A new transparent, bioinspired coating makes ordinary glass tough, self-cleaning and incredibly slippery, a team from Harvard University reported online July 31 in Nature Communications.The new coating could be used to create durable, scratch-resistant lenses for eyeglasses, self-cleaning windows, improved solar panels and new medical diagnostic devices, said principal investigator Joanna Aizenberg, who is the Amy Smith Berylson Professor of Materials Science at the Harvard School of Engineering and Applied Sciences (SEAS), a core faculty member at the Wyss Institute for Biologically Inspired Engineering, and professor of chemistry and chemical biology.The new coating builds on an award-winning technology that Aizenberg and her team pioneered called Slippery Liquid-Infused Porous Surfaces (SLIPS)—the slipperiest synthetic surface known. The new coating is equally slippery, but more durable and fully transparent. Together these advances solve longstanding challenges in creating commercially useful materials that repel almost everything.The tiny, tightly packed cells of the honeycomb structure, shown here in this electron micrograph, make the SLIPS coating highly durable.SLIPS was inspired by the slick strategy of the carnivorous pitcher plant, which lures insects onto the ultraslippery surface of its leaves, where they slide to their doom. SLIPS’ thin layer of liquid lubricant allows liquids to flow easily over the surface, much as a thin layer of water on an ice rink helps an ice skater glide. (See video.) Unlike earlier water-repelling materials, SLIPS repels oil and sticky liquids like honey, and it resists ice formation and bacterial biofilms as well.Aizenberg and her colleagues sought to develop a coating that accomplishes this, but extends those capabilities further. The new SLIPS design surpasses existing coatings, which can be quite robust but not slippery or transparent, or, alternatively, transparent but not mechanically stable or repellent enough, Aizenberg said.“The SLIPS-like coating is mechanically stable and has a long-lasting performance as a slippery surface because it’s composed of a sturdy honeycomb-like structure that holds lubricant in tiny, container-like pits,” said lead author Nicolas Vogel, a postdoctoral fellow in applied physics at SEAS.To create this coating, the researchers corral a collection of tiny spherical particles of polystyrene, the main ingredient of Styrofoam, on a flat glass surface like a collection of Ping-Pong balls. They pour liquid glass on them until the balls are more than half buried in glass. After the glass solidifies, they burn away the beads, leaving a network of craters that resembles a honeycomb. They then coat that honeycomb with the same liquid lubricant used in SLIPS.Applying the SLIPS-like coating to glass slides confers unmatched mechanical robustness. Slides treated this way withstood damage and remained slippery after various treatments that can scratch and compromise ordinary glass surfaces and other popular liquid-repellent materials, including touching, peeling off a piece of tape, and wiping with a tissue.These glass slides with the SLIPS coating also repelled a variety of liquids, just as SLIPS does, including water, octane, wine, olive oil and ketchup. And, like SLIPS, the coating reduced the adhesion of ice to a glass slide by 99 percent. Keeping materials frost-free is important because adhered ice can take down power lines, decrease the energy efficiency of cooling systems, delay airplanes, and lead buildings to collapse.By adjusting the width of the honeycomb cells to make them much smaller in diameter than the wavelength of visible light, the researchers made the coating completely transparent.The researchers were also able to apply the SLIPS-like coating to glass slides in a pattern that confines liquid to specific areas—an ability that’s important for various lab-on-a-chip applications and medical diagnostics.“We set ourselves a challenging goal: to design a versatile coating that’s as good as SLIPS but much easier to apply, transparent, and much tougher—and that is what we managed,” Aizenberg said.The team is now honing its method to better coat curved pieces of glass as well as clear plastics such as Plexiglas, and to adapt the method for the rigors of manufacturing.“Joanna’s new SLIPS coating reveals the power of following nature’s lead in developing new technologies,” said Donald E. Ingber, founding director of the Wyss Institute, Professor of Bioengineering at SEAS, and Judah Folkman Professor of Vascular Biology at Harvard Medical School and Boston Children’s Hospital. “We are excited about the range of applications that could use this innovative coating.”This work was funded by the Advanced Research Projects Agency—Energy (ARPA-E), the Air Force Office of Scientific Research, and the Wyss Institute. Nicolas Vogel received funding from the Leopoldina Fellowship program. In addition to Vogel and Aizenberg, the research team included: Rebecca A. Belisle, a former Wyss research assistant who is now a graduate student in materials science and engineering at Stanford University; Benjamin Hatton, formerly a research appointee at SEAS and a technology development fellow at the Wyss Institute who is now an assistant professor of materials science and engineering at the University of Toronto; and Tak-Sing Wong, a former postdoctoral research fellow at the Wyss Institute who is now an assistant professor of mechanical and nuclear engineering at Penn State University.
