Made available in DSpace on 2014-10-09T12:33:36Z (GMT). No. of bitstreams: 0 / Made available in DSpace on 2014-10-09T14:04:02Z (GMT). No. of bitstreams: 0 / Os resíduos sólidos galvânicos despertam especial atenção, devido à sua composição tóxica. Tais resíduos geralmente são estocados nas empresas de galvanoplastia, criando um preocupante passivo ambiental, em particular, nas áreas densamente povoadas, como a zona leste da cidade de São Paulo, que, por sua vez, possui um pólo de empresas de galvanoplastia do setor de cromação. Face ao pressuposto, na primeira parte do trabalho, um estudo foi realizado com a compilação dos dados de empresas galvânicas situadas na zona leste de São Paulo, abordando aspectos socioeconômicos e de processo, que influenciam na geração e na destinação dos resíduos sólidos industriais. Na segunda parte do trabalho, amostras selecionadas de resíduos sólidos foram avaliadas quanto às suas características químicas e físico-químicas e foi apresentada a viabilidade do uso tecnológico visando o aproveitamento destes resíduos. Os principais resultados obtidos mostraram que nas dezessete empresas visitadas são geradas 106 toneladas de resíduos sólidos por ano e estes são armazenados em condições precárias, podendo afetar a população vizinha em caso de acidentes ambientais. Os resíduos constituídos majoritariamente por Ni, Cr, B, Cu, Ca, S, C, Na, Fe e Zn, quando aquecidos até 1400°C, apresentaram formações de compostos identificados como Ca2Cr2O5, BaCrO4, NiCr2O4, CuCrO2, CaSO4, Ni2SiO4, NiO e CuO. Estes compostos são difíceis de serem obtidos e, por si só, apresentam potencial para comercialização como matérias-primas para a produção de produtos cerâmicos. Os resíduos sólidos galvânicos foram incorporados em matrizes vítreas, indicando uma alternativa satisfatória e de baixo custo para a inertização dos constituintes nocivos à saúde. Os vidros obtidos apresentaram aspectos coloridos, podendo ser utilizados como produtos finais ou como matérias-primas para a produção de esmaltes cerâmicos ou pigmentos inorgânicos. Existem diversas possibilidades de destinação dos lodos galvânicos e, independente de qual seja adotada, conclui-se que é de extrema importância a sua retirada de dentro das empresas, para eliminar o enorme e crescente passivo ambiental. / Dissertação (Mestrado) / IPEN/D / Instituto de Pesquisas Energéticas e Nucleares - IPEN-CNEN/SP

The major purpose of this study was to attempt to determine word recognition and comprehension criteria for the frustrational level of reading by means of the galvanic skin response (GSR), in order to substantiate the conventional criteria used by authorities in the field. The sample consisted of 60 children in grades two and three, for whom parental consent for inclusion in the study had been obtained. Scores from a standardized reading achievement test were used to stratify all second and third grade children on reading achievement level (below, average, and above average). Ten children for each grade and reading achievement level were then randomly selected (N=60). Subjects were required to read the words on the Wide Range Achievement Test-Level 1 (1965) while being monitored on the GSR in order to obtain an index of each child's high arousal level. This level was then to have been used to indicate the frustrational level of reading as the child read the passages of the Diagnostic Reading Scales (1972), that was treated as an informal reading inventory. At this level, word recognition and comprehension accuracy scores were to have been obtained, and these compared to the existing criteria. However, during the reading of the Diagnostic Reading Scales passages no subject attained the arousal level obtained on the Wide Range Achievement Test, and therefore frustrational level of reading had to be determined from the criteria stated in Johnson and Kress (1965). As a result, alternate hypotheses were postulated. GSR arousal levels were obtained for the instructional and pre- frustrational levels of reading, for both the oral reading and comprehension sections of the test, and these statistically compared. At the frustrational level of reading, comparisons were made between the oral reading and comprehension sections of the test, the three reading achievement groups, and for the boys and the girls. Data were analyzed using a two-way analysis of variance for a repeated measures design. It was found that there was no significant difference between the oral reading of the passage and the comprehension section at both the instructional and frustrational levels of reading. The three reading achievement levels did not differ significantly in arousal at the frustrational level of reading. Implications of the results were discussed. / Education, Faculty of / Language and Literacy Education (LLED), Department of / Graduate

This diploma thesis deals with a project of the underslung sectional manipulator, which will be used in galvanic plants for material transportation. It deals specifically with the problem of swinging the weight during the main travel. It is also concerned with a design of options on frame gripping between the manipulators and with a design of control of the panel performing a vertical motion on the pillar.

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Indiana University-Purdue University Indianapolis (IUPUI) / A quasi-experimental design was undertaken to explore the possibility of utilizing electrodermal activity as a marker of intuitive decision making in nursing. This study compared 11 senior female nursing students to 10 female nurses with more than five years of nursing experience completing a clinical decision making task utilizing MicroSim© program software while measuring skin conductance response (SCR). The clinical decision making task chosen was based on the cognitive continuum theory. The somatic marker hypothesis is also a theoretical base for this study. This theory suggests that physiological markers are present during decision making. An independent t-test was conducted in SPSS comparing the total number of skin conductance responses generated and overall score in the card task and clinical scenario between the two groups. According to the Somatic Marker Hypothesis, the researcher’s definition of intuition, and the results of this experiment, SCR generation shows promise as a marker of intuitive decision making in nursing.

No description available.

Abstract Specifics included in thesis. / Thesis / Master of Engineering (MEngr)

<p> LiYO2 is a lithium ion conductor stable to pure lithium metal. The goal of the present work was to design and construct an electrochemical cell and demonstrate the use of LiYO2 as an electrolyte since this has never been previously done. The electrolyte was fabricated by slip casting in powder molds. A Y2O3-MgO composition was identified and used to fabricate a lid for the cell. Impervious cells were obtained by liquid phase joining and sintering techniques. Heating rate was found to be a key parameter in the success of this procedure. The cell was evaluated in terms of stability as a sensor and chemical pump by measuring EMF for two different Li-Zn alloys between 250 and 600°C. The configuration was as follows: (RE) (-) Ta Li,Sn | LiYO2 | Li,Zn Ta (+) (WE)</p> <p> The cell showed no significant attack after 40 days working with pure lithium. Stability and reproducibility of EMF values was obtained for the concentrations of Li studied. Solidus and liquidus temperatures were determined for the 5 and 10 mol% Li compositions in good agreement with published phase diagrams. Variations of EMF with respect to temperature or concentration followed the expected thermodynamic relationships. Results indicate that the LiYO2 electrolyte cell could be useful in assessment of the thermodynamics of lithium alloys.</p> / Thesis / Master of Engineering (MEngr)

No description available.