now browsing by month
‘Traffic light’ food labels reduce calories purchased in hospital cafeteria Explore further Audi´s Travolution device lets drivers know how fast to drive to coast through an upcoming green light. The company hopes the device will improve traffic flow for all drivers. Image credit: Audi. (PhysOrg.com) — If you drive down the same roads every day, you probably know the patterns of familiar stop lights – how long they take to turn green, or when the green arrow will appear. For light-conscious drivers or anyone looking to save some fuel, Audi is developing a new device that lets you know when upcoming stop lights will turn green, and even calculates how fast you should drive in order to coast through them. Citation: Hit all green lights with new Audi gadget (2008, October 24) retrieved 18 August 2019 from https://phys.org/news/2008-10-green-audi-gadget.html The device, called Travolution, communicates with special transmitters fitted inside traffic lights up to 300 yards away. After calculating the car’s position, the in-car gadget determines how much time remains until a green light turns red, or red light becomes green. If you can safely make it through the intersection, the device displays the optimum speed on a screen in your car. In addition, if there’s no traffic nearby, the device can even make the light turn green for you. If many cars are equipped with the system, the Travolution could serve as a communications link between cars and the traffic light, causing the light to adjust its signal based on how many cars are approaching. The gadget works with any vehicle using Wireless Local Area Network (WLAN) technology, although traffic lights must be equipped with the transmitters. The Travolution system, which was originally developed by the Technical University of Munich in conjunction with the traffic technology firm GEVAS, is intended to improve traffic flow and fuel economy, and reduce pollution. It could also help in meeting new European Union emissions standards.Kate Dixon of Audi UK said that if 10 percent of cars in a city were fitted with the technology, all drivers would notice an improvement in traffic flow, mainly in reduced start-and-stop driving. However, the device would not be very helpful in extremely dense, bumper-to-bumper traffic, since drivers don´t have as much control over their speeds.During two years of trials in Ingolstadt, Bavaria, Audi equipped 46 traffic lights with the wireless transmitters. Tests showed that, in busy intersections, cars equipped with the device hardly ever had to stop on red. Audi plans to perform further tests, and did not know how much the Travolution would cost if it is ever commercialized.via: Ecogeek 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.
The Volvo S60 sedan. The Collision Warning with Full Auto Brake and Pedestrian Detection system fitted in the 2011 model S60 was first announced early last year. It uses a computer fed by information from a wide-angle radar system that detects objects and monitors their speed and distance from the car, and from a camera fitted near the rear view mirror. Using this information the computer identifies the objects and determines if they are on a collision path.If a collision is imminent the car gives the driver an audible and visual warning and brakes hard if the driver does not react quickly enough. At speeds under 35 km/h a collision is prevented, while at higher speeds it may not be possible to avoid a collision but the impact and subsequent injuries are reduced. Explore further (PhysOrg.com) — Swedish vehicle manufacturer Volvo’s goal is that by 2020 nobody should be killed or seriously injured in a new Volvo and their cars should not seriously injure or kill other road users or pedestrians. To help achieve this aim the company has developed a detection system for cars that can detect pedestrians, predict when they might move in front of the vehicle and automatically apply the brakes if the driver does not. The system has been successfully tested with a dummy, but is not completely foolproof because in one trial the dummy was hit even when the car was traveling below 35 km/h. This could have been because crowds gathered on either side of the track confused the system, which worked perfectly when the crowds moved back.Other computer systems in the Volvo S60 include an alarm triggered by random or uncontrolled weaving of the car to wake the tired or distracted driver and warning lights on the outside mirrors to warn drivers of vehicles they cannot see. Another system monitors lane dividers and warns the driver if they cross the dividers without first using a turning indicator. The headlamps are also under computer control and move to follow the curve of the road.Volvo’s pedestrian detection system is not the first, since Mercedes-Benz and BMW have already introduced pedestrian detection in night vision displays, but Volvo is the first system to couple a detection system with automatic braking. New car tech: Not just crash protection, but prevention Citation: New Volvo pedestrian detection system brakes for you (2011, February 25) retrieved 18 August 2019 from https://phys.org/news/2011-02-volvo-pedestrian.html More information: Volvo website © 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.
