Citation: AMD Releases Two New HD4800 Series 40nm Mobile GPU’s (2009, March 3) retrieved 18 August 2019 from https://phys.org/news/2009-03-amd-hd4800-series-40nm-mobile.html 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. Explore further ATI PowerExpress and ATI Switchable Graphics Technology are used to power down the GPU when it’s not in use. Advanced clock gating, which exist in three modes, and GPU activity monitor extend the power saving features by the ability to utilize a separate, built-in graphics processor of much lower power consumption and processing ability. Switching between the integrated graphics processor and ATI Radeon HD can be done without rebooting but is not initiated automatically.The GDDR3 would target mainstream applications, while the GDDR5 would target the high end due to its increase in memory bandwidth from the standard GDDR3 and 64 GB/s. Memory bandwidth is somewhat crippled as compared to the chip’s potential. This is due to a 128 bit bus which is down from 256 in Mobility 4800-series; however faster core clock slightly compensates for this while providing additional power savings.There are several 40nm ATI Mobility Radeon HD win updates for the 4860 and 4830 that include the ASUS N81Vp, N51Tp and W90. MSI’s GT727 will upgrade from 4850 and Toshiba’s Satellite 300 upgrade 4650. AMD will be announcing additional partners at the CeBIT.© 2009 PhysOrg.com Rooftop solar panels get boost from tool that previews a year on grid in minutes (PhysOrg.com) — AMD announced today, two new ATI Mobility Radeon HD4800 series mobile GPU’s. The HD4830 and HD4860 are both built on ATI’s 40nm process technology and both support DDR3, GDDR3 and GDDR5 memory, with the GDDR5’s memory doubled over the GDDR3. GPU’s performance is nearly doubled from 432 Gflops in the 4600 series to 832 Gflops for the 4800 series GPU’s.
Image is an Engadget mock-up of what Sony’s PSP-Go Phone may look like. Credit: Engadget Wistron NeWeb Introduces GW4: Linux Loaded & Android Capable Mobile Device © 2010 PhysOrg.com Explore further The slider phone will have a touchscreen that will be between 3.7 and 4.1 inches with WVGA resolution or better and a landscape slide out game control panel. In place of the joystick the device will have long touch pad for analog controls along with the standard PSP buttons. The device will be running a 1GHz Snapdragon CPU and have a custom skin overlay on Android 3.0.Android market will have a separate section devoted to the PSP Gaming device. Titles currently being mentioned included: God of War, Call of Duty: Modern Warfare, and LittleBigPlanet. The game area will only be available to Sony/PSP-Go phone owners but also may become available to other Android 3.0 devices if they are equipped with the proper control panel.Engadget believes that it’s possible the phone and ecosystem could be introduced as early as October of this year but there has been no confirmation to this. The release of device may be just what Google needs to set the path for future gaming on the Android platform. With the increase number of Android smartphones coming out every month a whole new gaming market may be just what Google needs to stiffen the completion against their competitor, Apple.Via: Engadget Sources have it that Sony Ericsson is hard at work developing a PSP Go-like phone running on Android 3.0 platform. According to Engadget the phone targets gaming fans and resembles somewhere between a Samsung Captivate and the PSP Go. Citation: Sony Ericsson to Introduce PSP/Smartphone Android 3.0 Gaming Platform (2010, August 16) retrieved 18 August 2019 from https://phys.org/news/2010-08-sony-ericsson-pspsmartphone-android-gaming.html 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.
