Results 61 to 70 of about 36,724 (301)

Intense Mass Loss from C-rich AGB Stars at low Metallicity?

open access: yes, 2008
We argue that the energy injection of pulsations may be of greater importance to the mass-loss rate of AGB stars than metallicity, and that the mass-loss trend with metallicity is not as simple as sometimes assumed.
Andersen   +22 more
core   +1 more source

Testing and Numerical Analysis of Abnormal Pressure Pulsations in Francis Turbines

open access: yesEnergies
During the flood season, Francis turbines often operate under low-head and full-load conditions, frequently experiencing significant pressure pulsations, posing potential threats to the safe and stable operation of the units.
Lu Jia   +4 more
doaj   +1 more source

Improvement of Intake Structures in a Two-Way Pumping Station with Experimental Analysis

open access: yesApplied Sciences, 2020
Pumping stations are important regulation facilities in a water distribution system. Intake structures can generally have a great influence on the operational state of the pumping station.
Yanjun Li   +4 more
doaj   +1 more source

A lumped-parameter model of the cerebrospinal system for simulating syringomyelia [PDF]

open access: yes, 2009
This paper was presented at the 2nd Micro and Nano Flows Conference (MNF2009), which was held at Brunel University, West London, UK. The conference was organised by Brunel University and supported by the Institution of Mechanical Engineers, IPEM, the ...
2nd Micro and Nano Flows Conference (MNF2009)   +3 more
core  

Pulsations in Hydrogen Burning Low Mass Helium White Dwarfs

open access: yes, 2010
Helium core white dwarfs (WDs) with mass M
Arras, Phil   +2 more
core   +1 more source

Relativistic simulations of the phase-transition-induced collapse of neutron stars [PDF]

open access: yes, 2008
An increase in the central density of a neutron star may trigger a phase transition from hadronic matter to deconfined quark matter in the core, causing it to collapse to a more compact hybrid-star configuration.
Abdikamalov, E. B.   +3 more
core   +1 more source

Numerical Simulation of Pressure Pulsations in Francis Turbines

open access: yesIOP Conference Series: Earth and Environmental Science, 2012
For more than 150 years, hydraulic power plants have been strongly contributing to energy generation. At present, with the expanding participation of other non-storable renewable energy sources in the electrical market composition, water turbines can importantly contribute to the electrical grid stability and to energy storage.
M V Magnoli, R Schilling
openaire   +1 more source

Thermoreflectance Detection of Point Defects Resulting from Focused Ion Beam Milling

open access: yesAdvanced Engineering Materials, EarlyView.
Focused ion beam (FIB) milling is a common tool for nanoscale material processing, however irradiation damage, redeposition, and contamination can occur. We use several characterization tools to show FIB‐induced effects beyond 1 mm from the milled area.
Thomas W. Pfeifer   +3 more
wiley   +1 more source

Transient Simulation and Analysis of Runaway Conditions in Pumped Storage Power Station Turbines Using 1D–3D Coupling

open access: yesFluids
Pumped-storage power plants play a vital role in power systems by providing peak load regulation, frequency control, and phase modulation services. The safety and stability of these plants critically depend on understanding transient processes during ...
Xiaowen Yang   +6 more
doaj   +1 more source

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

open access: yesAdvanced 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   +7 more
wiley   +1 more source

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