899 resultados para floral scape


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In his essay, Anti-Object, Kengo Kuma proposes that architecture cannot and should not be understood as object alone but instead always as series of networks and connections, relationships within space and through form. Some of these relationships are tangible, others are invisible. Stan Allen and James Corner have also called for an architecture that is more performative and operative – ‘less concerned with what buildings look like and more concerned with what they do’ – as means of effecting a more intimate and promiscuous relationship between infrastructure, urbanism and buildings. According to Allen this expanding filed offers a reclamation of some of the areas ceded by architecture following disciplinary specialization:

‘Territory, communication and speed are properly infrastructural problems and architecture as a discipline has developed specific technical means to deal with these variables. Mapping, projection, calculation, notation and visualization are among architecture’s traditional tools for operating at the very large scale’.

The motorway may not look like it – partly because we are no longer accustomed to think about it as such – but it is a site for and of architecture, a territory where architecture can be critical and active. If the limits of the discipline have narrowed, then one of the functions of a school of architecture must be an attempt occupy those areas of the built environment where architecture is no longer, or has yet to reach. If this is a project about reclamation of a landscape, it is also a challenge to some of the boundaries that surround architecture and often confine it, as Kuma suggests, to the appreciation of isolated objects.

M:NI 2014-15
We tend to think of the motorway as a thing or an object, something that has a singular function. Historically this is how it has been seen, with engineers designing bridges and embankments and suchlike with zeal … These objects like the M3 Urban Motorway, Belfast’s own Westway, are beautiful of course, but they have caused considerable damage to the city they were inflicted upon.

Actually, it’s the fact that we have seen the motorway as a solid object that has caused this problem. The motorway actually is a fluid and dynamic thing, and it should be seen as such: in fact it’s not an organ at all but actually tissue – something that connects rather than is. Once we start to see the motorway as tissue, it opens up new propositions about what the motorway is, is used for and does. This new dynamic and connective view unlocks the stasis of the motorway as edifice, and allows adaptation to happen: adaptation to old contexts that were ignored by the planners, and adaptation to new contexts that have arisen because of or in spite of our best efforts.

Motorways as tissue are more than just infrastructures: they are landscapes. These landscapes can be seen as surfaces on which flows take place, not only of cars, buses and lorries, but also of the globalized goods carried and the lifestyles and mobilities enabled. Here the infinite speed of urban change of thought transcends the declared speed limit [70 mph] of the motorway, in that a consignment of bananas can cause soil erosion in Equador, or the delivery of a new iphone can unlock connections and ideas the world over.

So what is this new landscape to be like? It may be a parallax-shifting, cognitive looking glass; a drone scape of energy transformation; a collective farm, or maybe part of a hospital. But what’s for sure, is that it is never fixed nor static: it pulses like a heartbeat through that most bland of landscapes, the countryside. It transmits forces like a Caribbean hurricane creating surf on an Atlantic Storm Beach: alien forces that mutate and re-form these places screaming into new, unclear and unintended futures.

And this future is clear: the future is urban. In this small rural country, motorways as tissue have made the whole of it: countryside, mountain, sea and town, into one singular, homogenous and hyper-connected, generic city.

Goodbye, place. Hello, surface!

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From March 1999 to August 2000, the authors were involved in simultaneous internal and external evaluations of the social civic and political education (SCaPE) project in Northern Ireland. This project was a major initiative established by the Citizenship Foundation, the Northern Ireland Council for the Curriculum, Examination and Assessment (CCEA), and the School of Education at the University of Ulster at Coleraine. It was a 2-year project in 25 secondary schools established to design, develop, pilot and evaluate a new programme of social, civic and political education for Northern Ireland. It also aimed to serve as a model for future Citizenship curriculum developments throughout Northern Ireland and elsewhere. This paper describes the background to the project, the design and conduct of the two evaluations, and the links between them. It outlines the main conclusions of each evaluation and describes the way SCaPE has since evolved into a mainstream curriculum development project. The final part of the paper analyses the key opportunities, tensions and challenges involved in running such evaluations at a critical time in the history of Northern Ireland – a time when innovation is both necessary and controversial. It argues that, especially in such circumstances, evaluation cannot be conducted from a neutral, objective standpoint, and that it is incumbent on evaluators to recognise the emotional, personal and political commitment they make to the projects in which they are engaged.

