Napoli captain Marek Hamsik has paid tribute to the departing Pep Reina with the Spaniard set to play in his final game for the club against Torino on SundayThe goalkeeper held a dinner to bid farewell to his teammates at Napoli with Reina set to join Serie A rivals AC Milan at the end of the season as a free agent.Sunday’s game against Torino will be Reina’s final appearance at their San Paolo Stadium with Luigi Sepe set to deputise for the Spaniard in their remaining two games with Napoli currently trying overhaul their four-point gap to league leaders Juventus as they attempt to win their first Serie A title since 1990.“Pepe you were a great teammate. One of the best with whom I had the pleasure to play. A real man and a true leader. You will be missed a lot, for your way of living the locker room and at matches, you are always ready for any joke. I make a big wolf mouth for your new adventure. Thank you for all these years with you and with this shirt. Your companions and this city will not forget you. GREAT PEPE TVB A STRONG EMBRACE ??? P.S There are still 3 games left to us we still believe it until mathematics will not allow it. We will give it our all as always ?? Dreaming is not forbidden” Hamsik wrote on Instagram. Rumour: PSG ready Donnarumma bid George Patchias – August 21, 2019 PSG are ready to make a bid for goalkeeper Gianluigi Donnarumma.According to Italian football new outlet Calciomercato.com, PSG is about to make an offer…The veteran goalkeeper joined Napoli on a loan spell from Liverpool in 2013 and won the Coppa Italia that season, before rejoining the Light Blues on a permanent deal in the summer of 2015 from Bayern Munich.Since then, Reina has made 153 appearances in goal for Napoli and has played an integral role in their title battle with Juventus this season.
Son Heung-min believes that his failure to register a shot on target makes South Korea’s 1-0 defeat against Sweden in their World Cup opener “his fault” and has now apologised to his teammatesThe Taegeuk Warriors had a disappointing game at the Nizhny Novgorod on Monday with their closest chance to scoring was when Hwang Hee-chan headed wastefully wide in the closing moments.After a short delay on deciding whether Kim Min-woo’s foul on Viktor Claesson was indeed a penalty call through the Video Assistant Referee (VAR), Andreas Granqvist stepped up and scored the only goal of the game for Sweden after the referee decided that it was indeed a penalty.Throughout the encounter, South Korea struggled to test the Sweden defence with Son taking full responsibility for their ineffectiveness in front of goal.“I’m still disappointed about my performance and feel very, very sorry for my teammates because if we don’t score, it’s my fault, because I need to take the responsibility,” said the 25-year-old, as quoted by The Independent.Euro 2020 qualifiers round up from group F George Patchias – September 6, 2019 Euro 2020 qualifying Group F saw Scandinavian neighbours Sweden and Norway keep the race for the groups second automatic qualifying spot alive.Spain had already…Son compared the different roles he has at both South Korea and Tottenham.“Of course it is a bit different, because when I play at Tottenham, every player is one of the best players,” he said.“Sometimes, when I play for South Korea, I need to give the pass to the other players and sometimes, it is a bit different than Tottenham.”South Korea will next face Mexico on Saturday at the Rostov-on-Don.
