Search | SciELO

RESUMEN Objetivos. Explorar la frecuencia e impacto de la violencia contra los trabajadores de salud de Argentina y compararlo con el resto de sus pares de Latinoamérica en el contexto de la pandemia por COVID-19. Materiales y métodos. Estudio de corte transversal a través de una encuesta electrónica al personal médico y no médico de Latinoamérica que desempeño tareas asistenciales desde marzo de 2020. Se utilizó una regresión de Poisson para estimar las Razones de Prevalencia crudas (RP) y ajustadas (RPa) con sus respectivos intervalos de confianza al 95%. Resultados. Un total de 3544 participantes de 19 países respondieron la encuesta; 1992 (56,0%) residían en Argentina. Entre los mismos, el 62,9% padeció al menos un hecho de violencia: 97,7% refirió violencia verbal y 11,8% violencia física. El 41,5% de los agredidos padecieron situaciones de violencia al menos una vez por semana. El personal de salud de Argentina vivenció más frecuentemente violencia que los de otros países (62,9% vs. 54,6%, p<0,001), siendo estos eventos más habituales y estresantes (p<0,05). Además, refirieron más frecuentemente haber considerado cambiar sus tareas asistenciales y/o deseos de abandonar su profesión (p<0,001). En la regresión de Poisson, los participantes de Argentina tuvieron una prevalencia de violencia mayor que los trabajadores de salud de la región (14,6%; p<0,001). Conclusiones. Existió una elevada prevalencia de violencia contra el personal de salud de Argentina durante la pandemia por COVID-19. Estos hechos tuvieron un alto impacto negativo entre quienes los padecieron. Nuestros datos sugieren que, esto podría haber sido más frecuente en Argentina respecto de otras regiones del continente.

ABSTRACT Objectives. To explore the frequency and impact of violence against healthcare workers in Argentina and to compare it with the rest of their Latin American peers during the COVID-19 pandemic. Materials and methods. A cross-sectional study was conducted by applying an electronic survey on Latin American medical and non-medical personnel who carried out health care tasks since March 2020. We used Poisson regression to estimate crude (PR) and adjusted (aPR) Prevalence Ratios with their respective 95% confidence intervals. Results. A total of 3544 participants from 19 countries answered the survey; 1992 (56.0%) resided in Argentina. Of these, 62.9% experienced at least one act of violence; 97.7% reported verbal violence and 11.8% physical violence. Of those who were assaulted, 41.5% experienced violence at least once a week. Health personnel from Argentina experienced violence more frequently than those from other countries (62.9% vs. 54.6%, p<0.001), and these events were more frequent and stressful (p<0.05). In addition, Argentinean health personnel reported having considered changing their healthcare tasks and/or desired to leave their profession more frequently (p<0.001). In the Poisson regression, we found that participants from Argentina had a higher prevalence of violence than health workers from the region (14.6%; p<0.001). Conclusions. There was a high prevalence of violence against health personnel in Argentina during the COVID-19 pandemic. These events had a strong negative impact on those who suffered them. Our data suggest that violence against health personnel may have been more frequent in Argentina than in other regions of the continent.

https://doi.org/10.17843/rpmesp.2023.402.12646

Comparación de la violencia y agresiones sufridas por el personal de salud durante la pandemia de COVID-19 en Argentina y el resto de Latinoamérica
Facebook Twitter

Other social networks
Google+
LinkedIn
Reddit
StambleUpon
CiteULike
Mendeley
Other networks

Metrics
- SciELO Analytics
- Dimensions
- PlumX
- Altmetric

Garcia-Zamora, Sebastián

; Iomini, Pablo A.

; Pulido, Laura

; Miranda-Arboleda, Andrés F.

; Lopez-Santi, Pilar

; Burgos, Lucrecia M.

; Perez, Gonzalo E.

; Priotti, Mauricio

; García, Darío E.

; Antoniolli, Melisa

; Musso, Gabriel

; Zaidel, Ezequiel J.

; Sosa-Liprandi, Álvaro

; Del-Sueldo, Mildren A.

; Lopez-Santi, Ricardo

; Vazquez, Gustavo

; Baranchuk, Adrián

Revista Peruana de Medicina Experimental y Salud Publica

Journal Metrics
- Sobre o periódico
- SciELO Analytics

apr 2023, Volume 40 N. 2 Pages 179 - 188

Abstract: En Es | Text: En Es | PDF: En | PDF: Es

https://doi.org/10.17843/rpmesp.2023.402.12646

La potencia de los espacios colectivos como estrategia frente a la vulneración de derechos
Facebook Twitter

Other social networks
Google+
LinkedIn
Reddit
StambleUpon
CiteULike
Mendeley
Other networks

