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14篇 您的检索式:作者名="D.Martin"
    题名 作者 年代 出处 被引量
1级配对排水沥青路面抗堵塞能力的影响研究显示文摘为研究级配与排水沥青混合料抗堵塞能力之间的关系,采用美国常用的10种OGFC级配成型试件并采用变水头渗水仪进行渗水试验,以粒径0.15~0.3 mm的细砂作为堵塞材料进行逐次堵塞后的渗水试验,建立了表征级配粗细的级配参数R15和堵塞前后不同试件的渗水系数(k)、初始堵塞率(CR初始)、二次堵塞率(CR二次)之间的相关关系,对排水沥青混合料的抗堵塞能力进行了研究。结果表明:排水沥青混合料级配的粗细对其堵塞前后的渗水系数有着显著的影响;清除堵塞后的渗水系数可恢复到初始渗水系数的69%;CR初始较小时,CR二次大于CR初始的一半,CR初始较大时,CR二次小于CR初始的一半;可以用R15来估计不同时刻的渗水系数和二次堵塞率。朱旭伟 李波 魏定邦 李昊(编译) William D.Martin Bradley J.Putman ANDrew I.Neptune 2020中外公路2020,40,3:6
2Tourists' characteristics and the perceived image of tourist destinations:a quantitative analysis-a case study of Lanzarote,Spain显示文摘Asuncion Beerli Josefa D.Martin 0,,01:1
3Effect of oral creatine supplementation on isokinetic torque production显示文摘Gilliam J.D C.Hohzorn D.Martin 0,,05:1
4查看详情显示文摘D.Martin D.Moraleda T.Achard 0,,:1
5Boundary element hyper‐singular formulation for elastoplastic contact problems显示文摘M. H.Aliabadi D.Martin 2000Engng2000,,7:1
6Do strategic alliances create value显示文摘Su Han Chan John W.Keminger Arthur J.Keown John D.Martin 0,,02:1
7Analysis of variograms with various sample sizes from a multispectral image显示文摘Variogram plays a crucial role in remote sensing application and geostatistics.It is very important to estimate variogram reliably from sufficient data.In this study,the analysis of variograms computed on various sample sizes of remotely sensed data was conducted.A 100×100-pixel subset was chosen randomly from an aerial multispectral image which contains three wavebands,Green,Red and near-infrared(NIR).Green,Red,NIR and Normalized Difference Vegetation Index(NDVI)datasets were imported into R software for spatial analysis.Variograms of these four full image datasets and sub-samples with simple random sampling method were investigated.In this case,half size of the subset image data was enough to reliably estimate the variograms for NIR and Red wavebands.To map the variation on NDVI within the weed field,ground sampling interval should be smaller than 12 m.The information will be particularly important for Kriging and also give a good guide of field sampling on the weed field in the future study.Huihui Zhang Yubin Lan Ronald E.Lacey Yanbo Huang W.Clint Hoffmann D.Martin G.C.Bora 2009International Journal of Agricultural and Biological Engineering2009,2,4:1
8The Fe-Si-B ternary amorphous alloys显示文摘F.Luborsky J.Becker J.Walter D.Martin 0,,:1
9全北区古近纪的鸟类动物群显示文摘中国的较高纬度地区有着丰富且交通无阻的含化石地层,故在全北区生物地理的研究中占有独特的位置。它提供了欧洲和北美新生代早期沉积之间的联系。这些动物群中所含丰富多样的鸟类动物群,直到目前才得到足够的关注。早始新世时,在全球范围内,甚至在高纬度地区,都遍布着热带森林;在怀俄明州的绿河湖区,还发现了棕榈叶的化石。因而,德国Messel的鸟类动物群表现出与非洲热带森林较近的亲缘关系,怀俄明州绿河的鸟类动物群与南美洲热带地区关系密切,也就不足为奇了。实际上,古近纪的标志性特征是温暖潮湿的生态系统在全球广泛分布,削弱了高纬度地区对生物分布所起的屏障作用。晚始新世-渐新世全球温度的下降,致使新近纪加剧了大陆隔离并促成了生态变化,进而导致了现代鸟类在分类上的多样性。Larry D.MARTIN 2010古脊椎动物学报2010,48,4:0
10纺织配色专家系统——Smart Match显示文摘一、引言 配色处方计算质量的好坏主要取决于描述反射、吸收和散射之间关系的算法的有效性。大多数配色计算都采用库贝尔卡—芒克(Kubel-ka-Munk)理论和Beer定律。但是,实际使用的染料、染色工艺以及纺织品的性能却只能部分满足这些理论所要求的边界条件。因此,一次配色的小误差成功率通常只有30—80%。为了有效地提高一次配色的质量,Datacolor Inter-national公司推出了一种新的计算方法,该方法命名为“Smart Match”。这种软件除了传统配色计算之外,还包括能在第一次染色前就消除因实际情况与理论条件不一致而引起的偏差的校正算法。有了这种校正算法。D.Martin 胡石羽 1996国外纺织技术(化纤.染整.环境保护分册)1996,,5:0
