检索结果-南通市图书馆

Optimizing laser coupling,matter heating,and particle acceleration from solids using multiplexed ultraintense lasers

引用

Matter and Radiation at Extremes 2024年第4期9卷 16-28页

作者： Weipeng Yao Motoaki Nakatsutsumi Sébastien Buffechoux Patrizio Antici Marco Borghesi Andrea Ciardi Sophia N.Chen Emmanuel d’Humières laurent Gremillet Robert Heathcote Vojtech Horny Paul McKenna mark N.Quinn Lorenzo Romagnani Ryan Royle Gianluca Sarri Yasuhiko Sentoku Hans-Peter Schlenvoigt Toma Toncian Olivier Tresca Laura Vassura Oswald Willi Julien Fuchs LULI-CNRS CEASorbonne UniversitéEcole PolytechniqueInstitut Polytechnique de ParisF-91128 Palaiseau CedexFrance Sorbonne Université Observatoire de ParisUniversité PSLCNRSLERMAF-75005 ParisFrance INRS-EMT 1650 BoulLionel-BouletVarennesQuebec J3X 1S2Canada Center for Plasma Physics School of Mathematics and PhysicsQueen’s University BelfastBelfast BT71NNUnited Kingdom “Horia Hulubei”National Institute for Physics and Nuclear Engineering 30 Reactorului StreetRO-077125 Bucharest-MagureleRomania University of Bordeaux Centre Lasers Intenses et ApplicationsCNRSCEAUMR 5107F-33405 TalenceFrance CEA DAMDIFF-91297 ArpajonFrance Université Paris-Saclay CEALMCE91680 Bruyères-le-ChatelFrance Central Laser Facility STFC Rutherford Appleton LaboratoryDidcotUnited Kingdom SUPA Department of PhysicsUniversity of StrathclydeGlasgow G40NGUnited Kingdom Department of Physics University of NevadaRenoNevada 89557USA Institute of Laser Engineering Osaka University2-6 YamadaokaSuitaOsaka 565-0871Japan Institut fur Laser und Plasmaphysik Heinrich Heine Universitat DusseldorfDusseldorfGermany

Realizing the full potential of ultrahigh-intensity lasers for particle and radiation generation will require multi-beam arrangements due to technology ***,we investigate how to optimize their coupling with solid ***,we show that overlapping two intense lasers in a mirror-like configuration onto a solid with a large preplasma can greatly improve the generation of hot electrons at the target front and ion acceleration at the target *** underlying mechanisms are analyzed through multidimensional particle-in-cell simulations,revealing that the self-induced magnetic fields driven by the two laser beams at the target front are susceptible to reconnection,which is one possible mechanism to boost electron *** addition,the resistive magnetic field generated during the transport of the hot electrons in the target bulk tends to improve their *** simulations also indicate that such effects can be further enhanced by overlapping more than two laser beams.

关键词： laser acceleration particle

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Grain boundary effects in high-temperature liquid-metal dealloying: a multi-phase field study

引用

npj Computational Materials 2023年第1期9卷 1039-1049页

作者： Nathan Bieberdorf mark Asta laurent Capolungo Department of Materials Science and Engineering University of CaliforniaBerkeleyCA 94720USA Materials Science and Technology Division Los Alamos National LaboratoryLos AlamosNM 87545USA

A multi-phase field model is employed to study the microstructural evolution of an alloy undergoing liquid dealloying,specifically considering the role of grain boundaries.A semi-implicit time-stepping algorithm using spectral methods is implemented,which enables simulating large 2D and 3D domains over long time scales while still maintaining a realistic interfacial *** reveal a mechanism of coupled grain–boundary migration to maintain equilibrium contact angles with the topologically complex solid–liquid interface,which locally accelerates diffusion-coupled growth of a liquid channel into the *** mechanism asymmetrically disrupts the ligament connectivity of the dealloyed structure in qualitative agreement with published experimental *** grain boundary migration-assisted corrosion channels form even for precursors with small amounts of the dissolving alloy species,below the parting *** activation of this grain boundary dealloying mechanism depends strongly on grain boundary mobility.