Metrics
- SciELO Analytics
- Dimensions
- PlumX
- Altmetric

Baigorria, Camila Abigail

; Díaz, María Victoria

; Grondona, Lucía

; Silvester, Mónica Ailén

; Vazquez, Evelyn Ailen

; Pereira, Beatriz Prado

; Braga, Iara Falleiros

; Monzeli, Gustavo Artur

Cadernos Brasileiros de Terapia Ocupacional

Journal Metrics
- Sobre o periódico
- SciELO Analytics

2023, Volume 31 N. spe elocation e3395

Abstract: Pt En Es | Text: Pt En Es | PDF: Pt | PDF: En | PDF: Es

Resumo Propõe-se desenvolver a articulação entre as contribuições teórico-metodológicas da terapia ocupacional social e a experiência dos projetos Timbó em Movimento e ResisTO, dentro do núcleo da Rede Metuia pertencente à Universidade Federal da Paraíba, Brasil. Reconhece-se a importância das práticas territoriais e do campo da terapia ocupacional social para o fortalecimento e acompanhamento de populações com diversas condições de vulnerabilidade. Articula-se a prática dos projetos Timbó em Movimento e ResisTO com conceitos como a interseccionalidade dos marcadores sociais da diferença, suas implicações para o direito à cidade e seus efeitos no cotidiano dos jovens. Desenvolve-se a implicação dos marcadores sociais nos cotidianos dos participantes, assim como o potencial dos espaços coletivos de referência e a articulação intersetorial para o enfrentamento das violências. Conclui-se que os espaços de pertencimento têm grande relevância para o enfrentamento de conflitos no campo social, promovendo a participação dos sujeitos e o exercício da cidadania, rejeitando a tendência de buscar soluções individuais para problemas coletivos. Identifica-se o desafio de levar esses diálogos aos contextos cotidianos em que as violências ocorrem, incorporando atores que também podem estar envolvidos em sua reprodução. Propõese Propõe se teóricometodológicas teórico metodológicas Paraíba Brasil Reconhecese Reconhece vulnerabilidade Articulase Articula diferença jovens Desenvolvese Desenvolve participantes Concluise Conclui cidadania Identificase Identifica ocorrem reprodução

Abstract This paper articulates the theoretical-methodological contributions of social occupational therapy and the experience of “Timbó em Movimento'' and “ResisTO” projects, which are part of the Rede Metuia nucleus belonging to the Federal University of Paraíba (UFPB), Brazil. It recognizes the importance of territorial practices and the social occupational therapy field for the strengthening and support of populations with diverse conditions of vulnerability. Articulation of what was observed in the Timbó em Movimento and ResisTO projects with concepts such as the intersectionality of social markers of difference, their implications for the right to the city and their effects in the daily life of youths. The article elaborates the implications of social markers in the daily life of the participants, as well as the potential of collective reference spaces and intersectoral articulation to confront violence. It is concluded that the spaces of belonging have great relevance for addressing conflicts in the social field, promoting the participation of people and the exercise of citizenship, rejecting the tendency to seek individual solutions to collective problems. Remains the challenge of taking these dialogues to the daily contexts in which violence takes place, incorporating actors that may also be involved in its reproduction. theoreticalmethodological theoretical methodological Movimento' “ResisTO UFPB, UFPB , (UFPB) Brazil vulnerability difference youths participants citizenship problems place reproduction (UFPB

Resumen Se propone desarrollar la articulación entre los aportes teórico-metodológicos de la terapia ocupacional social y la experiencia de los proyectos Timbó em Movimento y ResisTO, dentro del núcleo de la Rede Metuia perteneciente a la Universidad Federal de Paraíba, Brasil. Se reconoce la importancia de las prácticas territoriales y del campo de la terapia ocupacional social para el fortalecimiento y acompañamiento a poblaciones con diversas condiciones de vulnerabilidad. Se articula lo observado en los proyectos Timbó em Movimento y ResisTO con conceptos como la interseccionalidad de los marcadores sociales de diferencia, sus implicancias en el derecho a la ciudad y sus efectos en el cotidiano de los jóvenes. Se desarrolla la implicancia de los marcadores sociales en los cotidianos de les participantes, así como el potencial de los espacios colectivos de referencia y la articulación intersectorial para enfrentar las violencias. Se concluye que los espacios de pertenencia poseen gran relevancia para el abordaje de conflictos en el campo social, potenciando la participación de les sujetes y el ejercicio de ciudadanía, rechazando la tendencia de buscar soluciones individuales a problemáticas colectivas. Se identifica el desafío de llevar estos diálogos a los contextos cotidianos en que las violencias tienen lugar, incorporando actores que también puedan estar involucrados en su reproducción. teóricometodológicos teórico metodológicos Paraíba Brasil vulnerabilidad diferencia jóvenes participantes ciudadanía colectivas lugar reproducción

https://doi.org/10.1590/2526-8910.ctoen260533953

Detection of People Positive to COVID-19 through ATR-FTIR Spectra Analysis of Saliva using Machine Learning
Facebook Twitter

Other social networks
Google+
LinkedIn
Reddit
StambleUpon
CiteULike
Mendeley
Other networks

Metrics
- SciELO Analytics
- Dimensions
- PlumX
- Altmetric

Vazquez-Zapien, Gustavo Jesús

; Mata-Miranda, Monica Maribel

; Martinez-Cuazitl, Adriana

; Guerrero-Ruiz, Melissa

; Garibay-Gonzalez, Francisco

; Sanchez-Brito, Miguel

Revista mexicana de ingeniería biomédica

Journal Metrics
- Sobre o periódico
- SciELO Analytics

dec 2022, Volume 43 N. 3 elocation 1304

Abstract: Es En | Text: Es En | PDF: Es | PDF: En

RESUMEN La COVID-19 es una enfermedad infecciosa ocasionada por el virus SARS-CoV-2. La propagación de este virus se produce principalmente a través de gotitas liberadas por la nariz o la boca de una persona infectada. Aunque se han desarrollado vacunas que permiten reducir efectivamente los efectos que esta infección viral provoca, el método más eficaz para contener la propagación del virus son las numerosas pruebas para detectar y aislar los posibles portadores. Sin embargo, el tiempo de respuesta, combinado con el costo de las pruebas reales, hace que esta opción sea poco práctica. Aquí, comparamos algunas metodologías de machine learning para proponer una estrategia confiable para detectar personas positivas a COVID-19 analizando espectros de saliva obtenidos por espectroscopia infrarroja transformada de Fourier (FTIR). Tras analizar 1275 espectros, con 7 estrategias comúnmente empleadas en el área de machine learning, concluimos que un modelo de regresión lineal multivariante (MLMR) resulta ser la mejor opción para identificar posibles infectados. De acuerdo con nuestros resultados, el desplazamiento observado en la región de la amida I del espectro, resulta fundamental y confiable para establecer una frontera a partir del cambio de pendiente que este provoca. Al ser más ágil y económica que la reacción en cadena de la polimerasa con transcriptasa inversa (RT-PCR), podría aplicarse confiablemente como estrategia preliminar a RT-PCR.

