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| 1 | 四开关逆变器供电永磁同步电机直接转矩控制系统转矩脉动抑制显示文摘永磁同步电机直接转矩控制(PMSM DTC)系统的转矩脉动问题一直被广泛关注,特别是在四开关逆变器供电系统中,由于可用电压矢量减少,转矩脉动更加严重。空间矢量调制(SVM)是一种常用的消除电力谐波的调制技术,更可用于电机控制中转矩脉动的削减。该文针对四开关逆变器供电PMSM DTC系统的特殊性,采用了一种新型SVM方法,分析了等效零矢量模拟技术,将传统SVPWM调制中的劈零思想引入到空间矢量的合成上。仿真及实验结果验证了该新型SVM DTC方法大大减小了转矩脉动,且仍保持了DTC系统固有的快速转矩动态响应。 | 孙丹 何宗元 Ivonne Yznaga Blanco 贺益康 | 2007 | 中国电机工程学报2007，27，21： | 30 |
| 2 | 永磁同步电机驱动系统逆变器容错重构控制显示文摘针对永磁同步电机(PMSM)驱动系统在逆变器故障状态下的容错控制,讨论了容错逆变器的拓扑结构,分析了六开关三相逆变器和四开关三相逆变器驱动系统输出电压空间矢量及其对系统性能的影响。研制了一个基于常规六开关逆变器的容错辅助控制电路,实现了容错逆变器在故障下的重构。针对PMSM直接转矩控制系统的实验研究,验证了容错辅助控制电路设计的正确性,证明采用容错逆变器可实现驱动系统的不间断运行。 | IVONNE Y B 孙丹 刘学 贺益康 | 2008 | 电力电子技术2008，42，7： | 8 |
| 3 | PMSM DTC系统逆变器故障的模糊神经网络诊断(英文)显示文摘针对永磁同步电机(PMSM)直接转矩控制(DTC)系统中常见的电力电子逆变器故障,提出了一种基于智能策略的诊断方法。根据PMSM DTC系统逆变器故障的特性,建立了一个自适应神经模糊网络的模型,选择PMSM的电流量作为故障检测和诊断的信号源,对系统正常及故障状态下的电流特性进行了分析,并利用训练好的模糊神经网络进行逆变器的故障诊断。仿真结果表明,该方法仅需检测电机的一相电流便可直接实现逆变器多种常见故障的诊断,摒弃了复杂的信号变换,同时节约了系统成本,保障了故障系统容错策略的实施。 | YZNAGA BLANC0 Ivonne 孙丹 贺益康 | 2008 | 电机与控制学报2008，12，2： | 7 |
| 4 | Single nucleotide polymorphism in the tumor necrosis factor-alpha gene affects inflammatory bowel diseases risk显示文摘AIM: To investigate the role that single nucleotide polymorphisms (SNPs) in the promoter of the tumour necrosis factor-alpha (TNF-α) gene play in the risk of inflammatory bowel diseases (IBDs) in a New Zealand population, in the context of international studies. METHODS: DNA samples from 388 patients with Crohn's disease (CD), 405 ulcerative colitis (UC), 27 indeterminate colitis (IC) and 201 randomly selected controls, from Canterbury, New Zealand were screened for 3 common polymorphisms in the TNF-α receptor: -238 G→A, -308 G→A and -857C→T, using a TaqmanR assay. A meta-analysis was performed on the data obtained on these polymorphisms combined with that from other published studies. RESULTS: Individuals carrying the -308 G/A allele had a significantly (OR = 1.91, χ2 = 17.36, P < 0.0001) increased risk of pancolitis, and a 1.57-fold increased risk (OR = 1.57, χ2 = 4.34, P = 0.037) of requiring a bowel resection in UC. Carrying the -857 C/T variant decreased the risk of ileocolonic CD (OR = 0.56, χ2 =4.32, P = 0.037), and the need for a bowel resection (OR = 0.59, χ2 = 4.85, P = 0.028). The risk of UC was reduced in individuals who were smokers at diagnosis, (OR = 0.48, χ2 = 4.86, P = 0.028). CONCLUSION: TNF-α is a key cytokine known to play a role in inflammatory response, and the locus for the gene is found in the IBD3 region on chromosome 6p21, known to be associated with an increased risk for IBD. The -308 G/A SNP in the TNF-α promoter is functional, and may account in part for the increased UC risk associated with the IBD3 genomic region. The -857 C/T SNP may decrease IBD risk in certain groups. Pharmaco- or nutrigenomic approaches may be desir- able for individuals with such affected genotypes. | Lynnette R Ferguson Claudia Huebner Ivonne Petermann Richard B Gearry Murray L Barclay Pieter Demmers Alan McCulloch Dug Yeo Han | 2008 | World Journal of Gastroenterology2008，14，29： | 7 |
| 5 | Production and activity of matrix metalloproteinases during liver fibrosis progression of chronic hepatitis C patients显示文摘BACKGROUND Matrix metalloproteinases(MMPs)participate in the degradation of extracellular matrix compounds,maintaining the homeostasis between fibrogenesis and fibrolytic processes in the liver.However,there are few studies on the regulation of liver MMPs in fibrosis progression in humans.AIM To assess the production activity and regulation of matrix metalloproteinases in liver fibrosis stages in chronic hepatitis C(CHC).METHODS A prospective,cross-sectional,multicenter study was conducted.CHC patients were categorized in fibrosis grades through FibroTest®and/or FibroScan®.Serum MMP-2,-7,and-9 were determined by western blot and multiplex suspension array assays.Differences were validated by the Kruskal-Wallis and Mann-Whitney U tests.The Spearman correlation coefficient and area under the receiver operating characteristic curve were calculated.Collagenolytic and gelatinase activity was determined through the Azocoll substrate and zymogram test,whereas tissue inhibitor of metalloproteinase-1 production was determined by dot blot assays.RESULTS Serum concentrations of the MMPs evaluated