First ever hybrid solarcoal power plant operating

first_img The project was developed by Xcel Energy in conjunction with Abengoa Solar, which developed the solar parabolic trough technology that concentrates solar energy to produce heat. The demonstration project is expected to cut the use of coal at the power plant by around two or three percent, and could be scaled up to cut it by 10 percent.The system works through a series of parabolic trough solar collectors made of glass mirrors. On sunny days the mirrors concentrate the solar radiation onto a line of receiver tubes filled with a heat transfer fluid (mineral oil). The solar energy heats the circulating oil to about 300°C (575°F). The heated oil is then fed to a heat exchanger where the heat is transferred to water to heat it to around 200°C (407°F) before it enters the boiler. Having hotter water entering the boiler means less coal is needed to heat it and produce the steam that turns the turbine to generate electricity.Vice president of Xcel Energy, and chief supply officer, Kent Larson, said in a press release that if the project meets expectations it may help “move the use of solar energy one step closer to being a potential technology for improving the environmental performance of coal-fired power plants.”CEO of Abengoa Solar, Santiage Seage, said the company believed the solar-coal combination would provide a cost-effective way of delivering solar energy. Xcel Energy’s ICT Program is aimed at developing, commercializing and deploying new technologies for electricity generation, energy storage, and so on, to support the company’s clean energy strategy. Xcel Energy is a major utility company in the US, servicing 3.3 million electricity customers and 1.8 million natural gas customers.Other companies are also developing or evaluating hybrid power generation plants to see if the combination can provide environmental benefits at a commercially viable cost. For example a group or companies have joined with the Electric Power Research Institute to study the feasibility of hybrid coal-solar plants in North Carolina and New Mexico, while in Florida NextEra Energy is developing a hybrid solar-natural gas plant. Colorado Integrated Solar Project Citation: First ever hybrid solar-coal power plant operating (2010, July 12) retrieved 18 August 2019 from https://phys.org/news/2010-07-hybrid-solar-coal-power.html More information: Colorado Integrated Solar Project Abu Dhabi to build ‘world’s largest’ solar plantcenter_img Explore further (PhysOrg.com) — The first ever hybrid solar-coal power plant is now operating at Unit 2 of the Cameo Generating Station near Palisade in Colorado. The demonstration project was built by Xcel Energy as part of its new Innovative Clean Technology (ICT) Program, and is designed to decrease the use of coal, increase the plant’s efficiency, lower carbon dioxide emissions, and test the commercial viability of combining the two technologies. © 2010 PhysOrg.com 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

Researchers design sixstate magnetic memory

first_imgThe main advantage of having six states is that it would increase the memory density while avoiding the problems inherent in miniaturization. Currently the primary strategy for increasing memory density is to miniaturize each memory element so that more of them can fit on a chip. However, at these small scales, the memory elements are so close together that they begin to interfere with each other’s states. The new design can avoid this problem, and also offers other advantages.”Going from two to six states would triple the density under certain conditions (for example, maintaining the lateral scale of the bit),” Klein said. “In addition, other advantages are also expected. The cost of the memory would probably decrease significantly, and when such bits are incorporated in a magnetic memory array, we may witness other benefits such as increased reading speeds.”The researchers expect that it may be possible to design patterns with even more magnetic states. For example, their simulations show that a pattern of four crossing ellipses would yield a memory element with eight magnetic memory states. “We intend to further increase the number of magnetic states and explore the limits of such an extrapolation,” Klein said. “In addition, we would like to progress towards fabricating a prototype that will help us convince the magnetic memory industry to make a shift towards multi-level magnetic memory.” Realizing the six-state magnetic element does not require any significant increase in complexity, such as adding layers, but rather involves simply structuring one of the magnetic layers differently—specifically, arranging the magnetic film into a pattern of three crossing ellipses. In the middle region where all three ellipses overlap, the researchers found that there are six different stable magnetic orientations. The orientations are parallel to the long axis of each ellipse, and can run in two opposite directions. If such a pattern with six magnetic orientations can be controlled and incorporated in a magnetic memory element, then the number of memory states can be increased from two to six. The researchers showed that such control is possible by using a technique called spin-orbit torque switching, which uses spin-polarized electric current to switch between magnetic states. This demonstration shows that the spin-orbit torques can write data onto the magnetic structure, showing the potential for using the structure as a memory element. The researchers, Yevgeniy Telepinsky et al., from Bar-Ilan University in Israel and New York University in the US, have published a paper on the new magnetic structure in a recent issue of Applied Physics Letters.This isn’t the first time that researchers have designed memory cells with more than two states, or bits. The best-known example is multi-level flash memory cells, which can store up to four bits per cell. While multi-level flash cells have advantages such as a higher density and lower cost, they also suffer intrinsic drawbacks such as lower writing speeds and higher power consumption.The new six-state memory element presented here is different because it is magnetic, whereas flash memory is electronic. Although electronic memories are currently the most commonly used type of memory, various types of magnetic random access memory (MRAM) are being actively researched due to advantages in low power consumption, fast operation, and long lifetime.”Our proposal paves the way for enjoying the benefits of multi-level cells in MRAM, making it even more attractive for applications,” Lior Klein, a physics professor at Bar-Ilan University and one of the study’s lead authors, told Phys.org. “Furthermore, since MRAM is different in its nature from flash, there is no reason that it should suffer from the drawbacks of multi-level-cell flash memory.” By arranging magnetic film into a pattern of three crossing ellipses, researchers demonstrated six magnetic configurations are possible in the overlapping region. Credit: Telepinsky et al. ©2016 AIP Publishing More information: Yevgeniy Telepinsky et al. “Towards a six-state magnetic memory element.” Applied Physics Letters. DOI: 10.1063/1.4948455 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. Six magnetic configurations generated by simulations. Credit: Telepinsky et al. ©2016 AIP Publishing (Phys.org)—Computers are often described with “ones and zeros,” referring to their binary nature: each memory element stores data in two states. But there is no fundamental reason why there should be just two. In a new study, researchers have designed a magnetic element that has six stable magnetic states, which paves the way toward realizing a six-state magnetic memory element. Journal information: Applied Physics Letters New technology reduces 30 percent chip area of STT-MRAM while increasing memory bit yield by 70 percent © 2016 Phys.org Explore further Citation: Researchers design six-state magnetic memory (2016, May 18) retrieved 18 August 2019 from https://phys.org/news/2016-05-six-state-magnetic-memory.htmllast_img read more