ABSTRACT COVID-19 is an infectious disease caused by the SARS-CoV-2 virus. This virus's spread is mainly through droplets released from the nose or mouth of an infected person. Although vaccines have been developed that effectively reduce the effects that this viral infection causes, the most effective method to contain the virus’s spread is numerous tests to detect and isolate possible carriers. However, the response time, combined with the cost of actual tests, makes this option impractical. Herein, we compare some machine learning methodologies to propose a reliable strategy to detect people positive to COVID-19, analyzing saliva spectra obtained by Fourier transform infrared (FTIR) spectroscopy. After analyzing 1275 spectra, with 7 strategies commonly used in machine learning, we concluded that a multivariate linear regression model (MLMR) turns out to be the best option to identify possible infected persons. According to our results, the displacement observed in the region of the amide I of the spectrum, is fundamental and reliable to establish a border from the change in slope that causes this displacement that allows us to characterize the carriers of the virus. Being more agile and cheaper than reverse transcriptase polymerase chain reaction (RT-PCR), it could be reliably applied as a preliminary strategy to RT-PCR.

https://doi.org/10.17488/rmib.43.3.5

Palmitic acid decreases cell migration by increasing RGS2 expression and decreasing SERCA expression
Facebook Twitter

Other social networks
Google+
LinkedIn
Reddit
StambleUpon
CiteULike
Mendeley
Other networks

Metrics
- SciELO Analytics
- Dimensions
- PlumX
- Altmetric

Galindo-Hernandez, Octavio

; Leija-Montoya, Ana Gabriela

; Romero-Garcia, Tatiana

; Vazquez-Jimenez, Jose Gustavo

Genetics and Molecular Biology

Journal Metrics
- Sobre o periódico
- SciELO Analytics

2021, Volume 44 N. 1 elocation e20200279

Abstract: En | Text: En | PDF: En

Abstract Palmitic acid, the main saturated fatty acid, is related with a wide range of metabolic disorders such as obesity, type 2 diabetes and heart disease. It is known that palmitic acid disturbs the expression of some important proteins for cell homeostasis such as SERCA and RGS2, however, the role of this lipid at the molecular level in these disorders is not completely elucidated. Thus, our aim was to determinate the effect of palmitic acid in a relevant cell process as it is cell migration and the participation of SERCA and RGS2 in this response. We found that palmitic acid reduces cell migration (determined by the Boyden chamber method) in an epithelial cell line (HEK293) and this effect is modulated by SERCA and RGS2 differential protein expression (measured by western blot). Also, overexpression of individual proteins, RGS2 and SERCA, produced a decrease and an increase on cell migration, respectively. Taken together, these data suggest that the expression of regulatory proteins is affected by high concentrations of saturated fatty acids and in consequence cell migration is diminished in epithelial cells.

https://doi.org/10.1590/1678-4685-gmb-2020-0279 596 downloads

Acceso al suelo urbano y riesgo ambiental. Comodoro Rivadavia, Patagonia argentina
Facebook Twitter

Other social networks
Google+
LinkedIn
Reddit
StambleUpon
CiteULike
Mendeley
Other networks

Metrics
- SciELO Analytics

Romeo, Gustavo

; Vazquez, Letizia

Bitácora Urbano Territorial

Journal Metrics
- Sobre o periódico
- SciELO Analytics

sep 2019, Volume 29 N. 2 Pages 13 - 20

Resumen La conformación urbana de Comodoro Rivadavia en la Patagonia argentina ha sido influida históricamente por la extracción de hidrocarburos, condicionando el acceso al suelo urbano. Esta ciudad responde a una crisis ambiental global que tiene como emergente al riesgo, lo cual quedó reflejado durante las precipitaciones extraordinarias acaecidas en el otoño de 2017. El presente trabajo analiza cómo las dificultades de acceso al suelo son un componente fundamental en la conformación de escenarios de riesgo ambiental. Reconociendo que estos se corresponden con sistemas complejos y en la búsqueda de miradas que confluyan en la ecología política, se pretende vincular estas dificultades con la construcción de la vulnerabilidad. El enfoque metodológico contempló la realización de entrevistas, revisión de fuentes secundarias y el abordaje interdisciplinario. A manera de conclusión, sostenemos que las dificultades de acceso al suelo generadas por la industria petrolera fueron una causa estructural del desastre ambiental.

