Browsing Academic by Title
Now showing items 3297-3316 of 27693
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Biostratigraphy Of The Subsurface Oligocene Sediments In The North Western Desert, Egypt
( Qatar University , 1984 , Article)This paper deals with the study of planktonic foraminifera, larger foraminifera and ostracoda in the Oligocene sediments in four wells: Abu Tunis No. IX, East Faghur-I, Khalda No. I and North Ghazalat No. I, North Western ... -
Biostratigraphy Of The Upper Cretaceous-Lower Tertiary Rocks Of South Jordan Based On Planktonic Foraminifera
( Qatar University , 1983 , Article)This paper deals with the Biostratigraphy of the Upper Cretaceous - Lower Tertiary rocks of Dm Rijam area. South Jordan. The study is based on 82 identified planktonic foraminiferal species. Ten foraminiferal biozones are ... -
Biosynthesis and characterization of graphene by using non-toxic reducing agent from Allium Cepa extract: Anti-bacterial properties
( Elsevier B.V. , 2019 , Article)Graphene based materials have attracted huge interest in recent years due to their outstanding properties and applications in various fields including bioengineering, electronics, nanotechnology, composite materials and ... -
Biosynthesis of alternan-stabilized selenium nanoparticles: A study on characterization and applications for antibacterial and antifungal purposes
( Taylor and Francis Ltd. , 2024 , Article)In this study, the alternan/selenium nanoparticles (Alt/SeNPs) were characterized with respect to their formation, morphology, size, selenium distribution, molecular, crystallographic, and thermal properties using UV-Vis ... -
Biosynthesis of Single Cell Protein (SCP) By Yeasts from Crude Chicken Waste
( Qatar University , 1993 , Article)Three strains of yeasts have been grown on media consisting of Chicken waste (CW) as a sole source of carbon and nitrogen in different concentrations. The nutrient medium which contains 2% CW extract was found to be the ... -
Biotechnological production process and life cycle assessment of graphene
( Hindawi , 2017 , Article)The aim of this study is to compare the graphene produced using a biotechnological method (Escherichia coli) with the graphene produced by Hummers' method (a chemical method) and to study the effect on the energy consumption ... -
Biotechnology content in pharmacy curricula: Focus on Arab Countries
( Elsevier , 2023 , Other)Introduction: Pharmaceutical biotechnology involves using the principles of biotechnology to develop drugs. With the rapid increase in biopharmaceutical products being developed and approved for use, educating pharmacy ... -
Biotechnology for gas-to-liquid (GTL)wastewater treatment: A review
( MDPI AG , 2020 , Article Review)Gas-to-liquid (GTL) technology involves the conversion of natural gas into several liquid hydrocarbon products. The Fischer-Tropsch (F-T) process is the most widely applied approach for GTL, and it is the main source of ... -
Biotransformation of carbon dioxide in bioelectrochemical systems: State of the art and future prospects
( Elsevier , 2017 , Article)Carbon dioxide (CO2) utilization/recycling for the production of chemicals and gaseous/liquid energy-carriers is a way to moderate the rising CO2 in the atmosphere. One of the possible solutions for the CO2 sequestration ... -
BIOTREATMENT OF GTL PROCESS WATER AND PESTICIDES CONTAMINATED WATER USING PSEUDOMONAS AERUGINOSA: A COMPARATIVE STUDY
(2023 , Master Thesis)Over 40% of the world's population suffers from water scarcity, a problem that is expected to get worse because of global warming and desertification. Therefore, the mean of treatment and reuse of wastewater has become ... -
Bird strike analysis on a typical helicopter windshield with different lay-ups
( Korean Society of Mechanical Engineers , 2014 , Article)In the current paper, bird strike to a typical helicopter windshield is investigated using smoothed particles hydrodynamic (SPH) finite element method. Five types of lay-ups in a windshield (single layer stretch acrylic, ... -
BIRD-VNE: Backtrack-avoidance virtual network embedding in polynomial time
( Institute of Electrical and Electronics Engineers Inc. , 2014 , Conference Paper)The virtual network embedding (VNE) problem is known to be NP-hard, and as a result, several heuristic approaches have been proposed to solve it. These heuristics find sub-optimal solutions in polynomial time, but have ... -
Birth and death of spiral waves in a network of Hindmarsh–Rose neurons with exponential magnetic flux and excitable media
( Elsevier Inc. , 2019 , Article)Spiral waves are spatiotemporal patterns, observed in complex networks of biological oscillators such as heart and brain. In this paper, at first a modified Hindmarsh–Rose model with external electromagnetic radiation and ... -
Bismuth perovskite as a viable alternative to Pb perovskite solar cells: device simulations to delineate critical efficiency dynamics
( Springer New York LLC , 2019 , Article)We have simulated the operation and functionality of a working Bi-based perovskite solar cell device using GPVDM and compared it against a Pb-based device. The results are extremely promising in that they showcase comparable ... -
Bite force changes after surgical correction of mandibular prognathism in subjects with increased vertical dimension: A prospective clinical trial
( Springer , 2021 , Article)Purpose: Occlusal bite force (OBF) is the most important parameter in assessing biting efficiency. The aim of this study was to record OBF changes after surgical correction of high angle maxillary/mandibular (Max/Mand) ... -
Bivalent mRNA-1273.214 vaccine effectiveness against SARS-CoV-2 omicron XBB* infections
(2023 , Article)In October of 2022, Qatar introduced COVID-19 bivalent vaccination for persons ≥ 12 years using the 50-μg mRNA-1273.214 vaccine combining SARS-CoV-2 ancestral and omicron BA.1 strains.1 We estimated this vaccine’s effectiveness ... -
Black cumin meal (Nigella sativa) as an alternative feed resource during the suckling period of Awassi ewes: Assessments of performance and health
( Elsevier , 2023 , Article)This study was designed to investigate the effectiveness of different Black cumin meal (BCM) dietary treatments during the suckling period on lactating performance and health of multiparous Awassi ewes. We randomly allocated ... -
Black garlic production: The influence of ageing temperature and duration on some physicochemical and antioxidant properties, and sugar content
( Wiley online library , 2023 , Article)Herein, some quality characteristics (water content, pH, antioxidant activity and sugar contents) of fresh garlic (Taşköprü, Türkiye) and black garlic, which were produced under various ageing temperatures (60 °C, 70 °C ... -
Bladder neoplasms and NF-κB: an unfathomed association.
( Taylor & Francis , 2020 , Article)Bladder cancer is the second most common genitourinary tract cancer and is often recurrent and/or chemoresistant after tumor resection. Cigarette smoking, exposure to aromatic amines, and chronic infection/inflammation are ... -
Blastema Volume And Nuclear Size In The Regenerating Hind Limbs In Larvae Of Xenopus Laevis And Bufo Regularis After Transection At The Ankle Level
( Qatar University , 1990 , Article)After amputation at the ankle level of hind limbs in larval Xenopus laevis and Bufo regularis, an increase in the nuclear volume of blastema and stump tissue cells was observed. The cells in the distal region of blastema ...