Biosciencia News
1.3K views | +0 today
Follow
Biosciencia News
Everyday news through scientist eyes.
www.biosciencia.com
Curated by Biosciencia
Your new post is loading...
Your new post is loading...
Scooped by Biosciencia
Scoop.it!

Bacteria evolve resistance more quickly when stronger antibiotics are used

Bacteria evolve resistance more quickly when stronger antibiotics are used | Biosciencia News | Scoop.it
New scientific research published today in the journal PLoS Biology shows that bacteria can evolve resistance more quickly when stronger antibiotics are used.
more...
No comment yet.
Scooped by Biosciencia
Scoop.it!

Investigators seek trigger for Texas blast

Investigators seek trigger for Texas blast | Biosciencia News | Scoop.it
A huge cloud of ammonia vented from the fertiliser plant in West, Texas, is one theory for what caused last week's fatal explosion    
more...
No comment yet.
Scooped by Biosciencia
Scoop.it!

Kepler spies water worlds

Kepler spies water worlds | Biosciencia News | Scoop.it
Pair of exoplanets sit in habitable zone of star far beyond the Solar System.
Nature News doi: 10.1038/nature.2013.12825
more...
No comment yet.
Rescooped by Biosciencia from Amazing Science
Scoop.it!

A Wireless Micro LED Device Controls Mouse Behavior

A Wireless Micro LED Device Controls Mouse Behavior | Biosciencia News | Scoop.it
Mice tap into their own neural reward circuits with the help of a new optogenetics device.

 

A microscopic light-emitting diode device that controls the activity of neurons has given researchers wireless control over animal behavior. The tiny device, tested in mice, causes less damage than other methods used to deliver light into the brain, report researchers in Thursday’s issue ofScience, and it does not tether mice to a light source, enabling scientists to study behaviors more naturally than is normally possible.

 

Many groups of neuroscientists have turned to light-based control of neurons to study the neuronal basis of behavior. To control the brain cells, researchers use optogenetics, a method for genetically modifying neurons that allows them to be activated or silenced with flashes of light.

 

When Michael Bruchas, a neuroscientist at Washington University in St. Louis, began using optogenetics to study stress-related behaviors in mice, he was frustrated by the limits that tethered devices put on studies involving complex environments or multiple mice. So he teamed up with John Rogers, a materials scientist at the University of Illinois at Urbana-Champaign, and others, to develop a “device that has a very small ultrathin profile, is noninvasive, and can be controlled wirelessly,” says Bruchas. “It gives you more power to study different circuits wired for specific behaviors. Animals can be in their home cage or interacting with another animal or running on a wheel.”

 

The flexible device is roughly one-fifth the width of a human hair and can be implanted deep inside the brain with the help of a microneedle. A biodegradable adhesive holds the micro-LED implant onto the needle, but that grip is lost as the silk-based adhesive dissolves within a matter of minutes. The device is then left in the brain when the needle is removed. A wire even thinner than the device connects the micro-LED to electronics, including a wireless transmitter, that sit on top of the mouse’s head. Altogether, the setup weighs less than one gram, says Bruchas (a mouse weighs about 30 grams).

 This kind of device could eventually be used to control brain activity in an automated fashion: communicating with neurons though flashes of light in response to chemical, temperature, or electrical changes in the brain. “The ability to integrate sensors as well as LEDs could enable ‘closed-loop’ control of brain functions, which could be of use for applications in which information must be both observed and read,” says MIT’s Ed Boyden, one of the co-inventors of optogenetics.


Via Dr. Stefan Gruenwald
more...
No comment yet.
Scooped by Biosciencia
Scoop.it!

Autism Model in Mice Linked With Genetics

Autism Model in Mice Linked With Genetics | Biosciencia News | Scoop.it
 
For the first time, researchers have linked autism in a mouse model of the disease with abnormalities in specific regions of the animals’ chromosomes.
more...
No comment yet.
Scooped by Biosciencia
Scoop.it!

Obesity Can Lead to Vitamin D Deficiency

Obesity Can Lead to Vitamin D Deficiency | Biosciencia News | Scoop.it
According to scientists reporting in the journal PLoS Medicine, obesity can lead to a lack of vitamin D circulating in the human body.
more...
No comment yet.
Scooped by Biosciencia
Scoop.it!

