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Earth and Planetary Physics 2022年第1期6卷 42-51页

作者： Xiao-Dong Wang B.Klecker G.Nicolaou S.Barabash m.wieser P.Wurz A.Galli F.Cipriani Y.Futaana Swedish Institute of Space Physics KirunaSweden max-Planck Institute für extraterrestrische Physik GarchingGermany Physics Institute University of BernBernSwitzerland ESA/ESTEC Research and Scientific Support DepartmentNoordwijkThe Netherlands

Energetic neutral atoms(ENAs)are produced by the neutralization of energetic ions formed by shock-accelerated gradual solar energetic particle events(SEP).These high-energy ENAs(HENAs)can reach the Earth earlier than the associated SEPs and thus can provide information about the SEPs at the lower *** HENA properties observed at Earth depend on the properties of the coronal mass ejection(CmE)-driven shocks that accelerate the *** a model of HENA production in a shock-accelerated SEP event,we semi-quantitatively investigate the energy-time spectrum of HENAs depending on the width,propagation speed,and direction of the shock,as well as the density and ion abundances of the lower *** to the baseline model parameters,the cases with a wider shock width angle or a higher coronal density would increase the HENA flux observed at the Earth,while the case with an Earthpropagating shock shows a softened HENA *** comparison of expected HENA fluxes in different cases with a flight-proven ENA instrument suggests that solar HENAs can feasibly be monitored with current technologies,which could provide a lead time of 2−3 hours for SEPs at a few *** propose that monitoring of solar HENAs could provide a new method to forecast shock-driven SEP events that are capable of significant space weather impacts on the near-Earth environment.

关键词： solar energetic particles energetic neutral atoms space weather numerical simulation

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Ion-bunch energy acoustic tracing by modulation of the depth-dose curve

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High Power Laser Science and Engineering 2023年第3期11卷 86-93页

作者： A.Praßelsperger F.Balling H.-P.wieser K.Parodi J.Schreiber Fakultät für Physik Ludwig-Maximilians-Universität MünchenGarchingGermany

Characterizing exact energy density distributions for laser-accelerated ion bunches in a medium is challenging due to very high beam intensities and the electro-magnetic pulse emitted in the laser-plasma ***-bunch energy acoustic tracing allows for reconstructing the spatial energy density from the ionoacoustic wave generated upon impact in *** have extended this approach to tracing ionoacoustic modulations of broad energy distributions by introducing thin foils in the water reservoir to shape the acoustic waves at distinct points along the depth-dose ***,we present first simulation studies of this new detector and reconstruction approach,which provides an online read-out of the deposited energy with depth within the centimeter range behind the ion source of state-of-the-art laser-plasma-based accelerators.

关键词： ion-bunch energy acoustic tracing ion detector ionoacoustics laser-ion acceleration

Novel approach for tailored diffusion media properties and PEm fuel cell performance

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Novel approach for tailored diffusion media properties and P...

第九届全国氢能学术会议

作者： P.Nicotera m.mathias R.Evans C.wieser D.Baker General motors Corporation

＜正＞Carbon fiber papers（CFPs） possess several structure-specific requirements for application as gas diffusion media（Dm） in PEm fuel *** CFP must demonstrate sufficient bending modulus,shear modulus,and incompressibility in order to achieve acceptably low flow field channel *** flow field-to-CFP electrical contact resistance must also be minimized. Furthermore,the microporous layer（mPL） coating on the CFP should penetrate into the

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火星等离子体环境探测

空间科学学报 2009年第5期29卷 462-466页

作者：李磊张爱兵孔令高王世金孙越强朱光武 S Barabash m.wieser H Anderson 中国科学院空间科学与应用研究中心北京100190 Swedish Institute of Space Physics

萤火一号(YH-1)探测器将对火星空间环境进行独立而深入的探测研究,探测各空间区域的等离子体特性及其对太阳风扰动的响应,以及火星离子逃逸过程,研究太阳风对火星水体损失的影响。为了实现这一目标,萤火一号搭载了等离子体探测包,包括2... 详细信息

