Category Archives: Uncategorized

Authors: Dr. Satish Kumar

Abstract: This research investigates the steady, laminar Couette flow of a viscous incompressible fluid through a porous medium bounded by two infinite horizontal parallel plates. A transverse magnetic field and thermal radiation effects are typically incorporated to analyze their impact on the flow and thermal characteristics. the fluid is electrically conducting, the effects of the porosity of the medium, the surface stretching velocity, The heat generation coefficient on both the flow and heat transfer are presented. The governing partial differential equations for momentum and energy are formulated based on Darcy’s law.

DOI: https://doi.org/10.5281/zenodo.19681181

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Authors: Dr. Rishabh Bhardwaj, Km. Aakansha

Abstract: Synthetic acid-base indicators, though widely used, present challenges such as toxicity, environmental hazards, and high cost. This study explores the preparation of eco-friendly pH indicator strips using natural sources including turmeric (Curcuma longa), rose (Rosa indica), beetroot (Beta vulgaris), and red cabbage (Brassica oleracea). Extracts were prepared by aqueous extraction and applied to paper strips to develop natural indicators. The prepared strips were tested on 59 household chemicals and 14 standard pH solutions (pH 1–14). The results demonstrated distinct color variations for acidic, neutral, and basic media. Red cabbage showed a wide color range comparable to universal pH paper, while turmeric, rose, and beetroot exhibited clear differentiation between acids and bases. The study confirms that natural indicators are cost-effective, biodegradable, non-toxic, and suitable alternatives to synthetic indicators for educational and analytical applications.

DOI: https://doi.org/10.5281/zenodo.19680163

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Authors: Dr Ch V Krishna Reddy, MVV Aneesh, V Yushma Naga Surya, N Akhil Sai

Abstract: The dependence of electric vehicle (EV) charging on grid electricity drawn from fossil-fuel-based generation defeats the purpose of sustainable mobility. This paper presents the design and prototype development of a tri-hybrid renewable EV charging station that simultaneously harvests energy from three independent sources: a Solar Photovoltaic (PV) array, a Vertical Axis Wind Turbine (VAWT), and a Regenerative Speed Bump (RSB) mechanism. Each source feeds a common 12 V DC bus through dedicated signal-conditioning chains — MPPT for solar, and full-bridge rectifier followed by a voltage regulator for VAWT and RSB — with isolation diodes preventing reverse current flow. The conditioned power charges a 12 V, 5 Ah lead- acid battery, from which an EV charging dock is supplied. Energy calculations based on actual prototype hardware yield a gross daily harvest of approximately 182.9 Wh, reducing to roughly 128 Wh of usable energy after system losses. The three sources are chosen for their complementary availability: solar dominates during clear daylight, wind supplements during low- irradiance periods, and the speed bump produces a transient energy pulse with every vehicle passage. The prototype, demonstrates a cost-effective, grid-independent charging solution scalable to full-station deployment.

DOI: https://doi.org/10.5281/zenodo.19678780

Published by: vikaspatanker

Authors: Dr. Rishabh Bhardwaj, Farheen Mansuri, Ms. Harshita Sharma

Abstract: The development of eco-friendly nanomaterials has gained significant attention due to increasing environmental concerns associated with conventional chemical synthesis. This study focuses on the green synthesis of copper oxalate nanopowder using plant extracts as natural reducing and stabilizing agents. Plant-derived phytochemicals such as flavonoids, phenolics, and proteins facilitate nanoparticle formation under mild conditions. The synthesized nanopowder was characterized using basic analytical techniques including UV–Visible spectroscopy, pH measurement, conductivity analysis, viscosity studies, and flame photometry. The results confirmed successful formation of copper oxalate nanoparticles, indicated by characteristic spectral features and stable physicochemical properties. The green synthesis approach proved to be cost-effective, safe, and environmentally benign. The study highlights the potential of plant-mediated synthesis for developing sustainable nanomaterials and their possible applications in catalysis, environmental remediation, and material science.

