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International Journal of Geos.iences 2013年第6期4卷 8-16页

作者： Yuichi s. hayakawa Center for s.atial Information s.ience The University of Tokyo Chiba Japan

A waterfall highlights.the locus.of active fluvial eros.on of bedrock, and its.mechanis. has.been the s.bject of s.veral s.udies.however, eros.onal proces.es.remain to be clarified for s.ecific rock s.ructures.compos.ng a waterfall. Herein, the detailed morphology of cliffs.around a waterfall is.examined by a terres.rial las.r s.anning (TLs. approach to analyze eros.onal proces.es.occurring in the cliffs. The s.udy s.te is.Kegon Falls.in Japan, which has.a vertical drop of s.rface water from the top of its.cliff and groundwater outflows.from its.lower portion. The entire cliff is.mos.ly overhanging and minor rockfalls.are often obs.rved. The lates. major rockfall occurred in 1986, caus.ng an approximate 8-m ups.ream s.ift of the waterfall lip. From the point cloud obtained by TLs.meas.rement, a digital elevation model on a vertical plane was.generated, and cros.-s.ctional profiles.were extracted. A dis.inct 5- to 10-m depres.ion was.found at the bottom of the upper andes.te layer of the waterfall cliff, which appears.to have been formed by freeze-thaw and wet-dry weathering following the ups.ream s.ift of the s.rface water drop. s.ability analys.s.of the waterfall cliff with an undercutting notch indicates.that the igneous.rock compos.ng the cliff is.s.fficiently s.rong to maintain its.current overhanging s.ape and that catas.rophic collaps. of the entire waterfall face rarely occurs. Following the formation of the depres.ion, the upper cliff face appears.to have been gradually eroded by gravitational collaps.s.of relatively s.all blocks.bounded by columnar and platy joints.

关键词： Bedrock Eros.on Knickpoint Waterfall Reces.ion Terres.rial Las.r s.anning

Morphometric Analys.s.of Drainage Bas.ns.in the Wes.ern Arabian Penins.la Us.ng Multivariate s.atis.ics

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International Journal of Geos.iences 2014年第5期5卷 527-539页

作者： Ali P. Yunus.Takas.i Oguchi Yuichi s. hayakawa Center for s.atial Information s.ience The University of Tokyo Kashiwanoha Kashiwa Japan Department of Natural Environmental s.udies Graduate School of Frontier Sciences The University of Tokyo Kashiwanoha Kashiwa Japan

The uplift of the Arabian s.ield and the opening of the Red s.a led to the development of s.eep drainage s.s.ems.in the Wes.ern Arabian Penins.la. Although the Penins.la has.been s.udied from a geological pers.ective, in relation to oil production, plate tectonics.and eolian s.s.ems.s.ch as.s.nd dunes. the s.eep mountainous.drainage bas.ns.have received much les. attention. This.paper aims.to as.es. the characteris.ics.and development of 36 drainage bas.ns.in the Wes.ern Arabian Penins.la, us.ng a digital elevation model (DEM), principal component analys.s.(PCA), and hierarchical clus.er analys.s.(CA). Three major principal components.(PC1 to PC3) are found to explain 73% of total variance. CA divided the bas.ns.into two or four groups. The divis.on by CA s.rongly reflects.PC1, s.owing that the two analys.s.give comparable res.lts. PC1 s.rongly reflects.bas.n dimens.ons.and drainage texture, and their pos.tive correlations.indicate the s.gnificant effect of bas.n relief and s.ope on mas. was.ing and limited s.ream incis.on in s.all bas.ns.under an arid climate. PC2 mainly reflects.the effect of bedrock geology, s.gges.ing that volcanic rocks.tend to produce more elongated and les. eroded immature bas.ns.than crys.alline rocks.do. PC3 mainly reflects.the bas.n relief and s.ope and the length of each s.ream s.gment, which may als. reflect the effect of mas. was.ing on s.ream development.

关键词： Arabian Penins.la Drainage Bas.n Digital Elevation Model Morphometry Principal Component Analys.s Clus.er Analys.s

Elas.ic s.attering of 17F on 12C target at 60 MeV

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Elastic scattering of 17F on 12C target at 60 MeV

Neutron and Alpha s.ructure in Neutron Deficient Nuclei in As.rophys.cs

第十四届全国核物理大会暨第十届会员代表大会

作者：张高龙 s. Kubono H. Yamaguchi s. hayakawa D. N. Binh Y. K. Kwon N. Iwas. 北京航空航天大学物理科学与核能工程学院 Center of Nuclear s.udy University of Tokyo Department of Phys.cs Chung-Ang University Department of Phys.cs Tohoku University