were higher in CHC patients than in healthy subjects.MMP-7 distinguished early and advanced stages,with a correlation of 0.32(P<0.001),and the area under the receiver operating characteristic displayed moderate sensitivity and specificity for MMP-7 in F4(area under the receiver operating characteristic,0.705;95%confidence interval:0.605-0.805;P<0.001).Collagenolytic activity was detected at F0 and F1,whereas gelatinase activity was not detected at any fibrosis stage.Tissue inhibitor of metalloproteinase-1 determination showed upregulation in F0 and F1 but downregulation in F2(P<0.001).CONCLUSION High concentrations of inactive MMPs were present in the serum of CHC patients,reflecting the impossibility to restrain liver fibrosis progression.MMPs could be good diagnostic candidates and therapeutic targets for improving novel strategies to reverse liver fibrosis in CHC. | Moises Martinez-Castillo Abigail Hernandez-Barragan Ivonne Flores-Vasconcelos Marina Galicia-Moreno Dorothy Rosique-Oramas Jose Luis Perez-Hernandez Fatima Higuera-De la Tijera Eduardo E Montalvo-Jave Aldo Torre-Delgadillo Paula Cordero-Perez Linda Muñoz-Espinosa David Kershenobich Gabriela Gutierrez-Reyes | 2021 | World Journal of Hepatology2021，13，2： | 2 |
| 6 | Characterization of chitosan–whey protein films at acid pH显示文摘 | Catarina O. Ferreira Carla A. Nunes Ivonne Delgadillo J.A. Lopes-da-Silva | 2009 | Food Research International2009，，7： | 2 |
| 7 | Histological and immunophenotypic profile of nasal NK/T cell lymphomas from Peru:high prevalence of p53 overexpression显示文摘 | Janet L Ivonne G | 1999 | Hum Pathol1999，30，7： | 1 |
| 8 | Computing Adsorption Isotherms for Benzene, Toluene, and p-Xylene in Heulandite Zeolite 显示文摘 | MICHELLE M LABOY IVONNE SANTIAGO | 1999 | Ind Eng Chem Res1999，38，： | 1 |
| 9 | A diffusive-convective model for the dynamics of population-toxicant interactions:some analytical and numerical results显示文摘 | Bruno Buonomo Andrea DiLiddo Ivonne Sgura | 1999 | Mathmatical Biosciences1999，157，： | 1 |
| 10 | A combined electrocoagulation sorption process applied to mixed industrial wastewater显示文摘 | Ivonne Linares-Hern'andez Carlos Barrera-D'iaz | 2007 | Journal of Hazardous Materials2007，144，1： | 1 |
| 11 | Gradient flow methods for matrix completion with prescribed eigenvalues显示文摘 | Moody T Chu Fasma Diele Ivonne Sgura | 2004 | Linear Algebra and its Applications2004，，： | 1 |
| 12 | Flow -through polymerase chain reaction in chip thermocyclers显示文摘 | Ivonne Schneegaβ Johann Michael Koehler | 2001 | Reviews in Molecular Bioteclmology2001，82，： | 1 |
| 13 | Assessment of sic Gy lated high-dose partial-body irradiation by PCC -R assay 显示文摘 | Ivonne Romero Omar Garcia Ana I | 2013 | Journal of Radiation Research2013，54，5： | 1 |
| 14 | A combined electrocoagulation-sorption process applied to mixed industrial wastewater显示文摘 | Ivonne L H CARLOS B D GABTIELA R M | 2007 | Journal of Hazardous Materials2007，144，12： | 1 |
| 15 | Prediction of the Port wine age using an electronic tongue 显示文摘 | Rudnitskaya A Ivonne Delgadillo Legin A | 2007 | Chemometrics and Intelligent Laboratory Systems2007，88，1： | 1 |
| 16 | Entrainer selection rules for the separation of azeotropic andclose boiling temperature mixtures by homogeneous batch distillationprocess显示文摘 | Ivonne R D | 2001 | Ind Eng Chem Res2001，40，： | 1 |
| 17 | Heterogeneous entrainer selection for the separation of azeotropic and close boiling temperature mixtures by homogeneous batch distillation process显示文摘 | Ivonne R D | 2001 | Ind Eng Chem Res2001，40，： | 1 |
| 18 | Application of Mid- and Near-Infrared Spectroscopy for the Control and Chemical Evaluation of Brine Solutions and Traditional Sea Salts显示文摘 | Andrea C. Galvis-Sánchez Inês C. Santos Raquel B. R. Mesquita Jo?o A. Lopes António O. S. S. Rangel Ivonne Delgadillo | 2013 | Food Analytical Methods2013，，2： | 1 |
| 19 | Aviation safety and maintenance under major organizational changes, investigating non-existing acci- dents显示文摘 | Ivonne A Herrera | 2009 | Accident Analysis and Prevention2009，41，： | 1 |
| 20 | Transcription-dependent gene looping of the HIV-1 provirus is dictated by recognition of pre-mRNA processing signals显示文摘 | Kelly JP Marina L Ivonne M | 2008 | Molecular Cell2008，29，1： | 1 |
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