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No presente trabalho estudaram-se três espécies do género Lavandula, do sul de Portugal: L. luisieri e L. pedunculata (Alentejo) e L.viridis (Algarve), com vista caraterizar a composição química dos óleos essenciais das diferentes espécies, parte vegetativa (folha) e espiga floral, e dos respetivos extratos de hidrodestilação, e avaliar as propriedades antioxidante, antimicrobiana, toxicológica, analgésica e antiinflamatória de alguns dos seus óleos essenciais e extratos aquosos, mais promissores. Os resultados mostraram importantes diferenças na composição química dos óleos essenciais, quanto à diversidade e à proporção dos seus constituintes. Os óleos essenciais e hidrolatos, em estudo, apresentaram importantes propriedades antioxidantes e antimicrobianas. Os estudos toxicológicos e farmacológicos mostraram que os óleos apresentaram citotoxicidade em Artemia salina, apresentaram valores de DL50 muito superiores a 2000 mg/kg em ratinhos Swiss, e que possuem importantes propriedades analgésicas e anti-inflamatória. Estes resultados sugerem o seu potencial uso para aplicações farmacológicas como agentes nutracêuticos e/ou fitoterapêuticos; ABSTRACT:The aim of present work was to develop a set of studies of three species of the genera Lavandula, at the South of Portugal: L. luisieri e L. pedunculata (Alentejo) e L.viridis (Algarve), in order to characterize the chemical composition of the essential oils (leaves and flowers) and to evaluate the antioxidant, antimicrobial, toxicological and pharmacological properties of selected essential oils and aqueous extracts. Results show important differences in chemical composition of essential oils, both in diversity as the proportion of their constituents. Essential oils and aqueous extracts of different Lavandula spp. showed important antimicrobial and antioxidant properties. Pharmacological studies have shown that essential oils showed cytotoxicity against Artemia salina, low acute toxicity, with LD50 >> 2000 mg/kg for mice, and important analgesic and anti-inflammatory properties. These results suggest their potential use for pharmacological applications as nutraceutical and/or phytotherapeutic agents.

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Tese de dout., Química, Faculdade de Ciências e Tecnologia, Univ. do Algarve, 2012

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Tese de doutoramento, Biologia (Biologia Celular), Universidade de Lisboa, Faculdade de Ciências, 2016

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Saisi le 11 septembre 1797 à San Daniele del Friuli; cf. Laffitte, Bulletin du Bibliophile, 1989/2, 315

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Acquis le 13 germinal an VII (2 avril 1799), à l'ouverture de deux caisses adressées au conservatoire de la Bibliothèque nationale par le ministre de l'Intérieur, suite à un envoi de la commission des arts en Piémont, avec une note datée de Turin, 17 ventôse an 7 (7 mars 1799), note qui fut remise le 23 floréal an IX (12 mai 1801) au citoyen Capperonnier, administateur de la Bibliothèque nationale, par les conservateurs du département des Manuscrits; cf. B.n.F., département des Manuscrits, Archives Modernes 492, registre des acquisitions du département des Manuscrits an II-an XIV (1793-1805), f. 33 "3. Annales genuenses. Ms. in fol., un vol., écrit. du 13e s."; cf. Laffitte, Bulletin du Bibliophile, 1989/2, 316-318.

