Queens University students hack Microsoft Kinect to make a 360degree display

first_img © 2010 PhysOrg.com 3D, 360-degree fog display shown off (w/ video) Explore further Citation: Queens University students hack Microsoft Kinect to make a 360-degree display (2011, May 19) retrieved 18 August 2019 from https://phys.org/news/2011-05-queens-university-students-hack-microsoft.html (PhysOrg.com) — It seems like lately everyone is playing around with the Microsoft Kinect to make something different than the in the box configuration. This time the modifications are coming students at Queens University. They have combined a pair of the Kinect sensors with a hacked 3D HD projector and a hemispherical mirror mounted inside of an acrylic sphere to make a pseudo holographic display. 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 project, aptly dubbed Project Snowglobe, is capable of showing a 360-degree view of a digital object. While at first that may sound really cool, the display system is limited to a single user at the present moment. The system cannot project a truly 3D object at the moment. It simply tracks the movement of the viewer and rotates the image so that it is in sync with their position. Don’t expect to see this bit of creative hacking on sale any time in the near future; no plans have been made at this time.last_img read more

Optical magnetic microscope for highresolution widefield cell imaging

first_img(Phys.org) —Nano-sized crystals of magnetic material can be found in a wide variety of organisms. Among the most studied are magnetotactic bacteria, which can orient and navigate using biosynthesized magnetosomes. These organelles are made from iron oxide or iron sulphide particles and may eventually have many therapeutic applications. When used in conjunction with new MRI-based methods, they can potentially be used as contrast agents or magnetic labels in imaging, or for drug delivery and local hyperthermic heating in treatment. A better understanding of how these magnetosomes are biomineralized, and how the three-dimensional fields that originate from them are structured is essential to achieve these goals. A new report this week in Nature describes an optical magnetic imaging technique that can be used to map magnetic field variations on the nanoscale. The author’s wide-field microscopy technique allows parallel optical and magnetic imaging of many individual cells across a field of 100 microns or more. Magnetotactic bacterium. Credit: Imperial College London The general principles of the magnetic imaging technique used here have been known for some time. The basic concept is to detect changes in the quantum spin states of crystallographic defects, known as nitrogen-vacancy centers, within a diamond chip. The new Nature study is the first to do this for a living creature. The rig put together by the authors is probably one of the more complicated sets of probing devices you are likely ever to see. The bacteria sit above the diamond surface, where the fields from the magnetosomes affect characteristic signals (electron spin resonances) of the nitrogen-vacancy centers. An optical beam is used to readout those signals, and the vector components in each direction of the magnetic field can later be reconstructed.The strain of bacteria used was Magnetospirillum magneticum AMB-1, which forms cubo-octahedral magnetic particles roughly 50 nm in diameter. The fields produced by these bacteria could be imaged to a resolution of 400nm. The optical images of the field distributions were collected using a sCMOS camera across a field of view 100um by 30um. Bright field images were concurrently acquired using 660nm red LED back-illumination to link cell features with the magnetic patterns. Fluorescence excitation to asses bacterial viability was done through the microscope objective using 470nm illumination. In addition to the geometrical tangle of all the required optical elements, the setup also needed to incorporate a permanent magnetic field for proper operation. This which applied by a nearby permanent magnet. The final element necessary was the appropriate application of microwave energy. The microwaves were applied to the diamond surface from an overlying wire connected to the output of a synthesizer.Beyond just taking snapshots of field distributions, the setup also has the potential for dynamic imaging of field changes across the development cycle of the magnetosome crystals. Other magnetic imaging techniques, like SQUID and electron holography, might eventually be similarly adapted to yield even higher spatial resolutions then the techniques used here. Explore further Journal information: Nature © 2013 Phys.orgcenter_img More information: Optical magnetic imaging of living cells, Nature 496, 486–489 (25 April 2013) doi:10.1038/nature12072AbstractMagnetic imaging is a powerful tool for probing biological and physical systems. However, existing techniques either have poor spatial resolution compared to optical microscopy and are hence not generally applicable to imaging of sub-cellular structure (for example, magnetic resonance imaging), or entail operating conditions that preclude application to living biological samples while providing submicrometre resolution (for example, scanning superconducting quantum interference device microscopy, electron holography and magnetic resonance force microscopy). Here we demonstrate magnetic imaging of living cells (magnetotactic bacteria) under ambient laboratory conditions and with sub-cellular spatial resolution (400 nanometres), using an optically detected magnetic field imaging array consisting of a nanometre-scale layer of nitrogen–vacancy colour centres implanted at the surface of a diamond chip. With the bacteria placed on the diamond surface, we optically probe the nitrogen–vacancy quantum spin states and rapidly reconstruct images of the vector components of the magnetic field created by chains of magnetic nanoparticles (magnetosomes) produced in the bacteria. We also spatially correlate these magnetic field maps with optical images acquired in the same apparatus. Wide-field microscopy allows parallel optical and magnetic imaging of multiple cells in a population with submicrometre resolution and a field of view in excess of 100 micrometres. Scanning electron microscope images of the bacteria confirm that the correlated optical and magnetic images can be used to locate and characterize the magnetosomes in each bacterium. Our results provide a new capability for imaging bio-magnetic structures in living cells under ambient conditions with high spatial resolution, and will enable the mapping of a wide range of magnetic signals within cells and cellular networks.Commentary: Magnetic bacteria on a diamond plate, Mihály Pósfai & Rafal E. Dunin-Borkowski, Nature 496, 442–443 (25 April 2013) doi:10.1038/496442a New magnetic imaging technique heralds advance in spintronics Citation: Optical magnetic microscope for high-resolution, wide-field cell imaging (2013, April 25) retrieved 18 August 2019 from https://phys.org/news/2013-04-optical-magnetic-microscope-high-resolution-wide-field.html This document is subject to copyright. Apart from any fair dealing for the purpose of private study or research, no part may be reproduced without the written permission. The content is provided for information purposes only.last_img read more

