3,414 research outputs found
Orchid Pollination Biology
No full textOrchids and their pollinators have developed fascinating co-adaptations that promote orchid pollination. This 6-page fact sheet details the various and often strange ways that orchids attract pollinators. The kinds of insects and animals that pollinate orchids and orchids’ reproductive anatomies and processes are also covered. Written by Haleigh Ray and Wagner Vendrame, and published by the UF Department of Environmental Horticulture, June 2015.
ENH1260/EP521: Orchid Pollination Biology (ufl.edu
Orchid Pollination Biology
No full textOrchids and their pollinators have developed fascinating co-adaptations that promote orchid pollination. This 6-page fact sheet details the various and often strange ways that orchids attract pollinators. The kinds of insects and animals that pollinate orchids and orchids’ reproductive anatomies and processes are also covered. Written by Haleigh Ray and Wagner Vendrame, and published by the UF Department of Environmental Horticulture, June 2015.
ENH1260/EP521: Orchid Pollination Biology (ufl.edu
Shari Wagner
No full textShari Wagner, Poet Laureate of Indiana and Author, shares her poetry. Students share a few favorite poems by various authors
Breeding of Orchids Using Conventional and Biotechnological Methods: Advances and Future Prospects
No full textThe domestication of plants, including ornamental plants, is an ancient tradition based on human curiosity and is the first form of plant breeding based on modern agriculture. However, recent advances in biotechnology, molecular biology, and genetic engineering, associated with better knowledge of the genome, have enabled numerous achievements to advance agriculture towards a new green revolution. In orchids, it has not been different, and recent advances in genome sequencing and the development of more sophisticated breeding techniques based on biotechnology have demonstrated their applicability for the constitution of more sophisticated cultivars. However, conventional breeding by directed crosses associated with the selection of superior genotypes has brought the greatest number of contributions to the generation of new cultivars for the flower market. The main objective of this chapter is to demonstrate this moment of transition from conventional to biotechnological breeding tools and their achievements, as well as the advances in biotechnology aimed at the production of orchid cultivars with characteristics that are not obtained by conventional breeding. In addition, it raises bigger questions and prospects about the use and applications of transgenic orchids, as well as other techniques involving targeted manipulation of DNA, such as genomic editing
Roy Wagner (1938-2018): el espejo humeante de la antropología
No full textRoy Wagner died in September 2018. This article, written out of affection and admiration, shows the originality of Wagner’s thought and highlights its importance for understanding, not only current anthropology, increasingly influenced by his work, but also the anthropological machine and its great invention, culture. The article examines moments of his life and his tastes, and recounts anecdotes told by him to provide a better understanding of the disciplinary and theoretical links that Wagner estab-lished with authors like Claude Lévi-Strauss, Victor Turner, Gregory Bateson and Carlos Castaneda. The article concludes with an extensive bibliography for those who want to explore further the work of an author who is set to become a defining figure in the anthropology of the near future.Roy Wagner murió en septiembre de 2018. Este artículo, escrito desde el afecto y la admiración, muestra la originalidad del pensamiento de Wagner y destaca la importancia del mismo para entender no solo la antropología actual, cada vez más in-fluenciada por su trabajo, sino también el propio proceder antropológico y su gran invención: la cultura. El artículo se acerca a momentos de su biografía, a sus gustos y relata anécdotas por él contadas para entender mejor los vínculos disciplinares y teóri-cos que Wagner establece con autores como Claude Lévi-Strauss, Victor Turner, Gregory Bateson o Carlos Castaneda. El artículo incluye al final una amplia bibliografía suya para quienes quieran profundizar en la obra de un autor que va a marcar sin duda la antropología de los próximos tiempos
Richard Wagner and Organ
No full textThe Czech organist Michael Bártek presents the thesis Richard Wagner and the organ. Penetration of the Work of the Genius from Bayreuth into the Music for Organ as a graduate master thesis in studies on musical faculty of the Academy of Performing Arts in Prague.
This thesis concerns itself with the relationship between Richard Wagner and the organ, a relation which is, despite no specific composition from the maestro for organ, surprisingly rich, and which seems thus far unexplored. Considering the impending bicentenary of the composer (and the 130th death anniversary), the theme deserves to be elaborated on.