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Cf. notice du ms. par Leroquais, Bréviaires, III, 182-185 n° 591 et pl. XCIX; P. Radó, Libri liturgici manuscripti bibliothecarum Hungariae et limitropharum regionum, Budapest, 1973. Un bréviaire d'Esztergom a été imprimé en 1524 à Venise. F. 2-8v Calendrier à l'usage d'Esztergom, avec un grand nombre de saints d'origines diverses (2-7v); cf. Leroquais, op. cit., 182. À noter les saints non mentionnés dans les Acta sanctorum, ou du moins pas pour la date correspondante; ne sont pas relevés les saints hongrois considérés comme classiques par Radó, op. cit., passim : 4 févr., «Victoris m.»; 8 févr., «Juliani m.»; 13 févr., «Adalberti m.», signalé une fois dans Radó, op. cit., 96 d'après ms. Budapest, B. N. Hung., c. l. m. ae. 395; 15févr., «Faustiani m.»; 21 févr., «Septuaginta mm.», non signalé sous cette forme pour cette date dans Radó, op. cit.; 15 mars, «Hilarii conf. et pont.», non signalé sous cette forme pour cette date dans Radó, op. cit.; 17 mars, «Bernardi conf.»; 26mars, «Eustachii abb.», signalé une fois dans Radó, op. cit., 96 d'après ms. Budapest, B.N. Hung., c. l. m. ae. 395; 28 mars, «Gastuli m.», non signalé dans Radó, op. cit.; 3 juill., «Bonifacii ep.», non signalé dans Radó, op. cit.; 5 juill., «Dominici m.»; 4 août, «Gaudentii ep. et conf.», signalé une fois dans Radó, op. cit., 329 d'après ms. Budapest, B. N. Hung., c. l. m. ae. 408; 8 août, «Adventus sanguinis D. N. J. C.»; 31 août, «Pauli ep. et m.», non signalé dans Radó, op. cit.; 12 oct., «Quatuor milium mm.», non signalé dans Radó, op. cit., à rapprocher de quatuor mille octingenti septuaginta mm., cf. Radó, op. cit., 167 d'après ms. Esztergom, B. metropolitana Strigoniensis I. 20; 14 oct., «Cerbonii conf.»; 27 oct., «Vedasti m.»; 15 nov., «Martini conf.», non signalé pour cette date dans Radó, op. cit; 20 nov., «Aniani ep. [Aurelianensis] et conf.». Pour plusieurs saints du calendrier on ne trouve pas d'office dans le sanctoral, et vice versa. — «Sequitur tabula impositionis historiarum...» (8-8v). F. 11-76 Psautier férial (11-72). — Office des défunts à l'usage d'Esztergom (72v-76); cf. K. Ottosen, The responsories and versicles of the latin office of the dead, Aarhus 1993, 127 (description des ff.74v-75v = «BN8879B») et 180 (description des ff.72v-74v = «BN8879A»). F. 77-528v Temporal : «Incipit breviarium secundum chorum alme ecclesie Strigoniensis. Dominica prima in adventu Domini...» (77-282v). Sanctoral : «Incipit secunda pars breviarii scilicet de festivitatibus. De s. Silvestro...» (286-486). À noter : office de l'Immaculée Conception composé par Léonard Nogarolo (480v). Commun des saints : «Incipit commune de sanctis et primo in vigilia unius apostoli...» (486v-513v). — «Sequitur de b. Virgine sabbatis diebus per estatem. Ad vesperas...» (513v-516v). «In quotidianis horis b. Virginis...» (516v-525). — «Sequuntur preces in quadragesima...» (525-526v). — «Sequuntur suffragia sabbatis diebus per estatem...» (526v-528), dont suffrages des ss. [Stephani regis Hungariae; Emerici ducis] (527), [Ladislai regis Hungariae; Adalberti ep. Pragensis et m.] (527v). — «Absolutio excommunicati...» (528-528v). 106 hymnes mentionnées dans la table des incipit, dont une non répertoriée dans Chevalier, Repert. hymn. ni dans les A. H., pour les confesseurs : «Christe lucis splendor vere fabrice mundi semper nobis parcens miserere confessorum precibus//...» (506v); cf. P. Radó, Répertoire hymnologique des mss. liturgiques dans les bibliothèques publiques de Hongrie, Budapest 1945, n° 111, relevée une fois dans le ms. Budapest, Bibl. nat. Hung. c. l. m. ae. 132, ms. décrit par Radó, Libri liturgici..., op. cit., 395-400.

