Citation: AMD Announces Eight New Athlon II Processors (2009, October 20) retrieved 18 August 2019 from https://phys.org/news/2009-10-amd-athlon-ii-processors.html AMD Athlon X2 7750 Black Edition 2.7GHz CPU 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 (PhysOrg.com) — AMD announced today eight new, low cost, Athlon II processors to their Athlon II processor family. AMD has supplemented their standard power processors with 2 quad cores (X4 2.3GHz ‘605e’ and 2.2GHz ‘600e’), 4 triple cores (X3 2.9GHz ‘435’, 2.7GHz ‘425’, 2.3GHz ‘405e’ and 2.2GHz ‘400e’) and 2 dual core processors (X2 2.8GHz ‘240e’ and 2.7GHz ‘235e’). These processors offer excellent performance and low power consumption. With this new line of Athlon II processors, OEM’s and system builders have a wide variety of PC solutions that can provide them with low cost, and power efficient PC’s optimized for Windows 7.All these processors are made using a 45-nanometer production process and have a power consumption of either 45 watts or 95 watts. AMD new Athlon II processors are intended to compete with Intel’s midrange line of CPUs that include the Core 2 Duo E7000 series or E8000 series, with prices ranging from $69 to $143. The Athlon II processor chips are compatible with both Socket AM3 and Socket AM2+ motherboards.When comparing the AMD Athlon II X2 240e processor with Intel’s Core 2 Duo E7400, media and entertainment benchmarks3 performs 70% better with a processor cost saving of $404. The AMD Athlon II X3 435 processor when compared to the Intel Core 2 Duo E8500, delivers a processor cost savings of over $1005 with a 75% media and entertainment benchmarks3 performance.The full new line of Athlon II Processors includes:• AMD Athlon II X2 235e, 45 Watts, 2.7 GHz and priced at $69 • AMD Athlon II X2 240e, 45 Watts, 2.8 GHz and priced at $77• AMD Athlon II X3 400e, 45 Watts, 2.2 GHz and priced at $97 • AMD Athlon II X3 405e, 45 Watts, 2.3 GHz and priced at $102 • AMD Athlon II X3 425, 95 Watts, 2.7 GHz and priced at $76 • AMD Athlon II X3 435, 95 Watts, 2.9 GHz and priced at $87• AMD Athlon II X4 600e, 45 Watts, 2.2 GHz and priced at $133• AMD Athlon II X4 605e, 45 Watts, 2.3 GHz and priced at $143More information: For more information on the new AMD Athlon II processors, visit AMD’s website.© 2009 PhysOrg.com
Explore further Researchers Probe Links Between Modern Humans and Neanderthals The Neanderthal woman died in the Vindija cave in what is now Croatia. Neanderthals are the nearest extinct relative of modern-day humans. Homo sapiens and Neanderthals coexisted for 5-7,000 years, but Neanderthals were gradually forced to retreat to the edges of what is now Europe. The fragments of DNA from the woman’s bones were assembled using human and chimpanzee genomes as references. Researcher Gerald Irzyk said putting the fragments in order is difficult because at first it seems a random assemblage of the nucleotide bases, but there are patterns and motifs that are often specific to a group of organisms.The project to map the genome began in 2005, and is run collaboratively by scientists at the Max Planck Institute in Leipzig, Germany and 454 Life Sciences at Branford, Connecticut. The work has been made possible by today’s powerful computers, which enable scientists to drastically cut the time and cost, but it has still faced many challenges largely through contamination and the breakdown and chemical changes in the biological material over time.When an organism dies, enzymes break DNA into small fragments of only a few hundred base pairs or less. The DNA is also chemically changed over time, which can lead to incorrect interpretations of the sequence. Not only that, but over 90% of the DNA in the samples came from bacteria or other contaminants rather than the bone. Creating body parts, organs, and even a complete living individual once the genome is completely sequenced would be difficult but is theoretically possible. The procedure would involve making possibly millions of changes to the DNA in a human stem cell to match the Neanderthal genetic sequence, but there remain problems because even if the Neanderthal genes could be recreated we do not know how they were expressed. Assuming it can be created, the stem cell with Neanderthal DNA would divide to produce a colony of cells that could then be instructed to become any type of cell in the body, theoretically including an entire individual.Chief science officer of Advanced Cell Technology, Robert Lanza said in Archaeology magazine that “species such as cows and goats are now routinely cloned with few problems,” and while there are many more challenges in the case of cloning a Neanderthal, it possibly