Move over Samba Its time to Zumba

first_imgZumba is not an exercise routine, it’s a philosophy of life. It’s an exotic cultural experience that includes dance steps and music from all over the world. The basic elements of Zumba are fun-filled and energetic, which makes it one of the most popular dance forms in the world. Being a high energy based dance form, Zumba requires a person to put in a great amount of physical strength.It is dance fitness program created by Colombian dancer and choreographer Alberto ‘Beto’ Perez back in the 1990s. Involving dance elements of many forms which includes Hip-hop, Salsa, Mambo, Cha-cha-cha, Samba, the Tango, Martial Arts, Belly Dancing and Bhangra, this energy fuelled exercise includes music with fast and slow rhythms as well as resistance training. The most interesting quality of Zumba is the fact that it engages its dancers in a sweat inducing mode of exercise while giving them the pleasure of enjoying a stress bursting dance party. A Zumba workout helps a person to burn calories as well as to lose weight. In general, a Zumba session lasts about an hour, which can burn around 300-600 calories. Also Read – ‘Playing Jojo was emotionally exhausting’With the increasing demand for Zumba in Delhi, many institutes have come up to meet this need. A very important thing to be kept in mind while practicing Zumba is to choose a Zumba trainer who knows the art well and a good place to ensure that along with all the exercise, the dance provides for a truly exuberant experience and helps to infuse some positive-energy.Choreography is simple so that participants don’t get too involved in getting the step right and lose out on the fun. It is so simple that everyone have a go at it. There is a warm-up routine at the beginning as well as a cooling down process in the end. The idea is to raise the heartbeat and then cool it, and then raise it again. There are no special diets as such to be followed during Zumba.  Also Read – Leslie doing new comedy special with NetflixZumba has now evolved to constitute various sub-categories including Zumba Gold, Zumba Toning, Zumbatomic, Zumba in the circuit and Aqua Zumba which includes Zumba dance steps which are performed inside the swimming pool.Additionally, there are many Zumba fitness videos as well as Zumba games available in market. Zumba’s popularity can be elucidated by the fact that many celebrities have adopted the routine including Jennifer Lopez, Jackie Chan, Kirstie Alley, Emma Watson, Neha Dhupia, Shakira among others.Zumba keeps the motivation at an all time high with a catchy soundtrack that includes a lot of Bhangra and Bollywood Beats. The basic goal of the Zumba dance instructors is to make people want to work out. Fun and easy to do, Zumba is the type of fitness exercise people will want to do every day because it’s different, effective and enjoyable.last_img read more

