11,460 research outputs found
Science-religion dialogue in education: religion teachers’ perceptions in a roman-catholic context
This paper examines the relationship between science and religion in the education system of Roman-Catholic Portuguese society. In particular, we explored perceptions of the relationship between science and religion for religious education teachers. We surveyed 198 Portuguese religious education teachers about how they view science and religion. The questionnaires’ results revealed a number of similarities: religious education teachers are highly involved in religious practices and exposed to science; they perceived a compatibility between science and religion; and they have an openness to dialogue between both. They do not adhere to anti-scientific perspectives, but they simultaneously try to limit what can be explained by science. Thus, an interpretative view of dialogue and/or integration seems to best explain the perceptions of religious education teachers of the relationship between science and religion. These findings allow a space of discussion, enabling teachers to possibly foster the science-religion dialogue in their contexts of pedagogical activity.info:eu-repo/semantics/acceptedVersio
Incompatibility of 'Cleopatra' mandarin rootstock for grafting citrus in Central Amazon, State of Amazonas, Brazil.
ABSTRACT: In sweet orange ?Pêra-Rio? and acid lime ?Tahiti? citrus plants (Citrus spp.) stalked on ?Cleopatra? mandarin, a necrosis in the grafting point was observed, causing plant death and dry fruits. Aiming to identify the causes of changes in the rootstock, which lead to grafting incompatibility, an anatomical study comparing plants with and without symptoms, stalked on Rangpur lime, was performed. In addition, the plant nutritional conditions and soil fertility of orchards were evaluated. Necrotic processes caused by vascular discontinuity between the crown and the rootstock were the main causes of loss in productivity and fruit quality. The incompatibility between the rootstock with the crown of ?Pêra-Rio? orange or ?Tahiti? lime causes plant nutritional imbalance that is not related to low natural fertility of the soil in the region. The results indicated problems in the use of ?Cleopatra? mandarin rootstock with the soil and climatic conditions of the Central Amazon region. Incompatibilidade de enxertia de base com tangerineira ?Cleópatra? em citros na Amazônia Central, Estado do Amazonas. RESUMO: Em plantas de laranjeira ?Pêra-Rio? e de lima ácida ?Tahiti? (Citrus spp.) enxertadas sobre tangerineira ?Cleópatra?, observaram-se uma necrose do ponto de enxertia, a morte das plantas e os frutos secos. Com o objetivo de detectar as causas das alterações no porta-enxerto que levaram à incompatibilidade de enxertia, realizou-se um estudo anatômico comparativo entre plantas com sintomas e plantas sem sintomas enxertadas sobre limão ?Cravo?, avaliando-se também o estado nutricional e a fertilidade do solo dos pomares. Processos necróticos ocasionados por descontinuidade vascular entre a copa e o porta-enxerto foram os principais fatores que levaram a perdas da produtividade e da qualidade dos frutos. A incompatibilidade entre o porta-enxerto e a copa de laranjeira ?Pêra-Rio? ou a lima ácida ?Tahiti? acarreta distúrbio nutricional que não tem relação com a baixa fertilidade do solo da região. Os resultados indicaram problemas no uso de tangerineira ?Cleópatra? como porta-enxerto nas condições edafoclimáticas da Amazônia Central
Anomalous pressure effect on the magnetic ordering in multiferroic BiMnO3
We report the magnetic field dependent dc magnetization and the
pressure-dependent (pmax ~ 16 kbar) ac susceptibilities Xp(T) on both powder
and bulk multiferroic BiMnO3 samples, synthesized in different batches under
high pressure. A clear ferromagnetic (FM) transition is observed at TC ~ 100 K,
and increases with magnetic field. The magnetic hysteresis behavior is similar
to that of a soft ferromagnet. Ac susceptibility data indicate that both the FM
peak and its temperature (TC) decrease simultaneously with increasing pressure.
Interestingly, above a certain pressure (9 ~ 11 kbar), another peak appears at
Tp ~ 93 K, which also decreases with increasing pressure, with both these peaks
persisting over some intermediate pressure range (9 ~ 13 kbar). The FM peak
disappears with further application of pressure; however, the second peak
survives until present pressure limit (pmax ~ 16 kbar). These features are
considered to originate from the complex interplay of the magnetic and orbital
structure of BiMnO3 being affected by pressure.Comment: 4 pages,4 figures, publised in Physical Review B 78, 092404/200
Pastos e manejo do pastejo de áreas dependentes de chuva.
