August 2019

Sidekicks lost data gone for good

first_img Microsoft Announces Windows Mobile 6.5 (PhysOrg.com) — Sidekick users have been without some of their services for days, and have just been told by the company, T-Mobile, that for some users their data may be lost forever due to a server error at Microsoft subsidiary, Danger. Citation: Sidekick’s lost data gone for good (2009, October 12) retrieved 18 August 2019 from https://phys.org/news/2009-10-sidekick-lost-good.html T-Mobile has published an apology to affected users for what is turning out to be one of the most spectacular failures in cloud computing. The massive data loss also suggests entrusting personal data to the cloud may not be as safe as users have been led to believe. The loss of services and data was caused by a disruption to services, but details are sketchy.The problems began last week with a massive outage at Danger. Many Sidekick users lost access to their key data, because almost all the data is stored in the cloud, with no copy on the device itself. On Saturday, Microsoft admitted that any data it had not yet recovered is almost certainly permanently lost.T-Mobile has offered to compensate affected users with a free month of services, but neither T-Mobile, nor Microsoft have revealed how many users have been affected. Users who have lost their data would need to rebuild it themselves, but many have not backed up their data since they believed it was safe. Data affected includes contact lists, calendar details, personal information and photographs.T-Mobile is warning users not to power off their Sidekick device, to reset it, or to remove the battery or allow the battery to go flat. If they do, they will lose any remaining personal data they currently have in their device, since the data that was backed up on the Danger servers has been lost.Another update from T-Mobile and Microsoft on the current state of the repairs is expected to be issued today.© 2009 PhysOrg.comcenter_img Explore further This document is subject to copyright. Apart from any fair dealing for the purpose of private study or research, no part may be reproduced without the written permission. The content is provided for information purposes only.last_img read more

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The Honda 3RC Designed For The NOW

first_img Honda Motors has always imagined the future in its automobile designs and technology. But this year, Honda’s imagination has come up with a design, a technology, and an extremely cool-looking, practical vehicle that millions of folks would buy right now, if given the opportunity. Combining Honda’s engineering with European design (Italian, no less) and you’ve got a winner in the 3R-C.Unfortunately, Honda’s 3R-C is a concept car… a three-wheeled concept car, a trike… and most auto bloggers in the know agree that it will never be built. If that is so, it’s really a pity. Citation: The Honda 3R-C: Designed For The NOW (2010, March 1) retrieved 18 August 2019 from https://phys.org/news/2010-03-honda-3r-c.html Honda Introduces All-New Insight Dedicated Hybrid Concept Vehicle at Paris Motor Show Honda 3R-C Concept (Image: Honda) The 3R-C is an all electric trike with its lithium battery stored low under the chassis for vehicle stability. The thick door-like sides are high, offering a nice separation between the driver and the front end of another vehicle, as well as a shield from wind and water. And if frontal protection from the elements is needed, the 3R-C’s canopy, which covers the vehicle when not in use, becomes a windshield.And, unlike your friendly neighbor’s motorcycle, the 3R-C doesn’t make noise. When you want to buzz to the store and back, no one really has to know your comings and goings. Oh yes, you also get more than a basket for your groceries. The Honda trike has a lockable trunk in front of the driver’s seat, which is more than handy when you need to make multiple shopping stops. And, of course, you can lock up the driver’s seating compartment with the canopy.In U.S. cities with plenty of public transportation available and high-occupancy vehicle (HOV) lanes that offer speed inducement from the suburbs to the city, as of the last published census report, still 77 percent of commuters drive to work alone. In the states, HOV lanes have been around since the 1980’s and usership is still embarrassingly low. 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. Honda 3R-C Concept (Image: Honda)center_img Explore further By 2050, it is estimated that 70 percent of the world’s population will be living in urban areas. In industrialized countries, urban areas already account for 74 percent of their total populations. Can you imagine what traffic will be like in cities like Tokyo, London, and New York in 2050? © 2010 PhysOrg.com With populations throughout the world moving into urban areas, does anyone doubt there would be a market for the Honda 3R-C, especially in the industrialized countries where everyone wants their independence. Why not get the Honda 3R-C on the assembly line and into dealerships right now? More information: Asia Corporate News Network, Green Car Advisor, Autoblog Greenlast_img read more

