The use of ultra-violet setting glue for microelectrode fabrication
Abstract The characteristics of glues which set in ultra-violet light are described with respect to their advantages for microelectrode assembly.
Zetidoline blocks dopamine autoreceptors in the rat substantia nigra
Zetidoline, applied microiontophoretically onto neurones in the substantia nigra, zona compacta of anaesthetized rats, reversibly blocked the depressant effect of iontophoretically-applied dopamine. The inhibitory actions of gamma-aminobutyric acid (GABA) and glycine and the excitatory action of glutamate were unaffected by the antagonist. Zetidoline applied by bath perfusion, was similarly an antagonist of the inhibitory effect of bath applications of dopamine on neurones in the zona compacta of slices of substantia nigra; the pA2 for zetidoline in this preparation was 7.0.
REFORMA DO ESTADO E AS POLÍTICAS PARA A EDUCAÇÃO SUPERIOR NO BRASIL NOS ANOS 90
This article aims at discussing the federal policies for higher education implemented in Brazil in the 1990s. It assumes that such policies are based on socio-political choices and interests linked to the changes occurring in the contemporary Brazilian scene, changes that have deep historical roots, which emerge in the process of reformation of the Brazilian State. This situation implies alterations in the field of public policies, and more particularly in that of social policies, since the on-going official proposals and projects are characterized by a decrease of the role of State. The borders between public and private affairs have become increasingly blurred in a process detrimental to the former. The contradictions in the federal policies for higher education are analyzed here, as well as their results as for the following fields: institutional diversification and differentiation; assessment criteria, broadening and privatization of this level of education.