The author reviews the direct relationship of Wagner and the organ, with his influences on composers for organ, as with, for example, the issue of transcription, at first more general, later more focused on Wagner
A fluorescent host-guest complex of cucurbituril in solution: a molecular Jack O'Lantern
No full textFluorescence enhancement of a probe molecule in solution by the container molecule cucurbituril (CB) is reported for the first time. The fluorescence of the probe 2-anilinonaphthalene-6-sulfonate (2,6-ANS) in aqueous Na2SO4 solution is found to increase by a maximum factor of 5.0 upon addition of cucurbituril. This fluorescence enhancement is the result of the formation of a host-guest inclusion complex, in which the guest 2,6-ANS is incorporated inside the cavity of the host, cucurbituril. Measurement of the enhancement as a function of cucurbituril concentration yielded a value of the equilibrium constant (K) of 52 +/- 10 M-1. It is proposed that the mode of inclusion involves the phenyl group of the 2,6-ANS, because of the relatively small size of the cucurbituril cavity. It is further proposed that the observed enhancement is a result of loss of rotational mobility of the phenyl ring relative to the naphthyl fluorophore of 2,6-ANS upon inclusion of the phenyl ring, Since the name cucurbituril is derived from the Latin word for "pumpkin," this fluorescent host-guest complex is referred to as a "molecular Jack O'Lantern," with the 2,6-ANS serving as the candle.PT: J; CR: BEHREND R, 1905, LIEBIGS ANN CHEM, V339, P1 BORTOLUS P, 1996, ADV PHOTOCHEMISTRY P, P1 BUSCHMANN HJ, 1992, J INCLUS PHENOM MOL, V14, P91 BUSCHMANN HJ, 1997, J INCLUS PHENOM MOL, V29, P167 BUSCHMANN HJ, 1998, THERMOCHIM ACTA, V317, P95 BUSCHMANN HJ, 1999, J PHOTOCH PHOTOBIO A, V121, P99 CINTAS P, 1994, J INCLUS PHENOM MOL, V17, P205 CRAM DJ, 1997, CONTAINER MOL THEIR DANTZ DA, 1998, SUPRAMOL CHEM, V9, P79 DELAPENA AM, 1993, J INCLUS PHENOM MOL, V15, P131 DIAMOND D, 1996, CHEM SOC REV, V25, P15 FREEMAN WA, 1981, J AM CHEM SOC, V103, P7367 HOFFMANN R, 1994, J CHEM SOC FARADAY T, V90, P1507 JEON YM, 1996, J AM CHEM SOC, V118, P9790 KOSOWER EM, 1975, J AM CHEM SOC, V97, P2167 KOSOWER EM, 1978, J AM CHEM SOC, V100, P4179 LI S, 1992, CHEM REV, V92, P1457 MOCK WL, 1983, J ORG CHEM, V48, P3618 MOCK WL, 1995, TOP CURR CHEM, V175, P1 MOCK WL, 1996, COMPREHENSIVE SUPRAM, V2, P477 WAGNER BD, 1998, J PHOTOCH PHOTOBIO A, V114, P151 WAGNER BD, 1999, J PHYS CHEM B, V103, P10114 WAGNER BD, 2000, J INCL PHENOM MACRO, V38, P467 WHANG DM, 1998, J AM CHEM SOC, V120, P4899; NR: 24; TC: 16; J9: CAN J CHEM; PG: 4; GA: 473RESource type: Electronic(1
INTERMEDIATE MODELS AND KINNA–WAGNER PRINCIPLES
No full textKinna–Wagner Principles state that every set can be mapped into
some fixed iterated power set of an ordinal, and we write KWP to denote that
there is some α for which this holds. The Kinna–Wagner Conjecture, formulated by the first author [Bull. Symb. Log., arXiv:2006.04514], states that if
V is a model of ZF + KWP and G is a V -generic filter, then whenever W is an
intermediate model of ZF, that is V ⊆ W ⊆ V [G], then W = V (x) for some x
if and only if W satisfies KWP. In this work we prove the conjecture and generalise it even further. We include a brief historical overview of Kinna–Wagner
Principles and new results about Kinna–Wagner Principles in the multiverse
of sets
Dom Pedro II e Wagner
No full textRESUMO
Com base na autobiografia de Wagner e na correspondência de Dom Pedro, o autor evoca a grande admiração do Imperador brasileiro em relação ao compositor alemão, tendo inclusive contribuído financeiramente para a construção do teatro de Bayreuth, dedicado exclusivamente à música de Wagner, e assistido à sua inauguração em companhia do Imperador da Alemanha. Descreve como Dom Pedro contribuiu indiretamente para a escolha do tema da ópera Tristão e Isolda e levou o compositor a começar a escrever essa obra, cuja estréia foi planejada para o Rio de Janeiro e dedicada ao Imperador brasileiro. Comenta os motivos que levaram Wagner a tal empreendimento e analisa os equívocos decorrentes das más condições de comunicação da época, bem como os fatores que impediram a visita de Wagner ao Brasil.
ABSTRACT
Dom Pedro II and Wagner. v. 19, n. 2, p. 215-232, jul./dez. 1991
Based on the autobiography of Wagner and the correspondence of Dom Pedro, the author evokes the great admiration that the Brazilian Emperor had for the German composer, including his having contributed financially to the construction of the Bayreuth which is dedicated exclusively to Wagner´s music, and having attended its inauguration in the company of the German Emperor. The author describes how Dom Pedro contributed indirectly to the thematic choice of the opera Tristão e Isolda, and led the composer to begin to write this work whose première was planned for Rio de Janeiro and dedicated to the Brazilian Emperor. The author comments on the motives which led Wagner to undertake such a project and analyses the errors caused by the precarious conditions of communication at the time, as well as the factors that impeded Wagner´s visit to Brazil.
RESUMÉ
D. Pedro et Wagner. v. 19, n. 2, p. 215-232, jul./dez. 1991
A partir de l’autobiographie de Wagner et la correspondence de D. Pedro II, l’auteur évoque la grande admiration que l’empereur brésilien nourissait pour le compositeur allemand. L’empereur a contribué financièrement pour la construction du théâtre de Bayreuth et à assisté à son inauguration en compagnie du musicien. L’article décrit également la manière comment D. Pedro II a contribué pour le choix du thème de l’opéra Tristã et Iseut, dont la première présentation a eu lieu à Rio de Janeiro et dédiée à l’empereur brésilien. L’article se ferme en montrant les raisons selon lesquelles Wagner n ´a pas visité le Brésil
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