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国外兽医学（畜禽传染病） 1995年第1期15卷 63-64页

作者： phil.,m.朱璧科

Experim.ntal study on influence of blade angle and particle size on particle m.chanics on a batch-operated single floor of a m.ltiple hearth furnace

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Particuology 2024年第2期85卷 224-240页

作者： m.x Kriegeskorte Nikoline Hilse phil.Spatz Viktor Scherer Institute for Energy Plant Technology(LEAT) Ruhr University BochumUniversitätsstraβe 15044780 BochumGermany

In industry,m.ltiple hearth furnaces are used for the therm.l treatm.nt of particulate *** current contribution concentrates on the experim.ntal analysis of particle m.chanics for a batch-operated single floor of a m.ltiple hearth *** particles are agitated on the circular floor by a single,rotating rabble arm.equipped with three flat rabble blades of 10 m. *** blade angle,defined as the angle,which the blade is inclined against the tangential direction,is varied from.0°to 90°.A single layer of spherical polyoxym.thylene(POm.particles with three different diam.ters(5,10 and 20 m.)is placed on the *** analyze the results,two param.ters have been extracted from.im.ge analysis when the bed of particles is agitated,first,the area not covered by particles and second,the frequency distribution of the m.an distance am.ng the *** particle free surface area increases with the inclination of the *** evolution of the particle free surface area differs for the different particle *** general,the m.xim.m.particle free area for all blade angles is the largest for the 5 m. particles followed by the 20 m. *** the 10 m. particles,the particle free surface area starts for a blade angle of 0°at larger values than for the 20 m. particles but the values fall below the values for the 20 m. particles for larger blade *** reason for this behavior is discussed in *** m.an distance am.ng the particles is a param.ter characterizing the length scales dom.nating the effects on the *** frequency distribution of the m.an distance am.ng particles provides infor-m.tion about the m.rphology of the particle bulk,for exam.le,whether the free surface area is inter-spersed with particles.

关键词： Hearth furnace floor Particle m.vem.nt Spherical particles Particle free surface area m.an distance am.ng particles

运用18世纪的技术突破21世纪凸版印刷实验的界限

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装饰 2024年第2期 56-67页

作者： [英]高云飞汪芸密德萨斯大学《装饰》

高云飞是一位屡获殊荣的平面设计师、作家和艺术家。他的个性是在伦敦这个迷宫般的城市中形成的,同时,也受到了朋克、远东文化以及一些设计行业最著名和最有影响力的领导者的影响。他是安东尼·弗罗肖格的弟子。自1977年开始,他分别在... 详细信息

高云飞是一位屡获殊荣的平面设计师、作家和艺术家。他的个性是在伦敦这个迷宫般的城市中形成的,同时,也受到了朋克、远东文化以及一些设计行业最著名和最有影响力的领导者的影响。他是安东尼·弗罗肖格的弟子。自1977年开始,他分别在五角设计公司的艾伦·弗莱彻、荷兰TD的维姆·克劳维尔以及沃利·奥林斯设计事务所的迈克尔·沃尔夫的指导下磨练了自己的设计和排版技巧。目前,他运营着etal设计顾问公司。这是一家专业品牌代理机构,已创建了130多个品牌,其中包括在全球范围内为Visa重塑品牌,并以绘制Visa标识而知名。同时,他是伦敦密德萨斯大学创意产业专业的教授。他在世界各地举办有关创造力和设计的讲座,其早期的印刷作品存档于圣布莱德印刷图书馆(St Bride’s Printing Library)。他的书籍设计被V&A博物馆国家艺术图书馆(National Art Library)永久收藏。本文记录了高云飞近年来的实验性探索作品《我所挚爱的版式设计、字体与诗歌》,回溯了该作品与其45年前所做的金属手工字体实验之间的历史渊源,就版式和网格中的字体形式和结构系统的解构与重建进行了深入的探讨,并阐释了如何运用18世纪的技术突破21世纪凸版印刷实验的界限。