Graeme McGarry tells Alex McLeish to select players in form ahead of Scotland’s game against Albania.The Scotland national team head coach faces a selection dilemma ahead of the team’s UEFA Nations League doubleheader against Albania and Israel due to player withdrawals.However, McGarry insists McLeish must select players who are currently playing well for their club sides.“James Forrest has been outstanding for Celtic, and it is one of life’s great mysteries why he is yet to score in 24 appearances for the national side. He is due for a really big performance for his country, and there would be no more opportune time to provide it,” McGarry said, according to Evening Times.“I’m a great believer in going with players that are in form if you have any, and mercifully we do in the shape of Ryan Christie. The former Inverness man has really made his mark at Celtic lately, and he deserves a chance to transfer that form to the international stage.”“Beside him, is the tantalising prospect of Ryan Fraser finally getting a chance to shine in his natural position.”Alex McLeish: We were nervous in parts of the game Boro Tanchev – March 24, 2019 Scotland coach Alex McLeish admits his players were a bit nervous during the away game at San Marino.“He has been causing havoc in the English Premier League for Bournemouth playing off the left, so it is absolutely essential he is deployed there for Scotland. If you play him where he is effective, he will produce for you.”“He has the most assists so far this season in the EPL with six, eclipsing the likes of Eden Hazard, and has also chipped in with four goals.”“Up front, I would have liked to have tried out Paterson, but with him filling in at right-back, I would go with Matt Phillips. He has the best mix of experience, physical presence and pace to perform the role of the men available.”I still think this is a decent enough team despite having Supergran, PC Murdoch and Groundskeeper Willie on the bench…https://t.co/flc2DmXyXR #bbcsportscot via @bbcsport— Graeme McGarry (@Graeme_McGarry) November 16, 2018
In a press release, ninety-nine percent of all wildland fires on that occur on the Chugach National Forest are caused by humans. Everyone plays a role in preventing human-caused fires. Campfires left unattended could potentially result in an unplanned wild fire ignition which could threaten public safety and fire fighters. Facebook0TwitterEmailPrintFriendly分享The Chugach National Forest fire danger status is very high over most the forest. Over the weekend a fire (Trail Lake Fire) broke out at mile marker 27 of the Seward Highway on Kenai Peninsula Borough land. Firefighters from University of Alaska at Fairbanks Nanook Firefighting Crew were called to assist. Smoke jumpers were engaged and a 20 person fire crew is mopping up, utilizing water and hand tools to extinguish any remaining heat sources. The low smoke fire was approximately three acres in size and is now contained. Extinguish all campfires completely before leaving the area – fires should never be left unattended.Please use these guidelines to extinguish campfires:Allow the campfire to completely burn to ash, if possibleDrown all embers, using lots of water, until the fire no longer hissesStir the ash and water with a shovel, stick, or other toolScrape any remaining logs to remove possible embersMake sure everything is cold to the touchIf water is not available, mix sand or wet dirt into the fire pitDo not bury the fire – it will continue to smolder and may ignite roots and duff below the surface
Speeding to the future The myriad benefits of high-speed rail go far beyond the strict monetary alternative to cars and planes. For one thing, most high-speed trains are electric, and as energy generation moves away from fossil fuels, this means rail becomes significantly greener than airplanes or cars — which is why Democrats like Ocasio-Cortez included it as part of the Green New Deal. Then there are the benefits to the communities along the route, and the jobs created during construction and during use. These benefits are something many other countries have seen, not least China, which in 10 years has gone from essentially no high-speed rail, to more high-speed rail than the rest of the world combined. No doubt these are expensive projects, and historically, only public money and support has made them possible. It will be interesting to see, as the projects above progress, if that’s still the case or if private investment is indeed possible. Best case, they all come to fruition and there will be multiple options for cities and states to add high-speed rail. Worst case? They don’t, or the government has to nationalize them (again). As a big fan of trains, I’m obviously hoping for the former. Count me in for a ride on opening day on each and every one. Share your voice Aug 6 • Trump says he’s watching Google ‘very closely,’ slams CEO Sundar Pichai California Both alphabetically and monetarily, this is the first project we should discuss. Running, in theory, from Northern California to Southern, linking Sacramento and San Francisco to Los Angeles and a few points in between, the California High Speed Rail is already well over budget and behind schedule. Despite my love for high-speed rail, and being a California resident, I was never impressed or optimistic about this project. Having now researched