Modification of Pd/CeO2 catalyst by Atomic Layer Deposition of ZrO2 by Onn, Tzia Ming

“…Methane-oxidation rates in 0.5% CH4 and 5% O2 were slightly lower on the ZrO2-covered catalyst when both materials were calcined at 673 K but the activity of the ZrO2-modified catalyst did not decrease with catalyst calcination temperature. …”
Get full text
Get full text

INVESTIGATION OF SPATIOTEMPORAL VARIABILITY AND CONTAMINATION OF PLASTIC MARINE DEBRIS IN QATAR’S COASTAL WATERS by Abayomi, Oyebamiji Abib

“…The pellets were analyzed for PCBs and PAHs and undeployed pellets were also analyzed at time 0. Adsorbed PCBs and PAHs concentration showed a steady decrease with time, suggesting that contaminated pellets ending in the marine environment release their adsorbed contaminants in less contaminated seawaters revealing a complex OPs dynamic between plastics an seawater as a function of differential concentrations of pollutants. …”
Get full text

Enhancement of mechanical and corrosion resistance properties of electrodeposited NiP-TiC composite coatings by Fayyaz O.

“…Vickers microhardness and nanoindentation results demonstrate the increase in the hardness with an increasing amount of TiC particles attaining its terminal value (593HV100) at the concentration of 1.5 g L−1. Further increase in the concentration of TiC particles results in a decrease in hardness, which can be ascribed to their accumulation in the Ni–P matrix. …”
Get full text
Get full text

Pd nanocrystals encapsulated in MOF-derived Ni/N-doped hollow carbon nanosheets for efficient thermal CO oxidation: unveiling the effect of porosity by Ipadeola, Adewale K.

“…The obtained Pd/Ni-MOF-HNC possesses hollow carbon sheets with a great surface area (153.05 m2 g−1), pore volume (0.12 cm3 g−1), rich Pd/Ni-Nx active sites, Ni-metal defects, rich N-content (7.53 at%), mixed Pd/Ni-oxide phases, and uniformly distributed ultra-small Pd nanocrystals (7.03 ± 1.10 nm); meanwhile, Pd/Ni-MOF-NC formed without etching had no porosity and less Ni-metal defects. …”
Get full text
Get full text
Get full text

DC conductivity and Seebeck coefficient of nonstoichiometric MgCuZn ferrites by Madhuri, W.

“…Nonstoichiometric series of Mg0.5-xCuxZn0.5Fe1.9O4-? where x = 0.0, 0.1, 0.15, 0.2 and 0.25 has been synthesized by conventional solid state reaction route. …”
Get full text
Get full text

The impact of intermittent fasting during Ramadan on psychomotor and cognitive skills in adolescent athletes by Bougrine, Houda

“…Methods: To achieve this purpose, a cohort of 23 female handball players, aged 17.2 ± 0.5 years, participated in a series of six testing sessions: one conducted prior to Ramadan (R0), and others during the first (R1), second (R2), third (R3), and fourth (R4) weeks of Ramadan, followed by a session in the week after Ramadan (R5). …”
Get full text
Get full text

Effects of soaking, acidity and temperature on cadmium and lead removal from rice by Al-Naimi M.

“…Different rice treatments were involved i.e. three soaking times (0, 15, and 30 min), three temperatures (20, 25, and 30 �C) and four concentrations of glacial acetic acid (0.5%, 1%, 2%, and 3%). …”
Get full text
Get full text
Get full text

Tobacco Use and Its Health Effects among Professional Athletes in Qatar by Chaabane, Zaina

“…The objective of the study was to determine the effects of tobacco use on selected markers of health and lung function in professional athletes. A total of 108 male professional athletes participated in the study from ten ball game teams in the same sport league in Qatar (age = 26.4 ± 5.1 yrs, height = 190.6 ± 11.9 cm, and weight = 91.5 ± 16.4 kg). …”
Get full text
Get full text

Structural, wear and thermal behaviour of Cu–Al2O3–graphite hybrid metal matrix composites by Mittal, P.