© 2014 Phys.org Lab study suggests small layer of water, CO2 and silicate lies beneath tectonic plates Explore further More information: BBC Future: www.bbc.com/future/story/20141 … n-who-makes-diamonds Citation: Geo-researchers making diamonds out of odd materials, including peanut butter (2014, November 11) retrieved 18 August 2019 from https://phys.org/news/2014-11-geo-researchers-diamonds-odd-materials-peanut.html Robson points out that despite a lot of effort, scientists still don’t know the true composition of the Earth’s core and its upper and lower mantle. Much more is known, of course, about the upmost layer, the crust—at least the top portions. Complicating the problem is that evidence thus far indicates that our planet doesn’t match the composition of meteorites that have struck the Earth—they seem to have more silicon than does our planet suggesting either that perhaps Earth wasn’t formed from them, or that the silicon is too deep for us to detect. In his lab, Robson and his colleagues are trying to learn more about the lower mantle and to do that, he’s attempting to expose certain materials to the conditions that are thought to be present, to see if they match readings made from the surface. They have piston based presses that can exert enormous forces on a material, while the material is simultaneously baked by a furnace. Such conditions force the atoms in the material closer together making it denser. The changed material is then removed from the press and crushed to allow for closer inspection. The team runs sound waves through the material to see if they are impacted in the same ways as sound waves that are sent through the Earth. They report that it appears that silicon is not a material that would make a match—though the changed material, named ringwoodite, is able to hold water, suggesting there may be vast amounts of it beneath us.The press and furnace are able to make diamonds as well. When looking into the possibility that carbon dioxide in the mantle was pushed deeper, into mineral rich iron below, the team found that when subjecting similar material to pressure and heat, the oxygen was stripped away leaving just dense carbon—diamond. As a publicity stunt, the team also tried pressing peanut butter, which loosed a lot of hydrogen, but because of its high carbon content, also resulted in the creation of a small diamond. (Phys.org) —A team of researchers working in a lab at the Bayerisches Geoinstitut in German is seeking to learn the true composition of Earth’s interior, BBC Future reports, and they aren’t afraid to resort to stunts to further their cause. The team, led by David Robson, is putting various materials into presses while also heating them to hopefully imitate the conditions beneath our feet at various depths. This is a collection of 0.02, 0.03 and 0.04 carat solitaire diamonds weighing in total 5.36 carats. Credit: Swamibu/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.
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. As Chini notes, huge strides have been made over the past few decades in using light to convey information, while at the same time, electronic devices have continued to be limited by the upper frequency limits at which electric currents can be driven. As he also notes, prior research has shown that it is possible to use light in the form of laser pulses to drive electrons through a bulk insulator at much higher than normal frequencies, but until now, there was no way to measure the oscillations of those electrons, a necessary part of applying them in a high-speed device.In this new effort, the researchers took advantage of the fact that when electrons speed up, they emit what are known as high-order harmonics, which just happen to be a direct reflection of the motion of those electrons. They used an attosecond streak camera to measure these harmonics in a silica nanofilm and noted that the light was emitted in bursts lasting less than 500 attoseconds. These findings suggest that it should be possible to build devices that use lasers to push the oscillating frequency of electrons up to 100 times that of devices currently used to test the limit (into the multi-petahertz range). Currently, Chini notes, more work still needs to be done—subtle variations that occur in the process will have to be removed, for example, and testing will have to be done to see if the same results can be obtained with materials other than silica. Also, it is still not clear if the laser-pulsed approach causes any negative impact on current production. Citation: Researchers demonstrate extension of electronic metrology to the multi-petahertz frequency range (2016, October 20) retrieved 18 August 2019 from https://phys.org/news/2016-10-extension-electronic-metrology-multi-petahertz-frequency.html (Phys.org)—A team of researchers with the Max-Planck-Institut für Quantenoptik has found a way to link previously demonstrated laser light-induced high-speed switching of an insulator between conducting states and high-frequency light emissions from insulators blasted with laser pulses. In their paper published in the journal Nature, the team describes the techniques they used to pull off this feat. Michael Chini with the University of Central Florida offers