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السجلات المعروضة 31 -- 40 من 114
Effect Of Temperature On Hyalomma (Hyalomma) Impeltatum Schulze And Schlottke (Ixodoidea: Ixodidae)
(
Qatar University
, 1988 , Article)
The effect of 21, 25, 29 and 34°C on developmental period duration, weight of different stages in the life cycle and conversion efficiency in Hyalomma (H.) impeltatum Schuize and Schlottke was investigated at 75% relative ...
Studies On The Effect Of Cadmium Chloride On The Gonads Of The Developing Chick Embryos
(
Qatar University
, 1987 , Article)
Cadmium chloride was injected in doses of 5, 10, 15 and 20 /xg/egg into the yolk sac of 4—day—old chick embryos. Mortality due to cadmium intaxication increased with dose increase. The mortality rate of chick embryos ...
Ascending urinary tract infection in rats caused by Proteus mirabilis
(
Qatar University
, 1997 , Article)
A model for ascending unobstructed urinary tract infection was developed in female rats to study the pathogenesis of urinary tract infection by Proteus mirabilis. Urinary bladders of rats were inoculated by I. V. cannula ...
Influence of the cowpea weevil, callosobruchus maculatus f., and the saw - toothed grin beetls, oryzaephilus surinamensis L. On the moisture content and mould growth in stored grains
(
Qatar University
, 1986 , Article)
Presence of the cowpea weevil, Callosobruchus maculatus F., and the saw-toothed grain beetle, Orvxaephilus surinamensis L., and their propagation in cowpea and wheat, resulted in raising the moisture content of infested ...
Harmful Effects Of Sea Water Administration On Kidney Structure And Function
(
Qatar University
, 1992 , Article)
Ratlus rattus received oral int'usiuii „; 3 ml of sea water for 5 consecutive days. Certain blood parameters and kidney structure and function were studied 24 hours and one week later. Hematocrit. plasma osmolality, sodium, ...
On The Earthworm Fauna And Distribution In The State Of Qatar
(
Qatar University
, 1986 , Article)
This paper is a preliminary account of the earthworms collected in February and March, 1986, from 10 localities in Qatar. Five species, Amynthas corticis (Family Megascolecidae), Dichogaster bolaui (Family Octochaetidae), ...
Histological And Histochemical Study Of The Digestive Tract Of The Worm-Like Reptile*, Diplometopon Zarudnyi (Squamata)
(
Qatar University
, 1996 , Article)
The structure of the digestive tract of Diplometopon zarudnyi was studied by means of light microscopic histology and PAS reaction. The oesophagus is lined with stratified columnar epithelium while the stomach is lined ...
Effect of the insecticide sumicidin on the biology and survival of the american cockroach nymph periplaneta americana l. (blattidae, dictyoptera).
(
Qatar University
, 1995 , Article)
This study was conducted under laboratory conditions to evaluate the effect of sumicidin (a pyrethriod insecticide) on the heart rates, convulsion and mortality of the american coackroach nymph Periplaneta americana L., a ...
Fish diversity in correlation with some environmental factors in the mangal of two protectorate areas, ras muhammed and nabq on the red sea in egypt.
(
Qatar University
, 1997 , Article)
The present investigation is an attempt to study the fish diversity at five sites of the mangrove forests (Mangal) in two famous protectorate areas : Ras Muhammed and Nabq on the Red Sea in Egypt. The present investigation ...
Effects Of Chemical Pesticides On The Gravid Females And Stadia Of The Woodlouse, Porcellio Scaber (Latreille) (Isopoda, Oniscidea)
(
Qatar University
, 1991 , Article)
Studies were made on the mortality rates of the gravid females, and on the survival and growth rates of the stadia of the woodlouse Porcellio scaber (Latreille) exposed for a period of 21 days to sub-lethal concentrations ...