Search results for "Etre"
showing 10 items of 350 documents
Cryopreservation of Limonium serotinum apical meristems from in vitro plantlets using droplet-vitrification
2011
Abstract In this study in vitro shoot tips of a Sicilian genotype of Limonium serotinum were successfully cryopreserved using the droplet-vitrification technique. Growth recovery of cryopreserved shoot tips was possible only when samples were pretreated for 16 h in liquid medium with 0.3 M sucrose, then for 5 h in liquid medium with 0.7 M sucrose before performing the cryopreservation protocol. Optimal conditions included treatment for 20 min in a loading solution containing 1.9 M glycerol + 0.5 M sucrose, treatment with vitrification solution B5 (glycerol 40.0%, sucrose 40.0%, w/v) for 60 and 90 min or vitrification solution A9 (glycerol 30.0%, dimethylsulfoxide 20.0%, ethylene glycol 20.0…
Ancient genres in the poem of a medieval humanist: Intertextual aspects of the “De sufficientia votorum suorum” (c. 126 H.) of Baudri de Bourgueil (1…
1995
In the second half of the 11th century, a humanist circle of clerical poets, living around the central valley of the Loire, was writing poetry in classical language and metre. Baudriu of Bougueil, who wrote an impressive corpus of Latin poems, was an expert in the language, style, verse, motifs and genres of the classical and later antique pagan and Christian poetry, and treated theological as well as profane and explicitly ancient topics. About 1107, when he was urged to become bishop and to abandon, his personal independence and quiet monastic life, he gave voice to his disgust of the new ecclesiastical burden by a long poem in elegiac distichs. This paper tries to show the ancient genres…
Industrial Environment Mapping Using Distributed Static 3D Sensor Nodes
2018
This paper presents a system architecture for mapping and real-time monitoring of a relatively large industrial robotic environment of size 10 m × 15 m × 5 m. Six sensor nodes with embedded computing power and local processing of the 3D point clouds are placed close to the ceiling. The system architecture and data processing is based on the Robot Operating System (ROS) and the Point Cloud Library (PCL). The 3D sensors used are the Microsoft Kinect for Xbox One and point cloud data is collected at 20 Hz. A new manual calibration procedure is developed using reflective planes. The specified range of the used sensor is 0.8 m to 4.2 m, while depth data up to 9 m is used in this paper. Despite t…
A multi-technique, micrometer- to atomic-scale description of a synthetic analogue of chukanovite, Fe-2(CO3)(OH)(2)
2014
International audience; A synthetic analogue of chukanovite Fe-2(CO3)(OH)(2) is formed during experimental work on iron-clay interactions simulating the cooling of containers in radioactive waste repositories. Despite its small size and the mixture with other minerals it is undoubtedly identified by X-Ray Diffraction, Fourier Transform Infrared Spectroscopy, Scanning Electron Microscopy and Transmission Electron Microscopy. For the first time, the structural characterisation of a synthetic chukanovite is carried out thanks to the combination of Automated Diffraction Tomography and Precession Electron Diffraction. Refinement results and comparison with literature data show that the structure…
Molecular coupling of light with plasmonic waveguides.
2007
We use molecules to couple light into and out of microscale plasmonic waveguides. Energy transfer, mediated by surface plasmons, from donor molecules to acceptor molecules over ten micrometer distances is demonstrated. Also surface plasmon coupled emission from the donor molecules is observed at similar distances away from the excitation spot. The lithographic fabrication method we use for positioning the dye molecules allows scaling to nanometer dimensions. The use of molecules as couplers between far-field and near-field light offers the advantages that no special excitation geometry is needed, any light source can be used to excite plasmons and the excitation can be localized below the d…
Combined treatment of epidermodysplasia verruciformis with etretinate and α-interferon*
1992
Epidermodysplasia verruciformis (EV) is an uncommon cutaneous disease in which a focal and genetically determined immunological impairment is associated with chronic human papilloma virus (HPV) infection. In sun-exposed areas, when an oncogenic HPV type is the agent, skin cancer may occur. The treatment of EV is difficult and often unsatisfactory; etretinate has been reported in some instances as effective in improving lesions. We report a typical case of EV with pityriasis versicolor-like lesions on the trunk and many flat, erythematous wart-like lesions on the face, dorsal areas of the hands and legs. We performed a treatment with etretinate (1 mg/kg/day for 6 weeks) and subsequently with…
Prophylaxis of hemicrania continua: two new cases effectively treated with topiramate.
2007
Hemicrania continua (HC) is an uncommon and under-recognized primary headache disorder characterized by a strictly unilateral continuous headache of moderate intensity with possible exacerbations and associated with ipsilateral autonomic features. HC has generally a prompt and enduring response to indomethacin although 25% to 50% of treated patients develop gastrointestinal side effects. These cases pose a difficult management challenge as no other drug is consistently effective in HC. Recently 2 HC patients responsive to topiramate treatment have been reported. Here we describe 2 more patients effectively treated with topiramate. Neither reported any side effects and one had persisting res…
Uncertainty and cross-border banking flows
2019
Abstract While global uncertainty—measured by the VIX—has proven to be a robust global “push” factor of international capital flows, there has been no systematic study assessing the role of uncertainty in driving bilateral capital flows. This paper examines the effects of higher country-specific uncertainty on cross-border banking flows using data from the Bank for International Settlements Locational Banking Statistics. The bilateral structure of this data allows disentangling supply factors from demand factors, thereby helping identify the effect of higher uncertainty on cross-border banking flows from other confounding factors. The results of this analysis suggest that: (i) uncertainty i…
Successful turnarounds in bankrupt firms? Assessing retrenchment in the most severe form of crisis
2019
During economic downturns, firms file for bankruptcy in an effort to attempt a “turnaround.” The objective of this study is to assess the effectiveness of retrenchment strategies in the context of bankruptcy, as the most severe form of crisis. We conducted a longitudinal analysis of a sample of 868 bankrupt Spanish firms during the period 2004–2017. The empirical results show that stakeholder support and deep cost retrenchment increase the likelihood of survival and performance recovery, while aggressive layoffs are detrimental for turning bankrupt firms around. Surprisingly, intense asset retrenchment had no significant effects on firm survival and also pushed performance downward. The fi…
The effect of round-off error on long memory processes
2011
We study how the round-off (or discretization) error changes the statistical properties of a Gaussian long memory process. We show that the autocovariance and the spectral density of the discretized process are asymptotically rescaled by a factor smaller than one, and we compute exactly this scaling factor. Consequently, we find that the discretized process is also long memory with the same Hurst exponent as the original process. We consider the properties of two estimators of the Hurst exponent, namely the local Whittle (LW) estimator and the Detrended Fluctuation Analysis (DFA). By using analytical considerations and numerical simulations we show that, in presence of round-off error, both…