نتایج جستجو برای: jellyfish
تعداد نتایج: 2096 فیلتر نتایج به سال:
There are about 150 million jellyfish stings every year. "Portuguese man of war" is responsible for substantial proportion of stings worldwide. The biggest risk from a jellyfish stings may come from incorrect management. A 42-year-old woman was severely stung by venomous marine animal while bathing in waters of the Thai Gulf. It was most likely "Portuguese man of war". The patient didn't rememb...
of jellyfish that causes the sting, it can be useful to apply vinegar, a 1:1 aqueous solution of sodium bicarbonate, or a saturated solution of magnesium sulfate in a solution of sodium chloride. Jellyfish sting reactions are very common on the Spanish coast in summer. Therefore, although these reactions tend to be local and short-lasting, we consider it important to know how to deal with them ...
Since the collapse of the pelagic fisheries off southwest Africa in the late 1960s, jellyfish biomass has increased and the structure of the Benguelan fish community has shifted, making the bearded goby (Sufflogobius bibarbatus) the new predominant prey species. Despite increased predation pressure and a harsh environment, the gobies are thriving. Here we show that physiological adaptations and...
An opsin receptor has a central role in the production and release of eggs by female jellyfish.
We present a framework for animating the major features of jellyfish motion. Specifically, we concentrate on simulating the contracting and expanding umbrella of a fully grown jellyfish. The outer surface of the umbrella is treated as an elastic body, simulated numerically with a spring-mass system. The thrust generated by umbrellar contraction is calculated with approximated models and based o...
Studying the mechanics of swirling water has solved a mystery about the evolution of body shape and size in jellyfish.
Quantifying the flows generated by the pulsations of jellyfish bells is crucial for understanding the mechanics and efficiency of their swimming and feeding. Recent experimental and theoretical work has focused on the dynamics of vortices in the wakes of swimming jellyfish with relatively simple oral arms and tentacles. The significance of bell pulsations for generating feeding currents through...
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