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Pandey, Abhishek
- Magnetic Susceptibility and Biotite Composition of Granitoids of Amritpur Region, Kumaun Lesser Himalaya: Implication on Granite Series Evaluation and Nature of Felsic Magma
Abstract Views :211 |
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Authors
Affiliations
1 Department of Geology, Kumaun University, Nainital - 263 002, Uttranchal, IN
1 Department of Geology, Kumaun University, Nainital - 263 002, Uttranchal, IN
Source
Journal of Geological Society of India (Online archive from Vol 1 to Vol 78), Vol 68, No 4 (2006), Pagination: 666-674Abstract
Felsic magmatism in Amripur and adjoining localities of Kumaun Lesser Himalaya is represented by Palaeoproterozoic (ca 1890 Ma) Bt-Ms granitoids and quartz feldspar porphyries, referred to as Amritpur granitoids (AG) and Amripur porphyry (AP) respectively Magnetic susceptibility( MS) values (range of average ϰ=0062 to 0 522x103 SI) measured for various types of AG correspond to ilmenite-series (reduced type) granites, which are consistent with their peralumnous nature. The MS of AP ranges from 0 399 to 0 912x103 SI with an average MS of 0 528x103 SI, which are typical to ilmenite series granite, although AP represents both metaluminous and peraluminous types Compositions of biotite from Medium-Grained, leucocratic equigranular variety of AG, referred to as Amritpur leucogranite (ALG), are primary in nature, and can be classified as Fe2+ (ferri)biotite enriched in siderophyllite component FeOt/MgO of biotites from AtG vanes from 2 93 to 4 94 which typically crystallized into crustally derived, peraluminous (S-type) felsic magma, with probable 3Fe ⇋ 2AI substitution in biotites during ALG melt evolution but 3Mg⇋2AI substitution cannot be inferred Bulk Fe2O3,/FeO ratio of most AG corresponds to llmenite series (Fe2O3/FeO<O 5) consistent with the observed MS values whereas AP samples equally represent both llmemate and magnetite (Fe2O3/FeO > 0 5) senes. The results strongly favour that the AG magma evolved under reducing environment.Keywords
Palaeoproterozolic Granitoids, llmenite Series, Biotlite Composition, Amritpur, Kumaun Lesser Himalaya.- Magnetic Susceptibility Mapping of Felsic Magmatic Lithounits in the Central Part of Bundelkhand Massif, Central India
Abstract Views :180 |
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Authors
Affiliations
1 Department of Geology, Kumaun University, Nainital - 263 002, IN
2 Geological Survey of India, Dimapur - 797 112, IN
3 Rolta Academy, MIDC, Marol, Andheri East, Mumbai - 400 093, IN
1 Department of Geology, Kumaun University, Nainital - 263 002, IN
2 Geological Survey of India, Dimapur - 797 112, IN
3 Rolta Academy, MIDC, Marol, Andheri East, Mumbai - 400 093, IN
Source
Journal of Geological Society of India (Online archive from Vol 1 to Vol 78), Vol 75, No 3 (2010), Pagination: 539-548Abstract
Late Archaean to Palaeoproterozoic felsic magmatic lithounits exposed in the central part of the Bundelkhand massif have been mapped and their redox series (magnetite vs ilmenite series) evaluated based on magnetic susceptibility (MS) data. The central part of Bundelkhand massif comprises of multiple felsic magmatic pulses (∼2600-2200 Ma), commonly represented by coarse grained granite (CGG-grey granite, CPG-pink granite), medium grained pink granite (MPG), fine grained pink granite (FPG) , grey and pink rhyolites and granite porphyry (GP). However, the pink colour of these felsic rocks is the result of hydrothermal fluid-flushing leading to potassic alteration of grey granites. MS values of CGG vary from 0.058 to 14.75×10-3 SI with an average of 6.35×10-3 SI, which mostly represent oxidized type, magnetite series (73%) granites involving infracrustal (igneous) source materials. CPG (av. MS=3.95×10-3 SI) is indeed a pink variety of CGG, the original oxidizing nature of which must have been similar to the bulk of CGG, but has been moderately to strongly reduced because of distinctly more porphyritic nature together with partial assimilation of metapelitic (supracrustal) materials, surmicaceous