萤火一号(YH-1)探测器将对火星空间环境进行独立而深入的探测研究,探测各空间区域的等离子体特性及其对太阳风扰动的响应,以及火星离子逃逸过程,研究太阳风对火星水体损失的影响。为了实现这一目标,萤火一号搭载了等离子体探测包,包括2个离子分析器和1个电子分析器,具有较高的时间分辨率、能量分辨率,可以探测0.02～10 keV的离子、电子,同时能够对粒子的入射方向及1～44 au(1 au=9.1095×10^(-31)kg)质量范围内的离子成分进行分辨。本文阐述了萤火一号等离子体探测的科学意义,并对等离子体包的工作原理,仪器设计进行了介绍。

关键词：火星等离子体空间探测

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癫痫患者前丘脑深部脑刺激后的皮质活动

世界核心医学期刊文摘(神经病学分册) 2006年第4期 44-45页

作者： Zumsteg D. Lozano A.m. wieser H.G. Wennberg R.A. 谢琰臣 Krembil Neuroscience Centre Toronto Western Hospital University of Toronto 399 Bathurst Street Toronto Ont. M5T 2S8 Canada

Objective: We studied the relation between thalamic stimulation parameters and the morphology, topographic distribution and cortical sources of the cerebral responses in patients with intractable epilepsy undergoing deep brain stimulation (DBS)of the thalamus. methods: Bipolar and monopolar stimuli were delivered at a rate of 2 Hz to the anterior (AN, four patients), the dorsomedian (Dm, four patients), and the centromedian nucleus (Cm, one patient) using the programmable stimulation device (medtronic ITREL II). Source modeling was carried out by using statistical non-parametric mapping of low-resolution electromagnetic tomography (LORETA) values. Results: All patients demonstrated reproducible time-locked cortical responses (CRs) consisting of a sequence of components with latencies between 20 and 320 ms. The morphology of these CRs, however, was very heterogeneous, depending primarily on the site of stimulation. Following AN stimulation, cortical activation was most prominent in ipsilateral cingulate gyrus, insular cortex and lateral neocortical temporal structures. Stimulation of the Dm mainly showed activation of the ipsilateral orbitofrontal and mesial and lateral frontal areas, but also involvement of mesial temporal structures. Stimulation of the Cm showed a rather diffuse (though still mainly ipsilateral) increase of cortical activity. The magnitude of cortical activation was positively related to the strength of the stimulus and inversely related to the impedance of the electrode. Conclusions: The pattern of cortical activation corresponded with the hodology of the involved structures and may underscore the importance of optimal localization of DBS electrodes in patients with epilepsy. Significance: The method of analyzing sources of CRs could potentially be a useful tool for titration of DBS parameters in patients with electrode contacts in clinically silent areas. Furthermore, the inverse relation of the cortical activation and the impedance of the electr

关键词：深部脑刺激 DBS 癫痫患者皮质丘脑间脑

心肌活力延迟增强成像:低剂量大螺距CT与mRI的比较

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国际医学放射学杂志 2011年第6期 607-608页

作者： R. Goetti G. Feuchtner P. Stolzmann O.F. Donati m. wieser A. Plass 张芳 Department of Radiology University Hospital ZurichRaemistrasse 100 CH-8091 Zurich Switzerland. USA

目的以mRI为参照标准评价大螺距心脏延迟增强CT评估心肌活性的准确性。方法24例平均年龄(66.9±9.2)岁的冠状动脉疾病病人进行128层双源CT(前瞻性心电触发)及1.5TmRI心脏延迟增强检查。2名医师评估每节段心肌透壁情况,测量梗死心肌及健... 详细信息

