Effect of poling state and morphology of piezoelectric poly(vinylidene fluoride) membranes for skeletal muscle tissue engineering

This work reports on the influence of polarization and morphology of electroactive poly(vinylidene fluoride), PVDF, on the biological response of myoblast cells. Non-poled, ‘‘poled +’’ and “poled-“ -PVDF were prepared in the form of films. Further, random and aligned electrospun -PVDF fiber mats were also prepared. It is demonstrated that negatively charged surfaces improve cell adhesion and proliferation and that the directional growth of the myoblast cells can be achieved by the cell culture on oriented fibers. Therefore, the potential application of electroative materials for muscle regeneration is demonstrated.

An interactive state monad example

A common problem among information systems is the storage and maintenance of permanent information identified by a key. Such systems are typically known as data base engines or simply as data bases. Today the systems information market is full of solutions that provide mass storage capacities implemented in different operating system and with great amounts of extra functionalities. In this paper we will focus on the formal high level specification of data base systems in the Haskell language. We begin by introducing a high level view of a data base system with a specification of the most common operations in a functional point of view. We then augment this specification by lifting to the state monad which is then modified once again to permit input/output operations between the computations

O papel das IPSS's - o exemplo da justiça social prática da Obra de Nossa Senhora das Candeias

As IPSS’s visam dar uma estrutura organizada ao dever ético de solidariedade e justiça – valores incalculáveis – entre os indivíduos. Não são administradas pelo Estado, nem por corpos autárquicos. E têm por objectivo, como informa a Segurança Social também, o apoio a crianças e jovens, o apoio à família, a protecção dos cidadãos na velhice e invalidez e nas situações de diminuição de meios de subsistência ou de capacidade para o trabalho, promoção e proteção da saúde designadamente por meio da prestação de cuidados de medicina preventiva, curativa e de reabilitação, educação e formação profissional dos cidadãos, resolução dos problemas habitacionais das populações.; Abstract: The IPSS's aim to give an organized structure to the ethical duty of solidarity and justice - incalculable values - between individuals. Are not run by the state or by municipal bodies. And aim, as reported by the Social Security also, support for children and youth, family support, the protection of citizens in old age, disability and decrease in situations of subsistence or capacity for work, promotion and health protection including through the provision of care preventive medicine, curative and rehabilitation, education and vocational training of citizens, solving the housing problems of the people.