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The acceleration of a high-charge electron bunch to 10 GeV in a 10-cm nanoparticle-assisted wakefield accelerator

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Matter and Radiation at Extremes 2024年第1期9卷 15-24页

作者： Constantin Aniculaesei Thanh Ha Samuel Yoffe Lance Labun Stephen Milton Edward McCary Michael M.Spinks Hernan J.Quevedo Ou Z.Labun Ritwik Sain Andrea Hannasch Rafal Zgadzaj Isabella Pagano Jose A.Franco-Altamirano Martin L.Ringuette Erhart Gaul scott V.Luedtke Ganesh Tiwari Bernhard Ersfeld Enrico Brunetti Hartmut Ruhl Todd ditmire Sandra Bruce Michael E.donovan Michael C.downer dino A.Jaroszynski Bjorn Manuel Hegelich University of Texas at Austin AustinTexas 78712USA SUPA department of Physics University of StrathclydeGlasgowScotland G4 ONGUnited Kingdom Tau Systems Inc.AustinTexas 78701USA Lawrence Livermore National Laboratory LivermoreCalifornia 94550USA Los Alamos National Laboratory Los AlamosNew Mexico 87545USA Brookhaven National Laboratory UptonNew York 11973USA Ludwig-Maximilians-Universität MunichGermany

An intense laser pulse focused onto a plasma can excite nonlinear plasma *** appropriate conditions,electrons from the background plasma are trapped in the plasma wave and accelerated to ultra-relativistic *** scheme is called a laser wakefield *** this work,we present results from a laser wakefield acceleration experiment using a petawatt-class laser to excite the wakefields as well as nanoparticles to assist the injection of electrons into the accelerating phase of the *** find that a 10-cm-long,nanoparticle-assisted laser wakefield accelerator can generate 340 pC,10±1.86 GeV electron bunches with a 3.4 GeV rms convolved energy spread and a 0.9 mrad rms *** can also produce bunches with lower energies in the 4–6 GeV range.

关键词： acceleration nanoparticle charge

Global Wheat Head detection Challenges:Winning Models and Application for Head Counting

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Plant Phenomics 2023年第3期5卷 460-473页

作者： Etienne david Franklin Ogidi daniel Smith scott Chapman Benoit de Solan Wei Guo Frederic Baret Ian Stavness UMR 1114 EMMAH INRAEAvignonFrance Arvalis–Institut du Végétal ParisFrance department of Computer Science University of SaskatchewanSaskatoonCanada School of Food and Agricultural Sciences University of QueenslandBrisbaneAustralia Graduate School of Agricultural and Life Sciences The University of TokyoTokyoJapan

data competitions have become a popular approach to crowdsource new data analysis methods for general and specialized data science *** competitions have a rich history in plant phenotyping,and new outdoor field datasets have the potential to embrace solutions across research and commercial *** developed the Global Wheat Challenge as a generalization competition in 2020 and 2021 to find more robust solutions for wheat head detection using field images from different *** analyze the winning challenge solutions in terms of their robustness when applied to new *** found that the design of the competition had an influence on the selection of winning solutions and provide recommendations for future competitions to encourage the selection of more robust solutions.

关键词： Wheat specialized competition

Surface texture evaluation of additively manufactured metallic cellular scaffolds for acetabular implants using *** computed tomography

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Bio-design and Manufacturing 2019年第2期2卷 55-64页

作者： Shan Lou Luca Pagani Wenhan Zeng Muhammad U.Ghori Xiangqian Jiang Paul J.scott EPSRC Future Metrology Hub University of HuddersfieldQueensgateHuddersfield HD1 3DHUK department of Pharmacy University of HuddersfieldQueensgateHuddersfield HD1 3DHUK

The surface topography of acetabular implants plays a key role in providing cell attachment and *** measurement and characterisation of the surface texture of the cellular scaffold layer on the acetabular cup are very difficult due to the 3d nature of scaffold *** is proposed to use X-ray computed tomography(XCT)to measure the surface texture of an electron beam melting-produced titanium acetabular *** surface texture of its cellular scaffold is evaluated using the newly developed 3d surface texture parameters,which allows surface characterisation on 3d triangular mesh *** commonly used height parameters,*** arithmetical mean height Sa,the root mean square height Sq,the skewness Ssk and the kurtosis Sku,are calculated from surface patches extracted from the XCT scanned triangular mesh *** addition,the surface peak density and pit density,which are more related to cell communication and proliferation,are estimated based on the 3d watershed *** Wolf pruning with an empirical threshold 12μm is used to control the over-segmentation.

