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Showing posts with label magnetic jewlery clasp articles. Show all posts
Showing posts with label magnetic jewlery clasp articles. Show all posts

Thursday

Magnetic jewery clasp in BART station

About once a week, Jerica Montez has to make an unwanted appointment with a BART station agent—when she’s trying to exit the fare gate and her ticket is rejected with a stern “See Agent.” The 19-year-old SF State interior design student can’t seem to avoid it, nor can many commuters. Each day, BART officials receive an average of 250 complaints for demagnetized fare tickets, and now they are doing something about it.

Many SF State students rely on BART and the school’s free shuttle service, which departs from the Daly City station, to get them to classes. Commuters should notice improvements by this fall, said agency spokesman Linton Johnson. It’s all about having as few headaches as possible. A happy customer is priceless. Riding the BART should be relaxing and we are trying to make it as stress-free as possible.

High coercivity magnetic strips—the kind used on most credit cards—will be less prone to being erased as the low coercivity ones used on current tickets. Users have found that they can be damaged with a simple contact to a magnetic jewelry clasp on a purse or when pinned against an MP3 player or cell phone in a pocket.

“At least once a week it happens,” Montez said. “My wallet has a magnet on it—you think I would learn, but I don’t.”

“It used to happen to me all the time, and then I stopped putting [the ticket] in my pocket with my cell phone,” said Oliver Scotting, 23, a graduate student in biology at SF State.

While Scotting figured out the cause of his ticket being demagnetized, for some riders a demagnetized ticket remains an awkward surprise.

“I don’t even know how it happened,” said Virak Yin, 26, grad student at SF State, who was surprised last Thursday when his ticket was rejected by the gate machine for the first time. “They were cool about it, took it and fixed it.”

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Saturday

Magnetic Alloy With Swiss Cheese Structure Morphs Shape-Magnetic Jewelry Clasp

Magnetic Jewelry Clasp




Voids of space between thin, curvy struts of
metal alloy give the alloy magnetic shape memory.

David Dunand, James N. and Margie M. Krebs Professor of Materials Science and Engineering in Northwestern University's McCormick School of Engineering and Applied Science, has teamed up with Boise State University professor Peter Müllner and McCormick postdoctoral fellow Vee Boonyongmaneerat to create a foam from a nickel-manganese-gallium alloy (Ni-Mn-Ga) that changes shape when exposed to a magnetic field. The new foam could translate to smaller, lighter pumps and more aerodynamic airplane wings.

When exposed to a magnetic field, a single crystal of the Ni-Mn-Ga alloy will deform approximately 10 percent. The alloy then retains its new shape when the field is turned off but returns to its original shape if the field is rotated 90 degrees. That's what scientists call “magnetic shape-memory.”

But most materials are “polycrystals,” consisting of a collection of randomly oriented crystals, making a patchwork similar to marble. In polycrystals each individual grain moves in a different direction when exposed to the magnetic field, and the overall deformation is cancelled such that the alloy ends up not moving at all.

Single crystals are extremely expensive and time-consuming to make — just like single-crystalline gems — so when Dunand and Müllner met at a conference in 2006, they decided to combine Müllner's knowledge of magnetic shape-memory materials with Dunand's knowledge of metallic foam. They hoped a polycrystalline foam of the alloy, which looks like a sponge, would allow more space for individual crystals to move, retaining properties similar to a single crystal.

That just left the burning question: Would the foam change shape?

To find out, Dunand shipped the foam to Boise State where Müllner and his student Marcus Chmielus tested the foam in a magnetic field rotation. Though it didn't move the 10 percent that a single crystal would, it did move 0.12 percent.

”It was very exciting because we went from zero to an actual value, albeit small, but comparable to the best competitor,” Dunand said.

That competitor is Terfenol D, another material that also moves magnetically under a different mechanism. That material, which has been around for a long time and is expensive to make, is already maxed out at 0.12 percent deformation.

Dunand thinks that once the Ni-Mn-Ga foam is optimized — through casting it differently or perhaps heat-treating it differently — it will provide better results. He believes that such a foam could be a lighter, cheaper replacement for Terfenol D applications like sonar, actuators and magnetomechanical sensors. Dunand also believes the foam could replace applications that require small, rapid movement, like very small motors that don't have room for normal motor components like rotors, stators, gears and shafts, possibly for biomedical applications.

The material could have even bigger applications. Dunand said it's possible that the foam could eventually be used to control slight changes in the shape of airplane wings to make them more aerodynamic based on the speed of the aircraft.

“The dream or the goal is to be able to change, ever so slightly, the aerodynamics of the flow of air to make the flight more efficient at all speeds,” he said.

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Friday

Magnetic jewelry clasp therapy really works

Magnetic Jewelry Clasp


Can placing magnets on your skin cure aches, pains, and sprains? So-called "magnetic jewelry clasp therapy" is often considered to be a hoax under the guise of "alternative medicine." But now a study by biomedical engineering researchers at the University of Virginia has found that magnets may really provide biological healing. The scientific evidence for the controversial therapy may lead to mainstream use of magnets for athletes, the elderly, and others.

"Magnetic jewelry clasp arm wrap" is sold by ActiveMobility.com"Magnetic jewelry clasp arm wrap" is sold by ActiveMobility.com.

Thomas Skalak, professor and chair of biomedical engineering at UV, has been studying the effectiveness of magnetic jewelry clasp therapy for several years. Skalak is an expert in microcirculation research--the study of blood flow through tiny blood vessels. With this background, he began investigating whether or not magnets increase blood flow - one of the major claims made by companies that sell magnets.