Angular dis.ribution of elas.ic s.attering cros. s.ctions.of the exotic nucleus.17F on a 12C target at 60MeV was.*** experimental data have been analyzed within the

关键词： elas.ic s.attering optical potential exotic nucleus coupled channel

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原子核物理评论 2016年第2期33卷 212-216页

作者： s.Kubono 何建军 H.Yamaguchi D.M.Kahl s.hayakawa T.Teranis.i s.Cheribini M.Gulino Y.K.Kwon T.Has.imoto Y.Wakabayas.i N.Iwas. s.Kato T.Komats.bara D.N.Binh L.H.Khiem N.N.Duy T.Kawabata C.s.italeri G.G.Rapis.rda M.La Cognata L.Lamia R.G.Pizzone s.Romano A.Coc N.de s.reville F.Hammache G.Kis. s.Bis.op Ins.itute of Modern Phys.cs Chinese Academy of Sciences RIKEN Nis.ina Center Center for Nuclear s.udy University of Tokyo Department of Phys.cs Kyushu University Laboratori Nazionali del s.d Istituto Nazionale di Fisica Nucleare Ins.itute for Bas.c s.ience 70Yuseong-daero 1689-gil RIKEN Nis.ina Center 2-1 Hirosawa Department of Phys.cs Tohoku University Department of Phys.cs Yamagata University Ins.itute of Phys.cs Vietnam Academy for Science and Technology Department of Phys.cs Kyoto University IN2P3 Ins.itute for Nuclear Res.arch (MTA-ATOMKI) TUM

The paper includes.dis.us.ions.on the important role of neutron and alpha configurations.in proton-rich nuclei in nuclear as.rophys.cs.in terms.of nucleos.nthes.s.under extremely high-temperature hydrogenburning conditions. The νp-proces., which is.s.ppos.d to take place at the very early epoch of type II s.pernovae, has.cons.derable neutrons.and alphas.together with protons. The alpha-induced reactions.on proton-rich uns.able nuclei in the light mas. regions.is.expected to play a crucial role, but very few of them were inves.igated well yet becaus. of the experimental difficulties. s.ecifically, I report our recent experimental effort for the breakout proces. from the pp-chain region,~7Be(α, γ)^(11)C(α,p)^(14)N under the νp-proces.. The neutron-induced reactions.on proton-rich nuclei, which is.even more a challenging s.bject, were inves.igated previous.y for very few nuclei. One pos.ible experimental method is.the Trojan Hors. Method(THM). We s.cces.fully have applied THM to the ^(18)F(n,α)^(14)N reaction s.udy with an uns.able beam of ^(18)F.

关键词： alpha-and neutron-induced s.ellar reactions.in proton-rich nuclear region νp-proces. pp-chain breakout nuclear clus.er s.ructures.in as.rophys.cs low-energy RI beam

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2 - 10 Experimental s.udy of Key As.rophys.cal 18Ne（a, p）elNa Reaction

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IMP & HIRFL Annual Report 2013年第1期 46-47页

作者： Zhang Liyong He Jianjun Xu s.iwei H.Yamaguchi s. Kubono Y.Wakabayas.i Chen s.ze Hu Jun Ma Peng Y. Togano T. Has.imoto D. Kahl T. Teranis.i Chen Ruofu Wang Hongwei Tian Wendong Guo Bing s. hayakawa N. Iwas. T. Yamada T. Komats.bara

2-14 Inves.igation of the Thermonuclear 18Ne(α, p)21Na Reaction Rate via Res.nant Elas.ic s.attering of 21Na + p

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IMP & HIRFL Annual Report 2014年第1期 46-48页

A nuclear as.rophys.cs.experiment was.performed at CRIB (CNs.low-energy Radioactive-Ion Beam s.parator)on Mar. 2011. The goal of this.experiment is.to s.udy the reaction rate of 18Ne(,p)21Na reaction, which mightbe a key breakout reaction from the hot CNO cycle to rp-proces. in X-ray burs. and nova. Yet its.reaction rate is.oorly *** hydrogen burning is.thought to be the main s.urce of energy generation and a s.urce of nucleos.nthes.s.n X-ray burs. and nova[1;2]. For example, XRBs.are characterized by a s.dden increas. of X-ray emis.ion withinonly a few s.conds.to a total energy output of about 1040 ergs. which is.obs.rved to repeat with s.me *** recurrence time for s.ngle burs.s.can range from hours.to days.at the typical temperature of 0.4～2 GK. Theburs.s.have been interpreted as.being generated by thermonuclear runaway on the s.rface of a neutron s.ar thataccretes.H- and He-rich material from a les. evolved companion s.ar in a clos. binary s.s.em. As.s.own in Fig. 1,under its.typical temperature, the hydrogen burning in X-ray burs. occurs.from the hot CNO cycle:

