𝔖 Bobbio Scriptorium

✦ LIBER ✦

A COMPARISON OF UNIT, SUBJECTIVE, AND REGRESSION MEASURES OF SECOND-LEVEL VALENCES IN EXPECTANCY THEORY

✍ Scribed by Michael J. Stahl; David W. Grigsby

Book ID: 109167058
Publisher: Decision Sciences Institute, Georgia State University
Year: 1987
Tongue: English
Weight: 272 KB
Volume: 18
Category: Article
ISSN: 0011-7315
DOI: 10.1111/j.1540-5915.1987.tb01503.x

No coin nor oath required. For personal study only.

📜 SIMILAR VOLUMES

Saliva and serum samples were collected

Saliva and serum samples were collected from eight healthy volunteers every two hours during a 26-hour period. Melatonin concentrations were measured by radioimmunoassay after chloroform extraction using radioiodinated melatonin as a tracer. Five of the subjects had high serum melatonin levels at night (peak levels higher than 75 pg/ml); in three subjects the highest serum melatonin concentration was 20-40 pg/ml. All subjects had low levels (P <0.001, was obtained for all detectable value pairs (n= 73). The regression and correlation coefficients were almost equal for the peak values of melatonin and during the rising and descending phases of the secretion patterns. However, no significant correlation was found between low daytime salivary and serum concentrations when calculated separately. In the five high-secretors the melatonin levels in saliva reflected reliably the changes in serum, but in the three low-secretors the correlation between salivary and serum melatonin was not significant. The proportion of melatonin found in saliva decreased with increasing serum melatonin levels. Circadian rhythm parameters were estimated by single cosinor analysis. The acrophases did not differ significantly within a subject in the concomitant measurements of serum and salivary melatonin. The measurements of salivary melatonin levels seem valid for studies on melatonin rhythms, but the melatonin concentrations measured in saliva do not always consistently reflect the absolute concentrations in blood.

✍ Maija-Liisa Laakso; Tarja Porkka-Heiskanen; Aino Alila; Dag Stenberg; Gunnar Joh 📂 Article 📅 1990 🏛 John Wiley and Sons 🌐 English ⚖ 622 KB

The practice of Absorption Spectrophotom

The practice of Absorption Spectrophotometry with Hilger-Instruments. An introduction to the Theory of the Subject, and guide to the Technique of Absorption Measurement in the Visible, Ultra-Violet and Infrared Regions of the Spectrum. By F. Twyman, F. Inst. P., F. R. S.; and C. B. Allsopp, M. A., Ph. D. Second edition, June 1934. Adam Hilger, Ltd., 98 Kings Road, Camden Road, London, N.W. 1, England. 140 Seiten, mit 40 Abbildungen im Text. Preis geb. 12 s. 6 d.

📂 Article 📅 1934 🏛 John Wiley and Sons 🌐 English ⚖ 87 KB 👁 3 views