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以最低成本生产符合国际标准的混凝土配筋用棒线材和棒材盘卷

2007中国钢铁年会

作者： FrancescO Tbschi glyn ellis Senior Engineer Process and Metallurgy Danieli ＆ C-Buttrio Sales Manager Danieli Corporation

＜正＞During recent years,the cost of production for concrete reinforcement steel bars has increased due to many factors. These include energy costs and labour costs,but a significant factor is the cost of alloys and micro alloys such as Vanadium, which have traditionally been required to meet the mechanical *** increasing number of customers world-wide, who are currently using the micro alloying method for increasing the mechanical properties of the concrete reinforcement,are demanding alternative methods which to reduce or eliminate the cost for micro *** paper will analyse the requirements of the latest US and international standards,and discuss in detail the process advantages and limitations of techniques that can be used to reduce the production cost.

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钢铁 2008年第10期43卷 95-98页

作者： Francesco Toschi glyn ellis 杨秋霜意大利达涅利公司不详

最近几年,混凝土配筋用棒材的生产成本有所提高。造成成本增加的因素很多,其中包括能源成本和人工成本,但最主要的因素则是合金和微合金,比如钒的成本占有较大比重。在钢中加入合金元素钒,通常用于满足钢材力学性能要求。世界上越来越... 详细信息

最近几年,混凝土配筋用棒材的生产成本有所提高。造成成本增加的因素很多,其中包括能源成本和人工成本,但最主要的因素则是合金和微合金,比如钒的成本占有较大比重。在钢中加入合金元素钒,通常用于满足钢材力学性能要求。世界上越来越多的目前仍采用微合金化方法提高混凝土配筋力学性能的钢材生产商,正在寻求一种可以减少、甚至不用微合金元素的替代方法,以降低生产成本。分析了美国和国际最新标准提出的要求,并详细讨论了用于降低生产成本的新工艺、新技术的优点和限制条件。

关键词：棒线材国际标准成本淬火工艺

The Use of Biologic Treatments for Osteoarthritis: A Review

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Open Journal of Regenerative Medicine 2024年第2期13卷 21-40页

作者： William Thornton Sion glyn-Jones Nuffield Department of Orthopaedics Rheumatology and Musculoskeletal Sciences University of Oxford Oxford UK

Background: The number of people presenting with osteoarthritis is increasing due, largely, to an ageing population and advances in medical treatments. This is driving the demand for new clinical solutions and treatments for the disease. Biologic therapies have been touted as an adjunct, or even alternative to established treatments for osteoarthritis. The term “biologics” refers to protein-based therapeutics that are derived from the proteins of living organisms. These treatments include, but are not limited to: autologous blood products such as platelet rich plasma (PRP), cell therapies such as autologous chondrocyte implantation (ACI) and mesenchymal stem cells, growth factors and cytokines, gene therapy. Aim: This study aims to provide a clear definition of these technologies and describe the evidence supporting their clinical efficacy to treat osteoarthritis. This is to provide clarity to both clinicians and patients on the range of technologies available. Method: Literature databases Embase and PubMed were searched for keywords such as “biologic”, “osteoarthritis”. Results: The literature identified 4 primary categories of biologic treatments for osteoarthritis: stem cell therapy, somatic cell therapy, protein therapy and gene therapy. The evidence level varied in its quality from treatment to treatment, as did the conclusions of published studies. Conclusion: Autologous chondrocyte therapy had the most convincing evidence to support its use as a treatment for osteoarthritis, however, current methods of use produced variable results. Other treatments such as platelet rich plasma and bone marrow derived stem cells show promise as potential future therapies, with more refinement, but evidence does not support their use currently. Other treatments including autologous stem cells should be avoided until there is a greater quantity and quality of evidence supporting their use.

