| 1 |
Author(s):
Ravi Kumar.
Country:
India
Research Area:
Electrical Engineering
Page No:
1-8 |
Design and Implementation of a Solar Panel Tracking and Protection System Using Arduino and Sensor Integration
Abstract
This paper presents the design and implementation of a single-axis sun tracking and protection system aimed at improving the efficiency and longevity of photovoltaic (PV) panels. The system utilizes Light Dependent Resistors (LDRs) and airflow sensors to adjust the orientation of the PV panels, ensuring they are always positioned to face the direction of maximum solar irradiation. This alignment optimizes energy absorption, thus enhancing system performance. Additionally, the system incorporates a protective feature that adjusts the panel orientation in response to harsh winds. By aligning the panels parallel to the wind direction, the system minimizes potential damage to the PV modules.
The algorithm governing the system operates in two modes: solar tracking and solar protection. Under normal weather conditions, the system prioritizes solar tracking, continuously adjusting the panel orientation to maximize sunlight exposure. However, when the system detects the onset of strong winds, the algorithm switches to the protection mode, temporarily halting solar tracking and repositioning the panels to mitigate wind damage.
This paper elaborates on the design principles, sensor integration, and algorithm development behind the system. It also discusses the potential benefits of combining sun tracking with environmental protection, leading to improved efficiency during favorable weather and enhanced durability under extreme conditions. The system aims to provide a sustainable solution for optimizing PV performance and safeguarding panels in varying environmental scenarios.
| 2 |
Author(s):
Prakash Walhekar.
Country:
India
Research Area:
Computer Engineering
Page No:
9-17 |
Development and Implementation of an Online Attendance Management System: Advancements, Benefits, and Challenges
Abstract
The Online Attendance Management System is a web-based application designed to simplify and automate the process of tracking and managing attendance in educational institutions, organizations, or events. Traditional methods of attendance management are often time-consuming and prone to errors, which this system aims to address. It offers an efficient, user-friendly solution for recording and monitoring attendance, featuring real-time updates, role-based access, and automated reporting.
This system enables instructors, administrators, and students to interact with a centralized platform, where teachers can mark attendance manually, or through biometric or QR code scanning. Key features include leave management, attendance analysis, and automated notifications for both students and staff. The system also provides a secure database for storing and retrieving attendance records, ensuring the integrity and privacy of the data.
By incorporating modern technology, the Online Attendance Management System eliminates the need for paper-based registers, reduces the risk of human error, and ensures that attendance data is always up-to-date and easily accessible. This solution enhances the efficiency and accuracy of attendance tracking, making it an ideal tool for both educational institutions and businesses.
| 3 |
Author(s):
Dr. Vijay Kant Pandey, Dr. Timbrel Menen Tigga, Dr. Bimlendu Kumar Roy.
Country:
India
Research Area:
Life Science
Page No:
18-25 |
Impact of Industrialization on River Water Quality in Jharkhand: Causes and Consequences
Abstract
Jharkhand became the 28th state in India in year 2000. Because it possesses so many minerals, it has become an important industrial centre. However, the water quality in its rivers has gotten a lot worse because industry has grown so quickly. The essay looks at the different ways that industrial growth and river water pollution are linked in Jharkhand. It looks at the main causes, which include mining, making steel, generating thermal power, and poor waste management systems. The study combines what we now know about pollution sources, water quality indicators, and environmental effects, and it also points out problems with present efforts to reduce pollution. The results show that the quality of water in important rivers like the Damodar, Subarnarekha, and Kharkai has gotten much worse, which is bad for both ecosystems and people's health. The evaluation ends with suggestions for better rules and more environmentally friendly company practices to deal with this big problem for the environment.
| 4 |
Author(s):
Ajoy Kumar Dey.
Country:
India
Research Area:
Physics
Page No:
26-37 |
A Theoretical Study of Pressure Distribution of Magnetohydrodynamic (MHD) Flow Due to Exponentially Growing Source
Abstract
Navier-Stokes equations are limited under some approximation when the viscous forces are considerably greater than the inertia forces. When the velocity of a fluid flow is small, viscous forces are dominant. This kind flow is common when the Reynolds number is very small (Re<1), under this condition the inertia terms may be omitted from the equation of motion of the fluid. This type of fluid motion does not occur in practical application but some time may occur in nature. This paper aimed to investigate the pressure distribution of a viscous incompressible fluid due an exponentially growing source between two parallel stationary disks in presence of uniform transverse magnetic field for small Reynolds number (Re<1). Navier-Stokes equations are solved to evaluate pressure distribution of the fluid. Using computer programming, graphs are plotted to study the relative variation of pressure of the fluid with magnetic field parameter such as Hartmann number (M), reduced Reynolds number (Re*) and growing factor of the source (n). Finally results that are found by analyzing graphs due to exponentially growing source are compared with similar work for exponentially decay source. This study investigates the pressure distribution of a viscous, incompressible fluid subjected to an exponentially growing source between two parallel stationary disks, in the presence of a uniform transverse magnetic field, for small Reynolds numbers. The results offer valuable contributions to the understanding of magnetohydrodynamic flows in low-Reynolds-number regimes, with potential applications in both theoretical and natural fluid flow phenomena.
| 5 |
Author(s):
Lalit Baruah, Ajoy Kr Dey, Debashis Sharma, S. S. Nath.
Country:
India
Research Area:
Physics
Page No:
38-47 |
Electro-Optical Characterization and Enhanced Electroluminescence of Copper-Doped CdTe and ZnTe Quantum Dot for Nano-LED Applications
Abstract
This study presents electro-optical characterization of self-assembled thin films composed of copper-doped CdTe and ZnTe quantum dots synthesized via a straightforward chemical route. High-resolution transmission electron microscopy (HRTEM) confirm that the CdTe:Cu and ZnTe:Cu quantum dots adopt a spherical structure with sizes below 15 nm and can be uniformly incorporated into thin films. Scanning electron microscopy (SEM) reveals surface morphology and roughness of these films. Optical absorption measurements show a blue-shifted sharp absorption edge at 426 nm for CdTe:Cu, corresponding to an increased band gap energy of 1.23 eV. For ZnTe:Cu quantum dots, a band gap increase of 1.91 eV is observed. Electroluminescence (EL) spectra of CdTe:Cu closely match their fluorescence spectra, exhibiting smooth and sharp emission peaks between 605 and 614 nm. Also ZnTe:Cu quantum dots demonstrate intense green luminescence, attributed to effective Cu²⁺ ion incorporation, which enhances emission intensity in both nanocomposites. These findings highlight that copper doping significantly modifies the optical properties of CdTe and ZnTe quantum dots, producing enhanced luminescence suitable for applications in nano light-emitting devices (nano-LEDs). The ability to chemically prepare homogeneous films with controlled optical features offers promising opportunities in optoelectronic device fabrication.
