The Changing Bay of Fundy—Beyond 400 Years D. CONTAMINANTS THE OCCURRENCE, BEHAVIOUR AND FATE OF NATURAL AND SYNTHETIC ESTROGENIC COMPOUNDS IN HALIFAX HARBOUR
Bibliographic record
Abstract
In recent years, there has been a great deal of concern in the scientific community about a group of chemicals, found in treated and untreated sewage effluents, known as endocrine disrupting com-pounds (EDCs). A specific group of EDCs, known as estrogenic compounds, are capable of mimicking the natural endogenous hormone estradiol, and in turn causing specific changes in the sexual develop-ment of many aquatic organisms (Arcand-Hoy et al. 1998). A variety of compounds have been identi-fied as being estrogenic compounds, including the natural estrogen hormones, and many anthropogenic compounds, such as certain pharmaceuticals and synthetic industrial compounds. An important aspect of the research in the field of estrogenic compounds is to examine their behaviour and fate once they are released into the environment in sewage effluents. To date, the major-ity of research on this topic has occurred in freshwater environments (Lai et al. 2000; Holthaus et al. 2002; Jürgens et al. 2002), while research in the marine environment is limited (Ying and Kookana 2003). The goal of this study is to examine the behaviour and fate of several estrogenic compounds in the marine environment. To accomplish this, an analytical method has been developed to detect several phenolic estrogenic compounds in marine samples. This method was applied to samples collected from Halifax Harbour. These samples were also used to conduct experiments in the laboratory to examine the
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How this classification was reachedexpand
Full frame distilled prediction
Teacher imitationNot calibrated prevalence, not ground truth. Human validation pending. Learned from the 10,348 direct Codex labels and 10,348 direct Gemma labels. Candidate is the union of thresholded teacher heads; consensus is their intersection. These outputs are machine_predicted_unvalidated and are not human labels or direct frontier model labels.
Codex and Gemma teacher scores by category
| Category | Codex | Gemma |
|---|---|---|
| Metaresearch | 0.000 | 0.000 |
| Meta-epidemiology (narrow) | 0.000 | 0.000 |
| Meta-epidemiology (broad) | 0.000 | 0.000 |
| Bibliometrics | 0.000 | 0.000 |
| Science and technology studies | 0.000 | 0.000 |
| Scholarly communication | 0.000 | 0.000 |
| Open science | 0.000 | 0.000 |
| Research integrity | 0.000 | 0.000 |
| Insufficient payload (model declined to judge) | 0.000 | 0.000 |
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 teacher head, 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".