The Native American Student Association of Notre Dame (NASAND) hosted a town hall Tuesday to discuss the representation of Native Americans in Luigi Gregori’s murals depicting the life of Christopher Columbus located in the Main Building. NASAND vice president, senior Armani Vaniko Porter, and professor of art history Michael Schreffler reflected on the significance of the murals and answered questions from audience members.Schreffler said art historians would not expect 19th-century paintings to be historically accurate representations of the subjects they portray.“It would be like sort of expecting a Hollywood film to be accurate,” Schreffler said of the murals. “What’s interesting about them certainly is the relationship between the story that is being told but at the same time, the attitudes of the people who hired the painter and the attitudes of the painter.”The murals draw a parallel between the life of Columbus and the founding of the University, Schreffler said, and some of the paintings include figures from the University.“In some ways it parallels the story of the University of Notre Dame as it’s conveyed, for instance, on the University website, which is also sort of an against-all-odds story — financial struggles in this undertaking, hard winters,” Schreffler said. “There were other barriers as well — the fire of 1879 [in] the administration building. So that’s how I see it. The purpose, I would say, is to construct an identity or participate in constructing an identity for the University.”Porter said, however, that the murals send a symbolic message of oppression. The paintings’ portrayals of Native Americans is an example of this message.“I actually took my first visit to Notre Dame after being accepted,” he said. “I remember just walking down the halls and not really having a lot of words at first. One of the first things that came out to me when I first saw it was just how strong the power differential is in every single one of these paintings. The fact that that is so heavily emphasized is the thing that stood out the most to me.”For Porter, the murals reflect a tendency to ignore differences in students’ cultural backgrounds.“In our fervor to make the Notre Dame community, we inadvertently homogenize and we strip away that which makes us unique or that which makes us culturally unique,” Porter said. “And that is something that is inherently oppressive to those who are of minority populations.”During the question and answer session, Julie Dye, a member of the Pokagon band of Potawatomi Indians in Indiana who attended the town hall, said the murals portray a stereotype of Native Americans that is often promulgated in schools.“We have a problem in this country with education from kindergarten on up … and we need to correct that,” Dye said. “This would be a good start. And by removing these murals, I’m not asking to destroy them, but remove them and put them somewhere else. Because if you just put a plaque up, you’re missing out because the visual impact of art is a big part.”Carla Getz, who is also a member of Pokagon band, said she is also frustrated with the representation of Native Americans in the murals.“According to all the murals and the statues, we all look like alike. We didn’t. We don’t look alike,” Getz said. “We don’t dress alike. We have things that are indigenous to our own culture, to our own tribe, and that’s all being forgotten.”Though Porter said he believes the murals should be taken down, he said others within NASAND fear that removing the murals would erase the “true history” of Notre Dame’s relationship with Native Americans.“We have groups that may wish to keep them up, but to have a strong and decisive explanation of what occurred … an addressing of what has occurred, what is our true history,” Porter said. “We have to come to grips with that, regardless of how embarrassing or dirty it might be or look to the administration.”Tags: Gregori Murals, Main Building, Native American Student Association of Notre Dame, Pokagon Potawatomi
Though Notre Dame is located in Indiana, it caters to a national population with students from many different states. At Notre Dame, student-run state clubs perform the function of bringing together students from their home areas. According to SAO, there are clubs representing nine states: California Club, Connecticut Club, Hawaii Club, Louisiana Club, Minnesota Club, Montana Club, New Jersey Club, New York Club and Texas Club. Each state’s club has a slightly different focus, from helping arrange transportation at breaks to organizing events reflecting their state’s culture.Junior Danny McMaster, vice president of the New Jersey Club, said his club’s main purpose is serving as a link between students, alumni and New Jersey, as well as social opportunities.“We organize rides back, both by organizing a major bus back … [and] in coordination with some of the Philadelphia [alumni] clubs,” McMaster said. “We are the liaisons between New Jersey students on campus and the four New Jersey [alumni] clubs. … We’re just basically a social club where, you know, all the New Jersey kids can get to know each other, get some cool T-shirts, get some good pizza and good breakfast sandwiches.” Junior Rosie Crisman, co-president of California Club, said her club’s major focus is helping Notre Dame students network with professionals in California. She said a large number of California Club members are not actually California natives.