Browsing QU Ceased Journals by Title
Now showing items 941-960 of 2240
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A Short Note On The Point-Wise Summability Of The Conjugate Series Of A Fourier Series In The Norlund Sense
( Qatar University , 1985 , Article)In this note we consider an analogous theorem of [l] in the sense of point-wise summability of the conjugate series of a Fourier series in the Norlund sense -
Signal Identification Using A Microprocessor Based Phase Locked Loop System
( Qatar University , 1989 , Article)A scheme for waveform comparison and the measurement of periodic signal parameters through processing, controlling and measuring programs is realised. A microcomputer is used with a phase locked loop voltage controlled ... -
The Significance Of Permeability And Wettability Contrasts On Near Wellbore Flow Patterns Creating Formation Damage Effects
( Qatar University , 1999 , Article)The majority of hydrocarbon reservoirs are heterogeneous and any geological model that is unable to represent these heterogeneities will not capture the correct displacement physics. In particular, difficulties are encountered ... -
A Simple Diagram For Gravity Interpretation By Gradients For A Lateral Varying Formation
( Qatar University , 1984 , Article)A simple diagram is constructed for the interpretation of the gravity anomaly arising from a formation of linear density variation. The diagram can be easily used if the horizontal gradient is also known. With the help of ... -
Simplified Method For Plate Deflection Calculation
( Qatar University , 1997 , Article)This paper presents a simplified method for the calculation of thin-plate deflections. The method, which deals with uniformly loaded plates, uses the stiffness method to obtain plate deflection equations for specified ... -
Simulation of Cross-Current Extraction Processes
( Qatar University , 1988 , Article)Extraction processes dealing with partially miscible solvents are usually calculated by graphical methods to estimate the number of stages required, flow rates and compositions of the streams. Such procedures may be lengthy. ... -
Simulation Of Three-Phase Distillation Column Using Bubble Point And Φ-Φ Approach
( Qatar University , 1995 , Article)Most of organic compounds are partially miscible in water and due to their solubility criteria split into two liquid phases. So design of equipments that separate two liquid phase systems differ from one liquid phase system ... -
Single Cell Protein Production From Beet Pulp By Mixed Culture
( Qatar University , 1992 , Article)A mixed culture of Trichoderma reeseiand Kluyveromyces marxianuswas found to be more efficient for single cell protein (SCP) production (51%) from beet pulp (BP) than the other tested mixed cultures containing T. reeseior ... -
Social Change - it's problems and rewards
( Qatar University , 1981 , Article) -
Software For On-Line Monitoring Of E10-B Telephone Exchange
( Qatar University , 1991 , Article)The proposed software aims at enhancing the monitoring of the E10-B telephone exchange. It combines functions normally performed by two dedicated hardware devices and facilitates access to detailed maintenance information ... -
Soil Classification Decision Support System Using An Expert System Approach
( Qatar University , 1998 , Article)Soil classification systems are necessary for the identification of soil properties. Expert systems can be a very powerful tool in identifying soils quickly and accurately. In this paper, an interactive and user-friendly ... -
SOIL FUNGI ARE AN ACTIVE PARTNER OF OUR ECOSYSTEM. THEIR BIODIVERSITY AND ACTIVITIES SHOULD BE APPRECIATED*
( Qatar University , 1995 , Article)Soil fungi play an active role in the maintenance and functioning of ecosystems around man. This paper is an appreciation of their bio¬diversity and activities at the global and Arab world levels. Microorganisms merit ... -
A Solar Pond For Air Conditioning A Small Family House In Qatar
( Qatar University , 1992 , Article)The concept of using a solar pond to provide air conditioning for a typical small family Qatari house is developed. Though the idea seems appealing for a number of reasons, the design study shows it to he technically ... -
Solar Water Pumping — An Analytical Overview
( Qatar University , 1988 , Article)Two basic thermodynamic conversion techniques of solar water pumping are recognized. In the first technique, a high internal energy fluid heated in a solar collector is used to power a conventional heat engine which drives ... -
Solid-State Ac-Conductivity Analysis For The Long Debated Catalytic Activity Of The Boralite Sieve
( Qatar University , 1996 , Article)The ac-phase dependent impedance, capacitance and dielectric loss of boralite are measured and correlated with those of a similar history HZSM-5 as a function of frequency (0.1-100 kHz) and temperature (373-638 K) at 0.8 ... -
Solidification Of Steel Billets In Continuous Casting
( Qatar University , 1991 , Article)For practical operation, it is necessary to know how the solidification of liquid steel progresses i.e. when and where a strand has completely solidified. Decisions on, the casting speed, the spray water flow rates and ... -
Solubility and Tie Line Data for The System Sea Water - Xylene - n - Butanol
( Qatar University , 1989 , Article)Ternary equilibrium data for the system Sea Water - Xylene-n-Butanol were determined at 23°C. The maximum solubility of n-Butanol in sea water was found to be 4.763% at room temperature. Xylene was found to be practically ... -
Solutional Landforms of Gabal Al-Qaraha, the Oasis of Al-Hasa, Saudi Arabia
( Qatar University , 1981 , Article)Jabal Al-Qarah is one of the small outlier hills at the Oasis of Al-Hasa, lying at about lOkm ENE of Al-Hafuf Town. The solutional forms of Al-Qarah hill discussed in this paper are as follows : 1. A calcareous duricrust ... -
Solvent Effects Of The Oxidation Of Iron (II) - Tartrate Complex By Molecular Oxygen In Aqueous Solutions Of Alcohols
( Qatar University , 1985 , Article)The solvent effects on the oxidation of Fe(II)-tartrate by molecular oxygen have been investigated in aqueous acidic solutions of alcohols such as methanol, ethanol, isopropanol and t-butanol. The second-order rate constant ... -
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, ...