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toxic chemicals turn a new material from porous to protective


phoenix — a new, breathable material that can also block biological or chemical threats could offer comfortable protection for people working in contaminated environments or dangerous military zones.the bottom layer of the material, described april 3 at the materials research society spring meeting, features carbon nanotube pores embedded within a flexible synthetic polymer film. these pores are just a few nanometers across — too small for bacterial or viral cells to squeeze through, but wide enough for sweat to escape.the top layer offers further protection. it is made of another, spongy polymer that normally allows water and other molecules to pass through. but when the polymer comes into contact with g-series nerve agents — the family of toxic chemicals that includes sarin gas —...






a new polymer could make phone screen repairs a thing of the past


the study was published in science by a team of researchers led by professor takuzo aida from the university of tokyo. titled "mechanically robust, readily repairable polymers via tailored noncovalent cross-linking," the research promises a unique hard glass-like polymer called "polyether-thioureas" that can heal itself with only hand pressure. this makes it different than other materials that need high heat to heal up from a break."high mechanical robustness and healing ability tend to be mutually exclusive," said researchers. "in most cases, heating to high temperatures, on the order of 120 degrees celsius or more, to reorganize their cross-linked networks is necessary for the fractured portions to repair."according to the guardian, the special glass polymer was discovered by mis...






future dialysis patients could grow their own artificial veins


lucquin's company has been working on a polymer-based implant that can be wired into a person's blood vessels. the implant is, essentially, a hollow scaffold built from a new plastic polymer that encourages tissue growth. once inserted into a person's veins, their own bodies begin growing a new blood vessel around the artificial one. the implant then dissolves after a couple of months. leaving behind an entirely new link that can be connected up to a dialysis machine.the implant itself is harnessing a variety of doctrines, including electrospinning and supramolecular chemistry. these techniques have been married under the new process of endogenous tissue restoration which has been pioneered by a company called xeltis. that company, however, has used the process to restore damaged heart ...






identification - another capacitor like component


spehro spotted the oscon svp, the other one has:a fancy fashionable blue color which looks like nichicon lf but the markings are wrong1500µv/2.5v points to a polymer cap, to be used on pc motherboard or gputhe tiny "crown" on top of the "a" is actually the nippon chemi-con logomarkings are very similar to other nippon chemicon polymer caps, so i think we have an identification, but hard to say what series they are though."85k" is not a temperature, rather a serial/lot number.now, since you say you are a beginner:if you want to reuse these caps, mind the fact that the esr will be extremely low, most likely below 0.010 ohms, so if you use them at the output of a voltage regulator or ldo you need to check its datasheet to be sure the regulator/ldo will be stable with such a low esr cap...






6 everyday things you had no clue were made of dead animals


you know all that hard-earned money you're spending on vegan and cruelty-free products? well, uh, might wanna start looking up places that still use the barter system. turns out, quite a few countries' money now contains tallow, which, again, is a type of rendered animal fat. you may never hold a fat wad of bills, but on the bright side, a wad of fat bills is probably doable.serdjophoto/istockit's now possible for your cash to literally grease the wheels.the culprits are polymer banknotes, which are more durable than other types of foldable currency and are much harder to counterfeit (presumably due to scammers' deep commitment to cruelty-free methods). on the one hand, polymer notes should have a lesser environmental impact in the long term, since they last longer than paper bills. on...






old £5 note goes out of circulation today - so you might not be able to spend it


we’ve had since september 2016 to get used to the new polymer £5 notes - and now the day is finally here when it’s time to say goodbye to the old style one.here’s everything you need to know about today’s switch over... jim dyson via getty images the old-style £5 note featuring elizabeth fry goes out of circulation on 5 maywhen do the old £5 notes stop being legal tender?the paper note, which features social and prison reformer elizabeth fry, ceases to be legal tender on friday 5 may.does this mean i can’t spend my old £5 notes in the shops any more?in theory, yes. shops, bars and restaurants may still accept the old note but they are within their rights not to. pa archive/pa images governor of the bank of england mark carney with the new polymer £5 note featuri...






