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Journal of Ocean Engineering and Science 2022年第3期7卷 203-212页

作者： Archana C.Varsoliwala Twinkle r.singh Applied Mathematics and Humanities Department Sardar Vallabhbhai National Institute of TechnologySurat395007GujaratIndia

This article involves the study of atmospheric internal waves phenomenon,also referred to as gravity *** phenomenon occurs inside the fluid,not on the *** model is based on a shallow fluid hypothesis represented by a system of nonlinear partial differential *** basic assumption of the shallow flow model is that the horizontal size is much larger than the vertical *** internal waves can be perfectly represented by this model as the waves are spread over a large horizontal *** we used the Elzaki Adomian Decomposition Method(EADM)to obtain the solution for the considered model along with its convergence *** Adomian decomposition method together with the Elzaki transform gives the solution in a convergent series without any linearization or *** are built between the results obtained by EADM and HAM to examine the accuracy of the proposed method.

关键词： Atmospheric internal waves Shallow-fluid equations System of nonlinear PDEs Elzaki Adomian decomposition method Climate prediction

Mathematical modeling of tsunami wave propagation at mid ocean and its amplification and run-up on shore

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Journal of Ocean Engineering and Science 2021年第4期6卷 367-375页

作者： Archana C.Varsoliwala Twinkle r.singh Applied Mathematics and Humanities Department Sardar Vallabhbhai National Institute of TechnologySurat 395007GujaratIndia

The paper deals with the study of the mathematical model of tsunami wave propagation along a coast-line of an *** model is based on shallow-water assumption which is represented by a system of non-linear partial differential *** this study,we employ the Elzaki Adomian Decomposition Method(EADM)to successfully obtain the solution for the proposed model for different coastal slopes and ocean *** tsunami wave velocity and run-up height are affected by the coast slope and sea depth are *** Adomian Decomposition Method together with Elzaki transform allows for solutions,without the need of any linearization or perturbation,in the form of rapidly converging *** obtained numerical results for tsunami wave height and velocity are very close match to the real physical phenomenon of tsunami.

关键词： Tsunami wave propagation run-up height Shallow water equations Elzaki Adomian Decomposition Method Convergence analysis

Key networks to create disaster resilient Smart Cities Mission: A case for remodeling India’s Smart Cities Mission to include disaster resilience

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Resilient Cities and Structures

resilient Cities and Structures 2024年第4期3卷 52-62页

作者： Yamini Meduri r.singh Geetha Manoharan Assistant Professor ICFAI Business SchoolICFAI Foundation for Higher EducationIndia research Scholar SR UniversityIndia Assistant Professor School of BusinessSR UniversityIndia

Amidst a concerning surge in urban losses attributed to disasters,this research paper explores the intricate relationship between urban development,disaster mitigation,and resilience emphasizing the significance of addressing disaster vulnerability in urban settings,where a substantial portion of the population faces risks stemming from high population density,limited resilience,and inadequate coping *** study advocates for the integration of disaster resilience principles into the Smart Cities Mission of India,placing particular emphasis on the necessity of developing infrastructure,establishing early warning systems,and fostering community engagement to bolster urban ***,the paper draws comparisons and parallels between the components of smart cities,mitigation strategies,and disaster resilience,illuminating their interconnectedness and potential *** conclusion,the study recommends the incorporation of essential network elements to establish a Smart Cities Mission that is resilient to disasters,ultimately aiming to safeguard urban communities from the adverse impacts of future calamities.

关键词： Disaster resilience Smart city mission Disaster mitigation Disaster management

Floristic composition and structure of the Kibate Forest along environmental gradients in Wonchi,Southwestern Ethiopia

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Journal of Forestry research 2021年第6期32卷 2669-2682页

作者： Misganaw Meragiaw Zerihun Woldu Vegard Martinsen Bal r.singh Department of Plant Biology and Biodiversity Management College of Natural and Computational SciencesAddis Ababa UniversityNational HerbariumP.O.Box 3434Addis AbabaEthiopia Faculty of Environmental Sciences and Natural resource Management Norwegian University of Life SciencesP.O.Box 50031432ÅsNorway

