Search
Now showing items 1-10 of 15
Optimization of the skew angle of rotor magnetic poles in permanent magnet machines based on the inverse problem method
(
IEEE
, 1997 , Conference)
This paper presents optimization of the skew angle of rotor magnetic poles in permanent magnet class of machines. The skew angle optimization is achieved using the gradient based inverse problem methodology. The paper ...
Inhibition of the acid corrosion of iron with haloacetic acids
(
Scientific Publishers of India
, 1997 , Article)
The efficiency of chloro, dichloro, trichloro, bromo, and iodoacetic acids as inhibitors for acid corrosion of iron was studied using polarization technique. A significant retardation of the corrosion rate is observed in ...
Radon concentration determination in some dwellings of Doha city of Qatar
(
Elsevier
, 1997 , Article)
Yearly average radon concentrations have not been reported yet in Qatar. Only few measurements on indoor radon concentrations have been conducted during the autumn season in 1992. To complete these measurements a determination ...
Positron annihilation lifetime study of pure and treated polyvinyl chloride
(
scientific.net
, 1997 , Article)
Positron annihilation lifetime technique (PAL) has been applied to investigate the behavior of the free volume in pure and doped polyvinyl chloride (PVC) as a function of Pb concentration and temperature. It is noticed ...
Determination of glafenine in dosage forms and serum by thin layer densitometry and high performance liquid chromatography
(
Elsevier
, 1997 , Article)
New thin layer densitometry and high performance liquid chromatography (HPLC) methods are described for quantitative determination of glafenine in dosage forms in the presence of its photo-degradation products and in serum ...
Plastic Membrane Electrodes for the Potentiometric Determination of Codeine in Pharmaceutical Preparations
(
Springer New York
, 1997 , Article)
Four PVC membrane electrode systems responsive to codeinium cation are described. These electrodes are based on the use of the ion-association complexes of the codeinium cation with tetraphenylborate and reineckate ...
Mercurimetric potentiometric determination of barbiturates using a solid-state iodide ion-selective electrode
(
Taylor and Francis Inc.
, 1997 , Article)
A simple potentiometric method is described for mercurimetric titration of barbiturates using a solid-state iodide ion-selective electrode. The optimum titration conditions involve the use of a borate buffer of pH 9-10 as ...
Ground- and excited-state properties of some 3,4-dihydro-1-(2-p-substituted benzylidene)naphthalenones: substituent and environmental effects
(
John Wiley & Sons, Ltd.
, 1997 , Article)
Electronic absorption and steady-state fluorescence emission of seven 3,4-dihydro-1-(2-p-substituted benzylidene)naphthalenones (1–7) show sizable solvent dependence. The charge-transfer (CT) absorption maxima of these ...
Optical and electrical properties of a new polymer
(
John Wiley & Sons, Inc.
, 1997 , Article)
Thin film of poly (5-isopropylidenecyclo-1,4-vinylene-2,3-dicarboxylicacidamide-s-methyl hydrazinecarbodithioate) (II) (Scheme 1) of 5 μm thickness was prepared. The dielectric properties of the prepared sample were studied ...
A Spreadsheet Teaching Tool For Analysis Of Pipe Networks
(
Qatar University
, 1997 , Article)
Spreadsheets are used widely in engineering to perform several analysis and design calculations. They are also very attractive as educational tools due to their flexibility and efficiency. This paper demonstrates the use ...