Implantable wireless biosensor monitors cerebral blood flow

first_imgResearchers have created a new medical sensor that promises to revolutionize the ability of doctors to treat brain aneurysms. The device, which is battery-less, is a capacitive sensor with an inductor. It can be implanted directly in patients’ brains and, oddly enough, that’s significantly less invasive than the most common treatment the medical profession uses today.Robert Herbert and Woon-Hong Yeo, both from the Georgia Institute of Technology, described the device in a recent edition of Advanced Science . The work was done with colleagues at Georgia Tech and at Hanyang University in South Korea.The miniaturization of biomedical sensors coupled with efficient wireless protocols have led to a new generation of medical sensors with a profound impact on the healthcare sector. Even stethoscopes are getting revolutionary updates to better help manage health information.The latest microelectronics technology has been particularly beneficial for implantable solutions, helping them to become extensible biosensors. The industry is rising to meet technological challenges involving wireless monitoring capabilities, reliability, and production scalability. They are also being manufactured using new materials more compatible with tissues and blood vessels.The Georgie Tech sensor benefits from these advances. The sensor is implanted in the blood vessels of the human brain, thus helping doctors to assess any abnormalities that can cause patient death. The sensor is composed of biocompatible polyimide, two layers created by silver nanoparticles, a dielectric and a soft polymeric encapsulating material. A coil is powered through electromagnetic energy harvested by another device located outside the body. The capacity of the implanted sensor changes according to blood flowing, which alters the output signals of a third coil located outside the body. The device can detect changes in blood flow of just 0.05 milliliters per second (m/s).In the laboratory, capacity changes were measured at 6 cm distance from a sensor implanted in the flesh to stimulate brain tissue.The sensor uses inductive coupling to allow wireless detection of the biomimetic hemodynamics of the cerebral aneurysm. The researchers said the sensor is easily constructed with 3D aerosol jet printing to create conductive silver traces on elastomeric substrates, which reduce costs and accelerate production. This technique allows the creation of very small electronic functions without using traditional lithographic processes, thus obtaining a microelectronic structure suitable for implants in the field of micro-medicine.Currently, the healing of cerebral aneurysms is monitored by repeated angiographic imaging, which requires injecting the patient with imaging dyes; the process is considered highly risky for the patient. The use of the new sensor could allow more efficient evaluations without the use of imaging dyes.Yeo, an assistant professor at Georgia Tech’s George W. Woodruff School of Mechanical Engineering, said, “The beauty of our sensor is that it can be seamlessly integrated into medical stents or flow divisions that clinicians are already using to treat aneurysms.”The sensor combines an LC circuit (capacitance C and coil L of the sensor), thus forming a resonant circuit with a frequency proportional to f = 1 / (2π√LC). This method of reading, with respect to the frequency domain method for observing impedance variations, has been shown to reach longer reading distances (Figure 1). Figure 1: Schematic and equipment overview of the battery-less wireless system with an implantable flow sensor and two external antenna coils [Source: Advance Science]The analytical and experimental studies of the team have identified electrical characteristics for the correct optimization of the measurement. A correlation between the quality factor of the sensor, the coupling coefficient, and the transfer coefficient define a critical value for the number of winding of the coil with a diameter of the order of 100 µm to reach high efficiency. Coils with 44-53 winding and 30 mm in length allowed longer reading distances. The resulting coils have inductances between 1.5 and 1.9 µH, and the average induced power is of the order of 1.2 mW for about 40/50 winding.These tests use capacities from 150 to 220 pF to obtain low resonance frequencies between 10.2 and 12.2 MHz. Changing the sensor capacity does not affect the induced power, but reduces the quality factor, producing a less pronounced resonance peak.Transdermal sensors of this type can be applied to the skin for monitoring various medical parameters which, if properly controlled, can help cure diseases. Medical devices generally combine microelectronics and micromechanics, representing, in fact, a perfect MEMS. They can also monitor glucose and blood pressure, treat chronic pain, or even administer medication.>> This article was originally published on our sister site, EE Times: “Wireless, battery-free sensor for brain aneurysm treatment.” Share this:TwitterFacebookLinkedInMoreRedditTumblrPinterestWhatsAppSkypePocketTelegram Tags: Medical, Wireless center_img Continue Reading Previous Swissbit: hardware-based security solutions to protect data and devicesNext Alibaba cloud hosts new high-performance AI inference chiplast_img read more

