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| 1 | OSCILLATION CRITERIA FOR NONLINEAR SECOND ORDER ELLIPTIC DIFFERENTIAL EQUATIONS显示文摘The second order elliptic differential equations are considered in an exterior domain Ω Rn, n≥2, where p can chang sign. Some new sufficient conditions for the oscillation of solutions of (1.1) and (1.2) are established. | ZHANG BINGGEN ZHAO TAO B. S. LALLI (Department of Mathematics, Ocean University of Qingdao, Qingdao 266003, China.)(Department of Mathematics, Arizona State University, U.S.A.)(Departmemt of Mathematics, University of Saskatchewan, Canada.) | 1996 | Chinese Annals of Mathematics,Series B1996，17，1： | 12 |
| 2 | Changes in biodiversity and ecosystem function during the restoration of a tropical forest in south china显示文摘Tropical forests continue to vanish rapidly,but few long-term studies have ever examined if and how the lost forests can be restored.Based on a 45-year restoration study in south China,we found that a tropical rain forest,once completely destroyed,could not recover naturally without deliberate restoration efforts.We identified two kinds of thresholds that must be overcome with human ameliorative measures before the ecosystem was able to recover.The first threshold was imposed primarily by extreme physical conditions such as exceedingly high surface temperature and impoverished soil,while the second was characterized by a critical level of biodiversity and a landscape context that accommodates dispersal and colonization processes.Our three treatment catchments(un-restored barren land,single-species plantation,and mixed-forest stand)exhibited dramatically different changes in biodiversity and ecosystem functioning over 4 decades.The mixed forest,having the highest level of biodiversity and ecosystem functioning,possesses several major properties of tropical rain forest.These findings may have important implications for the restoration of many severely degraded or lost tropical forest ecosystems. | REN Hai,LI ZhiAn,SHEN WeiJun,YU ZuoYue,PENG ShaoLin,LIAO ChongHui,DING MingMao & WU JianGuo 1 South China Botanical Garden,Chinese Academy of Sciences,Guangzhou 510650,China 2 Institute of Ecology and Evolution,Zhongshan University,Guangzhou 510275,China 3 Guangdong Institute of Entomology,Guangzhou 510275,China 4 School of Life Sciences and Global Institute of Sustainability,Arizona State University,Tempe,AZ 85287,USA | 2007 | Science China(Life Sciences)2007，50，2： | 9 |
| 3 | Confocal microscopic evaluation of cornea after AquaLase liquefaction cataract extraction显示文摘AIM: The most recent and innovative AquaLase liquefaction technology has offered an alternative to lens extraction.Many studies have investigated its functions and advantages.This article focuses on evaluating the in vivo microscopic cornea changes after AquaLase liquefaction by using a laser confocal microscope.METHODS: In this perspective,randomized case study,37 eyes of 35 patients submitted to cataract surgery were chosen to undergo AquaLase liquefaction cataract extraction.Each patient was assessed before the operation,on the 1st,7th,and 30th postoperative days,and 6 months after the cataract extraction.The morphologies and quantitative comparisons of corneal cells and corneal nerves layer by layer were evaluated in vivo with the Heidelberg Retina Tomograph III-Rostock Cornea Module (HRT-III RCM) confocal microscope.ANOVA and Post-Hoc Bonferroni test were carried out to compare the results preand post-operation.RESULTS: ANOVA results indicated no