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Ramie is a promising natural fiber that can be reinforced into polymers due to its good mechanical properties, light weight, easy availability, non-reactiveness, eco-friendliness and low cost. The present research focuses on developing a new class of polymer composites with woven ramie fibre mats reinforced in epoxy resin. These multi-layered composites are fabricated using conventional hand layup method. The cured composite samples are subjected to various physical, and mechanical characteri...
A floating spherical hydrogel evaporator (SHE) is designed to achieve sunlight-driven desalination, self-salt cleaning, and removal of environmental contaminants. The spherical lightweight polystyrene is coated with a porous carbonembedded sodium alginate/PVA/CMC photothermal hydrogel to generate a spherical hydrogel evaporator (SHE) that floats naturally. The SHE is very sensitive to the weight imbalance (500 mg) and can respond quickly to the accumulation of salt by rotation to the fresh ev...
Polymer composites with both fiber and filler reinforcements are finding extensive uses in various application areas where their machining ability such as drilling or milling performance plays a decisive role. In this context, this investigation reports on the application of machine learning (ML) techniques and statistical methods to analyze and predict the drilling performance of ramie fiber reinforced epoxy composites filled with sponge iron (SI) slag particles. These hybrid composites are ...
Solution-processed OLEDs offer a promising and affordable technology for solid-state lighting and superior self-luminous display panels. Herein, an imidazo[1,5-a]pyridine (ImPy)-based fluorophore decorated with an aromatic π-system anthracene is synthesized by a one-pot condensation approach. From the theoretical study, the energy difference between HOMO and LUMO is 3.1 eV. The molecule shows excellent thermal stability and electrochemical stability. It exhibits efficient intramolecular charg...
This study investigated the impact of Waste Engine Oil (WEO) in the compaction process and explored the compaction mechanism of HMA. The major scopes of this study include modification of asphalt binder using WEO, conducting performance characterization, and analyzing workability through compaction studies. The research methodology involves preparing HMA using Viscosity-graded (VG) bitumen modified with WEO and WEO combined with lime, along with control mixtures using Superpave Gyratory Compa...
Considering the widespread use of polymer composites in different engineering and structural applications, it is imperative to predict their strength properties in order to recommend their use in the workplaces. Numerical method using concept of finite element, finite difference etc. have proven as effective tools for such estimation bypassing experimental trials that are usually expensive and time consuming. In view of this, the present work is taken up to find out tensile strength of multil...
Sodium ion batteries (SIBs), relying on highly abundant sodium, present a compelling alternative to lithium-ion batteries with superior electrochemical performance, a broad operating temperature range, and rapid charging capabilities. However, liquid electrolytes with electrochemical instability and low ion selectivity in SIBs can lead to leakage concerns. As a solution, the NASICON-type solid-state electrolyte, Na3Zr2Si2PO12 (NZSP), emerges as a potential candidate for all-solid-state Na bat...
The Porous piezoelectric ceramics have emerged as a focal point of research due to their adjustable piezoelectric and mechanical characteristics, paving the way for applications like piezoelectric hydrostatic acoustic sensors and energy harvesting systems. Recently piezo catalysis has garnered attention for its efficacy in pollutant degradation via the piezoelectric effect. Traditional piezocatalysis, predominantly in powder form, presents challenges in recovery post-application, necessitatin...
This study investigates the potential of incorporating industrial waste materials into concrete pavement as a sustainable solution to address both environmental concerns and enhance the performance of construction materials. The focus is on utilizing industrial by-products, such as fly ash, bottom ash, blast-furnace slag, copper slag and recycled concrete aggregate as partial or complete replacements for traditional cement and natural aggregates in concrete mixtures. The project explores the ...
Methane (CH4) with its explosive nature possesses potential threat in coal mines. Real-time methane monitoring is crucial because an explosion might occur if there is 4-5% methane in the air1. Towards this direction, substantial research has been done on chemiresistive type gas sensors based on transition metal oxides for the sensing of toxic gases because of their ease of altering the electrical conductivity upon interaction with analyte gaseous molecules2. Further, conventional metal oxide ...
