Alimentação e fecundidade de planorbídeos criados em laboratórios: IV - Helisoma duryi (Wetherby, 1879). (Pulmonata, Planorbidae)

Utilizando dois tipos distintos de alimentos: "Aquariol" (alimento utilizado para alimentar peixes ornamentais) e alface, isolados e associados, na criação de Helisoma (Seminolina) duryi (Wetherby, 1879) em laboratório, foi verificado que; 1. Os caramujos alimentados com alface fresca liberaram, em 17 semanas, 826 desovas on 17.707 ovos. 2. Os especimens alimentados com "aquariol" depuseram 534 desovas on 11.361 ovos. 3. O oferecimento dos dois materiais associados resultou no aumento da fertilidade, obtendo-se, assim, 1.355 desovas ou 34.645 ovos. 4. Em termos médios, cada conjunto de quinze exemplares (com 10 a 14 mm de diâmetro) liberou, diariamente, 95,5 - 148,8 e 291,1 ovos/dia, segundo o tipo de alimento consumido: "aquariol", alface fresca, ou ambos associados. O número de desovas/dia, na mesma ordem enunciada, foi de 4,5 - 6,9 e 11,4, respectivamente. 5, Os exemplares utilizados descendiam de uma cepa supostamente recém introduzida no município de Formosa, GO (Brasil)e originária da Região Neártica (EUA). Foi comentada a possibilidade de controle biológico de diferentes espécies de Biomphalaria através de H. duryi - questão sobre a qual vêm desenvolvendo investigações biológicas e ecológicas.

Beyond time and oblivion : Sir Robert Sidney’s autograph manuscript

Dealing with ancient manuscript or old printed texts often constitutes a difficult task, especially to philologists and editors, for two main reasons: the precarious state of preservation of the documents and the uncertainty regarding their origin, authenticity and authorship. These problems are aggravated by spurious versions, due to the publication of truncated works, poorly supervised miscellanies and non-authorised editions. Sir Robert Sidney’s literary text constitutes an exception amidst such vicissitudes, once the original corpus is wholly contained in a notebook exhibiting the organisation and unity conceived by the author himself. Today, there is no evidence that any loose poems, either autograph or copied by amanuenses, were in circulation among members of the Elizabethan court society. The notebook was kept in private collections for four centuries, which probably explains why it was so well preserved. In fact, only in 1984 would P.J. Croft’s fine edition bring the youngest Sidney’s Poems into light. In this work, I approach Croft’s perceptive, accurate philological study that eventually rescued from oblivion a remarkable piece both of the Elizabethan lyric poetry and of the English Renaissance, and, at the same time, look into Robert Sidney’s peculiar, careful and original formatting of his own autograph manuscript.

Sir Walter Raleigh and Guiana : a mysterious search, a metaphorical discovery

The essay analises Sir Walter Raleigh's report (1595) of his search for Guiana, as well as his reflection on the New World and its inhabitants, which is, in many aspects, different from his contemporaries.

SIR performance evaluation of MB-OFDM UWB system with residual timing offset

Signal-to-interference ratio (SIR) performance of a multiband orthogonal frequency division multiplexing ultra-wideband system with residual timing offset is investigated. To do so, an exact mathematical derivation of the SIR of this system is derived. It becomes obvious that, unlike a cyclic prefixing based system, a zero padding based system is sensitive to residual timing offset.

Imaginários de diáspora em João de Melo e Anthony de Sá: para uma leitura da alteridade em gente feliz com lágrimas e em barnacle love

Dissertação apresentada para cumprimento dos requisitos necessários à obtenção do grau de Mestre em Estudos Portugueses (Área de Especialização em Estudos Literários)

Entre a cultura científica e a cultura visual : o caso de Sir Edwin Landseer

Tese apresentada para cumprimento dos requisitos necessários á obtenção do grau de Doutor em Línguas, Literaturas e Culturas, especialidade: Estudos Culturais

Humor and the framing of the public sphere and public opinion in Portugal (1797-1834)

