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Glass and Mineral Chemistry of Northern Central Indian ridge Basalts:Compositional Diversity and Petrogenetic Significance

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Acta Geologica Sinica(English Edition) 2009年第6期83卷 1122-1135页

作者： dwijesh r.y ranadip BANErJEE Sridhar D IyEr Basavaraju BASAVALINGU Subir MUKHOPADHyAy4 National Centre for Antarctic and Ocean research National Institute of Oceanography CSIR Department of Studies in Geology University of Mysore Department of Geological Sciences Jadavpur University

The glass and mineral chemistry of basaits examined from the northern central Indian ridge （NCIr） provides an insight into magma genesis around the vicinity of two transform faults： Vityaz （VT） and Vema （VM）. The studied mid-ocean ridge basalts （MOrBs） from the outer ridge flank （VT area） and a near-ridge seamount （VM area） reveal that they are moderately phyric plagioclase basalts composed of plagioclase （phenocryst [An60-90] and groundmass [An35-79]）, olivine （Fo81-88）, diopside （Wo45-51, En25-37, Fs14-24）, and titanomagnetite （FeOt -63.75 wt% and TiO2 -22.69 wt%）. The wholerock composition of these basalts has similar Mg# [mole Mg/mole（Mg＋Fe2＋）] （VT basalt： -0.56-0.58; VM basalt： -0.57）, but differ in their total alkali content （VT basalt： -2.65; VM basalt： -3.24）. The bulk composition of the magma was gradually depleted in MgO and enriched in FeOt, TiO2, P2O5, and Na2O with progressive fractionation, the basalts were gradually enriched in y and Zr and depleted in Ni and Cr. In addition, the ∑rEE of magma also increased with fractionation, without any change in the （La/ yb）N value. Glass from the VM seamount shows more fractionated characters （Mg#： 0.56-0.57） compared to the outer ridge flank lava of the VT area （Mg#： 0.63-0.65）. This study concludes that present basalts experienced low-pressure crystallization at a relatively shallow depth. The geochemical changes in the NCIr magmas resulted from fractional crystallization at a shallow depth. As a consequence, spinel was the first mineral to crystallize at a pressure 〉10 kbar, followed by Fe-rich olivine at 〈10 kbar pressure.

关键词： mineral chemistry fractional crystallization petrogenesis northern central Indian ridge

Spectral characteristics of banded iron formations in Singhbhum craton,eastern India:Implications for hematite deposits on Mars

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Geoscience Frontiers 2016年第6期7卷 927-936页

作者： Mahima Singh Jayant Singhal K.Arun Prasad V.J.rajesh dwijesh r.y Pr.yadarshi Sahoo Department of Earth and Space Science Indian Institute of Space Science and TechnologyValiamala P.O.Thiruvananthapuram 695 547India physical research Laboratory NavrangpuraAhmedabad 380009India Geological Survey of India State Unit:OdishaNuipalliBhubaneswar 751012India

Banded iron formations （BIFs） are major rock units having hematite layers intermittent with silica rich layers and formed by sedimentary processes during late Archean to mid Proterozoic time. In terrestrial environment, hematite deposits are mainly found associated with banded iron formations. The BIFs in Lake Superior （Canada） and Carajas （Brazil） have been studied by planetary scientists to trace the evolution of hematite deposits on Mars. Hematite deposits are extensively identified in Meridiani region on Mars. Many hypotheses have been proposed to decipher the mechanism for the formation of these deposits. On the basis of geomorphological and mineralogical studies, aqueous environment of deposition is found to be the most supportive mechanism for its secondary iron rich deposits. In the present study, we examined the spectral characteristics of banded iron formations of Joda and Daitari located in Singhbhum craton in eastern India to check its potentiality as an analog to the aqueous/marine environment on Mars. The prominent banding feature of banded iron formations is in the range of few millimeters to few centimeters in thickness. Fe rich bands are darker （gr.y） in color compared to the light reddish jaspilitic chert bands. Thin quartz veins （〈4 mm） are occasionally observed in the handspecimens of banded iron formations. Spectral investigations have been conducted in VIS/NIr region of electromagnetic spectrum in the laboratory conditions. Optimum absorption bands identified include 0.65, 0.86, 1.4 and 1.9 μm, in which 0.56 and 0.86 μm absorption bands are due to ferric iron and 1.4 and 1,9 μm bands are due to OH/H2O. To validate the mineralogical results obtained from VlS/NIr spectral radiometry, laser raman and Fourier transform infrared spectroscopic techniques were utilized and the results were found to be similar. Goethite-hematite association in banded iron formation in Singhbhum craton suggests dehydration activity, which has altered the primary iron ox

