Recent trends in two-dimensional (2D) graphene have demonstrated significant potential for gas-sensing applications with significantly enhanced sensitivity even at room temperature. Herein, this study presents fabrication of distinctive gas sensor based on one-dimensional (1D) WO nanofibers decorated 2D graphene, specifically coated on copper (Cu)-based interdigitated electrodes formed by DC sputtering, which can selectively detect NO gas at room temperature. The sensor device fabricated using WO/Gr1.
View Article and Find Full Text PDFIntroduction The practice of appropriately prescribing and delivering pharmaceuticals to the right patient for the diagnosis, prevention, and treatment of diseases is referred to as "rational drug usage". Patients should receive pharmaceuticals that are appropriate for their clinical needs, given in doses that meet their needs, for long enough periods of time, and for the least amount of money possible. Minimizing drug therapy costs without sacrificing therapeutic effectiveness, avoiding unnecessary adverse medication reactions and drug-drug interactions, and improving therapeutic care while encouraging patient adherence are the main objectives of rational drug usage.
View Article and Find Full Text PDFIn the present investigation, a one-step hydrothermal approach is proposed to synthesize Li, Rb, and Inintercalated PWO (PTA) thin films. The photoelectrochemical performance of the deposited LiPWO (Li-PTA), RbPWO (Rb-PTA), and InPWO (In-PTA) photocathodes were investigated using a two-electrode cell configuration of FTO/LiPWO/(0.1 M I/I)/Graphite.
View Article and Find Full Text PDFUnderstanding the available resources and the needs of those who use them is necessary for the evaluation and allocation of water resources. The main sectors utilizing the basin water resources are agriculture, drinking water, animal husbandry, and industries, and the efficient and rational management of water resources to be distributed among those different sectors of activity is vital. This study attempts to develop an integrated water resource management system for the Dhasan River Basin (DRB) by employing a scenario analysis approach in conjunction with Water Evaluation and Planning Model (WEAP) to analyze trends in water use and anticipated demand between 2015 and 2050, simulating five possible scenarios (I, II, III, IV, and V) as for external driving factors.
View Article and Find Full Text PDFObtaining good-quality perovskite thin films is a fundamental facet that contributes to efficient inorganic perovskite solar cells. Herein, we successfully deposited ethylammonium bromide (EABr) additive-assisted high quality CsPbIBr perovskite films under ambient conditions. Detailed morphological, structural, optical, charge transport, photovoltaic performance, and stability properties have been studied.
View Article and Find Full Text PDFRealizing photoactive and thermodynamically stable all-inorganic perovskite solar cells (PSCs) remains a challenging task within halide perovskite photovoltaic (PV) research. Here, a dual strategy for realizing efficient inorganic mixed halide perovskite PV devices based on a terbium-doped solar absorber, that is, CsPb Tb I Br, is reported, which undertakes a bulk and surface passivation treatment in the form of CsPb Tb I Br quantum dots, to maintain a photoactive γ-phase under ambient conditions and with significantly improved operational stability. Devices fabricated from these air-processed perovskite thin films exhibit an air-stable power conversion efficiency (PCE) that reaches 17.
View Article and Find Full Text PDFMixed-halide CsPbIBr perovskite is promising for efficient and thermally stable all-inorganic solar cells; however, the use of conventional antisolvent methods and additives-based hole-transporting layers (HTLs) currently hampers progress. Here, we have employed hot-air-assisted perovskite deposition in ambient condition to obtain high-quality photoactive CsPbIBr perovskite films and have extended stable device operation using metal cation doping and dopant-free hole-transporting materials. Density functional theory calculations are used to study the structural and optoelectronic properties of the CsPbIBr perovskite when it is doped with metal cations Eu and In.
View Article and Find Full Text PDFType 2 diabetes mellitus (T2DM) is an increasingly common disorder characterized by chronic hyperglycemia and marked dyslipidemia. This study evaluates the effect of vitamin D supplementation alone and in combination with glimepiride in streptozotocin-induced T2DM in rats. A total of 30 Wistar albino rats of either sex weighing 150-200 g were included in the study.
View Article and Find Full Text PDFThis study was aimed to evaluate the beneficial effects of containing glucose tolerance factor (GTF) from Brewer's yeast in improving glycaemic control in diabetic rats and lowering some of the risk factors for cardiovascular disorders. The study used Wistar rats of both sexes weighing 150-200 g. Animals were randomly (n=6) divided into eight groups as normal control, normal control receiving Brewer's yeast, diabetic, Brewer's yeast receiving diabetic, Metformin-treated diabetic, and Glimepiride-treated diabetic, and two diabetic groups treated with Brewer's yeast and 50% of the Metformin and Glimepiride doses, respectively.
