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Influence of anthropogenic activities on landslide susceptibility:A case study in Solan district,Himachal Pradesh,India

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Journal of Mountain Science 2023年第2期20卷 429-447页

作者： Sangeeta S.k.singh Department of Civil Engineering Punjab Engineering CollegeChandigarh 16012India

Landslides in the Himalayan region are primarily controlled by natural parameters,including rainfall,seismic activity,and anthropogenic parameters,such as the construction of large-scale projects like road development,tunneling and hydroelectric power projects and climate *** parameters which are more crucial among these are a matter of scientific study and *** research,taking Solan district,Himachal Pradesh,India,as the study area,aims to assess the impact of anthropogenic activities on landslide susceptibility at a regional *** distribution was characterized into two groups,namely Rainfall-Induced Landslide(RIL)and Human-Induced Landslide(HIL)based on triggering *** data such as slope angle,aspect,profile curvature,distance to drainage,distance to lineament,lithology,distance to road,normalized difference vegetation index(NDVI)and land use land cover(LULC)have been considered for delineating the landslide susceptibility zonation(LSZ)*** effect of anthropogenic activities on landslide occurrences has been examined through the distribution of landslides along national highways and land use land cover changes(LULCC).Two sets of LSZ maps with a LULC of time interval covering five years(2017&2021)were prepared to compare the temporal progression of LULC and landslide susceptibility during the five *** results indicated the significant impact of anthropogenic activities on the landslide *** map of the year 2021 shows that 23%area falls into high and very high susceptible classes and 48%area falls into very low and low susceptibility *** to LSZ map of 2017,high and very high susceptible classes have been increased by 15%,whereas very low and low susceptible classes have been reduced by 7%.The present case study will help to understand the potential driving parameters responsible for HIL and also suggest the inclusion of LULC in landslide susceptibility *** study will demonstrate new

关键词： Landslide Anthropogenic Human-Induced Landslide(HIL) Rainfall-Induced Landslide(RIL)

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肾功能正常的抗肾小球基底膜病

中华肾脏病杂志 2008年第1期24卷 51-53页

作者：崔昭赵明辉 Ajay k.singh 王海燕北京大学第一医院肾内科 100034 Renal Division Brigham and Women's HospitalHarvanl Medical SchoolBostonMA 02115USA

一、病历摘要患者，男性，23岁，因间断咯血4个月，血尿、蛋白尿1个月入院患旨4个月前无诱因间断出现痰中带血，未诊治，1个月前受凉后发热，T38．2℃、次日咯血加重呈鲜血痰，每次1～2ml，伴咳嗽、胸闷，呼吸困难。外院查血Hb 71．0g／... 详细信息

一、病历摘要患者，男性，23岁，因间断咯血4个月，血尿、蛋白尿1个月入院患旨4个月前无诱因间断出现痰中带血，未诊治，1个月前受凉后发热，T38．2℃、次日咯血加重呈鲜血痰，每次1～2ml，伴咳嗽、胸闷，呼吸困难。外院查血Hb 71．0g／L。尿常规示蛋门＋，尿RBC3～5／HP。

关键词：肾小球基底膜肾功能正常痰中带血呼吸困难蛋白尿血Hb 尿常规咯血

Study on the Reflection Spectra of One Dimensional Plasma Photonic Crystals Having Exponentially Graded Materials

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Plasma Science and Technology 2013年第5期15卷 443-447页

作者： S. PRASAD Vivek.singh A. k. singh Department of Physics Faculty of Science Banaras Hindu University

The transfer matrix method is used to study the effect of the permittivity profile on the reflectivity of a one dimensional plasma photonic crystal having exponentially graded material. The analysis shows that the proposed structure works as a perfect mirror within a certain frequency range. These frequency ranges can be completely controlled by the permittivity profile of a graded dielectric layer. As expected we observed that these frequency ranges are also controlled by plasma parameters.

关键词： graded dielectric layer plasma photonic crystal reflectivity transfer matrixmethod

Intensification of photocatalytic decomposition of water by ultrasound

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Journal of Energy Chemistry 2018年第4期27卷 1183-1188页

作者： Arvind singh A.S.k.Sinha Department of Chemical Engineering and Technology Indian Institute of Technology (Banaras Hindu University)

Photocatalysis of water with and without ultrasound was studied using rGO supported CdS catalyst utilizing visible light. A higher hydrogen production was observed when ultrasound was used. This is attributed to a faster removal of bubbles of hydrogen from the surface of photocatalyst due to the mechanical energy associated with ultrasound overcoming surface tension. It has been further reported that the rate of hydrogen production decreased with time due to reversible deactivation of catalyst. This has been attributed to decrease in rate of hydrogen desorption with time.

