Effective field theory of the deuteron with dibaryon field

Pionless effective field theory with dibaryon fields is reexamined for observables involving the deuteron. The electromagnetic form factors of the deuteron and the total cross sections of radiative neutron capture on the proton, $np \to d\gamma$, are calculated. The low energy constants of vector(photon)-dibaryon-dibaryon vertices in the effective lagrangian are fixed primarily by the one-body vector(photon)-nucleon-nucleon interactions. This scheme for fixing the values of the low energy constants satisfactorily reproduces the results of the effective range theory. We also show that, by including higher order corrections, one can obtain results that are close to those of Argonne v18 potential model.Comment: 25 pages and 11 figures; 16 references added, Figure 6 and 7 replotted, text revised a lot. To be published in Phys. Rev.

Quenching of the Deuteron in Flight

We investigate the Lorentz contraction of a deuteron in flight. Our starting point is the Blankenbecler-Sugar projection of the Bethe-Salpeter equation to a 3-dimensional quasi potential equation, wqhich we apply for the deuteron bound in an harmonic oscillator potential (for an analytical result) and by the Bonn NN potential for a more realistic estimate. We find substantial quenching with increasing external momenta and a significant modification of the high momentum spectrum of the deuteron.Comment: 11 pages, 4 figure

Expansão da cafeicultura na porção leste do estado de São Paulo.

Our aim in this work was to map the main land-use and land-cover changes at 25 cities located at the watersheds of the Mogi-Guaçu and Pardo rivers over the last 27 years. We focused on coffee and sugarcane crops at these region, known as Mogiana Paulista. We updated the sugarcane crop areas to the year 2015 using maps produced by the Canasat project. For land-use and land-cover classification of these 25 cities in 2015 we used a Google Earth image file in a GIS environment. The method we used was on-screen visual image interpretation of high-spatial-resolution images, which were later compared to data from 1988. Along the 27- year period, coffee crops expanded approximately 80%, from 67.3 thousand to 123.8 thousand hectares. The 25 cities which are the main coffee producers at Mogiana Paulista showed concentration of coffee crops, which make up a total of approximately 111 thousand hectares. Both coffee and sugarcane may still advance onto parts of these cities' areas that are currently used as pastures, which the land-cover that loses more areas. Pastures still occupy 322 thousand hectares, or about 30% of the area of these 25 cities, and 252 thousand of these hectares feature slope degrees which are adequate for the mechanized harvesting of both sugarcane and coffee

Uso de Geotecnologias na detecção de potenciais Áreas de Preservação Permanente e Reserva Legal na Região Administrativa Central do Estado de São Paulo.

Our objective in this work was to estimate, using geoprocessing techniques, the amount of permanent preservation areas (APPs) at the rural areas of the cities that are part of the Central Administrative Region of the State of São Paulo in the year 2016, to verify its adequacy to the New Brazilian Forest Code and to estimate, by means of land use and cover classification, the environmental liabilities for legal reserve (RL) areas in the region's cities. We additionally detected sugarcane crops in terrains with slope degrees higher than 12% and which will no longer be used for crops, in accordance with law decree 47.700/SP, and may therefore indicate areas which are viable for use as RLs, thus helping reduce the region's environmental liabilities. Our results show that the region contains 30.492,6 ha of environmental liabilities in APP areas and 27,493.6 ha in RL areas. Current sugarcane areas with potential to become RLs comprise 35,630.6 ha. The APP and RL areas are unevenly distributed across the region. Some cities showed no environmental liabilities, whereas others could reconcile or reduce theirs by 14.5% to 79.5% by using the areas that will no longer be used for sugarcane crops

Uso de Geotecnologias para avaliação da adequação ambiental referente às Áreas de Preservação Permanente e Reserva Legal no Município de Ribeirão Preto - SP.

No presente trabalho, através de técnicas de geoprocessamento, buscou-se delimitar as APPs na área rural do município de Ribeirão Preto, no nordeste do Estado de São Paulo, no ano de 2014 e verificar sua adequação segundo o Novo Código Florestal Brasileiro e identificar, através da classificação do uso e cobertura do solo, qual o passivo ambiental relativo às áreas de Reserva Legal no município

Trabalhando com dados espaciais no QGIS 2.18.4.

