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السجلات المعروضة 21 -- 25 من 25
Variation Of The Electrical Properties Of Manganese Thin Films With Deposition Conditions
(
Qatar University
, 1989 , Article)
The behaviour of the electrical properties of manganese thin films of different thickness (240 - 1500 A) evaporated under different deposition conditions was studied. The effect of the rate of evaporation (1-7 A/s), the ...
Paleozoic Igneous Activity In Egypt
(
Qatar University
, 1989 , Article)
Based on available isotopic age data, including a few K/Ar ages obtained by the writer, a geochronological sequence of the main phases of igneous activity in Egypt during the Paleozoic is presented. Five main phases at ...
By-Catch Of Commercial Bottom Trawl Fishery From Qatar Waters, Arabian Gulf
(
Qatar University
, 1989 , Article)
The by-catch of the bottom trawl fishery from Qatar water, Arabian Gulf was analysed during the year (1987) on bimonthly basis. It was estimated that 496-635 tons were discarded as by-catch which included a lot of commercialy ...
Geology of wadi atalla - el missikat area, eastern desert, egypt.
(
Qatar University
, 1989 , Article)
Wadi Atalla-El Missikat area covers about 2,000 Km2 in the central Eastern Desert of Egypt, between latitudes 26° 10' and 26° 40' N, and longitudes 33° 15' and 33° 40' E. The area is mainly formed of basement complex except ...
The electrical and optical properties of poly (4-ethylidene-l, 3-cyclopentylene vinylene)
(
Qatar University
, 1989 , Article)
The intrinsic viscosity, electrical conductivity and IR absorbance were measured for the sample of poly (4—ethylidene—1, 3—cyclopentylene vinylene). The sample is strongly oxidized in air. Under vacuum the activation energy ...