Straight up SpaceXs Grasshopper rocket gains height and precision w Video

first_img SpaceX Grasshopper takes a leap into a ‘ring of fire’ Explore further The company was founded in 2002 by Elon Musk. Test facilities are in Texas. The test also drew praise for precision in landing. The precision is attributed to new navigation sensors that measure distance between the ground and the vessel. “Most rockets are equipped with sensors to determine position, but these sensors are generally not accurate enough to accomplish the type of precision landing necessary with Grasshopper,” according to the statement released with the video.The Grasshopper is a 10-story Vertical Takeoff Vertical Landing (VTVL) vehicle, which SpaceX was directly controlling based on the sensor readings. “Grasshopper consists of a Falcon 9 rocket parts and a Merlin engine, four steel and aluminum landing legs with hydraulic dampers, and a steel support structure,” according to the video statement. © 2013 Phys.org (Phys.org) —California-based spacecraft company SpaceX has released a video of the June 14 test of its Grasshopper rocket. The company said it soared over 1,000 feet during its latest trial run in June and it made a remarkably precise landing. In detail, the rocket flew 325 m, or 1066 feet, after liftoff in McGregor Texas, a rocket development facility. This breaks its previous record height of 840 feet. Grasshopper vehicle on 12 September 2012. Credit: Steve Jurvetson/Wikipedia. Citation: Straight up: SpaceX’s Grasshopper rocket gains height and precision (w/ Video) (2013, July 8) retrieved 18 August 2019 from https://phys.org/news/2013-07-straight-spacex-grasshopper-rocket-gains.html This document is subject to copyright. Apart from any fair dealing for the purpose of private study or research, no part may be reproduced without the written permission. The content is provided for information purposes only.last_img read more

