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Substrate vibrations in the scorpion Centruroides margaritatus (Scorpiones: Buthidae) during courtship
(Rev. Biol. Trop. (Int. J. Trop. Biol. ISSN-0034-7744) Vol. 57 (Suppl. 1): 267-274, November 2009, 2009-11)
Mating behavior in Centruroides margaritatus, as in other scorpion species, includes a series of rapid
rocking or shaking movements of the male (“juddering”). It has been suggested that substrate vibrations are
generated ...
Effect of macronutrients and sucrose concentration on in vitro growth of Drosera capensis L. (Droseraceae) plants, and evaluation of six substrates for acclimatization
(2011-01)
The effect of two concentrations of the Murashige and Skoog macronutrients (full and half strength), in combination with three concentrations of sucrose (1.5, 3.0 and 4.5% w/v), was evaluated on the in vitro growth of ...
Propagación asexual de azul de mata (Justicia tinctoria (Oerst.) D.N. Gibson, Fam. Acanthaceae) por medio de estacas
(2015-03)
Se evaluó el efecto de dosis de ácido indolbutírico (0, 500, 1000 o 1500 ppm), la posición de donde se toma la estaca (basal, medial o terminal), el tamaño de la estaca (6, 10 o 14 cm), la ausencia o ...
High resolution analysis of snake venom metalloproteinase (SVMP) peptide bond cleavage specificity using proteome based peptide libraries and mass spectrometry
(2011-04-01)
Both serine and metalloproteinases have been shown to play the role of toxins in the venoms of many snakes. Determination of the natural protein substrates of these toxins is an important feature in the toxinological ...
Effect of various Viperidae and Crotalidae snake venoms on endothelial cells in vitro
(1994)
The effect of various crotalid and viperid venoms at 10, 50 and 100 μg/ml was examined on bovine and murine endothelial cells in vitro. The venoms caused the cells to lose their processes, leading to the appearance of ...
Exposure of a Tropical Soil to mg/kg of Oxytetracycline Elicits Hormetic Responses in the Catabolic Activities of its Microbial Community
(2011-04)
Many farmers in developing countries protect their crops with oxytetracycline and fertilize their farmlands with manure from animals that received this drug as growth promoter. In this study, a tropical soil was exposed ...
Room temperature gas-solid reaction of titanium on glass surfaces forming a very low resistivity layer
(2016-09)
Titanium films were deposited on quartz, glass, polyamide and PET substrates in a high vacuum system at room temperature and their electrical resistance monitored in vacuo as a function of thickness. These measurements ...
In vitro activity of BaH1, the main hemorrhagic toxin of Bothrops asper snake venom on bovine endothelial cells
(1995-10)
Incubation of BaH1, the main hemorrhagic toxin purified from the venom of Bothrops asper, with endothelial cells caused the appearance of spaces among the cells. This effect became more noticeable with increasing hemorrhagin ...
Does elevation influence the distributional patterns of tropical myxomycetes? A case study in Costa Rica
(2016)
In order to test the hypothesis that elevation may be an important factor accounting for the
distribution of myxomycetes in tropical forests, this project was designed and conducted in Costa
Rica. Two lower elevational ...
Phospholipase C and sphingomyelinase activities of the Clostridium perfringens Alfa-toxin
(Chemistry and Physics of Lipids, 2009-02)
Alfa-Toxin is a major pathogenic determinant of Clostridium perfringens, the causative agent of gas gangrene. Alfa-Toxin has been known for long to be a phospholipase C, but up to now its hydrolytic properties have been ...