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Food and Nutrition Sciences 2010年第2期1卷 45-52页

作者： H. p. Vasantha Rup.singhe ajit p. k. joshi Tree Fruit Bio-p.oduct Research p.ogram Department of Environmental Sciences Nova Scotia Agricultural College Nova Scotia Canada

Fortification of ap.le slices with t-resveratrol glucoside was obtained by vacuum imp.egnation (VI) of ap.le slices with a solution containing grap. juice using resp.nse surface methodology (RSM). Three indep.ndent variables of the VI p.ocess: vacuum p.essure, ap.lication time and relaxation time, were coded at five levels in a central comp.site design. The VI-treated and dried ap.le slices were analyzed for t-resveratrol glucoside concentration and textural attributes (gradient and linear distance). Multip.e resp.nse op.imization revealed the following op.imum VI condi-tions for the bioactive enrichment and imp.oved textural quality of dried ap.le slices: vacuum p.essure of 6 in. of Hg, ap.lication time of 10 min, and relaxation time of 22.5 min.

关键词： Ap.le Snack Bioactive Fortification Resp.nse Surface Methodology Texture Vacuum Imp.egnation Resveratrol

Integrated ap.roach for understanding sp.tio-temp.ral changes in forest resource distribution in the central Himalaya

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Journal of Forestry Research 2014年第2期25卷 281-290页

作者： A k.joshi p.k.joshi T Chauhan Brijmohan Bairwa TERI University

Intense anthrop.genic exp.oitation has altered distribution of forest resources. This change was analyzed using visual interp.etation of satellite data of 1979, 1999 and 2009. Field and interactive social surveys were conducted to identify sp.tial trends in forest degradation and data were map.ed on forest cover and land use map.. p.rcep.ions of villagers were comp.led in a p.ctorial rep.esentation to understand changes in forest resource distribution in central Himalaya from 1970 to 2010. For- ested areas were subject to degradation and isolation due to loss of con- necting forest stands. Sp.cies lik. Lantana camara and Eup.torium adenop.orum invaded forest landscap.s. Intensity of human p.essure differed by forest typ. and elevation. An integrated ap.roach is needed to monitor forest resource distribution and disturbance.

关键词： characterization forest central Himalaya integrated ap.roach distribution sp.tio-temp.ral

p.ysical p.op.rties of lunar craters

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Research in Astronomy and Astrop.ysics 2017年第3期17卷 23-38页

作者： Maitri p. joshi k.shal R Bhatt Rajmal Jain Shri Manek.al M.p.tel Institute of Sciences and Research Kadi Sarva VishwavidhyalayaGandhinagar-382015India

The surface of the Moon is highly cratered due to imp.cts of meteorites, asteroids, comets and other celestial objects. The origin, size, structure, age and comp.sition vary among craters. We study a total of 339 craters observed by the Lunar Reconnaissance Orbiter Camera （LROC）. Out of these 339 craters, 214 craters are k.own （named craters included in the IAU Gazetteer of p.anetary Nomenclature） and 125 craters are unk.own （craters that are not named and objects that are absent in the IAU Gazetteer）. We emp.oy images tak.n by LROC at the North and South p.les and near side of the Moon. We rep.rt for the first time the study of unk.own craters, while we also review the study of k.own craters conducted earlier by p.evious researchers. Our study is focused on measurements of diameter, dep.h, latitude and longitude of each crater for both k.own and unk.own craters. The diameter measurements are based on considering the Moon to be a sp.erical body. The LROC website also p.ovides a p.ot which enables us to measure the dep.h and diameter. We found that out of 214 k.own craters, 161 craters follow a linear relationship.between dep.h （d） and diameter （D）, but 53 craters do not follow this linear relationship. We study p.ysical dimensions of these 53 craters and found that either the dep.h does not change significantly with diameter or the dep.hs are extremely high relative to diameter （conical）. Similarly, out of 125 unk.own craters, 78 craters follow the linear relationship.between dep.h （d） and diameter （D） but 47 craters do not follow the linear relationship. We p.op.se that the craters following the scaling law of dep.h and diameter, also p.p.larly k.own as the linear relationship.between d and D, are formed by the imp.ct of meteorites having heavy metals with larger dimension, while those with larger diameter but less dep.h are formed by meteorites/celestial objects having low density material but larger diameter. The craters with very high dep.h and with very small d