关键词： Osteoarthritis Biologics Gene Therapy Stem Cell Protein Therapy

Systematic Radio Telescope Alignment Using Portable Fringe Projection Profilometry

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Nanomanufacturing and Metrology 2024年第1期7卷 75-85页

作者： Joel Berkson Justin Hyatt Nathan Julicher Byeongjoon Jeong Isaac Pimienta Rachel Ball Wyatt ellis Jason Voris Diego Torres‑Barajas Daewook Kim James C.Wyant College of Optical Sciences University of Arizona1630 E.University Blvd.TucsonAZ 85721USA Department of Astronomy at Steward Observatory University of Arizona933 N Cherry Ave.TucsonAZ 85721USA

In 2019,the Event Horizon Telescope(EHT)released the first-ever image of a black hole event *** are now aiming for higher angular resolutions of distant targets,like black holes,to understand more about the fundamental laws of gravity that govern our *** achieve this higher resolution and increased sensitivity,larger radio telescopes are needed to operate at higher frequencies and in larger *** like the next-generation Very Large Array(ngVLA)and the Square-Kilometer Array(SKA)require building hundreds of telescopes with diameters greater than 10 ms over the next *** has a twofold *** telescope surfaces need to be more accurate to operate at higher frequencies,and the logistics involved in maintaining a radio telescope need to be simplified to support them properly in large *** of these problems can be solved with improved methods for surface metrology that are faster and more accurate with a higher *** leads to faster and more accurate panel alignment and,therefore,a more productive *** this paper,we present the use of binocular fringe projection profilometry as a solution to this problem and demonstrate it by aligning two panels on a 3-m radio telescope *** measurement takes only 10 min and directly delivers feedback on the tip,tilt,and piston of each panel to create the ideal reflector shape.

关键词： Metrology Fringe projection profilometry Off-axis alignment Radio astronomy Radio antenna

How Marie Sklodowska-Curie Doctoral Networks Can Support European Refractory Ecosystem in Context of The European Green Deal

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China's Refractories 2024年第2期33卷 1-9页

作者： Marc HUGER glyn DERRICK Mossaab MOUIYA Andrea SALERNO Kwasi Addo BOATENG Hrikeshava RANGANATHAN Amit Kumar GOPE Institute of Research for Ceramics(IRCER-UMR CNRS 7315) University of LimogesLimoges 87000France

The movement of the Iron&Steelmaking(I&S)industry towards Net-Zero emissions and digitalized processes through disruptive,breakthrough technologies will be achieved through the use of *** biggest challenge for the refractory industry is to continue to meet the performance expectations while,at the same time,moving to a more sustainable production *** complexity and urgency of these technological changes,highlighted by the European Green Deal,requires ambitious,international,interdisciplinary and intersectoral projects,bringing together institutes from across the global value chain,to carry out cutting edge *** European Union,through its flagship doctoral training program,MSCA,has,and continues to support research and development as well as the promotion of the refractory industry in *** introduction to two MSCA projects and some of the results achieved are highlighted within this article.

关键词： FIRE network Horizon 2020 Horizon Europe Marie Sklodowska-Curie Actions Doctoral networks European Green Deal

A Comparative Study of the L2 Pragmatic Competence of University Students in Hong Kong and the Chinese Mainland:The Contributions of Sociocultural Context and Linguistic Proficiency

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Chinese Journal of Applied Linguistics 2024年第3期47卷 371-392,524页

作者： Scott AUBREY Rod ellis Faculty of Education Chinese University of Hong Kong School of Education Curtin UniversityAustralia

This study investigates the differences in pragmatic competence between Hong Kong and Chinese mainland university *** included 19 native speakers of English,115 Chinese mainland students,divided into those who had spent time abroad in an English-speaking country(CM A)and those who had not(CM NA),and 97 Hong Kong students,divided into those from an English-medium secondary school(Hong Kong EMI)and those from a Chinese-medium school(Hong Kong CMI).Linguistic proficiency was measured by a C-test,and pragmatic competence by a Metapragmatic Knowledge Test,an Irony Test and a Monologic Role *** scores were compared using ANCOVAs to control for differences in *** results point to a continuum of pragmatic competence—EMI>CMI>CM A>CM NA—reflecting the groups’access to English in real-life *** differences between the Hong Kong groups and the Chinese mainland groups were clearest in those tests measuring processing capacity(i.e.,Irony Response Time and the Monologic Role Play).CM A,but not CM NA,performed as well as the Hong Kong groups on measures of metapragmatic *** results are discussed in terms of Bialystok’s(1993)distinction between analyzed representation and control of processing.

