Bibliographic record
Abstract
Introduction L-Cysteine is an important amino acid because of its role in various biochemical pathways (1). Considering that L-cysteine is one of the few amino acids with significant redox characteristics, it was considered worthwhile to investigate its electrochemical behavior in various media and electrode surfaces. Experimental L-Cysteine was obtained from Sigma-Aldrich. Electrochemical experiments were carried out using a Gamry Interface 1000 potentiostat and Gamry Framework software. Potentials are referenced against a Ag/AgCl reference electrode. Platinum and glassy carbon electrodes were obtained from BASi. Results and Discussion At a platinum electrode, L-cysteine in aqueous 0.10 M KNO 3 produced a cyclic voltammogram with two merged oxidation processes (Figure 1), which were much more clearly resolved using differential pulse voltammetry. Preparative electrolysis at the potential of the first oxidation process (+0.80 V) resulted in the precipitation of cystine, which is the coupling product formed as a result of one-electron L-cysteine oxidation. The current for the reduction peak at -0.60 V (dotted line in Figure 1) increased during the electrolysis, suggesting that this reduction process is related to cystine formation. Similar results, including cystine formation, were also obtained in aqueous phosphate buffer at pH 7. It is likely that the platinum oxide layer on the electrode surface plays a role in L-cysteine oxidation under these conditions (2). The results of additional studies of L-cysteine oxidation in other media, particularly dimethylsulfoxide (DMSO), are also planned for presentation. References C. K. Mathews, K. E. Van Holde, D. R. Appling, and S. J. Anthony-Cahill, Biochemistry, 4 th Edition , Pearson Canada, Toronto, 2013. J. Koryta and J. Pradac, J. Electroanal. Chem. , 17 , 185-189 (1968). Figure 1. Cyclic voltammogram of 10 mM L-cysteine at platinum in aqueous 0.10 M KNO 3 . 100 mV/s. First sweep (solid line), second sweep (dotted line). Figure 1
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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 | 0.001 |
| 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".