{"currentpage":1,"firstResult":0,"maxresult":10,"pagecode":5,"pageindex":{"endPagecode":5,"startPagecode":1},"records":[{"abstractinfo":"为了克服超声体积波测量方法只适用于测试厚度大于声波波长的弹性层的缺点,提出了频域相对传递函数法测量超薄弹性层的厚度的新方法.在推导超薄弹性层相对反射传递函数的基础上,用相对反射传递函数幅度谱、相位谱和复谱<span style=\"color:red\">定</span><span style=\"color:red\">征</span>超薄弹性的厚度,分析了影响估计准确性的各种因素,研究了相对反射传递函数对厚度的灵敏度函数在误差传递中的意义.实验结果表明:相对传递函数法能够测量厚度为波长百分之一的铝薄层的厚度,相对误差小于2.5%,其中用幅度谱<span style=\"color:red\">定</span>征得到的结果最准确.这表明相对传递函数法可以有效地测量超薄弹性层的厚度,在实际应用中更加实用,其<span style=\"color:red\">定</span><span style=\"color:red\">征</span>的准确性主要由相对传递函数对厚度灵敏度函数和测量误差共同决定.","authors":[{"authorName":"陈晓","id":"63b80bac-7b3c-4049-8222-52d108fb8e25","originalAuthorName":"陈晓"}],"doi":"","fpage":"817","id":"c1b375b3-a173-4226-9d4e-bf4398428660","issue":"6","journal":{"abbrevTitle":"CLKXYGY","coverImgSrc":"journal/img/cover/CLKXYGY.jpg","id":"14","issnPpub":"1005-0299","publisherId":"CLKXYGY","title":"材料科学与工艺"},"keywords":[{"id":"12720e4a-2cba-40c0-a316-b5e560693f0c","keyword":"超薄单层介质","originalKeyword":"超薄单层介质"},{"id":"4de09ae6-c7ff-4954-83cf-afb7e05e8fe5","keyword":"超声波","originalKeyword":"超声波"},{"id":"ffbf784d-58e3-4374-99e0-4eda80d6b83d","keyword":"相对传递函数","originalKeyword":"相对传递函数"},{"id":"db40c9ee-fe97-4934-92b3-de2208eb6972","keyword":"定量无损评价","originalKeyword":"定量无损评价"},{"id":"cde00cd3-ce94-4ff5-b0be-6417fa901e31","keyword":"<span style=\"color:red\">定</span><span style=\"color:red\">征</span>","originalKeyword":"定征"}],"language":"zh","publisherId":"clkxygy200806020","title":"超薄弹性层超声反射波频域测厚法","volume":"16","year":"2008"},{"abstractinfo":"本文提出低频超声类瑞利波<span style=\"color:red\">定</span><span style=\"color:red\">征</span>方法来估计覆层/基层层状复合结构超薄覆层的纵波声速、横波声速、厚度和密度等参数.这里\"超薄\"的概念是指覆层厚度h远小于覆层中的声波波长λ,导致在时域上覆层前后界面的各次回波信号相互混迭.文章采用水楔耦合方式,利用超声漏类瑞利波频域分析方法获取层状复合结构超声类瑞利波色散曲线,提出以色散特性为基础的低频超声类瑞利波覆层<span style=\"color:red\">定</span><span style=\"color:red\">征</span>方法和在最小二乘意义下以色散曲线为基础的反向算法对覆层进行了参数估计.文中分析了影响估计准确性的各种因素,研究了低频超声类瑞利波<span style=\"color:red\">定</span><span style=\"color:red\">征</span>方法对覆层各参数的灵敏度及其在误差传递中的意义.