Month: August 2019

Apples iPad Vs Lenovos IdeaPad U1Hybrid Notebook w Video

first_img Citation: Apple’s iPad Vs Lenovo’s IdeaPad U1Hybrid Notebook (w/ Video) (2010, January 28) retrieved 18 August 2019 from https://phys.org/news/2010-01-apple-ipad-lenovo-ideapad-u1hybrid.html The iPad has no multitasking capabilities which can be counter-productive; how can you copy and paste between two application? This is a basic requirement that is even available in some smartphones.No Flash support. Many websites use flash for video streaming as well as movie content providers like Hulu, Fancast, and others. The screen ratio is 4:3 and is not HD ready. The screen itself displays 132 ppi as compared to the iPhone’s 163 ppi. This leaves much to be desired when viewing streaming video.The good news is the iPad has optional keyboard dock, camera connection kit and an Apple-designed case; all of which will raise the basic cost.In the 2010 CES, Lenovo announced their IdeaPad U1Hybrid Notebook. This device has unique detach-and-converge design that lets users easily remove the screen to instantly switch from clamshell mode to a multi-touch slate tablet. Lenovo’s amazing Tablet/PC Hybrid brings a tablet and a PC together in an amazingly elegant way. It’s a tablet. It’s a notebook computer. In the clamshell mode the ideaPad runs Windows 7 Home Edition and when detached, in the tablet mode, runs Skylight OS. Skylight OS is a custom user interface by Lenovo built on top of the Linux kernel. Since both OS’s support Adobe Flash there’s no problems watching flash multimedia in clamshell or tablet mode.Both operating systems also provide users with a wide range of existing applications that are not found in the iPad except for existing iPhone apps.Of course these are not the only two touch tablets that we will see in 2010. This year we can see completion heating up between eReaders and touch tablets. The winner will have to be a device that is both innovative and affordable. Lenovo’s IdeaPad U1Hybrid Notebook 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. Glance: How Apple’s iPad measures upcenter_img More information: Lenovo IdeaPad news release: news.lenovo.com/article_displa … .cfm?article_id=1301 Explore further © 2010 PhysOrg.com (PhysOrg.com) — Apple’s announcement on their new iPad left some disappointed in its capabilities and lack of. The iPad is sleek and thin at .53 inches and weighs only 1.4 pounds. According to Apple the iPad will run iPhone apps without any modification. There are however some features that will have consumers thinking twice before considering to buy the iPad.last_img read more

Start up creates a nofocus point and shoot camera

first_imgLytro is having the cameras made itself and did not disclose the planned price. Citation: Start up creates a ‘no-focus’ point and shoot camera (2011, June 22) retrieved 18 August 2019 from https://phys.org/news/2011-06-no-focus-potentially-3d-camera.html (PhysOrg.com) — If you have ever used a “Point and Shoot” style of camera in the last few years then you know that that term is a misnomer because unless you are using a disposable camera you are going to be waiting for that camera to auto-focus and that focus can take up to 45 seconds to find its focus and allow you to take a picture. It is annoying to say the least if the action that you wanted a picture of can’t be stopped like a posed photo. Since that focus can mean that you may miss a winning goal or a really cute moment it can be more than just annoying. 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 More information: Picture gallery: www.lytro.com/picture_gallery#center_img Computer scientists create ‘light field camera’ banishing fuzzy photos One start up, based in the Silicon Valley, is looking to change all of that. The company is named Lytro and it is based on the work of Dr. Ren Ng whose dissertation on light-field technology was published five years ago to accolades by his Alma Matter Stanford University. Dr. Ng has recently received $50 million in funding in order to create his company, which is about to launch a digital camera that is free of the focus factor, by getting all of the information about the surroundings that is possible. “Shoot now, focus later,” Dr. Ng said today in a blog post describing this innovation. The machine takes a photo by getting as much of the information about the field of light in the general area as possible. This will allow users to adjust the focus as many times as they want after the photo has been taken. It will also allow users to alter a photos level, and depending on your setup may even allow users to create images that are three-dimensional. Explore furtherlast_img read more

