Fujitsu Introduces First 4Channel HDMI Connector Ports

first_imgFujitsu LTD – Embedded FRAM w/4-Channel HMDI Ports 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: Fujitsu Introduces First 4-Channel HDMI Connector Ports (2007, November 14) retrieved 18 August 2019 from https://phys.org/news/2007-11-fujitsu-channel-hdmi-connector-ports.html In a blink of an eye Fujitsu has solved the costly problem of having to have separate memory on each of the HDMI ports. Fujitsu has produced the first embedded FRAM for digital TV that allows simultaneous use of a 4-Channel HDMI connector ports. The HDMI connector ports are used for running DVD recorders, camcorders, video gaming consoles, that store high resolution data and are read by audio visual devices when used with digital televisions. In use the new Fujitsu LSI in digital TVs allows high-speed factory programming of Expanded Display Identification display data. This breakthrough provides a cost saving in the overall production by reducing the number of the parts and reducing mounting space. In practice the evolution in HDMI, a digital multi-media interface has created high-quality video and audio output. The HDMI connector when used allows devices that create output to read the display data, like the display resolution and then automatically adjusts their output to produce the best display. The memory function for display devices which need four EPROM cells can now be handled by one cell. The key specifications are a memory capacity of 256-byte. The interface is DDC 4-Channel. The package is TSSOP 16-pin. The key savings besides parts and space is the reduced labor costs involved in the factory programming process. In turn this will potentially reduce the costs of producing digital televisions. Fujitsu is a leader in the field of IT and communication solutions headquartered in Tokyo, Japan with offices around the world. Fujitsu plans to demonstrate and show the innovation named MB85RF402 at the Embedded Technology Trade Show on November 14-17, 2007 in Yokohama, Japan. It is currently available for sample shipments and has a million unit per month sales target. Fujitsu has introduced the world´s first embedded FRAM for digital TVs that allow simultaneous use of a 4-Channel HDMI connector ports. The innovation will reduce the number of pars, mounting space and programming labor costs. It is expected to reduce the costs of digital TVs. New HDMI Chip Enables High Definition Display of Standard Definition Video Content and Digital Photos on HDTV Explore furtherlast_img read more