View Article and Find Full Text PDFACS Appl Mater Interfaces
June 2020
Inorganic cesium lead halide perovskite (CsPbX) is a promising light-harvesting material to increase the thermal stability and the device performance as compared to the organic-inorganic hybrid counterparts. However, the photoactive stability at ambient conditions is an unresolved issue. Here, we studied the influence of Nb ions' incorporation in the CsPbIBr perovskite processed at ambient conditions.
View Article and Find Full Text PDFQuadruple cation-based perovskite solar cells (PVSCs) have crossed the power conversion efficiency (PCE) of 25.2% because of their effective light harvesting ability. The perovskite materials and type of additives play a crucial role in improving the photovoltaic performance and stability.
View Article and Find Full Text PDFReplacement of conventional organic cations by thermally stable inorganic cations in perovskite solar cells (PSCs) is one of the promising approaches to make thermally stable photovoltaics. However, conventional spin-coating and solvent-engineering processes in a controlled inert atmosphere hamper the upscaling. In this study, we demonstrated a dynamic hot-air (DHA) casting process to control the morphology and stability of all-inorganic PSCs which is processed under ambient conditions and free from conventional harmful antisolvents.
View Article and Find Full Text PDFQuantum dot solar cells (QDSCs) are attractive technology for commercialization, owing to various advantages, such as cost effectiveness, and require relatively simple device fabrication processes. The properties of semiconductor quantum dots (QDs), such as band gap energy, optical absorption, and carrier transport, can be effectively tuned by modulating their size and shape. Two types of architectures of QDSCs have been developed: 1) photoelectric cells (PECs) fabricated from QDs sensitized on nanostructured TiO , and 2) photovoltaic cells fabricated from a Schottky junction and heterojunction.
View Article and Find Full Text PDFThe use of bismuth vanadate (BiVO) scheelite structures for converting solar energy into fuels and chemicals for fast growth in lab to industrial scale for large-area modules is a key challenge for further development. Herein, we demonstrate a new ultrasonic spray technique as a scalable and versatile coating technique for coating pristine and doped nanoporous BiVO thin film photoanodes directly on FTO-coated glass substrates for water splitting under visible irradiation. The successful Mo doping in BiVO lattice was confirmed by various characterization techniques such as XRD, Raman, EDS and XPS.
View Article and Find Full Text PDFHerein, we introduce a new ecofriendly naturally extracted cross-linked carbon nanoparticles as a hole transporting layer (C-HTL) prepared by an ancient Indian method for carbon based printable mesoscopic perovskite solar cells (C-PSCs), which is low-cost so far used for fully printable PSCs. The fabricated PSCs having Glass/FTO/mp-TiO/ZrO/perovskite/AV-C configuration exhibited current density ( J) of 20.50 ± 0.
View Article and Find Full Text PDFJ Colloid Interface Sci
October 2018
Symmetric supercapacitor is advanced over simple supercapacitor device due to their stability over a large potential window and high energy density. Graphene is a desired candidate for supercapacitor application since it has a high surface area, good electronic conductivity and high electro chemical stability. There is a pragmatic use of ionic liquid electrolyte for supercapacitor due to its stability over a large potential window, good ionic conductivity and eco-friendly nature.
View Article and Find Full Text PDFThe implementation of positive alternative electron transporting layers (ETLs) with excellent electronic properties is a most promising method to up-scale low-cost highly efficient perovskite solar cell (PSC) technology. The present work demonstrates the preparation of tin oxide (SnO2) nanofibers (NF) and nanobelts (NB) as an electron transporting layer (ETL) for PSCs. The smooth and uniform nanofibers and nanobelts have been prepared using an electrospinning technique followed by calcination at 600 °C.
View Article and Find Full Text PDFDye-sensitized solar cells (DSSCs) have aroused great interest and been regarded as a potential renewable energy resource among the third-generation solar cell technologies to fulfill the 21 century global energy demand. DSSCs have notable advantages such as low cost, easy fabrication process and being eco-friendly in nature. The progress of DSSCs over the last 20 years has been nearly constant due to some limitations, like poor long-term stability, narrow absorption spectrum, charge carrier transportation and collection losses and poor charge transfer mechanism for regeneration of dye molecules.
View Article and Find Full Text PDFBackground: Inappropriate or excessive use of topical corticosteroids can lead to cutaneous and systemic adverse effects which occur more commonly with the use of very potent steroids. Monitoring and analysis of the prescription practices of topical steroids can help to achieve rational prescription of these drugs.
Aim: The present study was carried out to study and analyze the pattern of prescribing topical corticosteroids among outpatients attending the dermatology clinic in a rural tertiary care and teaching hospital, Ambajogai, Maharashtra.