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Escore de risco Dante Pazzanese para síndrome coronariana aguda sem supradesnivelamento do segmento ST; Dante Pazzanese risk score for non-st-segment elevation acute coronary syndrome; Score de riesgo dante pazzanese para síndrome coronario agudo sin supradesnivel del segmento ST

SANTOS, Elizabete Silva dos; TIMERMAN, Ari; BALTAR, Valéria Troncoso; CASTILLO, Maria Tereza Cabrera; PEREIRA, Marcos Paulo; MINUZZO, Luiz; PIEGAS, Leopoldo Soares
Fonte: Sociedade Brasileira de Cardiologia - SBC Publicador: Sociedade Brasileira de Cardiologia - SBC
Tipo: Artigo de Revista Científica
POR
Relevância na Pesquisa
17%
FUNDAMENTO: Em síndrome coronariana aguda (SCA), é importante estimar a probabilidade de eventos adversos. OBJETIVO: Desenvolver um escore de risco em uma população brasileira com SCA sem supradesnivelamento do segmento ST (SST). MÉTODOS: Foram avaliados prospectivamente 1.027 pacientes em um centro brasileiro de cardiologia. Um modelo de regressão logística múltipla foi desenvolvido para prever o risco de morte ou de (re)infarto em 30 dias. A acurácia preditiva do modelo foi determinada pelo C statistic. RESULTADOS: O evento combinado ocorreu em 54 pacientes (5,3%). O escore foi criado pela soma aritmética de pontos dos preditores independentes, cujas pontuações foram designadas pelas respectivas probabilidades de ocorrência do evento. As seguintes variáveis foram identificadas: aumento da idade (0 a 9 pontos); antecedente de diabete melito (2 pontos) ou de acidente vascular cerebral (4 pontos); não utilização prévia de inibidor da enzima conversora da angiotensina (1 ponto); elevação da creatinina (0 a 10 pontos); e combinação de elevação da troponina I cardíaca e depressão do segmento ST (0 a 4 pontos). Foram definidos quatro grupos de risco: muito baixo (até 5 pontos); baixo (6 a 10 pontos); intermediário (11 a 15 pontos); e alto risco (16 a 30 pontos). O C statistic para a probabilidade do evento foi de 0...

The role of the South Indian and Pacific oceans in South American monsoon variability

DRUMOND, A. R. de M.; AMBRIZZI, T.
Fonte: SPRINGER WIEN Publicador: SPRINGER WIEN
Tipo: Artigo de Revista Científica
ENG
Relevância na Pesquisa
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This work has investigated the impact of three different low-frequency sea surface temperature (SST) variability modes located in the Indian and the Pacific Oceans on the interannual variability of the South American Monsoon System (SAMS) using observed and numerical data. Rotated Empirical Orthogonal Function (REOF) analysis and numerical simulations with a General Circulation Model (GCM) were used. One of the three SST variability modes is located close to southeastern Africa. According to the composites, warmer waters over this region are associated with enhanced austral summer precipitation over the sub-tropics. The GCM is able to reproduce this anomalous precipitation pattern, simulating a wave train emanating from the Indian Ocean towards South America (SA). A second SST variability mode was located in the western Pacific Ocean. REOF analysis indicates that warmer waters are associated with drought conditions over the South Atlantic Convergence Zone (SACZ) and enhanced precipitation over the sub-tropics. The GCM indicates that the warmer waters over Indonesia generate drought conditions over tropical SA through a Pacific South America-like (PSA) wave pattern emanating from the western Pacific. Finally, the third SST variability mode is located over the southwestern South Pacific. The composites indicate that warmer waters are associated with enhanced precipitation over the SACZ and drought conditions over the sub-tropics. There is a PSA-like wave train emanating from Indonesia towards SA...

Reproducibility of South American precipitation due to subtropical South Atlantic SSTs