energy storage breakthrough could boost ev range and slash charge time


the technology was originally being developed for mobile devices -- researchers wanted to create a transparent polymer for google glass-like applications -- but once the team discovered the energy storage potential of the material it refocused its efforts. now it believes the polymer could be more energy-dense than lithium ion, holding 180 watt-hours per kilogram, while lithium ion holds around 100-120 watt-hours per kilogram.however, the technology has some drawbacks. its capacity to charge quickly means it loses charge relatively rapidly, too. leaving a supercapacitor car on your driveway for a month would see it lose most of its charge, for example. so it's likely the first cars offering this tech would come with a small conventional battery, too. nonetheless, while it may still be ear.






new £5 note won't be taken out of circulation, bank of england says


the new £5 note will not be taken out of circulation, the bank of england said on wednesday, despite concerns that it contains animal fat.the bank said it “recognises the concerns raised” about the trace of tallow but said the decision has been made not to withdraw the notes and to issue the new £10 polymer note as planned in september.the bank said producing notes is “complicated” and that 275 million £10 polymer notes have been printed since production began last august, at a cost of £24 million.additionally, £46 million has been spent on printing the £5 polymer note, costs that would have to be incurred again in the event of a withdrawal and reprinting of the currency. joe giddens/pa wire the bank of england has said that the £5 note will not be taken out of circulation.vegans and relig






peso bills made out of thin, durable plastic to hit the streets in uruguay


uruguay will put into circulation its first peso bills made out of plastic, which will be waterproof and should be harder to counterfeit.the central bank (bcu) will issue 10 million plastic bills of 50 pesos in commemoration of its 50th anniversary, el pais newspaper said.the bcu board said a statement that the bills, made out polymer, can stay in circulation up to four times longer than the paper ones."this is the right time to issue the first banknotes in the country made out of polymer, a material that according to previous experiences in other parts of the world has a resistance that extends their life and therefore are more environmentally friendly", the board said.britain's new money is plastic, easy to launder (in machine)this type of banknotes were first introduced in australia ...






spinning synthetic veins and emotion-sensing smartwatch apps


today on in case you missed it: researchers from vanderbilt university are using commercial cotton candy machines to spin synthetic capillaries. instead of sugar, the machines spin polymer fibers which are then coated in hydrogel and backed. the heat malts the polymer and hardens the hydrogel which then acts as scaffolding for human cell cultures.we also take a look at an emotion-sensing smartwatch app from mit. it pairs an iphone 5s with samsung's simband wearable to record and analyze conver ional speech, then guess as to the emotion being expressed. and finally, it's tldr day, where we read you the top headlines of the week that you might have missed while watching american democracy slowly crumble before your eyes.as always, please share any interesting tech or science videos you find






researchers treat ear defect by growing implants from cells


first, the scientists built scaffolds based on the children's healthy ears using ct scanning and 3d printing. those scaffolds were then seeded with cells from the children's underdeveloped, microtia ears and cultured for three months. the team then implanted the ears in the five patients, who have been continuously monitored ever since. now, the researchers have over two years of follow-up data and the results are promising. none of the children rejected the new ears, four of the five ears developed cartilage after the implantation and though two showed slight distortion after the surgery, three were healthily shaped.there are some things to note. first, this concept isn't new. "for many years, we have tried to harvest cells from people and expand those cells on polymer to grow kind of...






fitbit says that flex 2 didn't explode on its own


"based on our initial investigation, including testing of her device by a leading third-party failure analysis firm, we have concluded that ms. mitchell's fitbit flex 2 did not malfunction," a fitbit spokesperson says. "the testing shows that external forces caused the damage to the device."fitbit's conclusion suggests the flex 2's lithium polymer battery didn't overheat after all. lithium-ion batteries are often the culprit behind exploding devices like the samsung galaxy note 7 or the basis peak wearable (both of which were recalled).for now, fitbit says it hasn't received any other complaints of exploding flex 2s and the company encourages owners to continue wearing the fitness trackers without fear. yep, even while reading a book."the health and safety of our customers is our...






