2,665 research outputs found
Una integrazione a Pindaro, Fr. 70 d Snell-Maehler’
No full textThe paper suggests a new textual supplement in a fragmentary papyrus text (P. Oxy. 2445, fr. 1, col. 2, line 15 = Pindar Fr. 70 v. 40 Snell-Maehler). Instead of θεάμα]τ’ (Snell's supplement) read ὄμμα]τ’: the word alludes to the power of the eyes of the Gorgon
Leyes de la reflexión y refracción. Ley de Snell
No full textExperimento práctico que permite al aluno verificar l validad de la Ley de Snell a partir de la observación de la relación entre el ángulo de reflexión de la luz y el ángulo de refracción de la luz en función del ángulo de incidencia de la luzNociones básicas de geometría y construcción de gráficosEducação Superior::Ciências Exatas e da Terra::FísicaEnsino Médio::Físic
Leyes de la reflexión y refracción. Ley de Snell
No full textExperimento práctico que permite al aluno verificar l validad de la Ley de Snell a partir de la observación de la relación entre el ángulo de reflexión de la luz y el ángulo de refracción de la luz en función del ángulo de incidencia de la luzNociones básicas de geometría y construcción de gráficosEducação Superior::Ciências Exatas e da Terra::FísicaEnsino Médio::Físic
Leyes de la reflexión y refracción. Ley de Snell
No full textExperimento práctico que permite al aluno verificar l validad de la Ley de Snell a partir de la observación de la relación entre el ángulo de reflexión de la luz y el ángulo de refracción de la luz en función del ángulo de incidencia de la luzNociones básicas de geometría y construcción de gráficosEducação Superior::Ciências Exatas e da Terra::FísicaEnsino Médio::Físic
Autogenerazione della divinità. Da Crizia (frammenti 3 e 4 Snell-Kannicht) al dio cristiano
No full textThe adjective autophyés, which is well attested as an epithet of the Christian God, appears also in the pagan oracles (see Lactantius, Divinae institutiones 1,7,1). The most ancient source in which autophyés is used in relation to the highest god goes as far back as the 5th century B.C. This adjective is in fact present in fragment 4 Snell-Kannicht. The five anapaests in fragment 4 Sn.-K belong to the lost tragedy Pirithous, which has been attributed to Euripides, but was probably composed by Critias. The identity of the god addressed in this fragment has been disputed and is problematic. According to the most widely-accepted hypothesis, this god (in what corresponds to an orphic view) ought to be identified with Time who is called tíkton autòs heautón in a different fragment (3 Snell-Kannicht) from the same work. Supported by Satyrus, Vita Euripidis fragmentum 37 I, II and III (92-94 Schorn), the author suggests that the Pirithous writer very deliberately chose not to identify the god addressed in fragment 4 Snell-Kannicht. Regarding the concept of the god’s self-generation, which is present in both the fragments from Pirithous, the author emphasizes the great importance this has for the transmission of these fragments by Clement of Alexandria
Conservation of Galápagos land iguanas: genetic monitoring and predictions of a long-term program on the island of Santa Cruz
No full textThe distribution of the Galápagos land iguanas Conolophus subcristatus has been strongly affected by human activities in the last century. Previously widespread throughout the whole archipelago, today they inhabit only few islands, with populations often small and isolated. In this study, we analyzed the population genetic structure of land iguanas from Santa Cruz Island to investigate the genetic implications of a semi-captive conservation program that started in middle 1970s and is still ongoing. Nine microsatellites were used to measure the level of genetic variability and to detect potential evidence of inbreeding and genetic sub-structure. Furthermore, we used approximate Bayesian computation, together with software packages for coalescent-based simulations, to test a priori hypotheses in different demographic scenarios. Despite the abrupt reduction in size of the original population, no evidence of inbreeding was found, and the levels of genetic variability were similar to those of undisturbed populations of the archipelago. Nevertheless, the source and the repatriated populations started differentiating (FST=0.016) and genetic sub-structure was found. Following our results and the simulation of possible future scenarios, we suggest the genetic measures that should be adopted to avoid further genetic variability depletion and preserve this vulnerable endemic species
Evaluation of the atrial evoked response for capture detection with high-polarization leads.
No full textAutoCapture based on the evoked response can be confounded by electrode
polarization. In this study, polarization was measured in human subjects who had
chronic atrial leads. The aim of the study was to determine whether electrode
polarization can be measured using a time integral atrial evoked-response
integral (AERI) of the negative portion of the atrial paced ER evoked-response
signal and to determine whether high-polarization atrial leads unsuitable for
AutoCapture can be identified a priori. Atrial intracardiac-electrogram (IEGM)
signals from 39 patients with implanted pacemakers were recorded and analyzed.
The signals were recorded during conventional atrial-threshold searches. A total
of 221 atrial-capture thresholds were recorded, ranging from 0.25 to 2.75 V with
a mean of 0.79 V. Each evoked response was evaluated using the AERI in a 36 ms
window following the 0.4 ms atrial stimulus. The polarization was estimated as a
linear function of stimulus voltage using the evoked-response signal integral of
captured beats identified on the IEGM. The 221 threshold-search datasets were
obtained using leads with eight different electrode materials. Polarization
could be measured using AERI as a function of stimulus voltage. Furthermore,
this polarization measure can be used to identify high-polarization leads, which
are ill suited for the atrial AutoCapture algorithm
The application of the theory of norms to the translations of international treaties : a case study of the Jordan-Israel peace treaty
No full textEThOS - Electronic Theses Online ServiceGBUnited Kingdo
Low utilization of circulating glucose after food withdrawal in Snell dwarf mice.
No full textGlucose metabolism is altered in long-lived people and mice. Although it is clear that there is an association between altered glucose metabolism and longevity, it is not known whether this link is causal or not. Our current hypothesis is that decreased fasting glucose utilization may increase longevity by reducing oxygen radical production, a potential cause of aging. We observed that whole body fasting glucose utilization was lower in the Snell dwarf, a long-lived mutant mouse. Whole body fasting glucose utilization may be reduced by a decrease in the production of circulating glucose. Our isotope labeling analysis indicated both gluconeogenesis and glycogenolysis were suppressed in Snell dwarfs. Elevated circulating adiponectin may contribute to the reduction of glucose production in Snell dwarfs. Adiponectin lowered the appearance of glucose in the media over hepatoma cells by suppressing gluconeogenesis and glycogenolysis. The suppression of glucose production by adiponectin in vitro depended on AMP-activated protein kinase, a cell mediator of fatty acid oxidation. Elevated fatty acid oxidation was indicated in Snell dwarfs by increased utilization of circulating oleic acid, reduced intracellular triglyceride content, and increased phosphorylation of acetyl-CoA carboxylase. Finally, protein carbonyl content, a marker of oxygen radical damage, was decreased in Snell dwarfs. The correlation between high glucose utilization and elevated oxygen radical production was also observed in vitro by altering the concentrations of glucose and fatty acids in the media or pharmacologic inhibition of glucose and fatty acid oxidation with 4-hydroxycyanocinnamic acid and etomoxir, respectively
La fatica dei canti: tragedia, commedia e dramma satiresco nel frammento adespoto 646a TrGF
No full textThe paper discusses the genre of the anonymous fragment published in R. Kannicht-B. Snell, TrGF vol. 2, Fragmenta adespota, n. 646a, analyzing its metre and discussing problems of literary and philological interpretation
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