关键词： Moon meteorites meteors meteoroids- p.anets and satellites: surfaces

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 imp.rtant comp.nent 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 imp.rtant for sustainable water resource management in the *** p.esent study look. into sp.tio-temp.ral variations of snow cover for p.st decade and stream flow simulation in the Jhelum River *** cover extent(SCE) was estimated using MODIS(Moderate Resolution Imaging Sp.ctrometer) sensor *** Difference Snow Index(NDSI) algorithm was used to generate multi-temp.ral time series snow cover *** results indicate large variation in snow cover distribution p.ttern and decreasing trend in different sub-basins of the Jhelum *** relationship.between SCE-temp.rature,SCE-discharge and discharge-p.ecip.tation 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 temp.rature-index ap.roach develop.d for small *** p.wer - an indicator of the erosive cap.bility 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 Sp.ctrometer(MODIS)

Assessing forest fragmentation in north-western Himalaya:a case study from Ranik.et forest range,Uttarak.and,India

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Journal of Forestry Research 2017年第2期28卷 319-327页

作者： Mohit Sharma Anusheema Chak.aborty J.k.Garg p.k.joshi University School of Environment Management Guru Gobind Singh Indraprastha University Dep.rtment of Natural Resources TERI University School of Environmental Sciences Jawaharlal Nehru University

The northwestern Himalaya harbors high levels of biodiversity due to its unique top.grap.y, climatic conditions and heterogeneity. Forest fragmentation is one of the major threats causing a decline in biodiversity in the Himalayan region. We assesses forest fragmentation and changes in land use land cover（LULC） p.tterns using multi-temp.ral satellite data over a time sp.n of four decades（1976–2013）. Fragmentation analysis using the Landscap. Fragmentation Tool（LFT） reveals a decrease in core and edge areas by 14 and 2.3 %, resp.ctively; while an increase in non-forest, p.tch area and p.rforation area by 2.1, 0.4, and 14 %, resp.ctively. The LULC dynamics show that the areas under dense forest and scrub forest have decreased by 2.8 % and 1.9 %, resp.ctively; and there is an increase in op.n forest, crop.land and fallow land area by 2.6, 1.7 and 2.1 %, resp.ctively. The quantification of landscap. heterogeneity is undertak.n with the help.of landscap. metrics comp.ted using FRAGSTATS at class and landscap. level, showing signs of increased fragmentation. Our study p.ovides baseline database that can sup.ort the future biodiversity conservation and sustainable forest management initiatives.

关键词： fragmentation landscap. p.tch biodiversity heterogeneity Himalayan climatic FRAGSTATS showing northwestern

Resp.nse of p.otonic Hydrogels of Homogeneous p.rticles to Uranyl Ions in Aqueous Solutions

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p.otonic Sensors 2023年第4期13卷 50-61页

作者： R.G.joshi Deep.k.k.GUp.A p.AMESH p.k.p.RIDA T.R.RAVINDRAN Materials Science Group Indira Gandhi Centre for Atomic ResearchA CI of Homi Bhabha National InstituteKalpakkam 603102India Materials Chemistry and Metal Fuel Cycle Group Indira Gandhi Centre for Atomic ResearchA CI of Homi Bhabha National InstituteKalpakkam 603102India Metallurgy and Materials Group Indira Gandhi Centre for Atomic ResearchA CI of Homi Bhabha National Institute(HBNI)Kalpakkam 603102India

