996 resultados para Maury, Matthew Fontaine, 1806-1873.


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I. Robespierre. Carlyle. Byron. Macaulay. Emerson. --II. Vauvenargues. Turgot. Condorcet. Joseph de Maistre. --III. On popular culture. The death of Mr. Mill. Mr. Mill's Autobiography. The life of George Eliot. On Pattison's Memoirs. Harriet Martineau. W.R. Greg; a sketch. France in the eighteenth century. The expansion of England. Auguste Comte.

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Traduit et precede d'une introduction par Dupont-White.

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Mode of access: Internet.

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Rhipicephalus sanguineus are bloodsucking ectoparasites, whose main host is the domestic dog, thus being present in urban areas and closely located to people. Eventually, this tick species parasitize humans and can become a potential vector of infectious diseases. Methods to control this type of pest have been the focus of many research groups worldwide. The use of natural products is increasingly considered nowadays, due to the low toxicity levels to the host and low waste generation to the environment. This study tested the effect of ricinoleic acid esters from castor oil (as an potential acaricide) on the reproductive system of R sanguineus females, more specifically on the vitellogenesis process. For this, two groups were established: the control group (CG) and the treatment group (TG) with five rabbits in each (New Zealand White), used as hosts. NaCl and ester were added to rabbits' food and offered to the hosts. After full engorgement, the females were collected and had their ovaries extracted. The ticks ovaries were submitted to histochemical techniques so the effects of esters could be observed over polysaccharides, proteins and lipids yolk. Changes in the deposition of yolk components were observed. This caused modifications on elements of polysaccharide origin and on glycoprotein compounds, interfering in the final yolk synthesis and compromising the development of the future embryo. © 2012.

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Studies on the molecular bases of the neurotoxic action of acaricides are found in the literature; but there are no studies of this action on the nervous system of ticks at the cellular level. The present study describes the morphological and cytochemical changes in the synganglion of Rhipicephalus sanguineus semi-engorged females exposed to different concentrations of permethrin, a pyrethroid with recognized neurotoxic action. Permethrin induced the degeneration of the synganglion through a process of apoptosis involving autophagy, characterized by the condensation and margination of the chromatin, formation of blebs in the nuclear envelope and fragmentation of the nucleus, loss of shape of neural cells and integrity of cellular membrane, cytoplasmic shrinkage, and lower levels of acid phosphatase in the nervous tissue as the concentration of permethrin increased. This study provided further evidence of the neurotoxic action of permethrin, which impairs the metabolism of R. sanguineus nervous systems, and consequently the physiology of other systems, dependent on the neural control. These results provide cytochemical and histological confirmation of the neurotoxic action of permethrin, previously inferred from molecular and tick behavioral evidence. © 2013 Elsevier B.V.

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Mode of access: Internet.

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Trial in the Circuit Court for the First Judicial Circuit, New York City, June-July, 1827, for conspiracy to defraud the Morris Canal & Banking Company, the Fulton Bank and others.

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"Auteurs cités dans l'ouvrage": v.2, p.[479]-484.

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O gênero Rhopalessa é revisto e divido em dois grupos: grupo de clavicornis, com R. clavicornis (Bates, 1873), R. demissa (Melzer, 1934), R. hirticollis (Zajciw, 1958), R. moraguesi (Tavakilian & Peñaherrera-Leiva, 2003), R. pilosicollis (Zajciw, 1966) e R. subandina sp. nov.; e grupo de rubroscutellaris com R. durantoni (Peñaherrera-Leiva & Tavakilian, 2004) e R. rubroscutellaris (Tippmann, 1960). Duas espécies são sinonimizadas com R. clavicornis: Ommata (Rhopalessa) nigrotarsis Fisher, 1937 e Ommata (Rhopalessa) nigricollis Zajciw, 1969.

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Oxyommata Zajciw, 1970 e O. collaris (Audinet-Serville, 1833) são redescritos e comentados. Um novo gênero proveniente da divisão de Xenocrasis Bates, 1873 é descrito e três espécies alocadas nele: X. fulvicollis(Lacordaire, 1868); X. pubipennis (Fisher, 1952); e X. vestitipennis Zajciw, 1963. É apresentada chave para as espécies do novo gênero.

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Quando perguntavam a Matthew Lipman se o propósito da Filosofia para Crianças seria tornar os alunos mais sábios ou mais filosóficos, o autor rejeitava em absoluto a ideia. O objetivo do programa de ensino da Filosofia concebido por Lipman e projetado em conjunto com Ann Margaret Sharp era mais ambicioso: proporcionar às crianças o desenvolvimento de competências cognitivas, sociais e afetivas que as habilitem a lidar filosoficamente com qualquer problema que as interpele enquanto seres humanos. Este artigo divide-se em três partes: a tradução de um excerto de "Philosophy goes to School", uma breve apresentação biográfica do autor e uma exploração das ideias de Matthew Lipman sobre o ensino da Filosofia.

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Congresso Internacional de História da Medicina (ISHM); 39º - p.217-218