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Fungal contamination of stored automobile-fuels in a tropical environment

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Journal of Environmental Sciences 2010年第10期22卷 1595-1601页

作者： Carlos E.rodríguez-rodríguez Evelyn rodríguez Rigoberto Blanco Ivannia Cordero Daniel Segura Research Center in Tropical Diseases and Laboratory of Research in Anaerobic Bacteriology Faculty of MicrobiologyUniversity of Costa Rica Department of Chemical Engineering School of EngineeringAutonomous University of Barcelona Research Center in Electrochemistry and Chemical Energy University of Costa Rica

Because of the lack of reports, the base levels of microbial contamination on stored fuels are unknown in tropical regions and it is unclear whether these levels have some influence on fuel quality parameters. Therefore, fungal quality in automobile fuels stored across Costa Rican territory was evaluated during two years according to the standard ASTM D6974-04. For a total of 96 samples, counts and identification of molds and yeasts were performed on regular gas, premium gas and diesel taken from the bottom and superior part of the container tanks. The highest contamination was found on the bottom of the tanks, where an aqueous phase was usually identified, showing populations over the ones present in the hydrocarbon itself （up to 108 CFU/L）. Diesel was the most contaminated fuel （up to 107 CFO/L）; however, an alteration on the physicochemical parameters was not observed in any kind of fuel. Seventy-five mold strains were isolated, Penicillium sp. being the most common genus （45.8% of the samples）, and ten yeast strains, from the genera Candida sp. and Rhodotorula sp. Four of the yeasts were able to grow on diesel as the sole carbon source, at concentrations ranging from 0.5% to 25%. Increasing the frequency of tank cleaning, adding antimicrobial agents and monitoring microbial populations are recommended strategies to improve microbial quality of stored fuels.

关键词： fuel microbial contamination biodegradation molds yeasts

Origin and evolution of the genera Lonsdaleia and Actinocyathus:Insights for the Mississippian palaeogeography from the western Palaeotethys

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Journal of Palaeogeography 2023年第2期12卷 296-310页

作者： Isabel rodríguez-Castro Ian D.Somerville Sergio rodríguez Departamento de geodinamica Estratigrafía y PaleontologíaUniversidad Complutense de Madrid28040MadridSpain UCD School of Earth Sciences University College DublinBelfieldDublin 4Ireland Instituto de geociencias(CSIC UCM)Ciudad Universitaria28040MadridSpain

Representatives of the subfamily Lonsdaleiinae Chapman,1893 are common in the Mississippian of the western Palaeotethys.A general analysis of the origin,distribution and evolution of that subfamily has been *** most probable hypothesis for the origin of the genus Lonsdaleia McCoy,1849 is to acquire colonialism via the genus Axophyllum Milne Edwards and Haime,*** d'Orbigny,1849 would be a descendant of Lonsdaleia by increasing integration in the *** first occurrences of Lonsdaleia have been recorded in the lower Visean from northern Britain and northern Tianshan Mountains of northwestern China,but the diversification and migration to the whole Palaeotethys only happened in the late *** hypotheses are proposed on that *** Serpukhovian was also a period of migrations and diversification for these *** Lonsdaleia and Actinocyathus have been recorded in Bashkirian refuges,the Sverdrup Basin in northern Laurasia and the Tindouf Basin in northern Africa,*** division of the western Palaeotethys into six subprovinces based on the distribution of corals is proposed.

关键词： Carboniferous Palaeotethys Biogeography Evolution Rugosa

Complexity of adaptive testing in scenarios defined extensionally

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Frontiers of Computer Science 2023年第3期17卷 11-28页

作者： Ismael rodrÍguez David RUBIO Fernando RUBIO Dpto.Sistemas Informáticos y Computación Facultad de InformáticaUniversidad Complutense de MadridMadrid 28040Spain Instituto de Tecnologías del Conocimiento Universidad Complutense de MadridMadrid 28040Spain Instituto de Biomecánica de Valencia.Universitat Politècnica de València València 46022Spain

In this paper,we consider a testing setting where the set of possible definitions of the Implementation Under Test(IUT),as well as the behavior of each of these definitions in all possible interactions,are extensionally defined,i.e.,on an element-by-element and case-by-case *** this setting,the problem of finding the minimum testing strategy such that collected observations will necessarily let us decide whether the IUT is correct or not(i.e.,whether it necessarily belongs to the set of possible correct definitions or not)is studied in four possible problem variants:with or without non-determinism;and with or without more than one possible definition in the sets of possible correct and incorrect *** computational complexity of these variants is studied,and properties such as PSPACE-completeness and Log-APX-hardness are identified.

