August 31, 2019

Dreamlab cracks the code to Microsofts wireless keyboards

first_img Citation: Dreamlab cracks the code to Microsoft’s wireless keyboards (2007, December 4) retrieved 18 August 2019 from https://phys.org/news/2007-12-dreamlab-code-microsoft-wireless-keyboards.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. The IT security center claims that it has developed simple technology that can “sniff out” the keystrokes typed on Microsoft´s Wireless Optical Desktop 1000 and 2000 keyboards. At distances of up to 10 meters, Dreamlab´s technology can capture and decrypt keystrokes that may contain information such as user names, passwords, credit card numbers, and confidential messages. With appropriate technical equipment, Dreamlab predicts that eavesdropping at even larger distances is possible.Companies like Microsoft and Logitech use the 27 MHz radio band for communication between wireless keyboards and a computer. As Max Moser of Dreamlab Technologies says, “Wireless communication is only as secure as the encryption technology used. Due to its nature, it can be tapped with little effort.”Because Microsoft´s encryption technology uses only about 256 possible encryption keys, it did not take many tries for Dreamlab´s software to decode the data. In this case, just a simple radio receiver, a soundcard, and suitable software were enough to break the cryptography codes and tap into the radio frequencies. Dreamlab says it immediately alerted the manufacturer to the security loophole, but it will be a long process to fix the problem. In the meantime, Dreamlab hopes that consumers using wireless keyboards will take caution when using any wireless keyboard. Because Microsoft´s other wireless devices operate on similar technology, Dreamlab warns that these devices might also be prone to attacks. Some of these devices include the Wireless Optical Desktop 3000, Wireless Optical Desktop 4000 and other products in the 27 Mhz-based Wireless Laser Desktop series.Dreamlab has not released the specific tools and methods used to break the code, but researchers at Dreamlab have created a presentation about their work explaining the procedures used and the pitfalls encountered during the analysis. They plan to present their work at future events, mainly for educational purposes. The company hopes that this information will make researchers more aware of the interesting topic of analyzing unknown radio-based data transmission.More information:Dreamlab´s white paper: “We know what you typed last summer”Dreamlab´s VideoCopyright 2007 Lisa Zyga & Physorg.com. All rights reserved. Web Sites and Bloggers may provide the introductory paragraph and a link to the story, but may not copy, redistribute, rewrite or publish the story in whole or in part without written permission of the author or publisher. Anyone using a wireless keyboard might be a little concerned with a recent announcement by the Swiss company Dreamlab Technologies. Microsoft Wireless Optical Desktop 1000 last_img read more

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August 31, 2019

Mandrill monkey creates tool for a pedicure w video

first_img While Great Apes like the chimpanzee and orangutan have been observed making tools to aid in the extraction of termites from mounds, this is the first time a smaller species of monkey has been observed making tools. Citation: Mandrill monkey creates tool for a pedicure (w/ video) (2011, July 25) retrieved 18 August 2019 from https://phys.org/news/2011-07-mandrill-monkey-tool-pedicure-video.html Chimpanzees use sex tools More information: Observation of tool use and modification for apparent hygiene purposes in a mandrill, Behavioural Processes, doi:10.1016/j.beproc.2011.06.003AbstractTool making or modification to produce a tool of apparent improved functionality has rarely been reported in monkeys, especially when tools are used outside the context of food acquisition. We report on an observation of selection, modification and use of splinters for hygiene purposes in a male mandrill. The zoo-housed animal was video-recorded breaking splinters in sequence to use them underneath his toenails. This record brings forward new evidence that the ability to use and modify tools is not limited to apes and some New World monkeys but is also apparent in Old Word monkeys.via BBC The discovery happened when lead researchers Dr. Riccardo Pansini was filming the mandrill as part of a stress-related behavior study being conducted at Chester Zoo. In the video, a large male mandrill works to pull apart bark on a twig to make the tool as narrow as he can. Once completed, he then uses the newly fashioned tool to clean and remove the dirt out from underneath his toenails.Mandrills have also been seen modifying twigs to clean out their ears and researchers believe they do this in order to prevent ear infections. Pansini believes this new behavior of creating tools for pedicures may be due to the fact the mandrill is in captivity. Because the mandrill is not focused on mating or finding food, he has the extra time on his hands to perform what could be considered as a trivial task. Yet, he has modified a tool that would normally be used for the hygienic purposes of cleaning out his ears and used it on his toenails.However, other researchers are not as quick to call this tool usage. Dr. Amanda Seed from the University of St Andrews argues that the use of this twig for self-cleaning is not something new and is not sure that it really ranks up there with tool usage. The use of objects to help with self-care is just not the same as creating a tool to help find food like the chimpanzees do when collecting termites. 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. © 2010 PhysOrg.com (PhysOrg.com) — In a recent paper published in Behavioural Processes, scientists reveal a film of a mandrill monkey creating a tool from a stick in order to remove dirt from underneath its toenails. This new finding shows that monkeys may be more intelligent than scientists have previously believed. Explore furtherlast_img read more

