160 results match your criteria: "University of Petroleum and Energy Studies (UPES)[Affiliation]"

Ensemble deep learning and EfficientNet for accurate diagnosis of diabetic retinopathy.

Sci Rep

December 2024

Department of Computer Science and Information Engineering, Asia University, Taichung, 413, Taiwan.

Diabetic Retinopathy (DR) stands as a significant global cause of vision impairment, underscoring the critical importance of early detection in mitigating its impact. Addressing this challenge head-on, this study introduces an innovative deep learning framework tailored for DR diagnosis. The proposed framework utilizes the EfficientNetB0 architecture to classify diabetic retinopathy severity levels from retinal images.

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Drought is a natural disaster that can affect a larger area over time. Damage caused by the drought can only be reduced through its accurate prediction. In this context, we proposed a hybrid stacked model for rainfall prediction, which is crucial for effective drought forecasting and management.

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The ONG industry emits VOC such as BTEX, which pose health risks to workers. This study analyzed peer-reviewed research articles to provide BTEX emission profiles from three primary ONG operations and their associated health risks. PRISMA (Preferred Reporting Items for Systematic Reviews) was used to choose relevant articles for this review paper.

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Strain-induced bandgap engineering in 2D ψ-graphene materials: a first-principles study.

Beilstein J Nanotechnol

November 2024

Department of Physics, Applied Science Cluster, School of Advanced Engineering, University of Petroleum and Energy Studies (UPES), Bidholi via Premnagar, Dehradun, Uttarakhand 248007, India.

High mechanical strength, excellent thermal and electrical conductivity, and tunable properties make two-dimensional (2D) materials attractive for various applications. However, the metallic nature of these materials restricts their applications in specific domains. Strain engineering is a versatile technique to tailor the distribution of energy levels, including bandgap opening between the energy bands.

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In recent years, the anisotropic semiconductor nanoplatelets (NPLs) gained interest due to their unique optical properties, which depend primarily on their thickness. However, the formation mechanism behind the zinc blende CdSe NPLs remains unclear. Several theories were presented and discussed, but a concrete mechanism has not yet been found with evidence.

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The development of an excellent multifunctional electrocatalyst that is based on non-precious metal is critical for improving the electrochemical processes of the hydrogen evolution reaction (HER), the oxygen evolution reaction (OER), and the urea oxidation reaction (UOR) in alkaline media. This study demonstrates that incorporating Mo into CoO facilitated the formation of rich oxygen vacancies (Vo), which promotes effective nitrate adsorption and activation in urea electrolysis. Subsequently, in situ/operando X-ray absorption spectroscopy is used to explore the active sites in Mo-CoO-3 under OER, indicating the oxygen vacancies are first filled with OH in Mo-CoO; facilitated the pre-oxidation of low-valence Co, and promoted the reconstruction/deprotonation of intermediate Co-OOH.

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Article Synopsis
  • Supraparticles (SPs) made from superparamagnetic iron oxide nanoparticles (SPIONs) are being explored for biomedical uses and magnetic separation, with polymer shells added for stability and functionalization.
  • The study demonstrates an emulsion-based method to assemble SPIONs of varying sizes into SPs, with successful assembly depending on the mixing method and surfactant concentration.
  • The polymer shells, developed through a technique called AGET ATRP, allow for the addition of functional groups, enabling precise control over shell thickness and spacing, while maintaining the SPIONs' magnetic properties.
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  • This study presents a method for creating a 3D nanocomposite of BiOI, ZnO, and carbon nanofibers on a nickel foam substrate through a hydrothermal process.
  • The resulting material showed impressive specific capacitance of 1073 F/g at a current density of 1 A/g and maintained 88.6% of its original capacity after 5000 charge-discharge cycles in a potassium hydroxide solution.
  • These results underscore the potential of 3D nanomaterials as effective electrode materials for advanced supercapacitor applications due to their superior energy storage characteristics.
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Gelation Dynamics steering Frontiers in Technology: Unraveling Hotspots and Research Trends through Scientometric insights.

