Dr. ASHWINI KUMAR

This study investigates a novel methodology to intricately craft a HAMMC and thoroughly examine its multifaceted mechanical and tribological characteristics. By combining silicon carbide (SiC) and fly ash as reinforcements, a unique identity is bestowed upon this hybrid composite, enhancing its structural integrity and functional attributes. Stir casting is the chosen methodology for fabricating this composite, favored for its economic viability and suitability for large-scale manufacturing. In this research, the emphasis is on developing a cost-effective composite that not only meets stringent economic considerations but also exhibits improved material properties. Within the realm of hybrid metal matrix composites, the well-regarded Al6061 takes on the role of the matrix material, while the synergistic inclusion of fly ash and SiC serves as reinforcing constituents. Three specimens with compostion 90% Al6061 + 5% SiC +5% Fly ash, 90% Al6061 + 10% SiC +6% Fly ash and 90% Al6061 + 15% SiC +7% Fly ash were fabricated. To unravel the intricacies of the fabricated Al6061 metal matrix composite, comprehensive tests are employed. These tests, including the Pin-on Disc test, Scratch test, Rockwell Hardness test, and Charpy Impact test, collectively work to unveil the nuanced tribological and mechanical behaviors encapsulated within this innovative alloy. The results indicated significant improvement in wear resistance in specimen comprising 78% Al6061 + 15% SiC +7% Fly Ash and volumetric loss found to have 0.96 g. Superior hardness characteristics and enhanced abrasion resistance found in 78% Al6061 + 15% SiC +7% Fly Ash than other two specimens. The highest impact strength exhibited in 90% Al 6,061 + 5% SiC +5% Fly ash specimen.

The Lean Green approach stands as a beacon in the realm of environmental sustainability and waste reduction within production processes. In a concerted effort to delve into the dynamics of its implementation, a comprehensive study was undertaken within the manufacturing landscape of India. This study sought to elucidate the impediments hindering the seamless integration of the Lean Green paradigm. Employing a rigorous methodology, a widespread questionnaire survey was conducted across numerous companies to meticulously gauge and rank the assorted barriers encountered. The analytical framework of this investigation was structured around a three-tier hierarchy diagram, meticulously designed to accommodate the complexities inherent in the Analytical Hierarchy Process (AHP), a widely acclaimed Multi-Criteria Decision Making (MCDM) technique. Through this systematic approach, insights were gleaned to discern the pivotal barriers that impede the adoption of Lean Green practices. The findings underscored a paramount revelation: the imperative role of employee motivation in driving Lean Green initiatives forward. It emerged as the linchpin, with its absence signifying the most formidable barrier to effective implementation. Within the gamut of barriers delineated through the survey, lack of motivation surfaced as the most salient, exerting a disproportionately significant influence on performance interruptions. Indeed, the barriers identified through this exhaustive survey collectively accounted for a substantial 64.26% of performance interruption, indicative of their profound impact on operational efficacy. Thus, the study not only sheds light on the challenges besetting the Lean Green journey but also underscores the critical importance of addressing motivational factors to surmount these hurdles and propel sustainable manufacturing practices into fruition.

Solar photovoltaic is one of the commonly renewable energy sources using in Ethiopia according to its geographical conditions and availability of ample solar insolation. Solar Photovoltaic (PV) systems have been shown to significantly reduce greenhouse gas emissions and environmental devastation caused by the use of nonrenewable energy sources. Nigist Eleni Mohammed Memorial Referral Hospital, which was used as a case study in this study, is also dealing with these issues of disparity and undependable electrical power supply. As a result, the purpose of this research paper was to carefully analyze how a hybrid combination of solar photovoltaic (PV) and other energy sources can be used to increase the reliability of the existing power supply in Hadiya Zone health centers. This study takes an exploratory case study approach by using a qualitative data collection and analysis method. The data collection methods include measurement, participatory observation, interviews, and documentation. The empirical findings were analyzed and used to calculate the required solar PV components that can be integrated into the existing power system. The results reveal that solar PV with a backup system connected to the power grid and a diesel generator is viable, and it gives solutions to Nigest Eleni Mohammed Memorial Referral Hospital's (NEMMRH) energy security issues. Across all sites studied, the PV/diesel/battery system is the most economically feasible, with a net present cost of $50,748 and a renewable percentage (RF) of 60%. The HOMER software was used for optimization and cost-effective analysis.

