Search results for "Planetary Science"

Regeneration in invertebrates

2008

The mechanisms of regeneration are reviewed from a genetic, cytological and molecular biological points of view. Planarians and Hydra have been chosen and illustrated as biological examples.

Morphology and function of the sutures in the dermal skull roof of Discosauriscus austriacus Makowsky; 1876 (Seymouriamorpha; Lower Permian of Moravi…

1995

Abstract Sutural patterns in the dermal skull roof were among others studied in Discosauriscus austriacus (Seymouriamorpha) and Onchiodon labyrinthicus (Temnospondyli). Main sutural structures are defined as lamellae; shelves; vertical walls; and grooves. These types have different functional manifestations. The basic pattern is described for Discosauriscus austriacus. Similarities of patterns in taxa not closely related are most likely a result of convergence. Intraspecific variability is generally low but can be observed during ontogeny. The patterns of subjacent areas in Eusthenopteron foordi (Osteolepiformes) are very similar to Discosauriscus austriacus. It is shown that sutural morpho…

Les pistes dinosauroïdes du Trias moyen français : interprétation et réévaluation de la nomenclature

2005

Resume De nombreuses traces de pieds dinosauroides, associees parfois avec la main, ont ete recoltees depuis 1960 dans les diverses formations greseuses de la base du Trias de la bordure orientale du Massif Central. Les niveaux a ichnites, dates par les donnees palynologiques, micropaleontologiques et palichnologiques sont compris dans l'intervalle Anisien-Ladinien inferieur. L'interpretation paleontologique de ces empreintes conduit a evoquer des Reptiles bipedes, digitigrades, aux membres posterieurs parasagittaux, ayant des mains pentadactyles et des pieds fontionnellement tridactyles II–IV, dont l'architecture osseuse est celle des Dinosaures Ceratosaures du Trias superieur. Les squelet…

La fiesta mutante. La construcción histórica de la Feria de Julio de Valencia

2014

[EN] In the present article it is tried to show as the holidays they are social historical constructions, which mutations are inseparable both of the diverse political contexts and of the institutional action. This one is the case of Julio's Fair of Valencia, founded in in 1871 under the requiriments of bourgeois taste. In our work we show, resting on historical documentation of press and file, the diverse stages of the evolution of the Fair, insisting in since there is modified his cultural institutional management. So if at firdt period of euphoria and ascent, the Feria de Valencia managed to become one of the most important festive events in Valencia, taking on a distinctly popular carac…

Deux nouvelles traces de pas de Dinosaures du Trias supérieur de la bordure cévenole (la Grand-Combe, Sud-Est de la France)

2000

Resume Dans une formation sommitale a Argiles bariolees du Trias superieur francais, deux niveaux a traces depas inedites de Dinosaures ont ete decouverts. Elles se rapportent a l'association Otozoum/Grallator qui n'a jamais ete definie precisement en Europe. Sa position stratigraphique precise dans la serie triasique et la comparaison avec les associations ichnologiques des USA et d'Afrique du Sud, confirment l'âge Norien des niveaux a empreintes. Otozoum grandcombensis nov. ichnosp. correspond a des traces de pieds et de mains tetradactyles de meme taille, laissees par un animal bipede occasionnellement quadrupede. Il s'agissait probablement d'un, grand Prosauropode, d'une dizaine de m de…

Duplication cycle in nuclei of germinating zoospores of Phytophthora drechsleri as revealed by DAPI staining

1982

Is it the time of seno-therapeutics application in cardiovascular pathological conditions related to ageing?

2021

It rates that in 2030, the cardiovascular diseases (CVD) will result in 40% of all deaths and rank as the leading cause. Thus, the research of appropriate therapies able to delay or retard their onset and progression is growing. Of particular interest is a new branch of the medical science, called anti-ageing medicine since CVD are the result of cardiovascular ageing. Senescent cells (SC) accumulate in cardiovascular system contributing to the onset of typical age-related cardiovascular conditions (i.e., atherosclerosis, medial aorta degeneration, vascular remodeling, stiffness). Such conditions progress in cardiovascular pathologies (i.e., heart failure, coronary artery disease, myocardial…

Analysis of thermal infrared data from the Digital Airborne Imaging Spectrometer

2001

Thermal infrared data of the Digital Airborne Imaging Spectrometer (DAIS), whose channels 74-79 are in the 8-13 w m waveband region, were analysed with the aim of recovering land surface temperature (LST). DAIS images were acquired over an experimental site where field and laboratory emissivity measurements were performed, and these were used to recover the LST from the six DAIS thermal channels. Atmospheric correction of DAIS data was calculated by means of a nearby radiosounding and a radiative transfer model. DAIS derived LSTs were compared with ground measurements of LST made coincidentally for a few test fields, the central DAIS channels yielding temperatures up to 10°C higher than gro…

Data lakes in business intelligence: reporting from the trenches

2018

Abstract The data lake approach has emerged as a promising way to handle large volumes of structured and unstructured data. This big data technology enables enterprises to profoundly improve their Business Intelligence. However, there is a lack of empirical studies on the use of the data lake approach in enterprises. This paper provides the results of an exploratory study designed to improve the understanding of the use of the data lake approach in enterprises. I interviewed 12 experts who had implemented this approach in various enterprises and identified three important purposes of implementing data lakes: (1) as staging areas or sources for data warehouses, (2) as a platform for experime…

Modelling of Water Supply Costs

2017

Water supply tariffs setting is a labour intensive regulatory procedure; currently number of informative and procedural shortages and problems exist. The aim of the current research is improvement of methodology for determination of the substantiated costs for provision of water services. A working hypothesis was advanced to modernize the methodology: the specific costs (/m3) required for the provision of water services in a specific region is a variable multi-parameter function of key performance indicators. There is preferred a benchmark modelling procedure, which is based on the factual cases (declared indicators of water utilities) and synthesis of the general regularity. The model is d…