“We help students connect to professionals in California, including Notre Dame alumni and recruiters,” she said. “If I had to guess, around 25 percent of our club is not from California.”Senior Iliana Contreras, president of Texas Club, described her club’s mission as both connecting students to alumni networks and helping Texans adjust to life in South Bend.“Alumni networks within the Texas Club are huge. We have the Alumni Barbecue in the spring where actual alumni from Texas come and they host a huge barbecue for all of our students, be [they] from Texas or not,” Contreras said. “We also want [Texas Club] to be a safe haven for people on campus; we recognize that moving to South Bend, Indiana, from any place in Texas … [puts students in] an entirely different culture, environment and weather. We want to make sure that people know where to buy the right jackets, get the right snow boots. … Texas Club is supposed to be a place where you can come and you can combine your two homes: your love of Texas and your love of Notre Dame.”These clubs allow for students to express their love of their home state, even while so far away from home. McMaster said, in his experience, state clubs build up community among the members of their state, and that those involved enjoy their work.“One of the biggest draws for us is that New Jersey is one of the biggest states at Notre Dame, especially considering how far away it is,” McMaster said. “There’s just a matter of state pride … [because] a lot of people rag on our state. Everyone who’s from it really loves it and we all have a good time with it.”Tags: California, Geographic Diversity, New Jersey, State Clubs, Texas
About 500 farmers and 130 market managers in Georgia, Virginia and South Carolina have been trained in the curriculum. Other states, including Alabama and Tennessee, have also started using the curriculum.“What we’ve found is that almost 40 percent of the farmers on small farms in our surveys selling [at farmers markets] in these three states – Georgia, Virginia and South Carolina – have been farming three years or less,” Harrison said. “They don’t have a lot of experience farming and, in many cases, are just getting started.” Some of the “best practices” Harrison recommends for farmers include bacteria testing for irrigation water and water used for washing produce; properly composting manure; and providing sanitation training for farm workers, among others.Harrison recommends that market managers ask farmers and vendors how products have been grown and handled as well as about the use of manure on food crops, and that they have a food safety plan or food safety specifications for their market.“I think everybody needs to see it,” said Cheryl Brady, market manager for the Monroe Farmers Market, who was trained in the curriculum in 2012. “It definitely brought some issues to our attention.”The curriculum also includes a DVD that features interviews with farmers and market managers who already use “best practices,” and presentations that provide details about food safety issues such as foodborne illnesses, like E. coli, that can trigger significant health and economic concerns.Harrison said the next step is to convert the curriculum into online self-study modules that will be available on the UGA Extension website.“Safe production and marketing of local produce can help protect consumers from foodborne illnesses, reduce medical costs associated with these illnesses and prevent devastating losses to farmers,” Harrison said. “It can also help local agricultural markets flourish, because it’s a way to keep money in the pockets of local farmers.” Shoppers expect food from local farmers markets to be healthier and safer than comparable items in the grocery store. A group of Southern university scientists are training farmers and market managers to help make that assumption a reality.A 2013 report by the U.S. Department of Agriculture noted a 400-percent increase in the number of local farmers markets since the early 1990s, according to Judy Harrison, a University of Georgia Extension food safety specialist.Since 2009, Harrison has led a multi-state project, funded by the USDA, to study food-safety practices on farms and in markets and to create a food-safety curriculum for farmers and market managers. She said the influx of beginning farmers selling at markets emphasizes the need for increased education about food safety.The project, “Enhancing the Safety of Locally Grown Produce,” recently won the first place Food Safety Award from the National Extension Association of Family and Consumer Sciences.USDA-backed initiatives, such as the “Know Your Farmer, Know Your Food” and “Farm to School” programs, have helped to create a demand for local produce, Harrison said, giving the curriculum even more relevance.“If you look at the people who shop at farmers markets, it’s people who think that the food they get there is going to be healthier and safer for them than food from the grocery store,” Harrison said. “We just need to make sure that it is.”The curriculum includes checklists and fact sheets that cover basic food safety issues for both farmers and market managers. Harrison along with UGA College of Agricultural and Environmental Sciences sustainable agriculture coordinator Julia Gaskin, faculty from the UGA Food Science and Technology Department, and faculty from Virginia Tech and Clemson University developed the curriculum.Farmers and managers who have implemented the program agree the curriculum is having a positive impact. Between 18 percent and 64 percent of farmers and market managers, depending on the practice, indicated they changed as many as 16 different practices to improve produce safety, according to program evaluation forms.
