Search results for "InSe"
showing 10 items of 3069 documents
Verso un'educazione interculturale
2016
Il tema dell'inclusione scolastica degli alunni di nazionalità non italiana è oggi particolarmente avvertito dall'opinione pubblica italiana in seguito alla consistenza del fenomeno immigratorio. I figli dei lavoratori immigrati non devono essere né assimilati né emarginati, bensì aiutati a formarsi una propria identità culturale. Sono forniti alcuni orientamenti pedagogici per gli insegnanti affinché favoriscano l'inclusione dei bambini stranieri e lo sviluppo di un'autentica mentalità interculturale in tutti gli alunni. A tal fine sono proposte delle competenze interculturali che gli insegnanti dovrebbero acquisire per far sì che tutti gli alunni interiorizzino i valori fondamentali per l…
Esperienze di didattica personalizzata
2019
Con l’educazione personalizzata si cerca di aiutare ogni studente a valorizzare ciò in cui è differente rispetto agli altri, le proprie possibilità e i propri limiti; a conoscersi e a coltivare la propria originalità. Obiettivo che risulta perseguibile lavorando sul fronte della formazione degli insegnanti – perfezionandone le conoscenze disciplinari e interdisciplinari e la metodologia d’insegnamento delle discipline in tutti i gradi della scuola – e sull’orientamento degli alunni e delle alunne attraverso la progettazione e l’implementazione di percorsi di apprendimento ad hoc. With personalized education we try to help each student to value what it is different from others, its possibili…
Los retos del sistema educativo en España
2011
International audience; A lo largo de las últimas décadas, el sistema educativo español ha cambiado profundamente. Sin embargo, a pesar de los esfuerzos realizados y de las múltiples reformas emprendidas, la eficacia interna y externa del sector sigue siendo pequeña en comparación con otros países de nuestro entorno. Gran parte de los problemas que padece el sector se debe a su escasa diversidad y a su ausencia de diferenciación. A nuestro juicio, organizar el sistema de enseñanza de manera que cada alumno encuentre un lugar en la esfera educativa que le permita adquirir unas cualificaciones a la medida de sus posibilidades y negociables en el mercado de trabajo es el mayor reto al que se e…
Unshared binding sites for Bacillus thuringiensis Cry3Aa and Cry3Ca proteins in the weevil Cylas puncticollis (Brentidae)
2016
Bacillus thuringiensis Cry3Aa and Cry3Ca proteins have been reported to be toxic against the African sweetpotato pest Cylas puncticollis. In the present work, the binding sites of these proteins in C. puncticollis brush border vesicles suggest the occurrence of different binding sites, but only one of them is shared. Our results suggest that pest resistance mediated by alteration of the shared Cry-receptor binding site might not render both Cry proteins ineffective.
Involvement of circadian oscillation(s) in the photoperiodic time measurement and the induction of reproductive diapause in a northern Drosophila spe…
2013
An ability to predict forthcoming changes in environmental conditions and get prepared for them in advance is crucial for the survival and reproduction of organisms living in a seasonally changing environment. We have studied the possible involvement of circadian oscillator(s) in the photoperiodic timer controlling seasonal responses by tracing Drosophila montana females' diapause induction in constant darkness and in a classical Nanda-Hamner experiment. Nearly all females developed ovaries in continuous darkness, which shows the direct development to be their default developmental pathway in the absence of photoperiods. In Nanda-Hamner experiment the females' diapause incidence was close t…
Mapping and quantification of cryptochrome expression in the brain of the pea aphid Acyrthosiphon pisum.
2021
Aphids are paradigmatic photoperiodic animals often used to study the role of the circadian clock in the seasonal response. Previously, we described some elements of the circadian clock core (genes period and timeless) and output (melatonin, AANATs and PTTH) that could have a role in the regulation of the aphid seasonal response. More recently we identified two opsins (C-ops and SWO4) as candidate input photoperiodic receptors. In the present report, we focus on the study of cryptochromes (cry) as photoreceptors of the circadian clock and discuss their involvement in the seasonal response. We analyze the expression of cry1 and cry2 genes in a circadian and seasonal context, and map their ex…
Role of Antioxidants in Cooled Liquid Storage of Mammal Spermatozoa
2021
Cooled preservation of semen is usually associated with artificial insemination and genetic improvement programs in livestock species. Several studies have reported an increase in reactive oxidative species and a decrease in antioxidant substances and sperm quality parameters during long-term semen storage at refrigerated temperatures. The supplementation of antioxidants in extenders before refrigeration could reduce this detrimental effect. Various antioxidants have been tested, both enzymatic, such as superoxide dismutase and catalase, and non-enzymatic, such as reduced glutathione, vitamins E and C and melatonin. However, the problem of oxidative stress in semen storage has not been full…
Nanda-Hamner Curves Show Huge Latitudinal Variation but No Circadian Components in Drosophila Montana Photoperiodism
2021
Insect species with a wide distribution offer a great opportunity to trace latitudinal variation in the photoperiodic regulation of traits important in reproduction and stress tolerances. We measured this variation in the photoperiodic time-measuring system underlying reproductive diapause in Drosophila montana, using a Nanda-Hamner (NH) protocol. None of the study strains showed diel rhythmicity in female diapause proportions under a constant day length (12 h) and varying night lengths in photoperiods ranging from 16 to 84 h at 16°C. In the northernmost strains (above 55°N), nearly all females entered diapause under all photoperiods and about half of them even in continuous darkness, while…
Targeting the vascular endothelial growth factor system to prevent ovarian hyperstimulation syndrome
2008
BACKGROUND: Ovarian hyperstimulation syndrome (OHSS) typically occurs when ovaries are primed with FSH/ LH and subsequently exposed to hCG. The ultimate pathophysiological step underlying this clinical picture is increased vascular permeability (VP). METHODS: A search of the literature was carried out using PubMed and the authors’ files. RESULTS: In rodents and humans, the expression of vascular endothelial growth factor (VEGF) and VEGF receptor 2 (VEGFR-2) mRNA increases during ovarian stimulation. With the administration of hCG, the expression of each rises to a maximum. Expression of VEGF/VEGFR-2 mRNAs correlates with enhanced VP, with both peaking 48 h following an injection of hCG. Imm…
Locust neuropeptides stimulating sex pheromone production in female European corn borer moth, Ostrinia nubilalis
1990
Abstract The presence of a pheromonotropically active hormone (PBAN-like substance) from locust organs, ( Locusta migratoria ) has been demonstrated. Extracts of brain, corpora cardiaca, corpora allata, suboesophageal ganglia and thoracic ganglia of L. migratoria caused highly pheromonotropic responses in decapitated females of the European corn borer moth ( Ostrinia nubilalis ). The highest activity per unit weight of tissue was found in the corpora cardiaca and corpora allata of the locust followed by the brain plus suboesophageal ganglion of O. nubilalis . Following 8 days of disconnection, separating the corpora allata from the corpora cardiaca and suboesophageal ganglion, the pheromono…