Female glowworms with brighter lights found to attract more mates and to

first_img(Phys.org)—A small team of researchers affiliated with the University of Oulu and the University of Helsinki, both in Finland, has found that female glowworms that have a brighter light tend to attract more mates and to produce more offspring. In their paper published in the journal Biology Letters, the team describes their two-pronged research project and what they learned in studying the common beetle. Citation: Female glowworms with brighter lights found to attract more mates and to produce more offspring (2015, October 21) retrieved 18 August 2019 from https://phys.org/news/2015-10-female-glowworms-brighter-offspring.html © 2015 Phys.org 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. Journal information: Biology Letters A female common glowworm (Lampyris noctiluca) in green grass. Credit: Timo Newton-Syms/Wikipediacenter_img Study shows starving mantis females attract more males Glowworms, also known as lightening bugs, are very well known in many parts of the world—masses of them at night giving off their eerie green light can sometimes resemble moving stars. One particular type of glowworm, Lampyris noctiluca lives in parts of Tvärminne research station and Nurmijärvi, both in Finland, which naturally led the researchers to focus on them. They note that females of the species cannot fly or eat, they simply hang around glowing until a male drops by to mate with them—afterwards, they stop glowing, lay eggs and then die. What the team wanted to know was, does the amount of glow given off by a female have any real impact on her attractiveness to males, or the number of offspring she would have. If so, it would offer a rare example of female ornamentation for attraction of males, rather than the usual other way around.To find out, the researchers set up two experiments, the first involved capturing a number of females that were believed to be glowing for the first time and bringing them into the lab for scrutiny. In the lab, the researchers replicated outdoor conditions by turning the lights off at night. Each specimen was measured to see how large her lantern was and the number of eggs she laid was counted. Afterwards, each was dissected to count the number of eggs in her ovaries to derive a total possibility of offspring.The second experiment involved setting up artificial females out in a field and then varying the intensity of light generated to see how it impacted the interest of males.The team finished by comparing attraction rates of males to light intensity with lantern size in females and the number of potential offspring produced. They found that those females with larger lanterns, which allowed them to emit more light, attracted many more mates and also produced more offspring—those with the largest lanterns produced up to four times as many eggs as the smallest. More information: I’m sexy and I glow it: female ornamentation in a nocturnal capital breeder, Biology Letters, Published 21 October 2015.DOI: 10.1098/rsbl.2015.0599 AbstractIn many species, males rely on sexual ornaments to attract females. Females, by contrast, rarely produce ornaments. The glow-worm (Lampyris noctiluca) is an exception where wingless females glow to attract males that fly in search of females. However, little is known about the factors that promote the evolution of female ornaments in a sexual selection context. Here, we investigated if the female ornament of the glow-worm is a signal of fecundity used in male mate choice. In support of this, we found brightness to correlate with female fecundity, and males to prefer brighter dummy females. Thus, the glow emitted by females is a reliable sexual signal of female fecundity. It is likely that male preference for the fecundity-indicating ornament has evolved because of large variation among females in fecundity, and because nocturnal males cannot directly assess female size and fecundity. These results indicate that female ornamentation may evolve in capital breeders (i.e. those in which stored resources are invested in reproduction) when females vary significantly in fecundity and this variation cannot be assessed directly by males. Explore furtherlast_img read more