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August 31, 2019

Research team creates photoelectrowetting circuit

first_img More information: “Actuation at a distance” of microelectromechanical systems using photoelectrowetting: proof-of-concept, arXiv:1201.2873v1 [physics.flu-dyn] arxiv.org/abs/1201.2873AbstractWe demonstrate here a proof-of-concept experiment that microelectromechanical systems (MEMS) can be actuated using photoelectrowetting. In order to demonstrate this, a 30 mu m thick aluminum cantilever is actuated using an ordinary white light source. A deflection of 56 mu m is observed using a light irradiance equal to approx 1000 W m-2 at a bias of 7 V. The deflection of the cantilever relies on the recently observed photoelectrowetting effect [Sci. Rep.1, 184 (2011)]. Such “actuation at a distance” could be useful for optical addressing and control of autonomous wireless sensors, MEMS and microsystems. © 2011 PhysOrg.com Explore further Japanese company develops silver ink that requires no heat to harden Experimental setup showing aluminum cantilever, liquid droplet (H2O/HCl, c = 0.01M) and Teflon AF/silicon photoelectrowetting surface. Image from arXiv:1201.2873v1. Citation: Research team creates photoelectrowetting circuit (2012, January 20) retrieved 18 August 2019 from https://phys.org/news/2012-01-team-photoelectrowetting-circuit.html Deflection of a 30µm thick Al cantilever using photoelectrowetting on a Teflon AF (265 nm)/p-type silicon (NA =1.8×10^15 cm-3) stack at (a) 0V (dark), (b) +20V (dark) and (c) +20V (illuminated). Image from arXiv:1201.2873v1 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. (PhysOrg.com) — Working together, Matthieu Gaudet and Steve Arscott from the University of Lille (IEMN lab) in France have built a circuit using a phenomenon known as photoelectrowetting, which allows a switch to be turned on by shining a light on it. As the two describe in their paper on the pre-print server arXiv, the circuit is made by using the principle of electrowetting to cause a drop of water to thin resulting in a conducting cantilever to fall towards a second conducting material allowing current to pass through. The circuit built by Arscott and his colleague uses photoelectrowetting to allow for switching from a distance using sunlight. Their circuit is essentially a capacitor, where two conducting materials are separated by an insulator. The substrate is made of P-Type silicon; above it is a layer of Teflon, and above that is a space with one drop of water in it. The drop of water holds up the free end of a cantilever made of Aluminum. The circuit is completed when light is shined on the water, causing the wetting angle to decrease, making the drop of water thinner. When that happens, the cantilever falls towards the electrode completing the circuit.The ability to switch a circuit on from a distance using only light will lead to advances in remote sensors and likely will also aid in the relatively new field of research called Lab on a Chip (LoC), which is focused on constructing self-contained devices that can perform tests on sample materials in remote areas. Electrowetting is a process whereby voltage applied to a liquid causes the wetting angle of the liquid to change. The wetting angle is the amount of rise seen when a liquid sits on a surface and is determined by the adhesive and cohesive forces inherent in the liquid. Differences in wetting angle can be seen when comparing drops of water sitting in a Teflon pan versus on an ordinary countertop. Subsequent research by Arscott showed that the same effect could be achieved by shining a light on a water droplet if it was sitting on an insulated conductor. He called the result photoelectrowetting.last_img read more

