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first_img(PhysOrg.com) — As Olympic records are being broken left and right by Michael Phelps, questions have been raised do we have a performance enhancing water issue. Some attribute the gold hanging around Olympiad Phelps is the result of a Superman fabric developed by Speedo. In fact, aside from a truly phenomenal performances by the swimmers, it could be the water. ProMinent, the brainchild of Professor h.c. Viktor Dulger in Heidelberg developed the first electronic solenoid driven dosing pump known as the Ozone Technology system for sanitizing pools in 1971. The system does not rely on chlorine which is viewed as harmful to swimmer’s lungs, eyes and may cause skin rashes. ProMinent is a leader world-wide with operations in China, Germany, Hungary and South America. The war on Southern California smog is slipping. Fixing it is a $14 billion problem Citation: It’s The Water: Beijing Olympic Swimmer Provided State-of-Art ProMinent Ozone Technology (2008, August 12) retrieved 18 August 2019 from https://phys.org/news/2008-08-beijing-olympic-swimmer-state-of-art-prominent.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. Image: ProMinent According to ProMinent, the Ozone technology built and utilized by the Water Cube is the most powerful oxidation agent and disinfectant that exhibits an extremely broad and effective biocide spectrum. It is an environmentally and human-friendly technology that generates ozone from pure oxygen or from oxygen in the ambient air and meter it into the water. Even in atmospheres with high humidity the facility will work effectively. ProMaqua products will be used for water treatment along with seven Bono Zon series Ozone generating systems. The challenge met by ProMinent was to ensure pure water quality as required by standards set by the Olympic Committee for the six training, diving, and competition pools. The mission was accomplished with a programmable logic controller, display panel for monitoring with an operator control panel. A total of 18 Sigma and Vario diaphragm metering pumps in combination with four Dulcomarin controllers and nine D1c controllers ensure exact measurement of disinfectants, maintain pH-balance and flocculates. All water measurements are monitored by 37 sensors. According to a study conducted by Dr. Jose Jacobs of the University of Utrecht in the Netherlands chlorine interacts with other substances such as urine and sweat to produce an irritation in the respiratory tract. The chloromines comes in various types all with some to marked impact on the swimmer. A study of nearly 624 swimming teachers and employees connected to swimming pools suffered increases in sinusitis, throat, respiratory illnesses. The research report confirms findings by physicians in the USA and elsewhere of increased vulnerability to asthma, allergies and other respiratory illnesses. In addition, the Water Cube has an advanced water filtration system which takes into account Beijing’s need to conserve limited water resources. The water filtration system will run the backwash water through a two-stage filtration system before returning it back to the pool. Engineers installed a unique breeze system that runs gently across the water to remove any trace of disinfectant aromas. The Ozone technology is prevalent in numerous European countries and now in Beijing China. There are alternatives to chlorine systems, but none that are uniformly agreed by scientists, medical specialists as gentle on humans and the environment. The United States appears to show interest in this technology and some Ozone technology sites are currently in use. Taking nothing away from the exceptional skill, years of training and abilities of Michael Phelps et.al. It doesn’t hurt to have some healthy clean water surrounded by an astounding Water Cube of LED lit bubbles. last_img read more