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Cf. notice du ms. par Leroquais, Bréviaires, III, 182-185 n° 591 et pl. XCIX; P. Radó, Libri liturgici manuscripti bibliothecarum Hungariae et limitropharum regionum, Budapest, 1973. Un bréviaire d'Esztergom a été imprimé en 1524 à Venise. F. 2-8v Calendrier à l'usage d'Esztergom, avec un grand nombre de saints d'origines diverses (2-7v); cf. Leroquais, op. cit., 182. À noter les saints non mentionnés dans les Acta sanctorum, ou du moins pas pour la date correspondante; ne sont pas relevés les saints hongrois considérés comme classiques par Radó, op. cit., passim : 4 févr., «Victoris m.»; 8 févr., «Juliani m.»; 13 févr., «Adalberti m.», signalé une fois dans Radó, op. cit., 96 d'après ms. Budapest, B. N. Hung., c. l. m. ae. 395; 15févr., «Faustiani m.»; 21 févr., «Septuaginta mm.», non signalé sous cette forme pour cette date dans Radó, op. cit.; 15 mars, «Hilarii conf. et pont.», non signalé sous cette forme pour cette date dans Radó, op. cit.; 17 mars, «Bernardi conf.»; 26mars, «Eustachii abb.», signalé une fois dans Radó, op. cit., 96 d'après ms. Budapest, B.N. Hung., c. l. m. ae. 395; 28 mars, «Gastuli m.», non signalé dans Radó, op. cit.; 3 juill., «Bonifacii ep.», non signalé dans Radó, op. cit.; 5 juill., «Dominici m.»; 4 août, «Gaudentii ep. et conf.», signalé une fois dans Radó, op. cit., 329 d'après ms. Budapest, B. N. Hung., c. l. m. ae. 408; 8 août, «Adventus sanguinis D. N. J. C.»; 31 août, «Pauli ep. et m.», non signalé dans Radó, op. cit.; 12 oct., «Quatuor milium mm.», non signalé dans Radó, op. cit., à rapprocher de quatuor mille octingenti septuaginta mm., cf. Radó, op. cit., 167 d'après ms. Esztergom, B. metropolitana Strigoniensis I. 20; 14 oct., «Cerbonii conf.»; 27 oct., «Vedasti m.»; 15 nov., «Martini conf.», non signalé pour cette date dans Radó, op. cit; 20 nov., «Aniani ep. [Aurelianensis] et conf.». Pour plusieurs saints du calendrier on ne trouve pas d'office dans le sanctoral, et vice versa. — «Sequitur tabula impositionis historiarum...» (8-8v). F. 11-76 Psautier férial (11-72). — Office des défunts à l'usage d'Esztergom (72v-76); cf. K. Ottosen, The responsories and versicles of the latin office of the dead, Aarhus 1993, 127 (description des ff.74v-75v = «BN8879B») et 180 (description des ff.72v-74v = «BN8879A»). F. 77-528v Temporal : «Incipit breviarium secundum chorum alme ecclesie Strigoniensis. Dominica prima in adventu Domini...» (77-282v). Sanctoral : «Incipit secunda pars breviarii scilicet de festivitatibus. De s. Silvestro...» (286-486). À noter : office de l'Immaculée Conception composé par Léonard Nogarolo (480v). Commun des saints : «Incipit commune de sanctis et primo in vigilia unius apostoli...» (486v-513v). — «Sequitur de b. Virgine sabbatis diebus per estatem. Ad vesperas...» (513v-516v). «In quotidianis horis b. Virginis...» (516v-525). — «Sequuntur preces in quadragesima...» (525-526v). — «Sequuntur suffragia sabbatis diebus per estatem...» (526v-528), dont suffrages des ss. [Stephani regis Hungariae; Emerici ducis] (527), [Ladislai regis Hungariae; Adalberti ep. Pragensis et m.] (527v). — «Absolutio excommunicati...» (528-528v). 106 hymnes mentionnées dans la table des incipit, dont une non répertoriée dans Chevalier, Repert. hymn. ni dans les A. H., pour les confesseurs : «Christe lucis splendor vere fabrice mundi semper nobis parcens miserere confessorum precibus//...» (506v); cf. P. Radó, Répertoire hymnologique des mss. liturgiques dans les bibliothèques publiques de Hongrie, Budapest 1945, n° 111, relevée une fois dans le ms. Budapest, Bibl. nat. Hung. c. l. m. ae. 132, ms. décrit par Radó, Libri liturgici..., op. cit., 395-400.

