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Effect of Niobium on Transformations From Austenite to Ferrite in Low Carbon Steels

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Journal of Iron and Steel Research International 2011年第S1期18卷 208-212页

作者： Parker Sally Rose Andrew west geoff Thomson Rachel Steel Metallurgy Department Tata Steel RD and TSwinden Technology CentreRotherhamS60 3ARUK Department of Materials Loughborough UniversityLoughboroughLE11 3TUUK

Niobium has an important effect on the transformation behaviour,grain size refinement and precipitation strengthening during hot rolling and subsequent cooling in low carbon steels,with even a low content of niobium having a strong effect on the transformation rate from austenite to ***,the effects of niobium on transformation behaviour have not been fully characterised and understood to *** paper examines in detail austenite grain growth as a function of austenitisation time in high strength low alloy (HSLA) steels with three different niobium contents,together with the effect of niobium on the isothermal transformation kinetics from austenite to ferrite as a function of *** is shown that austenite has the slowest grain growth rate in the steel with the highest niobium *** austenite grain sizes are consistent,the steel with the highest niobium content was found to have the slowest transformation rate from austenite to ferrite.

关键词： niobium transformation kinetics austenite grain growth low carbon steels

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监控系统中的多摄像机协同(英文)

自动化学报 2003年第3期29卷 408-422页

作者： Nam T. Nguyen Svetha Venkatesh geoff west Hung H. Bui Department of Computing Curtin University of TechnologyDepartment of Computing Curtin University of TechnologyDepartment of Computing Curtin University of TechnologyDepartment of Computing Curtin University of Technology Perth AustraliaPerth AustraliaPerth AustraliaPerth Australia

描述了一个用于室内场合对多个目标进行跟踪的分布式监控系统 .该系统由多个廉价的固定镜头的摄像机构成 ,具有多个摄像机处理模块和一个中央模块用于协调摄像机间的跟踪任务 .由于每个运动目标有可能被多个摄像机同时跟踪 ,因此如何选... 详细信息

描述了一个用于室内场合对多个目标进行跟踪的分布式监控系统 .该系统由多个廉价的固定镜头的摄像机构成 ,具有多个摄像机处理模块和一个中央模块用于协调摄像机间的跟踪任务 .由于每个运动目标有可能被多个摄像机同时跟踪 ,因此如何选择最合适的摄像机对某一目标跟踪 ,特别是在系统资源紧张时 ,成为一个问题 .提出的新算法能根据目标与摄像机之间的距离并考虑到遮挡的情况 ,把目标分配给相应的摄像机 ,因此在遮挡出现时 ,系统能把遮挡的目标分配给能看见目标并距离最近的那个摄像机 .实验表明该系统能协调好多个摄像机进行目标跟踪。

关键词：分布式监控系统目标跟踪摄像机处理模块摄像机协同

Spatial and temporal patterns of sarcoptic mange in wombats using the citizen science tool,WomSAT

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Integrative Zoology 2024年第3期19卷 387-399页

作者： Sujatha MAYADUNNAGE Hayley Jade STANNARD Peter west Julie M.OLD School of Science Western Sydney UniversityHawkesburyNSWAustralia School of Agricultural Environmental and Veterinary SciencesCharles Sturt UniversityWagga WaggaNSWAustralia Department of Primary Industries Orange Agricultural InstituteOrangeNSWAustralia

There is currently limited information regarding the levels of infection and distribution of sarcoptic mange in the wombat population throughout *** analyzed cases of sarcoptic mange in bare-nosed wombats reported into WomSAT,a website and mobile phone application where citizen scientists can upload sightings of wombats,burrows,and sarcoptic mange *** used Maxent software to predict locations and the environmental factors associated with sarcoptic mange occurrence in bare-nosed wombats.A total of 1379 sarcoptic mange-infected and 3043 non-sarcoptic mange-infected wombats were reported by 674 and 841 citizen scientists,*** all the wombats reported to WomSAT from 2015 to 2019,31.2%were infected with sarcoptic *** mange in bare-nosed wombats was reported in 502 suburbs across four *** South Wales had the highest number of sarcoptic mange cases reported to *** was no statistically significant seasonal variation of sarcoptic mange levels in bare-nosed *** model showed that Euclidean distance to urban areas was the highest contributing factor for sarcoptic mange *** distance to urban areas decreased,the suitability for sarcoptic mange *** precipitation was the next contributing factor in the model,with higher rainfall of 400–700 mm correlating to an increase in sarcoptic mange *** the data collected to date have provided the largest-scale contemporary distribution of sarcoptic mange in wombats,data should continue to be collected by citizen scientists as it is an easy and low-cost method of collecting data over large *** suggest targeting the identified hotspot areas and more site-specific studies for studying and mitigating sarcoptic mange in bare-nosed wombats.

