79 research outputs found
NEW MOHO MAP OF ITALY
In complex tectonics regions, seismological, geophysical, and geodynamic modeling require accurate definition of the Moho geometry. Various active and passive seismic experiments performed in the central Mediterranean region revealed local information on the Moho depth, in some cases used to produce interpolated maps. In this paper, we present a new and original map of the 3-D Moho geometry obtained by integrating selected high-quality controlled source seismic and teleseismic receiver function data. The very small cell size makes the retrieved model suitable for detailed regional studies, crustal corrections in teleseismic tomography, advanced 3-D ray tracing in regional earthquake location, and local earthquake tomography. Our results show the geometry of three different Moho interfaces: the European, Adriatic-Ionian, and Tyrrhenian. The three distinct Moho are fashioned following the Alpine and Apennines subduction, collision, and back-arc spreading and show medium- to high-frequency topographic undulations reflecting the complexity of the geodynamic evolution
Uso das mídias sociais pelos estudantes da Escola Agrícola em Terra Nova do Norte-MT
This experience report aims to show the use of social media by students at Escola Estadual Terra Nova, also known as Escola Agrícola, located in the municipality of Terra Nova do Norte, in the State of Mato Grosso and CNPq junior scientific initiation scholarship holders. National Olympics of Traditional, Quilombola and Indigenous Peoples project. The methodology used to prepare this work was a bibliographic survey and participant observation. As a result, we have learning from teams that work in groups and on a rotating basis and maintain the school's publicity page. Students have produced texts to participate in an event, which entitles them to a scholarship. Therefore, we conclude that the school that works with working groups effectively teaches students to better understand what is being taught. It is noteworthy that it has been an important experience as it brings basic education students closer to the university, establishing bridges to academic life.Este relato de experiência tem o objetivo de mostrar o uso das mídias sociais por estudantes Escola Estadual Terra Nova, também conhecida como Escola Agrícola, localizada no município de Terra Nova do Norte, no Estado de Mato Grosso e bolsistas de iniciação científica júnior do CNPq do projeto Olimpíada Nacional de Povos Tradicionais, Quilombolas e Indígenas. A metodologia utilizada para a elaboração deste trabalho foram o levantamento bibliográfico e a observação participante. Como resultado temos a aprendizagem das equipes que trabalham por grupos e com rotatividade e mantem a página de divulgação da escola. Os estudantes tem produzido textos para participação em evento o que lhe dá o direito a bolsa, assim, concluímos que a escola que trabalha com grupos de trabalho ensina efetivamente o estudante a compreender melhor o que se ensina. Destaca-se que tem sido uma experiência importante pois propicia a aproximação de estudantes da educação básica com a universidade, estabelecendo pontes para a vida acadêmica
Anais do XXII Seminário de Formação de Professores para o MERCOSUL/ CONE SUL
1036 p. : tabs.Homenagem ao professor Augusto Nibaldo Silva TriviñosEvento realizado em Porto Alegre de 3 a 7 de novembro de 2014Apresentação: O XXII Seminário de Formação de Professores para o MERCOSUL/ CONE SUL, está concebido dentro da problemática geral do projeto intitulado “A formação de professores para o MERCOSUL/CONE SUL (Argentina, Bolívia, Brasil, Chile, Paraguai, Uruguai e Venezuela): princípios, objetivos e modalidades. Perspectivas de uma formação básica, comum, geral”, fundado em agosto de 1993, com sede na Universidade Federal do Rio Grande do Sul – UFRGS, no qual participam professores pesquisadores dos sete países mencionados. Os vinte e dois anos de existência refletidos em vida intelectual e em bases de amizade, de fraternidade, de respeito, de cooperação, de sentimentos coletivos, além do interesse individual, de Grupo, de Nação, antecipam a possibilidade de intercambiar idéias no XXII Seminário Internacional de Investigação sobre a Formação de Professores para o MERCOSUL/CONE SUL, com a temática central: Formação do Professor como Pesquisador da/para América Latina: Augusto Nibaldo Silva Triviños, a ser realizado na Universidade Federal do Rio Grande do Sul, Porto Alegre, Rio Grande do Sul, de 03 a 07 de novembro de 2014. A realização do Seminário, organizado pelo Grupo brasileiro, permitirá projetar os possíveis próximos passos do Grupo, debater as pesquisas efetuadas, integrar os projetos sobre a Formação do Professor como Pesquisador, apresentar proposições, especialmente, para os sistemas educacionais do MERCOSUL/CONE SUL, além de divulgar e organizar, pelo menos, uma publicação em forma de livro. Os Seminários anteriores foram realizados anualmente e de modo alternado entre os países integrantes do grupo: Brasil (1993, 1994, 2002, 2006, 2009 e 2010), Chile (1995, 1998, 2003, 2005 e 2012), Argentina (1996, 2000, 2004, 2008 e 2013), Uruguai (1997, 2001 e 2011), Paraguai (1999) e Venezuela (2007). Tal Evento, para sua realização, depende do apoio das universidades nas quais os pesquisadores estão vinculados, das instituições participantes e dos organismos de fomento à pesquisa para consolidar a formação de professores e pesquisadores já realizada pelas instituições envolvidas, com possibilidade de divulgação para a sociedade brasileira, latino-americana e em particular do MERCOSUL/CONE SUL