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August 31, 2019

Could fast radio bursts be produced by collisions between neutron stars and

first_img(Phys.org)—Fast radio bursts (FRBs) are short bursts of radio emissions from the sky lasting only few milliseconds. However, their origin is still unknown, perplexing astronomers for years since the discovery of the first FRB in 2007. According to various studies, these peculiar radio bursts could be a product of a supernova, two black holes colliding, a spinning neutron star, or they could be related to hyperflares of magnetars. Now, astronomers from the Nanjing University in China are offering another explanation for this puzzling question, asking if collisions of asteroids with neutron stars are producing FRBs. Artist impression of a fast radio burst reaching Earth. Photo credit: Jingchuan Yu, Beijing Planetarium Explore further Detected radio bursts evidence of ‘exotic phenomena’ © 2015 Phys.org More information: Collision between Neutron Stars and Asteroids as a Mechanism for Fast Radio Bursts, arXiv:1512.06519 [astro-ph.HE] arxiv.org/abs/1512.06519AbstractAs a new kind of radio transient sources detected at ∼1.4 GHz, fast radio bursts are specially characterized by their short durations and high intensities. Although only ten events are detected so far, fast radio bursts may actually frequently happen at a rate of ∼103 —- 104 sky−1 day−1. We suggest that fast radio bursts can be produced by the collisions between neutron stars and asteroids. This model can naturally explain the millisecond duration of fast radio bursts. The energetics and event rate can also be safely accounted for. Fast radio bursts thus may be one side of the multifaces of the neutron star-small body collision events, which are previously expected to lead to X-ray/gamma-ray bursts or glitch/anti-glitches. A paper, detailing the latest finding, co-authored by Yong Feng Huang and Jin-Jun Geng, was published online in the arXiv journal on Dec. 21.The authors of the paper, using the data from about ten FRBs, obtained key parameters that could help solve the mystery of these radio bursts. FRBs were generally discovered through single-pulse search methods by using archive data of wide-field pulsar surveys at the multi-beam 64-meter Parkes radio telescope in Australia and the 305-meter Arecibo telescope, located in Puerto Rico.FRBs are usually detected by large radio telescopes at 1.4 GHz. These events are of extremely short duration, typically lasting for less than a few milliseconds, but are detected with high intensity. The researchers noted that there are four main stages of detecting fast radio bursts.”First, the radio telescopes are uniformly pointing toward the sky at the time of the detections. Second, for the multi-beam receiver system, usually the signal was recorded only in very few beams, typically less than four, especially by adjacent beams. Third, FRBs are characterized by large dispersion measure (DM) values, significantly larger than terrestrial sources of interference. Fourth, the observed behaviors of time delay and frequency evolution of FRBs strongly indicate that cold-plasma dispersion should have been engraved in the radio signal,” the scientists wrote in the paper.The astronomers noted also that FRBs cannot be quickly followed up to catch the counterparts in other wavelengths, as they are generally screened out from archive data, as was done by Huang and Geng in their latest research. Thus, the absence of counterparts poses great difficulties in understanding the true nature of FRBs.The authors of the paper insist that the explanations offered by previous studies are unsatisfactory when it comes to the origin of these radio bursts. They imply that a very strong electromagnetic outburst or multi-band afterglow would be triggered and should be observed tin association with the FRB event. However, non of these phenomena have been observed.The new hypothesis, presented in the study, can account for many of the observational characteristics of FRBs, such as the duration, the energetics and the event rate. They suggest that the collision between asteroids and neutron stars can reasonably explain many of the observed features.Scientists have expected that the collision of small bodies with neutron stars can give birth to some kinds of X-ray bursts or some special gamma-ray bursts. The new research accounts for the possibility that these collisions are behind fast radio bursts.”Our model can naturally explain the millisecond duration of FRBs. It can also well account for various other aspects of FRBs,” the scientists wrote.They hope that the future Chinese 500-meter Aperture Spherical Radio Telescope (FAST), which is expected to be ready for observations in late 2016, can contribute to the study of the multidimensionality of such collisions and will reveal new insights into the nature of FRBs. 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: Could fast radio bursts be produced by collisions between neutron stars and asteroids? (2015, December 23) retrieved 18 August 2019 from https://phys.org/news/2015-12-fast-radio-collisions-neutron-stars.htmllast_img read more