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first_img Journal information: Physical Review Letters © 2012 Phys.org More information: Unconventional Josephson Effect in Hybrid Superconductor-Topological Insulator Devices, Phys. Rev. Lett. 109, 056803 (2012) DOI:10.1103/PhysRevLett.109.056803AbstractWe report on transport properties of Josephson junctions in hybrid superconducting-topological insulator devices, which show two striking departures from the common Josephson junction behavior: a characteristic energy that scales inversely with the width of the junction, and a low characteristic magnetic field for suppressing supercurrent. To explain these effects, we propose a phenomenological model which expands on the existing theory for topological insulator Josephson junctions.Physics Viewpoint: An Extraordinary Josephson Junction Citation: Researchers find unusual behavior in Josephson junction superconductor-topological insulator devices (2012, August 1) retrieved 18 August 2019 from https://phys.org/news/2012-08-unusual-behavior-josephson-junction-superconductor-topological.html Explore further (Phys.org) — Researchers at Stanford have been investigating the special properties of a Josephson junction when constructed as hybrid superconducting-topological insulator devices and have found what appears to be some unconventional behavior. In their paper published in Physical Review Letters, they describe how in applying a superconductor-topological insulator to a Josephson junction, the diffraction that occurs appears to differ from theoretical theories. 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. Long predicted but never observed: A new kind of quantum junction A Josephson junction is where a device is made that allows, theoretically, for an infinite electrical current to flow. This should be possible because superconductors, by their very name, conduct electricity so well that no energy is lost when electrons pass through them. To construct a Josephson junction, researchers couple two superconductors together with a weak link between them. What is interesting about the construction of such a device though, is when the two superconductors have different phase shifting properties which cause a phase shift in the electrons as they pass through. What’s more if a magnetic field is applied, than that can cause a phase shift as well.In this new research, the team applied a superconducting form of aluminum on top of a bit of bismuth selenide, which is a topological insulator. To create a Josephson junction, they left a little gap between the two and then applied a magnetic field and a small amount of current.In measuring the results, they were surprised to find that the diffraction that occurred due to the phase shift didn’t correspond to the conventional Fraunhofer pattern as expected. Instead they found that the valleys were higher, which they suggest could have been due to the size area of the junction being smaller. But they also found that the shape of the curve itself was different. Together the unconventional results suggest that something else is at work in the junction and the team suggests that it might just be due to the emergence of particles that show a remarkable similarity to Majorana fermions – charge neutral particles (fermions) that are their own antiparticles.This new work goes a long way towards proving that Majorana fermions really can be created using superconductors, thus proving the theories true, and if that is the case, then actual devices should be able to be built that create and manipulate them at will, opening the door to all manner of applications that until now have existed only in science fiction stories.last_img read more

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Dissecting the brains primary developmental engine