high-capacity magazine used by vegas shooter in high demand


gun enthusiasts can’t get enough of the high-capacity magazines mass murderer stephen paddock reportedly used to shoot more than 500 people in las vegas.the magazines, which hold up to 100 cartridges, are made by surefire, according to a report, and they were sold out on at least three web sites on wednesday morning.surefire, based in fountainvalley, calif., the maker of magazines used by paddock in his attack, according to tmz, was sold out of both the $149 60-round magazine and the $189 100-round magazine.e-commerce site bigarmory.com and gunmagwarehouse.com were also sold out of the items.“our magazines feed smoothly and reliably due to optimal geometry, non-binding coil springs, and nesting polymer followers,” surefire boasts on its site.paddock modified at least one of his cache...






michelin to buy fenner in £1.2 billion deal


french tyre maker michelin has struck a deal to acquire british manufacturer fenner in a £1.2 billion deal.the groups announced the deal after market close on monday, with michelin to shell out 610p per fenner share, a 31% premium to the ftse 250 firm’s closing price on march 16.fenner, based in hessle in east yorkshire, manufactures conveyor belts and reinforced polymer products for mining and industrial markets.it raked in £655 million in revenue last year and michelin said the deal could unlock £30 million in annual cost savings through processing efficiencies and leveraging r&d skills.michelin boss jean-dominique senard said: “mastering high-technology materials is key to creating value in the coming years.“the acquisition will enable michelin to accelerate its growth in this ...






why los angeles streets are being painted white


california officials are hoping their latest attempt to stem the rising tides of climate change leads to a more socially conscious — and cooler — summer.officials in los angeles have been painting streets white to reduce the effect of urban “heat islands” and combat the effects of climate change.the la street services began rolling out the project last may, which preliminary testing shows has reduced the temperature of roadways by up to 10 degrees. the project involves applying a light gray coating of the product coolseal, made by the company guardtop.“coolseal is applied like conventional sealcoats to asphalt surfaces to protect and maintain the quality and longevity of the surface,” according to the company website. “while most cool pavements on the market are polymer based...






for military & space industry, a fire-retardant fabric developed by pune-based t


written by sushant kulkarni | pune | published:october 7, 2017 7:36 am the team from the defence institute of advanced technology that developed the fabric.related newsa nano-engineered polymer fabric, which is highly fire-retardant and resistant to hyper-saline solutions, and can also withstand very low temperatures and ultraviolet radiation, has been developed at the defence institute of advanced technology. the result of three years of research and development, the fabric can have a wide range of applications in the armed forces and space industry.“the fabrication of the material has been done at nanometre or one billionth of a metre. also, various additives that impart the properties to the fabric have been infused at the same scale. for this we have used a method called gra...






this material uses energy from ambient light to kill hospital superbugs


phoenix — a new material that harnesses the power of ambient light to produce bacteria-killing molecules could help stem the spread of hospital infections, including those with drug-resistant bacteria.about 1 in 10 patients worldwide get an infection while receiving treatment at a hospital or other health care facility, according to the world health organization. “contaminated hospital surfaces play a key role in spreading those infections,” said ethel koranteng, a chemist at university college london on april 5 at the materials research society spring meeting.koranteng and colleagues developed a material to make hospital surfaces self-disinfecting. naturally antimicrobial metals such as copper and steel are difficult to sculpt around uneven surfaces. but the new polymer-based mater...






electric eels provide a zap of inspiration for a new kind of power source


new power sources bear a shocking resemblance to the electricity-making organs inside electric eels.these artificial electric eel organs are made up of water-based polymer mixes called hydrogels. such soft, flexible battery-like devices, described online october 13 in nature, could power soft robots or next-gen wearable and implantable tech.“it’s a very smart approach” to building potentially biocompatible, environmentally friendly energy sources and “has a bright future for commercialization,” says jian xu, an engineer at louisiana state university in baton rouge not involved in the work.this new type of power source is modeled after rows of cells called electrocytes in the electric organ that runs along an electric eel’s body. when an eel zaps its prey, positively charged pot...






