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    题名 作者 年代 出处 被引量
1Jackson’s theorem in Q_p spaces显示文摘A Jackson type inequality in Q p spaces is established, i.e., for any f (z) = Σ∞ j=0 ajzj ∈ Qp , 0≤p < ∞, a > 1, and k-1 ∈ N,where ω(1/k, f, Q p ) is the modulus of continuity in Q p spaces and C(a) is an absolute constant depending only on the parameter a.CHEN YingWei 1 & REN GuangBin 1, 2, 1 Department of Mathematics, University of Science and Technology of China, Hefei 230026, China 2 Department of Mathematics, University of Aveiro, P-3810-193 Aveiro, Portugal 2010Science China Mathematics2010,53,2:6
2应用随机反演改善储层表征的过程(英文)显示文摘为了适当地完成储层表征的过程,一个有效的方法就是把现场所有可以利用的信息融合成一个一致性的模型。在实际生产中实现这种融合并非简单的任务,所以有必要运用如地震反演等特殊方法。应用地震反演可以使测井数据和地震数据的有效结合成为可能,并且可以得到一个模型,该模型在预测过程中可通过流体数字模拟来验证。地震反演可以通过多种方法进行,主要分为两大类:一类是确定性方法(其代表是回归反演和约束稀疏脉冲反演),另一类是随机方法(其代表是地质统计学反演)。在本次研究中,通过随机反演结果和确定性反演结果的对比展示了随机反演是如何改进储层表征过程的。事实上,随机反演,可以运用较高的采样率(和储层模型的网格大小相接近),来产生一个更可靠的模型。随机反演的另一个好处就是随机方法可产生一些基本的统计测量值来改进解释精度,并且在储层表征过程中能生成大量的实现,从而使储层模型的不确定性研究成为可能。Sergio Sacani Sancevero Armando Zaupa Remacre Evaldo Cesario Mundim Rodrigo de Souza Portugal 2008地学前缘2008,15,1:4
3Oligomeric Procyanidins Induce Generation of Reactive Oxygen Species and Collapse of Mitochchondrial Membrane Potential in Glioblastoma Cell Lines显示文摘Objective The aim of the present study was to clarify the mechanism underlying glioma cell death upon oligomeric procyanidins (F2) exposure. Methods The cytotoxicity of F2 on U87 (human malignant glioblastoma cell line) and C6 (rat glioma cell line) cancer cells was evaluated, and changes of mitochondrial membrane potential (MMP) and production of reactive oxygen species (ROS) in drug-treated cells were monitored. Moreover, morphological changes associated with F2-induced cells death were examined. Results F2 induced a concentration-dependent increase in ROS production and decrease in MMP. Furthermore, pre-incubation with N-acetylcysteine (NAC) and rotenone (Rt), resulted in partial inhibition of F2-induced ROS generation and marked attenuation of cell death and the cytoplasmic vacuolization induced by F2. In addition, pretreatment with Rt markedly attenuated the MMP loss in F2-treated cells. However, pretreatment with NAC only markedly attenuated the MMP loss in F2-treated C6 cells. Conclusion The increase in ROS level is at least one of mechanisms associated with F2-induced glioma cell death as well as the cytoplasmic vacuolization formation that contribute to the cytotoxicity of F2 in glioma cells.ZHANG Feng-jiao1, YANG Jing-yu1, MOU Yan-hua1, SUN Bao-shan2, WANG Ji-ming3, WANG Fang1, WU Chun-fu1 1. Department of Pharmacology, Shenyang Pharmaceutical University, Shenyang 110016, China 2. Estaco Vitivinícola Nacional, Instituto National de Investigaco Agrária, Dois Portos 2565-191, Portugal 3. Laboratory of Molecular Immunoregulation, Cancer and Inflammation Program, Center for Cancer Research, National Cancer Institute at Frederick, Frederick Maryland 21702, USA 2009Chinese Herbal Medicines2009,1,1:3
4Life duration of new firms显示文摘MATA J PORTUGAL P 1994The Journal of Industrial Economics1994,42,3:1
5Stability study of 81 analytes in human whole blood, in serum and in plasma显示文摘Oddoze C Lombard E Portugal H 2012Clin Bioehem2012,45,6:1