first_img 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. “We are looking to see to which extent this principle holds,” Bouyer tells PhysOrg.com. “Does the principle break down at a certain level? And if it does, what is that level? If it breaks down, that opens up a whole range of fundamental questions, such as the existence of new interactions as predicted by many current quantum theories of gravity. We have created a test that we hope will open the field to see whether the weak equivalence principle holds at the quantum level.”In order to test the weak equivalence principle, Bouyer and his peers Varoquaux, Nyman, Geiger and Cheinet at the Laboratoire Charles Fabry, and Landragin at SYRTE, suggest a technique using a parabolic flight plane outfitted with an atom interferometer. The device would be used to determine whether the acceleration is the same for two different atoms in free fall. Their proposed method is described in New Journal of Physics: “How to estimate the differential acceleration in a two-species atom interferometer to test the equivalence principle.”“If you want to test the acceleration of atoms on the ground, you have very little time before the atoms hit the floor” Bouyer explains. “In parabolic flights, though, you have up to 20 seconds of free fall to see whether there is a difference in acceleration. When dealing with atoms, this is a rather long time indeed.” The atoms would be captured, laser cooled using well known techniques and then dropped in the “free falling” plane. It would then be possible to precisely measure the acceleration of the two different atoms using atom interferometry. “We plan to use rubidium and potassium,” he says, “since they are very different atoms with a difference in mass that is significant. This way, if they have no difference in acceleration, the equivalence principle is demonstrated. If there is a difference in acceleration, we know that it breaks down at the precision level of our measurement.”One of the problems, though, is that the parabolic flight plane is very noisy. Bouyer and a team from various scientific institutes in France addressed this problem last year. They tested the operation of a specially designed atom interferometer in a free fall plane (results can be found in The European Physical Journal D), finding that the sensitivity of measurement was enhanced, allowing acceleration in rubidium to be measured. To cancel out the noise, Bouyer and his colleagues worked out a way to extract the acceleration using Bayesian statistical estimation. “Our dedicated statistical analogy allows us to extract the EP signal out of the noise of the environment,” he explains.For now, the proposed experiment remains just that: proposed. But Bouyer is hopeful. “We are very close to getting two atoms at the same place, and using our interferometer in a state of free fall should enable us to take measurements that may help us demonstrate the viability of the equivalence principle at the quantum level.”More information:• Varoquaux, et al, “How to estimate the differential acceleration in a two-species atom interferometer to test the equivalence principle,” New Journal of Physics (2009). Available online: https://sp2.img.hsyaolu.com.cn/wp-shlf1314/2020/IMG9852.jpg” alt=”center_img” /> Citation: Does weak equivalence break down at the quantum level? (2009, December 8) retrieved 18 August 2019 from https://phys.org/news/2009-12-weak-equivalence-quantum.html (PhysOrg.com) — One of the givens in physics is the weak equivalence principle. This principle has been considered solid since Einstein proposed that it is not possible to detect the difference between uniform acceleration and a uniform static gravitational field. The uniqueness of freefall allows uniform acceleration, even between masses that are different, according to Einstein’s postulate in the theory of General Relativity. The weak equivalence principle is well established amongst the science community, but it has yet to be demonstrated completely. This is where Phillippe Bouyer at Laboratoire Charles Fabry de l’Institut d’Optique, Campus Polytechnique in Palaiseau, France, and his colleagues are attempting to go.last_img read more


first_img Explore further Copyright 2010 PhysOrg.com. All rights reserved. This material may not be published, broadcast, rewritten or redistributed in whole or part without the express written permission of PhysOrg.com. (PhysOrg.com) — One of the fields of great interest to scientists and researchers is that of using the quantum world to enhance various aspects of our lives. Advances in quantum cryptography make headlines, and scientists continue to look for ways to bring quantum information processing into the mainstream. Anthony Bennett, a scientist at Toshiba Research Europe Limited in Cambridge, in the U.K., works with quantum dots in an effort to look for ways to enhance their applications. Citation: Encouraging quantum dots to emit photons (2010, August 5) retrieved 18 August 2019 from https://phys.org/news/2010-08-quantum-dots-emit-photons.html More information: Anthony J. Bennett, Raj B. Patel, Joanna Skiba-Szymanska, Christine A. Nicoll, Ian Farrer, David A. Ritchie, and Andrew J. Shields, “Giant Stark effect in the emission of single semiconductor quantum dots,” Applied Physics Letters (July 2010). Available online: link.aip.org/link/APPLAB/v97/i3/p031104/s1center_img Engineers at USC and UT-Austin boost the sensitivity of night vision goggles by using quantum dots “I work with single quantum dots, manipulating them and doing interesting experiments that will hopefully be useful in the future for quantum information processing,” Bennett tells PhysOrg.com. “What we’ve done recently is to show a giant stark effect in semiconductor quantum dots, which will lead to better yields in certain devices and enable entirely new applications.”Bennett worked with a team from Toshiba Research, as well as with scientists at the Cavendish Laboratory at Cambridge University. The results of their recent collaboration are published in Applied Physics Letters: “Giant Stark effect in the emission of single semiconductor quantum dots.”“When working with quantum dots,” Bennett explains, “there are many circumstances when you want to be able to get dots that are the same. However, quantum dots form naturally with different sizes, shapes and compositions. The idea is to shift them so that they all emit the same energy.”Prior to this work, shifts to quantum dots of this size had not been observed before. “Normally the shift is confined to a very small range,” Bennett says. “We showed that you could shift the transitions in the quantum dots a surprisingly long way with our technique.”“Previously, people have looked at putting quantum dots in diodes and then changing the voltage. We changed the design so that a fixed electric field is applied across the quantum dot vertically, which leads to a shift an order of magnitude larger than seen before.”Normally, such experiment uses dots surrounded with either gallium arsenide or aluminum gallium arsenide. Bennett and his colleagues combined these to get the best of both worlds. “With gallium arsenide, the charges confined in the quantum dot as strongly but the quality of the emission is better. So we grew the dot in gallium arsenide, but surrounded that by aluminum gallium arsenide on each side to confine the electric shift.”After showing the possibility of this large shift to encourage the quantum dots to emit the same energy, the next step is to get two quantum dots with exactly the same energy. “In order to get quantum information processing applications, you need quantum dots with at least two states the same. As a follow up to the work here, we did that.” (More information can be found in Nature Photonics, “Two-photon interference of the emission from electrically tunable remote quantum dots.”)“Quantum mechanically, both of these experiments represent a significant breakthrough. That we can make quantum dots with the same energy emit identical photons is a great step forward in the field of quantum information processing.” 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.last_img read more