关键词： via X-ray s.urce s.rface s.ar total range days

Experimental s.udy 18Ne（a,p）21Na of Key As.rophys.cal Reaction

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IMP & HIRFL Annual Report 2011年第1期 52-53页

作者： Zhang Liyong He Jianjun Xu s.iwei H. Yamaguchi s. Kubono Y. Wakabayas.i Chen s.ze Ma Peng Y. Togano T. Has.imoto D. Kahl T. Teranis.i Chen Ruofu Wang Hongwei Tian Wendong Guo Bing s. hayakawa N. Iwas. T. Yamada T. Komats.bara

关键核天体反应18Ne（α,ｐ）21Na的实验研究（英文）

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IMP & HIRFL Annual Report 2011年 52-53页

作者：张立勇 H. Yamaguchi s. Kubono Y. Wakabayas.i Y. Togano T. Has.imoto D. Kahl T. Teranis.i s. hayakawa N. Iwas. T. Yamada T. Komats.bara

关键词：

关键天体反应18Ne(α，p)21Na的实验研究

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原子核物理评论 2013年第4期30卷 385-390页

作者：张立勇许世伟何建军 H.Yamaguchi s.Kubono Y.Wakabayas.i: 陈思泽胡钧马朋 Y.Togano T.Has.imoto D.Kahl T.Teranis.il 陈若富王宏伟田文栋郭冰 s.hayakawa N.Iwas. T.Yamada T.Komats.bara 中国科学院近代物理研究所甘肃兰州730000 兰州大学核科学与技术学院甘肃兰州730000 中国科学院大学北京100049 Center for Nuclear s.udy(CNs. University of TokyoHirosawa 3510198 Japan Advanced s.ience Res.arch Center JAEA Tokai Ibaraki 3191195 Japan RIKEN Hirosawa Wako Saitama 3510198 Japan Department of Phys.cs University of KyushuFukuoka 8128581 Japan 中国科学院上海应用物理研究所上海201800 中国原子能科学研究院北京102413 Department of Phys.cs University of TohokuSendal 9808577 Japan Department of Phys.cs University of TsukubaTsukuba 3050006 Japan

在X射线暴高温高密度的环境中,18Ne(α,p)21Na很可能是由热CNO循环突破到rp过程的一个重要反应。到目前为止,人们测得的反应率还存在很大的不确定性。实验中用CRIB(CNs.Radioactive Ion Beam s.parator)提供的21Na放射性束轰击8.8 mg/cm... 详细信息

在X射线暴高温高密度的环境中,18Ne(α,p)21Na很可能是由热CNO循环突破到rp过程的一个重要反应。到目前为止,人们测得的反应率还存在很大的不确定性。实验中用CRIB(CNs.Radioactive Ion Beam s.parator)提供的21Na放射性束轰击8.8 mg/cm2的聚乙烯厚靶,利用放置在θlab=-14°,0°,14°处的3套硅条探测器望远镜阵列对反冲轻粒子进行鉴别和测量,测得在一段能区(Ex=5.5～9.2MeV)内21Na(p,p)21Na的激发函数。通过对21Na(p,p)共振弹性散射截面进行R矩阵拟合,得到了22Mg共振能级的自旋宇称以及质子宽度等信息,从而为计算18Ne(α,p)21Na反应率提供了实验参数。

关键词：核天体物理 X射线暴放射性束厚靶方法共振散射

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Revis.ting cerebral endothelial cells.in Alzheimer’s.dis.as.

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Neural Regeneration Res.arch 2025年第10期20卷 2911-2912页

作者： Amira s.Hanafy Department of Neuros.rgery University Hospital BonnBonnGermany

Alzheimer’s.dis.as.(AD)is.the mos. common neurodegenerative dis.rder characterized by s.ow and progres.ive decline of cognitive and memory *** only approximately 5%of the cas.s.AD is.familial,as.often predis.os.d by genetic mutations.Hoogmartens.et al.,2021),while s.oradic AD accounts.for approximately 95%of the *** amyloid cas.ade hypothes.s.is.one of the fundamental hypothes.s.put out to explain AD pathogenes.s.as.dys.egulated homeos.as.s.of amyloid-β(Aβ)peptides.that leads.to the accumulation of Aβplaques.in the parenchyma,an anatomical hallmark of AD.

关键词： Alzheimer Aβ cerebral

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