first_img(Phys.org) —Last month, researchers reported the creation of the first primitive brain-like structures made from human stem cells. To create the complex morphology of these cerebral organoids, cells within a proliferating neuroectodermal layer were converted into so-called radial glial precursors (RGPs), which then rough out the basic floor plan of the cerebrum. As seen in the image above, the migrating and replicating RPGs span the thickness of the telencephalon in a normally developing brain, and provide a scaffolding for later arriving cells to subsequently migrate on themselves. A new paper published in Cell describes how the division of RPGs is tightly controlled by the location of the nucleus as it is motored about between the poles of the extended cell. The authors expand upon earlier work detailing the precise cytoskeletal couplers which power these translocations in specific directions, and ultimately piece together how these motor proteins, specifically dynein, are harnessed by nuclear pore complexes. Once this motor-nuclear mating occurs, migration in the apical direction (in this context, apical is towards the ventricle and basal is towards the surface) is initiated followed by subsequent entry into mitosis. Citation: Dissecting the brain’s primary developmental engine (2013, September 18) retrieved 18 August 2019 from https://phys.org/news/2013-09-brain-primary-developmental.html More information: Dynein Recruitment to Nuclear Pores Activates Apical Nuclear Migration and Mitotic Entry in Brain Progenitor Cells, Cell, Volume 154, Issue 6, 1300-1313, 12 September 2013. DOI: 10.1016/j.cell.2013.08.024 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 © 2013 Phys.orgcenter_img Journal information: Cell While the nucleus undergoes dramatic restructuring throughout the cell cycle, the individual pore complexes themselves are among the longest-lived protein structures in the cell. Together with a few other kinds of proteins, like the collagens, or specific histones, they can maintain their structure over the lifetime of the organism itself. In their latest research, the researchers were able to identify a number of proteins that inhibited the recruitment of dynein to the pore complex using a technique known as RNA interference (RNAi). The particular form of the technique they employed here made use of more stable RNA known as shRNA, for short hairpin. By injecting these inhibitors directly in utero, at embryonic day 16 rats, they then looked at the effects on RGP cells in living slices of tissue from embryonic day 20.The researchers found that the interfering RNAs arrested the cells in the G2 phase of the cycle. By rebuilding and adding supplementary dynein proteins, and targeting them to the nuclear pore, this effect could be rescued. The specially modified dynein dramatically increased the number of RGP cells found at the ventricular surface. The authors suggest that the amount of dynein recruited to the nuclear envelope region was therefore sufficient to overcome the opposing forces generated kinesin-3 which are responsible for basal nuclear migration during the G1 phase.The authors observed that the centrosomes remained at the ventricular surface during the periods of nuclear foraging to the basal pial layer (pia is the membranous covering of the brain). Their findings that the motor complex is instead associated with the nucleus in the RGP cells represents an uncommon mechanism. Why this mechanism of tightly coupled migration and mitotic entry evolved is currently unknown but the authors speculate that ectopic cell divisions must somehow interfere with proper neurogenesis.Nuclear migration to the ventricular surface provides direct access to the centrosomes which are assembling the mitotic spindle, and also to additional cues that appear to specify cell fate. The exact orientation of this spindle apparatus has emerged as an important regulator of cell fate, and the subsequent migration of neural and glial progeny. Further exploration of this system may give additional clues about the mechanisms that ultimately specify the size and particular geometry of the cortex. Bearing witness to the phenomenon of symmetric cell division Radial Glial Precursor cells guide cortical development. Credit: Wikipedialast_img read more

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Photographing sneezes at high speed may help find ways to reduce spread