first_img Citation: Typhoon-like data wiper is latest computer virus headache (2012, August 19) retrieved 18 August 2019 from https://phys.org/news/2012-08-typhoon-like-wiper-latest-virus-headache.html Source: Kaspersky Lab © 2012 Phys.Org Global wave of Flame cyber attacks called staggering Explore further Guesses that it is going after the energy sector are based on a recent incident where the network for the national oil company in Saudi Arabia was taken offline following a malware intrusion. In a Saudi Aramco statement acknowledging the attack, but not naming any specific virus, the explanation was disruptions were “suspected to be the result of a virus that had infected personal workstations without affecting the primary components of the network.” It affirmed the continued integrity of its networks.Security experts set about trying to explore details of the virus and issued their statements. According to Symantec, “W32.Disttrack is a new threat that is being used in specific targeted attacks against at least one organization in the energy sector. It is a destructive malware that corrupts files on a compromised computer and overwrites the MBR (Master Boot Record) in an effort to render a computer unusable.”Kaspersky Lab noted that this new virus has a file named Wiper. “The “wiper” reference immediately reminds us of the Iranian computer-wiping incidents from April 2012 that led to the discovery of Flame,” said a Kaspersky source.That led them to ask if this was another Wiper incident similar to the attack in Iran. They answered their own question, No.“Based on researching several systems attacked by the original Wiper, is that it is not. The original “Wiper” was using certain service names (“RAHD…”) together with specific filenames for its drivers (“%temp%~dxxx.tmp”) which do not appear to be present in this malware. Additionally, the original Wiper was using a certain pattern to wipe disks which again is not used by this malware.” Kaspersky Lab called Shamoon “the work of script kiddies.”Nonetheless, the attack is considered a grown-up headache in that it makes computers unusable. The person’s PC is unbootable. The machine’s data is wiped. A list of the wiped files is passed to the attacker’s center, in turn replacing the files with JPEG images. This move successfully thwarts rescue attempts to get the deleted files back.What puzzled security sleuths examining Shamoon is that its motive, unlike other worms, was not to steal information, but just to wipe it off. Seculert, security specialists, said the code had unusual characteristics compared with that seen in other attacks.”The interesting part of this malware is that instead of staying under the radar and collect information, the malware was designed to overwrite and wipe the files,” the company said.While the malware does not try to steal sensitive information, it does appear to be concerned with names of the files that it deleted and how many files and the IP address of the infected computers.One Symantec researcher said that, since the malware was an executable, it might arrive at the victim’s workstation as an e-mail attachment.Generally, security firms examining Shamoon agreed that the malware was not widespread and was launched in very focused attacks.By Friday, reports coming in from the UK said that, in a post on the website Pastebin.com, the Arab Youth Group claimed responsibility for the attack. The group called the attack a message to Saudi officials. (Phys.org) — A new computer virus is leaving security experts asking what could be the motive and where is the source—but one suspicion is that it is targeting infrastructure in the energy industry. The culprit, called Shamoon, wipes out files and then makes the affected computer unusable. More information: www.securelist.com/en/blog?pri … 1&weblogid=208193786 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.last_img read more


