If beetles can do it, scientists should be able to: climb the wall, that is. Some researchers at Max Planck Institute have invented an adhesive that sticks to glass like beetle feet. The secret was to manufacture thousands of microscopic pads that adhere to smooth surfaces by van der Waals forces (the attraction of neighboring atoms). “Inspired by the soles of beetles’ feet, and therefore biomimetic, the special surface structure of the material allows it to stick to smooth walls without any adhesives.” The press release tells how bugs and reptiles had it first:It has been known for some time how insects, spiders and geckos have such a remarkable talent for walking on walls and ceilings. Extremely thin hairs literally stick their feet to the wall and the larger the animal, the finer the hairs. Geckos, which are heavy compared to a fly, have been using nanotechnology for this purpose for millions of years …. According to findings made by scientists at the Max Planck Institute for Metals Research in Stuttgart, the shape of the fibres is also significant; for example, spatula-shaped ends on the hairs provide particularly strong adhesion.How might beetle-foot or gecko-foot adhesives be used? Reusable adhesive tape, soles for climbers’ boots (Spider-man?) come to mind. What else?Potential applications range from protective foil for delicate glasses to reusable adhesive fixtures – say goodbye to fridge magnets, here come the microhairs, which will also stick to your mirror, your cupboard and your windows. For example, the new material will soon be found in industrial production processes in the manufacture of glass components. It has already been shown to perform in higher weight categories: the artificial adhesive fibers on the soles of a 120 gram robot helped it to climb a vertical glass wall.It was quite an engineering challenge to design the prototype, and the bugs are still being worked out (if Mr. Beetle Bailey will pardon the expression). Their product, when it comes on the market, will be user-friendly: “It lasts for hundreds of applications, does not leave any visible marks and can be thoroughly cleaned with soap and water.”You can just hear the commercials already. What should they call this stuff? It should beat out any TV ads for kaboom, vacuum cleaner robots and battery-free flashlights. Put on your announcer voice and say, “Sticks to almost anything. Leaves no marks and requires no messy cleanup. Use it in the kitchen, the bathroom, the office. Protect your eyeglasses and priceless photographs. Leave yourself notes on the window. Perfect for the artist or draftsman. Usable anywhere – everywhere. It’s amazing! But wait! Order now, and we’ll throw in this self-cleaning windshield, a $60 value, absolutely free! You get a hundred-foot roll of GeckoTape, a whisker robot for the kids, and the self-cleaning windshield, all for just $39.99. What are you waiting for? Operators are standing by to take your call. Call now! 1-800-THANK-ID.” So geckos have been using nanotechnology for millions of years, they say. Was this by intelligent design? No, it couldn’t have been. It is so vastly superior to human engineering, it must have been made by blind, mindless processes of accidental chance.(Visited 15 times, 1 visits today)FacebookTwitterPinterestSave分享0
20 August 2015In addition to offering schools, libraries and public areas free wireless service, Tshwane’s ground-breaking Free Public Wi-Fi initiative, run by non-profit organisation Project Isizwe with the City of Tshwane and several partners, is now bringing a much needed technological and social connectivity to the city in the interests of better service delivery and social cohesion.The public Wi-Fi facility, which has been running for over a year, is also available at the city’s health facilities, customer and municipal centres, tourism and heritage venues, as well as sites on buses, taxis and trains. The city has now launched three new user services: Wi-Fi Voice, Drive-In and Chat.The Wi-Fi Drive-In service will stream films and other programming to personal devices in public areas such as parks, events venues and other public gathering areas. Like traditional drive-ins, the service is aimed at bringing people together for a shared community experience.The first Drive-In programme is currently available at the Fountains Valley public park during the venue’s popular weekend flea market. The service has a catalogue of 30 free movies to choose from, with 10 new titles added monthly. There will be an emphasis on locally produced content in several languages. The number of venues where the streaming service is available will also be expanded over the coming months, covering the whole Pretoria/Tshwane region.Zahir Khan, Project Isizwe COO, says the idea behind it was to create a community and family experience, giving the people of the city an opportunity to gather in a secure, fun environment, “where citizens can break away from their usual routine and engage in a unique, ground-breaking experience.”The Wi-Fi Voice service allows users connected to the Tshwane Free Wi-Fi network to make unlimited free calls to other users, as well as connect to the city’s utilities customer-care line.Wi-Fi Chat, much like the Whatsapp and WeChat messaging apps, is a web- based platform for instant chat between users and a service delivery platform for city queries and information.“The high cost of voice calls and messaging creates a barrier to stimulating economic growth and creating opportunity for our youth,” says Khan, “the City of Tshwane will effectively reduce the cost of doing business in and with the city through the Tshwane Wi-Fi Voice and Chat apps.”With over 700 live Wi-Fi sites (and growing) across 95% of the city wards in the city, the Tshwane Free Public Wi-Fi service has over 720,000 unique users, making more than 22 million connections, enabling every citizen to be digitally included and part of the digital economy, regardless of personal circumstance. The mayor and Project Isizwe hope that the long-term benefits of increased GDP, productivity and efficiencies from service delivery ultimately make the citizens of Tshwane the best connected people in South Africa.Source: Screen Africa
