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197篇 您的检索式:作者名="Ramirez D A"
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1Device-associated infection rates, mortality, length of stay and bacterial resistance in intensive care units in Ecuador: International Nosocomial Infection Control Consortium's findings显示文摘AIM To report the results of the International Nosocomial Infection Control Consortium(INICC) study conducted in Quito, Ecuador.METHODS A device-associated healthcare-acquired infection(DAHAI) prospective surveillance study conducted from October 2013 to January 2015 in 2 adult intensive care units(ICUs) from 2 hospitals using the United States Centers for Disease Control/National Healthcare Safety Network(CDC/NHSN) definitions and INICC methods. RESULTS We followed 776 ICU patients for 4818 bed-days. The central line-associated bloodstream infection(CLABSI) rate was 6.5 per 1000 central line(CL)-days, the ventilator-associated pneumonia(VAP) rate was 44.3 per 1000 mechanical ventilator(MV)-days, and the catheterassociated urinary tract infection(CAUTI) rate was 5.7 per 1000 urinary catheter(UC)-days. CLABSI and CAUTI rates in our ICUs were similar to INICC rates [4.9(CLABSI) and 5.3(CAUTI)] and higher than NHSN rates [0.8(CLABSI) and 1.3(CAUTI)]- although device use ratios for CL and UC were higher than INICC and CDC/NSHN's ratios. By contrast, despite the VAP rate was higher than INICC(16.5) and NHSN's rates(1.1), MV DUR was lower in our ICUs. Resistance of A. baumannii to imipenem and meropenem was 75.0%, and of Pseudomonas aeruginosa to ciprofloxacin and piperacillin-tazobactam was higher than 72.7%, all them higher than CDC/NHSN rates. Excess length of stay was 7.4 d for patients with CLABSI, 4.8 for patients with VAP and 9.2 for patients CAUTI. Excess crude mortality in ICUs was 30.9% for CLABSI, 14.5% for VAP and 17.6% for CAUTI. CONCLUSION DA-HAI rates in our ICUs from Ecuador are higher than United States CDC/NSHN rates and similar to INICC international rates.Estuardo Salgado Yepez Maria M Bovera Victor D Rosenthal Hugo A González Flores Leonardo Pazmino Francisco Valencia Nelly Alquinga Vanessa Ramirez Edgar Jara Miguel Lascano Veronica Delgado Cristian Cevallos Gasdali Santacruz Cristian Pelaéz Celso Zaruma Diego Barahona Pinto 2017World Journal of Biological Chemistry2017,8,1:23
2气象卫星云图的多分辨小波分解及人工神经网络降水估计研究显示文摘采用多分辨小波分析对卫星图象进行预处理 ,在保留其特征信息的同时 ,减小了数据量 ,改善了神经网络训练过程的收敛性能 ,提高了处理速度。采用这一方法根据 GOES- 8的红外亮温图象和气象雷达资料对巴西圣保罗州中部的降水量估计进行了试验 ,取得了良好的效果。李伟钢 Maria C V Ramirez Nelson J Ferreira 石立华 Leonardo D de A Sá 2000南京气象学院学报2000,23,2:13
3Polyp detection rates using magnification with narrow band imaging and white light显示文摘AIM: To compare the yield of adenomas between narrow band imaging and white light when using high definition/magnification. METHODS: This prospective, non-randomized comparative study was performed at the endoscopy unit of veteran affairs medical center in Phoenix, Arizona. Consecutive patients undergoing first average risk colorectal cancer screening colonoscopy were selected. Two experienced gastroenterologists performed all the procedures that were blinded to each other's findings. Demographic details were recorded. Data are presented as mean ± SEM. Proportional data were compared using the χ2 test and means were compared using the Student's t test. Tandem colonoscopy was performed in a sequential and segmental fashion using one of 3 strategies: white light followed by narrow band imaging [Group A: white light(WL) → narrow band imaging(NBI)]; narrow band imaging followed by white light(Group B: NBI → WL) and, white light followed by white light(Group C: WL → WL). Detection rate of missed polyps and adenomas were evaluated in all three groups. RESULTS: Three hundred patients were studied(100 in each Group). Although the total time for the colonoscopy was similar in the 3 groups(23.8 ± 0.7, 22.2 ± 0.5 and 24.1 ± 0.7 min for Groups A, B and C, respectively), it reached statistical significance between Groups B and C(P < 0.05). The cecal intubation time in Groups B and C was longer than for Group A(6.5 ± 0.4 min and 6.5 ± 0.4 min vs 4.9 ± 0.3 min; P < 0.05). The withdrawal time for Groups A