关键词： Banded iron formation Singhbhum craton VIS/NIr spectroscopy raman spectroscopy Terrestrial analog Mars

A Petrogenetic Model of Basalts from the Northern Central Indian ridge:3-11°S

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Acta Geologica Sinica(English Edition) 2007年第1期81卷 99-112页

作者： dwijesh r.y Sridhar D. IyEr ranadip BANErJEE Saumitra MISrA M. WIDDOWSON Geological Oceanography Division National Institute of Oceanography Goa-403 004 India Department of Geology and Geophysics Indian Institute of Technology Kharagpur-721 302 India Department of Earth Sciences Open University Milton Keynes MK7 6AA U.K.

Mid-Ocean ridge Basalts （MOrB） from the Northern Central Indian ridge （NCIr） were recovered between latitudes 3° and 11° S and are olivine tholeiite with higher abundances of K and rb. They are of typical transitional MOrB （T-MOrB） variety and appear to have been generated from an enriched-mantle peridotite source. The primitive NCIr MOrBs having Mg^# 〉 0.68 are the product of partial melting at an estimated pressure of - 1 GPa. It is inferred that the magma was subsequently modified at a pressure 〉 1 GPa by crystal fractionation and spinel was the first mineral to crystallize followed by separation of relatively Fe-rich olivine with subsequent decrease in pressure. During progressive fractionation at lower pressure （between 1-0.5 GPa）, the bulk composition of the magma became systematically depleted in MgO, and enriched in ∑FeO, TiO2, P2Os and Na20. There was, however, limited gradual depletion in Al2O3 and CaO and concomitant enrichment in K20. With the progressive fractionation these basalts became gradually enriched in V, Co, y, Zr and to some extent in Sr, and depleted in Ni and Cro In addition, the T_JtEE of the magma also increased with fractionation, without any change in （La/yb）n value.

关键词： MOrB NCIr geochemistry petrogenesis Indian Ocean mid-ocean ridge

Genome-Wide Analysis of von Willebrand Factor A Gene Family in rice for Its role in Imparting Biotic Stress resistance with Emphasis on rice Blast Disease

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rice science 2022年第4期29卷 375-384页

作者： Suhas Gorakh KArKUTE Vishesh KUMAr Mohd TASLEEM dwijesh Chandra MISHrA Krishna Kumar CHATUrVEDI Anil rAI Amitha Mithra SEVANTHI Kishor GAIKWAD Tilak raj SHArMA Amolkumar U.SOLANKE Indian Council of Agricultural research(ICAr)-National Institute for Plant Biotechnology New Delhi 110012India ICAr-Indian Agricultural Statistics research Institute New Delhi 110012India ICAr-Division of Crop Science New Delhi 110001India

von Willebrand factor A(vWA)genes are well characterized in humans except for few BONZAI genes,but the vWA genes are least explored in *** the novelty and vital role of vWA genes,this study aimed at characterization of vWA superfamily in *** genome was found to have 40 vWA genes distributed across all the 12 chromosomes,and 20 of the 40 vWA genes were unique while the remaining shared large fragment similarities with each other,indicating gene *** addition to vWA domain,vWA proteins possess other different motifs or domains,such as ubiquitin interacting motif in protein degradation pathway,and rING finger in protein-protein *** analysis of vWA genes in available expression data suggested that they probably function in biotic and abiotic stress responses including hormonal response and *** frequency of transposon elements in the entire 3K rice germplasm was negligible except for 9 vWA genes,indicating the importance of these genes in *** and functional diversities showed that the vWA genes in a blast-resistant rice variety Tetep had huge variations compared to blast-susceptible rice varieties HP2216 and ***-PCr analysis of vWA genes in Magnaporthe oryzae infected rice tissues indicated OsvWA9,OsvWA36,OsvWA37 and OsvWA18 as the optimal candidate genes for disease *** is the first attempt to characterize vWA gene family in plant species.

