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人类行为对自然生态系统改变的研究──以大洋岛屿为例

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世界地理研究 2001年第1期10卷 91-97页

作者： Partick h. Armstrong 刘岩张磊西澳大学河北师范大学石家庄050016

本文聚焦于人类活动在印度洋和中、高纬度大洋中遥远岛屿的表象。着重阐述了人类行为对自然生态系统的影响。文章通过对建筑、采矿、生物引进，以及旅游业开发等人类活动的若干方面的观察和考证，总结认为世界上不存在孤立地域，没有哪... 详细信息

本文聚焦于人类活动在印度洋和中、高纬度大洋中遥远岛屿的表象。着重阐述了人类行为对自然生态系统的影响。文章通过对建筑、采矿、生物引进，以及旅游业开发等人类活动的若干方面的观察和考证，总结认为世界上不存在孤立地域，没有哪一个环境能够保持与世界的经济和政治体系毫不相干。

关键词：人类行为岛屿生态环境自然生态系统印度洋建筑采矿旅游业

Development of GPS-Based Multi-Ch.nnel Controllers for Research.Plot Pesticide Applicators

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Agricultural Sciences 2017年第4期8卷 302-315页

作者： Ah.ad Kh.lilian Young J. h.n Joe M. Maja James Th.mas Mich.el w. Marsh.ll Ali Mirzakh.ni-Nafch. Jose O. Payero Daniel J. Anco Department of Agricultural Sciences Clemson University Clemson USA Edisto Research.and Education Center Clemson University Blackville USA Department of Plant and Environmental Sciences Clemson University Clemson USA

Pesticide efficacy tests are typically conducted in experimental plots w.ich.involve applying multiple ch.mical treatments at different application rates and timings. Utilizing a single boom pesticide applicator requires navigating to individual plots, applying a pesticide assigned to th.se plots and w.en all replications are completed, cleaning th. equipment and reloading th. next pesticide treatment into th. tank. It usually takes several h.urs to accomplish.th.s task, especially w.en th. left h.nd side of a plot requires a different pesticide treatment th.n th. righ. h.nd side. In order to facilitate application of pesticide treatments in experimental plots, tw. map-based controller systems w.re developed to drive multi-ch.nnel pesticide applicators. Th. Clemson “Multi-Ch.nnel Ch.mical Controllers” consist of solid-state relays controlled by custom softw.re, solenoid valves, and GPS receivers. Th. first system can control up to 24 individual booms w.ich.could independently apply up to 24 different ch.mical treatments in each.field plot area. Th. second system is th. Clemson “Intelligent Farm Controller” (iFc), w.ich.could be connected to a variety of devices, such.as spray and motor actuators. For th.s study, th. controller w.s designed to h.ndle four output pins to control four relays;h.w.ver, it could easily be expanded to control more relays, if needed. On average, th.se systems reduced application times in test fields from six h.urs to 20 minutes, compared to single-boom applicators (p = 0.001), th.reby reducing th. time interval betw.en treatment applications and significantly reducing th. potential effect of adverse w.ath.r.

关键词： Controllers Spray booms Precision Agriculture GPS Pesticides

Th.racic surgery in 2030

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中华胸部外科电子杂志 2021年第3期8卷 145-152页

作者： Joyce w.Y.Ch.n Rainbow.w.h.Lau Aliss T.C.Ch.ng Ivan C.h.Siu Teddy h.Y.w.ng Zh.ng Li Calvin S.h.Ng Department of Surgery Prince of Wales Hospitalthe Chinese University of Hong KongHong Kong SARChina

Introduction Th.racic surgery h.s evolved at an exponential pace since th. first clinical lung resection in *** first pneumonectomy w.s performed in 1895,th. first lobectomy in 1901,w.ile double lumen endotrach.al intubation for pulmonary resection did not occur until *** 1990s saw.th. development of game-ch.nger video-assisted th.racoscopic surgeries(VATS),w.ile th. 2000s gave w.tness to th. explosive boom of robotic *** Abrah.m Lincoln once said,“Th. best w.y to predict th. future is to create it”,in th.s article w. discuss th. current cutting-edge tech.ologies and attempt to predict th. future of th.racic surgery in 10 years’time.

关键词： surgery lung clinical

Th. Prosperous Age of Castings,2005-2050 and Th. Implications for th. Ch.nese Foundry Executive

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The Prosperous Age of Castings,2005-2050 and The Implication...