关键词： pragmatic competence social context Hong Kong the Chinese mainland metapragmatic knowledge processing capacity

Malware incident response(IR) informed by cyber threat intelligence(CTI)

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Science China(Information Sciences) 2022年第7期65卷 256-258页

作者： Ying HE ellis INGLUT Cunjin LUO School of Computer Science and Informatics De Montfort University Key Lab of Medical Electrophysiology Ministry of Education The Health Informatics Group Institute of Cardiovascular Research Southwest Medical University School of Computer Science and Engineering Northeastern University

Dear editor, Security experts have been fighting against cybercriminals for many years and existing research shows that this battle will continue. Malicious software has no remorse when it targets different organizations, regardless of its forms [1]. Ransomware [2] has caused serious issues in different industries, especially in healthcare. The existing report shows that 34% of ransomware is targeting healthcare organizations. Nowadays, criminals prefer crypto-jacking over ransomware (which also relies on cryptocurrency for anonymous ransom payments).

关键词： Malware Analysis Cyber Threat Intelligence Crypto Jacking Incident Response Malware Incident Response

Effect and economic benefit of precision seeding and laser land leveling for winter wheat in the middle of China

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Artificial Intelligence in Agriculture 2022年第1期6卷 1-9页

作者： Jing Chen Chunjiang Zhao glyn Jones Hao Yang Zhenhong Li Guijun Yang Liping Chen Yongchang Wu Institute of Agricultural Economics and Development Chinese Academy of Agricultural SciencesBeijing 100081China Beijing Research Center for Information Technology in Agriculture Beijing Academy of Agriculture and Forestry SciencesBeijing 100097China Fera Science Ltd Sand HuttonYork YO411LZ and Institute for Agri-Food Research and InnovationNewcastle UniverityNewcastle Upon TyneUK School of Engineering Newcastle UniversityNewcastle Upon TyneUK

Rapid socio-economic changes in China,such as land conversion and urbanization,are creating new scopes for the application of precision agriculture(PA).An experiment to assess the economic benefits of two precision agriculture methods was applied for one year–precision seeding and precision seeding with land *** the results for this were positive,of itself it did not provide evidence of longer terms *** costs of land leveling are accrued in a single year but the benefits could carry over into subsequent ***,in this case if the PA method provides carry over benefits to future years,the economic assessment would incorrectly assign all the costs to a single year of benefits *** benefit-cost ratio would be *** gauge whether there was carry over benefits in future years we looked at NDVI and GUI as proxies for future year *** the single year experiment,our results showed that:(1)Winter wheat yield was increased 23.2%through the integration of precision seeding and laser leveling technologies.(2)Both the single technology and the integrated technologies significant reduced the concentration of soil ammonium nitrogen at the depths of 60 cm;(3)The benefit/cost ratio's of the treatments exceeded that of the baseline by approximately 10%which translated to an increase of several hundred US$per *** NDVI analysis showed that the effect of laser land leveling could last to the next two *** considering the multi-year impact of land leveling,the benefit/cost ratio of PSLL will increase to 23.5%and 22.9%with and without laser land leveling *** clear the eco-nomic benefits of using PA technologies will likely promote application of the technologies in the region.

关键词： Precision seeding Laser land leveling Application effect Economic benefit

Methodology of Single Crystal Growth and Microstructure Analysis of CoTi(Zr) Intermetallic Compounds

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Journal of Materials Science & Technology 2005年第6期21卷 817-821页

作者： Mike L.JENKINS glyn TAYLOR Department of Materials University of Oxford Parks Road Oxford OX1 3PH UK

The effects of preparation and crystal growth methods on the microstructure, composition, and oxidation of CoTi（Zr） intermetallics were dealt with . A group of methods has been used to produce CoTi and CoTi（Zr） crystals to prevent the formation of titanium oxide particles during melting and crystal growth. The results show that more oxides formed when using powdered starting materials even though the metals handled were and melted under an inert gas atmosphere; using bulk starting materials produced alloys showed less oxidation than powders, but adding a small amount of AI to getter the oxygen was not sufficient to prevent TiO2 formation. However, using a slightly reducing atmosphere during initial melting was highly effective in reducing the formation of oxide. Crystal growth carried out in Ar did not reduce the amount of oxide but only redistributed the particles. TiO2 particles were found only in the grain boundaries after crystal growing, where they obstructed grain growth. Crystal growth in a vacuum was found to be essential in producing oxide free crystals. A seed selection technique was developed and used in growing CoTi single crystals. The microstructures of the samples were determined using optical microscopy, scanning electron microscopy and transmission electron microscopy, including the morphologies, grain sizes, oxide distributions and crystal structure confirmation.

关键词： CoTi CoTi(Zr) Intermetallics Crystal growth Nicrostructure