Mechanical and microstructural characterization of 45S5 Bioglass® scaffolds for tissue engineering
Bibliographic record
Abstract
Bioglass® 45S5 is the most widely investigated bioactive glass. It was recently demonstrated that this glass is better integrated into bone when the structure is porous. The National Research Council Canada has recently developed a process to produce metallic and ceramic foams using a powder metallurgy approach. Preliminary tests showed that Bioglass® foams can be produced with this process. These foams are produced by foaming a powder mixture composed of Bioglass® particles, a binder and a foaming agent. Highly porous Bioglass® foams (64-79% porosity) were successfully synthesized from dry powder blends. The porosity of the resulting foams was open and the pore size was essentially between 175 and 880 μm in diameter, as required for bone ingrowth. During sintering, crystallization took place and Na6Ca 3Si6O18 (primary phase) and Na 2Ca4(PO4)2SiO4 (secondary phase) were observed. The mechanical compressive strength ranged from 1.7 to 5.5 MPa.
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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 | 0.000 | 0.000 |
| Meta-epidemiology (narrow) | 0.000 | 0.000 |
| Meta-epidemiology (broad) | 0.000 | 0.000 |
| Bibliometrics | 0.001 | 0.001 |
| 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".