Search results for "TSC"
showing 10 items of 320 documents
The coralline red alga Lithophyllum kotschyanum f. affine as proxy of climate variability in the Yemen coast, Gulf of Aden (NW Indian Ocean)
2014
Abstract Recent investigations have shown the potential of red coralline algae as paleoclimatic archive. A previously unexplored subfamily of coralline algae, the Lithophylloideae, was investigated from the Gulf of Aden (Balhaf, Yemen). Seasonal changes in Mg/Ca, Li/Ca and Ba/Ca composition of Lithophyllum kotschyanum f. affine were investigated by Laser Ablation-Inductively Coupled Plasma Mass Spectrometry (LA-ICP-MS). For the first time in coralline algae, the Li/Ca composition was analyzed and showed a highly significant and positive correlation with Mg/Ca and SST. Monthly algal Mg/Ca and Li/Ca variations indicate a positive correlation with sea surface temperature (SST), and sea surface…
Potential of New and Renewable Energy in Merauke Regency as the Future Energy
2020
Electricity consumption in Merauke Regency increases every year in line with economic growth and population growth. Meanwhile, fossil energy reserves as fuel for power plants have decreased. To reduce dependence on fossil energy and offset the increase in electricity consumption it is necessary to develop alternative electrical energy sourced from renewable energy. Merauke Regency has great potential for renewable energy derived from biomass, solar, and wind. A study or analysis is needed to be able to estimate the energy potential that can be developed in an area. This study uses data collection techniques and analysis of the potential for renewable energy in Merauke Regency using RETScree…
The Donation Act of Hagi Constantin Pop’s Family for the Annunciation Church in Sibiu
2020
This article presents an important document relating to the history of an Orthodox church in Sibiu (Biserica din Groapă), whose construction was possible due to the support provided by the family of the wealthy Macedonian-Romanian merchant Hagi Constantin Pop, at the beginning of the nineteenth century. After a thorough description of the document, we will provide both the German transcription and the English translation of the text. The notes and comments that accompany the document are meant to shed light upon the historical context in which the church was raised and to emphasize the importance of the document, which is the oldest one preserved in the archives of the Annunciation Church. …
Triterpene saponins from Eryngium kotschyi
2015
Four new oleanane-type saponins 3-O-alpha-L-rhamnopyranosyl-(1 -> 4)-beta-D-glucuronopyranosyl-22-O-beta, beta-dimethylacryloylA1-barrigenol (1), 3-O-alpha-L-rhamnopyranosyl-(1 -> 4)-beta-D-glucuronopyranosyl-22-O-angeloylA1-barrigenol (2), 3-O-beta-D-glucopyranosyl-(1 -> 2)-[beta-D-glucopyranosyl-(1 -> 6)]-beta-D-glucopyranosyl-21,22,28-O-triacetyl-(3 beta,21 beta,22 alpha)-olean-12-en-16-one (3), and 3-O-beta-D-glucopyranosyl-(1 -> 2)-glucopyranosyl-22-O-beta-D-glucopyranosylsteganogenin (4), along with the known 3-O-beta-D-galactopyranosyl-(1 -> 2)-[alpha-L-arabinopyranosyl-(1 -> 3)]-beta-D-glucuronopyranosyl-22-O-angeloylA1-barrigenol and 3-O-alpha-L-rhamnopyranosyl-(1 -> 4)-beta-D-gluc…
Presenegenin Glycosides from Securidaca welwitschii
2010
) Centre de Recherche Phytochimique, Universite´ de Lie`ge, Institut de Chimie-B6, Sart Tilman,B-4000-Lie`ge IThe five new presenegenin glycosides 1–5 were isolated from Securidaca welwitschii, together withone known sucrose diester. Compounds 1–4 were obtained as pairs of inseparable (E)/(Z)-isomers of a3,4-dimethoxycinnamoyl derivative, i.e., 1/2 and 3/4. Their structures were elucidated mainly by 2D-NMR techniques and mass spectrometry as 3-O-(b-d-glucopyranosyl)presenegenin 28-{O-b-d-xylopyr-anosyl-(1!4)-O-a-l-rhamnopyranosyl-(1!2)-O-[b-d-glucopyranosyl-(1!3)]-4-O-[(E)-3,4-dimeth-oxycinnamoyl]-b-d-fucopyranosyl} ester (1) and its (Z)-isomer 2, 3-O-(b-d-glucopyranosyl)presenege-nin 28-{O…
