sexta-feira, 29 de maio de 2015

‘$5 Insanity’: What You Should Know About Flakka



                                         May 21, 2015 -- Some call it “$5 Insanity.”


Flakka, a new designer drug, is surging in popularity. Poison control centers in states including Florida, Alabama, Mississippi, and Texas are responding to an increasing number of incidents involving it.

Here’s what you need to know:

What is flakka?

It’s a man-made stimulant called an alphaPVP. It’s similar to “bath salts,” another dangerous drug that’s grabbed headlines in recent years.

Its off-white, coarse crystals sell for as little as $5 a hit. The name comes from la flaca, a Spanish club-slang term for a sexy, skinny girl.

“It looks like aquarium gravel,” says Alfred Aleguas, PharmD, managing director of the Florida Poison Information Center, Tampa.

How is it used?

People have tried taking it in a number of ways, says Jeffrey Bernstein, MD, medical director of the Florida Poison Information Center, Miami.

Those ways include:

    Snorting
    Mixing with food
    Drinking like a tea
    Pressing into pill form
    Inserting it into the rectum
    Vaping in an e-cigarette
    Injecting

“With injecting, you’re really asking for trouble, because the drug is likely to be cut with … dirt, with talc, who knows what else -- and you’re putting all that in your veins,” Bernstein says.

How does it work on the brain?

Users feel a sense of euphoria, Bernstein says. “It plays with your neurotransmitters, [brain chemicals] like dopamine and serotonin.”

That can lead to a state called excited or agitated delirium in a high that lasts for several hours.

What are the risks?

People who are high on flakka often lose touch with reality, Aleguas says.

“They don’t know what they’re doing, they’re hallucinating, they’re paranoid, they’re aggressive, they’re super-agitated,” he says. “That’s why you see news stories of people running down the street naked, banging on cars in traffic and just crazy, crazy stuff.”

Other health effects that Aleguas and Bernstein often see include:

Another dangerous effect is hyperthermia, or elevated body temperature, which Bernstein says can reach 108 degrees. At that temperature, he says, blood can no longer clot and a person starts to bleed internally.
..

“They bleed and they go into multi-organ failure,” he says. “Lung, liver, kidney, and brain injury can each occur when their temperature stays too high for too long.”

In an emergency room, doctors attempt to cool the person, to calm them. They may also use diazepam, midazolam, or another similar drug to slow a user’s heartbeat.

“We give them symptomatic and supportive care, try to keep them from hurting themselves and hospital staff,” he says.

Who's using flakka?

Bernstein says most users are male and in their teens, 20s, or 30s, although some are older.

“I haven’t seen any regular users,” he says. “It tends to be used sporadically and is associated with concerts and parties and things like that.”

And those users don’t always know what they’re getting, says Bernstein, who gets a call about flakka every day, and more on the weekends. About one-third of calls are from users looking for help, he says, while the others are from emergency personnel caring for users and looking for guidance.

“There’s no quality control on the street, so no one knows for sure what they’re taking,” he says. “Just because they bought something called flakka, no one knows if that’s really what they used, much less what kind of concentration you’re getting. It’s an unknown drug at an unknown dose, and any dose is abuse.”
“They bleed and they go into multi-organ failure,” he says. “Lung, liver, kidney, and brain injury can each occur when their temperature stays too high for too long.”


In an emergency room, doctors attempt to cool the person, to calm them. They may also use diazepam, midazolam, or another similar drug to slow a user’s heartbeat.

“We give them symptomatic and supportive care, try to keep them from hurting themselves and hospital staff,” he says.

Who's using flakka?

Bernstein says most users are male and in their teens, 20s, or 30s, although some are older.

“I haven’t seen any regular users,” he says. “It tends to be used sporadically and is associated with concerts and parties and things like that.”

And those users don’t always know what they’re getting, says Bernstein, who gets a call about flakka every day, and more on the weekends. About one-third of calls are from users looking for help, he says, while the others are from emergency personnel caring for users and looking for guidance.

“There’s no quality control on the street, so no one knows for sure what they’re taking,” he says. “Just because they bought something called flakka, no one knows if that’s really what they used, much less what kind of concentration you’re getting. It’s an unknown drug at an unknown dose, and any dose is abuse.”

                                       source to this post : www.webmd.com

TE Connectivity 3D-prints first functioning motorcycle


The 3D-printed motorcycle, on display



The 3D-printed motorcycle, on display (Credit: TE Connectivity)
Image Gallery (7 images)

Unveiled at Rapid 2015 in Long Beach, California, TE Connectivity’s exercise in 3D printing demonstrates the ability to design a motorcycle on a computer, print it in plastic, add tires and a motor, then take it for a spin. In fact it may take a little more than that to actually end up with a complete functioning motorcycle; nonetheless, the concept is nothing short of exciting.

