La tristeza del amo /

Mode of access: Internet.

Experimentelle studien über das Texasfieber der rinder (la tristeza) in den La Plata staaten ...

Issued also as the author's thesis, Leipzig.

La garrapata que produce la fiebre bovina o tristeza. Lo que todo niño campesino debe saber acerca de la garrapata que ataca al ganado vacuno. Libro ilustrado con excelentes grabados que muestran cómo las garrapatas que transmiten dicha fiebre le roban leche, carne y dinero a los agricultores y ganaderos, y les matan miles de cabezas de ganado.

Issued by the Bureau of Animal Industry.

Efecto del contexto verbal en el reconocimiento de la expresión de alegría y tristeza

El reconocimiento de las emociones supone la integración de los aspectos físicos relativos a los movimientos de la musculatura facial, pero también y desde diferentes enfoques se da relevancia al contexto que rodea a dicha expresión en el momento de ser percibida. En la presente investigación se analizó el papel del contexto verbal sobre el reconocimiento de la expresión facial de alegría y tristeza. Participaron 50 sujetos a los que se les pidió que visualizaran expresiones mixtas neutras rodeadas por cinco palabras positivas, negativas o neutras (contexto verbal), que describían la vida de dicha persona (fase I). Posteriormente se les presentaron durante 39 milisegundos expresiones faciales mixtas de alegría o tristeza de las mismas personas que aparecieron en la fase anterior para que decidieran lo más rápido posible si la emoción expresada era de alegría o tristeza (fase II). Los resultados mostraron un peor reconocimiento de la expresión de tristeza respecto a la de alegría cuando el contexto verbal previo era positivo. Por otro lado, la expresión de tristeza se reconoció mejor cuando iba precedida de un contexto verbal negativo respecto a cuando era positivo. Se discuten los resultados dentro del modelo constructivista de la emoción.

Imagens das emoções na infância: Representações sociais da alegria e da tristeza entre crianças em idade pré-escolar

As crianças são muito sensíveis a qualquer mudança no meio familiar ou social. O modo como apreendem, vivenciam e exprimem emoções ou sentimentos, em interacção com o meio - pais, professores e colegas determina, em muito, o seu desenvolvimento, nomeadamente a nível cognitivo, emocional e social. Nesta investigação averiguámos as representações sociais dos sentimentos, em particular da alegria e da tristeza, entre crianças com 5 e 6 anos, de ambos os sexos, que frequentam Jardins de Infância em Lisboa. Enquadrámos teoricamente a investigação na teoria das Representações Sociais (e.g. Moscovici,1976). Os dados foram recolhidos através de desenhos e por associação livre de palavras, a questões colocadas individualmente às crianças, e tratados através de AFO. Os resultados revelaram bastante acerca dos sentimentos das crianças, o que também nos estimula a reflectir sobre o modo mais cuidado para actuar com elas, contribuindo para o seu bem-estar psíquico e social, e aprendizagem. ABSTRACT; Children are deeply sensitive to any change in the family or social environment. The way in which they perceive, experience, and express emotions or feelings when interacting with the environment - parents, teachers, and fellow students - largely determines their development namely on a cognitive, emotional and social level. This research examines the social representations of feelings, particularly of joy and sadness, among children aged 5 and 6 years old, of the both sexes, and attending Kindergartens in Lisbon. On a theoretical perspective, the empirical research is framed on the Social Representations theory (e.g., Moscovici,1976). The data was gathered using drawings and free association, from questions individually made to the children, and examined through FCA2. The results showed quite a lot about the feelings of the children, which also leads us to reflect on the most careful way to act with them, as to contribute to their psychic and social well being, as well as their learning

Retrato do Brasil, uma leitura historiográfica do ensaio sobre a tristeza brasileira

Este artigo objetiva analisar as características da obra Retrato do Brasil, de Paulo Prado, escrita em 1928, a partir de uma crítica historiográfica. Traçamos as condições de escrita da mesma, situando-a na conjuntura de transformações socioeconômicas do final da Primeira República, descrevendo também suas particularidades enquanto interpretação possível da nação e da formação do sentimento de identidade nacional.