Neo-clerodane diterpenoids from Teucrium kotschyanum
1989
Abstract From the aerial parts of Teucrium kotschyanum three new neo-clerodane diterpenoids have been isolated. Their structures, (12R)-15,16-epoxy-19-nor-10α-neo-cleroda-4,13(16),14-triene-18,6β; 20,12-diolide (12-epiteucvidin), (12R)-15,16-epoxy-19-nor-neo-cleroda-4,13(16),14-triene-18,6β; 20,12-diolide (12-epiteufiin) and (12S,18R)-15,16-epoxy-6β-hydroxy-neo-cleroda-13(16),14-dien-20,12-olide-l8,19-hemiacetal (teukotschyn), have been established by chemical and spectroscopic means. In addition, ursolic acid, the flavones cirsimaritin and cirsiliol, and six previously known neo-clerodane diterpenoids (teucvidin, teuflin, teuscorodin, teucrin H2, teuscorodonin and montanin D) were also fou…
Sur la prise en compte de quelques conditions aux limites avec la méthode des éléments finis
2017
Ce cours a pour principal sujet la discrétisation de certaines conditions limites sur le bord d'un domaine à l'aide de la méthode des éléments finis. Nous étudions en particulier des problèmes elliptiques avec conditions de Dirichlet non-homogènes, puis avec conditions de Signorini. Les conditions de Signorini sont des conditions de contact unilatéral entre un solide et un support rigide. Différentes méthodes sont passées en revue, et nous détaillons l'analyse pour les méthodes classiques et celle de Nitsche.
Functional Assessment of Variants in the TSC1 and TSC2 Genes Identified in Individuals with Tuberous Sclerosis Complex
2011
The effects of missense changes and small in-frame deletions and insertions on protein function are not easy to predict, and the identification of such variants in individuals at risk of a genetic disease can complicate genetic counselling. One option is to perform functional tests to assess whether the variants affect protein function. We have used this strategy to characterize variants identified in the TSC1 and TSC2 genes in individuals with, or suspected of having, Tuberous Sclerosis Complex (TSC). Here we present an overview of our functional studies on 45 TSC1 and 107 TSC2 variants. Using a standardized protocol we classified 16 TSC1 variants and 70 TSC2 variants as pathogenic. In add…
Automated scoring of teachers’ pedagogical content knowledge : a comparison between human and machine scoring
2020
To validly assess teachers’ pedagogical content knowledge (PCK), performance-based tasks with open-response formats are required. Automated scoring is considered an appropriate approach to reduce the resource-intensity of human scoring and to achieve more consistent scoring results than human raters. The focus is on the comparability of human and automated scoring of PCK for economics teachers. The answers of (prospective) teachers (N = 852) to six open-response tasks from a standardized and validated test were scored by two trained human raters and the engine “Educational SCoRIng Toolkit” (ESCRITO). The average agreement between human and computer ratings, κw = 0.66, suggests a convergent …
Nietzsche y los animales
2020
Pese a su cuidada falta de sistemática, el animal, el que somos y con los que convivimos, es un tema central en Nietzsche. La primera parte de la tesis es “La crítica de la Razón impura”. Un análisis epistemológico de la validez del conocimiento racional para la vida; en el fondo, una elección moral. El lenguaje refuerza al hombre como especie frente a otros animales. La segunda parte, “Construyendo al animal”, aborda la relación entre naturaleza y cultura. El animal es una construcción cultural de un hombre que se desconoce, que se siente inseguro y construye un muro: el de la dignidad humana, un muro especista. El olvido es el guardián de ese templo de la dignidad humana. La tarea creativ…