关键词： formal testing adaptive testing computational complexity PSPACE-completeness approximation hardness

Current approach to treatment of minimal hepatic encephalopathy in patients with liver cirrhosis

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World Journal of gastroenterology 2021年第22期27卷 3050-3063页

作者： Segundo Moran Marlene López-Sánchez María del Pilar Milke-garcía gustavo rodríguez-leal Laboratory of Hepatology Research Centro Médico NacionalSiglo XXIMexican Institute of Social SecurityMexico City 06720Mexico Division of Nutrition National Institute of NutritionSalvador ZubiránMexico City 14080Mexico

Minimal hepatic encephalopathy(MHE)corresponds to the earliest stage of hepatic encephalopathy(HE).MHE does not present clinically detectable neurological-psychiatric abnormalities but is characterized by imperceptible neurocognitive alterations detected during routine clinical examination via neuropsychological or psychometrical *** may affect daily activities and reduce job performance and quality of *** can increase the risk of accidents and may develop into overt encephalopathy,worsening the prognosis of patients with liver *** a lack of consensus on the therapeutic indication,interest in finding novel strategies for prevention or reversion has led to numerous clinical trials;their results are the main objective of this *** studies address the treatment of MHE,which is mainly based on the strategies and previous management of overt *** alternatives for the management of MHE include measures to maintain nutritional status while avoiding sarcopenia,and manipulation of intestinal microbiota with non-absorbable disaccharides such as lactulose,antibiotics such as rifaximin,and administration of different *** review analyzes the results of clinical studies that evaluated the effects of different treatments for MHE.

关键词： Minimal hepatic encephalopathy Sarcopenia Probiotics Non-absorbable disaccharides,Rifaximin L-ornithine-L-aspartate

Observation of performance measures of STEMI in elderly after implementation of an updated protocol:results from a single center without coronary interventions

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Journal of geriatric Cardiology 2022年第11期19卷 930-936页

作者： Miguel rodríguez-Ramos general Hospital Camilo Cienfuegos Bartolome Maso and Mirto Streets Sancti SpiritusCuba

As life expectancy increases,heart conditions,and especially acute coronary syndromes(ACS),are becoming a greater health issue.[1-3]Accordingly,the number of elderly patients in registries of myocardial infarction,is increasingly growing.[4,5]However,elderly patients are less likely to be treated with invasive strategy compared to younger patients,despite their intrinsic greater risk.[6,7]Several reports have described how quality initiatives improve treatment of ST elevation myocardial infarction(STEMI).

关键词： coronary STEMI Observation

Digital Social Connectedness as a Lifeline for Older People: Use and Non-use of VinclesBCN During the Pandemic

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International Journal of Disaster Risk Science 2024年第2期15卷 251-264页

作者： Israel rodríguez‑giralt Daniel López‑gómez Roser Beneito‑Montagut CareNet IN3Universitat Oberta de Catalunya08018 BarcelonaSpain School of Social Sciences Cardif UniversityCardif CF103NSWalesUK

This article presents the results of a study that evaluated VinclesBCN during COVID-19. This digital-based public social service aims to prevent loneliness and isolation in +65-year-old adults living in Barcelona. Through service user(N = 12) and professional(N = 6) interviews and a questionnaire with service users(N = 255), we demonstrate the pivotal role of digital connectedness in transforming VinclesBCN into a lifeline during the pandemic. The analysis revealed the importance of sociability, social support, and, especially, entertainment in coping with pandemic fatigue and facilitating social connectivity and support among users. Users engaged in activities such as sharing images, songs, memes, and daily greetings to provide proximity, sociability, and care among users, whether they belonged to preexisting groups or were newly introduced to the platform. It also facilitated the identification of individuals who needed companionship, comfort, or more specialized support. The findings emphasize the significance of entertainment as a resilience-building strategy during times of uncertainty. Despite the positive impact, not all users equally used the platform. Non-use was strongly associated with being a woman, having a low educational level, having preexisting social relationships, less time of enrolment in the platform, as well as a high perception of loneliness, poor self-reported health, and low mood. The article underscores the need for further research into older adults' digital engagement during crises, its role in building resilience, and advocating for inclusive digital interventions that take into account diverse older adults' needs and experiences in crisis contexts.