could be done. The ethics of such a move would be certain to spark a great deal of debate, and not just between paleoanthropologists.Author of the Archaeology magazine article, Zach Zorich, who has been a keen follower of research on the Neanderthal genome, noted that if created, the Neanderthal would legally deserve the same human rights as we do.It is likely to be quite some time before we need to deal with the ethical issues. Stephan Schuster, a geneticist from Pennsylvania State University, explained that the first draft of the genome will probably contain many errors due to the age of the sample and the contamination, and he calculates the DNA in five different samples of bone would have to be sequenced, and in all the genome would need to be sequenced 30 times before we could be confident of its accuracy.Mapping the genome should allow scientists to answer questions about the relationship between us and Neanderthals, such as whether we interbred, and were separate species. It may also be useful in medical research. Citation: Could Neanderthals live again? (2010, February 11) retrieved 18 August 2019 from https://phys.org/news/2010-02-neanderthals.html (PhysOrg.com) — Researchers are closer than ever to having a first draft of a complete sequence of the genome of a Neanderthal woman who lived some 30,000 years ago, and this means it may one day be possible to create a living person from the DNA sequence. © 2010 PhysOrg.com More information: www.archaeology.org/1003/etc/neanderthals.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.
Citation: Research duo finds crayfish use deception to ward off other males (2012, March 15) retrieved 18 August 2019 from https://phys.org/news/2012-03-duo-crayfish-deception-ward-males.html (PhysOrg.com) — Because we’re so smart compared to other species that live on this planet, people tend to ascribe certain abilities as innately human. One of these traits is the ability to lie or cheat. This is because doing so seems to imply a high order of intelligence. Unfortunately, as with many other traits that have once been thought uniquely human, lying, or bluffing appears to occur in other species as well, or at least in one, the lowly male crayfish. In a recent study, Michael Angilletta from Arizona State University and Robbie Wilson of the University of Queensland, found that male crayfish use claw size to bluff their way out of fights with other males. They have published their observations in the Royal Society journal, Biology Letters. Journal information: Biology Letters 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 Journal information: Proceedings of the National Academy of Sciences Citation: Express yourself: Scientists use genetic algorithm to design self-assembling ssDNA-grafted particles (2013, November 27) retrieved 18 August 2019 from https://phys.org/news/2013-11-scientists-genetic-algorithm-self-assembling-ssdna-grafted.html Using genetic algorithms to discover new nanostructured materials More information: Designing DNA-grafted particles that self-assemble into desired crystalline structures using the genetic algorithm, PNAS November 12, 2013 vol. 110 no. 46 18431-18435, doi:10.1073/pnas.1316533110Related: 1Nanoparticle Superlattice Engineering with DNA, Science 14 October 2011: Vol. 334 no. 6053 pp. 204-208, doi:10.1126/science.1210493 Srinivasan, the paper’s other co-author, acknowledges that currently the forward CCM model used in the GA framework has certain limitations. “It assumes complete DNA hybridization within the contact areas between two DNA-grafted particles as being the driving force behind self-assembly,” he explains. “In essence, this restricts the analysis to purely attractive interaction effects. To provide a more complete enthalpic picture, we plan on building repulsive interactions between the non-complementary ssDNA linkers on the nanoparticles.” Enthalpy is a measure of the total energy of a thermodynamic system. “Furthermore,” Srinivasan continues, “entropy also provides a constraint on the actual number of hybridized linkers within the nanoparticle interaction area, as well as a cost on the configuration of particles within the lattice – both of which are currently being built into the model. In addition, the current CCM does not always uniquely define a crystal structure.” For example, he illustrates, the CCM cannot distinguish between the structures of CuAu (a copper/gold alloy) and CsCl (cesium chloride), since in the unit cell both crystals have the same number of nearest neighbors and particle distribution. “This gives rise to degeneracies that we plan to address by further refining the interaction types within a crystal lattice.”