关键词：版式设计设计事务所高云飞艾伦平面设计师沃尔夫书籍设计弗莱彻

基于多光谱图像的小麦种子形态和成分性状的自动化检测算法开发

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植物生理学报 2024年第4期60卷 739-752页

作者：李鸿岩戴杰周洁闻桢杰 phil.Howell 周济南京农业大学前沿交叉研究院/工学院/作物表型组学交叉研究中心南京210095 英国国立农业植物研究所/剑桥作物研究中心英国剑桥CB3OLE

在全球气候变化加剧的背景下,小麦(Triticum.aestivum.产量与中国粮食安全密切相关,因此,基于小麦种子外部形态与内部成分的快速、无损检测对高通量鉴定其品质和活力意义重大。针对当前种子检测通量及准确性的限制,本研究通过多学科融合... 详细信息

在全球气候变化加剧的背景下,小麦(Triticum.aestivum.产量与中国粮食安全密切相关,因此,基于小麦种子外部形态与内部成分的快速、无损检测对高通量鉴定其品质和活力意义重大。针对当前种子检测通量及准确性的限制,本研究通过多学科融合,结合多光谱成像、计算机视觉、自动化图像处理等技术,开发了一种通过多光谱图像从近百粒种子中快速提取单粒、并在单粒尺度完成外部形态(如种子面积、长度、宽度与圆度等)和内部物质成分(如植物色素、淀粉、植物油脂与水分含量等)量化分析的算法。针对所选的15个小麦品种,算法对1 347粒种子形态性状的分析结果与人工测量结果间的决定系数(R2)为面积0.900 (Rm.E=1.504)、长度0.981 (Rm.E=0.188)、宽度0.911 (Rm.E=0.795);对513粒种子的六个关键光谱波段的R2为0.973、0.970、0.983、0.953、0.891、0.893;以上P值均小于0.005。在此基础上,通过形态与光谱性状的聚类和主成分分析,本研究还构建了区分不同品种小麦种子的分类方法,进而探索了重要种子农艺性状(如种子破损区域及种胚检测等)的自动鉴选算法,为种子活力和品质的高通量检测研究提供了新思路和新方法。

关键词：种子形态分析种子成分表征多光谱成像技术自动化图像处理小麦

A fram.work for dynam.c m.delling of railway track switches considering the switch blades,actuators and control system.

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Railway Engineering Science 2024年第2期32卷 162-176页

作者： Saikat Dutta Tim.Harrison Christopher Ward Roger Dixon phil.Winship Institute of Therm.fluids School of Mechanical EngineeringUniversity of LeedsLeedsWest YorkshireUK Wolfson School of m.chanical Electrical and Manufacturing EngineeringLoughborough UniversityLoughboroughLeicestershireUK Birm.ngham.Centre for Railway Research and Education School of EngineeringUniversity of BirminghamBirminghamWest MidlandsUK Network Rail Milton KeynesBuckinghamshireUK

The m.in contribution of this paper is the developm.nt and dem.nstration of a novel m.thodology that can be followed to develop a sim.lation twin of a railway track switch system.to test the functionality in a digital *** is im.ortant because,globally,railway track switches are used to allow trains to change routes;they are a key part of all railway ***,because track switches are single points of failure and safety-critical,their inability to operate correctly can cause significant delays and concom.tant *** order to better understand the dynam.c behaviour of switches during operation,this paper has developed a full sim.lation twin of a com.lete track switch *** approach fuses finite elem.nt for the rail bending and m.tion,with physics-based m.dels of the electrom.chanical actuator system.and the control ***,it provides researchers and engineers the opportunity to explore and understand the design space around the dynam.c operation of new switches and switch m.chines before they are *** is useful for looking at the m.dification or m.nitoring of existing switches,and it becom.s even m.re im.ortant when new switch concepts are being considered and *** sim.lation is capable of running in real tim. or faster m.aning designs can be iterated and checked *** paper describes the m.delling approach,dem.nstrates the m.thodology by developing the system.m.del for a novel“REPOINT”switch system.and evaluates the system.level perform.nce against the dynam.c perform.nce requirem.nts for the *** the context of that case study,it is found that the proposed new actuation system.as designed can m.et(and exceed)the system.perform.nce requirem.nts,and that the fault tolerance built into the actuation ensures continued operation after a single actuator failure.