Watches are personal statements

first_imgAntoine Simonin has over 50 years experience in the watchmaking profession and has held leading positions in after-sales services as well as in the management of watchmaking schools. Since 1976, Simonin has been the Director of WOSTEP – (Watchmakers of Switzerland Training and Educational Program) in Neuchâtel, Switzerland. He was in the Capital as a part of the jury of the Watch World Awards. We caught up with him for a quick interview.Tell us a little about yourself. Where did you start from? Also Read – ‘Playing Jojo was emotionally exhausting’I started my career at 16 years age in the watchmaking school in Bienne- please find attached profile for further detailsHow did you come about to be interested in watches and watchmaking?I like working with my fingers and mechanical items. I love miniaturization, cleaning and watchmaking has all this combination. The history of watchmaking is part of the general history of mankind.What is your philosphy when you make a watch?The only time I made 2 watches (by hand) was in the watchmaking school. This is the best and ultimate action to learn this wonderful profession. My professional life has been mostly repairing, restoring and teaching watchmaking (giving my experience and knowledge to watchmakers all over the world). Also Read – Leslie doing new comedy special with NetflixWhat’s your take on the utility of a watch and the luxury of one?Today a watch is a product of emotion and “status”, we do not need anymore a watch as it was necessary in the 1900-1950 as you find the time everywhere (computer, railways clocks and handies etc.) It is a sign of the personality of the holders having either a Rolex or a Swatch! Which are your favourite brands?All the brands that are of high quality and not necessary in gold or platinum (precious metal)  What watch do you yourself wear?I have several brands as Omega, Longines, Gerard-Perregaux and my first is a minute repeater(wrist) from around 1890 that has been restored and recased without any brand, signed A. Simonin.Why should a person buy a watch that costs thousands rather than ones that costs hundreds – though ideally both serve the same purpose?This is very personal. There are people that wish to have a timekeeper that is unique, various complication and again shows their personality or status.What do you think is the Indian philosophy behind watches?The Indian philosophy behind watches is first the brand. It must be reliable and be able to bring an after-sale service. Some like shiny things!Which brands do you think work best in India?I think it is Rolex, Omega, Rado and lately Hublot.Tell us about your India experience. How has Delhi treated you? Tell us five things you like and dislike about Delhi?Delhi is a nice city more specific New Delhi, very clean and I had a wonderful experience of visiting historical places. I have a deep respect of one of the world most human person: Mahatma Gandhi. Delhi is very different from Mumbai as you can feel that it is the Capital and has an historical and international touch. I cannot give negative points of Delhi as I have been during my stay with cultivated and wonderful people and this matter of fact is that I’m a positive person in general!last_img read more

Fake doctor arrested from Moore Avenue

first_imgKolkata: The city police have arrested a fake doctor from Moore Avenue on charges of practicing as a doctor without a valid registration.According to police, the accused, Sadhan Goswami has been treating patients since 1995.He started a chamber on the Moor avenue in 2009. Goswami shut down his chamber after many such fake doctors were arrested last year.It was learnt that he re-opened his chamber in March this year.Some locals suspected that there must be something wrong as he disappeared after fake doctors were arrested from various parts of the city . Police came to know about the incident and initiated a probe. Also Read – Rain batters Kolkata, cripples normal lifeThey went to the chamber and received his registration certificate and later sent it to the Medical Council of India (MCI) for verification.The accused registration number was declared false by the MCI.After police became confident that he was a fake doctor, they raided his clinic and interrogated for a while before arresting him finally in this connection.Police arrested the accused on Monday night. They seized several documents from his chamber and are investigating if others are involved in the incident. Also Read – Speeding Jaguar crashes into Mercedes car in Kolkata, 2 pedestrians killedIt may be mentioned that Criminal Investigation Department had started a probe in this regard last year and had arrested many doctors across the state.Many suspected fake doctors closed down their chambers following the incident.Goswami was one of such accused. Police are trying to figure how a fake doctor had been operating a chamber in the city since 1995 without a valid registration.He was remanded to police custody after being taken to a city court on Tuesday. Police have started a detailed probe in this regard.last_img read more