TASCHETTO, Andrea S.; WAINER, Ilana
Fonte: AMER METEOROLOGICAL SOC Publicador: AMER METEOROLOGICAL SOC
Tipo: Artigo de Revista Científica
ENG
Relevância na Pesquisa
17%
This work investigates the eproducibility of precipitation simulated with an atmospheric general circulation model (AGCM) forced by subtropical South Atlantic sea surface temperature (SST) anomalies. This represents an important test of the model prior to investigating the impact of SSTs on regional climate. A five-member ensemble run was performed using the National Center for Atmospheric Research (NCAR) Community Climate Model, version 3 (CCM3). The CCM3 was forced by observed monthly SST over the South Atlantic from 20 to 60 S. The SST dataset used is from the Hadley Centre covering the period of September 1949-October 2001; this covers more than 50 yr of simulation. A statistical technique is used to determine the reproducibility in the CCM3 runs and to assess potential predictability in precipitation. Empirical orthogonal function analysis is used to reconstruct the ensemble using the most reproducible forced modes in order to separate the atmospheric response to local SST forcing from its internal variability. Results for reproducibility show a seasonal dependence, with higher values during austral autumn and spring. The spatial distribution of reproducibility shows that the tropical atmosphere is dominated by the underlying SSTs while variations in the subtropical-extratropical regions are primarily driven by internal variability. As such...

Gradientes de qualidade em abacaxi 'Pérola' em função do tamanho e do estádio de maturação do fruto

Reinhardt,Domingo Haroldo; Medina,Valdique Martins; Caldas,Ranulfo Correa; Cunha,Getúlio Augusto Pinto da; Estevam,Rodrigo Fernandes Herrera
Fonte: Sociedade Brasileira de Fruticultura Publicador: Sociedade Brasileira de Fruticultura
Tipo: Artigo de Revista Científica Formato: text/html
Publicado em 01/12/2004 PT
Relevância na Pesquisa
17.1%
Frutos compostos podem apresentar variações expressivas nas propriedades da polpa, exigindo cuidados especiais nos procedimentos de controle de qualidade. Este trabalho visou a determinar gradientes dos principais atributos da polpa do abacaxi 'Pérola', em função do tamanho e do estádio de maturação dos frutos. Estes foram colhidos em plantios comerciais em Itaberaba-BA, na safra 2002, determinando-se os teores de sólidos solúveis totais (SST), vitamina C (ácido ascórbico) e da acidez titulável (AT), o pH e a relação SST/AT no suco. Em delineamento inteiramente casualizado, foram estudados os tratamentos distribuídos em esquema fatorial 2 (tamanho do fruto - pequeno e grande) x 2 (estádio de maturação do fruto - verdoso/pintado e colorido) x 3 (terços superior, mediano e inferior), com 15 repetições, no primeiro experimento, e em esquema fatorial 3 (terços superior, mediano, inferior) x 3 (terços externo, central e interno), com sete repetições, no segundo. Os SST aumentaram da parte superior do fruto para a inferior e da externa para a interna, sendo mais altos em frutos coloridos, ocorrendo o contrário para a AT e a vitamina C. Frutos pequenos apresentaram maiores teores de SST e AT e menores de SST/AT e vitamina C. A amplitude dos gradientes observados no abacaxi 'Pérola' exige a utilização de amostras constituídas por seções longitudinais e horizontais completas do fruto...

Qualidade, fenóis e enzimas oxidativas de uva 'Itália' sob influência do cálcio, durante a maturação

LIMA,MARIA AUXILIADORA COÊLHO DE; ALVES,RICARDO ELESBÃO; ASSIS,JOSTON SIMÃO DE; FILGUEIRAS,HELOÍSA ALMEIDA CUNHA; COSTA,JOSÉ TARCISO ALVES
Fonte: Embrapa Informação Tecnológica; Pesquisa Agropecuária Brasileira Publicador: Embrapa Informação Tecnológica; Pesquisa Agropecuária Brasileira
Tipo: Artigo de Revista Científica Formato: text/html
Publicado em 01/12/2000 PT
Relevância na Pesquisa
17.1%
Este trabalho foi realizado na Empresa Timbaúba Agrícola S.A., em Petrolina, PE, visando avaliar o efeito da aplicação, pré-colheita, de Ca, sobre a qualidade, teores de fenóis e atividade de enzimas oxidativas da uva (Vitis vinifera L.) 'Itália', durante a maturação. Utilizaram-se doses de Ca de 0, 0,5, 1,0 e 1,5%, na forma de cloreto de Ca diidratado, via imersão por 10 segundos, na fase de mudança de cor e início de amolecimento das bagas (57 dias após a formação dos frutos), em cachos marcados. Realizaram-se avaliações aos 28, 43, 57, 72 e 92 dias após a formação dos frutos. O delineamento experimental foi inteiramente casualizado, num fatorial 4 x 5, com quatro repetições. Analisaram-se as variáveis: sólidos solúveis totais (SST), acidez total titulável (ATT), relação SST/ATT, pH, fenóis totais e atividade das enzimas polifenoloxidase (PPO) e peroxidase (PDO). Com o aumento das doses de Ca, o teor de SST e a relação SST/ATT foram reduzidos. Entretanto, os valores de SST verificados atenderam à exigência de mercado. A atividade da PDO foi reduzida em 13,26% pelo Ca na dose de 1,0% e aumentada em 27,15% pelo Ca 1,5%, em comparação com a da testemunha. As demais variáveis não sofreram efeito do Ca exógeno.

