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3039篇 您的检索式:作者名="DINGS P"
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1On the Application of PCA Technique to Fault Diagnosis显示文摘In this paper, we briefly address the application of the standard principal component analysis (PCA) technique to fault detection and identification. Based on an analysis of the existing test statistic, we propose a new test statistic, which is similar to the Hawkin’s TH 2 statistic but without the numerical drawback. In comparison with the SPE index, the threshold setting associated with the new statistic is computationally simpler. Our further study is dedicated to the analysis of fault sensitivity. We consider the off-set and scaling faults, and evaluate the test statistic by viewing its sensitivity to the faults. Our final study focuses on identifying off-set and scaling faults. To this end, two algorithms are proposed. This paper also includes some critical remarks on the application of the PCA technique to fault diagnosis.DING S ZHANG P DING E YIN S Naik A DENG P GUI W 2010Tsinghua Science and Technology2010,15,2:31
2Subclinical atherosclerosis in northern and southern China: the Chinese paradox显示文摘背景冠的心疾病(CHD ) 的发生是更高的在北比在南部的中国,然而,在传统的 CHD 的差别冒险的,解释这。没有学习在可以帮助在发生解释差别的无临床症状的动脉粥样硬化检验了差别。这研究为在北、南部的中国之间的石灰化用冠的计算断层摄影术(CT ) 在无临床症状的动脉粥样硬化检验了这些差别。我们在一个大多中心选择了参加者的一件随机的样品的方法为冠的钙在一个北城市(诺思) 里扫描的进行中的流行病的学习(北京, n = 49 ) 并且在二个南部的城市(南方) 里(上海, n = 50,并且广州, n = 50 ) 。从三个领域中心的参加者(意味着年龄 67 年) 经历了用动脉粥样硬化扫描的多种族的学习为冠的钙测量扫描的冠的风险因素评估和心脏的 CT 协议。结果调整了在诺思中国(北京) 的转变木头的冠的动脉钙 20 是 3.1 +/-0.4 并且在华南(上海和广州) 是 2.2 +/- 0.3 (P = 0.04 ) 。为北京的北城市的吝啬的钙分数比广州的南部的城市的高三倍(P = 0.01 ) 并且比为上海的南部的城市高 2.5 倍(P = 0.03 ) 。结论无临床症状的动脉粥样硬化的程度在广州和上海的二个南部的城市里比那在北京的北城市里是显著地更高的,甚至在为标准心脏的风险因素调整以后。这发现建议标准风险因素充分不在临床的 CHD 发生解释北方南方差别。Jie Huang Yang-Feng Wu Xiao-Qing Liu Ding Ding Lian-Cheng Zhao Bin Lu Xian Li Nathan D Wong Laurie D Dustin Stanley P Azen Robert C Detrano 2011Journal of Geriatric Cardiology2011,8,2:7
3笋芽顶端分生组织在竹秆横切面形态形成中的作用与机制研究显示文摘竹秆的横切面主要由表皮、皮层、维管组织、基本组织及髓腔(早期为髓组织)组成。这些组织均由笋芽茎顶端分生组织分化发育而来,且其在生长发育过程中促使了竹秆横切面形态(本文特指:竹秆横切面外轮廓形状、围度及壁-腔结构)的形成。然而,人们对于这一生长发育过程的生物学机制知之甚少。本研究利用解剖学、数学模拟等方法,对 20 种具不同秆径竹种的笋芽顶端分生组织进行了分析。研究结果发现,笋芽顶端分生组织指状形态的维持是竹子产生圆柱形竹秆的基础;在顶端分生组织细胞数目增加的同时,线性增加原体细胞数目应是竹子在演化过程中产生大径竹秆且保持规则壁-腔结构的方式。进一步通过研究一个竹壁增厚且壁-腔架构紊乱的稳定变异体———实肚竹( Phyllostachys nidularia f. farcta)发现,其笋芽顶端分生组织细胞数目减少且原体/原套细胞数比值降低使其产生了高比例的壁组分组织(指基本分生组织与肋状分生组织)与低比例的髓组织。上述 2 种组织的比例失衡,使得实肚竹笋芽在后续发育中壁组分组织随机挤入到了髓组织中,最终形成了实肚竹异常的竹秆横切面形态(竹壁多样化增厚且壁-腔结构紊乱)。此外,相对较小的顶端分生组织,使得实肚竹笋芽产生了较少的内源激素,如其生长素含量仅约为其原种篌竹的 67. 5%,各细胞分裂素含量也显著低于篌竹笋芽。转录组分析进一步发现,在实肚竹笋芽中与激素及代谢相关的功能基因呈显著下调表达。这些生理与分子变化最终导致了实肚竹竹秆矮化、秆径减小且生物量降低。本论文的研究结果为研究竹秆横切面发育提供了一个重要的视角,同时也为实肚竹厚壁茎秆的形成提出了一个合理的机制。Wang Y Sun X Ding Y Fei Z Jiao C Fan M Yao B Xin P Chu J Wei Q 王雨珺 魏强 2019世界竹藤通讯2019,17,3:5
4Inducing embryonic stem cells to differentiate into pancreatic beta cells by a novel three-step approach with activin A and all-trans retinoic acid显示文摘Shi Y Hou L Tang F Jiang W Wang P Ding M Deng H 2006中国生物学文摘2006,20,7:4
