News tagged with american journal of physics
Scientists evaluate different antimicrobial metals for use in water filters
Porous ceramic water filters are often coated with colloidal silver, which prevents the growth of microbes trapped in the micro- and nano-scale pores of the filter. Other metals such as copper and zinc have also been shown ...
Nanotechnology / Bio & Medicine
May 24, 2012 |
4 / 5 (1) |
1
Scientists illuminate the ancient history of circumarctic peoples
Two studies led by scientists from the University of Pennsylvania and National Geographic's Genographic Project reveal new information about the migration patterns of the first humans to settle the Americas. The studies identify ...
Other Sciences / Archaeology & Fossils
May 17, 2012 |
5 / 5 (6) |
0
|
Raising the prospects for quantum levitation
More than half-a-century ago, the Dutch theoretical physicist Hendrik Casimir calculated that two mirrors placed facing each other in a vacuum would attract. The mysterious force arises from the energy of virtual particles ...
Apr 18, 2012 |
4.8 / 5 (11) |
1
Chimpanzee ground nests offer new insight into our ancestors descent from the trees
The first study into rarely documented ground-nest building by wild chimpanzees offers new clues about the ancient transition of early hominins from sleeping in trees to sleeping on the ground. While most ...
Apr 16, 2012 |
3.4 / 5 (8) |
2
|
What's in a surname? New study explores what the evolution of names reveals about China
What can surnames tell us about the culture, genetics and history of our society? That is the question being answered by Chinese researchers who have traced the evolution of surnames across China.The research, published in ...
Other Sciences / Social Sciences
Apr 13, 2012 |
4.6 / 5 (5) |
0
|
Archaeologists reconstruct diet of Nelson's Navy with new chemical analysis of excavated bones
Salt beef, sea biscuits and the occasional weevil; the food endured by sailors during the Napoleonic wars is seldom imagined to be appealing. Now a new chemical analysis technique has allowed archaeologists ...
Other Sciences / Archaeology & Fossils
Mar 23, 2012 |
4 / 5 (8) |
0
|
New fossils of oldest American primate
(PhysOrg.com) -- Johns Hopkins researchers have identified the first ankle and toe bone fossils from the earliest North American true primate, which they say suggests that our earliest forerunners may have dwelled or moved ...
Other Sciences / Archaeology & Fossils
Nov 16, 2011 |
4.5 / 5 (2) |
1
|
Continents influenced human migration, spread of technology
How modern-day humans dispersed on the planet and the pace of civilization-changing technologies that accompanied their migrations are enduring mysteries. Scholars believe ancient peoples on Europe and Asia moved primarily ...
Other Sciences / Archaeology & Fossils
Sep 19, 2011 |
4 / 5 (4) |
2
|
What shapes a bone?
Researchers at Johns Hopkins found that use over time and not just genetics informs the structure of jaw bones in human populations. The researchers say these findings may be used to predict the diet of an ancient population, ...
Aug 05, 2011 |
4 / 5 (2) |
4
|
Baseball cheaters can't hide from the laws of physics
Some baseball superstitions are accepted as cold, hard truth. But in the world of physics, the most accepted verities are subject to experimentation.
Jun 28, 2011 |
3.3 / 5 (4) |
3
|
Brain Endocast of Nanjing 1 Homo erectus Reconstructed
Endocasts are the most direct evidence for studying human brain evolution. Endocasts can provide information on brain size, general shape, morphology, and anatomical features of the external surface. Dr. WU ...
Other Sciences / Archaeology & Fossils
Jun 22, 2011 |
5 / 5 (1) |
0
Physicists devise new way to analyze a bloody crime scene
Don't get him wrong: Fred Gittes is, in his words, "extremely squeamish."
May 24, 2011 |
4.7 / 5 (7) |
0
|
Inadequate diet can lead to anemia in postmenopausal women
A new study published in the April 2011 issue of the Journal of the American Dietetic Association indicates that inadequate nutrition is linked to a greater risk of anemia in postmenopausal women.
Mar 25, 2011 |
not rated yet |
0
Sex can be heart attack trigger for couch potatoes
Sex and exercise can trigger heart attacks in older people who don't get much of either, a new analysis finds. The risk is low, but it's a good reminder that slackers should change their exercise habits gradually, especially ...
Mar 22, 2011 |
4 / 5 (4) |
2
To increase physical activity, focus on how, not why
Most people know that exercise is important to maintain and improve health; however, sedentary lifestyles and obesity rates are at all-time highs and have become major national issues. In a new study, University of Missouri ...
Feb 17, 2011 |
5 / 5 (1) |
0