Qualidade, fenois e enzimas oxidativas de uva 'italia' sob influencia do calcio, durante a maturacao.

LIMA, M.A.C. de; ALVES, R.E.; ASSIS, J.S. de; FILGUEIRAS, H.A.C.; COSTA, J.T.A.
Fonte: Pesquisa Agropecuaria Brasileira, Brasilia, v.35, n.12, p.2493-99, dez.2000. Publicador: Pesquisa Agropecuaria Brasileira, Brasilia, v.35, n.12, p.2493-99, dez.2000.
Tipo: Artigo em periódico indexado (ALICE)
PT_BR
Relevância na Pesquisa
17.1%
Este trabalho foi realizado na Empresa Timbauba Agricola S.A., em Petrolina, PE, visando avaliar o efeito da aplicacao, pre-colheita, de Ca, sobre a qualidade, teores de fenois e atividade de enzimas oxidativas da uva (Vitis vinifera L.) 'Italia', durante a maturacao. Utilizaram-se doses de Ca de 0, 0,5, 1,0 e 1,5%, na forma de cloreto de Ca diidratado, via imersao por 10 segundos, na fase de mudanca de cor e inicio de amolecimento das bagas (57 dias apos a formacao dos frutos), em cachos marcados. Realizaram-se avaliacoes aos 28, 43, 57, 72 e 92 dias apos a formacao dos frutos. O delineamento experimental foi inteiramente casualizado, num atorial 4 x 5, com quatro repeticoes. Analisaram-se as variáveis: solidos soluveis totais (SST), acidez total titulavel (ATT), relacao SST/ATT, pH, fenois totais e atividade das enzimas polifenoloxidase (PPO) e peroxidase (PDO). Com o aumento das doses de Ca, o teor de SST e a relação SST/ATT foram reduzidos. Entretanto, os valores de SST verificados atenderam à exigencia de mercado. A atividade da PDO foi reduzida em 13,26% pelo Ca na dose de 1,0% e aumentada em 27,15% pelo Ca 1,5%, em comparacao com a da testemunha. As demais variaveis não sofreram efeito do Ca exogeno.; 2000

Caracteristicas fisico-quimicas dos frutos de quatro cultivares e tres clones de goiabeira em Porto Lucena, RS.

GERHARDT, L. B. de A.; MANICA, I.; KIST, H.; SIELER, R. L.
Fonte: Pesquisa Agropecuaria Brasileira, Brasilia, v.32, n.2, p.185-192, fev. 1997. Publicador: Pesquisa Agropecuaria Brasileira, Brasilia, v.32, n.2, p.185-192, fev. 1997.
Tipo: Artigo em periódico indexado (ALICE)
PT_BR
Relevância na Pesquisa
17.1%
Objetivou-se caracterizar fisica e quimicamente os frutos de quatro cultivares (Riverside vermelha, Brune vermelha, IAC-4, Pirassununga vermelha) e tres clones (RBS-1, RBS-2, Patillo) de goiabeira (Psidium guajava L.) em Porto Lucena, RS. Avaliaram-se caracteristicas fisicas do peso medio, diametro longitudinal (DL) e transversal (DT) e sua relacao, peso e espessura da polpa e miolo e suas relacoes, firmeza do fruto, e as caracteristicas quimicas de fibra bruta, umidade, pectina, acidez titulavel, pH, vitamina C, solidos soluveis totais (SST), a relacao SST/acidez, e os acucares redutores, nao-redutores e totais. Os frutos da 'IAC-4' obtiveram maior espessura da polpa, e melhor relacao polpa/miolo em espessura, umidade e SST; 'Patillo' apresentou bons atributos fisicos, maior conteudo de pectina, vitamina C, acidez, acucares redutores e menor pH; contudo, seu uso para consumo e processamento e limitado, pela coloracao branca da polpa, sabor e aroma pouco agradavel. A 'Riverside vermelha' mostrou maior peso medio da polpa e do miolo, maior diametro transversal, maior espessura do miolo, e maior firmeza do fruto, elevada pictina e maior teor de acucares nao-redutores. A 'RBS-1' apresentou elevado peso medio, diametro transversal longitudinal...