Shelves of the Iberian Peninsula and the Balearic Islands (I): Morphology and sediment types
Here we present a synthesis of bedforms and sediment types on the shelves surrounding the Iberian Peninsula and the Balearic Islands, after the integration several pieces of bathymetric, morphological and sedimentological datasets. The Iberian and Balearic shelves are divided into segments according to the largescale margin configuration, fluvial sediment supply and hydrodynamic regime. Their geological settings and large-scale sedimentation patterns place the investigated shelves into two broad categories: abrupt, steep and narrow sediment-starved shelves, illustrated by the Cantabrian shelf, and gentle, smooth and wide sediment- fed shelves, such as the shelves off some major flivial systems. An in-depth classification was subsequently attempted, based on morpho-sedimentary types. Under this approach, the Iberian and Balearic shelves can be classified as: (1) storm-dominated shelves, with erosional rocky floors, frequent abrasion surfaces and coarse-grained sediments; (2) current-dominated shelves, showing a good equilibriumbetween sediment fluxes and coastal and shallow ocean circulation, with laterally extensive muddy belts; (3) sediment supply-dominated shelves, where extensive subaqueous deltas develop off river mouths; and (4) wave-dominated shelves that occur off coastal stretches with minor and/or multiple fluvial sediment sources and enhanced littoral current
Oral health-related quality of life of children with oral clefts and their families
Abstract Oral health problems can influence people's Quality of Life (QoL) because of pain, discomfort, limitations, and other esthetics problems, affecting their social life, feeding, daily activities, and the individual's well-being. Objective: To compare oral health-related quality of life (OHRQoL) of children with and without oral clefts and their families. Materials and Methods: 121 children aged from 2 to 6 years, from both sexes, enrolled in the treatment routine of the Pediatric Dentistry Clinics of a Dental School and a Hospital for Cleft Treatment were divided into two groups: Group 1 - children with cleft lip and palate; Group 2 - children without cleft lip and palate. The OHRQoL was assessed using the validated Portuguese version of the Early Childhood Oral Health Impact Scale (B-ECOHIS). The questionnaire was answered individually, only once, at a private place. Mann-Whitney U test was used to verify differences between groups. Spearman's Rho test was used to associate sex and age with quality of life. The level of significance was set at 5% (
Gravitational, erosional and depositional processes on volcanic ocean islands: Insights from the submarine morphology of Madeira Archipelago:Insights from the submarine morphology of Madeira Archipelago
Abstract The submarine flanks of volcanic ocean islands are shaped by a variety of physical processes. Whilst volcanic constructional processes are relatively well understood, the gravitational, erosional and depositional processes that lead to the establishment of large submarine tributary systems are still poorly comprehended. Until recently, few studies have offered a comprehensive source-to-sink approach, linking subaerial morphology with near-shore shelf, slope and far-field abyssal features. In particular, few studies have addressed how different aspects of the subaerial part of the system (island height, climate, volcanic activity, wave regime, etc.) may influence submarine flank morphologies. We use multibeam bathymetric and backscatter mosaics of an entire archipelago – Madeira – to investigate the development of their submarine flanks. Crucially, this dataset extends from the nearshore to the deep sea, allowing a solid correlation between submarine morphologies with the physical and geological setting of the islands. In this study we also established a comparison with other island settings, which allowed us to further explore the wider implications of the observations. The submarine flanks of the Madeira Archipelago are deeply dissected by large landslides, most of which also affected the subaerial edifices. Below the shelf break, landslide chutes extend downslope forming poorly defined depositional lobes. Around the islands, a large tributary system composed of gullies and channels has formed where no significant rocky/ridge outcrops are present. In Madeira Island these were likely generated by turbidity currents that originated as hyperpycnal flows, whilst on Porto Santo and Desertas their origin is attributed to storm-induced offshore sediment transport. At the lower part of the flanks (−3000 to −4300 m), where seafloor gradients decrease to 0.5°–3°, several scour and