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August 31, 2019

Meteorite impact caused the highest temperature ever recorded on Earths surface

first_imgAn international team of researchers has found evidence of an ancient meteorite colliding with ground rock on Earth, producing the highest temperature ever recorded on the planet’s surface. In their paper published in the journal Earth and Planetary Science Letters, the team describes their findings after studying an impact crater in Canada and how they were able to calculate the temperature for an impact that occurred so many years ago. Citation: Meteorite impact caused the highest temperature ever recorded on Earth’s surface (2017, September 18) retrieved 18 August 2019 from https://phys.org/news/2017-09-meteorite-impact-highest-temperature-earth.html Planetary scientists believe that Earth was bombarded on a regular basis during its formative years—by meteorites and other space rocks. Some of those collisions left behind evidence that is still observable today in the form of craters. One of them is Mistastin Lake crater located in Labrador Canada, which is approximately 28 kilometers across, suggesting that the object that struck the Earth there was large. The researchers dated the collision that caused the crater back to approximately 38 million years ago.Most craters, the researchers note, do not have much if any evidence of the object that caused them—they vaporize on impact. Likewise, most of the material struck by meteors tends to vaporize, as well. Because of this, it has been difficult to learn more about the nature of the space rocks and the conditions that occurred when they struck. One thing scientists do know, however, is that when collisions occur, a lot of energy is released in the form of heat—the question is how much. In this new effort, the researchers found a way to measure the heat produced when the object struck the ground in Canada.In studying the crater, the researchers found evidence of zircon, a common mineral, being changed into cubic zirconia. Prior work with both minerals has shown that temperatures of 2370° C are required for that to take place. Thus, the heat generated by the impact had to have reached at least that temperature. The finding represents the hottest temperature ever found to exist naturally on the surface of the Earth. The researchers note that this is the first time zirconia has ever been used to calculate the heat of an impact and also shows that some rocks can get hotter naturally than has been thought. More information: Nicholas E. Timms et al. Cubic zirconia in >2370 °C impact melt records Earth’s hottest crust, Earth and Planetary Science Letters (2017). DOI: 10.1016/j.epsl.2017.08.012 Transformations to granular zircon revealed: Meteor Crater, Arizona Credit: CC0 Public Domaincenter_img 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: Earth and Planetary Science Letters Explore further © 2017 Phys.orglast_img read more