Abiotic stresses are a significant risk to agricultural productivity. Some of these stresses viz., crop salt tolerance and heavy metal stresses have been reduced by the use of polyamines (PA). Polyamines are small aliphatic polycations, ubiquitously present in all organisms generally exhibiting their role in a wide range of biological processes. Cadaverine (Cad), a structurally different diamine as that of putrescine and having an independent biosynthetic pathway concerning different polyamines is viewed as a growth regulator and follows a similar method of action. There are studies that have shown the mitigation of stresses in various crops like brassica, bermudagrass, and leguminous plants by Cad. However, a significant study of Cad on tomatoes has not been reported. Therefore, the effect of Cad on tomatoes (Lycopersicon esculentum) to mitigate abiotic stress was studied in the present investigations. To assess the functions in multiple stress responses, the effects of exogenous Cad were analyzed in tomato plants and several physiological and molecular studies were conducted. Signature proteins involved in biological and biochemical processes were identified. During cell rescue and defense mechanisms, protein expressions involved were studied. Taken together, these experiments delivered a fine understanding of Cadinduced multiple stress resistance by proteomic methods providing a practical perception for improvising multiple stress tolerance in the global epoch.

Tubular structures are the base of rational design with the improvement in high-performance and advanced structural applications. One of the biggest challenges of these parts is their complex/superior architectural geometry, therefore, knowledge is required to understand the features of each joint. In recent times, conventional metal tubular joints are replacing with fiber reinforced polymer (FRP) tubular joints in various applications, such as aerospace, automotive, civil construction, etc. This is due to lightweight and excellent corrosion resistance of FRP tubular joints compared to conventional metal tubular joints. In this review, the use of different types of tubular joints (T, L, X, and K-joints) and their failure mechanisms are discussed in detail. Further, the role of FRP composites in joining the tubular sections and reducing their weight is discussed. In addition, some specific failure modes (chord shear failure, local buckling, brace failure, etc.) for various types of tubular joints are given in detail. At the end of this review, several practical applications based on the classifications of tubular joint structures are reviewed. This review may provide several ideas and new directions to researchers for extending their skills in the field of composites to design innovative structural members in aerospace and automotive fields and architectural buildings, etc.

The age of urbanization has brought exponential growth in population and development along with the huge amount of waste generation. The waste generated is a mixed type of waste that is difficult to manage using conventional methods and is ever-increasing and changing in nature, blocking essential space that has become an expensive commodity in today's world. Conventional techniques such as combustion, landfilling incineration, gasification have been the conventionally preferred method of waste management. The work also does an assessment of various traditional wastes to energy (WtE) procedures, starting from basic aspects of the process, performance, environmental assessment parameters to an alternate WtE. In view of large size high installation and maintenance costs, mini size waste treatment technology can make it financially viable and more effective. This work discusses the current technology limitations and how the concept of a mini waste treatment unit will be more technical feasibility to the practical reality of waste management. This will assess the socio-aspect of such mini waste treatment energy reactors as a more sustainable waste management system.

With the better really well worth of energy of radiation on shield plate of solar orientated air radiators and compelling warm temperature expulsion from the plate via way of means of the transporter liquid, air improves heat execution of solar primarily based totally air warmers. The modern paintings manage the exploratory final results to enhance the pressure of radiation thru promoter mirrors go over wires as a faux unpleasantness at the wind move aspect of the shield plate. Warmth flow estimations had been led for a totally advanced violent move in a square plate with its base divider aimlessly holed with roundabout math. The take a look at plate changed into deliberate with its base divider changed into fabricated from a square GI plate of duration 736 mm, expansiveness a hundred and ten mm and width130 mm. Tests had been carried out depending on numerous calculations. It changed into tracked down that the improvement in warmth flow changed into performed in a square plate with slanted roughened on the bottom floor of plate. Slanted roughened at the decrease a part of the GI plate improve the convective warm temperature flow tempo of the air shifting thru it. An improvement with inside the radiation of approximately 30% has been located over the everyday episode radiation thru supporter mirrors prompting a 9% to 17% better tempo of heat assortment. A few take a look at and mathematical examinations, with numerous roughened calculations and move conditions, were completed. This paper is one such exertion of take a look at examinations of heat flow. It gives the effect of sponsor replicate guides of motion at the warm temperature flow. This paper examines the nice and cozy execution of slanted roughened solar-primarily based totally air hotter with sponsor replicate.