Implementation of Stroke Dysphagia Screening in the Emergency Department

Daniels, Stephanie K.; Anderson, Jane A.; Petersen, Nancy J.
Fonte: Hindawi Publishing Corporation Publicador: Hindawi Publishing Corporation
Tipo: Artigo de Revista Científica
EN
Relevância na Pesquisa
17.1%
Early detection of dysphagia is critical in stroke as it improves health care outcomes. Administering a swallowing screening tool (SST) in the emergency department (ED) appears most logical as it is the first point of patient contact. However, feasibility of an ED nurse-administered SST, particularly one involving trial water swallow administration, is unknown. The aims of this pilot study were to (1) implement an SST with a water swallow component in the ED and track nurses' adherence, (2) identify barriers and facilitators to administering the SST through interviews, and (3) develop and implement a process improvement plan to address barriers. Two hundred seventy-eight individuals with stroke symptoms were screened from October 2009 to June 2010. The percentage of patients screened increased from 22.6 in October 2009 to a high of 80.8 in March 2010, followed by a decrease to 61.9% in June (Cochran-Armitage test z = −5.1042,  P < 0.0001). The odds of being screened were 4.0 times higher after implementation compared to two months before implementation. Results suggest that it is feasible for ED nurses to administer an SST with a water swallow component. Findings should facilitate improved quality of care for patients with suspected stroke and improve multidisciplinary collaboration in swallowing screening.

Conservação pós-colheita de uvas Red Globe tratadas com cloreto de cálcio; Physical-chemical Characteristics of Red Globe grapes treated with Calcium chloride

Carvalho, Geny Lopes de
Fonte: UNIVERSIDADE FEDERAL DE LAVRAS; DCA - Programa de Pós-graduação; UFLA; BRASIL Publicador: UNIVERSIDADE FEDERAL DE LAVRAS; DCA - Programa de Pós-graduação; UFLA; BRASIL
Tipo: Dissertação
Publicado em 18/08/2014 PT_BR
Relevância na Pesquisa
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´Red Globe´ (Vitis vinifera L) grown in Jales, northeast of São Paulo State, Brazil, were studied. The fruit were treated by 10-minute immersion in calcium chloride (CaCl2) solutions 0, 1, 2, and 3% and stored at 0°C and 90 + 3% RH for 30, 60, and 90 days. After each storage period, the fruit were brought to room temperature (20-25 °C) and analyzed on the 0, 3rd, and 6th days, considering shelf life. The experiment design was completely randomized with a 4x3x3 factorial scheme (CaCl2 concentration x storage time x shelf life) with three repetitions. Mass loss (%), abscission (%), color (L and "a), malvidine (mg/100 g), total soluble solids - TSS (%), titratable acidity - TA (%), tartaric acid (%), pH, TSS/TA, total sugars (%), reducing sugars (%), non-reducing sugars (%), fructose (%), glucose (%), total phenolics (mg/100 g), riboflavin, cell wall, calcium, firmness, cell wall yield, cellulose, hemicelulose and pectin were evaluated. The results obtained were submitted to variance and regression analyses. It was concluded that, regardless of the CaCl2 treatment, the shelf life of cv. Red Globe stored under refrigeration was 90 days. After removal from the refrigerated stored room, the fruit could be stored up to 3 days as on the 6th day is was observed a mass loss over the limit of 6%. Fruit treated with CaCl2 presented effect on percent abscission. Abscission was higher than in the control group (CaCl2 0%) and at after 6 days on shelf. CaCl2 treatment did not influence TSS content. CaCl2 treatment (1...