Considering that fundamental parts such as the frame and wheel bearings are entirely printed in plastic, one would agree that TE’s goal to portray a technology that manufactures load-bearing production parts has been achieved.

Modeled in a Harley-Davidson Softail fashion, the motorcycle measures around 8 ft (2.4 m) long, weighs 250 lb (113.4 kg) and consists of more components than its designers can account for. Its frame, printed after a process of trial and error, can support a total of 400 lb (181 kg) – that would be two adult passengers. Apart from the small electric motor and tires, some other outsourced parts include the braking system, electrical wiring, battery, belt drive, mirrors, sidestand and some bolts.

The highlight is, of course, its fully functioning status. A small 1 hp (750W) electric motor can power a 15 mph (24 km/h) ride for several minutes. Though this may not sound ground-breaking, it doesn’t necessarily need a bigger battery or a stronger engine to make a point as a showbike at a conference on printing, scanning and additive manufacturing. All that matters is that, after some 1,000 work hours and US$25,000, TE Connectivity has come up with a proper motorcycle indeed.

The main load-bearing parts were constructed with Fused Deposition Modeling (FDM) technology, the process of injecting layer upon layer of ABS (acrylonitrile butadiene styrene) plastic enriched with the heat resistant resin Ultem 9085. With this process, TE printed several parts with complex dynamic properties, such as the frame.

The wheel bearings sound tricky to fabricate, especially the rear one that was printed into a single piece with the hub and the drive sprocket. After some testing miles, both bearings reportedly held up against the load they must bear and the heat generated in the process. Equally difficult work has probably been involved in the fabrication of the wheel rims, which have to support real motorcycle tires with fully-inflated tubes.

Some metal parts like the headlight housing were printed in bronze through Direct Metal Laser Sintering (DMLS), where a laser melts the desired shape out of several layers of metal powder.

Apparently this is the second prototype or, more precisely, a rebuild of the first after it suffered some damage during transportation. Thankfully creative minds saw this as an opportunity rather than a calamity, finding the chance to make some improvements on the original design.

Although it seems highly improbable for an electronic connector and sensor manufacturer to build any more motorcycles, TE Connectivity’s achievement highlights some promising prospects. Already several DMLS applications are available to the automotive and aerospace industries though companies like EOS. Stratasys, whose printers worked overtime for this project in TE’s labs, is currently in a partnership with Ducati advising the Italians on developing in-house FDM prototyping. By printing functional prototype engines, Ducati has been able to cut the development time of a new Desmosedici race engine for MotoGP from 28 to only eight months. Benefits from this process are expected to reach production models sooner or later.

TE Connectivity initially thought of printing a model of a motorcycle as a display of sculpting skills. This had already been done, several times over. The idea of a functioning bike was born in the process, probably out of the realization that it could actually be done. After all, the first printed car was unveiled and driven in public just last September.

3D printing technology is advancing by leaps and bounds, having progressed in just a few years from forming simple ornamental plastic parts to generating dynamic structures that function within moving mechanisms. In this sense, this motorcycle that looks like a child’s toy may well prove to be a landmark product.

Sources: TE Connectivity, 3DPrint.com

5 Things the USA Needs to Know about China's New Military Strategy




On Tuesday, the Chinese Ministry of Defense issued its first policy document in two years, a white paper titled, “Chinese Military Strategy.” The document, released amid ongoing Chinese island reclamation and increasingly hostile warnings to U.S. Navy aviation assets operating in the South China Sea, outlines how the Chinese armed forces are expected to support Beijing’s geopolitical objectives.
In the white paper, a copy of which can be read online in English or Chinese, China vows to use the armed forces to create a “favorable strategic posture with more emphasis on the employment of military forces and means,” in order to guarantee the country’s peaceful development. The document also less-than-subtly indicts the United States (and other neighbors) for taking “provocative actions” surrounding Chinese reefs and islands.
Five major elements of the strategy worthy of American attention stand out:

1. Preserving the role of the Communist Party remains the People Liberation Army’s (PLA) number one priority:
The PLA’s most important task remains maintaining the power and authority of the Communist Party of China (CPC). The white paper makes it perfectly clear that the PLA first exists to protect the CPC and the regime of Chinese President Xi Jinping. Notions of defending the Chinese homeland or the people of China take a back seat to preserving the legitimacy and efficacy of the CPC. After all, the PLA is an arm of the CPC—not the Chinese state—and thus the Chinese armed forces are tasked solely with defending the Party rather than the well-being of 1.3 billion Chinese people. Should economic, demographic, or social issues threaten CPC legitimacy, Xi has the option of utilizing PLA forces to quell political opposition and domestic unrest.

