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Bro.dband Spectral Pro.erties o. MAXI J1348-630 using Astro.at o.servatio.s

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Research in Astro.o.y and Astro.hysics 2023年第1期23卷 161-170页

作者： Gitika mall Jithesh Vadakkumthani Ranjeev Misra Center fo. Field Theo.y and Particle Physics and Department o. Physics Fudan UniversityShanghai 200438China Department o. Physics and Electro.ics CHRIST(Deemed to be University)Hosur Main RoadBengaluru 560029India Inter-University Centre fo. Astro.o.y and Astro.hysics(IUCAA) PB No.4GaneshkhindPune 411007India

We present bro.dband X-ray spectral analysis o. the black ho.e X-ray binary MAXI J1348-630,perfo.med using five Astro.at *** so.rce was in the so.t spectral state fo. the first three o.servatio.s and in the hard state fo. the last *** three so.t state spectra were mo.eled using a relativistic thin accretio. disk with reflectio. features and thermal *** fitting o. the so.t state spectra co.strained the spin parameter o. the black ho.e a_(*)>0.97 and the disk inclinatio. angle i=32.9_(-0.6)^(+4.1)*** bright and faint hard states had bo.o.etric flux a facto. o.~6 and~10 less than that o. the so.t state *** spectra were fitted using the same mo.el except that the inner disk radius was no. assumed to.be at the last stable ***,the estimated values do.no. indicate large truncatio. radii and the inferred accretio. rate in the disk was an o.der o. magnitude lo.er than that o. the so.t *** with earlier repo.ted tempo.al analysis,Astro. at data pro.ide a co.prehensive picture o. the evo.utio. o. the so.rce.

关键词： black ho.e physics-X-rays binaries-accretio.-accretio. disks-X-rays individual(MAXI J1348-630)

Functio.alizatio. o. carbo. nano.ube yarn by acid treatment

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Internatio.al Jo.rnal o. Smart and Nano.Materials 2014年第1期5卷 34-43页

作者： H.E.Misak R.Asmatulu M.o.malley E.Jurak S.mall Department o. Aero.autics and Astro.autics Air Force Institute of Technology2950 Hobson WayWright-Patterson AFBOH 45433-7765USA Department o. Mechanical Engineering Wichita State University1845 FairmountWichitaKS 67260-0133USA Air Fo.ce Research Labo.ato.y Materials and Manufacturing Directorate2941 Hobson WayWright-Patterson AFBOH 45433-7750USA

Carbo. nano.ube(CNT)yarn was functio.alized using sulfuric and nitric acid so.utio.s in 3:1 vo.umetric *** functio.alizatio. o. CNT yarn with carbo.yl and hydro.yl gro.ps(e.g.,Co.H,Co.–,o.,etc.)was co.firmed by attenuated to.al reflectance spectro.co.y.X-ray diffractio. revealed no.significant change to.the ato.ic in-plane alignment in the CNTs;ho.ever,the co.erent length alo.g the diameter was significantly reduced during functio.alizatio..A mo.pho.o.y change o. wavy extensio.s pro.ruding fro. the surface was o.served after the functio.alizatio. *** fo.ce required to.fracture the yarn remained the same after the functio.alizatio. pro.ess;ho.ever,the linear density was increased(310%).The increase in linear density after functio.alizatio. reduced the ***,the resistivity density pro.uct o. the CNT yarn was reduced significantly(234%)after functio.alizatio..

关键词： carbo. nano.ube yarns functio.alizatio. textile co.ductivity

Design and Implementatio. o. an Extended Co.lectives Library fo. Unified Parallel C

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Jo.rnal o. Co.puter Science & Techno.o.y 2013年第1期28卷 72-89页

作者： Carlo. Teijeiro.Guillermo.L.Tabo.da Juan To.rio.Ramón Do.llo.Jo. C.Mo.rio.Damivn A.mallón Brian Wibecan Co.puter Architecture Gro.p University of A Corua Galicia Superco.puting Center Jlich Superco.puting Centre Institute for Advanced SimulationForschungszentrum Jlich Industry Standard Servers Gro.p Hewlett-Packard Company

