Results 41 to 50 of about 999,024 (163)

Thermodynamics of an Accretion Disk Annulus with Comparable Radiation and Gas Pressure

open access: yes, 2007
We explore the thermodynamic and global structural properties of a local patch of an accretion disk whose parameters were chosen so that radiation pressure and gas pressure would be comparable in magnitude.
Blaes, Omer   +5 more
core   +1 more source

Experimental results concerning centrifugal impeller excitations [PDF]

open access: yes
The effect of working fluid on the dynamics of an impeller with radial vanes was investigated. The impeller was supported vertically from a very flexible quill shaft in order to produce a low critical speed, and to allow the fluid dynamic effects on the ...
Landadio, F. J., Vance, J. M.
core   +1 more source

What Have We Learned from MERRA about Reanalyses of the Stratosphere? [PDF]

open access: yes, 2012
The Modern-Era Retrospective analysis for Research and Applications (MERRA) reanalysis includes a well-resolved middle atmosphere. The upper boundary of the underlying model is in the mesosphere, near 80km, and the input data streams include the ...
Pawson, Steven
core   +1 more source

Design, fabrication and calibration of alpha particle densitometers for measuring planetary atmospheric density [PDF]

open access: yes
An alpha particle densitometer was developed for possible application to measurement of the atmospheric density-altitude profile on Martian entry. The device uses an Am-241 radioactive-foil source, which emits a distributed energy spectrum, located about
Hanser, F. A.   +2 more
core   +1 more source

Gemini NorthNIRI Spectra of Pluto and Charon: Simultaneous Analysis of the Surface and Atmosphere [PDF]

open access: yes
94035We report on our analysis of blended Pluto and Charon spectra over the wavelength range 1.4 to 2.5 m as obtained by the NIRI instrument on Gemini North on June 25-28, 2004.
Cook, Jason C.   +2 more
core   +1 more source

Mars Phoenix EDL Trajectory and Atmosphere Reconstruction Using NewSTEP [PDF]

open access: yes
This document describes the trajectory and atmosphere reconstruction of the Mars Phoenix Entry, Descent, and Landing using the New Statistical Trajectory Estimation Program.
Karlgaard, Christopher D.   +1 more
core   +1 more source

The 0.1m subsonic cryogenic tunnel at the University of Southampton [PDF]

open access: yes
The design and performance of a low speed one atmosphere cryogenic wind tunnel is described. The tunnel is fan driven and operates over the temperature range 305K to 77K at Mach numbers up to 0.28.
Goodyer, M. J.
core   +1 more source

Hospital Related Stress Among Patients Admitted to a Psychiatric In-patient Unit in India [PDF]

open access: yes, 2011
The psychiatric patient’s attitudes towards hospitalization have found an association between patient perceptions of the ward atmosphere and dissatisfaction.
Latha, KS, Ravi Shankar , BG
core  

Discussion of the technology and research in fuel injectors common rail system [PDF]

open access: yes, 2017
Common rail is one of the most important components in a diesel and gasoline direct injection system. It features a high-pressure (100 bar) fuel rail feeding solenoid valves, as opposed to a low-pressure fuel pump feeding unit injectors. Third-generation
Ishak, Izuan Amin   +5 more
core  

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