enclaves, carbonaceous material included in the source materials, and to some extent, induced by hydrothermal and later deformational processes. MPG (av. MS= 1.15×10-3 SI) as lensoidal stock-like bodies intrudes the CPG and represent both magnetite series (18%) and ilmenite series (82%) granites, which are probably formed by heterogeneous (mixed) source rocks. GP (av. MS=6.26×10-3 SI) occur as dykes (mostly trending NE-SW) intrudes the MPG, CPG and migmatites and bears the nature similar to oxidized type, magnetite series granite. FPG (av. MS= 0.666×10-3 SI) trending NE-SW occur as lensoid bodies including a large outcrop, is intrusive into both CPG and MPG, and is moderately to very strongly reduced type, ilmenite series granites, which may be derived by the melting of metapelitic crustal sources. FPG hosting microgranular (mafic magmatic) enclaves commonly exhibit high MS values (7.31-10.22×10-3 SI), which appear induced by the mixing and mingling of interacting felsic and mafic magmas prevailed in an open system. Grey (av. MS=10.30×10-3 SI) and pink (av. MS=6.72×10-3 SI) rhyolites represent oxidized type, magnetite series granites, which may have been derived from infracrustal (magmatic) protoliths. Granite series evaluation of felsic magmatic rocks of central part of Bundelkhand massif strongly suggests their varied redox conditions (differential oxygen fugacity) mostly intrinsic to magma source regions and partially modified by hydrothermal and tectonic processes acting upon them.Keywords
Magnetic Susceptibility, Magnetite Series, Ilmenite Series, Granitoids, Bundelkhand Massif, Central India.- Performance Evaluation of High Capacity Multi Crop Thresher on 'Gram' Crop
Abstract Views :380 |
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Authors
Affiliations
1 Department of Farm Machinery and Power Engineering, Mahatma Gandhi Chitrakoot Gramodaya Vishwavidyalaya, Chitrakoot, SATNA (M.P.), IN
2 Department of Farm Machinery and Power Engineering, College of Agricultural Engineering and Technology, ALLAHABAD (U.P.), IN
1 Department of Farm Machinery and Power Engineering, Mahatma Gandhi Chitrakoot Gramodaya Vishwavidyalaya, Chitrakoot, SATNA (M.P.), IN
2 Department of Farm Machinery and Power Engineering, College of Agricultural Engineering and Technology, ALLAHABAD (U.P.), IN
Source
International Journal of Agricultural Engineering, Vol 9, No 1 (2016), Pagination: 94-101Abstract
The present study was undertaken on high capacity multicrop thresher for threshing gram crop at three different speeds of 550 rpm, 600 rpm and 650 rpm at corresponding feed rate of 16q/h, 18q/h, 20q/h. Performance of the experimental thresher was evaluated with respect to threshing efficiency, cleaning efficiency, grain loss, grain breakage and the output capacity. In threshing gram, the maximum threshing efficiency was found to be 98.98 per cent at cylinder speed of 600 rpm and feed rate 20q/h. Similarly cleaning efficiency was found 97.30 per cent at cylinder speed of 600 rpm and feed rate 20q/h while the maximum total grain loss was found 3.3 per cent at cylinder speed 550 rpm and maximum feed rate 20q/h. The grain breakage was found 1.70 per cent at cylinder speed of 650 rpm and feed rate 20q/h. The output capacity was found 9.62q/h at cylinder speed of 600 rpm and feed rate 20 q/h. The net saving with multicrop thresher in threshing cost compared to traditional threshing method was found to be 31per cent for gram crop.Keywords
Concave Clearance, Feed Rate, Tachometer, Threshing Efficiency, Depreciation, Straw-Grain Ratio.References
- Desta, Kebada (1998). Design, development nd testing of sorghum thresher.M.Tech. Thesis, Deptt. of FarmMachinery of Power Engineering. G.B. Pantnagar University of Agricultural and Technology, Pantnagar, NAINITAL, INDIA.
- Harrington, R.E. (1970). Threshing principles confirmed with multi- crop thresher. J. Agric. Engg. India, 2:49-61.
- Hunt, D.R. (2001). Farm power machinery accumulated R&M costs to be lower than the actual data management. 10th Ed., Iowa State University for the first period of machine life and also predicts some Press. Ames. IOWA. U.S.A.
