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247篇 您的检索式:作者名="Campelo"
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1Carbonaceous residues from biomass gasification as catalysts for biodiesel production显示文摘Tars and alkali ashes from biomass gasification processes currently constitute one of the major problems in biomass valorisation,generating clogging of filters and issues related with the purity of syngas production.To date,these waste residues find no useful applications and they are generally disposed upon generation in the gasification process.A detailed analysis of these residues pointed out the presence of high quantities of Ca(>30 wt%).TG experiments indicated that a treatment under air at moderate temperatures(400-800 C) decomposed the majority of carbon species,while XRD indicated the presence of a crystalline CaO phase.CaO enriched valorized materials turned out to be good heterogeneous catalysts for biodiesel production from vegetable oils,providing moderate to good activities(50%-70% after 12 h) to fatty acid methyl esters in the transesterification of sunflower oil with methanol.Rafael Luque Antonio Pineda Juan C. Colmenares Juan M. Campelo Antonio A. Romero Juan Carlos Serrano-Ruiz Luisa F. Cabeza Jaime Cot-Gores 2012Journal of Natural Gas Chemistry2012,21,3:4
2Inflammatory bowel disease in an underdeveloped region of Northeastern Brazil显示文摘AIM: To evaluate the demographic characteristics and clinical phenotypes of inflammatory bowel disease(IBD) in a geographic area in Northeastern Brazil.METHODS: This retrospective study was conducted at the Hospital of the Federal University of Piauí in Northeastern Brazil. Demographic characteristics and clinical phenotypes of IBD were analyzed in relation to the time of diagnostic confirmation, which was defined as the date of disease onset. Data were collected between January 2011 and December 2012 and included all census patients 18 years of age or older during that period for whom there was diagnostic confirmation of Crohn's disease(CD), ulcerative colitis(UC), or unclassified colitis according to the Montreal criteria. We also analyzed the period of time between the onset of clinical manifestations and the diagnosis of IBD(delay in the diagnosis). Statistical analyses included means and standard deviations for numeric variables and the Pearson χ2 adherence test for nominal variables. The annual index occurrence and overall prevalence of IBD at our institution were also calculated, with P values < 0.05 indicating statistical significance. This study was approved by the Institutional Ethics and Research Committee.RESULTS: A total of 252 patients with IBD were included, including 152(60.3%) UC patients and 100(39.7%) CD patients. The clinical and demographic characteristics of all patients with IBD showed a female to male ratio of 1.3:1.0 and a mean age of35.2(SD = 14.5) years. In addition, the majority of patients were miscegenated(171, 67.9%), had received higher education(157, 62.4%), lived in urban areas(217, 86.1%), and were under the age of 40 years(97, 62.5%). For patients with CD, according to the Montreal classification, the predominant features present from the onset of disease were an age between 17 and 40 years(A2); colonic disease location(L2); and nonstricturing, nonfistulizing disease behavior(B1). However, approximately one-quarter of all CD patients demonstrated perineal involvement. We also observed considerable delay in the diagnosis of IBD throughout the entire study period(mean = 35.5 mo). In addition, the annual index occurrence rose from 0.08 to 1.53 cases/105 inhabitants/year during the study period, and the prevalence rate was 12.8 cases/105 inhabitants in 2012. Over the last two decades, there was a noted increase in the frequency of IBD in the study area.CONCLUSION: In this study, there was a predominance of patients with UC, young people under 40 years of age, individuals with racial miscegenation, and low annual incomes.José Miguel Luz Parente Claudio Saddy Rodrigues Coy Viriato Campelo Mírian Perpétua Palha Dias Parente Leonardo Araújo Costa Renata Mendes da Silva Celso Stephan José Murilo Robilotta Zeitune 2015World Journal of Gastroenterology2015,21,4:3
3Liquid phase hydrogenation of 1-alkenes over Rh/AlPO4 and Rh/sepiolite catalysts显示文摘Cabello J A Campelo J M Garcia A 1993J Mol Catal1993,78,:1
4Studies of catalyst deactivation in methanol conversion with high medium and small pore silicoaluminophosphates显示文摘Campelo J M Lafont F Marinas J M 2000Appl Catal A2000,192,:1
5Nosocomial infec- tion:study of prevalence at a public teaching hospital 显示文摘Moura ME Campelo SM de Brito FC 2007Rev Bras Enferm2007,60,4:1
6Nosocomial infection: study of prevalence at a public teaching hospital显示文摘Moura ME Campelo SM de Brito FC 2007Rev Bras Enferm2007,60,4:1
7Age-dependent responses of tree-ring growth and intra-annual density fluctuations of Pinus pinaster to Mediterranean climate 显示文摘Vieira J Campelo F Nabais C 2009Trees2009,23,2:1
8Enteral nutrition supplemented with L - glutamine in patients with sys- temic inflammatory response syndrome due to pulmonary infection 显示文摘Cavalcante AA Campelo MW de Vascocelos rap 2012Nutrition2012,28,4:1
9Studies of catalyst deactivation in methanol conversion with high medium and small pore silicoaluminophosphates显示文摘Campelo J M Lafont F Marinas J M 2000Appl Catal A2000,192,1:1
10Design and development of catalysts for biomass-to-liquid-Fischer- Tropsch (BTL-FT) processes for biofuels production显示文摘Luque R de la Osa A R Campelo J M 2012Energy & Environmental Science2012,5,1:1
11Catechol O-methylation with dimethyl carbonate over different acid-base catalysts 显示文摘Luque R Campelo J M Conesa T D 2006New Journal of Chemistry2006,30,:1
12Comparison of the activity and selectivity of Pt/SAPO-5 and Pt/SAPO-11 in n-hexane and n-heptane hydroconversion显示文摘 Lafont F Marinas J M 1997Appl Catal A:1997,152,1:1
13Survival of AIDS patientsand characteristics of those who died over eight years of highly activeantiretroviral therapy, at a referral center in northeast Brazil 显示文摘Melo LS Lacerda HR Campelo E 2008TheBrazilian Journal of Infectious Diseases2008,12,4:1
14Biofuels: a technological perspective 显示文摘LUQUE R HERRERO-DAVILA L CAMPELO J M 2008En- ergy Environ Sci2008,5,1:1
15Tree-ring growth and intra-annual density fluctuations of Pinus pinaster responses to climate: does size matter 显示文摘Campelo F Vieira J Nabais C 2013Trees2013,27,3:1
16Knoevenagel condensation in heterogeneous phase using A1PO4 - AlzOs as a new catalyst显示文摘Cabello J A Campelo J M Garcia A 1984J Org Chem1984,49,26:1
17Acidity and catalytic activity of AlPO4-B2O3 and Al2O3-B2O3 (5-30% B2O3) systems prepared by impregnation显示文摘BAUTISTA F M CAMPELO J M GARCIA A LUNA D MARINAS J M MORENO M C ROMERO A A 1998Appl Catal A: Gen1998,170,1:1
18Efficacy of rituximab in an aggressive form of multicentric Castleman disease associated with immune phenomena 显示文摘Ocio EM Sanchez - Guijo FM Diez - Campelo M 2005Am J Hematol2005,78,:1
19A computational study of global algorithms for linear bilevel programming显示文摘de Saboia C H M Campelo M Scheimberg S 2004Numerical Algorithms2004,35,24:1
20Flapless implant surgery:A 10 years clinical retrospective analysis显示文摘 Camara JR 2002Int J Oral Maxillofac Implants2002,17,2:1
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