DOI: https://doi.org/10.5281/zenodo.19678287

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Authors: Dr. Rishabh Bhardwaj, Iram Khan, Ms. Meenal Maan

Abstract: Heavy metal contamination in agricultural soils has become a major environmental concern due to its adverse effects on soil quality, crop productivity, and human health. The present study focuses on the quantitative analysis of heavy metals in agricultural soil samples collected from selected locations. Metals such as lead (Pb), cadmium (Cd), chromium (Cr), nickel (Ni), zinc (Zn), and copper (Cu) were analyzed using standard analytical techniques. Soil samples were collected, air-dried, sieved, and subjected to acid digestion followed by analysis using Atomic Absorption Spectroscopy (AAS). The results indicated variation in heavy metal concentrations across different sampling sites, reflecting the influence of anthropogenic activities such as fertilizer use, wastewater irrigation, and industrial emissions. Some metals were found near or above permissible limits, indicating localized contamination. Statistical analysis revealed correlations among metals, suggesting common sources. The study highlights potential environmental and health risks associated with heavy metal accumulation and emphasizes the need for sustainable soil management and regular monitoring.

DOI: https://doi.org/10.5281/zenodo.19677896

 

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Authors: Ganapathy T, Thirumalai T, Anbarasan A J

Abstract: The Real-Time Visual Crowd Guidance System for Railway Stations is a smart safety and passenger management solution developed using Python and ESP32 with serial communication. A camera connected to the Python system continuously monitors the crowd near each train compartment and analyzes the density in real time using computer vision techniques such as OpenCV-based people detection. Based on the crowd level, the Python application sends serial commands to the ESP32, which controls the red, yellow, and green LEDs, buzzer, and LCD display to guide passengers. When the crowd is high, the red LED glows, buzzer alerts, and the LCD displays “Move to Next Compartment”; for moderate crowd, the yellow LED indicates caution; and for low crowd, the green LED with the message “You Can Enter” is shown. This system helps reduce congestion, improves passenger flow, and enhances safety in railway stations during peak hours through real-time visual and audio guidance.

DOI: https://doi.org/10.5281/zenodo.19676460

 

Published by: vikaspatanker

Authors: M. Saicharan, K.Hari Krishna, J. Krishna, Dr M.Sri Suresh

Abstract: A 2 kW Hybrid Microgrid with PV, Wind Turbine and BESS: Design, Modeling and Simulation. In this paper, design, modeling and simulation of a 2 kW hybrid renewable energy microgrid having solar PV, wind turbine generation and BESS are presented. Perturb and observe (P&O) MPPT algorithm is adopted for PV subsystem whereas dynamic wind speed model is used for wind turbine. In this model, a Fuzzy Logic Controller (FLC) controls the power flow between battery, load, grid, and renewable sources in real time. The DC link is connected to AC grid through a three-phase inverter and transformer. Simulation results in MATLAB/Simulink indicate that the proposed system can supply steady 2 kW load with proper battery charge/discharge control and it doesn't need a lot of grid power. The proposed system can find applications in rural electrification, isolated communities, and smart grid installations.

DOI: https://doi.org/10.5281/zenodo.19675652

Published by: vikaspatanker

Authors: Pratik Halnor, Om Kale, Vishal Gore, Abhishek Kahar, Devyani Jadhav

Abstract: Retrieval-Augmented Generation (RAG) improves the factual accuracy of Large Language Models by grounding responses in external documents. However, most existing systems rely on dense em-beddings, vector databases, and GPU-based computation, making them unsuitable for low-resource environments. This paper presents a lightweight RAG system designed specifically for CPU-only environments. The system integrates PDF text extraction and Optical Character Recognition (OCR) using PyMuPDF and Tesseract, followed by a keyword-based retrieval mechanism. The retrieved context is then passed to a language model API for response generation. Experimental evaluation demonstrates that the system achieves an accuracy of 83.3% with an average response time of approximately 2.2 seconds. The results highlight that efficient document intelligence systems can be developed without heavy computational requirements

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Authors: Amit Gupta, Mohammad Mokarram Siddiqui, Kaminee Pachlasiya, Santoshi Kharal

Abstract: To address these challenges, this study proposes a Service Provider & Job Seeker Ap-plication, a digital platform designed to connect customers directly with skilled workers through a centralized and interactive system. The application enables service providers to register, create professional profiles, and showcase their skills, while customers can search, compare, and hire workers based on ratings, location, and availability.The system architecture is built using modern technologies such as React Native for frontend development, Node.js with Express for backend services, and MongoDB/MySQL for data storage. It incorporates essential features such as realtime booking, secure digital payments, notifications, and a rating system to ensure trust and transparency.Unlike traditional service models, the proposed system not only simplifies the hiring process but also enhances employment opportunities for skilled workers by providing them with a digital platform. Additionally, features like role-based access control, real-time updates, and analytics improve system efficiency and scalability.Overall, the application the gap between service seekers and job seekers, promoting digital transformation and improving accessibility in the service industry.