The core of geocaching is pretty simple: to inspire geocachers to have an adventure at every location. But the game of geocaching can be much more complex. There are acronyms (TFTC, FTF, etc.), different cache types, SWAG, and trackables. Today, we’re focusing on SWAG and trackables, but be sure to check out the glossary and Help Center for more information if you’re just getting started with geocaching. Both SWAG and trackables are items that you have probably seen in a geocache before, but even though they can look similar, they are actually much different! Below we’ll explore some of these differences.First up: SWAG. Small toys, keychains, and other treasures found in the cache – that’s geocaching SWAG – or Stuff We All Get. SWAG is often something homemade, or represents a geocacher, their interests, or where they’re from! Geocachers trade swag by replacing items in the geocache with something of equal or greater value. Take a look at some SWAG examples below!Trackables on the other hand, are traveling game pieces that geocachers send out into the world via a geocache or at an event, often with a goal or mission. Some of these goals could be specific, like visiting every state in the US, or they may just want to go on an adventure to as many caches as they can. Either way, trackables let you experience an epic journey, one story and one geocache at a time. Each log from your trackable is a page in a digital diary. You can see exotic locations, read entries of your trackable’s travels, and connect with the geocachers who carry your trackable from geocache to geocache. View some trackable examples below!The main difference between SWAG and trackables are that you can keep SWAG, but unless a trackable says it can be collected, then the best action you can take is to move it to another cache, closer to its goal!So far so good? Now some time for etiquette. Don’t worry, it’s only a few reminders!How can I tell the difference between trackables and SWAG?The easiest way to differentiate the two is to look for a tracking code on the item. Tracking codes can be found on the item directly, such as written or engraved, or attached to it via a tag. Below are three different forms of trackables.Tags:Geocoins:Trackable code items:Can I keep SWAG?Yes! Just be sure to leave something for the next person by trading up or trading evenly.Can I trade SWAG for a trackable?SWAG is meant to be a trade item in geocaches. If you take a piece of SWAG, then you should leave something of equal or greater value behind. Trackables want to move from cache to cache, collecting stories along the way. No need to trade items for a trackable. Just ensure you can help move a trackable toward its goal if you take one from a geocache.Can I keep a trackable?Unless a trackable specifically says it can be collected, you should not keep it. Instead, try to move it closer to its goal! If you’re not heading in the same direction, try discovering the trackable instead so that it’s owner knows it’s still in the cache.Inspired to trade SWAG or send a trackable out on a journey of its own? View our trackable inspiration album and check out the latest in Shop Geocaching. But it begs the question, what’s the best SWAG or trackables you’ve ever encountered?Share with your Friends:More SharePrint RelatedSWAG to leave in geocachesDecember 10, 2019In “Learn”Five reminders about trackablesAugust 28, 2018In “News”Groundspeak Weekly Newsletter – August 24, 2011August 24, 2011In “Groundspeak’s Weekly Newsletter”
Neymar ‘I played the ball’ – Sarr insists he is not responsible for Neymar injury Jamie Smith 07:56 2/26/18 FacebookTwitterRedditcopy Comments(2) AFP Neymar PSG PSG v Olympique Marseille Olympique Marseille Ligue 1 PSG v Real Madrid Real Madrid UEFA Champions League The Brazilian was left in tears after tangling with the Marseille man in Le Classique, but Sarr is convinced he is not to blame for the injury Neymar’s suspected ankle injury was sustained entirely accidentally, says Marseille’s Bouna Sarr, who challenged the Brazilian before he left the field on a stretcher.Paris Saint-Germain led Le Classique 3-0 in on Sunday, with Neymar having set up Edinson Cavani after 55 minutes to wrap up the victory after Kylian Mbappe’s opener and a Rolando own goal.But with PSG coach Unai Emery having already used all three substitutes, Neymar was hurt in a collision with Sarr in the closing stages at the Parc des Princes. Article continues below Editors’ Picks Lyon treble & England heartbreak: The full story behind Lucy Bronze’s dramatic 2019 Liverpool v Man City is now the league’s biggest rivalry and the bitterness is growing Megan Rapinoe: Born & brilliant in the U.S.A. A Liverpool legend in the making: Behind Virgil van Dijk’s remarkable rise to world’s best player The pair challenged for the ball in the air and the PSG forward appeared to damage his right ankle when he landed awkwardly.PSG head coach Unai Emery said he is optimistic about Neymar recovering from his twisted ankle in time to face Real Madrid in the Champions League on March 6.But captain Thiago Silva told Canal+ he does not expect his compatriot to be fit to take on Marseille again in Wednesday’s Coupe de France quarter-final.19 – @KMbappe has become the youngest goalscorer in a “Classique” played in Ligue 1 at 19 years, 2 months & 8 days, overtaking Samir Nasri (19 years, 2 months & 17 days on 10 September 2006). Wonderkid. pic.twitter.com/qJqWKJJeUa— OptaJean (@OptaJean) February 25, 2018Neymar was hit by a heavy challenge by Florian Thauvin early in Sunday’s clash and the 26-year-old was seemingly targeted by Marseille, having been fouled eight times over the course of the game.Sarr, however, claimed he was not at fault in the incident, which left Neymar in tears as he was carried from the pitch on a stretcher.”Neymar? Me, I saw only one thing is that I played the ball,” Sarr told reporters post-match. “I didn’t go at all with the intention of doing it. This is not my type of game at all.”Apparently he twisted his ankle. It’s unfortunate for him, but it’s a game fact like any other.”
