Viall, W. Lotko, Wiltberger, Wright   +15 more
core   +1 more source