this space technology makes buildings water proof and flame resistant, real esta


benagluru: the indian space research organisation (isro) has successfully tested a water-based, ready-to-use formulation for civilian use and declared that it can make our homes flame-proof, besides preventing water leakage and cooling the interiors by 5°c to 6°c. it was first developed to protect launch vehicles and has proven effective.ceramic polymer hybrid or caspol as isro calls it has been developed by the vikram sarabhai space centre (vssc). scientists involved in the project say it is a low-cost solution that can be used in residential and commercial buildings.while its low solar absorptivity (0.20%) and high emissivity (ability to emit infrared energy) make it a good temperature controller in sunny weather, it can be applied over the concrete surface of a building to prevent wat..






varroc buys over 70% in automotive accessories maker team concepts, auto news, e


the companies refused to reveal details such as financial terms and the stake involved. according to people in the know, the varroc group bought more than a 70% stake in team concepts for an undisclosed sum.mumbai: the polymer division of the $1.5 billion varroc group acquired a majority stake in bengaluru-based team concepts, a manufacturer of premium automotive accessories for toyota motor, renault-nissan and for the after-market.the companies refused to reveal details such as financial terms and the stake involved. according to people in the know, the varroc group bought more than a 70% stake in team concepts for an undisclosed sum. singhi advisors, a global investment bank focused on niche cross-border m&as, acted as the exclusive adviser to team concepts in the transaction.the deal wi






self-assembling wires could lead to faster processors


the team starts out with the conventional process of using an electron beam to etch patterns on a chip, but that's where much of the familiarity ends. the next step is to lay down a mix of two polymers that naturally separate themselves into patterns. when you place a protective polymer coating on top of those polymers, you force them to self-assemble in a dense, vertically oriented way that produces four wires where there would usually be one.there's a long way to go before you see this method put into practice. thankfully, it promises to be relatively simple. you could use existing chip lithography techniques, and it wouldn't be difficult to add the coating process. this would use well-understood materials, to boot. as such, there's a real possibility that companies could build very ...






car tyres made from trees, grasses in the offing, auto news, et auto


this picture is for representative purpose onlywashington: 'green' car tyres - made from trees and grasses - may soon be a reality, thanks to scientists who have developed a new technology to produce a key molecule in automobile tyres using renewable resources found right in our backyards. conventional car tyres are viewed as environmentally unfriendly as they are predominately made from fossil fuels. the new car tyres produced from biomass that include trees and grasses would be identical to existing car tyres with the same chemical makeup, colour, shape and performance. "our team created a new chemical process to make isoprene, the key molecule in car tyres, from natural products like trees, grasses, or corn," said paul dauenhauer, an associate professor at university of minnesota in the






b&o adds to its wireless speaker lineup with the beolit 17


speaking of design, you can expect similar premium materials we've seen on other b&o play devices. the beolit 17 retains the aluminum speaker grill and leather carrying strap from its predecessors. the top and bottom is made of what the company calls "a robust polymer" that will stand up to being hauled around as needed. there's also a non-slip tray up top where you can lay your phone down without worrying about whether or not it will get scratched up.of course, when it comes to portable speakers, battery life is a key selling point. with the beolit 17, b&o is claiming up to 24 hours of battery life, certainly enough to get you through an outdoor dinner party or a day at the park. this new model also features a new one-touch connection button that can be set to one of four modes in the...






car tyres made from trees, grasses in the offing, auto news, et auto


this picture is for representative purpose onlywashington: 'green' car tyres - made from trees and grasses - may soon be a reality, thanks to scientists who have developed a new technology to produce a key molecule in automobile tyres using renewable resources found right in our backyards. conventional car tyres are viewed as environmentally unfriendly as they are predominately made from fossil fuels. the new car tyres produced from biomass that include trees and grasses would be identical to existing car tyres with the same chemical makeup, colour, shape and performance. "our team created a new chemical process to make isoprene, the key molecule in car tyres, from natural products like trees, grasses, or corn," said paul dauenhauer, an associate professor at university of minnesota in the






cool gifts to spend your money on : thechive


monocrystalline solar charger with carabiner (free shipping) –when it all comes crashing down, keep your access to communication and navigation technology with this state-of-the-art 8,000 mah monocrystalline solar charger. whether you’re facing hurricanes, tornados, earthquakes or north korea, you’ll be prepared for any grid-destroying catastrophe. of course, it comes complete with a li-polymer battery, with enough capacity to charge your phone up to four times on one charge. if you need to bug out, it’s up for the journey with its dust-proof, shock-proof, water-resistant construction. get yours today, so you won’t be left without power tomorrow! if you snag one now, you’ll get fast free shipping!






