The compound eye of the cockroach nymph grows from stadium to stadium by the addition of new ommatidia to the growing edge of the eye. By a series of transplant operations on Periplaneta americana and from SEM studies on Gromphadorhina portentosa it is shown that the proliferating region of the eye margin is a budding zone. There is no recruitment of larval head-capsule epidermis into the eye.

We present a neglected heterodox version of Zeno’s paradox of the Stadium, underlining some problems that a discrete kinematics would have to account for. Building on our reconstruction of the Stadium argument we provide new arguments to show that a discrete kinematics cannot uphold three independently plausible assumptions about motion, that we label No Switching, Granular Continuity and Diffe...

A billiard in the form of a stadium with periodically perturbed boundary is considered. Two types of such billiards are studied: stadium with strong chaotic properties and a near-rectangle billiard. Phase portraits of such billiards are investigated. In the phase plane areas corresponding to decrease and increase of the velocity of billiard particles are found. Average velocities of the particl...

Large modern sports stadia are often multifunctional buildings that are not only used for sports purposes but also for other events such as concerts, conferences and festivities. Some of the stadia that have been built in recent years in north-western Europe are equipped with a semi-transparent roof that can be opened and closed, depending on the weather conditions and on the type of event. Whe...

The site of hydrocarbon (HC) synthesis and the amount of HC in various tissues were investigated in relation to developmental stage in the last larval stadium of the German cockroach, Blattella germanica. Abdominal integument linearly incorporated [1-(14)C]propionate into HC for at least 6h in vitro, whereas other body parts synthesized little or no HC. The third through sixth abdominal sternit...

AIM This paper aims to outline the medical services provided at the Moses Mabhida Stadium, Durban, South Africa for the Fédération Internationale de Football Association (FIFA) 2010 Soccer World Cup and audit the clinical services delivered to persons seeking medical assistance. METHODS Descriptive report of the medical facilities at the Moses Mabhida Stadium including the staff deployment. R...

The objective of the current study was to determine how predetermined factors contribute to a spectator's overall perceptions of a new college football stadium. It was predicted that fans who were highly identified with the SIU football team would have a more positive perception of the new stadium than low identified fans. Second, individuals' considering themselves to be sports fans would perc...

Federal Bureau of Investigation (FBI) offices in five U.S. cities have received warnings of an imminent bioterrorist attack. Each threat indicated that a “shower of anthrax would rain on U.S. cities,” unless certain demands were met immediately. One of these calls was in Northeast, a large city on the Eastern Seaboard with a metropolitan population of 2 million. The threats were credible, but n...

In a very interesting Letter, Alt et al. [1] have analyzed measurements on resonance widths of different eigen-modes of a superconducting cavity shaped like a stadium billiard, and have found agreement with a universal Porter-Thomas distribution (PT) [2]. However, one expects that the distribution in a stadium billiard is nonuniversal and should not obey Porter-Thomas due to the presence of bou...