415 research outputs found
Towards Studies on Current Scenario in Export and Import of Silk Goods in India
The present study an endeavor export and import silk goods data collect and analysis of annual compound growth rates. China is the biggest consumer of silk in the world next to India second consumer of raw silk and silk fabrics. The study area covers whole country. The analysis was carried out for the period from export and import of silk goods during 1985 to 2017. Compound growth rate of quantity of export silk commodities for significant was 31.66 per cent during the period I (1985-86 to 1987-88). For overall period (1985 to 2016) moderately significant growth in quantity (2.44%), but the growth of value (10.02%) was significant. In import, highest CGR was 29.39 per cent in quantity and 32.02 per cent in value during the period IV (1997-98 to 2001-02). Overall Period (1985-6 to 2016-17) revealed that, highly CGR of quantity and value. In import, the significant and CGR was Uzbekistan, Japan, Korea RP and others during the period II (2007 to 2011). The overall period (1980-81 to 2016-17) there was a negatively significant in the country like China, Brazil and Japan, while, Uzbekistan, Korea RP and Others. The study finally indicated, the significant growth of export and import in all the country viz. USA, HK, UK, UAE, Germany, Spain and others during from 1985-86 to 2016-17. The overall period (1985-86 to 2016-17), growth rate was found in significant like scarves, Dress materials, and others (spun silk)
Bactericidal activity of biosynthesized silver nanoparticles against human pathogenic bacteria
Green synthesis is an attractive and eco-friendly approach to generate potent antibacterial silver nanoparticles (Ag-NPs). Such particles have long been used to fight bacteria and represent a
promising tool to overcome the emergence of antibiotic-resistant bacteria. In this study, green synthesis of Ag-NPs was attempted using plant extracts of Aloe vera, Portulaca oleracea and Cynodon dactylon. The identity and size of Ag-NPs was characterized by ultraviolet–visible spectrophotometer and scanning electron microscopy. Monodispersed Ag-NPs were produced with a range of different sizes based on the plant extract used. The bactericidal activity of Ag-NPs against a number of human pathogenic bacteria was determined using the disc diffusion method. The results showed that Gram positive bacteria were more susceptible than Gram negative ones to these antibacterial agents. The minimum inhibitory concentration was determined using the 96-well plate method. Finally, the mechanism by which Ag-NPs affect bacteria was investigated by SEM analysis. Bacteria treated with Ag-NPs were seen to undergo shrinkage and to lose their viability. This study provides evidence for a cheap and effective method for synthesizing potent bactericidal Ag-NPs and demonstrates their effectiveness against human pathogenic bacteria
Perovskite solar cells: progress and advancements
Organic–inorganic hybrid perovskite solar cells (PSCs) have emerged as a new class of optoelectronic semiconductors that revolutionized the photovoltaic research in the recent years. The perovskite solar cells present numerous advantages include unique electronic structure, bandgap tunability, superior charge transport properties, facile processing, and low cost. Perovskite solar cells have demonstrated unprecedented progress in efficiency and its architecture evolved over the period of the last 5–6 years, achieving a high power conversion efficiency of about 22% in 2016, serving as a promising candidate with the potential to replace the existing commercial PV technologies. This review discusses the progress of perovskite solar cells focusing on aspects such as superior electronic properties and unique features of halide perovskite materials compared to that of conventional light absorbing semiconductors. The review also presents a brief overview of device architectures, fabrication methods, and interface engineering of perovskite solar cells. The last part of the review elaborates on the major challenges such as hysteresis and stability issues in perovskite solar cells that serve as a bottleneck for successful commercialization of this promising PV technology
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Current Scenario of Sericulture Industry in Traditional Silk Producing States of India