The Government’s logistics hub initiative will be a global asset of the scale and significance of the world’s other leading hubs in Rotterdam, Singapore, and Dubai. The hub will allow the country to take full economic advantage of the opportunities presented by the widening of the Panama canal by 2015. Story Highlights The development of the hub is estimated to cost some US$8 billion. The Government’s logistics hub initiative will be a global asset of the scale and significance of the world’s other leading hubs in Rotterdam, Singapore, and Dubai.Minister of Industry, Investment and Commerce, Hon. Anthony Hylton, emphasised at a meeting with government communicators at Jamaica House on March 28 that the hub will have far-reaching economic benefits that go far beyond basic transshipment activities.Mr. Hylton pointed out that the hub will allow the country to take full economic advantage of the opportunities presented by the widening of the Panama canal by 2015, and that the project is supported by Jamaica’s development partners, including the International Monetary Fund and the World Bank, as well as global investors.He explained that historically, major trading occurred between Europe and North America, but in recent times, with the coming into being of the World Trade Organisation, there have been significant changes in global trade.This, he said, has brought about a shift in the trade corridors, so that this space no longer lies simply between Europe and North America. There has been a major shift to South East Asia, in particular.“That corridor shift will benefit Jamaica significantly…more directly related to the Panama Canal,” he remarked, noting that with the focus on larger vessels (aircrafts and ships), there has been increased need for fewer stops.“It benefits us, because the canal now carries Panamax vessels. With the expansion, those vessels will be increased by about three times the size of the existing vessels. What that means is that countries like China (and) Japan, wanting to get their goods to market, will see that coming through the Panama canal is the preferred route,” he outlined.This route will cut distances by up to 6,000 miles. He noted that although the United States and Canada are still very strong trading markets, even more attractive to China and other traders in South East Asia, is Central and South America, which have been the fastest growing markets over the past decade.This benefits Jamaica, which is directly North of the Panama Canal, an ideal geographical position.“We seek through this logistics hub, to recognise those shifts in global trade…to recognise the opportunities that is presented to Jamaica, because Jamaica would be the first and nearest country out of the Panama Canal,” he asserted.The Minister pointed out that Jamaica also has other advantages, as it has a comparative edge over any other country in the Caribbean Basin, because vessels can travel in any one of four routes – through the gulf of Mexico; through the Panama Canal; North East (to Europe); or via South America.“Those are key advantages. No other country in the region has that four-way advantage,” he stated.He added that even more beneficial is the fact that some of the deepest harbours in the hemisphere lie on Jamaica’s South Coast.The Minister said Jamaica needs to, and is well on its way to accomplish a number of targets or sub-projects in order to qualify itself as the world’s fourth major hub. A major one of these is a deeper harbour that can accommodate the new panama vessels, which will pass through the canal. Panamax is the term for the size limits for vessels travelling through the Panama Canal.Jamaica happens to have one of the deepest ports in the world, at Cow Bay, Yallahs, St. Thomas. “That 51-metre depth is attractive to the biggest of the vessels, and the idea is to build a commodity port that can take bulk storage. That gives Jamaica a range of activities – from containerised shipment to commodity. That is the entire gamut of global trade, which will put us in an advantageous position,” he told the communications officers.Furthermore, he explained, there are also opportunities in dry docking (vessel maintenance). Under International Maritime Organisation (IMO) rules, these vessels must be maintained at prescribed intervals.“At the moment there is no repair station in the Caribbean. Jamaica, recognising that, is putting itself in a position to be able to provide dry docking facilities…The country therefore becomes an attractive hub for ship owners,” he noted.However, the Minister said it is shippers who greatly influence where vessels go. This is where the logistics centre at the Caymanas Economic Zone, which is being developed in St. Catherine, will come in.