International Journal of Engineering & Technology Sciences

This study looks into the opportunities and difficulties of integrating renewable energy into supply chains and provides advice on how to do it successfully. The introduction sets the stage for the conversation by emphasizing how important it is for businesses to switch to renewable energy sources while taking regulatory pressures, environmental concerns, and the changing nature of sustainable business practices into account. The methodology used for this study entails a thorough analysis of the body of prior research, synthesizing knowledge about opportunities and problems related to supply chains’ adoption of renewable energy. The review’s findings paint a complex picture that includes issues like the erratic nature of renewable energy sources, complicated regulations, and the shortage of trained workers. Manufacturing innovations, strategic alliances, and a dedication to sustainable practices all present opportunities. An important factor that coincides with the increasing focus on corporate responsibility is stakeholder engagement. The identification of innovative manufacturing technologies, like 3D printing and advanced materials, is suggested as a means of improving efficiency. Strong alliances and cooperative efforts, both in the industry and with regulatory agencies, aid in the establishment of robust and environmentally friendly supply chains. Engagement and training of employees become essential elements in ensuring that businesses have the trained labor force required for the adoption of renewable energy. To lessen environmental effects, it is also recommended to concentrate on lifecycle assessments and circular economy techniques. To sum up, this research offers a thorough analysis of the opportunities and problems associated with integrating renewable energy into supply chains. It also provides a roadmap for businesses looking to make their way through this ever-changing environment and help create a more sustainable future.

This study examines how Product Lifecycle Management (PLM) can be integrated into the circular economy, with an emphasis on how it can improve sustainability. To address urgent global issues like resource depletion and environmental degradation, a circular economy must be adopted. PLM that works well is going to be essential to making this shift. In reviewing the state of PLM and the integration of the circular economy, the paper draws on important discoveries that highlight the practices’ transformative potential. It assesses the advantages of implementing PLM in the circular economy from an environmental, economic, and social standpoint by looking at the body of research and empirical data. Additionally, it addresses new developments, like the role of cutting-edge technologies (like AI and IoT) and offers suggestions for businesses and legislators to support this integration. The results highlight how incorporating PLM into the framework of the circular economy can drastically cut waste production, improve resource efficiency, and lessen environmental impact. PLM-supported circular design concepts and business models provide cost savings, revenue diversification, and enhanced brand recognition. Beyond financial gains, PLM integration has significant positive social effects as well, such as increased employment and easier access to reasonably priced, high-quality goods. Long-term effects include resilience, global sustainability, and industry transformation, providing a viable path forward for tackling global issues. This study emphasizes how crucial efficient PLM is to reach global sustainability goals at a time when sustainability is of the utmost importance. Businesses can align themselves with the larger sustainability movement and promote a more sustainable and prosperous future by incorporating PLM into their strategies. This paper highlights PLM’s transformative potential in the context of the circular economy and its capacity to tackle the world’s most pressing issues.

The comprehensive analysis presented in this review underscores the significant implications of energy coupling within low-dimensional contact systems, particularly in the context of nanoscale technology. By critically evaluating the latest developments in understanding and controlling energy transport processes across atomic-scale interfaces, this article sheds light on the fundamental mechanisms governing energy coupling, encompassing phonon, electron, and photon transport. The exploration of quantum effects and confinement in various low-dimensional materials, such as nanotubes, graphene, and 2D layered structures, further enriches our understanding of energy coupling behavior. Moreover, the study underscores the practical relevance of this knowledge in optimizing nanodevice performance, spanning from enhanced energy harvesting to more efficient thermal management. As scientists continue to unravel the intricacies of atomic-scale energy coupling, this review serves as a comprehensive synthesis of current knowledge, identifying key challenges and future prospects that can catalyze groundbreaking advancements in nanotechnology. 

This article focuses on the behavior of reinforced concrete frames with corroded steel reinforcements at different corrosion rates. To achieve this, the study delves into factors influencing corrosion, including the reduction of mechanical properties of steel reinforcements, the decrease in mechanical properties of concrete cover, and the decrease in the bond strength between steel reinforcements and concrete, to investigate the explosive behavior of these structures. Seven models with identical concrete frame geometries were analyzed in this study, with variations only in the rates of steel reinforcement corrosion and the affecting factors. Concrete frames with steel reinforcements corroded at rates of 5%, 10%, and 15%, considering the simultaneous and individual effects of reducing the mechanical properties of steel reinforcements, decreasing the mechanical properties of the concrete cover, and reducing the bond strength between steel reinforcements and concrete, were examined. The results indicate that the reduction in bond strength between steel reinforcements and concrete significantly reduces the resistance of concrete frames. Moreover, as the level of corrosion in the reinforcements increases, the extent of damage inflicted on the structure will significantly rise.

In this research, we investigate the behavior of square concrete columns reinforced with FRP (Fiber-Reinforced Polymers) under explosive loading. To achieve this objective, we first reviewed previous studies and selected a reference paper for result validation and simulation in the ABAQUS software. The reinforced concrete column in our study was subjected to an explosive load equivalent to 682 kilograms of TNT at a distance of 6.1 meters. We extracted and compared the displacement at the center of the column with the results presented in the reference paper to validate our simulations. Furthermore, we examined 12 other specimens strengthened with FRP sheets in this research. These 12 specimens were categorized into four groups, each with one parameter variation. In the first category, we varied the thickness of the FRP sheet from 1 to 3 millimeters. In the second category, we altered the orientation of the fibers, using angles of 0, 22.5, and 45 degrees. In the third category, we changed the arrangement of the FRP sheets, including full coverage, one-third on the top and two-thirds on the bottom, and a model with one-third in the middle. Finally, in the fourth category, we varied the column length from 2 to 5 meters, and we investigated how these parameter changes affected the performance of the reinforced column against explosive loads. For the first model with a 1- millimeter thick reinforcing FRP sheet, we obtained a displacement of 35 millimeters. In the second model, where the thickness ranged from one to two millimeters, the center displacement of the column was 28 millimeters. Detailed results for the other models are presented throughout the study.

As the maritime industry grows rapidly in size, more attention is being paid to to a wide range of aspects of problems faced at ports with respect to the efficient allocation of resources. A very important seaside planning problem that has received large attention in literature lately is the quay crane scheduling problem (QCSP). The problem involves the creation of a work schedule for the available quay cranes at the port to vessel or given set of vessels. These optimization problems can be very complex and since they involve a large number of variables and constraints, the use of a commercial solver is impractical. In this paper, we reformulate a problem that can be solved by column generation. Finally, the proposed model was coded and solved by the exact solver GAMS 25.0 and evaluated by some evident examples. Also in view of theoretical challenges, and industrial implicating a genetic algorithm is proposed to solve the problem. The performance of proposed algorithm is evaluated by a number of numerical example. Finally, computational results show that the proposed algorithm significantly outperforms.