Results 71 to 80 of about 54,360 (305)

Disadvantageous effects of vibrations on the micro-hydraulic relief valve: experimental approach

Aviation
The paper discusses the negative impact of external mechanical vibrations, which lead to the malfunction of drive systems, particularly affecting hydrostatic drives.
Krzysztof Towarnicki
doaj   +1 more source

Multidimensional realistic modelling of Cepheid-like variables. I: Extensions of the ANTARES code

, 2012
We have extended the ANTARES code to simulate the coupling of pulsation with convection in Cepheid-like variables in an increasingly realistic way, in particular in multidimensions, 2D at this stage. Present days models of radially pulsating stars assume
Kupka, Friedrich, Mundprecht, Eva, Muthsam, Herbert J.   +2 more
core   +1 more source

Planar Solid‐State Nanopores Toward Scalable Nanofluidic Integration Based on CMOS Technology

Advanced Engineering Materials, EarlyView.
We present a scalable silicon‐based fabrication strategy for planar solid‐state nanopores to enable their integration with complex nanofluidic systems. Prototype devices demonstrate normal voltage‐current characteristics, good noise performance, and appreciable streaming currents. Our CMOS‐compatible fabrication process offers precise geometric control
Ngan Hoang Pham, Chenyu Wen, Mohammad Hadi Khaksaran, Won‐Yong Lee, Javier Cruz, Klas Hjort, Dongping Wu, Shi‐Li Zhang   +7 more
wiley   +1 more source

Effects of a Bladder Accumulator on Pressure Pulsation of Urea Dosing System

IEEE Access, 2019
Non-air-assisted urea dosing systems (NAUDSs) with diaphragm pump are usually used in selective catalytic reduction (SCR) systems to supply the urea water solution.
Youcheng Shi, Shudong Yang, Xiwei Pan, Yinshui Liu   +3 more
doaj   +1 more source

On the understanding of pulsations in the atmosphere of roAp stars: phase diversity and false nodes

, 2011
Studies based on high-resolution spectroscopic data of rapidly oscillating Ap stars show a surprising diversity of pulsation behavior in the atmospheric layers, pointing, in particular, to the co-existence of running and standing waves.
Baldry, Balona, Bigot, Bigot, Bruntt, Cunha, Cunha, Cunha, Dziembowski, Elkin, Elkin, Gautschy, Gough, Gruberbauer, Hubrig, J. C. Sousa, Karttunen, Khomenko, Kochukhov, Kochukhov, Kurtz, Kurtz, Kurtz, Kurtz, Kurtz, M. S. Cunha, Mkrtichian, Morel, Ryabchikova, Ryabchikova, Sachkov, Saio, Saio, Saio, Sousa   +34 more
core   +1 more source

Prediction of Surface Topography Parameters in Direct Laser Interference Patterning of Stainless Steel Using Infrared Monitoring and Convolutional Neural Networks

Advanced Engineering Materials, EarlyView.
This study presents an infrared monitoring approach for direct laser interference patterning (DLIP) combined with a convolutional neural network (CNN). Thermal emission data captured during structuring are used to predict surface topography parameters.
Lukas Olawsky, Marcelo Sallese, Leander Kläber, Clemens Kuhn, Keming Du, Andrés Fabián Lasagni   +5 more
wiley   +1 more source

Pulsation modes in rapidly rotating stellar models based on the Self-Consistent Field method

, 2009
Context: New observational means such as the space missions CoRoT and Kepler and ground-based networks are and will be collecting stellar pulsation data with unprecedented accuracy. A significant fraction of the stars in which pulsations are observed are
A. Skumanich, Alexander, Bonazzola, Breger, Caughlin, Christensen-Dalsgaard, Clement, Cowling, D. R. Reese, Deupree, Deupree, Dintrans, Dziembowski, Eggleton, Gough, Gough, Graboske, Jackson, Jackson, Jackson, K. B. MacGregor, Kippenhahn, Ledoux, Lignières, Lignières, Lignières, Lignières, Lovekin, Lovekin, Lynden-Bell, MacGregor, Ostriker, Reese, Reese, Reese, Rieutord, Rieutord, Rogers, S. Jackson, Saio, Schou, Soufi, T. S. Metcalfe, Tassoul, Vandenberg   +44 more
core   +1 more source

YREC: The Yale Rotating Stellar Evolution Code [PDF]

, 2007
The stellar evolution code YREC is outlined with emphasis on its applications to helio- and asteroseismology. The procedure for calculating calibrated solar and stellar models is described.
A. Mazumdar, A. Mazumdar, A. Sills, A.A. Thoul, A.S. Endal, B. Chaboyer, C. Angulo, C. W. Straka, C.A. Iglesias, C.S. Rosenthal, C.W. Straka, C.W. Straka, D. B. Guenther, D.B. Guenther, D.B. Guenther, D.B. Guenther, D.B. Guenther, E. Böhm-Vitense, F.J. Robinson, F.J. Robinson, F.J. Rogers, G. Wuchterl, J.-P. Zahn, J.N. Bahcall, J.N. Bahcall, J.N. Bahcall, J.N. Bahcall, J.P. Cox, J.W. Ferguson, K.S. Krishna Swamy, L. H. Li, L.G. Henyey, L.H. Li, L.H. Li, M. Schwarzschild, N. Itoh, P. Demarque, P. Edmonds, P. Kervella, R. Kippenhahn, R. Kuhfuß, R.B. Larson, R.B. Stothers, R.F. Stein, S. Basu, S. Yi, S. Yi, S.A. Barnes, T.J. Lydon, T.J. Lydon, V.M. Canuto, W. Unno, Y.-C. Kim, Y.-W. Lee   +53 more
core   +2 more sources

Influence of Sample Preparation and Processing Procedures on the Thermal Diffusivity of MgO‐C Refractories

Advanced Engineering Materials, EarlyView.
The thermal diffusivity of MgO‐C refractories is highly sensitive to sample preparation and processing procedures. In this article, the effects of coking sequence, machining conditions, structural inhomogeneity, and graphite coating application on measurements using laser flash apparatus are systematically investigated.
Luyao Pan, Rhena Wulf, Till M. J. Stadtmüller, Christos G. Aneziris, Tobias M. Fieback   +4 more
wiley   +1 more source

Investigation and modeling of space shuttle main engine shutdown transient chugging [PDF]

The space shuttle main engines experience a low frequency pressure pulsation in both the fuel and oxidizer preburners during the shutdown transient.
George, P. E., II
core   +1 more source