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CO <sub>2</sub> Fixation and Release Mediated by Carbonate-Based Coordination Polymers
Characterizations and molecular dynamic simulations of broad biologically active arylidene and Quinoxaline cellulose derivatives
Abstract In the current study, oxidized cellulose onto cellulose tricarboxylate (CTC) using 2,2,6,6 tetramethylpiperidine-1-oxyl (TEMPO) and periodate-chlorite oxidation. The ethyl-3-(4-chlorophenyl)-2-cyanoacrylate (W) and 2-chloro3-hydarzinoquinoxaline (R) were formulated into CTC and coded, CTC/W and CTC/R, respectively, that were utilized as ligands in the design synthesis of novel nanocomposites. The prepared nanocomposites were characterized using Fourier-transformed infrared spectroscopy (FTIR), scanning electron microscopy (SEM), and transmission electron microscopy (TEM). Molecular docking and Molecular dynamic (MD) simulations that supported the antimicrobial and cytotoxicity assays were carried out. Physicochemical analysis and topographic studies have affirmed the formulation of nanocomposites. The antimicrobial tests revealed a significant.CTC exhibited more potent activity than CTC/W, indicating its potential as an effective antimicrobial agent. The cytotoxicity test against BJ1 normal cells showed a low effect toward nanocomposites at a 100 µg/mL concentration. A molecular dynamics simulation study of the most active CTC/R and CTC/W was performed to calculate binding free energies using molecular mechanics-generalized born surface area (MM/GBSA). Furthermore, the computational studies revealed that CTC/W showed a high affinity toward the active site of E. coli beta-Ketoacyl-acyl carrier protein synthase III Ec FabH, which provides a strong platform for new structure-based design efforts.
Forecasting the daily evaporation by coupling the ensemble deep learning models with meta-heuristic algorithms and data pre-processing in dryland
Alkene-Activating Effect in Molybdenum-Catalyzed Asymmetric Hydrogenation of Arenes: Insights into Activity and Selectivity
Temporal fluctuation in lateral ventricle volume and its coupling with CSF inflow and global BOLD signal
Hydrophobic, Acid-Free Zeolite-Confined Pt–Cu Nanoalloys Break Activity–Selectivity Limits in Low-Temperature Methane-to-Methanol Oxidation
Physiological and biochemical alterations in soybean by banana peel biochar under different degrees of salt stress
Abstract Salt influences cellular membranes by the excessive production of reactive oxygen species, while osmolytes play a vital role in protecting plants from oxidative stress caused by salt. Biochar may alleviate the effects of salinity-induced stress on crops. The study investigated the impact of biochar supplementation on osmolyte modifications and antioxidant activity in soybean (Glycine max cv. AARI) under salt stress conditions. Soybean plants were exposed to 3 salinity levels (without salinity, 5, and 10 dSm− 1 NaCl), and different levels of biochar (without biochar, 12.5%, and 25% w/w). Root and shoot dry weight were reduced by 17% and 21%, respectively, under both salt-induced stress regimens. Salinity elevated the activities of superoxide dismutase (SOD), polyphenol oxidase (PPO), peroxidase (POD), ascorbate peroxidase (APX), and catalase (CAT) as well as O2•− (oxygen radicals), MDA (malondialdehyde), and H2O2 (hydrogen peroxide) levels by 3.1-fold, 1.8-fold, 3.1-fold, 2.8-fold, 4.4-fold, 1.4-fold, 2.2-fold, and 2.3-fold in plants relative to control group. Furthermore, higher concentrations of soluble protein, soluble carbohydrates, glycine betaine, and proline were more pronounced at 10 dSm− 1 than at 5 dSm− 1. In contrast, incorporating biochar into soil enhanced both root and shoots dry weight by 47% and 53% respectively, compared to the absence of biochar application. Furthermore, the antioxidant levels in soybean seedlings cultivated in soil treated with biochar, particularly at a concentration of 25% biochar, decreased. Adding biochar led to a notable decrease in H2O2 (27%), O2 •−(19%), and MDA (22%) concentrations, along with a reduction in the accumulation of osmotic substances in both roots and leaves. The findings demonstrate that the incorporation of biochar can safeguard soybean seedlings from NaCl-induced stress by alleviating oxidative damage.