“That is important, because while we get some money from the containers just passing back and forth, the bigger money is to be made when those containers leave the port and come into Jamaica with the contents to add value (to the economy). That’s what will create a lot of jobs and add and extract more value for us. So, what we intend to do is to provide full service for shippers,” he said.For example, Minister Hylton noted, even a seemingly simple activity such as changing labels becomes an important, income-generating enterprise in this scenario. “In this region we have several languages…so to get it to a station where you can switch labels before it goes into the market – that whole exercise is big money,” he said.There will therefore be a range of activities and spin-offs from the hub, which require labour of various skill levels.Turning to opportunities in the aviation industry, the Minister pointed out that the Vernamfield aerodrome in Clarendon, will become very important, as the two existing major airports will not be able to take the largest of the cargo aircrafts.“Vernamfield has the capacity to take the largest of the aircrafts, and that will give Jamaica the capacity to move some goods that are more sensitive from long distances – China or anywhere else in the Far East – to the hub in Jamaica,” he explained.Transporting cargo by air will shorten the journey, with the option to switch from air to maritime transportation. “This configuration becomes much more attractive,” the Minister argued.He said Jamaica will be the link, in this hemisphere, to the ports of Rotterdam in Europe, Dubai in the Middle East, and Singapore in the South East, adding that there is a need and demand in the global trading system for a fourth hub.“It improves the global trading system by having a relay, and ensuring that the biggest vessel supporting global trade are able to move from one region of the world to the next, and that’s where we find ourselves, and we have to take advantage of it, because if we don’t, others will,” the Minister stressed.He said a project of this global magnitude demands that everyone is on board and at least understand the importance of the hub, how it will operate, and the economic benefits.To this end, the Ministry has carried out a series of islandwide public consultations to sensitise citizens about the Government’s plans for the logistics hub initiative.In the meantime, the government is putting in place measures to shore up the type of labour force which will be needed for the over 10,000 jobs that will be generated by the development.The Logistics Task Force has secured broad-scale representation on its Human Resource Working Group from stakeholders in the Ministry of Education as well as secondary, tertiary and vocational institutions. The Working Group is headed by the Caribbean Maritime Institute Executive Director, Dr. Fritz Pinnock.The development of the hub is estimated to cost some US$8 billion.
Kolkata: Four persons waiting in the out patient department (OPD) of the Calcutta Medical College and Hospital were injured after a chunk of concrete came off from the ceiling and fell on them Friday, police said. The incident happened in the waiting hall of the ophthalmology department’s OPD around noon. The four, after preliminary medical treatment, were released, police said. “Because the building is quite old, there are some rooms where the ceiling is not in good condition. We have closed the room,” a senior doctor at the hospital said.
Using personal care products like moisturisers and lipstick – rich in toxic plastic chemical – during pregnancy can affect your baby’s motor skills in adolescence, warns a research. The study showed that maternal exposure to phthalates – plasticiser chemicals – in late pregnancy could have long-lasting adverse effects on motor function in children. Phthalate exposures likely occurred when expecting mothers and their children unknowingly ingested small amounts of products like lipstick or plastic food containers or packaging or have absorbed these chemicals through their skin. Also Read – Add new books to your shelf”The study adds to the substantial body of evidence on the health risks of phthalates for children, which also includes elevated risk for asthma and cognitive issues,” said Julie Herbstman, Associate Professor at the Columbia University in the US. As lower scores on measures of motor development have been associated with more problems in cognitive, socio-emotional functioning and behaviour, the results, published in the journal Environmental Research, have implications related to overall child development. Also Read – Over 2 hours screen time daily will make your kids impulsiveFor the study, researchers included 209 children and measured levels of phthalates and their metabolites in urine collected from women during late pregnancy and from their children at ages three, five, and seven. Children with even subtle motor problems often have difficulty participating in daily activities of childhood, particularly sports. They may also experience low self-worth and self-esteem, high rates of anxiety and depression, as well as behavioural disorders, such as ADHD (Attention Deficit/Hyperactivity Disorder), according to Pam Factor-Litvak, Professor at the varsity. “To the extent possible, expecting mothers should minimise their exposures to products like moisturisers that contain these chemicals by paying attention to product labels.”