The Georgia Association of Teachers of Family and Consumer Sciences has named Elizabeth Andress, professor of foods and nutrition in the University of Georgia College of Family and Consumer Sciences (FACS), the organization’s Postsecondary Family and Consumer Sciences Teacher of the Year.The award recognizes outstanding achievements by individuals who have made extraordinary contributions to the career and technical education field.Andress is project director for the National Center for Home Food Preservation. She is also the lead editor of “So Easy to Preserve,” a for-sale UGA Cooperative Extension publication. She co-produced a video series by the same name, both of which provide step-by-step instructions on preserving a variety of foods. The food preservation manual is one of Extension’s most popular publications.Andress leads UGA Extension’s statewide programming in home food processing and preservation, consumer food-science topics, and food safety education for the food-service industry, including the ServSafe® food safety certification program. She develops curricula on consumer food safety issues, consumer food use and preparation, and food preservation for youth, through 4-H, as well as adults.At UGA, she teaches a senior undergraduate course in food safety and sanitation and conducts frequent in-service trainings for FACS and agriculture education high school teachers in Georgia. Andress also teaches Extension in-service trainings for educators in Georgia and 17 other states. She teaches Georgia family and consumer science teachers lessons on food additives and food science that include classroom resources.Her trainings are often hands-on laboratory food science workshops where participants learn the science of various food preservation methods through demonstrations of instructional activities that can be used the classroom.Andress has been awarded numerous honors over her career, including the national Award for Excellence in Extension from the Association of Public and Land-grant Universities, for her long-term success in combining research and education in food safety. She received the Walter Barnard Hill Distinguished Public Service Fellow Award, UGA’s highest award for public service and outreach, and has been recognized by the National Association of State Universities and Land-grant Colleges, the U.S. Department of Agriculture National Institute of Food and Agriculture and the National Extension Association of Family and Consumer Sciences.She earned a bachelor’s degree in home economics from Albright College in Reading, Pennsylvania; a master’s degree in family and child development from Virginia Polytechnic Institute and State College; and a doctorate in food science from Pennsylvania State University.
13SHARESShareShareSharePrintMailGooglePinterestDiggRedditStumbleuponDeliciousBufferTumblr Both the House and Senate passed a federal government funding bill that will at least delay any federal government shutdown until midnight Dec. 11, when the stopgap measure runs out.The votes occurred ahead of the midnight deadline when a default government shutdown would have kicked in.The bill, which reportedly also provides emergency funding to fight wildfires and extends the expiring authority of the Federal Aviation Administration, pass the Senate 78-20 and the House 277-151.This short-term spending bill buys only two months for Congress and the White House to come to a year-end spending deal. The House will be under new Republican leadership by the time a new deal is forged as current House Speaker John Boehner, R-Ohio, announced he would be retiring at the end of October. continue reading »
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Technology giant Gojek has announced that American tech companies Facebook and PayPal have invested an undisclosed amount in its new round of funding, joining other high-profile global corporations such as Google and Tencent.The funds would be used to focus on increasing digital economic growth in Southeast Asia, especially payment and financial services inclusion for small and medium enterprises (SMEs), said the decacorn, which means the company is valued at more than US$10 billion.“The COVID-19 pandemic has taught us that a resilient economy requires support from reliable digital infrastructure,” said Gojek’s co-CEO Andre Soelistyo in a statement on Wednesday. “With this collaboration, we will continue to speed up digital economy inclusion, especially when the majority of SMEs in Southeast Asia still rely on cash transactions.” Gojek is the first Indonesian company to receive an investment from Facebook, with the social media company looking to create opportunities for businesses in Indonesia through its instant messaging service, WhatsApp.