Sunday, 3 February 2013

NRA likens universal checks to gun registry

(AP) ? The National Rifle Association's executive vice president continued to oppose background checks for all gun purchases despite polls indicating that most NRA members don't share his position.

The NRA's Wayne LaPierre tells "Fox News Sunday" that background checks for all gun purchases would lead to a universal registry of gun owners. Critics say such a registry could lead to taxes on guns or to confiscation.

Mark Kelly, a gun owner married to the former Arizona congresswoman who survived a 2011 shooting, asked LaPierre to listen to his members. He said the current system prevented 1.7 million gun purchases since 1999. However, those potential buyers had other options because many gun sales don't require a background check.

Kelly and LaPierre agree more people seeking to buy guns illegally should be prosecuted.

Associated Press

Source: http://hosted2.ap.org/APDEFAULT/89ae8247abe8493fae24405546e9a1aa/Article_2013-02-03-Gun%20Checks/id-b721ce1241a946fcb375bd96e8ef7f47

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APNewsBreak: Feds: Warming imperils wolverines

This undated image provided by the U.S. Fish and Wildlife Service shows a badger. Add the tenacious wolverine, a snow-loving predator sometimes called the "mountain devil," to the list of species the government says is threatened by climate change. Federal wildlife officials on Friday, Feb. 1, 2013, will propose Endangered Species Act protections for the rare animal in the lower 48 states ? a step twice denied under the Bush administration. (AP Photo/U.S. Fish and Wildlife Service)

This undated image provided by the U.S. Fish and Wildlife Service shows a badger. Add the tenacious wolverine, a snow-loving predator sometimes called the "mountain devil," to the list of species the government says is threatened by climate change. Federal wildlife officials on Friday, Feb. 1, 2013, will propose Endangered Species Act protections for the rare animal in the lower 48 states ? a step twice denied under the Bush administration. (AP Photo/U.S. Fish and Wildlife Service)

(AP) ? The tenacious wolverine, a snow-loving carnivore sometimes called the "mountain devil," is being added to the list of species threatened by climate change ? a dubious distinction that puts it in the ranks of the polar bear and several other animals that could see their habitats shrink drastically due to warming temperatures.

Federal wildlife officials on Friday will propose Endangered Species Act protections for the wolverine in the lower 48 states, a step twice denied under the Bush administration.

The Associated Press obtained details of the government's long-awaited ruling on the rare and elusive animal in advance of Friday's announcement.

There are only 250 to 300 wolverines in the contiguous U.S., clustered into small, isolated groups primarily in the Northern Rockies of Montana, Idaho, Wyoming and Washington. Larger populations persist in Alaska and Canada.

Maxing out at 40 pounds and tough enough to stand up to grizzly bears, the animals will be no match for anticipated declines in deep mountain snows that female wolverines need to establish dens and raise their young, scientists said.

Yet because that habitat loss could take decades to unfold, federal wildlife officials said there's still time to bolster the population, including by reintroducing them to the high mountains of Colorado.

Wildlife advocates, who sued to force the government to act on the issue, said they hope the animal's plight will be used by the Obama administration to leverage tighter restrictions on greenhouse gas emissions. As with the polar bear, the government could sidestep that thorny proposition by not addressing threats outside the wolverine's immediate range.

But a special rule proposed by the Fish and Wildlife Service would allow Colorado's wildlife agency to reintroduce an experimental population of the animals that eventually could spill into neighboring portions of New Mexico and Wyoming.

Federal officials also want to shut down wolverine trapping in Montana, the only one of the lower 48 states where the practice is still allowed.

In recent years, Montana wildlife officials have waged court battles against environmentalists who want to stop trapping. If Friday's proposal goes through after a public comment period, wolverine trapping would be banned.

Federal officials said other human activities ? from snowmobiling and skiing to infrastructure development and transportation corridors ? are not significant threats to wolverines and would not be curtailed under Friday's proposal.

