After a busy run in April, May is a relatively slow month for MMA. You can spend the extra time and money you're not spending on fights on a Mother's Day gift. After you've taken your mother to brunch, check out these fights:
Mike Treadwell vs. Chris Treadwell, MFC 37, May 10: This is the brother vs. brother bout. Watch and record it on AXS, then record it. When you and your brother fight during that Mother's Day brunch, show the fight and tell your mom it could be much worse.
Costa Philippou vs. Ronaldo "Jacare" Souza, UFC on FX 8, May 18: Philippou is riding a five-fight win streak, with his last bout a TKO over Tim Boetsch. Souza is one of the latest Strikeforce imports, and he has a three-fight win streak, a nasty ground game and striking that gets more impressive with every game. Check it out before the Vitor Belfort-Luke Rockhold bout.
Fallon Fox vs. Allannah Jones, Championship Fighting Alliance, May 24: No matter your feelings on Fallon Fox, you probably want to see her fight. Some want to see her get knocked out. Some want to see how the first openly trans fighter has handled the spotlight. You can see her bout with Allannah Jones at Championship Fighting Alliance 11 which will air on AXS TV. Fox-Jones is on the undercard of the event headlined by Strikeforce standout Mike Kyle and Alistair Overeem's brother Valentijn.
Every single bout on UFC 160, May 25: The limited quantity of UFC bouts in May is made up for by the quality of fights at UFC 160. It starts with the main event. Cain Velasquez will test his title in a rematch with Antonio "Bigfoot" Silva, and former champ Junior dos Santos will fight Mark Hunt in a another heavyweight bout. T.J. Grant and Gray Maynard are fighting for the next lightweight title shot. Even the preliminary card has fighters that are really fun to watch, like Khabib Nurmagomedov and Brian Bowles.
Dual-color lasers could lead to cheap and efficient LED lightingPublic release date: 2-May-2013 [ | E-mail | Share ]
Contact: Michael Bishop michael.bishop@iop.org 01-179-301-032 Institute of Physics
A new semiconductor device capable of emitting two distinct colours has been created by a group of researchers in the US, potentially opening up the possibility of using light emitting diodes (LEDs) universally for cheap and efficient lighting.
The proof-of-concept device, which has been presented today, 3 May, in IOP Publishing's journal Semiconductor Science and Technology, takes advantage of the latest nano-scale materials and processes to emit green and red light separated by a wavelength of 97 nanometresa significantly larger bandwidth than a traditional semiconductor.
Furthermore, the device is much more energy efficient than traditional LEDs as the colours are emitted as lasers, meaning they emit a very sharp and specific spectral linenarrower than a fraction of a nanometrecompared to LEDs which emit colours in a broad bandwidth.
One of the main properties of semiconductors is that they emit light in a certain wavelength range, which has resulted in their widespread use in LEDs. The wavelength range in which a given semiconductor can emit lightalso known as its bandwidthis typically limited in the range of just tens of nanometres. For many applications such as lighting and illumination, the wavelength range needs to be over the entire visible spectrum and thus have a bandwidth of 300 nm.
Single semiconductor devices cannot emit across the entire visible spectrum and therefore need to be 'put' together to form a collection that can cover the entire range. This is very expensive and is, to a large extent, the reason why semiconductor LEDs are not yet used universally for lighting.
In this study, the researchers, from Arizona State University, used a process known as chemical vapour deposition to create a 41 micrometer-long nanosheet made from Cadmium Sulphide and Cadmium Selenide powders, using silicon as a substrate.
Lead author of the study, Professor Cun-Zheng Ning, said: "Semiconductors are traditionally 'grown' together layer-by- layer, on an atom-scale, using the so-called epitaxial growth of crystals. Since different semiconductor crystals typically have different lattice constants, layer-by-layer growth of different semiconductors will cause defects, stress, and ultimately bad crystals, killing light emission properties."
It is because of this that current LEDs cannot have different semiconductors within them to generate red, green and blue colours for lighting.