Résumé La conformation urbaine de Comodoro Rivadavia a toujours été influencée par l'extraction d'hydrocarbures; l'accès aux terrains urbains a donc toujours été conditionné par cette activité. Cette ville répond à une crise environnementale mondiale à risque émergent, qui s'est reflétée dans les précipitations exceptionnelles de l'automne 2017. Cet article analyse en quoi les difficultés d'accès à la terre sont un élément fondamental de la formation de scénarios de risque environnemental. Reconnaissant que ceux-ci correspondent à des systèmes complexes, et dans la recherche de points de vue convergent dans l'écologie politique, il est envisagé de relier ces difficultés à la construction de la vulnérabilité. L'approche méthodologique comprenait la réalisation d'interviews, la révision de sources journalistiques et l'approche interdisciplinaire. En conclusion, nous maintenons que les difficultés d'accès à la terre générées par l'industrie pétrolière étaient une cause structurelle de la catastrophe environnementale.

Abstract The urban conformation of Comodoro Rivadavia has historically been influenced by the extraction of hydrocarbons, thus, access to urban land has always been conditioned by this activity. This city responds to a global environmental crisis that has emerging risk, which was reflected from the extraordinary rainfall in autumn 2017. This paper analyzes how the difficulties of access to land are a fundamental component in the formation of scenarios of environmental risk. Recognizing that these correspond to complex systems, and in the search for views that converge in political ecology, it is intended to link these difficulties with the construction of vulnerability. The methodological approach included conducting interviews, reviewing journalistic sources and the interdisciplinary approach. By way of conclusion, we argue that the difficulties of access to land generated by the oil industry were a structural cause of the environmental disaster.

Resumo A conformação urbana de Comodoro Rivadavia tem sido historicamente influenciada pela extração de hidrocarbonetos, assim, o acesso à terra urbana sempre foi condicionado por esta atividade. Esta cidade responde a uma crise ambiental global que tem risco emergente, o que foi refletido a partir das chuvas extraordinárias no outono de 2017. Este artigo analisa como as dificuldades de acesso à terra são um componente fundamental na formação de cenários risco ambiental. Reconhecendo que estes correspondem a sistemas complexos, e na busca por visões que convergem em ecologia política, pretende-se vincular essas dificuldades com a construção da vulnerabilidade. A abordagem metodológica incluiu a realização de entrevistas, revisão de fontes jornalísticas e a abordagem interdisciplinar. Como conclusão, argumentamos que as dificuldades de acesso à terra geradas pela indústria do petróleo foram uma causa estrutural do desastre ambiental.

358 downloads

EFFECTS OF A MULTICOMPONENT EXERCISE PROGRAM ON THE FUNCTIONAL FITNESS IN ELDERLY WOMEN
Facebook Twitter

Other social networks
Google+
LinkedIn
Reddit
StambleUpon
CiteULike
Mendeley
Other networks

Metrics
- SciELO Analytics
- Dimensions
- PlumX
- Altmetric

Suzuki, Frank Shiguemitsu

; Evangelista, Alexandre Lopes

; Teixeira, Cauê Vazquez La Scala

; Paunksnis, Marcos Rodolfo Ramos

; Rica, Roberta Luksevicius

; Evangelista, Roberta Alexandra Gonçalves de Toledo

; João, Gustavo Allegretti

; Doro, Marcio Roberto

; Sita, Douglas Mastroantonio

; Serra, Andrey Jorge

; Figueira Junior, Aylton José

; Alonso, Angélica Castilho

; Peterson, Mark

; Bocalini, Danilo Sales

Revista Brasileira de Medicina do Esporte

Journal Metrics
- Sobre o periódico
- SciELO Analytics

jan 2018, Volume 24 N. 1 Pages 36 - 39

Abstract: Pt En Es | Text: Pt En Es | PDF: Pt | PDF: En | PDF: Es

RESUMO Introdução: O envelhecimento é inevitável e irreversível, porém, com o avanço da tecnologia, a expectativa de vida está aumentando a cada ano, trazendo propostas de diversas intervenções para melhorar a qualidade de vida. Entre elas, encontram-se os programas de exercício físico. Objetivos: Investigar o impacto do treinamento multicomponente realizado em circuitos sobre os parâmetros de autonomia funcional em mulheres idosas. Métodos: Idosas foram recrutadas e distribuídas em dois grupos: treinado (N = 16) e não treinado (N = 15). As idosas do grupo treinado realizaram sessões de treino de 75 minutos, duas vezes por semana, durante um período de 56 semanas. Os exercícios resistidos abrangeram membros superiores e inferiores com intensidade relativa de 70% de 1RM, exercícios usando peso corporal, alongamento e tarefas específicas para agilidade, realizados em forma de circuito e totalizando três passagens. As participantes foram submetidas à avaliação da autonomia funcional (AF) pelo protocolo do Grupo de Desenvolvimento Latino-Americano para a Maturidade, ao teste de caminhada de seis minutos (T6M) e ao teste de sentar e alcançar (SA). Resultados: O grupo treinado teve diminuição significativa do peso corporal (p = 0,02) e do índice de massa corporal (p = 0,015). Foram observadas também melhoras significativas (p = 0,009) no AF, no SA e no T6M após a intervenção. Em comparação com o grupo não treinado, o grupo treinado também obteve diferenças significativas em todos os parâmetros funcionais analisados. Conclusão: Um programa de longa duração de treinamento multicomponente realizado em circuito e aplicado duas vezes por semana foi suficiente para melhorar múltiplos componentes da autonomia funcional de idosas. Nível de Evidência II; Estudos prognósticos - Investigação do efeito de característica de um paciente sobre o desfecho da doença.

