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Als Sohn des Pianisten und Musikwissenschaftlers Ludvík Kundera, einem Schüler von Leoš Janáček, hat Milan Kundera sowohl in seinen Essays als auch in seinen literarischen Fiktionen zahlreiche Seiten der Musik gewidmet, insbesondere der tschechischen. In seinem ersten Roman "Der Scherz" ("Žert", 1968) ist die tschechische Volksmusik der Leitfaden des gesamten Werkes: Sie wird zum Gegenstand poetischer und sogar technischer Beschreibungen (mit Notenauszügen ausgestattet) durch die Protagonisten, sowie zum gemeinschaftsstiftenden Zeichen, das Emotionen kollektiv auszulösen vermag. Kundera zeigt aber auch die Gefahren der über die Musik erreichten Emotionalisierung, wenn sie im Kontext des kommunistischen Regimes als Mittel zur Manipulation des Volkes dient: anstatt Menschen zu einen, entwickelt die Musik ihre destruktive Kraft, die bis zur Ausgrenzung führen kann. Wie es der Schriftsteller in "Testaments trahis" ausdrückt, kann die Lyrik fester Bestandteil der totalitären Welt sein und somit Traumata verursachen.
Le sujet de cet article est une théorie de l'acte créateur. Un commentaire sur la "Grande Improvisation" ['Wielka Improwizacja'], monologue dramatique tiré des "Aïeux" ['Dziady'] d'Adam Mickiewicz (1798-1855), fournira un exemple de l'expression de la force créatrice. Ces réflexions serviront à introduire la thèse suivante sur la nature herméneutique de l'acte de création poétique: au moment de la création poétique, la conscience se développe grâce au pouvoir formateur de l'imagination qui permet aux dimensions sémantique et musicale de l'oeuvre de se manifester conjointement. Pour mieux comprendre cette thèse, nous la situerons dans le contexte de la philosophie allemande et polonaise de la langue et de la poésie (Herder, Novalis, Wilhelm von Humboldt, Friedrich Schlegel, Schelling, Libelt). Nous rappellerons quelques concepts clés: la 'Besonnenheit' (circonspection) de Herder, la 'Selbstdurchdringung des Geistes' (auto-pénétration de l'esprit) de Novalis et l''Energeia' de Humboldt. Tous indiquent que l'âme peut accéder à la conscience grâce à ses propres actes langagiers créateurs et à la construction de formes musicales.
The natural musicality of Italians : 18th-century medical and literary discourse on melancholy
(2019)
L'attribuzione del carattere malinconico agli italiani rilevata all'interno della letteratura di viaggio del XVIII e XIX secolo sembra contrastare, ad una prima lettura, con una tradizione letteraria che invece lo associava ai popoli dell'Europa del nord. Una lettura più approfondita di queste descrizioni nel contesto della medicina psichiatrica e della trattatista musicale del tempo ne rivela l'utilizzo come rinforzo dello stereotipo molto diffuso riguardante l'innata e naturale musicalità degli italiani. Descriverli malinconici servì a giustificare e la loro passione per la musica. Essi ne avevano bisogno per alleviare la malinconia e per questo motivo divennero più musicali delle altre nazioni.
Contrairement à sa contrepartie visuelle, qui est ancienne, l’ekphrasis acoustique - la description littéraire d'un son - ne date que de la fin du XVIIIe siècle, moment où l'ekphrasis spécifiquement musicale commence à apparaître comme base pour l'analyse et le jugement esthétique. Son émergence est liée au développement du concept de média. De nombreux cas d'ekphrasis acoustiques dépendent de la possibilité de rendre perceptible le medium par lequel le son, et en particulier le son musical, parvient à l'auditeur. Ces mêmes descriptions ekphrastiques tendent fortement à répéter le processus qu'elles décrivent. Ce qui signifie qu'elles rendent également perceptible le medium par lequel la littérature parvient au lecteur. Ce médium littéraire, cependant, n'est pas l'écriture, du moins pas en premier lieu : il s'agit plutôt d'une condition de résonance que l'écriture partage avec le son qu'elle décrit - une condition à la fois matérielle et émotive. Le mouvement de perception conduisant des phénomènes auditifs et littéraires vers leurs médias permet d'attribuer une signification ontologique à l'esthétique du son et de sa représentation. Deux poèmes issus de mondes culturels différents, de même que leurs mises en musique, serviront à illustrer les dimensions formelles et affectives de ces relations : "Meeresstille", poème de Goethe (1787) et sa mise en musique par Schubert (1815), puis "Far--Far--Away", poème de Tennyson (1893) et sa mise en musique par Ned Rorem (1963).