Dry evergreen montane forests in Ethiopia are severely *** status of species composition and structure of forest vegetation are important indicators to understand the trends of threats on local plant *** the present study,we examined the floristic composition and structure of the Kibate Forest,Wonchi Highland,Ethiopia along environmental ***-six(30 m×30 m)plots were established every 100 m interval along altitudinal gradients(2811‒3073 m a.s.l.)in five transect lines for vegetation and environmental data *** total,125 vascular plant species belonging to 104 genera and 52 families were *** species(14%)were endemic to Ethiopia and *** two most dominant families,Asteraceae(29 species)and Lamiaceae(eight species)accounted for 30%of the total number of *** highest number of species(54%)was *** major community types(viz.,Olinia rochetiana-Myrsine melanophloeos,Ilex mitis-Galiniera saxifraga,Erica arborea-Protea gaguedi,and Hagenia abyssinica-Juniperus procera)were *** highest species richness,evenness,diversity,and importance value index were in community types 2 and *** 82%of the species and all endemic taxa except five were recorded in these two community *** most dominant woody species were ***,***,Olea europaea ***,Myrica salicifolia,*** ***,and *** with different patterns of population *** results show that there was a weak correlation between species richness and *** findings confirm that environmental variables both with interactions(such as altitude)and without interactions(such as livestock grazing)significantly(prgrazing by livestock appear to be the main threat in community types 2 and *** management practices and conservation measures such as prohibiting forest clearing and overgrazing and planting indigenous trees through commu

关键词： Endemic species Environmental gradient Floristic composition Kibate Forest Population structure Wonchi

Acute Toxicity and Cardio-respiratory Effects of 2-Deoxy-D-Glucose: A Promising radio Sensitiser

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Biomedical and Environmental Sciences 2006年第2期19卷 96-103页

作者： r.VIJAYArAGHAVAN DEO KUMAr SN DUBE r.singh KS.PANDEY BC.BAG MP.KAUSHIK K.SEKHAr BS.DWArAKANATH T.rAVINDrANATH Defence research and Development Establishment Gwalior-474002 Institute of Nuclear Medicine and Allied Sciences Delhi-110054 India

Objective To evaluate the acute toxicity of 2-deoxy-D-glucose （2DG） by oral （p.o.） and intravenous （i.v.） routes, and also the cardio-respiratory effects following high doses of 2DG in animal models. Methods The LD50 of 2DG （in water） was determined in rats and mice by p.o. route and in mice by i.v. route. The effect of 2-DG （250 mg/kg, 500 mg/kg, and 1000 mg/kg, i.v.） was studied on various cardio-respiratory parameters viz., mean arterial blood pressure, heart rate and respiratory rate in anaesthetised rats. The effect of 2DG （500 mg/kg, 1000 mg/kg, and 2000 mg/kg, p.o.） was also studied on various respiratory parameters viz., respiratory rate and tidal volume in conscious rats and mice using a computer program. results The p.o. LD50 of 2DG was found to be 〉8000 mg/kg in mice and rats, and at this dose no death was observed. The LD50 in mice by i.v. route was found to be 8000 mg/kg. At this dose 2 out of 4 mice died and the death occurred within 6 h. A significant increase in the body weight was observed after p.o. administration of 2DG in rats at 500 mg/kg, 1000 mg/kg, and 2000 mg/kg doses. There was no significant change in the body weight at 4000 mg/kg and 8000 mg/kg by the p.o. route in rats and up to 8000 mg/kg by p.o. as well as i.v. routes in mice. Intravenous administration of 2DG （250 mg/kg, 500 mg/kg, and 1000 mg/kg） in anaesthetised rats showed a time-dependent decrease in the mean arterial blood pressure. There was no change in the heart rate in any of the treatment groups. The tidal volume was not changed significantly by p.o administration in conscious rats, but a significant decrease in the respiratory frequency at 500 mg/kg and 1000 mg/kg doses was observed. In the mice also there was no change in the tidal volume after p.o, administration, but the respiratory frequency decreased significantly at 2000 mg/kg dose. Conclusion 2DG is a safe compound but can cause a fall in the blood pressure and a decrease in respiratory frequency at high doses.

关键词： 2-deoxy-D-glucose Glucose analogue radio sensitizer Acute toxicity Blood pressure Heart rate respiration

Investigation of current collapse and recovery time due to deep level defect traps inβ-Ga2O3 HEMT

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Journal of Semiconductors 2020年第10期41卷 87-90页

作者： r.singh T.r.Lenka r.T.Velpula B.Jain H.Q.T.Bui H.P.T.Nguyen Department of Electronics&Communication Engineering National Institute of Technology SilcharAS788010India Department of Electrical and Computer Engineering New Jersey Institute of TechnologyNewarkNJ07102USA

In this paper,drain current transient characteristics ofβ-Ga2O3 high electron mobility transistor(HEMT)are studied to access current collapse and recovery time due to dynamic population and de-population of deep level traps and interface *** approximately 10 min,and 1 h of recovery time to steady-state drain current value is measured under 1 ms of stress on the gate and drain electrodes due to iron(Fe)–dopedβ-Ga2O3 substrate and germanium(Ge)–dopedβ-Ga2O3 epitaxial layer ***-state current lag is more severe due to widely reported defect trap EC–0.82 e V over EC–0.78 e V,-0.75 e V present in Iron(Fe)-dopedβ-Ga2O3 bulk crystals.A negligible amount of current degradation is observed in the latter case due to the trap level at EC–0.98 e *** is found that occupancy of ionized trap density varied mostly under the gate and gate–source *** investigation of reversible current collapse phenomenon and assessment of recovery time inβ-Ga2O3 HEMT is carried out through 2 D device simulations using appropriate velocity and charge transport *** work can further help in the proper characterization ofβ-Ga2O3 devices to understand temporary and permanent device degradation.

