Journal of Advanced Applied Scientific Research (JOAASR)
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A study on physico- chemical status and spatial distribution of pollutants in ground water proximity to Uyyakondan channel using modeling software - GIS
Get PDFTiruchirappalli is one of the most important industrial cities in Tamil Nadu and situated on the river bank of the Cauvery. Uyyakondan channel is about 65.5 km long, running through the heart of Tiruchirappalli as a tributary of river Cauvery. The channel water is used for domestic and irrigation purposes. A total of 40 ground water and 5 surface water samples were collected from in and around Uyyakondan channel. The water samples were analyzed for physico-chemical parameters like pH, EC, TDS, TH, DO, COD, BOD, Cl, PO4 and K as prescribed by APHA, using standard techniques and compared with WHO (2009). The ground water quality information maps of the entire study area were prepared by using software GIS for all the above parameters. The results obtained by this study will be helpful for identifying the spatial distribution of pollutant in the study area
Statistical study on physicochemical characteristics of groundwater in and around panjapur area near korai river, Tamil Nadu, India
Get PDFGroundwater is the most precious gift of nature to living beings, particularly to the mankind and is essential for life. In recent years, rapid development has created an increased demand for drinking water, which is increasingly being fulfilled by groundwater abstraction. The groundwater samples collected from a panjapur area near korai river Tiruchirappalli district Tamil Nadu India. Groundwater samples collected seasonal variation Pre monsoon (May), Monsoon(August), and Post monsoon (November) during the Year 2014. Ten groundwater samples analyzed for major physicochemical parameters such as pH, Electrical Conductivity, Total DissolvedSolids, Total Hardness, Dissolved Oxygen, Biological Oxygen Demand, Chemical Oxygen Demand, Bicarbonate, Calcium,Magnesium, Sodium,Potassium, Sulphate,Chloride and Nitrate, in order to understand the different geochemical processes affecting the groundwater quality. The analytical data were interpreted using WQI. The Calculated WQI value is (101.6). The analytical results indicate the majority of the groundwater samples are unsuitable for drinking purposes. The typical sewage comprising of domestic and other waste is discharged directly into the open land without any proper treatment will cause contamination. This contamination poses serious health impacts in the local residents.The correlation and regression provide an excellent tool for the prediction of parameter values within a reasonable degree of accuracy
Electrochemical study of 18 carat gold with artificial saliva in presence of aceclofenac 100 Mg tablet.
Get PDFThe electrochemical behavior of 18 carat gold in the presence of artificial saliva with and without Aceclofenac100 mg Tablet has been evaluated by AC impedance spectra and Polarization studies. Usually orthodontic wires made of many metals and alloys. After treatment of many food items such as glucose, rasam, sambar,buttermilk etc are taken orally. Many tablets are also orally taken. Aceclofenac100 mg is non-steroidal and anti-inflammatory drug. It is used to treat pain, and inflammation. In the oral environment these orthodontic wires undergo many types of corrosion. In the present study the corrosion behavior of 18 carat gold orthodontic wire in presence of artificial Saliva with a tablet namely, Aceclofenac100 mg orally taken has been investigated by AC impedance spectra and polarization study. Nyquist plots and Bode plots have been drawn. Charge transfer resistance (Rt), double layer capacitance (Cdl) and Impedance values have been calculated. It is observed from electrochemical studies, the corrosion resistance of 18 carat gold electrode increases in presence of artificial saliva with Aceclofenac100 mg. So, people having orthodontic wire made of 18 carat gold need not hesitate to take Aceclofenac100 mg tablet
Optimization and characterization of green synthesized silver nanoparticles and its inhibitory activity against biofilm forming bacterial pathogens
Get PDFIn the present study, antibacterial activity of silver nanoparticles synthesized from entophytic fungi extracts were analysed against biofilm forming bacteria include the Staphylococcus aureus, Escherichia coli, Klebsiella pneumoniae, Proteus mirabilis, and Pseudomonas aeruginosa isolated from clinical specimens. Therefore, we tried to establish a combination of medicinal and nanotechnology possibly with the field of medicine for the development of antibacterial agents against these strains. The nanoparticles were characterized by UV–visible spectroscopy, the presented and capped molecules of proteins with nanoparticles was confirmed by Fourier transform infrared spectroscopy (FTIR), X-ray diffraction (XRD).
