Mainland China virus cases exceed 40,000; deaths rise to 908 Sports Related Videospowered by AdSparcRead Next As fate of VFA hangs, PH and US forces take to the skies for exercise Senators to proceed with review of VFA Taiwan minister boards cruise ship turned away by Japan PLAY LIST 01:31Taiwan minister boards cruise ship turned away by Japan01:33WHO: ‘Global stocks of masks and respirators are now insufficient’01:01WHO: now 31,211 virus cases in China 102:02Vitamin C prevents but doesn’t cure diseases like coronavirus—medic03:07’HINDI PANG-SPORTS LANG!’03:03SILIP SA INTEL FUND Don’t miss out on the latest news and information. Where did they go? Millions left Wuhan before quarantine Chinese-manned vessel unsettles Bohol town The Aces also take pride in their defense, and Alaska could also use this game to measure its trump card when it tries to defend Romeo and Pringle, who combined for 87 points in the first two GlobalPort games.“They are special players and deserve special defense,” Alaska assistant Louie Alas told the Inquirer over the phone yesterday, not hiding the fact that they are preparing hard to hopefully limit the production of Romeo and Pringle.“And they (Romeo and Pringle) know that,” Alas added. “They know that they are the focal points of their team.”Meanwhile, that Star team which GlobalPort manhandled also shoots for its first win, clashing with NLEX in the 7 p.m. contest.ADVERTISEMENT We are young Shanghai officials reveal novel coronavirus transmission modes EDITORS’ PICK MOST READ PH among economies most vulnerable to virus Little Olympics champ brings triumphant act to Youth Games “We’re trying to put more emphasis on team defense,” Pumaren said after going 2-0 last week with an impressive win over Star. “It’s still an early gauge for us. The real test will be in the coming games.”One of those games happens today at 4:15 p.m. at Mall of Asia Arena in Pasay where Terrence Romeo, Stanley Pringle and the rest of the Batang Pier put the only remaining unbeaten record on the line against an Alaska side that wants to get going so badly after two straight defeats.FEATURED STORIESSPORTSGinebra teammates show love for SlaughterSPORTSWe are youngSPORTSFreddie Roach: Manny Pacquiao is my Muhammad AliRomeo and Pringle have been unstoppable in their first two games and will obviously again be the main guns that Pumaren would use to shoot down the Aces.Alaska will be close to full force when it comes into this game, with Vic Manuel and Ping Exciminiano returning after team-imposed suspensions and Calvin Abueva to play for the first time this season after missing the Aces’ first two games because of a muscle bruise. Smart hosts first 5G-powered esports exhibition match in PH Franz Pumaren has the two most explosive guards in the PBA and knows that for his GlobalPort crew to be a force in the Philippine Cup, playing defense would be the key.And he is only too willing to take on the tournament’s powerhouses to be able to gauge how good his team has become.ADVERTISEMENT Smart’s Siklab Saya: A multi-city approach to esports View comments
CDC supports CARPHA in Zika PR Campaign materials to region Facebook Twitter Google+LinkedInPinterestWhatsAppProvidenciales, 05 Feb 2016 – Zika has done the dastardly now; three are dead in Colombia according to that country’s Ministry of Health; which also shared that 2,100 pregnant women had the virus. These are the first Zika-related deaths since the mosquito borne illness started making headlines. Airline and cruise ship companies are now also allowing pregnant or preparing to be pregnant staff to opt out of stops to destinations where Zika cases are recorded. Sperm banks in the US are now in the process of drafting a Zika virus policy, since it has been confirmed that the illness which has the potential to give babies brain damage, can also be spread through sex. Facebook Twitter Google+LinkedInPinterestWhatsApp Turks and Caicos Premier says nation ‘elated’ over removal from Zika list; praises CARPHA and CARICOM Related Items:sperm, ZIka Recommended for you No Zika reports for TCI
Explore further © 2010 PhysOrg.com As the researchers explain, the key to improving an LED’s energy-conversion efficiency lies in extracting the light generated in the semiconductor with the highest efficiency possible. However, the strong internal reflection in the semiconductor makes efficient light extraction very difficult, since light tends to remain inside the semiconductor. Most techniques to improve the light extraction efficiency have high production costs, but finding a highly efficient, low-cost light extraction technique is essential for popularizing LED lighting.The AIST researchers, XueLun Wang and Mutsuo Ogura, were able to design a semiconductor to take advantage of the effects of evanescent waves for improving light extraction efficiency. As the scientists explain, evanescent waves are a special kind of light existing only near a reflection interface. When two evanescent waves meet, they are efficiently transformed into light. In their experiments, the researchers fabricated a GaAs/AlGaAs nanostructure with V-shaped grooves and even smaller ridges between the grooves. They then deposited a 150-nm-thick layer of SiO2 onto the nanostructure. This design enabled evanescent waves to form and couple at the semiconductor-SiO2 and SiO2-air interfaces on flat planes at the tops of the ridges, resulting in an increase of the amount of light that could be extracted.Photoluminescence studies revealed that the SiO2-coated semiconductor’s light-emitting layer at the ridges was enhanced by a factor of 1.7. According to a press release, the light-extraction efficiency builds upon and exceeds the 50% efficiency of a similar technique, although the exact efficiency of the current design is not mentioned. In contrast, uncoated light-emitting semiconductor materials deposited on flat substrates only enable a few percent of the light generated in the semiconductor to be extracted; for example, GaAs has only a 2% efficiency.One advantage of the new design is that it doesn’t require any significant changes to the conventional LED fabrication process, which should keep fabrication costs low. The method could also be used with other materials, such as indium tin oxide or zinc oxide as the coating, and AlGaInP-based and GaN-based semiconductor materials, which can be used to develop visible LEDs with ultra-high light extraction efficiency. Citation: New way to extract light from semiconductors could lead to ultra-high efficiency LEDs (2010, May 14) retrieved 18 August 2019 from https://phys.org/news/2010-05-semiconductors-ultra-high-efficiency.html The illustration in (a) shows evanescent waves coupling at two interfaces on the flat planes of a ridge. Figure (b) shows the simulated electromagnetic field intensity of the structure. Image credit: AIST. Advances in Solid-state Lighting Promise Higher Energy Efficiency and Greater Design Flexibility (PhysOrg.com) — By fabricating ridges coated with silicon dioxide (SiO2) on the surface of a semiconductor, scientists from the National Institute of Advanced Industrial Science and Technology (AIST) in Japan have shown how to extract light from a semiconductor with an extremely high efficiency. The new technique could lead to the development of low-cost, ultra-high efficiency LEDs for lighting and display applications. With the widespread use of LEDs, researchers estimate that global electricity consumption could be reduced by 10% or more, which could save about $120 billion over the next 20 years. 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.