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Proterozoic orogenic belts and rifting of Indian cratons: Geophysical constraints

Geoscience Frontiers 2014年第1期5卷 25-41页

作者： d.c.mishra M.Ravi Kumar National Geophysical Research Institute (cSIR) Gravity GroupHyderabad 500007 India Indian Institute of Geomagnetism Navi Mumbai 410218 India

The Aravalli-delhi and Satpura Mobile Belts （AdMB and SMB） and the Eastern Ghat Mobile Belt （EGMB） in India form major Proterozoic mobile belts with adjoining cratons and contemporary basins. The most convincing features of the AdMB and the SMB have been the crustal layers dipping from both sides in opposite directions, crustal thickening （ -45 km） and high density and high conductivity rocks in upper/ lower crust associated with faults/thrusts. These observations indicate convergence while domal type re- flectors in the lower crust suggest an extensional rifting phase. In case of the SMB, even the remnant of the subducting slab characterized by high conductive and low density slab in lithospheric mantle up to - 120 km across the Purna-Godavari river faults has been traced which may be caused by fluids due to metamorphism. Subduction related intrusives of the SMB south of it and the AdMB west of it suggest N-S and E-W directed convergence and subduction during Meso-Neoproterozoic convergence. The simultaneous E-W conver- gence between the Bundelkhand craton and Marwar craton （Western Rajasthan） across the AdMB and the N-S convergence between the Bundelkhand craton and the Bhaodara and dharwar cratons across the SMB suggest that the forces of convergence might have been in a NE SW direction with E-W and N-S compo- nents in the two cases, respectively. This explains the arcuate shaped collision zone of the AdMB and the SMB which are connected in their western part. The Eastern Ghat Mobile Belt （EGMB） also shows signatures orE -W directed Meso Neoproterozoic convergence with East Antarctica similar to AdMB in north India. Foreland basins such as Vindhyan （AdMB-SMB）, and Kurnool （EGMB） Supergroups of rocks were formed during this convergence. Older rocks such as Aravalli （AdMB）, Mahakoshal-Bijawar （SMB）, and cuddapah （EGMB） Supergroups of rocks with several basic/ultrabasic intrusives along these mobile belts, plausibly formed during an earlier episode of rifting during

关键词： Indian Shield convergence collision Rifting Geophysical anomalies

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Ultra‑Transparent and Multifunctional IZVO Mesh Electrodes for Next‑Generation Flexible Optoelectronics

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Nano-Micro Letters 2025年第1期17卷 293-309页

作者： Kiran A.Nirmal Tukaram d.dongale Atul c.Khot chenjie Yao Nahyun Kim Tae Geun Kim School of Electrical Engineering Korea UniversityAnam‑ro 145Seongbuk‑guSeoulRepublic of Korea computational Electronics and Nanoscience Research Laboratory School of Nanoscience and BiotechnologyShivaji UniversityKolhapur 416004India

Mechanically durable transparent electrodes are essential for achieving long-term stability in flexible optoelectronic ***,they are crucial for applications in the fields of energy,display,healthcare,and soft *** meshes represent a promising alternative to traditional,brittle,metal oxide conductors due to their high electrical conductivity,optical transparency,and enhanced mechanical *** this paper,we present a simple method for fabricating an ultra-transparent conducting metal oxide mesh electrode using selfcracking-assisted *** this method,we produced an electrode with ultra-transparency(97.39%),high conductance(Rs=21.24Ωsq^(−1)),elevated work function(5.16 eV),and good mechanical *** also evaluated the effectiveness of the fabricated electrodes by integrating them into organic photovoltaics,organic light-emitting diodes,and flexible transparent memristor devices for neuromorphic computing,resulting in exceptional device *** addition,the unique porous structure of the vanadium-doped indium zinc oxide mesh electrodes provided excellent flexibility,rendering them a promising option for application in flexible optoelectronics.

关键词： Self-cracking template Vanadium-doped indium zinc oxide mesh Organic solar cells Organic light-emitting diodes Flexible transparent memory

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Open charm mesons and charmonia in magnetized strange hadronic matter

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chinese Physics c 2022年第8期46卷 91-113页

作者： Amal Jahan c.S. Amruta mishra department of Physics Indian Institute of TechnologyNew Delhi-110016India