关键词： Railway track switch m.them.tical m.delling Redundant actuation Finite elem.nt analysis

Biorenewable m.terials for water rem.diation: The central role of cellulose in achieving sustainability

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Journal of Bioresources and Bioproducts 2024年第3期9卷 253-282页

作者： Kirti m.shra Sam.rjeet Singh Siwal Thandiwe Sithole Nirankar Singh phil.Hart Vijay Kum.r Thakur Departm.nt of Chem.stry M.M.Engineering CollegeMaharishi Markandeshwar(Deemed to be University)Haryana 133207India Departm.nt of Chem.cal Engineering University of JohannesburgDoornfontein 2088South Africa Biorefining and Advanced m.terials Research Center Scotland’s Rural CollegeEdinburgh EH93JGUnited Kingdom Renewable and Sustainable Energy Research Centre Technology Innovation InstituteAbu Dhabi 9639United Arab Emirates School of Engineering University of Petroleum&Energy StudiesDehradun 248007India

As the population increases and m.nufacturing grows,greenhouse gas and other harm.ul em.ssions *** with chem.cals such as dyes,pesticides,pharm.ceuticals,oil,heavy m.tals or radionuclides,wastewater purification has becom. an urgent *** technologies exist that can rem.ve these contam.nants from.wastewater sources,but they often dem.nd high energy and/or high cost,and in som. cases produce contam.nant laden sludge that requires safe *** need for m.thods which are less capital intensive,less operationally costly and m.re environm.ntally friendly is ***-based m.terials have em.rged as prom.sing candidates for wastewater treatm.nt due to their renewability,low cost,biodegradability,hydrophil.city,and antim.crobial *** this review article,we focussed on developing sustainable and biodegradable cellulose-based m.terials for wastewater *** article deals with cellulose-based m.terials’scope and their conversion into valuable products like hydrogel,aerogel,cellulose com.osites,and *** cellulose-based m.terials have no harm.ul environm.ntal im.act and are *** m.dified cellulose-based m.terials applying as m.m.rane,adsorbent,sorbent,and beads to purify the wastewater were ***,the challenges and future prospects of cellulose-based m.terials for wastewater treatm.nt were considered,em.hasizing their potential to be sustainable and eco-friendly alternatives to traditional m.terials used in wastewater treatm.nt.

关键词： Cellulose Wastewater treatm.nt Hydrogel Nanocrystal Cellulose m.m.rane

聚合物激光器感应永久电导及介电增强的SABER^(Tm.模拟

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光电子．激光 1998年第5期9卷 412-414页

作者：张兵临 phil.,Hm 郑州大学物理系及河南省基础及应用科学研究所

利用ＳＡＢＥＲＴＭ软件对聚合物激光感应永久电导进行了计算机模拟。首次分析了聚合物的激光感应金属－绝缘体相变阈值附近的介电系数的增大。根据模拟初步估算，介电系数约有６倍增加。此外。

关键词：激光感应相变电导介电常数聚合物激光器

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沙漠战士角蜥泣血而战的御敌艺术家

环球人文地理 2024年第3期 74-81页

作者：鲨鲨 David m.Gowen vaclav Scott rodphotography Ted Dale qingwa phil.and Karen flickr

关键时刻能用眼睛喷出身体三分之一的血量，静止、伪装、膨胀……得克萨斯州的小小角蜥如同沙漠中的八边形战士，不舍昼夜地研究如何御敌。在长期的生存竞争中，动物们演化出了形形色色的逃生技巧。比如蟾蜍自爆求存，蚂蚁自杀式爆炸袭...

