Pandit Deendayal Petroleum University

The biofuels are advanced sources of renewable energy extracted from biological materials like organic waste, plants, agricultural residues etc. In parallel, the decomposition of microorganisms with nanomaterial has emerged as a prominent bio-inspired mechanism, improving the energy conversion, transport phenomenon and sustainability in advanced energy systems. This analysis presents the applications of bioconvection in flow of viscoelastic micropolar nanofluid in presence of thermo-diffusion phenomenon. The transport of viscoelastic micropolar fluid is induces by stretching surface. The assessment of mass transfer is supported with chemical reactive species. Insight of thermal problem is further examined with Dufour, Soret and convective boundary conditions. A famous analytical technique namely homotopy analysis method (HAM) is used as solution methodology to tackle the governing equations. The results are physically interpreted due to specific flow parameters. It has been observed that microrotation velocity enhances for viscoelastic fluid parameter. The heat transfer increase for Dufour number while declining effects are observed for micropolar fluid parameter. Furthermore, the concentration profile enhances for Soret number. The proposed outcomes provide significance applications in biofuels processing, fertilizes, enzymes etc.

The paper examines the impact of the US-China trade war on China’s energy transition and its clean energy goals, employing a mixed-methods approach. It suggests that the trade war has acted as a catalyst for China’s clean energy initiatives, with China implementing measures such as market diversification and the dual circulation strategy to counteract the tariff war. Overreliance on China for critical clean energy components presents considerable risks to global supply chains.

Global energy consumption continues to rise, while fossil fuels remain the dominant primary energy source, posing significant environmental challenges. Hydrogen (H2) energy represents a sustainable alternative to meet future energy demands. In this study, a CuO–NiO bimetallic oxide catalyst supported on activated carbon (CNAC) with a spongy, foam-like morphology was synthesized by the solution combustion synthesis (SCS) approach and applied for hydrogen generation via NaBH4 hydrolysis. The designed catalysts were thoroughly characterized using FESEM, EDX, XRD, XPS, TEM, SAED, and FTIR analyses. The characterization results effectively revealed inherent properties of synthesized catalysts. The synthesized bimetallic catalyst of CuO–NiO/AC (CNAC) exhibited outstanding catalytic activity for the H2 generation by achieving a low activation energy of 9.93 kJ/mol. At 80 °C, a hydrogen generation rate of 969 mL/g/min was obtained, producing a total of 2225 mL of hydrogen within 100 min. The hydrogen generation rate was significantly influenced by catalyst dosage, reaction time, temperature, and NaBH4 concentration. Notably, the CNAC catalyst demonstrated excellent recyclability over ten consecutive cycles with negligible performance degradation under optimized parameters. A comprehensive correlation between the catalysts’ chemical and physical properties and catalytic activity results was established. These results indicate that the CNAC catalyst is a promising, sustainable, and environmentally friendly material for H2 generation via NaBH4 hydrolysis, with potential applications in hydrogen fuel cells, energy storage, and clean energy production.

Two-dimensional (2D) materials with engineered heterojunctions offer exciting opportunities for next-generation optoelectronic devices. However, achieving high-speed and ambient-stable photodetectors remains challenging. Here, we report a novel heterostructure photodetector based on p-type Ti3C2 MXene decorated on vertically aligned n-type SnS2 nanosheets grown via chemical vapor deposition. This Ti3C2/SnS2 hybrid structure forms a nanoscale p-n junction network with built-in electric fields that significantly enhance photocarrier separation and suppress recombination. The resulting device operates without gate bias and demonstrates a responsivity of 1.34 A W-1, a detectivity of 9.91 x 1011 Jones, and an ultrafast response time of 0.15 ms under visible light illumination. Electrochemical impedance analysis confirms efficient interfacial charge transfer, while the device maintains stable operation over 300 cycles and even after prolonged ambient exposure, highlighting excellent environmental robustness. Comparative analysis with the existing TMD and MXene-based photodetectors establishes the superiority of our approach in simultaneously achieving high speed, sensitivity, and stability. This work offers a scalable platform for developing high-performance 2D material heterojunction devices and sets a new benchmark for MXene-integrated optoelectronics.

Background Career decision-making in collectivist societies often occurs within strong family influence, yet limited research has examined whether the type of parental involvement has lasting implications for adult career satisfaction, particularly in high-investment professions such as medicine. Purpose This study investigates whether autonomy-supportive and directive parental involvement during career decision-making differentially predict long-term career satisfaction among physicians in India. Methods A cross-sectional survey was conducted among 100 practicing physicians in Ahmedabad, India (final N = 98 after data screening). Participants reported retrospective parental involvement and current career satisfaction. Hierarchical regression analyses and bias-corrected bootstrapped mediation (5,000 resamples) were used to test direct and indirect effects while controlling for age and gender. Key Findings Autonomy-supportive parental involvement significantly predicted higher career satisfaction (β = 0.291, 95% CI [0.079, 0.503], p = 0.008), whereas directive involvement was not significant (β = −0.061, 95% CI [−0.214, 0.092], p = 0.432). Career–values alignment partially mediated the relationship (indirect effect = 0.220, 95% CI [0.031, 0.425]). Implications Findings suggest that autonomy-supportive family environments foster long-term vocational well-being even in collectivist contexts where parental authority is normative. The results inform family-inclusive career counseling and value-alignment interventions in culturally interdependent societies.