Once found throughout the Rocky Mountains and in California's Sierra Nevada mountain range, wolverines were wiped out across the Lower 48 by the 1930s due to unregulated trapping and poisoning campaigns, said Bob Inman, a wolverine researcher with the Wildlife Conservation Society.

In the decades since, they've largely recovered in the Northern Rockies but not in other parts of their historical range, he said.

Associated Press

Source: http://hosted2.ap.org/APDEFAULT/b2f0ca3a594644ee9e50a8ec4ce2d6de/Article_2013-02-01-Wolverine-Climate%20Change/id-5e9080f7d4ae420696f4ca74f534e177

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Unique photography rig captures snowflakes in mid-flight

They say no two snowflakes look the same ? well, scientists at the University of Utah aren't going to take that for granted. They've devised a photography rig that can take detailed photos and measurements of thousands of snowflakes in a single night.

It's called the Multi-Angle Snowflake Camera, and it's just what it sounds like. Three cameras are arrayed around an infrared sensor that detects the presence of a snowflake and tells the cameras to fire. By lighting the snowflake carefully and using a super-short exposure (1/25,000th of a second), they can get tack-sharp images of snowflakes on the fly.

The system is so efficient that it can take tens ofthousands of shots in a single night. While that may be too many to browse through for fun, it's a huge benefit to researchers. Meteorologists only have a partial understanding of snowflakes ? their size, density, shape, fall speed, things like that ? because, naturally enough, they tend to melt before anyone can get a good look at them.

MASC is the project of University of Utah atmospheric scientist Tim Garrett, and the setup has been spun off as a separate company, Fallgatter Technologies. Right now, the company's device is documenting snowflakes at Utah's famous Alta ski area.

Scientists in the 1970s also measured snowflakes, but it was by hand, which must have been extremely delicate (and cold) work ? "I knew the guy who did it and he felt he needed to get glasses because of this project," Garrett told LiveScience.

And if the snowflakes in the pictures don't look much like the symmetrical geometric shapes one usually think of (and which were recently captured in stunning fashion by macro photographer Andrew Osokin), that's because most "snowflakes" are actually clumps made up of smaller flakes that have collided or broken apart.

Achieving a better understanding of snowflakes means a better understanding of snowy weather systems. Alta, for example, can use it to gauge the quality of the snow falling, and the Army is planning to use the device to improve its avalanche prediction techniques.

You can watch a live-updating feed of recent snowflakes from Alta, or check the project's highlight page, showing a few outstanding examples of what the system can capture.

Devin Coldewey is a contributing writer for NBC News Digital. His personal website is coldewey.cc.

Source: http://www.nbcnews.com/technology/futureoftech/unique-photography-rig-captures-snowflakes-mid-flight-1B8219491

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Saturday, 2 February 2013

Placental blood flow can influence malaria during pregnancy

Friday, February 1, 2013

Malaria in pregnancy causes a range of adverse effects, including abortions, stillbirths, premature delivery and low infant birth weight. Many of these effects are thought to derive from a placental inflammatory response resulting from interaction of infected red blood cells with the placental tissue. In a study published in the latest issue of the journal PLOS Pathogen*, a researchers' team led by Carlos Penha-Gon?alves at the Instituto Gulbenkian de Ci?ncia (IGC), Portugal, observed, for the first time, the mouse placental circulation and showed how it can influence the malaria parasite behavior and infection. Their results indicate a higher accumulation of parasites in placental regions with low blood flow, being these areas more prone to an inflammatory response.

In humans, red blood cells infected with the malaria parasite, Plasmodium falciparum, accumulate in the placenta via interaction with a molecule expressed on the placental tissue ? a process called sequestration. In response to this event, placental cells secrete substances that recruit inflammatory cells leading to placental damage and negatively impacting fetal growth. Until now placental circulation has not been linked to the infected red blood cell sequestration. In fact, it is not trivial to investigate this hypothesis in human placenta, due to technical constraints

Luciana Moraes, an investigator of Carlos Penha-Gon?alves laboratory, has provided new insights to this issue by developing an experimental system that allowed the live observation of the blood flow in the mouse placenta. Mating two strains of mice, one of them with cells stained with a colorful marker, Luciana was able to identify the placental tissue (fetus origin). In collaboration with Carlos Tadokoro's laboratory at the IGC, the investigators developed a microscopy technique that allowed the observation of the placenta in a living mouse. Immediately before exposure to the microscope the mouse was injected with a fluorescent substance that labels the blood. With this set-up it was possible to distinguish maternal blood and placental tissue. The results showed for the first time how the circulation occurs in the placenta, and that the blood flows with different speeds in different regions of the placenta.