Crystals take a chill pill A thermomechanical theory of lowtemperature melting

first_img Copyright 2012 Phys.org All rights reserved. This material may not be published, broadcast, rewritten or redistributed in whole or part without the express written permission of PhysOrg.com. (Phys.org) — Virtual melting is a phase transition phenomenon associated with solid-solid phase transformation and relaxation of nonhydrostatic stresses and other effects in HMX explosives, as well as with crystal-crystal and crystal-amorphous phase transformation under high pressure. Since its initial formulation by Iowa State University Professor Valery I. Levitas and coworkers, virtual melting has been estimated to occur at 100 – 1000 °K below the material’s equilibrium melt temperature. Recently, however, Levitas and University of Texas Associate Professor Ramon Ravelo proposed a new deformation mechanism on which melting can occur at temperatures 4000 °K lower than the equilibrium melt temperature in materials subjected to high deviatoric stresses (where stress components vary by direction, and which control the degree of body distortion) in a shock wave. In addition, they’ve developed a novel thermomechanical theory of melting that predicts extremely large reduction in melting temperature. 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. Their next step, Levitas explains, was determining material parameters for a developed theory and application it to the specific melting process: While thermodynamic theory is quite universal and is applicable to any material, for some materials and loading conditions reduction in melting temperature can be small and for others very large. “This study was done through our synergistic collaboration: Ramon gave me parameters determined from his atomistic simulations for loading of copper and aluminum in several directions. “I then made thermodynamic predictions of the reduction in melting temperature for these specific materials.”There were also significant challenges in confirming virtual melting by large-scale molecular dynamics simulations. “Thermodynamic theory predicted how much melting temperature can be reduced due to uniaxial versus hydrostatic loading” Levitas explains. “For very high pressure this reduction was drastic: about 10,000 °K. The thermodynamic approach has important advantages in that it’s universal – for example, it’s not limited to specific materials and atomic structure. However, thermodynamics never says that some process will occur, but only that it can occur – that it’s thermodynamically admissible.”In contrast, Levitas notes, molecular dynamics simulations are performed for a specific material and atomic structure and interaction, but they reproduce all actual physical processes. “It may happen that while melting is possible from the thermodynamic point of view, it does not occur due to kinetic reasons or because other processes – such as dislocation plasticity or twinning – more rapidly release elastic stresses. Thus, one of the challenges in molecular dynamics simulations was to conceptually prove the existence of the virtual melting, which was done for the first time. Another challenge was to prove that the observed disordered state is indeed melt rather than an amorphous solid. Next, we had to investigate which parameters promote the melting, how actual melting temperature depends on them, and identify the lowest melting temperature.” Addressing these challenges required a range of insights, innovations and techniques. “I believe that the main insights and innovations were in our development of a combined thermodynamic and molecular dynamics approach, as well as in the proof of virtual melting existing in a shock wave several thousand degrees Kelvin below the melting temperature,” Levitas says. “Also, our results further support the idea that the virtual melting is a general phenomenon with various realizations.” While they previously suggested virtual melting as the mechanism of crystal-crystal phase transformation, amorphization and sublimation, here the scientists found that it also can serve as a mechanism of plastic deformation. “Lastly, since the thermodynamic features of the virtual melting here and in previous papers on phase transformations are quite similar, our first molecular dynamics confirmation of the virtual melting indirectly supports the plausibility of the virtual melting as an intermediate stage for phase transformations.”Levitas outlines how their findings impact nuclear explosions, meteorite impacts, and planned experiments in large laser facilities. “Virtual melting can compete with traditional mechanisms of plastic flow only at very high strain rates. Such conditions can be satisfied during nuclear explosions and meteorite impacts, which is why our results may be utilized for simulation of these phenomena.” Introducing new and completely unexpected deformation mechanisms, he adds, may also lead to essential progress in their understanding and predictive modeling.“The importance of such high strain rate regimes,” Levitas continues, “is supported by the fact that several laboratories around the world are now developing corresponding facilities for their experimental studies – and our results may find experimental confirmation in such studies. Finally,” Levitas notes, “due to the complexity of interpreting experimental results under such extreme conditions, it’s always good to have an idea about which phenomena could be found – and our virtual melting process is one of them.’Levitas also describes other areas of research and technology that might benefit from their findings. “In the current paper, virtual melting was conceptually confirmed by molecular dynamics simulations for the most unexpected case of metals, like copper and aluminum.” In these metals, traditional plasticity is very pronounced, which is why extremely high strain rates are required to activate an alternative mechanism like virtual melting. Since thermodynamic consideration is quite generic, this mechanism is expected in many other materials. “For materials with suppressed plasticity – for example, ceramics, high-strength alloys, or complex organic compounds – much lower strain rates may be required,” Levitas points out. “Then the virtual melting may play part in more traditional high-strain rate fields, like penetration of the projectile in a target in armor ceramic, propagation of shock waves, behavior of explosive materials, and deformation in shear bands.”Regarding next steps in their research, notes Levitas, “We plan to extend our thermodynamic approach for arbitrary 3D loading – in particular for deformation under high pressure and shear strains. It can also be extended for amorphization and sublimation, which can be considered as mechanisms of stress relaxation. Applying a phase field approach to the phenomena discussed is another important task. Finally,” Levitas concludes, “in molecular dynamic simulations we’ll study polycrystalline metals and materials with suppressed plasticity.” Explore further Spatial configuration can spark deja vu, psychology study reveals More information: Virtual melting as a new mechanism of stress relaxation under high strain rate loading, PNAS August 14, 2012 vol. 109 no. 33 13204-13207, doi:10.1073/pnas.1203285109 Levitas and Ravelo began their investigation when Levitas gave a talk on virtual melting in 2005 at Los Alamos National Laboratory, and there met Ravelo. “Ramon was very critical and asked a lot of questions,” Levitas recounts to Phys.org. “He noted that in atomistic simulations of shock wave propagation in defect-free crystals, it had been observed that disordering occurred at the shock front at temperatures much below the melt temperature at the corresponding shock pressure along some directions – but along others, melting occurred at or above the melting temperature.” Moreover, Levitas adds, it was common wisdom at the time that amorphization occurs due to the high stresses generated at the shock front. “This led us to ask, is the pre-melting observed in atomistic simulations due to mechanical instabilities, such as strain-induced amorphization, which are not related to melting? Or it is indeed virtual melting? Which loading parameters control the melting? What is the lowest temperature at which melting can occur? These were tough questions,” Levitas acknowledges, “and we then started our collaboration, which after seven years has resulted in the current paper.”Levitas relates the main challenges they faced. “I needed to develop a thermodynamic theory of melting under uniaxial straining typical for shock waves.” At the time, known theories for melting under nonhydrostatic conditions – that is, when loading is different in different directions – considered thermodynamic equilibrium to be between melt and nonhydrostatically stressed solid. Reduction in melting temperature due to nonhydrostatic stresses was estimated to be just 1 °K. “This definitely did not sound promising,” Levitas continues. “In contrast, melting in our case represents a deformation process and thermodynamic theory for processes was not developed. I did my best to develop a general formal theory and apply it to the specific processes, which Ramon observed in molecular dynamics simulations. “Since Ramon and I have different backgrounds and consider phenomena from completely different positions, one of the most challenging problems was to understand each other and to make our concepts consistent. A few times I misunderstood how Ramon verbally describes results of atomistic simulations, and developed a theory for the wrong scenarios. For example,” Levitas illustrates, “one time I used wrong the video player to play his movie with atomistic simulations and mistakenly observed that melting occurs at the surface of the sample only. I found this very exciting and developed a theory for this scenario, since it sounds reasonable that if uniaxially loaded sample melts along all the surfaces, it would become hydrostatically loaded and further melting would be impossible.” (A) Atomic configuration of Cu slab shocked to a pressure of 160 GPa (red atoms are solid, blue are liquid); (B and C) pressure and temperature profiles, respectively, along the shock direction. The temperature is normalized by the equilibrium melt temperature TmðpÞ at the corresponding shock pressure along the profile. Copyright © PNAS, doi:10.1073/pnas.1203285109 Citation: Crystals take a chill pill: A thermomechanical theory of low-temperature melting (2012, August 21) retrieved 18 August 2019 from https://phys.org/news/2012-08-crystals-chill-pill-thermomechanical-theory.html Journal information: Proceedings of the National Academy of Scienceslast_img read more