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. More information: A Methylaspartate Cycle in Haloarchaea, Science 21 January 2011: Vol. 331 no. 6015 pp. 334-337. DOI:10.1126/science.1196544 © 2010 PhysOrg.com Researchers find metabolic pathway in malaria parasites; possible drug targets Citation: Microbe processes carbon via new metabolic pathway (2011, January 21) retrieved 18 August 2019 from https://phys.org/news/2011-01-microbe-carbon-metabolic-pathway.html Every organism known metabolizes carbon compounds to produce energy and the basic cellular building blocks. Humans and other vertebrates do this via the Krebs cycle, in which acetyl coenzyme A (acetyl-CoA) plays an important role. Vertebrates are unable to convert acetyl-CoA into malate, a precursor of other molecules such as sugars, but many plants and microorganisms can, via either the glyoxylate cycle or the ethylmalonyl-CoA pathway, which was discovered in 2007 by a team of scientists led by Dr. Ivan A. Berg of the University of Freiburg in Germany. The new microbe, a single-celled microorganism of the domain Archaea, was discovered by the same research team to use a third pathway that was previously unknown.The researchers realized the microbe could not use the glyoxylate cycle because an essential enzyme in the cycle, isocitrate lyase, was missing. It could not use the ethylmalonyl-CoA pathway either because it lacks some of the genes necessary to synthesize the enzymes used in the cycle.Over a period of two years the researchers analyzed the enzymes H. marismortui used when it was grown on a medium containing acetate and determined it was using the methylaspartate cycle (named after an intermediate in the cycle to convert acetyl-CoA to malate. This cycle is longer and more complex than the other two pathways but it does have advantages for a microbe living in such salty conditions, since one of the intermediates in the cycle limits osmosis, which would draw water out of the cell in attempt to balance the salinity across the cell membrane.Dr. Berg said the discovery of the third metabolic pathway means there could be others, and added that “the diversity of life is bigger than we know now.”The discovery also sheds some light on evolutionary processes since the enzymes in the cycle are similar to those found in ancient bacteria, but are not present in other Archaea, which suggests H. marismortui’s ancestors obtained the genes by lateral gene transfer rather than evolving through a lengthy series of random mutations. Berg said there were few such examples where it is so clear how the metabolic pathway evolved, which he said makes the pathway “a kind of a wonder.” (PhysOrg.com) — A Dead Sea microbe has been found to use a previously unknown metabolic pathway to metabolize fats as a source of carbon to synthesize carbohydrates. This suggests there may be other undiscovered pathways and more ways to live in extreme habitats than previously believed. Explore further
Sixth-grader proves invasive species of ocean fish can thrive in low saline water Antennata Lionfish, picture taken in Zoo Schönbrunn, Vienna, Austria. Credit: Christian Mehlführer/Wikipedia Adding to the story was reporting by several news outlets that described Arrington’s research as providing evidence of the invasive lionfish living in Florida estuaries. Both Arrington and her father have denied she ever made such a claim. Instead, they say, her research showed that lionfish could live farther upstream in an estuary than others had known about. Complicating things is news that prior to the science fair project, Arrington, her father and Jud were all friends. The father, Albrey, was even listed as a writer on a paper that listed Jud as the lead. Albrey was also, according to Jud, the best friend of Jud’s supervisor when he was still in grad school.Jud’s complaint appears to center around the attention Arrington has received by the press—the accolades heaped on Arrington, he claims, should have been shared with him and his name should have appeared alongside hers in news reports. It was his original research after all, he contends, that led to the research done by Arrington. Jud also insinuates that the omission of his name in news stories was intentional, a move by the Arrington’s to focus the attention on Lauren. The Arrington’s have denied any such attempts and insist that mentions of Jud by either of them to the press were ignored in favor of a more popular storyline.Some in the science community have sided with Jud, apologizing for publishing stories about Arrington’s work without mention of Jud’s previous work—others have looked to discredit Jud, by suggesting that Arrington should have been credited on some of his earlier work as she helped him with some projects when he was still in grad school.At this point it seems clear that the story became perhaps, a little bigger than it should have due to the age of Ms. Arrington and the cuteness of her school science project, leading to a lapse in editorial judgment by some members of the press, unfounded claims in some instances and hurt feelings by one marine biologist. © 2014 Phys.org Zack Jud, a PhD graduate of Florida International University and current marine biologist, has caused a small ruckus in the marine biology community by posting comments on his Facebook Page, suggesting that the work done by thirteen year old Lauren Arrington was actually based on work he’d already done. Arrington, a sixth grade student in Jupiter Florida, and daughter of a professional biologist gained Internet notoriety this past week after news of experiments she conducted on lionfish went viral. Her experiments, which were used as a project in a science fair, demonstrated that lionfish can live in less saline water than had been previously thought. Jud contends that Arrington’s experiments were based on his work, and that he should be getting the credit for the results. Citation: Marine biologist claims lionfish study by sixth grader was lifted from his research (2014, July 24) retrieved 18 August 2019 from https://phys.org/news/2014-07-marine-biologist-lionfish-sixth-grader.html Explore further 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.