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August 31, 2019

Love happens without intimation

first_imgI’m 32, married for 5 years. I love my husband but I think I’ve fallen in love with someone else. What should I do?Love happens without intimation and ‘love’ as a feeling can never be defined or dictated. I understand that the feeling of love for someone outside your marriage can lead to a suppressed feeling of guilt. But, honestly speaking – cool down, relax! As long as you are happy with this new season of love and its colors, don’t bother your nerves. Always remember, anything that ensures peaceful sleep and constant happiness is welcome. Just one word of caution, keep your personal life to yourself. Don’t speak about it to others. Have a happy life dear. Also Read – ‘Playing Jojo was emotionally exhausting’I’m from South Delhi. I recently got engaged, I have physical intimacy with my fiancé. But somehow, I fantasise about her sister a lot.There’s a problem for sure! Specially if the ‘fantasy’ doesn’t maintain its secrecy! Its  all in your mind. There are millions who fantasise models, actors while getting intimate with their partners. And no rule book for penalizing such acts. All I can say, Be careful!Your ‘would-be’ would be really shattered if she knows it. Also Read – Leslie doing new comedy special with NetflixSo either concentrate and take her more seriously and get the sister out of your mind or marry the sister. Or change your mind and marry a completely new person who probably has no ‘sister’.But whatever you do, be quiet about it. I am 59. Met a young girl on internet. She’s taking a lot of interest in me. I’m getting nervous. What should I do?Congrats! That’s amazing!  Age should never be a reason to hold you back from exploring. If you’re happy with this ‘new episode’ of internet buddies, just get happier! You’ve nothing to win or lose and mental happiness over all is the biggest trophy. So, dear friend, just browse on, just flow on. We have two kids and I love my wife. But couple of months back, my old girlfriend got in touch and I got to know that she’s divorced. We are in touch and I went out for coffee with her twice. I’m very guilty suppressing it from my wife as I fear if she hears, her heart will break. What should I do? Depends on your personal equation with her. Tell her only if you guys are real good friends. Its sometimes very difficult for Indian woman to accept any face beside her man easily. So, let the ice melt on its own. Don’t rush to reveal. Let the coffee breaks continue peacefully  so that life remains happy for all.I love my wife but don’t enjoy our physical chemistry as she’s damn frigid. I don’t know how to make it better.You should start from the basics. Begin from the beginning. Start from adding small touches of love, surprise kisses, hugs. Just holding on and longer can turn it magically. Try to seduce her at any unexpected moment – the kitchen, the garden, the, those corners of home that remain unexplored. Get wild there. You can watch porn together and talk about it. Intimate conversations during sex and talking about sex may work for her. Keep exploring, read books and keep loving her. At the end of the day we all know what stays.I am in high school. I have developed the habit of watching porn everyday. I am unable to stop. What can I do? Is it normal. Listen dear, you have to come out of it gradually. Pornography is unreal and if you continue then you might lose interest in having sex with your partner/partners in the future. The virtual is a fantasy and it has to get over someday. Watch them but less.Have a love or life query you cannot find an answer to? Send your questions to roopshashotm@gmail.comlast_img read more

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August 31, 2019

Symphonies of Yore

first_imgCapital’s music enthusiasts got together to pay  a tribute to the yesteryears singing sensation Geeta Dutt on her 41st Death Anniversary at Kamani Auditorium in New Delhi. Team Svarpana, a Delhi-based group of 10 classically-trained, passionate music enthusiasts of all age groups and walks of life. Pawan Naidu, the fountainhead for the group designed this very presentation weaving the great singers’ story alongwith her songs. The rather melancholic life that she lead with untold events that marked her career and personal journey. The evening titled  Geeta Dutt…Aik Adhoora Sapna will have 17 ever  green, joyful and  melancholic songs of the veteran including  Ai Dil Muje Bata De, Babuji, dheere chalna, Koi  Chupke se aake,  Na jao saiyya,  Mera sundar Sapna beet gaya,  Vaqt ne kiya,  Janoo Janoo Re, Meri  jaan. These songs will be sung mainly by Shetal  accompanied by Jyoti and Stuti in duets – all classically trained singers. Also Read – ‘Playing Jojo was emotionally exhausting’When asked why a tribute to Geeta Dutt, Pawan replied ‘because no one remembers her,’ he has devoted 25 years to present a ‘no nonsense live concert of Geeta Dutt by a solo artist to make his dream come true. Who remembers that this week on July 20th was Geeta Dutt’s death anniversary?,’ he asks adding  that they had been  paying tribute to her every year since 2007 to packed houses across the country. ‘We have taken special care that the songs have same expressions as she would ingrain in her intoxicating voice. Since she was not deeply trained in classical, expressions dominated most of her songs which struck the right chord with all and sundry, everyone could sing her songs.’ Also Read – Leslie doing new comedy special with NetflixAdds Shetal, the lead vocalist for evening, ‘I read in Geeta Dutt’s blog maintained by her daughter in which she says that ‘no one pays tribute to my mother’ so she had prepared Pal a music CD dedicated  to her some time ago. We are trying to contact her to say that we have not forgotten her.’The evening is called Aik Adhoora Sapna to indicate at the loneliness the versatile singer lived almost all through her life.  Says Mr. Naidu, ‘Geeta Ghosh Roy Chowdhury,  a highly qualified woman hailing from an aristocratic zamindar family of Faridpur (before Partition) was at the peak of her career when she married Guru Dutt to become Geeta Dutt  –  then a struggling assistant to different directors. Dutt hailed from a Saraswat Brahman family and their union was a taboo affair in their families.’He adds, ‘If a person of Guru Dutt’s sensibilities could fall for Geeta Dutt, she must have had some tremendous qualities, yet he could not sustain respect for this relationship. He fell for Wahida Rehman, and Geeta was left alone’.last_img read more