Researchers find slime mold feeding fronds have memristance

first_img Memristance, first described by Leon Chua back in 1971, is where a material has the unique property of undergoing a change in electrical resistance as current is applied. When applied in one direction, resistance increases; when applied in the other, it decreases. More importantly perhaps, such materials also have the remarkable ability to “remember” how much resistance was being applied when the power was turned off. When electricity is restored, the material has the same resistance it had at its prior stopping point. For that reason, researchers have been interested in finding a way to use memristance materials in computers. To date, some progress has been in creating artificial materials with memristance —a team at Hewlett Packard, for example, has been successful in creating a type of switching memristor using titanium dioxide.To better understand how memristance materials work, researchers have turned to nature for examples. In this new effort, the researchers applied voltage to feeding frond samples of the slime mold and found that it conformed to the criteria that describe a memristance material. The finding, they suggest, should help in the development of bio-electronic circuits that can be grown rather than created from other materials.The team’s work builds on prior studies that have shown slime molds capable of finding the shortest path to a food source, which the researchers note could be useful in computer algorithms that seek to perform similar tasks. They acknowledge that it isn’t likely that slime molds will one day sit at the heart of future computers systems, of course, but suggest that biological materials similar to that found in molds could one day be used to create computers unlike anything that exists today. Explore further Study shows slime molds have spatial memory More information: Are Slime Moulds Living Memristors? arXiv:1306.3414 [cs.ET] arxiv.org/abs/1306.3414AbstractIn laboratory experiments we demonstrate that protoplasmic tubes of acellular slime mould emph{Physarum polycephalum} show current versus voltage profiles consistent with memristive systems. This result complements previous findings on memristive properties of other living systems (human skin and blood and leaves) and contributes to development of self-growing bio-electronic circuits. © 2013 Phys.org (Phys.org) —Researchers at the University of the West of England have found that the feeding fronds on a type of slime mold have a property known memory resistance, which has been shortened to the term memristance. In their paper uploaded to the preprint server arXiv, the team describes how experiments on the slime mold P. polycephalum demonstrated the unique property previously only found naturally in human sweat glands, blood and some tree leaves.center_img Journal information: arXiv An example from on the experiment inoculated with nanoparticles. After measurements, the tube has thinned, unnecessary parts have been ‘burnt off’, colour is a lighter hue. Credit: arXiv:1306.3414 [cs.ET] Citation: Researchers find slime mold feeding fronds have memristance (2013, June 20) retrieved 18 August 2019 from https://phys.org/news/2013-06-slime-mold-fronds-memristance.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

Researchers discover antifreeze protein with water filled core

first_img(Phys.org) —A team of researches with Queen’s University, in Canada has found that the antifreeze protein Maxi, defies the normal expectations of a protein by having a core filled with water molecules. In their paper published in the journal Science, describing their research with the protein, the team suggests that Maxi may cause scientists to rethink the mechanisms and kinetics of protein folding. Kim Sharp describes the research effort and the team’s finding in a Perspective piece in the same journal. Antifreeze proteins are useful because they absorb to the surface of ice crystals and in so doing, prevent them from growing—solutions that harbor them thus remain in a liquid state at temperatures below freezing. Proteins come about as a result of a process known as folding—aliphatic and aromatic side chains pack together forcing water out—without water in the core the protein prevents ice crystal formation. Because the cores that result are hydrophobic they are known as being anhydrous, and scientists believe they come about through one of two processes: evaporation or expulsion. In this new effort the researchers have turned the understanding of antifreeze protein folding on its head, as Maxi, when its formed via folding, doesn’t force all the water out of its core, instead it retains 400 water molecules. This discovery has caused the research team to question whether the prevailing views regarding protein folding in general are correct.With water in its core, it would seem that Maxi would allow ice crystal formation, but that’s not the case, and it’s because Maxi has hydrophobic molecules on the outside of its structure, thus the molecule appears almost as if inside out. With that the case, the question arises of how the protein arrives at its structure through folding? The researchers don’t know but suspect it aligns more with the protein folding that normally follows the expulsion approach as it doesn’t seem possible that such a protein could develop due to an evaporative process.The researchers learned of the odd structure of Maxi by looking at it at 1.8-angstrom resolution—close enough to count the water molecules inside and to see that they were effectively trapped in a way that allowed for stabilization—the protein is longer than most antifreeze proteins. Sharp suggests that further study of Maxi will lead to a better understanding of the true mechanics of protein folding and ultimately a clearer view of protein formation in general. This document is subject to copyright. Apart from any fair dealing for the purpose of private study or research, no part may be reproduced without the written permission. The content is provided for information purposes only. © 2014 Phys.org Journal information: Science Four-helix bundle structure of Maxi has an open core. Credit: Science 14 February 2014: Vol. 343 no. 6172 pp. 795-798 DOI: 10.1126/science.1247407center_img Dance of water molecules turns fire-colored beetles into antifreeze artists Citation: Researchers discover antifreeze protein with water filled core (2014, February 14) retrieved 18 August 2019 from https://phys.org/news/2014-02-antifreeze-protein-core.html More information: An Antifreeze Protein Folds with an Interior Network of More Than 400 Semi-Clathrate Waters, Science 14 February 2014: Vol. 343 no. 6172 pp. 795-798 DOI: 10.1126/science.1247407AbstractWhen polypeptide chains fold into a protein, hydrophobic groups are compacted in the center with exclusion of water. We report the crystal structure of an alanine-rich antifreeze protein that retains ~400 waters in its core. The putative ice-binding residues of this dimeric, four-helix bundle protein point inwards and coordinate the interior waters into two intersecting polypentagonal networks. The bundle makes minimal protein contacts between helices, but is stabilized by anchoring to the semi-clathrate water monolayers through backbone carbonyl groups in the protein interior. The ordered waters extend outwards to the protein surface and likely are involved in ice binding. This protein fold supports both the anchored-clathrate water mechanism of antifreeze protein adsorption to ice and the water-expulsion mechanism of protein folding. Explore furtherlast_img read more