ABSTRACT Introduction: Aging is inevitable and irreversible, but with the advancement of technology, life expectancy is increasing every year, bringing proposals for various interventions to improve the quality of life. One such intervention is physical exercise programs. Objectives: To investigate the impact of multicomponent training in circuits on functional autonomy parameters in elderly women. Methods: Elderly were recruited and distributed in two groups: trained (N = 16) and non-trained (N = 15). Those in the trained group performed 75-minute training sessions twice a week over a 56-week period. The resistance training included upper and lower limbs with a relative intensity of 70% of 1RM, exercises using body weight, stretching and specific tasks for agility, performed in a circuit form and totaling three passages. Participants underwent functional autonomy (FA) assessment by the protocol of the Latin American Developmental Group for Maturity, the 6-minute walk test (T6M), and the sit-and-reach (SR) test. Results: The trained group had a significant decrease in body weight (p=0.02) and body mass index (p=0.015). Significant improvements (p=0,009) were also observed in FA, SR, and T6M after the intervention Compared with the untrained group, the trained group also obtained significant differences in all functional parameters analyzed. Conclusion: A long-term multicomponent training program conducted on a circuit and applied twice a week was enough to improve multiple components of the functional autonomy of elderly women. Level of Evidence II; Prognostic studies - Investigating the effect of a patient characteristic on the outcome of disease.

RESUMEN Introducción: El envejecimiento es inevitable e irreversible, pero con el avance de la tecnología la expectativa de vida está aumentando cada año, trayendo propuestas de diversas intervenciones para mejorar la calidad de vida. Entre ellas, se encuentran los programas de ejercicio físico. Objetivos: Investigar el impacto del entrenamiento multicomponente realizado en circuitos sobre los parámetros de autonomía funcional en mujeres ancianas. Métodos: Las ancianas fueron reclutadas y distribuidas en dos grupos: entrenado (N = 16) y no entrenado (N = 15). Las ancianas del grupo entrenado realizaron sesiones de entrenamiento de 75 minutos, dos veces por semana, durante un período de 56 semanas. Los ejercicios resistidos abarcaron miembros superiores e inferiores con intensidad relativa del 70% de 1RM, ejercicios usando el peso corporal, estiramiento y tareas específicas para agilidad, realizados en forma de circuito y totalizando tres pasajes. Las participantes fueron sometidas a la evaluación de la autonomía funcional (AF) por el protocolo del Grupo de Desarrollo Latinoamericano para la Madurez, a la prueba de caminata de seis minutos (T6M) y a la prueba de sentarse y alcanzar (SA). Resultados: El grupo entrenado tuvo una disminución significativa del peso corporal (p = 0,02) y del índice de masa corporal (p = 0,015). Se observaron también mejoras significativas (p = 0,009) en el AF, en el SA y en el T6M después de la intervención. En comparación con el grupo no entrenado, el grupo entrenado también obtuvo diferencias significativas en todos los parámetros funcionales analizados. Conclusión: Un programa de larga duración de entrenamiento multicomponente realizado en circuito y aplicado dos veces por semana fue suficiente para mejorar múltiples componentes de la autonomía funcional entre las mujeres mayores. Nivel de Evidencia II; Estudios prognósticos - Investigación del efecto de características de un paciente sobre el desenlace de la enfermedad.

https://doi.org/10.1590/1517-869220182401179669 5360 downloads

Monitoring reinforcement corrosion of concretes designed for nuclear facilitie
Facebook Twitter

Other social networks
Google+
LinkedIn
Reddit
StambleUpon
CiteULike
Mendeley
Other networks

Metrics
- SciELO Analytics
- Dimensions
- PlumX
- Altmetric

Vazquez, Damián

; Duffó, Gustavo

Matéria (Rio de Janeiro)

Journal Metrics
- Sobre o periódico
- SciELO Analytics

2018, Volume 23 N. 2 elocation e12047

Abstract: En | Text: En | PDF: En

ABSTRACT The facilities designed for the peaceful activities of nuclear energy are made with different materials, among them, reinforced concrete. This material, in addition to being structural, is a barrier for isolation and confinement from the environment of the radioactive materials. One of its degradation mechanisms is the corrosion of the reinforcement, a frequent cause of premature failure in service. Consequently, it is essential to study this degradation mechanism in formulations developed for this purpose, as well as the development and implementation of monitoring techniques. The objective of this work is to compare, from the corrosion of reinforcement point of view, two concrete formulations, one made with ordinary portland cement and the other with pozzolanic portland cement. Both formulations are candidate for some nuclear applications, such as the Low Radioactive Waste disposal facilities, whose durability requirement is higher than 300 years. The results of approximately four years of monitoring are presented. The parameters followed are: corrosion potential and corrosion rate of the reinforcements, electrical resistivity, oxygen flow, internal temperature and carbonation rate of concrete. These parameters were measured and monitored in reinforced concrete specimens by embedded sensors previously developed in our laboratory. Also, unreinforced specimens were prepared to measure the carbonation rate. The presence of reinforcements provides the possibility of monitoring directly on them the corrosion potential, the corrosion rate and electrical resistivity of concrete, using on-surface electrodes provided by a commercial instrument. This allows the comparison of the parameters monitored by embedded sensors and the on-surface electrodes.

https://doi.org/10.1590/s1517-707620180002.0383 342 downloads

10.