关键词： von Willebrand factor A biotic stress abiotic stress rice blast disease Magnaporthe oryzae

Knowledge Based Consolidation of UML Diagrams for Creation of Virtual Enterprise

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Intelligent Information Management 2010年第3期2卷 159-177页

作者： Debasis Chanda dwijesh Dutta Majumder Swapan Bhattacharya 不详

In this paper we address the problem related to determination of the most suitable candidates for an M&A (Merger &Acquisition) scenario of Banks/Financial Institutions. During the pre-merger period of an M&A, a number of candidates may be available to undergo the Merger/Acquisition, but all of them may not be suitable. The normal practice is to car.y out a due diligence exercise to identify the candidates that should lead to optimum increase in shareholder value and customer satisfaction, post-merger. The due diligence ought to be able to determine those candidates that are unsuitable for merger, those candidates that are relatively suitable, and those that are most suitable. Towards achieving the above objective, we propose a Fuzzy Data Mining Framework wherein Fuzzy Cluster Analysis concept is used for advisability of merger of two banks and other Financial Institutions. Subsequently, we propose orchestration/composition of business processes of two banks into consolidated business process during Merger &Acquisition (M&A) scenario. Our paper discusses modeling of individual business process with UML, and the consolidation of the individual business process models by means of our proposed Knowledge Based approach.

关键词： Knowledge Base Predicate Calculus Service Oriented Architecture UML Fuzzy Data Mining Cluster Analysis

Functional Genes in relation to residual Feed Intake in Murrah Buffalo Heifers

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Advances in Bioscience and Biotechnology 2023年第4期14卷 210-236页

作者： Poonam Sikka Shyam Sunder Paul Andonissamy Jerome dwijesh Mishra Krishna Kumar Chaturvedi Inderjeet Singh Anil rai ICAr Central Institute for Research on Buffaloes Hisar Haryana India ICAr Project Directorate on Poultry (PDP) Acharya N.G. Ranga Agricultural University Campus City Hyderabad India ICAr Indian Agricultural Statistics Research Institute New Delhi India

High Feed efficiency (FE) in growing heifers has economic importance in dairy, but remains less understood in buffaloes. Feed conversion efficiency is defined as dry matter intake (DMI) per unit body weight gain and is determined as residual feed intake (rFI), i.e., the difference between actual and predicted feed intake to gain unit body weight during a feed trial run for 78 days under control feeding. A large variation was identified ranging between -0.42 to 0.35 in growing buffalo heifers (n = 40) of age between 11 to 15 months. An average daily weight gain (ADG) varied between 382.0 and 807.6 g/day when compared with the control-fed heifers at an organized buffalo farm. The whole blood transcriptome data obtained from the selected growing heifers from extremes of estimated high and low rFI efficiency were compared with the reference assembly generated from the transcriptome of multiparous buffaloes (n = 16) of diverse age of maturity, period of regaining post partum cyclicity and level of milk production. Differentially expressed genes (DEGs) were identified using the reference genome of Mediterranean water buffalo. GO: terms (Padj 0.05, FDr 0.05) enriched by annotated DEGs and biological pathways in gene network for rFI efficiency trait were identified. GO: terms specific to pre-transcriptional regulation of nucleus and Chromatin organization under Nucleoplasm, Ener.y balancing, Immunity, Cell signaling, rOS optimization, ATP generation through the Electron Transport chain and cell proliferation were determined. The study reveals the indicators targeting the actual metabolic changes and molecular functions under.ying the feed utilization capacity of buffaloes. Estimated rFI efficiency revealed a large variation over heifers which may lower the DMI even up to 13.6% thus, enabling an increase in ADG up to 16% by involving efficient heifers in breeding plan. The study revealed a scope of high gain by selective breeding for FE in heifers. FE variants catalogued in

关键词： Bubalus bubalis Feed Efficiency residual Feed Intake Blood Transcriptome Differentially Expressed Genes

Functional Genes in relation to residual Feed Intake in Murrah Buffalo Heifers

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