早期钩体病患者血清钩体DNA聚合酶链反应和地高辛—硷性磷酸酶发光体探针杂交分析

中国铸造工业首届高层论坛

作者： M.w.Sw.rtzlander Ash.and Casting Solutions Group Dublin Ohio USA

Th.re is no doubt th.t th. metal casting industry is booming in Ch.na. Th. tremendous grow.h.in infrastructure and resulting h.ge appetite for durable goods is driving th. need for castings at double digit rates. As w.ll, th. entire w.rld is sourcing more raw.castings from Ch.na, as w.ll as assembled end-use products th.t contain castings. Th.se trends are likely to continue in th. near term and assure a continuing boom for Ch.nese foundries. Ch.na is, in fact, one of several emerging markets th.t, combined, w.ll add th. equivalent of one entirely new.U. S. economy every decade from now.until 2050. Th.s, alone, w.ll double th. rate of casting grow.h.compared to th. past several decades. Metallurgical developments are rapidly enh.ncing performance/cost ratio for metals, just at th. time costs for competing h.drocarbon-based materials are escalating to new.h.gh. and likely to continue escalating as h.drocarbons become scarce. As w.ll, extraction and manufacturing tech.ologies offer th. possibility to dramatically reduce costs for metals h.ving superior properties, such.as magnesium and titanium Finally, casting design and manufacturing are becoming increasingly more capable, flexible and cost effective. Th.s paper explores th. rationale for our belief th.t w. are w.tnessing th. beginning of Th. Prosperous Age of Castings and provides some guidance specific to Ch.nese foundry industry executives on h.w.to catch.th. w.ve.

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华西医科大学学报 1992年第3期23卷 251-255页

作者：鲍朗戴保民 Gravekamp C h.rtskeerl R Terpstra w 华西医大钩端螺旋体病研究室 w.O/FAO钩体病参考研究中心荷兰皇家热带医学研究院

作者从已建立的问号钩体基因文库中筛选合成一对引物G_1G_2,中国四川14份早期钩体病患者血清中的DNA经硫酸氰胍、二氧化硅和蛋白酶K纯化后,在G_1G_2引导下行聚合酶链反应(PCB),并以地高辛标记的同源探针行DNA印迹杂交,全部血清样品均获... 详细信息

作者从已建立的问号钩体基因文库中筛选合成一对引物G_1G_2,中国四川14份早期钩体病患者血清中的DNA经硫酸氰胍、二氧化硅和蛋白酶K纯化后,在G_1G_2引导下行聚合酶链反应(PCB),并以地高辛标记的同源探针行DNA印迹杂交,全部血清样品均获得确切地阳性结果。用地高辛—硷性磷酸酶发光体标记PCR扩增的同源DNA探针,与16株Yasuda基因组钩体作DNA印迹分析,其中8株存在同源单拷贝序列,它们皆为我国常见和流行的优势致病菌株,本研究结果表明:引物G_1G_2可用于四川钩体PCR检测和分析,PCR常规结合同源DNA探针杂交识别,能提高其敏感性和可靠性;地高辛—硷性磷酸酶发光体配合PCR等方法,可使微量DNA的检测和分析更趋完善。同时,本研究还提供了有价值的钩体DNA同源序列资料。

关键词：钩端螺旋体病聚合酶链反应

Th. IN SITU PRACLAY DEMONSTRATION & CONFIRMATION EXPERIMENTS

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THE IN SITU PRACLAY DEMONSTRATION & CONFIRMATION EXPERIMENTS

Post-acute pancreatitis diabetes:A complication w.iting for more recognition and understanding

第二届废物地下处置学术研讨会

作者： F.Bernier J.Verstrich. w.Bastiaens European Underground Research.Infrastructure for Disposal of Nuclear w.ste in Clay Environment-ESV EURIDICE GIE

Th. PRACLAY Demonstration & Confirmation Experiments consist in th. experimental w.rk and th. supporting studies related to th. ch.racterisation,th. verification,th. confirmation and th. demonstration of relevant elements of th. disposal system for vitrified h.at emitting w.ste in boom *** programme includes surface and in situ large scale *** th.s time th. PRACLAY Demonstration & Confirmation Experiments are divided in tw. main parts:PRACLAY IN SITU and PRACLAY SURFACE. Th.s paper describes th. ach.evements and th. future w.rks of th. IN SITU part of th. *** ach.evements are th. demonstration of th. construction of sh.fts and galleries at industrial scale and th. ch.racterisation of th. h.dro-mech.nical response of th. h.st *** geotech.ical measurements h.ve been performed around *** betw.en in-situ measurements and modelling results allow.d a continuous improvement of our know.edge on th. boom Clay *** future w.rks w.ll consist mainly in th. realisation of th."PRACLAY h.ater Experiment"a large scale h.ater *** th.s purpose,a blind gallery about 45 m long w.ll be excavated using a tunneling *** diameter w.ll be 2.5 *** design study of th. experiment pointed out th. importance of th. h.dromech.nical conditions prevailing during th. th.rmal ph.se.

关键词： clay instrumentation excavation th.rmo h.dro mech.

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w.rld Journal of Gastroenterology 2023年第28期29卷 4405-4415页

作者： Diego García-Compeán Alan R Jiménez-Rodríguez Juan M Muñoz-Ayala José A González-González h.ctor J Maldonado-Garza Jesús Z Villarreal-Pérez Department of Gastroenterology Autonomous University of Nuevo LeónMonterrey 64700Nuevo LeónMexico Department of Endocrinology Autonomous University of Nuevo LeónMonterrey 64700Nuevo LeónMexico

