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Geomorphological changes in the coastal area of Farasan Al-Kabir Island (Saudi Arabia) since mid Holocene based on a multi-proxy approach
منشور في 2018"…The mid Holocene evolution of the borehole area is resulted from the detailed analysis of five sedimentary units detected along the core Matar-1, and includes three distinct stages: (a) from 5253 ± 223 y cal BP to 3138 ± 223 y cal BP, carbonate coarse-grained material consisting of coral fragments, molluscs, calcareous algae and benthic foraminifera are deposited on a shallow marine fringing reefal platform, which becomes progressively a nearshore backreef (around 3675 ± 215 y cal BP), and later (around 3138 ± 223 y cal BP) a reef ramp; (b) since 3040 ± 220 y cal BP the borehole area obtains the characteristics of a high-energy beach that receives increasing inputs of terrigenous material; (c) subsequently, a supratidal backshore setting is established influenced mostly by terrestrial processes and occasionally by marine processes, as it is indicated by the decreasing and sometimes sporadic presence of benthic foraminifera, and recently, a sedimentary veneer consisting of terrigenous, carbonate and evaporite material is formed by terrestrial, mainly wadi and aeolian, processes. © 2018 Elsevier Ltd and INQUA…"
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Crumpled MXene nanosheets for sensing of ascorbic acid in food, biological fluids, and erythrocytes in-vitro microenvironment
منشور في 2023"…The sensor also demonstrated excellent reproducibility (~1 % RSD for five repetitive assays) and a shelf life of nearly one month with a negligible decrease in response. …"
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A 28 nm CMOS 10 bit 100 MS/s Asynchronous SAR ADC with Low-Power Switching Procedure and Timing-Protection Scheme
منشور في 2021"…The power consumption is 1.1 mW with a supply voltage of 0.9 V, leading to a figure of merit (FoM) of 35.6 fJ/conversion-step.…"
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Two-stage optimisation for malachite green removal using activated date pits
منشور في 2022"…The best fit for the experimental data for both treated and natural date stone was the Langmuir–Freundlich isotherm. The surface areas and maximum malachite green adsorption capacities of the natural date stone and the phosphoric acid–treated date stone were 86 and 909 m2/g, respectively, and maximum malachite green adsorption capacities were 31.5 and 64.7 mg/g, respectively. …"
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Impact of aluminium acetate particles size on the gelation kinetics of polyacrylamide‐based gels: Rheological and molecular simulation study
منشور في 2023"…Therefore, lower PAM concentrations (up to 5 wt.%) could be used without AlAc settling. Using 7 wt.% PAM/1 wt.% AlAc with sizes of 25 and 48 μm revealed a crosslinking time of 17 and 115 min, respectively. …"
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Investigation of the Sustainable Production and Utilization of Biochar and Activated Carbon From Waste
منشور في 2023"…Out of the activated biochars tested, those produced without catalyst at 600 °C using either 2M KOH or 2% H<sub>3</sub>PO<sub>4</sub> at a ratio of 1:1 of SCG were found to be the most efficient adsorbents with a BET surface area greater than 340 m<sup>2</sup> .g<sup>-1</sup>, zeta potential of more than -75 mV and fixed carbon of 65%. …"
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Synthesis of lithium manganese oxide nanocomposites using microwave‐assisted chemical precipitation technique and their performance evaluation in lithium‐ion batteries
منشور في 2023"…The LMO-CNTs and LMO-GNPs have an excellent rate capability of 124 and 127 mAhg<sup>−1</sup> at 0.1C, sustained at 115.6 and 118.5 mAhg<sup>−1</sup> at 10C, respectively. …"
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Microwave-Assisted Solvothermal Synthesis of Mo-Doped TiO<sub>2</sub> with Exceptional Textural Properties and Superior Adsorption Kinetics
منشور في 2022"…Furthermore, Mo-TiO<sub>2</sub> revealed mesoporous architectures with a high surface area ranging between 170 and 260 m<sup>2</sup> g<sup>−1</sup>, which is superior compared to previously reported Mo-doped TiO<sub>2</sub>. …"
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