physical chemistry - what is the purpose of the carothers equation?


it is an equation useful for describing the behaviour of a large system, not predicting the fate of a few monomers. polymerization is a stochastic process—if we only have 80 monomers, the resulting polymer molecules will vary wildly in length if we perform the experiment several times (and logically, could not ever have an average degree of polymerization of 100), and the equation could not provide much insight into the results. however, 80 monomers is a very tiny quantity. if we take one of the monomers used to make pet, terephthalic acid, at 166.13 g/mol works out to around $2\times 10^{-23}\ \textrm{kg}$ for 80 molecules, a quantity that is almost impossible to actually measure out so it doesn't really matter that the equation doesn't work. at a more practical scale, ...






want to know what's costly and what's cheap after this budget? here's the list


smokers and tobacco consumers will have to shell out more for their indulgence as finance minister arun jaitley continued with the crackdown on cigarettes and tobacco products by increasing taxes in the budget for 2017 . the finance minister, however, made an attempt to make it more affordable for clean energy sources by cutting duties on solar tempered gl , fuel cell based power generating systems and wind operated energy generator. the following is a list of items that will turn costlier:> cigarettes, pan masala, cigar, cheroots, bidis, chewing tobacco > led lamp components > cashew nuts (roasted and salted) > aluminum ores and concentrates > polymer coated ms tapes used in manufacturing of optical fibres > silver coins and medallions > printed circuit board used in






rugged e-skin can heal its cuts and scrapes


the trick is the use of a unique polymer (polyimine) laced with silver nanoparticles. it can still conduct electricity and withstand stress, but its covalent atomic bonds make it both self-healing and recyclable at room temperatures. it just has to use widely available ethanol compounds to patch itself up, and you can degrade the polymers using a recycling solution that separates the silver from the skin in question.any practical uses are a long way off, but they're definitely on the horizon. you can easily use a modest amount of heat and pressure to make the skin wrap around curved surfaces, so it's ideal for smart prosthetics or advanced robots that may need both ruggedness and a delicate grip. all told, e-skin is becoming more of a practical reality outside of the lab.






budget 2017 list: want to know what's costly and what's cheap after this budget?


smokers and tobacco consumers will have to shell out more for their indulgence as finance minister arun jaitley continued with the crackdown on cigarettes and tobacco products by increasing taxes in the budget for 2017 . the finance minister, however, made an attempt to make it more affordable for clean energy sources by cutting duties on solar tempered gl , fuel cell based power generating systems and wind operated energy generator. the following is a list of items that will turn costlier:> cigarettes, pan masala, cigar, cheroots, bidis, chewing tobacco > led lamp components > cashew nuts (roasted and salted) > aluminum ores and concentrates > polymer coated ms tapes used in manufacturing of optical fibres > silver coins and medallions > printed circuit board used in






kc huang probes basic questions of bacterial life


kc huang, 38physiciststanford universityphysicists often ponder small things, but probably not the ones on kerwyn casey “kc” huang’s mind. he wants to know what it’s like to be a bacterium.“my motivating questions are about understanding the physical challenges bacterial cells face,” he says. bacteria are the dominant life-forms on earth. they affect the health of plants and animals, including humans, for good and bad. yet scientists know very little about the rules the microbes live by. even questions as basic as how bacteria determine their shape are still up in the air, says huang, of stanford university.huang, 38, is out to change that. he and colleagues have determined what gives cholera bacteria their curved shape and whether it matters (a polymer protein, and it does mat...






battery operated - why do batteries in consumer electronics get used unevenly?


