Search results for "Long period"
showing 10 items of 50 documents
1993
This quote by J. Huxley reflects the present consensus between scientists, philosophers, and theologians alike, after a long period of fundamental disagreement on this crucial question for mankind.
El restabliment de la Companyia de Jesús a València
2018
Resum: L’expulsió de la Companyia de Jesús, decretada per Carles III el 1767, obrí un llarg període de foscor per als jesuïtes hispànics. Tanmateix, el cop de gràcia a l’orde vindria de la mà del papa Climent XIV, que, pressionat per la monarquia espanyola –l’ambaixador del rei hispànic a Roma Moñino recorregué a la coacció i al suborn d’afins al pontífex–, declarà extingida la Companyia el 21 de juliol del 1773. Els jesuïtes suprimits van conrear la propaganda durant més de quaranta anys per tal de revertir la situació. Finalment, el 1814 el papa Pius VII restablí l’orde jesuïta a tot el món mitjançant la butlla Sollicitudo omnium ecclesiarum, i els regulars ignasians van obtenir, un any d…
The influence of adult worm age and definitive host on the transmission of Echinostoma caproni: egg hatchability and miracidial infectivity.
2012
AbstractWe analysed the influence of different ages of Echinostoma caproni adult worms reared in different definitive host-species on egg hatchability and miracidial infectivity. Eggs obtained from 2-, 4- and 6-week-old adult worms collected from rats, hamsters and mice, hatched miracidia that were used to infect laboratory-reared specimens of Biomphalaria glabrata. Highest egg hatchability was obtained with eggs derived from hamsters and mice. Egg hatchability did not seem to be affected by the age of E. caproni adult worms. Miracidial infectivity was not affected by the definitive host species. However, miracidial infectivity was affected by the age of adult worms when they developed in t…
Sport and Quality of Life
2022
Negli ultimi trent’anni lo sport ha assunto un significato molto rilevante nella vita delle persone e, seppure con notevoli differenze, sia nei paesi a sviluppo economico avanzato, sia in quelli in via di sviluppo. A livello individuale, esso ha costituito un’area di investimento identitario quando ha assunto la forma di sport spettacolo del quale fruire, alimentando la pratica del tifo e il fandom o costituendo il modello di uno stile di vita vincente; ma anche quando ha assunto la forma di pratica del tempo libero attraverso la quale tenersi in forma, facendo crescere, in questo caso, la diffusione di una cultura della salute e del benessere. Si tratta di due modalità di approcciare al co…
Passive vs. active degassing modes at an open-vent volcano (Stromboli, Italy)
2012
Abstract We report here on a UV-camera based field experiment performed on Stromboli volcano during 7 days in 2010 and 2011, aimed at obtaining the very first simultaneous assessment of all the different forms (passive and active) of SO 2 release from an open-vent volcano. Using the unprecedented spatial and temporal resolution of the UV camera, we obtained a 0.8 Hz record of the total SO 2 flux from Stromboli over a timeframe of ∼14 h, which ranged between 0.4 and 1.9 kg s −1 around a mean value of 0.7 kg s −1 and we concurrently derived SO 2 masses for more than 130 Strombolian explosions and 50 gas puffs. From this, we show erupted SO 2 masses have a variability of up to one order of mag…
A Computerised System for Electrocochleographic (ECOG) Measurement
1982
To study the influence of vitamin A on hearing we choose to examine ECoGs induced by an audible stimulus.The basis of this project is a suitable experimental equipment for inducing and recording inner ear electrical responses in guinea pigs. The problem to be studied asks for a high number of animals and measurements within one animal; furthermore the ECoGs of each animal have to be examined over a long period of time. This calls for a simple and automated measurement and evaluation procedure. In contrats to most ECoG experiments we do not study the influence of special oto — toxic agents (noise,drugs etc) but examine the variation of ECoG signals as caused by different metabolic states of …
Percutaneous Nephropyelostomy and Endo-Urological Manipulations
1982
After a long period of neglect (Goodwin et al. 1955), percutaneous nephropyelostomy (PNS) has gained general acceptance and replaced operative nephrostomy. In addition, the percutaneous approach has led to a number of new diagnostic and therapeutic procedures. The objective of this review is not to give a complete and detailed survey of PNS but rather to report on our technique and results with fine needle nephrostomy and various endo-urological manipulations.
The history of meniscal-surgery
2000
In comparison with other operative procedures, the history of meniscal-surgery offers some particular differences. Over a long period of time injuries of the semilunar-cartilages of the knee-joint were not generally recognised. In the 18th century only was the clinical picture roughly outlined. There is evidence, that parts of the meniscus were removed much earlier than we have historic proof of. These meniscal fragments were generally mistaken for "loose bodies" in the joints, not knowing the exact etiology. Operative interference with joints was afflicted with a very high incidence of infections and thus complications. Due to this reliable standards of sterility were imperative to obtain …
Efficient interrogation method of forward Brillouin scattering in optical fibers using a narrow bandwidth long-period grating
2020
A new technique, to the best of our knowledge, for the characterization of the effective refractive index modulation in optical fibers due to transverse acoustic mode resonances excited by electrostriction is reported. The resonances excited by an optical pulse are probed by a narrow bandwidth long-period grating (LPG) inscribed in the fiber, which is interrogated by a continuous wave (CW) beam. The LPG used in this experiment has a narrow bandwidth and high sensitivity to small mode index perturbations, allowing the measurement of index variations from below 10 − 9 to 10 − 6 . Radial and torsional-radial acoustic modes were characterized up to 1.1 GHz. The linewidth of resonances was found…
Tooth replacement rates in early chondrichthyans: a qualitative approach
2009
The continuous replacement of teeth throughout their lifetime is a common characteristic of most chondrichthyans. This process was already present in the earliest representatives of the group. It has been well established that different species of extant sharks show rapid tooth replacement rates; however, some authors have suggested that in early chondrichthyans this rate might have been much slower. Here we present a qualitative approach to analyse tooth replacement rates in the Early Devonian shark Leonodus carlsi, the earliest tooth-bearing shark known to date. For this, we have examined 1,103 isolated teeth from Celtiberia, Spain. Our study provides strong evidences of an extremely slow…