Unified Parallel C （UPC） is a parallel extensio. o. ANSI C based o. the Partitio.ed Glo.al Address Space （PGAS） pro.ramming mo.el, which pro.ides a shared memo.y view that simplifies co.e develo.ment while it can take advantage o. the scalability o. distributed memo.y architectures. Therefo.e, UPC allo.s pro.rammers to.write parallel applicatio.s o. hybrid shared/distributed memo.y architectures, such as multi-co.e clusters, in a mo.e pro.uctive way, accessing remo.e memo.y by means o. different high-level language co.structs, such as assignments to.shared variables o. co.lective primitives. Ho.ever, the standard UPC co.lectives library includes a reduced set o. eight basic primitives with quite limited functio.ality. This wo.k presents the design and implementatio. o. extended UPC co.lective functio.s that o.erco.e the limitatio.s o. the standard co.lectives library, allo.ing, fo. example, the use o. a specific so.rce and destinatio. thread o. defining the amo.nt o. data transferred by each particular thread. This library fulfills the demands made by the UPC develo.ers co.munity and implements po.table algo.ithms, independent o. the specific UPC co.piler/runtime being used. The use o. a representative set o. these extended co.lectives has been evaluated using two.applicatio.s and fo.r kernels as case studies. The results o.tained co.firm the suitability o. the new library to.pro.ide easier pro.ramming witho.t trading o.f perfo.mance, thus achieving high pro.uctivity in parallel pro.ramming to.harness the perfo.mance o. hybrid shared/distributed memo.y architectures in high perfo.mance co.puting.

关键词： Unified Parallel C co.lective o.eratio. pro.rammability partitio.ed glo.al address space high perfo.mance co.puting

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碳纳米管纱的时间依赖电性能(英文)

新型炭材料 2015年第3期30卷 207-213页

作者： H.E. Misak S. mall Air Fo.ce Institute o. Techno.o.y Department o. Aero.pace Engineering 2950 Ho.so. Way Wright-Patterso. AFB OH 45433-7765 USA Wichita State University Department o. Meehanieal Engineering 1845 Fairmo.nt Wichita KS 67260-0133 USA

碳纳米管(CNTs)在电力转换领域具有潜在前景。本文表征碳纳米管纱随时间变化对电力的转换性能影响。通过建立I-V关系,结果表明存在3个区域,即线性、非线性和下降区域。线性区域表明呈现低且恒定电阻。当恒定电压处于I-V线性区域时,输出... 详细信息

碳纳米管(CNTs)在电力转换领域具有潜在前景。本文表征碳纳米管纱随时间变化对电力的转换性能影响。通过建立I-V关系,结果表明存在3个区域,即线性、非线性和下降区域。线性区域表明呈现低且恒定电阻。当恒定电压处于I-V线性区域时,输出电流强度不随时间而改变。然而,当恒定电压处于非线性区域时,电流强度以指数级下降后随时间而趋平。在恒电流测试下,电压仅在电流强度处于非线性区时增加。依赖时间的导电性能可通过短路来理解。短路发生在非线性区域的碳纳米管纱中炽热部位,会导致热性能降低。通过热图像、热重分析、扫描电镜和能谱分析等手段对碳纳米管纱进行分析。

关键词：碳纳米管纱电性能时间依赖铁球

Disaster Risk Reductio. Including Climate Change Adaptatio. o.er So.th Asia: Challenges and Ways Fo.ward

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Internatio.al Jo.rnal o. Disaster Risk Science 2019年第1期10卷 14-27页

作者： Rajesh K.mall Ravindra K.Srivastava Tirthankar Banerjee o. Prakash Mishra Diva Bhatt Geetika So.kar Institute o. Enviro.ment and Sustainable Develo.ment Banaras Hindu University DST-Mahamana Centre o. Excellence in Climate Change Research Banaras Hindu University Ministry o. Ho.e Affairs Ministry o. Earth Sciences

So.th Asia is vulnerable to.a variety o. hydro.eteo.o.o.ical hazards, which are o.ten cro.sbo.ndary in nature. Climate change is expected to.influence many o. these hazards. Thus, climate-related risks o.er So.th Asia make disaster risk reductio.(DRR) and climate change adaptatio.(CCA) key po.icy *** there is an increasing co.sensus that DRR including CCA sho.ld be embedded in develo.ment planning. Disaster risk reductio. including CCA has pro.ressively gained impo.tance in glo.al go.ernance. Acro.s So.th Asia, ho.ever, such integratio. is o.ly in a preliminary stage. This review was to.assess the existing status and sco.e o. DRR including CCA in develo.ment pro.ects acro.s So.th Asia, so.that an effective and achievable deliberatio. may be made to.regio.al po.icymakers. A to.al o. 371 pro.ects relevant to.CCA and DRR were *** pro.ect invento.y was diverse in nature with respect to.lo.atio., scale, secto.al fo.us, and strategic ***, India, and Bhutan were o.served to.be pro.ctive in implementing DRR-and CCA-related ***-analysis o. the pro.ect invento.y suggests an urgent need fo. an individual and co.labo.ative co.vergence o. pro.esses fo. DRR and CCA thro.gh po.icies,plans, strategies, and pro.rams.

关键词： Climate change Climate change adaptatio. Disaster risk reductio. SAARC So.th Asia

o.ean-Atmo.phere Interactio. in the Lifecycle o. ENSo.The Co.pled Wave o.cillato.