Roberts reveals Superwash fined for cheating customs

first_img Related Items:#magneticmedianews, #superwashfinedforcheatingcustoms Facebook Twitter Google+LinkedInPinterestWhatsApp Facebook Twitter Google+LinkedInPinterestWhatsAppBahamas, April 24, 2017 – Nassau – Progressive Liberal Party (PLP) Chairman Bradley Roberts charged that Free National Movement Freetown candidate and businessman Dionisio D’Aguilar, knowingly and fraudulently altered the original invoices issued by Whirlpool Corporation on a shipment of 27 commercial washing machines.D’Aguilar owns Superwash Limited. On January 29, 2014, the company admitted that it submitted a false declaration and paid a $15,000 fine.D’Aguilar said in a statement yesterday that the company was the victim of fraud by an unscrupulous broker and the loss was significant.Roberts has said he takes no glee or pleasure in disclosing the information but “the public needs to know.”In a statement yesterday, D’Anguilar said he was not surprised by Roberts’ attempts at political espionage and skullduggery, because as usual, he has once again exposed himself for being the “political hack and buffoon that he is”.“What Mr. Roberts thought was a bombshell for him has actually blown up in his face”, he said.In recent times, the PLP has come under attack following the scandal surrounding Minister of Education, Jerome Fitzgerald.Dionisio D’Aguilar (right) standing infront his Superwash business.#MagneticMediaNews#SuperwashFinedForCheatingCustomslast_img read more

The Government has a very clear guiding vision for a better future

first_imgFacebook Twitter Google+LinkedInPinterestWhatsApp#Bahamas, March 9, 2018 – Nassau – Deputy Prime Minister and Minister of Finance, the Hon. K. Peter Turnquest said to properly understand the Government’s fiscal consolidation strategy and the state of the public finances at the mid-point of the 2017/18 fiscal year, it is necessary to begin with a realistic and thorough assessment of the gravity of the fiscal challenges that this Government Administration inherited from the previous administration.“Irrespective of the baseless and empty rhetoric that we have heard following the presentation of the Mid-Year Statement, our Government does have a very clear guiding vision for a better future for Bahamians, with both a stronger economy and enhanced job opportunities.  We also have a plan for getting there,” the DPM said during his Contribution to the 2017/18 Mid-Year Budget Debate in the House of Assembly, Wednesday, March 7, 2018.He said the present administration elaborated on their vision and plan in its 2017 Manifesto, in the Speech from the Throne, as well as in the May Budget Communication.“As I made amply clear in the Budget Communication, however, we must as a priority addresses the fiscal mess that we inherited from the party opposite. We simply cannot, and will not, spend recklessly as did the previous administration without due regard for the financial resources available.“Ours is now the task of putting order in the public finances of our nation to arrest the seemingly inexorable rise in the burden of Government debt that hangs like the proverbial albatross around the neck of Bahamian society and our economy.”The DPM said it is imperative that the burden of debt is returned to lower and more sustainable levels in order to free up the critical resources that are necessary to fully implement the action plans within the Government’s socio-economic growth agenda as promptly and effectively as possible.He explained that when the burden of Government Debt represented a more manageable and sustainable 30 per cent of GDP, the Government’s interest payments on the debt accounted for some 10 cents of every revenue dollar.“Last fiscal year, with a debt burden of 57.6 per cent of GDP, interest payments chewed up almost 14.5 cents of every revenue dollar.“Were it possible to return to a burden of debt under which interest payments again accounted for 10 per cent of revenues, our annual interest payments would be appreciably reduced.“At the 2017/18 level of revenues, the savings would be on the order of $75 million.  Those are precious financial resources indeed that could make a significant contribution to the advancement of the Government’s agenda for growth through, for example, supplementary investments in education, health or infrastructure.”He said it needs to be stressed that much work needs to be done to get the country to the type of debt burden objective that would be preferable. However, the Government is firmly committed, through its concrete fiscal consolidation plan, to getting the country moving in that direction.DPM Turnqest said as a first step requires the elimination of the annual Government deficit that is the direct cause of increased borrowing.He said, “Eliminating the deficit and getting to a lower debt burden are also vital to recreating the fiscal room to manoeuvre that is prudently required to allow the country to deal with unforeseen economic and other shocks, such as hurricanes, that may present themselves in the period ahead.”By: Llonella Gilbert (BIS) Related Items: Facebook Twitter Google+LinkedInPinterestWhatsApplast_img read more

