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Synthesis, characterization, antimicrobial and antitubercular activity of some new pyrimidine derivatives
Get PDFPyrimidine heterocycles are proven to be biologically active heterocycles, found in many biological systems, displaying a broad spectrum of biological activities including anticancer, anxiolytic, antioxidant, antiviral, antifungal, anticonvulsant, antidepressant and antibacterial activities. New substituted 2-oxopyrimidines have been synthesized from the chalcones linked via indane-1,3-dione moity by the methods discussed in experimental section. We have synthesized some new 2-[6-(substituted phenyl)-2-oxo-1,2,5,6-tetrahydropyrimidin-4-yl]-indane-1,3-dione by reacting chalcones (step-1 compounds have been reported by us) with urea
Multi-functional Behaviour of Eu2O3 Embedded 3D Mesoporous Silica Template KIT-6
Get PDFRare-earth (RE) oxide embedded ordered mesoporous silica have been successfully prepared via a solution impregnation method. The structure and physical property of the nanocomposites (NCs) were studied by low-angle X-ray diffraction, Transmission Electron Microscopy (TEM), Photoluminescence (PL) and magnetic measurement. The NCs exhibited the room temperature transition emission due to the presence of Eu3+ ions. Also the NC system showed a room temperature weak ferromagnetism due to the large oxygen vacancy present in the system. Photoluminescence, magnetic property and large surface area, make these NCs ideal multi-functional materials, which will have potential applications in the field of bio-medicine and drug-delivery. These kinds of nanocomposites are promising candidates for fabrication of various environment friendly smart devices
Cereal based traditional beverage of tella residue (attela) as a green organic pollutant sorbent for methylene blue dye removal: Equilibrium, kinetics and thermodynamic studies
Get PDFDyes are one the foremost hazardous pollutants that affects bio life including the flora and fauna and removing of those pollutants from contaminated environment are remarkable activities within the scientific community. In this respect, the current study is focused on preparation of physiochemical activated cereals based tella residue bio adsorbent for basic blue dye (MB) removal from aqueous environment. Different analytical methods have been utilized to assess the thermal stability, surface area, surface morphology, pore size, pore volume, surface functional group, and a few proximate analyses of the prepared bio adsorbents. The SEM and BET results of the adsorbents reveals physiochemical activation process assists for the formation of visible pores, cracks, irregular shape, and better surface area (51.32 m2/g for RTR and 565m2/g for ATR) respectively. The removal efficiencies of MB by RTR and ATR in an exceedingly batch experiment were 88.4s and 97.2 % at situation of pH (8); adsorbent dosage (0.8 for RTR and 0.6 for ATR), agitation speed (300 rpm), dye concentration (10 mg/L), temperature (298oK) and contact time (100 minute) respectively. The kinetics and equilibrium result of dye adsorption process well described by Pseudo 2nd order kinetic and Langmuir isotherm model respectively. The thermodynamic finding result shows the spontaneous and endothermic nature of the sorption process. The probable adsorption mechanism of MB dye on the prepared bio adsorbents surface may be assigned mainly through chemisorption. The results of this study show, the current adsorbents promise an alternate green rout for treatment dye contaminated wastewaters
Electrochemical oxidation of textile effluents and further treatment by coupled system electrooxidation using Prosopis cineraria
Get PDFThis paper deals with study of physico-chemical analysis of waste water contaminated by effluents discharge from textile industries of Sanganer town, Jaipur and their treatment using electrochemical method of oxidation using boron-doped diamond electrodes and coupled system of electrooxidation with Prosopis cineraria. The degradation of pollutants has been confirmed by estimation of removal efficiencies of various parameters like turbidity, colour, chemical oxygen demand (COD) and biological oxygen demand (BOD) before and after treatment of textile effluents contaminated water
Effect of ultrasonication and enzyme activity on dye uptake of cationised cotton fabric
Get PDFTo eliminate the usage of salt, salt-free reactive dyeing using CHPTAC (3-Chloro-2-hydroxypropyl trimethylammonium chloride) has been proposed. Studies have shown promising results, such as better dye shade attainment and less effluent load compared to conventional methods. In this work, to improve the effective utilisation of CHPTAC, the cotton fabric has been treated with cellulase enzyme and the application of CHPTAC is carried out using the ultrasonication technique. The samples are then characterised for colour parameters and it is found that the enzymatic treatment and ultrasonication lead to improve the dye uptake, as the interaction of CHPTAC with the fabric becomes better.
