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269篇 您的检索式:作者名="Y. Ma"
    题名 作者 年代 出处 被引量
1EGF promoter SNPs, plasma EGF levels and risk of breast cancer in Chinese women显示文摘Wang, Y. 2008南京医科大学学报(自然科学版)2008,28,12:32
2Functional Variant in microRNA-196a2 Contributes to the Susceptibility of Congenital Heart Disease in a Chinese Population显示文摘XU , J. Hu, Z.B. Xu, Z.F. Gu, H.Y Yi, L. Cao, H. L. Chen, J. P. Tian, T. Liang, J. Lin, Y. Qiu, W. S. Ma, H.X. Shen, H. B Chen, Y. J. 2009南京医科大学学报(自然科学版)2009,29,11:20
3EXPLOITATION AND APPLICATIONS OF METASTABLE AUSTENITE MATRIX WEAR ALLOYS显示文摘Fe based cast alloys with double phases structure of m etastable austenite m atrix an d eutecticcarbide M7 C3 were provided with the excellent properties of high abrasion resistance andhigher i m pact toughness . An i m portant reason of high abrasion resistance is hard ness violentincreasing on the m atrix surface because of w ear easily induced m artensite transfor m ation . The exploitation and applications of m etastable austenite m atrix wear alloys of Fe C Cr Nisyste m and Fe C Cr Mn system were described in this paper . The excellent properties of thesealloys w ill be sufficiently indicated by authors’exa m ples . To exploit a class of these alloyswith high abrasion resistance and various im pact toughness for m eeting the requirem ent of dif ferent environ ment , the proble m of the structure design of metastable austenite m atrix wearalloy w as also described in this paper .Y. Q. Ma , Y. H. Qi , X. L. Xu and L. Y. Dai Institute of Metal Material Technology , Dalian Maritime University , Dalian 116026 , China 1999Acta Metallurgica Sinica(English Letters)1999,12,5:12
4Simultaneous characterization of multiple properties of solid and liquid phases in crystallization processes using NIR显示文摘Near infrared spectroscopy (NIR) is now probably the most popular process analytical technology (PAT) for pharmaceutical and some other industries. However, unlike mid-IR, NIR is known to have difficulties in monitoring crystallization or precipitation processes because the existence of solids could cause distortion of the spectra. This phenomenon, seen as unfavorable previously, is however an indication that NIR spectra contain rich information about both solids and liquids, giving the possibility of using the same instrument for multiple property characterization. In this study, transfiectance NIR calibration data was obtained using solutions and slurries of varied solution concentration, particle size, solid concentration and temperature. The data was used to build calibration models for prediction of the multiple properties of both phases. Predictive models were developed for this challenging application using an approach that combines genetic algorithm (GA) and support vector machine (SVM). GA is used for wavelength selection and SVM for mode building. The new GA-SVM approach is shown to outperform other methods including GA-PLS (partial least squares) and traditional SVM. NIR is thus successfully applied to monitoring seeded and unseeded cooling crystallization processes of l-glutamic acid.Chao Y. Ma Xue Z. Wang 2011Particuology2011,9,6:7
5A method for analyzing on-line video images of crystallization at high-solid concentrations显示文摘Recent research has demonstrated that on-line video imaging is a very promising technique for monitoring crystallization processes. The bottleneck in applying the technique for real-time closed-loop control is considered as image analysis that needs to be robust, fast and able to handle varied image qualities due to temporal variations of operating conditions such as mixing and solid concentrations. Image analysis at highsolid concentrations turns out to be extremely challenging because crystals tend to overlap or attach to each other and the boundaries between the crystals are usually ambiguous. This paper presents an image segmentation algorithm that can effectively deal with images taken at high-solid concentrations. The method segments crystals attached to each other along the mostly related concave points on the contours of crystal blocks. The detailed procedure is introduced with application to crystallization of l-glutamic acid in a hot-stage reactor.Jian Wan Cai Y. Ma Xue Z. Wang 2008Particuology2008,6,1:7