Central Ayurveda Research for Drug Development to observe Dhanvantari Divas on November

first_imgKolkata: The Central Ayurveda Research for Drug Development in Salt Lake has taken up a month long programme to observe Dhanvantari Divas on November 5.The institution under the Central Council for Research in Ayurvedic Sciences has been conducting various awareness programmes at its premises in Salt Lake for the past few days where knowledge is being disseminated among people from various walks of life. Public lectures are being conducted to spread awareness on how various ailments can be checked by adopting one of the traditional and oldest methods of treatment. Also Read – Rain batters Kolkata, cripples normal lifeDr Achintya Mitra, a research officer of the 50-day countdown programme for celebration of Ayurveda Day 2018 said awareness camps have been conducted at various places where trainings are being provided on a healthy life style. Various herbs and medicinal plants are also being distributed among people at free of cost. Trainings are also being provided on how to identify the medicinal plants. Dhanvantari Divas is also celebrated as the Ayurveda Day. It may be mentioned that according to Hindu mythology, Dhanvantari is an avatar of Vishnu. He appears in the Vedas and Puranas as the physician of the gods and the god Also Read – Speeding Jaguar crashes into Mercedes car in Kolkata, 2 pedestrians killedof Ayurveda. A marathon would also be organised in Salt Lake on November 5 to aware people about Ayurveda which is one of the oldest forms of treatment in India and how people can prevent various ailments only through a change in the lifestyle and food habit. Dr Sushovan Paul, President of Bengal chapter of the National Ayurveda Students and Youth Association said: “Ayurveda is an integral part of the country’s progress. It is not only a treatment but a philosophy of life as well. Ayurvedic treatment was introduced in Bengal in Gupta Era. Due to the apathy of the government at the Center, Ayurveda could not be promoted on a large scale. We are thankful to the present government for its new initiative.”last_img read more

From a movement to a political party

first_imgWouldn’t it be nice to know more about the journey of the Chief Minister from an IIT student to a political leader and youth icon that led to the birth of a new political party? Bloomsbury India launched the book ‘Arvind Kejriwal and the Aam Aadmi Party: An Inside Look’ in the presence of the author, Pran Kurup, and the Chief Minister of New Delhi, Arvind Kejriwal at the national Capital recently. The event was also presided over by Deputy CM, Manish Sisodia who unveiled the book. Also Read – ‘Playing Jojo was emotionally exhausting’The book provides a fresh and unique perspective on Arvind Kejriwal and the Aam Aadmi party (AAP) through keen observations and first-hand insights of an active AAP volunteer and close personal friend of Kejriwal from his undergraduate days at IIT Kharagpur. The book ultimately looks at the aftermath of AAP’s most recent power struggle, and the road ahead for AAP and its role in Indian politics.At the event, Arvind Kejriwal, said, “I am very happy to be at the launch of this book. Pran is a dear friend and a steadfast believer in AAP and my work over the years. I am happy to be here in the presence of my supporters and well-wishers at the launch of this book which is an excellent chronicle of AAP’s journey to bring politics back to our people. A keen observer of events with impressive analytical abilities Pran has been able to look at AAP’s journey through a lens of objectivity, providing his own perspective and suggestions for improvement at the same time. I wish him the very best.” Also Read – Leslie doing new comedy special with NetflixPran Kurup, author, added, “This is a book for people across the world hungering to know more about Arvind Kejriwal, Aam Aadmi Party (AAP), and their meteoric rise in Indian politics. My book shows the true nature of Arvind and AAP, which is to have faith and inspire people into believing that they can do whatever they set their sights on, which is reflective of the young start-up culture our country is witnessing today. Startups are about faith and belief. Arvind has managed over the years to instill this belief and faith in scores of young men and women who play a critical role in both the party and in governance” Rajiv Beri, Managing Director, Bloomsbury India, said, “This book is one of the first few titles we have published in our strategic push towards bringing political and contemporary books to the market.”The launch also included a panel discussion between Pran Kurup, Raghav Chadha, Spokesperson and Treasurer of Delhi Unit of AAP; Ashutosh, journalist-turned-politician and spokesperson of AAP; and Dilip Pandey, Convenor of the Delhi Unit of AAP that gave the audience insights into the past, present and future of the Aam Aadmi Party. The discussion touched upon a variety of topics including the act of writing a book about a friend, the importance of objectivity while doing so and the turn of events in 2014. The session was moderated by Abhinandan Sekhri, Co-founder and CEO, Newslaundry.last_img read more