Int J Biol Macromol

November 2024

Department of Chemical Engineering, Energy Cluster, School of Advanced Engineering (SoAE), University of Petroleum and Energy Studies (UPES), Dehradun, Uttarakhand 248001, India. Electronic address:

The serendipitous occurrence of gels in science has been a milestone for further industrial revolutionization. The controlled formation and disassembly of gels coupled with their viscoelastic properties and their ability to undergo extensive structural modification to suit different applications have led to the widespread use of gelation technology in different domains of science such as sensing, material chemistry and physics, medicine, food and nutrition, ecology, and more. With the rising interest in gelators and gels applications, accurately depicting the current status of gelation and associated technology is of paramount importance for researchers and scholars already immersed in gel technology as well as those aiming to delve into this field.

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Seasonal Study Chemical Profiles and Bioactivities of Hedychium coronarium J. Koenig Essential Oils: Nematicidal, Insecticidal, Phytotoxic, Antifungal Potentials, and Molecular Docking Insights.

Chem Biodivers

September 2024

Campus de Pesquisa - Museu Paraense Emílio Goeldi - Botany Coordination, Av. Perimetral, 1901, Terra Firme, Belém - PA, 66077-830, Brazil.

Article Synopsis
  • Hedychium coronarium has gained interest for its diverse chemical compounds and possible health benefits, leading researchers to explore its essential oils.
  • The study, conducted in Uttarakhand, extracted oils with varying yields (0.07% to 0.38%) using hydrodistillation, uncovering seasonal differences in key compounds like 1,8-cineole and coronarin E.
  • Results indicated that these oils show significant biological activity, suggesting potential uses in natural pesticides, possibly through mechanisms affecting acetylcholinesterase.
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Potassium, a pivotal macronutrient essential for growth, development, and crop yield, serves as a critical determinant of soil productivity. Its depletion disrupts the equilibrium of soil nutrients, prompting an investigation into integrated potassium management strategies to address this challenge. A field experiment was conducted during the winter season of 2020 using a randomized complete block design, with eight treatments, each replicated three times in Chinese cabbage ( L.

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Article Synopsis
  • * Analysis of DNA methylation data, particularly through techniques like bisulfite sequencing, allows researchers to study the relationship between gene methylation patterns and various diseases.
  • * The Differential Methylation Analysis Pipeline (DMAP) has been developed to facilitate efficient analysis of DNA methylation data, offering a user-friendly protocol compatible with various input formats for both whole-genome and reduced-representation bisulfite sequencing.
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  • α-NaMnO@NaMnO and KMnO@NaMnO nanocomposites were created using a solid-state reaction method, resulting in a distinct column-shaped structure observed through FESEM imaging.* -
  • FTIR analysis showed that the vibration frequencies changed with potassium loading, indicating alterations in the material's properties.* -
  • Electrochemical tests revealed high specific capacitance values of ∼361 F/g for α-NaMnO@NaMnO and ∼143 F/g for KMnO@NaMnO, along with excellent cycle stability and lower resistance, making them efficient options for supercapacitor use.*
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  • This study investigates the extraction of natural wax from banana biomass (Musa acuminata) using different types of solvents, focusing on both polar and non-polar options.
  • The highest wax yield was achieved with ethanol (10.26%), while wax was only present in non-polar solvent extractions (toluene and hexane).
  • Advanced techniques like Thin Layer Chromatography (TLC) and Fourier Transform Infrared Spectroscopy (FTIR) were employed to analyze the hydrocarbon chains in the extracted wax, confirming its similarity to natural wax.
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In the recent past, the formulation and development of nanocarriers has been elaborated into the broader fields and opened various avenues in their preclinical and clinical applications. In particular, the cellular membrane-based nanoformulations have been formulated to surpass and surmount the limitations and restrictions associated with naïve or free forms of therapeutic compounds and circumvent various physicochemical and immunological barriers including but not limited to systemic barriers, microenvironmental roadblocks, and other cellular or subcellular hinderances-which are quite heterogeneous throughout the diseases and patient cohorts. These limitations in drug delivery have been overcome through mesenchymal cells membrane-based precision therapeutics, where these interventions have led to the significant enhancements in therapeutic efficacies.