6A sperm GPI-anchored protein elicits sperm-cumulus cross-talk leading to the acrosome reaction显示文摘Yin, L. Chung, C. M. Huo, R. Liu, H. Zhou, C. Xu, W. Zhu, H. Zhang, J. Shi, Q. Wong, H. Y.C. Chen, J. Lu, Y. Bi, Y. Zhao, C. Du, Y. Ma, M. Cai, Y. Chen, W. Y. Fok, K. L. Tsang, L. L. Li, K. Ni, Y. Chung, Y. W. Zhou, Z. Sha, J. Chan, H. C. 2009南京医科大学学报(自然科学版)2009,29,4:5
7The generalized solution of ill-posed boundary problem显示文摘In this paper, we define a kind of new Sobolev spaces, the relative Sobolev spaces Wk0,p(Ω, Σ). Then an elliptic partial differential equation of the second order with an ill-posed boundary is discussed. By utilizing the ideal of the generalized inverse of an operator, we introduce the generalized solution of the ill-posed boundary problem. Eventually, the connection between the generalized inverse and the generalized solution is studied. In this way, the non-instability of the minimal normal least square solution of the ill-posed boundary problem is avoided.CAO Weiping & MA Jipu Department of Mathematics and Physics, Huaihai Institute of Technology, Lianyungang 222005, China Y. Y. Tseng Functional Analysis Research Centre, Harbin Normal University, Harbin 150080, China 2006Science China Mathematics2006,49,7:5
8Engaging HIV-infected patients in antiretroviral therapy services: CD4 cell count testing after HIV diagnosis from 2005 to 2009 in Yunnan and Guangxi, China显示文摘中国的国家免费 antiretroviral 治疗节目的开始和扩大导致了的背景在它的参加者之中的幸存的重要改进。在加强 HIV 屏蔽和照顾的有效连接之上的在治疗范围休息上面的进一步的可伸缩的成功。及时 CD4 房间计数在 HIV 诊断以后测试是必要的决定一个病人是否为 antiretroviral 治疗满足标准,并且代表一个关键连接使 感染HIV 的病人参加适当照顾,它没在 China.Methods 被评估我们评估了所有病人 16 年在云南和 Guangxi.Multivariate 逻辑回归模型测试了从 2005~2009 积极的 HIV 的人,被使用房间计数在 H 以后在 6 个月以内测试识别与 CD4 的缺乏联系的因素在学习经期上, 30 (37%) 635 在 6 月收到 HIV 诊断以内题目收到了一个 CD4 房间计数。CD4 房间计数在 6 月 HIV 诊断以内测试的率在 2009 在 2005 ~ 62% 从 7% 显著地增加了。除 HIV 诊断的更早的年以外,为 CD4 房间计数在 multivariate 分析测试的否定预言者包括了老年,没结婚或不清楚的婚姻地位,下狱,在性播送疾病诊所的诊断,作为与人性交的人分类的 HIV 传播的模式,静脉内的药用户或传播线路不清楚少数种族,高中或高等教育的收据,在自愿的建议,并且有 HIV 的诊断和严峻的诊所积极 pa 然而, HIV 积极病人的一个相当大的比例仍然在 6 月诊断以内缺乏 CD4testing。特别地在有识别风险因素的病人之中,测试的改善 CD4 是必要的与艺术服务连接病人并且优化治疗范围。ZHANG Yao LU Lin LI Hui-qin LIU Wei TANG Zhi-rong FANG Hua Jennifer Y. Chen MA Ye ZHAO Yan Ray Y. Chen ZHANG Fu-jie 2011Chinese Medical Journal2011,,10:5
9PHF20 collaborates with PARP1 to promote stemness and aggressiveness of neuroblastoma cells through activation of SOX2 and OCT4显示文摘Wenyong Long Wei Zhao Bo Ning Jing Huang Junjun Chu Linfeng Li Qianquan Ma Changsheng Xing Helen Y. Wang Qing Liu Rong-Fu Wang 2018Journal of Molecular Cell Biology2018,10,2:5
10Pseudomonas stutzeri as a novel biocatalyst for pyruvate production from DL-lactate显示文摘Hao, J. R. Ma, C. Q. Gao, C. Qiu, J. H. Wang, M. Zhang, Y. N. Cui, X. Xu, P. 2007中国生物学文摘2007,21,4:4
11TWO METHODS FOR ASSESSMENT OF RESIDUAL LIFE OF HK-40 FURNACE TUBES显示文摘1.IntroductionThehightemperaturefurnacetubesfabricatedfromthecentrifugalcastresistantausteniticsteelofHK-40(25Cr-20Ni-0.4C)an...F.Z. Shen. G.X. Ma and X. Ling Nanjing University of Chemical Technology, Nanjing 210009, China X. Yang Jing Ling Petrochemical Corporation, Nanjing 210046, China X.Z. Zhang, J. Ruan and Y. Lu Lutianhua Group Incorporated, Luzhou 646300, China 1999Acta Metallurgica Sinica(English Letters)1999,12,1:4
12A New Perspective about Climate Change显示文摘K. B. Mao Y. Ma T.R. Xu Q. Liu J Q. Han L. Xia X. Y. Shen T. J. He 2015地球科学期刊(中英文版)2015,5,1:4
13First-Principles Study of the Influence of Lattice Misfit on the Behavior and the Ductility Effect of Hafnium in Ni-Ni3AI System显示文摘Y. Wu J. Guo W. Zhang X. Ma Q. Zhang J. Hou R. Huang X. Liu 2014Acta Metallurgica Sinica(English Letters)2014,27,1:3