The study concerned about the growth rate of mulberry area, production and productivity and cocoon and raw silk production and productivity five major traditional sates (Tamil Nadu, Karnataka, West Bengal, Andhra Pradesh, Jammu Kashmir and West Bengal) in India during 1980-81 to 2016-17. In Tamil Nadu, Compared with all the seven periods the highest significant compound growth observed in mulberry area and production was 17.50 per cent, 21.02 per cent during the period IV (1998-99 to 2001-02) and mulberry productivity 2.63 per cent since improved mulberry varieties like S36 and MR2 was released during that period II (1988-89 to 1997-98). Overall period (1980-81 to 2016-17), the cocoon productivity (2.67%) was positively significant in Tamil Nadu. There was a positively significant growth rate of cocoon production and productivity in Karnataka, Andhra Pradesh and West Bengal. Even though there was negative significant growth in productivity (-7.62%), but the growth of production (0.51%) was non-significant in Jammu Kashmir. There is significant positive growth of production (2.33%) and productivity (2.96%) in India. In Tamil Nadu, The growth rates of raw silk production (2.17%) and productivity (5.25%) was found highly significant during the overall Period (1980-81 to 2016-17). There was a highly significant growth rate of raw silk production and productivity in Karnataka, Andhra Pradesh, West Bengal and for India as a whole. In Jammu Kashmir; the growth rates of cocoon production alone (4.14%) were significant
A Neural Radiance Field-Based Architecture for Intelligent Multilayered View Synthesis
A mobile ad hoc network is made up of a number of wireless portable nodes that spontaneously come together en route for establish a transitory network with no need for any central management. A mobile ad hoc network (MANET) is made up of a sizable and reasonably dense community of mobile nodes that travel across any terrain and rely solely on wireless interfaces for communication, not on any well before centralized management. Furthermore, routing be supposed to offer a method for instantly delivering data across a network between any two nodes. Finding the best packet routing from across infrastructure is the major issue, though. The proposed protocol's major goal is to identify the least-expensive nominal capacity acquisition that assures the transportation of realistic transport that ensures its durability in the event of any node failure. This study suggests the Optimized Route Selection via Red Imported Fire Ants (RIFA) Strategy as a way to improve on-demand source routing systems. Predicting Route Failure and energy Utilization is used to pick the path during the routing phase. Proposed work assess the results of the comparisons based on performance parameters like as energy usage, packet delivery rate (PDR), and end-to-end (E2E) delay. The outcome demonstrates that the proposed strategy is preferable and increases network lifetime while lowering node energy consumption and typical E2E delay under the majority of network performance measures and factors
PHYTOCHEMICAL SCREENING, ANTIOXIDANT AND ANTIBACTERIAL ACTIVITIES OF MILLINGTONIA HORTENSIS (L)
Objective: Millingtonia hortensis Linn (Bignoniaceae) is commonly known as cork tree and Akash neem. Aim of studies to determine the antioxidant activity and antibacterial activity.Methods: The antioxidant activity of different solvent extracts were measured by chemical analyses involving the assay of 1,1-diphenyl-2-picryhydrazyl (DPPH) radical scavenging activity and super oxide radical scavenging activity.Results: Phytochemicals (secondary metabolites) screening of methanol, chloroform, ethanol, petroleum ether, aqueous leaf extracts revealed the presence of carbohydrates, tannins, saponins, flavonoids, alkaloids, betacyanins, phenols and coumarins.Conclusion: The presence of these phytochemicals and antioxidant capacity support the use of this plant as an antibacterial agent against the group of micro organisms tested.Â
Influence of UV Treatment on the Food Safety Status of a Model Aquaponic System