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The Impact of the Multicolor Asian Lady Beetle (Harmonia axyridis) on Niagara Wine Quality The possible influence of Harmonia axyridis (the Multicolored Asian Lady Beetle) on the sensory properties of wine was investigated. H. axyridis beetles were added to white and red grape musts at a rate of 0, 1 or 10 per L, and a trained panel evaluated the finished wines using flavor-profiling techniques. Significant modification of both wine aroma and flavor characteristics were observed in the 10 beetlelL treatments, with smaller effects noted at the 1 beetlelL rate. Vinification in the presence of H. axyridis gave higher intensity scores for peanut, bell pepper and asparagus aromas and flavors in the white wines, and peanut, asparagus/bell pepper, and earthy/herbaceous aromas and flavors in the red wines. In addition, sweet, acid and bitter tastes were affected in red wines, and a general trend of decreasing fruit and floral intensities with increasing beetle rate was observed in both white and red wines. 15 ngIL Isopropylmethoxypyrazine was added to control wines and sensory profiles similar to high beetle treatments were obtained, supporting the hypothesis that methoxypyrazines from beetles are implicated in the taint. A trained panel evaluated the treated wines after 10 months of aging using the same sensory methods described above. Sensory profiles were very similar. Fennenting in the presence of Harmonia Axyridis (HA) had little influence on the chemical composition of the ftnished wine. The notable exception IS Isopropylmethoxypyrazine content, which was assessed usmg GC-MS analysis and showed increased concentration with increasing beetle nwnber for both white and red wmes. The influence of potential remedial treatments on the sensory properties of white and red wines tainted by Harmonia axyridis were also investigated. Bentonite, activated charcoal, oak chips, de-odorized oak chips, and UV or light irradiation were applied to tainted wine, and these wines evaluated chemically and sensorially. Both white and red wines treated with oak chips had strong oak characteristics, which masked the Harmonia axyridis-associated aroma and flavour attributes. In red wine, asparagus/bell pepper characteristics were decreased by bentonite and charcoal treatments. Only activated charcoal significantly decreased methoxypyrazine levels and only in white wine.

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Although much research has been conducted on blood-meal acquisition in adult female black flies (Diptera: Simuliidae), the same cannot be said for sugarmeals. Both sexes feed on sugar which provides energy for flight and it has been commonly held that nectar is the major carbohydrate source. This thesis addresses the question of whether a non-floral carbohydrate source, specifically homopteran honeydew, is ingested by male and female black flies. Black flies reared in the laboratory have been observed to readily ingest freshly excreted and older (dry) honeydew when presented with honeydew coated tamarack branches. Field work was conducted in Algonquin Park, Ontario in the spring and summer of 1993. Three separate studies were designed to test whether homopteran honeydew is an important carbohydrate source for black flies and whether flies from different habitats utilize different sugar sources. The sugars melezitose and / or stachyose are known to occur in a variety of homopteran honeydews and therefore were used as indicators of honeydew feeding by black flies. In the first study, black flies were collected with insect nets from a stand of Larix larcina heavily infested with honeydew - producing homopterans (Adelges lariciatus). Six black fly species were captured: Simulium venustum, S. rostra tum, S. vittatum, Stegopterna mutata, S. aureum and S. quebecense. Samples of honeydew and individual black flies were tested using thin layer chromatography (T. L. C.) with fructose, glucose, sucrose, turanose, melezitose, raffinose and stachyose as standards. All sugars except turanose and melezitose were found in the adelgid honeydew samples. Since the sugar melezitose was absent from ~ honeydew samples, stachyose was used to indicate that black flies were feeding from this particular honeydew source. Of the 201 black flies tested, 194 contained sugars which occurred in 16 combinations. Stachyose combinations excluding melezitose, present in 45.9 % of flies, were used to indicate that black flies had been feeding on the adelgid honeydew. In the second study, black flies were collected in the morning and evening on 8 collection dates, using a vehicle mounted insect net. The crops and midguts of 10 male and 10 female Simulium venustum were dissected on each sample date. In total the gut contents of 320 individual flies were analysed by T. L. C. The sugars identified from these flies were present in the following proportions: fructose (100.0%), glucose (100.0%), sucrose/turanose (50.4%), melezitose (30.3%), raffinose (18.8%) and stachyose (8.7%). These sugars occurred in fourteen different combinations. It is argued that the presence of melezitose and / or stachyose indicates that black flies had fed on homopteran honeydew. Significantly more female flies (40.0%) than male flies (27.5%) had fed on honeydew. In the third study, adult black flies were sampled by sweep netting vegetation in four habitats in the morning and evening on 8 collection dates. The habitats are as follows: (1) Davies Bog, (2) Abandoned Air Field (dominated by blueberries, Vaccinium spp.), (3) Deciduous Habitat and (4) Coniferous Habitat. Sugars in the crops and midguts of female flies were tested by T. L. C. and, for S. venustum, it was found that significantly fewer flies (18.8%) from the Air Field contained honeydew than from the other three sites (Davies Bog, 34.4%; Deciduous Habitat, 36.2%; Coniferous Habitat, 25.0%). Of the 1287 black flies tested individually by T. L. C. 441 (34.3%) contained melezitose and / or stachyose sugars indicating that this proportion of the population were feeding from Homopteran honeydew. It is therefore clear that floral (nectar) sugars are not the only source of carbohydrates available to black flies.

