Present-day cosmic abundances

Chemical Abundances over Cosmic Time

It has recently become possible to measure directly the abundances of several chemical elements in a variety of environments at redshifts up to z 4. In this review I summarise the latest observations of Lyman break galaxies, the Lyman alpha forest and damped Lyman alpha systems with a view to uncovering any clues which these data may offer to the first episodes of star formation. The picture wh...

The Present Day Treatment

In the last three or four years the treatment of diabetes has been greatly simplified, and the introduction of insulin has enabled the general practitioner to treat diabetes with a considerable degree of success. Yet there still appears to exist some confusion as to the indications and contraindications for certain well established therapeutic measures in the management of diabetes. It is the p...

Present-day Psychology

PRESENT-DAY PSYCHOLOGY. A. A. Roback, Editor, with the collaboration of forty experts in the variouis fields. New York, Philosophical Library. 1955. xiv, 995 pp. $12.00. In this volume an attempt is made to survey the entire field of contemporary psychology, incltudinig not only the traditional topics of academlic psychological interest, such as perception, cognition, attention, emotionl, etc.,...

Present-day Cluster Formation

A review is presented of some of the observed features of cluster formation in our Galaxy and in external galaxies. Evidence is summarized suggesting that star clusters form only in the densest parts of large star-forming complexes, and that the molecular clumps in which they form are compressed in part by the effects of earlier star formation. The formation of massive globular-like clusters ap...

Croup-present day concept.