实验结果证实,对于银箔/玻璃层状复合结构,该方法能够准确估计厚度小到26μm银箔覆层的声学参数.","authors":[{"authorName":"张锐","id":"00d7e280-e393-4208-acec-79d55556a2b2","originalAuthorName":"张锐"},{"authorName":"万明习","id":"6ac97513-f80b-40fe-b40f-c33c70fcaa05","originalAuthorName":"万明习"},{"authorName":"李刚","id":"26f5983d-15f9-4aca-8655-ee307651256d","originalAuthorName":"李刚"},{"authorName":"","id":"e2621af4-69f0-4b3d-a79d-521c1e496b1d","originalAuthorName":""}],"doi":"10.3969/j.issn.1673-2812.2000.01.004","fpage":"19","id":"94454ffa-81b5-45ab-844e-86ef0aedca38","issue":"1","journal":{"abbrevTitle":"CLKXYGCXB","coverImgSrc":"journal/img/cover/CLKXYGCXB.jpg","id":"13","issnPpub":"1673-2812","publisherId":"CLKXYGCXB","title":"材料科学与工程学报"},"keywords":[{"id":"946461a5-97e6-49dc-b36a-7f4c489891e5","keyword":"复合结构","originalKeyword":"复合结构"},{"id":"958ae116-f7cd-41cf-8852-f6627cc2336d","keyword":"超声定量无损<span style=\"color:red\">定</span><span style=\"color:red\">征</span>","originalKeyword":"超声定量无损定征"},{"id":"7db5b152-8527-4d55-a8d4-e301ce81f50b","keyword":"超声类瑞利波","originalKeyword":"超声类瑞利波"},{"id":"4698c3ec-90c8-4c93-9312-a824649c38aa","keyword":"超薄覆盖层","originalKeyword":"超薄覆盖层"}],"language":"zh","publisherId":"clkxygc200001004","title":"超薄覆层低频超声类瑞利波<span style=\"color:red\">定</span><span style=\"color:red\">征</span>方法","volume":"18","year":"2000"},{"abstractinfo":"提出低频多模式超声兰姆波<span style=\"color:red\">定</span><span style=\"color:red\">征</span>方法来估计超薄层状单向纤维增强复合材料的密度、厚度、弹性常数等参数。这里“超薄”的概念是指材料厚度h远小于材料中的声波波长λ，导致在时域上材料前后界面的各次回波信号相互混迭。分析了沿平行和垂直于纤维两个方向上，在超薄层状单向纤维增强复合材料中传播的低频兰姆波色散特性，提出在最小二乘意义下以材料色散曲线为基础的反向算法对材料参数进行了估计。文中分析了影响估计准确性的各种因素，研究了该方法对材料参数的灵敏度及其在误差传递中的意义。结合超声漏兰姆波频域分析方法，并使用超声耦合剂耦合方式和一对中心频率为2MHz的宽带纵波换能器，实验结果证实，该方法能够准确估计h<0.05 λ的单向玻璃纤维增强双酚A型聚砜（PSF）复合材料的材料参数。","authors":[{"authorName":"张锐","id":"df2176ae-2d4b-439a-b118-08e7542ff67f","originalAuthorName":"张锐"},{"authorName":"万明习","id":"89ba38ee-2a76-494f-9512-95466763b9bb","originalAuthorName":"万明习"},{"authorName":"陈晓","id":"37ca698c-602f-4c35-8f01-98a41718a77e","originalAuthorName":"陈晓"},{"authorName":"Cao Wen-wu","id":"7db4da25-3694-4e6b-bafc-1c004767d1a0","originalAuthorName":"Cao Wen-wu"}],"doi":"10.3321/j.issn:1000-3851.2001.01.005","fpage":"20","id":"2df910df-00a3-43d8-80ba-22297988585f","issue":"1","journal":{"abbrevTitle":"FHCLXB","coverImgSrc":"journal/img/cover/FHCLXB.jpg","id":"26","issnPpub":"1000-3851","publisherId":"FHCLXB","title":"复合材料学报"},"keywords":[{"id":"cbc78f6f-ce3c-428f-a9d0-b18a2437d59d","keyword":"复合材料","originalKeyword":"复合材料"},{"id":"173d90ea-93a0-4e5e-b497-c56f4c946e32","keyword":"超声兰姆波","originalKeyword":"超声兰姆波"},{"id":"2169fecc-1267-4514-9806-c02b1058ba60","keyword":"定量无损<span style=\"color:red\">定</span><span style=\"color:red\">征</span>","originalKeyword":"定量无损定征"},{"id":"9b034f3b-f52d-4433-849a-1399fd9e00c3","keyword":"色散特性","originalKeyword":"色散特性"}],"language":"zh","publisherId":"fhclxb200101005","title":"超薄单向纤维增强复合材料低频多模式超声兰姆波<span style=\"color:red\">定</span><span style=\"color:red\">征</span>方法","volume":"18","year":"2001"},{"abstractinfo":"负折射介质自从被实验实现起就因其所具有的新奇特性而引起了广泛的关注和研究.