Until now, many critics of magnetic jewelry clasp therapy have believed that the magnetic jewelry clasp field generated by medical magnets could only reach a few millimeters into the skin - not enough to affect the blood vessels. People who claimed to have felt better after using magnetic jewelry clasp field were thought to be experiencing a placebo effect. Nevertheless, the US magnetic jewelry clasp therapy industry sells more than $300 million per year of "pseudoscience" magnets.

Now, Skalak and his team have shown in the peer-reviewed American Journal of Physiology that a magnetic jewelry clasp field - created by magnets with a strength of 70 milliTesla, or about 10 times the strength of refrigerator magnets - could cause blood vessels with dilated walls to relax and constrict, which increases blood flow through the vessels.

Increasing blood flow could be used to reduce the swelling of muscles, ligaments, and other soft tissues, Skalak explains. Swelling is a very common side effect of minor and major injuries, such as muscle bruising and joint sprains.

"If an injury doesn't swell, it will heal faster--and the person will experience less pain and better mobility," says Skalak. If used immediately after an injury, the magnets could reduce the swelling of sprains, bumps, and bruises much like ice packs and compression are used - but with more beneficial results.

The researchers' experiment demonstrated the effectiveness of the magnets on rats. They first treated the hind paws of the rats with an inflammatory agent that caused tissue swelling, and then applied magnets to find that the swelling subsided. The team also took quantitative measurements of the rats' blood vessel diameter before and after the magnetic jewelry clasp therapy to confirm the results.

Skalak and his team are supported by a five-year, $875,000 grant from the National Institute of Health's National Center for Complementary and Alternative Medicine. The researchers plan to continue studying the optimal field strength of the magnets at specific tissue locations - a precision that most commercially available magnets don't currently have.

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Sunday

Deadly hazard to children

Magnetic Jewelry Clasp

The federal government brands magnets in toys a deadly hazard to children because the tiny, powerful objects can fall out and cause serious, even fatal, internal injuries when swallowed.

Yet the Consumer Product Safety Commission has not taken steps to regulate even more powerful magnets when they are sold in loose form as backings on children's earrings, the Tribune has found.

The earrings consist of a small decorative part -- such as a cupcake, a faux diamond, a dolphin -- with a magnet inside. They are held in place by putting a loose magnet behind the earlobe.

Independent tests of more than a dozen magnetic earrings done for the Tribune showed that the earring magnets all were at least as powerful as magnets found inside toys that have caused the death of one child and scores of other injuries. Some of the magnetic earrings were more than five times more powerful.


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Monday

The Power of Magnetic Jewelry Clasp ?

Magnetic Jewelry Clasp

Magnetic Jewelry Clasp - Have you heard about Magnet Therapy? Well, Magnet therapy helps cure many common diseases like, headache, joint pains, muscle pain, migrane, weakness, and above all, it heals the damaged blood cells to fresh & healthy blood cells, resulting in healing major pains & circulation in all parts of body. It also increases about 40% of the metabolism of the body giving more resistance power.


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Wednesday

Body Jewelry: An Unusual Way Of Enhancing The Beauty Of Your

Magnetic Jewelry Clasp

Magnetic jewelry clasp. Since ancient times body jewelry has been a part of the culture and heritage of different religions. It has been known to be an essential part of the clothing and appearance of the people in many regions of the world. At different parts of time through the centuries it was also used to signify the class demarcations prevalent in society at that point of time.

How ever in recent times it has acquired a new dimension. Body jewelry has never been in such high demand. The human body is not merely a body, it is a piece of art which has its own innate beauty and body jewelry is the perfect way to enhance the beauty of your body. Not only can you decorate your body with it, but you can also use it to bring into focus certain parts of your body or to enhance the beauty of certain parts.

Body jewelry items are usually for particular places on the human body. These more common places for body jewelry include the nose, eyebrow, nipple, ear lobes and naval, along with ear plugs (both curved and straight barbells). As fashion trends keep changing, the various parts where you can use body jewelry and the manner in which you can use it also keeps changing.

Nose body jewelry comes either in the classic captive circular barbell, or in the form of a nose screw. The nose screw can either be jeweled or plain, depending upon your preference. Eyebrow body jewelry is similar to that of the nose, in the sense that the eyebrow body jewelry also has the small captive barbell. This is now being made with a dangling, sparkling charm to hang from the upper most part of your eyebrow barbell. The eyebrow body jewelry can be either curved or straight with a charm of any style or color dangling from the top.

Nipple and naval body jewelry is one of the more popular types of body jewelry, it sis especially popular amongst the youth or the more adventurous in spirit. Nipple body jewelry includes the nipple barbells and the nipple shields. Naval body jewelry designs are also endless.

Whatever kind of body jewelry you use or wear it is important to keep some pointers in mind. Such as what kind of material is that specific body jewelry made off, is your skin allergic to it and is the piercing for the body jewelry done in a sterile and antiseptic environment.

This kind of jewelry is available for almost every conceivable part of your body. There are endless styles, designs, colors and textures in which body jewelry is made. What ever your budget, whether it is low end or high end; body jewelry is available in every range to suit your pocket as well as your tastes.

Body jewelry is not merely a decorative fixture; it is also a personal style statement. You can use it to bring attention or to take away attention from a specific part of your body. It is quite in vogue these days and has been in existence since time immemorial. If you have the attitude and the panache you can carry of any kind of body jewelry.

About the Author: Looking for information about Jewelry? Go to: Merry Jewelry by Angela Davis

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