5Application of Petri Net to Fault Diagnosis in Satellite显示文摘A prototype of fault diagnosis based on Petri net, which is developed for a satellite tele-control subsystem, is introduced in this paper. Its structure is first given with the emphasis on a Petri net modeling tool which is designed using the object oriented method. The prototype is connected to the database with DAO (Date Access Object) technique, and makes the Petri net’s firing mechanism and its analyzing methods to be packed up as DLL (Dynamic Link Library) documents. Compared with the rule-based expert system method, the Petri ned-based one can store the knowledge in mathematical matrix and make inference more quickly and effectively.Ding Caihong School of Mechanics, DongHua University, Shanghai 200051, P R. China 2001Journal of Systems Engineering and Electronics2001,12,2:3
6Iteration process with errors to nonlinear equations in arbitrary Banach space显示文摘Ding X P 1998Acta Math Sinca1998,,:2
7Perturbed proximal point algorithms for general quasi-variational-like inclusions显示文摘Ding X P Lou C L 2000J Comput Appl Math2000,113,:2
8Generalized quasi-variational-like inclusions with nonconvex functionals显示文摘Ding X P 2001Appl Math Comput2001,122,:2
9Predictor-corrector iterative algorithms for solving generalized mixed variational-like inequalities显示文摘Ding X P 2003Appl Math Comput2003,,:2
10Percutaneous balloon mitral valvuloplasty in patients with mitral restenosis after previous surgical commissurotomy: a matched comparative study显示文摘LAU K W DING Z P GAO W 1996Eur Heart J1996,17,9:2
11A new class of generalized nonlinear implicit quasivariational inclusions with fuzzy mappings显示文摘Ding X P 2002J Comput Appl Math2002,138,:2
12Generalized nonlinear variational inequalities with nonmonotone set-valued mappings显示文摘Ding X P Tarafdar E 1994Appl Math Lett1994,7,4:2
13Existence and uniqueness of solutions for a general nonlinear variational inequality显示文摘Ding X P Tarafdar E 1995Appl Math Lett1995,8,1:2
14Thymidine kinase gene mutation leads to reduced virulence of pseudorabies virus显示文摘To explore correlation between the tk gene structure of pseudorabies virus (PRV) and its virulence, to study the effect of the gene mutation on PRV biological properties, and to investigate mechinism of reduced virulence, thymidine kinase (TK)-deficient mutant of pseudorabies virus strain Hubei (PRV HB) was isolated by selection for resistance to 5-bromodeoxyuridine. The tk genes of PRV HB and its TK mutant were cloned and sequenced. 1587 base pairs of the tk gene and flanking regions of wild-type (wt) virus were sequenced, which included an open reading frame (ORF) of 1098 bp encoding a protein of 366 amino acids. The ORF contained two 137-bp repeated sequences, which were connected by an adenosine. 1458 bp of the tk and flanking regions of TK- mutant were sequenced. Analysis of the tk gene sequence of TK mutant indicated that one of 137 bp repeated sequence and the connecting adenosine in the tk gene of the wt virus was deleted and a repeated sequence of 8 nucleotides (GCGCGCC) was inserted. AllPan, ZS Zhang, CY Ding, JH Min, P 2001Chinese Science Bulletin2001,46,23:2
15Algorithm of solutions for mixed implicit quasivariational inequalities显示文摘Ding X P 1999Comput Math Applic1999,38,:2
