Search results for "Cuba"
showing 10 items of 340 documents
Cuba and Italy: a comparative study on the determinants of health in a context of limited resources
2012
Italian and Cuban healthcare systems, although operating in very different context, show some of the best evidence in the world in terms of health outcomes. The Cuban model, unique because of an historical-economic-political asset not repeatable, had oriented its development on education and health promotion through a public health approach. The aim of our study is to perform a comparison of the Italian and Cuban healthcare system through the use of health indicators validated at international level in order to identify best practices. Cuba provides health care to all residents focusing strongly on primary care and health promotion and obtains similar results to Italy despite the limited av…
Tavole di cubatura di popolamento per i soprassuoli forestali della Sicilia.
2009
Obiettivo del lavoro e la messa a punto di tavole di cubatura di popolamento per la stima statistica, in maniera rapida, facilmente applicabile e con adeguata attendibilita, delle masse legnose dei boschi ordinariamente governati a ceduo e a fustaia. Nella presente nota viene illustrata l’analisi statistica condotta per la preparazione dei modelli matematici di predizione del volume della massa legnosa a ettaro, vengono riportati i risultati ottenuti e sono discusse le modalita di applicazione dei modelli elaborati. L’impiego delle tavole di popolamento e indicato soprattutto nelle situazioni in cui sia possibile adottare procedure speditive per la determinazione dell’area basimetrica per u…
The operational sex ratio of the sea urchin Paracentrotus lividus populations: the case of the Mediterranean marine protected area of Ustica Island (…
2009
We investigated, with a series of field and laboratory observations, the possible effect of the starfish Marthasteria glacialis predation on the operational sex ratio (OSR), i.e. the number of sexually mature males divided by the total number of sexually mature adults of both sexes at any one time, of the edible sea urchin Paracentrotus lividus. The OSR was estimated three times during the sea urchin summer spawning period (July 2004, June 2005 and July 2006) on barren substrates of Ustica Island Marine Protected Area (Southern Tyrrhenian Sea, Italy). Four sites were selected: two characterized by high M. glacialis density (take zone C) and two controls with low starfish density (no-take zo…
Calcium efflux from human erythrocyte ghosts
1970
The passive Ca efflux from human red cell ghosts was studied in media of differing ion compositions and compared to the ATP-dependent Ca efflux. Cells were loaded with(45)Ca during reversible hemolysis, and the loss of radioactivity into the non-radioactive incubation medium was measured, usually for 3 hr at 37°C. Analysis of the efflux curves revealed that(45)Ca efflux followed the kinetics of a simple two-compartment system. In the concentration range between 0 and 1MM Ca in the external solution ([Ca(++)] o ), the rate constant of passive Ca efflux (k min(-1), fraction of(45)Ca lost per minute into the medium) increased from 0.00732 to 0.0150 min(-1). There was no further increase at hig…
Running against time: conservation of the remaining hawksbill turtle (Eretmochelys imbricata) nesting population in the Dominican Republic
2012
Saona Island hosts the last hawksbill turtle (Eretmochelys imbricata) nesting population in the Dominican Republic, which has experienced a severe decline in the last decades, mostly due to illegal egg take. Here we present the results of an artificial incubation programme started in 2007 to protect the clutches from human predation. A preliminary survey in 2006 showed that about 60% of clutches laid were taken by humans. Over the study period (2007–2010) we recorded 400 clutches, of which 38.2% were predated by humans, 40.7% were artificially incubated and 21% were incubated in situ. Overall, the artificial incubation programme allowed the release of 12,340 hatchlings. No differences were …
Changes in the motility patterns of spermatozoa from the rabbit epididymis as assessed by computer-aided sperm motion analysis
1996
Sperm maturation in the epididymis includes changes in their potential for motility that enables spermatozoa to reach the egg and penetrate its investments. The motility characteristics of spermatozoa from the testis, the epididymis, and vas deferens of the rabbit were investigated by computer-assisted sperm analysis (CASA). Various forms of motility were displayed by sperm from different regions of the epididymis released into incubation medium. Testicular sperm were motile, although nonprogressive. The maximum percentage motility was expressed by sperm in the proximal cauda epididymidis, and forward progression was developed by spermatozoa from the distal caput. Once forward progression w…
Binding of Cu2+, Zn2+, and Ni(2+)-GnRH complexes with the rat pituitary receptor.
1997
Complex of copper with the gonadotropin-releasing hormone, GnRH, competed more efficiently for the GnRH receptor than native GVRH, while complexes of nickel with GnRH and zinc with GnRH had slightly lower affinity. Copper ion added to the incubation mixture inhibited the buserelin binding to the receptor.
Zeitlicher Ablauf der ACTH-induzierten Stimulierung der Corticosteroidbiosynthese
1969
The time course of ACTH action was studied during incubation of quartered rat adrenals by estimation of corticosterone production and secretion rates. The results suggest a two step action of ACTH during the acute stimulation of corticosteroid biosynthesis: A modest initial stimulation was observed within the first 30 min of exposure to ACTH which was overlapped by a marked secondary stimulation between 30 and 60 min.
The incubation process for the creation of viable firms: the case of ARCA Consortium
2015
The aim of this study is to demonstrate that academic incubators play a key role in firm viability. This study develops a new analytic systemic framework that reveals the processes and factors that determine the effectiveness of the incubation process supported by university incubators. We analyse the effectiveness of the incubation process in the incubator of the ARCA Consortium by means of a single case study with an embedded design. In this study, adopting a systemic perspective, we shift the focus from the firm to the context, shedding light on the systemic actions that create the prerequisite conditions for the achievement of the firms’ viability.
La controversia entre homosexualidad y familia: el caso cubano
2004
El presente artículo constituye un resumen de la tesis Homosexualidad y familia: acoso y simetrías que el autor presentara para obtener el título de máster en Sociología por la Universidad Autónoma de Barcelona y la Universidad de La Habana. En la misma nos propusimos caracterizar algunos aspectos de la relación entre homosexualidad y familia en el contexto cubano. Para ello, nos centramos en describir los aspectos relativos a la «vida gay» en Ciudad de La Habana y en determinar el vínculo establecido entre homosexualidad y familia por un grupo de jóvenes homosexuales varones residentes en esta ciudad. The present article constitutes a summary of the thesis Homosexuality and family: harassm…