综述了通过手<span style=\"color:red\">征</span>方法实现负折射的研究进展,通过对手<span style=\"color:red\">征</span>负折射理论、手<span style=\"color:red\">征</span>结构的模拟计算和实验研究的概述,显示了用手<span style=\"color:red\">征</span>方法实现负折射的特点和优势,展现了该方法的潜在应用前景.","authors":[{"authorName":"董建峰","id":"4c6a2128-127e-44cb-85a5-affcbcc002b2","originalAuthorName":"董建峰"},{"authorName":"徐超","id":"6d8c26dd-68a6-477a-ba48-fc79b0224cf8","originalAuthorName":"徐超"},{"authorName":"徐键","id":"b7b45f73-e984-48ac-bc66-5277dae9fa35","originalAuthorName":"徐键"}],"doi":"10.3969/j.issn.1007-5461.2009.04.001","fpage":"385","id":"35148516-04f3-40aa-aa8a-c765a349afff","issue":"4","journal":{"abbrevTitle":"LZDZXB","coverImgSrc":"journal/img/cover/LZDZXB.jpg","id":"53","issnPpub":"1007-5461","publisherId":"LZDZXB","title":"量子电子学报   "},"keywords":[{"id":"d3ae14e3-e1cf-4f07-871e-d89420f14ed5","keyword":"光电子学","originalKeyword":"光电子学"},{"id":"4c6ce14e-45e6-466a-bb49-7b34ac2f51de","keyword":"负折射","originalKeyword":"负折射"},{"id":"4c89d718-2f38-46cc-b5cd-4f5e9c3862c6","keyword":"手<span style=\"color:red\">征</span>性","originalKeyword":"手征性"},{"id":"2a96d881-c8ca-47cc-853c-cdd6e2acdd86","keyword":"完美透镜","originalKeyword":"完美透镜"},{"id":"f22fe2a8-30ec-4fe0-b456-3ff62917727a","keyword":"旋光性","originalKeyword":"旋光性"}],"language":"zh","publisherId":"lzdzxb200904001","title":"手<span style=\"color:red\">征</span>负折射研究进展","volume":"26","year":"2009"},{"abstractinfo":"手<span style=\"color:red\">征</span>微扰论是基于量子色动力学的低能有效理论, 已成为核物理和低能粒子物理研究的有力方法. 简单介绍了手<span style=\"color:red\">征</span>微扰论的基本概念、方法和应用, 特别是近年来重子手<span style=\"color:red\">征</span>微扰论的形式发展和一些应用中的前沿问题. ","authors":[{"authorName":"张小兵","id":"b9f94d3d-7e01-488e-aa96-fbeeeef5596f","originalAuthorName":"张小兵"},{"authorName":"李磊","id":"771317b1-dab0-4981-bc8a-8f5a0adf28a3","originalAuthorName":"李磊"},{"authorName":"宁平治","id":"3d2fa7d4-0b73-4305-8839-efec05df056c","originalAuthorName":"宁平治"}],"doi":"10.3969/j.issn.1007-4627.2002.01.005","fpage":"24","id":"caa0fee1-3c3d-427f-8d27-3a67235a5e39","issue":"1","journal":{"abbrevTitle":"YZHWLPL","coverImgSrc":"journal/img/cover/YZHWLPL.jpg","id":"78","issnPpub":"1007-4627","publisherId":"YZHWLPL","title":"原子核物理评论   "},"keywords":[{"id":"f0db7c99-935a-414a-b135-eae8ca62c4bc","keyword":"手<span style=\"color:red\">征</span>微扰论","originalKeyword":"手征微扰论"},{"id":"f846e835-2157-4d2c-a910-72b79e8d6684","keyword":"手<span style=\"color:red\">征</span>对称性","originalKeyword":"手征对称性"},{"id":"7db9573a-30c0-45ee-a09d-956eb72c36da","keyword":"有效场论","originalKeyword":"有效场论"}],"language":"zh","publisherId":"yzhwlpl200201005","title":"核物理中的手<span style=\"color:red\">征</span>微扰论","volume":"19","year":"2002"},{"abstractinfo":"聚苯胺对金属防腐蚀有较好的效果,本<span style=\"color:red\">征</span>态聚苯胺对金属的防腐蚀性目前研究较少.采用化学氧化法合成了本<span style=\"color:red\">征</span>态聚苯胺(EB),以动电位扫描法研究了不同介质溶液中EB对45钢的腐蚀防护性能.XRD图谱分析表明,所合成的EB具有一<span style=\"color:red\">定</span>的结晶性,在2θ=19.18°处有一很强的衍射峰,在2θ=24.4°处出现了一较弱的衍射峰.极化曲线表明,涂覆有本<span style=\"color:red\">征</span>态聚苯胺的45钢的腐蚀电流减小,腐蚀速度降低;EB对45钢有一<span style=\"color:red\">定</span>的防腐蚀作用.","authors":[{"authorName":"任乃媛","id":"dce91e0a-a19e-48a6-b1fd-e3c7a77d2747","originalAuthorName":"任乃媛"},{"authorName":"王保成","id":"55f316f0-5d57-4835-a4e5-b1171021c51d","originalAuthorName":"王保成"}],"doi":"10.3969/j.issn.1001-1560.2006.02.002","fpage":"4","id":"be447d63-11d1-48de-951b-85e36131549d","issue":"2","journal":{"abbrevTitle":"CLBH","coverImgSrc":"journal/img/cover/CLBH.jpg","id":"7","issnPpub":"1001-1560","publisherId":"CLBH","title":"材料保护"},"keywords":[{"id":"1c330254-3e3e-42b8-b628-d0ef51b184b5","keyword":"腐蚀防护","originalKeyword":"腐蚀防护"},{"id":"7b04a1c0-cb32-44aa-8ffe-de8b2c5069da","keyword":"本<span style=\"color:red\">征</span>态聚苯胺","originalKeyword":"本征态聚苯胺"},{"id":"6f208caa-d4b0-4f6a-9f5c-9cf29000d0f6","keyword":"涂层","originalKeyword":"涂层"},{"id":"44be8ff9-d528-4c1a-8481-41441cfa07ce","keyword":"45钢","originalKeyword":"45钢"}],"language":"zh","publisherId":"clbh200602002","title":"本<span style=\"color:red\">征</span>态聚苯胺对45钢的腐蚀防护性能","volume":"39","year":"2006"},{"abstractinfo":"基于传统的mesa结构制备工艺,我们通过精确控制实验参数的手段,在Bi2Sr2CaCu2O8+x单晶上实现了仅含有少数几个结的本<span style=\"color:red\">征</span>结的制备工艺,结的临界电流具有很好的一致性.