Ultrasensitive Biosensing by a Plasmonic Nanolaser with a Record-Low Threshold at Room Temperature
Effect of mechanical stretching stimulation on maturation of human iPS cell-derived cardiomyocytes co-cultured with human gingival fibroblasts
Anionic Reversible Addition–Fragmentation Chain-Transfer Polymerization of Methacrylates
A cutting-edge ensemble model for enhanced underwater image restoration and quality improvement
Stable Metal–Organic Electrocatalysts for Anion-Exchange Membrane Water Electrolyzers by Defect Engineering
Environmentally sustainable epoxy nanocomposite coating reinforced with chitosan derived nitrogen doped graphene for enhanced corrosion resistance and mechanical performance
Abstract The current study evaluates the anticorrosive performance of Epoxy coating augmented with a distinctive, environmentally safe, nitrogen-doped graphene. A simple, green, and single-step cost-effective route for synthesis graphene nanosheets doped with nitrogen (Gr) has been developed using direct-solvothermal treatment of chitosan, under gentle conditions. XRD, FTIR, SEM, XPS and Raman spectroscopy were employed to characterize the microstructure characteristics of N-doped graphene. Well separated flatten morphology with folding characteristics and extremely extended considerable average lateral dimensions further than 1.27 mm was detected. Graphene was successfully integrated into epoxy coatings on carbon steel substrates with different tiny graphene concentrations < 0.04 wt%. The coatings’ corrosion resistance capabilities and accelerated durability tests were studied, including salt spray corrosion, bending, impact, adhesion, abrasion properties, wear resistance, and hardness. Comprehensive mechanical performance was investigated. Understanding the microstructural characteristics of Gr, the interface character of Gr/Epoxy coating composites with different Nanofiller loading and how these affect both the mechanism of the enhancement of corrosion protection process and their tensile behavior, were a focal point of interest. Remarkably, the coating with just 0.02 wt% Gr exhibited a 70% reduction in wear index compared to neat epoxy, along with significant enhancements in mechanical toughness showing a 573% increase in ultimate toughness and a 993% increase in toughness at fracture. These exceptional improvements are attributed to the strong interfacial bonding between Gr and the epoxy matrix, as well as the tortuous path created by the well-dispersed graphene sheets, which effectively dissipates energy during crack propagation. The findings reveal a pronounce toughening and strengthening effects for epoxy composites from nitrogen doped graphene reinforcement paving the way for “green” and mechanically superior structural composites.
Eyes on the Prize: Tracking Electron Transfer in G-Rich Duplex and Quadruplex DNA Using Enantiopure Ruthenium Polypyridyl Infrared Redox Probes
New reference values for ultrasound fetal biometry in Japanese population and comparison with other studies
Abstract Given the decline in birthweights over the past 30 years in Japan and advancements in ultrasound technology, this study aimed to establish new reference values for ultrasound fetal biometry in Japan and to compare them with international and Asian studies. We conducted a cross-sectional prospective study involving singleton pregnancies who received prenatal checkups at obstetric facilities across Japan. During routine prenatal care, ultrasound measurements—biparietal diameter (BPD), head circumference (HC), abdominal circumference (AC), and femur length (FL)—were recorded. Estimated fetal weight (EFW) was calculated using both the Shinozuka formula, commonly used in Japan, and the Hadlock-3 formula, widely used internationally. Using the collected data, we developed gestational-age-specific reference values for BPD, HC, AC, FL, and EFW by applying best-fitted fractional polynomial regression, and compared them with existing international standards and reference values from other Asian countries. The mean EFW calculated by the Hadlock formula in this study tended to be smaller than that reported in other international studies, and BPD, HC, AC, and FL were also generally smaller than those observed in other Asian references. These findings indicate that fetal biometry values in the Japanese population are smaller not only than international standards but also compared with those from other Asian countries, and suggest that these population-specific data may contribute to improving the accuracy of fetal growth assessment in Japan and other parts of Asia.