it significantly more for this article I’m… well, more neutral I guess. The pros probably outweigh the cons, mostly.The issue is there are lots of easily identifiable negatives. High-speed rail detractors love to point this project as a glowing example of why the whole idea of high-speed rail is bad. I suppose that’s true of any new rail project, and more so with this one given how expensive it’s become. On the negative side, even at the very high speeds the project is hoping for, it will still take 2 hours, 40 minutes to get from Union Station in LA to downtown San Francisco. It’s only 1.5 hours to fly, so even considering travel to and from airports, that’s nearly a wash. It’s hard to believe they’ll be able to keep ticket prices low enough to compete with airfare, which is often around $60 (roughly £45 or AU$85) each way. California HSR Authority says they’re aiming for an average price of $93 to get from San Francisco to LA, in today’s dollars. This is about 50 percent higher than a flight, but still in the “ballpark.” Personally I’d pay an extra $30 not to fly, and hopefully others will find the premium acceptable too. Now playing: Watch this: Tags 29 Photos Aug 6 • President Trump wants social media to catch shooters before they strike. It’s going to be hard For more about why it’s so challenging to have higher speeds on this route, and really why high-speed trains are difficult throughout the US, check out this previous explainer about why US trains are so complicated. Texas The Texas Central Railway is another private venture, this time aiming to connect Dallas and Houston in under 90 minutes. Driving would take at least 3.5 hours. The most interesting aspect of this project is the rolling stock: Japanese Shinkansen trains. Specifically, a variant of the N700 Series already in use throughout Japan. Most recently, the TCR has selected Spain’s Renfe to be the train operator (PDF). Initially it’ll offer technical advice on design and construction of the system, then once it’s up and running, it’ll “run the trains; maintain system components, such as the engines, signals and other equipment; oversee ticketing, passenger loyalty programs and other services.”It’s hoping for departures every 30 minutes, a top speed of 200 mph, ticket prices lower than airfare, and to open in the mid-2020s. Since, barring unforeseen delays, that will beat California’s high-speed rail by years, this will likely be the first “true” high-speed rail system in the US by any definition. Railroads need land, however, and so far Texas Central is having problems procuring it. The project is involved in a legal battle that could prevent it from being able to conduct surveys and acquire property. Referring to the problems, a Texas Central representative told CNET “Texas Central disputes that, saying it is having increasing success in securing land options.” See All Are US trains really that bad? It’s complicated Charger into the future: Inside Amtrak’s new 4,400 hp locomotive I crossed 3 countries in 14 hours on 4 trains and a bus. And I’m not dead. Here’s what it’s like to travel 8 hours across Japan by train From steam to Shinkansen: The massive machines of the Kyoto Railway Museum 28:48 Politics Sci-Tech Roadshow Jul 28 • Apple’s Q3 earnings are all about the iPhone 11 hints 47 Comments Read more about trains Japan has the Shinkansen. France has the TGV. Spain has AVE. China has more high-speed rail than the rest of the world combined. America has… the Acela Express. All 16 stops of it in one section of the country. It reaches its top speed of 150 miles per hour (241 kph) just for a few minutes in one short section, and even that speed is pokey compared to other countries. The Shanghai Maglev reaches 268 mph.But things are changing. Despite significant uphill battles, high-speed rail is coming to other parts of the country. Even the Acela is undergoing improvements that should make the service faster and more convenient. And high-speed rail is one of the principal pillars of the Green New Deal drafted by liberal House Democrats, including Alexandria Ocasio-Cortez. It proposes to overhaul the “transportation systems in the United States to eliminate pollution and greenhouse gas emissions from the transportation sector as much as is technologically feasible,” with high-speed rail as one of the main investments. This article doesn’t speculate on lofty goals like that. It’s not about proposed dream projects, like maglevs and hyperloops, nor is it a list of feasibility studies or “hey, we should check out high-speed rail” legislative initiatives. Instead, I’m going to tackle actual projects either in progress or seemingly about to begin. How high is high-speed? The answer to this question isn’t as obvious as it seems. Title 49, subsection V, Part D, Chapter 261(c) of the US code says “sustained speeds of 125 mph or greater.” Other countries would call that “adorable” and “200 kph.” Even other portions of the US government say 150 mph or greater. For our purposes, we’ll go with anything above 125. This is faster than traditional trains, and given the limitations of the tracks throughout the US, a pretty reasonable increase in speed. Also, an article just about US trains capable of over 150 mph would be super short. Other parts of the country are working on improving their “regular” rail so that it’s a bit faster, like