Scientists work out way to use pulsars to provide self navigation to

first_img(Phys.org) —A trio of German space scientists has worked out a way to use pulsars as navigation aids for space vehicles traveling in the solar system. As they describe in their paper uploaded to the preprint server arXiv, the method relies on reading information from at least three pulsars to triangulate location information. Artist’s impression of Rosetta, if it navigated in deep space using pulsar signals. The characteristic time signatures of pulsars are used as natural navigation beacons to determine the position and velocity of the spacecraft. Credit: arXiv:1305.4842 [astro-ph.HE] More information: Autonomous Spacecraft Navigation With Pulsars, arXiv:1305.4842 [astro-ph.HE] arxiv.org/abs/1305.4842AbstractAn external reference system suitable for deep space navigation can be defined by fast spinning and strongly magnetized neutron stars, called pulsars. Their beamed periodic signals have timing stabilities comparable to atomic clocks and provide characteristic temporal signatures that can be used as natural navigation beacons, quite similar to the use of GPS satellites for navigation on Earth. By comparing pulse arrival times measured on-board a spacecraft with predicted pulse arrivals at a reference location, the spacecraft position can be determined autonomously and with high accuracy everywhere in the solar system and beyond. The unique properties of pulsars make clear already today that such a navigation system will have its application in future astronautics. In this paper we describe the basic principle of spacecraft navigation using pulsars and report on the current development status of this novel technology.via ArxivBlog Journal information: arXiv Citation: Scientists work out way to use pulsars to provide self navigation to spacecraft in solar system (2013, May 24) retrieved 18 August 2019 from https://phys.org/news/2013-05-scientists-pulsars-spacecraft-solar.html The current method of navigation for spacecraft is to send radio waves back to Earth—scientists can calculate its distance by noting how long the radio waves take to reach them. Unfortunately, that doesn’t help to figure out its angular position. Generally, that’s not a problem, however, because of the vast distances between objects in the solar system—it’s likely to become more of an issue in the future, though, as space travel becomes more common. What’s needed, scientists say, is a way for spacecraft to keep tabs on their position without assistance from Earth. That’s what the team in Germany has done, using pulsars as guides.Pulsars are strongly magnetized neutron stars that spin very rapidly. Because they spin, they appear to blink or pulse, hence their name. Scientists have suggested over the years that it might be possible to use them as navigational aids, but until recently, the equipment necessary to read and interpret such signals has been far too bulky to put aboard a space craft. Also, limited knowledge about pulsars has constrained their usefulness. The team from Germany says progress in both areas has now been made to such an extent that it should be possible to put such equipment aboard a space probe capable of keeping track of its position to within 5km.Pulsars emit two kinds of signals that can be useful, radiation or x-rays. Both are emitted in cycles so precisely timed that they are comparable to atomic clocks. The researchers estimate a space vehicle reading pulsar radiation signals with 21 cm waves, for example, would require an antenna 150 square meters—that’s still too big for practical purpose. For that reason, the team suggests a better approach would be to listen for x-rays. Optics have progressed to the point, they say, that a mirror on a space vehicle capable of hearing and interpreting them would weigh just 25 kilograms, small enough for actual use. That would be good enough, they claim, to allow a spacecraft to triangulate its position to within 5km.center_img Dead stars could be the future of spacecraft navigation © 2013 Phys.org Explore further This document is subject to copyright. Apart from any fair dealing for the purpose of private study or research, no part may be reproduced without the written permission. The content is provided for information purposes only.last_img read more

Pentanuclear iron catalyst oxidizes water

first_imgCredit: Masaya Okamura et al. (Phys.org)—Plants are able to convert sunlight into energy through photosynthesis. There is much interest in designing a system that mimics the photosynthetic process as an environmentally friendly way to produce energy from sunlight. One of the key reactions in photosynthesis is oxidizing water so that it breaks apart into its components, molecular oxygen (O2) and protons (H+). This reaction is catalyzed by photosystem II. Explore further Research into a synthetic alternative to photosystem II has yielded catalysts that, while helpful, are not as practical for industrial use. The ideal catalyst would be cheap, robust, and reusable. Several researchers from various institutions in Japan have developed a pentanuclear iron catalyst that has many of these features. This catalyst has a turnover frequency of 1,900 s-1. Its five electrochemically active sites give it redox flexibility. Its adjacent active sites promote O-O bond formation and, thus, low activation energy. Their work appears in Nature.When water is oxidized it produces O2, H+ and four electrons. In nature, including in photosystem II, whenever multiple electrons are involved in a redox process, it is better to have a catalyst that has multiple redox sites, or redox flexibility. In designing a pentanuclear iron catalyst, the authors thought it would have sufficient flexibility to promote electron exchange.A catalyst serves to lower the energy in the rate determining step. It is thought that the rate determining step in the oxidation of water is the formation of O-O bond. Masaya Okamura, et al. therefore included in their design a way to promote O-O bond formation. Indeed, quantum chemical studies demonstrated that when two oxygens bind to two of the core iron atoms, a transition state forms that results in the evolution of oxygen gas.Their pentanuclear complex is [FeII4FeIII(μ3-O)(μ-L)6]3+ where LH is 3,5-bis(2-pyridyl)pyrazole. Two iron atoms are coordinated to six atoms within the ligand structure while the three iron atoms within the core are coordinated to five atoms within the ligand stucture. Two of these core iron atoms are the active sites for the O-O bond formation.Electrochemical studies confirmed that the catalyst undergoes five sequentially occurring reversible one-electron redox reactions in which FeII converts to FeIII. Addition of water showed evidence of oxygen evolution which was then quantified using controlled potential electrolysis in a two-compartment cell separated by an anion-exchange membrane. Gas chromatography measured the amount of O2. The catalyst demonstrated a Faradaic efficiency of 96% based on a four electron process and proved to be highly stable.Electrochemical studies evidence a four-step one-electron oxidation cycle. Quantum chemical calculations of the system using density functional theory demonstrate a low energy barrier for the catalytic mechanism. Turnover frequency (TOF) was determined using the results of electrochemical measurements. The obtained TOF value was 1,900 s-1, which is 1,000 times greater than other reported iron-based catalysts.This experiment demonstrates an effective design for a catalyst that promotes the oxidation of water. However, before this catalyst can be truly practical at a larger scale, additional studies will need to work out how to lower the large overpotential (greater than 0.5 V) and change the medium from acetonitrile/water to purely water. More information: Masaya Okamura et al. A pentanuclear iron catalyst designed for water oxidation, Nature (2016). DOI: 10.1038/nature16529AbstractAlthough the oxidation of water is efficiently catalysed by the oxygen-evolving complex in photosystem II, it remains one of the main bottlenecks when aiming for synthetic chemical fuel production powered by sunlight or electricity. Consequently, the development of active and stable water oxidation catalysts is crucial, with heterogeneous systems considered more suitable for practical use and their homogeneous counterparts more suitable for targeted, molecular-level design guided by mechanistic understanding. Research into the mechanism of water oxidation has resulted in a range of synthetic molecular catalysts, yet there remains much interest in systems that use abundant, inexpensive and environmentally benign metals such as iron (the most abundant transition metal in the Earth’s crust and found in natural and synthetic oxidation catalysts). Water oxidation catalysts based on mononuclear iron complexes have been explored, but they often deactivate rapidly and exhibit relatively low activities. Here we report a pentanuclear iron complex that efficiently and robustly catalyses water oxidation with a turnover frequency of 1,900 per second, which is about three orders of magnitude larger than that of other iron-based catalysts. Electrochemical analysis confirms the redox flexibility of the system, characterized by six different oxidation states between FeII5 and FeIII5; the FeIII5 state is active for oxidizing water. Quantum chemistry calculations indicate that the presence of adjacent active sites facilitates O–O bond formation with a reaction barrier of less than ten kilocalories per mole. Although the need for a high overpotential and the inability to operate in water-rich solutions limit the practicality of the present system, our findings clearly indicate that efficient water oxidation catalysts based on iron complexes can be created by ensuring that the system has redox flexibility and contains adjacent water-activation sites. Citation: Pentanuclear iron catalyst oxidizes water (2016, February 24) retrieved 18 August 2019 from https://phys.org/news/2016-02-pentanuclear-iron-catalyst-oxidizes.htmlcenter_img Sophisticated enzyme-mimic enables efficient hydrogen production © 2016 Phys.org Journal information: Nature 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