Few microbial studies in aquaponics, a growing trend in food production, have been conducted to determine food safety status. The aim of this study was to determine the food safety status and the effectiveness of ultraviolet treatment (15 W, luminous flux of 900 lm) as a food safety intervention in reducing the microbial loads of the water system in a model aquaponic unit growing lettuce, basil, and barramundi (Australian Sea Bass). Sweet basil, bibb lettuce, water samples, and fish swabs were collected throughout the 118-day production period, and microbial analysis was conducted in triplicate for the presence of E. coli O157:H7, Salmonella spp., and the prevalence of aerobic plate counts (APC), coliforms, and fecal coliforms in these systems. Absence of foodborne pathogens was confirmed using ELISA technology and enumeration through petrifilms (coliform/E. coli). A significant increase was observed in aerobic plate counts over the trial period (1 to 3 log10 CFU·mL−1) in the presence and absence of UV (p \u3e 0.05). Ultraviolet treatment did not significantly reduce the APC or coliform counts when compared to the control system samples. Future work should focus on improving the unit design, the evaluation of bio-solid filtration, and other food safety interventions
Effect of nano-particles on the combustion and emission characteristics of a dual fuel engine operated on biodiesel-producer gas combination
In this experimental study, efforts were undertaken to augment the overall efficiency of a dual-fuel engine. This present study was conducted in three steps. In the initial phase, Aluminium oxyhydroxide (AlO(OH)) was synthesized and analyzed using UV visible spectroscopy, XRD (X-ray diffraction), Thermogravimetric (TG) analysis, and Differential Scanning Calorimeter (DSC). In the second part of the study, the impact of AlO(OH) NP dosage on the performance of a producer gas-powered diesel engine was investigated. To optimize adequate AlO(OH) NPs addition, three working fluids are prepared by dissolving NPs in dairy scum oil methyl ester (DiSOME) biodiesel ranging from 20 to 60 ppm and varied in steps of 20. In the next phase, the present study examined the effect of 60 ppm of various NPs, including multi-walled carbon nanotubes (MWCNT), Aluminum oxide (Al2O3), and AlO(OH) on the combustion and emission characteristics of a 1-cylinder 4-stroke direct injection diesel engine operating in dual fuel mode using a combination of DiSOME and producer gas. The study concluded that DiSOME-PG operation with 60 ppm AlO(OH) and without nano-addition resulted in decreased BTE by 2.9 and 14.6 respectively compared to diesel-supported dual fuel operation. To the extent that exhaust levels are concerned, AlO(OH) addition to the DiSOME-PG combination lowers hydrocarbon (HC) and carbon monoxide (CO) emissions than identical fuel amalgamation without AlO(OH) NP. It is noticed that the retarded combustion related to the DiSOME-producer gas mixture can be improved with NP addition. The DiSOME-producer gas functioning with NPs addition is the individuality of this current effort
Green fabrication of stable lead-free bismuth based perovskite solar cells using a non-toxic solvent
The very fast evolution in certified efficiency of lead-halide organic-inorganic perovskite solar cells to 24.2%, on par and even surpassing the record for polycrystalline silicon solar cells (22.3%), bears the promise of a new era in photovoltaics and revitalisation of thin film solar cell technologies. However, the presence of toxic lead and particularly toxic solvents during the fabrication process makes large-scale manufacturing of perovskite solar cells challenging due to legislation and environment issues. For lead-free alternatives, non-toxic tin, antimony and bismuth based solar cells still rely on up-scalable fabrication processes that employ toxic solvents. Here we employ non-toxic methyl-acetate solution processed (CH3NH3)3Bi2I9 films to fabricate lead-free, bismuth based (CH3NH3)3Bi2I9 perovskites on mesoporous TiO2 architecture using a sustainable route. Optoelectronic characterization, X-ray diffraction and electron microscopy show that the route can provide homogeneous and good quality (CH3NH3)3Bi2I9 films. Fine-tuning the perovskite/hole transport layer interface by the use of conventional 2,2′,7,7′-tetrakis (N,N′-di-p-methoxyphenylamino)−9,9′-spirbiuorene, known as Spiro-OMeTAD, and poly(3-hexylthiophene-2,5-diyl - P3HT as hole transporting materials, yields power conversion efficiencies of 1.12% and 1.62% under 1 sun illumination. Devices prepared using poly(3-hexylthiophene-2,5-diyl hole transport layer shown 300 h of stability under continuous 1 sun illumination, without the use of an ultra violet-filter
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