“…Copper matrix composites with Al2O3–graphite reinforcement (0.5-0.5, 1.0-1.0, 1.5-1.5 and 2.0-2.0 wt%) were prepared by stir casting process. …”
Get full text
Get full text

Investigation of Spatiotemporal Variability of Microplastics in Qatar's Cstal Environment by Ben-Hamadou, Radhouane

“…For each sampling, sediments from the top 2 cm were collected at the most recent high tidal mark on shore from a square area (0.5 0.5 m) along the shore line. …”
Get full text
Get full text

Effect of left atrial ligation-driven altered inflow hemodynamics on embryonic heart development: clues for prenatal progression of hypoplastic left heart syndrome. by Salman, Huseyin Enes

“…According to our CFD analysis, LAL results in an immediate decrease in the left AV canal WSS levels for 3.5-day (HH21) pre-septated hearts. …”
Get full text
Get full text

Pilot-scale petroleum refinery wastewaters treatment systems: performance and microbial communities' analysis by Karray, Fatma

“…Decreasing HRT to 5 and 2.5 days led to a decrease in the efficiency of the process and a decrease in biomass concentration was also observed (<1000 mg/l). …”
Get full text
Get full text

Climatology and variability of wind speeds along the southwest coast of India derived from Climate Forecast System Reanalysis winds by Abdulla, Cheriyeri Poyil

“…The study reveals significant decreasing trends in annual mean wind speeds, of the order of −2.0 to −2.5 cm·s−1·year−1, for the period 1979–2019. …”
Get full text
Get full text
Get full text

Enhancing the production of biogas through anaerobic co-digestion of agricultural waste and chemical pre-treatments by Almomani F.

“…The results revealed that the highest cumulative methane production (CMP) of 297.99 NL/kgVS can be generated by co-digestion of ASWs and CD at a ratio of 60:40. Further improvement was achieved via alkalinity treatment with 1.0 g of NaHCO3/gVS leading to decrease in lignin, cellulose, and hemicellulose contents of feedstock by 3.5%, 10.5% and 15.9%, respectively, converting them to soluble fractions and improving the CMP by 11.2–29.7% based on substrate quality. …”
Get full text
Get full text

Recycled Concrete Used in Subbase in Potential Use for Road Base and Cement Bounded Material (CBM) by Ahmad, Hassan Haidar

“…This paper will focus on the fine recycled concrete (FRC) 0-5 mm as a fine aggregate material in the mix design for constructing the base road layers under the Asphalt layers and how using crushed concrete can increase the quality and change the classification of the base aggregate mixes. …”
Get full text
Get full text

Inter-annual variability and distribution of aerosols during winters and aerosol optical thickness over Northeastern Pakistan by Shahid, M. Z.

“…ir pollution during winters over north-eastern (NE) Pakistan (71–74.5 E, 28–34 N) is a major challenge that affects human health, climate and daily life. …”
Get full text
Get full text

Heat stress impairs proprioception but not running mechanics by Mtibaa K.

“…Results Rectal (39.7 ± 0.4 vs. 39.4 ± 0.4 °C), skin (36.3 ± 1.1 vs. 31.8 ± 1.1 °C) and average body (38.3 ± 0.2 vs. 36.4 ± 0.4 °C) temperatures together with heart rate (178 ± 8 vs. 174 ± 6 bpm) and thermal discomfort (6.5 ± 0.5 vs. 4.3 ± 1.3) were all higher at the end of the HOT compared to COOL run (all p < 0.05). …”
Get full text
Get full text

Modelling the asymmetric responses of price level to oil price changes in Qatar by Mrabet, Zouhair

Get full text
Get full text

Enzymatic treatment of peanut butter to reduce the concentration of major peanut allergens by Yu, Jianmei

“…Treatment of peanut butter with a combination of trypsin and alpha-chymotrypsin resulted in a decrease in IgE-binding, suggesting that enzymatic treatment has the potential to reduce the allergenicity. …”
Get full text
Get full text

Could Vagus nerve stimulation influence bone remodeling? by Tamimi, Ahmad

“…The lumbar Z score also increased in these patients from -1.22±1.15 to -0.88±1.22, P=0.006). Pre and Post VNA femoral BMD was measured in only 11 patients and, of those 3 showed a significant increase in BMD, 1 a significant decrease and 7 no change. …”
Get full text
Get full text