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11篇 您的检索式:作者名="VALDERRAMA G E"
    题名 作者 年代 出处 被引量
1Direct torque control of induction motors: stability analysis and performance improvement 显示文摘Ortega R Barabanov N Valderrama G E 2001IEEE Trans on Automatic Control2001,46,8:1
2Dissipativitybased adaptive and robust control of LIPS in unbalanced operation 显示文摘VALDERRAMA G E STANKOViC A M MATTAVELLI P 2003IEEE Transaction on Power Electronics2003,18,4:1
3Direct Torque Control of Induction Motors:Stability Analysis and Performance Improvement显示文摘Ortega R Barabanov N Valderrama G E 2001IEEE Trans on Automatic Control2001,46,8:1
4Reactive power and unbalance compensation using STATCOM with dissipativity-based control显示文摘Valderrama G E Mattavelli P Stankovic A M 2001IEEE Trans on Control System Technology2001,9,5:1
5Direct torque control of induction motors: Stability analysis and performance improvement显示文摘Ortega R Barabanov N Valderrama G E 2001IEEE Transactions on Automatic Control2001,46,8:1
6Predictive model for the heat capacity of ionic liquids usingthe mass connectivity index 显示文摘Valderrama J O Martinez G Roberto E Rojas R E 2011Thermochimica Acta2011,513,1:1
7Helicobacter pylori vacA s1a and s1b alleles from clinical isolates from different regions of Chile show a distinct geographic distribution显示文摘AIM: To establish the most common vacA alleles in Helicobacter pylori(H pylori) strains isolated from Chilean patients and its relationship with gastritis and gastroduodenal ulcers.METHODS: Two hundred and forty five H pylori clinical isolates were obtained from 79 biopsies from Chilean infected patients suffering from gastrointestinal diseases. An average of 2-3 strains per patient was isolated and the vacA genotype was analyzed by PCR and 3% agarose electrophoresis. Some genotypes were checked by DNA sequencing.RESULTS: The most prevalent vacA genotype inChilean patients was s1b m1 (76%), followed by s1a m1 (21%). In contrast, the s2 m2 genotype was scarcely represented (3%).The s1b m1 genotype was found most frequently linked to gastropathies (P<0.05) rather than ulcers. Ulcers were found more commonly in male and older patients. Curiously, patients living in cities located North and far South of Santiago, the capital and largest Chilean city, carried almost exclusively strains with the s1b m1 genotype. In contrast, patients from Santiago and cities located South of Santiago carried strains with either one or both s1a m1 and s1b m1 genotypes.Regarding the s2 m2 genotype, comparison with GenBank sequences revealed that Chilean s2 sequence was identical to those of Australian, American, and Colombian strains but quite different from those of Alaska and India.CONCLUSION: Differences in geographic distribution of the s and m vaccA alleles in Chile and a relationship of s1b m1 genotype with gastritis were found. Sequence data in part support a hispanic origin for the vacA genotype.Asymmetric distribution of genotypes s1b m1 and s2 m2recedes H Pyloristrain distribution in Spain and Portugal.MI Díaz A Valdivia P Martínez JL Palacios P Harris J Novales E Garrido D Valderrama C Shilling A Kirberg E Hebel J Fierro R Bravo F Siegel G Leon G Klapp A Venegas 2005World Journal of Gastroenterology2005,11,40:1
8Dissi-pativity-based adaptive and robust control of UPS in unbalancedoperation 显示文摘VALDERRAMA G E STANKOVIC A M MATTAVELLI P 2003IEEE Transactions on Power Electronics2003,18,4:1
9Direct torque control of induction motors:Stability analysis and performance improvement显示文摘ORTEGA R BARABANOV N VALDERRAMA G E 2001IEEE Trans on Automatic Control2001,46,8:1
10Analysis and experimentation of nonlinear adaptive controllers for the series resonant converter显示文摘Ca_rrasco J M Galvan E Valderrama G E 2000IEEE Transactions on Power Electronics2000,15,3:1
11Direct torque control of induction motors:Stability analysis and performance improvement显示文摘Ortega R Barabanov N Valderrama G E 2001IEEE Transactions on Automatic Control2001,46,8:1
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