However, recent developments in the field of nanotechnology mean that structures such as nanowires, nanobelts and nanosheets can be grown to tolerate much larger mismatches of lattice structures, and thus allow very different semiconductors to grow together without too many defects.
"Multi-colour light emission from a single nanowire or nanobelt has been realized in the past but what is important in our paper is that we realized lasers at two distinct colours. To physically 'put' together several lasers of different colors is too costly to be useful and thus our proof-of concept experiment becomes interesting and potentially important technologically.
"In addition to being used for solid state lighting and full color displays, such technology can also be used as light sources for fluorescence bio and chemical detection," continued Professor Ning.
###
From Friday 3 May, this paper can be downloaded from http://iopscience.iop.org/0268-1242/28/6/065005/article
Notes to Editors
Contact
1. For further information, a full draft of the journal paper or contact with one of the researchers, contact IOP Press Officer, Michael Bishop.
IOP Publishing Journalist Area
2. The IOP Publishing Journalist Area (http://journalists.iop.org/journalistLogin) gives journalists access to embargoed press releases, advanced copies of papers, supplementary images and videos. In addition to this, a weekly news digest is uploaded into the Journalist Area every Friday, highlighting a selection of newsworthy papers set to be published in the following week.
Login details also give free access to IOPscience, IOP Publishing's journal platform.
To apply for a free subscription to this service, please email Michael Bishop, IOP Press Officer, michael.bishop@iop.org, with your name, organisation, address and a preferred username.
Simultaneous two-colour lasing in a single CdSSe heterostructure nanosheet
3. The published version of the paper 'Simultaneous two-colour lasing in a single CdSSe hetereostructure nanosheet' F Fan et al 2013 Semicond. Sci. Technol. 28 065005 will be freely available online from Friday 3 May. It will be available at http://iopscience.iop.org/0268-1242/28/6/065004/article
Semiconductor Science and Technology
4. Semiconductor Science and Technology is IOP's journal dedicated to semiconductor research. The journal publishes cutting-edge research on the physical properties of semiconductors and their applications.
IOP Publishing
5. IOP Publishing provides a range of journals, magazines, websites and services that enable researchers and research organisations to reach the widest possible audience for their research.
We combine the culture of a learned society with global reach and highly efficient and effective publishing systems and processes. With offices in the UK, US, Germany, China and Japan, and staff in many other locations including Mexico and Russia, we serve researchers in the physical and related sciences in all parts of the world.
IOP Publishing is a wholly owned subsidiary of the Institute of Physics. The Institute is a leading scientific society promoting physics and bringing physicists together for the benefit of all. Any profits generated by IOP Publishing are used by the Institute to support science and scientists in both the developed and developing world. Go to ioppublishing.org.
The Institute of Physics
6. The Institute of Physics is a leading scientific society. We are a charitable organisation with a worldwide membership of more than 50,000, working together to advance physics education, research and application. We engage with policymakers and the general public to develop awareness and understanding of the value of physics and, through IOP Publishing, we are world leaders in professional scientific communications. Go to http://www.iop.org
[ | E-mail | Share ]
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AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert! system.
Dual-color lasers could lead to cheap and efficient LED lightingPublic release date: 2-May-2013 [ | E-mail | Share ]
Contact: Michael Bishop michael.bishop@iop.org 01-179-301-032 Institute of Physics
A new semiconductor device capable of emitting two distinct colours has been created by a group of researchers in the US, potentially opening up the possibility of using light emitting diodes (LEDs) universally for cheap and efficient lighting.
The proof-of-concept device, which has been presented today, 3 May, in IOP Publishing's journal Semiconductor Science and Technology, takes advantage of the latest nano-scale materials and processes to emit green and red light separated by a wavelength of 97 nanometresa significantly larger bandwidth than a traditional semiconductor.
Furthermore, the device is much more energy efficient than traditional LEDs as the colours are emitted as lasers, meaning they emit a very sharp and specific spectral linenarrower than a fraction of a nanometrecompared to LEDs which emit colours in a broad bandwidth.