Who Would Buy Newsweek

first_imgOne might assume that Newsweek could muster just as much interest. In fact, some parties apparently have already expressed an interest. Editor Jon Meacham told the New York Observer that he was contacted Wednesday by “two billionaires” who inquired about buying the magazine. Meacham himself said he’d consider rounding up some investors to place a bid. And then there was Henry Blodget, CEO and editor-in-chief of Business Insider, who offered only $1. (Remember OpenGate Capital’s $1 acquisition of TV Guide from Macrovision in 2008?)Jokes aside, I polled a small handful of our sources in the M&A market to pull together a list of companies/publishers that may make good suitors for Newsweek. Among them were OpenGate, Reuters, Politico, Dennis Publishing (owner of The Week), Newsmax, Tina Brown’s the Daily Beast and the Huffington Post. I fired off e-mails to reps at all but Reuters and the Daily Beast but couldn’t immediately reach any for comment.Some, of course, seem more likely than others. Upstart Politico, which is backed financially by Allbritton Communications owner Robert Allbritton, would make an interesting suitor if for no other reason than it was co-founded by Washington Post defectors John Harris and Jim VandeHei. Newsmax, which one source tells me will “very possibly” make a move for Newsweek, would be an interesting buyer because the Republican news monthly effectively could  snuff out a liberal-leaning rival. I’m sure Dennis Publishing owner Felix Dennis is still flush with cash after the sale of Maxim. But would the outspoken entrepreneur actually get involved?No doubt, it will be difficult for any potential player to justify buying Newsweek. The lag time between closing a deal and somehow making it profitable again would be long and weighed down with additional losses. A strategic buyer with deep pockets would make the most sense—a company that thinks buying Newsweek would add to the value/profitability of its own core business. That’s essentially what happened with Bloomberg and BusinessWeek. Not surprisingly, though, Bloomberg already has said it is not exploring a bid for Newsweek. Would others like Time magazine parent Time Warner or The Economist Group be willing to take the risk? I’m not so sure. After years of hefty losses, the Washington Post Company Wednesday said it had hired media and entertainment investment bankers Allen & Company to explore a sale of ailing Newsweek magazine.What does the market look like for a sale of Newsweek, a magazine that has been losing millions of dollars year-after-year? In 2009, Washington Post Co.’s magazine division, (which also included Budget Travel, until it sold in December) reported an operating loss of $29.3 million. “The losses at Newsweek in 2007 to 2009 are a matter of record,” Washington Post Co. chairman Donald E. Graham said. “Despite heroic efforts on the part of Newsweek’s management and staff, we expect it to still lose money in 2010.”Just last year, with the economic recession still rolling, several interested parties—including Joe Mansueto, ZelnickMedia and Platinum Equity— stepped forward when McGraw-Hill put BusinessWeek, a magazine that reportedly lost more than $40 million the year before, on the block. It eventually was acquired by Bloomberg LLC for only $5.9 million, after tax.last_img read more