sediment wave fields are present, with the former normally occurring upslope of the latter. Sediment waves are often associated with the depositional lobes of the landslides but also occur offshore poorly-developed tributary systems. Sediment wave fields and scours are mostly absent in areas where the tributary systems are well developed and/or are dominated by rocky outcrops. This suggests that scours and sediment wave fields are probably generated by turbidity currents, which experience hydraulic jumps where seafloor gradients are significantly reduced and where the currents become unconfined. The largest scours were found in areas without upslope channel systems and where wave fields are absent, and are also interpreted to have formed from unconfined turbidity currents. Our observations show that tributary systems are better developed in taller and rainy islands such as Madeira. On low-lying and dry islands such as Porto Santo and Desertas, tributary systems are poorly developed with unconfined turbidite currents favouring the development of scours and sediment wave fields. These observations provide a more comprehensive understanding of which factors control the gravitational, erosional, and depositional features shaping the submarine flanks of volcanic ocean islands
Implementation tells us more beyond pooled estimates: Secondary analysis of a multicountry mhealth trial to reduce blood pressure
Background: The uptake of an intervention aimed at improving health-related lifestyles may be influenced by the participant’s stage of readiness to change behaviors. Objective: We conducted secondary analysis of the Grupo de Investigación en Salud Móvil en América Latina (GISMAL) trial according to levels of uptake of intervention (dose-response) to explore outcomes by country, in order to verify the consistency of the trial’s pooled results, and by each participant’s stage of readiness to change a given lifestyle at baseline. The rationale for this secondary analysis is motivated by the original design of the GISMAL study that was independently powered for the primary outcome—blood pressure—for each country. Methods: We conducted a secondary analysis of a mobile health (mHealth) multicountry trial conducted in Argentina, Guatemala, and Peru. The intervention consisted of monthly motivational phone calls by a trained nutritionist and weekly tailored text messages (short message service), over a 12-month period, aimed to enact change on 4 health-related behaviors: salt added to foods when cooking, consumption of high-fat and high-sugar foods, consumption of fruits or vegetables, and practice of physical activity. Results were stratified by country and by participants’ stage of readiness to change (precontemplation or contemplation; preparation or action; or maintenance) at baseline. Exposure (intervention uptake) was the level of intervention (<50%, 50%-74%, and ≥75%) received by the participant in terms of phone calls. Linear regressions were performed to model the outcomes of interest, presented as standardized mean values of the following: blood pressure, body weight, body mass index, waist circumference, physical activity, and the 4 health-related behaviors. Results: For each outcome of interest, considering the intervention uptake, the magnitude and direction of the intervention effect differed by country and by participants’ stage of readiness to change at baseline. Among those in the high intervention uptake category, reductions in systolic blood pressure were only achieved in Peru, whereas fruit and vegetable consumption also showed reductions among those who were at the maintenance stage at baseline in Argentina and Guatemala. Conclusions: Designing interventions oriented toward improving health-related lifestyle behaviors may benefit from recognizing baseline readiness to change and issues in implementation uptake.Fil: Carrillo-Larco, Rodrigo M.. Universidad Peruana Cayetano Heredia; Perú. Imperial College London; Reino UnidoFil: Jiwani, Safia S.. Universidad Peruana Cayetano Heredia; PerúFil: Diez Canseco, Francisco. Universidad Peruana Cayetano Heredia; PerúFil: Kanter, Rebecca. Institute of Nutrition of Central America and Panama; Guatemala. Universidad de Chile; ChileFil: Beratarrechea, Andrea Gabriela. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Institute for Clinical Effectiveness and Health Policy; ArgentinaFil: Irazola, Vilma. Institute for Clinical Effectiveness and Health Policy; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; ArgentinaFil: Ramirez Zea, Manuel. Institute of Nutrition of Central America and Panama; GuatemalaFil: Rubinstein, Adolfo Luis. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Parque Centenario. Centro de Investigaciones en Epidemiología y Salud Pública. Instituto de Efectividad Clínica y Sanitaria. Centro de Investigaciones en Epidemiología y Salud Pública; ArgentinaFil: Martinez, Homero. Nutrition International; Canadá. Hospital Infantil de Mexico Federico Gomez; MéxicoFil: Miranda, J. Jaime. Cronicas Centro de Excelencia En Enfermedades Crónicas; Perú. Universidad Peruana Cayetano Heredia; PerúFil: Alasino, Adrían. Funprecal; ArgentinaFil: Budiel Moscoso, Berneth Nuris. Universidad Peruana Cayetano Heredia; PerúFil: Carrara, Carolina. Instituto Universitario del Hospital Italiano de Buenos Aires; ArgentinaFil: Espinoza Surichaqui, Jackelyn. Universidad Peruana Cayetano Heredia; PerúFil: Giardini, Gimena. Instituto Universitario del Hospital Italiano de Buenos Aires; ArgentinaFil: Guevara, Jesica. Institute of Nutrition of Central America And Panama Guatemala; GuatemalaFil: Morales Juárez, Analí. Institute of Nutrition of Central America And Panama Guatemala; GuatemalaFil: Lázaro Cuesta, Lorena. Funprecal; ArgentinaFil: Lewitan, Dalia. Institute For Clinical Effectiveness And Health Policy; ArgentinaFil: Palomares Estrada, Lita. Universidad Peruana Cayetano Heredia; PerúFil: Martínez Ramírez, Carla. Universidad Peruana Cayetano Heredia; PerúFil: de la Cruz, Gloria Robles. Universidad Peruana Cayetano Heredia; PerúFil: Salguero, Julissa. Institute Of Nutrition Of Central America And Panama Guatemala; GuatemalaFil: Saravia Drago, Juan Carlos. Universidad Peruana Cayetano Heredia; PerúFil: Urtasún, María. Institute For Clinical Effectiveness And Health Policy; ArgentinaFil: Zavala Loayza, José Alfredo. Universidad Peruana Cayetano Heredia; Per
EFEITO HIPOTENSOR DO EXERCÍCIO INTERVALADO DE ALTA INTENSIDADE EM ANIMAIS ESPONTANEAMENTE HIPERTENSOS
O exercício físico aeróbio é uma proposta terapêutica tradicional e indicada para hipertensos, porém alguns estudos têm evidenciado que os exercícios do tipo intervalado de alta intensidade (HIIT) podem ser indicados para estes indivíduos. O objetivo deste estudo foi avaliar o controle pressórico em ratos submetidos ao HIIT. Os animais foram divididos em três grupos: espontaneamente hipertensos controle sedentário (SHR, n=7) espontaneamente hipertensos treinados (SHR+T, n=7) e Wistar Kyoto controle (C, n=7). O protocolo de treinamento foi realizado em esteira adaptada para roedores, 5 vezes por semana por 8 semanas, baseados na velocidade máxima de exaustão, com intervalos de descanso ativo. A avaliação da pressão arterial sistólica foi realizada pelo pletismógrafo utilizando o método manguito de cauda. O resultado encontrado foi uma diminuição significativa na variação da pressão arterial sistólica nos animais submetidos ao HIIT. Concluímos que o HIIT proporcionou um efeito hipotensor em ratos espontaneamente hipertensos
A reference time scale for Site U1385 (Shackleton Site) on the SW Iberian Margin
We produced a composite depth scale and chronology for Site U1385 on the SW Iberian Margin. Using log(Ca/Ti) measured by core scanning XRF at 1-cm resolution in all holes, a composite section was constructed to 166.5 meters composite depth (mcd) that corrects for stretching and squeezing in each core. Oxygen isotopes of benthic foraminifera were correlated to a stacked δ^18O reference signal (LR04) to produce an oxygen isotope stratigraphy and age model.
Variations in sediment color contain very strong precession signals at Site U1385, and the amplitude modulation of these cycles provides a powerful tool for developing an orbitally-tuned age model. We tuned the U1385 record by correlating peaks in L* to the local summer insolation maxima at 37^oN. The benthic δ^18O record of Site U1385, when placed on the tuned age model, generally agrees with other time scales within their respective chronologic uncertainties.
The age model is transferred to down-core data to produce a continuous time series of log(Ca/Ti) that reflect relative changes of biogenic carbonate and detrital sediment. Biogenic carbonate increases during interglacial and interstadial climate states and decreases during glacial and stadial periods. Much of the variance in the log(Ca/Ti) is explained by a linear combination of orbital frequencies (precession, tilt and eccentricity), whereas the residual signal reflects suborbital climate variability. The strong correlation between suborbital log(Ca/Ti) variability and Greenland temperature over the last glacial cycle at Site U1385 suggests that this signal can be used as a proxy for millennial-scale climate variability over the past 1.5 Ma.
Millennial climate variability, as expressed by log(Ca/Ti) at Site U1385, was a persistent feature of glacial climates over the past 1.5 Ma, including glacial periods of the early Pleistocene (‘41-kyr world’) when boundary conditions differed significantly from those of the late Pleistocene (‘100-kyr world’). Suborbital variability was suppressed during interglacial stages and enhanced during glacial periods, especially when benthic δ^18O surpassed ~ 3.3-3.5‰. Each glacial inception was marked by appearance of strong millennial variability and each deglaciation was preceded by a terminal stadial event. Suborbital variability may be a symptomatic feature of glacial climate or, alternatively, may play a more active role in the inception and/or termination of glacial cycles.This research was supported by the Natural Environmental Research Council Grant NE/K005804/1 to DH and LS and NE/J017922/1 to DH.This is the final version of the article. It first appeared from Elsevier via http://dx.doi.org/10.1016/j.gloplacha.2015.07.00
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