关键词： Additive manufacturing Cellular scaffold Surface texture X-ray computed tomography

Shock standards Cu, Ag, Ir, and Pt in a wide pressure range

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Matter and Radiation at Extremes 2023年第4期8卷 37-46页

作者： Leonid Burakovsky dean L.Preston scott d.Ramsey Charles E.Starrett Roy S.Baty Los Alamos National Laboratory Los AlamosNew Mexico 87545USA

Although they are polymorphic(multiphase)materials,both copper and silver are reliable Hugoniot standards,and thus it is necessary to establish an accurate analytic model of their principal *** we present analytic forms of their principal Hugoniots,as well as those of iridium and platinum,two“pusher”standards for shock-ramp experiments,over a wide range of *** are based on our new analytic model of the principal Hugoniot[Burakovsky et al.,***.132,215109(2022)].Comparison of the four Hugoniots with experimental and independent theoretical data(such data exist to very high pressures for both copper and silver)demonstrates excellent ***,the new model for copper and silver can be considered as providing the corresponding Hugoniot standards over a wide pressure *** also suggest an approach for calculating the Grüneisen parameter along the Hugoniot and apply it to copper as a prototype,and our results appear to be in good agreement with the available data.

关键词： silver copper analytic

PERIOPERATIVE STROKE AFTER CAROTId ENdARTERECTOMY ETIOLOGICAL RISK FACTORS ANd MANAGEMENT

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Chinese Medical Journal 1994年第6期 62-65页

作者：叶建荣 K.A.Myers d.F.scott T.J.devine C.Flanc

291 patients were subjected to carotid endarterectomy from January 1985 to June 1992 in two Australian medical institutions. Of the 291 patients, perioperative stroke occurred in 22 (6.3%) after 347 operations (moderate 17 and severe 5). The 22 patients were studied with doppler scan, angiography, reexploration and CT. Reexploration showed that 12 of 14 patients had thrombosis in the internal carotid artery at operation. The etiological factors for perioperative strokes included thrombosis at the operative sites in 14 patients (64%), cerebral embolism after operation in 4, clamping ischemia in 2, intracerebral hemorrhage in 1 and unknown cause in 1. Six patients (27%) recovered completely in 4 weeks, 10 (45%) had mild residual neurological deficits, 5 (23%) had moderate neurological deficits and 1 died 3 days after operation. Only 6 patients had permanent neurological deficits (6 / 347, 17%).

关键词： In PERIOPERATIVE STROKE AFTER CAROTId ENdARTERECTOMY ETIOLOGICAL RISK FACTORS ANd MANAGEMENT

Identifying the impediments and enablers of ecohealth for a case study on health and environmental sanitation in Hà Nam, Vietnam

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Infectious diseases of Poverty 2014年第1期3卷 325-337页

作者： Vi Nguyen Hung Nguyen-Viet Phuc Pham-duc Craig Stephen scott A McEwen department of Population Medicine Ontario Veterinary CollegeUniversity of Guelph2509 Stewart Building(#45)Guelph N1G 2W1ONCanada Public Health Risk Sciences division Laboratory for Foodborne ZoonosesPublic Health Agency of Canada160 Research LaneUnit 206GuelphON N1G 5B2Canada Center for Public Health and Ecosystem Research Hanoi School of Public Health(HSPH)138 Giang Vo StreetHanoiVietnam Swiss Tropical and Public Health Institute(Swiss TPH) and International Livestock Research Institute(ILRI)Socinstrasse 57CH-4002 BaselSwitzerland and HanoiVietnam Swiss Federal Institute of Aquatic Science and Technology(ESWAG) Sandec–Department of Water and Sanitation in Developing CountriesP.O.BoxCH-8600DübendorfSwitzerland department of Ecosystem and Public Health Faculty of Veterinary MedicineUniversity of CalgaryTRW 2D263280 Hospital DriveNWCalgaryAlberta T2N 4Z6Canada Centre for Coastal Health 900 Fifth StreetNanaimoBritish Columbia V9R 5S5Canada

Background:To date,research has shown an increasing use of the term“ecohealth”in literature,but few researchers have explicitly described how it has been *** investigated a project on health and environmental sanitation(the conceptual framework of which included the pillars of ecohealth)to identify the impediments and enablers of ecohealth and investigate how it can move from concept to ***:A case study approach was *** interview questions were centred on the nature of interactions and the sharing of information between ***:The analysis identified nine impediments and 15 enablers of *** themes relating to impediments,in particular-integration is not clear,don’t understand,and limited participation-related more directly to the challenges in applying the ecohealth pillars of transdisciplinarity and *** themes relating to enablers-awareness and understanding,capacity development,and interactions-facilitated usage of the research *** extracting information on the environmental,social,economic,and health aspects of environmental sanitation,we found that the issue spanned multiple scales and ***:The challenge of how to integrate these aspects should be considered at the design stage and throughout the research *** recommend that ecohealth research teams include a self-investigation of their processes in order to facilitate a comparison of moving from concept to practice,which may offer insights into how to evaluate the process.

