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thinkahol *

Laser, electric fields combined for new 'lab-on-chip' technologies | KurzweilAI - 0 views

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    Researchers from Purdue University and colleagues are developing new technologies that combine a laser and electric fields to manipulate fluids and tiny particles such as bacteria, viruses, and DNA molecules for a wide range of potential applications, including medical diagnostics, testing food and water, crime-scene forensics, and pharmaceutical manufacturing.. This "hybrid optoelectric manipulation in microfluidics" technology could allow for innovative sensors and analytical devices for "lab-on-a-chip" applications, or miniature instruments that perform measurements normally requiring large laboratory equipment, the researchers said. The technology works by first using a red laser to position a droplet on a platform specially fabricated at Purdue. Next, a highly focused infrared laser is used to heat the droplets, and then electric fields cause the heated liquid to circulate in a "microfluidic vortex." This vortex is used to isolate specific types of particles in the circulating liquid, like a micro centrifuge. Particle concentrations replicate the size, location and shape of the infrared laser pattern. The technology can also be used in nanomanufacturing because it shows promise for the assembly of suspended particles (colloids), the researchers said. Ref.: Steven T. Wereley, et al., Hybrid opto-electric manipulation in microfluidics-opportunities and challenges, Lab on a Chip, 2011; 11 (13): 2135 [DOI: 10.1039/C1LC20208A]
thinkahol *

Cloaking magnetic fields: First antimagnet developed - 0 views

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    ScienceDaily (Sep. 23, 2011) - Spanish researchers have designed what they believe to be a new type of magnetic cloak, which shields objects from external magnetic fields, while at the same time preventing any magnetic internal fields from leaking outside, making the cloak undetectable.
thinkahol *

Quantum Levitation - YouTube - 0 views

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    Video courtesy of Association of Science - Technology Centers (ASTC), representing the science centre and museum field worldwide. To learn more, visit http://www.astc.org/. Follow us on Twitter: @ScienceCenters. Tel-Aviv University demos quantum superconductors locked in a magnetic field (www.quantumlevitation.com).
Infogreen Global

Nonvolatile memory based on ferroelectric-graphene field-effect transistors - 0 views

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    The new device developed by the research team achieved impressive practical results, capable of symmetrical bit writing with a resistance ratio between the two resistance states of over 500% and reproducible nonvolatile switching over 100,000 cycles.
thinkahol *

The highest-resolution immersive visualization facility ever built | KurzweilAI - 1 views

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    in response to comments the Editor comments: "Good points. Main benefit is a highly interactive shared exploration/discussion/planning space (and PR value), but that same functionality, including the 1.5 Gpix display (an interactive version), could be achieved in theory with an enhanced* Oculus RIFT (http://www.kurzweilai.net/why-immersive-virtual-reality-is-the-next-generation-of-gaming-part-2 and http://www.oculusvr.com/ ) with an MMORPG architecture and Kinect/Leap control in an Oblong-type shared environment (http://www.kurzweilai.net/minority-report-arrives-with-oblong-part-ii-mind-blowing-ui) at lower cost and not restricted to one room - in fact, feasible globally via machine translation (http://www.kurzweilai.net/speech-recognition-breakthrough-for-the-spoken-translated-word) and local clones of the imagery and darknet shared DB (access to Internet2 via 100 Gbps lines would also be nice). Extra points for automated POV display based on head, eye, hand, and body-motion tracking and automated EEG-based control and double points for automated mind reading (http://www.kurzweilai.net/neuroscience-the-mind-reader) tied to an NLP/semantic web DB. * "Imagine an HMD with a massive field of view and more pixels than 1080p per eye, wireless PC link, built-in absolute head and hand/weapon/wand positioning, and native integration with some (if not all) of the major game engines, all for less than $1,000 USD," Palmer says. "That can happen in 2013!" (http://www.kurzweilai.net/why-immersive-virtual-reality-is-the-next-generation-of-gaming-part-2)"
Aman Khani

OTT Video Platform: Changing the Face of Digital Media - 0 views

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    With the advancement of technology, there has been an immense success in the field of television broadcasting & internet technology.
Infogreen Global

Metamaterials Boosts Electromagnetism Safely - 0 views

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    In the magnetic levitation train example, conventional electromagnets could be supplemented by a metamaterial, which would have been designed to produce significantly higher intensities of magnetic fields using the same amount of electricity.
thinkahol *

Study predicts nanoscience will greatly increase efficiency of next-generation solar cells - 0 views

