Raios-x: fascinação, medo e ciência

This work presents the discovery and the use of x-rays at the end of the XIXth and the beginning of the XXth century. X-rays greatly impacted science and everyday life. Their existence broke the idea that knowledge had reached a limiting step. In general, people regarded x-rays as a marvel of science, but reactions against their use were also found. Several applications were proposed, especially in medicine. However, little or no attention was paid to security measures, leading to health damages and even death. The development of the radiological protection took into account the accidents with the x-rays.

La Harmoniemusik : música per a conjunt de vents al llarg dels segles XVIII i XIX

La Harmoniemusik: música per a conjunt de vents al llarg dels segles XVIII i XIX és una recerca a través del repertori, gèneres, usos i funcions que tingué el conjunt de vents a la Viena clàssica i la seva influència en la música per a vents del segle XIX. A través de l’explicació del context social i cultural de l’època, entendrem les motivacions i les circumstàncies que van empènyer als compositors a escriure per a Harmoniemusik, així com també les relacions d’aquesta música amb l’òpera, la música militar i la música religiosa.

Ciência como cultura: paradigmas e implicações epistemológicas na educação científica escolar

"Science as culture" is based on the assumption that science is a valuable component of human culture. We therefore have to build the bridge, in cultural terms, from the scientific community to the common citizen. Teaching science as culture requires the co-construction of knowledge and citizenship. Ways of articulating science/technology with society are invoked, pondering on the ethical ambivalence of such connections. The goals of this reflection are to think about: a) epistemological obstacles that, in favouring the logic of monoculture, oppose the implantation of the science as culture; b) epistemological strategies that point towards a diversity of cultural practices and "constellations" of knowledge leading to the reconfiguration of the being through knowledge; c) imperatives that force us to (re)think the epistemological bases suited to the paradigmatic changes and which translate the dynamics and complexity of the evolution of the frameworks that currently sustain science and school scientific education.

Alucinógenos naturais: um voo da Europa Medieval ao Brasil

This work describes the historical importance and the use of hallucinogenic plants by different civilizations. A comparison between three Brazilian plants whose active principle is N,N-dimethyltriptamine (DMT), and three plant species native to Europe whose active principles are tropanic alkaloids was carried out and we observed these plants promoted different types of hallucinations.

Johann Andreas Cramer e o "ensaio químico mineral" no século XVIII

In this research, we seek to corroborate the contributions of Chemistry to the identification, extraction and classification of minerals in the XVIII century, as well as, to approach the discussion that History of Chemistry shouldn't be understood in terms of a tight line of thoughts. For that, we analyze the work of Johann Andreas Cramer (1710-1777), Elements of the Art of Assaying Metals. Cramer proposed a method of mineral assaying based on the chemical behavior of the bodies, which allowed him to identify, extract and classify the minerals with more assertiveness.

Praecipuae caussae raritatis pecuniae in Europa

Invocatio: J.N.D.O.M.

Animadversiones nonnullae in Iliadis Homericae XVIII: 509-541

Arkit: 1 arkintunnukseton lehti, A4 B1.

Artigos da revista Ciência Hoje como recurso didático no ensino de química

This paper presents the results from the selection and analysis of Ciência Hoje articles published from 2004 to 2009 with the aim to discuss some of their features which can assist teachers in chemistry teaching. Therefore, the articles were analyzed according to their content and format based on an analytical tool proposed by Kawamura and colleagues. The results indicate that this magazine offers a reasonable collection of articles related to chemistry with a variety of contents and approaches.

Ações de divulgação de química na Casa da Descoberta - centro de divulgação de ciência da Universidade Federal Fluminense

This paper describes the main activities regarding scientific dissemination in the field of Chemistry at Casa da Descoberta (CD) - a Scientific Dissemination Center of the Fluminense Federal University. It presents a brief history of CD and discusses the difficulties concerning the dissemination of Chemistry at Scientific Dissemination Centers. This work also approaches some activities developed throughout the years: experiments performed in relation to the visitors' daily life, training of monitors to act as mediators in the non-formal teaching of Chemistry, production of dissemination materials, elaboration of books, as well as activities that relate formal to non-formal education.

Investigando a presença da história da ciência em livros didáticos de Química Geral para o ensino superior

This paper aims at analyzing the history of science content of three general chemistry textbooks used in Brazilian universities: the translations of Kotz and Treichel's Chemistry & Chemical Reactivity, Atkins and Jones's Chemical Principles, and Garritz and Chamizo's Química. Results revealed different trends for the inclusion of history of science in chemistry teaching. Kotz & Treichel and Atkins & Jones used history mainly as curiosity and ornament. Garritz & Chamizo adopted the historical approach as one of the organizing axis of their textbook. Nevertheless, the historical content of the three textbooks may be criticized from current historiographical standpoint.