关键词： Hydrogen Photocatalysis Ultrasound kinetics

Variation in the Flaring Potential of Different Sunspot Groups During Different Phases of Solar Cycles 23 and 24

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Research in Astronomy and Astrophysics 2024年第2期24卷 144-153页

作者： Abha singh Anurag Chaudhari Gyaneshwar Sharma A.k.singh Department of Physics T.D.P.G.College Jaunpur-222002India Department of Physics Banaras Hindu UniversityVaranasi-221005India

In this present study,we have analyzed different types of X-ray solar flares(C,M,and X classes)coming out from different classes of sunspot groups(SSGs).The data which we have taken under this study cover the duration of 24 yr from 1996 to *** this,we observed a total of 15015 flares(8417 in SC-23 and 6598 in SC-24)emitted from a total of 33780 active regions(21746 in SC-23 and 12034 in SC-24)with sunspot *** defined the flaring potential or flare-production potential as the ratio of the total number of flares produced from a particular type of SSG to the total number of the same-class SSGs observed on the solar *** we studied yearly changes in the flaring potential of different McIntosh class groups of sunspots in different phases of SC-23 and *** addition,we investigated yearly variations in the potential of producing flares by different SSGs(A,B,C,D,E,F,and H)during different phases(ascending,maximum,descending,and minimum)of SC-23 and *** are our findings:(1)D,E,and F SSGs have the potential of producing flares≥8 times greater than A,B,C and H SSGs;(2)The larger and more complex D,E,and F SSGs produced nearly 80%of flares in SC-23 and 24;(3)The A,B,C and H SSGs,which are smaller and simpler,produced only 20%of flares in SC-23 and 24;(4)The biggest and most complex SSGs of F-class have flaring potential 1.996 and 3.443 per SSG in SC-23 and 24,respectively.(5)The potential for producing flares in each SSG is higher in SC-24 than in SC-23,although SC-24 is a weaker cycle than SC-23.(6)The alterations in the number of flares(C+M+X)show different time profiles than the alterations in sunspot numbers during SC-23 and 24,with several peaks.(7)The SSGs of C,D,E,and H-class have the highest flaring potential in the descending phase of both SC-23 and 24.(8)F-class SSGs have the highest flaring potential in the descending phase of SC-23 but also in the maximum phase of SC-24.

关键词： (Sun:)sunspots-Sun flares-Sun activity-Sun magnetic fields-Sun filaments-prominences

Exportin 1 governs the immunosuppressive functions of myeloid-derived suppressor cells in tumors through ERk1/2 nuclear export

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Cellular & Molecular Immunology 2024年第8期21卷 873-891页

作者： Saeed Daneshmandi Qi Yan Jee Eun Choi Eriko katsuta Cameron R.MacDonald Mounika Goruganthu Nathan Roberts Elizabeth A.Repasky Prashant k.singh kristopher Attwood Jianmin Wang Yosef Landesman Philip L.McCarthy Hemn Mohammadpour Department of Immunology Roswell Park Comprehensive Cancer CenterBuffaloNYUSA Department of Cell Stress Biology Roswell Park Comprehensive Cancer CenterBuffaloNYUSA Department of Oncology Yokohama City UniversityGraduate School of MedicineYokohamaJapan Department of Cancer Genetics&Genomics Roswell Park Comprehensive Cancer CenterBuffaloNYUSA Department of Biostatistics&Bioinformatics Roswell Park Comprehensive Cancer CenterBuffaloNYUSA karyopharm Therapeutics NewtonMAUSA Department of Medicine Roswell Park Comprehensive Cancer CenterBuffaloNYUSA

Myeloid-derived suppressor cells(MDSCs)are a main driver of immunosuppression in *** the mechanisms that determine the development and immunosuppressive function of these cells could provide new therapeutic targets to improve antitumor ***,using preclinical murine models,we discovered that exportin 1(XPO1)expression is upregulated in tumor MDSCs and that this upregulation is induced by IL-6-induced STAT3 activation during MDSC ***1 blockade transforms MDSCs into T-cell-activating neutrophil-like cells,enhancing the antitumor immune response and restraining tumor ***,XPO1 inhibition leads to the nuclear entrapment of ERk1/2,resulting in the prevention of ERk1/2 phosphorylation following the IL-6-mediated activation of the MAPk signaling ***,XPO1 blockade in human MDSCs induces the formation of neutrophil-like cells with immunostimulatory ***,our findings revealed a critical role for XPO1 in MDSC differentiation and suppressive functions;exploiting these new discoveries revealed new targets for reprogramming immunosuppressive MDSCs to improve cancer therapeutic responses.