“Gojek, WhatsApp and Facebook are important services in Indonesia. Through this cooperation, we can help millions of SMEs and their customers to join the largest digital economy community in Southeast Asia,” said WhatsApp chief operating officer Matt Idema.Facebook has been on a mission to widen the market for its digital payment services, as the company talked with several e-wallet companies in Indonesia.Meanwhile, Gojek has agreed to integrate PayPal into Gojek’s payment system, GoPay, giving GoPay users access to the PayPal network of 25 million merchants worldwide. PayPal head of corporate development and ventures for APAC Farhad Maleki said that Southeast Asia was at a very crucial point in the process of digital adoption, which could create new opportunities to provide financial services to unbanked consumers.“We are very excited about entering into a strategic relationship with Gojek to expand access and provide new experiences for our users in this very dynamic market,” he said.While Facebook and PayPal had only recently invested in Gojek, Google and Tencent have been investors since 2018.“Gojek has been active in supporting financial inclusion for SMEs, and we are proud to strengthen our collaboration through additional investments,” said Jeffrey Li, vice president of Tencent Holdings and managing partner of Tencent Investment.Gojek has raised a combined total of Rp 14.5 billion in fresh capital injection from seven investors this year. Topics :
Sharing is caring! Share HealthInternationalLifestylePrint Mom Struggles to Love Twin Born With Half a Face by: – February 21, 2013 119 Views one comment Share Twins Oliver, left, and Harry Machin pose at home in Stoke-On-Trent, England. After the birth of Oliver and Harry doctors discovered baby Harry had been born with a severe facial deformity. (Barcroft Media/Landov)The Machin boys are identical twins, but Harry was born with a rare disfigurement: his left eye, ear and nostril never fully developed.Now that they are 7, Harry’s face makes no difference to his twin Oliver, but their mother struggled for two years to love them equally.“When I cuddled him for the first time, waves of terror swept over me,” said Charlene Machin, 33, of Staffordshire in Britain. “How could I possibly love this little boy when he looked like this?”“People assume that maternal instinct kicks in as soon as you hold your child for the first time — but mine didn’t,” she told the Daily Mail newspaper. “I just couldn’t love my son when he looked like this. Instead I just felt grief — grief for a life that I felt had been taken from me, a normal life that should have been Harry’s.”ABCNews.com talked to Machin’s husband, Mark Machin, who did not want to participate in an interview. He said his wife was out of the country.Today, her bond with Harry is loving and strong. But Machin’s initial response, then her adjustment, illustrate the ways in which parents deal with the surprise of having a child who is disfigured. Advocates say that honest stories like theirs help others to accept the disabled.“Being surrounded or having contact with people with disabilities could have made the transition easier her,” said Lawrence Carter-Long, spokesman for the National Council on Disability. “Part of the problem is [the disabled] are segregated, if not by institutions, then by attitudes. We don’t see them in the work place or in school, so the fears and the worries are more pronounced. It’s not an issue of malice, but of proximity.”Disability can mean anything from a genetic disorder like Harry Machin’s to aging parents or injured soldiers who return from wars in Afghanistan and Iraq. And anyone, in an instant, can face paralysis after an accident, according to Carter-Long: “Superman falls off a horse and joins the club.”Both Kevin Irvine and his wife Karen Tamley, who live in Chicago, are disabled and have an adopted daughter with a severe facial disfigurement.“There is no typical way to respond when you discover that someone close to you has a disability, especially something significant,” said Irvine, 43.“People on the outside shouldn’t be judgmental,” he said. “Unless they are going through that, they can’t understand.”“The thing that is heartening, is to see that most people, at some point, realize that living with someone with a disability is different than the way you may have expected, but it’s rich and fulfilling,” said Irvine. “There’s love — ultimately, it is your child.Dominika has Apert syndrome, a genetic disease characterized by facial malformations, fused fingers and toes, and a skull whose plates bond prematurely so the brain has no room to grow.Tamley, 46, is commissioner of the mayor’s office for people with disabilities and Irvine, who previously worked in advocacy, is a stay-at-home father.He was born with hemophilia and in high school acquired HIV and Hepatitis C from blood transfusions. Tamley uses a wheelchair because she has a rare disorder of the lower spine.Because of their disabilities, the couple decided to adopt. They worked with an American agency because they feared an international agency might not accept parents with health conditions or might “change the rules” mid-way through the process.