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    "As the fastest growing energy technology in the world, solar energy continues to account for more and more of the world's energy supply. Currently, most commercial photovoltaic power comes from bulk semiconductor materials. But in the past few years, scientists have been investigating how semiconductor nanostructures can increase the efficiency of solar cells and the newer field of solar fuels. "
thinkahol *

Benoît Mandelbrot, Novel Mathematician, Dies at 85 - Obituary (Obit) - NYTime... - 0 views

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    Dr. Mandelbrot, a maverick mathematician, developed an innovative theory to study uneven shapes and applied it to physics, biology and many other fields.
Todd Suomela

PLoS Biology - Timing the Brain: Mental Chronometry as a Tool in Neuroscience - 0 views

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    How do we relate human thought processes to measurable events in the brain? Mental chronometry, which has origins that date back more than a century, seeks to measure the time course of mental operations in the human nervous system [1]. From the late 1800s until 1950, the field was built almost entirely around a single method: measuring and comparing people's reaction times during simple cognitive tasks.
Todd Suomela

TPM: The Philosophers' Magazine | Philosophy as complementary science - 1 views

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    "Let me now express my position more clearly and systemically: philosophy of science can seek to generate scientific knowledge in places where science itself fails to do so; I call this the complementary function of philosophy of science, as opposed to its descriptive and prescriptive functions. I propose taking the philosophy of science as a field which investigates scientific questions that are not addressed in current specialist science - questions that could be addressed by scientists, but are excluded due to the necessities of specialization."
thinkahol *

How to draw pictures in midair | KurzweilAI - 0 views

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    A unique optical multitouch sensing technology using infrared sensors has been developed by researchers at the Interface Ecology Lab at Texas A&M University. ZeroTouch allows users to literally draw pictures in midair. It provides zero-force, zero-thickness, high-frame-rate, high-resolution, transparent multitouch sensing. ZeroTouch's new forms of free-air interaction are more precise than the Microsoft Kinect, the researchers said. ZeroTouch was demonstrated at the recent ACM Conference on Human Factors in Computing Systems in Vancouver, B.C. Ref: Moeller, J. and Kerne, A., ZeroTouch: A Zero-Thickness Optical Multi-Touch Force Field, CHI 2011 Ref: Moeller, J., Lupfer, N., Hamilton, B., Lin, H., Kerne, A., intangibleCanvas: Free-Air Finger Painting on a Projected Canvas, CHI 
thinkahol *

Why some genes are silenced: Researchers find clue as to how notes are played on the 'g... - 0 views

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    ScienceDaily (May 13, 2011) - Japanese and U.S. scientists in the young field of epigenetics have reported a rationale as to how specific genes are silenced and others are not. Because this effect can be reversed, it may be possible to devise therapies for cancer and other diseases using this information.
thinkahol *

Light propagation controlled in photonic chips: Major breakthrough in telecommunication... - 0 views

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    ScienceDaily (July 11, 2011) - Researchers at Columbia Engineering School have built optical nanostructures that enable them to engineer the index of refraction and fully control light dispersion.
melvinahebert

Best Demat Account For Small Investors | TechQY - 0 views

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    Full-service brokers with extensive technical proficiency and support, such as Kotak Securities, is highly recommended for beginners. This is because of their expertise and years of guidance in the field of trading that can provide you with immense knowledge and customer service in your trading journey. Let us look into the parameters and factors to help you decide the best Demat account for your investment.
techinstro com

Description and Specification of Graphene - 0 views

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    Graphene is a single-atom-thick sheet made from combined carbon atoms. The carbon atoms are bonded together to share electron in a hexagonal, honeycomb-like structure. It is a single atom thick layered 2D material ever discovered in the world. It is made up of a hexagonal lattice pattern of carbon atoms in a monolithic honeycomb-like structure. It is a layer of SP2 single bonded carbon atoms arranged like a chicken wire mesh. It is 200 times stronger than stainless steel (SS) and 100 thousand times thinner than the human hair. It is the slimmest and strongest compound available on the earth. Anybody would be amazed when they know that we have found a material which is harder than diamond, yet lightweight, stronger than steel, but also highly flexible, and this material can be mined from the earth as it occurs naturally. It is yet thin enough to be mistaken for a saran wrap. Apart from the optimum physical properties, the other features are also impressive. Properties of Graphene These are some prominent features which make it a hi-tech material: Excellent Electronic Conductor Chief electronic property makes it an efficient Zero-Overlap Semi metal and gives it sufficient electrical conductivity. Carbon atoms possess typically 2 electrons in the inner shell, and 4 electrons in the outer orbit, total 6 electrons. Although conventionally, the outer 4 electrons in carbon can connect with another atom, each, the atoms can form a 2-dimensional bond with three atoms per single atom. This leaves an electron available for electronic conduction. Such electrons are known as 'Pi' electrons and found above and below in sheet. Ultimate Tensile Strength Mechanical strength is another prominent property of the material. It considered as being the foremost most robust material ever discovered, owing to the 0.142 Nm-long carbon bonds. It also possesses ultimate tensile strength, measuring 130 Gigapascals (or 130,000,000,000 Pascals). Compared to the tensile strength of industr
veera90

