CHARACTERIZATION OF AGE-RELATED CHANGES IN BODY WEIGHT AND ORGAN WEIGHTS FROM BIRTH TO ADOLESCENCE IN HUMANS
Why this work is in the frame
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Bibliographic record
Abstract
The pharmacokinetics and tissue dose of chemicals may differ among individuals of a population, particularly between adults and children. The adult-children differences in pharmacokinetics arise from age-related changes in the physiological, biochemical, and physicochemical determinants of uptake and disposition of chemicals. The objectives of this study were to review the published literature to assemble data on the human body weight and organ weights as a function of age (specifically between birth and 18 yr old) and to analyze these data, in order to develop regression equations for calculating body weight and organ weights of children using age as the dependent function. The specific organs/tissues for which the data on age-related weight were obtained and analyzed include blood, adipose tissues, liver, lungs, brains, heart, kidneys, spleen, the reproductive organs (male: prostate gland, seminal vesicle, testes, and epididymis; female: ovaries, uterus, and uterine tubes), glands (adrenal, pituitary, thymus, pancreas, and thyroid), bone marrow (total and red), intestinal tract, stomach, muscle, skin (epidermis and dermis), and skeleton. In both male and female children, the sum of these organs is systematically lower than the body weight, and this discrepancy may be resolved with the additional availability and consideration of data on hypodermis weight. The equations and data on body weight and organ weights presented in this article should be useful for constructing age-specific, physiologically based pharmacokinetic models for children.
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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 | 0.000 |
| 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) | 0.000 | 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 it