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Chinese Annals o. Mathematics,Series B 2009年第6期30卷 715-728页

作者： Jialin LIN Dedicated to.Pro.esso. Andrew Majda o. the o.casio. o. his 60th Birthday

To.explain the o.cillato.y nature o. E1 Nino.So.thern o.cillatio. （ENSo., many ENSo.theo.ies emphasize the free o.eanic equato.ial waves pro.agating/reflecting within the Pacific o.ean, o. the discharge/recharge o. Pacific-basin-averaged o.ean heat co.tent. ENSo.signals in the Indian and Atlantic o.eans are o.ten co.sidered as remo.e respo.se to.the Pacific SST ano.aly thro.gh atmo.pheric teleco.nectio.s. This study investigates the ENSo.life cycle near the equato. using lo.g-term o.servatio.al datasets. Space-time spectral analysis is used to.identify and iso.ate the do.inant interannual o.eanic and atmo.pheric wave mo.es asso.iated with ENSo. Nino. SST ano.aly is utilized as the ENSo.index, and lag-co.relatio./regressio. are used to.co.struct the co.po.ite ENSo.life cycle. The pro.agatio., structure and feedback mechanisms o. the do.inant wave mo.es are studied in detail. The results sho. that the do.inant o.eanic equato.ial wave mo.es asso.iated with ENSo.are no. free waves, but are two.o.ean-atmo.phere co.pled waves including a co.pled Kelvin wave and waves are no. co.fined o.ly to.the Pacific a co.pled equato.ial Ro.sby （ER） wave. These o.ean, but are o. planetary scale with zo.al wavenumbers 1-2, and pro.agate all the way aro.nd the equato. in mo.e than three years, leading to.the lo.ger than 3-year perio. o. ENSo. When passing the co.tinents, they beco.e unco.pled atmo.pheric waves. The co.pled Kelvin wave has larger variance than the co.pled ER wave, making the to.al signals do.inated by eastward pro.agatio.. Surface zo.al wind stress （x） acts to.slo. do.n the waves. The two.co.pled waves interact with each o.her thro.gh bo.ndary reflectio. and superpo.itio., and they also.interact with an o.f-equato.ial Ro.sby wave in no.th Pacific alo.g 15N thro.gh bo.ndary reflectio. and wind stress fo.cing. The precipitatio. ano.alies o. the two.co.pled waves meet in the eastern Pacific sho.tly after the SST maximum o. ENSo.and excite a dry atmo.pheric Kelvin wave which

关键词： ENSo o.ean-atmo.phere interactio. Equato.ial waves

Rehabilitatio. o. Mining Sites: The Case o. the Go.a/Sabo.ala Go.d Mine in Senegal Pro.pects fo. Sustainable Develo.ment o. a Mine

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Jo.rnal o. Enviro.mental Pro.ectio. 2021年第10期12卷 784-807页

作者： Dieye Pathé mall Ibrahim Samb Manso.r Ndo.g Ro.ert Institut Africain de Management Dakar Senegal Amado. Makhtar Mbo. University Dakar Senegal Geo.o.y and Hydro.eo.o.y Applied to.Mines and Majo. Civil Engineering Wo.ks Dakar Senegal Enviro.ment Department at Sabo.ala Go.d o.eratio.s Dakar Senegal

The so.theastern part o. Senegal, in West Africa, is ho.e to.the co.ntry’s first majo. go.d mine o.ned by Sabo.ala go.d o.eratio.s SGo. as subsidiary o. Teranga Go.d Co.po.atio. during the timeframe o. this study. As part o. its expansio., the co.pany o.ened and o.erated the Go.a satellite mine fo. 4 years’ explo.tatio.. At the end o. the mine’s life, the autho.ities decided to.clo.e the site. In this co.text, SGo.in co.pliance with its legal, regulato.y and no.mative o.ligatio.s, has co.missio.ed a study o. rehabilitatio. activities fo. a better enviro.mental and so.ial management o. the Go.a go.d mine. This study is a first in Senegal and presents the general framewo.k fo. the rehabilitatio. o. a go.d mine which will allo. scientists to.have several research perspectives in this field. The metho.o.o.ical appro.ch co.sisted o. a participato.y pro.ess o. co.lecting field data and data fro. stakeho.ders directly invo.ved in mine rehabilitatio. and clo.ure;these data were analyzed and co.pled with internatio.al best practices in rehabilitatio., clo.ure, and po.t-mine management. Results o. the selected o.tio.s are based o. kno.n experiences fro. aro.nd the wo.ld, co.pled with analysis o. the SGo.s field activities results and tho.e o.tained fro. the synthesis o. the interview guides fro. the numero.s co.sultatio.s. This synthesis made po.sible to.align them with internatio.al guidelines presented in this do.ument. In this co.text, the aspects related to.the o.en-pit mine equipment, pro.essing facilities and related infrastructure were a particular interest to.the vario.s stakeho.ders. Thus, the fo.lo.ing rehabilitatio. o.tio.s were retained by the gro.p co.stituted by the po.ulatio.s: 1) Backfilling pits, fo. cultivatio. practices and develo.ment o. agribusiness and the establishment o. grazing land fo. livesto.k;2) Setting up water sto.age basins fo. the sustainable develo.ment o. certain activities aro.nd the mine and aquifer recharge while respecting the pro.ectio.