first_imgCredit: New England Journal of Medicine (2016). DOI: 10.1056/NEJMicm1501197 © 2016 Phys.org More information: Lydia Bourouiba. A Sneeze, New England Journal of Medicine (2016). DOI: 10.1056/NEJMicm1501197AbstractA human sneeze can eject droplets of fluid and potentially infectious organisms. The image sequence captures, in increments of 20 msec, the emission of a sneeze cloud produced by a healthy person. The sneeze was produced naturally, without the introduction of additives, colorants, or contaminants for visualization. High-speed video (Video 1, normal speed; Video 2, slowed down by a factor of 67), recorded at 1000 frames per second, shows a turbulent cloud that consists of hot and moist exhaled air, mucosalivary filaments and drops, and residues from droplet evaporation (nuclei). The ejection lasts up to 150 msec (top row) and then transitions into a freely evolving turbulent puff cloud (middle and bottom rows). The largest droplets rapidly settle within 1 to 2 m away from the person. The smaller and evaporating droplets are trapped in the turbulent puff cloud, remain suspended, and, over the course of seconds to a few minutes, can travel the dimensions of a room and land up to 6 to 8 m away. Journal information: New England Journal of Medicine Ah-choo! Sneeze ‘cloud’ quickly covers a room, study finds 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: Photographing sneezes at high speed may help find ways to reduce spread of disease (2016, August 29) retrieved 18 August 2019 from https://phys.org/news/2016-08-high-ways-disease.html Credit: New England Journal of Medicine (2016). DOI: 10.1056/NEJMicm1501197 Explore further Humans sneeze because the body becomes aware of a foreign substance in the sinuses and reacts by forcefully expelling them. Unfortunately, bacteria and viruses can be expelled along with other material in cloud matter which can then be inhaled by other people in the area—causing them to become infected with a disease. In order to better understand what happens during a sneeze, Bourouiba and her team enlisted the assistance of several volunteers—each agreed to being photographed during the act of sneezing.Viewing the results at normal and high speed revealed that there was more going on than expected. First, the researchers found that there were many kinds of movements, such as swirls and eddies. Second, they found that there was a wide range of droplet sizes—some relatively large and some very small. They also found that the cloud formed by a sneeze was very much impacted by the environment in which it occurred—air movement, humidity levels and temperature all had an impact on not only the size of the cloud, but its shape and duration. Most surprisingly of all, perhaps, was the finding that the tiniest droplets could remain suspended in the air for up to several minutes under the right conditions, and could travel as far as several feet. This meant, the researchers explain, that one person sneezing in a room could potentially infect every other person in that room.The goal of the experiments, the researchers note, is to better understand what happens with sneeze clouds in places like hospitals so that changes can be made to reduce their size and duration. While research continues, they suggest that everyone sneeze into their elbows rather than directly into the air around them or into their hands. The objective should be to slow the droplets by causing them to collide with some object, such as a sleeve. (Phys.org)—A team of researchers at MIT led by Lydia Bourouiba has discovered some new properties of sneeze clouds by photographing them with high speed cameras and then studying the footage. In their paper published in the New England Journal of Medicine, the researchers note that the physics of a sneeze cloud are more complicated than might be expected from such a simple event.last_img read more

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Methane still leaking from the ground at site of gas explosion decades

first_imgBall and stick model of methane. Credit: Ben Mills/Public Domain 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 Citation: Methane still leaking from the ground at site of gas explosion decades ago (2017, December 29) retrieved 18 August 2019 from https://phys.org/news/2017-12-methane-leaking-ground-site-gas.html In ‘Gasland’ community, new tests revive old drilling debate © 2017 Phys.orglast_img read more

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Making a mark

first_imgHere’s a quick glance at Day 4 at Wills India Fashion Week Spring Summer 2015.  The starry fashion do at Pragati Maidan witnessed the works of designers Jyoti (Bhanuni), Josh Goraya, Vivek Karunakaran, Mrinalini, Sahil Kochhar, Shweta Kaour (431-88), dev r nil, Urvashi Kaur, Rabani & Rakha, Siddartha Tytler, Raakesh Agarvwal, Vineet Bahl (Premier) and Wendell Rodricks on Saturday, 11 October – Day 4 of the event. The 5-day event in the heart of he city gave fashion lovers a heady taste and feel of the latest spring summer trends. Watch this space for the pictures of the final day!last_img read more

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Salt Lake CCD looted at gunpoint by 4 miscreants

