Tag: "upright" at biology news
Researchers create nanotubes that change colors, form 'nanocarpet' and kill bacteria
...e nanotubes organize themselves into an expanse of upright
clusters that when magnified a million times resemble the fibers of a shag rug. Moreover, unlike other nanotube structures, these tubes display sensitivity to different agents by changing color and can be trained to kill bacteria, such as E. coli, wi...
Study explains spatial orientation differences between sexes
...head (perpendicular to the body orientation) while upright
and when tilted 45 degrees backward. To test whether cognitive processes affected spatial orientation, participants who were tested in the dark were told to focus on external or internal cues to help them orient the laser. He found that although in...
Deciphering the limits to human maximal exercise performance
...idence showing that during maximal exercise in the upright
position the combined maximal arm and leg blood fl...o avoid hypotension during maximal exercise in the upright
position, humans must restrain the voracity for blood flow of active muscles. This finding may facil...
New proteomics core at OHSU will speed discovery process
...els, as well as a mass spectrometer the size of an upright
piano, and a liquid chromatography machine. And the latest software helps Bystrom and his research associate, Deb McMillen, manage the samples, analyze the proteins and mine genome databases around the world to help identify them. But protein sa...
Scientists await first call from Beagle
...tch" design of Beagle 2 ensured that it would turn upright
irrespective of which way up the little lander fell. After the onboard computer sent commands to release the clamp band and open the lid, the way would be clear to deploy the four, petal-like solar panels and initiate charging of the batteries. Conf...
Wildlife markets and disease transmission
...ife and human disease. Since humans first walked upright
they have eaten wildlife. But human population densities were far lower than today well under one person per square mile in most tropical forests, for example. Animals were only hunted on a scale to support the subsistence needs of local human popul...
UCI biologist proposes trimming some branches
... of these new branches, Sahelanthropus, could walk upright
-- an important factor in deciding whether they fit in the Hominid family. Ayala and Cela-Conde propose trimming the currently recognized human evolutionary tree by eliminating as branches Paranthropus, Orrorin and Kenyanthropus. Instead, Ayala and C...
From the bone of a horse, a new idea for aircraft structures
...earchers tested the plate by placing it across two upright
pillars and weighing it down, comparing the results with those from an identical test of a plate with a drilled hole without the foam stabilizer. It took twice the weight to break the biomimetic plate. Moreover, when it did finally break, the fractur...
Space Shuttle returns first soybeans grown on Space Station in commercial farming experiment
...ustries." Plants need lignin for strength to stand upright
under the force of Earth's gravity. But this chemical must be removed to produce paper -- a costly process that results in pollution. Reducing the lignin content of plants could make it less expensive to produce paper and reduce pollution. Another si...
Scientists identify motor that powers parasitic cell invasion
...eshly released parasites exhibit circular gliding, upright
twirling and helical gliding. But with only partial gene function the parasites performed a reduced number or incomplete circles and at a lower speed. With the gene completely shut down the parasites were totally unable to move." "Toxoplasma remains ...
Actonel significantly reduced moderate and severe vertebral fractures
...nent of this product, or inability to stand or sit upright
for at least 30 minutes. Hypocalcemia and other disturbances of bone and mineral metabolism should be effectively treated before starting Actonel therapy. Actonel is not recommended for use in patients with severe renal impairment (creatinine clear...
New device detects fetal brain response to light: May help prevent brain damage
...xcluded from the study. The expectant mothers sat upright
on the SARA machine and leaned forward into a concave array of 151 sensors that surrounded the abdomen. The researchers then used a fiber-optic cable to deliver light pulses to the outside of the mother's abdomen while they recorded MEG data. The l...
Scientist says ostrich study confirms bird 'hands' unlike those of dinosaurs
...use both groups developed body designs for walking upright
on two hind legs and began to resemble each other over millions of years. "It is now clear that the origin of birds is a much more complicated question than has been previously thought," Feduccia said....
Researchers discover clues to whale evolution
...pecialized organs or abilities (like the brain and upright
walking habit of man) provide mechanisms by which highly evolved organisms dominate in certain environments. The semicircular canals sense head movements and this vital information is used to coordinate the body during locomotion. This happens s...
Origin of bipedalism seems most closely tied to environmental changes
...m is the one that says our ancestors began walking upright
largely in response to environmental changes in particular, to the growing incidence of open spaces and the way that changed the distribution of food. In response to periods of cooling and drying, which thinned out dense forests and produced mosaics...
Human ancestor Australopithecus did indeed walk upright
... argument whether or not they could stand and walk upright
like people do. William Sanders, a paleontologist... lower back specializations that allow us to stand upright
habitually, and to walk effectively and efficiently on two legs. These differ from the anatomical co...
UNC geologist, students to unveil 221 million-year-old top N.C. fossil
... walked on their toes, these guys walked partially upright
on their heels and toes like humans do and dominated the world until the dinosaurs took over, he said. They dominated the early dinosaurs too, but then went extinct, possibly because of climate change or a global catastrophe such as an asteroid or co...
UT Southwestern space researchers pinpoint mechanism involved in loss of consciousness after space flight
...theadedness that many astronauts experience in the upright
posture after space flight. The findings have broa...ronauts after space flight in response to standing upright
may not be necessary. Rather, efforts to combat the primary problem, namely an excessive reduction i...
Subjects lying face up reveal a reduced ability for 'nasal air conditioning'
...e cavernous sinusoids has not been measured in the upright
and supine positions, an increase in nasal blood v...change in nasal cavity volume on changing from the upright
to the supine position. Because the nasal cavity has defined anatomic limits, an increase in blood v...
Women more susceptible to orthostatic hypotension
...enter, Many patients also note other symptoms with upright
posture: visual changes, discomfort in the head or...hanisms of this gender difference are unclear. The upright
posture causes reductions in venous return leading to diminished stroke volume (SV) and cardiac outp...