Alapan becomes Additional Chief Secy of MSMET dept

first_imgKolkata: In a major reshuffle in the IAS cadre in Bengal, Alapan Bandyopadhyay has become the Additional Chief Secretary of the Micro, Small and Medium Enterprises and Textiles department.An IAS officer of the 1987 batch, Bandyopadhyay was the Additional Chief Secretary of the Transport department. He became the Additional Chief Secretary of the Micro, Small and Medium Enterprises and Textiles department replacing Rajiva Sinha, who has become the Additional Chief Secretary of the Health and Family Welfare department.It may be mentioned that MSME is one of the thrust areas of the state government and Bengal is one of the leading states in the country in this sector. The Bengal government is taking several steps to sustain the growth in the sector, which is why a senior IAS officer like Bandyopadhyay has been chosen as the Additional Chief Secretary of the department.Bhagwati Prasad Gopalika, who was the Principal Secretary of the Animal Resource Development department, has now become the Principal Secretary of the Transport department. Anil Verma has become the Principal Secretary of the Animal Resource Development department, who was posted as Principal Secretary of the Health and Family Welfare department.Principal Secretary of Panchayat and Rural Development department Ajit Ranjan Bardhan has been given the additional charge of State Mission Director and CEO of State Rural Livelihoods Mission.An IAS officer of the 1990 batch, Subrata Biswas, who was the Principal Secretary of the Gorkhaland Territorial Administration (GTA), has become the Principal Secretary of the Mass Education Extension and Library Services department, replacing Anoop Kumar Agarwal, who has become the Principal Secretary of the Self Help Group and Self Employment department.Meanwhile, Choten Dhend-up Lama, who was secretary of Self Help Group and Self Employment department, has become the Principal Secretary of GTA.last_img read more

NCB seizes 78 kgs of ganja from Bishnupur area in South 24Parganas

first_imgKOLKATA: The zonal team of Narcotics Control Bureau (NCB) seized around 78 kgs of ganja from the motor workshop of one Rehman, a resident of Bishnupur in South 24-Parganas. The incident took place on Friday night. One Saifuddin Sheikh has been arrested from the same area in this connection. The investigators are probing if other persons are involved in the incident.According to the NCB, the source of the seized drug is Odisha and these narcotic substances were coming to Kolkata. Also Read – Rain batters Kolkata, cripples normal lifeA senior official of the NCB said a detailed probe has been initiated in this regard to identify the other accused if any. The arrested person has also been interrogated. The seized drugs and the arrested person will be produced before a court in Alipore on Sunday. The officials are trying to know the entire modus-operandi. The investigators are not ruling out the possibilities of other individuals being involved in the incident.last_img read more