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. Magnified silver nanowire. Credit: 3M © 2013 Phys.org More information: news.3m.com/press-release/comp … re-film-touch-screen Explore further (Phys.org) —3M has announced a joint venture with Cambrios Technologies, a nanotechnology company, to produce a new line of touch sensitive screens based on silver nanowire ink developed by Cambrios. The announcement marks a move by 3M into nanowire based technology for touchscreen displays and away from the traditional indium tin oxide design. Copper nanowire films could lower touch screen, LED and solar cell costs Citation: 3M teams with Cambrios to produce silver nanowire ink for touch displays (2013, December 24) retrieved 18 August 2019 from https://phys.org/news/2013-12-3m-teams-cambrios-silver-nanowire.html Silver nanowire ink is, as its name implies, is a type of ink made out of nanowires—a nanowire is an elongated structure with a diameter on the order of a single nanometer. Thus, the ink that is made is a mixture of combined nanowires (and other materials)—and because they are made of silver in this instance, are highly conductive. Using them as an ink to cover a screen allows for creating a touch surface that doesn’t rely on other sensors to discriminate location—that makes them more easily used in a wider variety of applications.In the announcement, the two companies report that they will be jointly developing three types of screens based on silver nanowire technology, metal mesh and ITO sensor film. 3M also announced plans to ramp up production of touch screen manufacturing capacity over the next year to incorporate the new silver nanowire based screens.The new screens will be made using conductive silver nanowire ink which is patterned using a polyester base. The nanowire ink, the two firms report, is particularly transparent, has very good clarity and very little haze, making it ideal for devices that require a high degree of sharp, clear images. Also, screen resistance can be customized to suit the specifications of individual vendors which allows for varying response times.Also noted is that the new screens can be used for both small devices such as phones and tablets and large ones, such as big (touch) screen TVs—they can also be used in applications that require round surfaces or conformity to angles, giving them an edge over tin oxide designs.The announcement of an agreement between behemoth 3M and the much smaller Cambrios also suggests that the huge corporations is no longer content to wait for breakthroughs in its own lab and is now willing to forge partnerships with other smaller companies to develop leading edge touch-screen technology.
Scientists have known for some time that stem cells respond to their environment as they grow—those grown on hard material, such as glass or metal for example, are more amenable to growing into bone cells. In this new effort, the researchers sought to discover if changes to a stem cell brought about by environment are retained if the stem cell is moved to a different environment.To find out, the researchers used mesenchymal cells which are known to be able to grow into almost any human body part. They placed the stem cells on a stiff substrate then moved them to one less stiff over differing numbers of days. In so doing, they found that the longer the cells were left on the stiff substrate the more a protein connected to bone growth (RUNX2) was expressed. Conversely, cells that were first placed on a soft surface and subsequently moved to a hard surface demonstrated a tendency to develop either bone or adipogenic tendencies. In another experiment, the researchers applied the stem cells to a substrate coated with a phototunable hydrogel—it grows softer when exposed to light—using it allowed for changing the stiffness of the substrate without having to move the cells. Using this approach the team found that if the cells were allowed to grow on the gel in its stiff state, for just one day, switching to a soft state caused the expression of RUNX2 to cease immediately. When they allowed the cells to grow for ten days on the stiff base, however, before switching to a soft one, expression of RUNX2 continued for another ten days before finally ceasing. This shows, the researchers contend, that stem cells have a memory component that is not yet understood.The researchers note that their findings could be applied to other stem cell research areas such as cases where unintentional consequences may be arising in experiments due to the stiffness of the substrate in which they are being grown. It also raises the question of whether other environmental factors might be impacting cell growth and if so, if they have a memory component as well. (Phys.org) —A team of researchers working at the University of Colorado has found that human stem cells appear to remember the physical nature of the structure they were grown on, after being moved to a different substrate. In their paper published in the journal Nature Materials, the researchers describe how they grew human stem cells on different substrates. In so doing, they discovered that the stem cells continued to express certain proteins related to a substrate even after its hardness was changed. Journal information: Nature Materials Mesenchymal stem