Umesh Saxena

Water is an essential natural resource for sustaining life and environment but over the last few decades the water quality is deteriorating due to it's over exploitation. Water quality is essential parameter to be studied when the overall focus is sustainable development keeping mankind at focal point. Groundwater is the major source of drinking water in rural as well as in urban areas and over 94% of the drinking water demand is met by groundwater. Fluoride is one of the critical chemical parameter, which influences the quality of ground water. Excess intake of fluoride through drinking water causes fluorosis on human beings in many states of India, including Rajasthan. The study was carried out to assess the fluoride contamination status of ground water in Bassi tehsil of district Jaipur, Rajasthan, India. For this purpose, 50 water samples collected from hand pumps, open wells and bore wells of villages of study area were analysed for fluoride content. Fluoride concentration...

The present study was intended to calculate the water quality index (WQI) of Bassi Tehsil of district Jaipur, Rajasthan, India in order to assess its suitability for drinking purpose. For this ground water samples from 71 sampling sites of 50 villages of study area were collected from tube wells and hand pumps of varying depths in pre and post monsoon seasons and analyzed for ten physico-chemical parameters namely pH, Total Alkalinity, Total Hardness, Calcium, Magnesium, Chloride, Nitrate, Fluoride, Total Dissolved Solid and Electrical Conductivity. Analysis of results showed that almost all parameters were exceeding the permissible limits prescribed by BIS, ICMR and WHO. Assessment of water quality index (WQI) showed remarkable variation of water quality as WQI values ranged from 13.53 to 1052.2 in premonsoon and 25.72 to 1024.6 in post monsoon season. The study also revealed that drinking water of Bassi tehsil is not potable and there is an instant need to take ameliorative steps ...

The present study deals with statistical analysis of Physico-chemical parameters of ground water quality in Bassi Tehsil of District Jaipur, Rajasthan, India. For this ground water samples from 71 sampling sites of 50 villages of study area were collected from tube wells and hand pumps of varying depths in pre and post monsoon seasons and analyzed for ten physico-chemical parameters namely pH, Total Alkalinity, Total Hardness, Calcium, Magnesium, Chloride, Nitrate, Fluoride, Total Dissolved Solid and Electrical Conductivity. Analysis of results showed that almost all parameters were exceeding the permissible limits prescribed by BIS, ICMR and WHO. The quality of ground water has been assessed by calculating correlation coefficient (r) for every pair of parameters. Regression equations were also being formulated for pairs having highly significant (0.8

The aim of the study was to isolate the PHB producing strains from soil sample. Fifty isolates were collected from 3 different zones in and around Coimbatore district about 18 isolates were collected from Western Ghats near Madukkarai, Coimbatore district. About 20 isolates were collected from Agro waste storage compost at Kulathupalayam, Coimbatore district. About 12 isolates were collected from Agriculture University, Coimbatore. The effective PHB producing strains were screened out by qualitative and quantitative screening methods. The cheap substrates such as paper mill effluent and diary effluent are utilized for the PHB production. The higher concentrations of effluent yield the higher production rate.

Water is an essential natural resource for sustaining life and environment but over the last few decades the water quality has been deteriorated due to its over exploitation. Water quality is essential parameter to be studied when the overall focus is sustainable development keeping mankind at focal point. Groundwater is the major source of drinking water in rural as well as in urban areas and over 94% of the drinking water demand is met by groundwater. The study has been carried out to assess the ground water quality and its suitability for drinking purpose in most rural habitations of Bassi tehsil of Jaipur district, Rajasthan, India. For this purpose, 50 water samples being collected from hand pumps, open wells and bore wells of villages of study area were analysed for different physicochemical parameters such as pH, electrical conductivity, total alkalinity, total hardness, calcium hardness, magnesium hardness, chloride, nitrate, fluoride and total dissolved solids. pH value in the study area found from 6.3 to 8.7. EC ranges from 1100-16000 μmhos/cm and total alkalinity between 70 to 990 mg/L. Total hardness ranged from 30 to 980 mg/L and calcium hardness from 10 to 480 mg/L. Magnesium hardness varied from 20 to 500 mg/L and chloride from 20 to 3620 mg/L. Values of nitrate concentration varied from 9 to 224 mg/L and fluoride from 0.28 to 11.5 mg/L while value of TDS ranges from 770 to 11200 mg/L. The study reveals that almost all parameters were exceeding the permissible limits. As per the desirable and maximum permissible limit for fluoride and nitrate in drinking water, determined by WHO, BIS and ICMR standards, 64% and 42% of groundwater sources are unfit for drinking purposes respectively. Due to the higher fluoride level in drinking water, the several cases of dental and skeletal fluorosis have appeared at alarming rate in this region. After evaluating the data of this study, it is concluded that drinking water of Bassi tehsil is not potable and there is a

A study of the water quality condition of Tonk district carried out to asses risk to human health. It was found that ground water of Tonk district is contaminated with fluoride by naturally fluoride rich rock salt system. Physicochemical analysis has main consideration to assess the quality of water for its best utilization like drinking, irrigation. The result of this study helps in enhancing awareness of health hazards of contaminated water.

This paper provides the actual status of fluoride contamination in Bassi, Amer, Chomu, Jamwa Ramgarh, Kotputali, Shahpura and Virat Nagar Tehsils of Jaipur District, Rajasthan, India. Paper also gives a brief idea about sources of fluoride in ground water and extent of fluorosis in these areas. As per the desirable and maximum permissible limit for fluoride in drinking water, determined by WHO and Bureau of Indian Standards, a lot of groundwater sources were found unfit for drinking purposes. In the whole study fluoride contamination status was highest in Bassi Tehsil as 64% samples showed the fluoride concentration more than the permissible limit and least in the Virat Nagar tehsil as 95.3% villages had the fluoride concentration within the permissible limit. Due to the higher fluoride level in drinking water several cases of dental and skeletal fluorosis have appeared at alarming rate in these regions. After evaluating the data of this study it is concluded that there is an instan...

ABSTRACT: The present study deals with statistical analysis of Physico-chemical parameters of ground water quality in Bassi Tehsil of District Jaipur, Rajasthan, India. For this ground water samples from 71 sampling sites of 50 villages of study area were collected from tube wells and hand pumps of varying depths in pre and post monsoon seasons and analyzed for ten physico-chemical parameters namely pH, Total Alkalinity, Total Hardness, Calcium, Magnesium, Chloride, Nitrate, Fluoride, Total Dissolved Solid and Electrical Conductivity. Analysis of results showed that almost all parameters were exceeding the permissible limits prescribed by BIS, ICMR and WHO. The quality of ground water has been assessed by calculating correlation coefficient (r) for every pair of parameters. Regression equations were also being formulated for pairs having highly significant (0.8<r<1.0) and moderately significant (0.6<r<0.8) correlation coefficients. Comparison has been made between the ob...

This project involved providing technical assistance to help small and medium size industries in Wisconsin to reduce operating costs by managing energy, waste and productivity. The project helped save 525 companies on average about $40,000 per year. Under the direction of Dr. Saxena, more than twenty undergraduate and ten graduate students were trained in energy, waste, and productivity management.

Page 1. The Engineering Economist TECHNICAL NOTES ESTIMATION OF SALVAGE VALUE IN COPPARING ALTERNATIVES WITH DIFFERENT LIVES Umesh Saxena and Arun Garg University of Wiscons in--Milwaukee INTRODUCTION The economic analysis of alternatives with different lives has received considerable attention in the past. There seems to be a general agreement that alternatives should be compared over the same life [2, 3, 4, 7, 11, 14, 151. Several ...