Search results for " vol"
showing 10 items of 3179 documents
Coordination mechanisms and parent-subsidiary relationships in volatile environments: a theoretical approach
2015
Este trabajo es una reflexión sobre cómo puede influir la volatilidad del entorno local de una filial sobre los mecanismos de coordinación que estructuran las relaciones matriz-filial: centralización, formalización y socialización, en presencia de algunos factores de contingencia tales como el enfoque estratégico de la multinacional, el país de origen, la complejidad, el tamaño y la edad. De igual manera se emplea la tipología sobre las relaciones matriz-filial de Ghoshal y Nohria (1989) para valorar su aplicabilidad en entornos volátiles. A partir de los razonamientos realizados se plantean algunas proposiciones y se presenta como principal conclusión que, en entornos volátiles, las relaci…
Meccanica del volo dei velivoli ad ala fissa
2018
La meccanica del volo studia le traiettorie e le caratteristiche del moto di un aeromobile sotto l'azione delle forze aerodinamiche, propulsive e inerziali.
Meccanica del volo dei velivoli ad ala rotante
2018
Si definisce elicottero un aeromobile che trae la propria sostentazione e propulsione dalla forza prodotta da uno o più rotori azionati da un motore ed aventi asse verticale
Dating archaeological strata in the Magna Mater temple using solid-state voltammetric analysis of leaded bronze coins
2017
[EN] The application of solid state electrochemistry techniques for dating archaeological strata using lead-containing bronze coins is described. The proposed methodology was applied to samples coming from the Roman archaeological site of Magna Mater Temple (Rome, Italy) occurring in different strata dating back between the second half and the end of the 4(th) century A.D. and the 20(th) century. The voltammetric signatures of copper and lead corrosion products in contact with aqueous acetate buffer, as well as the catalytic effects produced on the hydrogen evolution reaction, were used for establishing the age of different strata and dating coins belonging to unknown age. Voltammetric data…
Mediación y jurisdicción voluntaria en el marco de la modernización de la justicia. una aproximación a la legislación española
2013
ResumenLa máxima legal Justicia retrasada es justicia denegada, es hoy sin embargo una realidad. Las personas demandan agilidad y requieren de una solución medianamente pronta y cercana a sus intereses, no es acertado que en un mundo dominado por la tecnología, la burocracia jurídica y administrativa en torno a la impartición de la justicia mantenga un ritmo lento. A nivel internacional se buscan fórmulas de solución pronta y económica de los conflictos, en este camino se impulsan entre varias vías jurídicas, por una parte la jurisdicción voluntaria, por otra parte la mediación, en ambas se trata de agilizar procedimientos, sin embargo la naturaleza jurídica de cada una de ellas es diferent…
Data from: Maternal antibodies contribute to sex based difference in hantavirus transmission dynamics
2014
Individuals often differ in their ability to transmit disease and identifying key individuals for transmission is a major issue in epidemiology. Male hosts are often thought to be more important than females for parasite transmission and persistence. However, the role of infectious females, particularly the transient immunity provided to offspring through maternal antibodies (MatAbs), has been neglected in discussions about sex-biased infection transmission. We examined the effect of host sex upon infection dynamics of zoonotic Puumala hantavirus (PUUV) in semi-natural, experimental populations of bank vole (Myodes glareolus). Populations were founded with either females or males that were …
Mechanisms of Cell-Volume Regulation in the Central Nervous System
2017
Function and viability of every cell is dependent on the proper control of its shape and volume. In the brain, which is protected by a rigid outer shell, cell-volume regulation is of particular importance, since large volume changes affect cerebral perfusion and, hence, function. Neuronal activation leads to constant changes of the ionic and metabolic composition of the brain’s extracellular space. These changes are buffered by astrocytes on the expense of constant changes in cell volume. Under pathological conditions, the ability of astrocytes to maintain the homeostasis of the brain is overwhelmed and permanent cell swelling, cytotoxic edema, occurs. The current chapter describes the prin…
Optical multichannel monitoring of skin blood pulsations for cardiovascular assessment
2004
Time resolved detection and analysis of the skin back-scattered optical signals (reflection photoplethysmography or PPG) provide rich information on skin blood volume pulsations and can serve for cardiovascular assessment. The multichannel PPG concept has been developed and clinically verified in this work. Simultaneous data flow from several body locations allows to study the heartbeat pulse wave propagation in real time and to evaluate the vascular resistance. Portable two- and four-channel PPG monitoring devices and special software have been designed for real-time data acquisition and processing. The multi-channel devices were successfully applied for cardiovascular fitness tests and fo…
ESRA19-0692 Which preoperative tests before regional anaesthetic procedures?
2019
As we know, any regional anaesthesia technique stays under failure risks. What anaesthetists have to know about the regional block before let the surgeons start after regional anaesthesia? There are few positions which should be confirmed by tests. Firstly, detect the onset of successful sensitive, motor and sympathetic block. Secondly, confirm the correct area of the regional block. Furthermore, the anaesthetist should understand if the regional block performed under deep sedation or general anaesthesia will be effective also after the surgery. What we have to remember and what we need to check for this reason? Pain is subjective phenomenon. Are we determined as dependent on the patient‘s …
An automatic method for metabolic evaluation of gamma knife treatments
2015
Lesion volume delineation of Positron Emission Tomography images is challenging because of the low spatial resolution and high noise level. Aim of this work is the development of an operator independent segmentation method of metabolic images. For this purpose, an algorithm for the biological tumor volume delineation based on random walks on graphs has been used. Twenty-four cerebral tumors are segmented to evaluate the functional follow-up after Gamma Knife radiotherapy treatment. Experimental results show that the segmentation algorithm is accurate and has real-time performance. In addition, it can reflect metabolic changes useful to evaluate radiotherapy response in treated patients.