Octopus: privacy preserving peer-to-peer transactions system with InterPlanetary file system (IPFS)

International Journal of Information Security - Blockchain-based decentralized infrastructure is intended to achieve peer-to-peer transactions without relying on centralized/trusted third parties....     

Maximum power point tracking controller implementation in multiple input converter for effective solar energy harvesting using maximum power point resistance method

Solar energy is widely acknowledged as one of the most promising renewable energy sources for addressing future electrical energy demands. Photovoltaic modules (PVms) convert solar energy into electrical energy and are highly sensitive to nonlinear changes in environmental circumstances, which in turn affect the generation of electricity from the PVms. The module-level maximum power point tracking (MPPT) of PVms using multiple input converters (MICs) is the effective and cost-efficient method among all the methodologies and techniques. MICs, on the other hand, suffer from a cross power-sharing difficulty due to their modular design, which implies that the individual cells that make up the device impact on each other's power-sharing operation. The solution to which have been ignored in the literature. The objective of this paper is to employ the maximum power point resistance (MPPR) approach to determine an appropriate duty ratio range for the proposed MIC while taking into consideration the cross effect of different cells. Steady-state, power loss, and efficiency analysis of the proposed MIC structure with less component count have been included. The proposed approach has been validated experimentally and further, a comparative analysis with recently reported various approaches has also been included to prove the suitability of the proposed approach.     

Assessment of Si–O Equilibria and Nonmetallic Inclusion Characteristics in High Silicon Steels

Si–O deoxidation equilibria in liquid steel are not reliably known, especially in the high silicon concentration range. Herein, Si–O deoxidation equilibria in liquid steel at 1823–1873 K have been investigated for a wide range of silicon concentrations. Thermodynamic analysis was carried out using Wagner's interaction parameter formalism (WIPF) and FactSage 8.1. The first and second-order cross-interaction parameters estimated at 1873 K are as follows: $e_{\mathrm{O}}^{\text{Si}}=-0.086$, $e_{\text{Si}}^{\mathrm{O}}=-0.154$, $r_{\mathrm{O}}^{\text{Si}}=-0.0016$. Moreover, nonmetallic inclusion characteristics were also investigated for varying silicon concentrations.     

Effect of 1-D silver grated electrode on wafer‐based TOPCon c-Si solar cell

Silicon - A modified structure of Anti reflection coating (ARC) less wafer based 200 μm thick c-Si Solar cell with tunnel oxide passivated contact (TOPCon) solar cell is proposed with...     

High-Throughput Screening Assisted Discovery of a Stable Layered Anti-Ferromagnetic Semiconductor: CdFeP2Se6

Recent advances in 2D magnetism have heightened interest in layered magnetic materials due to their potential for spintronics. In particular, layered semiconducting antiferromagnets exhibit intriguing low-dimensional semiconducting behavior with both charge and spin as carrier controls. However, synthesis of these compounds is challenging and remains rare. Here, first-principles based high-throughput search is conducted to screen potentially stable mixed metal phosphorous trichalcogenides (MM^′P₂X₆, where M and M^′ are transition metals and X is a chalcogenide) that have a wide range of tunable bandgaps and interesting magnetic properties. Among the potential candidates, a stable semiconducting layered magnetic material, CdFeP₂Se₆, that exhibits a short-range antiferromagnetic order at T_N = 21 K with an indirect bandgap of 2.23 eV is successfully synthesized . This work suggests that high-throughput screening assisted synthesis can be an effective method for layered magnetic materials discovery.     

Preclinical study probing primary stability of dental implants in synthetic and natural bones

The natural bone is a biological example of a polymer–ceramic composite with a higher volume fraction of nanosized ceramic (around 65% hydroxyapatite) dispersed in polymer (collagenous) matrix. The loading of a dental implant involves the biomechanical interactions of the implant with such natural composites in the jaw bones of human subjects. In particular, the insertion torque responses of the dental implant are related to the implant design, in particular the external thread morphology, which influences the primary stability of the implant. In this study, the effect of the bone properties (polyurethane-based synthetic bone, porcine and human cadaver lumbar bone) and clinically relevant implant driving protocols on the insertion and removal torques of newly designed implant variants (hybrid threads with macro- and micro-threads) were assessed, quantitatively and qualitatively. It was observed that torque response increased with an increase in bone density, irrespective of the implant designs. The torque response of the implants in both synthetic and natural bones was benchmarked with the commercially available implant. The implants with bone cutting partial macro-threads at the apical end without inter thread gap exhibited comparable clinically relevant results with respect to control implants and were found to be most suitable for implantation into natural bone.