2. China is building a military to fight and win wars:
The Chinese military is focused on ensuring recent investments in the PLA translate into genuine warfighting capability. The white paper clearly states that the PLA intends to, “endeavor to seize the strategic initiative in military struggle, proactively plan for military struggle in all directions and domains, and grasp the opportunities to accelerate military building, reform and development.” The Chinese military desperately wants a military capable of going on the offensive and defeating any challengers. The white paper gives particular emphasis to Chinese naval ambitions of becoming a blue water force. A Chinese blue water navy will operate regularly beyond the “first island chain” separating the South China, East China, and Yellow Seas from the Pacific, to protect Chinese strategic interests.
For officials in Beijing, a blue water navy is a modernized force capable of defending territorial claims, conducting global operations, and perhaps most significantly,constituting a “real challenge” to the U.S. Navy. While the desire for a capable blue water navy is not surprising, it serves as a warning to other nations in the region, a warning that is unlikely to ease existing tensions with neighboring Japan, South Korea, and the Philippines. A Chinese military that is built to fight and win wars is also a military that could show little reluctance in using force to assert sovereignty.

3. The PLA appears focused on perceived threats from the United States, Japan, Taiwan, South China Sea littoral states and the Koreas:
The white paper and its reworked strategic guidelines reflect a perception of “new” national security issues: the U.S. rebalance to Asia; Japanese revisions to military and security policy; external countries meddling in Chinese territorial disputes in the South China Sea and elsewhere; instability and uncertainty on the Korean Peninsula; and independence movements simmering in both Taiwan and Tibet. Beijing’s security interests now lie farther from home, and across regions requiring an active military presence. The PLA leadership is seeking to equip and train its forces to meet new perceptions of the Chinese security environment. In doing so, the latest white paper makes certain China has no qualms in upholding a military strategy of “active defense,” or what the document breaks down into a combination of strategic defense, self-defense, operational and tactical offense, and a willingness to counterattack.

4. The Chinese military knows it has some big organizational hurdles to overcome:  
The white paper examines necessary measures to overhaul the daily operations and internal structure of the PLA. These include: giving continued priority to ideological and political work, modernizing logistics infrastructure, establishing a military law system, and integrating military and civilian support efforts. Specifically at the domestic level, the white paper stresses the need to improve national defense education, boost public awareness of the Chinese military, and rethink processes for bringing on PLA enlistees. These initiatives all appear to be aimed at tackling existing weaknesses in organizational and human capital to yield a stronger military force.

5. The good news: China is interested in military-to-military contacts and relationships and the white paper is a sign of increased transparency:

The white paper states that, “China’s armed forces will continue to develop military-to-military relations that are non-aligned, non-confrontational and not directed against any third party.” More specifically, the white paper expresses Chinese armed forces’ interest in fostering a new model of military relationship with U.S. armed forces that would include defense dialogues, exchanges and other measures aimed at strengthening mutual trust, preventing, unintended escalation, and mitigating crises. Military-to-military contact and engagement with China are beneficial to the United States because such initiatives can help avoid miscalculation and improve the U.S. ability to understand Chinese intent. Engagement also establishes a foundation for future negotiation and de-escalation if crises develop. The other “good news” in the white paper is its transparency. The white paper is a clear statement of Beijing’s military intent; after reviewing the white paper, the international community is left with a better understanding of Chinese plans for their military.
A clear-eyed reading of China’s new white paper should temper naïveté in thinking Beijing seeks to become a peaceful, responsible stakeholder in the global order. Aside from an interest in deepening existing mil-mil relationships, the new strategic guidelines leave little room to doubt Chinese ambitions of transforming into a modern, maritime power capable of challenging the United States in the Asia-Pacific theater and elsewhere in the world. The white paper signals that the Chinese military intends to project power beyond its immediate periphery, into the open ocean, in pursuit of a “national rejuvenation” aimed at countering what Chinese leaders see as U.S.-led efforts to check China’s rise. The document marks a notable transition from a Chinese focus on economic development—and a hands-off approach to global affairs—to a reorientation that not only accounts for the global scope of Chinese interests, but also suggests a national tenacity to defend Chinese interests through the use of force.
China’s white paper sends some disturbing messages that China is committed to “achieving slow motion regional hegemony.” It appears that China has both a vision and a plan to extend the PLA’s global reach—now it is up to the United States and its allies and friends in the Pacific to engage with China while working to devise an adequate response.
This piece first appeared in CFR’s blog Defense in Depth here.

source of this post - www.nationalinterest.org