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Family portrait taken at Charles C. Chapman's birthday celebration, Fullerton, California,July 2, 1932. The group poses outside his residence on the lawn. Top row [left to right]: Arthur Irvin, Charles Wickett, Irvin Chapman, Sam Collins, Paul Williams, Grant Chapman,, Sidney Chapman, Clay McCarn, Earl Chapman's son David McDougal, Earl Chapman's son William McDougal, Earl Chapman, Harry Chapman, William Wickett Sr. Second row [left to right]: Mr. VanMeter, Mrs. Sinclair, C. C. Sinclair, John Franklin, Way Bagley, Marjorie Collins, Emma Williams, Ruth Chapman, Vesta Chapman, Inez Bagley, Grace Chapman, Bertha Chapman, Clough Chapman, Frank and Bertha Chapman's daughter Agnes McDougal [Streech], Georgiana Chapman, Thela Clough, Mrs. Earl [Ann] Chapman, Bessie Reynolds, Fred Chapman, E. B. [Bert] Reynolds. Seated [left to right]: Mrs. VanMeter, Hattie Clark, Louie Messlar, Charlie Thamer, Louella Thamer, Dolla Harris, Stanley Chapman Sr. holding Mary Anne, Ethel Wickett, Charles C. Chapman, Clara Chapman, Colum C. Chapman, Aunt Annie Colum, Deryth Chapman, Anna Marie Chapman, Floy Chapman, Edith Chapman. Front row [left to right]: Sam E. Collins, Bill Wickett Jr., Joyce Chapman, Marilyn Chapman, Elizabeth Chapman, Mary McCarn, Nina Chapman Lescher, Jodeane Collins, Bob Gibb, Jean Chapman. In front is a floral arrangement with drawing of a Western Union telegram "To Chas. C. Chapman, July 2, 1932, N. Fullerton, Cal., 'Wishing you a happy birthday, Nina."

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Le tableau de Jean-Baptiste Belin de Fontenay intitulé Vase d’or, fleurs et buste de Louis XIV est le morceau de réception que le peintre a présenté à l’Académie royale de peinture et de sculpture en 1687. Malheureusement peu étudié, ce tableau n’en comporte pas moins trois problématiques très intéressantes. Tout d’abord, il rassemble trois genres de peinture dans une seule composition : la nature morte, le portrait et la peinture d’histoire, illustrés respectivement par les fleurs, le buste du roi et la pièce d’armure. L’association de ces trois genres dans un tableau de nature morte est peu commune dans la peinture française du 17e siècle. Il est donc nécessaire de vérifier s’il existe un lien entre les fleurs, l’image de Louis XIV et l’armure. Ensuite, le contraste entre la polychromie des fleurs et la monochromie de la sculpture et de l’ameublement est frappante ; il est possible de lier ce contraste au phénomène des débats entre le dessin et la couleur de l’Académie royale de peinture et de sculpture à la deuxième moitié du 17e siècle. D’ailleurs, les fleurs, qui n’étaient pas le sujet central dans le programme original de Le Brun, deviennent le sujet principal du tableau et occupent une place plus importante que le buste de Louis XIV. Cette modification n’a cependant pas choqué les juges de l’Académie puisque la toile a été acceptée sans contestation. Elle amène donc à s’interroger sur la hiérarchie des genres de peinture qui est la doctrine officielle de l’Académie royale de peinture et de sculpture de l’époque. Le noyau de la recherche consiste à vérifier si les fleurs n’occupent qu’une simple fonction décorative ou si elles peuvent être associées à des symboles. Notre recherche examine d’abord l’utilisation des symboles floraux dans la culture française du 17e siècle. Par la suite, elle étudie cette utilisation dans le domaine politique, à savoir que les fleurs pourraient être liées à la louange de Louis XIV. Enfin, elle analyse les domaines artistiques et esthétiques, c’est-à-dire la façon dont le tableau reflète, par l’utilisation des symboles floraux, l’évolution des théories de l’art, la hiérarchie des genres de peinture et les débats du dessin et de la couleur, en France, durant la deuxième moitié du 17e siècle.