关键词： alloying grain alloy

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Aromatic alcohols oxidation and hydrogen evolution over π-electron conjugated porous carbon nitride rods

引用

Nano Research 2022年第12期15卷 10148-10157页

作者： Jiawei Xia Neeta Karjule Gabriel mark Michael Volokh Haiqun Chen Menny Shalom Key Laboratory of Advanced Catalytic Materials and Technology Advanced Catalysis and Green Manufacturing Collaborative Innovation CenterChangzhou UniversityChangzhou213164China Department of Chemistry and Ilse Katz Institute for Nanoscale Science and Technology Ben-Gurion University of the NegevBeer-Sheva8410501Israel

Photocatalysis using polymeric carbon nitride(CN)materials is a constantly evolving field,where the variation of synthetic procedures allows the constant improvement of activity by tackling the intrinsic limitations of these materials(optical absorbance,specific surface area,charge migration,etc.).Amongst the possible photocatalytic reactions,the most popular application of CNs is the hydrogen evolution reaction(HER)from *** this work,we design precisely-controlled carbon-doped porous CN rods with extended π-electron conjugation from supramolecular assemblies of melem and co-monomers,which partially substitute nitrogen for carbon atoms at the pyrimidine ring of the *** hydrogen bonds and good thermal stability of the melem-based supramolecular framework allow synthesizing a more ordered structure for improved charge migration;the control from the molecular level over the position of carbon-substituted nitrogen positions tailors the band alignment and photogenerated charge *** optimal photocatalyst shows an excellent HER rate(up to 10.16 mmol·h-1·g-1 under 100 W white light-emitting diode(LED)irradiation,with an apparent quantum efficiency of 20.0%at 405 nm,which is 23.2 times higher compared to a reference bulk CN).To fully harness the benefits of the developed metal-free CNs,selective oxidation reaction of aromatic alcohols is demonstrated with high conversion and selectivity.

关键词： supramolecular assembly π-electron conjugation carbon nitride photocatalytic hydrogen evolution reaction selective aromatic alcohol oxidation

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

地学信息利用不确定性模拟和3D地球物理自动正演建模优化反演流程

引用

海洋地质 2013年第1期29卷 2-2页

作者： mark.lindsay laurent ailleres mark.jessell

目前的地球物理反演技术规定的地质约束条件是岩石物性特征和分布。、利用钻孔或其它资料的地层“穿刺点”用于对整个层面加权来约束几何反演。但现有反演技术没有结合所有的地质数据，传统的程序只将单一地质模型和岩石物性参数用于地... 详细信息

目前的地球物理反演技术规定的地质约束条件是岩石物性特征和分布。、利用钻孔或其它资料的地层“穿刺点”用于对整个层面加权来约束几何反演。但现有反演技术没有结合所有的地质数据，传统的程序只将单一地质模型和岩石物性参数用于地球物理反演。

关键词：地球物理反演优化反演定性模拟信息利用建模正演 3D 地学

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Virally-Mediated Versus Grazer-Induced Mortality Rates in a Warm-Temperate Inverse Estuary (Spencer Gulf, South Australia)

引用

Open Journal of Marine Science 2014年第4期4卷 257-278页

作者： laurent Seuront mark Doubell Paul Van Ruth CNRS UMR 8187 LOG Wimereux France School of Biological Sciences Flinders University Adelaide Australia Aquatic Sciences South Australian Research and Development Institute West Beach Australia

We investigated the seasonal dynamics of flow cytometrically-defined populations of viruses, heterotrophic bacteria, and the picoeukaryotic and prokaryotic phytoplankton at three sites in the temperate oligotrophic inverse estuary of Spencer Gulf (South Australia). We consistently identified two sub-populations of viruses, three sub-populations of heterotrophic bacteria, one population of picoeukaryotic phytoplankton and two populations of prokaryotic phytoplankton (cyanobacteria Prochlorococcus and Synechococcus). Both the cytometric community composition and the abundance of viruses, heterotrophic bacteria and both prokaryotic (Synechococcus and Prochlorococcus) and eukaryotic picophytoplankton were consistent with previous observations conducted in South Australian continental shelf waters. Noticeably LDNA bacteria (i.e. inactive or dormant cells) were consistently significantly the most abundant group of heterotrophic bacteria (totaling from 29% to 68% of total bacterial abundance) and were up to 10-fold more abundant than that previously reported in South Australian continental shelf waters, including the nearby Saint Vincent Gulf. These results suggest an overall low activity of the microbial community, and are consistent with previous evidence that LDNA cells may play a greater role in heterotrophic processes than HDNA cells in oligotrophic waters. In an attempt to further assess the qualitative and quantitative nature of the mortality of these organisms, we used a specific dilution assay to assess the relative contribution of viruses and microzooplankton grazers to the mortality rates of heterotrophic bacteria, and picoeukaryotic and prokaryotic phytoplankton. We consistently reported site-specific, population specific and sea-son-specific viral lysis and grazing rates of heterotrophic bacteria and the picoeukaryotic and prokaryotic (cyanobacteria Prochlorococcus and Synechococcus) phytoplankton across sites and seasons. Specifically, both viral lysis and mi

关键词： Lysis Grazing Bacteria Viruses Prokaryotic and Eukaryotic Picophytoplankton Dilution Assay

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Modeling Water Quality Impacts of Growing Corn, Switchgrass, and <i>Miscanthus</i>on Marginal Soils