a News & Views piece on the work done by the team in the same journal issue, and explains what hurdles still need to be overcome before devices making use of the technology can be developed. © 2016 Phys.org Journal information: Nature Electrons at the speed limit Attosecond pulse metrology in bulk SiO2. Credit: Nature 538, 359–363 (20 October 2016) doi:10.1038/nature19821 More information: M. Garg et al. Multi-petahertz electronic metrology, Nature (2016). DOI: 10.1038/nature19821 , www.nature.com/nature/journal/ … ull/nature19821.htmlAbstractThe frequency of electric currents associated with charge carriers moving in the electronic bands of solids determines the speed limit of electronics and thereby that of information and signal processing1. The use of light fields to drive electrons promises access to vastly higher frequencies than conventionally used, as electric currents can be induced and manipulated on timescales faster than that of the quantum dephasing of charge carriers in solids2. This forms the basis of terahertz (1012 hertz) electronics in artificial superlattices2, and has enabled light-based switches3, 4, 5 and sampling of currents extending in frequency up to a few hundred terahertz. Here we demonstrate the extension of electronic metrology to the multi-petahertz (1015 hertz) frequency range. We use single-cycle intense optical fields (about one volt per ångström) to drive electron motion in the bulk of silicon dioxide, and then probe its dynamics by using attosecond (10−18 seconds) streaking6, 7 to map the time structure of emerging isolated attosecond extreme ultraviolet transients and their optical driver. The data establish a firm link between the emission of the extreme ultraviolet radiation and the light-induced intraband, phase-coherent electric currents that extend in frequency up to about eight petahertz, and enable access to the dynamic nonlinear conductivity of silicon dioxide. Direct probing, confinement and control of the waveform of intraband currents inside solids on attosecond timescales establish a method of realizing multi-petahertz coherent electronics. We expect this technique to enable new ways of exploring the interplay between electron dynamics and the structure of condensed matter on the atomic scale.Michael Chini. Optical physics: Speedy electrons exposed in a flash, Nature (2016). DOI: 10.1038/538325a
A grand illustrious play, directed by veteran director Bhanu Bharti, Tughlaq closed on a high note with star-studded performances. The life of one of the most celebrated emperors of Delhi comes alive on stage through the magic of veteran director Bhanu Bharti. This extravaganza received an overwhelming response from the theatre lovers of Delhi. The play was performed at the ruins of the historic Feroz Shah Kotla to a fullhouse jam packed with glitz and glamour,. Also Read – ‘Playing Jojo was emotionally exhausting’The miraculous realm of the celebrated king was displayed through persuasive performances, engrossing and riveting dialogues. The spectacular ambience had grabbed the eyeballs of almost all the theatre lovers in the Capital.The organisers of the show – Department of Art Culture and Language and Sahitya Kala Parishad – arranged a 1,200 makeshift sitting arrangement at the vast courtyard of the archeological site where Bharti presented the performance. Also Read – Leslie doing new comedy special with NetflixCommenting on the response of the audience Bhanu Bharti, Director of Tughlaq said, ‘We were stunned with the startling and mind-blowing response of the audience. The long queues and the large footfall during every show is a great inspiration and boost for me as a director. Such theatre events will encourage a large number of actors and directors to take active part in promoting theatre.’The play was performed on a magnificent scale, at this heritage monument site after a long hiatus of four decades. Last, the play was staged by theatre patriarch Ebrahim Alkazi at Purana Quila in 1970s. The play boasted of a star-studded cast with many eminent theatre, Bollywood and television personalities playing key roles. Bollywood actor Yashpal Sharma, who has films like Gangaajal, Aarakshan and Hazaaron Khwaishen Aisi to his credit, played the main lead of Tughlaq. ‘It has been a great experience for me to play the lead role of Tughlaq. The tremendous response of audience encourages actors like me to work hard for my audience and fans. The audience of Delhi has been very kind to accept Tughlaq with open arms. I would love to play such roles in theatre again,’ said Yashpal Sharma. The author skillfully portrayed the life and reign of Tughlaq through ineresting dialogues and rivetting scenes. The sultan ended his career in bloodshed and political chaos. The play showcased the slow disenchantment felt with the new politics of independent India, the gradual erosion of the ethical norms that had guided the movement for Independence and the coming to terms with cynicism and real politics.’I was awestruck and impressed with the amazing show. The actors have done a phenomenal job and have played their parts well. I would never get tired of watching this show and would love to see it again and again,’ said Priyanka Kapoor, a young theatre enthusiast.