post-operation changes for epithelium and anterior stroma cells.Irregular segments of sub-basal nerve fiber were most pronounced seven days post-operation.In the mid and posterior stroma,keratocytes were obvious compared with the preoperative condition.Corneal endothelium cells became obviously swollen in cytoplasm and nucleus.The mid and posterior stroma cell density decreased from the 1st to 7th postoperative days (P <0.05).The corneal endothelium cell density decreased (P <0.05) and did not revert to the preoperative level after six months (P <0.05).CONCLUSION: Slight microstructural abnormalities were identified in the corneal recovery process after AquaLase liquefaction.AquaLase liquefaction cataract extraction is safe for cornea. | Jiang-Yue Zhao 1,Ming-Wu Wang 2,Qi Sun 1,Jin-Song Zhang 1 1 Eye Hospital of China Medical University Department of Ophthalmology,the Fourth Affiliated Hospital of China Medical University Provincial Key Laboratory of Lens Research,Liaoning,China 2 Department of Ophthalmology and Vision Science,the University of Arizona,Tucson,Arizona,USA | 2011 | International Journal of Ophthalmology(English edition)2011，4，3： | 2 |
| 4 | SOME RECENT PROGRESS IN STUDIES ON ACTIVE CONTROL OF WALL-JET FLOWS显示文摘Active control of wall his is important in both application and basic researches. In order to establish a solid background for the expected application,it is necessary to perform detailed studies on the base nows,on their stability characteristics and on the identification technique of coherent structures. This paper is a summarizing article rather than a detailed technical report, Its main purpose is just to introduce the recent progress in the related area. | Zhou Mingde.(Aerospace and Mechanical Engineering,The University of Arizona Tucson,Arizona 85721,USA) | 1994 | Transactions of Nanjing University of Aeronautics and Astronautics1994，11，2： | 1 |
| 5 | Obstetric emergencies and anesthetic management显示文摘 | Palmer C Tucson MD Arizona | 2008 | American Society ofAnesthesiologists Annual meeting refiesher course lecture2008，140，： | 1 |
| 6 | An Experimental Study on the Dynamic Characteristics of Cylinder Head Gaskets for Diesel Engine 显示文摘 | OSAMU Arizona TSUNEO Ulna MASAHITO Yakushijia | 2002 | JSAE Review2002，，23： | 1 |
| 7 | MODELING SEDIMENT PROCESSES ON SMALL WATERSHEDS:A CONCEPTUAL FRAMEWORK Ⅰ. BROAD SHALLOW FLOW PROCESSE显示文摘A conceptual modeling framework for developing process-based mathematical models of sediment generation, transport, and deposition on broad shallow flow areas is presented. The governing equations relevant to process-based modeling of broad shallow flow sediment processes on small watersheds are presented and the effects of space and time averaging on the predictive equations are described. Starting from the most general one-dimensional, unsteady model of sediment processes, simpler model structures are obtained and the successive simplifications made on the governing equations in order to obtain simpler and less detailed formulations are described. Specific model formulations are given for illustrative purposes and applications of these models to erosion and sediment yield prediction from broad shallow flow areas are shown using sediment data from rainfall simulator plots. In spite of some progress made in the development of process-based erosion and sediment yield models from broad shallow flow areas, further developmental modeling efforts must be based on a clear separation between hydrologic and hydraulic processes, and the soil properties which are significant for each. | Vicente L. LOPES Assistant Professor, School of Renewable Natural Resources, The University of Arizona, Tucson, Arizona, 85721 Peter F. FFOLLIOTT Professor, School of Renewable Natural Resources, The University of Arizona, 85721 | 1992 | International Journal of Sediment Research1992，7，3： | 1 |