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August 31, 2019

New Town to be first in state to get AC electric buses

first_imgKolkata: New Town is going to the first area in Bengal, where air-conditioned electric buses will be introduced soon.The vehicles will be introduced in the areas that are not connected by buses. Three buses will be introduced, which will follow a circular route. Two buses will be for Action Area I and one for Action Area II. The buses will go up to Unitech, covering the campus of St. Xavier’s University and Karigari Bhavan. The average speed of the buses will be between 40-50 kmph. Also Read – Heavy rain hits traffic, flightsThe fare of the buses will be Rs 10. There will be no conductors. The drivers will collect the fare and a machine will be installed to generate the tickets.The bus drivers will be given special training to handle the buses along with collection of tickets. The battery needs to be charged and charging stations have come up. The body of the buses with 32 seats has been built by Eicher, while Karnataka based KPIT has installed the electrical systems. The buses are likely to be introduced in the middle of May. Trial runs are being made.New Town has been declared as a green city and steps have already been taken by Housing Infrastructure Development Corporation (HIDCO). Cycle sharing, an eco-friendly scheme, has become a great success and discussions are on to introduce e-vehicles on sharing basis as well. LED lamps have been installed in street lights to conserve power.last_img read more

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August 31, 2019

WB panchayat poll on May 14 State Election Commission

first_imgKolkata: Panchayat election in West Bengal will be held on a single day on May 14, the State Election Commission (SEC) announced today. Earlier, the SEC had announced that the polling would be held in three phases on May 1, 2 and 5. The polling had to be deferred after opposition parties moved courts alleging violence and intimidation by the ruling party during the nomination process. “The panchayat election will be held on May 14,” a spokesman of the SEC told newsmen here.last_img

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August 31, 2019

Dead murder accused case HC asks Delhi Police to probe

first_imgThe Delhi High Court has directed city police to probe whether some of its officers suppressed facts in a case pertaining to identification of a body as that of a murder accused who had jumped bail.The accused had allegedly connived with his family members to show the unidentified body as his own to get him declared dead by Uttar Pradesh Police.A special bench of justices Kailash Gambhir and Sunita Gupta directed the DCP concerned, under whose jurisdiction the Seelampur police station falls, to “carefully go through report of UP police” and file a status report by next date of hearing.It issued the direction after noting that UP Police in its report has said that some officers of Anti Auto Theft Squad of Seelampur police station were “guilty of suppressing the facts in the matter”.“Conduct of all these officers is not above suspicion. It was a very serious issue where a decomposed body of some person came to be identified as that of the appellant.“As per the UP police report the officials here are trying to come in the way of justice. It will not be allowed in this case,” the court said, while issuing the directions to Delhi Police. The bench also made it clear that “the necessary facts shall be fully inquired into and no casual approach will be entertained” and directed that the status report be filed in four weeks.The court was hearing the appeal of Rajbir against his conviction by a trial court here in a murder case. During pendency of his appeal in court, he had obtained bail and then went missing.Despite repeated summons, when the court had failed to get his presence in the appeal case, it had decided to direct the police in Ghaziabad to trace him since he belonged to that district.Later information, through UP Police, was received by the court that the accused is dead. UP Police had said family of the accused had identified the clothes found on the body as those worn by Rajbir. The body was handed over to them and they cremated it and got a death certificate in his name.last_img read more

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