Browsing QU Ceased Journals by Title
Now showing items 156-175 of 2240
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A comparative study of the effects of clumping, substrate, light, depth of burial and soil moisture upon the germination of seeds of weeds and crops grown in the sudan gezira.
( Qatar University , 1985 , Article)The influence of the number of seeds per clump upon germination of oryza sativa L., Gossypium hirsutum L., Brachiaria eruciformis (Sm.) Griseb, Dinbera retroflexa (Vahl) Panz. and Echinochloa colonum (L.) Link was investigated ... -
A comparative study of the mechanical properties of low Density polyethylene (ldpe)
( Qatar University , 1997 , Article)Mechanical properties of engineering polymers which are the most important properties for design and construction purposes are diverse. This has been proved by investigation tensile properties of different grades of LDPE ... -
Comparing different methods for prediction of liquefied natural gas Densities
( Qatar University , 2005 , Article)The densities of several liquefied natural gas (LNG) mixtures and pure methane using different equations of state and correlations have been predicted and compared with the experimental values. The equations of state were ... -
Comparing The Elastic Constants Of Porous Titanium Compacts With Theoretically Predicted Values
( Qatar University , 1998 , Article)Some elastic properties of green and sintered titanium compacts were experimentally measured. The results were compared with the theoretical predictions based on Mackenzie's and Walton's models. It was concluded that the ... -
A Comparison Between Artificial Neural Network And A Geostatistical Technique In The Estimation Of Regionalized Variables
( Qatar University , 1999 , Article)In all mining estimation techniques data play a very important role. Insufficient data would mean the quality of the estimate is unreliable. Due to the importance attached to a good and representative data set, the application ... -
Comparison of antibiotic susceptibilities of four species of coagulase-negative staphylococci isolated rom normal skin and acne Lesions: a statistical approach
( Qatar University , 1996 , Article)Ten strains of each of four species of coagulase negative staphylococci: S. epidermidis, S. hominis, S. capitis, and S. cohnii isolated from both acne lesion and normal skin (total 80 strains) were tested for their antibiotic ... -
Comparison of body mass, feeding and food conversion of temperature acclimatized Porcellionides pruinosus (Brandt, 1833) (Isopoda, Oniscidea) fed on the dry leaf of Punica granatum
( Qatar University , 2006 , Article)A detailed study was conducted on the body mass; moisture; assimilation efficiency; gross and net production efficiencies; feeding, assimilation; conversion and metabolic rates of the woodlouse Porcellionides pruinosus ... -
Comparison of mechanical shaking, ultrasonication and Homogenization as techniques used in removing attached Bacteria and their effects on the associated protozoa
( Qatar University , 1994 , Article)During studying of Protozoa in the slow sand filter beds in Ashford Common Water Treatment Work (London, U.K.), it was found necessary to study the interstitial and attached bacterial populations involved with sand particles, ... -
Comparison Of Metal Corrosion Inhibition By Gravimetric And Linear Polarization Resistance Methods
( Qatar University , 1992 , Article)Studies were conducted to evaluate the effectiveness of various dosages of the selected silicate and phosphate compounds applied for corrosion inhibition of cast iron, copper, lead, and galvanized steel specimens. The ... -
Comparison of Recursive Parameter Identification Techniques for Computer Control of Power Systems
( Qatar University , 1988 , Article)This paper outlines the main features of parameter identification in electric power systems. A series of recursive parameter identification techniques is presented, this containing the generalized — and extended least ... -
Comparison of self-concept of socially disadvantaged orphans and its relationship to academic achievement
( Qatar University , 2000 , Article)The purpose of the study was to compare the self-concept and its relation to academic achievement in a sample of orphans across: grade level, gender, and type of social disadvantage (loss of father, loss of mother, loss ... -
Completeness Of Distributive P-Algebras
( Qatar University , 1988 , Article)According to the triple characterization of distributive p-algebras which is given by T. Katrinak, we characterize the completeness of distributive p-algebras. -
Complex Signs and Pseudo-composites
( Qatar University , 2001 , Article)The purpose of the present paper is to try to find an answer to the question: how are complex signs analyzed in English morphology in the context of Axiomatic Functionalist Theory? The paper provides the tools for analyzing ... -
The Complexation of Lanthanides by Azo-B-Diketones Stability Constants
( Qatar University , 1982 , Article)The stability constants of the complexes between the trivalent lanthanide series of cations and series of azo-B-diketone ligands are reported. The measurements were conducted at 30°C and zero ionic strength (free KN03), ... -
Compressive And Tensile Strength Of Concrete Loaded And Soaked In Crude Oil
( Qatar University , 2000 , Article)Effect of crude oil on compressive, splitting-tensile, and flexural-tensile strength of concrete under short-term and Lr.^-term loading, were investigated. Results show that the rate of crude oil absorption is high at early ... -
A Compressive Strength Criterion for Anisotropic Rock Materials
( Qatar University , 1988 , Article)This paper puts forward a general compressive strength criterion for anisotropic rock materials under multiaxial state of stress. The proposed criterion, is a generalization of the Von Mises yield criterion for ductile ... -
Computation Of Normal Depth In Open Channels
( Qatar University , 1998 , Article)Fixed-point iteration is an efficient technique for manual and machine calculation of normal depth. The method is applied to the solution of Manning's equation for two basic uniform flow problems in trapezoidal and circular ... -
A Computer - Aided Experimental Setup For Studying Sorption And Desorption Kinetics
( Qatar University , 1990 , Article)The details of a computer-aided experimental setup are reported in this communication. This set-up produces high-quality data which can be utilized in stuying sorption and desorption kinetics. -
Computer Aided Design Of Microstrip Taper Lines
( Qatar University , 1999 , Article)This work presents an accurate computer aided design (CAD) for niicrostrip taper lines in the microwave range of frequency. This CAD considers all design parameters affecting the characteristics of the line for different ... -
A Computer Aided Design Tool For Area Optimization Using Breadth First Search Technique
( Qatar University , 1991 , Article)Floorplanning is the process of partitioning an area on any surface such that the partitions guarantee minimum wasted area. The technique used to partition a given are depends on the requirements of the application. In an ...