关键词： Ecohealth Evaluation Health Sanitation Case study Vietnam

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隐形微球表面吸附血浆蛋白的蛋白质组学分析

中国科学：生命科学 2012年第3期42卷 185-195页

作者： Yevgeniya Le 李丽王敦成 Mark d.scott Canadian Blood Services VancouverBCV6T 1Z3Canada Centre for Blood Research University of British ColumbiaVancouverBCV6T 1Z3Canada department of Pathology and Laboratory Medicine University of British ColumbiaVancouverBCV6T 1Z3 Canada

细胞和生物材料表面的甲氧基聚乙二醇(mPEG)修饰是一项具有广阔应用前景的非药理性免疫调节技术,但由于细胞的不稳定性,目前对其表面与血浆间相互作用的认识还不够深入.本实验采用相对稳定的乳胶微球作为模型,来研究其表面对血浆蛋白的... 详细信息

细胞和生物材料表面的甲氧基聚乙二醇(mPEG)修饰是一项具有广阔应用前景的非药理性免疫调节技术,但由于细胞的不稳定性,目前对其表面与血浆间相互作用的认识还不够深入.本实验采用相对稳定的乳胶微球作为模型,来研究其表面对血浆蛋白的吸附.结果显示,血浆总蛋白的吸附水平随着mPEG修饰浓度和分子量的增加而降低,未修饰的乳胶微球表面蛋白吸附量为(159.9±6.4)ng/cm2,mPEG修饰后,蛋白吸附量分别下降至(18.4±0.8)ng/cm2(1mmol/L2kdSCmPEG)和(52.3±5.3)ng/cm2(1mmol/L20kdSCmPEG).聚炳烯酰胺凝胶电泳(SdS-PAGE)和同位素标记相对和绝对定量的质谱技术(iTRAQ-MS)分析表明,在PEG修饰微球表面的蛋白质吸附层中,参与免疫系统活化的蛋白质丰度明显下降.因此,免疫修饰细胞和材料的生物学效应是通过降低抗原性及减弱表面与大分子间相互作用来实现的.

关键词：聚乙二醇修饰免疫修饰同位素标记相对和绝对定量技术质谱分析聚苯乙烯乳胶微球蛋白质组学

Microsoft Office 2000开发指南

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Infection Prevalence of <i>Borrelia burgdorferi</i>in Ticks Collected from Songbirds in Far-Western Canada

丛书名：万水计算机技术实用大全系列

2000年

作者：（美）d.F.scott 余江林等译

本书介绍了VBA的功能、Basic语言本身的优点、VB中的代表性术语，分析了Office 2000可以进行哪些重构、Office 2000中的种种对象等内容。

ISBN: (纸本)7980044851

本书介绍了VBA的功能、Basic语言本身的优点、VB中的代表性术语，分析了Office 2000可以进行哪些重构、Office 2000中的种种对象等内容。

关键词：基本知识软件包

来源：畅想之星图书光盘版（南... 评论

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Open Journal of Animal Sciences 2015年第3期5卷 232-241页

作者： John d. scott Lance A. durden John F. Anderson Research division Lyme Ontario Fergus Ontario Canada department of Biology Georgia Southern University Statesboro GA USA department of Entomology and Center for Vector Ecology and Zoonotic diseases The Connecticut Agricultural Experiment Station New Haven CT USA

Worldwide, wild birds play a vital role in the dispersal of ticks that harbour tick-borne pathogens, including Borrelia burgdorferi, the Lyme disease bacterium. Using PCR testing, we found 124 (31%) of 405 ticks (4 species), which were collected from 21 species of birds in far-western Canada, to be infected with B. burgdorferi. Transstadial transmission of B. burgdorferi occurred from larva to nymph, plus nymph to adult, in the avian coastal tick, Ixodes auritulus, collected from songbirds in British Columbia (B.C). Collectively, all 3 motile life stages (larva, nymph, adult) of this tick had an infection prevalence of 31% for B. burgdorferi, which suggests vector competency. A Pacific Wren was highly infested with I. auritulus immatures, and 20 (44%) of 45 ticks (2 nymphs, 43 larvae) were infected with B. burgdorferi. This heavy infestation shows the high potential to initiate a new population of ticks and to disseminate Lyme spirochetes. Epidemiologically, B. burgdorferi-infected I. auritulus larvae collected from the Spotted Towhee, Swainson’s Thrush, Pacific Wren, and Fox Sparrow suggest that these avian hosts act as reservoirs for B. burgdorferi. In this study, the western blacklegged tick, Ixodes pacificus, and Ixodes spinipalpis played a limited role in the enzootic transmission cycle of B. burgdorferi along coastal B.C. We document the first record of I. spinipalpis on a bird in Alberta. Because songbirds widely disperse Lyme disease vector ticks, primary health providers and the general public must be vigilant that outdoors people may be bitten by B. burgdorferi-infected ticks throughout far-western Canada.

关键词： Ticks Ixodes auritulus Ixodes pacificus Ixodes spinipalpis Lyme disease Borrelia burgdorferi Songbird Bird Parasitism Infection Prevalence