Many in the field would not have believed that luminous bacteria could be responsible for continuous and substantial light emission from the surface of the ocean extending over an area as large as the state of Connecticut and detectable from space. But in a recent paper in the Proceedings of the National Academy of Sciences, Steve Miller and colleagues report such a luminescence event detected ...

T H E epithelium of the duodenal mucosa of vertebrates is strikingly uniform. In all but the cyclostomes and a few fishes, the epithelium is made up of tall columnar absorbing cells, with mucus-producing goblet cells interspersed. The columnar cells have a high cytoplasmic/ nuclear ratio, with the cytoplasm arranged into an apical zone containing a prominent Golgi apparatus, and a basal zone. T...

Tissue culture affords a method for the study of the direct effects of cytotoxins separated from the cellular defense, vascular reactions, clotting mech anism, and other mediators of resistance and homeostasis that exist in vivo. Lambert and Hanes in 1911 were the first to utilize this technic for such study (19). They reported that rat sarcoma would not grow in plasma coaguluni from guinea pig...

Photogenic predator: Coeloid cephalopods, a group of shell-less molluscs, evolved at around the time when vertebrates started to conquer land. As visual predators, they competed against early fi shes and developed remarkable complexity of body and behaviour. The photo shows the octopus Wunderpus photogenicus, found in shallow waters from Indonesia to the Philippines. (Photo: Roy L. Caldwell.) F...

This paper describes a method for spatial representation, place recognition and qualitative self-localization in dynamic indoor environments, based on omnidirectional images. This is a difficult problem because of the perceptual ambiguity of the acquired images, and their weak robustness to noise, geometrical and photometric variations of real world scenes. The spatial representation is built u...

Stress-related changes in visceral perception resulting in enhanced sensitivity to physiological and/or experimental visceral stimuli along with hypervigilance are considered to play a critical role in the pathophysiology of irritable bowel syndrome (IBS) (Elsenbruch et al., 2010; Mayer et al., 2008; Mulak & Bonaz, 2004; Posserud et al., 2004). Visceral hypersensitivity present in about two-thi...

Data on clinical, mycologic characteristics, and outcome of posttraumatic mucormycosis are scarce and often limited to case reports. From the French nationwide ‘‘RetroZygo’’ study, we compared posttraumatic mucormycosis cases with other forms of mucormycosis. We also reviewed reports of posttraumatic mucormycosis in the English-language literature from 1993 to 2013. We included all proven or pr...

Gaël Le MAHEC Université de Picardie Jules Verne E-mail: [email protected] The Data Management API for the GridRPC describes an optional API that extends the GridRPC standard. It provides a minimal subset of functions to handle a large set of data operations, among which movement, replication, migration and stickyness. We already showed that its use leads to 1) reduced time to complet...