16The importance of an indigenous tree to southern African communities with specific relevance to its domestication and commercialization: a case of the marula tree显示文摘Local communities in southern Africa derive many benefits from marula [Sclerocarya birrea(A.Rich.) Hochst.subsp.caffra(Sond.) Kokwaro].These include the contribution of this species towards health,nutrition,food security and conservation by sharing local skills and knowledge related to it.Marula fruits can be eaten fresh,squeezed to make juice,brewed in traditional beer or used to make jam and jelly.The kernels are also edible and can be pressed to extract oil for cooking and cosmetics,i.e.,for skin and hair application.The bark,roots,seeds and leaves are exploited for traditional medicinal purposes.Marula has acquired significant commercial value since its fruits and other products have entered local,regional and international trade in southern Africa.To diver-sify fruit production and satisfy the increasing demands for this resource,several domestication initiatives have been carried out at regional and international levels.The accumulated knowledge and skills relevant to the establishment and commercialization of marula therefore provide an effective guide in areas where marula remains undomesticated or underutilized.We discuss the great importance of marula in southern Africa to reveal its great potential to regions where it remains unexploited.Neo C MOKGOLODI DING You-fang Moffat P SETSHOGO MA Chao LIU Yu-jun 2011Forestry Studies in China2011,13,1:2
17Preparation of stable micropatterns of gold on cell-adhesion-resistant hydrogels assisted by a hetero-bifunctional macromonomer linker显示文摘Surface patterning is very useful in biomaterial studies, yet it is not easy to prepare a micropattern with cell-adhesion contrast that is stable in a wet environment. Recently, a platform technique of transfer photolithography was invented to fabricate stable metal microarrays on the surface of a cell-adhesion resistant and mechanically biomimetic poly(ethylene glycol) hydrogel; the linker is the key chemical in such a transfer strategy. This article reports the design and synthesis of a hetero-bifunctional macromonomer linker with a thiol group at one end and an acryloyl group at the other end. The bifunctional linker was characterized by GPC and 1H NMR, and the average number of thiol groups in the bifunctional linker was detected by Ellman's reagent. The regent stability under wet conditions was also confirmed by the model reactants. The resultant micropatterned surfaces are meaningful for future studies of cell behaviors on mechanically biomimetic matrixes.SUN JianGuo GRAETER Stefan V TANG Jian HUANG JingHuan LIU Peng LAI YuXiao YU Lin MAJER Günter SPATZ Joachim P DING JianDong 2014Science China Chemistry2014,57,4:2
18氨氯地平和左旋氨氯地平对高血压患者血管内皮功能的影响显示文摘已证明氨氯地平可改善高血压患者的血管内皮功能,但左旋氨氯地平是否具有类似作用仍存在争议。该研究比较氨氯地平和左旋氨氯地平对高血压患者血管内皮功能的影响,应用体外细胞培养研究其相关作用机制。方法:该研究为一项随机、交叉试验。选取原发性高血压患者24例服用氨氯地平和左旋氨氯地平各6周,He Y Si D Yang C Ni L Li B Ding M Yang P 罗冬梅 叶鹏 2014中华高血压杂志2014,22,4:2
19Role of the crystallite phase of TiO2 in heterogeneous photocatalysis for phenol oxidation in water显示文摘Ding Z Lu G Q Greenfield P F 2000J Phys Chem B2000,104,19:1
20Hydroxylation of phenol catalyzed by copper Keggin-type heteropoly compounds with hydrogen peroxide 显示文摘Zhang H P Zhang X M Ding Y 2002New J Chem2002,26,:1
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