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Chakraborty, R.
- Root-rot of Neem (Azadirachta indica) Caused by Ganoderma applanatum
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Indian Forester, Vol 121, No 11 (1995), Pagination: 1081-1083Abstract
Root rot of neem (Azadirachta indica) is a serious disease caused by Ganoderma applanatum is recorded for the first time from Garo Hills (Meghalaya) even from north-east. Symptoms of the disease, morphology of the pathogen and its identification has been described in this paper.
- Heart Rot of Citrus indica Tanaka Caused by Ganoderma lucidum Reported from Nokrek Biosphere Reserve in Garo Hills
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Affiliations
1 Department of Botany, Don Bosco College, Tura, Meghalaya, IN
2 Department of Rural Development and Agricultural Production, Nehu, Tura Campus, Tura, Meghalaya, IN
1 Department of Botany, Don Bosco College, Tura, Meghalaya, IN
2 Department of Rural Development and Agricultural Production, Nehu, Tura Campus, Tura, Meghalaya, IN
Source
Indian Forester, Vol 141, No 1 (2015), Pagination: 120-121Abstract
No Abstract.- Configural Measurement Equivalence Testing of the Comprehensive Trait Based Model of Self-Regulated Learning in Engineering Undergraduates
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Affiliations
1 School of Education, Lovely Professional University, Phagwara, Punjab, IN
1 School of Education, Lovely Professional University, Phagwara, Punjab, IN
Source
Journal of Engineering Education Transformations, Vol 37, No 3 (2024), Pagination: 143-156Abstract
The present study extended the integrative trait model of self regulated learning by [30] by including the remaining behavioral and emotional components. Measurement invariance testing was conducted to check for the equivalence of the model with respect to gender, stream and batch among 488 (351 male and 137 female; 321 Computer Science and 167 Mechanical; 263 IInd Year and 225 IIIrd Year) engineering students selected through stratified random sampling from the three regions, Majha, Doaba and Malwa, of the Punjab state of India. [25] measurement invariance criterion of ∆CFI be less than or equal to 0.01 was used to test for equivalence of the model across the selected groups, since it is unaffected by model complexity, sample size and unrelated to overall fit measures. The revised integrative trait model of self regulated learning among engineering undergraduates was found to be Configural measurement invariant with respect to gender, stream and batch using SPSS Amos Ver. 23.0, meaning that the construct of self regulated learning is conceptualized by the participants across the groups of the study in same way. Reliability of the instrument's 14 variables was estimated using Pearson's correlation-based Cronbach's alpha (using SPSS Statistics Ver. 23.0) and Polychoric correlation based ordinal alpha (using R Package Psych), along with estimation of attenuation index to show the extent of underestimation of the vital psychometric property by assuming the data of Likert scale based questionnaires as continuous interval and on ignoring its categorical ordinal nature. The effect size of the validated model conducted as part of post-hoc power analysis using semPower R package was found to be satisfactorily high at 0.941. The academic implications of the study with respect to engineering education in the country are discussed.Keywords
Attenuation Index, Configural Measurement Invariance Testing, Engineering Education, Polychoric Ordinal Reliability, Sophomore Slump, Revised Integrative Trait Model of Self Regulated Learning.References
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- Identification of Dorsal Guard Hairs of Nine Species of the Family Bovidae (Artiodactyla: Mammalia)
Abstract Views :430 |
PDF Views:225
Authors
J. K. De
1,
R. Chakraborty
1
Affiliations
1 Zoological Survey of India, M-Block, New Alipore, Kolkata-700053, IN
1 Zoological Survey of India, M-Block, New Alipore, Kolkata-700053, IN
Source
Records of the Zoological Survey of India - A Journal of Indian Zoology, Vol 112, No 2 (2012), Pagination: 39-52Abstract
Tricho-taxonomic study of hair is very much significant in the study of mammalian taxononiy along with food habit, ecology, behaviour and even in the control of illegal trade of wildlife and its derivatives. Importance of hair analysis have been focused by a number of workers (Adorjan & Kolenosky 1969, Mathiak 1938, Williams 1938, Mayer 1952, Hausman 1920, Moore et. al, 1974, Koppikar & Sabnis 1976,1977, Terrink 1991, Wallis 1993, De & Chakraborty 1995,1998, 2002, 2006, Chakraborty & De 2001, 2002, 2005, Chakraborty et al, 1996, 1999, Toth 2002). But meager information is available on the hair structure of the spedes of the family Bovidae (Order: Artiodactyla).Full Text
- Design, Manufacturing and Application of Natural-Synthetic Composite Geotextiles for Protection of River-Bank
Abstract Views :420 |
PDF Views:3
Authors
G. Basu
1,
A. N. Roy
1,
P. Sanyal
1,
L. Mishra
1,
R. Chakraborty
1,
J. Abbas
1,
Ashok K. Ghosh
2,
Kaushik Sinha
2,
Milan Sen
2,
Nabanita Basu
3
Affiliations
1 National Institute of Research on Jute & Allied Fibre Technology, Indian Council of Agricultural Research, Kolkata - 700040, IN
2 Government of West Bengal, IN
3 University of Calcutta, IN
1 National Institute of Research on Jute & Allied Fibre Technology, Indian Council of Agricultural Research, Kolkata - 700040, IN
2 Government of West Bengal, IN
3 University of Calcutta, IN
Source
Indian Science Cruiser, Vol 24, No 3 (2010), Pagination: 33-47Abstract
Bank erosion has become a serious problem in many rivers. Generally occurring in the monsoon season, when the rivers are in spate, bank erosion causes inconceivable damage to the human habitation and property. Looking into the perennial problem and non-availability of indigenously produced geotextiles for specific use, a set of novel geo textile fabrics using jute and jute-coconut fibre blended yarn separately (in cross direction) and polyolefin tape yam (in machine direction) has been developed. The fabric samples contain more than 70% (wt/wt) natural fibre. The production viability of the developed geotextiles has been tested through continuous production of the geotextile fabrics using commercial-scale machines at NIRJAFT laboratory. The performance of the fabric samples were evaluated following ASTM standard test methods. The blended fabrics having much balanced property parameters are durable, more effective than both 100% natural and 100% synthetic fabrics and much cheaper than 100% imported synthetic geotextile fabrics. A successful field trial was conducted for protection of a part of the bank of Mayurakshi River (rained river) at West Bengal using the developed geotextiles based on the principle of using geotextiles as reinforcing material for stable grass-turfing. The vertical height and angle of gradient of the bank were approximately 9.0 m and 60° respectively. All the materials used for execution of laying-work of geotextiles were procured from adjacent locality. The work-force was also appointed from the nearby villages under NREGS. A total shower (till laying of geotextiles) during monsoon was recorded as nearly 140 cm and then at the end of full monsoon period, even after release of stored water from Massanjore dam through Tilpara barrage @ 1,25,000 cusec (plus additional 35,000 cusec from local catchments due to a spell of spearheaded shower for continuously three days during the same period), no change (deformation), and zero erosion of the part of the river-bank under trial was observed. While, on the rest of the part (where geotextile was not been used), signs of major soil erosion including rain-cuts (Number of rain-cut-64 /100 m length of river-bank) were clearly visible.