Chicago and elsewhere, but that’s for another article. Nevada (and California) A rail link between Los Angeles and Las Vegas has been in the works, on and off, for years. A company called XpressWest got the farthest in the process, and in September it was purchased by Brightline (yep, same one). This is another hard sell, since the current plans only get them from Las Vegas to Victorville. Victorville is Los Angeles as much as Philadelphia is Manhattan. So your average LA resident would need to get to Victorville, nearly two hours by car, then board a train for Brightline’s estimate of two hours to Las Vegas. A flight takes just over an hour, or alternately, it’s a fantastic drive in the same amount of time. There are other desert cities near Victorville, of course, so the trains probably won’t be empty. But as you can probably guess, the idea is to link up to the California regular and eventual high-speed rail network and go all the way to LA’s Union Station. It expects to begin construction this year, with initial service in 2022. Seems optimistic, but I wish it luck.Though no rolling stock has been decided yet, it wouldn’t be surprising if XpressWest plans to use Siemens Chargers since that’s what Brightline is using in Florida, and Siemens is already building a bunch in its California plant for Amtrak’s Pacific Surfliner route. Northeast Corridor (New England, New York, New Jersey, Pennsylvania, Delaware, Maryland and DC) The Acela Express was America’s first, and arguably only, high-speed rail. I say “arguably” because in most parts of the world a top speed of 150 mph, and average speed less than half that, hardly qualifies as “high-speed.” It connects Boston to DC with 14 stops along the way, including New York and Philadelphia. The speeds are almost entirely due to limitations on the tracks and other infrastructure, which is why Amtrak has extensive plans for upgrading the tracks it owns, as well as working with states along the route to improve the non-Amtrak sections. The Acela trains were always far more capable than the tracks they were on, so even seemingly small improvements like raising speeds on a 30 mph section to 50 mph will reap big benefits overall. Many of the improvements will also benefit standard rail service in the area as well. Amtrak is also getting new trains, due in service in 2021. These high-tech models from Alstom are capable not just of higher speeds, but have better tilt capabilities, so they’ll be faster on the slower sections compared to the current trains. If the infrastructure improvements go as planned, new top speeds of 186 mph will be possible on some segments of the route. US Tech Policy US Tech Policy See trains from all over the world • As well as covering TV and other display tech, Geoff does these tours of cool museums and locations around the world including nuclear submarines, massive aircraft carriers, medieval castles, airplane graveyards and more. You can follow his exploits on Twitter, Instagram and on his travel blog BaldNomad. He also wrote a bestselling sci-fi novel. Aug 7 • Trump’s emissions and fuel economy rollbacks will cost Americans money, study says Going beyond the normal benefits for high-speed rail, California HSR Authority intends for the entire system to run on 100 percent renewable energy to power the trains. Since traveling on these trains would mean fewer cars on the road and fewer passengers on airplanes, the reduction in greenhouse gas emissions should be sizable. With work progressing in the, admittedly easier, Central Valley sections, I’ll be curious to see how this plays out over the next decade(s). Especially since our new governor is far less enthusiastic for the project than our previous governor. Regardless of what happens with the overall project, numerous improvements to the rail infrastructure throughout the state are already underway and will be highly beneficial. Florida Florida has the only private passenger train company in the US: Brightline. In November 2018 it announced it was rebranding as Virgin Trains USA, after Virgin took a minority stake. Hopefully that will turn out better for everyone than what happened on England’s East Cost Main Line. Florida had initially received federal grants to create more high-speed rail, but then governor Rick Scott rejected them in 2011. Some of this route was developed into Brightline. Brightline/Virgin Trains USA currently connects Miami to West Palm Beach, but is too slow to qualify as high speed. However, it’s working on expanding its system north, connecting to Orlando airport via Cocoa. Part of this route will have new tracks on a new right-of-way, allowing speeds up to 125 mph. It uses Siemens Chargers, which we checked out extensively when they were unveiled for the Pacific Surfliner route in Los Angeles. Along with other funding, it’s going public to help get the money it needs. The company has plans to connect to Tampa eventually as well. reading • Is high-speed rail in the US ever going to happen? Travelling 2,600 miles across Europe in a VW camper 14 Photos High-speed trains in the US