The ASTRI Mini-Array Science Case

Vercellone, S.; Agnetta, G.; Antonelli, L. A.; Bastieri, D.; Bellassai, G.; Belluso, M.; Bigongiari, C.; Billotta, S.; Biondo, B.; Bonanno, G.; Bonnoli, G.; Bruno, P.; Bulgarelli, A.; Canestrari, R.; Capalbi, M.; Caraveo, P.; Carosi, A.; Cascone, E.; Cata
Fonte: Universidade Cornell Publicador: Universidade Cornell
Tipo: Artigo de Revista Científica
Publicado em 22/07/2013
Relevância na Pesquisa
17.1%
ASTRI is a Flagship Project financed by the Italian Ministry of Education, University and Research, and led by INAF, the Italian National Institute of Astrophysics. Within this framework, INAF is currently developing an end-to-end prototype of a Small Size Telescope in a dual-mirror configuration (SST-2M) for the Cherenkov Telescope Array (CTA), scheduled to start data acquisition in 2014. Although the ASTRI SST-2M prototype is mainly a technological demonstrator, it will perform scientific observations of the Crab Nebula, Mrk 421 and Mrk 501 at E>1 TeV. A remarkable improvement in terms of performance could come from the operation, in 2016, of a SST-2M mini-array, composed of a few SST-2M telescopes to be placed at final CTA Southern Site. The SST mini-array will be able to study in great detail relatively bright sources (a few x 10E-12 erg/cm2/s at 10 TeV) with angular resolution of a few arcmin and energy resolution of about 10-15%. Thanks to the stereo approach, it will be possible to verify the wide field of view (FoV) performance through the detections of very high-energy showers with core located at a distance up to 500 m, to compare the mini-array performance with the Monte Carlo expectations by means of deep observations of selected targets...

Status of Telescope Fabra ROA at Montsec: Optical Observations for Space Surveillance & Tracking

Fors, O.; Montojo, F. J.; Nunez, J.; Muinos, J. L.; Boloix, J.; Baena, R.; Morcillo, R.; Merino, M.
Fonte: Universidade Cornell Publicador: Universidade Cornell
Tipo: Artigo de Revista Científica
Publicado em 27/09/2011
Relevância na Pesquisa
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The telescope Fabra ROA at Montsec (TFRM) is a 0.5m f/1 refurbished Baker-Nunn Camera (BNC) operated by a collaboration between the Fabra Observatory - Royal Academy of Arts and Sciences of Barcelona and the Spanish Navy Observatory (ROA), and installed at Montsec Astronomical Observatory (Spain). Among other capabilities, its CCD FoV (4.4{\deg}x4.4{\deg}), the telescope tracking at arbitrary RA and DEC rates, and the CCD shutter commanding at will during the exposure are specially remarkable for Space Surveillance and Tracking (SST) observational programs. On Feb 2011, the TFRM participated, in the CO-VI third run satellite tracking campaign of the ESA SST/Space Surveillance Awareness Preparatory Program (SST/SSA-PP). During this multi-asset 7-day campaign the TFRM conducted systematic observations of artificial satellites which yielded to the determination of 1137 accurate position measurements. Since Feb 2011, the TFRM is observing in remote and fully unattended robotic modes under commissioning status. A summary of the results of the ESA CO-VI SST optical observational campaign and insights of other SST-like observations in process will be presented.; Comment: Technical paper from oral presentation at Advanced Maui Optical and Space Surveillance (AMOS) conference 2011. To be published online on AMOS website

Steady state thermodynamics

Sasa, Shin-ichi; Tasaki, Hal
Fonte: Universidade Cornell Publicador: Universidade Cornell
Tipo: Artigo de Revista Científica
Relevância na Pesquisa
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The present paper reports our attempt to search for a new universal framework in nonequilibrium physics. We propose a thermodynamic formalism that is expected to apply to a large class of nonequilibrium steady states including a heat conducting fluid, a sheared fluid, and an electrically conducting fluid. We call our theory steady state thermodynamics (SST) after Oono and Paniconi's original proposal. The construction of SST is based on a careful examination of how the basic notions in thermodynamics should be modified in nonequilibrium steady states. We define all thermodynamic quantities through operational procedures which can be (in principle) realized experimentally. Based on SST thus constructed, we make some nontrivial predictions, including an extension of Einstein's formula on density fluctuation, an extension of the minimum work principle, the existence of a new osmotic pressure of a purely nonequilibrium origin, and a shift of coexistence temperature. All these predictions may be checked experimentally to test SST for its quantitative validity.; Comment: 91 pages, 24 figures, v.2: We have made many nontrivial improvements (Appendix A is new and reports another example where SST can be verified; Section 8.3.3 is also new; We also have discussions about linear response in a nonequilibrium steady state (see sections 6.2...

