Snapshot: Venus by day and night

Passenger vehicle occupant fatalities by day and night--a contrast.

The passenger vehicle occupant fatality rate at nighttime is about three times higher than the daytime rate. In 2005, among the fatally injured passenger vehicle occupants, the proportion of unrestrained occupants was much higher during nighttime than daytime. Also during nighttime, among passenger vehicle occupants killed in crashes, alcohol involvement, speeding, and single-­vehicle crash fat...

Liver size: Waning by day, Waxing by Night.

Hans Reinke * and Gad Asher * 1 University of Düsseldorf, Medical Faculty, Institute of Clinical Chemistry and Laboratory Diagnostics, 40225 Düsseldorf, Germany. 2 IUF-Leibniz Research Institute for Environmental Medicine, 40225 Düsseldorf, Germany. 3 Department of Biomolecular Sciences, Weizmann Institute of Science, Rehovot, 7610001, Israel. * Correspondence to: [email protected]...

The difference between night and day.

Day and Night: Circadian Rhythms in Worms

Most organisms seem to show ‘‘circadian rhythms’’—cycles of behaviour or gene expression that repeat roughly every 24 hours. Such cycles represent an internal circadian clock that can be ‘‘entrained,’’ or synchronized, to a regular light/dark or temperature cycle, and will then continue to cycle in the absence of the light or temperature stimulus. In the nematode worm Caenorhabditis elegans, ho...

Vehicle Detection under Day and Night Illumination

Effective detection of vehicles in urban traffic scenes can be achieved by exploiting image analysis techniques. Nevertheless, vehicle detection in daytime and at night can’t be approached with the same image analysis algorithms, due to the strongly different illumination conditions. This paper describes the two different sets of image analysis algorithms that have been used in the VTTS system ...