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Now showing items 51-60 of 77
Scanning electron microscopy of the egg-shell of the fly synthesiomyia Nudiseta (wulp)
(
Qatar University
, 1994 , Article)
The ultrastructure of the egg-shell of the fly Synthesiomyia nudiseta has been studied by scanning electron microscopy. The surface of the outer chorion is highly ridged, grooved and has a reticulate appearance except at ...
ultrastructural observations on the effect of the insecticide "aldrin" on some neurosecretory cells of the cerebral ganglion of the earthworm aporrectodea caliginosa
(
Qatar University
, 1994 , Article)
The effect of the insecticide "Aldrin" on the neuroglia and neurosecretory cells of the earthworm Aporrectodea caliginosa was studied. The fine changes on the organdies of certain neurosecretory cells was observed by light ...
Regeneration from different levels along the tail of the geckonid lizard, Bunopus tuberculatus
(
Qatar University
, 1994 , Article)
Study of the influence or amputation level on regenerate length, elongation rate and mitotic index of the tail of the geckonid lizard, Bunopus tuberculatus revealed that the tails amputated such that three-fourth, or ...
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 ...
Regeneration of the vagus nerve after highly selective vagotomy, an autoradiographic study in the ferret stomach .
(
Qatar University
, 1995 , Article)
This study investigates the regeneration of the vagal nerve fibres after highly selective vagotomy in the ferret stomach by using the autoradiographic technique.
Autoradiographic examination of the body of the stomach in ...
Population Structure And Growth Curve Of Acanthopleura Gemmata (Mollusca: Polyplacophora) In The Northwestern Red Sea
(
Qatar University
, 1996 , Article)
Studies on Acanthopleura gemmata population were carried out in a site located on northwestern coast of the Red Sea called Sharm Elnagha, 40 km south of Hurghada city, Egypt (26° 56' N and 43° 00' E). In these studies, the ...
Changes in some chemical constituents of stored grain and animal feed In two provinces in Saudi Arabia
(
Qatar University
, 1995 , Article)
Changes in total acidity, total carbohydrates, reducing sugars, starch, total protein, ether soluble fraction, sodium, potassium, calcium, magnesium, total phosphorus, ash, dry and wet gluten, crude fibres and specific ...
Parasites As Indicators Of Environmental Change And Pollution In Marine Ecosystems
(
Qatar University
, 1999 , Article)
Good biological indicators to monitor the effects of pollutants on marine organisms must be exceptionally sensitive to environmental change so that a significant reduction in their numbers can be used as a warning of ...
Scanning electron microscopy of hymenolepis nana and h. Diminuta from natural infections
(
Qatar University
, 1992 , Article)
The surface ultrastructure of two cestodes: Hymenolepis nana and H. diminuta was studied by scanning electron microscopy. The scolex, suckers, rostellum and strobila are all covered with dense populations of microtriches ...
Electron microscopic and autoradiographic analysis of the distribution of the vagus nerve in the ferret stomach
(
Qatar University
, 1999 , Article)
In this study, tritiated leucine was injected into the vagal dorsal motor nucleus after acute and chronic partial vagotomy. The method of sampling of the stomach, application of % 2 test and the analysis of the electron ...