关键词： bare-nosed wombats habitat suitability Maxent modeling

The storage and utilization of carbohydrates in response to elevation mediated by tree organs in subtropical evergreen broad-leaved forests

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Forest Ecosystems 2024年第1期11卷 52-61页

作者： Bin Xu Xueli Jiang Yingying Zong G.geoff Wang Fusheng Chen Zhenyu Zhao Xiangmin Fang Key Laboratory of National Forestry and Grassland Administration on Forest Ecosystem Protection and Restoration of Poyang Lake Watershed College of ForestryJiangxi Agricultural UniversityNanchang330045China Jiulianshan National Observation and Research Station of Chinese Forest Ecosystem College of ForestryJiangxi Agricultural UniversityNanchang330045China Department of Forestry and Environmental Conservation Clemson UniversityClemsonSC29634USA

Global climate change can affect tree growth and carbon sink function by influencing plant carbohydrate synthesis and utilization,while elevation can be used as an ideal setting under natural conditions to simulate climate change *** effect of elevation on tree growth may depend on organ ***,the allocation patterns of nonstructural and structural carbohydrates(NSCs and SCs,respectively)in different tree organs and their response to elevation remain *** selected four dominant tree species,Schima superba,Castanopsis eyrei,Castanopsis fargesii and Michelia maudiae,along an elevation gradient from 609 to 1,207 m in subtropical evergreen broad-leaved forests and analyzed leaf,trunk,and fine root NSCs,carbon(C),nitrogen(N)and phosphorus(P)concentrations and the relative abundance of *** NSCs increased initially and then decreased,and trunk NSCs increased with increasing ***,root NSCs decreased with increasing *** relative abundance of SCs in leaves and trunks decreased,while the relative abundance of root SCs increased with increasing *** significant correlations between SCs and NSCs in leaves were detected,while there were negative correlations between SCs and NSCs in trunks,roots,and all *** partitioning analysis indicated that plant C/N and C/P were the main predictors of changes in SCs and *** results suggest that tree organs have divergent responses to elevation and that increasing elevation will inhibit the aboveground part growth and enhance the root growth of trees.A tradeoff between the C distribution used for growth and storage was confirmed along the elevation gradient,which is mainly manifested in the"sink"organs of *** results provide insight into tree growth in the context of global climate change scenarios in subtropical forest ecosystems.

关键词： Nonstructural carbohydrates Structural carbohydrates Elevation Subtropical evergreen broad-leaved forests Tree organs

A 3D In-vitro model of the human dentine interface shows long-range osteoinduction from the dentine surface

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International Journal of Oral Science 2024年第2期16卷 225-237页

作者： William Macalester Asme Boussahel Rafael O.Moreno-Tortolero Mark R.Shannon Nicola west Darryl Hill Adam Perriman School of Cellular and Molecular Medicine Biomedical Sciences BuildingUniversity of BristolUniversity WalkBristolUnited Kingdom Bristol Centre for Functional Nanomaterials HH Wills Physics LaboratoryUniversity of BristolTyndall AvenueBristolUnited Kingdom Centre for Protolife Research School of ChemistryUniversity of BristolCantocks CloseBristolUnited Kingdom Max Planck-Bristol Centre for Minimal Biology School of ChemistryUniversity of BristolBristolUnited Kingdom Periodontology Bristol Dental SchoolUniversity of BristolLower Maudlin StreetBristolUnited Kingdom

Emerging regenerative cell therapies for alveolar bone loss have begun to explore the use of cell laden hydrogels for minimally invasive surgery to treat small and spatially complex maxilla-oral ***,the oral cavity presents a unique and challenging environment for in vivo bone tissue engineering,exhibiting both hard and soft periodontal tissue as well as acting as key biocenosis for many distinct microbial communities that interact with both the external environment and internal body systems,which will impact on cell fate and subsequent treatment ***,we design and bioprint a facile 3D in vitro model of a human dentine interface to probe the effect of the dentine surface on human mesenchymal stem cells(hMSCs)encapsulated in a microporous hydrogel *** demonstrate that the dentine substrate induces osteogenic differentiation of encapsulated hMSCs,and that both dentine andβ-tricalcium phosphate substrates stimulate extracellular matrix production and maturation at the gel-media interface,which is distal to the gel-substrate *** findings demonstrate the potential for long-range effects on stem cells by mineralized surfaces during bone tissue engineering and provide a framework for the rapid development of 3D dentine-bone interface models.

