A investigação em Química no Portugal dos anos trinta do séc. XX - o estudo de caso da Professora Doutora Branca Edmée Marques
Bibliographic record
Abstract
Nesta dissertação estuda-se a atuação de Branca Edmée Marques enquanto bolseira da Junta de Educação Nacional (1931-35) no Laboratório Curie, em particular a sua atividade científica, recorrendo à sua correspondência com esta instituição (conservada no Instituto Camões). Para compreender, em linhas gerais, o contexto da Química em Portugal no primeiro quartel do século XX, especialmente na radioatividade, analisa-se o conteúdo da RCPA, referenciando também os trabalhos publicados noutras revistas científicas editadas em Portugal nesse período. Aborda-se a história da radioatividade e o papel assumido por Mme Curie, para melhor se compreender a atividade científica do Institut du Radium (Paris) e enquadrar a investigação desenvolvida por Branca Edmée naquele Laboratório. Verificou-se que Branca Edmée investigou a lei da repartição do rádio entre as fases sólida e líquida na cristalização e precipitação fracionadas dos sais de bário radífero, tendo publicado sobre o assunto várias comunicações e defendido uma tese no Doctorat d’Etat; ABSTRACT: This dissertation concerns the performance of Branca Edmée Marques as a scholarship of Junta de Educação Nacional (1931-35) in Curie.Lab, particularly her scientific activity, studying her correspondence with this institution (filed in Instituto Camões). The content analysis of RCPA is made to understand, in general terms, the context of Chemistry in Portugal in the first quarter of the twentieth century, especially on radioactivity, also referring to papers published in other scientific journals published in Portugal, in this period. The history of radioactivity and Mme Curie´s role are mentioned for a better understanding of the scientific activity of Institut du Radium (Paris) and to fit her investigation in the Curie.Lab where she studied the law of the distribution of radio between the solid phase and the liquid phase in the fractionated crystallization and precipitation of radifer barium salts, having several publications on the subject and defended a thesis for Doctorat d’Etat.
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How this classification was reachedexpand
Full frame machine prediction
Teacher imitationNot calibrated prevalence, not ground truth. Human validation pending. The Gemma side is a direct model label for every work in the frame, read from the title-only record. The Codex side is a classifier learned from the 10,348 direct Codex labels and calibrated to design-weighted sample rates; fields without enough sample support carry no Codex call. Candidate is the union of the two sides; consensus is their intersection. These outputs are machine_predicted_unvalidated and are not human labels.
Distilled classifier scores by category (both heads)
| Category | Codex | Gemma |
|---|---|---|
| Metaresearch | 0.003 | 0.004 |
| Meta-epidemiology (narrow) | 0.000 | 0.000 |
| Meta-epidemiology (broad) | 0.000 | 0.000 |
| Bibliometrics | 0.002 | 0.002 |
| Science and technology studies | 0.006 | 0.003 |
| Scholarly communication | 0.004 | 0.001 |
| Open science | 0.001 | 0.002 |
| Research integrity | 0.001 | 0.001 |
| Insufficient payload (model declined to judge) | 0.008 | 0.001 |
Machine scores (provisional)
The two teacher heads of the student model, read on this work. A score orders the frame for review; it never asserts a category, and the validation status ships verbatim with every row.
Baseline scores from an immature model (maturity gate not passed, 7 training rounds). Scores rank; they never assert a category.
score_only:v0-immature-baseline · verbatim from the scoring run: score_only means the number may rank works, and no category label ships from itClassification
machine, unvalidatedMachine predicted; a candidate call from one source (direct Gemma or distilled Codex), not a consensus.
How this classification was reached, model by model and score by score, is at the end of the page under "How this classification was reached".