Company reps at the demo said the projector could be used to share images or video with others that are nearby and could even be used to play video games. In the demo, images projected on a screen were up to 50 inches, which is certainly big enough to watch movies or give slide shows. It’s also pretty easy to imagine users conversing via Skype, or cruising the Internet while in bed with web pages displayed on the ceiling.Samsung did not announce pricing nor an availability date for the Beam, but expectations are that it will land in stores sometime in the second quarter of this year. Citation: Samsung announces the Galaxy Beam Smartphone with built-in projector (2012, February 27) retrieved 18 August 2019 from https://phys.org/news/2012-02-samsung-galaxy-smartphone-built-in-projector.html (PhysOrg.com) — Cell phones are great, but one of their limitations is the size of the screen, which of necessity has to be small. To get around this problem, engineers have been for years toying with the idea of building a projector into the phone so that images can be displayed on any nearby flat surface. Unfortunately, until now, such phones proved too bulky for users to accept. Now, however, Samsung appears to have jumped that hurdle as it announces the Galaxy Beam, a new, small, thin and lightweight phone that has a projector built into it that allows users to project whatever is on the screen onto any nearby surface. Samsung Intros AMOLED Beam, Its Latest Beam Projector Mobile Phone © 2011 PhysOrg.com Most who have seen a demo of the Beam at this year’s Mobile World Congress in Barcelona agree that it’s a game changer. Not only is the phone able to project stuff onto walls but the stuff it projects is bright (15 lumens) clear and sharp. And it’s just 12.5mm thick, which is of course slightly more than some of its non-projector competitors, but well within comfort range. Oddly, the phone demoed was running Google Android 2.3 rather than Ice Cream Sandwich, on a 1GHz dual-core processor; something that will likely change once the phone is officially released. It also has 8GB of internal memory, a 5MP camera and a 2000mAh battery to keep the phone running despite the extra demands of the projector. Explore further When looking down holding the phone in the palm of the hand, the projected image is shot out of the lens onto a nearby wall (sort of like holding a flashlight). If the phone is held upright, the image is projected onto the ceiling. It’s the first mainstream phone to offer everyday customers in-phone projection. 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.
GE’s FlexEfficiency 60 Combined-Cycle Power Plant. GE’s new triple-threat hybrid power plant technology selected to go up in Turkey Explore further The development of the new turbines comes at an opportune time for GE: natural gas prices have fallen dramatically in the United States over the past year as a result of new extraction methods. At the same time, rising concern about the carbon emissions from coal plants has utility companies eagerly looking for new ways to produce power. In addition to producing less carbon, the new turbines will give plant operators much more flexibility in responding to fluctuations in power demand. Coal plants are notoriously slow at ramping up or down, and older natural gas turbines weren’t much better. The new line of turbines from GE allows for ramping up or down in minutes as opposed to hours, making them an attractive option for plants that use renewable resources such as wind or solar power. Being able to power-up during sudden periods of diminished sunlight—when a sudden thunderstorm hits, for instance—allows operators to switch over to natural gas almost instantly. The company claims the new line is also more efficient than previous natural gas burners, achieving 61% thermal efficiency.With this introduction, GE announced that it has already taken $1.2 billion worth of preorders for the FlexEfficiency 60 line, with sales to Saudi Arabian, Japanese and American utilities. The immediate interest has made it, the company says, the most successful introduction of a new energy portfolio in the company’s history.According to representatives, GE’s advances in jet engine materials that allow for more precise control of internal temperatures were applied to the development of this new line of natural gas burning turbines. Such precision is what makes the turbines more flexible and efficient. The new turbines will be built at the company’s Greenville, South Carolina facility. 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: Press release (Phys.org)—General Electric has unveiled its new line of highly efficient natural gas burning turbines for use in generating electricity. The new turbines are able to rapidly increase or reduce their power output to meet demand, making them, the company says, ideal companions to renewable resource based energy platforms. The new line of FlexEfficiency 60 turbines will be produced in several configurations ranging from 185MW to over 300MW, with initial deliveries scheduled for some time next year. © 2012 Phys.org Citation: GE introduces natural gas FlexEfficiency 60 turbine (2012, October 2) retrieved 18 August 2019 from https://phys.org/news/2012-10-ge-natural-gas-flexefficiency-turbine.html
