ASA College

Renewable energy-based power conversion plays a crucial role in enabling sustainable irrigation systems, especially in rural areas. This work presents the design and implementation of a performance-enhanced SEPIC Converter integrated with an Incremental Conductance MPPT technique for photovoltaic (PV) powered irrigation applications. The SEPIC converter offers both buck and boost operation with a non-inverting output, making it well-suited for handling the fluctuating nature of PV input conditions. To improve reliability and ensure uninterrupted operation, a lithium-ion battery storage system is incorporated. Real-time voltage and current sensing are carried out using an Arduino Nano, enabling continuous monitoring and accurate power calculation. The MPPT algorithm is validated through MATLAB/Simulink simulation, while the hardware prototype demonstrates stable converter performance and smooth operation of a DC water pump. The experimental results confirm that the system achieves stable voltage regulation, efficient energy utilization, and reliable irrigation performance, making it a cost-effective and sustainable solution for solar-powered agricultural applications.

The production industry of rubber faces an immense change based on the growth of environmental control, resource limitation, and the need for sustainable material manufacturing. Conventional vulcanized rubber, despite being capable of being more mechanically strong and thermally stable, depends on permanently binding mechanisms, making it harder to recycle and raising the end-of-life environmental load. Conversely, Thermoplastic Elastomers (TPEs) have already appeared as promising alternatives because they can be melted down and have a stronger possibility to recover the materials. In this work, we can discuss a comparative evaluation of vulcanized rubber and thermoplastic elastomers, which are both sustainability-based approaches, and through the material processing pathways, the environmental impact, recyclability, and performance in the life cycle. The approach undertaken combines both a qualitative analysis of the polymerization and processing mechanisms, along with a comparative analysis of the manufacturing efficiency, energy usage, and waste control. A significant release is that vulcanized rubber offers long-term durability and high-performance attributes that can be applied in high-stress applications, but requires more processing energy and fewer reuses. Thermoplastic elastomers also have high processing efficiency, less manufacturing cycle time, and better recyclability, which makes them have a low environmental impact throughout their lifecycle. From a sustainability perspective, TPEs have benefits in closed-loop production and decreased waste of materials, and vulcanized rubber is important to use in cases that demand extreme mechanical performance. The research indicates the essential tradeoffs between performance and sustainability, as well as offers information that can be used as a guide in the selection of materials in the rubber manufacturing systems concerned with environmental concerns.

In this paper, we evaluate Fine type integrals of level 30. For an example, [Formula: see text] In the process, we discover certain new Eisenstein series identities of level 30.

Ensuring security in hostile and high-risk environments is a critical requirement in modern military operations. Traditional surveillance approaches often depend on human patrol teams or stationary monitoring equipment, which can expose personnel to dangerous conditions and limit the effectiveness of surveillance coverage. Advances in robotics, embedded electronics, and computer vision have enabled the development of intelligent robotic platforms capable of performing monitoring tasks remotely. This study presents the design and development of a mobile military surveillance robot integrated with image processing capabilities. The proposed robotic system is designed to perform real-time monitoring of sensitive areas, detect suspicious movements, and identify possible landmines in hazardous zones. A camera mounted on the robotic platform captures live video from the surrounding environment and transmits the data to a remote monitoring station using wireless communication. Image processing techniques are applied to analyze the captured video frames for detecting objects, movement patterns, and unusual activities. By integrating mobility, sensing technologies, and automated visual analysis, the system improves situational awareness in dangerous environments while minimizing the need for direct human involvement. The proposed solution offers an effective and reliable technological approach for surveillance tasks in modern defense applications.

This investigation reports the fabrication and comprehensive functional evaluation of a newly engineered hybrid nanocomposite composed of gallium nitride (GaN) integrated with a poly(3-methylthiophene)-co-poly(indole) (P3MTH–PID) copolymer, synthesized via a straightforward chemical oxidative polymerization route. GaN nanoparticles were prepared using a supercritical ammonia method and subsequently combined with P3MTH–PID nanofibers to form a uniform hybrid structure. Structural and surface analyses confirmed robust π–π stacking interactions between the GaN scaffold and the P3MTH–PID copolymer matrix, which facilitated efficient charge delocalization and ensured homogeneous nanofiber distribution across the GaN interface. The hybrid material exhibited remarkable electrocatalytic sensitivity toward albendazole (ABZ), as demonstrated by differential pulse voltammetry (DPV), achieving a detection limit (DL) of 1.372 × 10⁻⁸ M µA⁻¹ and a quantification limit (QL) of 4.352 × 10⁻⁸ M µA⁻¹. Furthermore, the hybrid displayed excellent photocatalytic performance, enabling complete discoloration of methylene blue (MB) within 30 minutes under UV–visible irradiation, with a kinetic rate constant of 78.66 × 10⁻² min⁻¹. Beyond sensing and photocatalysis, the GaN–P3MTH–PID hybrid also showed significant promise in energy storage applications. In a three-electrode configuration, it delivered a high specific capacitance of 294.25 F g⁻¹ at 1 A g⁻¹, while a symmetric supercapacitor device (2 × 2 cm²) assembled from the same material exhibited comparable capacitance and excellent long-term cycling stability. Collectively, these findings highlight that the GaN–P3MTH–PID hybrid integrates superior electrochemical, photocatalytic, and sensing functionalities with strong stability and biocompatibility, making it a highly versatile candidate for sustainable and multifunctional energy storage and environmental applications.