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52 articles for “absorption coefficient”
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Analytical Design of 1 kW Capacity Lithium Bromide/Water Absorption Refrigeration System
Abstract: AbstractIn current era, the energy scarcity is the key concern. In this context, new alternative environment-friendly energy resources have to be explored. The researchers are focusing more on effective and efficient use of energy. The difference in demand and production of energy opens a new arena of heat recovery systems. Vapour absorption refrigeration systems (VARS) are one of the prominent heat recovery systems powered by heat, and can be powered …
Published in Journal of Alternate Energy Sources & Technologies · Vol. 8, Issue 3, 2017 · pp. 36–49 Read article
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Optical Properties of Barium Borate (BaB2O4)Compound for Current Optoelectronic Applications
Abstract: In this work,Barium borate was prepared by sol-gel synthesisdepending on different molar (0.1, 0.2, 0.3 0.4 and 0.5) molar. Barium borate is an inorganic compound, and it was useda borate of barium with a chemical formula BaB2O4 or Ba(BO2)2 It is available as hydrate or dehydrated form, as white powder or colorless crystals. The optical characteristics of the prepared samples have been investigated by UV/Vis spectrophotometer in the wavelength range …
Published in Journal of Materials & Metallurgical Engineering · Vol. 10, Issue 1, 2020 · pp. 49–58 Read article
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Simultaneous Estimation of Atenolol and Nifedipine to be incorporated in Buccal Patch: Method Development and Validation by UV-Spectrophotometric Approach
Abstract: A simple, precise, accurate and reproducible spectrophotometric method has been developed for the simultaneous estimation of Atenolol and Nifedipine. Atenolol and Nifedipine are used in combined dosage form for cardiovascular diseases. Hence, it is necessary to develop a method to analyze the two drugs simultaneously by UV-spectroscopic method. Simulated salivary fluid of pH 6.8 was used as the medium. Simultaneous equation method was developed as per ICH guidelines. The absorption …
Published in Research & Reviews: A Journal of Pharmacognosy · Vol. 2, Issue 1, 2015 · pp. 28–32 Read article
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Preparation and Characterization of PVA-MgO Nanocomposite Films
Abstract: In this work, Magnesium Oxide Nanoparticles (MgO NPs) doped with 3 g of polyvinyl alcohol (PVA) at different weight percentages (0, 2, 4, 6, and 8 wt.%) using the solvent casting method, to fabricate thin PVA-MgO nanocomposite (NC) films. These films were characterized by (i) XRD, SEM, EDX, DLS, and Zeta Potential for morphological studies, (ii) FTIR spectra and UV-Visible techniques for spectroscopic studies and (iii) DSC for thermal studies. …
Published in Nano Trends – A Journal of Nano Technology & Its Applications · Vol. 27, Issue 2, 2025 · pp. 40–62 Read article
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Development of a Durable Superhydrophobic EP/PDMS Coating Reinforced with Micro-CaCO₃ and Nano-ZnO for Enhanced Corrosion Protection and Multifunctional Performance on Carbon Steel
Abstract: Balancing exceptional multifunctional performance with mechanical robustness in micro-nano composite films remains a significant challenge for practical applications. In this work, a superhydrophobic coating reinforced with micro-CaCO₃ and nano-ZnO particles was fabricated through a versatile single-step brushing method. The optimized EP/PDMS@micro-CaCO₃/nano-ZnO coating achieved a water contact angle (WCA) of 173.54° ± 2.53° and a sliding angle (SA) of 1.50° ± 1.12°. Owing to its carefully engineered micro-nano hierarchical structure, the …
Published in Journal of Polymer & Composites · Vol. 14, Issue 1, 2026 · pp. 216–238 Read article
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Seasonal Variations of Air Quality Measures In Owerri Metropolis and Isiala Mbano, Nigeria Using MATLAB Model.
