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7篇 您的检索式:作者名="Carlos RIBAS"
    题名 作者 年代 出处 被引量
1Shear-flexural strength mechanical model for the design and assessment of reinforced concrete beams subjected to point or distributed loads显示文摘最近为苗条增强的水泥的 shear 力量开发的一个机械模型微笑有或没有砍加强与一致地分布式的负担被介绍并且延长给元素,特殊在这份报纸集中于实际设计和评价。如果他们存在, shear 强度被认为是具体压缩弦转移的 shear 的和,沿着裂缝,由于张力的剩余和摩擦压力,由马镫并且,,由纵的加强。把简单表情基于结构的力学的原则为各个独立被导出砍转移行动并且为他们以最终的限制状态的相互作用。模型的预言与使用 EC2, MC2010 和 ACI 318-08 食物获得的那些相比,他们从最近出版的 ACI-DAfStb 数据库适合可得到的试验性的结果很好砍有或没有马镫的苗条增强的具体横梁上的测试。最后,一个详细应用程序例子被举了,获得到批评裂缝的 shear 力量和假定形状和位置的每个作出贡献的部件。Antonio MAIRI Antoni CLADERA Jesus BAIRAN Eva OLLER Carlos RIBAS 2014Frontiers of Structural and Civil Engineering2014,8,4:5
2Serum proinflammatory cytokines and nutritional status in pediatric chronic liver disease显示文摘AIM: To evaluate the nutritional status and its association with proinflammatory cytokines in children with chronic liver disease.METHODS: We performed a cross-sectional study with 43 children and adolescents, aged 0 to 17 years, diagnosed with chronic liver disease. All patients regularly attended the Pediatric Hepatology Unit and were under nutritional follow up. The exclusion criteria were fever from any etiology at the time of enrollment, inborn errors of the metabolism and any chronic illness. The severity of liver disease was assessed by Child-Pugh, Model for End-stage Liver Disease(MELD) and Pediatric End Stage Liver Disease(PELD) scores. Anthropometric parameters were height/age, body mass index/age and triceps skinfold/age according to World Health Organization standards. The cutoff points for nutritional status were risk of malnutrition(Z-score <-1.00) and malnutrition(Z-score <-2.00). Interleukin-1β(IL-1β), IL-6 and tumor necrosis factor-α levels were assessed by commercial ELISA kits. For multivariate analysis, linear regression was applied to assess the association between cytokine levels, disease severity and nutritional status. RESULTS: The median(25th-75 th centile) age of the study population was 60(17-116)-mo-old, and 53.5% were female. Biliary atresia was the main cause of chronic liver disease(72%). With respect to Child-Pugh score, cirrhotic patients were distributed as follows: 57.1% Child-Pugh A, a mild presentation of the disease, 34.3% Child-Pugh B, a moderate stage of cirrhosis and 8.6% Child-Pugh C, were considered severe cases. PELD and MELD scores were only above the cutoff point in 5 cases. IL-6 values were increased in patients at nutritional risk(34.9%) compared with those who were well-nourished [7.12(0.58-34.23) pg/m L vs 1.63(0.53-3.43) pg/m L; P = 0.02], correlating inversely with triceps skinfold-for-age z-score(rs =-0.61; P < 0.001). IL-6 levels were associated with liver disease severity assessed by Child-Pugh score(P = 0.001). This association remained significant after adjusting for nutritional status in a linear regression model. CONCLUSION: High IL-6 levels were found in children with chronic liver disease at nutritional risk. Inflammatory activity may be related to nutritional status deterioration in these patients.Daniele Santetti Maria Inês de Albuquerque Wilasco Cristina Toscani Leal Dornelles Isabel Cristina Ribas Werlang Fernanda Urruth Fontella Carlos Oscar Kieling Jorge Luiz dos Santos Sandra Maria Goncalves Vieira Helena Ayako Sueno Goldani 2015World Journal of Gastroenterology2015,21,29:2
3Severe sepsis mortality prediction with logistic regression over latent factors显示文摘Vicent J. Ribas Alfredo Vellido Juan Carlos Ruiz-Rodríguez Jordi Rello 2011Expert Systems With Applications2011,,2:1
4Inter- and intraobserver agreement in computed tomography enterography in inflammatory bowel disease显示文摘AIM To evaluate intra- and interobserver agreement in imaging features in inflammatory bowel disease and comparison with fecal calprotectin(FC) levels.METHODS Our institutional computed tomography enterography(CTE) database was retrospectively queried to identify patients who underwent CTE from January 2014 to June 2015. Patient inclusion criteria were confirmed inflammatory bowel disease(IBD) and FC collected < 4 mo after CTE without any change in clinical treatment or surgical treatment during this interval. The exclusion criterion was poor image quality. Two blinded abdominal radiologists, with 12 and 3 years of experience analyzed the CTE regarding localization(small bowel, colonic, both, or no disease detected);type of IBD(inflammatory, stenosing, fistulizing, > 1 pattern, or normal); and signs of active disease(present or absent). In 42 of 44 patients evaluated, routine CTE reports were made by one of the readers who reevaluated the CTEs ≥ 6 mo later, to determine the intraobserver agreement. FC was considered a sign of disease activity when it was higher than 250 μg/g.RESULTS Forty-four patients with IBD(38 with Crohn's disease and 6 with ulcerative colitis) were included. There was a moderate interobserver agreement regarding localization of IBD(k = 0.540), type of disease(k = 0.410) and the presence of active signs in CTE(k = 0.419). There was almost perfect intraobserver agreement regarding localization, type and signs of active disease in IBD. The k values were 0.902, 0.937 and 0.830, respectively. After