11数字电路故障探寻与技巧显示文摘当你寻找一个逻辑电路的故障时,正如在你维修一台个人汁算机时可以那样做一样,你可能碰到不惜全力去解决的情况。例如,如果一个逻辑门(与门、或门等)内部短路,连接短路门的电路迹线(在这里称做一个“节点”,因为许多元怍可能与它相连)将通过这个短路电路连接到地。或者换句话说,电路“被堵塞了”。向这种情况中的技术人员的挑战是决定连到该节点的许多器件中的哪一个实际上是有故障的。Vaughn D.Martin 陈玉生(译) 1993现代电视技术1993,,4:0
12强对流岩浆房中晶体的沉淀D.Martin R.Nokes 郭孝明 1990地球与环境1990,31,1:0
13克莱斯勒Pacifica车型的eFlite混合动力专用变速器显示文摘在全球燃料消耗和CO2排放限制的背景下,电驱动力总成系统将发挥越来越重要的作用。为此,美国菲亚特-克莱斯勒汽车公司开发了其首台混合动力专用变速器(eFlite变速器),并应用于克莱斯勒Pacifica混合动力车型上。该eFlite混合动力专用变速器平台对整车性能、燃油经济性、整机质量、布置及振动-噪声-平顺性(NVH)性能进行优化。该变速器采用电动可变前驱驱动桥结构、带动力分离装置以及2个电机。在纯电动模式下2个电机均可用作驱动电机。润滑和冷却系统采用2个机油泵、1个电子泵和1个机械泵。克莱斯勒Pacifica混合动力车同时配备1个16kW·h的锂电池和1台3.6L的Pentastar发动机,额定功率260PS1,油耗84mile/gal,纯电动模式下的续航里程为33mile,总续航里程可达566mile。M.PITTEL D.MARTIN 肖翔(译) 2019汽车与新动力2019,2,6:0
14Institutional analysis of intra-and post-operative tracheostomy management for risk reduction显示文摘Objectives:Determine variability in intra-and post-operative management of tracheostomies(trachs)at our institution as existing literature suggests that trachs are a frequent trigger for airway-related emergencies.Catalyze the development of an institution-wide protocols for trach care.Methods:A 39-question online survey was sent to 55 providers who perform open and percutaneous trachs at three of the hospitals within our large,urban,academic medical center.These providers were identified by surveillance of the operating room schedules for 1 year.Results:The survey was completed by 40 of the 53 eligible providers(75.5%).Response rate by question varied.Respondents included members of all departments that perform trachs at our institution(Otorhinolaryngology,Trauma Surgery,Thoracic Surgery,General Surgery,Cardiovascular Surgery and Interventional Pulmonology).While most responses demonstrated uniformity in practice,notable variations included the following:80%of percutaneous trach providers stated that morbid obesity was not a contraindication to performing a trach outside of the operating room(n=20)while 58%of open trach providers stated that morbid obesity was a contraindication;only 35%of open trach providers perform a Bjork flap(n=350).The survey also identified significant variability in practice with regards to timing of trach suture removal.Discussion:Lack of uniformity was identified in several practices related to intra-and post-operative tracheostomy care.Results did,however,trend toward consensus in many areas.The results are being used to establish a more consistent approach to tracheostomy management across our institution to ensure standardization of practice amidst the rapidly evolving practices of trach placement.Implications for practice:With ongoing evolution in the methods of trach placement and its management,the concepts put forth here will be a resource for health care providers at other institutions to consider intra-institutional analysis and establishment of practice standardization.Laura E.Henry Ellen A.Paul Joshua H.Atkins Niels D.Martin Ara A.Chalian Christopher H.Rassekh 2022World Journal of Otorhinolaryngology-Head and Neck Surgery2022,8,4:0
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