Beta diversity

Genner, M.J., Taylor, M.I., Cleary, D.F.R. et al. (2004). Beta diversity of rock-restricted cichlid fishes in Lake Malawi importance of environmental and spatial factors. Ecography27,601-610. 

Condit, R. et al.. Beta-diversity in tropical forest trees. Science, 295, 666, 2002. 

Beta diversity measure of biodiversity, which consists of comparing the diversity of species among different ecosystems or along environmental... 

A D—T fusion reactor is expected to have a tritium inventory of a few kilograms. Tritium is a relatively short-Hved (12.36 year half-life) and benign (beta emitter) radioactive material, and represents a radiological ha2ard many orders of magnitude less than does the fuel inventory in a fission reactor. Clearly, however, fusion reactors must be designed to preclude the accidental release of tritium or any other volatile radioactive material. There is no need to have fissile materials present in a fusion reactor, and relatively simple inspection techniques should suffice to prevent any clandestine breeding of fissile materials, eg, for potential weapons diversion. 

Antiparallel beta (P) structures comprise the second large group of protein domain structures. Functionally, this group is the most diverse it includes enzymes, transport proteins, antibodies, cell surface proteins, and virus coat proteins. The cores of these domains are built up by p strands that can vary in number from four or five to over ten. The P strands are arranged in a predominantly antiparallel fashion and usually in such a way that they form two P sheets that are joined together and packed against each other. 

J. M. Frere, B. Joris, B. Granier, A. Matagne, F. Jacob, C. Bourguignon-Bellefroid, Diversity of the Mechanisms of Resistance to beta-Lactam Antibiotics , Res. Microbiol. 1991, 142, 705-710. 

MiravaUe, L., Tokuda, T., Chiarle, R., et al. (2000) Substitutions at codon 22 of Alzheimer s A-beta peptide induce diverse conformational changes and apoptotic effects in human cerebral endothelial cells. J. Biol. Chem., 275, 27110-27116. 

Henriques I, Moura A, Alves A et al (2006) Analysing diversity among beta-lactamase encoding genes in aquatic environments. EEMS Microbiol Ecol 56(3) 418 29... 

Girlich D, Poirel L, Nordmann P (2011) Diversity of clavulanic acid-inhibited extended-spectrum beta-lactamases iaAeromonas spp. from the Seine River, Paris, France. Antimicrob Agents Chemother 55(3) 1256-1261... 

Grogan G (2005) Emergent mechanistic diversity of enzyme- catalyzed beta-diketone cleavage. Biochem J 388 721-730... 

The causes and mechanisms of chronic pain syndromes are diverse (Lance 8c McLeod, 1981). A similarity with depression has been noted by several authors and it has been suggested that chronic pain syndromes might result from reduced activity in serotonergic systems involved in pain suppression and mood control (Moldofsky, 1982). Other authors have suggested that a causative factor in chronic pain syndromes might be abnormally low concentrations or activity of endogenous opioids, particularly beta-endorphin (Lip-man et al., 1990). 

Nontransuranic low-level wastes are diverse materials which are contaminated with low levels of beta- and gamma-emitting isotopes, but which contain less than 10 nanoCuries of long-lived alpha activity per gram. 

Chen, X., Bonne, S., Hatzfeld, M., van Roy, F., and Green, K.J. (2002). Protein binding and functional characterization of plakophilin 2. Evidence for its diverse roles in desmosomes and beta-catenin signaling. J. Biol. Chem. 277, 10512-10522. 

---