Tuesday, November 27, 2012

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You're Only As Old As You Feel | Health X Pert Articles-Health care ...

WebMD Medical News By Jennifer Warner Reviewed by Louise Chang, MD Nov. 20, 2012 ? The old saying??You?re only as old as you feel? has new life, backed up by a new study. Researchers found older people with positive views on aging were 44% more likely to recover fully after severe disability than those with negative views on aging. People with positive attitudes about aging also had a slower decline in their ability to do daily tasks such as?dressing and bathing. ?It may be something worth considering that might help people?s recovery,? says researcher Becca Levy, PhD, associate professor at the Yale School of Public Health. Upside to a Positive Attitude Until now, experts say, most of the research on attitudes about aging and health has looked at the health risks and losses linked to a negative outlook. But this study suggests there may be tangible health benefits to having a more positive view about aging. ?It?s not just about reducing the losses associated with aging, but also about making gains in one?s health or disability status and regaining what might have been lost,? says Tara L. Stewart, PhD, assistant professor of psychology at Idaho State University. ?These people with positive stereotypes about aging experienced health gains and better recovery, not just a reduction of health losses,? Stewart says. Views on Aging Affect Recovery In the study, researchers periodically surveyed 598 people aged 70 or older about their views on aging over a period of about 11 years.? None were disabled when the study started, but later on, all of them had at least one month when they needed help with daily tasks such as bathing, dressing, or walking. In some cases, their disability was severe; other cases were mild. They were asked for the first five words or phrases that come to mind when they think of old people. The researchers rated their responses on a five-point scale as most positive, like ?spry,? or most negative, like ?decrepit.? The results appear in the Journal of the American Medical Association. The findings were strongest for older people with the most severe types of disability. They were 44% more likely to fully recover from severe disability than those with negative age stereotypes. Also, older people with positive views on aging were more likely to progress from severe disability to mild disability or mild disability to no disability. Older people with positive age stereotypes also had a slower rate of decline in their ability to perform daily activities as they got older. Of course, many factors affect whether or to what extent a person recovers from disability. This study does not prove that a positive attitude about aging made a difference. But it showed the strongest relationship between age stereotypes and recovery was among those people with positive age stereotypes and the most severe type of disability. Attitude and Aging Positive views on aging may help people bounce back from disability and promote independent living in a variety of ways, the researchers say. One of the biggest ways may be psychological. Stewart says a person?s attitudes about aging say a lot about how much they believe their health is under their own control. For example, people who view seniors as spry rather than decrepit may be more likely to live a healthy lifestyle, keep up on their doctor appointments, and take their medicines as prescribed. ?Holding a negative stereotype about aging, like believing illness is caused by aging, would cause them to feel less in control and responsible for their health and lead to different sorts of strategies,? Stewart says. Levy also says there may be a physiological side to it. ?People who have more positive age stereotypes tend to have the advantage in experiencing stress ,? says Levy. ?They tend to suffer from less cardiovascular stress.? Researchers say the next step is to look at how people can upgrade their attitudes about aging. ?We need to emphasize some of the positive as we get older instead of focusing on the developmental losses that may happen with aging,? Stewart says. SOURCES:Levy, B. Journal of the American Medical Association, Nov. 21, 2012.News release, American Medical Association.Becca Levy, PhD, associate professor, Yale School of Public Health.Tara L. Stewart, PhD, assistant professor, department of psychology, Idaho State University. ? 2012 WebMD, LLC. All rights reserved. ______________________________________________________ More from WebMD Insomnia, Anxiety Drugs May Raise Dementia Risk Does Air Pollution Hurt Memory of Older Adults? Maintaining Good Health May Reduce Dementia Risk Sepsis Linked to Dementia in Elderly ______________________________________________________

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You?re Only As Old As You Feel

Source: http://healthxpert.org/you%E2%80%99re-only-as-old-as-you-feel/

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All clear at Miami airport after earlier evacuation

1 hr.

Miami-Dade Police said they were questioning a man who sparked an evacuation at a Miami International Airport concourse after he said he had dynamite in his luggage as he checked in the bag on Monday.

After an evacuation which lasted more than one hour, operations were back to normal at Concourse J, part of which had been closed. Passengers were evacuated to the curbside while the bomb squad was called in.

The concourse services international and domestic flights.

More stories from NBCMiami.com:

?

Source: http://www.nbcnews.com/travel/part-miami-airport-evacuated-over-suspicious-item-1C7227560

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Any cardiologists out there or those with experience?

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Monday, November 26, 2012

Flexible, low-voltage circuits made using nanocrystals

ScienceDaily (Nov. 26, 2012) ? Electronic circuits are typically integrated in rigid silicon wafers, but flexibility opens up a wide range of applications. In a world where electronics are becoming more pervasive, flexibility is a highly desirable trait, but finding materials with the right mix of performance and manufacturing cost remains a challenge.

Now a team of researchers from the University of Pennsylvania has shown that nanoscale particles, or nanocrystals, of the semiconductor cadmium selenide can be "printed" or "coated" on flexible plastics to form high-performance electronics.