We investigate the in-medium masses of open charm mesons(d(d^(0),d^(+)),■(■^(0),d^(-)),d_(s)(d_(s)^(+),d_(s)^(-)))and charmonium states(J/ψ,ψ(3686),ψ(3770),χ_(c0),χ_(c2)) in strongly magnetized isospin asymmetric strange hadronic matter using a chiral effective *** the presence of a magnetic field,the number and scalar densities of charged baryons have contributions from Landau energy *** mass modifications of open charm mesons result from their interactions with nucleons,hyperons,and the scalar fields(the non-strange field σ,strange field c and isovector field δ) in the presence of a magnetic *** mass modifications of the charmonium states result from the modification of gluon condensates in a medium simulated by the variation in the dilaton field(χ) in the chiral effective *** effects of finite quark masses are also incorporated in the trace of the energy-momentum tensor in quantum chromodynamics to investigate the mass shifts of charmonium *** in-medium masses of open charm mesons and charmonia are observed to decrease with an increase in baryon *** charged d^(+),d^(-),Z_(s)^(+),and d_(s)^(-)mesons have additional positive mass shifts due to Landau quantization in the presence of a magnetic *** effects of the strangeness fraction are observed to be more dominant for ■ mesons compared with d *** mass shifts of charmonia are observed to be larger in hyperonic media compared with nuclear media when the effect of the finite quark mass term is *** medium mass modifications can have observable consequences on the production of the open charm mesons and charmonia in high-energy asymmetric heavy-ion collision experiments.

关键词： open charm mesons charmonium states strange hadronic matter magnetic field heavy-ion collision chiral effective model

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corrosion Study of Base Material and Welds of a Ni-cr-Mo-W Alloy

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Acta Metallurgica Sinica(English Letters) 2017年第4期30卷 326-332页

作者： Ajit mishra Haynes International Inc. 1020 West Park AvenueKokomo IN 46904 USA

Alloys containing chromium （cr） and molybdenum （Mo）, as the major alloying elements, are widely used in various industries where the material experiences corrosive environments. chromium （cr）, when added in an optimum amount, forms a cr203 passive film which protects the underlying metal in aggressive solutions. Molybdenum （Mo） forms its oxides in the low pH solutions, thus, enhances the uniform corrosion resistance of an alloy in reducing acids and assists in inhibition to localized corrosion. Minor alloying elements, like tungsten （W） and copper （cu）, also improve the overall corrosion resistance of an alloy in specific solutions. In the present study, corrosion resistance behavior of commercial iron- based alloys （316L SS, 254 SMO and 20cb3） and nickel-based alloys （Mone1400, Alloy 625 and c-276） was studied in the acidic solutions. While the corrosion behavior of wrought alloys has been widely studied, there is little to no information on the corrosion performance of their welds, typically being the weak regions for corrosion initiation and propagation. Therefore, an attempt was undertaken to investigate the uniform and localized corrosion performance of base metal, simulated heat-affected zone and all-weld-metal samples of a Ni-cr-Mo-W alloy, c-276. The study was conducted in aggressive acidic solutions. Various corrosion and surface analytical techniques were utilized to analyze the results.

关键词： Iron-chromium-molybdenum Nickel-chromium-molybdenum-tungsten All-weld-metal Heat-affected-zone Acids Acidified ferric chloride Potentiodynamic Scanning electronmicroscopy (SEM)

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Mechanical and dielectric behaviors of perovskite(Ba,Sr)TiO_(3) borosilicate glass ceramics

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Journal of Advanced ceramics 2014年第2期3卷 137-146页

作者： Avadhesh Kumar YAdAV c.R.GAUTAM Abhinay mishra department of Physics University of Lucknow Lucknow-226007India School of Materials Science and Technology Indian Institute of TechnologyBanaras Hindu UniversityVaranasi-221005India

Perovskite(Ba,Sr)TiO_(3)glass ceramics were crystallized in the presence of La_(2)O_(3)for glass ceramic system[(Ba_(1-x)Sr_(x))TiO_(3)]-[2SiO_(2)-B2O_(3)]-[K2O]-[La_(2)O_(3)](x=0.0 and 0.4).The formation of major crystalline phase of BaTiO_(3)along with secondary phase of Ba_(2)TiSi_(2)O_(8) was confirmed by X-ray diffraction(XRd)*** crystalline phase was clearly seen in the micrographs of(Ba,Sr)TiO_(3)borosilicate glass ceramic *** prepared glass ceramic samples showed very high values of toughness and elastic *** strontium titanate(BST)glass ceramics are used in barrier layer capacitors for storage of high energy due to their very high dielectric constant and low dielectric loss.