“We weren’t looking to adopt a child with disabilities,” said Irvine. “But we had no preconditions. Just like anyone else, we wanted to be parents.”Dominika’s birth parents placed her for adoption at The Cradle in Evanston, Ill., where she stayed for five months before Irvine and Tamley were approved as adoptive parents.“We fell in love with her and brought her home,” he said. Still, parenting has not been easy. Besides facial disfigurements, Dominika has scoliosis, fused shoulders and mild hearing impairment. She’s had over a dozen surgeries and procedures.“It did take an adjustment for us to some extent,” he said. “We certainly didn’t know what our baby would be like. ”But the hardest part is watching Dominika cope with unwanted attention. “When she was younger, she was pretty oblivious,” he said. “But around 5, she started feeling it more. Kids make remarks or stare. Kids come and point and bring friends to look at her.”Just last week at an indoor playground, a child looked at her face and screamed, “Ewww!”“When I am on the scene, I make a comment,” said Irvine. “We told her that if she hears that, she should let them know it hurts her feelings — it’s an important way to disarm them. She can also introduce herself — when kids know someone’s name, it does help.”Irvine said it was “unrealistic” to expect people to be instantly comfortable with a severe facial disfigurement. “People feed off your attitude and how you act. If you are comfortable, they will feed off that.”In the case of the Charlene Machin, he said no one should judge her for not immediately loving her child, and he was inspired by her sharing the story.“We need to tell our stories,” said Irvine. “More of us are living openly out there and it is easier for families like the one in England to get to a place of acceptance when they are surprised by disability.”Today, Machin is unequivocal in her love for both Harry and Oliver, but it wasn’t’ easy.In the first stroller rides around town Harry faced unwelcome points and stares. Some even screamed after seeing the child, she said. Machin blamed herself.But things changed when the twins were about 18 months old. Machin was in a mother’s store when children surrounded her to look at the twins.“I felt like the Pied Piper as I walked through the store with them behind me, staring and pointing,” she said. “I’d had enough. It was time to help Harry face the world. I swung the buggy round and said, ‘This is Harry’.“The children asked what was wrong with him, so I told them. And afterwards I felt stronger. Instead of trying to hide my son away, I’d faced it head-on, and I felt better.”Harry has now had three successful surgeries to reposition his eye socket. Next year, doctors will stretch his eyelid and fit it with a prosthetic eye.His mother said she recently overheard Oliver say to one of Harry’s tormenters, “He’s my brother. It doesn’t matter what he looks like.”By SUSAN DONALDSON JAMES/ABC News Tweet Share
Barcelona sports director, Eric Abidal, has upset Xavi over claims regarding the Al Sadd coach. Xaviled Al-Sadd to a victory and a narrow defeat at the Club World Cup in Doha in December Speaking with Sport this week, Abidal insists there was never an offer made to Xavi about replacing Ernesto Valverde over the New Year. Cadena Ser says Xavi is upset with Abidal’s comments, insisting Barca did he indeed make an offer – which he turned down. For the moment, however, he is keeping his own counsel on the issue.Advertisement Loading… Abidal said earlier this week: “We did not make an Xavi offer. If he has received an offer from us, just show it to me. I have never seen it. “We did talk. At the first meeting we had with him, Xavi listened. He had to present his ideas to us at the second meeting. Read Also:Xavi: why I turned down Barcelona “What has come out about those encounters in the media has more to do with politics than with sport. And I am not concerned with politics, I only talk about football. I am interested in the way a trainer works. But the things that came out were about completely different things.” FacebookTwitterWhatsAppEmail分享 Promoted ContentBirds Enjoy Living In A Gallery Space Created For Them10 Of The Most Successful Female Racers To Know About10 Phones That Can Work For Weeks Without RechargingThe Models Of Paintings Whom The Artists Were Madly In Love With9 Facts You Should Know Before Getting A Tattoo10 Risky Jobs Some Women Do8 Shows You Didn’t Want To Watch At The End7 Ways To Understand Your Girlfriend Better7 Universities In The World Where Education Costs Too MuchThe Very Last Bitcoin Will Be Mined Around 2140. Read More5 Of The World’s Most Unique Theme ParksHere Are The Top 10 Tiniest Mobile Phones On The Planet!