791 research outputs found
Risk factors and demographics for microtia in South America: a case-control analysis
BACKGROUND: The etiopathogenesis of microtia is still unknown in the majority of the cases, particularly for individuals presenting with isolated microtia. Our aim was to evaluate potential risk factors for this condition using a case–control approach. METHODS: We analyzed data from 1,194 live births with isolated microtia enrolled in the ECLAMC study (Estudio Colaborativo Latino Americano de Malformaciones Congénitas) from 1982 to 2011 and their respective controls. Odds ratios (ORs) were estimated with logistic regression models along with 95% confidence intervals for the resulting OR estimates controlling for the effects of potential confounders (sex, maternal age, hospital, and year of birth) for an adjusted OR (aOR). RESULTS: Multiparity was associated with a higher risk of microtia compared with primiparity (aOR, 1.5; 95% confidence interval [CI], 1.2–1.8), with women who had eight or more prior pregnancies having the highest risk (aOR, 2.8; 95% CI, 1.6–5.2). Women who presented with cold-like symptoms were at higher risk for microtia (aOR, 2.2; 95% CI, 1.2–3.9) as well as those that used tobacco or alcohol during pregnancy (aOR, 1.7; 95% CI, 1.1–2.6 and aOR, 1.4; 95% CI, 0.9–2.1, respectively). The association with alcohol use appeared to be limited to those women who reported binge drinking during pregnancy (aOR, 1.4; 95% CI, 0.7–3.1). Cases from hospitals at low altitude (<2500 m) tended to have more severe types of microtia than those from hospitals at high altitude. CONCLUSION: These results support the hypothesis that, in addition to teratogens, other nongenetic risk factors contribute to the occurrence of isolated microtia.Fil: Luquetti, Daniela. University of Washington; Estados Unidos. Seattle Children; Estados UnidosFil: Saltzman, Babette S.. Seattle Children; Estados UnidosFil: López Camelo, Jorge Santiago. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Parque Centenario. CEMIC-CONICET. Centro de Educaciones Médicas e Investigaciones Clínicas "Norberto Quirno". CEMIC-CONICET.; ArgentinaFil: Dutra, Maria da Graça. Instituto Oswaldo Cruz; BrasilFil: Castilla, Eduardo Enrique. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Parque Centenario. CEMIC-CONICET. Centro de Educaciones Médicas e Investigaciones Clínicas "Norberto Quirno". CEMIC-CONICET.; Argentina. Instituto Nacional de Genética Médica Populacional; Brasi
Scientific dissemination activities between UMinho biology and school students
The interaction between academic and school students through scientific dissemination
can be significant to the education of both groups. In this sense, this work aimed to identify
science dissemination activities addressed to school-age students by undergraduate or post-
graduate Biology students from the School of Sciences of the University of Minho (ECUM).
We searched all the pages of the "Events", "News", and "Society" tabs of the ECUM website,
your "Activity Reports", and the departments and centres virtual pages linked to Biology.
In the period between 2014 and 2023, twenty-five events/entities of interest were found. The
majority aimed at primary and secondary school students, followed by those focussing solely
on primary education. On the other hand, a lack of activities with pre-school children was
found. The most categories mentioned were "Lectures, seminars, round tables" and "Hands-
on activities, games, laboratory practices". The events that grouped the largest number
of different activities were: "European Researchers' Night", its "Preparatory Activities",
"Science Festival", "Open Weekend", and "UMinho Open Doors". Furthermore, the events
found focus on showing and discussing the paths and daily routines of researchers, such as:
"Learning with Scientists", "Science Holidays at the Junior Campus", "Researchers Return
to School", "Visits by Academics to Schools", and "Visits Program to the School of Sciences".
