Results 91 to 100 of about 34,334 (249)
Zhongguo shiyan zhenduanxue, 2015 目的分析呼吸道分离鲍曼不动杆菌生物被膜形成能力与耐药性之间的关系。方法采用K-B法测定鲍曼不动杆菌对14种抗菌药物的敏感性,用改良微量板法检测菌株生物被膜形成时间及能力。结果呼吸道分离的鲍曼不动杆菌耐药形势严峻。53.93%的鲍曼不动杆菌可形成生物被膜,生物被膜形成阴性株对多数抗生素的耐药率高于生物被膜形成阳性株。结论呼吸道分离的鲍曼不动杆菌生物被膜形成能力与耐药性呈负相关。
刘原 +7 more
doaj
Design and Implementation of Assistant Decision System for Fire Control Based on Wireless Image Transmission [PDF]
, 2016 随着无线图像传输技术的迅猛发展，人们对获取视频、图片的时效性要求越来越高，无线图像传输已经成为网络化信息技术发展的趋势，无线图像传输技术在社会各个行业都有广泛的应用。在救援难度大、建筑物内部复杂的单位、特殊化危品处置、跨区域联合作战中，依靠无线对讲机和车载台是做不到视频图像传输的。为了能适应今后的消防部队作战指挥的多元化发展，灾害事故的多样化和复杂化，消防部队扑救各类火灾和事故救援的难度加大的状况，奋战在一线消防的官兵迫切需要提供一种可以直接把火灾扑救现场和抢险救援现场画面实时传输出去 ...
杨娜
core
Hybridity of mainly asexually propagating duckweeds in genus Lemna – dead end or breakthrough?
New Phytologist, Volume 250, Issue 1, Page 629-647, April 2026.Summary The cosmopolitan, mainly vegetatively propagating, organ‐reduced monocotyledonous aquatic duckweeds are the smallest and fastest growing angiosperms, distributed world‐wide and flower rarely in nature. Recently, we reported intra‐ and interspecific hybrids and ploidy variants in the genus Lemna.
Yuri Lee +10 more
wiley +1 more source
Gaoya dianqi, 1999 概述了利用分形学（Fractals）研究绝缘介质击穿机理的模型及利用计算机对树枝放电进行模拟的基本原理.结合分形学,给出了计算放电树枝分形维数的几种常用方法.
陈庆国, 邱毓昌, 魏新劳
doaj
Ecological predictors of plant responses to sequential herbivory: a meta‐analysis
New Phytologist, Volume 250, Issue 2, Page 1128-1140, April 2026.Summary Plants evolved alongside herbivores for over 400 million years and show remarkable plasticity in responses to attack by multiple herbivores. However, it is often debated which herbivore traits predict plant responses and it is poorly understood how plant life‐history traits contribute to the variation observed in plant responses.
Zoë Delamore +2 more
wiley +1 more source
Shuitu Baochi Xuebao, 2008 实现具有三维立体特征的流域地貌分形维数直接准确计算,是目前分形地貌学研究所面临的主要问题之一。依据变分法求解三维表面分形维数的基本原理,以DEM栅格数据为基础,利用ArcGIS9.2中的窗口分析功能,对所建立的小流域模型不同发育阶段的三维地貌闵可夫斯基维数进行研究。结果表明,变分法和GIS的有机结合使三维地貌分形维数的直接计算成为可能,小流域模型不同发育阶段的三维地貌在各自无标度区内呈显著的分形特征,三维地貌闵可夫斯基维数不仅能有效表达小流域模型不同发育阶段地貌的差异性(变化范围达0.452 ...
王民, 李占斌, 崔灵周, 李鹏
doaj
Dispersive Behaviour of Dual-Petrov-Galerkin Methods for the One-way Wave Equation Comparing with High Order Finite Element Schemes [PDF]
, 2016 MarkAinsworth(2014)曾针对单向流方程，利用高阶有限元方法构造离散波，考察它对于同速情况下的物理波的估计效果。文章不仅给出了详细的分析过程，更是得到了估计相应Floquet因子的相对误差的显性表达式，同时，将其与间断Galerkin方法下的相对误差结果进行了对比。然而，事实证明，无论是高阶有限元方法，还是间断Galerkin方法，它们的估计效果都是具有奇偶特性的。即是说，在多项式阶数为奇数和为偶数时，Floquet因子的相对误差具有不同的表达式，进一步来说，当多项式阶数不断增大时 ...
居文瑜
core
Fruit respiration: putting alternative pathways into perspective
New Phytologist, Volume 250, Issue 1, Page 54-73, April 2026.Summary Over the past century, research has significantly advanced our understanding of fruit respiration, from (eco)physiological processes to molecular mechanisms. This review focuses on the functional relevance and regulatory roles of mitochondrial alternative respiratory pathways (ARPs) during fruit growth and ripening.
Ariadna Iglesias‐Sanchez +4 more
wiley +1 more source
Gaoya dianqi, 1983 作者采用了有限元素法,就500千伏SF6绝缘设备的锥形及盘形绝缘子的电场分布进行了计算和分析,弄清了绝缘子的形状,倾角、厚度、屏蔽体的形状等因素对电场分布的影响,取得了三个较为满意的绝缘子设计方案。
姚抚城, 黎明
doaj
Rhizobial motility preference in root colonization of Medicago truncatula
New Phytologist, Volume 250, Issue 1, Page 547-562, April 2026.Summary Tunnel‐like infection thread (IT) structures support root colonization by symbiotic nitrogen‐fixing rhizobia bacteria in most legume species. These tip‐grown structures are key to directing rhizobia from root hairs to developing nodules, where they are hosted to fix nitrogen.
Anaïs Delers +11 more
wiley +1 more source