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Jonathan H. Shannon 《American anthropologist》2003,105(2):266-277
This article examines how the performance of a variety of Islamic music in transnational cultural circuits helps to promote the idea of a style of sacred music within the category of world music. Taking as an example the performance of the mawlawiyya, or "Whirling Dervish," music and dance by a Syrian–based ensemble, I show how the idea of an authentic local Syrian sacred music tradition requires its performance globally. I use the concept of the "world stage" to examine how musical performance practices that are represented as authentic local traditions obtain both their authenticity and their local specificity through their staging in global contexts. I further explore how such musical styles as sacred and Sufi emerge as naturalized categories in world music discourse, and how processes of differentiation and commodification reconfigure both the "local" and "global." [Keywords: world music, globalization, style, Syria, Islam] 相似文献
23.
The small (116 amino acids) inner membrane protein MerT encoded by the transposon Tn501 has been overexpressed under the control of the bacteriophage T7 expression system. Random mutants of MerT were made and screened for loss of mercuric ion hypersensitivity. Several mutantmerT genes were selected and sequenced: Cys24Arg and Cys25Tyr mutations abolish mercury resistance, as do charge-substitution mutations in the first predicted transmembrane helix (Glyl4Arg, Glyl5Arg, Gly27Arg, Ala18Asp), and the termination mutations Trp66Ter and Cys82Ter. 相似文献
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Jonathan R. Seckl George Fink 《The Journal of steroid biochemistry and molecular biology》1991,40(4-6):685-688
The hippocampus receives major noradrenergic and serotoninergic (5-HT) innervations which interact with corticosteroid-sensitive cells. However, the subregional localization of these actions and the corticosteroid receptor types involved have not been defined and current ligand binding techniques for estimating corticosteroid receptors are hampered by several methodological limitations. We have developed in situ hybridization histochemical techniques to allow specific and sensitive estimation of glucocorticoid (GR) and mineralocorticoid receptor (MR) mRNA expression in rat hippocampus. Investigation of the effects of 5,7-dihydroxytryptamine lesions of 5-HT neurons showed significantly reduced GR and MR mRNA expression in some hippocampal subregions. Both abnormal 5-HT neurotransmission and excessive corticosteroid secretion are associated with major affective disorders, particularly depression. The crucial interaction between these two systems may occur, at least in part, at the level of regulation of hippocampal corticosteroid receptor expression. 相似文献
26.
Jonathan G. M. Cutting 《Journal of Plant Growth Regulation》1991,10(1-4):85-89
Cytokinins from normal and witchesbroom malformed stems of proteas were determined by radioimmunoassay following sample resolution by high-performance liquid chromatography (HPLC). Material from the early stages of shoot malformation had increased cytokinin concentrations which, over time, declined to the concentrations found in normal-growing stems. The cytokinin complement of the malformed structures was different from that of normal stems. The high concentrations of isopentenyladenosine detected appear to be related to the loss of the correlative inhibition of lateral buds and the development of the witchesbroom structures and may result from localized changes in cytokinin biosynthesis and/or metabolism. 相似文献
27.
ON MISSING ENTRIES IN CLADISTIC ANALYSIS 总被引:5,自引:0,他引:5
Norman I. Platnick Charles E. Griswold Jonathan A. Coddington 《Cladistics : the international journal of the Willi Hennig Society》1991,7(4):337-343
Abstract The exact algorithms of two commonly used parsimony programs, Hennig86 by J. S. Farris and PAUP by D. Swofford, sometimes produce different solutions, and sometimes produce resolutions that are not supported by the data being analysed. The discrepancies apparently involve the treatment of missing entries, which can currently represent unknown data, inapplicable character and/or polymorphic taxa. Each of those potential sources of ambiguity is logically (if not computationally) different; with regard to binary characters, unknown data could be either 0 or 1, inapplicable characters are neither 0 nor 1 and polymorphisms are both 0 and 1. Resolutions that cannot be supported by any possible combination of known state attributions should either be flagged as such or suppressed entirely. 相似文献
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Decapitation or red light irradiation (R) inhibited growth and Golgi-localized glucan synthetase (GS I) activity in the mesocotyl of intact maize (Zea mays L.) seedlings. Applied auxin (indole-3-acetic acid) prevented the effects of R and of decapitation on both growth and GS I. Auxin applied several hours after irradiation prevented any further decline in GS I but did not restore it. Mesocotyl segments incubated in solution elongated in response to auxin but lost GS I with time regardless of the presence of exogenous auxin. An attached seed was necessary for maintenance of GS I in the dark-grown mesocotyl.Abbreviations GS
glucan synthetase
- IAA
indole-3-acetic acid
- R
red light 相似文献
30.
An extensive search for recombination between mitochondrial markers was carried out in Paramecium tetraurelia. Thirty-two combinations, altogether involving 24 different markers, were studied. The markers belonged to the three main categories of mitochondrial mutations presently available in this organism, (a) Spontaneous or UV-induced antibiotic resistance mutations, most probably affecting mitochondrial ribosomes, (b) nitrosoguanidine-induced antibiotic resistance markers displaying thermosensitivity or slow growth, enabling easy selection of possible wild-type recombinants, and (c) mitochondrial partial suppressors of a nuclear gene, probably corresponding to molecular alterations distinct from the preceding two categories. In addition, different genetic configurations were analyzed (i.e., mutant X mutant, double-mutant X wild-type, etc.).--None of the combinations yielded any evidence for the occurrence of recombined genomes despite the fact that: (1) all of them were studied on a large scale involving the screening of at least several thousand mitochondrial genomes (often several millions), (2) in many of them the detection level was sufficiently high to enable the isolation of spontaneous mutants in control cells, and (3) in several of them, reconstitution experiments carried out in parallel show that the conditions were fully adequate to detect recombinant genotypes. The results are in marked contrast with those obtained on the few other organisms in which mitochondrial recombination has been studied, particularly Saccharomyces cerevisiae, in which mitochondrial recombination is intense.--The most likely basis for the various manifestations of mitochondrial genetic autonomy in Paramecium, described in this as well as in previous publications, is that the chondriome of this organism is made up of thousands of structurally discrete, noninteracting units. 相似文献