Search results for "cuba"

Bacterias halófilas moderadas aisladas de las minas salinas de Atacocha - Ayacucho

2007

Las bacterias halófilas producen una gran variedad de metabolitos y enzimas con interesantes aplicaciones bíotecnológicas. Con la finalidad de aislar bacterias halófilas moderadas de las minas salinas de Atacocha - Ayacucho, se recolectaron muestras de sal y se preenriquecieron en medio agua de sales al 5% suplementado con extracto de levadura al 0.5% durante una semana y luego se sembraron en medio sólido. De 40 aislados se seleccionaron 10 por presentar características morfológicas y culturales muy diferenciadas. A los aislados seleccionados se les determinó el rango de tolerancia al NaCl, temperatura, pH y sus características bioquímicas y nutricionales. Se encontró que los aislados tole…

Growth and Antagonism of <i>Trichoderma</i> spp. and Conifer Pathogen <i>Heterobasidion annosum</i&a…

2012

Variations in the radial growth rate of 24 isolates belonging to ten species of Trichoderma, three isolates of conifer pathogen Heterobasidion annosum s.s. and four isolates of H. parviporum were evaluated by incubation on a solid malt extract medium at a temperature of 4℃, 15℃ and 21℃. Trichoderma antagonism against Heterobasidion was investigated in dual culture in vitro. The slowest rate of growth was referable to all seven strains of Heterobasidion spp. All Heterobasidion spp. strains were overgrown by 63% of Trichoderma spp. strains after two weeks at 21℃ and by 33% of strains at 15℃. 21% of Trichoderma strains did not grow and only four strains belonging to T. koningii, T. viride and …

Degradation study of enniatins by liquid chromatography–triple quadrupole linear ion trap mass spectrometry

2012

Abstract Enniatins A, A1, B and B1 (ENs) are mycotoxins produced by Fusarium spp. and are normal contaminants of cereals and derivate products. In this study, the stability of ENs was evaluated during food processing by simulation of pasta cooking. Thermal treatments at different incubation times (5, 10 and 15 min) and different pH (4, 7 and 10) were applied in an aqueous system and pasta resembling system (PRS). The concentrations of the targeted mycotoxins were determined using liquid chromatography coupled to tandem mass spectrometry. High percentages of ENs reduction (81–100%) were evidenced in the PRS after the treatments at 5, 10 and 15 min of incubation. In contrast to the PRS, an im…

The effect of methionine and folic acid administered in ovo on the hematological parameters of chickens (Gallus gallus domesticus)

2020

Abstract Methionine (Met), an essential amino acid in poultry diets, when overdosed may cause hyperhomocysteinemia, which is mainly a trigger for cardiovascular diseases in humans. Homocysteine is neutralized (remethylated) in the presence of folic acid (FA), which also plays an important role in hematopoiesis and participates in the synthesis of DNA, and its deficiencies may result in the development of neural tube defects. One of the basic tools in studying the impact of both xenobiotics and nutrients on the animal organism is hematological analysis. Thus, the aim of this study was to determine the effect of in ovo supplementation with Met and FA on the hematological parameters of broiler…

Ecos ovidianos en una adaptación de Eurípides: Hécuba triste de Pérez de Oliva

2014

Hécuba triste de Pérez de Oliva, considerada una de las primeras traducciones a lengua vernácula de una tragedia griega, es una adaptación peculiar de la Hécuba de Eurípides que incorpora notables cambios, algunos de ellos por influencia de otras tragedias griegas. En este trabajo estudiamos varios motivos utilizados por Oliva que remiten a otros textos, entre los que destacan obras relacionadas directa o indirectamente con Ovidio.

Havel, Vargas Llosa y los fundamentalismos

2006

Binding to complement factors and activation of the alternative pathway by Acanthamoeba.

2010

Acanthamoeba can cause severe ocular and cerebral diseases in healthy and immunocompromised individuals, respectively. Activation of complement appears to play an important role in host defence against infection. The exact mechanism, however, is still unclear. The aim of the present study was to investigate the effect of normal human serum (NHS) and normal mouse serum (NMS) on Acanthamoeba trophozoites, the binding of different complement factors to Acanthamoeba and the activation of the complement system. Moreover, we aimed to work out any possible differences between different strains of Acanthamoeba. A virulent T4 strain, a non-virulent T4 strain and a virulent T6 strain were included in…

Educare all'imprenditorialità: Esperienze di incubazione d'impresa nell'Università di Palermo

2011

Il contributo prende spunto dalle iniziative recentemente avviate nell'Università degli studi di Palermo in tema di valorizzazione della ricerca scientifica. In particolare il tema qui affrontato riferisce delle esperienze di avvio di start up innovative ad opera di laureati e ricercatori che si sono avvalsi del supporto dell'incubatore d'impresa gestito dal Consorzio ARCA. A partire dai risultati ottenuti in questi anni vengono esposte le finalità di iniziative di educazione all'imprenditorialità promosse dall'Ateneo di Palermo

The Incubation Process for the Creation of Viable Firms: The Case of ARCA Consortium

2013

Purpose of the study. The process of creation of new firms is particularly complex when it starts from very innovative ideas that may be not understood by the stakeholders of the firm. The aim of this study is to demonstrate that academic incubators play a key role for firms’ viability. Methodology. We analyze the effectiveness of the incubation process that takes place in the incubator of Consorzio Arca, by means of a single case study with embedded design. Findings. The effectiveness of the incubation process is demonstrated by the high number of spin-offs that, after incubation, are able to stand alone in the market and to find the consonance with the relevant supra-systems. Research lim…

Production of cyclopiazonic acid by molds isolated from Taleggio cheese

1999

Twenty-seven strains of Penicillium were isolated from the rind of Taleggio, a typical Italian cheese, so that we could test their capacity to produce cyclopiazonic acid (CPA); all strains produced CPA. The production was strongly influenced by the strain variety and growth conditions. Strains incubated at 25 degrees C for 7 days always produced CPA in mannitol broth, with concentrations ranging from 0.02 to 1 microg/ml, whereas only 33% of strains grown in yeast-extract broth produced CPA, with a maximum value of 0.1 microg/ml. In milk, maximum production (1.6 microg/ml) was observed after 14 days of incubation at 25 degrees C. In order to evaluate the presence of the toxin and its capacit…