Minggu, 04 Oktober 2015

ScienceDaily: Top Science News

ScienceDaily: Top Science News

Lead exposure in mothers can affect future generations

Posted: 02 Oct 2015 04:17 PM PDT

Researchers have discovered that mothers with high levels of lead in their blood not only affect the fetal cells of their unborn children, but also their grandchildren.

Self-propelled powder designed to stop severe bleeding

Posted: 02 Oct 2015 11:49 AM PDT

Researchers have created the first self-propelled particles capable of delivering coagulants against the flow of blood to treat severe bleeding, a potentially huge advancement in trauma care.

Signs of ancient mega-tsunami could portend modern hazard

Posted: 02 Oct 2015 11:49 AM PDT

Scientists working off west Africa in the Cape Verde Islands have found evidence that the sudden collapse of a volcano there tens of thousands of years ago generated an ocean tsunami that dwarfed anything ever seen by humans. The researchers say an 800-foot wave engulfed an island more than 30 miles away. The study could revive a simmering controversy over whether sudden giant collapses present a realistic hazard today around volcanic islands, or even along more distant continental coasts.

An accessible approach to making a mini-brain

Posted: 01 Oct 2015 06:38 AM PDT

In a new paper, researchers describe a relatively accessible method for making a working -- though not thinking -- sphere of central nervous system tissue. The advance could provide an inexpensive and easy-to-make 3-D testbed for biomedical research.
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Sabtu, 03 Oktober 2015

ScienceDaily: Top Science News

ScienceDaily: Top Science News

Largest dinosaur population growth study ever shows how Maiasaura lived and died

Posted: 02 Oct 2015 04:17 PM PDT

Research into a vast bone bed in western Montana has yielded the most complete life history of any dinosaur known.

To breathe or to eat: Blue whales forage efficiently to maintain massive body size

Posted: 02 Oct 2015 11:48 AM PDT

As the largest animals to have ever lived on Earth, blue whales maintain their enormous body size through efficient foraging strategies that optimize the energy they gain from the krill they eat, while also conserving oxygen when diving and holding their breath, a new study has found.

Drug used to treat cancer appears to sharpen memory

Posted: 02 Oct 2015 08:35 AM PDT

A drug now being used to treat cancer might make it easier to learn a language, sharpen memory and help those with dementia and Alzheimer's disease by rewiring the brain and keeping neurons alive. New research found that a drug -- RGFP966 -- administered to rats made them more attuned to what they were hearing, able to retain and remember more information, and develop new connections that allowed these memories to be transmitted between brain cells.

Signals from empty space

Posted: 02 Oct 2015 05:23 AM PDT

What are the properties of the vacuum, the absolute nothingness? So far, physicists have assumed that it is impossible to directly access the characteristics of the ground state of empty space. Now, a team of physicists has succeeded in doing just that. They demonstrated a first direct observation of the so-called vacuum fluctuations by using short light pulses while employing highly precise optical measurement techniques.

Are the blueprints for limbs encoded in the snake genome?

Posted: 01 Oct 2015 09:56 AM PDT

The shared patterns of gene expression in the limbs and phallus are generated in part by a common set of noncoding DNA, also called 'elements' or 'enhancers,' which act to control gene expression in both of these structures, argues a new study. These conclusions stemmed from an initial observation that many limb control elements, or limb enhancers, found in limbed animals are still present in snake genomes.

Brain network for observed social threat interactions revealed

Posted: 30 Sep 2015 06:25 AM PDT

Observing one person threatening another is a commonplace event. Now, in new research, scientists have used large-scale neural recording and big data analysis in monkeys to enable a first glimpse of the brain remembering and recalling the memory of such negative social interactions.

Scientists control rats' senses of familiarity, novelty

Posted: 29 Sep 2015 03:12 PM PDT

Brain scientists didn't just study how recognition of familiarity and novelty arise in the mammalian brain, they actually took control, inducing rats to behave as if images they'd seen before were new, and images they had never seen were old.
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