关键词： (Ba,Sr)TiO_(3) X-ray diffraction(XRd) scanning electron microscopy(SEM) elastic modulus dielectric constant

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Solution of Schrdinger Equation for Two-dimensional complex Quartic Potentials

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communications in Theoretical Physics 2009年第3期51卷 397-406页

作者： Ram Mehar Singh Fakir chand S.c.mishra department of Physics Ch. Devi Lal University department of Physics Kurukshetra University

We investigate the quasi-exact solutions of the Schrodinger wave equation for two-dimensional non-hermitian complex Hamiltonian systems within the frame work of an extended complex phase space characterized by x = x1 ＋ ip3, y = x2 ＋ ip4, px= p1＋ ix3, py= p2 ＋ ix4. Explicit expressions of the energy eigenvalues and the eigenfunctions for ground and first excited states for a complex quartic potential are obtained. Eigenvalue spectra of some variants of the complex quartic potential, including PT-symmetrie one, are also worked out.

关键词： Schrodinger equation complex Hamiltonian eigenvalues eigenfunctions PT-symmetry

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Acquired sensorineural hearing loss,oxidative stress,and microRNAs

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Neural Regeneration Research 2025年第9期20卷 2513-2519页

作者： desmond A.Nunez Ru c.Guo division of Otolaryngology–Head&Neck Surgery Department of SurgeryFaculty of MedicineThe University of British ColumbiaVancouverBCCanada division of Otolaryngology–Head&Neck Surgery Gordon&Leslie Diamond Health Care CentreVancouver General HospitalVancouverBCCanada Faculty of Medicine–The University of British columbia VancouverBCCanada

Hearing loss is the third leading cause of human ***-related hearing loss,one type of acquired sensorineural hearing loss,is largely responsible for this escalating global health ***-induced,ototoxic,and idiopathic sudden sensorineural are other less common types of acquired hearing *** etiology of these conditions is complex and multi-fa ctorial involving an interplay of genetic and environmental *** stress has recently been proposed as a likely linking cause in most types of acquired sensorineural hearing *** non-coding RNA sequences known as microRNAs(miRNAs)have increasingly been shown to play a role in cellular hypoxia and oxidative stress responses including promoting an apoptotic *** hair cell death is a central histopathological finding in sensorineural hearing *** these cells do not regenerate in humans,it underlies the irreversibility of human age-related hearing *** EMBASE,Ovid MEdLINE,Web of Science core collection,and *** databases over the period August 1,2018 to July 31,2023 were searched with"hearing loss,""hypoxamiRs,""hypoxia,""microRNAs,""ischemia,"and"oxidative stress"text words for English language primary study publications or registered clinical *** red clinical trials known to the senior author we re also assessed.A total of 222studies were thus *** excluding duplicates,editorials,retra ctions,secondary research studies,and non-English language articles,39 primary studies and clinical trials underwent full-text *** resulted in 11 animal,in vitro,and/or human subject journal articles and 8 registered clinical trial database entries which form the basis of this narrative *** miR-34a and miR-29b levels increase with age in *** miRNAs were demonstrated in human neuroblastoma and murine cochlear cell lines to target Sirtuin 1/peroxisome proliferato r-activated receptor gamma coactivator-1-alpha(SIRT1/P Gc-1α),SIRT

关键词： hearing loss hypoxia microRNAs oxidative stress sensorineural

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Snow cover Variation and Streamflow Simulation in a Snow-fed River Basin of the Northwest Himalaya

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Journal of Mountain Science 2012年第6期9卷 853-868页

作者： Vaibhav SHARMA V.d.mishra P.K.JOSHI Snow and Avalanche Study Establishment Him ParisarSector 37AChandigarh 160036India TERI University New Delhi-110070India

Snowmelt is an important component of any snow-fed river *** Jhelum River is one such transnational mountain river flowing through India and *** basin is minimally glacierized and its discharge is largely governed by seasonal snow cover and ***,accurate estimation of seasonal snow cover dynamics and snowmeltinduced runoff is important for sustainable water resource management in the *** present study looks into spatio-temporal variations of snow cover for past decade and stream flow simulation in the Jhelum River *** cover extent(ScE) was estimated using MOdIS(Moderate Resolution Imaging Spectrometer) sensor *** difference Snow Index(NdSI) algorithm was used to generate multi-temporal time series snow cover *** results indicate large variation in snow cover distribution pattern and decreasing trend in different sub-basins of the Jhelum *** relationship between ScE-temperature,ScE-discharge and discharge-precipitation was analyzed for different seasons and shows strong *** streamflow simulation of the entire Jhelum basin Snow melt Runoff Model(SRM) used.A good correlation was observed between simulated stream flow and in-situ *** monthly discharge contribution from different sub-basins to the total discharge of the Jhelum River was estimated using a modified version of runoff model based on temperature-index approach developed for small *** power - an indicator of the erosive capability of streams was also calculated for different sub-basins.

