| 1. |
- Shukla, S., et al.
(författare)
-
Appraisal of groundwater chemistry, its suitability for crop productivity in Sonipat district and human health risk evaluation
- 2023
-
Ingår i: Human and Ecological Risk Assessment. - : Informa UK Limited. - 1080-7039 .- 1549-7860. ; 29:2, s. 507-528
-
Tidskriftsartikel (refereegranskat)abstract
- The present study was taken with a primary objective to estimate the groundwater quality and its suitability toward sustainable crop productivity in an agriculturally dominant semi-urban area. Elevated levels of nitrate have severe health impacts and affect the human health. Hence, health risks associated with the consumption of nitrate contaminated water were estimated for adults and children in Sonipat district, Haryana. In general, the groundwater was found to be slightly alkaline and moderately hard. The anionic abundance was verified as F– < NO3– < HCO3– < SO42– < Cl–, whereas, the cationic abundance was verified as Ca2+ < Mg2+ < K+ < Na+. Concentration of nitrate varied from 1.34 mg/L to 565 mg/L, with an average value of 47.6 mg/L, and 46% of the groundwater samples had nitrate concentration of more than 45 mg/L. As per the results of Wilcox plot, only 34% of samples were suitable for crop productivity, whereas 23% of the samples fell in category-II of the permeability index. The non-carcinogenic health risk assessment further suggested that hazard quotient values for nitrate reached as high as 18.35 (children), and 13.57 (adult male), suggesting that health risk degree of children has greater health risk than adults in the study region. Overall results suggest an urgent need for intervention to adopt suitable health risk measures to reduce exposure toward nitrate contaminated drinking water. Moreover, agricultural practices must be improved to increase the crop productivity in the affected areas.
|
|
| 2. |
- Dutta, Joydeep, et al.
(författare)
-
Effect of Ion Bombardment on the Properties of Hydrogenated Amorphous Silicon Prepared from Undiluted and Xenon-Diluted Silane
- 1992
-
Ingår i: Japanese Journal of Applied Physics. - 0021-4922 .- 1347-4065. ; 31:3B, s. L299-L302
-
Tidskriftsartikel (refereegranskat)abstract
- The contribution of ion bombardment to the growth of hydrogenated amorphous silicon prepared by plasma-enhanced chemical vapour deposition from silane and xenon-diluted silane source gases was studied by applying an external d.c. voltage to the substrate electrode. The role played by the xenon ions in the growth of the materials prepared from xenon-diluted silane source gas has been considered. It is demonstrated that the xenon ions are responsible for the growth of the materials showing stable photoconductivity behaviour under light illumination.
|
|
| 3. |
|
|
| 4. |
|
|
| 5. |
- Pechsiri, Joseph Santhi, et al.
(författare)
-
Preliminary assessment of simultaneous mixotrophic production of Tetraselmis tetrathele and treatment of saline wastewater from aquaculture
-
Annan publikation (övrigt vetenskapligt/konstnärligt)abstract
- Interest in industrial-scale cultivation of microalgae biomass has increased in recent years, due to its potential in phytochemicals, wastewater treatment, and aquaculture feed. Previous studies have focused on freshwater systems and phototrophic microalgae growth. In this study, preliminary observations were performed on mixotrophic growth of Tetraselmis tetrathele in crude unaltered saline wastewater and its nutrient removal and aquaculture feed potential. The wastewater was obtained directly from a Pacific white shrimp farm. The results showed successful phototrophic and mixotrophic growth of Tetraselmis tetrathele in saline wastewater, with maximum specific growth rate of approximately 0.2 day-1. Some nutrient removal was achieved (phosphate), and use of biomass as feed for shrimp aquaculture are further discussed.
|
|