关键词： Barcelona COVID-19 pandemic Digital social connectedness Entertainment Older adult resilience Public digital service

Non-human primate pluripotent stem cells for the preclinical testing of regenerative therapies

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Neural Regeneration Research 2022年第9期17卷 1867-1874页

作者： Ignacio rodríguez-Polo Rüdiger Behr Research Platform Degenerative Diseases German Primate Center-Leibniz Institute for Primate ResearchGöttingenGermany german Center for Cardiovascular Research(DZHK) Partner Site GöttingenGöttingenGermany

Non-human primates play a key role in the preclinical validation of pluripotent stem cell-based cell replacement *** stem cells used as advanced therapy medical products boost the possibility to regenerate tissues and organs affected by degenerative ***,the methods to derive human induced pluripotent stem cell and embryonic stem cell lines following clinical standards have quickly developed in the last 15 *** the preclinical validation of cell replacement therapies in non-human primates,it is necessary to generate non-human primate pluripotent stem cell with a homologous quality to their human ***,pluripotent stem cell technologies have developed at a slower pace in non-human primates in comparison with human cell *** recent years,however,relevant progress has also been made with non-human primate pluripotent stem *** review provides a systematic overview of the progress and remaining challenges for the generation of non-human primate induced pluripotent stem cells/embryonic stem cells for the preclinical testing and validation of cell replacement *** focus on the critical domains of(1)reprogramming and embryonic stem cell line derivation,(2)cell line maintenance and characterization and,(3)application of non-human primate pluripotent stem cells in the context of selected preclinical studies to treat cardiovascular and neurodegenerative disorders performed in non-human primates.

关键词： embryonic stem cells induced pluripotent stem cells non-human primates pluripotent stem cells preclinical regeneration reprogramming translational research

MYC and gastric adenocarcinoma carcinogenesis

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World Journal of gastroenterology 2008年第39期14卷 5962-5968页

作者： Danielle Queiroz Calcagno Mariana Ferreira leal Paulo Pimentel Assumpo Marília de Arruda Cardoso Smith Rommel rodríguez Burbano Human Cytogenetics Laboratory Biology Science InstituteFederal University of ParáBelém PA 66075-900Brazil genetics Division Department of Morphology and GeneticsFederal University of So PauloSo Paulo SP 04023-900Brazil Joo de Barros Barreto University Hospital Federal University of ParáBelém PA 66073-000Brazil

MYC is an oncogene involved in cell cycle regulation, cell growth arrest, cell adhesion, metabolism, ribosome biogenesis, protein synthesis, and mitochondrial function. It has been described as a key element of several carcinogenesis processes in humans. Many studies have shown an association between MYC deregulation and gastric cancer. MYC deregulation is also seen in gastric preneoplastic lesions and thus it may have a role in early gastric carcinogenesis. Several studies have suggested that amplification is the main mechanism of MYC deregulation in gastric cancer. In the present review, we focus on the deregulation of the MYC oncogene in gastric adenocarcinoma carcinogenesis, including its association with Helicobacterpylori （Hpylon] and clinical applications.

关键词： MYC gastric adenocarcinoma gastric preneoplastic lesions gastric carcinogenesis Helicobacter pylori

Boosting hydrogen and chemicals production through ethanol electro-reforming on Pt-transition metal anodes

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Journal of Energy Chemistry 2022年第7期31卷 394-406,I0011页

作者： Alberto rodríguez-gómez Fernando Dorado Paula Sánchez Ana Raquel de la Osa Chemical Engineering Department Faculty of Chemical Sciences and TechnologyUniversity of Castilla-La Mancha

The aim of this work is to boost the combined hydrogen and added-values compounds generation(acetaldehyde, acetic acid and ethyl acetate) through ethanol electrochemical reforming using bimetallic anodes. In particular, the influence of the secondary metal on the electrochemical performance as well as on the product distribution was studied. For that purpose, Pt X/C electrocatalysts(where X corresponds to Cu, Co, Ni and Ru) were synthesized by the modified polyol method and tested in both half-cell and proton exchange membrane(PEM) cell configurations. Characterization results showed that incorporation of Ni and Co into the Pt matrix enhances the morphological properties of the material, providing smaller crystallite sizes, higher active surface areas and hence, better dispersion when comparing to Ru and Cu-based electrocatalysts. Ethanol oxidation reaction(EOR) was evaluated by cyclic, linear voltammetry and chronopotentiometry assays. Pt Co/C and Pt Ni/C exhibited the highest electrocatalytic activity at high polarization levels, which translate into an improvement of more than 30%(up to 1050 m A cm^(-2)) in the hydrogen production and chemical yields. On the other hand, Pt Ru/C results more advantageous for a lower potential interval(g the acetic acid production despite sacrificing ethanol conversion. Pt Cu/C presented the lowest results in both electrochemical performance and product distribution. Such differences in the electrochemical performance can be rationalized in terms of the synergistic effect between both metals(particle size distribution, grade of dispersion and hydrophilic behavior), which demonstrate that the incorporation of a different secondary metal plays an essential role in the EOR development.

关键词： Ethanol electrochemical reforming Bimetallic anodic electrocatalysts PEM cell High current performance Hydrogen Chemicals production