In his Answer to the Question: What is Enlightenment (1784), Kant puts forward his belief that the vocation to think freely, which humankind is endowed with, is bound to make sure that “the public use of reason” will at last act “even on the fundamental principles of government and the state [will] find it agreeable to treat man – who is now more than a machine – in accord with his dignity”. The critical reference to La Mettrie (1747), by opposing the machine to human dignity, will echo, in the dawn of the 20th century, in Bergson’s attempt to explain humor. Besides being exclusive to humans, humor is also a social phenomenon. Freud (1905) assures that pleasure originated by humor is collective, it results from a “social process”: jokes need an audience, a “third party”, in order to work and have fun. Assuming humor as a social and cultural phenomenon, this paper intends to sustain that it played a role in the framing of the public sphere and of public opinion in Portugal during the transition from Absolute Monarchy to Liberalism. The search for the conditions which made possible the critical exercise of sociability is at the root of the creation of the public sphere in the sense developed by Habermas (1962), whose perspective, however, has been questioned by those who point 2 out the alleged idealism of the concept – as opposed, for example, to Bakhtin (1970), whose work stresses diversity and pluralism. This notwithstanding, the concept of public sphere is crucial to the building of public opinion, which is, in turn, indissoluble from the principle of publicity, as demonstrated by Bobbio (1985). This paper discusses the historical evolution of the concept of public opinion from Ancient Greece doxa, through Machiavelli’s “humors” (1532), the origin of the expression in Montaigne (1580) and the contributions of Hobbes (1651), Locke (1690), Swift (1729), Rousseau (1762) or Hume (1777), up to the reflection of Lippman (1922) and Bourdieu’s critique (1984). It maintains that humor, as it appears in Portuguese printed periodicals from 1797 (when Almocreve de Petas was published for the first time) to the end of the civil war (1834) – especially in those edited by José Daniel Rodrigues da Costa but also in O Piolho Viajante, by António Manuel Policarpo da Silva, or in the ones written by José Agostinho de Macedo, as well as in a political “elite minded” periodical such as Correio Braziliense –, contributed to the framing of the public sphere and of public opinion in Portugal.

The scramble for the seas : the ballad evidence of Sir Andrew Barton

The presence and importance of the sea as a factor that has helped shape the history of England since at least the Roman invasions of 55-54 BC (less successful, incidentally, than most of Caesar’s other military ventures ...) need no particular urging or demonstration. Nonetheless, a bird’s-eye view would necessarily survey the waves of invasions and settlements that, one after the other, came dashing over the centuries upon England’s shores; not to mention the requested invasion of 1688, Angles and Saxons, Scandinavians, Normans, they all crossed the whale’s path and cast anchor in England’s green and pleasant land. In the course of this retrospective voyage through the oceans of History, one would inevitably stop at the so-called ‘Discoveries’ of the 15th-16th centuries, meet their navigators, sailors and pirates extolled by Richard Hakluyt (1553?-1616), face an anonymous crowd of merchants and witness the huge expansion of trade, largely to the benefit of the ‘discovering’ countries as prescribed by the economic Gospel Adam Smith (1723-90) would later baptize as “mercantilism”.

Atividade inseticida do óleo essencial de pimenta longa (Piper hispidinervum C. DC.) sobre lagarta-do-cartucho do milho Spodoptera frugiperda (J. E. Smith, 1797) (Lepidoptera: Noctuidae)

Os objetivos desta pesquisa foram a obtenção e caracterização do óleo essencial de folhas de pimenta longa Piper hispidinervum, e avaliação de seu efeito no comportamento e/ou mortalidade da lagarta-do-cartucho do milho Spodoptera frugiperda. O óleo essencial foi obtido pela técnica "arraste a vapor d'água", utilizando-se de um aparelho de Clevenger modificado, e posteriormente submetido, à análise por CG-EM e CG. Foram realizados testes de ingestão e contato tópico em lagartas de 1º e 3º ínstar. Os resultados constataram que o óleo essencial de pimenta-longa possui atividade inseticida sobre S. frugiperda, causando redução alimentar e mortalidade, sendo o safrol (82%) seu constituinte majoritário. Verificou-se mortalidade no teste de ingestão em lagartas de 1º ínstar com CL50 = 16,2 mg/mL e para lagartas de 3º ínstar a CL50 = 9,4 mg/mL com redução alimentar CD50 = 0,72 mg/mL; e de toxicidade aguda no teste de contato tópico com DL50 = 277,91 μg/lagarta, após o intervalo de tempo de 96 horas, sendo também observados sintomas de neurotoxicidade, como o efeito knock-down.

The natural history of the rarer lepidopterous insects of Georgia : including their systematic characters, the particulars of their several metamorphoses, and the plants on which they feed. Collected from the observation of Mr. John Abbot, many years resident in that country /

vol. 1

The natural history of the rarer lepidopterous insects of Georgia : including their systematic characters, the particulars of their several metamorphoses, and the plants on which they feed. Collected from the observation of Mr. John Abbot, many years resident in that country /

vol. 2

The flora of British India /By J. D. Hooker assisted by various botanists. Published under the authority of the secretary of state for India in council.

v.2 (1879)

Flora boreali-americana, or, the botany of the northern parts of British America : compiled principally from the plants collected by Dr. Richardson & Mr. Drummond on the late northern expeditions, under command of Captain Sir John Franklin, R.N. To which are added (by permission of the Horticultural society of London,) those of Mr. Douglas, from north-west America, and of other naturalists /

v.1

Flora boreali-americana, or, the botany of the northern parts of British America : compiled principally from the plants collected by Dr. Richardson & Mr. Drummond on the late northern expeditions, under command of Captain Sir John Franklin, R.N. To which are added (by permission of the Horticultural society of London,) those of Mr. Douglas, from north-west America, and of other naturalists /

v.2