Now showing items 1-10 of 38
Periodic operation of a reverse osmosis water desalination unit
(Marcel Dekker Inc, New York, NY, United States, 1998)
An experimental investigation was carried out to study the periodic operation of a reverse osmosis water desalination unit with a spiral-wound membrane. The operating pressure was varied according to a symmetric square ...
Asymptotic formulae of liouville-green type for a general fourth-order differential equation
As asymptotic form of solutions of Liouville-Green type for a general fourth-order differential equation are given under general conditions on the coefficients for large x. � 1998 Rocky Mountain Mathematics Consortium.
Optical absorption in novel a-Si, S:F, H alloys
Optical absorption measurements of hydrofluorinated amorphous silicon-sulfur alloys are reported. The Tauc optical gap was determined from optical absorption spectra for photon energies at the optical absorption edge. It ...
Probing the nature of the gravitational field of antimatter using space borne accelerator-detector system
In the past few decades the idea of "antigravity" received a growing interest following speculations that matter and antimatter would repel each other in ordinary tensor gravity. Many arguments were raised against antigravity. ...
Day-length and extraterrestrial radiation for Sudan: A comparative study
(Gordon & Breach Science Publ Inc, Newark, NJ, United States, 1998)
A comparative study of estimating the day-length, S0, and extraterrestrial radiation, H0, is conducted, with special reference to Sudan. Due to the definitions of the formulae of Cooper and Hay, differences in S0-values ...
Plastic deformation and vortex dynamics instability of the flux-line lattice in high-temperature superconductors
The role of plastic deformations on the vortex dynamics instability of the fluxline lattice (FLL) in high-temperature superconductors is investigated. A model is proposed where elastic instability characterizes the FLL ...
Layered flow in slider bearings
(Professional Engineering Publishing, 1998)
A procedure for solving the Navier-Stokes equations for the steady, one-dimensional flow of a binary water-based lubricant within an infinite slider bearing is described. The method uses an iterative process (Newton-Raphson ...
Statistical inference for breakdown voltage in SF6 GIS from first breakdown data
The statistical distributions of first ac breakdown field data were shown to be represented by the three-parameter Weibull distribution. Many experimental data compiled from the literature in various gap configurations and ...
Synthesis of novel pyrindine derivatives from a facile reaction of 2,5- bisarylidenecyclopentanone and malononitrile
Starting from 2,5-bisarylidenecyclopentanone and malononitrile (1:1) several novel pyrindine derivatives were synthesized by a facile and convenient one-pot reaction using sodium ethoxide in absolute ethanol at room ...
Assessment of toxicity level of fluoride in underground waters used for irrigation in Bahrain
The toxicity level of underground waters of the semi-arid tract of Bahrain was examined for the fluoride concentration and other chemical constituents such as sodium absorption ratio (SAR), chloride, sulfate, bicarbonate, ...