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Recourant volontiers au voilement ou à un jeu de paravents, l’écriture pudique est marquée par la précaution – souvent troublante en soi – d’éviter de provoquer le trouble chez son lecteur. Hamaguri d’Aki Shimazaki se construit autour d’un noyau apparemment contradictoire qui transcende le tabou de l’inceste. L’étude de ce roman, mis en parallèle avec L’amant de Duras et Les belles endormies de Kawabata, permet de mettre en relief un érotisme pudique dont la principale caractéristique consiste en une remise en cause de son principe transgressif, découlant de la dissolution de la limite tracée par l’interdit. Dans un phénomène de coïncidence des opposés, l’érotisme pudique aplanit le rapport dualiste entre des éléments donnés comme inconciliables : chair et esprit, Éros et Thanatos, licite et illicite. Empreint de ce type d’érotisme, Probablement personne met en scène une jeune femme et son professeur de peinture sumi-e, de quarante ans son aîné. Une passion indéfinissable, à la lisière de la hantise, les lie de plus en plus étroitement l’un à l’autre. Leur relation se joue dans le non-dit, les regards, la gestuelle; elle se révèle graduellement à travers des traits d’encre sur le papier et la symbolique de la fleur : fascinante, cueillie, flétrie… Leur drame se joue dans la zone grise entre ce qui a eu lieu et n’a jamais eu lieu.

