Instalações rurais e práticas de bem-estar animal em propriedades rurais no município de Dom Pedrito-RS.

O objetivo deste trabalho foi analisar as práticas de bem-estar animal em dez propriedades rurais no município de Dom Pedrito-RS. Avaliou-se as conformidades e não-conformidades através dos princípios abordados no Programa de Boas Práticas Agropecuárias (BPA) desenvolvido pela Empresa Brasileira de Pesquisa Agropecuária (Embrapa).Editora técnica Claudia Cristina Gulias Gomes

SUNDAE2 at EuXFEL: A Test Stand to Characterize the Magnetic Field of Superconducting Undulators

European XFEL foresees a superconducting undulator (SCU) afterburner in the SASE2 hard X-ray beamline. It consists of six 5m-long undulator modules with a 5mm vacuum gap, where each module contains two 2m-long coils and one phase shifter. Prior to installation, the magnetic field must be mapped appropriately. Two magnetic measurement test stands named SUNDAE 1 and 2 (Superconducting UNDulAtor Experiment) are being developed at European XFEL. While SUNDAE1 will be a vertical test stand to measure SCU coils up to two meters with Hall probes in a liquid or superfluid helium bath, SUNDAE2 will measure the SCU coils assembled in the final cryostat. This contribution presents the development status of SUNDAE2 and its main requirements

Instalações rurais e práticas de bem-estar animal na produção de bovinos de corte em propriedades rurais do município de Dom Pedrito-RS.

O presente trabalho tem por objetivos analisar as instalações rurais e as práticas de manejo que favoreçam o bem-estar animal na produção de bovinos de corte implantadas em propriedades rurais no município de Dom Pedrito, Rio Grande do Sul. Foram coletados dados de dez propriedades com o auxílio de um formulário de Boas Práticas Agropecuárias (BPA) da Empresa Brasileira de Pesquisa Agropecuária (EMBRAPA), adaptado aos propósitos do trabalho. Considerou-se, para esta análise, as características estruturais das paredes do brete, seringa, embarcadouro e estado de conservação do curral. As práticas de manejo consideradas foram relacionadas aos aspectos sanitários e de embarque dos animais. As instalações, manejo sanitário e de embarque apresentaram, respectivamente, 58%, 62% e 47% de conformidade para o favorecimento do bem-estar dos animais. Constatou-se que as instalações, mesmo antigas, podem, com alguns ajustes, atender as necessidades básicas para um bom manejo com os animais. Entretanto, as consequências de práticas de manejo inadequadas no bem-estar animal e na qualidade do produto final devem ser melhor disseminadas nas propriedades rurais

Magnetotelluric monitoring of a fluid injection: example from an enhanced geothermal system

Enhanced geothermal systems (EGS) are on the verge of becoming commercially viable for power production, where advancements in subsurface characterization are imperative to develop EGS into a competitive industry. Theory of an EGS is simple, pump fluids into thermally enhanced lithology and extract the hot fluids to produce energy. One significant complication in EGS development is estimating where injected fluids flow in the subsurface. Micro-seismic surveys can provide information about where fractures opened, but not fracture connectivity nor fluid inclusion. Electromagnetic methods are sensitive to conductivity contrasts and can be used as a supplementary tool to delineate reservoir boundaries. In July, 2011, an injection test for a 3.6 km deep EGS at Paralana, South Australia was continuously monitored by both micro-seismic and magnetotellurics (MT). Presented are the first results from continuous MT measurements suggesting transient variations in subsurface conductivity structure generated from the introduction of fluids at depth can be measured. Furthermore, phase tensor representation of the time dependent MT response suggests fluids migrated in a NE direction from the injection well. Results from this experiment supports the extension of MT to a monitoring tool for not only EGS but other hydraulic stimulations.J.R. Peacock, S. Thiel, P. Reid and G. Heinso

Current European Labyrinthula zosterae Are Not Virulent and Modulate Seagrass (Zostera marina) Defense Gene Expression

Pro- and eukaryotic microbes associated with multi-cellular organisms are receiving increasing attention as a driving factor in ecosystems. Endophytes in plants can change host performance by altering nutrient uptake, secondary metabolite production or defense mechanisms. Recent studies detected widespread prevalence of Labyrinthula zosterae in European Zostera marina meadows, a protist that allegedly caused a massive amphi-Atlantic seagrass die-off event in the 1930's, while showing only limited virulence today. As a limiting factor for pathogenicity, we investigated genotype×genotype interactions of host and pathogen from different regions (10–100 km-scale) through reciprocal infection. Although the endophyte rapidly infected Z. marina, we found little evidence that Z. marina was negatively impacted by L. zosterae. Instead Z. marina showed enhanced leaf growth and kept endophyte abundance low. Moreover, we found almost no interaction of protist×eelgrass-origin on different parameters of L. zosterae virulence/Z. marina performance, and also no increase in mortality after experimental infection. In a target gene approach, we identified a significant down-regulation in the expression of 6/11 genes from the defense cascade of Z. marina after real-time quantitative PCR, revealing strong immune modulation of the host's defense by a potential parasite for the first time in a marine plant. Nevertheless, one gene involved in phenol synthesis was strongly up-regulated, indicating that Z. marina plants were probably able to control the level of infection. There was no change in expression in a general stress indicator gene (HSP70). Mean L. zosterae abundances decreased below 10% after 16 days of experimental runtime. We conclude that under non-stress conditions L. zosterae infection in the study region is not associated with substantial virulence