Search results for "Drag"
showing 10 items of 179 documents
L’origine dei feudi nei Regni di Napoli e Sicilia nell’opera di Giacinto Dragonetti
2016
The article focuses on Giacinto Dragonetti’s Origins of the Fiefs in the Neapolitan and Sicilian Kingdom. The book was published in 1788 as expression of the governmental policy concerning the good interpretation of the Volentes chapter and the right exerted by the fiscal system on the fiefs without heirs. Through a detailed analysis of the text and the context into which it was written, the article aims to deepen the knowledge of the cultural changes caused by the intertwining among historiography, politics and law into the framework of the discussions relating the feudal matter in the second half of the Eighteenth century. Paying particular attention to the epistemological and methodologi…
The larva of Gomphus davidi Selys, 1887
1983
The female exuvia and last larval stage of Gomphus davidi Selys, 1887, a dragonfly endemic in the Middle East are described and figured. Distinctive characters of two sympatric Gomphus-species are provided.
Toward Mechanistic Design of Surrogate Buffers for Dissolution Testing of pH-Dependent Drug Delivery Systems
2020
The in vivo dissolution of enteric-coated (EC) products is often overestimated by compendial in vitro dissolution experiments. It is of great interest to mimic the in vivo conditions as closely as possible in vitro in order to predict the in vivo behavior of EC dosage forms. The reason behind this is the overly high buffering capacity of the common compendial buffers compared to the intestinal bicarbonate buffer. However, a bicarbonate-based buffer is technically difficult to handle due to the need for continuous sparging of the media with CO2 to maintain the desired buffer pH. Therefore, bicarbonate buffers are not commonly used in routine practice and a non-volatile alternative is of inte…
Dragones y santos militares en la hagiografía bizantina
2020
Resumen: Este artículo analiza la relación entre dragones y santos militares en la hagiografía bizantina desde una perspectiva literaria. El análisis se centrará en las leyendas de San Teodoro o San Jorge, así como en milagros de San Menas o de Eugenio de Trebisonda.
Global Linear Stability Analysis of the Flow Around a Superhydrophobic Circular Cylinder
2016
International audience; Over the last few years, superhydrophobic (SH) surfaces have been receiving an increasing attention in many scientific areas by virtue of their ability to enhance flow slip past solid walls and reduce the skin-friction drag. In the present study, a global linear-stability analysis is employed to investigate the influence of the SH-induced slip velocity on the primary instability of the 2D flow past a circular cylinder. The flow regions playing the role of 'wavemaker' are identified by considering the structural sensitivity of the unstable mode, thus highlighting the effect of slip on the global instability of the considered flow. In addition, a sensitivity analysis t…
Le “combat des derniers temps“ à Langres : Henri II en saint Michel terrassant le dragon (v. 1548) de Jean Duvet
2017
International audience
Two-Leg Squat Jumps in Water: An Effective Alternative to Dry Land Jumps
2009
The current study was designed to quantify and compare the kinetic parameters of two-leg squat jumps carried out on dry land, in water and in water using area devices that increase drag force. Twelve junior female handball players who had been competing at national level for the previous two years volunteered to participate in the study. Intensity of the two-leg squat jump was examined using a force plate (9 253-B11, Kistler Instrument AG, Winterthur, Switzerland) in three different conditions: on dry land, in water and in water using devices. An ANOVA with repeated measurements (condition) was applied to establish differences between the three jumps. The results show that peak impact force…
Numerical prediction of ventilated planing flat plates for the design of Air Cavity Ships
2017
In recent years, a great world issue is the respect for the environment. Each researcher, in his competence field, proposes new technologies and new approaches in order to reduce the environmental impact of a product or of an industrial process. In the naval field, the main way in order to reduce the environmental impact of the ship during the navigation is the reduction of the drag resistance and so the reduction of requested power. There are many ways in order to obtain a reduction of drag. This paper investigates, with a preliminary numerical study by means of Computational Fluid Dynamics (CFD), the Air Cavity Ships technology (ACS). A first part of the paper concerns the study of the ri…
Biomechanics of sprint running. A review.
1992
Understanding of biomechanical factors in sprint running is useful because of their critical value to performance. Some variables measured in distance running are also important in sprint running. Significant factors include: reaction time, technique, electromyographic (EMG) activity, force production, neural factors and muscle structure. Although various methodologies have been used, results are clear and conclusions can be made. The reaction time of good athletes is short, but it does not correlate with performance levels. Sprint technique has been well analysed during acceleration, constant velocity and deceleration of the velocity curve. At the beginning of the sprint run, it is importa…
Alla ricerca della sicurezza e della qualità: il modello di miglioramento dell'Oncologia Medica nel Policlinico Universitario di Palermo
2015
[In search of safety and quality: the improvement model proposed by the Oncology Department of the Palermo University] Over the past 20 years the field of oncology has product therapeutic innovations that have radically changed the prognosis of the most prevalent malignancies, since introduction of so-called targeted molecular agents. As a result of these changes, also the management of cancer patients has become more complex requiring technologies and skills that involve many professionals (medical oncologists, biologists, molecular geneticists, surgeons, pathologists, radiologists, nurses and psychologists), each engaged in a different stage of the disease, with the common goal of ensurin…