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矿焦耦合冶金性能试验及评价方法

钢铁 2024年第2期59卷 44-54页

作者：汪琦宋阳升李廷乐李哲熙 TIMevans 辽宁科技大学材料与冶金学院辽宁鞍山114051 力拓集团西澳大利亚州珀斯6000

铁矿石和焦炭在高炉内各区域的反应及特性是影响高炉炼铁效率和产量的重要因素,准确评价矿焦质量备受炼铁工作者关注。评价矿或焦冶金性能的试验方法及指标迅速发展,且部分方法已标准化,包括铁矿石软熔性能和焦炭反应性及反应后强度的... 详细信息

铁矿石和焦炭在高炉内各区域的反应及特性是影响高炉炼铁效率和产量的重要因素,准确评价矿焦质量备受炼铁工作者关注。评价矿或焦冶金性能的试验方法及指标迅速发展,且部分方法已标准化,包括铁矿石软熔性能和焦炭反应性及反应后强度的试验方法等被钢铁企业广泛采用。然而,通过现有评价矿或焦冶金性能的方法及指标推算高炉技术经济指标尚存难度。原因可能在于没有充分模拟矿焦在高炉中历经还原、溶损、软化-熔融全过程的相互作用,无法对矿焦关联行为及特性进行赋值并构建评价矿焦相互作用的指标体系。因此,提出了采用焦-矿-焦分层试料,模拟矿焦在高炉内还原、溶损、软化和熔融之间关联行为及特性的荷重-热重-气体分析联动试验装置,进行矿焦耦合性能试验及评价的方法(Qisunny法)。变矿或变焦试料的试验结果表明,矿焦耦合冶金性能按间接还原区、间接还原和直接还原及软化区、熔融直接还原和滴落直接还原4个区域依次演变;性能评价指标包括各区域的温度及区间、间接和直接还原度、总间接还原度、熔融区透气性特征值、上层焦炭溶损率及溶损后强度等;焦炭的溶损反应主要发生在熔融区,上层焦炭溶损率与传统指标焦炭反应性指数相近,但其反应后强度明显高于传统指标焦炭反应后强度指数。该方法为评价矿焦冶金性能之间的相互作用、优化矿焦炉料结构提供了一种全新的选择。

关键词：高炉铁矿石焦炭耦合冶金性能评价方法

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犬猫解剖学彩色图谱

New Identities for Weak KAM Theory(For Haim Brezis,in continuing admiration)

2007年

作者： STANLEY H.DONE PETER C.GOODY SUSAN a.evans等

本书收录了一系列细致的犬、猫解剖彩色图片，为读者展示了局部解剖中的一些重要结构特征。

ISBN: (纸本)9787538148268

本书收录了一系列细致的犬、猫解剖彩色图片，为读者展示了局部解剖中的一些重要结构特征。

关键词：犬动物解剖学图谱猫

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Chinese Annals of Mathematics,Series B 2017年第2期38卷 379-392页

作者： Lawrence Craig evans Department of Mathematics University of CaliforniaBerkeleyUSA.

This paper records for the Hamiltonian H =1/2|p|~2+ W(x) some old and new identities relevant for the PDE/variational approach to weak KAM theory.

关键词： Weak KAM theory, Effective Hamiltonian, Hamiltonian dynamics

七星瓢虫唇须感器分布和统计特征的雌雄差异(英文)

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昆虫学报 2007年第7期50卷 667-674页

作者： Daniel G.THORNHAM Maureen E.WAKEFIELD Alison BLACKWELL Kenneth a.evans Keith F.A.WALTERS Central Science Laboratory Sand HuttonYorkYO41 1LZUK Centre for Tropical Veterinary Medicine University of EdinburghEaster Bush Veterinary CentreRoslinMidlothian EH25 9RGUK Scottish Agricultural College West Mains RoadEdinburghEH9 3JGUK

应用扫描电镜观察七星瓢虫Coccinella septempunctata的唇须和附节,以便确认在感应农药残留时起主要作用的化学感受器。研究证明分布在下颚须上的感器类型包括两种锥形感器（兼有机械感受器和化学感受器的功能）和一种钟形感器。同时本... 详细信息

应用扫描电镜观察七星瓢虫Coccinella septempunctata的唇须和附节,以便确认在感应农药残留时起主要作用的化学感受器。研究证明分布在下颚须上的感器类型包括两种锥形感器（兼有机械感受器和化学感受器的功能）和一种钟形感器。同时本文首次报道了对这些感器精确的形态测量,明确了其性二型性。对下颚须的测量表明其左右末节的长度差异与七星瓢虫的性别之间有明显的相关性。文中还记述了下唇须上一种新的钟形感器,其在每个下唇须上的数量大约为12 ~17个。经测量这些机械感受器的平均直径为2.4μm。早期研究中所记述的锥形感器被证实是下唇须上仅有的化学感应器,并且首次证明这些锥形感器的数量与性别相关,雄性平均为18个,雌性平均为16个。附节上也存在性别差异：第2跗节跗垫的宽度在雄性中是从后向前逐渐增大,而在雌性中刚好相反。本文还就这些差异的意义以及新发现感器的功能进行了讨论。

关键词：瓢虫扫描电镜超微结构粘性刚毛形态测量

Social Computing Unhinged

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Journal of Social Computing 2020年第1期1卷 1-13页

作者： James evans University of Chicago ChicagoIL 60637and Santa Fe InstituteSanta FeNM 87501USA.