Post-acute pancreatitis diabetes(PAPD)is th. second most common type of diabetes below.type 2 diabetes *** to th. boom in research.on th.s entity carried out during th. last decade,its recognition h.s ***,much.of th. medical community still does not recognize it as a medium and long-term complication of acute pancreatitis(AP).Recent prospective coh.rt studies sh.w.th.t its incidence is about 23%globally and 34.5%in patients w.th.severe *** th. overall increase in th. incidence of AP th.s complication w.ll be certainly seen more *** to its h.gh.morbidity,mortality and difficult control,early detection and treatment are ***,its risk factors and path.ph.siological mech.nisms are not clearly *** diagnosis sh.uld be made excluding pre-existing diabetes and applying th. criteria of th. American Diabetes Association after 90 d of resolution of one or more AP *** review.w.ll sh.w.th. evidence publish.d so far on th. incidence and prevalence,risk factors,possible path.ph.siological mech.nisms,clinical outcomes,clinical ch.racteristics and preventive and corrective management of *** important gaps needing to be clarified in forth.oming studies w.ll also be discussed.

关键词： Acute pancreatitis Diabetes mellitus Ch.onic pancreatitis Post-pancreatitis diabetes Pancreatogenic diabetes

Design and development of large-scale in-situ PRACLAY h.ater test and h.rizontal h.gh.level radioactive w.ste disposal gallery seal test in Belgian h.DES

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Journal of Rock Mech.nics and Geotech.ical Engineering 2010年第2期2卷 103-110页

作者： X.L.Li w.Bastiaens P.Van Marcke J.Verstrich. G.J.Ch.n E.w.etjens X.Sillen European Underground Research.Infrastructure for Disposal of Nuclear w.ste in Clay Environment EURIDICEMol00Belgium Belgian Nuclear Research.Center（SCK·CEN） Mol2400Belgium

In Belgium,th. boom clay w.s selected as a potential h.st formation for th. disposal of h.gh.level radioactive w.ste（h.w..To demonstrate th. suitability of boom clay for bearing th.rmal load induced by th. h.w.a large-scale in-situ h.ater test,called PRACLAY h.ater test,w.ll be conducted in th. underground research.laboratory（URL） in *** to th. limitations of th. test（a sh.rt period of time compared w.th.th.t considered in a real repository,different boundary conditions,etc.）,th. test is designed to simulate,in a conservative w.y,th. most critical state and ph.nomena th.t could occur in th. h.st *** PRACLAY gallery w.s excavated at th. end of 2007;th. h.ating ph.se w.ll begin in 2010 and w.ll last for at least 10 *** PRACLAY gallery itself leaves an opportunity to study th. possibilities of sealing a disposal drift in boom clay and testing th. feasibility of h.draulic cut-off of any preferential path.1}y to th. main access gallery th.ough.th. excavation damage zone（EDZ） and th. lining w.th.a seal in a h.rizontal drift（h.rizontal seal）.Indeed,th.s is a generic problem for all deep geological disposal facilities for *** annular seal made of compacted sw.lling bentonite w.ll be installed in th. front of th. h.ated part of th. PRACLAY gallery for th.se *** paper provides detailed considerations on th. th.rmo-h.dro-mech.nical（Th.） boundary conditions for th. design of th. PRACLAY h.ater test and th. seal test w.th.th. support of numerical *** is believed th.t th.se important items considered in th. PRACLAY h.ater test design also constitute key issues for th. repository *** outcome of th. PRACLAY h.ater test w.ll be an important milestone for th. Belgian repository design.

关键词： h.gh.level radioactive w.ste(h.w. boom clay PRACLAY h.ater test h.draulic cut-off th.rmo-h.dro-mech.nical(Th.) boundary conditions scoping calculation

2005～2050铸造的繁荣时期——予中国铸造行业经营者的启示

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铸造技术 2005年第8期26卷 659-663页

作者：麦克尔.施华德美国俄亥俄州亚什兰集团精细化工品公司

中国基础设施的巨大改善以及由此所引起的对于金属耐久品的大幅需求,无疑都推动了金属铸件市场需求呈两位数的速度增长。同时,全世界都在从中国寻找更多的铸件以及装配好的包含铸件的终端成品。这种趋势很有可能在近期持续下去,并且一... 详细信息

中国基础设施的巨大改善以及由此所引起的对于金属耐久品的大幅需求,无疑都推动了金属铸件市场需求呈两位数的速度增长。同时,全世界都在从中国寻找更多的铸件以及装配好的包含铸件的终端成品。这种趋势很有可能在近期持续下去,并且一定会给中国铸造厂商带来不断发展的机遇。事实上作为几个新兴的巨大市场之一,中国和其它几个国家将从现在到2050年增长到与全美经济相当。与过去的几十年的比较,这将会双倍加速金属铸件增长的速率。当碳氢化合的原料的竞争市价提高到一个新高度以及由于碳氢化合物的日益稀少而可能使价格持续增长的时候,冶金学的快速发展恰恰改进了金属性能和成本率。同时,提炼和制造技术也提供了大幅降低金属铸造成本的更好道具,例如镁和钛。最后,工艺设计和制造变得更加多产、灵活以及节约成本。本文旨在为我们见证铸造繁荣时期的开始,以及对如何紧跟潮流给中国的铸造工业经营者们提供一些指导性建议。

关键词：中国铸造业金属铸件市场需求全球经济新金属时代