关键词： MDSCs Tumor Exportin 1 MAPk pathway

Effect of organic component(tartrate) addition on cerium nitrate's ability to inhibit corrosion of mild steel in NaCl solution

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Journal of Rare Earths 2024年第10期42卷 1995-2002页

作者： Minakshi koundal Chhaya Sharma A.k.singh Department of Applied Science and Engineering Indian Institute of Technology RoorkeeSaharanpur CampusSaharanpurU.247001India Department of Pulp and Paper Technology Indian Institute of Technology Roorke Saharanpur CampusSaharanpurU.p247001India

Cerium tartrate(CeTar),produced in this study by precipitating cerium nitrate with potassium sodium tartrate(kNaTar),was examined as a corrosion *** loss tests show inhibition efficiency of 71.7% with Ce(NO_(3))_(3) and 88.7% with CeTar inhibitor for one-month exposure to mild steel in 7 g/L NaCl *** inhibition efficiency drops to 28.6% with the fo rmer and remains around 8 7% with the latter inhibitor after six months of *** results from electrochemical testing indicate that the inhibition efficiency decreases by adding cerium ***,the cerium tartrate inhibitor demonstrates a nearly constant inhibition efficiency for up to 30 d,i.e.,≈90%.Electrochemical impedance spectroscopy(EIS) performed in these cases shows the following results:(ⅰ) with cerium nitrate,a film of iron and cerium oxide,which on prolonged exposure diminishes,and(ⅱ) with cerium tartrate,the formation of a bimetallic film(Fe-tartrate-Ce) and a mixture of cerium hydroxide and iro n oxide that protects steel for a longer *** inferences are based on the analyses of scanning electron microscopy/energydispersive X-ray analysis(SEM/EDAX),X-ray diffraction(XRD),Fourier transform infrared spectroscopy(FTIR),X-ray photoelectron(XPS),and Raman spectroscopy results.

关键词： Cerium tartrate Cerium nitrate Corrosion inhibition Mild steel Inhibitor film characterization Rare earths

Petrographic characterization and evolution of the karharbari coals, Talcher Coalfield, Orissa, India

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International Journal of Coal Science & Technology 2016年第2期3卷 133-147页

作者： Alok k. singh Rajiv Gandhi Institute of Petroleum Technology RatapurChowk Rae Bareli 229316 India

In the present study an attempt has been made to carry out the detailed petrographic characterization of the karharbari coals of Talcher coalfield and to reconstruct the paleoenvironment conditions of coal formation using macerals and microlithtotypes as a tool. For these purposes a large number of samples were collected following the pillar sampling method and were subjected to detailed petrographic study. The petrographic observation shows that these coals are vitrinite rich followed by the liptinite and inertinite group of macerals. On microlithotype scale, these coals shows the dominance of the vitrite followed by clarite, vitrinertite and inertite. The concentration of liptite, clarodurite, duroclarite and vitriner- toliptite are insignificant. The vitrinite reflectance ranks the karharbari coal as high volatile bituminous ＇C＇ to high volatile ＇B＇ bituminous. Coal petrography based depositional models suggest peat accumulation in forested telmatic swamp. Moreover, during the time of their evolution, there were alternate phases of oxic and anoxic moor conditions with good tissue preservation.

关键词： Petrography Rank Evolution - karharbari Talcher coalfield

三元混合纳米流体(TiO_(2)-SiO_(2)-MoS_(2)/煤油)流过旋转圆盘时的二次热辐射和Cattaneo-Christov模型

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Journal of Central South University 2023年第4期30卷 1262-1278页

作者： singh shiv Pratap kUMAR Manoj YASEEN Moh RAWAT Sawan kumar Department of Mathematics Statistics and Computer ScienceGovind Ballabh Pant University of Agriculture and TechnologyPantnagar 263145UttarakhandIndia Department of Applied Science Meerut Institute of Engineering and TechnologyMeerut 250005Uttar PradeshIndia Department of Mathematics Graphic Era(Deemed to be University)Dehradun 248002UttarakhandIndia

本文研究了Cattaneo-Christov模型(C-C模型)和对流边界条件下的二次热辐射对三元混合纳米流体(TiO_(2)-SiO_(2)-MoS_(2)/煤油)流过旋转圆盘过程的影响,并研究了Darcy-Forchheimer多孔介质和吸入/注射的影响。比较分析了三元混合纳米流体... 详细信息

本文研究了Cattaneo-Christov模型(C-C模型)和对流边界条件下的二次热辐射对三元混合纳米流体(TiO_(2)-SiO_(2)-MoS_(2)/煤油)流过旋转圆盘过程的影响,并研究了Darcy-Forchheimer多孔介质和吸入/注射的影响。比较分析了三元混合纳米流体(TiO_(2)-SiO_(2)-MoS_(2)/煤油)与混合纳米流体(TiO2-SiO2/煤油)。通过von karman转换将偏微分方程集合转变为常微分方程,并通过MATLAB中的bvp4c函数对其求解。图表结果反映了径向、切向速度和传热速度的变化。讨论了各种参数的影响,包括磁场、Forchheimer数、孔隙率参数、滑移参数、辐射参数、热弛豫、混合对流、吸入/注射、Biot数、发热/热吸收、体积分数。发现较高的辐射值和热弛豫参数可以提高传热速率。本研究将对使用纳米流体的学科领域具有一定的参考价值,如运输过程、旋转的机械系统、协同旋转的涡轮系统、增强型油回收系统、医疗等。

关键词：三元混合纳米流体 Darcy-Forchheimer 多孔介质混合对流吸入/注射二次热辐射发热/吸收滑移效应