© 2013 Phys.org More information: Enhanced reversibility and unusual microstructure of a phase-transforming material, Nature 502, 85–88 (03 October 2013) DOI: 10.1038/nature12532AbstractMaterials undergoing reversible solid-to-solid martensitic phase transformations are desirable for applications in medical sensors and actuators, eco-friendly refrigerators and energy conversion devices4. The ability to pass back and forth through the phase transformation many times without degradation of properties (termed ‘reversibility’) is critical for these applications. Materials tuned to satisfy a certain geometric compatibility condition have been shown to exhibit high reversibility, measured by low hysteresis and small migration of transformation temperature under cycling. Recently, stronger compatibility conditions called the ‘cofactor conditions’5, 15 have been proposed theoretically to achieve even better reversibility. Here we report the enhanced reversibility and unusual microstructure of the first martensitic material, Zn45Au30Cu25, that closely satisfies the cofactor conditions. We observe four striking properties of this material. (1) Despite a transformation strain of 8%, the transformation temperature shifts less than 0.5?°C after more than 16,000 thermal cycles. For comparison, the transformation temperature of the ubiquitous NiTi alloy shifts up to 20?°C in the first 20 cycles9, 16. (2) The hysteresis remains approximately 2?°C during this cycling. For comparison, the hysteresis of the NiTi alloy is up to 70?°C (refs 9, 12). (3) The alloy exhibits an unusual riverine microstructure of martensite not seen in other martensites. (4) Unlike that of typical polycrystal martensites, its microstructure changes drastically in consecutive transformation cycles, whereas macroscopic properties such as transformation temperature and latent heat are nearly reproducible. These results promise a concrete strategy for seeking ultra-reliable martensitic materials. 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 Various hierarchical microstructures in Au30, the alloy most closely satisfying the cofactor conditions for both type I and type II twin systems. Credit: Nature 502, 85–88 (03 October 2013) doi:10.1038/nature12532 Citation: Researchers develop technique for enhanced reversibility of a phase-transforming material (2013, October 3) retrieved 18 August 2019 from https://phys.org/news/2013-10-technique-reversibility-phase-transforming-material.html (Phys.org) —A team of researchers at Minnesota State University has created a martensitic metal alloy that degrades very little after application of more than 16,000 thermal cycles. In their paper published in the journal Nature, the team describes how they applied mathematical theory to a zinc-gold-copper alloy and found it markedly improved the alloy’s ability to withstand degradation due to multiple heating-cooling cycles. Journal information: Nature Researchers devise a means to obtain abnormal grain growth in metal using cyclic heat treatment Metals that return to a previous physical shape after being changed (bent, crumpled, etc.) using certain techniques are called a martensitic metals—typically they are created by mixing two or more metals together to create an alloy and then applying heat to cause the metal to revert back to a desired state after being deformed. Scientists have been working steadily for many years to create different metal alloys for different purposes—martensitic metals in particular are highly prized because they can be put to special purposes such as in creating stents for medical purposes. But martensitic metals have one major drawback, they can only be disfigured and reversed a few times before they start to degrade, making them unsuitable for further use. In this new effort, the research team in Minnesota has found a way to create one alloy that is able to withstand thousands of heating-cooling cycles without losing its reversibility attributes.Their success the team explains, came about as a result of applying known mathematical theories related to stress properties of metals. Martensitic metals degrade because of changes to a transition layer between the different phases. Working the formulas, they report allowed them to eliminate this layer, effectively removing the part of the alloy that allowed for degradation.To test their idea, the team chose a metal alloy that had previously been found to be very robust when exposed to repeated thermal cycles. They then fine-tuned the proportions of the base metal ingredients to conform with what they had worked out with the math formulas until they hit on one that was nearly impervious to repeated thermal cycles.The team reports that the alloy they developed also had an unusual riverine microstructure not seen before in a martensitic metal. Perhaps more importantly, it appears that their technique might work with other alloys or non-metal materials, allowing for the creation of as yet unimagined real-world materials in a variety of applications.
