CONTENTS Page Introduction .................................................................................................................. 127 Megascopic structures ...................................................................................................... 128 Hand-specimen petrology .....................................................................................................

Artemisinin is a sesquiterpene lactone endoperoxide extracted from a traditional Chinese medicinal plant Artemisia annua. Artemisinin-based combination therapies (ACTs) are recommended as the best treatment of malaria by the World Health Organization (WHO). Both the phytohormone jasmonic acid (JA) and light promote artemisinin biosynthesis in A. annua. Interestingly, we found that the increase ...

Human eyes are unique. Unlike other primates whose pupils are masked by a dark sclera, the human eye highlights a dark pupil against a white sclera. Newborn infants look longer at schematic stimuli with three blobs arranged in a face-like configuration – but only if the blobs match the dark-on-light phenotype of the human eye. If a visual preference for faces with human-like eyes is innately sp...

PURPOSE To study the circadian (24-hour) change in intracranial pressure (ICP) in conscious, freely moving rats and to project the circadian change in translaminar pressure difference. METHODS Telemetric pressure transmitters were implanted to monitor ICP in the lateral ventricle in nine light-dark-entrained Sprague-Dawley rats. ICP and locomotor activity data were collected. The mean results...

Retinal light damage in dark-reared rats supplemented with ascorbic acid and exposed to multiple doses of intermittent light was studied and compared with damage in unsupplemented dark-reared and cyclic-light-reared rats. The extent of photoreceptor cell loss from intense light exposure was determined by whole-eye rhodopsin levels and retinal DNA measurements two weeks after light treatment. Tw...

20. M. ABRIBAT.-Compte Rendu de la R6union de l'Institut d'Optique, April, 1935. 21. A. BROCA and D. SULZER.-Jl. Physiol. and Pathol. Gen., p. 4, 1902. 22. J. F. SCHOUTEN.-" Visuelle meting van Adaptatie." Schotanus and Jens, Utrecht, 1937. 23. W. D. WRIGHT.-Proc. Roy. Soc. B, p. 115,1934. 24. Proc. Roy. Soc. B, p. 122, 1937. 25. Brit. Ji. Ophthal., January, 1939. 26 W. S. STILES and B. H. CRAW...

A generic class of string theories predicts the existence of light moduli fields, and they are expected to have masses mφ comparable to the gravitino mass m3/2 which is in a range of 10 −2keV–1GeV in gauge-mediated supersymmetry breaking theories. Such light fields with weak interactions suppressed by the Planck scale can not avoid some stringent cosmological constraints, that is, they suffer f...

Determinations of minimum light thresholds as a function of time in the dark have been made for four color normal, three deuteranopic (or deuteranomalous), and four protanopic (or protanomalous) subjects. Measurements were made with red, reddish orange, yellow, green, violet, and white test lights. Dark adaptation curves for the deuteranopes and deuteranomalous are essentially identical with th...

beds. From the Council, Mr. Wake went on, a handsome sum was already received, and now that the 60 beds had been added, a grant towards the cost of their maintenance would be applied for. The Sheffield scheme continues to grow, and there seems little doubt that eventually its adoption may become universal in the city. In this event sufficient money should be available, not merely to support the...