Quantum photonic interconnect and entanglement distribution between two integrated Si photonic chips. Credit: arXiv:1508.03214 [quant-ph] Explore further For modern electronic devices to work, there must be some channels for the different parts to use to convey information between them—such channels are usually either wire carrying electricity or fiber carrying photons and are called interconnects. But as researchers shrink down the parts, the interconnects more and more represent a bottleneck. Worse, as scientists conduct research into creating a truly quantum computer, the problem of creating interconnects for them has become a serious issue. Now, in this new effort, the research team is claiming to have found a solution—one where a separate entanglement stage is used to preserve the original entanglement needed as part of normal operations—demonstrating a way to connect two photonic chips.To allow for interconnection, the researchers ran two sources of photons along one of the chips, on channels that overlapped—when the photons met in the overlap area, they became entangled and that entanglement was then carried along different paths in the chip. They next ran the photons through a device that converted that path entanglement into a whole new type of entanglement, one that involved polarization, which also caused the creation of new entangled photons. Those newly entangled polarized photons were then passed into an optical fiber that ran between the two chips. The whole process was then reversed in the second chip, where the polarized photons were converted back to path entangled photons, which then behaved exactly like the photons in the first chip. The team conducted multiple different types of tests to prove that entanglement was preserved throughout the interconnection process.The team acknowledges that the process is still too inefficient to be implemented into real devices, but believe further refinement will lead to a usable solution. But, they have shown that it is possible to interconnect quantum devices, which should come as a relief to those working on building a quantum computer. © 2015 Phys.org Journal information: arXiv New method of quantum entanglement vastly increases how much information can be carried in a photon 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. More information: Quantum Photonic Interconnect, arXiv:1508.03214 [quant-ph] arxiv.org/abs/1508.03214AbstractIntegrated photonics has enabled much progress towards quantum technologies. However, many applications, e.g. quantum communication, sensing, and distributed and cloud quantum computing, require coherent photonic interconnection between separate sub-systems, with high-fidelity distribution and manipulation of entanglement between multiple devices being one of the most stringent requirements of the interconnected system. Coherently interconnecting separate chips is challenging due to the fragility of these quantum states and the demanding challenges of transmitting photons in at least two media within a single coherent system. Here, we report a quantum photonic interconnect demonstrating high-fidelity entanglement distribution and manipulation between two separate chips, implemented using state-of-the-art silicon photonics. Entangled states are generated and manipulated on-chip, and distributed between the chips by interconverting between path-encoding and polarisation-encoding. We use integrated state analysers to confirm a Bell-type violation of S=2.638+-0.039 between two chips. With improvements in loss, this quantum interconnect will provide new levels of flexible systems and architectures for quantum technologies.via Arxiv Blog (Phys.org)—An international team of researchers has found a way to interconnect two quantum devices, allowing photons to move between the two, all while preserving entanglement. In their paper they have uploaded to the preprint server arXiv, the team describes their process and their hopes for tweaking it to make it more efficient. Citation: A way has been found to interconnect quantum devices including preserving entanglement (2015, August 21) retrieved 18 August 2019 from https://phys.org/news/2015-08-interconnect-quantum-devices-entanglement.html
Kolkata: The accident of the Ferrari on National Highway 6 in Howrah on Sunday that claimed a life has brought to the forefront the need of a separate wing of the police exclusively to look after traffic movement on the highways. It may be mentioned that the car was at a speed of above 150 km per hour and as a result, it overturned at least seven to eight times before hitting a roadside metal railing. Though the investigating officers are yet to ascertain the exact reason behind the accident, experts on road transport feel that it is necessary to form a separate wing of the police to ensure that traffic norms are not violated on highways. Also Read – Heavy rain hits traffic, flightsAccording to an officer of the state police who is deeply involved in the management of traffic, policemen are deployed at intersections in the city and they immediately inform their counterparts in the next intersection if they find