引用

Journal of Water Resource and Protection 2014年第14期6卷 1352-1368页

作者： mark A. Thomas laurent M. Ahiablame Bernard A. Engel Indrajeet Chaubey Department of Agricultural and Biological Engineering Purdue University West Lafayette IN USA Department of Agricultural and Biosystems Engineering South Dakota State University Brookings SD USA Department of Earth Atmospheric and Planetary Sciences West Lafayette IN USA

The goal of the study was to model water quality impacts of growing perennial grasses on marginal soils. The GLEAMS-NAPRA and RUSLE models were used to simulate long-term surface runoff, percolation, erosion, total phosphorus (TP), and nitrate (NO3-N) losses associated with the production of corn-based bioenergy systems (i.e. conventional tillage corn and corn grain plus stover removal), switchgrass and Miscanthus on three marginal quality soils and one good quality soil in Indiana. Simulations showed that switchgrass and Miscanthus had no effect on annual runoff, but decreased percolation by at least 17%. Results also suggested a potential for reduction in erosion for Miscanthus across the soil types examined when compared to corn-based bioenergy production. The production of switchgrass and Miscanthus did not have significant effects on the simulated TP and NO3-N losses in runoff compared to corn production systems. Nitrates leached from fertilized Miscanthus production were approximately 90% lower than NO3-N leached from the production of fertilized switchgrass and corn systems. Additional studies are needed to better understand the hydrology, erosion and nutrient responses of Miscanthus and switchgrass production to meet bioenergy demands.

关键词： Water Quality Modeling Perennial Grass Runoff Biofuels Marginal Lands GLEAMS-NAPRA

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

结合不确定性分析和多样性指标提高地质可行性勘探空间

引用

海洋地质 2013年第1期29卷 3-3页

作者： laurent ailleres mark.lindsay St6phane PERROUTY

3D模型流程试图综合各种地学信息来描述一个地质目标，它可以创造、分析和量化不同的几何元素来确定其与地质特征的空间关系，模拟数据通常来源于野外观测、钻井记录、地球物理解释和构造演化假说。

关键词：地质目标空间关系不确定性分析多样性指标勘探地球物理解释地学信息 3D模型

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Genetic identification and reiterated captures suggest that the Astyanax mexicanus El Pachón cavefish population is closed and declining

引用

Zoological Research 2023年第4期44卷 701-711页

作者： laurent Legendre Julie Rode Isabelle Germon Marie Pavie Carla Quiviger Maxime Policarpo Julien Leclercq Stéphane Père Julien Fumey Carole Hyacinthe Patricia Ornelas-García Luis Espinasa Sylvie Rétaux Didier Casane UniversitéParis-Saclay CNRSIRDUMRÉvolutionGénomesComportement etÉcologieGif-sur-Yvette 91190France Objectif Sciences International NGO OSI-Panthera ProgramGeneva 99140Switzerland Institut de Neuroscience Paris-Saclay UniversitéParis-Saclay and CNRSSaclay 91400France Institut Pasteur UniversitéParis CitéCNRS UMR 2000Microbial Paleogenomics UnitParis 75015France Institut Pasteur UniversitéParis CitéBioinformatics and Biostatistics HubParis 75015France Department of Genetics Harvard Medical SchoolBlavatnik InstituteBoston MA 02115USA Colección Nacional de Peces Departamento de ZoologíaInstituto de BiologíaUniversidad Nacional Autónoma de MéxicoMéxico DF CP 04510México School of Science Marist CollegePoughkeepsieNew York 12601USA UniversitéParis Cité UFR Sciences du VivantParis 75013France Zoological Institute Department of Environmental SciencesUniversity of BaselBaselSwitzerland

The sizes of Astyanax mexicanus blind cavefish populations of North-East Mexico are demographic parameters of great importance for investigating a variety of ecological,evolutionary,and conservation ***,few estimates have been *** these mobile animals living in an environment difficult to explore as a whole,methods based on capture-mark-recapture are appropriate,but their feasibility and interpretation of results depend on several assumptions that must be carefully ***,we provide evidence that minimally invasive genetic identification from captures at different time intervals(three days and three years)can give insights into cavefish population size dynamics as well as other important demographic parameters of *** also provide tools to calibrate sampling and genotyping efforts necessary to reach a given level of *** results suggest that the El Pachón cave population is currently very small,of an order of magnitude of a few hundreds of individuals,and is distributed in a relatively isolated *** probable decline in population size in the El Pachón cave since the last census in 1971 raises serious conservation issues.