A bird flies by the Vedanta office building in Mumbai August 16, 2010.Reuters fileVedanta, a diversified natural resources conglomerate, is facing the liquidation of its mining business in Zambia as the local government has continued with the liquidation process. Vedanta is locked in a dispute with Zambian government, which has accused the Mumbai-headquartered company of defaulting on tax payments and violating the operational license. Vedanta has a controlling stake in Konkola Copper Mines (KCM) in which 20 percent is owned by Zambia’s state mining company ZCCM-IH.It is to be noted that Vedanta had taken the matter to arbitration and made efforts to halt the liquidation process in May. But the Zambian high court appointed a provisional liquidator to dissolve the company. However, contrary to Zambian high court’s order, the seat of international arbitration in Africa stationed at Johannesburg ordered the halt of any sell-off KCM efforts. But the Zambian government has gone ahead with the process and said last month that it expected numerous bids for KCM within weeks.Vedanta-controlled Konkola Copper Mines (KCM) is a major integrated copper producer in Zambia and operates one of the only two mines producing electro-refined copper cathode in the entire region. Its products are mainly exported to countries in South East Asia, China and the Middle East. The Zambian government is also focussing on Vedanta to extract as much tax revenue as possible as Zambia is Africa’s second-biggest copper-producing country after the Democratic Republic of Congo. The country is reeling under high domestic as well as foreign debt. Anil Agarwal, Group Chairman of Vedanta Resources (India) talks during a meeting at the 2018 Investing in African Mining Indaba at the Cape Town International Convention Centre, on February 5, 2018, in Cape Town. The Mining Indaba is the worlds largest mining event in Africa.RODGER BOSCH/AFP/Getty ImagesHowever, Vedanta has denied any wrongdoings. In a statement issued to an online portal Business Today, the company clarified: “Vedanta is clear that KCM has not violated its license conditions. It also received no warning of these alleged breaches before the minority shareholder brought ex parte liquidation proceedings against it. As regards to the allegations of unpaid taxes, Vedanta contends that the Zambia Revenue Authority owed KCM (as of May 2019) over $180 million in unpaid VAT Refunds.”The company officials were expecting to meet Zambian President Edgar Lungu on his visit to India this week to discuss the issue but the Zambian State House has stated that no such meeting is scheduled. “The president is expected to meet representatives from 12 Zambian-based Indian companies, and KCM, whose majority shareholder is Vedanta, is not one of them. His Excellency the President has already stated that the Zambian government will follow the Zambian people’s wish over the KCM issue,” the State House statement read.
Transport contractors and officials of the Bangladesh Chemical Industries Corporation misappropriated hundreds of tonnes of fertiliser valued around Tk 2 billion from the 2015-16 to the 2016-17 fiscal.The contractors claimed they had taken the fertiliser to the buffer warehouse of the state-run BCIC in Santahar, Naogaon, but in reality there was no such fertiliser in the warehouse nor was it taken to the farmers.BCIC looks after the production, import and distribution of fertiliser through traders across the country.In its own probe report, BCIC charged Nabir Uddin Khan, a former BCIC official who was in-charge of the buffer stock warehouse, its former accountant Masudur Rahman, and six fertiliser transportation companies, for the misappropriation of Tk 2 billion worth of fertiliser.The companies are Bulk Trade International, Nabab and Company, Poton Traders, South Delta Shipping and Trading, Rex Motors, and Gramsico Limited.A seven-member team led by BCIC director Lutfar Rahman submitted the probe report to the BCIC chairman on 31 August last.According to the report, a total of 57,936.75 metric tonnes of fertiliser existed on paper with proof of import, transportation and stock, but no fertiliser could be found in the warehouse.BCIC chairman Shah Md Aminul Haq told Prothom Alo that BCIC officials with complicity of contractors filched the fertiliser worth Tk billions.The BCIC investigation report said that Nabir Uddin Khan was the in-charge of the warehouse in March, 2016 while receiving a consignment of fertiliser from the South Delta Shipping.Masudur Rahman took the charge of the warehouse after Nabir’s retirement.When the BCIC started the investigation, Masudur said Nabir embezzled the fertiliser carried by the South Delta Shipping and Trading. However, the BCIC headquarters then paid bills of truck transportation without verifying papers.BCIC deputy director Rezaul Karim, who granted the bills, said he did not notice any flaws in the papers.The Anti-Corruption Commission is also investigating BCIC’s fertiliser misappropriation.Meanwhile, BCIC director (commercial) Abdul Hye told Prothom Alo that Nabir and Masudur had complicity with transport contractors.The contractors carried no fertiliser to the warehouse but collected most of their transport bills.Executive officer of the South Delta Shipping and Trading Moshiur Rahman told Prothom Alo, ”The complaint that has been raised against us is baseless. We handed over the fertiliser to the (BCIC) officials and collected our bills accordingly.”Owner of a contractor company, Kamrul Ashraf Khan, also MP of Narsingdi-2 constituency said, ”We have proof that we carried the fertiliser to the warehouse. The fertiliser inside the warehouse isn’t our responsibility.”BCIC director Lutfar Rahman told Prothom Alo, ”We found in our investigation that a total of 57,936.75 metric tonnes of fertiliser didn’t enter the warehouse.”Masudur’s wife told Prothom Alo that her husband did not want to talk while Nabir could not be contacted after several attempts, but he is apparently a fugitive.*This report, originally published in Prothom Alo print edition, has been rewritten in English by Imam Hossain