关键词： Rehabilitatio. Mine Clo.ure Go.a Sabo.ala Enviro.ment Sustainable Develo.ment

Ro.ust State Feedback H_∞Co.tro. fo. Dynamic Biped Ro.o. Based o. T-S Fuzzy Mo.el

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武汉理工大学学报 2006年第S3期28卷 951-955页

作者： HUAI Chuangfeng FANG Yuefa (Department o. Mechanical Engineering,Beijing Jiao.o.g University,Beijing 10044,E-mall: hcf811225@***) Department o. Mechanical Engineering Beijing Jiaotong UniversityBeijing 10044China

T-S fuzzy mo.el was applied to.describe no.linear system and glo.al fuzzy mo.el was expressed by the fo.m o. uncertain *** o. ro.ust state feedback H_∞co.tro. strategy,designed a glo.al asympto.ic steady fuzzy *** co.tro. system can use the experimental input-o.tput data pairs fo. the biped ro.o. learning and walking with dynamic *** is pro.ed by simulatio. result that ro.ust state feedback H_∞co.tro. metho. based o. T-S fuzzy mo.el can effectively restrain the effect o. mo.el uncertainties and external disturbance acting o. biped *** these wo.ks,we sho.ed the satisfacto.y perfo.mance o. jo.nt tracking witho.t any chattering.

关键词： ro.ust H_∞co.tro. state feedback T-S fuzzy mo.el biped walking ro.o. fuzzy system

Hydro.eo.hemical Characterizatio. o. Aquifer Systems and Surface Water/Gro.ndwater Relatio.s in the Lo.er Senegal River Valley

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Jo.rnal o. Geo.cience and Enviro.ment Pro.ectio. 2024年第6期12卷 232-254页

作者： Abibato. Camara Fato. Dio. Ngo. Mo.tar Diaw Cheikh Tidiane Wade Ibrahima mall Department o. Geo.o.y Cheikh Anta Diop University Dakar Senegal Department o. Applied Geo.ciences and Enviro.ment Amadou Mahtar Mbow University Dakar Senegal

This study assesses the chemical quality o. water reso.rces in the Lo.er Senegal River valley, based o. 35 samples co.lected in No.ember 2022. Majo. io. co.centratio.s in surface water and gro.ndwater were analyzed using classical geo.hemical interpretatio. diagrams (Piper, GIBBS, etc.) and multivariate geo.tatistical analyses, including hierarchical cluster analysis (HCA) and principal co.po.ent analysis (PCA). The results revealed three types o. facies: Ca-Mg-HCo.-type facies, characteristic o. po.rly mineralized waters such as surface waters and gro.ndwater fro. dune fo.matio.s and the alluvial plain clo.e to.the hydraulic axis;Na-Cl type facies asso.iated with well waters lo.ated in the alluvial plain that tap Inchirian o. No.akcho.tian shallo. reservo.rs and Maastrichtian deep bo.eho.e waters;and mixed Ca-Cl and Na-HCo. type facies o.served in certain flo.dplain and dune reservo.rs. The results sho.ed a stro.g co.relatio. between so.ium, chlo.ides, bro.ides, and electrical co.ductivity, indicating a significant co.tributio. o. these io.s to.gro.ndwater mineralizatio.. The vario.s so.rces o. water mineralizatio. include mixing pro.esses between surface water o. rainwater, o. calcite o. do.o.ite disso.utio. pro.esses (fo. weakly mineralized waters), basic exchanges o. inverse basic exchanges between the aquifer and the water table (fo. mo.erately mineralized waters), and evapo.atio. pro.esses, halite disso.utio., and paleo.alinity during perio.s o. marine transgressio. and regressio. (fo. highly mineralized waters). The study also.highlighted the high vulnerability o. the alluvial aquifer to.po.lutio. fro. intensive irrigated agriculture, as significant quantities o. sulfates and nitrates were measured in so.e samples. These results also.highlight the impo.tance o. water quality management in the Lo.er Senegal Valley, particularly as co.cerns the pro.ectio. o. the alluvial aquifer against po.lutio. fro. irrigated agriculture.

关键词： Senegal River Valley Gro.ndwater Po.lutio. Agriculture Alluvial Aquifer