cell displaying typical ultrastructural characteristics. Credit: Robert M. Hunt/Wikipedia More information: Mechanical memory and dosing influence stem cell fate, Nature Materials (2014) DOI: 10.1038/nmat3889AbstractWe investigated whether stem cells remember past physical signals and whether these can be exploited to dose cells mechanically. We found that the activation of the Yes-associated protein (YAP) and transcriptional coactivator with PDZ-binding domain (TAZ) as well as the pre-osteogenic transcription factor RUNX2 in human mesenchymal stem cells (hMSCs) cultured on soft poly(ethylene glycol) (PEG) hydrogels (Young’s modulus E ~ 2 kPa) depended on previous culture time on stiff tissue culture polystyrene (TCPS; E ~ 3 GPa). In addition, mechanical dosing of hMSCs cultured on initially stiff (E ~ 10 kPa) and then soft (E ~ 2 kPa) phototunable PEG hydrogels resulted in either reversible or—above a threshold mechanical dose—irreversible activation of YAP/TAZ and RUNX2. We also found that increased mechanical dosing on supraphysiologically stiff TCPS biases hMSCs towards osteogenic differentiation. We conclude that stem cells possess mechanical memory—with YAP/TAZ acting as an intracellular mechanical rheostat—that stores information from past physical environments and influences the cells’ fate. 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.
Delhi opened up her heart to Sri Lanka with an exhibition celebrating the arts and crafts from the the neighbour. One of Dilli Haat’s corners transformed into an interesting mix and match of various artifacts ranging from colourful toys to ceramic cups and some exquisite wood work. There were cane bags that were rather interesting alongside some simple crochet tops that are perfect for the beach when teamed up with stark colours. Beiges and whites dominated the clothes on display and were attractive in the sheer simplicity of cuts and designs. Sometimes simple really goes a long way. Also Read – ‘Playing Jojo was emotionally exhausting’The exhibition also had a stall of Sri Lankan silver jewellery that were rather eye catching in their details. There were rings with semi precious stones and some stunning earrings and pendants on sale. The prices started convenienty from Rs 300 for the small earrings. The exhibition also had a colourful collection of toys for children and delighful mobiles made of wooden fish and turtles. Elephants seemed to be an important part of the toys section with some adorable wooden renditions of the pachyderm. Also Read – Leslie doing new comedy special with NetflixArt work made of wood was also another star in the show. There were stunning pieces of art work made with different colours of wood. The effect of different textures and colours were stunning as they played up regular art motifs. Ceramic cups, salt and pepper shakers and other ceramic kitchenware were an integral part of the exhibition as well. The designs and colours were simple and soothing to the eye. The best part however, without a doubt, were the stunning masks that were up for sale. In various sizes and exquisite detail and colour, these Sri Lankan masks can light up any wall. Available in a varity of sizes, ranging from anything between Rs 10,00 (and counting) to Rs 500 – the masks grabbed the spotlight in the exhibition.
The students had a gala time participating and performing in various event. Competitions of the day were Nupur – The Indian classical dance competition, Bardoratory – The Shakespeare’s soliloquy competition, Munadi – The Hindi street play competition, Create From Waste and Euphonie – The western music competition (Solo and Group).There were 12 participants in Nupur, which had performances ranging from Kathak to Bharatnatyam to Odissi, showcasing the diversity of our cultural heritage. The first prize was won by Kriti from Gargi College, who performed a Bharatnatyam piece. On the other hand, Bardoratory, where participants had to make innovative use of props of their own choice and were judged on the seamlessness of the incorporation of their props in the performances. The first prize was won by Nidhi Sakarwal of Keshav Mahavidyalaya, who performed a soliloquy of Lady Macbeth, from Shakespeare’s Also Read – ‘Playing Jojo was emotionally exhausting’Macbeth.Euphonie, which saw the participation of over 20 contestants and colleges and the first prize for Solo vocals, was won by Hanita from College of Business Studies. The prize for the group song was also won by College of Business Studies, who performed a medley of Michael Jackson songs. Create From Waste had 32 participants, who showcased their creativity by turning dry garbage into decorative objects. The first prize winner was Lipakshi from Jaanki Devi Memorial College. Also Read – Leslie doing new comedy special with NetflixJabberwocky- Turncoat debate (English), which was held on the first day and saw enthusiastic participation of 18 contestants. The first prize was won by Rahul Ghoshi of SGTB Khalsa, who spoke about the topic- ‘Delhi Election has changed the Face of Contemporary Politics’. Footloose saw participation of teams from IIT Delhi, IP University as well as colleges from University of Delhi. In a highly competitive session which saw over 20 teams compete, the first prize was won by The Jesus and Mary College Team.
