FUNCTIONAL CHARACTERISTICS OF BIOLOGICAL PROTECTION «UNILINE»
Bibliographic record
Abstract
The aim of the work was to evaluate the hydrodynamic characteristics of the heart valve bioprosthesis «UniLine», intended for prosthetics of the aortic valve. Materials and methods . In the contest three prostheses «UniLine» with a size of 21, 23, 25 mm, intended for clinical use. The evaluation of the hydrodynamic parameters was carried out in a Vivitro pulsating flow setup (Vivitro Labs, Canada) simulating the operation of the «left» half of the heart. Estimated hydrodynamic function of all prostheses when creating the physiological mode of operation of the unit - impact volume = 70 ml, minute volume = 5 l/min, mean aortic pressure = 100 mmHg. Results . The average trans-prosthetic gradient was 5,4-15,5 mmHg.; the maximum trans-prosthetic gradient was 11,9-25,2 mmHg; effective orifice area 1,38-2,15 cm2; regurgitation fraction 1,5-3,905%; productivity index, calculated from the inner orifice diameter 47,4-68,5%. Conclusion . Bioprostheses «UniLine», intended for aortic position, demonstrated satisfactory hydrodynamic in vitro characteristics, comparable with existing world analogues. The existing design has the potential to increase hydrodynamic efficiency, but requires advanced approaches and methods, such as FSI, for its implementation.
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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 | 0.001 | 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) | 0.001 | 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 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".