BRSMG Alterosa: cultivar de arroz para plantio em várzeas mineiras.

O processo de indicação de cultivares de arroz para plantios comerciais é contínuo e dinâmico, periodicamente recomendam-se novas cultivares em substituição àquelas menos produtivas e/ou com menor aceitação comercial. É dentro desta linha de ação que a EPAMIG e a Embrapa Arroz e Feijão, por meio do Programa de Melhoramento Genético de Arroz Irrigado, testa a cada ano diversas linhagens e cultivares, em diferentes locais de Minas Gerais, visando oferecer as melhores opções aos orizicultores, no que tange à escolha de cultivares apropriadas às suas lavouras cultivadas em várzeas

Determinação de atributos físicos do solo em solos arenosos por meio de Georadar.

A região central do Brasil é a sua atual fronteira agrícola, com rápida expansão das culturas de soja, café e algodão sob solos arenosos. Entre os grandes desafios de manejo desse tipo de solo , destaca-se evitar a redução da sua baixa fertilidade natural e manter ou aumentar a umidade. Esse trabalho teve o objetivo de avaliar a aplicabilidade do uso de Radar de Penetração do Solo (GPR) na determinação de atributos de solos arenosos da parte central do Brasil. O estudo foi realizado no Oeste do estado da Bahia, numa área de topografia plana e sob pastagem. Foram amostrados dois perfis completos, cujas amostras foram analisadas química e fisicamente. A leitura foi realizada em transectos com comprimento acima de 500m. Foi utilizado GPR equipado com antena de 400 MHz. Foram aplicadas as equações de Topp, Ledieu e Condé para determinação da umidade gravimétrica a partir de valores de constante dielétrica obtidas dos radargramas. Foi observado tratar-se de solos profundos, sem impedimentos físicos e que apresenta aumento da umidade em profundidad

Nuclear charge radius of 8^8He

The root-mean-square (rms) nuclear charge radius of ^8He, the most neutron-rich of all particle-stable nuclei, has been determined for the first time to be 1.93(3) fm. In addition, the rms charge radius of ^6He was measured to be 2.068(11) fm, in excellent agreement with a previous result. The significant reduction in charge radius from ^6He to ^8He is an indication of the change in the correlations of the excess neutrons and is consistent with the ^8He neutron halo structure. The experiment was based on laser spectroscopy of individual helium atoms cooled and confined in a magneto-optical trap. Charge radii were extracted from the measured isotope shifts with the help of precision atomic theory calculations

Scale relativity and fractal space-time: theory and applications

In the first part of this contribution, we review the development of the theory of scale relativity and its geometric framework constructed in terms of a fractal and nondifferentiable continuous space-time. This theory leads (i) to a generalization of possible physically relevant fractal laws, written as partial differential equation acting in the space of scales, and (ii) to a new geometric foundation of quantum mechanics and gauge field theories and their possible generalisations. In the second part, we discuss some examples of application of the theory to various sciences, in particular in cases when the theoretical predictions have been validated by new or updated observational and experimental data. This includes predictions in physics and cosmology (value of the QCD coupling and of the cosmological constant), to astrophysics and gravitational structure formation (distances of extrasolar planets to their stars, of Kuiper belt objects, value of solar and solar-like star cycles), to sciences of life (log-periodic law for species punctuated evolution, human development and society evolution), to Earth sciences (log-periodic deceleration of the rate of California earthquakes and of Sichuan earthquake replicas, critical law for the arctic sea ice extent) and tentative applications to system biology.Comment: 63 pages, 14 figures. In : First International Conference on the Evolution and Development of the Universe,8th - 9th October 2008, Paris, Franc

The Zulliger-CS in Elderly on Hemodialysis and the Relationship Between External Variables

Abstract: The use of reliable instruments is an ethical condition to exert psychological evaluation. The aim of the study was to investigate the validity of the Zulliger test in the evaluation of elderly with chronic kidney disease (CKD) with focus on cognitive constructs and interpersonal relationshipsof elderly with Chronic Kidney Disease; and investigate the relationship with external variables. The 60 participants, 30 from the Clinical Group (CG) and 30 from the Non-Clinical Group (NCG), answered a socio-demographic protocol, the Mini-Mental State Examination and the Zulligertest in the Comprehensive System. The CG presented decrease of variables Xu% (p = .031,d = .58), R (p = .002,d = .78), Fd (p = .021,d = .65) and isolation (p = .006,d = .61), rise in X-%, and PHR>GHR. There was a positive association between time since diagnosis and family support (rho = .403,p = .027). Findings confirm the relevance of the Zulligertest and family support as a health potentiator

NEOTROPICAL XENARTHRANS: a data set of occurrence of xenarthran species in the Neotropics

Xenarthrans – anteaters, sloths, and armadillos – have essential functions for ecosystem maintenance, such as insect control and nutrient cycling, playing key roles as ecosystem engineers. Because of habitat loss and fragmentation, hunting pressure, and conflicts with 24 domestic dogs, these species have been threatened locally, regionally, or even across their full distribution ranges. The Neotropics harbor 21 species of armadillos, ten anteaters, and six sloths. Our dataset includes the families Chlamyphoridae (13), Dasypodidae (7), Myrmecophagidae (3), Bradypodidae (4), and Megalonychidae (2). We have no occurrence data on Dasypus pilosus (Dasypodidae). Regarding Cyclopedidae, until recently, only one species was recognized, but new genetic studies have revealed that the group is represented by seven species. In this data-paper, we compiled a total of 42,528 records of 31 species, represented by occurrence and quantitative data, totaling 24,847 unique georeferenced records. The geographic range is from the south of the USA, Mexico, and Caribbean countries at the northern portion of the Neotropics, to its austral distribution in Argentina, Paraguay, Chile, and Uruguay. Regarding anteaters, Myrmecophaga tridactyla has the most records (n=5,941), and Cyclopes sp. has the fewest (n=240). The armadillo species with the most data is Dasypus novemcinctus (n=11,588), and the least recorded for Calyptophractus retusus (n=33). With regards to sloth species, Bradypus variegatus has the most records (n=962), and Bradypus pygmaeus has the fewest (n=12). Our main objective with Neotropical Xenarthrans is to make occurrence and quantitative data available to facilitate more ecological research, particularly if we integrate the xenarthran data with other datasets of Neotropical Series which will become available very soon (i.e. Neotropical Carnivores, Neotropical Invasive Mammals, and Neotropical Hunters and Dogs). Therefore, studies on trophic cascades, hunting pressure, habitat loss, fragmentation effects, species invasion, and climate change effects will be possible with the Neotropical Xenarthrans dataset