Researchers use cryoelectron microscopy to learn how DNA wraps tightly around nucleosomes

first_img(Phys.org) —A team of researchers working at the Chinese Academy of Sciences, in Beijing, has used cryo-electron microscopy to reveal how it is that DNA wraps so tightly around nuclesomes. In their paper published in the journal Science, the team describes how they managed to identify the path of linker DNA. Andrew Travers offers a Perspective piece in the same issue explaining the team’s findings and what it might mean for DNA research in the future. A specific ratio of DNA packaging proteins ensures normal gene expression during early embryonic development DNA in eukaryote cells (those with a nucleus surrounded by a membrane) comes packaged inside of what are known as nucleosomes, which are materials made up primarily of histone proteins—together they form chromatin. Prior research has shown that nucleosomes exist (due to folding) as coiled structured helix shapes, approximately 30nm in diameter. Inside each helix is a “linker” histone—a fiber that runs the length of the helix. Up until now, the molecular makeup of the linker has been a bit of a mystery, with competing researchers suggesting different ideas. In this new effort, the researchers in China appear to have settled the debate using cryo-electron microscopy, a form of transition electron microscopy where the material being studied is kept at cryogenic temperatures. Examination by the team revealed the linker histone fiber to be constructed from arrays of 12 nucleosomes.The arrayed nucleosomes constitute the longest segment of chromatin observed to date, and help explain how it is that genomes can be packaged, yet remain easily accessible. The researchers found that the linker histone (type H1) binds nucleosomes together into structures known as tetranucleosomal units—they in turn form double-helical structures similar to the DNA that they serve to package. The team notes that the binding that occurs results in stacking, which is how the double-helix is able to form. More information: Cryo-EM Study of the Chromatin Fiber Reveals a Double Helix Twisted by Tetranucleosomal Units, Science 25 April 2014: Vol. 344 no. 6182 pp. 376-380. DOI: 10.1126/science.1251413ABSTRACTThe hierarchical packaging of eukaryotic chromatin plays a central role in transcriptional regulation and other DNA-related biological processes. Here, we report the 11-angstrom–resolution cryogenic electron microscopy (cryo-EM) structures of 30-nanometer chromatin fibers reconstituted in the presence of linker histone H1 and with different nucleosome repeat lengths. The structures show a histone H1-dependent left-handed twist of the repeating tetranucleosomal structural units, within which the four nucleosomes zigzag back and forth with a straight linker DNA. The asymmetric binding and the location of histone H1 in chromatin play a role in the formation of the 30-nanometer fiber. Our results provide mechanistic insights into how nucleosomes compact into higher-order chromatin fibers. Explore further Journal information: Science © 2014 Phys.org Play This video demonstrates how nucleosomes compact into higher-order chromatin fibers and how the hierarchical packaging of eukaryotic chromatin plays a central role in transcriptional regulation and other DNA-related biological processes. Credit: Institute of Biophysics, Chinese Academy of Sciences The findings by the research team point out the important role H1 linker histones play in stacking nucleosomes, which, they note, serves to make chromatin compact. They also note that nucleosomes can fold into other helical structures under different circumstances, which opens the door to other research efforts in the future. Also as Travers points out, their results lead to other questions, such as whether the structures they’ve uncovered correspond to the fiber in its natural state or if there are others. There’s also the question of what happens when the helix is unwound, does it cause changes to internucleosomal interactions? Finding answers to such questions will likely be the focus of the research team in China as well as others working in the field for many years to come. Citation: Researchers use cryo-electron microscopy to learn how DNA wraps tightly around nucleosomes (2014, April 25) retrieved 18 August 2019 from https://phys.org/news/2014-04-cryo-electron-microscopy-dna-tightly-nucleosomes.html PausePlay% buffered00:0000:00UnmuteMuteDisable captionsEnable captionsSettingsCaptionsDisabledQuality0SpeedNormalCaptionsGo back to previous menuQualityGo back to previous menuSpeedGo back to previous menu0.5×0.75×Normal1.25×1.5×1.75×2×Exit fullscreenEnter fullscreen 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