The research was led by David Kim, a doctoral student in the Department of Materials Science and Engineering in Penn's School of Engineering and Applied Science; Yuming Lai, a doctoral student in the Engineering School's Department of Electrical and Systems Engineering; and professor Cherie Kagan, who has appointments in both departments as well as in the School of Arts and Sciences' Department of Chemistry. Benjamin Diroll, a doctoral student in chemistry, and Penn Integrates Knowledge Professor Christopher Murray of Materials Science and of Chemistry also collaborated on the research.

Their work was published in the journal Nature Communications.

"We have a performance benchmark in amorphous silicon, which is the material that runs the display in your laptop, among other devices," Kagan said. "Here, we show that these cadmium selenide nanocrystal devices can move electrons 22 times faster than in amorphous silicon."

Besides speed, another advantage cadmium selenide nanocrystals have over amorphous silicon is the temperature at which they are deposited. Whereas amorphous silicon uses a process that operates at several hundred degrees, cadmium selenide nanocrystals can be deposited at room temperature and annealed at mild temperatures, opening up the possibility of using more flexible plastic foundations.

Another innovation that allowed the researchers to use flexible plastic was their choice of ligands, the chemical chains that extend from the nanocrystals' surfaces and helps facilitate conductivity as they are packed together into a film.

"There have been a lot of electron transport studies on cadmium selenide, but until recently we haven't been able to get good performance out of them," Kim said. "The new aspect of our research was that we used ligands that we can translate very easily onto the flexible plastic; other ligands are so caustic that the plastic actually melts."

Because the nanocrystals are dispersed in an ink-like liquid, multiple types of deposition techniques can be used to make circuits. In their study, the researchers used spincoating, where centrifugal force pulls a thin layer of the solution over a surface, but the nanocrystals could be applied through dipping, spraying or ink-jet printing as well.

On a flexible plastic sheet a bottom layer of electrodes was patterned using a shadow mask -- essentially a stencil -- to mark off one level of the circuit. The researchers then used the stencil to define small regions of conducting gold to make the electrical connections to upper levels that would form the circuit. An insulating aluminum oxide layer was introduced and a 30-nanometer layer of nanocrystals was coated from solution. Finally, electrodes on the top level were deposited through shadow masks to ultimately form the circuits.

"The more complex circuits are like buildings with multiple floors," Kagan said. "The gold acts like staircases that the electrons can use to travel between those floors."

Using this process, the researchers built three kinds of circuits to test the nanocrystals performance for circuit applications: an inverter, an amplifier and a ring oscillator.

"An inverter is the fundamental building block for more complex circuits," Lai said. "We can also show amplifiers, which amplify the signal amplitude in analog circuits, and ring oscillators, where 'on' and 'off' signals are properly propagating over multiple stages in digital circuits."

"And all of these circuits operate with a couple of volts," Kagan said. "If you want electronics for portable devices that are going to work with batteries, they have to operate at low voltage or they won't be useful."

With the combination of flexibility, relatively simple fabrication processes and low power requirements, these cadmium selenide nanocrystal circuits could pave the way for new kinds of devices and pervasive sensors, which could have biomedical or security applications.

"This research also opens up the possibility of using other kinds of nanocrystals, as we've shown the materials aspect is not a limitation any more," Kim said.

The research was supported by the U.S. Department of Energy and the National Science Foundation.

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The above story is reprinted from materials provided by University of Pennsylvania.

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Journal Reference:

  1. David K. Kim, Yuming Lai, Benjamin T. Diroll, Christopher B. Murray, Cherie R. Kagan. Flexible and low-voltage integrated circuits constructed from high-performance nanocrystal transistors. Nature Communications, 2012; 3: 1216 DOI: 10.1038/ncomms2218

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Source: http://feeds.sciencedaily.com/~r/sciencedaily/top_news/top_technology/~3/wKRa4PhyUKg/121126143001.htm

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Red Dawn: Occupied USA

Red Dawn: Occupied USA

In 2013 a new Warsaw pact is formed and the US is invaded by a coalition of North Koreans, Chinese, Russian, and a mesh of other Asian soldiers as well as some Islamic mercenaries from Pakistan, Iran and other anti-American countries.

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This topic is an Out Of Character part of the roleplay, ?Red Dawn: Occupied USA?. Anything posted here will also show up there.

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Forum for completely Out of Character (OOC) discussion, based around whatever is happening In Character (IC). Discuss plans, storylines, and events; Recruit for your roleplaying game, or find a GM for your playergroup.


Dropping a line because the Polish in me would be pissed if I let this go:

"Warsaw" is one word.

Good luck with your roleplay.

How long will he keep on fighting? How long will his pain last? Maybe only the X-Buster on his hand knows for sure...

User avatar
qbsuperstar03
Member for 4 years


Haha thanks i'll change that.

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Reaper2707
Member for 0 years



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#10: Sony MEXBT4100P Car Receiver with Bluetooth Receiver ...

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