Ibn Sina was a Persian scientist and philosopher, who as part of his observations, traveled a lot and wrote about what he saw, along with his interpretations of subjects ranging from medicine to astronomy. It was one of those texts, called Kitab al-Shifa, about physics, meteorology, and especially astronomy that caught the attention of the researchers—most particularly a section that described a bright object appearing in the sky in the year 1006. The section had been studied before, but the account had been attributed to a discussion of a comet. In this latest look, the researchers suggest that the description was actually that of SN 1006. In addition to the timing, the detailed description, they note, sounds more like the sudden appearance of an exploding star. In their translation, Sina describes an object that was very bright and that changed color over time before fading away—even noting at one point that the object threw out sparks.SN 1006 was noted and described by others around the world, from places as far-flung as Morocco, Japan, Yemen and China, but none of those descriptions included information about the object changing colors. Sina wrote that the object started out as faint greenish-yellow, that it twinkled a lot, especially at its brightest, and that it became whitish before it disappeared altogether.Most modern astronomers believe that SN 1006 was not just a Ia supernova (which occur when a white dwarf is pulled into another star causing it to blow up due to the overabundance of matter), but that it was the result of two white dwarfs colliding. This new information from an ancient part-time astronomer, the researchers suggest, may help to better understand an event that occurred over a thousand years ago. © 2016 Phys.org Explore further Journal information: arXiv New study suggests long ago brightest star explosion was rapid type Ia supernova The Arabic text from the report of SN 1006 of Ibn Sina in al-Shifa from the Arabic edition by Madkur et al. (1965), page 73. The relevant text starts in the middle of the second line from the top and ends almost at the (leftmost) end of the 3rd-to-last line from the bottom of the main text. The writing in the left margin is the Arabic line number 15. The 4th line (line 14) reads (starting from the right) for the 2nd to 4th word kawkab min al-kawakib , i.e. a star among the stars, and at the end of that line it specifies the year (the leftmost word is hijra). The lines at the bottom indicate variant readings in different manuscripts, none of which change the content and meaning of the relevant text about the new star: the words for long and hijra are missing in one or two manuscripts. Credit: arXiv:1604.03798 [astro-ph.SR] (Phys.org)—A trio of German researches has uncovered evidence of the Arabic scholar Ibn Sina’s sighting of supernova 1006 (SN 1006). The new evidence will sit alongside that of others around that globe that reported details of what has been described as the brightest stellar event ever recorded by human beings. In their paper uploaded to the preprint server arXiv, Ralph Neuhaeuser, Carl Ehrig-Eggert and Paul Kunitzsch describe the text under study, their translation of it and the relevance of the information recorded by the ancient skygazer. 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. Citation: Examination of ancient text reveals details of Ibn Sina’s sighting of supernova (2016, April 28) retrieved 18 August 2019 from https://phys.org/news/2016-04-ancient-text-reveals-ibn-sina.html More information: An Arabic report about supernova SN 1006 by Ibn Sina (Avicenna) arXiv:1604.03798 [astro-ph.SR] arxiv.org/abs/1604.03798v1AbstractWe present here an Arabic report about supernova 1006 (SN 1006) written by the famous Arabic scholar Ibn Sina (Lat. Avicenna, AD 980-1037), which was not discussed in astronomical literature before. The short observational report about a new star is part of Ibn Sina’s book called al-Shifa’, a work about philosophy including physics, astronomy, and meteorology. We present the Arabic text and our English translation. After a detailed discussion of the dating of the observation, we show that the text specifies that the transient celestial object was stationary and/or tail-less (“a star among the stars”), that it “remained for close to three months getting fainter and fainter until it disappeared”, that it “threw out sparks”, i.e. it was scintillating and very bright, and that the color changed with time. The information content is consistent with the other Arabic and non-Arabic reports about SN 1006. Hence, it is quite clear that Ibn Sina refers to SN 1006 in his report, given as an example for transient celestial objects in a discussion of Aristotle’s “Meteorology”. Given the wording and the description, e.g. for the color evolution, this report is independent from other reports known so far.