The accused being taken to Tangail court. Photo: Tangail A Tangail court on Monday sentenced four persons to death in a case filed over the murder of Zakia Sultana Rupa after gang rape in a running bus on 25 August last year, reports UNB.Women and Children Repression Prevention Tribunal judge Abul Hossain Miah announced the verdict in a crowded courtroom.The condemned convicted are – bus driver Habibur and helpers Shamim, Akram and Jahangir.Besides, bus supervisor Safar Ali was sentenced to seven years imprisonment and fined Tk 100,000.According to prosecution, Rupa, 27, was murdered after gang rape in the running bus while returning to Mymensingh from Bogra.Police recovered her blood-stained body from Panchmail area of Madhupur upazila on that night.Following a post-mortem, she was buried at the town central graveyard as unclaimed body. Later, victim’s relatives identified her.On 28 August, police arrested the five accused from Mymensingh in this connection.On 31 August, police exhumed the body of Rupa and handed it over to her family for burial in a proper manner.On 25 October last, the court accepted the charge sheet against the accused — bus driver Habibur, its supervisor Safar Ali, and helpers Shamim, Akram and Jahangir — in the case.On 23 January, the court concluded the recording of depositions of witnesses in the case when 27 witnesses out of total 32 testified before the court.
bograMiscreants hacked an officer of local passport office at Koigali in Bogra town on Thursday, reports UNB.The victim is Shahjahan Kabir, assistant director of local passport office.Witnesses said some miscreants obstructed Shahjahan around 1:30pm while he was returning home from the office.They chopped him indiscriminately in the head, right leg and a hand. Locals took him to Shaheed Ziaur Rahman Medical College Hospital.Shahjahan, who joined the passport office 6-7 months ago declared a war against corruption and organised brokers in the passport office which might have led to the attack, police said.Shahjahan also introduced a transparent complaint box in the office for passport seekers, additional police superintendent (Media) Sonatan Chakrabarty said, adding that they were trying to arrest the offenders.Meanwhile, in-charge of Shaheed Ziaur Rahman Medical College Hospital police camp Abdul Aziz Mondal, quoting the victim, said some young men on Tuesday demanded extortion from him.
More information: Likai Li et al. Direct observation of the layer-dependent electronic structure in phosphorene, Nature Nanotechnology (2016). DOI: 10.1038/nnano.2016.171AbstractPhosphorene, a single atomic layer of black phosphorus, has recently emerged as a new two-dimensional (2D) material that holds promise for electronic and photonic technologies. Here we experimentally demonstrate that the electronic structure of few-layer phosphorene varies significantly with the number of layers, in good agreement with theoretical predictions. The interband optical transitions cover a wide, technologically important spectral range from the visible to the mid-infrared. In addition, we observe strong photoluminescence in few-layer phosphorene at energies that closely match the absorption edge, indicating that they are direct bandgap semiconductors. The strongly layer-dependent electronic structure of phosphorene, in combination with its high electrical mobility, gives it distinct advantages over other 2D materials in electronic and opto-electronic applications. This document is subject to copyright. Apart from any fair dealing for the purpose of private study or research, no part may be reproduced without the written permission. The content is provided for information purposes only. (Phys.org)—A large team of researchers from China, the U.S. and Japan has developed a more precise means for measuring the various band gaps in layered phosphorene, and in so doing, have found that it possesses advantages over other 2-D materials. In their paper published in the journal Nature Nanotechnology, the group describes their technique and what they observed during their measurements. Citation: More precise measurements of phosphorene suggest it has advantages over other 2-D materials (2016, September 21) retrieved 18 August 2019 from https://phys.org/news/2016-09-precise-phosphorene-advantages-d-materials.html Understanding how flat phosphorus grows Direct observation of the layer-dependent electronic structure in phosphorene. a, The puckered honeycomb lattice of monolayer phosphorene; x and y denote the armchair and zigzag crystal orientations, respectively. b,c, Optical images of few-layer phosphorene samples. The images were recorded with a CCD camera attached to an optical microscope. The number of layers (indicated in the figure) is determined by the optical contrast in the red channel of the CCD image. d, Optical contrast profile in the red