Search results for "juvenil"

Time-dependent effects of polystyrene nanoparticles in brine shrimp Artemia franciscana at physiological, biochemical and molecular levels

2019

Micro- (<5 mm) and nanoplastics (<1 μm) are emerging threats for marine ecosystems worldwide. Brine shrimp Artemia is recognized as a suitable model among planktonic species for studying the impact of polystyrene nanoparticles (PS NPs) through short and long-term bioassays. Our study aims to evaluate the time-dependent effects of cationic amino-modified PS-NH (50 nm) in A. franciscana after short- (48 h) and long-term exposure (14 days). For this purpose, nauplii were exposed to a concentration range of PS-NH (0.1, 1, 3 and 10 μg/mL) in natural sea water (NSW), and physiological, biochemical and molecular responses were investigated. Short-term exposure to PS-NH caused a decrease in nauplii…

Energy reserves mobilization in the yellow eel as herbicide exposure effect.

2015

Abstract Thiobencarb and propanil are two of the most extensive used herbicides worldwide in rice cultivation. Especially scanty is the available information regarding the effect of herbicides on fish energy resources. In the present study, the effect of sublethal exposure to these herbicides on the energy reserves of juvenile eel Anguilla anguilla was compared. Eels were exposed to 72 h to the herbicide thiobencarb (0.22 mg L −1 ) or Propanil (0.63 mg L −1 ), and allowed to recover in clean water (144 h). Caloric content was determined in liver and skeletal muscle. Fish exposed to thiobencarb rapidly mobilized energy. Reserves from liver were depleted (21%) compared to control values (2.50…

La consolidación del movimiento estudiantil (1920-1947)

1999

Desde 1920 a la postguerra, el movimiento estudiantil logró fuerte presencia en la universidad valenciana, y luego en la clandestinidad y el exilio. Se inician las tres asociaciones que dominan el período: Federación Regional de Estudiantes Católicos, la Federación Universitaria Escolar que continúa en el exilio en Francia y México, y la Asociación Valencianista Escolar. La primera y última desaparecen con la guerra civil.

Prácticas culturales de la juventud

1985

Jeunesse et Culture

1985

Falange, Frente de Juventudes y el nuevo orden europeo : discrepancias y coincidencias en la política de juventud durante el primer franquismo = Fala…

2012

La política juvenil que el franquismo puso en pie estuvo siempre bajo responsabilidad de los falangistas, desde el momento mismo de su constitución en 1937 hasta el desmantelamiento de la Secretaría General del Movimiento en 1977. En este artículo se estudia en qué modelos se inspiraron los falangistas para ponerla en marcha, ya que se parte de la constatación bien fundada de que la Falange carecía de experiencia en ese ámbito concreto. Para ello, se analizan los intercambios y las vinculaciones que la Falange estableció con países y partidos amigos, especialmente con el nacionalsocialismo alemán y con su organización juvenil: la Hitler Jugend. La localización y el estudio de documentos per…

Effect of tank size on food intake and growth in individually held juvenile rainbow trout Oncorhynchus mykiss (Walbaum)

2006

Looking for skin and gill parasites as biological tags for Atlantic bluefin tuna (Thunnus thynnus)

2008

Skin and gill parasites found in juvenile Atlantic bluefin tuna (Thunnus thynnus) caught in the Bay of Biscay, northeast Atlantic, were examined with the aim of finding biological tags. The degree of infection of different microhabitats was analyzed and the annual prevalence by species of parasite obtained. Of the specimens examined, 98% had parasites, and the gills were by far the most infected microhabitat, followed by the skin and the pectoral fin. Within the gill cavity, parasites were most commonly found in the afferent margins of the primary lamellae. Three species of Copepoda were identified, two species of Monogenea, and eleven Digenea. Thus, ten species (Digenea: Didymozoidae) and …

Effects of repeated handling, with or without anaesthesia, on feed intake and growth in juvenile rainbow trout, Oncorhynchus mykiss (Walbaum)

2006

The effects of weekly anaesthetization with clove oil and tricaine methanesulphonate (MS-222) on feed intake and growth were examined in juvenile rainbow trout, Oncorhynchus mykiss (Walbaum), held individually. Repeated handling without anaesthetics significantly reduced feed intake and weight gain compared with an unhandled control group during an 8-week experiment. When anaesthetics were used during handling the feed consumption and weight gain were significantly (MS-222) or not significantly (clove oil) higher than in fish handled without anaesthesia. When compared with the unhandled control group, neither of these two anaesthetics had significant effects on feed intake but, in contrast …

Sexual Abuse-Current Medico-legal, Forensic and Psychiatric Aspects

2013

Abstract Violence against women and minors is a worldwide problem that has not yet been sufficiently acknowledged. There are many obstacles especially when sexual abuses have to be evaluated. These problems are present both when victims of sexual abuse are evaluated and when sex offenders are dealt with, especially when the offenders are juvenile sex offenders (JSO). These issues give cause for great concern about prognosis, and the resulting psychosocial implications, and call for a special effort from the scientific community in identifying appropriate prevention and treatment methods. This chapter is divided into two parts. The first part deals with the forensic and psychiatric features,…