a consensus between both radiologists regarding inflammatory activity in CTE, we found that 24(85.7%) of 28 patients who were classified with active disease had elevated FC, and six(37.5%) of 16 patients without inflammatory activity in CTE had elevated FC(P = 0.003). The correlation between elevated FC and the presence of active disease in CTE was significant(k = 0.495, P = 0.001).CONCLUSION We found almost perfect intraobserver and moderate interobserver agreement in the signs of active disease in CTE with concurrence of high FC levels.Natally Horvat Camila Carlos Tavares Adriana Ribas Andrade Julia Campos Sim?es Cabral Hilton Muniz Le?o Filho Angela Hissae Motoyama Caiado Serli Kiyomi Nakao Ueda André Zonetti de Arruda Leite Aytan Miranda Sipahi Manoel de Souza Rocha 2016World Journal of Gastroenterology2016,22,45:1
5Determination of double-and single-stranded DNA breaks in bovine sperm is predictive of their fertilizing capacity显示文摘Background:The analysis of chromatin integrity has become an important determinant of sperm quality.In frozenthawed bovine sperm,neither the sequence of post-thaw injury events nor the dynamics of different types of sperm DNA breaks are well understood.The aim of the present work was to describe such sperm degradation aftermath focusing on DNA damage dynamics,and to assess if this parameter can predict pregnancy rates in cattle.Results:A total of 75 cryopreserved ejaculates from 25 Holstein bulls were evaluated at two post-thawing periods(0-2 h and 2-4 h),analyzing global and double-stranded DNA damage through alkaline and neutral Comet assays,chromatin deprotamination and decondensation,sperm motility,viability,acrosomal status,and intracellular levels of total ROS,superoxides and calcium.Insemination of 59,605 females was conducted using sperm from the same bulls,thus obtaining the non-return to estrus rates after 90 d(NRR).Results showed an increased rate of double-stranded breaks in the first period(0-2 h:1.29±1.01%/h vs.2-4 h:0.13±1.37%/h;P<0.01),whereas the rate of sperm with moderate+high single-stranded breaks was higher in the second period(0-2 h:3.52±7.77%/h vs.2-4h:21.06±11.69%/h;P<0.0001).Regarding sperm physiology,viability decrease rate was different between the two periods(0-2 h:-4.49±1.79%/h vs.2-4 h:-2.50±3.39%/h;P=0.032),but the progressive motility decrease rate was constant throughout post-thawing incubation(0-2 h:-4.70±3.42%/h vs.2-4 h:-1.89±2.97%/h;P>0.05).Finally,whereas no correlations between bull fertility and any dynamic parameter were found,there were correlations between the NRR and the basal percentage of highly-damaged sperm assessed with the alkaline Comet(Rs=-0.563,P=0.003),between NRR and basal progressive motility(Rs=0.511,P=0.009),and between NRR and sperm with high ROS at 4 h post-thaw(Rs=0.564,P=0.003).Conclusion:The statistically significant correlations found between intracellular ROS,sperm viability,sperm motility,DNA damage and chromatin deprotamination suggested a sequence of events all driven by oxidative stress,where viability and motility would be affected first and sperm chromatin would be altered at a later stage,thus suggesting that bovine sperm should be used for fertilization within 2 h post-thaw.Fertility correlations supported that the assessment of global DNA damage through the Comet assay may help predict bull fertility.Jordi Ribas‑Maynou Ariadna Delgado‑Bermúdez Yentel Mateo‑Otero Estel Vinolas Carlos O.Hidalgo WSteven Ward Marc Yeste 2023Journal of Animal Science and Biotechnology2023,14,1:0
6上止点位置时气缸内流动的简化数值方法显示文摘开发了一维数学模拟软件预测曲柄位于上止点(TC)位置、排气阀开启过程中气缸内的可压缩流动的方法。通过有限容积法在计算网格离散微分控制方程,网格根据活塞的运动增大或缩短。采用理想气体假设,利用SIMPLEC算法建立压力与速度场的耦合。软件与活塞远离上止点时适用的积分公式相结合。新的方法再现了一些不能通过积分方法获得的实验数据显示的物理特征,如加速度和摩擦引起的、沿气缸盖的压力降。F. A. Ribas Jr. Embraco Brazil Carlos J. Deschamps 刘艳品 李红旗 2007家电科技2007,,5:0
7Precision medicine in sepsis and septic shock:From omics to clinical tools显示文摘Sepsis is a heterogeneous disease with variable clinical course and several clinical phenotypes.As it is associated with an increased risk of death,patients with this condition are candidates for receipt of a very well-structured and protocolized treatment.All patients should receive the fundamental pillars of sepsis management,which are infection control,initial resuscitation,and multiorgan support.However,specific subgroups of patients may benefit from a personalized approach with interventions targeted towards specific pathophysiological mechanisms.Herein,we will review the framework for identifying subpopulations of patients with sepsis,septic shock,and multiorgan dysfunction who may benefit from specific therapies.Some of these approaches are still in the early stages of research,while others are already in routine use in clinical practice,but together will help in the effective generation and safe implementation of precision medicine in sepsis.Juan Carlos Ruiz-Rodriguez Erika P Plata-Menchaca Luis Chiscano-Camón Adolfo Ruiz-Sanmartin Marcos Pérez-Carrasco Clara Palmada Vicent Ribas Mónica Martínez-Gallo Manuel Hernández-González Juan J Gonzalez-Lopez Nieves Larrosa Ricard Ferrer 2022World Journal of Critical Care Medicine2022,11,1:0
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