One and all can head on to Visual Art Gallery to witness the annual event of Ragini Arts The Contemporary Walk. This walk provides an insight into the oncoming activities of the gallery. The event showcases contemporary artworks of Indian artists- Suchit Sahni, Dhanur Goyal, Nisha Sharma, Subhash Pujahari, Asurvedh, Jagadish Chinthala, Ravi Gossain, Vishakha Apte among others. The works of Ravinder Dutt are inspired by miniatures and in a virtual space creates his own contemporary take on history. His art works emerge from detailed study of Indian history and traditional Indian art. Also Read – ‘Playing Jojo was emotionally exhausting’Works from artists such as Ravi Gossain and Nisha Sharma provide a scale that creates shock and awe. Soft lyrical abstracts from Vishakha Apte provide meditative serenity. Suchit Sahni, Rohit Sharma and Jagadish Chinthale’s works are all inspired by the urbane environment and the vibrant colours they use add to the quirkiness of their subject. Next to these are spontaneous pen and ink doodles by Dhanur Goyal whose experimental style creates layered subjects and great textures.When: 18 – 22 April Where: Visual Art Gallery, India Habitat Centre
Since the beginning of time, art has acquired various forms. To some, it appears mundane, while to the discerning eye, it is a celebration of life and a channel for expression of the artist’s creative endeavours.For the renowned Delhi-based architect and artist Rohit Raj Mehndiratta, art is an exploration into unknown areas which allow him to express himself with unfettered freedom. The artist looks beyond the tangible, to extract the infinite out of the finite, though others may see these as weird shapes smeared together. Also Read – Add new books to your shelfHis first solo art exhibition in the capital titled “(Un) Fettered” opens at the Alliance Française de Delhi today evening and will then open to the public from 27 to 30 August from 11.00 am to 8.00 pm. Rohit Raj said, “I am trying to capture the inner reality – it has no spatial limit or concept of time. It is constantly shifting from moment to moment and at the same time urges the consciousness to find stability in the outside, the ‘other’ space. I am playing with this dichotomy in my art: marking moments and their spiritual intensity.” Also Read – Over 2 hours screen time daily will make your kids impulsive(Un) Fettered represents the artist’s desire to give form to these inner-landscapes, their co-existence and conflict with the external world and to critique the idea of the timelessness of one’s inner reality. Raj plays with the concept of space inside oneself, its constant state of motion as it moves, moulds, fuses and contorts. He seeks to “(un) fetter” this space by representing moments of time. By doing this, he brings the spiritual and emotional, both conflating together, into the artistic realm, to be experienced by the viewer, in their moment of time. Thus, the artist urges consciousness to find stability in the outside – or the ‘other’ space through the inner realm. By playing with this dichotomy, through various artistic means, he captures the spatial intensity of moments – otherwise confined to the inner realm. The mediums chosen vary from pen-ink, photomontages to acrylic on canvas. The process involves emotive moments that translate into intense sketching or pen and ink work. His work also revolves around photographing aspects of the physical realm that evokes the inside. He is currently a visiting faculty at the Sushant School of Architecture. His academic and research interests in the domain of visual urban representations and politics of urban development have led to a photographic exhibition called ‘Placed Settings’ in New York, where he explored the idea of identity and the city through photography paper presentations in a number of international conferences and published paper in Sarai Reader 09. He recently co-edited a monograph titled “The Structure: Works of Mahendra Raj” published by Park Books, Zurich.