Determination of tanshinone I, tanshinone IIA, and cryptotanshinone in <i>Salvia miltiorrhiza bunge</i> and urine sample by HPLC
Bibliographic record
Abstract
Abstract A simple and sensitive HPLC method to detect tanshinone I, tanshinone IIA, and cryptotanshinone in human urine was developed and validated. Chromatographic separation was achieved on a C 18 column (4.6 mm × 250 mm, 5 µm) using a mixture of methanol/water (78:22 v/v, containing 0.5% acetic acid) as the mobile phase at a flow rate of 0.5 mL/min with UV detector at 254 nm. The calibration curve of tanshinones was linear over a range of 1.0 × 10 −4 – 1.0 mg/mL. The limit of quantification (LOQ) was found to be 57.0, 76.0, and 45.0 ng/mL, respectively. This method can estimate the pharmacokinetic parameters of tanshinones in human urine after the intravenous and intraperitoneal administration of stanchions.
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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 | 0.001 |
| 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".