Tag: "faint" at biology news
CT scan reveals ancient long-necked gliding reptile
...rd dolomitized dark gray, silty mudstone, and only faint
impressions of the bones can be seen at the surface. Repeated attempts to remove the matrix using both mechanical and chemical techniques have been unsuccessful." "The fossils sit on sheets of stone less than a quarter inch thick," says Tim M Ryan...
Ancient amphibians evolved a bite before migrating to dry land
...ces. "A biting or chewing motion would result in a faint
pushing together of the frontal bones in the skull, while a sucking motion would pull those bones ever so slightly apart. By comparing the skull roofs of living fish to those of early amphibians and their fishy ancestors, we were able to determine wh...
Long-term changes in experience cause neurons to sprout new long-lasting connections
...ime. "Under normal conditions, most new spines are faint
and small, and disappear after a couple of days," said Svoboda. "What we think they are doing is reaching out and probing for potential neuronal partners. And while most of them retract, with novel sensory experience some populations of these new spi...
Robot-based system developed at Carnegie Mellon detects life in Chile's Atacama desert
...any times, the images we capture may only reveal a faint
signal. Any sunlight that leaks in to the camera of a conventional fluorescence imager would obscure the signal," said Waggoner. "To avoid this problem, we designed our system to excite dyes with high intensity flashes of light. The camera only open...