Indian Journal of Engineering

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Volume 22, Issue 57, 2025

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Carbon quantum dots (CQDs) were synthesized from organic precursors, specifically rice husks, using a simple low-temperature hydrothermal process. This process did not involve surface passivation agents, oxidizing agents, or inorganic salts. Advanced analytical techniques such as X-ray diffraction (XRD), transmission electron microscopy (TEM), photoluminescence (PL), photoluminescence excitation (PLE), and Commission Internationale de l'Éclairage (CIE) were employed to investigate the structure, particle size, and optical properties of the CQDs. The positive effects of CQDs on the growth and development of green bean sprouts, morning glory, and mustard greens are detected in preliminary application trials. These findings will be the useful orientation for the application of CQDs in different crops.


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ARTICLE

Eco-friendly synthesis of Carbon Quantum Dots from rice husk and their potential applications in dicot plants

Tran Duc Loc, Pham Thi Bao Uyen, Tran Quang Vu, Nguyen Van Hai, Nguyen Van Phong, Pham Viet Hung, Vo Cong Anh, Ve Quoc Linh, Dao Le Minh Tuan, Do Thanh Tien

Carbon quantum dots (CQDs) were synthesized from organic precursors, specifically rice husks, using a simple low-temperature hydrothermal process. This process did not involve surface passivation agents, oxidizing agents, or inorganic salts.

Indian Journal of Engineering, 2025, 22(57), e1ije1687

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Evaluating high performance concrete properties partially replacing waste glass powder WGP and waste high density polyethylene (HDPE) beads

Al-Mashhadani Duraid Ali Jasim, Leong Sing Wong, Midhin AK Midhin, Mohammed Chyad Liejy

The abundant availability of High-Density Polyethylene (HDPE) and Waste Glass Powder (WGP) results from their large-scale production and single-use policies. Numerous methods have been explored by researchers to incorporate these waste materials as alternatives for concrete components

Indian Journal of Engineering, 2025, 22(57), e2ije1691

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Simulation model for energy generated in air-cooled condenser assisted by water mist pre-cooling system

Assem Alkarasneh, Waleed Momani, Zaid Abulghanam, Asim H Yousif, Alaa Mohammed, Omar A Shabi, Muntaser Momani, Nasser S Bajaba, Sayel M Fayyad

A simulation program for simulating an air-cooled condenser and air conditioning systems is presented in this research. The program can forecast the capacity of a condenser in two scenarios: one involves a clean condenser, and the other involves a condenser which is used in a water mist pre-cooling system

Indian Journal of Engineering, 2025, 22(57), e3ije1692

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Future climate projections and sustainable development: The impact of Urban Heat Islands and land use land cover in Telangana's GHMC area

Kishore Kumar Reddy P, Mohan Babu CG, Padma Priya KT, Venkata Rami Reddy Y, Vishnu Vardhan Reddy L, Madhusudhan Reddy M, Salla Arun Tejadhar Reddy, Gowsya Sheik, Kallakunta Ravi Kumar

This study investigates the urban heat island (UHI) effect in Hyderabad, Telangana, focusing on the Greater Hyderabad Municipal Corporation (GHMC) area, which spans 650 square kilometers.

Indian Journal of Engineering, 2025, 22(57), e4ije1690

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Flexural behavior of reinforced concrete beams containing hybrid fiber and recycled tire rubber

Noha Zaki, Ayman Khalil, Mohamed Said, Mohamed Makhlouf

One of the main goals of sustainable waste management is to maximize recycling and reuse. Environmental sustainability and trash management are aided by the reuse of tire rubber waste, such as crumb rubber (CR), as aggregate in concrete.

Indian Journal of Engineering, 2025, 22(57), e5ije1694

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Evaluation of static slope stability methods, regarding areas with buried gas pipelines, sewerage and cable networks

Grigorios Papageorgiou, Evangelos Paschalis, Nikolaos Alamanis, Theodoros Chrysanidis, Dimos Zahos

Across the world, there are areas susceptible to slope instability, probably due to their slope angle. It is well-known that, unfortunately, a large number of natural gas pipelines, sewerage and cable networks pass underground through these aforementioned areas making them vulnerable due to the possible slope instability.

Indian Journal of Engineering, 2025, 22(57), e6ije1696

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REPORT

Effect of Banana Stem Ash Reinforcement on Dry Sliding Wear Behavior of Polymer

Cheng Guang Ning, Farrukh MB, Ervina Efzan MN

Nowadays, Natural Fiber Reinforced Polymers (NFRPCs) are often used due to their superior physical properties and higher biodegradability than other materials

Indian Journal of Engineering, 2025, 22(57), e7ije1698

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ARTICLE

Solar water pumping: Experimental evaluation of the Buck converter effect under low irradiance conditions

Hachemi Ammar, Noureddine Benbaha, Mohamed Tewfik Bouziane

A stand-alone solar water pumping system is an excellent solution, especially for remote locations. In such systems, solar energy is captured directly from photovoltaic panels without using battery storage or any type of energy conversion

Indian Journal of Engineering, 2025, 22(57), e8ije1695

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Creative Commons License

© The Author(s) 2025. Open Access. This article is licensed under a Creative Commons Attribution License 4.0 (CC BY 4.0).