Sistemas pecuários de produção em condições de sequeiro. Manipulação da vegetação da caatinga para exploração pecuária. Caatinga rebaixada. Caatinga raleada. Caatinga rebaixada-raleada. Caatinga enriquecida. Caatinga desmatada. Sugestões de modelos de exploração e de tecnologias com potencial para manter a sustentabilidade da produção agropecuária. Sistemas sem uso da caatinga e com espécies forrageiras cultivadas. Sistemas com uso da caatinga para produção animal. Sistemas com uso da caatinga para produção animal. Espécies de forrageiras apropriadas para exploração em áreas de sequeiro
Infrared phonon dynamics of multiferroic BiFeO3 single crystal
We discuss the first infrared reflectivity measurement on a BiFeO3 single
crystal between 5 K and room temperature. The 9 predicted ab-plane E phonon
modes are fully and unambiguously determined. The frequencies of the 4 A1
c-axis phonons are found. These results settle issues between theory and data
on ceramics. Our findings show that the softening of the lowest frequency E
mode is responsible for the temperature dependence of the dielectric constant,
indicating that the ferroelectric transition in BiFeO3 is soft-mode driven.Comment: 5 pages (figures included
Development and use of touch-screen computer-assisted self interviewing in Portuguese patients with chronic immune diseases: Evaluation of an electronic version of SF-36v2
Abstract
Aim:The major purpose of this study was to evaluate
alternative automated methods of collecting data
on health related quality of life (HR-QoL). In order
to achieve this, we developed a study with the following
objectives: (1) to evaluated the feasibility of
electronic version in patients with different chronic
pathologies of the immune system using Short Form
36version2 (SF-36v2), (2) to evaluate the construct
validity of SF-36v2 using the electronic data capture,
and (3) to compare electronic version questionnaires
with paper questionnaires in terms of patients
´ acceptance, data quality, and reliability.
Methods:Out-patients with chronic immune diseases
(HIV infection, lupus, scleroderma, rheumatoid
arthritis, Behçet and Sjögren), were randomly
selected to completed electronic and paper SF-
36v2 (n=50) before consultation in Clinical Immunology
Unit, in Hospital Santo António-Centro
Hospitalar do Porto (CI-HGSA).
Results: There were very high correlations in SF-
36v2 responses (p< .001) between the paper and
electronic forms. Internal reliability coefficients
(Cronbach’s a) showed good internal consistency
for all reported responses in either, computer and
paper. There were no missing data in electronic version
or paper. About 84% of the patients prefer to use the computer version in future.
Conclusion: The electronic HR-QoL assessment is
technically possible and it can provide reliable and
valid clinically significant information which can
either be used in routine care appointments
Fatores que diferenciam os resultados economicos dos colonos: o caso do perimetro irrigado de Bebedouro.
O Submedio Sao Francisco vem conhecendo, nos ultimos vinte anos, um desenvolvimento consideravel gracas, principalmente, a agricultura irrigada. Nas areas de irrigacao publica onde foram assentados um grande numero de familias de baixa renda, esse desenvolvimento nao tem se dado de forma uniforme para todos os colonos e as razoes apresentadas sao diversas. No Perimetro Irrigado de Bebedouro, primeiro perimetro publico a ser instalado nessa regiao, a despeito de um numero de colonos apresentarem um bom desempenho economico, uma parcela significativa daqueles produtores nao tem evoluido como se esperava. Buscando conhecer as principais razoes que diferenciam esses dois grupos fez-se entrevistaa, com 108 (85,71%) dos 126 colonos ali existentes e atraves de analise estatistica, usando o teste "t" de Student, foram avaliadas as variaveis que mais diferiam estatisticamente onde se destacaram: tamanho da area irrigada, tamanho da area com cultivos perenes, area plantada com videira, produtividade da videira, quantidade de rebanho bovino, experiencia com agricultura irrigada, treinamento recebido e capacidade gerencial
Adaptação do arroz de terras altas no sistema plantio direto: manejo da adubação nitrogenada.
Com o objetivo de identificar a dose mais adequada de adubação nitrogenada para o arroz no sistema plantio direto após pastagem e soja, desenvolveu-se este trabalho.bitstream/item/59052/1/Foco-46.pd
Stabilization of heterodimensional cycles
We consider diffeomorphisms with heteroclinic cycles associated to
saddles and of different indices. We say that a cycle of this type can
be stabilized if there are diffeomorphisms close to with a robust cycle
associated to hyperbolic sets containing the continuations of and . We
focus on the case where the indices of these two saddles differ by one. We
prove that, excluding one particular case (so-called twisted cycles that
additionally satisfy some geometrical restrictions), all such cycles can be
stabilized.Comment: 31 pages, 9 figure
Evaluation of dry bean genotypes for phosphorus use efficiency in tropical acid soil.
Dry bean is an important legume for South American population and phosphorus deficiency is most yield limiting nutrient for crop production in South American soils. A greenhouse experiment was conducted with the objective to evaluate influence of P fertilization on dry matter and grain yield of 30 dry bean genotypes. The P levels used were O mg P kq and 200 mg P kg' soil. Dry matter and grain yield were significantly influenced with P as well as genotype treatments. The P X genotype interaction was also significant for these traits, indicating different responses of genotypes at two P levels
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