Tristeza y escepticismo, dos graves epidemias : la tragedia

Fondo Margaritainés Restrepo

Avaliação da resposta imune de camundongos BALB/c a uma proteína recombinante visando o desenvolvimento de vacina contra tristeza parasitária bovina

2015

Diagnóstico molecular de tristeza parasitária bovina em rhipicephalus microplus da região tropical do méxico / molecular diagnosis of cattle tick fever agents in rhipicephalus microplus from tropical region of mexico

2016

Purification and Properties of Closteroviruslike Particles Associated with Grapevine Corky Bark Disease

Closteroviruslike particles, designated as grapevine corky bark-associated virus (GCBaV), were purified from mature leaves and stem phloem tissue of a corky bark-affected grapevine that had indexed negative for other grapevine viruses. Electron microscopy of purified preparations revealed the presence of flexuous rod-shaped viruslike particles that were about 13 nm in diameter and between 1,400 and 2,000 nm long, with a helical pitch of 3.4 nm. In purified preparations, the GCBaV particles degraded within a few weeks, unlike grapevine leafroll associated virus (GLRaV), which was stable for more than 1 mo under the same storage condition. The molecular weight of the coat protein of GCBaV was 24,000. A large dsRNA molecule (about 15.3 kbp), along with lower molecular weight species, was detected in tissues of corky bark-diseased grapevines, but not in healthy grapevines. Polyclonal antisera were produced in rabbits against purified or partially purified virus preparations. In direct enzyme-linked immunosorbent assay (ELISA), antisera to GCBaV did not react to the serologically distinct types (II and III) of the long closteroviruses associated with grapevine leafroll disease and grapevine virus A (GVA), and vice versa. This antiserum also reacted in ELISA with other corky bark-affected grapevines. Our data suggest that closteroviruslike particles, designated as GCBaV, may be the causal agent of corky bark disease. However, definitive proof is still lacking. The inclusion of GCBaV in the group of closteroviruses with citrus tristeza virus is proposed.

Development of salinity tolerance in rice by constitutive-overexpression of genes involved in the regulation of programmed cell death

Environmental factors contribute to over 70% of crop yield losses worldwide. Of these drought and salinity are the most significant causes of crop yield reduction. Rice is an important staple crop that feeds more than half of the world’s population. However among the agronomically important cereals rice is the most sensitive to salinity. In the present study we show that exogenous expression of anti-apoptotic genes from diverse origins, AtBAG4 (Arabidopsis), Hsp70 (Citrus tristeza virus) and p35 (Baculovirus), significantly improves salinity tolerance in rice at the whole plant level. Physiological, biochemical and agronomical analyses of transgenic rice expressing each of the anti-apoptotic genes subjected to salinity treatment demonstrated traits associated with tolerant varieties including, improved photosynthesis, membrane integrity, ion and ROS maintenance systems, growth rate, and yield components. Moreover, FTIR analysis showed that the chemical composition of salinity-treated transgenic plants is reminiscent of non-treated, unstressed controls. In contrast, wild type and vector control plants displayed hallmark features of stress, including pectin degradation upon subjection to salinity treatment. Interestingly, despite their diverse origins, transgenic plants expressing the anti-apoptotic genes assessed in this study displayed similar physiological and biochemical characteristics during salinity treatment thus providing further evidence that cell death pathways are conserved across broad evolutionary kingdoms. Our results reveal that anti-apoptotic genes facilitate maintenance of metabolic activity at the whole plant level to create favorable conditions for cellular survival. It is these conditions that are crucial and conducive to the plants ability to tolerate/adapt to extreme environments.

La angustia esencial y la alegría del amor

Esta expresión del Santo Padre Francisco, impactante, es como un centro en el hondo sentido del anuncio del Evangelio: nuestra tristeza se cura con un infinito amor. Es una verdad que no pasa de tiempo, ni manipula ni puede desilusionar, porque la angustia, la experiencia de la finitud y la consiguiente tristeza responden a las más hondas inquietudes del ser humano y por eso el amor puede sostenerla y elevarla. Tanto si se considera la estructura de la subjetividad cuanto el compromiso comunitario y su crisis actual, o si se consideran los desafíos en el ámbito de la familia, la cultura, la educación, etc., la experiencia de la propia finitud natural a partir del trascender y la inquietud ante la exigencia de hacerse cargo de su limitación se iluminan, en la existencia humana, con la alegría y la esperanza del Evangelio que se renueva y se comunica.