This study examines how changing climate and LULC in southern India's semi-arid Chitravathi basin affect evapotranspiration (ET) and potential evapotranspiration (PET) in the near future (NF) (2015- 2030). The future LULC map is produced using cellular automata and artificial neural networks (CA ANN). ET and PET were estimated using the hydrological model SWAT (Soil and Water Assessment Tool). This study used the meteorological data (precipitation and temperatures) with a resolution of 0.25˚x...
NO2 (Nitrogen dioxide) is among the most hazardous gases and common air pollutants as declared by the World Health Organization (WHO) which is produced by combustion processes and exhaust fumes of cars. It can cause diseases such as respiratory irritation, emphysema, and bronchitis even at a low concentration [1]. Therefore, the development of ideal gas sensors with high stability, rapidity, repeatability, and sensitivity is desirable. ABO3 type metal oxide perovskite have garnered attention ...
This study examined the effects of land use land cover (LULC)and climate change on streamflow, sediment yield, and nutrient loading in the Rengali catchment of the Brahmani basin, located in the Eastern part of India. The LULC was determined by using Landsat images. At the same time, climate data were obtained from eleven general circulation models (five models from CMIP5 and six models from CMIP6) for representative pathways (RCP) 4.5 (moderate emission) and 8.5 (high emission). An Artificia...
This present research was carried out to study the impact of Chitin(Ch) modified bitumen on bituminous mixes. Bitumen of grade VG-30 was selected as base binder for modification and 2.5% of Chitin (by weight of base bitumen) was used as additive for modification. Aggregate gradation Bituminous Concrete (BC) 2 was selected and natural aggregate (Granite) was used for the research. Basic properties like penetration, softening, ductility, viscosity was found for both base binder and modified bin...
Electrospinning is a versatile tool for fabricating nanofibers of polymers. It has been widely used as scaffolding material in tissue engineering and regenerative medicine. However, it’s application in other biomedical products has not been explored much. Therefore, we have revisited the electrospinning to generate nanofibers for developing diverse micro devices having applications in biomedical field. For instance, we have developed nanofluidic devices using electrospun nanofibers for gas/so...
Observations of the solar wind near 1 AU have revealed discrete fluctuations in the proton density; some are more frequent than others, occur regularly, and are referred to as periodic density structures (PDS). Different dynamic mechanisms can cause the PDS to form locally at 1 AU or in the solar corona and be convected outward to 1 AU. Previous investigations sought to pinpoint the PDS’s coronal origin by combining in-situ solar wind measurements at 1 AU with remote imaging observations of t...
Data smoothing, which is an essential component in the field of predictive modelling, proves to be a potent tool in extracting subtle variations and enabling the prediction of various trends and patterns. This research undertakes an investigation into the diverse range of uses that smoothing techniques have, with a particular emphasis on their widespread implementation in the resolution of intricate mathematical challenges. The core of this research revolves around the utilisation of smoothin...
This paper presents a facile synthesis of a luminescent carbon dot from a plant source (Brassica oleracea) and subsequent chemical modification of carbon dots with ionic liquid. The ionic liquid-modified carbon dot (ILCD) shows intense blue luminescence, which was remarkably quenched in the presence of dichromate ions. The decrease in intensity is mainly indexed to the inner filter effect. Under optimized conditions, a broad linear range of 1−750 μM was observed for the detection of Cr(VI) wi...
Dispersion of high temperature stable nanostructured Y2O3 in superalloys shows encouraging prospects in improving the mechanical, tribological and high temperature oxidation resistance [1]. Various ceramic oxides such as Y2O3, 50Y2O3-50Al2O3, 50Y2O3-50TiO2, 50Y2O3-50Cr2O3 (in weight%) has been synthesized by mechanical alloying for 20 h in flowing argon atmosphere (flow rate : 100 ml/min). The mechanically alloyed powders are compacted in a uniaxial hydraulic press to fabricate cylindrical pe...
Exposure to vibration affects every organ in the human body, leading to resistance and potential health hazards. Hand-transmitted vibration (HTV) is an occupational hazard in industries, causing hand-arm vibration syndrome (HAVS) and vascular, neurological, and musculoskeletal symptoms. To prevent these risks, continuous monitoring is essential. A micro-electro-mechanical systems (MEMS) based accelerometer vibration monitoring device is indigenously developed for continuous monitoring. The ac...
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