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Krishnaveni, M.
- Meteorological Drought Severity Assessment for Vellore District, Tamil Nadu State, India
Abstract Views :720 |
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Authors
Affiliations
1 Department of Civil Engg., Sree Sastha Institute of Engg. & Tech., Chembarambakkam, Chennai-600 123, Tamil Nadu, IN
2 Department of Chemical Engg., Anna University, Chennai, Tamil Nadu, IN
3 Centre for Water Resources, Anna University, Chennai, Tamil Nadu, ID
1 Department of Civil Engg., Sree Sastha Institute of Engg. & Tech., Chembarambakkam, Chennai-600 123, Tamil Nadu, IN
2 Department of Chemical Engg., Anna University, Chennai, Tamil Nadu, IN
3 Centre for Water Resources, Anna University, Chennai, Tamil Nadu, ID
Source
International Journal of Civil Engineering Research, Vol 3, No 2 (2012), Pagination: 115-120Abstract
Drought, a vague phenomenon, has been defined and analyzed in various ways. Drought assessment involves analysis of spatial and temporal varying water related data. GIS is ideally suited for processing and analyzing such kind of data and to produce high quality maps. Using these capabilities, a GIS database can be created and drought severity maps can be produced. Drought assessment is being performed by different researchers using various methods. Drought severity in an area or basin is generally assessed in meteorological, hydrological and agricultural contexts. In this study, meteorological drought assessment was carried out using India Meteorological Department (IMD) method. Meteorological Drought Severity Index (MDSI) was developed based on the frequency analysis of IMD method. Vellore district, one of the drought prone district in Tamil Nadu State was selected as the study area. The methodology was applied for Samba season (major crop season) of the study area. Drought severity map was prepared in GIS environment giving blockwise meteorological drought severity status.Keywords
Drought, Meteorological Drought, IMD Method, Geographic Information System
References
- Drought Prone Area Programme (2006), Department of Land resources, Ministry of Rural Development, Govt., of India.
- Ground Water Perspectives, A Profile of Vellore District (1998), State Ground and Surface Water Resources Data Centre, Tamil Nadu,
- Report of Irrigation Commission (1972), Ministry of Irrigation and Power, Government of India, Vol.1, pp.156-177.
- Water Delivery Performance Evaluation of a Tank Irrigated System and Best Management Practices for Paddy Agriculture
Abstract Views :239 |
PDF Views:0
Authors
Affiliations
1 Centre for Water Resources, Anna University, Chennai - 600 025, Tamil Nadu, IN
1 Centre for Water Resources, Anna University, Chennai - 600 025, Tamil Nadu, IN
Source
Indian Journal of Science and Technology, Vol 8, No 15 (2015), Pagination:Abstract
Objectives: To identify the current agricultural practices, challenges faced in paddy agriculture and analyse the water delivery performance of tank using RS and GIS. To review and compare the current agriculture practices with the BIS and other standards and to propose BMP’s for paddy cultivation. Methods/Analysis: Random sampling of survey was taken and frequency analysis was done by questionnaire. The performance of irrigation system was carried out by rainfall frequency analysis by using Weibull’s formula. The water delivery performance was obtained by NDVI analysis. The current practices of paddy agriculture is analysed and compared with BIS 15930 (Part 1): 2010, TNAU and FAO reports to provide BMPs for improving the productivity. Findings: The NDVI values classified as high, low and normal water delivery performance for years of 2002, 2006, 2009 and 2011. The percentage of area under high vegetation of paddy in the year 2002 was 28% and increased to 31% in the year 2011, because of the rainfall in 2002 was 1032 mm, whereas it was 1499.6 mm in 2011. The drought year 2009, is characterized by a very drastic change of 0% percent vegetation in the tail end region of Navarai season. But, in the Samba season, the vegetations decreased as much as 9.8% when compared to vegetation in the Samba season of 2002. It can be inferred from the NDVI map of the Samba season of 2009, there is an increase in the high paddy vegetation in the tail end. The reason is an increase in the number of bore wells dug for paddy cultivation because of poor water delivery performance. Best management practices have been recommended, for the paddy cultivation. Conclusion: The farmers faced problems in water sharing, fragmentation; non-maintenance of supply system, non-availability of labours; consequently people involvement in agriculture is decreasing. By enhancing the water delivery performance and adopting best management practices, the productivity and farmers livelihood will increase.Keywords