and C was longer than Group B(18.9 ± 0.7 min and 17.6 ± 0.6min vs 15.7 ± 0.4 min; P < 0.05). Overall miss rate for polyps and adenomas detected in three groups during the second look was 18% and 17%, respectively(P = NS). Detection rate for polyps and adenomas after first look with white light was similar irrespective of the light used during the second look(WL → WL: 13.7% for polyps, 12.6% for adenomas; WL → NBI: 14.2% for polyps, 11.3% for adenomas). Miss rate of polyps and adenomas however was significantly higher when NBI was used first(29.3% and 30.3%, respectively; P < 0.05). Most missed adenomas were ≤ 5 mm in size. There was only one advanced neoplasia(defined by size only) missed during the first look. CONCLUSION: Our data suggest that the tandem nature of the procedure rather than the optical techniques was associated with the detection of additional polyps' and adenomas.Nooman Gilani Sally Stipho James D Panetta Sorin Petre Michele A Young Francisco C Ramirez 2015World Journal of Gastrointestinal Endoscopy2015,7,5:2
4Effect of nozzle orifice geometry on spray, combustion, and emission characteristics under diesel engine conditions显示文摘Som S Ramirez A I Longman D E 2011Fuel2011,90,3:1
5Metal thbrication by ad- ditive manuthcturing using laser and electron beam melting technol- ogies显示文摘Muir L E Gaytan S M Ramirez D A 2012J Material Science and Technology2012,28,1:1
6The influence of eollagen-glycosaminoglyean scaffold relative density and microstructural anisotropy on tenocyte bioactivity and transcriptomic stability 显示文摘CALIARI S R WEISGERBER D W RAMIREZ M A 2012J Mech Behav Biomed Ma- ter2012,11,11:1
7Regulation of AKT(ser473)phosphorylation by choline kinase in breast carcinoma cells显示文摘Chua BT Gallego-Ortega D Ramirez de Molina A 0,,:1
8Prevalence esti- mates and health-related correlates of cognitive impairment from a probability sample of community-residing Latino elders显示文摘Ramirez M Teresi J A Holmes D etal 2007J Aging Health2007,19,4:1
9Does leadership matter? CEO leadership attributes and profitability under conditions of perceived environmental uncertainty显示文摘 RAMIREZ G G HOUSE R J PURANAM P 2001Academy of Management Journal2001,44,1:1
10Microstructure evolution associated with adiabatic shear bands and shear band failure in baUistic plug formation in Ti-6A1-4V targets 显示文摘Murr L E Ramirez A C Gaytan S M Lopez M I Martinez E Y Hernandez D H Martinez E 2009Materials Science and Engineering A2009,516,:1
11On-line state estimation and parameter identification for batch fermentation显示文摘Gee D A Ramirez W F 1996Biotechnology Progress (S8756-7938)1996,12,1:1
12Bond Strength of Epoxy - coated Reinforcement显示文摘Cleary D B Ramirez J A 1991ACI J Materials1991,88,2:1
13Design of a virtual instrument for water quality monitoring across the internet显示文摘TORAN F RAMIREZ D NAVANO A E 2001Sensors and Actuators B:Chemical2001,76,13:1
14Synthesis and properties of hydrophilic networks based on poly (ethylene glycol) and β-eyclodextrin 显示文摘Luis C Camilo A Ramirez D 2007Macromol Chem Phys2007,208,8:1
15Structure and correlations of the flux line lattice in crystalline Nb through the peak effect显示文摘Gammel P L Yaron U Ramirez A P Bishop D J Chang A M Ruel R Pfeiffer L N Bucher E D'Anna G Huse D A Mortensen K Eskildsen M R Kes P H 0,,:1
16Defects in carbon nanotubes显示文摘ZHOU O FLEMING R M MURPHY D W CHEN C H HADDON R C RAMIREZ A P GLARUM S H 1994Science1994,263,:1
17Does leadership matter? CEO leadership attributes and profitability under conditions of perceived environmental uncertainty显示文摘Waldman D A Ramirez G G House R J 2001Academy of Management Journal2001,44,1:1
18The use of culture redox potential and oxygen uptake rate for assessing glucose and glutamine depletion in hybridoma cultures显示文摘Higareda A E Possani L D Ramirez O T 1997Biotechnol Bioeng1997,56,5:1
19Bioinspired detection of light using a porphyrin-sensitized single-wall nanotube field effect transistor显示文摘HECHT D S RAMIREZ R J A BRIMAN M 2006Nano Letters2006,6,9:1
20Surimi of fish species from the Gulf of Mexico: evaluation of the setting phenomenon显示文摘MORALESA O G RAMIREZ J A VIVANCO D I 2001Food Chemistry2001,75,1:1
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