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Suja, S.
- Germination Behaviour and Occurrence of Albino Seedlings in Sapindus emarginatus Vahl
Abstract Views :367 |
PDF Views:7
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Indian Forester, Vol 139, No 6 (2013), Pagination: 543-546Abstract
Soapnut being one of the largely traded non timber forest product (NTFP) of Tamil Nadu, work on germplasm assemblage of Sapindus emarginatus was undertaken to conserve and domesticate the species for sustainable use. Candidate plus trees (CPTs) were identified based on their fruit yield from four locations in Tamil Nadu. Fruits from selected 55 CPTs were collected and studied for seed germination and seedling vigour index. Out of four populations viz. Thengumarada, Pillur, Mettupalayam and Palani, albino seedlings were noticed in half-sib progenies of two CPTs of Pillur. The germination and seedling vigour index were found to be statistically significant in these populations as compared to Pillur indicating the need for concerted efforts to conserve the Pillur population.Keywords
Candidate Plus Trees, Sapindus emarginatus, Fruit Yield, Albino Seedlings
- Fault Location Technique for UHV Lines Using Wavelet Transform
Abstract Views :574 |
PDF Views:2
Authors
Affiliations
1 EEE / Karpagam college of Engineering, Coimbatore, IN
2 EEE / Coimbatore Institute of Technology, Coimbatore, IN
1 EEE / Karpagam college of Engineering, Coimbatore, IN
2 EEE / Coimbatore Institute of Technology, Coimbatore, IN
Source
International Journal of Electrical Engineering, Vol 6, No 1 (2013), Pagination: 77-88Abstract
The paper illustrates a procedure based on the continuous-wavelet transform (CWT) for the analysis of current transients due to line faults. Considering roundly reliability and accuracy of one terminal fault location system for transmission lines, a single-ended continuous wavelet Transform (CWT) based fault location algorithm has been presented in this paper. Wavelet transform is a powerful mathematical tool which can be employed as a fast and very effective means of analyzing power system transient signals. The modal current is decomposed by wavelet in time. The different decomposition coefficients on different scales reflecting different frequency information are used to calculate the transient characteristic of voltage and current. The transient characteristic is then utilized to obtain the transient energy of the fault that is employed to identify the fault position. MATLAB/Simulink is used to generate fault signals and verify the correctness of the algorithm.Keywords
Accuracy, Fault Location, Fault Currents, Continuous Wavelet Transform, One End DataReferences
- Z. Chen, C. M. Luo, and J. Su et al., “A fault location algorithm for transmission line based on distributed parameter [C], ” in Proc. Inst. Elect.Conf. Develop. Power Syst. Protection, pp. 411–413.
- G.-T. Kim, H.-S.Kim, and J.-Y. Choi, “Wavelet transform based power transmission line fault location using GPS for accurate time synchronization [C], ” in Proc. 27th Annu. Conf. IEEE Ind. Electron.Soc., pp.495–499.
- R.K. Aggarwal, Y. Aslan, A.T. Johns, New concept in fault location for overhead distribution systems using superimposed components, Generation, Transmission and Distribution, IEE Proceedings 144 (1997) 309–316.
- Z. Chen, J.C. Maun, Artificial neural network approach to single-ended fault locator for transmission lines, IEEE Transactions on Power Systems 15 (2000) 370–375.
- H. Heng, Z. Xu, Ba. Hui, Zhi L. Lai, A novel principle of single-ended fault location technique for ehv, Power Engineering Review IEEE 22 (2002) 61–161
- H.X. Ha, B.H. Zhang, Z.L. Lv, A novel principle of single-ended fault location technique for ehv transmission lines, IEEE Transactions on Power Delivery 18 (2003) 1147–1151.
- D. Spoor, J.G. Zhu, Improved single-ended traveling-wave fault-location algorithm based on experience with conventional substation transducers, IEEE Transaction on Power Delivery 21 (2006) 1714–1720.