Background: Rates of permanent pacemaker implantation (PPI) have been low using the self‐expanding ACURATE neo device, but data regarding risk factors of PPI for this specific device are scarce.
Methods: The study cohort consisted of patients (n = 1000) with severe aortic stenosis undergoing transfemoral transcatheter aortic valve implantation (TAVI) using the ACURATE neo prosthesis in our center between May 2012 and December 2019. For the present analysis, we excluded patients with previous permanent pacemaker (n = 110), high‐grade AV block prior to TAVI (n = 3), and patients requiring conversion to surgical valve replacement (n = 4) or the implantation of a second prosthesis as valve‐in‐valve (n = 15). Preexisting conduction abnormalities were determined, and the implantation depth of the prosthesis was measured on final angiography. Differences across quartiles based on the original consecutive cohort were analyzed with respect to implantation depth and PPI rate. Predictors of PPI were identified using logistic regression.
Results: The PPI rate was 10%. Preexisting AV block I°, right bundle branch block (RBBB), and the implantation depth were independent predictors of PPI. Across quartiles, the implantation depth differed significantly with lowest values in the last quartile, whereas differences of PPI rates across quartiles were not statistically significant, but showed a notable decrease in the last quartile.
Conclusion: Preexisting RBBB, AV block I°, and low implantation depth were independent predictors of PPI following TAVI using the ACURATE neo device. Instead of deliberately aiming at a high position, avoidance of a low implantation depth may represent a reasonable compromise to reduce the rate of PPI without increasing the risk of malpositioning.
In the Indo-West Pacific, intertidal slugs of the genus Platevindex Baker, 1938 are common in mangrove forests, where they typically live on the roots and trunks of mangrove trees. These slugs are easily distinguished from most onchidiids by their hard notum and narrow foot, but despite their large size and abundance, species diversity and geographic distributions have remained a mystery. With the aid of new collections from across the entire Indo-West Pacific, the taxonomy of Platevindex is revised using an integrative approach (natural history field observations, re-examination of type specimens, mitochondrial and nuclear DNA sequences, and comparative anatomy). In this monograph, nine species of Platevindex are recognized, including one new to science: P. amboinae (Plate, 1893), P. applanatus (Simroth, 1920) comb. nov., P. aptei Goulding & Dayrat sp. nov., P. burnupi (Collinge, 1902) comb. nov., P. coriaceus (Semper, 1880), P. latus (Plate, 1893), P. luteus (Semper, 1880), P. martensi (Plate, 1893) and P. tigrinus (Stoliczka, 1869) comb. nov. Five species names are recognized as junior synonyms, four of which are new, and two Platevindex names are regarded as nomina dubia. One new subspecies is also recognized: P. coriaceus darwinensis Goulding & Dayrat subsp. nov. Most species were previously known only from the type material and many new geographic records are provided across the Indo-West Pacific, from South Africa to the West Pacific (Japan, New Ireland and New Caledonia).
The classification of the superfamily Psylloidea is revised to incorporate findings from recent molecular studies, and to integrate a reassessment of monophyla primarily based on molecular data with morphological evidence and previous classifications. We incorporate a reinterpretation of relevant morphology in the light of the molecular findings and discuss conflicts with respect to different data sources and sampling strategies. Seven families are recognised of which four (Calophyidae, Carsidaridae, Mastigimatidae and Triozidae) are strongly supported, and three (Aphalaridae, Liviidae and Psyllidae) weakly or moderately supported. Although the revised classification is mostly similar to those recognised by recent authors, there are some notable differences, such as Diaphorina and Katacephala which are transferred from Liviidae to Psyllidae. Five new subfamilies and one new genus are described, and one secondary homonym is replaced by a new species name. A new or revised status is proposed for one family, four subfamilies, four tribes, seven subtribes and five genera. One tribe and eight genera / subgenera are synonymised, and 32 new and six revised species combinations are proposed. All recognised genera of Psylloidea (extant and fossil) are assigned to family level taxa, except for one which is considered a nomen dubium.