O QGIS é um programa computacional que, além de ser um SIG, também permite gerar bancos de dados e fazer tratamentos e análises de dados espaciais. Isso ocorre porque todo SIG permite dispor, em camadas ou planos de informação (PI), vários dados georreferenciados, os quais podem pertencer a diferentes classes (vetoriais, matriciais, alfanuméricos, etc.).bitstream/item/178570/1/4918.pd

Espacialização de indicadores socioeconômicos como subsídio ao macrozoneamento ecológico-econômico do Estado do Maranhão.

Macrozoneamentos ecológico-econômicos foram instituídos pelo governo federal e têm como finalidade identificar potencialidades e limitações de recursos naturais e da sociedade com base em um diagnóstico socioambiental e com o propósito de apoiar a formulação e execução de políticas de desenvolvimento regional . Indicadores socioeconômicos são instrumentos importantes em todas as fases do processo de formulação, implementação, monitoramento e avaliação das políticas públicas, e são elementos indispensáveis para a elaboração de macrozoneamentos ecológico-econômicos . O objetivo deste trabalho foi espacializar indicadores socioeconômicos que serão utilizados como subsídio para a elaboração do Macrozoneamento Ecológico-Econômico do Estado do Maranhão. Foram adotados, como unidade de referência territorial, os 217 municípios que compõem o estado e, como fonte de dados, a Produção Agrícola Municipal (PAM) do IBGE e o Censo Demográfico do IBGE. Foram selecionados os principais indicadores socioeconômicos, como saneamento básico, energia, água potável, saúde, educação, entre outros. O procedimento metodológico utilizado foi: definição e levantamento dos indicadores; criação e formatação das tabelas com auxílio do programa Excel; e, por fim, a utilização do software ArcGIS (ESRI), que, por meio das planilhas criadas, dos geocódigos municipais e dos shapefile disponibilizados pelo IBGE, possibilitou espacializar os dados e, assim, gerar os mapas temáticos. A espacialização dos indicadores pode contribuir para a formulação de políticas públicas em diferentes níveis de governo e, assim, para que sejam tomadas decisões mais adequadas

Location of laccase in ordered mesoporous materials

The functionalization with amine groups was developed on the SBA-15, and its effect in the laccase immobilization was compared with that of a Periodic Mesoporous Aminosilica. A method to encapsulate the laccase in situ has now been developed. In this work, spherical aberration (Cs) corrected scanning transmission electron microscopy combined with high angle annular dark field detector and electron energy loss spectroscopy were applied to identify the exact location of the enzyme in the matrix formed by the ordered mesoporous solids

Calibration of pelagic stereo-BRUVs and scientific longline surveys for sampling sharks

Our understanding of the ecology of sharks and other highly mobile marine species often relies on fishery-dependent data or extractive fishery-independent techniques that can result in catchability and size-selectivity biases. Pelagic Baited Remote Underwater stereo-Video Systems (pelagic stereo-BRUVs) provide a standardized, non-destructive and fishery-independent approach to estimate biodiversity measures of fish assemblages in the water column. However, the performance of this novel method has not yet been assessed relative to other standard sampling techniques. We compared the catch composition, relative abundance and length distribution of fish assemblages sampled using pelagic stereo-BRUVs and conventional scientific longline surveys. In particular, we focused on sharks of the family Carcharhinidae (requiem sharks) to assess the sampling effectiveness of this novel technique along a latitudinal gradient off the coast of Western Australia. We calibrated the sampling effort required for each technique to obtain equivalent samples of the target species and discuss the advantages, limitations and potential use of these methods to study highly mobile species.The proportion of sharks sampled by pelagic stereo-BRUVs and scientific longline surveys was comparable across the latitudinal gradient. Carcharhinus plumbeus was the most abundant species sampled by both the techniques. Longline surveys selected larger individuals of the family Carcharhinidae in comparison with the length distribution data obtained from pelagic stereo-BRUVs. However, the relative abundance estimates (catch per unit of effort) from the pelagic stereo-BRUVs were comparable to those from 5 to 30 longline hooks. Pelagic stereo-BRUVs can be calibrated to standard techniques in order to study the species composition, behaviour, relative abundance and size distribution of highly mobile fish assemblages at broad spatial and temporal scales. This technique offers a non-destructive fishery-independent approach that can be implemented in areas that may be closed to fishing and is suitable for studies on rare or threatened species