1,721,141 research outputs found
Total body skin temperature of runners during treadmill exercise
No full textThe aim of this study was to investigate the time-evolution of total body skin temperature during running exercise on treadmill. A group of physically active subjects performed two different treadmill exercises, at graded load and at constant load, for a duration of 30 minutes, in a moderate indoor environment. Thermal maps of the anterior and posterior body regions were gathered, before, during and after the exercise, by means of infrared thermography. Skin temperature of total body was calculated as a combination of individual measurements taken over several body regions. Within the limits due to the relatively small size of the sample group, results typically show a fall in total body skin temperature during the early stages of treadmill exercise. As the exercise progresses, the dynamics of the skin temperature response is affected by the type of exercise, showing a further decrease during the graded load exercise and a slight increase during the constant load exercise. Regionally averaged skin temperatures were found to be lower than total body skin temperature over the most peripheral body regions less involved in running (upper limbs) and comparable with or higher than total body skin temperature over calves and thighs
Three dimensional in vitro organ culture model of potential application in pediatric surgery.
No full textSaggio di analisi del territorio nella Sardegna centrale
No full textThis research starts with an attempt to determine the patterns of territorial organization and to individualize the models of settlements in relation to the various geomorphological variables in an area of archaeological interest. With reference to the Nuragic age a wide area, that of the Tirso Middle Valley, was considered, within which was possible to define a trend in the locational choice of a settlement in relation to the morphological factors and to the presence of water resources both in the case of the nuraghi a corridoio, and in that of the nuraghi a tholos.
Moreover, the application of a graphic model like that of Thiessen's polygons allowed us to identify a sort of territorial organization subdivided into theoretical districts of different dimensions. The exiguity of the available data led us to analyse a more limited zone, a sample area relating to the territory of the Ottana commune.
The investigation of the geopedological characters relative to a sphere close to the Nuragic site permitted us, therefore, to formulate some hypotheses on the economic choices of the community gravitating to the nuraghi a corridoio and a tholos and allowed us to outline a more ample and complete picture of the human occupation of the territory in Nuragic times
Focolari e bracieri tra il Neolitico e l'Eneolitico in Sardegna.
No full textSUMMARY - Fireplaces and braziers in Sardinia between the late Neolithic Age and the Copper Age - Some funerary hypogea of the Late Neolithic Age of Sardinia show a reproduction of both structural (pillars, beams, roof) and functional (doors, stairs etc.) elements of a house at their inside. The representation of a circular fireplace situated in the middle of the main room and realized through the techniques of incision or relief proves to be noteworthy among the other functional elements. At he present time this element does not have any counterpart in coeval ceramic, lithic or metal handmade articles. Only a single ceramic exemplar of brazier belonging to the Chalcolithic culture of Monte Claro could be considered the copy of a former well-known model
Use of multispectral and thermal imagery in precision viticulture
No full textThe increasing demand for higher quality and yield of wine production has led to a growing interest in precision viticulture, i.e., practices of monitoring and managing spatial variations in variables related to productivity within a vineyard. This paper presents a few applications of optical measurements, in combination with monitoring systems making use of geolocation and remote/proximal sensing, to calculate vegetation indices related to plant vigour and water stress in vineyards. Measurements were performed on vineyards in Burgenland, Austria, by both aerial and proximal (terrestrial) sensing techniques. A remote-sensing, four-band multispectral sensor, placed on an Unmanned Aerial Vehicle (UAV), has been used to detect the spectral signature of the vineyard and to calculate the NDVI index, useful to selectively address the harvest on the basis of quality and quantity of grapes. Proximal, thermal infrared imaging complemented the investigation providing information about the water status of the vegetation through the CWSI index. Examples of vigour maps are provided, showing, inside a given parcel, the presence of canopies at different level of vegetation characteristics. Results provide a range of information useful to make the optimal choice in management strategies of vineyards
L’insediamento di Serra Linta a Sedilo (OR)
No full textVengono illustrati i caratteri e i materiali archeologici dell'insediamento neolitico perifluviale di Serra Linta
Different activation of dopamine neurotransmission by typical and atypical antipsychotics
No full textBlunting of reactivity of dopamine transmission to palatable food: a biochemical marker of anhedonia in the CMS model?
No full textAn experimental and numerical study of laminar natural convection along vertical rib-roughened surfaces
No full textAir natural convection along a vertical surface periodically roughened with wooden ribs, square in section
and either spanwise-elongated or truncated and arranged in a staggered pattern, is investigated at a Rayleigh
number of 2 × 107, which corresponds to a stable buoyant air flow. The influence of roughness on local and
overall convective heat transfer was analyzed experimentally via schlieren imaging and extensive energy balance
calculations and numerically through both conventional and homogenization-based CFD (computational fluid
dynamics) simulations. For the considered range of the rib pitch-to-height ratio (from 3.5 to 20), the continuous,
transverse elements were generally found to degrade the local and overall convective heat transfer, with the
deterioration becoming more pronounced when the ribs are densely packed on the surface. Furthermore, even
staggered truncated ribs failed to provide any local/overall enhancement to convective heat transfer. The
simulations performed via the homogenization-based treatment, which represents an easier alternative to the
standard fine-grained numerical analysis, led to heat transfer trends in line with those obtained by fully resolving
simulations and experiments. Both numerical approaches showed that the conjugate heat transfer problem must
be tackled in the case of low-thermal-conductivity ribs since the solution, in terms of heat transfer characteristics,
is intermediate between the cases of adiabatic and perfectly conducting elements
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