关键词： Snow cover extent(ScE) Streamflow Snow Melt Runoff Model(SRM) Normalized difference Snow Index(NdSI) Jhelum basin Moderate Resolution Imaging Spectrometer(MOdIS)

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An improvised in vitro vegetative propagation technique for Bambusa tulda： influence of season, sterilization and hormones

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Journal of Forestry Research 2018年第4期29卷 1059-1064页

作者： deepti Bhadrawale Jay Prakash mishra Yogeshwar mishra Tropical Forest Research Institute P.O.-R.F.R.C. Mandla Road Jabalpur Madhya Pradesh 482021 India

Season and concentration of sterilizing agents play a significant role for establishment of aseptic in vitro shoot cultures and sprouting of nodal explants from field growing culms of bamboo species. In the present investigation the nodal segment explants of Bambusa tulda Roxb collected in different seasons and treated with various concentrations of Hgc12 showed significant variation in aseptic culture establishment and bud break. The rainy season （July-August） recorded with highest of 78% aseptic culture establishment whereas autumn recorded with lowest 46%. Summer and winter seasons emerged to be the best period, registering 〉 60% in vitro bud break. On the other hand, the autumn season had the lowest value for bud break, i.e. 42%. Among different doses of sterilizing agent tried, Hgc12 0.1% found to be suitable for maximum aseptic culture establishment （66%） as well as bud break （59%）. However, among the interactions, summer season and the dose of 0.1% Hgc12 exhibited maximum of 73% response for both aseptic culture establishment and bud break. MS medium （liquid） enriched with 5.0 μM BA ＋5.0 μM Kn [Kinetin （N6-Furfuryladenine）] with additional supplementation of 100 μM glutamine ＋ 0.1 μM IAA supported a maximum in vitro shoot multiplication of 4.75 fold. The proliferated shoots were successfully rooted on MS medium （liquid） supplemented 40 μM coumarin. The plantlets transferred to the polythene bags showed 98% survival.

关键词： Aseptic culture Bambusa tulda Roxb Bud sprouting Season

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Effect of in ovo feeding of xylobiose and xylotriose on plasma immunoglobulin, cecal metabolites production, microbial ecology, and metabolic pathways in broiler chickens

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Journal of Animal Science and Biotechnology 2024年第4期15卷 1578-1589页

作者： Razib das Pravin mishra Birendra mishra Rajesh Jha department of Human Nutrition Food and Animal SciencesCollege of Tropical Agriculture and Human ResourcesUniversity of Hawaii at ManoaHonoluluHI 96822USA

Background dietary supplementation of xylooligosac charides(XOS) has been found to influence gut health by manipulating cecal microbiota and producing microbe-origin *** no study investigated and compared the effect of in ovo feeding of xylobiose(XOS2) and xy lotriose(XOS3) in *** study investigated the effect of in ovo feeding of these XOS compounds on post-hatch gut health parameters in chickens.A total of 144 fertilized chicken eggs were divided into three groups:a) non-injected control(cON),b) XOS2,and c) *** the 17^(th) embryonic day,the eggs of the XOS2 and XOS3 groups were injected with 3 mg of XOS2 and XOS3 diluted in 0.5 mL of 0.85% normal saline through the amniotic *** hatching,the chicks were raised for 21 *** was collected on d 14 to measure plasma *** digests were collected for measuring short-chain fatty acids(ScFA) on d 14 and 21,and for microbial ecology and microbial metabolic pathway analyses on d 7 and *** The results were considered significantly different at Pd plasma IgA and IgG on d 14chickens,revealing no differences among the *** chromatography results showed no significant differences in the concentrations of cecal ScFAs on d 14 but significant differences on d ***;the ScFA concentrations were lower in the XOS3 than in the cON group on d *** cecal metagenomics data showed that the abundance of the family clostridiaceae significantly decreased on d 7,and the abundance of the family Oscillospiraceae increased on d 21 in the XOS2 compared to the *** was a reduction in the relative abundance of genus clostridium sense stricto 1 in the XOS2 compared to the cON on d 7 and the genus Ruminococcus,torques in both XOS2 and XOS3 groups compared to the cON on d *** XOS2 and XOS3 groups reduced the genes for chondroitin sulfate degradation Ⅰ and L-histidine degradation Ⅰpathways,which contribute to improved gut health,respectivelyc in the micr

关键词： Broiler In ovo Metagenomics Prebiotic Xylooligosaccharides

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