Around 500 graphic artists and painters Sunday expressed their thoughts in the form of graffiti and paintings on a kilometre-long wall on Delhi University’s north campus.Delhi Wallbook brought together professional and budding artists on the same platform to create the wall art under the theme ‘Design the Change’.The event was inaugurated by Delhi University Vice Chancellor Dinesh Singh. The art enthusiasts included students from various colleges and institutes, professional freelance painters and school teachers. Also Read – ‘Playing Jojo was emotionally exhausting’‘Delhi has the maximum number of unkempt walls that could be used as a readymade surface for artists to come together and showcase their skills, and create an expression for a better tomorrow,’ said Sunil Kutty Menon, founder of the wallbook.‘The wallbook event will soon be made an annual event and will further move to Bangalore, Ahmedabad, Pune and Chennai,’ said Menon.Participants were provided with basic colours to paint and were allocated a section of wall. Artists participated individually or in groups.
Love experimenting with food? Head over to Hyatt Regency this week to get a taste of some authentic Turkish, Lebanese and Jordanian food at the Arabesque Flavours at Cafe, the 24-hour coffee shop of the hotel. Prepared by Chef Ali Alhaj, Chef De Cuisine all the way from Park Hyatt Dubai, indulge yourself in some authentic Hummus, Motabel, Muhamarra, Taboulleh, Fattoush, Baba Ghanoush, Kibdat Dajaj (chicken liver with lemon and garlic), Fitter Moutafa (mushroom with coriander, garlic and lemon juice), Mouajanats (dough stuffed with cheese, meat and spinach), Kabab Halabi (lamb minced with walnut and parsley) a variety of soups including a lentil soup, the Moroccan harera soup and the Chicken vermicelli soup. Also Read – ‘Playing Jojo was emotionally exhausting’Currently chef de cuisine at Café Arabesque, Park Hyatt Dubai, Chef Ali’s passion for cooking started when he was 14, when his father opened a small restaurant in their home town of Hama, Syria, serving traditional Syrian cuisine. His favourite cuisine to cook is Syrian-style Arabic cuisine and next comes Italian, as he says that the flavours and ingredients in Italian food are very similar to the ones he has grown up with. We tried the Hommus, moutabel, Tabouleh, Fattush, mohamara, Beetroot salad, okra salad, mushroom salad, harra Beirut, baba ghanug and the Moroccan harera soup for starters and moved to green peas rice, lamb kabab halabi, fish fillet with lemon garlic sauce, Jordanian chicken mousakhan, Patata harra and Mahashi wine leaves. Each dish was as authentic as it came and we assure that you will be going back for more. The festival is on till 30 August and you can head over for lunch (12:00 Noon to 2:30 pm) or dinner (7:00pm to 11:30pm) and the Arabesque buffet comes to you at Rs 2,000 per person (without taxes and alcohol).