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- Mohan, Hari (1971). Effect of crop condition and threshing cylinder variables on thresh- ability of wheat. M.Sc. Thesis, Division of Agricultural Engineering, I.A.R.I., NEW DELHI, INDIA.
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- Vas, F.M. and Harison, H.P. (1969). The effect of selected mechanical threshing parameters on kernel damage and threshibility of wheat. Canadian Agric. Engg., 11(2):83–87.
- Time Spending Pattern for Various Media Activities of Urban and Rural Teenagers of India
Abstract Views :415 |
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Authors
Affiliations
1 Commerce Department, Kumaun University, S.S.J. Campus, Almora, IN
1 Commerce Department, Kumaun University, S.S.J. Campus, Almora, IN
Source
Asian Journal of Management, Vol 8, No 4 (2017), Pagination: 1075-1080Abstract
Sundry media activities have paramount role in the growing pattern of today’s teenagers. Degree of influence and impact of these activities on teenagers largely depends on time duration given to these different media and non-media activities like optically canvassing television, surfing internet, playing video games, computer games, heedfully aurally perceiving musical compositions on FM radio, reading newspaper / magazines and playing alfresco games. Time duration spent on mass media activities is incrementing day by day. Today teenagers mostly prefer visually examining television, playing computer games and surfing on internet and less intrigued with playing alfresco games and participation in gregarious and cultural activities. Excess of media utilization and avoidance of gregarious and cultural activities may have negative impact on teenager’s demeanor and their growing pattern. They are much active on Facebook and twitter, having hundreds of friends and processing information expeditiously but very less participative in authentic society. India is a diversified country. Here population is largely divided on the substratum of urban and rural substructure. There are lot of differences in urban and rural areas regarding infrastructure, communication, media activities, inculcative facilities, information technology, life style, fashion, victualing habits and many more. Main aim of this research paper was to ascertain time spending pattern of urban and rural teenagers discretely on sundry media and non-media activities and to find out are there any consequential differences? Study concluded that time spending pattern of urban and rural teenagers was significantly different which concludes that behavioral and growing pattern of these teenagers is withal different..Keywords
Media, Teenagers, Urban, Rural, Impact, Influence, Time Spent.References
- Agliata Daniel and Tantleff-Dunn Stacey (2004), The Impact of Media Exposure on Males' Body Image, Journal of Social and Clinical Psychology, Volume 23, Issue 1.
- Claire Mysko (2017), We live in a media-saturated world and do not control the message. Retrieved from https://www.nationaleatingdisorders.org/media-body-image-andeatingdisorders.
- Indians consume traditional media more than digital: Report (November 2016). Retrieved from http://www.livemint.com/Consumer/LQYSodrVyBsTG3V5hUvHXN/Indians-consume-traditional-media-more-than-digitalreport.html.
- Lilian. Z (2016), Some people believe that time spent on television, video and computer games can be beneficial to children. Others believe this has negative effect on a child.Retrieved from http://www.testbig.com/ielts-writing-task-ii-ielts-academic-essays/some-people-believe-time-spent-television-video-and-0.
- Mitchell Kimberly J, Finkelhor David and Wolak Janis (2001), Risk Factors for and Impact of Online Sexual Solicitation of Youth, Journal of American Medical Association, Volume 285, Issue No. 23, 3011-14.
- Schurgin Gwenn and Clarke Kathleen (2011), The Impact of Social Media on Children, Adolescents, and Families, Council on Communications and Media American Academy of Pediatrics Clinical Report, Volume 127, Issue 4.
- Surya Anisyah (2014), Children spend much time on TV, Video, and PC games. Some people believe it is good for them while others believe that is bad. Retrieved from http://www.testbig.com/ielts-essays/children-spend-much-time-tv-video-and-pc-games-some-people-believe-it-good-them-while.
- Teens spend an average of nine hours a day with media (November 2015). Retrieved from http://indiatoday.intoday.in/technology/story/teens-spend-an-average-of-9-hours-a-day-with-media/1/514917.html.
- Villani Susan (2001), Impact of Media on Children and Adolescents: A 10-Year Review of the Research, Journal of American Academy of Child and Adolescent Psychiatry, Volume 40, Issue 4, 392-401.