目的以mRI为参照标准评价大螺距心脏延迟增强CT评估心肌活性的准确性。方法24例平均年龄(66.9±9.2)岁的冠状动脉疾病病人进行128层双源CT(前瞻性心电触发)及1.5TmRI心脏延迟增强检查。2名医师评估每节段心肌透壁情况,测量梗死心肌及健康心肌信号强度(mRI)或

关键词： CT 双源大螺距心肌活性延迟增强

Latest Achievements on Climate Change and Forest Interactions in a Polluted Environment

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Open Journal of Forestry 2014年第3期4卷 197-207页

作者： Giulia Carriero Juha-Pekka Tuovinen Nicholas Clarke Giorgio matteucci Rainer matyssek Gerhard wieser Teis Norgaard mikkelsen Richard Fischer Pavel Cudlin Yusuf Serengil Fabio Boscaleri Carlo Calfapietra Zhaozhong Feng Elena Paoletti IPP-CNR Institute for Plant Protection-National Research CouncilFlorenceItaly Finnish meteorological Institute HelsinkiFinland Norwegian Forest and Landscape Inst. AsNorway ISAFOm-CNR Institute for Agricultural and Forestry Systems in the mediterranean RendeItaly Ecophysiology of Plants Technische Universitat MünchenFreisingGermany Federal Office and Research Centre for Forests InnsbruckAustria Technical University of Denmark Department of Chemistry&Biochemistry EngineeringLyngbyDenmark Johann Heinrich von Thunen-Institute For World ForestryHamburgGermany Global Change Research Centre Academy of Science of the Czech RepublicCeske BudejoviceCzech Republic Istanbul University Orman FakultesiIstanbulTurkey Regione Toscana via di Novoli FlorenceItaly IBAF-CNR Institute of Biology and Agro-ForestryPoranoItaly State Key Laboratory of Urban and Regional Ecology Research Center for Eco-Environmental SciencesChinese Academy of SciencesBeijingChina

The COST Action FP0903 “Climate Change and Forest mitigation and Adaptation in a Polluted Environment (mAFor)” involved 29 countries and created a platform for information exchange with experts from different fields, with the following main objectives: 1) to increase understanding of the state and potential of forest mitigation and adaptation to climate change in a polluted environment and 2) to reconcile process-oriented research, long-term monitoring and applied modelling at comprehensive forest research sites. In particular, mAFor translated the existing European knowledge on climate and air pollution dynamics into prospects for forest research and monitoring, with focus on the carbon, ozone, nitrogen and water budgets. The aim of this paper is to summarize scientific activities and achievements of mAFor: the creation of a meta-database for highlighting the available data and integrating the information from European forest research/monitoring networks;the development of a new concept of forest sites for research and monitoring (Supersites);the identification of the main knowledge gaps;and the definition of priorities for forest adaptation to climate change in a polluted environment. The action also increased European capacity building in this sector by organizing five conferences, granting 64 short-term scientific missions, organizing four training schools and publishing more than 100 papers.

关键词： Air Pollution Climate Change Forests Supersites COST FP0903 Action

Ion-bunch energy acoustic tracing by modulation of the depth-dose curve

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High Power Laser Science and Engineering 2023年第3期 90-97页

作者： A.Pra?elsperger F.Balling H.-P.wieser K.Parodi J.Schreiber Fakult?t für Physik Ludwig-Maximilians-Universit?t München

Characterizing exact energy density distributions for laser-accelerated ion bunches in a medium is challenging due to very high beam intensities and the electro-magnetic pulse emitted in the laser±plasma interaction. Ion-bunch energy acoustic tracing allows for reconstructing the spatial energy density from the ionoacoustic wave generated upon impact in water. We have extended this approach to tracing ionoacoustic modulations of broad energy distributions by introducing thin foils in the water reservoir to shape the acoustic waves at distinct points along the depth-dose curve. Here, we present first simulation studies of this new detector and reconstruction approach, which provides an online read-out of the deposited energy with depth within the centimeter range behind the ion source of state-of-the-art laser-plasma-based accelerators.

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