关键词： β-Ga2O3 current collapse degradation HEMT recovery time traps trapping effects

出口商如何在信用证交易中保护自身权益——在了解开证行和保兑行责任义务的基础上操作银行业务

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中国外汇管理 2004年第11期 40-41页

作者： ravi r.singh Mehta 宋悦英国国际行政管理学

出口商为保障在信用证交易下自身的权益，应了解CCP500中对开证行和保兑行所应承担的责任卫务的规定。如果您是一个出口商，开证行修改了信用证，而这个修改对您很不利，在这种情况下您能做什么?您需要了解UCP是否规定了开证行需要征得... 详细信息

出口商为保障在信用证交易下自身的权益，应了解CCP500中对开证行和保兑行所应承担的责任卫务的规定。如果您是一个出口商，开证行修改了信用证，而这个修改对您很不利，在这种情况下您能做什么?您需要了解UCP是否规定了开证行需要征得您对修改的（预先)同意。如果它确需征得您的同意，而您却没有表示您对修改的接受或拒绝而是按原信用证的条款交了单，开证行是否会接受单据付款呢?

关键词：出口商信用证交易开证银行保兑行单据

阿萨姆及大吉岭红茶香气组分与农业措施和加工的关系

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广东茶叶 1992年第1期 33-35页

作者： P.K.Mahanta r.singh 许宁中国农科院茶叶研究所

前言加工的目的是为了取得理想的感官品质,因此,很有必要弄清楚各种组份对感官品质的贡献及在何种条件下形成这些化合物的。由相对比较嫩的鲜叶所制的红茶具有一定的青气,这主要是由反-2-已烯醛,顺-3-己烯醇和己烯醛类等物质所造成的,... 详细信息

前言加工的目的是为了取得理想的感官品质,因此,很有必要弄清楚各种组份对感官品质的贡献及在何种条件下形成这些化合物的。由相对比较嫩的鲜叶所制的红茶具有一定的青气,这主要是由反-2-已烯醛,顺-3-己烯醇和己烯醛类等物质所造成的,诸化台物是由亚油酸和亚麻酸的酶性氧化作用形成的。

关键词：阿萨姆红茶气-质色谱联用大吉岭红茶香气组分农业措施加工

应用双源CT肺血管成像进行肺栓塞的肺叶定量灌注评估

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国际医学放射学杂志 2020年第4期 494-495页

作者： r.singh r.Z.Nie F.Homayounieh B.Schmidt T.Flohr M.K.Kalra 杨淑杰 Department of Thoracic Imaging Massachusetts General Hospital

目的应用双源CT肺血管成像(DECT-PA)对有和无肺栓塞(PE)的病人进行肺叶定量灌注评估。材料与方法本回顾性研究纳入88例成年病人[男38例,女50例;平均

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茶树组织培养:植株再生和在苗圃中的移植生长

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茶叶科学技术 1990年第4期 41-,43页

作者： S.C.Das T.T.Barman r.singh

在含0.5mg/1IBA的滤纸桥系统和液体振荡培养及在土壤:泥炭(1:1)混合物中,获得了根的产生.虽然用液体振荡培养方法其根的发生较快,但这些植株移植在土壤中的生长较差;在土壤和泥炭混合物中直接生根虽然较慢,但将植株定植在大气环境的土... 详细信息

在含0.5mg/1IBA的滤纸桥系统和液体振荡培养及在土壤:泥炭(1:1)混合物中,获得了根的产生.虽然用液体振荡培养方法其根的发生较快,但这些植株移植在土壤中的生长较差;在土壤和泥炭混合物中直接生根虽然较慢,但将植株定植在大气环境的土壤中生长较好.将植株用低温、漫射光和高湿度预处理,能使植株更加强壮,且提高了植株在苗圃中的移植成功率.本研究的目的在于:a)发展一种再生苗有效生根的技术;b)使生根苗成功地移植于土壤的技术标准化;c)使植株适应大田环境.

关键词：组织培养液体振荡再生苗生根苗漫射光大气环境愈伤组织技术标准化塑料钵培苗