the aim of this research was to study the relationships between presence of plant species and environmental factors in garizat rangelands of yazd province and providing their predictive habitat models. after delimitation of the study area, sampling was performed using randomized-systematic method. accordingly, vegetation data including presence and cover percentage were determined in each quadr...

Two new resveratrol trimer derivatives, named rheumlhasol A (1) and rheumlhasol B (2) were isolated from the methanolic extract of roots of Rheum lhasaense A. J. Li et P. K. Hsiao together with four known resveratrol dimer derivatives, including maximol A (3), gnetin C (4), ε-viniferin (5), and pallidol (6). The structures were determined by combined spectroscopic methods and by comparison of t...

This paper des ribes four re ent papers on lustering, ea h of whi h approa hes the lustering problem from a di erent perspe tive and with di erent goals. It analyzes the strengths and weaknesses of ea h approa h and des ribes how a user ould ould de ide whi h algorithm to use for a given lustering appli ation. Finally, it on ludes with ideas that ould make the sele tion and use of lustering alg...

Acheson, E. D., (1960). Quart. 7. Med., 29, 489. Ansell, B. M., and Wigley, R. A. D. (1964). Ann. rheum. Dis., 23, 64. Bockus, H. L., Roth, J. L. A., Buchman, E., Kalser, M., Staub, W. R., Finkelstein, A., and Valdes-Dapena, A. (1956). Gastroenterologia (Basel), 86, 549. Bywaters, E. G. L., and Ansell, B. M. (1958). Ann. rheum. Dis., 17, 169. Court Brown, W. M., and Doll, R. (1957). Spec. Rep. ...

BACKGROUND AND AIMS Rheum, a highly diversified genus with about 60 species, is mainly confined to the mountainous and desert regions of the Qinghai-Tibetan plateau and adjacent areas. This genus represents a good example of the extensive diversification of the temperate genera in the Qinghai-Tibetan plateau, in which the forces to drive diversification remain unknown. To date, the infrageneric...

ankylosing spondylitis. Arthritis Rheum 2006;54:2845–51. 17. Rudwaleit M, Schwarzlose S, Hilgert ES, Listing J, Braun J, Sieper J. MRI in predicting a major clinical response to anti-tumour necrosis factor treatment in ankylosing spondylitis. Ann Rheum Dis 2008;67:1276–81. 18. Bennett AN, Rehman A, Hensor EMA, Marzo-Ortega H, Emery P, Mc Gonagle D. Evaluation of the diagnostic utility of spinal...

Studies of facilitation have primarily been limited to single mechanisms, species, or environments. We examined interacting mechanisms governing the facilitative effects of Pinus flexilis on two later successional understory species, Pseudotsuga menziesii and Ribes cereum, in different microhabitats and seasons at the ecotone between the Rocky Mountain forests and Great Plains grasslands in Mon...

3 Tan E M, Rodnan G P, Garcia I, Moroi Y, FritzlerM J, Peebles C. Diversity of antinuclear antibodies in progressive systemic sclerosis. Arthritis Rheum 1980; 23: 617-25. 4 Giordano M. Classification of progressive systemnic sclerosis. International Conference on PSS (scleroderma). Austin, 20-23 October 1981. Arthritis Rheum in press. 5 Giordano M, Valentini G, Ara M, Tirri G, Capeili L, Vatti ...