Qatar Foundation Annual Research Forum Volume 2010 Issue 1

Abstract This work presents a new fully-unstructured meshing scheme for generating simulation meshes, coupled with a novel simulation method for fluid flow models in porous media. We use unstructured tetrahedral meshing algorithms to generate meshes that rigorously adhere to structural and depositional heterogeneity in geological reservoir models at multiple scales. Geological heterogeneity is represented using numerou Read More

Abstract Liquefied natural gas (LNG) carriers have played, and will continue to play, a key role in ocean gas transportation with the increasing demand for energy. Safe operation of LNG carriers requires knowledge of global and local pressures imposed by the sloshing liquid. As LNG carriers are required to operate in different environmental condition, safety is the primary consideration in such operations. LNG carriers are su Read More

Abstract Stony corals are composed of limestone structures formed by the deposits of living organisms. These are tiny animals (polyps) that live in a symbiotic relation with algae. The algae produce the food energy needed by the polyps by photosynthesis. The coral is as such a colony. Numerous colonies on shallow waters where sunrays can reach them form a coral reef. Coral reefs can be extensive, such as the Great Read More

Abstract The results of a cockroach survey in the 14 sub-municipalities of Jeddah province revealed that a total of 3551 cockroaches were caught by 491 of 1433 traps (36.5%), from 128 of 168 houses (76.2%). Overall, relative density ranged from 8.1 (in Obhour sub-municipality) to 43.2 (in Alaziziah sub-municipality) with an average of 21.1 cockroaches per house. It has been noticed that the population density of the cockro Read More

Abstract There are two widely used process control techniques for the reduction of process output variability. The first technique is automatic process control (APC) that adjusts the process using information about its current level or deviation from a desired target. The APC actions for process adjustments are achieved by the minimum mean square estimate (MMSE) controller or proportional, integral and derivative (PI Read More

Abstract Facies tracts, sediment types, stacking patterns, and diagenetic histories of Holocene sabkhas of Qatar provide compelling analogues for the interpretation of ancient, carbonate-evaporite sequences of the Arabian Plate. The use of modern analogues to aid in the interpretation of geological and engineering data is well established in the petroleum industry. Comparison of sabkhas from different physiographic regio Read More

Abstract Biodiversity conservation attracts much attention all over the world, highlighted in 2010, the United Nation's International Year of Biodiversity. Effective biodiversity conservation needs basic biological and environmental information, including the behavior and ecology of organisms. The Ethiopian hedgehog (Paraechinus aethiopicus), which is well adapted to the desert environment, is a common species in Read More

Abstract Carbon monoxide (CO) and volatile organic compounds (VOC), such as butadiene and isoprene, are air pollutants emitted by many industrial sources, such as burning of wood and fuel with poor ventilation, and by natural sources including forest fires or volcanic eruptions. It was found that these compounds are also significantly abundant in many industrial processes. Therefore, low-temperature catalytic oxidatio Read More

Abstract Date palms are generally propagated by separating the offshoots produced by individual trees. This method maintains the genetic integrity of date palm cultivars. However, well known date palm cultivars that are grown in different environments show little differences in fruit morphology and quality such as color and sweetness. The objective of the present research project is to analyze the genetic diversity among most c Read More

Abstract Qatar's soil and environment are sources of beneficial bacterial strains and bacterial resources that should be first of all, identified, isolated, studied, used and valorized. In fact, the Qatari environment should be elective for many microbial genetic resources tolerant to high temperature, drought, salinity and hydrocarbon rich soil. Isolating microbial strains having biotechnological applications would be very b Read More