612 resultados para fighting
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In the military dimension, the Four-Day War in Nagorno-Karabakh (2–5 April 2016) changed little in the conflict zone. It has, however, had a significant impact on the situation in Armenia. The country was shocked out of the political malaise that had been the dominant mood in the last few years, and the Karabakh question, which used to animate political life in the late 1980s and early 1990s, once again became a driving force behind developments. In the internal dimension, the renewed fighting galvanised the political scene, triggered a rise in nationalist sentiments, mobilised the public and consolidated it around the Karabakh question, overshadowing the frustrations caused by the country’s difficult economic situation. In the external dimension, the war, which was viewed as Moscow-endorsed Azerbaijani aggression, undermined people’s trust in Russia and the Armenian-Russian alliance. It also made it clear for Armenians how uncertain the Russian security guarantees were and exacerbated their feelings of vulnerability and isolation on the international stage.
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Group living animals must be able to express different behavior profiles depending on their social status. Therefore, the same genotype may translate into different behavioral phenotypes through socially driven differential gene expression. However, how social information is translated into a neurogenomic response and what are the specific cues in a social interaction that signal a change in social status are questions that have remained unanswered. Here, we show for the first time, to our knowledge, that the switch between status-specific neurogenomic states relies on the assessment of fight outcome rather than just on self- or opponent-only assessment of fighting ability. For this purpose, we manipulated the perception of fight outcome in male zebrafish and measured its impact on the brain transcriptome using a zebrafish whole genome gene chip. Males fought either a real opponent, and a winner and a loser were identified, or their own image on a mirror, in which case, despite expressing aggressive behavior, males did not experience either a victory or a defeat. Massive changes in the brain transcriptome were observed in real opponent fighters, with losers displaying both a higher number of differentially expressed genes and of coexpressed gene modules than winners. In contrast, mirror fighters expressed a neurogenomic state similar to that of noninteracting fish. The genes that responded to fight outcome included immediate early genes and genes involved in neuroplasticity and epigenetic modifications. These results indicate that, even in cognitively simple organisms such as zebrafish, neurogenomic responses underlying changes in social status rely on mutual assessment of fighting ability.
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Dissertação apresentada para a obtenção do grau de Mestre em Desporto com especialização em Condição Física e Saúde
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A floresta constitui uma das riquezas naturais com maior valor em todo o planeta, assumindo uma vital importância em termos ambientais e económicos, nomeadamente para Portugal. Neste projeto desenvolve-se um potencial meio de combate a incêndios florestais, com base num conceito inovador e complementar aos atuais meios aplicados no combate a este tipo de flagelo. Este projeto de investigação visa o desenvolvimento de um projétil de detonação mecânica, logo inerte, para aplicação no combate a incêndios florestais, e enquadra-se no âmbito de uma parceria alargada de colaboração em I&D entre a Academia Militar e o Instituto Superior Técnico. O conceito deste produto, ao qual foi atribuído o acrónimo: FIREND, foi, inicialmente, desenvolvido no âmbito de um projeto de I&D da Academia Militar. Neste projeto realiza-se o desenvolvimento final do conceito do produto, incluindo a verificação de aspetos chave no projeto mecânico, seleção e aquisição de materiais e fabrico de protótipos para ensaios balísticos em condições reais. Os resultados de funcionalidade e eficiência são apresentados nas fases estabilidade em voo, impacto com o solo, detonação, projeção e dispersão da carga para o exterior e análise de recuperação dos componentes do FIREND, após utilização. Tendo em conta os resultados obtidos relativos ao funcionamento do FIREND durante o disparo do Obus, voo, impacto no solo e detonação e ainda o estado geral dos componentes após os ensaios, pode-se concluir que se trata de um projeto viável.