One of the main properties of semiconductors is that they emit light in a certain wavelength range, which has resulted in their widespread use in LEDs. The wavelength range in which a given semiconductor can emit lightalso known as its bandwidthis typically limited in the range of just tens of nanometres. For many applications such as lighting and illumination, the wavelength range needs to be over the entire visible spectrum and thus have a bandwidth of 300 nm.
Single semiconductor devices cannot emit across the entire visible spectrum and therefore need to be 'put' together to form a collection that can cover the entire range. This is very expensive and is, to a large extent, the reason why semiconductor LEDs are not yet used universally for lighting.
In this study, the researchers, from Arizona State University, used a process known as chemical vapour deposition to create a 41 micrometer-long nanosheet made from Cadmium Sulphide and Cadmium Selenide powders, using silicon as a substrate.
Lead author of the study, Professor Cun-Zheng Ning, said: "Semiconductors are traditionally 'grown' together layer-by- layer, on an atom-scale, using the so-called epitaxial growth of crystals. Since different semiconductor crystals typically have different lattice constants, layer-by-layer growth of different semiconductors will cause defects, stress, and ultimately bad crystals, killing light emission properties."
It is because of this that current LEDs cannot have different semiconductors within them to generate red, green and blue colours for lighting.
However, recent developments in the field of nanotechnology mean that structures such as nanowires, nanobelts and nanosheets can be grown to tolerate much larger mismatches of lattice structures, and thus allow very different semiconductors to grow together without too many defects.
"Multi-colour light emission from a single nanowire or nanobelt has been realized in the past but what is important in our paper is that we realized lasers at two distinct colours. To physically 'put' together several lasers of different colors is too costly to be useful and thus our proof-of concept experiment becomes interesting and potentially important technologically.
"In addition to being used for solid state lighting and full color displays, such technology can also be used as light sources for fluorescence bio and chemical detection," continued Professor Ning.
###
From Friday 3 May, this paper can be downloaded from http://iopscience.iop.org/0268-1242/28/6/065005/article
Notes to Editors
Contact
1. For further information, a full draft of the journal paper or contact with one of the researchers, contact IOP Press Officer, Michael Bishop.
IOP Publishing Journalist Area
2. The IOP Publishing Journalist Area (http://journalists.iop.org/journalistLogin) gives journalists access to embargoed press releases, advanced copies of papers, supplementary images and videos. In addition to this, a weekly news digest is uploaded into the Journalist Area every Friday, highlighting a selection of newsworthy papers set to be published in the following week.
Login details also give free access to IOPscience, IOP Publishing's journal platform.
To apply for a free subscription to this service, please email Michael Bishop, IOP Press Officer, michael.bishop@iop.org, with your name, organisation, address and a preferred username.
Simultaneous two-colour lasing in a single CdSSe heterostructure nanosheet
3. The published version of the paper 'Simultaneous two-colour lasing in a single CdSSe hetereostructure nanosheet' F Fan et al 2013 Semicond. Sci. Technol. 28 065005 will be freely available online from Friday 3 May. It will be available at http://iopscience.iop.org/0268-1242/28/6/065004/article
Semiconductor Science and Technology
4. Semiconductor Science and Technology is IOP's journal dedicated to semiconductor research. The journal publishes cutting-edge research on the physical properties of semiconductors and their applications.
IOP Publishing
5. IOP Publishing provides a range of journals, magazines, websites and services that enable researchers and research organisations to reach the widest possible audience for their research.
We combine the culture of a learned society with global reach and highly efficient and effective publishing systems and processes. With offices in the UK, US, Germany, China and Japan, and staff in many other locations including Mexico and Russia, we serve researchers in the physical and related sciences in all parts of the world.
IOP Publishing is a wholly owned subsidiary of the Institute of Physics. The Institute is a leading scientific society promoting physics and bringing physicists together for the benefit of all. Any profits generated by IOP Publishing are used by the Institute to support science and scientists in both the developed and developing world. Go to ioppublishing.org.