Hydrogel 3D printing and patterning liquids with the capacitor edge effect PLEEC

first_img Journal information: Science Advances Hydrogels are three-dimensional (3-D) polymer networks that can retain large quantities of water in their swollen states for wide applications in bioengineering and materials sciences. Advanced hydrogel fabrication techniques are in development to meet user-specified requirements with substantial constraints placed on the physical and chemical properties of hydrogel precursors and printed structures. In a recent study, Jikun Wang and co-workers at the State Key Lab for Strength and Vibration of Mechanical Structures, Department of Engineering Mechanics, in China, proposed a new method of patterning liquids with the capacitor edge effect (PLEEC). The results are now published in Science Advances. In the present work, Wang et al. proposed PLEEC (patterning liquids with the capacitor edge effect) to pattern liquids with different physical and chemical properties. The method can be applied to a variety of crosslinking mechanisms among multiple materials. The scientists used a capacitor that was asymmetric in design to allow the construction of a real 3-D object than mere 2-D patterns built within two electrodes. Based on the new method, Wang et al. built the 3-D printing system, to provide proof-of-concept printed hydrogel structures including a hydrogel scaffold, hydrogel composite and hydrogel ionic devices in the study. Explore further Printed hydrogel structures using the PLEEC system. (A) Scaffold-structured hydrogel lattice. (B and C) PAAm and PNIPAM hydrogel composites. When the polymerized hydrogel composite is placed in hot water, the PNIPAM hydrogel tends to shrink so that fingers roll up. (D) Stretchable LED belt. LEDs work well when the belt is stretched to double its length and suffers 100 loading cycles. (E) Soft display device. Each LED can be lit independently. Photo credit: Jikun Wang, Xi’an Jiaotong University. Credit: Science Advances, doi: 10.1126/sciadv.aau8769 The PLEEC panel proposed in the study contained five layers, where the top layer (Teflon film) acted as a hydrophobic, insulating cover to separate the liquid from the upper electrode. When the scientists applied an electric field, the edge effect generated an electrostatic force that trapped the liquid atop the hydrophobic layer. Using the principle, the scientists designed liquid patterns with different shapes and sizes. For instance, the trapped blue ink formed patterns of an Angry Bird and the letters XJTU. In addition, the scientists used an array of line pixels to control and trap liquid independently. Furthermore, in an array of 10 x 10 pixels, the scientists were able to form a variety of liquid patterns such as lines, squares and musical notes. With further developed circuit control technology, additional complex liquid patterns could be designed and controlled using PLEEC. In this way, Wang et al. proposed a new PLEEC panel design to generate complex liquid patterns and transferred the concept to build a 3-D printing system as demonstrated. The technology has several advantages and offers significant versatility compared to the existing methods of hydrogel 3-D printing. As a proof-of-concept, they used a wide variety of hydrogels with varying physical or chemical properties in the system and showed the possibility of using materials with varying viscosity, either bonded physically or chemically to construct structures of interest. Multiple hydrogel materials could also be easily patterned to form a variety of soft and hard, to active and passive hydrogel composites. They assembled the ionically conductive hydrogels in a single-step curing process for ease, demonstrating excellent integrity and bonding properties. The researchers aim to improve the precision of the technique in the future and optimize the 3-D printing PLEEC setup to streamline rapid prototyping. The optimized method will enable dynamic applications in tissue engineering such as artificial tissues, soft metamaterials in materials science, soft electronics and soft robotics. Researchers develop a hydrogel for enhanced cell encapsulation and delivery More information: Jikun Wang et al. Hydrogel 3D printing with the capacitor edge effect, Science Advances (2019). DOI: 10.1126/sciadv.aau8769David J. Beebe et al. Functional hydrogel structures for autonomous flow control inside microfluidic channels, Nature (2002). DOI: 10.1038/35007047 A. Sidorenko et al. Reversible Switching of Hydrogel-Actuated Nanostructures into Complex Micropatterns, Science (2007). DOI: 10.1126/science.1135516 Wang et al. polymerized the 2-D hydrogel precursor patterns and stacked them layer-by-layer to form a 3-D structure thereafter. In the experimental setup, the liquids flowed across the designed electrodes to form liquid patterns trapped by the electric field. A transparent curing platform then approached the liquid pattern to polymerize it in the plane of printing using UV light. The scientists determined the printing speed of the PLEEC method by deducing the time of liquid patterning, which was in the order of 101s and the time of polymerization in the order of 102 s, comparable to the DLP technique. Based on the PLEEC process, Wang et al. designed a complete PLEEC 3-D printing system with seven parts: a mechanical module, PLEEC panel, solution-adding unit, a curing platform, curing unit, power supply and a control module. The scientists used the solution adding holes in the setup to squeeze the hydrogel solutions onto the PLEEC panel and a UV lamp in the curing unit to complete the in-house printing system. They regulated the power supply using the control unit to provide a low voltage for mechanical movement of the module and higher voltage—as high as 3000 V at 1 kHz to the PLEEC panel. In turn, Wang et al. operated the control module using a central computer to send instructions to all units. Using the in-house printing system, the scientists then designed a hydrogel composite containing different percentages of PAAm and PNIPAM solutions, which they polymerized in the shape of a human hand, followed by triggered thermoresponsive behavior to form the finger gestures of “GOOD” and “OK.” The scientists also used the same experimental setup to engineer stretchable LED belts and soft display devices, where each LED in