Centennial to multidecadal timeseries of North Atlantic climatology during the last two glacial-interglacial transitions and marine-terrestrial teleconnections

Jiménez Amat, Patricia
Fonte: [Barcelona] : Universitat Autònoma de Barcelona, Publicador: [Barcelona] : Universitat Autònoma de Barcelona,
Tipo: Tesis i dissertacions electròniques; info:eu-repo/semantics/doctoralThesis Formato: application/pdf
Publicado em //2014 ENG; ENG
Relevância na Pesquisa
17.1%
Con el fin de identificar y comprender la secuencia de eventos y los mecanismos involucrados en las transiciones glaciales-interglaciares y el establecimiento de los posteriores períodos interglaciares, es esencial mejorar nuestro entendimiento acerca de la variabilidad del clima y la sensibilidad del océano en áreas clave como el Atlántico Norte a escalas de tiempo de alta resolución. El Atlántico Norte es una región muy sensible a los cambios de las condiciones climáticas durante terminaciones glaciares debido a su proximidad a las capas de hielo del Hemisferio Norte. Por otra parte, el Atlántico Norte es una región de formación de aguas profundas, lo cual es crítico en el ajuste del modo de la circulación meridional atlántica (AMOC). Por tanto, cualquier perturbación en esta región es de importancia global. Reconstrucciones climáticas del Atlántico Norte durante el último periodo interglacial (Estadio Isotópico Marino 5e, en sus siglas en inglés, MIS 5e) revelan condiciones climáticas en común con las proyecciones que los modelos climáticos predicen para el siglo 21, bajo la continua influencia humana y el aumento de gases de efecto invernadero. Por tanto, el período MIS5e se considera un buen análogo para el futuro calentamiento climático. Esta tesis contribuye en este sentido con reconstrucciones climáticas de alta resolución que muestran la variabilidad de la climatología superficial oceánica del Atlántico Norte durante el actual (Holoceno) y el último (MIS5e) períodos interglaciares y sus respectivas previas deglaciaciones (T1...

Millennial-scale sea surface temperature variability in the western tropical North Atlantic from planktonic foraminiferal census counts

Hüls, Matthias; Zahn, Rainer
Fonte: Universidade Autônoma de Barcelona Publicador: Universidade Autônoma de Barcelona
Tipo: Artigo de Revista Científica Formato: application/pdf
Publicado em //2000 ENG
Relevância na Pesquisa
17.1%
Planktonic foraminiferal census counts are used to construct high-resolution sea surface temperature (SST) and subsurface (thermocline) temperature records at a core site in the Tobago Basin, Lesser Antilles. The record is used to document climatic variability at this tropical site in comparison to middle- and high-latitude sites and to test current concepts of cross-equatorial heat transports as a major player in interhemispheric climate variability. Temperatures are estimated using transfer function and modern analog techniques. Glacial-maximum cooling of 2.5°'3°C is indicated; maximum cooling by 4°C is inferred for isotope stage 3. The SST record displays millennial-scale variability with temperature jumps of up to 3°C and closely tracks the structure of ice-core Dansgaard/Oeschger cycles. SST variations in part of the record run opposite to the SST evolution at high northern latitude sites, pointing to thermohaline circulation and marine heat transport as an important factor driving SST in the tropical and high-latitude Atlantic, both on orbital and suborbital timescales.

Process-based analysis of climate model ENSO simulations: Intermodel consistency and compensating errors

Linz, Marianna; Tziperman, Eli; MacMartin, Douglas G.
Fonte: American Geophysical Union Publicador: American Geophysical Union
Tipo: Article; PeerReviewed Formato: application/pdf; text/plain; application/pdf
Publicado em 27/06/2014
Relevância na Pesquisa
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Systematic and compensating errors can lead to degraded predictive skill in climate models. Such errors may be identified by comparing different models in an analysis of individual physical processes. We examine model simulations of El Niño–Southern Oscillation (ENSO) in five Coupled Model Intercomparison Project (CMIP) models, using transfer functions to analyze nine processes critical to ENSO's dynamics. The input and output of these processes are identified and analyzed, some of which are motivated by the recharge oscillator theory. Several errors and compensating errors are identified. The east-west slope of the equatorial thermocline is found to respond to the central equatorial Pacific zonal wind stress as a damped driven harmonic oscillator in all models. This result is shown to be inconsistent with two different formulations of the recharge oscillator. East Pacific sea surface temperature (SST) responds consistently to changes in the thermocline depth in the eastern Pacific in the five CMIP models examined here. However, at time scales greater than 2 years, this consistent model response disagrees with observations, showing that the SST leads thermocline depth at long time scales. Compensating errors are present in the response of meridional transport of water away from the equator to SST: two different models show different response of the transport to off-equatorial wind curl and wind curl response to East Pacific SST. However...