This event seeks to provide a platform for an exhibition of the skill sets and adaptability of these special students in certain sections of the hospitality industry. The event will take place in front of a very distinguished audience, consisting of the general managers and other apex authorities of more than 25 five star luxury hotels of Delhi. The purpose of this exercise is to showcase that these students from the Noida Deaf Society are more than capable of self sustenance and fully functional careers with proper training modules in the hotels which are led by these general managers. Also Read – ‘Playing Jojo was emotionally exhausting’This event will serve to be the cornerstone in the integration of the differently abled in the hospitality industry as highly industrious, contributing members of the workforce.Shangri-La’s – Eros Hotel, New Delhi, has been working with NDS for quite a fruitful while now and has been hiring ten students from every batch who are trained in hospitality divisions such as concierge, laundry, housekeeping and security, before they commence their internship at the hotel. When: 29 SeptemberWhere: The Ballroom, Shangri-La’s – Eros Hotel
Despite those policies, the Japanese economy slipped into a recession last quarter after a sales tax increase in April crushed consumer and business spending. That forced Abe to delay the second hike planned for October next year until April 2017. Abe said on Tuesday he will dissolve parliament on Friday. He wants an election as soon as possible, which would be mid-December, to seek public approval for his tax decision and for his overall ‘Abenomics’ policies of extreme monetary easing, heavy government spending and economic reforms. The government and the Bank of Japan have pumped hundreds of billions of dollars into the economy in the two years since Abe was elected. Also Read – Pro-Govt supporters rally as Hong Kong’s divisions deepen‘I realize this election will be tough, but I need to hear the voice of the people,’’ Abe told a news conference. ‘I will step down if we fail to keep our majority because that would mean our Abenomics is rejected.’ The delay in raising the sales tax to 10 percent from the current 8 percent will slow Japan’s work on repairing its tattered public finances. But Abe said the risk to the world’s third-largest economy was a bigger threat. Fresh elections may seem a puzzling decision given Abe is only half way through his term and the latest economic news is dismal. However Abe’s ruling Liberal Democrats have a solid majority and hope to further consolidate their power at a time when opposition parties are weak and in disarray. Also Read – Pak Army ‘fully prepared’ to face any challenge: Army spokesmanAbe described his strategies as the ‘only path’’ for Japan to escape its economic malaise. ‘Some people say Abenomics has failed or it’s not performing well,’’ he said. ‘But then what should we be doing?’’ Japan has bubbled with speculation of an early election since early this month. The Liberal Democrats have been coaching freshman lawmakers on campaign strategies and opposition parties have rushed to discuss possible new alliances, as campaign posters went up in Tokyo neighborhoods. Abe got a rare second term as prime minister after stepping down just a year into his rocky first term in office in 2006-2007. His support ratings started out high as share prices surged in early 2013. But they have fallen recently. Parliament got bogged down in squabbles over campaign finance scandals that led to resignations of two of his cabinet ministers within weeks of an early September reshuffle. By dissolving parliament for an election Abe can clear the slate and once again reshuffle his cabinet, said Michael Cucek, a Tokyo-based analyst and fellow at Temple University Japan. Abe pointed to progress in terms of an improved job market and modest increases in wages for some workers. ‘We’ve kept moving ahead. We must not stop now,’’ he said. Opposition party leaders, already resigned to Abe’s plan, said they could not oppose the delay in the sales tax increase, given the feeble state of the economy. At over a quadrillion yen ($8.6 trillion), Japan’s public debt is the biggest among developed nations and over twice the size of the economy. But since most of the debt is held by the Bank of Japan and other Japanese financial institutions, it is considered relatively stable.