Abstract: This study reports the investigation of seasonal variation of air quality measures in Owerri Metropolis and Isiala Mbano L.G.A in Imo State. Parameters such as NO2, CO, Cl, SO2 and TPM were monitored in air samples during the dry and rainy seasons using a portable gas analyzer and particulate matter analyzer for the gases and TPM respectively. Water samples were collected from open air and were analyzed for heavy metals …
Published in Journal of Water Pollution & Purification Research · Vol. 10, Issue 2, 2023 · pp. 15–80 Read article
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Optimized Receivers for Underwater Visible Light Communication
Abstract: For uses like ocean exploration, environmental monitoring, and underwater data transfer, wireless communication under water is crucial. Conventional acoustic and radio frequency communication methods suffer from low bandwidth, high latency, and severe signal attenuation in underwater environments. With its high data rate and low propagation delay, Visible Light Communication (VLC) provides a promising alternative. In this work, an underwater VLC system is implemented using Light Emitting Diodes (LEDs) with intensity …
Published in Trends in Opto-electro & Optical Communication · Vol. 16, Issue 1, 2026 · pp. 22–33 Read article
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Optical Characteristics of Amorphous Se-Ge-Ag Thin Films
Abstract: AbstractDetailed studies on impurity dependence of the optical structural properties have been carried out on Se-Ge-Ag thin film samples prepared by thermal evaporation technique. The effect of the addition of varying amounts of silver in concentrations from 5 to 15 molar percent to Se-Ge system were analyzed systematically under the room temperature. The optical transmission and reflection spectra of these films were measured in the range of 300–900 nm. The …
Published in Trends in Opto-electro & Optical Communication · Vol. 6, Issue 3, 2016 · pp. 33–38 Read article
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In Silico Assessment of Drug like Properties of Some Thiadiazole and Oxadiazole Derivatives as HDAC Inhibitors
Abstract: Purpose: To investigate in silico the drug-like properties of some thiadiazole and oxadiazole derivatives as HDAC inhibitors. Methods: We used Chemdraw Ultra 11.0 to redraw all chemical structures. Furthermore, some applications, such as Bio-Loom for Windows - version 1.5, Molinspiration Property Calculator, and ACD/I-LAB, were used to forecast the drug-like properties of thiadiazole and oxadiazole derivatives, including relative molecular mass (MW), partition coefficient log P (cLog P), number of hydrogen …
Published in Research & Reviews: A Journal of Drug Design & Discovery · Vol. 9, Issue 2, 2022 · pp. 1–13 Read article
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Levels of Some Essential and Non-Essential Metals in Selected Cereals Marketed at Holeta City, Ethiopia
Abstract: Cereals are the most commonly and widely used sources of food in Ethiopia; hence determining the nutrient contents has a vital importance for the health of consumers. In the present study, the concentration of metals (Na, K, Fe, Cu, Mn, Zn, Ni, Cd, Co, Pb, and Ag) were determined in three cereal types (maize, sorghum and barely) using FAAS and flame photometry. The optimized wet digestion involving both, concentrated HNO3 …
Published in Research and Reviews: A Journal of Toxicology · Vol. 6, Issue 3, 2016 · pp. 19–24 Read article
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Geochemical Assessment and Modelling of Groundwater Arsenic with Land Surface Features in Ballia District using Satellite Data and GIS
Abstract: Normal 0 false false false EN-IN X-NONE X-NONE The study examines the spatial variation of arsenic (As) level in groundwater of deep aquifers with respect to surface elevation, slope, and water-table, in Ballia, the eastern most districts of Uttar Pradesh. Total 33 water samples from deep aquifer and their site locations were taken from the 17 blocks of the district during pre and post-monsoon seasons during 2011. Atomic absorption spectrophotometer …
Published in Journal of Remote Sensing & GIS · Vol. 6, Issue 2, 2015 · pp. 18–32 Read article
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Geo-chemical Analysis of Arsenic in Medium Aquifers and Its Relation with Physical Parameters: A Study of Ballia District, India
Abstract: The main objective of this paper is to assess the spatial variation of arsenic (As) in medium aquifer and to relate it with surface elevation and slope generated using Shuttle Radar Topography Mission (SRTM) satellite data and water table. Water samples were collected in both pre- and post-monsoon season in 2011. The analysis of water samples for As were carried out by using atomic absorption spectrophotometer (AAS). Total 33 water …
Published in Journal of Water Resource Engineering and Management · Vol. 2, Issue 1, 2015 · pp. 38–50 Read article