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Determining hazardous substances in the environment is vital to maintaining the safety and health of all components of society, including the ecosystem and humans. Recently, protein-based nanobiosensors have emerged as effective tools for monitoring potentially hazardous substances in situ. Nanobiosensor detection mode is a combination of particular plasmonic nanomaterials (e.

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Privacy-Centric AI and IoT Solutions for Smart Rural Farm Monitoring and Control.

Sensors (Basel)

June 2024

Department of Computer Science and Information Engineering, Asia University, Taichung 413, Taiwan.

The integration of artificial intelligence (AI) and the Internet of Things (IoT) in agriculture has significantly transformed rural farming. However, the adoption of these technologies has also introduced privacy and security concerns, particularly unauthorized breaches and cyber-attacks on data collected from IoT devices and sensitive information. The present study addresses these concerns by developing a comprehensive framework that provides practical, privacy-centric AI and IoT solutions for monitoring smart rural farms.

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Biogenically synthesized porous TiO nanostructures for advanced anti-bacterial, electrochemical, and photocatalytic applications.

J Environ Manage

August 2024

Center for Energy and Environment, School of Advanced Sciences, KLE Technological University, Hubballi, Karnataka, 580 031, India; School of Engineering, University of Petroleum and Energy Studies (UPES), Dehradun, Uttarakhand 248007, India; Korea University, Seoul, Republic of Korea. Electronic address:

This study develops environmentally benign capping technique to synthesize nanoparticles of Curcuma longa-coated titanium dioxide (CR-TiO) from titanium isopropoxide by utilizing the extract of Rosa rubiginosa flowers as reducing and chelating agent. The biogenically synthesized nanoparticles revealed excellent anti-bacterial, electrochemical, and photocatalytic properties due to the presence of porous TiO nanostructures. The sharp peaks by XRD pattern showed the crystallinity and phase purity of TiO nanoparticles.

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The significance of integrating agricultural by-products such as paddy husk ash (PHA) and potato peels with organic fertilizers lies in enhancing soil fertility, increasing crop yields, and reducing reliance on traditional organic fertilizers like farmyard manure (FYM) or compost alone. Grounded in sustainable agriculture and nutrient management frameworks, this study examines the impact of diverse formulations derived from agricultural waste on productivity, nutrient efficiency, and profitability in a pigeon pea-vegetable mustard-okra cropping system. A two-year field experiment (2020-2022) at ICAR-IARI, New Delhi tested seven nutrient sources viz.

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In this study, an easily synthesizable Schiff base probe TQSB having a quinoline fluorophore is demonstrated as a fluorescent and colorimetric turn-on sensor for Al ions in a semi-aqueous medium (CHCN/water; 4 : 1; v/v). Absorption, emission and colorimetric studies clearly indicated that TQSB exhibited a high selectivity toward Al, as observed from its excellent binding constant ( = 3.8 × 10 M) and detection limit (7.

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In this work, an effort has been made to enhance the efficacy of biological process for the effective degradation of 2, 4-dichlorophenol (2, 4-DCP) from wastewater. The polyurethane foam was modified with FeO nanoparticles and combined with polyvinyl alcohol, sodium alginate, and bacterial consortium for biodegradation of 2, 4-DCP in a packed bed biofilm reactor. The maximum removal efficiency of 2, 4-DCP chemical oxygen demand, and total organic carbon were found to be 92.

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The interest in algae-derived bioactive compounds has grown due to their potential therapeutic efficacy against a range of diseases. These compounds, derived from proteins, exhibit diverse functions and profound pharmacological effects. Recent research has highlighted the extensive health benefits of algae-derived bioactive compounds, positioning them as potential natural antioxidants in the food, pharmaceutical, and cosmetic industries.

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This study aims to focus on developing a food supplement for the geriatric population using disposal mushrooms, oats, and lactose-free milk powder. Lactose intolerance is most common in older adults, raising the demand for lactose-free foods. One of the major global challenges currently faced by humankind is food waste (FW).

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