Spatial and temporal variability of sea surface temperature and fisheries distribution with the North Atlantic Oscillation

Griefen, Ana; Bonamusa, Jessica
Fonte: Universidade Duke Publicador: Universidade Duke
Tipo: Masters' project
Publicado em 24/04/2014
Relevância na Pesquisa
17.1%
Increasing evidence supports relationships between fisheries distribution and climate variability. The main driver of climate variability in the North Atlantic Ocean is the North Atlantic Oscillation (NAO). Fisheries distribution is influenced by sea surface temperature (SST), which displays a dynamic relationship with the NAO. To assess these relationships, we conducted a spatial and temporal analysis of SST, fisheries distribution, and the NAO from 1986 to 2008 in the Northwest Atlantic and Gulf of Mexico. We conducted a pixel-level linear regression analysis with the USGS Curve Fit tool in ArcMap to examine the spatial patterns of correlation coefficients and goodness of fit between monthly SST and monthly NAO index. We identified five regions in the Northwest Atlantic, and two regions in the Gulf of Mexico, where coefficients demonstrated relatively significant correlation between SST and the NAO. These regions were consistent with local ocean circulation patterns. To assess the relationship between the NAO and fisheries distribution in the identified correlation regions, we calculated linear regressions between tuna and swordfish catches and effort distribution with the NAO as the explanatory variable. Our results suggest that our linear model with the NAO as the single explanatory variable was too simplistic to explain fisheries catch and distribution variability. Further study using different models and explanatory variables may elucidate significant relationships between SST...

An assessment of the Sr/Ca ratio in shallow water hermatypic corals as a proxy for sea surface temperature

Marshall, Jerry; McCulloch, Malcolm
Fonte: Pergamon-Elsevier Ltd Publicador: Pergamon-Elsevier Ltd
Tipo: Artigo de Revista Científica
Relevância na Pesquisa
17.1%
The high precision measurement of the Sr/Ca ratio in corals has the potential for measuring past sea surface temperatures at very high accuracy. However, the veracity of the technique has been questioned on the basis that there is both a spatial and temporal variation in the Sr/Ca ratio of seawater, and that kinetic effects, such as the calcification rate, can affect the Sr/Ca ratio of corals, and produce inaccuracies of the order of 2-4 °C. In the present study, a number of cores of the massive hermatypic scleractinian coral Porites, from the central Great Barrier Reef, have been analyzed for Sr/Ca at weekly to monthly resolution. Results from a 24 year record from Myrmidon Reef show an overall variation from 22.7 °C to 30.4 °C. The record shows a warming/cooling trend with maximum warming centred on the 1986-1987 summer. While some bleaching was reported to have occurred at Myrmidon Reef in 1982, the Sr/Ca record indicates that subsequent summer temperatures were much higher. The 4.5 year record from Stanley Reef shows a maximum SST of 30 °C during the 1997-1998 El Niño event. The calibrations from Myrmidon and Stanley Reefs are in excellent agreement with previously published calibrations from nearby reefs. While corals do not calcify in equilibrium with seawater due to physiological control on the uptake of Sr and Ca into the lattice of coralline aragonite...

Análisis de equivalencia entre cuatro escalas de evaluación funcional del hombro en pacientes operados del manguito de los rotadores y en pacientes con diagnóstico de hombro doloroso: Estudio transversal y observacional

Patiño,Osvaldo; Beribé,Raúl; Bordachar,Diego; Intelangelo,Leonardo; Araya,Rodrigo
Fonte: Revista de la Asociación Argentina de Ortopedia y Traumatología Publicador: Revista de la Asociación Argentina de Ortopedia y Traumatología
Tipo: Artigo de Revista Científica Formato: text/html
Publicado em 01/03/2011 ES
Relevância na Pesquisa
17.1%
Introducción: El objetivo del presente estudio fue analizar el grado de confiabilidad concurrente entre cuatro escalas de valoración funcional en pacientes operados del manguito de los rotadores y en pacientes con diagnóstico de hombro doloroso. Materiales y métodos: Se estudiaron 40 pacientes: 23 operados por la rotura del manguito de los rotadores y 17 con diagnóstico de hombro doloroso. Las escalas utilizadas fueron: 1) prueba de la Universidad de California de los Ángeles (UCLA), 2) prueba sencilla del hombro (Simple Shoulder Test, SST), 3) prueba de Constant y Murley (C-M) y 4) escala del Colegio Americano de Cirujanos de Hombro y Codo (ASES). Se aplicaron todas las escalas a los 40 pacientes y se calculó el coeficiente de correlación intraclase (CCI) y el intervalo de confianza (IC) del 95% entre las escalas. Se consideró significativo un valor de p < 0,05. Resultados: En 26 casos (65%) el hombro afectado fue el dominante. Los CCI (IC 95%) entre las escalas fueron: SST contra Constant 0,39 (-15,3; 0,68); contra ASES 0,29 (-0,34; 0,62) y contra UCLA 0,56 (0,17; 0,77). Constant contra ASES 0,834 (0,69; 0,91) y contra UCLA 0,706 (0,44; 0,85). ASES contra UCLA 0,679 (0,39; 0,83). Conclusiones: Se observó una confiabilidad concurrente nula entre SST y C-M y entre SST y ASES; y moderada entre SST y UCLA...