Presence and diversity of arbuscular mycorrhizal fungi in soil regularly irrigated with vinasses
Facebook Twitter

Other social networks
Google+
LinkedIn
Reddit
StambleUpon
CiteULike
Mendeley
Other networks

Metrics
- SciELO Analytics

Sanchez-Lizarraga, Ana Lorena

; Dendooven, Luc

; Marino-Marmolejo, Erika Nahomy

; Davila-Vazquez, Gustavo

; Hernández-Cuevas, Laura

; Arenas-Montaño, Valeria

; Contreras-Ramos, Silvia Maribel

Journal of soil science and plant nutrition

Journal Metrics
- Sobre o periódico
- SciELO Analytics

dec 2017, Volume 17 N. 4 Pages 1116 - 1129

Abstract: En | Text: En | PDF: En

The application of organic waste products, such as vinasses, to the soil is a common practice in different countries. Vinasses are a residual liquid generated during various processes such as ethanol production and beverages distillation. However, little is known about how the vinasses affect the content and species distribution of arbuscular mycorrhizal fungi (AMF) in soils irrigated with vinasses. The aim of this research was to determine the presence, spore density and taxonomic identification of AMF to assess in vinasses irrigated (VS) and unirrigated soils (CS). Sixteen species were identified in irrigated and unirrigated soils, with a predominance of Acaulospora mellea, A. scrobiculata, Funneliformis geosporum, F. mosseae and Paraglomus occultum. Only Clareidoglomus etunicatum, Septoglomus constrictum, and Racocetra gregaria were found in VS, while A. morrowiae and Scuttelospora reticulate were only found in CS. The AMF abundance, root colonization, richness and biodiversity indices were not affected by vinasses application. It was found that irrigation of soil with vinasses seemed to have only a limited effect on AMF. To our knowledge, this is the first description of the species of AMF present in soil frequently irrigated with vinasse. This study could serve as a base for further investigations into the effect of vinasse on the soil microbial community and crop yields.

1436 downloads

11.

Morphological, molecular and FTIR spectroscopic analysis during the differentiation of kidney cells from pluripotent stem cells
Facebook Twitter

Other social networks
Google+
LinkedIn
Reddit
StambleUpon
CiteULike
Mendeley
Other networks

Metrics
- SciELO Analytics
- Dimensions
- PlumX
- Altmetric

Mata-Miranda, Monica Maribel

; Vazquez-Zapien, Gustavo Jesus

; Rojas-Lopez, Marlon

; Sanchez-Monroy, Virginia

; Perez-Ishiwara, David Guillermo

; Delgado-Macuil, Raul Jacobo

Biological Research

Journal Metrics
- Sobre o periódico
- SciELO Analytics

2017, Volume 50 elocation 14

Abstract: En | Text: En | PDF: En

Abstract Background Kidney diseases are a global health problem. Currently, over 2 million people require dialysis or transplant which are associated with high morbidity and mortality; therefore, new researches focused on regenerative medicine have been developed, including the use of stem cells. Results In this research, we generate differentiated kidney cells (DKCs) from mouse pluripotent stem cells (mPSCs) analyzing their morphological, genetic, phenotypic, and spectroscopic characteristics along differentiation, highlighting that there are no reports of the use of Fourier transform infrared (FTIR) spectroscopy to characterize the directed differentiation of mPSCs to DKCs. The genetic and protein experiments proved the obtention of DKCs that passed through the chronological stages of embryonic kidney development. Regarding vibrational spectroscopy analysis by FTIR, bands related with biomolecules were shown on mPSCs and DKCs spectra, observing distinct differences between cell lineages and maturation stages. The second derivative of DKCs spectra showed changes in the protein bands compared to mPSCs. Finally, the principal components analysis obtained from FTIR spectra allowed to characterize chemical and structurally mPSCs and their differentiation process to DKCs in a rapid and non-invasive way. Conclusion Our results indicated that we obtained DKCs from mPSCs, which passed through the chronological stages of embryonic kidney development. Moreover, FTIR spectroscopy resulted in a non-invasive, rapid and precise technic that together with principal component analysis allows to characterize chemical and structurally both kind of cells and also discriminate and determine different stages along the cell differentiation process.

https://doi.org/10.1186/s40659‑017‑0119‑6 830 downloads

12.

HACCP en plantas artesanales pequeñas y medianas dedicadas a la producción de hortalizas de IV y V Gama
Facebook Twitter

Other social networks
Google+
LinkedIn
Reddit
StambleUpon
CiteULike
Mendeley
Other networks

Metrics
- SciELO Analytics

Vazquez-Armenta, F Javier

; Ayala-Soto, Rosa E

; Cruz-Valenzuela, M

; González-Aguilar, Gustavo A

; Ayala-Zavala, J Fernando

Agrociencia (Uruguay)

Journal Metrics
- Sobre o periódico
- SciELO Analytics

dec 2016, Volume 20 N. 2 Pages 1 - 6

Abstract: Es En | Text: Es En | PDF: Es | PDF: En

La oferta de alimentos frescos mínimamente procesados está creciendo, por lo que resulta indispensable que dichos productos puedan ser utilizados sin riesgos para la salud de los consumidores. Estos riesgos pueden repercutir no solamente en serios efectos en la salud del hogar y en la productividad de las empresas, sino incluso en responsabilidades legales de las empresas productoras. El número de plantas de procesamiento de hortalizas en las diferentes escalas se ha incrementado durante los últimos años en muchos países. Al mismo tiempo, los productos vegetales frescos han sido implicados en diferentes investigaciones como principal fuente de infección. Además, la manipulación durante el procesamiento y la falta de tratamientos térmicos hace que los puntos de control del riesgo en su proceso sean difíciles de establecer. Es por eso que en esta revisión se destaca la importancia de la implementación de programas efectivos como las buenas prácticas de manufactura (BPM), los procedimientos estándares operativos de saneamiento (PEOS) y el análisis de peligros y puntos críticos de control (HACCP) que ayuden a asegurar la inocuidad de estos alimentos.