the system could be independently lit. Principle of PLEEC. An asymmetric capacitor is separated by a dielectric layer. Credit: Science Advances, doi: 10.1126/sciadv.aau8769 Using the new patterning method, Wang et al. accomplished a resolution of 100 µm, while also allowing them to establish a complete 3-D printing system that combined patterning and stacking processes. The technique can be applied to a wide variety of hydrogels to overcome existing limits. In the work, the scientists demonstrated printed hydrogel structures including a hydrogel scaffold, a thermoresponsive hydrogel composite and an ionic high-integrity hydrogel display device. The proposed technique can offer rapid prototyping hydrogel devices with multiple compositions and complex geometries. Additive manufacture or 3-D printing is an effective tool to engineer highly structured, interconnected and porous architectures compared to conventional methods of casting, photomasking and electrospinning. Researchers have previously used 3-D printing to create highly porous hydrogel scaffolds for cell cultures, as biomimetic microchips to study disease, build artificial heterogeneous tissues in regenerative medicine and as biocompatible organs with high geometric precision. 3-D hydrogels are also used to build conductive composites for soft robotics. In particular, computer-aided design (CAD) in 3-D printing is suited to build highly programmed and user-specified hydrogel structures for applications in tissue engineering. Previously established methods for hydrogel printing conventionally include digital projection lithography (DLP), stereolithography (SLA) and direct ink writing (DIW). However, such methods are limited to patterning with photopolymerizable hydrogel precursors only. Similarly, in the DIW-printing method, hydrogel precursors are water-like and difficult to deposit unless their viscosity is increased with nanoclays, affecting the processing technique. Electric fields are another technique that have been used to control liquids via electrowetting, dielectrophoresis and lithography induced self-assembly. Although the techniques can control single droplets between electrodes for applications in cell culture, patterned wettability, microfluidics and patterning electronics, electric fields can only manipulate a single droplet at a time. As a result, the technique lacks massive-scale control of liquid droplets, with difficulty of their use in 3-D printing. Left: Hydrogel 3D printing process with PLEEC. (A and B) Patterning process. When liquids flow over the designed electrode, the liquid patterns are trapped by the electric field. (C) Polymerization process. The curing platform moves down to contact the liquid pattern, and the hydrogel solution is polymerized by UV light. (D) Resetting process. The curing platform moves upward together with the newly formed hydrogel layer. Right: Hydrogel 3D printing system with PLEEC. (A) System schematic. The system consists of seven parts: a mechanical module, a PLEEC panel, a solution-adding unit, a curing platform, a curing unit, a power supply, and a control module. (B) The in-house printing system. Photo credit: Jikun Wang, Xi’an Jiaotong University. Credit: Science Advances, doi: 10.1126/sciadv.aau8769 © 2019 Science X Network (A) Liquid patterns of four representative hydrogel precursors with different chemical and physical properties and polymerization into hydrogel via different polymerization methods. (B) Liquid patterns of four functional materials: temperature sensitive, biocompatible, ionically conductive, and molding materials. Photo credit: Jikun Wang, Xi’an Jiaotong University. Credit: Science Advances, doi: 10.1126/sciadv.aau8769 , Nature As a proof-of-concept the scientists trapped four hydrogel precursors using an electric field, to form diverse structures. For example, Wang et al. trapped 2-acrylamido-2-methylpropanesulfonic acid (AMPS) solution to form a yellow circle, which then polymerized into the PAMPS hydrogel on exposure to UV light. They then similarly trapped the acrylamide solution (AAm) to form a red square, which then polymerized into the PAAm hydrogel by heat. The two hydrogel precursors (AMPS and AAm) were water-like and difficult to control via any other technique to begin with. Wang et al. also formed a blue cross using the alginate solution, which then polymerized into a brittle alginate hydrogel via ion exchange, followed by a green triangle formed using the alginate/AAm solution, which polymerized into an alginate/AAm tough hydrogel by heat and ion exchange. Apart from hydrogel precursors, Wang et al. were able to trap functional materials similarly using the electric field to form yellow wavy lines using N-isopropyl acrylamide solution, polymerized into temperature-sensitive PNIPAM hydrogels. They then formed a red heart using a polyethylene glycol diacrylate solution (PEGDA) widely used in bioengineering applications, followed by the blue flash formed with trapped ionic liquid that was ionically conductive and non-volatile suited for stretchable ionic conductors. A green infinity loop shape resulted from trapped photosensitive resin widely used in 3-D printing. The scientists thus demonstrated how PLEEC could trap a wide variety of hydrogel solutions for large-scale liquid manipulation and hydrogel 3-D printing. The electric field was able to trap a line of water at 100 µm resolution, very close to that observed with DLP and SLA. 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: Hydrogel 3-D printing and patterning liquids with the capacitor edge effect (PLEEC) (2019, April 1) retrieved 18 August 2019 from https://phys.org/news/2019-03-hydrogel-d-patterning-liquids-capacitor.html , Science (A) Asymmetric capacitors with different shapes. The lower electrodes have double the widths of the upper electrodes. When the voltage is on, the liquid is trapped within the patterned region of the lower electrodes. (B) Liquid pattern in the shape of an angry bird. (C) Liquid pattern of four letters “X,” “J,” “T,” and “U.” (D) Liquid patterns of nine natural numbers by independently controlling line pixels. (E) Changeable liquid patterns in the same PLEEC panel by independently controlling 10 × 10 pixels. Photo credit: Jikun Wang, Xi’an Jiaotong University. Credit: Science Advances, doi: 10.1126/sciadv.aau8769last_img read more