The Role of Embedded Systems in Driving the Transformation | Blog | ACL Digital - 0 views

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    Today's world is witnessing a growing trend toward digitization, connectivity, and automation. However, the driving force behind this transformation, which is often overlooked, is embedded systems technology. Embedded systems are crucial to modern life and play a significant role in various aspects. As science and technology continue to advance, the potential applications of embedded systems are expanding rapidly. Embedded software is widely used in various fields, such as defense instruments, railroad networks, telecommunications, electronic payments, consumer electronics, and more. The usage of electronic devices is also quickly increasing in the present day.
Infogreen Global

Antihydrogen Atoms Stored for the First Time - 0 views

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    Large quantities of antihydrogen atoms were first made at CERN eight years ago by two other teams. Although they made antimatter they couldn't store it, because the anti-atoms touched the ordinary-matter walls of the experiments within millionths of a second after forming and were instantly annihilated-completely destroyed by conversion to energy and other particles.
Todd Suomela

Human Computer Interaction (HCI) by John M. Carroll - Interaction-Design.org: HCI, Usab... - 0 views

  • The challenge of personal computing became manifest at an opportune time. The broad project of cognitive science, which incorporated cognitive psychology, artificial intelligence, linguistics, cognitive anthropology, and the philosophy of mind, had formed at the end of the 1970s. Part of the programme of cognitive science was to articulate systematic and scientifically-informed applications to be known as "cognitive engineering". Thus, at just the point when personal computing presented the practical need for HCI, cognitive science presented people, concepts, skills, and a vision for addressing such needs. HCI was one of the first examples of cognitive engineering. Other historically fortuitous developments contributed to establishment of HCI. Software engineering, mired in unmanageable software complexity in the 1970s, was starting to focus on nonfunctional requirements, including usability and maintainability, and on non-linear software development processes that relied heavily on testing. Computer graphics and information retrieval had emerged in the 1970s, and rapidly came to recognize that interactive systems were the key to progressing beyond early achievements. All these threads of development in computer science pointed to the same conclusion: The way forward for computing entailed understanding and better empowering users.
  • One of the most significant achievements of HCI is its evolving model of the integration of science and practice. Initially this model was articulated as a reciprocal relation between cognitive science and cognitive engineering. Later, it ambitiously incorporated a diverse science foundation, notably Activity Theory, distributed cognition, and ethnomethodology, and a culturally embedded conception of human activity, including the activities of design and technology development. Currently, the model is incorporating design practices and research across a broad spectrum. In these developments, HCI provides a blueprint for a mutual relation between science and practice that is unprecedented.
  • In the latter 1980s and early 1990s, HCI assimilated ideas from Activity Theory, distributed cognition, and ethnomethodology. This comprised a fundamental epistemological realignment. For example, the representational theory of mind, a cornerstone of cognitive science, is no longer axiomatic for HCI science. Information processing psychology and laboratory user studies, once the kernel of HCI research, became important, but niche areas. The most canonical theory-base in HCI now is socio-cultural, Activity Theory. Field studies became typical, and eventually dominant as an empirical paradigm. Collaborative interactions, that is, groups of people working together through and around computer systems (in contrast to the early 1980s user-at-PC situation) have become the default unit of analysis. It is remarkable that such fundamental realignments were so easily assimilated by the HCI community.
Sergio Perez

SFT_preprint-EN_2_col.pdf - 0 views

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    Unification theory with no extra dimensions. The first part unifies the strong nuclear force with the gravitational force in a mathematical way; the quantum vacuum is treated as a deformable system by the strong nuclear force. The second part unifies the nuclear force with the quantum vacuum in a hypothetical structure; the quantum vacuum is treated as a supersymmetric and metastable system with properties related to the different types of particles' motion.
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