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This research aims to design three educational programmes based on blended learning delivery to students attending the "introduction to educational technology" course. Each programme differs in its blending proportion between traditional and e-learning. The objective is to determine the most suitable blending ratio between the two delivery formats for this course, and compare the effectiveness of the three blending levels to the traditional instruction in terms of developing students' academic achievement and their attitudes towards using blended learning at the College of Education, Sultan Qaboos University. The results show a statistically significant difference at the level of <0.05 between the mean scores of all the experimental groups and the three control groups in the post academic achievement test, in favour of the experimental groups. The research recommends using a blended learning strategy with all blending ratios in teaching and developing different learning variables, such as understanding and thinking.

Background Polytrauma from road accidents is a common cause of hospital admissions and deaths, frequently leading to acute kidney injury (AKI) and impacting patient outcomes. Methods This retrospective, single-center study included polytrauma victims with an Injury Severity Score (ISS) >25 at a tertiary healthcare center in Dubai. Results The incidence of AKI in polytrauma victims is 30.5%, associated with higher Carlson comorbidity index (P=0.021) and ISS (P=0.001). Logistic regression shows a significant relationship between ISS and AKI (odds ratio [OR], 1.191; 95% confidence interval [CI], 1.150–1.233; P

Upper extremity deep venous thrombosis (UEDVT) is uncommon but may complicate intracerebral hemorrhage (ICH). A unique challenge arises when UEDVT is diagnosed and treated in situations of ICH. Case Report: We report a 43-year-old man developed edema in his hemiplegic arm 7 days after a spontaneous ICH. UEDVT was detected immediately despite pharmacotherapy with point-of-care compression ultrasound (POCUS). In addition to controlling thrombogenic factors, the dosage of enoxaparin was increased, yet it was subtherapeutic. Following this, the thrombosed veins recanalized and the hematoma diminished as well. Conclusion: A POCUS scan helps diagnose UEDVT, and the risk and benefits of treating UEDVT should be considered in patients with ICH.

The influence of the Nd:YAG laser's oscillation energy on creating textured surfaces on silicon wafers is investigated in this study. The silicon wafer surfaces were directly ablated by a pulsed Nd:YAG laser beam to create the texturing, which was then examined using UV–Vis spectroscopy, AFM and FESEM to determine its characteristics. The reflectance was reduced up to 15% after laser texturing of multicrystalline silicon wafers. The silicon surface suffers from structural defects and a laser damage layer as a result of the laser texturing process, which in turn has an effect on the lifespan of the photo-generated carriers. To compensate for the laser damage layer, the silicon surface was cleaned with diluted KOH (15%) to remove undesirable particles and the oxide layer. Surface roughness and reflectance in silicon solar cells were changed depending on the laser oscillation energy utilized for texturing. The roughness and reflectance were measured using AFM and UV–Vis, respectively. The laser oscillation energy of 84 J/p had the highest average roughness of 0.2104 m and the lowest reflectance of 5%. As a result, standard silicon solar cell devices revealed photovoltaic conversion efficiencies of roughly 7.5% and 5.0% for laser-textured grid and one-dimensional line patterns, respectively.

Currently, halide perovskites with exceptional properties are the most suitable candidates for RRAM devices. In the present study, a comprehensive investigation of structural, mechanical, optoelectronic and thermoelectric properties of Cs2BSnX6 (B = Mg, Cu; X = Cl, Br, I) has been conducted for the potential application in resistive switching random access memory (RRAM) devices. Mechanical properties display that studied perovskites exhibit mechanical stability and ductile behavior with an anisotropic character. A comparison of band structure using PBE-GGA, and TB-mBJ was also made. The band structure with TB-mBJ investigation disclosed that Cs2MgSnCl6, Cs2MgSnBr6, Cs2MgSnI6, Cs2CuSnCl6, Cs2CuSnBr6, and Cs2CuSnI6 have indirect bandgaps with value of 3.64 eV, 2.87 eV, 2.05 eV, 2.30 eV, 1.50 eV and 0.90 eV respectively. These values are found to be slightly more than PBE-GGA approximations. The optical investigation illustrates that Cs2CuSnI6 can absorb a wide range of electromagnetic radiation wavelengths from ultraviolet to infrared, making it the optimal candidate for RRAM devices. Thermoelectric properties show electrical conductivity values of the 1.65 × 1019, 1.61 × 1019, 1.58 × 1019, 1.95 × 1019, 2.35 × 1019, 2.40 × 1019 (Ω.m.s)−1 for Cs2MgSnCl6, Cs2MgSnBr6, Cs2MgSnI6, Cs2CuSnCl6, Cs2CuSnBr6, and Cs2CuSnI6 respectively at 1500 K. Furthermore, the calculated optical and thermoelectric properties of Cs2BSnX6 (B = Mg, Cu; X = Cl, Br, I) compared with previously studied Cs2CaSnX6 (X = Cl, Br, I), disclosing that Mg and Cu-based perovskites display better optical and thermoelectric properties. The vital findings of this study express that Cs2CuSnI6 is the most appropriate candidate for less-energy consuming RRAM devices among all studied perovskites. [ABSTRACT FROM AUTHOR]