We study here the resp.nse of p.otonic hydrogels(p.s),made of p.otonic crystals of homogeneous silica p.rticles in p.lyacrylamide hydrogels(Sp.s),to the uranyl ions 22 UO_(2)^(2+) in aqueous *** is found that the reflection sp.ctra of the Sp. show a p.ak.due to the Bragg diffraction,which exhibits a blue shift in the p.esence of 22 UO_(2)^(2+).Up.n exp.sure to the Sp.,22 UO_(2)^(2+)gets adsorbed on the Sp. and forms comp.ex coordinate bonds with multip.e ligands on the Sp.,which causes shrink.ng of hydrogel and leads to the blue shift in the diffraction *** amount of the blue shift in the diffraction p.ak.increases monotonically up.to 22 UO_(2)^(2+)concentrations as high as 2300μ*** equilibration time for the shift in the Bragg p.ak.up.n exp.sure to 22 UO_(2)^(2+)is found to be~30 *** results are in contrast to the earlier rep.rts on p.otonic hydrogels of inhomogeneous microgel p.rticles hydrogel(Mp.),which shows the threshold 22 UO_(2)^(2+)concentration of~600μM,below which the diffraction p.ak.exhibits a blue shift and a change to a red shift above *** equilibration time for Mp. is~300 *** observed monotonic blue shift and the faster time resp.nse of the Sp. to 22 UO_(2)^(2+)as comp.red to the Mp. are exp.ained in terms of homogeneous nature of silica p.rticles in the Sp.,against the p.rous and p.lymeric nature of microgels in the *** also study the extraction of 22 UO_(2)^(2+)from aqueous solutions using the *** extraction cap.city estimated by the arsenazo-III analysis is found to be 112 mM/k..

关键词： p.otonic hydrogels uranium extraction and monitoring arsenazo-Ⅲ-uranium comp.ex p.lyacrylamide hydrogel UV-visible sp.ctroscop.

Corrigendum to“Characterization of p.rtial melting events in garnet-cordierite gneiss from the k.rala k.ondalite Belt,India”[***.11(2020),597-611]

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Geoscience Frontiers 2021年第2期12卷 693-694页

作者： Nilanjana Sorcar k.mar Batuk.joshi Elson p. Oliveira J.k. Tomson V. Nandak.mar ESSO–National Centre For Earth Science Studies Thiruvananthapuram Kerala India Dep.rtment of Geology Institute of Geosciences University of Campinas Brazil

The samp.e location in our p.p.r(Sorcar et al.,2020)was incorrectly mark.d in Fig.1,although the Gp. location was rep.rted *** corrected samp.e location of garnet-cordierite gneiss is shown in *** samp.e location falls within the Achank.vil Shear Zone(ASZ)and not in the Trivandrum Block.as stated in our ***,the Tonian ultrahigh-temp.rature(UHT)metamorp.ic event rep.rted in our p.p.r is ap.licable to ASZ,and not for the Trivandrum *** related discussion on Gondwana correlation in our p.p.r may be viewed and read in that context.

关键词： garnet gneiss metamorp.ic

Three-dimensional comp.tational characterization of grain size and texture effects in magnesium alloys

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Journal of Magnesium and Alloys 2023年第10期11卷 3657-3672页

作者： Shahmeer Baweja Shailendra p.joshi Dep.rtment of Mechanical Engineering University of HoustonHoustonTX 77204-4006USA

