Il settore delle materie prime non energetiche in Italia. Strategie competitive in atto e prospettive di sviluppo

Negli ultimi anni, il tema della sostenibilità ha assunto un’importanza cruciale specie per i Paesi industrializzati, ad alto consumo energetico e di materie prime. Se da un lato la sostenibilità integra responsabilità ambientali, economiche e sociali da parte delle singole imprese, dall’altro lato essa chiama in causa anche governi e autorità locali nel favorire le condizioni per la promozione di modelli di produzione e consumo virtuosi e rispettosi delle generazioni future. L’opera permette ad un pubblico variegato fatto di studenti, professionisti e pubbliche amministrazioni, di conoscere da vicino un settore particolare del comparto minerario, comprendendone le dimensioni competitive e le analizzando le decisioni di una categoria importante di imprese che contribuisce allo sviluppo economico del nostro Paese

Traumi vascolari periferici: trattamento delle lesioni scheletriche associate.

In corso di lesioni complesse traumatiche degli arti la lesione vascolare arteriosa ha per prima l'indicazione alla riparazione chirurgica, ma essa pu\uf2 condizionare il trattamento dlla eventuale frattura associata. Infatti la stabilizzazione del segmento osseo fratturato pu\uf2 essere necessaria come primo momento chirurgico al fine di consentire la rivascolarizzazione arteriosa su un arto stabile; a volte invece la sutura vascolare in accorciamento del vaso pu\uf2 condizinare una osteosintesi dell'osso fratturato in accorciamento al fine di non esercitare trazioni sul vaso ricostruito. Viene analizzata l'esperienza pluriennale degli autori in questo particolare tipo di traumi

Improving E-Retailers Performance via Social CRM Capabilities

The widespread usage of social media has deeply transformed the mechanisms that e-retailers adopt to acquire customers’ information, interact and build relationships with them. In order to be successful in this new context, e-retailers need to integrate their customer relationship management (CRM) system with social media applications in order to develop new marketing capabilities, namely social CRM capabilities that are useful to achieve a superior competitive advantage. Hence, the aim of the study is to analyze the role and the impact of social CRM capabilities on customer relationship performance and financial performance, as outcomes. Data retrieved from 102 European e-retailers that actively use Facebook to engage customers have been processed with structural equation modelling technique. Findings contribute to marketing literature highlighting a strong relationship between social CRM capabilities and customer relationship performance and suggesting that only when those capabilities improve customer relationship performance, firms can significantly increase also financial performance

Higher Efficiency in Organic than in Conventional Management of Biological Control in Horticultural Crops in North-Eastern Italy

This research analyzes the efficiency of natural pest control in horticultural crops (Red chicory and White cabbage) within different regimes (organic and conventional). Agroecosystem food-web structure was examined in conventional and organic fields, in north-eastern Italy, considering phytophagous, parasitoid and hyperparasitoid guilds. Natural control agents were analysed, especially parasitoids of Plutella xylostella (L.) (Lepidoptera: Plutellidae), one of the most problematic pests on cabbage crops. Phytophagous communities were more diverse and more predators and parasitoids were present in organic than in conventional farms. The parasitization of P. xylostella was significantly higher and the food-web structure was also more complex in organic than in conventional fields. Even with lower spray inputs, organic fields often supported a less abundant phytophagous community than conventional fields, even though the crop damage was similar in both management systems. The present data seem to indicate that the higher presence of biological control agents (predators and parasitoids) in organic fields is effective in moderating crop pest populations

New species and records of the family Scleropactidae Verhoeff, 1938 from Venezuela (Crustacea, Isopoda, Oniscidea)

Eight species in the family Scleropactidae are recorded from Venezuela. Three species are described as new: Colomboscia venezuelana n. sp. from the departments of Aragua and Miranda, Globopactes cristalinae n. sp. from the department of Trujillo, and Globopactes mucuyensis n. sp. from the department of Merida. Globopactes senex and Neosanfilippia venezuelana have their distribution extended to the departments of Aragua and Carabobo, respectively