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The present study investigates the systematics and evolution of the Neotropical genus Deuterocohnia Mez (Bromeliaceae). It provides a comprehensive taxonomic revision as well as phylogenetic analyses based on chloroplast and nuclear DNA sequences and presents a hypothesis on the evolution of the genus. A broad morphological, anatomical, biogeographical and ecological overview of the genus is given in the first part of the study. For morphological character assessment more than 700 herbarium specimens from 39 herbaria as well as living plant material in the field and in the living collections of botanical gardens were carefully examined. The arid habitats, in which the species of Deuterocohnia grow, are reflected by the morphological and anatomical characters of the species. Important characters for species delimitation were identified, like the length of the inflorescence, the branching order, the density of flowers on partial inflorescences, the relation of the length of the primary bracts to that of the partial inflorescence, the sizes of floral bracts, sepals and petals, flower colour, the presence or absence of a pedicel, the curvature of the stamina and the petals during anthesis. After scrutinizing the nomenclatural history of the taxa belonging to Deuterocohnia – including the 1992 syonymized genus Abromeitiella – 17 species, 4 subspecies and 4 varieties are accepted in the present revision. Taxonomic changes were made in the following cases: (I) New combinations: A. abstrusa (A. Cast.) N. Schütz is re-established – as defined by Castellanos (1931) – and transfered to D. abstrusa; D. brevifolia (Griseb.) M.A. Spencer & L.B. Sm. includes accessions of the former D. lorentziana (Mez) M.A. Spencer & L.B. Sm., which are not assigned to D. abstrusa; D. bracteosa W. Till is synonymized to D. strobilifera Mez; D. meziana Kuntze ex Mez var. carmineo-viridiflora Rauh is classified as a subspecies of D. meziana (ssp. carmineo-viridiflora (Rauh) N. Schütz); D. pedicellata W. Till is classified as a subspecies of D. meziana (ssp. pedicellata (W. Till) N. Schütz); D. scapigera (Rauh & L. Hrom.) M.A. Spencer & L.B. Sm ssp. sanctae-crucis R. Vásquez & Ibisch is classified as a species (D. sanctae-crucis (R. Vásquez & Ibisch) N. Schütz); (II) New taxa: a new subspecies of D. meziana Kuntze ex Mez is established; a new variety of D. scapigera is established; (the new taxa will be validly published elsewhere); (III) New type: an epitype for D. longipetala was chosen. All other species were kept according to Spencer and Smith (1992) or – in the case of more recently described species – according to the protologue. Beside the nomenclatural notes and the detailed descriptions, information on distribution, habitat and ecology, etymology and taxonomic delimitation is provided for the genus and for each of its species. An key was constructed for the identification of currently accepted species, subspecies and varieties. The key is based on easily detectable morphological characters. The former synonymization of the genus Abromeitiella into Deuterocohnia (Spencer and Smith 1992) is re-evalutated in the present study. Morphological as well as molecular investigations revealed Deuterocohnia incl. Abromeitiella as being monophyletic, with some indications that a monophyletic Abromeitiella lineage arose from within Deuterocohnia. Thus the union of both genera is confirmed. The second part of the present thesis describes and discusses the molecular phylogenies and networks. Molecular analyses of three chloroplast intergenic spacers (rpl32-trnL, rps16-trnK, trnS-ycf3) were conducted with a sample set of 119 taxa. This set included 103 Deuterocohnia accessions from all 17 described species of the genus and 16 outgroup taxa from the remainder of Pitcairnioideae s.str. (Dyckia (8 sp.), Encholirium (2 sp.), Fosterella (4 sp.) and Pitcairnia (2 sp.)). With its high sampling density, the present investigation by far represents the most comprehensive molecular study of Deuterocohnia up till now. All data sets were analyzed separately as well as in combination, and various optimality criteria for phylogenetic tree construction were applied (Maximum Parsimony, Maximum Likelihood, Bayesian inferences and the distance method Neighbour Joining). Congruent topologies were generally obtained with different algorithms and optimality criteria, but individual clades received different degrees of statistical support in some analyses. The rps16-trnK locus was the most informative among the three spacer regions examined. The results of the chloroplast DNA analyses revealed a highly supported paraphyly of Deuterocohnia. Thus, the cpDNA trees divide the genus into two subclades (A and B), of which Deuterocohnia subclade B is sister to the included Dyckia and Encholirium accessions, and both together are sister to Deuterocohnia subclade A. To further examine the relationship between Deuterocohnia and Dyckia/Encholirium at the generic level, two nuclear low copy markers (PRK exon2-5 and PHYC exon1) were analysed with a reduced taxon set. This set included 22 Deuterocohnia accessions (including members of both cpDNA subclades), 2 Dyckia, 2 Encholirium and 2 Fosterella species. Phylogenetic trees were constructed as described above, and for comparison the same reduced taxon set was also analysed at the three cpDNA data loci. In contrast to the cpDNA results, the nuclear DNA data strongly supported the monophyly of Deuterocohnia, which takes a sister position to a clade of Dyckia and Encholirium samples. As morphology as well as nuclear DNA data generated in the present study and in a former AFLP analysis (Horres 2003) all corroborate the monophyly of Deuterocohnia, the apparent paraphyly displayed in cpDNA analyses is interpreted to be the consequence of a chloroplast capture event. This involves the introgression of the chloroplast genome from the common ancestor of the Dyckia/ Encholirium lineage into the ancestor of Deuterocohnia subclade B species. The chloroplast haplotypes are not species-specific in Deuterocohnia. Thus, one haplotype was sometimes shared by several species, where the same species may harbour different haplotypes. The arrangement of haplotypes followed geographical patterns rather than taxonomic boundaries, which may indicate some residual gene flow among populations from different Deuteroccohnia species. Phenotypic species coherence on the background of ongoing gene flow may then be maintained by sets of co-adapted alleles, as was suggested by the porous genome concept (Wu 2001, Palma-Silva et al. 2011). The results of the present study suggest the following scenario for the evolution of Deuterocohnia and its species. Deuterocohnia longipetala may be envisaged as a representative of the ancestral state within the genus. This is supported by (1) the wide distribution of this species; (2) the overlap in distribution area with species of Dyckia; (3) the laxly flowered inflorescences, which are also typical for Dyckia; (4) the yellow petals with a greenish tip, present in most other Deuterocohnia species. The following six extant lineages within Deuterocohnia might have independently been derived from this ancestral state with a few changes each: (I) D. meziana, D. brevispicata and D. seramisiana (Bolivia, lowland to montane areas, mostly reddish-greenish coloured, very laxly to very densely flowered); (II) D. strobilifera (Bolivia, high Andean mountains, yellow flowers, densely flowered); (III) D. glandulosa (Bolivia, montane areas, yellow-greenish flowers, densely flowered); (IV) D. haumanii, D. schreiteri, D. digitata, and D. chrysantha (Argentina, Chile, E Andean mountains and Atacama desert, yellow-greenish flowers, densely flowered); (V) D. recurvipetala (Argentina, foothills of the Andes, recurved yellow flowers, laxly flowered); (VI) D. gableana, D. scapigera, D. sanctae-crucis, D. abstrusa, D. brevifolia, D. lotteae (former Abromeitiella species, Bolivia, Argentina, higher Andean mountains, greenish-yellow flowers, inflorescence usually simple). Originating from the lower montane Andean regions, at least four lineages of the genus (I, II, IV, VI) adapted in part to higher altitudes by developing densely flowered partial inflorescences, shorter flowers and – in at least three lineages (II, IV, VI) – smaller rosettes, whereas species spreading into the lowlands (I, V) developed larger plants, laxly flowered, amply branched inflorescences and in part larger flowers (I).