The supply of minimally processed fresh foods is growing, so it is essential that the products can be used without risk to the health of consumers. Such risks can result not only in serious effects on home health and business productivity, but even in legal responsibilities for producers. The number of vegetable processing plants in different scales has increased in recent years in many countries. At the same time, fresh plant products have been involved in various researches as the main source of infection. Also, handling during processing and lack of heat treatment turn risk control points during the process difficult to establish. For this reason, this review highlights the importance of effective programs implementing Good Manufacturing Practices (GMP), Sanitation Standar Operating Procedures (SSOP) and Hazard Analysis and Critical Control Point (HACCP) which aid in assuring the safety of these foods.

3157 downloads

13.

Effects of dietary mannan oligosaccharide on the growth, survival, intestinal morphometry and nonspecific immune response for Siamese fighting fish (Betta splendens Regan, 1910) larvae
Facebook Twitter

Other social networks
Google+
LinkedIn
Reddit
StambleUpon
CiteULike
Mendeley
Other networks

Metrics
- SciELO Analytics
- Dimensions
- PlumX
- Altmetric

Azevedo, Rafael Vieira de

; Silva-Azevedo, Dayane Kelly da

; Santos-Júnior, João Marcos dos

; Fosse-Filho, João Carlos

; Andrade, Dalcio Ricardo de

; Tavares-Braga, Luís Gustavo

; Vidal-Júnior, Manuel Vazquez

Latin american journal of aquatic research

Journal Metrics
- Sobre o periódico
- SciELO Analytics

sep 2016, Volume 44 N. 4 Pages 800 - 806

Abstract: En Es | Text: En Es | PDF: En | PDF: Es

A 28-day experiment was carried out to evaluate the effect of dietary prebiotic mannan oligosaccharide (MOS) on the growth, survival, intestinal morphometry and nonspecific immune response of the Siamese fighting fish (Betta splendens Regan, 1910) larvae. The MOS supplementation levels evaluated was: 0, 2, 4 and 6 g kg-1. Into 16 plastic aquaria (3 L) 240 larvae (4.21 ± 0.26 mm) were distributed at a density of 5 larvae L-1. All larvae received live food for seven days, followed by a period of eight days of co-feeding (live food + inert diet) and, finally, 13 days of inert diet. At the end of feeding-trial, there were no significant differences between growth, survival, intestinal morphometry and alkaline phosphatase activity of larvae fed the control or MOS supplemented diets. However, the lysozyme activity in larvae fed 2 g MOS kg-1 was significantly higher compared to other treatments. For fish farming, the most beneficial effects of prebiotics reside in its ability to enhance the immune system of fish. In this context, this study revealed that, although the MOS supplementation has no effect on growth, survival and intestinal morphometry, 2 g MOS kg-1 supplementation for B. splendens larvae hint at a possible immunomodulatory effect, as evidenced by the increase in lysozyme activity.

Se realizó un experimento de 28 días para evaluar el efecto de la suplementación dietética con el prebiótico manano oligosacáridos (MOS) para larvas de peces luchadores siameses (Betta splendens Regan, 1910) sobre el crecimiento, la supervivencia, la morfología intestinal y la respuesta inmune inespecífica. Los niveles de suplementación fueron: 0, 2, 4, y 6 g kg-1. Se distribuyeron 240 larvas (4,21 ± 0,26 mm) en 16 acuarios de plástico (3 L) a una densidad de 5 larvas L-1. Todas las larvas recibieron alimento vivo durante siete días, seguido de un período de ocho días de co-alimentación (alimento vivo + dieta inerte) y, finalmente, 13 días de dieta inerte. Al final de la prueba de alimentación, no hubo diferencias significativas en el crecimiento, supervivencia, morfología intestinal y actividad de la fosfatasa alcalina entre las larvas alimentadas con la dieta control y las alimentadas con dietas suplementadas con MOS. Sin embargo, la actividad de la lisozima en las larvas alimentadas con 2 g MOS kg-1 fue significativamente mayor en comparación con los otros tratamientos. Para el cultivo de peces, los efectos más beneficiosos de los prebióticos residen en su capacidad para mejorar el sistema inmune de los peces. En este contexto, el presente estudio mostró que, a pesar de la administración del prebiótico MOS no tiene ningún efecto sobre el crecimiento, supervivencia y morfología intestinal, el suplemento con 2 g MOS kg-1 para larvas de B. splendens sugiere un posible efecto inmunomodulador, como se demuestra por el aumento de actividad de la lisozima.

https://doi.org/10.3856/vol44-issue4-fulltext-15 958 downloads

14.

