Factors influencing the germination of myrtle (Lagerstroemia speciosa (L.) Pers. and L-floribunda Jack) seeds

Gibberellic acid and potassium nitrate did not promote the germination of myrtle seeds when tested at 20/30degreesC (16/8h). Germination was promoted considerably by alternating temperatures. The results of an investigation on a two-dimensional temperature gradient plate showed that myrtle seeds germinated most rapidly (within 14 days) and fully (all viable seeds) at 35/22.5degreesC (16/8 h) and similar regimes. Tests on five seed lots of Lagerstroemia speciosa and L. floribunda showed the efficacy of the alternating temperature regime of 35/20degreesC (16/8 h) in promoting germination. Thus we recommend myrtle seeds be tested for germination in this regime for 28 days.

The child in wolf���s clothing: the meanings of the ���wolf��� and questions of identity in Jack London���s White Fang

The criticism of Jack London���s work has been dominated by a reliance upon ideas of the ���real���, the ���authentic��� and the ���archetypal���. One of the figures in London���s work around which these ideas crystallize is that of the ���wolf���. This article will examine the way the wolf is mobilized both in the criticism of Jack London���s work and in an example of the work: the novel White Fang (1906). This novel, though it has often been read as clearly delimiting and demarcating the realms of nature and culture, can be read conversely as unpicking the deceptive simplicity of such categories, as troubling essentialist notions of identity (human/animal, male/female, white/Indian) and as engaging with the complexity of the journey in which a ���small animal ��� becomes human-sexual by crossing the infinite divide that separates life from humanity, the biological from the historical, ���nature��� from ���culture��� ��� (Althusser 1971: 206).

"Jag ��r bara h��r tillf��lligt" : Identitetsskapande i arbetarromaner fr��n 2010-talet av Sara Beischer och Jack Hild��n

Syftet med denna uppsats ��r att reda ut hur huvudgestalterna i Sara Beischers roman Jag ska egentligen inte jobba h��r (2012) och Jack Hild��ns roman Vi, vi vaktm��stare (2014) formar identiteter utifr��n arbetet samt hur de ser p�� sig sj��lva utanf��r arbetet. Detta g��r jag genom att utg�� ifr��n definitioner av begreppen "identitet" och "prekariat". Analysen visar att romankarakt��rerna skapar identiteter kopplade till arbetet genom att studera hur deras kollegor beter sig och d��refter h��rma detta beteende. De g��r det ��ven genom att b��ra arbetskl��der, l��ra sig arbetsuppgifterna samt genom att differentiera sig mot arbetsgivaren respektive tj��nstem��nnen p�� samma arbetsplats. Den identitet de har utanf��r arbetet ��r kopplad till kultur och ��tskild fr��n identiteten som arbetare.

Caio Fernando Abreu e Jack Kerouac : di��logos que atravessam as Am��ricas

A finalidade deste estudo �� analisar, do ponto de vista da Literatura Comparada, as rela����es existentes entre contos do escritor Caio Fernando Abreu e o romance On the Road, do norte-americano Jack Kerouac. Com o objetivo de apreender o di��logo entre os textos, a investiga����o desenvolve-se desde o exame do estilo de vida das personagens at�� as condi����es hist��ricas nas quais foram produzidas as obras. Dessa forma, focaliza-se o local que ocupa a produ����o liter��ria do escritor ga��cho, a partir das rela����es inter-liter��rias com a realidade cultural do seu tempo. Pretendeu-se verificar, atrav��s da Literatura Comparada, de que modo a obra de Caio absorve os influxos da obra de Kerouac. Assim, examina-se a apropria����o cultural estrangeira atrav��s da recep����o, em Caio, da literatura ���beat���. O estudo aborda quest��es referentes ao sujeito, �� liberdade, �� introspec����o, �� fragmenta����o, �� identidade, ao estranhamento, ao desejo, �� autonomia, relacionando-as �� constru����o da linguagem e �� representa����o da vis��o de mundo dos autores. Para tanto, foram considerados alguns momentos hist��ricos do final do s��culo XX, como a Segunda Guerra Mundial, a Guerra Fria, o Macartismo e a ditadura militar brasileira. Nesse contexto, intensifica-se, de um lado, o desejo de livre arb��trio e, de outro, a imobilidade resultante da falta de esperan��a. A partir desses dados, analisa-se a atmosfera vivida e representada nas obras de Caio e Kerouac. Dessa forma, o trabalho desenvolve a hip��tese de que Caio Fernando Abreu absorve aspectos da filosofia ���beat���, assimila-os e os transforma para adapt��-los ao seu contexto hist��rico e cultural.