any vehicle passing at high speed. The car or the two-wheeler is intercepted immediately at the next intersection which prevents road accidents. Similarly, in a bid to ensure that vehicles ply on highways without crossing the maximum speed limit as set in the norms, there is a need to set up a team comprising policemen to look after traffic management only on highways. “The officers also need to be provided with training to know all the aspects of traffic management so that they can take immediate and necessary steps to check accidents on highways,” the officer said adding that they will also ensure that no illegal parking takes place along the highways which is another reason behind accidents on highways. Also Read – Speeding Jaguar crashes into Merc, 2 B’deshi bystanders killedIt may be recalled that Trinamool Congress MP Abhishek Banerjee also suffered an accident on National Highway 2 and illegal parking was the reason behind it. A section of officers of the specialised wing to look after the traffic management on highways will be continuously patrolling to ensure no illegal parking takes places. It may be mentioned that at present local police stations look after the same on highways that fall under their jurisdiction. “But a dedicated set of team is necessary to be in place for round-the-clock surveillance,” he said.
Kolkata: Following the direction of Chief Minister Mamata Banerjee, the state Transport department is going to start a state-wide drive to check the fitness of public transport vehicles.According to a senior official of the state Transport department, checking of goods vehicles is carried out round-the-year.”Now, we are going to initiate a process to carry out periodical fitness checking of public transport vehicles,” the official said, adding that initially emphasis will be given on checking fitness of buses and mini-buses that ply on different routes. It has been stated that there are two reasons behind starting fitness check of public transport vehicles. First of all, it will help in reducing the number of road accidents and will also ensure that commuters get better service, particularly as the bus fares have recently gone up. It may be mentioned that the Chief Minister has called for necessary steps to ensure periodical fitness checking of vehicles to avoid accidents. Also Read – Rain batters Kolkata, cripples normal lifeSince stress will be initially given on checking the fitness of buses, the official said that they will be checking whether a passenger is facing any problem while travelling in the vehicles. Citing some examples, the official added that they will be checking the condition of tyres being used in the public transport vehicles.It may be mentioned that use of good quality tyres in buses is mandatory to check accidents. According to experts, the chances of skidding goes up when sudden brake is applied if the condition of tyre is poor or if the vehicle is fitted with rethreaded tyres. Mainly in monsoon, many accidents take place due to the use of rethreaded tyres, as vehicles do not stop despite applying brakes. Also Read – Speeding Jaguar crashes into Mercedes car in Kolkata, 2 pedestrians killedBesides checking the quality of tyres, the officials will also check the overall condition of a bus to find out whether water drips from its ceiling and causes inconvenience to passengers. They will also check the condition of seats.”The checking will be carried out at different points and it will be done following the pick and choose method. Necessary steps will be taken if they find that the vehicles are not maintained properly,” the official said, adding that their endeavour is to ensure better amenities for passengers.The bus owners, in whose vehicles any fault is found, will be directed to repair the same, before plying them again.This comes at the time when the state government has taken up the state-wide Safe Drive Save Life campaign to bring down the rate of accidents.
Our film Shankhachil is a story of a family who lost their nation and motherland due to India and Bangladesh partition. The word Shankhachil means boundless, who has no boundaries, no limits. Without the awareness of the past, one cannot move ahead in future. Present is basically a moment in past and future. Past is witness to us. If we want to work on the present, we need to have ideology about our past.Our political scenario; our condition during the time of partition is definitely what students are probing about. But what I see, in future it will be a seamless border. Our colloquial history is same, the culture is same, and the language we speak is same, we would definitely witness the two countries as one, may be today or some other day. Shankhachil is an initiative. It is a film, a story, a history, and some suggestions for the youths. The youth will bring us together and we’ll find no division or boundaries. We have made the film in perspective of a river which has divided the two Bengals, but not the humans who have divided it.This film belongs very much to the present generation and there is a deep emotional attachment built in the film, in the context of partition.
