Model Based Systems Engineering (MBSE) methodologies are the concepts and processes used to manage the entire systems engineering lifecycle with models as the prime way of supporting the various activities of systems engineering, moving away from the document-centric systems engineering paradigm to an integrated, digital, and collaborative systems engineering paradigm. The complexity of contemporary engineered systems, such as aerospace platforms, automotive systems, healthcare technologies, defense applications, industrial automation, cyber-physical systems and smart infrastructure, has created a cross-multidisciplinary need for systems in which engineering requirements and interactions are constantly changing and complex, which has given rise to MBSE. MBSE aims to formalize models that portray system structure, behavior, requirements, interfaces, constraints, and performance to advance the understanding of a system, the communication of intent to stakeholders.
Recently, fusion of coumarin frameworks with diverse aromatic units has emerged as a powerful strategy for constructing multifunctional luminogens. Herein, we report design and development of 7-diethylamino-4-hydroxycoumarin based four unsymmetrical azine derivatives (FHC, BHC, HBHC and TPHC) via systematic alteration of freely rotatable aromatic moieties, which were fully characterized using standard spectroscopic techniques. All compounds exhibit pronounced solvatochromic effect which displaying distinct fluorescence colours across solvents of varying polarity under UV irradiation (365 nm). Proton transfer phenomenon of all the compounds was investigated by absorption, emission in conjunction with DFT and TD-DFT calculations. The AIE behaviour of the compounds clearly established by UV-visible absorption, PL, DLS and FE-SEM analysis. Proper engineering of other part of azine derivative enables effective tuning of multi-color emission in CH3CN-Water mixtures. Fascinatingly, FHC demonstrates a distinct mechanofluorochromic response, showing reversible emission changes upon mechanical grinding of pristine and crystalline samples, as corroborated by solid-state emission measurements, powder X-ray diffraction and FE-SEM studies. This work highlights an effective molecular design strategy for developing multi-color, stimuli-responsive coumarin-based luminogens.
Borates were highly structured and diversed semiconducting materials having the wide band gap typically employed in optical property and distinct crystal structure offered vital research value for extending the range of applications. The current era of advancement in technological field have made more important than rationally build and discovered the novel borates with superior performance required to satisfy the impending technological milestones because of diverse and intricate architectures. Here, the research progress on efficient transitional metal borates and borate-based composites in photocatalysis has summarized. Additionally, the photocatalytic performance of transition metal borates in energy and environmental applications including water splitting, dechlorination of chlorophenols, degradation of pollutants, dyes, sensors and transition metals doped bioactive borate glasses (BBG). Generally, transitional borate materials have structural complex to reach technological benchmark to overcome these transition metals employed in the borate system. The present article reviewed the future direction of transition metal borates in versatile applications like environmental, energy and biomedical fields.
This study investigated the synergistic effects of plant growth-promoting rhizobacteria (PGPR) and bone-derived biochar amendments for chromium (Cr) remediation in contaminated soils from the heavily polluted Noyyal River sediments, India. Two bacterial strains, Rosellomorea vietnamensis and Bacillus siamensis, were isolated and characterized for their PGPR activities. Goat bone biochar was produced through pyrolysis at 350 °C and applied in combination with bacterial inoculants to Cr-contaminated soil in pot experiments using pearl millet. The combined treatments of biochar along with PGPR significantly enhanced soil chemical properties such as pH, electrical conductivity (EC), dissolved organic carbon (DOC), and soil organic carbon (SOC) compared to the control condition. Plant growth parameters significantly improved with the combined treatment of biochar and PGPR. Antioxidant enzyme activities were substantially enhanced, with peroxidase increasing by 66.7
Doping serves as a versatile strategy to modify the chemical, physical, electrical, and optical characteristics of materials, making them highly suitable for energy storage applications. This work investigates the enhancement of electrochemical performance in hausmannite Mn3O4 nanoparticles (NPs) through doping with cerium (Ce) ions. Ce-doped Mn3O4 NPs were synthesized using a non-thermal microplasma discharge technique applied to a precursor solution containing KMnO4 and Ce(NO3)(3) & centerdot; 6H(2)O. The solution underwent air microplasma treatment for 30 mins at a discharge power of 40 W, achieving effective doping over the range of 0.5%-3.0%. Electrochemical testing performed in a standard three electrode configuration within a 1 M KCl electrolyte revealed notable improvements in energy storage performance. Specifically, 2% Ce doping resulted in a maximum specific capacitance of 234 Fg(-1) at 0.5 Ag-1. This enhancement is linked to Ce induced modifications in lattice structure and particle morphology, which favour pseudocapacitive behaviour and facilitate charge transfer. Moreover, the doped NPs showed excellent cyclic stability, retaining 86% of their capacitance and achieving 90% Coulombic efficiency after 5000 cycles at 4 Ag-1. These results demonstrate that Ce doped Mn3O4 NPs are promising pseudocapacitive materials for advanced supercapacitor applications.