关键词： interface den surface

Integrating Voluntary Musical Imagery in Music Practice:The Interpretation,Mechanisms and Implementations

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Integrating Voluntary Musical Imagery in Music Practice:The ...

Symptom presentation and evolution in the first 48 hours after injury are associated with return to play after concussion in elite Rugby Union

2024·中国音乐家协会音乐心理学学会第八届学术研讨会

作者：孟辰 geoff Luck 山东科技大学芬兰于韦斯屈莱大学

Practice is acknowledged as a crucial facilitator for musicians to achieve performance excellence. Despite the rich literature on incorporating voluntary musical imagery(VMI) to improve one's practice regimen, fragments remain in the understanding of VMI in the context of musical practice. Therefore, our review 1) enriched the meaning of VMI in the context of music practice, 2) summarized findings on how deliberate use of musical imagery parallels physical practice through the lens of neural functional equivalence, and 3) synthesized work on the application of VMI in enhancing musical learning from both theoretical and practical perspectives. By offering an integrated overview of VMI, we highlighted the crucial role of VMI in music learning, teaching, and performance. We also discovered the gap and encouraged research to further explore the impact of embodied experiences on VMI formation, investigate the optimal imagery content and ratio combination to establish a personalized intervention protocol and employ physiological measures to assess VMI effectiveness.

关键词： Voluntary music imagery Neuroscience Music practice Mental practice

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Journal of Sport and Health Science 2024年第3期13卷 387-397页

作者： Ross Tucker Matt Cross Keith Stokes Lindsay Starling Rosy Hyman Simon Kemp Stephen west Martin Raftery Eanna Falvey James Brown Institute of Sport and Exercise Medicine(ISEM) Department of ExerciseUniversity of StellenboschTygerberg 7505South Africa World Rugby Ltd. Dublin D02 AE93Ireland Premiership Rugby London SW1V 1PXUK Centre for Health and Injury and Illness Prevention in SportUniversity of BathClaverton Down BA27AYUK UK Collaborating Centre on Injury and Illness Prevention in Sport(UKCCIIS) University of BathClaverton Down BA27AYUK Rugby Football Union London TW27BAUK London School of Tropical Medicine London WC1E 7HTUK Sport Injury Prevention Research Centre Faculty of KinesiologyUniversity of CalgaryCalgary T2N 1N4Canada Department of Medicine School of Medicine and HealthUniversity College CorkCork T12 EC8PIreland Carnegie Applied Rugby Research(CARR)centre Carnegie School of SportLeeds Beckett UniversityLeeds LS63QSUK

Background:Return to play(RTP)in elite rugby is managed using a 6-stage graduated RTP protocol,which can result in clearance to play within 1 week of *** aimed to explore how symptom,cognitive,and balance presentation and evolution during concussion screens 2 h(head injury assessment(HIA2)and 48 h(HIA3)after injury were associated with time to RTP)to identify whether a more conservative graduated RTP may be ***:A retrospective cohort study was conducted in 380 concussed rugby players from elite men’s rugby over 3 consecutive *** were classified as shorter or longer returns,depending on whether RTP occurred within 7 days(allowing them to be considered to play the match 1 week after injury)or longer than 8 days,***,cognitive,and balance performance during screens was assessed relative to baseline(normal or abnormal)and to the preceding screen(improving or worsening).Associations between sub-test abnormalities and RTP time were explored using odds ratios(OR,longer ***).Median day absence was compared between players with abnormal or worsening results and those whose results were normal or ***:Abnormal symptom results during screens 2 h and 48 h after concussion were associated with longer return time(HIA2:OR=2.21,95%confidence interval(95%CI):1.39-3.50;HIA3:OR=3.30,95%CI:1.89-5.75).Worsening symptom number or severity from the time of injury to 2 h and 48 h post-injury was associated with longer return(HIA2:OR=2.49,95%CI:1.36-4.58;HIA3:OR=3.34,95%CI:1.10-10.15).Median days absence was greater in players with abnormal symptom results at both HIA2 and *** and balance performance were not associated with longer return and did not affect median days ***:Symptom presentation and evolution within 48 h of concussion were associated with longer RTP *** may guide a more conservative approach to RTP,while still adhering to individualized concussion management principles.