结的数目最少达到2个(包括表面结);结数目控制误差为±1个.","authors":[{"authorName":"尤立星","id":"70d5b02c-e2d2-45c6-94c0-b05bde619860","originalAuthorName":"尤立星"},{"authorName":"吴培亨","id":"00fabaad-9978-4874-bd2e-a6ab464277ce","originalAuthorName":"吴培亨"},{"authorName":"吉争鸣","id":"28d96c5f-6ee0-412a-a2e9-a3f39a7014ab","originalAuthorName":"吉争鸣"},{"authorName":"范世雄","id":"66f12d0c-fcb4-422b-b4c8-b2fa9d985233","originalAuthorName":"范世雄"},{"authorName":"许伟伟","id":"f6f47103-bfcf-4bd9-be43-9aede5297869","originalAuthorName":"许伟伟"},{"authorName":"蔡卫星","id":"d672fbf1-fbb2-4e15-95d9-9628e087bfdc","originalAuthorName":"蔡卫星"},{"authorName":"康琳","id":"bf894b3f-cc39-4566-9fcb-e69eb42b0089","originalAuthorName":"康琳"},{"authorName":"","id":"5d93386c-3c41-4d52-b5ae-fe3147242f16","originalAuthorName":""}],"doi":"10.3969/j.issn.1000-3258.2003.03.008","fpage":"198","id":"4ae9bd41-c461-4cb3-981a-6fd0fb5dfb64","issue":"3","journal":{"abbrevTitle":"DWWLXB","coverImgSrc":"journal/img/cover/DWWLXB.jpg","id":"19","issnPpub":"1000-3258","publisherId":"DWWLXB","title":"低温物理学报   "},"keywords":[{"id":"85ca9dcd-4683-474b-8071-36fe4e46e8c0","keyword":"高温超导","originalKeyword":"高温超导"},{"id":"6d78f1c9-6a45-4e75-b6ab-279b130f038b","keyword":"本<span style=\"color:red\">征</span>约瑟夫逊结","originalKeyword":"本征约瑟夫逊结"}],"language":"zh","publisherId":"dwwlxb200303008","title":"可控数目本<span style=\"color:red\">征</span>结的制备","volume":"25","year":"2003"},{"abstractinfo":"为了加强本<span style=\"color:red\">征</span>约瑟夫逊结(简称本<span style=\"color:red\">征</span>结)与高频电磁波信号的耦合,我们通过平面工艺手段获得了厚度小于伦敦穿透深度的超薄单晶基底,其厚度小于150nm.并在此基底上利用传统的mesa结构制备工艺制备了本<span style=\"color:red\">征</span>结.所制备的本<span style=\"color:red\">征</span>结超导性能没有发生明显的退化,与常规本<span style=\"color:red\">征</span>结的特性基本一致.","authors":[{"authorName":"闫生超","id":"d6805e27-b0de-46ed-8098-e094bd6a4d42","originalAuthorName":"闫生超"},{"authorName":"尤立星","id":"1256dd98-bc65-40b6-ba87-1c95b0686c58","originalAuthorName":"尤立星"},{"authorName":"陈健","id":"efffecf5-0e78-44c4-bf41-c4e292b0fd2f","originalAuthorName":"陈健"},{"authorName":"吴培亨","id":"f3b4f549-5cff-460b-8d8f-97917668a857","originalAuthorName":"吴培亨"}],"doi":"10.3969/j.issn.1000-3258.2004.04.011","fpage":"330","id":"515c8473-7d98-480c-8921-985c357bb198","issue":"4","journal":{"abbrevTitle":"DWWLXB","coverImgSrc":"journal/img/cover/DWWLXB.jpg","id":"19","issnPpub":"1000-3258","publisherId":"DWWLXB","title":"低温物理学报   "},"keywords":[{"id":"6d0c6f4b-9aae-4e82-81cd-eccf95ed3872","keyword":"高温超导","originalKeyword":"高温超导"},{"id":"34e8cb59-30df-479b-b33d-3ac5fff58fd3","keyword":"本<span style=\"color:red\">征</span>约瑟夫逊结","originalKeyword":"本征约瑟夫逊结"},{"id":"0c07a51e-4c0e-4aa6-8797-cfac0fc67d29","keyword":"超薄单晶基底","originalKeyword":"超薄单晶基底"}],"language":"zh","publisherId":"dwwlxb200404011","title":"超薄单晶基底本<span