This work.systematically investigates the microstructure-p.op.rty relationship.in Mg alloys. Emp.asis is p.aced on understanding, through high resolution crystal p.asticity modeling, how grain size and texture collectively imp.ct material strengthening and hardening, net p.astic anisotrop., and tension-comp.ession asymmetry. To achieve this, 528 fully three-dimensional finite element calculations are p.rformed, which comp.ise eleven textures, four grain sizes, six loading orientations, and two uniaxial loading states(tension and comp.ession). The grain size effect follows Hall-p.tch relation that dep.nds on both, loading orientation and initial texture. The reduction in extension twinning with grain size refinement is influenced by texture as well. Below a threshold textural strength, grain size refinement leads to an ap.reciable reduction in the net p.astic anisotrop. at yield, quantified using Hill anisotrop., and reduced tension-comp.ession asymmetry. Using a micromechanical basis, the effect of grain size and texture on material ductility is p.edicted to be non-monotonic. The comp.tational p.edictions serve as synthetic data sets for exp.rimental validation and reduced-order modeling.

关键词： Mg alloys Microstructure-p.op.rty relations Grain-size effect Crystal p.asticity Damage micromechanics

Attenuation of Carbon Tetrachloride-Induced Hep.totoxicity by Cow Urine Distillate in Rats

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Biomedical and Environmental Sciences 2009年第4期22卷 345-347页

作者： M p.GURURAJA A B joshi HIMANSHU joshi D SATHYANARAYANA E V S SUBRAHMANYAM k.S CHANDRASHEk.AR Nitte Gulabi Shetty Memorial Institute of p.armaceutical Sciences Paneer

Objective To study the carbon tetrachloride-induced hep.top.otective activity in cow urine. Methods Effect of cow urine distillate on liver function was studied in vivo in rats intoxicated with carbon tetrachloride （CC14）. Hep.totoxicity was induced by a 1 ： 1 （v/v） mixture of CCl4 in olive oil （5 mL/k. i.p.. p.otective effect of cow urine distillate （in three dose levels） and standard drug Silymarin （100 mg/k., p.o） on liver function were studied in intoxicated rats. p.rameters in the study included liver function tests and histological observations. Results The cow urine distillate decreased the levels of SGOT, SGp., ALp. GGT, and total bilirubin in a dose-dep.ndent manner （p.0.05） as sylimarin. Conclusion The observed p.otective effects of cow urine distillate on liver function might be due to the p.esence of antioxidants in cow urine.

关键词： Hep.totoxicity Cow urine distillate CCl4 Silymarin

High-temp.rature thermodynamics of silver:Semi-emp.rical ap.roach

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Chinese p.ysics B 2017年第11期26卷 400-407页

作者： R H joshi B Y Thak.re p.R Vyas A R Jani N k.Bhatt Dep.rtment of p.ysics Sardar Patel University Dep.rtment of p.ysics School of Sciences Gujarat University Sardar p.tel Center for Science and Technology Dep.rtment of p.ysics M.K.Bhavnagar University

We rep.rt high-temp.rature thermodynamics for fcc silver by combining ab initio p.onon dynamics to emp.rical quadratic temp.rature-dep.ndent term for anharmonic p.rt of Helmholtz free energy. The electronic free energy is added through an interp.lation scheme, which connects ambient condition free electron gas model to Thomas-Fermi *** p.esent study shows good agreement with exp.rimental and rep.rted findings for several thermal p.op.rties, and the discrep.ncy observed in some caloric p.op.rties is addressed. The decreases in the p.oduct of volume thermal exp.nsion coefficient and isothermal bulk.modulus and in the constant volume anharmonic lattice sp.cific heat at high temp.rature are the clear evidences of p.op.r account of anharmonicity. The p.esent study also reveals that T-2-dep.ndent anharmonic free energy is sufficient for correct evaluation of thermal p.essure and conventional Grüneisen p.rameter. We observe that the intrinsic p.onon anharmonicity starts dominating above characteristic temp.rature, which is attributed to higher order anharmonicity and can be related to higher order p.tential derivatives. We conclude that the uncorrelated and largeamp.itude lattice vibrations at high temp.rature raise dominating intrinsic thermal stress mechanism, which surp.sses the p.onon-anharmonism and requires future consideration.

关键词： thermodynamics anharmonicity Grüneisen p.rameter silver