关键词： Brain injury Concussion management General return to play Medical management

The risk of prostate cancer on incidental finding of an avid prostate uptake on 2-deoxy-2-[^(18)F]fluoro-D-glucose positron emission tomography/computed tomography for non-prostate cancer-related pathology:A single centre retrospective study

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Asian Journal of Urology 2024年第1期11卷 33-41页

作者： Anthony Franklin Troy Gianduzzo Boon Kua David Wong Louise McEwan James Walters Rachel Esler Matthew J.Roberts geoff Coughlina John W.Yaxley Department of Urology The Wesley HospitalBrisbaneQLDAustralia Wesley Medical Research BrisbaneQLDAustralia School of Medicine The University of QueenslandBrisbaneQLDAustralia Department of Radiology Wesley Medical ImagingBrisbaneQLDAustralia Department of Urology Royal Brisbane and Women's HospitalBrisbaneQLDAustralia

Objective:To review the risk of prostate cancer(PCa)in men with incidentally reported increased intraprostatic uptake at 2-deoxy-2-[18F]fluoro-d-glucose positron emission tomography/computed tomography(18F-FDG PET/CT)ordered at Department of Urology,The Wesley Hospital,Brisbane,QLD,Australia for non-PCa related ***:Retrospective analysis of consecutive men between August 2014 and August 2019 presenting to a single institution for 18F-FDG PET/CT for non-prostate related conditions was *** were classified as benign,indeterminate,or malignant depending of the results of prostate-specific antigen(PSA),PSA velocity,biopsy histopathology,and three-Tesla(3 T)multiparametric MRI(mpMRI)Prostate Imaging Reporting and Data System score,or gallium-68-prostate-specific membrane antigen(68Ga-PSMA)PET/CT ***:Three percent(273/9122)of men demonstrated 18F-FDG avidity within the ***-five percent(231/273)were further investigated,including with PSA tests(227/231,98.3%),3 T mpMRI(68/231,29.4%),68Ga-PSMA PET/CT(33/231,14.3%),and prostate biopsy(57/231,24.7%).Results were considered benign in 130/231(56.3%),indeterminate in 31/231(13.4%),and malignant in 70/231(30.3%).PCa was identified in 51/57(89.5%)of the men who proceeded to biopsy,including 26/27(96.3%)men with Prostate Imaging Reporting and Data System scores 4-5 mpMRI and six men with a positive 68Ga-PSMA PET/*** most common Gleason score on biopsy was greater than or equal to 4+5(14/51,27.5%).68Ga-PSMA PET/CT was concordant with the 18F-FDG findings in 26/33(78.8%).All 13 men with a positive concordant 18F-FDG,3 T mpMRI,and 68Ga-PSMA PET/CT had PCa on *** was no statistically significant difference in the 18F-FDG maximum standardized uptake value between the benign or malignant groups(5.7 vs.6.1;p=0.580).Conclusion:In this study,after an incidental finding of an avid intraprostatic lesion on 18F-FDG PET/CT,70 of the 231 cases(30.3%;0.8%of the entire cohort)had results c

关键词： Prostatecancer Positionemission tomography Multiparametric magneticresonance imaging Prostatebiopsy

2023年IPv4地址分配和转让——2023年全球IP地址回顾(一)

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中国教育网络 2024年第1期 37-42页

作者： geoff Huston 王文鑫(翻译) APNIC

近日,APNIC首席科学家杰夫·休斯顿(geoffHuston)发文回顾了2023年全球IP地址发展情况。他分析了2023年IPv4和IPv6的部署现状,并对未来互联网的发展形势作出判断。本期将刊登第一部分,分析了2023年IPv4地址分配和转让状况。

关键词： IP地址 IPv4地址未来互联网 APN 转让