نتایج جستجو برای: iranian snakes

تعداد نتایج: 44302  

1996
Ivá Valdés Yoshihiko Nomura Yasunaga Mitsuya

Delineation of irregular shaped objects can be realized using active contours, called snakes[l]. However, the minimization of the potential energy pushes the control points toward the lowest potential energy regions, so most of the control points lie in those regions and a few, or even no control points lie in other parts of the contours, as shown in the Fig.1. We propose an Equidistant Snake t...

2005
Gregory P. Brown Richard Shine Thomas Madsen

The extent, sequence, synchrony and correlates of diel displacements by animals can provide powerful insights into the ecological and social factors that shape an organism’s day-to-day activities, but detailed data on spatial ecology are available for very few tropical taxa. Radiotelemetricmonitoring of 25 slatey-grey snakes (Stegonotus cucullatus) on a floodplain in the Australian wet-dry trop...

2005
Taein Lee

Active contour models have been widely applied to image segmentation and analysis. It has been successfully used in contour detection for object recognition, computer vision, computer graphics, and biomedical image processing such as X-ray, MRI and Ultrasound images. The energy-minimizing active contour models or snakes were developed by Kass, Witkin and Terzopoulos in 1987. Snakes are curves d...

Journal: :Proceedings. Biological sciences 2015
Michail Rovatsos Jasna Vukić Petros Lymberakis Lukáš Kratochvíl

Amniote vertebrates possess various mechanisms of sex determination, but their variability is not equally distributed. The large evolutionary stability of sex chromosomes in viviparous mammals and birds was believed to be connected with their endothermy. However, some ectotherm lineages seem to be comparably conserved in sex determination, but previously there was a lack of molecular evidence t...

Journal: :Animal behaviour 2000
Belden Wildy Hatch Blaustein

Previous investigations have demonstrated the importance of predator diet in chemically mediated antipredator behaviour. However, there are few data on responses to life-stage-specific predator diets, which could be important for animals like amphibians that undergo metamorphosis and must respond to different suites of predators at different life-history stages. In laboratory choice tests, we i...

Journal: :iranian journal of basic medical sciences 0
mahdi babaie young researches and elites club, science and research branch, islamic azad university, tehran, iran hossein salmanizadeh young researches and elites club, science and research branch, islamic azad university, tehran, iran hossein zolfagharian department of venomous animals and antivenom production, razi vaccine and serum research institute, karaj, iran

objective(s): echis carinatus is one of the venomous snakes in iran. the venom of iranian echis carinatus is a rich source of protein with various factors affecting the plasma protein and blood coagulation factor. some of these proteins exhibit types of enzymatic activities. however, other items are proteins with no enzymatic activity.   materials and methods: in order to study the mechanism an...

2008
Franck Pommereau

This paper presents the toolkit snakes that is aimed at providing a flexible solution to the problem of quickly prototyping Petri nets tools. In particular, snakes is expected to have as few built-in limitations as possible with respect to the particular variant of Petri net to be used. The goal is to make snakes suitable for any kind of Petri net model, including new ones for which there exist...

Journal: :The American journal of physiology 1983
H B Lillywhite F H Pough

Cardiovascular responses to head-up tilt, acutely graded hemorrhage, and pharmacologic stimulation by principal autonomic drugs were studied in four species of marine snakes, principally Aipysurus laevis (family Hydrophiidae). Arterial pressure varied inversely with tilt angle and blood volume deficit in conscious snakes outside of water, indicating that physiological regulation was poor or lac...

Journal: :Ecotoxicology 2016
Joshua B Smith Kelsey L Turner James C Beasley Travis L DeVault William C Pitt Olin E Rhodes

Mass aerial delivery of dead mouse baits treated with acetaminophen has been evaluated as a means to reduce brown tree snake (Boiga irregularis) populations over large areas, increasing the likelihood of wide-scale eradication on Guam. Given the high density of snakes in some areas of their invasive range, eradication efforts could result in a resource pulse that may influence food web dynamics...

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