2019 LS polls TMC BJP prepare for cyber slugfest

first_imgKolkata: With an eye on the 2019 Lok Sabha polls, the ruling Trinamool Congress (TMC) and the opposition BJP in West Bengal have decided to revamp their IT cells and enhance social media presence to take on each other in virtual space. Both the parties have been engaged in a bitter political war for the past few years and are now planning to extend it to the social media turf. West Bengal has 42 Lok Sabha seats of which the TMC holds 34 and the BJP just two. Also Read – Rain batters Kolkata, cripples normal life BJP chief Amit Shah has set a target of winning over 22 seats and the party hopes that social media will play an important role in its quest. The TMC, for the past few months, has been strengthening the party’s digital cell under the stewardship of Abhishek Banerjee, the party’s youth wing president and nephew of Chief Minister Mamata Banerjee. TMC’s national spokesperson Derek O’ Brien and Abhishek are quite active on social media platforms like Twitter and Facebook and are at the forefront in taking on the BJP in the digital space. Also Read – Speeding Jaguar crashes into Mercedes car in Kolkata, 2 pedestrians killed The party is all set to organize a Digital Conclave on September 10 at Nazrul Mancha, where Abhishek will address its IT cell members, ministers and youth workers. “During this conclave, special instructions will be given to ministers to be more active on social media such as Twitter and Facebook to directly interact with the masses. Most of the BJP ministers are active on social media but in comparison only a few of our ministers and party leaders are active on social media. This has to increase,” said a senior TMC leader. The party has decided to train over 40,000 youths on the usage of social media to reach out to the masses across the 42 Lok Sabha constituencies of the state. The party has set a target of creating 10,000 WhatsApp groups with 256 members in each of them to spread awareness on the developmental work of the state government and “anti-people” policies of the BJP government at the Centre. “Till now, we have been able to create 3,000 WhatsApp groups and for each Lok Sabha constituency, we have created a separate media page. We have 12-14 people monitoring media content, fake news and trolls from district level to booth level, said a member of TMC’s Social Media IT cell. Colonel (retd) Dipatanshu Chowdhury, who is a joint convenor of TMC’s Media cell, told PTI that the party is not only looking into the usage of Twitter, Facebook and WhatsApp but also other platforms such as Messenger, microblogging sites, e-mails, Pinterest and Instagram. “Social media is going to play a very vital role in the next Lok Sabha polls. We are looking at the use of digital spectrum so that we can reach out to our target audience, especially youths and first time voters,” he said. Mamata Banerjee herself, during the TMC students’ wing programme held recently, had asked the party’s students and youth activists to become more active on social media to counter the BJP. With TMC gunning for an all-out cyber war, the West Bengal BJP unit too is gearing up to retaliate. BJP chief Shah, during his visit in June this year, has spelt out the strategy to reach out to the masses, both physically and also via social media. Shah had asked party workers to use social media as a tool to combat the TMC government in the state and propagate the pro-people policies of the Modi government. He had also stressed on using social media to fight against the “rumours” spread by opposition parties and propagate developmental policies of the Narendra Modi government. Amit Malviya, national in charge of BJP’s IT, Website and Social Media Management cell told PTI that BJP will leverage social media effectively to highlight the “colossal misgovernance” and “appeasement politics” of Mamata Banerjee in West Bengal. “The party has a trained cadre base with presence down to the booth level. BJP also has a huge network of volunteers, which is aligned with the BJP’s ideology and sees a better future for themselves and the state under the leadership of Prime Minister Narendra Modi,” Malviya said. On social media platforms, the party plans to highlight the “failures” of the TMC government at the state level and the pro people policies of the BJP. Speeches and political messages of party president Shah, Prime Minister Narendra Modi and state BJP president and other senior leaders will also be carried on the social media platforms and translated to Bengali so that it can be received by a bigger audience. State BJP general secretary Sayantan Basu said the party is in the process of creating Facebook pages and WhatsApp groups at every booth of the state. The purpose of these groups will not only be to highlight various state level issues but also create a public opinion on local issues through the use of social media. “The work of creating Facebook page and whatsapp groups have already started. We hope to finish the job soon,” Basu told PTI. The state BJP unit is also on the lookout for new office space for setting up the revamped IT cell. In districts too, the BJP is planning to have separate offices for its social media and IT cell.last_img read more

KVIC launches single umbrella panIndia emarketing platform

first_imgNew Delhi:In As a fusion of ‘Digital India’ and ‘Made in India’, the Khadi and Village Industries Commission (KVIC), launched its first in-house single-umbrella e-marketing system – Khadi Institution Management and Information System (KIMIS), recently.The system can be accessed from anywhere in pan-India for the sale and purchase of Khadi and Village Industries products.The system was inaugurated by Vinai Kumar Saxena, Chairman, KVIC. He said that since KVIC firmly believes in transparency in all of its aspects, it was need of the hour to develop some in-house single umbrella billing software for sale and purchase that could be used to monitor round-the-clock from any remotest place. Also Read – Add new books to your shelf”It gives me immense pleasure and satisfaction that KVIC IT team has developed such a full-proof software in-house, which might have cost millions of rupees if bought from any third party. This in-house software will not only give a real-time data of sales, it will also give the updated status of stocks of our bhawans and godowns, subsequently smoothing the planning procedure, along with controlling the inventory of KVIC,” he added.Giving more insights about the system and its functioning, he told, “Not only 480 Khadi institutions and our showrooms are linked with this billing software but it is also very useful in raising demand and supply of goods in high demand, from institutions located at faraway places in seconds. Even I am aware of the sale at far-off places in seconds. It will also nullify the chances of any dearth or burden of any bhawan.”Saxena said, “Since this system is at the nascent stage, few hiccups might arise sooner or later.” “In the earlier system, our staff had to face a lot of problems in deletion or updating of bills, but now with this new software, it is now a game of seconds, with an eagle’s eye of the server at our head office. We will provide proper training to all our staff so that they can be accustomed to the new software soon,” he added.last_img read more