José Carlos Sales dos Santos

Um banho termostático de baixo custo (temperatura ambiente até 0ºC)

Thermal baths to decrease ambient temperature are an indispensable tool for most research and teaching laboratories, especially those in tropical or equatorial regions. A simple and inexpensive thermal bath has been developed based on a scratched compressor. It has three possible setups for cooling: sample immersed into the bath, sample flowing through the bath, and cooling liquid flowing in a jacket around the sample. It has been tested for 40 months. The temperature ranges from room temperature to 0 °C, when using water. The repeatability is better than 3% and the precision varies from 0.5% to 2%.

OBSERVATÓRIO DA PRODUÇÃO EM INCLUSÃO DIGITAL: EM FOCO A ABORDAGEM COGNITIVA NO PORTAL DE PERIÓDICO DA CAPES

This work is fruit of the first part of the Studies of the Scientific Production in digital inclusion in Brazil of 2002 the 2006 with approach in the cognitive perspective. For such, it was looked to answer the following problem: which the regions that more publish scientific articles in Digital Inclusion approaching a cognitive perspective in the area of Science of the Information. The focus of the research understands the survey of all the articles published (in it integrates) in digital format, of access on-line (Internet) recouped in the Portal de Periodicos CAPES, having as it cuts the area of Science of the Information. The main objective was to identifier articles of digital inclusion with cognitive boarding and being had as objective specific: to verify the academic bond of the author; it fits it in a region; to quantify the articles that approach the digital inclusion with cognitive perspective; to quantify and qualitify the authors who more produce inside of this perspective and the dominant languages. For in such a way, the infometry method was applied, being this a research of exploring and quantitative character. They can be pointed as resulted: incidences how much to the authorship and used boarding (doctors 66,7%=cognitive); incidences how much to the region (Southeastern 66,7%=cognitive) and incidences how much to the publication (Qualis ‘A’ 16,7%=cognitive).