Thermal comfort properties of knitted fabrics produced from bamboo/polyester core-spun yarns
Get PDFThe influence of polyester content, twist and loop length on the comfort properties of single jersey knitted fabrics produced from 100% bamboo, 80:20 bamboo/polyester and 60:40 bamboo/polyester core-spun yarns has been studied. Comfort properties, such as air permeability, moisture vapour transmission, thermal conductivity and thermal resistance properties have been analyzed with three different twist levels and loop lengths. Box–Behnken, a three level three factorial design software, has been used to study the interactive effect of core-sheath ratio, twist and loop length on the comfort properties of single jersey knitted fabrics, response surface equations are derived and the design variables are optimized. It is found that the increase in bamboo content in the core yarns having high twist and loop length increases the moisture vapour transmission and thermal conductivity of the knitted fabrics. The air permeability and thermal resistance of the knitted fabrics are found to be higher as the polyester component is increased. High twist and loop length increase the thermal comfort properties of knitted fabrics
Investigation of the Trail Environment to Enhance the Efficiency of the Solar Cell through Pre-Installation Study
Get PDFThis research investigates the performance of solar photovoltaic modules in real-world climatic conditions at various locations in India using MATLAB simulation. The study utilizes a single-diode model and a detailed simulation of a solar PV module to analyze the P-V and I-V characteristics of the module on a monthly basis. The month-wise power output is evaluated in relation to temperature and solar irradiance under various weather conditions. To model the PV module, the input parameters such as solar irradiance and temperature were first determined, and an appropriate PV panel model was selected based on the complexity and accuracy required. The PV panel model was then set up in MATLAB and run to generate the output data. The simulated results were compared to the verified data sheet of the JAM60S10-350/MR module, demonstrating that the simulation accurately represents the PV solar module's performance curve. The study aims to identify the most efficient locations for installing solar PV modules for optimal efficiency. Different models such as single-diode, two-diode, and PV system model can be used to model PV panels depending on the specific conditions being simulated and the level of accuracy required
Performance Enhancement of MANET based on Cross-layered Reconfigurable Hierarchical Routing Protocol
Get PDFHigh speed data communication is the demanding factor in both commercial and defence applications. Several algorithms are proposed to support the high-speed data exchange while ensuring the quality, performance and reliability. However, there is still a gap, citing various compatibility issues with variety of transceiver technologies. This paper proposes a novel algorithm for enhancing the performance of mobile ad-hoc networks using Free-Space Optics (FSO). The FSO has the natural ability to the interference while capable of large bandwidth and excellent compatibility. Low power and adaptability are the features with which it has contributed to the latest technologies like storage area network, wireless area network etc. The proposed work uses optical spheres with a multi-transceiver system and a cross-layered reconfigurable routing mechanism. Parameters such as delay, residual energy, throughput, and drop are verified for the Crosslayered Reconfigurable Hierarchical Routing Optical Sphere (CRHROS) protocol for varying numbers of optical transceivers. The proposed work also compares the performance of two traffic sources, Constant Bit Rate (CBR) and Variable Bit Rate (VBR), for the proposed algorithm
3D-QSAR, design, docking and in silico ADME studies of indole-glyoxylamides and indolyl oxoacetamides as potential pancreatic lipase inhibitors
Get PDFThe versatility of indole heterocyclic led to the understanding of their structural requirements to develop new potential derivatives. The indole derivatives estimated to be active against pancreatic lipase have been chosen to develop 3D-QSAR field and atom-based models, validated using the Schrodinger suite. Designing of new agents through QSAR based predictions and performing docking on these compounds helped in defining the binding pattern and pharmacophoric features like π–π stacking interactions, hydrogen bonding, and π-cation interactions with the amino acid residues. The protein-ligand complex displayed good binding energies. In silico ADMET properties have been generated using the Quick-prop module of the Schrodinger suite. The 3D-QSAR model is found to be statistically significant and evaluated using various parameters like R2, R2CV, stability, F-value, P-value, RMSE, Q2, and Pearson-r by PLS factor of 4. The field fractions and contour maps along with their visualizations have helped in inferring the essential nature and type of substituent that should be incorporated for a compound to display potent pancreatic lipase inhibitory activity. These deductions and evaluations of the synthesized compounds through the generation of models could be further utilized for designing new molecules rationally
Synthesis and evaluation of mosquito larvicidal activity of pongamol and lanceolatin B
Get PDFPongamol and lanceolatin B are two well known active components present in different parts of karanj (Pongamia glabra) tree. However, the level of their content is very low and structural similarity with karanjin (major furanoflavonoid) makes their isolation in pure form difficult. This has compelled chemist to synthesize pongamol and lanceolatin B from simpler raw materials. The present research work is one such attempt to synthesize pongamol and lanceolatin B from 4-hydroxy-2-methoxybenzaldehyde in an alternate and efficient pathway. Structural confirmation of synthesized pongamol and lanceolatin B are based on NMR (1H and 13C) and mass and purity by HPLC. X-ray crystallographic study of synthesized lanceolatin B is also carried for the first time to confirm its structure. Both these compounds are evaluated for mosquito larvicidal activity against early 4th instar larvae of Culex quinquefasciatus strain for 24 h. Both these compounds exhibited very good mosquito larvicidal activity. Activity of pongamol (LC50 = 327.4 ± 108 ppm) is found to be better than lanceolatin B (LC50 = 897.6 ± 140 ppm)