6Effect of Lactobacillus delbrueckii on cholesterol metabolism in germ-free mice and on atherogenesis in apolipoprotein E knock-out mice显示文摘Portugal L R Goncalves J L Femandes L R 2006Brazilian Journal of Medical and Biological Research2006,,39:1
7Howe duality in Dunkl superspace显示文摘In the framework of superspace in Clifford analysis for the Dunkl version, the Fischer decomposition is established for solutions of the Dunkl super Dirac operators. The result is general without restrictions on multiplicity functions or on super dimensions. The Fischer decomposition provides a module for the Howe dual pair G × osp(1|2) on the space of spinor valued polynomials with G the Coxeter group, while the generators of the Lie superspace reveal the naturality of the Fischer decomposition.REN GuangBin 1,2 1 Department of Mathematics, University of Science and Technology of China, Hefei 230026, China 2 Department of Mathematics, University of Aveiro, Aveiro 3810-193, Portugal 2010Science China Mathematics2010,53,12:1
8Influenee of multimode universal adhesives and zirconia primer application techniques on zirconia repair 显示文摘Seabra B Arantes-Oliveira S Portugal J 2014J Prosthet Dent2014,112,2:1
9The Effects of Supplementation with Sunflower and Soybean Oils on The Fatty Acid Profile of Milk Fat from Grazing Dairy Cows显示文摘REGO O A ROSA H J D PORTUGAL P V 2005Anita Res2005,54,1:1
10Accessing gelling ability of vegetable proteins using rheological and fluorescence techniques显示文摘Ana Paula Batista Carla A M Portugal Isabel Sousa 2005International Journal of Biological Macromolecules2005,36,:1
11The geochemistry and isotope hydrology of the Southern Mexicali Valley in the area of the Cerro Prieto, Baja California (Mexico) geothermal field 显示文摘Portugal E Izquierdo G Truesdell A 2005Journal of Hydrology2005,313,34:1
12Engraftment syndrome following autologous hematopoietic stem cell transplantation: definition of diagnostic criteria显示文摘MAIOLINO A BIASOLI L PORTUGAL A C 2003Bone Marrow Transplant2003,31,:1
13Job search methods and outcomes显示文摘ADDISON J T PORTUGAL P 2002Oxford Economic Papers2002,54,3:1
14Synthesis and characterisation of cellulose/silica hybrids obtained by heteropoly acid catalysed sol-gel process显示文摘Sequeira S Evtuguin D V Portugal I 2007Materials Science and Engineering C2007,27,:1
15Ischemic stroke subtypes and thrombophilia in young and elderly Brazilian stroke patients admitted to a rehabilitation hospital显示文摘Carod Artal F J Nunes S V Portugal D 2005Stroke2005,36,9:1
16Mergers&Acquisitions Research:A Bibliometric Study of Top Strategy and International Business Journals显示文摘Manuel Portugal Ferreira Jo?o Carvalho Santos Martinho Isnard Ribeiro de Almeira Nuno Rosa Reis 2014Journal of Business Research2014,,12:1
17Cystatin C is not more sensitive than creatinine for detecting early renalimpairment in patients with diabetes显示文摘Oddoze C Morange S Portugal H Berland Y Dussol B 2001Am J Kidney Dis2001,38,2:1
18Tuberculous skeletal muscle involvement in acute leukemia: report on two cases显示文摘Del Giglio A Pinczowski H Portugal G 1997Tumori1997,83,2:1
19Closure and Divestiture by Foreign Entrants:The Impact on Entry and Post-entry Strategies显示文摘Mata J Portugal P 0,,:1
20Soil chemical and physical attributes of an inceptisol under different land uses, in the Zona Da MA TA of Minas Gerais State, Brazil显示文摘Portugal AF Costa ODV da Costa LM 2008Revista Brasileira De Ciencia Do Solo2008,32,1:1
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