Nothing to say on reintroduction of JU entrance tests Guv

first_imgKolkata: West Bengal Governor K N Tripathi today said he had “nothing to say” about the decision of Jadavpur University to reintroduce entrance tests in the Arts faculty, and said the varsity’s executive council was within its rights to lay down admission norms. “The admission committee has been formed by the EC, it has laid down certain norms to conduct admission tests (to six humanities streams). The tests will now be conducted as per the stipulated norms… I have nothing to say in this matter,” Tripathi, who is also the Chancellor of JU, said. Also Read – Speeding Jaguar crashes into Merc, 2 B’deshi bystanders killed Tripathi was asked to comment about the decision of the EC to reintroduce admission tests to the six humanities subjects in undergraduate courses – English, Comparative Literature, Bengali, History, Political Science and Philosophy. On JU Vice-Chancellor Suranjan Das’s statement that he would ask Tripathi to relieve him and Pro-VC Pradip Ghosh of their responsibilities, the Governor said, “Let him (VC) come. I will take appropriate measure after talking to him and taking a view of the whole situation.” Also Read – Naihati: 10 councillors return to TMC from BJP Entrance tests to the six arts subjects will be held on different dates from July 21 to July 25. Students would be admitted based on the 50:50 formula – equal weightage on marks obtained in admission tests and in board examination, a decision which had originally been taken at the June 27 EC meeting and subsequently scrapped, before been reintroduced. JU Registrar Chiranjib Bhattacharya has said no external experts will be involved in the admission process, which will be conducted by faculty members.last_img read more

Another bridge collapses in Bengal none injured

first_imgKolkata: Within a month of the Majerhat bridge collapse here in West Bengal, that claimed three lives, an under construction bridge in South 24 Parganas collapsed on Monday, police said. “Part of the under construction bridge over Kalnagini river in Kawkdeep area collapsed at around 10 a.m. No one has been injured in the incident,” a state police officer said. “The reason of the collapse is yet to be ascertained. Senior officials have reached the spot,” he added. A portion of the Majerhat bridge in south Kolkata collapsed on September 4, killing three and injuring at least 19 others. Another canal bridge collapsed in Darjeeling district’s Siliguri on September 7, injuring a truck driver.last_img

Brain plays key role in gauging errors

first_imgThe key element in our decision-making that serves to both gauging errors and revising our approach is confidence, suggested a new study. The study, published in the journal Proceedings of the National Academy of Sciences, offers insights into the hierarchical nature of how we make choices over extended periods of time, ranging from medical diagnoses and treatment to the strategies we use to invest our money. “Overall, we found that the brain uses confidence to gauge errors and revise decision strategy. Specifically, the confidence in our initial assessments influences how we revisit them,” said Roozbeh Kiani, Assistant Professor, New York University. Also Read – ‘Playing Jojo was emotionally exhausting’“What is challenging about comprehending, why we make certain choices over long periods is to determine the true causes of the outcomes of our decisions,” explains Braden Purcell, researcher, New York University. To do so, the researchers devised an experiment in which subjects judged the net motion direction of multiple dots on a computer screen. The subjects’ judgments were recorded by gauging their eye movement toward one of several targets on the screen. Researchers discovered that when confident about motion direction, subjects attributed negative feedbacks to a change in the environment and quickly explored new targets.  Also Read – Leslie doing new comedy special with NetflixWhen the subjects were less confident, they counted negative feedbacks as partial evidence for an environment change but withheld exploring a new target until the sum of evidence which is confidence on error trials – reached a threshold, revealed the study. According to the researchers, optimal decision-makers should adjust the threshold for switching strategy based on the volatility of the environment.  They showed that subjects were quicker to explore new targets when changes in the environment happened more frequently.last_img read more

High on Creativity

first_imgThe seventh season of Winter/Festive edition of India Runway Week commenced at Thyagraj Stadium last Friday and continued till Sunday. The show opened with the designs of international Designer Bibi Russell under the name of “Rajasthali”. Day one was high on creativity, where experienced designers ruled the ramp.Bollywood Diva Soha Ali Khan walked the ramp for Designer Shweta Sarda who presented the glory of womanhood through her designs while Mugdha Godse and Mandana Karimi also walked the ramp for Designer Satomi by Rakam and Studio AV. Also Read – Add new books to your shelfThe second day of India Runway week Season 7 in association with Big Boy Toyz started  with college students doing the  ramp walk in  the designs of the students from Appejay Design Institute. Fashion designer Yoshita Yadav launched her bridal collection ‘Oudh’ under the label Yoshita Couture at India Runway Week on September 17. Bollywood actor Esha Gupta walked the ramp as the showstopper dressed in a beautiful Yoshita Yadav creation. The collection ‘Oudh’ was presented for the first time and consisted of pre bridal dresses apt for ceremonies like the sangeet, mehendi, and reception of an Indian wedding.  Also Read – Over 2 hours screen time daily will make your kids impulsiveThe bridal collection was inspired by the ethereal style legacy of Lucknow, as the name ‘Oudh’ suggests, the design of the collection took its inspiration from the architecture of the most flourishing and the richest period of the Awadhi history. It aims to revive the continuum of cultural legacy patronized by the Nawabs and the elite of Lucknow.Day 3 started with the show of five designers-  Shilpa Chourasia, Sana Khan, Var-Shi by Varun and Vidushi, Preatz by PreethiFazel, Abitie by Megha Mahendru.  Veteran Actress Sharmila Tagore walked ramp for Rohini Gugnani. She dazzled the show with the grace and dignity showcasing the splendid and grand Avadh era in her designs. Gugnani’s latest collection was an interesting play of concepts derived from the cities of Kanpur, Lucknow, Faizabad which redefined the glory of Avadh period in present time. Ethnicity is kept unscathed, mingling it with contemporary designs to make the collection fit for modern bride and Groom. “I am very humbled that Sharmila Tagore agreed to be the face of the collection as no one could else could have better presented the Nawabi elegance and style” says Rohini.The Grand finale of India Runway Week was by Designers Riddhi and Siddhi with their collection ‘English Country Gardens’.  The collection conjures up contemplative thoughts of romance and lazy summer days. The colour story has a diverse range of hues from onion pinks, peaches,off-whites, pale blue and brown. The silhouettes are long, fluid and layered for women and sharp yet easygoing for men.last_img read more