| 8 | An experimental study on the dynamic characteristics of cylinder head gaskets for diesel engine 显示文摘 | Osamu Arizona Tsuneo Ulna Masahito Yakushijia | 2002 | JSAE Review2002，23，2： | 1 |
| 9 | The autophilic anti-CD20 antibody DXL625 displays enhanced potency due to lipid raft-dependent induction of apoptosis显示文摘 | I InNexus Biotechnology Inc Scottsdale Arizona | 2010 | Anticancer Drugs2010，21，5： | 1 |
| 10 | Changes of photosynthetic capacity of some plant species under very high CO_2 concentrations in Biosphere 2显示文摘THE responses of plant photosynthesis to elevated CO2 could be divided into short-term re-sponse and long-term response or acclimation.In the short-term response,photosynthesiscan be enhanced at the beginning of high CO2 treatment for most C3 carbon fixation species,but the photosynthetic rate may decrease when the plants are exposed to that high CO2 for | JIANG Gaoming and LIN Guanghui1. Ecological Research Center, Institute of Botany, Chinese Academy of Sciences, Beijing 100093, China 2. Biosphere 2 Research and Education Center, Columbia University, PO Box 689, Oracle, Arizona 85623, USA | 1997 | Chinese Science Bulletin1997，42，10： | 1 |
| 11 | Evaluation of the risk of instrumentation as a foreign body in spinal tuberculosis clinical and biological study显示文摘 | Oga M Arizona T Takasita M | 1993 | Spine1993，18，13： | 1 |
| 12 | Elastoplastie model with damage for strain soften geomaterials显示文摘 | FRANZISKONIS G DESAI C ARIZONA T | 1987 | Acta mech1987，68，3： | 1 |
| 13 | The link be- tween green purchasing decisions and measures of environmental Con- sciousness显示文摘 | SCHLEGEIMILCH B B ARIZONA G BOHLEN G M | 1996 | European Journal of Marketing1996，30，5： | 1 |
| 14 | Light Rail Transit Station Design and the Urban Landscape显示文摘 | Kathryn L Phoenix Arizona | 2001 | Contextual Infrastructure Planning and Design2001，，： | 1 |
| 15 | In the Remains of Theory:Ethical Criticism in Contemporary Literary Studies显示文摘伊格尔顿宣称我们现在生活在'后理论'时代。当代西方学界不乏有关理论的创新和局限的讨论。局限之一便是德里达、詹姆逊等理论家所代表的对伦理批评毫不掩饰的敌意。这种敌意有多种根源,其中最主要的根源就是理论对伦理批评的一种'误读':伦理学总是难逃规范性的、普适性的范畴,是依赖于二元对立的意识形态的面具,所以理论与伦理在精神上格格不入。于是,任何具有理论意识的文学研究都要拒绝指涉伦理学,从而造成在当代文学话语中伦理批评的十分引人注目的缺席。作者认为,现在有必要重新思考伦理批评的内涵以及它与理论本身的关系。如果我们将伦理批评看作是一个反思性的过程,如果我们承认文本总是价值的载体和媒介,承认价值的冲突和取舍可以启发人们如何生活,那么理论的所有门派如女性主义、后现代主义和文化批评等就已经蕴涵了伦理批评的成分,不管它们自己如何否认。据此而论,伦理批评并未真正缺席,它的声音仅仅为理论的爆炸声所暂时掩盖而已。 | LI Dian University of Arizona,USA | 2010 | Comparative Literature:East & West2010，，1： | 0 |
| 16 | 饮食补充Ai/E^(10)对健康人群自然杀伤细胞活性作用的研究显示文摘目的分析摄入Ai/E10的健康人群在一般情况下NK细胞活性变化(溶解单位,LU),同时评价他们对'症状评估'问卷回答的变化情况。方法通过对平均年龄为43岁的7名女性和5名男性进行90多天的监测,观察分析他们NK细胞活性的变化,及评价他们对'症状评估'问卷的回答。每个研究对象通过胶囊摄入100 mg Ai/E10(tid)。结果在摄入100 mg Ai/E10(tid)90多天后,研究对象NK细胞活性从(30±19)LU上升到(101±119)LU(P=0.001)。研究结束后,受试者'症状'的平均值较基线值显著降低(P=0.019)。受试者实验前一般健康'症状评估'平均值为(121±80)分,而实验后则降为(82±58)分,降低了32%,表明实验受试者使用Ai/E10与症状的降低有显著关联。结论本研究显示,口服Ai/E10能够显著增强NK细胞活性,减低各种症状的发生率,而不需要添加其他的营养成分、药物或改变生活方式。由于NK细胞活性与维持免疫系统的平衡有关,因此Ai/E10可能对人体的健康也有重要作用。 | Scottsdale Arizona | 2009 | 中华疾病控制杂志2009，13，6： | 0 |
| 17 | 东亚钳蝎:令人敬畏的生物显示文摘在我的家乡,蝎子晚上主要活跃于墙面或者墙根儿附近。以前很多被蛰的朋友都是因为在黑暗中摸了墙,或者光脚在墙根下走路玩耍。因此每年盛夏,家里的长辈们对孩子说得最多的告诫便是“晚上千万不要随便摸墙”。白天被蛰的朋友多是由于搬砖头造成的,这种情况遇到的都是小蝎子。我小时候仅仅被小蝎子蛰过一次。当时我在老家的院子里玩过家家,在捡地上的瓦片时,食指不幸被蜇到,那真是特别特别的疼。被蜇的位置虽然没有肿起像被马蜂蜇那样明显的包,但产生的疼痛感却远远超过被马蜂蜇,令我至今难忘。 | 马超(文/图) Arizona Tripsavvy(图) Mongabay(图) SCORPION(图) | 2020 | 人与自然2020，，12： | 0 |