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Regrouping female rabbits (Oryctolagus cuniculus) in group housing systems is a common management practice in Swiss rabbit breeding which may, however, induce agonistic interactions resulting in social stress and severe lesions. On farms using artificial insemination, does are usually kept singly for 12 days after parturition to avoid pseudopregnancy and fighting for nests. The integration of new group members usually occurs after this isolation phase. This study was conducted with 128 gravid does of the Hycole hybrid, housed in pens covering a floor area of 5.7 m2 that was bedded with straw and furnished with elevated areas, hiding places and eight compartments with nest boxes. In the experiment, the fur of 16 groups of 8 does each was sprayed with either alcohol or vinegar to mask the pre-existing group odours, or with water (control groups) shortly before regrouping. Lesion scores, stress parameters (body temperature and blood glucose level) and behaviour were assessed before and after the isolation phase. Effects of treatment and time on all collected parameters were analysed using mixed models. On the second day after regrouping 43% of the does showed new lesions. In the first five days after regrouping, new lesions occurred in 60% of the does; 32% had severe lesions. After regrouping, more agonistic interactions were observed and body temperature and blood glucose levels were higher than before regrouping (P<0.001 each). Body temperature increased less in groups treated with vinegar compared to the other two treatments on the first day after regrouping (P=0.017). In all other parameters no influence of the treatment with alcohol or vinegar was found. These findings suggest that masking the group odours with alcohol or vinegar had little effect on lesions, stress and agonistic interactions. Therefore, alternative management procedures need to be developed to reduce lesions and stress caused by aggressive behaviour.
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At home in his village, Arne and his family prayed for the return of the freighter Stjerne, which was fighting against storms at sea in order to get back to the village. It was Christmas season and the Stjerne was the Christmas ship this year. It's mission was to bring gifts to the village. But more important to Arne, his brother Gustave was first mate on that ship and he and his family prayed for his safe return. This is the story of how Arne does his part to help bring the Christmas ship back safely to port.
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National Highway Traffic Safety Administration, Washington, D.C.
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"Supersedes NAVMC 1135-A03, Bayonet fighting, dated 22 March 1957."
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A collection of miscellaneous pamphlets on World War I.
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A collection of miscellaneous pamphlets on World War I.
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A collection of miscellaneous pamphlets on religion.
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I. Introductory: The River, its place and power.--II. Where France and England met.--III. The old French war in the West.--IV. One of the vanguard of the pioneers.--V. The "Monongahela country" and its metropolis.--VI. The Ohio in the revolution.--VII. The fighting Virginians.--VIII. Fort Washington and the "Bloody way."--IX. The reign of the rowdy and outlaw.--X. From keelboat to schooner.--XI. From Pittsburg to Louisville in 1806.--XII. Blennerhassett island.--XIII. Where Yankee and Virginian met.--XIV. When the steamboat was king.--XV. The workshop of the world.
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[Ensian caption: "The fighting face" of the cinder track. Fox and Ufer leading the runners in the back stretch.]
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We examined the role of conspicuous coloration in male-male contests for two species of Australian dragon lizards, Ctenophortis decresii and C. vadnappa, in which conspicuous coloration has a demonstrated predation cost. We conducted contests in which the overall conspicuousness of male coloration was manipulated using paints that matched the spectral reflectance of the lizards, as well as natural (control) contests. There was little evidence for an influence of colour on contest outcome or aggression levels for either species when all experiments were considered. However, we found a significant effect of trial order and experience on contest outcome and aggression levels (the same pair of males was used for both types of contest), despite a 2-3 week interval between contests. When we examined only the first trial between unfamiliar males, we found that male C. vadnappa that had been painted to appear more conspicuous consistently won. Comparison with the natural trials suggests that the aspect of colour manipulation that was responsible for this result was the 'hue' of the throat: males with yellower throats consistently beat males with bluer throats in both natural and painted trials. The difference in coloration of flank markings also predicted the difference in aggression scores between contestants in the natural trials. These results suggest that although colour is important in opponent assessment and in determining contest outcome in C vadnappa, previous agonistic experience can override the effects of colour and have a long-lasting influence on aggressive behaviour.