WB govt shifts Pak inmates to highsecurity cells

first_imgKolkata: The West Bengal government has shifted 14 Pakistani prisoners, lodged in two correctional homes here, to separate barracks and “high-security” cells, amid soaring tension between India and its western neighbour, a senior official said. The state government’s move comes days after a 50-year-old Pakistani convict was allegedly killed by fellow inmates in Rajasthan’s Jaipur Central jail. “Strict instructions have been issued to separate Pakistani inmates from others following the incident in Rajasthan jail. They have been shifted to high-security cells, where heavyweight prisoners, such as those arrested for American Center attack and Maoists have been staying,” the official of West Bengal Correctional Services said. Also Read – Bose & Gandhi: More similar than apart, says Sugata Bose A three-layered cordon has been set up for the security of the 14 prisoners, he said. “Most of these prisoners share a good rapport with their fellow inmates, but we cannot take risk in the wake of the Pulwama attack,” the official told PTI on Wednesday. Of the 14 inmates, four are lodged at Presidency Correctional Home in the city and the other 10 at Dum Dum Central Correctional Home, he said. “Some were jailed for flouting visa norms, while a few were waiting to be taken to other correctional homes. There are also others who were imprisoned for their involvement in criminal activities,” the state government official said. Along with the chief head warden, the head warders are keeping an eye on the cells, he said. “The Pakistani inmates will not be allowed to move out of the sensitive zones for now. Our officers are keeping a close watch on these cells round the clock,” he added.last_img read more

To stop BJP minorities likely to go with TMC in Bengal

first_imgKolkata: Despite nursing a grudge against the state government for its alleged failure to curb communal riots, the minorities in Bengal are likely to vote for the TMC to stop BJP’s march, leaders said. A deciding factor in several Lok Sabha seats in the state, the minorities especially Muslims are likely to vote for the ruling Trinamool Congress (TMC) which they perceive as a “credible force” unlike the Congress-Communist Party of India (Marxist) alliance, they claimed. Also Read – Bose & Gandhi: More similar than apart, says Sugata Bose “Despite having anger against the state government over various issues including several riots that took place in the state, the minorities will vote for TMC in the state to ensure their safety and security,” Mohammed Kamruzzaman, General Secretary of All Bengal Minority Youth Federation told PTI. “In Bengal, TMC is the most credible force as it is in power, when it comes to fight against BJP,” he added. Kamruzzaman, whose organization has the biggest following among Muslim youths in the state, said that the Congress-CPI(M) seat sharing talks have evoked little hopes as credible alternative among the masses. Also Read – Rs 13,000 crore investment to provide 2 lakh jobs: Mamata The Imams of the city, who hold a sway over the large Muslim population here, felt that the minorities should vote for the strongest secular candidate. “We would appeal to the minorities to vote in favour of the strongest secular forces in their respective areas. Efforts should be made to ensure that only secular and democratic candidates win,” Qazi Fazlur Rahman, the Imam, who conducts prayers on Eid at Red Road every year, told PTI. The Red Road Eid prayers witnesses the biggest congregation of Muslims in the state. Rahman’s view was echoed by Shafique Qasmi, Imam of Nakhoda Masjid, the biggest mosque in the city, who stressed that the minorities must ensure that there was no division of their votes and only a secular and democratic force comes to power. The minorities, which comprise nearly 30 per cent of the electorate, are a deciding factor in nearly 16-18 Lok Sabha seats of the state. They are a vote bank that every political party has tried to woo. Parliamentary seats such as Raiganj, Coochbehar, Balurghat, Malda North, Malda South, Murshidabad in north Bengal and seats such as Diamond Harbour, Uluberia, Howrah, Birbhum, Kanthi, Tamluk, Joynagar in south Bengal have very high Muslim population. The TMC presently holds a great influence over the minority votes in the state but several riots that took place in the last four years have angered a section of the minorities. According to Union Home Ministry data released in 2018, communal violence increased sharply since 2015 in West Bengal. While the state recorded 27 incidents of communal violence in 2015, the number almost doubled by 2017 when 58 such incidents were recorded. The recent ones being the Basirshat riots in 2017 and Asansol riots in 2018. The TMC, however, blamed the Bharatiya Janata Party (BJP) for trying to flare up communal passions to serve its own political purpose and expressed confidence that it will repeat its 2014 feat with the help of minorities. “The minorities are very well aware of developmental work that the TMC government has done. Bengal is known for communal harmony but BJP is trying to disturb that for its own political gains,” TMC leader and minister Firhad Hakim said. According to TMC sources, minorities are likely to vote for the party to stop the march of the BJP. Since independence, the minorities in the state voted in favour of the Congress in order to keep outfits like the Hindu Mahasabha and Jan Sangh at bay. However, since the late sixties, they gradually started drifting towards the Left forces, which under the leadership of Jyoti Basu and Promode Dasgupta put up an alternative against the Congress rule in the state. After the CPI(M)-led Left Front came to power in 1977, through its iconic policies of ‘Operation Barga’ – giving land to landless farmers which benefited lakhs including Muslims – cemented its support base among the minorities. Riding on the support of minorities and rural Bengal, the Left Front in 1996 and 2004 had sent the largest bloc of 33 and 34 MPs, respectively, to the Lok Sabha. But things started falling apart for the Left Front after the Sachar Committee report in 2008 painted a dismal picture on the condition of minorities in the state. Adding to their woes was the anti-land acquisition movement in Nandigram and Singur that made the TMC, led by Mamata Banerjee, as the new “saviour” of minorities. Banerjee unseating the 34-year-old Left Front regime in the state but has been accused of appeasing minorities by the BJP-RSS, which emerged as the main opposition in West Bengal. “The policies of the state government were only aimed at protecting the interests of a specific community in the state. This has ignited anger among the majority community which feels only BJP can protect their interests,” BJP state president Dilip Ghosh said. Senior CPI(M) leader and MP Mohammed Salim said the assertion by TMC that it is a saviour of the Muslims in the state has fallen flat in the last few years. While Leader of Opposition Abdul Mannan said that minority voting pattern would depend a lot on the credibility of the CPI(M)-Congress alliance in the state. “If we are able to put up a credible alternative then we too will receive considerable minority votes. But if we fail to do so, TMC will take away the entire share,” the senior Congress leader said.last_img read more

