International Journal of Engineering Research & Technology

 Physico-Chemical Analysis of Mangrove Soil in the Machilipatnam Coastal Region, Krishna  District, Andhra Pradesh

Abstract: Mangrove soil condition was essential factor in mangrove reforestation and coastal rehabilitation projects. The present survey was made to study of the some physicochemical 

parameters of soil at five places of Machilipatnam coastal regions during the year 20012-2013 at four-seasonal intervals. This study was carried out using field determination of colour and texture, and a low-cost electrochemical approach was used for pH, salinity measurements The soil properties,

colour, texture, pH , salinity,electrical condititivity, organic carbon, macronutrients (N,P)and micronutrients(Zn,Mn,Fe,Cu,P 2 O ) are determined in mangrove ecosystem. The results showed that soils in the mangrove forest are dark black in colour, and are made up of both clay and silt, soil pH range from(8.35 to 8.79) which are alkaline. Soil salinity range from (20 to 32 ppt) decreased with increasing distance from the tidal coast electric conductivity range from (10.26 to 16.22 m.mohs/cm).Available nitrogen(29.4 to 81.2ppm),phosphorous range from(3.32 to 5.89 ppm) were maximum in monsoon and minimum in summer . The micronutrients such as zinc(0.31 to 0.64ppm), copper(0.9 to8.8 ppm) , iron (9.50 to 19.7)and manganese(17.9 to60.2 ppm) have variation in comparison to different area.

Keywords: Mangrove ecosystem, seasons,Physico-chemical parameters.

STUDY ON ANTIMICROBIAL ACTIVITY OF ZINC AND COPPERNANOPARTICLES

World Journal of Pharmaceutical Research 

STUDY ON ANTIMICROBIAL ACTIVITY OF ZINC AND COPPERNANOPARTICLES

ABSTRACT 

The aim of this study was to investigate the antimicrobial activity of ZnO and CuO nanoparticles on bacteria Gram-negative (Escherichia coli) Gram-positive bacteria (Bacillus) and fungi Aspergillus and Penicillium. Test method Well diffusion agar is used. Results, showed antimicrobial properties by inhibiting growth of bacterial strains by Zinc nanoparticles on Bacillus (0.7mm), E-coli (1.2mm) and fungal strains on Aspergillus(1.3mm), Penicillium(1.1mm). Inhibiting growth of bacterial strains by Copper nanoparticles on Bacillus (0.5mm), Ecoli  (0.8mm) and fungal strains on Aspergillus(0.8mm), Penicillium(0.7mm). It was observed that Zinc nanoparticles have more inhibition on E.Coli and Aspergillus than Copper nanoparticles  so Zinc nanoparticles have more antimicrobial activity than copper nanoparticles. 

KEYWORDS: Antimicrobial, Bacillus E-coli, Aspergillus, Penicillium, ZnO nanoparticles, CuO nanoparticles, Inhibition.

THE SOLAR COLLEGE: REDUCING CARBON FOOT PRINT WITH GREEN TECHNOLOGIES-CASE STUDY

 THE SOLAR COLLEGE: REDUCING CARBON FOOT PRINT WITH GREEN TECHNOLOGIES-CASE STUDY

ABSTRACT 

College campuses are large energy consumers and have a continuous need for electricity, in increasing amounts, all day, every day. The engineering education sector owns and operates of buildings, owns acres of land and spends a lot of money each year on energy. In recent years, it has come to light about the impact global warming has had on the environment and what causes global warming. Nonrenewable energy resources release greenhouse gases while drilling and this is one the leading causes of global warming. To combat this, renewable energy sources have been a major investment. One such source is solar energy. This captures energy from the sun and converts it into power and electricity. Since the college campus runs on nonrenewable energy sources, it is contributing to global warming. The benefits associated with the development of on-site, "green" energy systems--solar photovoltaic systems in college campus, include reduced energy costs, enhanced service reliability, and a smaller carbon footprint. By switching over to green technologies like solar energy in this college campus, not only it is beneficial to the environment by reducing 98,550 pounds  of carbon annually,  giving excess power generated by solar panels in campus to government power grid and therefore reducing 78,840 pounds of carbon emission from the power grid, which reduces global warming, dependency on unreliable sources of fossil fuels but also proven to be cost effective. 

Keywords: College Campus, Carbon Emissions, Green Technology, Nonrenewable Energy Resources, Power Grid, Renewable Energy Resources, 

International Journal of Engineering Research & Technology (IJERT) ISSN: 2278-0181

Physico-Chemical Analysis of Mangrove Soil in the Machilipatnam Coastal Region, Krishna District, Andhra Pradesh.

Abstract: Mangrove soil condition was essential factor in mangrove reforestation and coastal rehabilitation projects. The present survey was made to study of the some physicochemical 

parameters of soil at five places of Machilipatnamcoastal regions during the year 20012-2013 at four-seasonal intervals. This study was carried out using field determinationof colour and texture, and a low-cost electrochemical approach was used for pH, salinity measurements The soil properties, colour, texture, pH , salinity,electrical condititivity, organiccarbon, macronutrients(N,P)andmicronutrients(Zn,Mn,Fe,Cu,P2O) are determined in mangrove ecosystem. The results showed that soils in the mangrove forest are dark black in colour, and are made up of both clay and silt, soil pH range from(8.35 to 8.79) which are alkaline. Soil salinity range from (20 to 32 ppt) decreased with increasing distance from the tidal coast electric conductivity range from (10.26 to 16.22 .mohs/cm).Available nitrogen(29.4 to 81.2ppm),phosphorous range from(3.32 to 5.89 ppm) were maximum in monsoon and minimum in summer . The micronutrients such as zinc(0.31 to 0.64ppm), copper(0.9 to8.8 ppm) , iron (9.50 to 19.7)and manganese(17.9 to60.2 ppm) have variation in comparison to different areas  

Keywords:Mangrove ecosystem, seasons,Physico-chemical parameters.