Browsing Qatar University Institutional Repository by Publisher "Elsevier, Ltd"
Now showing items 1-20 of 32
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Anisotropy in CNT composite fabricated by combining directional freezing and gamma irradiation of acrylic acid
( Elsevier, Ltd , 2016 , Article)A novel fabrication process for composite consisting of organized modified carbon nanotubes (CNT) in the polyacrylic acid (PAA) matrix has been developed. The CNT were organized along crystallite domains during a directional ... -
Axial crushing behavior and energy absorption efficiency of corrugated tubes
( Elsevier, Ltd , 2014 , Technical Report)This paper presents the effect of corrugations on the crushing behavior, energy absorption, and failure mode of circular aluminum tubes. Experimental investigations were carried out on five geometrical types of corrugated ... -
Characterization of untreated and treated male and female date palm leaves
( Elsevier, Ltd , 2013 , Technical Report)This paper describes the characterization of male and female date palm leaves from two different cultivars, Sheshi female and unknown male leaves. Characterization was done for both untreated and NaOH treated date palm ... -
Crushing behavior of hybrid hexagonal/octagonal cellular composite system: All made of carbon fiber reinforced epoxy
( Elsevier, Ltd , 2014 , Article)Cellular carbon fiber-reinforced plastic (CFRP) composites, either unfilled or filled with foam, may be of interest for energy absorption application due to their improved crashworthiness. In the current paper, new ... -
Crushing behavior of hybrid hexagonal/octagonal cellular composite system: Aramid/carbon hybrid composite
( Elsevier, Ltd , 2014 , Article)In the current paper a series of experiments were conducted to assess the crashworthiness of cellular hexagonal/octagonal composite device. Each device composed of 6 cells of carbon fiber reinforced composite (CFRP). ... -
Date palm wood flour/glass fibre reinforced hybrid composites of recycled polypropylene: Mechanical and thermal properties
( Elsevier, Ltd , 2012 , Article)Recycled polypropylene (RPP) based hybrid composites of date palm wood flour/glass fibre were prepared by different weight ratios of the two reinforcements. Mixing process was carried out in an extruder and samples were ... -
Differentiating the mechanical response of hierarchical magnesium nano-composites as a function of temperature
( Elsevier, Ltd , 2012 , Article)The effect of temperature change on quasi-static mechanical response of monolithic Mg alongside hierarchical Mg/Al–Al2O3 nano-composites synthesized through powder metallurgy route followed by microwave assisted rapid ... -
Durable immunity to oncogenic human papillomaviruses elicited by adjuvanted recombinant Adeno-associated virus-like particle immunogen displaying L2 17–36 epitopes
( Elsevier, Ltd , 2015 , Article)Vaccination with the minor capsid protein L2, notably the 17–36 neutralizing epitope, induces broadly protective antibodies, although the neutralizing titers attained in serum are substantially lower than for the licensed ... -
The effect of a patient centred care bundle intervention on pressure ulcer incidence (INTACT): A cluster randomised trial
( Elsevier, Ltd , 2016 , Article)Background Hospital-acquired pressure ulcers are a serious patient safety concern, associated with poor patient outcomes and high healthcare costs. They are also viewed as an indicator of nursing care quality. Objective ... -
Effect of chain structure on the properties of Glass fibre/polyethylene composites
( Elsevier, Ltd , 2013 , Article)Three types of polyethylenes (low density: LDPE, medium density: MDPE, and high density: HDPE) were used to investigate the effect of chain branching on the dispersion and adhesion in Glass fibre reinforced polymer composites. ... -
The effect of fiber orientation on the energy absorption capability of axially crushed composite tubes
( Elsevier, Ltd , 2014 , Technical Report)An experimental investigation to optimize the absorbed energy of axially crushed composite collapsible tubular energy absorber devices was carried out. Different fiber orientation were used in this study (0/90, 15/−75, ... -
The effect of triiodothyronine on maturation and differentiation of oligodendrocyte progenitor cells during remyelination following induced demyelination in male albino rat
( Elsevier, Ltd , 2016 , Article)Demyelination was induced by two weeks cuprizone treatment. Rats of +ve control and triiodothyronine (T3) then received three subcutaneous injections of either saline or T3 day after day and sacrificed at the end of the ... -
Effects of current generation and electrolyte pH on reverse salt flux across thin film composite membrane in osmotic microbial fuel cells
( Elsevier, Ltd , 2016 , Article)Osmotic microbial fuel cells (OsMFCs) take advantages of synergy between forward osmosis (FO) and microbial fuel cells (MFCs) to accomplish wastewater treatment, current generation, and high-quality water extraction. As ... -
Energy absorption capability of composite hexagonal ring systems
( Elsevier, Ltd , 2012 , Article)An extensive experimental investigation of inplane crushing of composite hexagonal ring system between platens has been carried out. Woven roving glass/epoxy hexagonal ring system with different angles and arrangement were ... -
Enhanced simulated-annealing-based algorithms and their applications to process planning in reconfigurable manufacturing systems
( Elsevier, Ltd , 2012 , Article)Capabilities of enhanced simulated-annealing-based algorithms in solving process planning problems in reconfigurable manufacturing are investigated. The algorithms are enhanced by combining variants of the simulated annealing ... -
An experimental investigation into mechanical behavior of hybrid and nonhybrid composite semi-elliptical springs
( Elsevier, Ltd , 2013 , Article)This study introduces a new composite semi-elliptical suspension spring by utilizing fiber reinforced composite strength in principal direction instead of shear direction. Three types of composites were tested, namely, ... -
Health in times of uncertainty in the eastern Mediterranean region, 1990–2013: a systematic analysis for the Global Burden of Disease Study 2013
( Elsevier, Ltd , 2016 , Article)Background: The eastern Mediterranean region is comprised of 22 countries: Afghanistan, Bahrain, Djibouti, Egypt, Iran, Iraq, Jordan, Kuwait, Lebanon, Libya, Morocco, Oman, Pakistan, Palestine, Qatar, Saudi Arabia, Somalia, ... -
Health-related quality of life as a predictor of tuberculosis treatment outcomes in Iraq
( Elsevier, Ltd , 2015 , Article)Summary ObjectivesTo determine how tuberculosis (TB) treatment affects the health-related quality of life (HRQL) of patients with pulmonary TB and to identify the predictors of favourable TB treatment outcomes in Baghdad, ... -
HIV-related sexual risk behaviors among university students in Northern Nigeria
( Elsevier, Ltd , 2014 , Poster)Human immunodeficiency virus (HIV) constitutes an important health challenge for young adults worldwide as a result of high prevalence of risk behaviors. Universities in Sub- Saharan Africa including Nigeria are faced ... -
Improved mechanical properties of recycled linear low-density polyethylene composites filled with date palm wood powder
( Elsevier, Ltd , 2014 , Article)Recycled linear low-density polyethylene (RLLDPE) was blended with date palm wood powder to prepare composites in which the concentration of the filler ranged from 10 to 70wt.%. The cross-linking of composites was performed ...
