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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 ...
Some Adsorption Characteristics of Sodium decyl and dodecyl Sulphates on the surface of Emulsifier-free Polymer Latex Particles
(
Qatar University
, 1997 , Article)
The adsorption characteristics of sodium decyl and dodecyl sulphates on polystyrene latex particles have been investigated.
The study involves the addition of known amounts of the surfactant to an emulsifier-free latex, ...
Studies On Catch Rates Of Bottom Trawlers In Qatar Waters, Arabian Gulf
(
Qatar University
, 1990 , Article)
Data pertaining to catch, effort, time, space, landing, commercial value, by-catch and some environmental parameters covering the period from 1983 to 1988 were used in this regard. The results conformed that; the CPUE ...
Modelling and simulation of flexible assembly systems A petri net approach
(
Qatar University
, 1995 , Article)
This paper presents an approach towards constructing a class of Placc/TYansition nets for modelling, simulation and control of processes occurring in the Flexible Assembly Systems. Its objective lies in the formal statement ...
Heat Storage In The Eastern Mediterranean
(
Qatar University
, 1993 , Article)
Results of the monthly climatological fields of heat storage for the Eastern Mediterranean are presented. The zonal annual trend of monthly mean heat storage in the Levantine, Aegean and Ionian Seas are shown as well as ...
Heavy minerals and provenance of the paleozoic suffi formation, Western desert, iraq.
(
Qatar University
, 1996 , Article)
Heavy minerals analyses were carried out on 10 samples from the clastic Suffi Formation (the Ordovician-Carboniferous unit in the western Iraqi desert). The suite of minerals consists mainly of opaque minerals including ...
Mullet culture in qatar: effects of replacing fish meal With soybean meal on growth rates and feed utilization efficiency of liza macrolepis (pisces: mugilidae)
(
Qatar University
, 1994 , Article)
The effects of replacing fish meal (FM) with soybean meal (SBM) in practical diets fed to fingerling mullet, Liza macrolepis, on the growth rates, feed utilization and body composition were investigated. Five isocaloric ...
Sponges in Qatari waters A new source of marine natural products for biological applications
(
Qatar University
, 1999 , Article)
Sponges are the most primitive multicellular organisms belonging to Animalia kingdom. They lack symetry and do not have differentiated tissues or organs. However, as a consequence of this primitive organization it is very ...
Adenylate Energy Charge As A Tool For Evaluating Sub-Lethal Toxicity
(
Qatar University
, 1999 , Article)
Adenylate energy charge (AEC) is directly related to the cellular concentrations of the three adenylates nucleotides ATP, ADP and AMP. This biochemical index reaches high values (0.9) under optimal conditions but drops ...
Crystal hydration and vacancy enhanced isotopic exchange reactions in Heterogeneous solid - liquid systems
(
Qatar University
, 1994 , Article)
The rate of some heterogeneous isotopic exchange reactions can be enhanced by the simultaneous hydration of the solid participating in the exchange process. The results presented here show that the concomitant hydration ...