The Institute of Physics
6. The Institute of Physics is a leading scientific society. We are a charitable organisation with a worldwide membership of more than 50,000, working together to advance physics education, research and application. We engage with policymakers and the general public to develop awareness and understanding of the value of physics and, through IOP Publishing, we are world leaders in professional scientific communications. Go to http://www.iop.org
[ | E-mail | Share ]
?
AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert! system.
WEST PALM BEACH, Fla. (AP) ? The hurricane-force thrust from a jet engine pushes Tarinan von Anhalt into the air as she splatters an array of colors into the wind and onto a blank canvas to create the abstract designs she has become known for.
Instead of paintbrushes, she uses $10 million jet engines from a Learjet to hurl blues and purples with a force that creates intense power and heat.
"The timing of the velocity and the heat and the paint and so many other conditions is what creates art," she told The Associated Press on Tuesday from a tarmac in West Palm Beach.
Von Anhalt began creating such one-of-a-kind ? and pricey ? artwork in 2006 after studying the work of her mentor and late husband, Prinz Jurgen von Anhalt of Germany, who is credited with creating this type of artwork about three decades ago.
In a tight black Lara Croft-inspired pant suit, Princess von Anhalt grabs plastic bottles and jars of paint as she slowly makes her way across the tarmac to the blank canvas as planes take off nearby. With a small jet parked about two car-lengths away, she stands close enough to the canvas to touch it.
Von Anhalt then raises her empty hand to motion for the pilot to speed up the engine, and the splattering begins.
Hurled into the air at a ferocious velocity, paint collides with canvas and slowly drips in different directions in Florida's humidity.
The power of the engine and the heat of the creative process, Von Anhalt said, are addictive.
"When I'm in the midst of the creation, I don't think of the force," she said. "I don't think of the danger. I don't think of the heat. I'm caught up in the moment. It's addicting and you don't want to stop."
Flexjet, a private jet services company, partnered with the Jet Art Group to create different artworks to celebrate the 50th anniversary of Learjet.
Von Anhalt has created about three dozen pieces so far, but declined to say how much her paintings go for.
"It's a passion like a hurricane, like a tornado," she said. "And the more that the color gets laid down, the more I can see and predict what the painting is going to be." Other times, she admitted, she is surprised to see which direction the paint goes in the wind. "That's the emotion. It's an addiction. And how do you describe that? It's better than anything else."
The father of one of the young men the New York Post said were sought by the FBI in connection with the Boston Marathon bombings might sue the tabloid for tabbing his son as a suspect.
El Houssein Barhoum, whose teenage son, Salah Barhoum, is pictured on the April 18 cover of the New York Post under the headline ?Bag Men," told the Washington Post he's consulting a lawyer about a possible lawsuit.
Salah Barhoum had attended the marathon with a friend. After their photo landed on the cover of the paper, Barhoum, who lives with his family in Revere, Mass., met with authorities to clear his name.
"It's the worst feeling that I can possibly feel," Barhoum told ABC News the day the Post cover story was published. "I'm only 17."
Barhoum, a track athlete, said he wanted to run the marathon but couldn't, so he decided to watch the April 15 race instead.
The day before the Post cover came out, the photos of Barhoum and his friend were circulated by online message boards in the frenzy to help the FBI identify the bombing suspects. According to ABC News, federal authorities "passed around images of Barhoum, attempting to learn more information about him." But it's unclear whether that was before or after the Post ran with them.
The paper took plenty of heat for putting out an erroneous APB, but stubbornly stood its ground despite the confusion it caused.
"We stand by our story," Post editor Col Allan said in a statement. "The image was emailed to law enforcement agencies yesterday afternoon seeking information about these men, as our story reported. We did not identify them as suspects."
The Post subsequently published a separate online story reporting that Barhoum and his friend had been cleared: "The two men whose photos were being circulated internally among police have been cleared as authorities determined that neither man had any role in the Boston Marathon bombings."