first_img Explore further Rising seas swamp Marshall Islands More information: Ma. Laurice Jamero et al. Small-island communities in the Philippines prefer local measures to relocation in response to sea-level rise, Nature Climate Change (2017). DOI: 10.1038/nclimate3344AbstractMost adaptation studies suggest that sea-level rise will lead to relocation as flooding worsens. Here we identified and evaluated potential adaptation strategies for adapting to sea-level rise, based on the experiences of four low-lying island communities in central Philippines that have experienced flooding during normal high tides since a 2013 earthquake that induced land subsidence. Coastal surveys, interviews and household questionnaires showed that island residents generally prefer in situ adaptation strategies rather than relocation to the mainland. These results are unexpected, particularly because a relocation programme has been developed by authorities on the mainland. Direct measurements during a flooding event indicate stilted housing as the most effective type of adaptation strategy. Many households have also raised their floors using coral stones, although this might inadvertently increase their vulnerability to typhoons and storm surges in the long-term. © 2017 Phys.org Many scientists around the world have been warning of the expected dire consequences of rising ocean levels due to global warming. Millions of people, they say, will have to migrate when their island homes become submerged. This mass migration, they note, will likely cause enormous problems unless governments plan ahead. But some of those estimates might be premature, the researchers conclude. Many islanders may instead opt to stay, choosing to adapt rather than move from their homes.To learn more about possible migration caused by rising ocean levels, the researchers ventured to the islands of Tubigon, Bohol, in the Philippines. An earthquake back in 2013 caused four of the islands in the community to sink to the point that they are now very nearly covered with water every high tide. The Philippine government offered the islanders housing on the mainland, but many chose to stay regardless of the hardship. To find out how and why this was possible, the researchers conducted door-to-door surveys, led focus groups and interviewed community leaders. They report that the main reasons the islanders gave for choosing to stay was fear of losing their livelihood and questions about safety in a new place. Many of those who chose to stay built up their homes using coral, or resorted to congregating in safe areas during high tides. Also, groups organized rainwater harvesting events to preserve potable water.The attitudes and actions of the island people in the Philippines suggests, the researchers claim, that many of those considered future refugees due to climate change may not be after all. Citation: Study results suggest migration estimates due to global warming may be wrong (2017, July 25) retrieved 18 August 2019 from https://phys.org/news/2017-07-results-migration-due-global-wrong.htmlcenter_img Journal information: Nature Climate Change (Phys.org)—A team of researchers from Japan, the Philippines and Vietnam has found real-world evidence of people refusing to leave their island homes even after an earthquake has caused severe flooding to occur every high tide. In their paper published in the journal Nature Climate Change, the group describes their study of the people on the islands of Tubigon, Bohol, Philippines, and what their findings suggest about other island people responding to rising ocean levels due to global warming. Dominic Kniveton with the University of Sussex offers a News & Views piece on the work done by the team in the same journal issue. A small Fijian island. Credit: Remember/Wikipedia 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.last_img read more


first_imgKolkata: Within two months after Bengal was declared the best quality milk producing state in the country, the Mamata Banerjee government has taken a move to set up a milk producing unit in South 24-Parganas.It may be recalled that the Centre’s National Dairy Development Board (NDDB) awarded Sundarini Naturals, which is a brand of the Sunderban Cooperative Milk and Livestock Producers’ Union Limited, for its superior quality dairy products. It was awarded at a function organised on World Milk Day on June 1. Also Read – Rain batters Kolkata, cripples normal lifeChief Minister Mamata Banerjee had given the name “Sundarini” in 2015 and the model of operating the project has come up as unique because it has helped around 3,000 women to be self-dependent with their share of profit being directly deposited to their bank accounts after selling the produce.Now, with the success of the brand, initiatives have been taken to set up the “Sundarini” milk producing unit which is going to be the second of its kind after Haringhata dairy plant. Also Read – Speeding Jaguar crashes into Mercedes car in Kolkata, 2 pedestrians killedIt will come up somewhere in South 24-Parganas district. Sources said the work to prepare a Detailed Project Report (DPR) has been initiated. The work to identify the place has also started. It is learnt that two locations including one at Mathurapur in South 24-Parganas have been identified. But the final decision on the location of the plant is yet to be taken up.According to the sources in the state secretariat, the plant will come up at a cost of around Rs 30 crore. If everything goes as planned, then there will be production of 20,000 litre of milk every day and the quantity will be increased to 50,000 litre daily in phases. Besides packaged milk, the products under the brand of Sunadarini Naturals include ghee, honey, rice, sona moong dal, eggs and paneer.It may be mentioned that after the success of becoming the best in producing dairy products in the country, steps were also taken for diversification of products by introducing sweets like Kaju Barfi, Rosogolla andGulab Jamun.With the setting up of the unit in South 24-Parganas, the total milk production in the state will also go up. At the same time, it will also be a means of livelihood for many. The dream project of the Chief Minister will reach a new height.last_img read more


