The impact of light irradiance, chlorophyll concentration and solvent on chlorophyll absorbance spectrum
Bibliographic record
Abstract
Nomenclature of chlorophyllAll the chlorophyll molecules are complexes with a magnesium atom which are derived from porphyrin and its di-and tetrahydro-derivatives (Goodwin, 1976).The peripheral carbon atoms are numbered 1--(Fischer et al., 1968).All chlorophylls unlike hemes which are iron complexes of porphyrin, contains one extra ring in addition to the four pyrrole rings (I-IV), this additional ring is referred as an isocyclic ring or ring V and it is biosynthetically derived by oxidation and cyclization of C-6 propionic acid onto the bridge atom (Cox et al., 1969).The following terms are used in this review to define chlorophyll and its derivatives:Phyllins: The derivatives of chlorophyll that contain magnesium.Pheophytin: These are magnesium free derivatives of chlorophylls.Chlorophyllide: The chlorophyll without the phyto chlorophyllase enzymeChlorophyllase: The enzyme which catalyzes hydrolysis of C7 propionate ester.Pheophorbides: The compounds having C7 propionic acid after the removal of the magnesium atom and the phytol from the chlorophyll molecule.Chlorins: Derivatives formed by cleavage of the isocyclic ring in pheophorbide a.Purpurins: Chlorin derivatives in which C-10 has been oxidized.Porphyrinogen: Hexahydro derivative of porphyrins formed by joining four pyrrole rings with saturated methylene bridges.
Fetched live from OpenAlex and de-inverted. Abstracts are not stored in this database: the inverted indexes are 8.6 GB of the frame’s 9.3 GB of text, and the host has 13 GB free.
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 | 0.001 | 0.001 |
| Meta-epidemiology (narrow) | 0.001 | 0.001 |
| Meta-epidemiology (broad) | 0.001 | 0.001 |
| Bibliometrics | 0.000 | 0.001 |
| Science and technology studies | 0.001 | 0.000 |
| Scholarly communication | 0.000 | 0.000 |
| Open science | 0.000 | 0.000 |
| Research integrity | 0.000 | 0.002 |
| 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".