Valor prognóstico da disfunção ventricular diastólica em pacientes com sepse grave e choque séptico
Facebook Twitter

Other social networks
Google+
LinkedIn
Reddit
StambleUpon
CiteULike
Mendeley
Other networks

Metrics
- SciELO Analytics
- Dimensions
- PlumX
- Altmetric

Rolando, Gustavo

; Espinoza, Emilio Daniel Valenzuela

; Avid, Emelin

; Welsh, Sebastián

; Pozo, Juan Del

; Vazquez, Alejandro Risso

; Arzani, Yanina

; Masevicius, Fabio Daniel

; Dubin, Arnaldo

Revista Brasileira de Terapia Intensiva

Journal Metrics
- Sobre o periódico
- SciELO Analytics

dec 2015, Volume 27 N. 4 Pages 333 - 339

Abstract: Pt En | Text: Pt En | PDF: Pt | PDF: En

RESUMO Objetivo: Avaliar a prevalência de disfunção miocárdica e seu valor prognóstico em pacientes com sepse grave e choque séptico. Métodos: Pacientes sépticos adultos, admitidos em uma unidade de terapia intensiva, foram estudados de forma prospectiva por meio de ecocardiografia transtorácica dentro das primeiras 48 horas após sua admissão e, então, entre o sétimo e o décimo dias. As variáveis ecográficas de função biventricular, inclusive a relação E/e', foram comparadas entre sobreviventes e não sobreviventes. Resultados: Foi realizado um total de 99 ecocardiogramas (53 na admissão e 46 entre os dias 7 e 10) em 53 pacientes com média de idade de 74 anos (desvio padrão de 13 anos). Estava presente disfunção sistólica em 14 (26%); disfunção diastólica foi observada em 42 (83%) pacientes; e ambos os tipos de disfunção estavam presentes em 12 (23%) pacientes. A relação E/e', ou índice de disfunção diastólica, foi o melhor preditor de mortalidade hospitalar segundo a área sob a curva ROC (0,71) e se constituiu em um preditor independente do desfecho, conforme determinado pela análise multivariada (odds ratio - OR = 1,36 [1,05 - 1,76]; p = 0,02). Conclusão: Em pacientes sépticos admitidos em uma unidade de terapia intensiva, a disfunção sistólica determinada ecograficamente não se associa com aumento da mortalidade. Em contraste, a disfunção diastólica foi um preditor independente do desfecho.

ABSTRACT Objectives: To evaluate the prevalence of myocardial dysfunction and its prognostic value in patients with severe sepsis and septic shock. Methods: Adult septic patients admitted to an intensive care unit were prospectively studied using transthoracic echocardiography within the first 48 hours after admission and thereafter on the 7th-10th days. Echocardiographic variables of biventricular function, including the E/e' ratio, were compared between survivors and non-survivors. Results: A total of 99 echocardiograms (53 at admission and 46 between days 7 - 10) were performed on 53 patients with a mean age of 74 (SD 13) years. Systolic and diastolic dysfunction was present in 14 (26%) and 42 (83%) patients, respectively, and both types of dysfunction were present in 12 (23%) patients. The E/e' ratio, an index of diastolic dysfunction, was the best predictor of hospital mortality according to the area under the ROC curve (0.71) and was an independent predictor of outcome, as determined by multivariate analysis (OR = 1.36 [1.05 - 1.76], p = 0.02). Conclusion: In septic patients admitted to an intensive care unit, echocardiographic systolic dysfunction is not associated with increased mortality. In contrast, diastolic dysfunction is an independent predictor of outcome.

https://doi.org/10.5935/0103-507X.20150057 3458 downloads

15.

Possible role of bacteria in the degradation of macro algae Desmarestia anceps Montagne (Phaeophyceae) in Antarctic marine waters
Facebook Twitter

Other social networks
Google+
LinkedIn
Reddit
StambleUpon
CiteULike
Mendeley
Other networks

Metrics
- SciELO Analytics
- Dimensions
- PlumX
- Altmetric

Quartino, María L.

; Vazquez, Susana C.

; Latorre, Gustavo E.J.

; Mac Cormack, Walter P

Revista argentina de microbiología

Journal Metrics
- Sobre o periódico
- SciELO Analytics

sep 2015, Volume 47 N. 3 Pages 274 - 276

Abstract: En | Text: En | PDF: En

https://doi.org/10.1016/j.ram.2015.04.003 144 downloads

Showing

itens per page

Page of 2 Next

Select one or more results

All Alphabetic

Results

Comparative chart Download CSV

Statistics of

Send result

To*

Use ; (semicolon) to insert more emails.

Send to email

This page

Selected records

All references (max. 300)

Your email

Subject

Comments

Export format:

RIS (for EndNote, ProCite, Reference Manager, RefWorks, Citavi, etc.)

BibTeX

Citation

CSV (for Excel, etc)

Export:

This page

Selected itens

All references (max. 2000)

Sem resultados

No documents were found for your search

Glossary and search help

You can enrich your search in a very simple way. Use the search indexes combined with the connectors (AND or OR) and specify more your search.

For example, if you want to search for articles about
cases of dengue in Brasil in 2015, use:
ti:dengue and publication_year:2015 and aff_country:Brasil

See below the complete list of search indexes that can be used:

Index code	Element
ti	article title
au	author
kw	article keywords
subject	subject (title words, abstract and keywords)
ab	abstract
ta	journal short title (e.g. Cad. Saúde Pública)
journal_title	journal full title (e.g. Cadernos de Saúde Pública)
la	publication language code (e.g. pt - Portuguese, es - Spanish)
type	document type
pid	publication identifier
publication_year	publication year of publication
sponsor	sponsor
aff_country	country code of the author's affiliation
aff_institution	author affiliation institution
volume	article volume
issue	article issue
elocation	elocation
doi	DOI number
issn	journal ISSN
in	SciELO colection code (e.g. scl - Brasil, col - Colômbia)
use_license	article usage license code

SciELO - Scientific Electronic Library Online
Rua Dr. Diogo de Faria, 1087 – 9º andar – Vila Clementino 04037-003 São Paulo/SP - Brasil
Email: scielo@scielo.org

All the contents of this site www.scielo.br, except where otherwise noted, is licensed under a Creative Commons Attribution License.
more »