BMP, NDVI, Paddy, Performance, Water DeliveryFull Text
- Influence of Lead on Biochemicals and Proline Contents of Vigna unguiculata (L.) Walp
Abstract Views :288 |
PDF Views:1
Authors
Affiliations
1 Department of Botany, Government Arts College, TIRUVANNAMALAI (T.N.), IN
2 Department of Botany, Annamalai University, Annamalai Nagar, CHIDHAMBARAM (T.N.), IN
1 Department of Botany, Government Arts College, TIRUVANNAMALAI (T.N.), IN
2 Department of Botany, Annamalai University, Annamalai Nagar, CHIDHAMBARAM (T.N.), IN
Source
International Journal of Plant Sciences, Vol 10, No 2 (2015), Pagination: 142-151Abstract
Among heavy metals, lead is an element that is easily accumulated in soil and sediments. The level of lead found in plants is often correlated with the level present in the environment. Cowpea [Vigna unguiculata (L.) Walp.], a member of Fabaceae, it is an annual multi-purpose grain legume plants suitable in a variety of cropping systems. The present study on ecophysiological effect of lead is undertaken to analyse the influence of ead on biochemicals and proline contents of cowpea [Vigna unguiculata (L.) Walp.]. In this study, Co -1 was considered to be more tolerant than other varieties tested. The lead treatment up to 10mg kg -1 soil concentration was, however, beneficial for the overall growth parameters. From those treatments under lead values were increased at 10mg kg-1 lead treatment. The uptake and accumulation of lead in cowpea plants increased with increased of lead level in the soil under field / pot culture experiments. From 25-200mg kg-1 biochemical contents were decreased (except proline).Keywords
Influence, Biochemicals, Proline, Vigna unguiculata.- Therapeutic Efficacy of Phyllanthus emblica L. Fruit Extract and Cisplatin Combination against 7, 12-Dimethylbenz(a)Anthracene Induced Hamster Buccal Pouch Carcinogenesis
Abstract Views :454 |
PDF Views:402
Authors
Affiliations
1 Annamalai University, Annamalainagar – 608 002, Tamil Nadu, IN
1 Annamalai University, Annamalainagar – 608 002, Tamil Nadu, IN
Source
FoodSci: Indian Journal of Research in Food Science and Nutrition, Vol 3, No 1 (2016), Pagination: 1-9Abstract
Amla fruit has been conventionally used as a health food for the prevention and therapy of cancer. Accordingly, the study aimed to explore the chemotherapeutic efficacy of amla and cisplatin combination on molecular mechanistic apoptosis implicated in proliferation, apoptosis and angiogenesis moleules during DMBA-induced buccal pouch carcinogenesis. Our western blot results showed that up regulation of Bcl-2, cyclin D1, Proliferating cell nuclear antigen, Cdc25C, Cox-2, Vascular endothelial growth factor and Survivin were observed in DMBA treated groups, whereas after treatment with combination therapy significantly down regulated the above noted proteins expression level. It was also observed that combination of amla and cisplatin treated tumor groups induced increased levels of Bax, caspase-3 and caspase-9 levels. More intriguingly, the effect was more pronounced in the tumor animals receiving combination therapy suggesting a synergistic effect. The results clearly suggest that combination therapy of amla and cisplatin had inhibitory effect during oral carcinogenesis via induction of apoptosis and suppression of molecules involved in cell proliferation and angiogenesis. Thus, amla fruit contains novel rich source of natural antioxidants and can be considered as an adjuvant therapeutic agent with cisplatin for oral cancer.Keywords
Angiogenesis, Apoptosis, Buccal Pouch Cancer, Chemotherapy, Phyllanthus emblica, Proliferation.Full Text
References
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- Singh B. N., Fu J., Srivastava R. K., and Shankar S., “Hedgehog signaling antagonist GDC-(Vismodegib) inhibits pancreatic cancer stem cell characteristics: molecular mechanisms”, PLoS One, vol. 6, e27306, 2011.
- Wang D., and Lippard S. J., “Cellular processing of platinum anticancer drugs”, Nat Rev Drug Disc, vol. 4, p. 307–320, 2005.
- Zhang Y., Wang C., Wang H., Wang K., Du Y., and Zhang J., “Combination of Tetrandrine with cisplatin enhances cytotoxicity through growth suppression and apoptosis in ovarian cancer in vitro and in vivo”, Cancer Lett, vol. 304, p. 21–32, 2011.
- Zygogianni A. G., Kyrgias G., Karakitsos P., Psyrri A., Kouvaris J., and Kelekis N., “Oral squamous cell cancer: early detection and the role of alcohol and smoking”, Head Neck Oncol, vol. 3, p. 2, 2011.