Best of Last Week – New model for dark matter Martian clouds

first_img In unrelated space news, Mars rover Curiosity snapped images of Martian clouds—two years on, the rover is currently driving toward some hills “to do some geology work & also search for clouds,” NASA reported via Twitter. The agency also reported that it had successfully tested the most complex rocket parts ever designed, created using additive 3D printing.In technology news, researchers in Virginia have developed a non-volatile type of memory that improves energy efficiency by two orders of magnitude—it’s based on using voltage generated stress. Meanwhile a partnership between two research groups has resulted in producing the first graphene-based flexible display. It’s still just a prototype, of course, but it does offer perhaps a glimpse of what might be coming to consumers sooner rather than later.In completely unrelated news, a team working in Gibraltar has claimed that cave art was made by Neanderthals, which would make it the first known examples of Neanderthal rock art. Not everyone is as sure as they are. Also, researchers at the University of Manchester and King’s College in the U.K. wonder—is type 2 diabetes really “diabetes” as it’s currently understood? They suggest distinctions be made between diagnosing and treating the two types of the disease.And finally, in a bit of science fiction meeting reality, a team of researchers has demonstrated direct brain-to-brain communication in human subjects. They hooked up volunteers in India and France with brain wave reading gear, then connected them together via the Internet. A volunteer on one side was asked to think of the words “hola” and “ciao” while a volunteer on the other end listened. The team reports that the person on the receiving end was able to “hear” what the other person thought. Where this might lead is anyone’s guess but it most certainly opens the door to whole host of unanswerable questions. (Phys.org) —Most of the big news in physics this past week came from astrophysicists, most notably Mikhail Medvedev—he’s come up with a new model for dark matter, suggesting it’s likely a new type of elementary particle that doesn’t fit the standard model. He calls his new model “flavor-mixed multicomponent dark matter.” Another team of space scientists discovered new clues for determining the solar cycle—little bright spots known as brightpoints my help better predict the personality change the sun undergoes approximately every eleven years. Space scientists also learned that the Milky Way galaxy is part of a truly massive supercluster of galaxies known as Laniakea—Hawaiian for “immense heaven.” Researcher advances a new model for a cosmological enigma—dark matter Explore further © 2014 Phys.orgcenter_img Orange waves and blue rays represent the effect of quantum evaporation. Credit: University of Kansas / KU News Service Citation: Best of Last Week – New model for dark matter, Martian clouds and mind to mind conversing (2014, September 8) retrieved 18 August 2019 from https://phys.org/news/2014-09-week-dark-martian-clouds-mind.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

Of Dilli and its hues

first_imgThe thirteenth weekend of Dilli Haat Utsav presented a delightful evening for visitors. More than simply being a weekly dose of entertainment, the festival was a conducive opportunity for new talent pool. Dilli Haat Utsav is bringing the unheard voices and unseen dance acts on stage. It is a unique ongoing festival of Delhi Tourism in collaboration with Department of Art, Culture and Languages, Government of Delhi. Artists from different institutions like Punjabi Academy, Maithli Bhojpuri Academy, Hindi Academy, Urdu Academy etc. have been performing at Dilli Haats to charm the audience with animated evenings every weekend. Also Read – ‘Playing Jojo was emotionally exhausting’December 13 witnessed eventful performances at Dilli Haat Pitampura and Janakpuri. Artists from Sahitya Kala Parishad performed at Pitampura, while performers from Punjabi Academy enthralled the audience at Dilli Haat Janakpuri. Manipuri cultural program at Pitampura attracted people in large numbers and blazing folk dance and singing by Sabrang Group from Punjabi Academy at Janakpuri made the ambiance even more lively.last_img read more