State CID files chargesheet against Bimal Gurung 71 others

first_imgDarjeeling: State CID on Monday filed the charge-sheet for the June 8, 2017 case in which Gorkha Janmukti Morcha (GJM) supporters and leaders had locked horns with security forces in Darjeeling while a Cabinet meeting was on in the hill town. Around 72 persons including Bimal Gurung have been named in the charge-sheet.A CID team on Monday filed the charge-sheet on Monday at the Chief Judicial Magistrate Court in Darjeeling. “A total of 72 persons has been named in the charge-sheet including Bimal Gurung, Asha Gurung, Roshan Giri, Dipen Malay, Prakash Gurung and Swaraj Thapa,” stated Pankaj Prasad, Assistant Public Prosecutor, Darjeeling. Also Read – Rain batters Kolkata, cripples normal lifeA total of 7 persons including Binay Tamang, Mandip Sharma, Amod Mukhia, Jyoti Kumar Rai, Dewraj Dewan and John Rai has been discharged owing to lack of evidence. “However, the charge-sheet stated that investigation is still open and that the CID can file a supplementary charge-sheet later on,” added Prasad. The accused have been charged under various sections of the Indian Penal Code including Sections 307 (attempt to murder); 120B (criminal conspiracy), along with different sections of the West Bengal Maintenance of Public Order Act and Prevention of Damage to Public Property Act. Also Read – Speeding Jaguar crashes into Mercedes car in Kolkata, 2 pedestrians killedThe Gorkha Janmukti Morcha (GJM) under the leadership of Gurung had locked horns with the security forces on June 8, 2017. The GJM party was on agitation in the Hills. Police reports claim more than 45 security force personnel were injured in the clash. A police booth was set on fire. Around 15 police vehicles were torched along with a state government Bus. Army was deployed in Darjeeling, Ghoom and Kurseong to control the situation. On that day, the GJM had taken out rallies and staged a sit-in demonstration a short distance away from Raj Bhawan where the Cabinet meeting was taking place. Later, the demonstration turned violent and clashes ensued. The GJM in turn had alleged that many of their supporters were also injured in the clashes. Police had lodged a suo moto FIR and a case had been started at Darjeeling Sadar Police Station on June 9. The case was handed over to the CID on June 29, 2017. On September 6, arrest warrants were issued against Gurung, Asha Gurung, Roshan Giri and 5 front rung GJM leaders. The CJM Court had ordered them to appear in court and surrender in November 2017. Bimal Gurung, Asha Gurung, Roshan Giri and others failed to appear on the designated date. On March 28, 2018, the CID had prayed these absconders be declared as offenders and their movable and immovable properties be attached. The court then issued an order of attachment of Gurung’s house. It was attached on August 2. Following this, properties of other leaders including Prakash Gurung were also attached as per the court order. Prior to this, in June, Bimal Gurung and Roshan Giri’s names were struck off from the electoral rolls in Darjeeling.last_img read more

Mamata welcomes IAF officers return

first_imgKolkata: With India’s fighter pilot Abhinandan Varthaman returning to his homeland on Friday night after being in Pakistan’s custody for two days, Chief Minister Mamata Banerjee welcomed his return.”Welcome home #AbhinandanVarthaman Welcome home sweet home,” Banerjee wrote on her Twitter handle. Banerjee on Thursday accused the Narendra Modi government of seeking political mileage over the air strike carried out by the Indian Air Force in Balakot, stressing on the fact that the Centre is yet to divulge the truth about the terrorists allegedly killed in the strike. Also Read – Bose & Gandhi: More similar than apart, says Sugata Bose”The people of India have a right to know what exactly happened during the air strike. The Centre must allow our forces to speak the truth. They should also come clean on the number of terrorists claimed to have been killed during the air strike,” Banerjee had maintained. While speaking to the media at Nabanna on Thursday, the CM hit out at the Modi government, saying: “Ahead of the forthcoming elections, the Centre is keen on deriving political mileage from the air strike that has been conducted by our Air Force. The jawans defend our borders and we all hold them in high esteem. But politicising the whole issue only to satisfy one’s political interest is condemnable.”last_img read more