Kolkata: The driver of a private car was killed and its four female occupants injured when it collided head on with a private bus on Dufferin Road in Esplanade area on Sunday afternoon.The injured, who are MA students of distance education at Rabindra Bharati University (RBU), have been admitted to SSKM hospital. The condition of one Rakhi Manna of Gazipur, Howrah, is stated to be critical. According to police sources, the bus of route no 12D was headed towards Howrah station, while the private vehicle with the four students was travelling in the opposite direction towards Second Hooghly Bridge when the accident occurred at around 2.10 pm. Also Read – Rain batters Kolkata, cripples normal life”Prima facie it appears that the private car somehow went to the wrong lane either in a bid to overtake another vehicle or due to loss of control because of wet road and rammed into the bus. The bus tried to take left to avoid the collision and lost control and went on to the footpath. We are checking CCTV footages and gathering circumstantial evidences for further leads,” an officer of Maidan police station said.The accident spot near the crossing of Mayo Road and Dufferin Road comes under the jurisdiction of Maidan Police station. The bus and the mangled private vehicle have been seized and search is on for the bus driver who managed to flee. Also Read – Speeding Jaguar crashes into Mercedes car in Kolkata, 2 pedestrians killedThe driver of the vehicle identified as Pappu (25). who was rushed to SSKM hospital by the police, was declared brought dead.The four others, who have suffered injuries, include Sunita Jana of village Binala under Joypur police station in Howrah, Sanchita Karmakar of village Thalia, Joypur, Howrah, Rajashree Manna and Jagatballavpur Howrah and Rakhi Manna of Gazipur, Howrah. All of them were returning home from Joypuria College, which was the centre for their MA examination under distance mode. They were all headed towards their residences at different places in Howrah district.Among the four students, Rakhi has suffered severe injuries on her head and mouth, while the condition of other three are stated to be stable.
The Union Home Ministry has asked the Telangana government to get tough against three youths, who were intercepted in Nagpur minutes before they were to fly to Srinagar to allegedly join jihadi groups first and then ISIS.The youths –Mohd Abdulla Basith, Syed Omer Farooq Hussaini and Maaz Hasan Farooq –were arrested on Sunday night upon arrival in Hyderabad after a clear instruction from the Home Ministry not to let them off for the second time, official sources said. Also Read – Punjab on alert after release of excess water from Bhakra damThe three youths were let off earlier in September 2014 when they attempted to go to Afghanistan, Iraq-Syria via Bangladesh, along with two others –Abrar and Noman.At that time, the youths were neither arrested nor slapped with any criminal case.Security officials were of the opinion that first time offenders can be handled with a lenient approach but repeat offenders have to be taken seriously and action have to be taken, sources said. “A message has to be sent to everyone that if anyone willingly tries to commit same mistake again and again, he or she has to face law. The message has to be loud and clear. There will be no leniency to the repeat offenders”, they said. Also Read – Union Min doubts ‘vote count’ in Bareilly, seeks probeBasith, Hussaini and Farooq, all cousins and aged around 20-22, were brought to Hyderabad on Sunday and after sustained interrogation put under arrest. The youths were on Monday produced in a local court which remanded them in judicial custody.The youths, related to former president of Student Islamic Movement of India (SIMI) late Syed Salahuddin, were booked on charges under sections of IPC 121 (of waging, or attempting to wage war, or abetting waging of war, against the government), 121-A (conspiracy to wage war against government), 120 (B) (criminal conspiracy), and also under relevant sections of Unlawful Activities (Prevention) Act. Police is expected to seek their custody tomorrow for further investigation and examine witnesses. Sources said the trio have reportedly confessed to have jihadi ideology and in this regard they entered into criminal conspiracy and tried to go to Afghanistan, Iraq, Syria and Palestine via Kashmir for furtherance of unlawful activities and in order to join hands with jihadi forces of ISIS/ISIL to wage war against states – India or elsewhere.They also confessed to have decided to meet Asiyan Andrabi, chief of Dukhtaran-e-Millat in Kashmir and seek her help to cross the border to enter PoK.