Next, the investigators infected red blood cells with the malaria parasite Plasmodium berghei, stained with a different color, and observed ? live ? the behavior of the parasite inside the placenta. They observed that in the areas with higher blood flow, the parasite never stops moving and does not interact with the placental tissue. The accumulation of parasite just occurs in areas of low or absence of flow. In these regions, placental macrophages engulf the infected red blood cells to attempt parasite clearance. Their observations also suggest that movements of the placental tissue may control the blood flow.

Luciana Moraes says: "Our results indicate that binding of infected red blood cells to a molecule expressed in the placenta may not be the only mechanism of parasite sequestration. The dynamics of placental circulation may also play an important role, and should be considered when designing therapeutics."

Carlos Penha-Gon?alves adds: "This is the first study done that shows live how placental blood circulation impacts on the local infection by the malaria parasite. It would be interesting and worthwhile to explore if a similar process occurs in the placenta of humans, taking in consideration that microcirculation in human placenta is quite different."

###

Instituto Gulbenkian de Ciencia: http://www.igc.gulbenkian.pt

Thanks to Instituto Gulbenkian de Ciencia for this article.

This press release was posted to serve as a topic for discussion. Please comment below. We try our best to only post press releases that are associated with peer reviewed scientific literature. Critical discussions of the research are appreciated. If you need help finding a link to the original article, please contact us on twitter or via e-mail.

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Source: http://www.labspaces.net/126589/Placental_blood_flow_can_influence_malaria_during_pregnancy

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Engadget Mobile Podcast 168 - 01.31.13

Engadget Mobile Podcast 168 - 01.31.13

Wonder why that incessant honking stopped, and why all those folk are suddenly deeply asleep? That's because BlackBerry 10 finally arrived. So guess what, a large scoop of today's Mobile Podcast is about exactly that. But, because we love you, you get more than one scoop. Listen in to find out what the other flavors are.

Hosts: Myriam Joire (tnkgrl), Brad Molen

Guests: Joseph Volpe, Terrence O'Brien

Producer: James Trew

Music: Tycho - Coastal Brake (Ghostly International)

Hear the podcast

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Source: http://feeds.engadget.com/~r/weblogsinc/engadget/~3/hu4JnjNg44g/

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Friday, 1 February 2013

On 'Warm Bodies' Set, We Become Undead For The Day

MTV News' Christina Garibaldi transforms into a zombie on film's Montreal set.
By Christina Garibaldi


MTV News' Christina Garibaldi and Nicholas Hoult on the set of "Warm Bodies"
Photo: MTV News

Source: http://www.mtv.com/news/articles/1701189/warm-bodies-set-zombies.jhtml

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Finally get your Nexus 4? We'll help get you started

LG Nexus 4

It looks like Google finally is getting a handle on its Nexus 4 supply/retail issues. Its flagship Jelly Bean phone went back on sale this week and boxes should be hitting doorsteps anytime now. For a good many of you, this will be your first time with the Nexus 4. For others, it'll be the first time with any Nexus.

So where to begin? Even if you've had an Android smartphone in the past, a Nexus is both familiar and new, full of options some other smartphones don't have, while at the same time lacking features other manufacturers pack into their own phones. 

Let's take a look at some of the thing new Nexus 4 owners need to know, need to watch out for -- and need to take advantage of.

read more



Source: http://feedproxy.google.com/~r/androidcentral/~3/Zd46Ay-IkC4/story01.htm

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