关键词： Cavefish Population size Conservation Swabbing Genetic identification

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Updated Inventory of Carbon Monoxide in the Taurus Molecular Cloud

引用

天文和天体物理学研究:英文版 2023年第9期23卷 56-65页

作者： Yan Duan Di Li laurent Pagani Paul F.Goldsmith Tao-Chung Ching Chen Wang Jinjin Xie National Astronomical Observatories Chinese Academy of SciencesBeijing 100101China University of Chinese Academy of Sciences Beijing 100049China Research Center for Intelligent Computing Platforms Zhejiang LaboratoryHangzhou 311100China NAOC-UKZN Computational Astrophysics Centre University of KwaZulu-NatalDurban4000South Africa LERMA&UMR 8112 du CNRS Observatoire de ParisPSL UniversitySorbonne UniversitésCNRSF-75014 ParisFrance Jet Propulsion Laboratory California Institute of Technology4800 Oak Grove DrivePasadenaCA91109USA Jansky Fellow National Radio Astronomy Observatory1003 Lopezville RoadSocorroNM 87801USA Shanghai Astronomical Observatory Chinese Academy of Sciences National Astronomical ObservatoriesChinese Academy of SciencesShanghai 200030China

The most extensive survey of carbon monoxide(CO)gas in the Taurus molecular cloud relied on ^(12)CO and ^(13)CO J=1→0 emission only,distinguishing the region where ^(12)CO is detected without ^(13)CO(named mask 1 region)from the one where both are detected(mask 2 region)(Goldsmith et al.2008;Pineda et al.2010).We have taken advantage of recent ^(12)CO J=3→2 James Clerk Maxwell Telescope observations,where they include mask 1regions to estimate density,temperature,and N(CO)with a large velocity gradient *** represents 1395 pixels out of~1.2 million in the mark 1 *** to Pineda et al.(2010)results and assuming a Tkin of 30 K,we find a higher volume density of molecular hydrogen of 3.3×10^(3) cm^(-3),compared to their 250-700 cm^(-3),and a CO column density of 5.7×10^(15)cm^(-2),about a quarter of their *** differences are important and show the necessity to observe several CO transitions to better describe the intermediate region between the dense cloud and the diffuse atomic *** observations to extend the ^(12)CO J=3→2 mapping further away from the ^(13)COdetected region comprising mask 1 are needed to revisit our understanding of the diffuse portions of dark clouds.

关键词： submillimeter ISM-ISM clouds-ISM molecules

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Universal two-qubit quantum processing via large-scale silicon quantum photonics

Universal two-qubit quantum processing via large-scale silic...

引用

第十八届全国量子光学学术会议

作者：强晓刚 Xiaoqi Zhou Jianwei Wang Callum M.Wilkes Thomas Loke Sean O'Gara laurent Kling Graham Marshall Raffaele Santagati Timothy C.Ralph Jingbo.B.Wang Jeremy.L.O'Brien mark.G.Thompson Jonathan.C.F.Matthews 国防科技大学 National Innovation Institute of Defense Technology AMS Quantum Engineering Technology Labs H.H.Wills Physics Laboratory and Department of Electrical and Electronic EngineeringUniversity of Bristol School of Physics The University of Western Australia Centre for Quantum Computation and Communication Technology Department of Mathematical and PhysicsThe University of Queensland

Quantum computing generates much interest for its potential ability to outperform classical computing at many tasks. Photons have been considered as a promising candidate for implementing quantum computation owing to their properties of long coherence time, ease of manipulation and light-speed transmission. The integrated quantum photonic platform is an engineering solution proposed for robust and exquisite control of photonic quantum information by allowing generation, manipulation and detection of photons on a single chip. Here we use integrated silicon photonics and the linear combination of quantum operators scheme to realise a fully programmable two-qubit quantum processor, which enables universal two-qubit quantum information processing in optics for the first time. The device is fabricated with readily available CMOS based processing and comprises more than 200 photonic components, including 4 nonlinear photon-sources, 4 filters, 82 beam splitters and 58 individually addressable phase shifters. It allows to generate entangled photons and to initialise, operate and analyze arbitrary two-qubit states and processes on chip. To demonstrate performance, we programmed the device to implement 98 different two-qubit unitary operations（with average quantum process fidelity of 93.2±4.5%）, a two-qubit quantum approximate optimization algorithm and efficient simulation of Szegedy directed quantum walks. All results presented require about 100,000 experiment configurations. The chip performs with high fidelity, it is inherently stable and repeatable under continuous operation and it can be reprogrammed at k Hz rate, showing an ideal platform for quantum information processing applications. This fosters further use of the linear combination architecture with silicon photonics for future photonic quantum processors.

关键词：

来源： cnki会议评论

在线全文

cnki会议

学校读者我要写书评

暂无评论

欢迎您,

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

请选择保存的检索档案：

请选择收藏分类：

通借通还

欢迎您,

建议与咨询 留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

请选择保存的检索档案： 新增检索档案 确定 取消

请选择收藏分类： 新增自定义分类 确定 取消

通借通还

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

请选择保存的检索档案：

请选择收藏分类：