Is Mobile The Next Big Bump For City and Regional Mags

first_imgT.J. Raphael is the Associate Editor of FOLIO:. Follow her on Twitter: @TJRaphael The mobile Web has been a challenge, to say the least, for even the largest content publishers, and when it comes to city and regional magazines, strategies range from exploratory to non-existent. This month’s issue of FOLIO: has put a spotlight on city and regional magazine publishers and their strategies for reaching audiences, and advertisers, in the digital marketplace—our report shows that some publishers in this market are, in fact, responding aggressively to the changing marketplace despite previously held reservations.  “Most city and regional magazines are struggling to grow digital divisions because we’ve been print publications all along,” Ralph Martinelli, publisher of New York-based 55,000-circ Westchester Magazine, told FOLIO: in our April issue. “We’re expanding our digital division into a separate entity—one of our main goals is to do a tremendous amount of daily digital-only content that does not appear in print, and we’ve brought in digital-only editors. From a sales point of view, our digital-only reps partner with the print ad reps to present complete packages that includes print, digital and events.” The mobile, digital advertising market could be the next big thing for city and regional magazines—at least according to a new forecast from BIA/Kelsey, a local media and advertising research and consultancy firm.The firm predicts that mobile local advertising revenues will grow from $1.2 billion in 2012 to $9.1 billion in 2017, representing a compound annual growth rate of 43.9 percent. For the total U.S. mobile ad spending market, the firm estimates this sector to grow from $3.2 billion in 2012 to $16.8 billion in 2017.“This puts locally targeted mobile ads at 38 percent of overall U.S. mobile ad spending in 2012, growing to 54 percent in 2017,” a statement from the company says. While search and display is top of mind, the firm notes that other areas of mobile are also growing:Display advertising applied to apps and mobile Web inventory is estimated to grow from $379 million in 2012 to $2.7 billion in 2017.Search will grow from $704 million in 2012 to $5.7 billion in 2017.SMS messaging will grow from $101 million to $162 million in 2017.Video distributed within apps and mobile Web inventory will grow from $38 million in 2012 to $515 million 2017.Since local mobile ad revenue is estimated to account for a whopping 54 percent of overall U.S. mobile ad spending, city and regional magazines are well positioned to tap the national advertising market in ways they never dreamed of. Local communities not only trust city and regional mags, but these brands have the audience infrastructure and local knowledge to offer national ad partners exciting new options in their quest for local ad messaging.last_img read more

SwitchGuard keeps your Nintendo Switch safe from thieves filthy paws

first_imgThe SwitchGuard is pretty self-explanatory. Pintoro It’s safe to say just about everyone wants a Nintendo Switch, making it a prime target for thieves.Pintoro is offering deterrent in the form of SwitchGuard, a clear acrylic lockbox designed to keep the portable console safe from unwelcome hands, as previously reported by Nintendo Life.”The best way to deter theft of your Nintendo Switch at a tournament, in your dorm, in an office, or in your home!” the company wrote. The 29 best games on the Nintendo Switch Post a comment Gaming Accessories Consoles 29 Photos Now playing: Watch this: 2:38 Charge your Nintendo Switch over-the-aircenter_img The box costs $50, which is pricey but cheaper than replacing your Switch if it gets snatched. Nintendo sold more than 8.7 million units of the Switch between its March 2017 launch and November 2018, and it’s expected to sell 17.3 million worldwide in 2019, so there are no doubt plenty of concerned owners out there.First published at 6:31 a.m. PT.Updated at 7:20 a.m PT: Adds Pintoro comment.Nintendo Switch review: Pure fun on a big-screen TV or on the go.Super Smash Bros. Ultimate is out: Here’s everything you need to know. The top lock stops people from getting at the Switch inside, while a cable lock and slot secure the SwitchGuard itself. It also has numerous cutouts for ventilation — Switches can get pretty hot! — and for you to run various cables through.The company acknowledges that the box is more of the deterrent than an absolute security solution. It could be smashed open with a hammer when you bring it to a Super Smash Bros. Ultimate tournament.”The SwitchGuard is an excellent option for deterring thieves from picking up your Switch and just walking away,” Pintoro wrote in an emailed statement. 0 Share your voice Tags Nintendolast_img read more