toys are often supplied with the cheapest battery cells which may be lower capacity, but also have the widest tolerance.to understand this, model each battery as a charged capacitor, say 1000 farads +/- 20 %. then put them in series with the same initial voltage and load them with, say 100 ohms, and simulate or calculate the end of charge using worst case tolerances, say three cells +20, 0, and -20 %.then you will understand. lithium polymer and car batteries on the other hand start at 0.1% then age towards 10% before single cell death at more than -90% tolerance of the initial charge.esr rises and c drops in values towards end of charge rapidly.if you analyze this, then you will understand.i pulled the c value out of thin air for simple understanding, but it depends on the mah hour ratin.






light-powered 'robot' cleans while it crawls


the trick relies on a light-sensitive liquid-crystal material that changes shape very quickly in the presence of light. the researchers engineered it to deform nearly instantaneously when exposed to an led, and relax just as quickly when the light is removed. "this way, the dent moves backwards, creating a continual undulating movement [away from the light]," the team notes. while the polymer looks transparent, it blocks 100 percent of the violet light so that the side facing away from the light remains relaxed. when it's placed upside down, the bulge moves the opposite way, causing the strip to crawl toward the light. while we've seen things like laser-powered steering before and, of course, solar-cell powered devices, it's the first walking device to use light to directly propel it....






2019 polestar 1 first look


the relationship between polestar and volvo has evolved over the years, beginning with a partnership in road racing and eventually leading to creating performance versions of certain volvo production cars such as the c30, the s60 and the v60. today, as its own electric performance brand within volvo, polestar unveiled its first hybrid electric model, aptly named the polestar 1.the polestar 1 looks like a coupe version of volvo's handsome s90 sedan. it has a 2+2 seating configuration and a body primarily constructed of strong, lightweight carbon-fiber-reinforced polymer bonded to a steel understructure. a fixed panoramic glass roof stretches across the top, affording an expansive view of whatever happens to be above you. the wide rear haunches of the polestar 1 are slightly squared-off, an.






asus' zenbook flip s is the thinnest convertible yet


to achieve that slick size, asus says it had to invent a new "liquid-crystal-polymer fan" that's just 0.3mm thin to keep the system cool. if that sounds familiar, it's because microsoft also said it had to come up with its own liquid-cooling system for the surface pro 3.the flip s runs windows 10 s, packs a fingerprint sensor for secure logins via windows hello and uses a powerful intel core i7 chip and a 1tb ssd, which should offer speedy performance. in fact, the cpu can achieve up to 3.5-ghz boost speeds, which is impressive. its 13.3-inch 4k display, surrounded by a 6.11mm bezel on the vertical sides, supports active stylus input. it's not yet clear if the company will be throwing in an asus pen with notebook, though. the flip s will start at $1,099 when it retails in september. a...






silicone injections could kill you, fda warns


want a nicki minaj-sized butt?  steer clear of silicone.the fda just released a warning against using injectable silicone for contouring, enhancement and plumping, cautioning that the polymer can cause serious damage.“silicone spreads and migrates easily inside the body, which may worsen adverse events and make surgical attempts to remove the silicone oil more difficult or impossible,” the fda said in a statement.“silicone, when injected into areas with many blood vessels such as the buttocks, can travel to other parts of the body and block blood vessels in the lungs, heart, or brain. this can result in permanent damage to those tissues and lead to stroke or death.”injectable silicone, which is different from silicone used in breast implants and silicone used for a specific eye pr...






new £5 note 'grammar error' fails to stoke passions, even among pedants


an unlikely punctuation row has erupted over the new £5 note following claims there is a “grammar error” printed on the currency.the telegraph ran a story on friday with the headline: “the new £5 note has a major grammar blunder...but have you spotted it?”it featured criticism from literature experts, who took issue with the quote from winston churchill which appears on the note.the new polymer currency, which was brought into circulation in september last year, includes the famous quote: “i have nothing to offer but blood, toil, tears and sweat.” pa archive/pa images a row has erupted over punctuation on the new £5 note, featuring winston churchill.but it seems some have taken issue with the fact that this does not appear in quotations marks and does not include a ...