channel of the CCD images along the line cuts marked in b,c. Each additional layer increases the contrast by around 7%, up to tetralayer, as guided with the dashed lines. Credit: Likai Li et al. Nature Nanotechnology (2016) doi:10.1038/nnano.2016.171 Journal information: Nature Nanotechnology © 2016 Phys.org Scientists have been studying phosphorene (single layered black phosphorus) for some time because they believe it might be useful for creating new or better types of 2-D optoelectronic devices, similar in some respects to research efforts looking into graphene. Though it was first discovered in 1669, it was not actually isolated until 2014. Since that time, researchers have attempted to study the band gaps (the energy differences between the tops of the valence bands and the bottom of the conduction bands) that exist under various layering conditions because each may represent a unique opportunity for using the material. Prior efforts to find the band gaps relied on fluorescence spectroscopy, but that technique has not offered the accuracy needed for building devices. In this new effort, the researchers took a new approach called optical absorption spectroscopy, which works by measuring absorption of radiation as it interacts with a sample. By conducting multiple experiments, the researchers found that the electronic structure of the material varied significantly when looking at materials created from a range of layers, which, they noted, was consistent with prior theories.In using the new technique, the researchers found that different band gaps aligned well with different applications. 1.15eV, for example, would match well with a silicon band gap and 0.83 eV could be used in optoelectronics because of its similarity to a telecom photon wavelength. Also, they noted that the 0.35 eV band gap could prove useful in creating infrared devices. Overall, they found that the structure of layered phosphorene gives it advantages over other 2D materials for creating new devices—including some instances of graphene.The researchers next plan to actually use their results to create various optoelectronic devices, though they acknowledge that there are still some challenges involved, such as figuring out a way to deal with the tiny flakes and the instability involved in trying to use it. Explore further
State Rep. Frank Foster, center, talks with Todd Callewaert, at left, and George Smolak, before today’s House Commerce Committee meeting. Callewaert and Smolak testified in support of legislation sponsored by Foster.Todd Callewaert, president of Island House Hotel on Mackinac Island, and George Smolak, owner of Legs Inn in Cross Village, traveled to Lansing today to testify in support of legislation introduced by Rep. Frank Foster to help strengthen the state’s economy.Foster invited the two small-business leaders to the House Commerce Committee to discuss House Bill 4958, which mirrors federal standards and other Midwest states by waiving the requirement for employers to pay unemployment insurance taxes on employees working under visas.“I was honored to have two local job providers come to Lansing to discuss the benefits of this important legislation,” said Foster, R-Petoskey. “State lawmakers need to hear perspectives from people who are directly impacted by laws that can deter economic development and job creation in Michigan.”Foster said it doesn’t make sense to require Michigan employers to pay unemployment insurance for non-resident employees because they are required to leave the country shortly after their employment is over.“As Michigan competes at a national level for jobs, businesses and the emerging 21st century economy, we must continue to identify and eliminate the bureaucratic red tape that makes us unique among our peers,” said Foster, chair of the House Commerce Committee. “This is one more step to make Michigan a competitive and attractive place to do business.”Committee members today heard testimony only on HB 4958. 25Sep Local job providers travel to Lansing to testify in favor of Foster legislation Categories: News
iWedia has upgraded its Teatro CI Host Software to be compatible with CI Plus 1.4.The Teatro CI host software now gives full support to CI Plus 1.4.2 and has been pre–certified on a reference platform using the official test suite and test materials.It is a standalone software component, designed to be integrated within the software of the target device, and can be complemented by other software components of iWedia’s product portfolio – for example the Teatro TV Browser, which gives support to HbbTV 2.“CI Plus 1.4.2 is a breakthrough for pay TV operators as the enhancements it brings allow them to get from a CAM the same benefits they used to get from a STB,” said Hervé Creff, VP marketing at iWedia.“The specification will become mandatory in September this year and device makers shall get ready for that date. Integrating Teatro CI Host Software, a robust, reliable, and pre certified software component is definitely a secure way to achieve this objective.”With CI Plus 1.4.2, pay TV operators can now offer a Conditional Access Module (CAM) on which the operator can store its own HbbTV 2 user interface and application.It also supports delivery of video services over IP (unicast OTT or multicast managed IPTV), and multi-stream management for dual tuner configurations.