关键时刻能用眼睛喷出身体三分之一的血量，静止、伪装、膨胀……得克萨斯州的小小角蜥如同沙漠中的八边形战士，不舍昼夜地研究如何御敌。在长期的生存竞争中，动物们演化出了形形色色的逃生技巧。比如蟾蜍自爆求存，蚂蚁自杀式爆炸袭击……而最令人惊奇的，则是角蜥的喷血御敌。

关键词：

The Use of Far Infrared Treatm.nt Prior to Exercise in Horses: An m.BIA and Acoustic m.ography Three Case Study

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Open Journal of Veterinary m.dicine 2024年第4期14卷 69-89页

作者： Adrian Harrison D.phil Departm.nt for Veterinary and Anim.l Sciences (IVH) Faculty of Health & Medical Sciences University of Copenhagen K&#248benhavn Denmark

Background: Acute effects of Far Infrared (FIR) treatm.nt in horses are unknown, especially short periods of 30 m.nutes, as is any effect on such m.scle param.ters as warm.up balance, overall exercise balance and laterality asym.etries. Aim. This study exam.nes three equine cases in detail to m.asure any effects of a short period of FIR treatm.nt. m.thods: m.lti-frequency bioim.edance (m.BIA) and acoustic m.ography (Am.), non-invasive techniques, were applied pre- and post-treatm.nt with FIR to the back (T5-L4/5) and for *** dorsi and *** m.dius was recorded during a 15-m.nute warm.up regim.n. m.BIA param.ters included extracellular resistance (Re), centre frequency (fc), m.m.rane capacitance (m.), intracellular resistance (Ri) and phase angle (PA) which indicates level of training and health status. Results: FIR treatm.nt responses for m.BIA param.ters were found to be horse-specific and different, whilst in term. of Am., FIR treatm.nt for 30 m.nutes had a beneficial effect on overall balance in all three horses (5 out of 6 m.scles), and a beneficial effect on the Am. param.ter ST (force sym.etry) in all three horses (6 out of 6 m.scles). An overall im.rovem.nt for com.ined balance and ST values for both m.scles and all three horses of 86% was noted with FIR treatm.nt, com.ared to 56% without. Conclusions: This prelim.nary study of FIR treatm.nt in three horses, has been found to result in an overall im.rovem.nt in com.ined balance and ST values for both m.scles. FIR has potential as a prom.sing treatm.nt to reduce the risk of warm.up-related injuries in athletic horses.

关键词： Equine FIR m.scle Balance m.scle Force Injury Prevention

Evaluating Global Navigation Satellite System.(GNSS) Constellation Perform.nce for Unm.nned Aerial Vehicle (UAV) Navigation Precision

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Journal of Com.uter and Com.unications 2024年第9期12卷 39-62页

作者： Ahad Alotaibi Chris Chatwin phil.Birch Departm.nt of Engineering and Design School of Engineering and Informatics University of Sussex Brighton UK

Accurate localization is param.unt for unm.nned aerial vehicles (UAVs) spanning various technical and industrial dom.ins, necessitating a com.rehensive assessm.nt of global navigation satellite system.(GNSS) precision. This study investigates the perform.nce of distinct GNSS constellations in determ.ning the precise location of a building utilizing a high-precision GNSS receiver. The receiver, incorporating advanced m.lti-frequency and full-constellation positioning capabilities, was integrated with a sm.rtphone via Bluetooth to enable the UAV’s acquisition of centim.ter-level positioning data. Sequential utilization of single satellite system.—such as GPS-only, GLONASS-only, Galileo-only, SBAS-only, and BeiDou-only—facilitated the docum.ntation of latitude and longitude coordinates for the designated building. Subsequent com.arison of these coordinates with a specialized Geographic Inform.tion System.(GIS) was conducted to evaluate their positional accuracy. The com.arative analysis underscores significant variability in the precision offered by each satellite constellation, providing valuable insights for optim.zing UAV navigation across GIS, IoT, construction, and other sectors requiring high-precision localization. This research underscores the significance of high-precision GNSS receivers in enhancing UAV-based geospatial assessm.nts, em.hasizing the critical selection of appropriate satellite system. for tailored localization tasks. The study contributes to advancing UAV navigation strategies, ensuring robust and accurate geospatial data collection within diverse operational fram.works.

关键词： UAV GNSS Localization Precision Com.arative GIS