Cambios fisicoquímicos poscosecha en tres cultivares de pepino con y sin película plástica

Moreno Velázquez,Delia; Cruz Romero,Wendy; García Lara,Erika; Ibañez Martínez,Armando; Barrios Díaz,Juan Manuel; Barrios Díaz,Benjamín
Fonte: Instituto Nacional de Investigaciones Forestales, Agrícolas y Pecuarias Publicador: Instituto Nacional de Investigaciones Forestales, Agrícolas y Pecuarias
Tipo: Artigo de Revista Científica Formato: text/html
Publicado em 01/09/2013 ES
Relevância na Pesquisa
17.1%
El pepino una vez recolectado en madurez comercial, empieza a experimentar rápidamente cambios metabólicos tendientes a la senescencia y muerte de los tejidos. El manejo poscosecha coadyuva en el mantenimiento de la calidad del producto hasta el consumidor final; dentro de los principales problemas poscosecha, se encuentra la pérdida de turgencia, y otros cambios físicos y químicos que demeritan la apariencia y calidad final; la velocidad de deterioro del fruto presenta comportamiento diferente de acuerdo a las condiciones de almacenamiento; así como de las condiciones de manejo. En el presente estudio, se evaluó la calidad poscosecha de tres cultivares de pepino fresco, Zapata, Constable y Lider, con y sin recubrimiento de película plástica comercial Cryovac® RD 45, almacenados por quince días a temperatura ambiente. Cada tres días, se midió pérdida de peso, sólidos solubles totales (SST), pH, acidez titulable, relación SST-acidez titulable y contenido de clorofila a, b y total. La pérdida de peso fue menor al 1% en los tres cultivares de pepino con película plástica y alrededor de 8% en los tres cultivares sin película plástica. La relación SST-acidez titulable no resultó ser un indicativo de calidad. Los pepinos cultivar Constable con película plástica mantuvieron el mayor contenido de clorofila a...

Caracterización de frutos de ciruela mexicana (Spondias purpurea L.) del sur de México

Alia-Tejacal,Irán; Astudillo-Maldonado,Yanik I.; Núñez-Colín,Carlos A.; Valdez-Aguilar,Luis A.; Bautista-Baños,Silvia; García-Vázquez,Enrique; Ariza-Flores,Rafael; Rivera-Cabrera,Fernando
Fonte: Sociedad Mexicana de Fitogenética A.C. Publicador: Sociedad Mexicana de Fitogenética A.C.
Tipo: Artigo de Revista Científica Formato: text/html
Publicado em 01/09/2012 ES
Relevância na Pesquisa
17.1%
Sesenta y siete colectas de ciruela mexicana (Spondias purpurea L.) de los Estados de Guerrero, Morelos y Chiapas fueron evaluadas en sus características de fruto en masa, dimensiones, componentes del color (L*, C* y H*), sólidos solubles totales (SST), acidez titulable (AT) y la proporción SST/AT. La masa del fruto, el ángulo matiz (H*) y la proporción SST/AT tuvieron los mayores coeficiente de variación (CV: 50-60 %) y contribuyeron a la formación de siete grupos. La masa de los frutos varió de 4.0 a 43.2 g; el color desde rojo (H* = 15) hasta con tendencia al verde (H* = 105), mientras que la SST/AT varió entre 3.0 y 63.2; está última debido a la variación en SST (entre 3.2 y 17.3 °Brix) y en AT (entre 0.2 y 2.0 %). Estos resultados evidencian una alta variabilidad entre las colectas estudiadas y alguna con potencial para su utilización hortícola.