- Z. Q. Bo, A. T. Johns, A. K. Aggarwal, “A novel fault locator based on the detection of fault generated high frequency transients, ” in 1997 Proc.Sixth IEE Developments in Power Systems Protection Conf., pp.197– 200
- K. Ramar, A. A. Eisa, “New fault location algorithms for overhead transmission lines, ” Int. Journal of Power and Energy Systems, vol. 28, pp. 241–251, 2008.
- Osman AH, Malik OP. Transmission line distance protection based on wavelet transform. IEEE Trans Power Delivery 2004;19(2):515–23.
- C. Christopoulos, D. W. P. Thomas, and A. Wright, “Scheme based on traveling waves for the protection of major transmission lines, ” Proc. Inst. Elect. Eng., Gen., Transm. Distrib., vol. 135, no. 1, pp. 63–73, Jan. 1988.
- Kim CH, Aggarwal R. Wavelet transforms in power systems. II. Examples of application to actual power system transients. IEE Power Eng J 2001;15(4):193–202.
- Effect of Mercury and Effluents on Seed Germination, Root-Shoot Length, Amylase Activity and Phenolic Compounds in Vigna unguiculata
Abstract Views :193 |
PDF Views:0
Authors
Affiliations
1 Department of Microbiology, Dr. N.G.P. Arts and Science College, Coimbatore-641 014, T. N, IN
2 Department of Biochemistry, Dr. N.G.P. Arts and Science College, Coimbatore-641 014, T. N, IN
3 Institute of Laboratory Medicines, Kovai Medical Center and Hospitals, Coimbatore-641 014, IN
1 Department of Microbiology, Dr. N.G.P. Arts and Science College, Coimbatore-641 014, T. N, IN
2 Department of Biochemistry, Dr. N.G.P. Arts and Science College, Coimbatore-641 014, T. N, IN
3 Institute of Laboratory Medicines, Kovai Medical Center and Hospitals, Coimbatore-641 014, IN
Source
Nature Environment and Pollution Technology, Vol 6, No 3 (2007), Pagination: 457-462Abstract
The lethal toxicity tests for mercury and effluents were performed in Vigna unguiculata (cow pea). There was a significant alteration in the growth of plants. Effects of mercury and effluents reduce the germination of seeds. An abnormality in ischolar_main-shoot length as well as variation in amylase activity was observed. The amount of phenolic compounds increase with increase in mercury content. Since Vigna unguiculata is an annual plant, results can be seen quickly.Full Text
- Spatial Distribution of Suspended Particulate Matter in the Mandovi and Zuari Estuaries:Inferences on the Estuarine Turbidity Maximum
Abstract Views :280 |
PDF Views:101
Authors
Affiliations
1 CSIR-National Institute of Oceanography, Dona Paula, Goa 403 004, IN
1 CSIR-National Institute of Oceanography, Dona Paula, Goa 403 004, IN
Source
Current Science, Vol 110, No 7 (2016), Pagination: 1165-1168Abstract
An estuary is a region where a river meets the sea. In these estuarine regions there exists a strong physio-chemical and compositional gradient in the water properties, that varies rapidly from freshwater to sea water. Estuaries are important areas as they filter out suspended particulate matter (SPM), sediments and pollutants from the rivers before entering the sea and keep the coastal seas healthy.Full Text
- Production of Ethanol from Ipomoea batatas using Saccharomyces cerevisiae
Abstract Views :165 |
PDF Views:0
Authors
Affiliations
1 Department of Biotechnology, Dr. N.G.P. Arts and Science College, Coimbatore (T.N.), IN
2 Department of Microbiology, Dr. N.G.P. Arts and Science College, Coimbatore (T.N.), IN
3 Department of Biochemistry, Dr. N.G.P. Arts and Science College, Coimbatore (T.N.), IN
4 Department of Microbial Biotechnology, Bharathiar University, Coimbatore (T.N.), IN
1 Department of Biotechnology, Dr. N.G.P. Arts and Science College, Coimbatore (T.N.), IN
2 Department of Microbiology, Dr. N.G.P. Arts and Science College, Coimbatore (T.N.), IN
3 Department of Biochemistry, Dr. N.G.P. Arts and Science College, Coimbatore (T.N.), IN
4 Department of Microbial Biotechnology, Bharathiar University, Coimbatore (T.N.), IN