Background: Occupational environments with organic dust and bioaerosols pose danger to the respiratory health of the personnel of such environments. Respiratory health of the workers of saw-mills in relation to airborne bacterial and fungal concentrations has rarely been studied in India. Aims and Objectives: This study was, therefore, designed to assess and compare the pulmonary functions (PFs) of saw-mill workers with those of matching controls. The study also aimed at assessment of bioaerosol exposure in saw-mills as compared to indoor air in a residential area as a control. Materials and Methods:The study design was cross-sectional case-control. PFs (percent predicted of forced vital capacity [FVC], forced expiratory volume 1 s/FVC ratio, peak expiratory flow rate, forced mid expiratory flow 25-75%, and maximum ventilatory volume) were assessed by computerized spirometer (Helios, Recorders and Medicare System, India) in 30 saw-mill workers with minimum exposure of more than 5 years. 30 age and sex matched controls were also evaluated for the same parameters. Bacterial and fungal concentration (CFU/m 3 ) in the air of saw-mills with residential indoor air as a control was evaluated by volumetric air sampler (Hi-Air, Hi-Media, India). Appropriate statistical tests were used to compare respiratory symptoms, PFs, and bioaerosol levels. Results: Statistically significant lower values of PF parameters were observed in cases as compared to controls. Bacterial and Fungal concentrations in saw-mill air were significantly higher (P < 0.001) than control indoor air. Conclusion: The output of this study suggests a compromised respiratory status in workers of saw-mills with more exposure to bacteria and fungal spores. The results call for urgent measures to reduce environmental bioaerosol exposure in organic dust environments like saw-mills.

With the view to investigate the various changes in hydrobiological features during summer, winter and rainy season and to correlate the same with zooplankton productivity, the limnological survey of Irai river Dist. Chandrapur was undertaken during the year 2003-2004. The parameters such as temperature, conductivity, TDS, pH, CO2 DO have been studied. In the present investigation zooplankton showed low inverse correlation with temperature and pH, while moderate positive correlation with conductivity, turbidity, TDS, CO2. However, dissolved oxygen showed strong inverse correlation with temperature, CO2 and conductivity. In present investigation, among zooplankton Rotifera was the dominant group throughout the study. The highest count of zooplankton was recorded at sampling station D in winter season. The correlation coefficients between each pair of parameter for all possible correlation have been discussed in this paper.

In the present investigation an attempt has been made to evaluate nutritive values of local fishes available in Wani area from Nirguda river and Wardha river. The present study was carried out during the period of Nov. 2008 to Oct. 2009. During study the survey, collection, identification and biochemical analysis of local fishes was done.The results of present study showed that all the fishes were rich in protein content, maximum protein content found in Anguilla bengalensis 29.34 % and minimum found in Punctius curmuca 10.34 %.  Lipid contents of fishes were low and varied from 1.23 % in Rasbora daniconius to 6.54 % in Heteropneustes fossilis Glycogen content of fishes were negligible and varies from 0.11 % in Ostebrama cotio to 0.090% in Cyprinus carpio.

The significant sources of organic pollution enhance nutrient contents in the river water. Nitrogen, phosphorous and silicates play very important role in the biological activities of aquatic environments, such as the abundance of vegetation and faunal status. The Wainganga river water at Pauni town is analyzed for nutrient concentrations their inputs and rate of assimilation by organisms. Phosphate concentration ranged from 0.91 mg/l to 2.29 mg/l, ammonia nitrogen ranged from 0.32mg/l to 1.48 mg/l , nitrate nitrogen ranged from-, nitrite from 2.88 mg/l to 7.64 mg/l.

In the present investigation an attempt has been made to evaluate nutritive values of local fishes available in Wani area from Nirgudariver and Wardhariver. The present study was carried out during the period of Nov. 2008 to Oct. 2009. During study the survey, collection, identification and biochemical analysis of local fishes was done. The results of present study showed that all the fishes were rich in protein content, maximum protein content found in Anguilla bengalensis 29.34 % and minimum found in Punctius curmuca10.34 %.  Lipid contents of fishes were low and varied from 1.23 % in Rasboradaniconius to 6.54 % in Heteropneustes fossilis Glycogen content of fishes were negligible and varies from 0.11 % in Ostebramacotioto 0.090% in Cyprinuscarpio.