Social computing is ubiquitous and intensifying in the 21st *** used to reference computational augmentation of social interaction through collaborative filtering,social media,wikis,and crowdsourcing,here I propose to expand the concept to cover the complete dynamic interface between social interaction and computation,including computationally enhanced sociality and social science,socially enhanced computing and computer science,and their increasingly complex combination for mutual *** recommends that we reimagine Computational Social Science as Social Computing,not merely using computational tools to make sense of the contemporary explosion of social data,but also recognizing societies as emergent computers of more or less collective intelligence,innovation and *** further proposes we imagine a socially inspired computer science that takes these insights into account as we build machines not merely to substitute for human cognition,but radically complement *** leads to a vision of social computing as an extreme form of human computer interaction,whereby machines and persons recursively combine to augment one another in generating collective intelligence,enhanced knowledge,and other social goods unattainable without each *** the example of science and technology,I illustrate how progress in each of these areas unleash advances in the others and the beneficial relationship between the technology and science of social computing,which reveals limits of sociality and computation,and stimulates our imagination about how they can reach past those limits together.

关键词： social computing complex systems computer supported cooperative work computational social science artificial intelligence human computer interaction human-centered computing

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适应与平衡——当今的思考

适应与平衡——当今的思考

Combined Generalized Hubbert-Bass Model Approach to Include Disruptions When Predicting Future Oil Production

第十四次国际颅面生长发育与功能研讨会、第十一次全国口腔正畸学术会议

作者： Carla a.evans 美国伊利诺伊大学芝加哥分校牙科学院正畸科美国伊利诺伊大学工程学院国际和美国牙科研究协会颅面生物学组美国牙科研究协会芝加哥区美国牙科协会牙科信息标准委员会正畸电子病历标准工作组

在颅面基因和分子生物学时代,环境信号在发育过程中的作用容易被忽略。形态和功能的相互作用在正畸领域非常实用,但是它们同时也容易被混淆,并充满争议。本报告将会总结目前关于适应,平衡和物理刺激与正畸治疗的关系。牙齿移动的牙槽骨...

在颅面基因和分子生物学时代,环境信号在发育过程中的作用容易被忽略。形态和功能的相互作用在正畸领域非常实用,但是它们同时也容易被混淆,并充满争议。本报告将会总结目前关于适应,平衡和物理刺激与正畸治疗的关系。牙齿移动的牙槽骨界限和软组织对骨改建的反应是这一领域的研究热点。本报告将会重点介绍这些正在进行中的研究应用于临床的可能性。

关键词：

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Natural Resources 2010年第1期1卷 28-33页

作者： Steve H. Mohr geoffrey M. evans School of Engineering The University of Newcastle

In a previous study [1] the authors had developed a methodology for predicting global oil production. Briefly, the model accounted for disruptions in production by utilising a series of Hubbert curves in combination with a polynomial smoothing function. Whilst the model was able to produce predictions for future oil production, the methodology was complex in its implementation and not easily applied to future disruptions. In this study a Generalized Bass model approach is incorporated with the Hubbert linearization technique that overcomes these limitations and is consistent with our previous predictions.

关键词： Generalized Bass Model Hubbert Curve Oil Production

Review： Sugar beets as a substitute for grain for lactating dairy cattle

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Journal of Animal Science and Biotechnology 2017年第3期8卷 539-548页

作者： Essi evans Ulrike Messerschmidt Technical Advisory Services Inc 64 Scugog St Bowmanville ON L1C3J Canada KWS SAAT SE Grimsehlstr. 31 P.O. Box 1463D-37555 Einbeck Germany

Dairy cows are customarily given grains and highly digestible byproduct ingredients as additions to forage to support milk production. In many parts of the world growing seasons are short, and the grain crops that can be grown may not provide adequate yields. Sugar beets, on the other hand are relatively hardy, and dry matter yields surpass the yields of most grain crops. There are however, perceptions that beets may not be suitable as a feed ingredient due to the fact that the storage form of carbohydrate is sugar rather than starch. With little analytical support, sugar has been rejected in many feeding programs with the view that sugar reduces rumen pH, fiber digestion and microbial yield. This review explores available facts revolving around these concerns. Information regarding the feeding of sugar beets is provided and the use of sugar beets as a partial replacement for grain is proposed.

关键词： Dairy cattle Feed beets Fodder beets Methane Sugar Sugar beets

A CLASS OF ASYNCHRONOUS MATRIX MULTI-SPLITTING MULTI-PARAMETER RELAXATION ITERATIONS

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Journal of Computational Mathematics 1998年第3期16卷 221-238页

作者： Bai, ZZ Wang, DR evans, DJ Chinese Acad Sci ICMSEC Beijing 100080 Peoples R China Shanghai Univ Dept Math Shanghai 201800 Peoples R China Loughborough Univ Technol Dept Comp Studies Loughborough LE11 3TU Leics England

A class of asynchronous matrix multi-splitting multi-parameter relaxation methods, including the asynchronous matrix multisplitting SAOR, SSOR and SGS methods as well. as the known asynchronous matrix multisplitting AOR, SOR and GS methods, etc., is proposed for solving the large sparse systems of linear equations by making use of the principle of sufficiently using the delayed information. These new methods can greatly execute the parallel computational efficiency of the MIMD-systems, and are shown to be convergent when the coefficient matrices are H-matrices. Moreover, necessary and sufficient conditions ensuring the convergence of these methods are concluded for the case that the coefficient matrices are L-matrices.

关键词： system of linear equations asynchronous iteration matrix multisplitting relaxation convergence