An eventful June

first_imgThe month of June offers a plethora of events for the art lover in  the Capital. Starting tomorrow an exhibition titled — Stemmed Florals by Ishatvam will showcase a collection of floral renditions in a wide variety of home décor accessories including cheerful cushions with digital prints on dupion. The event is slated to continue  till June 21.Next is a talk — Artistry in Living Ambience by connoisseurs of fine living Akshay and Purnima Sethi at Interarts on June 20-21. Akshay and Purnima will be sharing their experiences as architect and space designer respectively, on the aesthetics of living spaces and how investment in exquisite works of world renowned artists and manufacturers at reasonable prices, could translate into a valuable, long term investment.  Also Read – ‘Playing Jojo was emotionally exhausting’When The Pleats Dance traces the history and evolution of Bharatanatyam Dance Costumes over four decades, through mannequins, photographs and costume displays. The show that commenced on June 10 at IIC is based on the private collection of costumes and jewellery of renowned classical dancer/choreographer Geeta Chandran.Wall Art showcases abstract creations in a design-led craft-based collection of assorted abstract metal sculpture. A dramatic range of contemporary metallic creations in varying moods, silhouettes and hues namely Dynasty, Time Machine, The Elms, Kaleidoscope, Transitional, Magnetic and few with complimenting collectibles in home decor and floor art pieces is being hosted by Elements.last_img read more

CPIM leader visits agitating students of CMCH adds fuel to fire

first_imgKolkata: CPI(M) leader Sujan Chakraborty has further fuelled the ongoing demonstration at Calcutta Medical College and Hospital (CMCH) by extending moral support to the agitating students on Thursday.Some of the MBBS students from second and third year started protest a demonstration inside the hospital campus with a demand of a new hostel. Around six students have started a hunger strike to mount pressure on the CMCH authorities to fulfill their demands. Also Read – Rain batters Kolkata, cripples normal lifeAround 20 interns have joined the movement on Thursday, while six students continue their hunger strike. The students have threatened to continue the agitation till their demands are met.Meanwhile, the Principal of the CMCH, Uchhal Bhadra, has been under treatment in SSKM Hospital after he was heckled by the agitating students on last Tuesday.The incident had drawn sharp criticism from a section of doctors. Many have, however, termed it as a politically motivated incident to hurt the principal with mala-fide intentions.last_img read more

Card skimming case Police suspect involvement of Nigerian gang

first_imgKolkata: The police are suspecting that a gang comprising some Nigerian nationals was behind the unauthorised withdrawal of money from various bank accounts, after skimming of debit cards to get details.The modus operandi of the crime made the police suspect that there could be a “Nigerian” gang behind the entire operation. Preliminary investigation has revealed that the cash was withdrawn using the debit card details from certain places in Delhi. In most of the previous such cases in which money was withdrawn from Delhi, involvement of a “Nigerian gang” was found. Also Read – Rain batters Kolkata, cripples normal lifeThe police have gone through the video footages of surveillance cameras installed in three ATM counters at Mallick Bazar, Golpark and Elgin Road. In these three counters, skimming machines were found fitted at the slot of the ATM machines, where one needs to swipe cards to withdraw money. The video footages have shown a person entering the ATM counter to fit the skimming machine. He had his face covered.Police suspect that the same person had installed skimming machines in all the three ATM counters. In one of the video footages he was found covering his face with a handkerchief. In another he was wearing a cap and in the third ATM counter, he was seen wearing sunglasses. As a result, the police have not got a clear picture of the person and so are preparing his portrait parle. Also Read – Speeding Jaguar crashes into Mercedes car in Kolkata, 2 pedestrians killedPraveen Tripathi, Joint Commissioner of Police (Crime), said: “We are taking all necessary steps to crack the case as early as possible.”It may be mentioned that till yesterday, the police had received as many as 76 such cases and on Thursday, two more such cases have been recorded. Police suspect that the number of cases could go up.Some bank officials, including an assistant general manager of a nationalised bank, have also fallen victim to it. Around Rs 40,000 was withdrawn from the bank account of the assistant general manager. He was earlier the manager of the Golpark Branch of the bank. In another case, Rs 50,000 was withdrawn from the bank account of RJ Nilanjana. She has lodged a complaint with Alipore police station. The police are also keeping a watch at the online shopping sites to get information if skimming machines are being sold without necessary permissions.last_img read more