Search results for "conservation."
showing 10 items of 1994 documents
Rice cooking and sensory quality
2019
International audience; This chapter provides a state-of-the-art review of the diversity and dynamics of consumer demand with respect to the eating quality of rice worldwide. Quality includes both tangible measurable factors (rice characteristics) and the context of consumption. The main sensory attributes evaluated around the world are described, and their relationship with the diversity of consumer demand is discussed. Instrumental methods for predicting quality measured on either raw or cooked grains are reviewed. The changes that occur in the rice grain during cooking are described along with a modeling approach able to predict the changes and their spatial distribution in the rice grai…
Maternal effects in vulnerability to eye-parasites and correlations between behavior and parasitism in juvenile Arctic charr
2017
Hatchery-reared fish show high mortalities after release to the wild environment. Explanations for this include potentially predetermined genetics, behavioral, and physiological acclimation to fish farm environments, and increased vulnerability to predation and parasitism in the wild. We studied vulnerability to Diplostomum spp. parasites (load of eye flukes in the lenses), immune defense (relative spleen size) and antipredator behaviors (approaches toward predator odor, freezing, and swimming activity) in hatchery-reared juvenile Arctic charr (Salvelinus alpinus) using a nested mating design. Fish were exposed to eye-fluke larvae via the incoming water at the hatchery. Fish size was positi…
Rapid evolutionary adaptation to elevated salt concentrations in pathogenic freshwater bacteria Serratia marcescens.
2014
Rapid evolutionary adaptions to new and previously detrimental environmental conditions can increase the risk of invasion by novel pathogens. We tested this hypothesis with a 133-day-long evolutionary experiment studying the evolution of the pathogenic Serratia marcescens bacterium at salinity niche boundary and in fluctuating conditions. We found that S. marcescens evolved at harsh (80 g/L) and extreme (100 g/L) salt conditions had clearly improved salt tolerance than those evolved in the other three treatments (ancestral conditions, nonsaline conditions, and fluctuating salt conditions). Evolutionary theories suggest that fastest evolutionary changes could be observed in intermediate sele…
Evidence of the Zanclean megaflood in the eastern Mediterranean Basin
2018
A. Micallef et. al.
Kali dodecanesicum (Chenopodiaceae, Salsoloideae) a new species from Greece
2015
Kali dodecanesicum, a new species from some islands (i.e. Rhodes, Kos and Nisyros) of the Dodecanese in the south-eastern Aegean (Greece), is described and illustrated. According to recent literature, Kali is treated as a distinct genus from the polyphyletic Salsola s.l., which includes several annual species. The new species is morphologically well separated from the other Kali taxa mainly for the shape of the fruiting perianth, showing closer relationships with Kali ponticum. Its ecological requirements, distribution, and conservation status are also examined, together with an analytic key of the Kali species occurring in the Mediterranean area.
A new species of Kali (Salsoloideae, Chenopodiaceae) from Sicily, supported by molecular analysis
2015
Nomenclatural and taxonomical considerations on Kali , a controversial genus recently segregated from the polyphyletic Salsola s. lat. ( Chenopodiaceae ), are provided. The Kali group includes annual plants with leaves ending in a spine and lacking hypodermis, having also a cortex alternate to longitudinal chlorenchymatous striae. The species belonging to this genus mainly have a paleotemperate distribution (Europe, Asia and North Africa), occurring as aliens in North America, Australia and South Africa. A new species collected on Mt. Etna (Sicily), and closely related to K. australe , is described and illustrated as K. basalticum Its morphological and molecular features, karyology (2n=54),…
Salvatore Boscarino : la didattica e il dibattito sul restauro dei monumenti in Italia (1975-2000)
2018
Il volume Salvatore Boscarino La didattica e il dibattito sul Restauro dei Monumenti in Italia 1975-2000 vuole sintetizzare il proficuo dibattito intercorso fra i docenti di Restauro dei Monumenti in Italia, nel periodo compreso fra il 1975 e la fine del Ventesimo secolo, e sottolineare l’impegno, anche nella didattica, di uno dei suoi protagonisti: Salvatore Boscarino (1925-2001). La ricerca, temporalmente inscritta tra l’anno 1975 (anno della vincita del concorso per professore ordinario di Restauro dei monumenti di Boscarino) e il 1998 (anno in cui Boscarino seguì la sua ultima tesi di laurea a Palermo), quale concatenazione di più temi, riferisce sul dibattito fra gli stessi docenti di …
Preservation of the remains and contemporary grafts in the former Mother Church of Santa Margherita di Belice in Sicily: ethics of restoration, conse…
2015
Un restauro di qualità deve rispettare il carattere dell’architettura storica e le stratificazioni, rendere distinguibili le parti aggiunte e suggerire l’uso compatibile. Questo moderno indirizzo culturale e metodologico ha guidato l’intervento sui resti della ex chiesa madre di Santa Margherita di Belice, in Sicilia, ora destinata ad ospitare il “Museo della Memoria”. La ricostruzione filologica delle parti crollate nel 1968 è stata scartata, indirizzando il cantiere verso la rigorosa conservazione dell’autentico frammento architettonico e la ridefinizione del volume perduto mediante un nuovo involucro contemporaneo. Una campagna d’indagini diagnostiche (condotte dal Lirba, Università di P…
The restoration of Santa Maria delle Grazie Church in Santa Margherita di Belice (Sicily): conservation of the of the architectural remains and criti…
2015
Nelle zone terremotate della Valle del Belice in Sicilia, molte demolizioni e ripristini stilistici sono stati effettuati, ma – tra i pochi interventi condotti secondo i canoni condivisi della disciplina del restauro – deve essere ricordato lo pseudo-completamento della chiesa di Santa Maria delle Grazie a Santa Margherita di Belice. L’intervento ha tradotto nella prassi esecutiva del cantiere un gesto progettuale fondato sulla conservazione dell’irriproducibile sostanza materica superstite e la raffinata e sensibile ridefinizione dell’involucro. Una teca di legno, vetro e metallo ha riformato il volume della chiesa accostandosi alla porzione absidale e alla parete ancora presenti. La scans…
Seed germination in Sarcopoterium spinosum (L.) Spach from South-Eastern Sicily
2012
Sarcopoterium spinosum (L.) Spach is a nanophanerophyte whose presence in Sicily is limited to the South-East of the island. A study on seed germination behaviour of seeds collected from some populations indicates low viability of seedlings which could seriously put the long-term survival of these populations at risk.