14Characterization of high-pressure die-cast hypereutectic Al-Si alloys based on microstructural distribution and fracture morphology显示文摘The fracture behavior of high-pressure die-cast hypereutectic(HPDC) Al-Si alloys was investigated using a high-resolution laboratory CT and synchrotron X-ray tomography with a particular focus on the influence of HPDC microstructure. Results showed that microstructure of the alloy was mainly comprised of primary silicon particles(PSPs), Al dendrites, Cu-rich phases and pores. Most of the coarse PSPs, Cu-rich phases and pores were located in the center of the specimen. The rapid solidification of HPDC led to a heterogeneous microstructural feature. Elemental Cu was enriched in the frontiers of solid-liquid interface, causing the formation of large size dendritic arms. The pores were formed in the interdendrites which endured high stress intensity under high applied stress. Microcracks were originated from pores and further connected Cu-rich phases causing intergranular fracture. PSPs worked as obstacles causing piling-up dislocations in the phase interface. In the regions where large size of PSPs enriched in, PSPs ruptured rather than debonded from matrix, indicating transgranular fractures of PSPs. Microcracks originated around pores and PSPs tended to converge on the main cracks to decrease the energy required for crack propagation.X.Y. Jiao J. Wang C.F. Liu Z.P. Guo G.D. Tong S.L. Ma Y. Bi Y.F. Zhang S.M. Xiong 2019Journal of Materials Science & Technology2019,35,6:3
15MicroRNA Regulation of Intestinal Epithelial Tight Junction Permeability显示文摘Dongmei Ye Shuhong Guo Rana Al–Sadi Thomas Y. Ma 2011Gastroenterology2011,,4:3
16Nitrile biotransformations for the practical synthesis of highly enantiopure azido carboxylic acids and amides, ‘click’ to functionalized chiral triazoles and chiral beta-amino acids显示文摘Ma, D. Y. Wang, D. X. Zheng, Q. Y. Wang, M. X. 2007中国生物学文摘2007,21,3:3
17Enhancing enzymatic activity of penicillin G acylase by coexpressing pcm gene显示文摘Wang, T. W. Zhu, H. Ma, X. Y. Fei, Z. Y. Ma, Y. S. Wei, D. Z. 2007中国生物学文摘2007,21,4:3
18COMPARISON OF SURFACE PROPERTIES OF Ti-6Al-4V COATED WITH TITANIUM NITRIDE, TiN+TiC+Ti(C,N)/DLC, TiN/DLC AND TiC/DLC FILMS BY PLASMA-BASED ION IMPLANTATION显示文摘Ji, H.B. Xia, L.F. Ma, X.X. Sun, Y. Sun, M.R. 2000Acta Metallurgica Sinica(English Letters)2000,13,4:3
19Energy requirements for maintenance and growth of Dorper crossbred ram lambs显示文摘K.-D. Deng Q.-Y. Diao C.-G. Jiang Y. Tu N.-F. Zhang J. Liu T. Ma Y.-G. Zhao G.-S. Xu 2012Livestock Science (-)2012,,1:2
202-14 Investigation of the Thermonuclear 18Ne(α, p)21Na Reaction Rate via Resonant Elastic Scattering of 21Na + p显示文摘A nuclear astrophysics experiment was performed at CRIB (CNS low-energy Radioactive-Ion Beam separator)on Mar. 2011. The goal of this experiment is to study the reaction rate of 18Ne(,p)21Na reaction, which mightbe a key breakout reaction from the hot CNO cycle to rp-process in X-ray burst and nova. Yet its reaction rate ispoorly known.Explosive hydrogen burning is thought to be the main source of energy generation and a source of nucleosynthesisin X-ray burst and nova[1;2]. For example, XRBs are characterized by a sudden increase of X-ray emission withinonly a few seconds to a total energy output of about 1040 ergs, which is observed to repeat with some regularity.The recurrence time for single bursts can range from hours to days at the typical temperature of 0.4~2 GK. Thebursts have been interpreted as being generated by thermonuclear runaway on the surface of a neutron star thataccretes H- and He-rich material from a less evolved companion star in a close binary system. As shown in Fig. 1,under its typical temperature, the hydrogen burning in X-ray burst occurs from the hot CNO cycle:Zhang Liyong He Jianjun Xu Shiwei H.Yamaguchi S. Kubono Y.Wakabayashi Chen Size Hu Jun Ma Peng Y. Togano T. Hashimoto D. Kahl T. Teranishi Chen Ruofu Wang Hongwei Tian Wendong Guo Bing S. Hayakawa N. Iwasa T. Yamada T. Komatsubara 2014IMP & HIRFL Annual Report2014,,1:2
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