Exomorfología y anatomía de órganos vegetativos aéreos en especies de Flourensia DC. (Asteraceae) con importancia fitoquímica

El género Flourensia DC. es americano y comprende 32 especies. Son arbustos resinosos utilizados en medicina popular; poseen un potencial valor económico, por lo que, en algunas especies representantes, se han caracterizado sus compuestos químicos y determinado algunos posibles usos. En el presente trabajo, se estudió la exomorfología y anatomía de órganos vegetativos de F. hirta S. F. Blake, F. leptopoda S. F. Blake, F. niederleinii S. F. Blake y F. tortuosa Griseb., especies endémicas del centro de Argentina. Se observó que todas son similares en cuanto a la anatomía de hoja y tallo. En cuanto al estudio de la epidermis foliar, se concluye que es posible diferenciar las especies teniendo en cuenta la frecuencia estomática y la presencia de tricomas. Finalmente, las diferencias más notables se encontraron en la exomorfología foliar ya que se observó una gran variación en cuanto a la forma de las hojas y tamaño de las láminas y pecíolos. Con respecto a las estructuras secretoras, se encontraron tricomas y conductos secretores esquizógenos en las hojas y los tallos de todas las especies, las cuales serían responsables de la producción y secreción de las resinas.The genus Flourensia DC. is American and comprises 32 species. They are resiniferous shrubs used in folk medicine. As they have potential economic value, its chemical compounds have been characterized and some possible uses identified. In this work, the exomorphology and anatomy of vegetative organs of F. hirta S. F. Blake, F. leptopoda S. F. Blake, F. niederleinii S. F. Blake and F. tortuosa Griseb., endemic species from central Argentina, have been studied. All species are similar in leaf and stem anatomy. Regarding the epidermis, it is possible to differentiate the species according to the stomatal frequency and the presence of trichomes. Finally, the most remarkable differences were found in leaf exomorphology, since there was a large variation in shape and size of blades and petioles. Concerning the secretory structures, trichomes and secretory ducts were found in the leaves and stems of all species, which would be responsible for the production and secretion of the resins

Le commerce atlantique franco-espagnol

Les études réunies ici améliorent considérablement notre connaissance des circuits économiques reliant les villes portuaires et les places commerciales françaises et espagnoles, en privilégiant l’analyse des démarches des acteurs sociaux dans la création des réseaux d’affaires. Elle soulignent l’importance de trois faits historiques majeurs : l’importance de la fourniture en métaux précieux avec un différentiel de valeur agissant comme un soutien durable du commerce, la multipolarisation croissante de ces échanges et l’interdépendance entre les performances économiques et les conflits politiques et militaires

Information asymmetries in banking and financial contracts: possible solutions from legal design.

In banking the strength of the Credit Institution is manifested in relation to the customer, who therefore assumes the role of a weak contractor, deserving of particular protection. Awareness of the characteristics of the products offered by banks, the comparison between the different services offered on the market and the opportunity to make an informed choice are all consequences linked to the information that is made available. Such information is above all unclear, so much so as to make it difficult to effectively evaluate the convenience of the operations and services offered. Specific rules are envisaged that intervene in the various phases in which the bank-customer relationship is divided. But it almost always happens that the documentation prepared by intermediaries is difficult to read and understand due to their technicality or to the use of a language that is not always easily understood. Everything described falls within the general discipline of banking and financial contracts which is today extremely complex, requires a particular study analysis of the various sectors governed by practices and regulatory interventions that are not always clear to customers and which should, instead, be made accessible through new solutions proposed by the world of legal design