A recent global meta‐analysis reported a decrease in terrestrial but increase in freshwater insect abundance and biomass (van Klink et al., Science 368, p. 417). The authors suggested that water quality has been improving, thereby challenging recent reports documenting drastic global declines in freshwater biodiversity. We raise two major concerns with the meta‐analysis and suggest that these account for the discrepancy with the declines reported elsewhere. First, total abundance and biomass alone are poor indicators of the status of freshwater insect assemblages, and the observed differences may well have been driven by the replacement of sensitive species with tolerant ones. Second, many of the datasets poorly represent global trends and reflect responses to local conditions or nonrandom site selection. We conclude that the results of the meta‐analysis should not be considered indicative of an overall improvement in the condition of freshwater ecosystems.
Background: The aim of this study was to evaluate post‐irradiation changes in the central nervous system (CNS) detected using magnetic resonance (MR) imaging.
Methods: Magnetic resonance images of 15 children with CNS tumors treated through whole‐brain irradiation over 10 years were reviewed retrospectively. Variables such as age at the time of irradiation, total radiation dose, treatment length, and time interval between irradiation and MR changes, were evaluated.
Results: All patients included in the study had imaging abnormalities of the CNS. Eight patients (53%) developed CNS abnormalities within a short period of time – only a few months after irradiation (mean 4.8 months). Seven patients (47%) developed CNS abnormalities within a long time interval after treatment (mean 4.6 years). In almost all patients, a T2 increase in supra‐ and infratentorial white matter was observed. Follow‐up examinations showed nine patients (60%) with cerebellar atrophy.
Conclusions: In this sample of pediatric patients who underwent whole‐brain irradiation, the time receiving irradiation was not related to the severity of the MR changes. A correlation between the age of the child or the length of the radiotherapy and the extent of the changes could not be confirmed. However, we observed a trend towards stronger brain parenchymal degeneration with cystic changes in the younger age group of children in our sample. Older children who received irradiation seem to be more susceptible to vascular dysplasia with cavernous hemangiomas and microbleeding.
Abstract
The mineralogy, chemical composition, and physical properties of cratonic mantle eclogites with oceanic crustal protoliths can be modified by secondary processes involving interaction with fluids and melts, generated in various slab lithologies upon subduction (auto‐metasomatism) or mantle metasomatism after emplacement into the cratonic lithosphere. Here we combine new and published data to isolate these signatures and evaluate their effects on the chemical and physical properties of eclogite. Mantle metasomatism involving kimberlite‐like, ultramafic carbonated melts (UM carbonated melts) is ubiquitous though not pervasive, and affected between ~20% and 40% of the eclogite population at the various localities investigated here, predominantly at ~60–150 km depth, overlapping cratonic midlithospheric seismic discontinuities. Its hallmarks include lower jadeite component in clinopyroxene and grossular component in garnet, an increase in bulk‐rock MgO ± SiO2, and decrease in FeO and Al2O3 contents, and LREE‐enrichment accompanied by higher Sr, Pb, Th, U, and in part Zr and Nb, as well as lower Li, Cu ± Zn. This is mediated by addition of a high‐temperature pyroxene from a UM carbonated melt, followed by redistribution of this component into garnet and clinopyroxene. As clinopyroxene‐garnet trace‐element distribution coefficients increase with decreasing garnet grossular component, clinopyroxene is the main carrier of the metasomatic signatures. UM carbonated melt‐metasomatism at >130–150 km has destroyed the diamond inventory at some localities. These mineralogical and chemical changes contribute to low densities, with implications for eclogite gravitational stability, but negligible changes in shear‐wave velocities, and, if accompanied by H2O‐enrichment, will enhance electrical conductivities compared to unenriched eclogites.
Plain Language Summary
Oceanic crust formed at spreading ridges is recycled in subduction zones and undergoes metamorphism to eclogite. Some of this material is captured in the overlying lithospheric mantle, where it is exhumed by passing magmas. Having formed in spreading ridges, these eclogites have proven invaluable archives for the onset of plate tectonics, for the construction of cratons during subduction/collision, as probes of the convecting mantle from which their precursors formed, and as generators of heterogeneity upon recycling into Earth's convecting mantle. During subduction and until exhumation, interaction with fluids and melts (called metasomatism) can change the mineralogy, chemical composition, and physical properties of mantle eclogites, complicating their interpretation, but a comprehensive study of these effects is lacking so far. We investigated mantle eclogites from ancient continents (cratons) around the globe in order to define hallmarks of metasomatism by subduction‐related fluids and small‐volume ultramafic carbonated mantle melts. We find that the latter is pervasive and occurs predominantly at midlithospheric depths where seismic discontinuities are detected, typically causing diamond destruction and a reduction in density. This has consequences for their gravitational stability and for the interpretation of shearwave velocities in cratons.