Characterization of a Pulsed Nanosecond High-Pressure Nitrogen Discharge for Ammonia Production
Bibliographic record
Abstract
The production of ammonia, an essential precursor to fertilizer, is currently achieved via the Haber-Bosch process and represents nearly 2% of annual global energy consumption [1]. Thus, new energy efficient and high yield ammonia production methods are of great interest. According to Le Chatelier 's principle, ammonia production requires low temperature and high pressure conditions [2]. Non-thermal plasma creates an ideal high-energy environment necessary to break nitrogen and hydrogen molecules to produce ammonia. However, maintaining a low temperature non-thermal plasma of useful volume at high pressure is exceedingly difficult. Common power supplies are unable to deliver the energy necessary to sustain a non-thermal plasma above atmospheric pressure. Therefore, this study required the use of a homemade high voltage double polarity nanosecond-pulsed power supply to sustain a non-thermal plasma at high pressure. The highvoltage pulses were delivered simultaneously at nanosecond intervals, therefore preventing the streamer-to-spark transition and favoring low temperature conditions.
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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 | 0.000 | 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) | 0.002 | 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".