| 18 | Application of a multilayer feedforward network to voiced-unvoiced-silence classifications of speech显示文摘A procedure has been developed for making voiced,unvoiced,and silence classifications of speech by using a multilayer feedforward net-work.Speech signals were analyzed sequentially and a feature vector wasobtained for each segment.The feature vector served as input to a3-layer feedforward network in which voiced,unvoiced,and silence classifi-cation was made.The network had a 6-12-3 node architecture and wastrained using the generalized delta rule for back propagation of error.The performance of the network was evaluated using speech samples from3 male and 3 female speakers.A speaker-dependent classification rate of94.7% and speaker-independent classification rate of 94.3% wereobtained.It is concluded that the voiced,unvoiced,and silence classifica-tion of speech can be effectively accomplished using a multilayerfeedforward network. | QI Yingyong(Department of Speech and Hearing Sciences, University of Arizona , Tucson . Arizona 85721) | 1992 | Chinese Journal of Acoustics1992，11，2： | 0 |
| 19 | MODELING SEDIMENT PROCESSES ON SMALL WATERSHEDS: A CONCEPTUAL FRAMEWORK Ⅱ. CONCENTRATED FLOW PROCESSES显示文摘A general modeling framework is presented for developing sediment process models by concentrated flow systems on small watersheds. A survey of fundamental principles for developing sediment process models is made with particular emphasis on the effects of space and time averaging on the governing equations. Starting from the most general one-dimensional. unsteady model of sediment processes, simpler model structures are obtained and the successive simplifications made on the governing equations in order to obtain simpler and less detailed formulations are described. Examples of computer implementations of the different approaches using specific formulations are given. Al-though some progress has been made in modeling sediment processes by concentrated flow on small watersheds. the development of improved modeling approaches should be based on better understanding of runoff mechanisms and sediment processes as functions of space and time scales over a wide range of climatic and land-use conditions. Identification and quantification of differences and similarities of watershed behavior remain important and active areas of experimental research on process-based sediment modeling. Future research priorities in the area of runoff and sediment process modeling must address the development of boundary conditions; model components (system complexity); the scales over which the equations are valid: and integration of the equations in space and time. | Vicente L. LOPES and Peter F. FFOLLIOTT Assistant Professor, School of Renewable Natural Resources, The University of Arizona. Tucson. Arizona. 85721 Professor, School of Renewable Natural Resources. The University of Arizona, Tucson. Arizona. 85721 | 1993 | International Journal of Sediment Research1993，8，1： | 0 |
| 20 | Nanometer scale patterning of ultrathin films with a scanning tunneling microscope in ambient environment显示文摘NanometerscalepatterningofultrathinfilmswithascanningtunnelingmicroscopeinambientenvironmentNanometerscalepatterningofultrath... | Xu Duan-yi Xu,Ling-song(TSINGHUA UNIVERSITY UNIVERSI7Y OF ARIZONA) | 1995 | 仪器仪表学报1995，16，S1： | 0 |
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