Bur according to Barhoum's father, the damage had already been done. ?We were just scared to go outside,? he said.
It might look like a one-seat sofa capable of traversing almost any terrain on the planet, but this compact electric vehicle is actually designed to be a highly maneuverable and comfortable alternative to a traditional wheelchair. You won't ever see it cruising down sidewalks, but one day they might be crawling all over hospitals.
Apr. 30, 2013 ? Cooperative behaviour is widely observed in nature, but there remains the possibility that so-called 'cheaters' can exploit the system, taking without giving, with uncertain consequences for the social unit as a whole. A new study has found that a yeast colony dominated by non-producers ('cheaters') is more likely to face extinction than one consisting entirely of producers ('co-operators'). The findings, published April 30 in the open access journal PLOS Biology by Alvaro Sanchez and Jeff Gore from the Massachusetts Institute of Technology, are the results of the first laboratory demonstration of a full evolutionary-ecological feedback loop in a social microbial population.
The researchers found that while a cooperative yeast colony that survives by breaking down sucrose into a communal supply of simple sugars can support a surprisingly high ratio of freeloaders -- upwards of 90 per cent -- a sudden shock to its environment is highly likely to result in catastrophe.
"One of the main things we were interested in was the idea that natural selection can have an effect on the ecology of a population, so that as a population is evolving, natural selection affects the ecological properties," said Dr Sanchez.
The researchers studied a cooperative species, Saccharomyces cerevisiae or 'baker's yeast', focusing on two strains: one which had the SUC2 gene that produces the enzyme invertase (the co-operators), and one lacking SUC2 (the cheaters) making it unable to produce this enzyme. Invertase breaks down sucrose in the environment to liberate glucose and fructose that can be used by all yeast cells in the colony.
"We were very surprised by the fact that the total population size for the mixed group (consisting of both co-operators and cheaters) was about the same at equilibrium as the total population size in the absence of cheaters (i.e. purely co-operators). We didn't expect that," Dr Sanchez explained. "If it weren't for the fact that the co-operators and cheaters were labelled with different colours, it would have been very hard to tell whether the population contained any cheaters or not."
This was the case when the environment was benign. But when those stable populations were suddenly exposed to a harsh environment, all of the pure co-operator populations survived, while just one of six mixed populations adapted to the fast deterioration in conditions, the researchers found.
Benjamin Allen, Assistant Professor of Mathematics at Emmanuel College and Martin A. Nowak, director of the Program for Evolutionary Dynamics at Harvard University, co-authored an accompanying Primer in PLOS Biology, "Cooperation and the Fate of Microbial Societies."
"The experiments of Sanchez and Gore beautifully illustrate the central dilemma in the evolution of cooperation. The yeast society depends on cooperation, but if cooperation is plentiful, 'cheaters' can exploit the generosity of others. This leads to cycles of cooperation and exploitation," said Dr Allen.
The researchers found that an eco-evolutionary feedback loop links changes in population size, and their effects, with changes in the frequency of specific genetic types in the population. During the competition for survival between co-operators and cheaters, they showed that if the population starts off with sufficient co-operators then the social properties of the yeast spiral towards a final equilibrium position that comprises a stable mixture of co-operators and cheaters. However, if the initial population density, or the initial proportion of co-operators, is too low, then not enough simple sugars are produced, and the colony dies out.
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The above story is reprinted from materials provided by Public Library of Science.
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Journal Reference:
Sanchez A, Gore J. Feedback between Population and Evolutionary Dynamics Determines the Fate of Social Microbial Populations. PLoS Biol, 2013 DOI: 10.1371/journal.pbio.1001547
Note: If no author is given, the source is cited instead.
Disclaimer: Views expressed in this article do not necessarily reflect those of ScienceDaily or its staff.
After a busy run in April, May is a relatively slow month for MMA. You can spend the extra time and money you're not spending on fights on a Mother's Day gift. After you've taken your mother to brunch, check out these fights:
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Public release date: 2-May-2013
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