Kolkata: Narcotics Control Bureau (NCB) Eastern Zone has nabbed a person from English Bazar in Malda and seized 850 grams of heroin from his possession. Sources informed that the drug was about to be delivered by someone there, which would have been sent to Bangladesh later.According to NCB sleuths, they had recently got a tip-off that a racket is actively dealing in several drugs in North Dinajpur. Based on the tip-off, sleuths started gathering intelligence from the Domkal area of North Dinajpur. During the cover survey, NCB came to know that the racket is operating through South Dinajpur and Malda as well. Racketeers use the said corridor to deliver the drugs to Bangladesh. Also Read – Speeding Jaguar crashes into Mercedes car in Kolkata, 2 pedestrians killedRecently, sleuths came to know that one Suman Das was the leader of the racket in Domkal. Based on the information, sleuths were keeping a vigil on Das. On Tuesday, when he went to English Bazar with 850 grams of heroin, sleuths followed him there. After waiting for some time, no one came to receive the heroin worth Rs 2 lakh approximately. When Das was about to go away, NCB sleuths surrounded him. During search, a packet full of heroin was seized from him. According to NCB, the source of the drug was Dalkhola, Uttar Dinajpur and the destination was Kaliachak primarily. From there, it would have been smuggled to Bangladesh. Sleuths are also searching his house and other places for more clues.
After a day of pondering over archived photographs, maps, engravings and portraits depicting the establishment of diplomatic relations between India and Russia, contemporary art by various artists at the exhibition – ‘Carrying Roots around’ and a cinematic journey through Italian cities; get yourself ready as the second day i.e. October 8, of the ‘Festival of the arts’ at India International Centre (IIC) brings with it a day full of food, music and cinema. Also Read – Add new books to your shelfAt 11 am, one can witness the brilliance of the Mysore Brothers – Dr Mysore Manjunath and Mysore Nagaraj. The sons and disciples of renowned violinist Prof. Mahadevappa were child prodigies who matured quickly to emerge as one of the top ranking violinists today. Their exceptional musical talents were first discovered at the age of 8 years when they stormed into the music world sweeping music lovers and critics off their feet with their extraordinary musical acumen and technical virtuosity. Also Read – Over 2 hours screen time daily will make your kids impulsiveAfter a harmonious duet, go and enjoy the flavours of Bihar at 1 pm, as Pooja Sahu of Pot Belly restaurant presents some exquisite yet simple dishes from the state which houses myriad monasteries. Had a bite of Bihar? Now, travel to the streets of Italy. At precisely 2 pm, watch award-winning Quiet Bliss by Edoardo Winspeare, followed by Red Dessert by Michelangelo Antonioni at 4:15 pm.Delve a bit into history and know how Mohan turned to Mahatma at 6:30 pm. Directed by Dr M. Sayeed Alam and presented by Pierrot’s Troupe, this play marks the centenary of the Champaran Satyagraha – the defining symbol of Mahatma Gandhi’s introduction to India and the country’s first major revolt in the struggle for independence. The play opens with a 55 year – old Gandhi making notes of the Champaran Satyagraha for his autobiography, “My Experiments with Truth”. Moving from the epoch making events of the movement, the arrival of a 47 year-old M.K. Gandhi sporting Kathiawadi attire in Patna on April 10, 1917; and his onward journey to Champaran and its successful culmination. The play portrays the Champaran Satyagraha not just as a political movement alone but also focuses on the larger and far reaching consequences of the movement in terms of social, education and economic reforms.Wrap up your Sunday with a spicy dinner at 8 pm straight from the Tandoor by Chef Vijay Thukral and the staff of the IIC kitchen, followed by an evening show of Miracle in Milan, a 1950s film by Vittorio de Sica. The film revolves around Toto (Francesco Golisano), an orphan boy with a good, innocent approach to life, who joins a colony of beggars in a shack village on the outskirts of Milan.