Lastly, stand out the existence of projects aimed explicitly at disseminating science linked to
Biology, such as "Science Through Our Lives" and "Scientia.com.pt - Experiment@Ciência"
Os casos de ensino na formação-investigação de professores dos anos iniciais
Este estudo se insere nos processos de formação que investigou as possibilidades dos casos de ensino serem propulsores de processos reflexivos sobre os conhecimentos da docência. Os casos de ensino são narrativas de episódios extraídos geralmente de dados reais do cotidiano escolar e que dão visibilidade às vivências dos professores, os quais, ao analisá–los ou construí-los, articulam e revivem experiências, estabelecendo processos reflexivos e relações entre a teoria e a prática. Para a realização da pesquisa, de abordagem qualitativa, objetivou-se investigar e avaliar as potencialidades dos casos de ensino, enquanto narrativa de episódios escolares, quando utilizados com professores alfabetizadores, ao lidarem com o ensino e a aprendizagem da leitura e da escrita dos alunos, auxiliando-os a reconstruir suas bases de conhecimento para o ensino. Para tanto foram trabalhados casos que retratavam eventos relacionados ao cotidiano das alfabetizadoras que atuam no anos iniciais da educação básica. O processo de formação-investigação foi realizado num ambiente virtual de aprendizagem, na perspetiva de formação continuada de docentes dos anos iniciais. As respostas dos professores participantes apontaram que a adoção de casos de ensino no desenvolvimento profissional dos professores possibilitou que as reflexões se fizessem muito presentes, posto que, ao analisarem as narrativas dos conhecimentos profissionais de colegas e seus, refletiam suas concepções, num movimento reflexivo possibilitador de aprendizagens na/da docência.This study falls in the field of the processes of formation that researched the
possibilities of teaching cases being propellers of reflexive processes on knowledge in
teaching. Teaching cases are narratives of episodes usually drawn from real daily school
life, that bring to light teachers' experiences, establishing reflexive processes and
relations between theory and practice. In order to realize this research, with a
qualitative approach, it was established the objective of investigating and evaluating the
potentiality of the teaching cases as narratives of school episodes, when used with
primary school teachers, dealing with the teaching and learning of their students'
reading and writing, helping them the re-construe their knowledge foundations in their
teaching role. To attain this goal, some cases that pictured events related to the daily
work of the primary teachers who play their educational role in the beginning years of
basic education. The process of training-research was realized in a virtual learning
environment, with a view to an ongoing training of the teachers of the first basic
education years. The answers provided by the teachers who participated in the research
suggest that the adoption of teaching cases in the professional development of teachers
made it possible for the reflexions to become very actual, since, while analysing their
colleagues' and their own narratives of professional knowledge, they were reflecting
their own ideals, in a reflexive moment that fostered learning in/of teaching.CIEC - Centro de Investigação em Estudos da Criança, IE, UMinho (UI 317 da FCT
Changing the mind: hypnosis and diabetes
[Excerpt] Diabetes, although a physiological disorder suffers the impact of negative
psychological stresses through the dysfunctional activation of the autonomic nervous and
endocrine systems. In fact, a variety of psychological variables have been found to be
important in the metabolic control and management of diabetic patients, particularly
regarding adherence to self-care behaviors and medication. Lifestyle therapy is the
cornerstone of diabetes treatment and, therefore, any intervention that is able to achieve
the control of glycaemia, prevent micro and macro complications of diabetes, improve
patient’s quality of life and decrease diabetes risk factors is certainly welcome. [...](undefined)info:eu-repo/semantics/publishedVersio
Estabelecimento de objetivos e serviços para a biblioteca da Universidade Federal do Acre em relação ao seu contexto ambiental
Aplicação de referencial teórico na análise dos fatores do meio ambiente, que podem influenciar os objetivos e serviços da Biblioteca Central da Universidade Federal do Acre
Partial safety factors for prestressed concrete girders 2 strengthened with CFRP laminates
This paper provides a framework for the calibration of partial safety factors in prestressed concrete (PC) girders strengthened in flexure with carbon fiber-reinforced polymer (CFRP) laminates. A hybrid approach was proposed to take advantage of comprehensive nonlinear numerical models in reliability analysis using a first-order reliability method (FORM) in conjunction with the response surface method (RSM). The PC girders selected for analyses were taken from real structures designed and built in the 1980s based on old standards that now require strengthening and upgrade due to partial corrosion of the prestressing strands. Using the proposed approach, a sensitivity analysis was performed to identify the most relevant variables and assess the area of CFRP laminates needed to restore capacity up to new design standards. A partial safety factor was proposed for strengthening PC girders using CFRP laminates. Sensitivity analysis showed that traffic loads and model uncertainties are the most important variables for calibration. (C) 2019 American Society of Civil Engineers.Portuguese Science and Technology Foundation (FCT)Portuguese Foundation for Science and Technology [SFRH/BD/76345/2011]Australian Research CouncilAustralian Research Council [DE150101703, LP140100591]FCT, within Institute for Sustainability and Innovation in Structural Engineering (ISISE) [UID/ECI/04029/2013]info:eu-repo/semantics/publishedVersio
Partial safety factors for prestressed concrete girders strengthened with CFRP laminates
This paper provides a framework for the calibration of partial safety factors in prestressed concrete (PC) girders strengthened in flexure with carbon fibre-reinforced polymer (CFRP) laminates. A hybrid approach was proposed to take advantage of comprehensive non-linear numerical models in reliability analysis using a first order reliability method (FORM) in conjunction to the response surface method (RSM). The PC girders selected for analyses were taken from real structures designed and built since the 1980s, based on old standards, now requiring strengthening and upgrade due to partial corrosion of prestressing strands. Using the proposed approach, a sensitivity analysis was performed to identify the most relevant variables and assess the area of CFRP laminates needed to restore the capacity to new design standards. Following this study, a partial safety factor was proposed for strengthening PC girders using CFRP laminates. A sensitivity analysis also showed the traffic loads and model uncertainties to be the most important variables for calibration
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