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Ceramics Tell the Story of an Ancient Southwest Migration

By Guest PostJune 5, 2012Culture, Scienceancient, archaeologist, arizona state museum, byron cummings, ceramics, charles adams, colorado plateau, confluence, diaspora, doctoral dissertation, east central arizona, emil haury, excavations, four corners region, gila, grasshopper, homolovi, jannelle weakly, jeff harrison, kayenta polychrome vessel, kayenta region, kinishba, masters theses, mogollon rim, patrick lyons, perforated plates, point of pines, river, san pedro, social unrest, southwest migration, university of arizona, vessel, winslow

Another look at a nearly 80-year-old pottery collection at the Arizona State Museum is yielding new information about migrants who abandoned the Four Corners region.

Approximately eight centuries ago, people living along the Colorado Plateau in what is now the Four Corners area faced a crisis. Environmental changes that devastated their agricultural practices and likely aggravated social unrest forced significant numbers of these people to move away.

Many of them headed south into central and southern Arizona and western New Mexico, into lands already inhabited by well-established groups.

What is remarkable about this diaspora is that while there is no written record of what happened, much of what archaeologists know is told in the ceramic bowls, plates and figurines that were created and left behind when those civilizations later collapsed. (more…)

Inspired by Insects

By Guest PostApril 25, 2012Sciencebioactive hydrogel matrices, biomimetic, cell adhesion, cicadas, degradation, elastic, frequency, gel, grasshopper, hmscs, human mesenchymal stem cells, kristi kiick, microsecond, multipotent cells, phonation, polypeptide hydrogel, protein, radio wave, regenerative power, resilin, speak, susan thibeault, timothy mcculloch, tissue, torsional wave apparatus, united states, university of delaware, vibratory stimulation, vocal folds, voice problem, words, xinqiao jia

For treatment of vocal fold disorders, UD researchers look to insect protein

A one-inch long grasshopper can leap a distance of about 20 inches. Cicadas can produce sound at about the same frequency as radio waves. Fleas measuring only millimeters can jump an astonishing 100 times their height in microseconds. How do they do it? They make use of a naturally occurring protein called resilin.

Resilin is a protein in the composite structures found in the leg and wing joints, and sound producing organs of insects. Highly elastic, it responds to exceptionally high rates of speed and demonstrates unmatched resilience after being stretched or deformed. (more…)

Frogs’ Amazing Leaps Due to Springy Tendons

By Guest PostDecember 3, 2011Nature, Science3 d x ray video technology, biomechanics of frog jumping, brown university, bush babies, calaveras county, elastic mechanism, elastic structure, frog jumping, frog jumping competition, frogs, grasshopper, guinea fowl, henry astley, humble flea, invertebrates, milliseconds, muscles, northeast united states, northern leopard frog, pond frog, rana pipiens, richard lewis, species of frogs, thomas roberts, vertebrates

*The secret to frogs’ superlative jumping lies in their tendons. Researchers at Brown University, filming frogs jumping at 500 frames per second with special X-ray technology, show that the frog’s tendon stretches as it readies its leap and then recoils, much like a spring, when the frog jumps. The finding could explain how other animals are exceptional leapers. Results appear in Biology Letters.*

PROVIDENCE, R.I. [Brown University] — Some species of frogs and many other animals are able to jump far beyond what appear to be their capabilities. The trained contestants in the frog-jumping competition in Calaveras County, Calif., come to mind, but even ordinary frogs can leap several times farther than their physiology would seem to allow.

“Muscles alone couldn’t produce jumps that good,” said Henry Astley, who studies the biomechanics of frog jumping at Brown University. (more…)

Tag Archives: grasshopper

Ceramics Tell the Story of an Ancient Southwest Migration

Inspired by Insects

Frogs’ Amazing Leaps Due to Springy Tendons