Efeitos da escarifica����o qu��mica e da concentra����o de nitrog��nio sobre a germina����o e o desenvolvimento in vitro de Vanilla planifolia Jack ex Andr. (Orchidaceae: Vanilloideae)

Vanilla planifolia �� uma esp��cie com grande valor comercial, por��m sua propaga����o �� dificultada devido �� baixa germina����o de suas sementes. No presente estudo procurou-se avaliar a influ��ncia da escarifica����o destas sementes por meio da imers��o em H2SO4 concentrado durante 60, 120 e 180 segundos, bem como de diferentes concentra����es de nitrog��nio sobre a germina����o e o desenvolvimento das pl��ntulas. Sessenta segundos de escarifica����o e 25% de nitrog��nio no meio de cultura proporcionaram os melhores resultados sobre a germina����o e desenvolvimento de V. planifolia, constituindo-se em um procedimento vi��vel para a produ����o comercial dessa esp��cie.

De Bush a Jack Bauer: a seguran��a como obsess��o nos Estados Unidos ap��s o 11 de setembro

Coordena����o de Aperfei��oamento de Pessoal de N��vel Superior (CAPES)

A transitoriedade entre o mundo primitivo e o moderno nas obras The Sea-Wolf e White Fang de Jack London

The American author Jack London wrote the books The Sea-Wolf and White Fang in 1904 and 1906, respectively. The former portrays the life of a literary critic, Humphrey Van Weyden, who after the wreckage of the ship in which he was is rescued by a seal-hunting schooner, where he is obliged to work and to live with the brutal captain Wolf Larsen, and in doing so he develops a more primitive profile. The latter work portrays the life of the eponymous character, a wolf that leaves the wild world in which it was born to follow its last master in the city, thus developing features of the modern world. This paper aims to conduct an analysis of the aspects that allow the transition between the primitive and the modern world in those works

Antiageing mechanisms of a standardized supercritical CO2 preparation of Black Jack (Bidens pilosa L.) in human fibroblasts and skin fragments

Funda����o de Amparo �� Pesquisa do Estado de S��o Paulo (FAPESP)

Determina����o das temperaturas cardeais para a germina����o de sementes de Murraya paniculata L. Jack. (Rutaceae)

A Murraya paniculata, �� conhecida popularmente como murta-de-cheiro ou falsamurta, pertence �� fam��lia Rutaceae e �� uma esp��cie nativa da ��ndia que foi introduzida no Brasil. Essa esp��cie �� utilizada na arboriza����o de ruas e em jardins das cidades gra��as �� copa densa e sua resist��ncia a condi����es adversas. Pode ser utilizada tamb��m para forma����o de cerca vivas e, sua madeira branca tem alta durabilidade podendo ser utilizada em marcenarias. Na ��sia, esta esp��cie �� considerada medicinal e as folhas e ra��zes s��o utilizadas para o tratamento de problemas intestinais, de reumatismo e tosse. Do ponto de vista qu��mico, esta esp��cie acumula principalmente cumarinas e flavon��ides, al��m de derivados do ��cido cin��mico e alcal��ides. No presente trabalho propomos determinar as temperaturas cardeais para a germina����o de sementes de Murraya paniculata, al��m disso, analisamos a influ��ncia do teor de ��gua na germina����o para determinar se as sementes s��o recalcitrantes ou ortodoxas, e a influencia do potencial h��drico induzido por polietilenoglicol (PEG 6000). O aprofundamento dos estudos dessa esp��cie se faz importante por conta desta ser hospedeira alternativa do psil��deo Diaphorina citri, transmissor do ���greening��� dos citros, doen��a que diminuiu a produ����o de citros nos ��ltimos anos

Will Whole-Tree Harvest of Jack Pine (<i>Pinus banksiana</i>) deplete soil nutrients in low-productivity sand soils?

In 2009 and 2010 a study was conducted on the Hiawatha National Forest (HNF) to determine if whole-tree harvest (WTH) of jack pine would deplete the soil nutrients in the very coarse-textured Rubicon soil. WTH is restricted on Rubicon sand in order to preserve the soil fertility, but the increasing construction of biomass-fueled power plants is expected to increase the demand for forest biomass. The specific objectives of this study were to estimate biomass and nutrient content of above- and below-ground tree components in mature jack pine (Pinus banksiana) stands growing on a coarse-textured, low-productivity soil, determine pools of total C and N and exchangeable soil cations in Rubicon sand, and to compare the possible impacts of conventional stem-only harvest (CH) and WTH on soil nutrient pools and the implications for productivity of subsequent rotations. Four even-aged jack pine stands on Rubicon soil were studied. Allometric equations were used to estimate above-ground biomass and nutrients, and soil samples from each stand were taken for physical and chemical analysis. Results indicate that WTH will result in cation deficits in all stands, with exceptionally large Ca deficits occurring in two stands. Where a deficit does not occur, the cation surplus is small and, chemical weathering and atmospheric deposition is not anticipated to replace the removed cations. CH will result in a surplus of cations, and will likely not result in productivity declines during the first rotation. However even under CH, the surplus is small, and chemical weathering and atmospheric deposition will not supply enough cations for the second rotation.