Last tests for solar plane before coast-to-coast flight

Last tests for solar plane before coast-to-coast flight | Biosciencia News | Scoop.it
The last few test flights this week mean Solar Impulse is nearly ready to begin its attempt to fly across the US under sunshine power alone    
more...
No comment yet.
Scooped by Biosciencia
Scoop.it!

Horsehead Nebula: Spectacular New Image from Hubble

Horsehead Nebula: Spectacular New Image from Hubble | Biosciencia News | Scoop.it
Astronomers using NASA’s Hubble Space Telescope have obtained a remarkable new view of the Horsehead Nebula in infrared light. The Horsehead Nebula, also known as Barnard 33, is located about 1,500 light years from Earth in the constellation Orion.
more...
No comment yet.
Scooped by Biosciencia
Scoop.it!

A different view of cancer cells

A different view of cancer cells | Biosciencia News | Scoop.it
Most cancer deaths are caused by metastatic tumors, which break free from the original cancer site and spread throughout the body. For that to happen, cancer cells must undergo many genetic and physical changes.
more...
No comment yet.
Scooped by Biosciencia
Scoop.it!

Collaboration aims to harness the energy of 2,000 suns

Collaboration aims to harness the energy of 2,000 suns | Biosciencia News | Scoop.it
Today on Earth Day, scientists have announced a collaboration to develop an affordable photovoltaic system capable of concentrating, on average, the power of 2,000 suns, with an efficiency that can collect 80 percent of the incoming radiation and...
more...
No comment yet.
Rescooped by Biosciencia from Amazing Science
Scoop.it!

Fukushima Radiation Significantly Lower Than Expected, Study Says

Fukushima Radiation Significantly Lower Than Expected, Study Says | Biosciencia News | Scoop.it

A new study on the radiation levels in Japanese locals after the Fukushima Daiichi nuclear power plant incident states that Cesium levels in the population are much lower than expected.

 

Based on studies from the Chernobyl incident in Russia in 1986, researchers anticipated that the levels of Cesium in those exposed to radiation after the meltdown at the Fukushima Daiichi campus to be equivalent with the deposition density, or the activity of a radioactive molecules in an area of ground, which is in Fukushima is reported measured at 2 millisieverts (mSv).

 

"Findings suggest that the level of internal radiation exposure brought about by pollution from the soil within the Fukushima Prefecture is much less than originally believed. The amount is so negligible that it is difficult to imagine there being any risk to the health," said Ryugo Hayano, a professor at Tokyo University's Science Research Department.

 

Fear of radiation exposure was rampant in many parts of Japan in the days and weeks after the Fukushima incident, which occurred March 11, 2011 after the largest earthquake in Japan's recorded history unleashed a tsunami that ravaged northeastern Japan's coastal communities and overcame the Daiichi reactors, causing the worst nuclear accident since Chernobyl.

 

Because more than two years have passed since the Fukushima incident, now the greatest risk from ongoing exposure to radioactive Cesium is through eating food grown in contaminated soil.

 

But of more than 100,000 people screened with whole-body scanners, the study showed 99.9 percent of them with a committed effective dose (CED) of less than 1 mSv. The safety standard and recommended maximum for artificial radiation exposure is 1 mSv.


Via Dr. Stefan Gruenwald
more...
No comment yet.
Scooped by Biosciencia
Scoop.it!

Nanoparticle Disguised as a Blood Cell Fights Bacterial Infection

Nanoparticle Disguised as a Blood Cell Fights Bacterial Infection | Biosciencia News | Scoop.it
From www.technologyreview.com
A nanoparticle wrapped in a red blood cell membrane can remove toxins from the body and could be used to fight bacterial infections, according to research published today in Nature Nanotechnology.
more...
No comment yet.
Scooped by Biosciencia
Scoop.it!

Microbatteries: The most powerful batteries are only a few millimeters in size

Microbatteries: The most powerful batteries are only a few millimeters in size | Biosciencia News | Scoop.it
Image courtesy of the Beckman Institute for Advanced Science and Technology
From news.illinois.edu
Though they be but little, they are fierce.
more...
No comment yet.
Scooped by Biosciencia
Scoop.it!

'Flipperbot': Sea turtles inspire beach-walking robot (w/ video)

'Flipperbot': Sea turtles inspire beach-walking robot (w/ video) | Biosciencia News | Scoop.it
(Phys.org) —For sea turtle hatchlings struggling to reach the ocean, success may depend on having flexible wrists that allow them to move without disturbing too much sand.
more...
No comment yet.
Scooped by Biosciencia
Scoop.it!