Kolkata: Eastern Railway will celebrate the Golden Jubilee of its most prestigious Kolkata Rajdhani Express on Sunday in a befitting manner. Harindra Rao, General Manager, Eastern Railway, will first convey his best wishes and greetings of this epoch-making occasion to all the passengers of the train and then will release a greetings stamp to mark this special event memorable. To mark the occasion, brand new linen and disposable napkins with the greetings of the 50 years of the Express train will be distributed among the passengers. Greetings messages will be sent through SMS by CRIS to all the passengers of the Kolkata Rajdhani Express on Sunday who have registered their mobile numbers in the requisition slip. Standees communicating the greetings messages on the occasion of celebration of 50 years of this historic train will be installed at five different locations. Special cake-cutting ceremony will also be arranged to commemorate it. Greetings of this historic occasion will be telecast in the video wall of the station and in the destination boards of the train as well as will be communicated through public address system.
Kolkata: Police on Wednesday night arrested a Bangladeshi national and recovered from his possession 400 pieces of methamphetamine tablets commonly called as Yaba weighing around 40 grams.Acting on a tip off, the policemen raided a guest house in Collin Lane in the Park Street where the accused, Tapas Ahmed, was residing. The police said Ahmed, a resident of Hazaribagh in Dhaka, came to the guest house a couple of days ago. The police recovered the psychotropic substance generally smuggled from Burma. Also Read – Rs 13,000 crore investment to provide 2 lakh jobs: MamataAccording to the police the value of seized drugs is around Rs 80,000. Police suspect that the accused used to sell the narcotics to boarders staying in the guest houses and hotels of Collin Lane, Marquis Street, Free School street area, including the foreigners. During the preliminary investigation, the police came to know that Ahmed used to get these substances from Burma and smuggled into the country via Bangladesh. Police also suspect that some of the employees of the hotels and guest houses are involved in the incident. The police are trying to identify them. Also Read – Lightning kills 8, injures 16 in statePolice said Ahmed has been staying in the country for quite sometime. He also failed to provide passport or any valid documents. These tablets were circulated among the college students and the inmates of various hostels and guest houses in various parts of the city. There is a demand of these tablets among the college students. Police are also investigating if the accused has been a part of any international drug peddling racket. A detailed probe has been initiated in this regard. A case was started by the Park Street police station and the accused has been booked under Section 22(b)/29 of the NDPS Act.
Raw foods are said to be the healthiest for the body as cooking through traditional methods such as frying or baking causes a significant nutrient loss. However, there are a few other methods through which you can enjoy your favourite foods while deriving considerable health benefits from them. Experts list some tips on how one can keep the nutrition of food intact. – Poaching is a great way of preparing fish, meat, eggs and fruit. Simmer food in a small amount of water in such a way that it retains its moisture and essential nutrients. As water does not add any fat to food, poaching is considered an extremely healthy cooking method. Also Read – Add new books to your shelf-Blend instead of juicing: While juicing fruits and vegetables, you essentially remove all the fibrous material from the final product and are left with a rather sugary juice. Blending whole fruits and veggies keeps the pulp and fibre intact so you consume a thicker, more wholesome juice or smoothie. -Don’t peel: Most fruit and vegetable peels are rich in vitamins, minerals and antioxidants. To keep maximum nutrients intact while cooking, it is, best to boil, grill or poach without peeling. Also Read – Over 2 hours screen time daily will make your kids impulsive-Grill to ensure the least amount of nutrient loss while making the fat drip off. The high heat from grills seals in the moisture within food, so there is no additional butter or oil required to cook. -While boiling food, retain the cooking liquid for future use (like soups and stocks) as most of the nutrients leach out into the water during the boiling process. Use pots with lids while cooking (Pressure cooker is a better option). -Do not store fruits and vegetableS for a longer period of time, eat them as fresh as possible. -Eat freshly cooked food and avoid re-heating it as it destroys the chemical structure of nutrients and makes them impotent. -Wash vegetables and fruits before cutting and chopping them (never wash them after it is cut as the nutrients will drain into the water). -Harmful enzymes are activated by high temperature, so it is best to cook food in a preheated pan or oven or in water that is already boiling.