DOI: https://doi.org/10.5281/zenodo.19675217

Published by: vikaspatanker

Odimgbe Ezekiel Izuu
Affiliation	Graduate Assistant, Industrial Chemistry Department .
Email-Id:	easyodimx@gmail.com
Publication: Odimgbe Ezekiel Izudike, Clark Poro David, Olubunmi Abiola Adewusi, Akpanuko Mary Emmanuel, Apuyor Stanley Ejohwomu, Onwugbuta Godpower Chukwuemeka,  Ikechukwu Sampson Chikwe and Erienu Obruche Kennedy (2026). Modification of Coconut Shell Activated Carbon With an Azo Ligand (Ddptp) For Enhanced Removal Of Pb²⁺ From Contaminated Water. FUDMA Journal of Sciences (FJS), 10 (2): 284 – 293. Akacha Joshua Richard, Oladosu Micheal Abimbola, Moses Adondua Abah, Oderanti Mustapha Olayemi, Agbanigo Bolade Sunday, Imade Blessing, Shinggu Paula Paul, Akinbolawa Olujimi Adeolu, Okabeonye Sunday Agbo, Inyam Benjamin Izang, Odimgbe Ezekiel Izudike , Philemon Onyejeme Chimere, Igwe Ejikeme Peter. (2025).The Effect of Cefuroxime on Aquatic Macrophyte (Lemna Minor) and Algae (Scenedesmus Sp.). Journal of Medical Discoveries, RPC Publisher, 2(1): 1 – 15. Moses Adondua Abah, Micheal Abimbola Oladosu, Sulaiman Luqman Olaitan, Leah Eneotse Adayi, Silas Verwiyeh Tatah,  Ochuele Dominic Agida, Okocha Jennifer Uchenna, Ibrahim Ayinla Mahmud, Odimgbe Ezekiel Izudike, Ridwan Musa, Najamu Yau, and Okpanachi Nuhu Oyibo (2025). Advanced Oxidation Processes for the Degradation of Organic Pollutants in Wastewater. Environmental Sciences and Ecology: Current Research (ESECR), 6(1): 1 – 7. Kehinde Sowunmi; Oladosu Micheal Abimbola; Moses Adondua Abah; Luqman Olaitan Sulaiman; Odimgbe Ezekiel Izudike; Ugwah Jiata Ekele; Dele-Osibanjo Taiwo A; Olowookere Adepeju Kafayat; Adewale Femi Emmanuel; Julius Sarah Oluwaseun; Nnametu Peter Onyedikachukwu; Agbanigo Bolade Sunday; Tobi David Farinde; Olutayo Nathaniel Farinde; Kelechi Asogwa; Taiwo Awojulu; Sunday Ameh (2025). Green Synthesis, Photo-Physical Characterization, and Evaluation of in-vitro Antioxidant, Anti- Inflammatory, and Antidiabetic Properties of Selenium Nanoparticles Derived from Nigella Sativa seeds. Journal of Nanomedicine, 8(1): 1 – 6. Micheal Abimbola Oladosu, Moses Adondua Abah, Ezekiel Izudike Odimgbe3, Femi Emmanuel Adewale, Clinton Arthur, Abiola Samuel Ajayi, Joseph Ezeani, Franklin Ogonna Ede, Olaide Ayokunmi Oladosu, Emmanuella Chidimma Ohanele (2026). Smart Electrochemical Sensors and Iot For Monitoring Heavy Metals in Nigerian Water: Review Of Advances And Deployment Challenges. Trends in Ecological and Indoor Environmental Engineering, 4(1), 79–89.

Published by: vikaspatanker