first_imgKolkata: A Cafe Coffee Day (CCD) outlet in Salt Lake was robbed by four miscreants in broad daylight on Monday.Just after the cafe was opened in the morning, four miscreants entered and tied the on-duty service boy Suvankar Ghosh. It was alleged that one of the miscreants took Ghosh on gunpoint so that he did not raise an alarm. According to police sources, Ghosh said around 10:20 am he opened the cafe and was preparing to start the day and welcome customers. Within a few minutes, four persons entered the cafe and surrounded him. One of them took out a gun and pointed it towards his forehead threatening to kill if he raised an alarm. Also Read – Rain batters Kolkata, cripples normal lifeAnother miscreants forced Ghosh to hand over his apron and T-shirt which the miscreant used to tie Ghosh. While two were busy with the service boy, the other two were standing guard. After tying Ghosh, the miscreants opened the cash box and took out the money — approximately Rs 18,000 and fled. A few minutes later, Ghosh managed to untie himself and immediately called the area manager Sumit Singh and narrated the whole incident. Singh called the zonal business head Md Sarfaraz and took Ghosh in a conference call. During the call, Sarfaraz told Singh to reach the cafe at the earliest. He also directed Ghosh to dial 100 and call the police. Also Read – Speeding Jaguar crashes into Mercedes car in Kolkata, 2 pedestrians killed”Ghosh was crying. He told us that four persons robbed the outlet and fled. I told him to call the police. Meanwhile, our senior officials were instructed to reach there as soon as possible,” said Sarfaraz. Sarfaraz also informed that they had a Close Circuit TeleVision (CCTV) camera at the cash counter. The footages will be examined. Sources informed that Ghosh and a person from the Information Technology (IT) department have been called at Bidhannagar North Police Station for questioning. The local councillor Anindya Chatterjee has expressed his concern over the incident. He said: “Such an incident in broad daylight is a matter of deep concern. Sleuths will do the needful.” Police informed that a case has been lodged on charges of robbery and arms act.last_img read more

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CM to expand ministry today

first_imgKolkata: The Mamata Banerjee government will witness an expansion on Thursday with four new faces being inducted into it.The new ministers will be sworn in during a function at Raj Bhavan at 1.30 pm. Governor K N Tripathi will conduct the oath of secrecy. Four MLAs who are likely to become ministers are Tapas Roy, Sujit Bose, Ratna Ghosh and Dr Nirmal Maji. Once these MLAs are inducted, the number will go up to 44. Four ministers have been dropped since the second term of the TMC in office after winning the 2016 Assembly elections. They are Sovan Chatterjee, Abani Joardar, James Kujur and Chudamani Mahato. Also Read – Rain batters Kolkata, cripples normal lifeThe decision to expand the ministry is to reduce the burden on some ministers and better the functioning of the state government. For example, Firhad Hakim looks after the Urban Development and Municipal Affairs department along with Fire and Emergency Services. He is also the Mayor. Moloy Ghatak looks after Law, Labour and Public Health Engineering departments. Aroop Biswas also looks after three departments, namely Sports, Youth Affairs and Public Works (PWD) Department. Sukumar Hansda is likely to be appointed as the Deputy Speaker in the West Bengal Legislative Assembly which fell vacant following the death of Haider Aziz Safwi. Also Read – Speeding Jaguar crashes into Mercedes car in Kolkata, 2 pedestrians killedTo improve the administrative work of the respective departments, Chief Minister Mamata Banerjee has been holding regular administrative review meetings in the districts since she came to power in 2011. These meetings give an opportunity to the officials working in the districts to interact with the Chief Minister and other senior bureaucrats directly including the Chief Secretary which helps to resolve local issues. Also, the MLAs get a chance to talk to the Chief Minister over the ongoing projects and place their demands if any. If they are justified, Banerjee is often found taking up immediate measures and on many occasions, has asked the concerned Principal Secretary or the Additional Chief Secretary to resolve the matter. Of the four MLAs likely to be inducted, Tapas Roy, MLA from Baranagar is the deputy chief whip. He is associated with the government functioning for many years. Sujit Bose, MLA from Salt Lake, is well known for his organisational capabilities while Nirmal Maji is the president of the State Medical Council and chairman of Rogi Kalyan Samity of Calcutta Medical College and Hospital. In the next three years, there will be three elections. The Lok Sabha election will be held in 2019 followed by the Kolkata Municipal Corporation (KMC) polls in 2020 and then the Assembly election in 2021. Hence, the Chief Minister is leaving no stone unturned and wants to complete all the pending work on time.last_img read more

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