first_imgKolkata: The state government on Sunday observed Sanskriti Dibas to celebrate the occasion of rakhi.Chief Minister Mamata Banerjee tweeted: “Heartiest greetings to all my brothers and sisters on the occasion of Rakhi Bandhan. Inspired by the ideals of Rabindranath Tagore, we observe this day as ‘Sanskriti Dibas’ in Bangla.”The state Sports and Youth Affairs department organised a programe at Rashbehari intersection, under the leadership of local councillor Mala Roy. Roy tied rakhi on the wrist of Chandrima Bhattacharya, minister of state for Health, to inaugurate the programme. The message of harmony was spread through the event. Also Read – Rain batters Kolkata, cripples normal lifeBhattacharya said Trinamool Congress does not observe Sanskriti Dibas, keeping its eyes on elections. The festival has been celebrated since Trinamool came into being and through it, the party intensifies its ties with the people.”Tagore had given the message of harmony through rakhi in 1905 and keeping it in mind, Trinamool observes the day to spread the same message. BJP and CPI(M) are forcibly observing the occasion. However, the response of people is lukewarm,” Roy said, adding: “CPI(M) did not observe the festival when the party was in power for 34 years in Bengal. Now, they are doing it after seeing Trinamool.” Also Read – Speeding Jaguar crashes into Mercedes car in Kolkata, 2 pedestrians killedSobhandeb Chattopadhyay, state Power minister, took part in a rakhi celebration event in New Alipore and gave the message of harmony and peace.Medical Bank observed the day as school children tied rakhis on the wrists of 5,000 people, to spread the message of awareness against dengue. The programme started from Sobhabazar in the morning. Later, the volunteers of Medical Bank, along with the school children, tied rakhis on the wrists of people at important crossings like Bhowanipore, Tollygunge and Bansdroni. School children also took part in processions to spread the message of harmony and peace. Partha Chatterjee, Trinamool Congress secretary general, said: “It is Bengal’s culture to uphold the message of peace and harmony. We do not divide society on the basis of religion, caste or creed, like some other parties. People from time immemorial have appreciated Bengal’s message of peace and harmony.”Taking a dig at BJP, he added: “Now, there are rakhis on the hands of those who take out rallies with weapons. Do they even understand the meaning of rakhi?”last_img read more


first_imgKolkata: West Bengal Assembly Deputy Speaker H A Safwi passed away at a city hospital Wednesday morning after a prolonged battle with age-related ailments, family sources said. He was 73. A former IPS officer, Safwi was elected from Uluberia (East) Assembly seat on Trinamool Congress (TMC) ticket twice, in 2011 and 2016. He held the folios of inland water transport and correctional administration under the TMC regime. Safwi was appointed as the deputy speaker of the House on June 23, 2016. Also Read – Rain batters Kolkata, cripples normal life Condoling the deputy speaker’s death, West Bengal Chief Minister Mamata Banerjee said his death was a great loss for the state. “I am deeply saddened to know that Haider Aziz Safwi, Deputy Speaker of West Bengal Legislative Assembly is no more. He was a very senior and respected person associated with us over a long time. His passing away indeed is a great loss,” the CM tweeted. “I convey my deep condolence to members of his family, friends, followers and well-wishers. These moments of sorrow are really very hard for us to digest but there is nothing that we can do but accept,” she added.last_img read more


first_imgSVF, eastern India’s largest movie production house, launched the trailer of their upcoming movie Amazon Obhijaan – the most expensive film ever produced in Bengali language. Launching the trailer in multiple languages, namely – Bengali, Hindi, Oriya, Assamese, Tamil and Telugu, SVF has achieved yet another industry first with Amazon Obhijaan set to become the only Bengali movie to be released in six languages.After unveiling the biggest movie poster for a Bengali film and becoming the first production house to make the story board public before the movie release, SVF has left no stone unturned to promote its mega production Amazon Obhijaan, releasing on December 22. Also Read – Add new books to your shelfMahendra Soni, Co-Founder and Director – SVF, said, “This is probably the first time in Indian film history that any movie trailer is being released simultaneously in six languages, and this is another step in our efforts to take Bengali cinema to newer heights, and reach a wider audience.” The two minute trailer showcases the eternal saga of an explorer’s quest for adventure. Two years after Marco Florian, an Italian adventurer fails in his mission, his daughter Anna approaches the Bengali explorer Shankar Choudhury, requesting him to join for an expedition. Shankar readily accepts Anna’s request and from there on, an enthralling yet long and arduous journey to the heart of Amazon, to discover the hidden city of gold, El Dorado begins.last_img read more

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