Dance prodigy makes a distinct debut

first_imgWhen children her age would only think of their upcoming board exams, Niharika Prakash – a disciple of world-renowned Odissi dancer Ranjana Gauhar – is leaving no opportunity to showcase her craft on the international stage. An eleventh-grade student of Modern School, Barakhamba Road was introduced to the art of Odissi dance at a tender age of seven, and since then Odissi has become an integral part of Niharika’s growth. With time she has learned to strike a balance between academics and her passion for dance. Also Read – Add new books to your shelf”I began dancing when I was seven. Back then, there wasn’t much academic pressure, but with time the work burden increased. Studies are hard, but I can confidently say that dance has helped me to perform better academically. It has taught me the importance of discipline and hard work,” says Prakash, adding, “There is no half-heartedness, there is no room for complacence for a dancer. Dance demands you give it your all, which is what I have tried to do. I wouldn’t have done any better at studies if I didn’t dance. Over the years, I have learned to prioritize, to multi task, to work hard and persist. I still spend 3 hours a day in my dance class and yet manage to get 90% and above.” Also Read – Over 2 hours screen time daily will make your kids impulsiveThis dedicated pupil knows there is no substitute for hard work. The young dancer – along with Utsav Dance Troupe – has performed at multiple prestigious events, including the Konark Dance Festival, the Khajuraho Dance Festival, Sangeet Natak Akademy (Imphal and Delhi), Kurukshetra Mahotsav, and regaled audiences in Spain and Argentina. On being asked about the most memorable experiences in her career, Prakash narrates the time when she was selected to represent her school (Raghubir Singh Junior Modern School) in an inter-school exchange program held in Boardilla Del Monte, Madrid, Spain. (In 2012). “I was ten and barely knew how to dress myself up. I had to muster up the courage to perform my first solo in front of hundreds of little Spaniards. It was a cold morning and the entire school of Teresa Berganza in Boardilla Del Monte was out in the court to watch me perform. I was so anxious. The music played, I began to dance, bare feet on the cold concrete ground of the school field. The audience was so appreciative of the performance that the children imitated my eye gestures and hand movements for days.”Every classical dance form has its own specialty and each person views a dance form differently. Niharika was more drawn to Odissi than any other style of dancing. “Odissi appealed to me as a confluence of grace and strength. A dance form with delicate eye and neck movements, supple torso movements yet rigorous footwork,” she says. Recalling how her grandmother and mother have always taken a keen interest in Indian culture, Niharika feels a tad nostalgic. “When I turned three, I tagged along for dance recitals and cultural events and learned to appreciate Indian art. This is how it all started,” she says.last_img read more

Fish trader shot dead in Howrah

first_imgKolkata: A fish trader was shot dead by a few miscreants in Howrah on the wee hours of Friday.According to sources, the deceased fish trader identified as Tarak Bhuniya, used to sell fish at Parbati Bazar near Bose Para in Byantra. He used to buy fish from the Howrah wholesale fish market. Like other days, Bhuniya was going to the Howrah fish market to buy fish on his bicycle, on Friday at around 4 am. When he was crossing the Bankim Setu over Howrah railway station, a few miscreants surrounded him and tried to snatch away the bag containing money. Also Read – Rs 13,000 crore investment to provide 2 lakh jobs: MamataWhen Bhuniya tried to resist, the miscreants fired multiple bullets at him. Two bullets penetrated his abdomen and chest and he fell on the road, bleeding profusely. Hearing his screams, some local residents ran to his rescue. Seeing them, the miscreants fled from the spot. Bhuniya was rushed to Howrah District Hospital, where he revealed his identity. However, a few minutes later, he succumbed to his injuries at the hospital. The hospital authorities immediately informed Golabari police station. Also Read – Lightning kills 8, injures 16 in stateSources informed that there is a CCTV camera installed near the murder spot. In the footage collected from it, the miscreants were seen firing at Bhuniya. Police claimed that the killers have been identified and will be behind bars soon. However, till Friday night no one has been arrested. Though police are claiming that the miscreants have been identified, the motive behind the murder is still not clear. Sleuths suspect that Bhuniya might have had some business rivalry with someone, or it could have been a case of snatching money, where the miscreants shot Bhuniya because they were resisted. Sleuths are also checking to know if he has any family problem as police came to know that he had got married twice and both of Bhuniya’s wives are alive.last_img read more

CESC to give guidelines to consumers on electrical safety

first_imgKolkata: CESC will soon give guidelines to nearly 3.5 million of its consumers on electrical safety. A CESC spokesperson said the monsoon usually is the worst time from the point of view of electrical dangers. The company has therefore drawn up a list of dos and don’ts.The users have been advised not to touch electrical switches and appliances with wet hands. Using mobile phones while charging is also a dangerous practice. During heavy rains and lightning, it is safer to switch off electrical appliances and unplug them from the wall socket. Everybody has been advised to avoid touching dangling conductors or wires. Also Read – Rs 13,000 crore investment to provide 2 lakh jobs: MamataOut of home, citizens have been advised to avoid close proximity to electrical poles, stray wires or electrical distribution boxes during rains. It is equally dangerous to touch loose/bare wires and electrical equipment out of home. Some of the electrical fires at the workplace are caused when people forget to switch off ACs or other electrical equipment when not in use. For any emergency in CESC areas, citizens have been advised to call 1912/18605001912/44031912.last_img read more