-
21
Environment Degradation and Economic Growth in the Qatar Economy: Evidence from a Markov Switching Equilibrium Correction Model
منشور في 2016"…From the economic perspective, this means that initially economic growth increases environment degradation and then declines it after a threshold point of income per capita. …"
احصل على النص الكامل
احصل على النص الكامل
-
22
-
23
Correlation of structural and mechanical properties for Al-Al2O3-SiC hybrid metal matrix composites
منشور في 2021"…Al-Al2O3-SiC hybrid composite has been developed through stir casting with addition of ceramics i.e. Al2O3-SiC (2.5 wt.%, 5.0 wt.%, 7.5 wt.% and 10.0 wt.%) in relative and symmetrical proportion. …"
احصل على النص الكامل
احصل على النص الكامل
-
24
Date palm wood flour/glass fibre reinforced hybrid composites of recycled polypropylene: Mechanical and thermal properties
منشور في 2012"…Morphological studies indicated that glass fiber has good adhesion with recycled PP supporting the improvement of the mechanical properties of hybrid composites with glass fiber addition. Addition of as little 5wt% glass fibre to wood flour reinforced RPP increases the tensile strength by about 18% relative to the wood flour reinforcement alone. …"
احصل على النص الكامل
احصل على النص الكامل
احصل على النص الكامل
-
25
The Structure of the Free Volume in Poly(styrene-co-acrylonitrile) from Positron Lifetime and Pressure Volume Temperature (PVT) Experiments
منشور في 2004"…The mean hole volume, vh, varies in PS between 105 Å3 (27 °C) and 220 Å3 (190 °C), and shows a systematic decrease with increasing AN content, at Tg from 121 Å3 for PS to 102 (±2) Å3 for SAN50. …"
احصل على النص الكامل
احصل على النص الكامل
-
26
Optimization of performance and emission characteristics of CI engine fueled with Jatropha biodiesel produced using a heterogeneous catalyst (CaO)
منشور في 2020"…The heterogeneous transesterification delivered a yield of 81.6% at 5 wt% catalyst concentration and 12:1 methanol to oil molar ratio. …"
احصل على النص الكامل
احصل على النص الكامل
-
27
-
28
-
29
Turning point in COVID-19 severity and fatality during the pandemic: a national cohort study in Qatar
منشور في 2023"…Incidence rate for severe, critical or fatal COVID-19 throughout the pandemic was 1.43 (95% CI 1.35 to 1.50) per 1000 person years. In the pre-omicron phase, first omicron wave, and combined phases, it was 2.01 (95% CI 1.90 to 2.13), 3.70 (95% CI 3.25 to 4.22) and 2.18 (95% CI 2.07 to 2.30) per 1000 person years, respectively. …"
احصل على النص الكامل
احصل على النص الكامل
-
30
Synthesis and characterisation of Co2+-incorporated ZnO nanoparticles prepared through a sol-gel method
منشور في 2016"…The band gap of the Co2+-doped ZnO samples decreased from 3.19 to 2.66 eV as the content of dopant Co2+ increased from 0.0 to 1.0 wt.%. …"
احصل على النص الكامل
احصل على النص الكامل
-
31
-
32
Effects of superelastic nano-NiTi additions on electroless Ni –P coating properties under bending
منشور في 2019"…In this study, electroless Ni –P-nano-NiTi composite coatings containing 5.14 wt%, 6.07 wt%, and 7.02 wt % NiTi were subjected to three-point bend testing in order to determine bending properties. …"
احصل على النص الكامل
احصل على النص الكامل
-
33
-
34
Morphology, nucleation, and isothermal crystallization kinetics of poly(butylene succinate) mixed with a polycarbonate/MWCNTs masterbatch
منشور في 2018"…Isothermal crystallization results indicated that with 0.5 wt% MWCNTs the crystallization rate was accelerated, but further increases in MWCNTs loading (and also in PC content) resulted in progressive decreases in crystallization rate. …"
احصل على النص الكامل
احصل على النص الكامل
-
35
Prospects Of Amino Acids And Ionic Liquids As Natural Gas Hydrate Inhibitors For Offshore Flow Assurance
منشور في 2018"…This work is beneficial for the industry and academic researchers as the required dosage of hydrate inhibitors has been reduced from 40 wt% to 5 wt%, which helps to reduce the overall CAPEX cost and reduce environmental concerns related to the disposal of the hydrate inhibitors. …"
احصل على النص الكامل
-
36
Synthesizing New Anodes From Qatalum's 1st Cut Spl
منشور في 2014"…This might result in extending the life time of the carbon anodes and decrease the number of carbon dioxide kilograms that are released per a ton of produced Al metal. …"
احصل على النص الكامل
احصل على النص الكامل
-
37
Enhanced quality factor of polyvinyl formal (PVF) based nanocomposites filled with zinc oxide and carbon black nanoparticles for wireless sensing applications
منشور في 2019"…The incorporation of ZnO at 10% decreases Q-factor to 36.1. Incorporation of CBNP at 5% and ZnO at 5% further reduces the Q-factor to 13.7. …"
احصل على النص الكامل
احصل على النص الكامل
-
38
Synthesis and properties of HA/ZnO/CNT nanocomposite
منشور في 2018"…The goal of this study was to examine the tribomechanical properties of hydroxyapatite (HA)/ZnO and HA/ZnO/CNT composite ceramics (carbon nanotubes; with different ratios 0.5 wt%, 1.0 wt%, and 1.5 wt%). The composites were synthesized using the hydrothermal method in an autoclave. …"
احصل على النص الكامل
احصل على النص الكامل
-
39
-
40
Effect of concentration of DOC loaded TiO 2 nanotubes on the corrosion behavior of smart coatings
منشور في 2019"…Various contents of the encapsulated TiO2 nanotubes (1, 3 and 5 wt%) were thoroughly dispersed into the epoxy matrix and the resulting composites were then applied on a cleaned steel substrate using doctor blade technique to develop smart coatings. …"
احصل على النص الكامل
احصل على النص الكامل