Well, its 14th February and the colour red is flaming in every corner of the city. It isn’t a communist uprising – worry not. It is just Valentine’s Day.If teddy bears, chocolates and over-priced flowers were not enough – the airlines, which are facing financial deficits, now we have special discounts for couples who can fly in to celebrate the day together. Distance is only a number when it comes to love and money is only an object.But it does make us wonder – with sky-high shopping bills, a mad rush for advance bookings in cafes and restaurants and the constant fear of probably not being able to please your significant other – are we celebrating love or are we ruining it? Also Read – ‘Playing Jojo was emotionally exhausting’Psychiatrists says that high expectations and comparison with other couples, especially on over-hyped days like Valentine’s Day, may actually ruin relationships rather than making the couple come closer together.Let’s break it down – if you expect your partner to sweep you off your feet with an overtly romantic gesture coming Saturday morning and they don’t, we can well expect hell to break loose. Alternately if you are aware of your partner’s high expectations – the onus (and pressure) is on you to deliver. Also Read – Leslie doing new comedy special with Netflix“Dumping faulty (and very high) expectations on our partners can make things bad. Expectations arise to conform to things happening around us. The need to be accepted and treated at par by others. But such high expectations borne out of social obligations are not healthy for relationships,” says Samir Parikh, Chief of Department of Mental Health and Behavioral Sciences at a city hospital here. Besides the infamous dose of ‘high expectations’ which mathematically equates to mounting expenses, brings in another enemy of love – jealousy. Witnessing all the happy couples with red roses or expensive, fancy gifts – anyone and everyone could feel very left out and very green. Especially on this day of love.“Jealousy is dangerous but whether to be jealous or not, depends upon the people. Couples need to keep in mind all that they have invested in their relationship. Rather than looking what others are doing (or buying) and comparing your partner with others, do what fits your relationship,” suggests Parikh.Do the roots of these expectations and jealousies run deep? Blame the movie industry for it. The larger-than-life celebrations on celluloid have actually ruined the idea of love for couples. It is considered to be more romantic to try and ape what you saw on TV than want to be original and honest about what you feel.Want to remain sane and enjoy what your relationship really has to offer? Get some fried chicken, slip in to those comfortable pajamas and watch a movie with your significant other. Have some real fun on Valentine’s Day! However, if you are still pretty convinced that you can handle the pressure and live up to expectations (or at least try to) – we have some recipes and some pretty neat dinner/lunch packages and a chance to win your girl (or yourself) a ‘best friend’ and make this Valentine’s Day all the more special. Read on to make your plans but at the end of it all – make sure you have fun.
Kolkata: Negating the effects of Bhangar issue over setting up of the power-grid sub-station, the state government’s special drive has almost ensured completion of the laying of 41.2 km overhead electric wires from Subhasgram to Sonakhali, that will benefit around 2.5 lakh residents of North and South 24-Parganas.The special drive was taken up following a direction of Chief Minister Mamata Banerjee in March and the project that had been pending for the past two and half years has been executed in a time period of just three months. Also Read – Speeding Jaguar crashes into Merc, 2 B’deshi bystanders killedAccording to a senior official of the state government, the project is a crucial one as its completion was essential for better power supply to vast areas in both North and South 24-Parganas. But for certain reasons, it had not become possible to carry out the work in full swing.It has only become possible after gaining confidence of the people in the area and the administration, with help of the district level officials, made around 400 people understand in the past three months that laying of the overhead wires is the “need of the time” to ensure that people can lead a better life in different parts of the two districts. Also Read – Naihati: 10 councillors return to TMC from BJPReaching out to the people to make them understand about the benefits of the project was a crucial part of the special drive, besides the work of setting up the towers and laying of wires.There was a need to set up 166 towers to lay the 41.2 km long overhead wires from Subhasgram to Sonakhali. Installation of 164 towers was completed six days ago and the work to set up the last tower had started on July 4.Now, the project is nearing completion and the laying of the overhead wires is also almost complete. It may be mentioned that out of the 41.2 km, the laying of 19 km overhead wires has been completed in the past three months. This comes when the work had been pending for the past two and a half years.It may be mentioned that the laying of wires covering the last stretch of 7.2 km was carried out in full swing and the project is nearing completion.With completion of the project, there will be supply of power from Sonakhali 132/33 KV sub-station to 33 KV sub-station at Jibantala, Gosaba, Dighirpar in South 24-Parganas. At the same time, there will also be transmission of power to 33 KV sub-station at Sarberia and Jaliakhali in North 24-Parganas. It will benefit 2.5 lakh people.