Influence of shelf-life duration on mechanical, thermal and shape recovery motion derivatives of shape memory polyurethane by Vasavi, Boggarapu

“…The present research, therefore explores the effect of shelf life on mechanical, thermal and shape recovery performance of polyurethane (PU) based shape memory polymer (SMP). Experimental samples S1, S3, S5 and S10 were prepared from polymer pellets that were stored for 1,3,5 and 10-year time duration respectively. …”
Get full text
Get full text
Get full text

Understanding the False Positive of Modified Martensitic Steels in Sweet & Sour Service Conditions Using a Point Defect Model Perspective by Martinez, Alan

“…Electrochemical tests were performed using a 1L autoclave holding 35 bar of CO2 gas with and without H2S at temperatures varied from 25 °C to 150 °C in salt brine solutions with a pH of 3.5. …”
Get full text

Corrosion inhibition of Mild Steel at Elevated temperature in highly Acidic Brines using a green corrosion inhibitor by Elhaddad, Muhsen A.M.

“…Corrosion Inhibition of mild steel in 5 M Hydrochloric acid solution at different temperatures was investigated using a new green corrosion inhibitor (lauramidopropylamine oxide). …”
Get full text

Short-term greenhouse emission lowering effect of biochars from solid organic municipal wastes by Rehrah D.

“…Two biochars produced from mixed materials at 300–500 °C for 2 h and used at 0.5–1% application rate performed the best in enhancing soil fertility parameters. …”
Get full text
Get full text

Trends in prevalence of depression and anxiety symptoms and effects of sociodemographic variables before and after the first wave of COVID-19 in Qatar by Khaled, Salma M.

“…Results The two-week prevalence of depressive symptoms (≥10 on the PHQ-9) was 6.6% in 2017 and 6.5% in 2020/2021 (p = 0.986). The two-week prevalence of anxiety symptoms (≥10 on the GAD-7) was 3.6% in 2018 and 5.1% in 2020/2021 (p = 0.062). …”
Get full text
Get full text

Enhanced quality factor of polyvinyl formal (PVF) based nanocomposites filled with zinc oxide and carbon black nanoparticles for wireless sensing applications by Mohanapriya, M.K.

“…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. …”
Get full text
Get full text

Improvement of both lipid and biomass productivities of Qatar Chlorocystis isolate for biodiesel production and food security by Saadaoui, Imen

“…Indeed, culturing QUCCCM14 using f/2 medium with 10× NaH2PO4 (0.15 g L−1 NaNO3 and 5.6 mg L−1 NaH2PO4) resulted in an improvement of 3.178 folds the lipid productivity reaching 56.121 mg L−1 day−1 and enhanced the biomass productivity reaching 141.363 mg L−1 day−1, simultaneously. …”
Get full text
Get full text

Fabrication and characterization of flexible ruthenium oxide-loaded polyaniline/poly(vinyl alcohol) nanofibers by Chamakh, M.

“…The tests revealed the decrease of electrical resistivity and activation energy with increasing RuO2 concentration for the as-prepared samples, while the annealed samples showed lower activation energy values of ~0.1 eV with increasing the concentration of RuO2. …”
Get full text
Get full text
Get full text

Calmodulin Mutations Associated with Congenital Cardiac Disease Display Novel Biophysical and Biochemical Characteristics by Nomikos, Michail

“…In contrast, in the presence of Ca2+, there was a significant decrease in the stability of the five proteins following the order CaMWT> CaMN98I > CaMD132E > CaMQ136P > CaMD134H. …”
Get full text
Get full text

Recycled Polypropylene Fibres for Reinforcing Cement Mortar under Arid Conditions by Bendjillali, Khadra

Get full text
Get full text

Association Between Serum Bicarbonate Levels and Prediabetes and Subclinical Inflammation in Young Healthy Adults: A Cross-sectional Study by Omar, Abeer A.

“…Prediabetes was defined using HbA1c between 5.7 and 6.4% and subclinical inflammation was defined using monocyte to high density lipoprotein (HDL) cholesterol ratio (MHR). …”
Get full text
Get full text
Get full text

Novel fluorinated surfactants for enhanced oil recovery in carbonate reservoirs by Al-Amodi, Adel O.

“…An adsorption isotherm showed that the maximum adsorption of surfactant‐A was 1 mg per g of rock. Core flooding experiments showed 42 % additional oil recovery using 2.5 g/L (2500 ppm) HPAM and 0.001 g/g (0.1 mass%) amphoteric surfactant at 90 °C.…”
Get full text
Get full text

Mechanical and microstructure characterization of hard nanostructured N-bearing thin coating by Cabibbo, M.

“…The coatings were subjected to two different thermal cycling tests: one for 100 thermal cycles consisting of 60 s dwelling time, respectively at the high- (573 to 1173 K) and at the room-temperature, a second for 100 thermal cycles consisting of 115s dwelling time, at same temperatures of the first test, followed by 5s dwelling at room-temperature. …”
Get full text

The Effects of Class IV Hemorrhagic Hypotensive Shock and Its Resuscitation with Fluids and Adjuvant Vasopressors or Cellular Energy Replenishment on the Splanchnic Microcirculatio... by Zakaria, El Rasheid

“…This was followed by phase-2 of uncontrolled hemorrhage as induced by transection of the splenic parenchyma at the two ends of the organ and severing one of the branches of the splenic artery. The transected organ was returned to the abdominal cavity for free arterial and venous bleeding until class IV hemorrhage is achieved [defined by persistent mean arterial pressure, MAP < 40 mmHg, and a shock index (ratio of heart rate and systolic arterial pressure), SI ≥ 5 for successive 10 minutes during the period of active uncontrolled bleeding]. …”
Get full text
Get full text

Growth and protein content of wheat kernels treated with three Growth regulators by Abo Hamed, S. A.

Get full text

Estimating the production and mortality of fine roots using minirhizotrons in a Pinus densiflora forest in Gwangneung, Korea by Han, Seung Hyun

“…The annual FP and FM values at the 0–30 cm soil depth were 3200.2 and 2271.5 kg ha−1 yr −1, respectively. The FP estimate accounted for approximately 17 % of the total net primary production at the study site. …”
Get full text
Get full text

Modeling of dual-metal Schottky contacts based silicon micro and nano wire solar cells by Rabbani, M. Golam

Get full text
Get full text

Impact of the COVID-19 lockdown on lifestyle behaviors and their association with personality among adults in Qatar: A cross-sectional study by Al-Abdi, Tamara

“…The overall MD adherence decreased during lockdown (5.9 vs. 6.1, p < 0.001). …”
Get full text
Get full text

Tobacco control in the Eastern Mediterranean region: implementation progress and persisting challenges by Abu-Rmeileh, Niveen M E

“…Tobacco use is the leading cause of preventable mortality worldwide, projected to claim 1 billion lives in the twenty-first century.1 Tobacco prevalence rates are expected to decrease across all the WHO regions by 2025 as a result of tobacco control efforts. …”
Get full text
Get full text

Impact of pharmacist-involved collaborative care on diabetes management in a primary healthcare setting using real-world data by Abdulrhim, Sara

“…Results After 17 months of follow-up, pharmacist-involved collaborative care compared to usual care resulted in a significant decrease in HbA1c (6.8 ± 1.2% vs. 7.1 ± 1.3%, p < 0.01). …”
Get full text
Get full text