Animal-rights activists wreak havoc in Milan laboratory

Animal-rights activists wreak havoc in Milan laboratory | Biosciencia News | Scoop.it
University says loss of animals and lab records may ruin years of work on psychiatric diseases.
Nature News doi: 10.1038/nature.2013.12847
more...
No comment yet.
Scooped by Biosciencia
Scoop.it!

Climate zones will shift faster as world warms

Climate zones will shift faster as world warms | Biosciencia News | Scoop.it
Accelerating ecosystem change may raise extinction risk.
Nature News doi: 10.1038/nature.2013.12838
more...
No comment yet.
Scooped by Biosciencia
Scoop.it!

Brain Development Is Guided by Junk DNA that Isn’t Really Junk

Brain Development Is Guided by Junk DNA that Isn’t Really Junk | Biosciencia News | Scoop.it
Specific DNA once dismissed as junk plays an important role in brain development and might be involved in several devastating neurological diseases, UCSF scientists have found.
more...
No comment yet.
Scooped by Biosciencia
Scoop.it!

Genetic Markers Linked To the Development of Lymphedema in Breast Cancer Survivors

Genetic Markers Linked To the Development of Lymphedema in Breast Cancer Survivors | Biosciencia News | Scoop.it
A new UCSF study has found a clear association between certain genes and the development of lymphedema, a painful and chronic condition that often occurs after breast cancer surgery and some other cancer treatments.
more...
No comment yet.
Scooped by Biosciencia
Scoop.it!

Nitrogen has key role in estimating CO2 emissions from land use change

Nitrogen has key role in estimating CO2 emissions from land use change | Biosciencia News | Scoop.it
A new global-scale modeling study that takes into account nitrogen a key nutrient for plants estimates that carbon emissions from human activities on land were 40 percent higher in the 1990s than in studies that did not account for nitrogen.
more...
No comment yet.
Scooped by Biosciencia
Scoop.it!

On 10 Breakthrough Technologies - MIT Technology Review

On 10 Breakthrough Technologies - MIT Technology Review | Biosciencia News | Scoop.it
MIT Technology Review
On 10 Breakthrough Technologies
MIT Technology Review
(This year, for the first time, we are calling them “10 breakthrough technologies” instead of “emerging technologies.” Why?
more...
No comment yet.
Scooped by Biosciencia
Scoop.it!

Nanowires grown on graphene have surprising structure

Nanowires grown on graphene have surprising structure | Biosciencia News | Scoop.it
When a team of University of Illinois engineers set out to grow nanowires of a compound semiconductor on top of a sheet of graphene, they did not expect to discover a new paradigm of epitaxy.
more...
No comment yet.
Scooped by Biosciencia
Scoop.it!

Using Black Holes to Measure the Universe's Rate of Expansion

Prof. Netzer (Tel Aviv Univesity), along with Jian-Min Wang, Pu Du and Chen Hu of the Institute of High Energy Physics of the Chinese Academy of Sciences and Dr.
more...
No comment yet.
Rescooped by Biosciencia from Science News
Scoop.it!

These Brain-Hugging Transistors Will Make Real-Life Cyborgs

These Brain-Hugging Transistors Will Make Real-Life Cyborgs | Biosciencia News | Scoop.it
Transistors were one of the most revolutionary developments in modern computing. And that was without directly implanting them in our brains. Now, the first microscopic organic transistor arrays promise to let us do just that.

Via Sakis Koukouvis
more...
No comment yet.
Scooped by Biosciencia
Scoop.it!

How to find Zombies In NYC ?

How to find Zombies In NYC ? | Biosciencia News | Scoop.it
The firts question is : What is a zombi?
You can find a first funny and Quebec explanation on this video (for french speaking people only)!
Ok, it sounds quite bizarre. Why trying to explain what is a zombie on a scientific way?
more...
No comment yet.
Scooped by Biosciencia
Scoop.it!

Parasite Inspires Surgical Patch

Parasite Inspires Surgical Patch | Biosciencia News | Scoop.it
Credit: The Karp Laboratory/Brigham and Women’s Hospital From news.sciencemag.org By mimicking a technique used by an intestinal parasite of fish, researchers have developed a flexible patch studded with microneedles that holds skin grafts in place...
more...
No comment yet.