Ethanolic crude extract of I. imbricata Lindl. (Iridaceae) was subjected to column chromatography on silica gel with varying portions of MeOH: CHCl3. Nigicin (irisolone) was isolated and its identification carried out by IR, UV, MS, 1-D and 2-D NMR spectroscopy.

The BlobTree provides a hierarchical data structure for the definition of complex models built from implicit surfaces, CSG Boolean operations and space warping functions. The implicit model within the system is defined as a hierarchical composition of multiple objects. In this paper, we describe an application of the BlobTree to create visually accurate models of two invertebrates, the sea anem...

Interspecific facultative mutualisms typically involve guilds of interacting species, and species within a guild can vary in the quality of services they provide. For plants that secrete extrafloral nectar (EFN), visitation by multiple ant species that vary in anti herbivore abilities may result in reduced benefits, relative to an exclusive association with a high-quality mutualist. This raises...

The Geobacillus icigianus G1w1(T) strain was isolated from sludge samples of unnamed vaporing hydrothermal (97°С) outlets situated in a geyser in the Troinoy region (Valley of Geysers, Kronotsky Nature Reserve, Kamchatka, Russian Federation; 54°25'51.40″N, 160°7'41.40″E). The sequenced and annotated genome is 3,457,810 bp and encodes 3,342 genes.

A theory of higher-derivative 2D dilaton gravity which has its roots in the massive higherspin mode dynamics of string theory is suggested. The divergences of the effective action to one-loop are calculated, both in the covariant and in the conformal gauge. Some technical problems which appear in the calculations are discussed. An interpretation of the theory as a particular D=2 higher-derivati...

Tatiana S. Pavlova a*, Alla B. Kholmogorova b, c a Center for Emergency Psychological Aid, Moscow State University of Psychology and Education, Moscow, Russia b Faculty of Psychological Counseling, Moscow State University of Psychology and Education, Moscow, Russia c Research Institute of Psychiatry, Federal Medical Research Center for Psychiatry and Narcology of the Ministry of Health of the R...

Management of species of conservation concern requires knowledge of demographic parameters, such as rates of recruitment, survival, and growth. In the Caribbean, hawksbill turtles (Eretmochelys imbricata) have been historically exploited in huge numbers to satisfy trade in their shells and meat. In the present study, we estimated growth rate of juvenile hawksbill turtles around Anegada, British...

We investigate the influence of the projective invariance on the renormalization properties of the theory. One-loop counterterms are calculated in the most general case of interaction of gravity with scalar field. Permanent address: Bogoliubov Laboratory of Theoretical Physics, Joint Institute for Nuclear Research, 141 980 Dubna (Moscow Region), Russian Federation E-mail: [email protected]...

We report here the complete genome sequence of a Newcastle disease virus (NDV) isolate, NDV/Altai/pigeon/770/2011, isolated from a rock dove in the Russian Federation. On the basis of phylogenetic analysis, this strain was clustered into genotype VIb class II.