style=\"color:red\">征</span>约瑟夫逊结的制备","volume":"26","year":"2004"},{"abstractinfo":"对放置于手<span style=\"color:red\">征</span>介质中的两根平行手<span style=\"color:red\">征</span>光纤之间的耦合系数 进行了详细的数值计算和讨论，给出了耦合系数随手<span style=\"color:red\">征</span>参数、相对介 电常数、归一化频率、光纤之间的距离等的变化关系曲线。","authors":[{"authorName":"董建峰","id":"3f1b6728-9b39-4e02-bb38-ad927c1ab36f","originalAuthorName":"董建峰"},{"authorName":"陶卫东","id":"a7c8569d-1e86-478c-9e59-9b46b5344726","originalAuthorName":"陶卫东"}],"doi":"10.3969/j.issn.1007-5461.2000.01.003","fpage":"11","id":"3f97a08c-621d-4546-8bec-c8a568d34c2f","issue":"1","journal":{"abbrevTitle":"LZDZXB","coverImgSrc":"journal/img/cover/LZDZXB.jpg","id":"53","issnPpub":"1007-5461","publisherId":"LZDZXB","title":"量子电子学报   "},"keywords":[{"id":"c03d08f5-3bee-482e-9783-80c40094a53d","keyword":"手<span style=\"color:red\">征</span>参数","originalKeyword":"手征参数"},{"id":"0a7c85bc-68b2-43ab-aadf-7c7e16d721b1","keyword":"手<span style=\"color:red\">征</span>光纤","originalKeyword":"手征光纤"},{"id":"0b3827f2-ce2c-4773-9ab8-e0b732462a92","keyword":"耦合系数","originalKeyword":"耦合系数"}],"language":"zh","publisherId":"lzdzxb200001003","title":"平行手<span style=\"color:red\">征</span>光纤之间的耦合系数","volume":"17","year":"2000"},{"abstractinfo":"采用手<span style=\"color:red\">征</span>σ模型描述核多体系统,考虑真空极化的影响,首先由核物质的饱和性质确定模型参数,进一步研究了强子性质在核介质中的变化.手<span style=\"color:red\">征</span>σ模型的研究结果给出,核子和ω介子的有效质量随核物质密度的增大而减小,但σ介子的有效质量随密度的增大而增大.这些结果与不满足手<span style=\"color:red\">征</span>对称性的Walecka模型结果进行了比较.计算中采用的重整化方法会对结果有一<span style=\"color:red\">定</span>的影响.","authors":[{"authorName":"申虹","id":"5c734736-5a7b-45f6-bfa4-16e1481becb2","originalAuthorName":"申虹"}],"doi":"10.3969/j.issn.1007-4627.2005.04.017","fpage":"376","id":"72716a88-f9b0-45d4-ba37-8a9b9ce21f5a","issue":"4","journal":{"abbrevTitle":"YZHWLPL","coverImgSrc":"journal/img/cover/YZHWLPL.jpg","id":"78","issnPpub":"1007-4627","publisherId":"YZHWLPL","title":"原子核物理评论   "},"keywords":[{"id":"011fea1c-3fd1-4d6f-86c5-38f0eb7b5a8a","keyword":"手<span style=\"color:red\">征</span>σ模型","originalKeyword":"手征σ模型"},{"id":"7336c433-713d-4ff8-bc17-2286b360e753","keyword":"强子有效质量","originalKeyword":"强子有效质量"},{"id":"8668d9bd-bc29-429e-96cf-488ff6584df2","keyword":"重整化方法","originalKeyword":"重整化方法"}],"language":"zh","publisherId":"yzhwlpl200504017","title":"核介质中强子性质的手<span style=\"color:red\">征</span>σ模型研究","volume":"22","year":"2005"}],"totalpage":1219,"totalrecord":12185}