UV–visible studies display an absorption band at 420 nm due to surface Plasmon resonance (SPR) of the silver nanoparticles. The intra cellular synthesized silver nanoparticles (Ag NPs) size 15-35 nm was determination of X-ray diffraction (XRD) crystal calculation, antimicrobial activity higher than the standard antibiotic. The nanoparticle treated with isolated bacteria as result macromolecule of proteins denatures and oozing out the cells and measure the Bradford method. The nanoparticle treated bacterial cells were compared to negative control more amount of protein released. The nano size establishing the silver nanoparticles directly bind with DNA of the pathogenic bacterial strains most important to higher antimicrobial activity
A fast biem algorithm to evaluate seismic ground response in 2d elastic time domain
Get PDFSince the topography and surface irregularities of the terrain have a significant effect on the seismic response of the earth's surface, the numerical analysis using boundary element method in elastodynamics, which leads to a significant increase in the number of DOF and stiffness matrix dimension, as well as the sparse and unsymmetrical structure of stiffness matrix, indicates the inefficiency of the conventional method. This paper presents a fast boundary element algorithm in seismic analysis of two-dimensional elastic media for the first time. In the proposed method, instead of the usual node-to-node, a method of cell-to-cell relation method is implemented by hierarchy tree structure. In addition, the Plane Wave Time Domain algorithm and the Iterative method has been used to solve a system of equations which increases the speed of network convergence, especially in high degrees of freedom that has not been used in the study of the seismic waves’ response yet. Nowadays, this new algorithm adopts for investigating the response wave fields of electrical, magnet [1], acoustic and thermal conductivity which are discussed in details in various articles and books
Biosynthesis of silver nanoparticles derived Acorus Calamus rhizome extract and their biomedical application
Get PDFThe silver nanoparticles (Ag NPs) were derived from Acorus calamus (A. calamus) rhizome extract using different temperature. The absorbance centered at 439 nm, which was corresponds to the wavelength of the surface plasmon resonance of Ag NPs at 95 ◦C. From FESEM and TEM image showed, the Ag NPs were exhibited spherical structure. Elemental compositions were identified by EDAX analysis. The synthesized Ag NPs, functional groups were identified by the FTIR spectra. The antibacterial studies performed against a set of bacterial strains showed that the Ag NPs possessed a greater antibacterial effect than the Plant extract (PE) and silver nitrate. In-vitro cytotoxic effect of green synthesized A. calamus rhizome extract derived Ag NPs tested against MG 63, MCF-7 and HeLa cell lines
An eco-friendly top down approach to nutrient incorporated electrospun seed coating for superior germination potential.
Get PDFIn this work we have integrated the top down approach of electrospinning with reduction method of synthesising nanoparticles to form synthesised cobalt nanoparticles/urea incorporated Polyvinylpyrrolidone nanofibers. The advantages of the electrospun ultrathin fibrous polyvinylpyrrolidone (PVP) was applied to agriculture to improve crop yield. The fibers formed were characterised by microscopic, spectroscopic and thermal analysis. These fibers namely polymer PVP incorporated with urea, Co NPs separately and in combination were coated on cowpea seeds (Vigna unguiculata) to evaluate their effect on germination characteristics. The results obtained confirm that this seed coat would help in better protection of seed and lead to greater crop yield. On performing one way ANOVA, the difference in treatment had a significant effect on the germination parameters. The seed coatings containing both urea and Co NPs showed good germination rate among the samples. From the germination parameters the seed coating can be graded as follows: Uncoated < PVP < Co NPs incorporated PVP ≤ Urea incorporated PVP < Urea/ Co NPs incorporated PVP. The conductivity measurements of the steep water obtained by soaking the coated seeds in water at room temperature for a period of 24 hours also confirmed the effectiveness of the seed coatings. On addition of Co NPs, the utility of urea can be minimised for a good crop establishment. The dispersion of the cobalt nanoparticles (Co NPs) and urea into the polymer coating and the subsequent controlled release of the nutrients to the seed during germination has been achieved using the electrospinning process. We conclude that the use of biocompatible polymer seed coat, along with the integrated nutrients, forms an environment friendly, germination enhancing and protective coating for the seed leading to a sustainable agricultural development
Microbial fuel cells used in wastewater treatment
Get PDFEnvironmental issues associated with water sanitation are not confined to developing countries alone but are the most basic human and environmental necessities all over the world. Wastewater sources are major causes for environmental pollution in surface and ground water bodies. Current wastewater treatment technologies are not sustainable to meet the ever growing water sanitation needs due to rapid industrialization and population growth, simply because they are energy and cost intensive leaving latitude for development of technologies that are energy conservative or energy yielding. For the present and future context, microbial fuel cells technology may present a sustainable and an environmentally friendly route to meet the water sanitation needs. Microbial fuel cell based wastewater systems employ bio-electrochemical catalytic activity of microbes to produce electricity from the oxidation of organic, and in some cases inorganic, substrates present in urban sewage, agricultural, dairy, food and industrial wastewaters. It provides an overview of current energy needs for wastewater treatment and potential energy recovery options followed by a comprehensive review of the principles of wastewater treatment, substrate utilization (organic removal), recent process developments, nutrient and metal removal capacities in microbial fuel cells. Several issues related to process performance, organic removal capacities and potential environmental impacts were discussed in detai
Eco-friendly fireworks for atom bomb (Local name of cracker bomb)
Get PDFMost of fireworks composition contains sulphur as a fuel, during combustion reaction with oxidizer it gives sulphur dioxide (SO2) gas. SO2 gas produces environmental pollution; due to that, less quantity of sulphur to be used in fireworks composition otherwise should be avoided fully. In the atom bomb or crackers formulation the roll of sulphur is most important due to it speed up the reaction and at the same time heat produced by this composition (KNO3,Ba(NO3)2, Al and Sulphur) is less when compared to without sulphur. Even though the sulphur containing formulations are desired by the most of fireworks formulators due to speed of reaction. Environmental concern in this proposed work the amount of sulphur to be reduced/without sulphur for atom bomb/cracker formulations
Identification of bioactive compounds from the methanolic leaf extract of Gymenema Sylvestre
Get PDFThis study was aimed to analysis of potential bioactive phytoconstituents from the methanolic leaf extract of Gymnema sylvestre. Qualitative phytochemical screening of this plant confirms the presence of various secondary metabolites like steroids, alkaloids, saponins, tannins, ester, phenol and flavonoids. Gas chromatography mass spectroscopy analysis (GC-MS) also confirmed the presence of various phytochemical compounds with different chemical structure