18K troublemongers identified from districts

first_imgKolkata: The office of the Chief Electoral Officer, Bengal, has identified around 18,000 trouble-mongers in the state. A report in this regard has been sent to the Election Commission of India (ECI).It may be mentioned that Deputy Election Commissioner Sudeep Jain during his visit to the state on March 16 had directed the police and administrative officials to identify the trouble-mongers and make preventive arrests. Following Jain’s visit, CEO Ariz Aftab instructed ADG (Law and Order) Siddh Nath Gupta to make a list of such people and submit it to his office within a week. Also Read – Bose & Gandhi: More similar than apart, says Sugata BoseAccording to sources in the CEO office, 18399 people might be responsible for creating trouble during the upcoming elections. During the Assembly elections in 2016, the figure was 16,428 while during the Lok Sabha polls of 2014, it was 12,904. According to the report, South 24-Parganas topped the list with 2,213 trouble-mongers, Murshidabad and Birbhum accounted for 1,726 such people each while in Kolkata around 752 people have made it to the list. Kolkata is eighth among the districts when it comes to the number of trouble-mongers. Interestingly, Howrah Police Commissionerate, Jhargram Police district and South Dinajpur with 73, 83 and 112 people respectively are the most peaceful zones in respect to the probable trouble-makers. Also Read – Rs 13,000 crore investment to provide 2 lakh jobs: Mamata”Apart from making preventive arrests, the Commission has also asked for strict execution of the Non-bailable Arrests Warrant (NBW), seizure of arms, ammunition and illicit liquor. We have been asked to send periodical reports to the ECI along with the data compiled from the districts,” an official in the CEO office mentioned. However, a source in the EC office said this is not the final list as it is based on the present situation. The identification process is going on and the CEO office along with the police administration is keeping a strict vigil on whether there is entry of any outsiders from the bordering states or countries during the elections. The source added that the Commission is considering sending an additional 40 companies of the Central Forces particularly for districts like Jhargram, West Midnapore, Nadia, Murshidabad, South 24-Parganas, North 24-Parganas, Cooch Behar and Darjeeling which share their borders with neighbouring countries or states.last_img read more

Beer belly bad for your heart

first_imgIf you have developed a spare tyre, it is time you saw a doctor to assess your cardiovascular health as researchers have found that belly fat, even in people who are not otherwise overweight, is bad for the heart. “People with a normal weight but a fat belly have more chance of heart problems than people without a fat belly, even if they are obese according to BMI (body mass index),” said study author Jose Medina-Inojosa from the Mayo Clinic in Minnesota, US. Also Read – Add new books to your shelf”This body shape indicates a sedentary lifestyle, low muscle mass, and eating too many refined carbohydrates,” Medina-Inojosa said. BMI, which is weight relative to height in kg/metre square, is used to categorise adults as underweight, normal weight, overweight or obese. However, BMI does not account for the amount and distribution of fat and muscle.Central obesity is a store of excess fat around the middle of the body and is a marker of abnormal fat distribution. Also Read – Over 2 hours screen time daily will make your kids impulsiveThis study tested the hypothesis that people with normal weight and central obesity would have more heart problems than people with normal weight and normal fat distribution.From 1997 to 2000, the study enrolled nearly 1,700 people aged 45 years or older in the US. Participants underwent a clinical examination and measurements were taken of weight, height, waist circumference and hip circumference. Patients were followed-up from 2000 to 2016 for the occurrence of major adverse cardiovascular events such as as heart attack, stroke, and death from cardiovascular causes. Participants with a normal BMI (18.5-24.9 kg/metre square) and central obesity had an approximately two-fold higher long-term risk of heart problems compared to participants without central obesity, regardless of their BMI, the study said.”If you have fat around your belly and it’s greater than the size of your hips, visit your doctor to assess your cardiovascular health and fat distribution. If you have central obesity the target will be waist loss rather than weight loss,” Medina-Inojosa said.last_img read more

Patterns prints for men that can never go wrong

first_imgMen often go with solid colours to stay safe on the fashion barometer, but there are designs and patterns like checks and stripes that they can never go wrong with, suggest experts.Here is a list of few prints and patterns to make your life easier:Checks and stripes have been one of the most dominant patterns when it comes to menswear. The modern day designers are providing new uses and iterations in these patterns. The vertical, horizontal, diagonal, pinstripe and dashed designs can be mixed and matched with check patterns like windowpane, tartan and gingham, which would add texture to the most basic pieces. Also Read – Add new books to your shelfThe white windowpane check pattern on black suit is one classic ensemble that fits best from formal to casual meets.Florals are fun, frolic and scream the summery vibe. Tropical florals are picking up the trend and are considered as one of the best option for vacations. Invest in floral t-shirts and shorts and if you love your suits a lot then try dabbling with the floral tie.Paisley print is identical to floral but varies in terms of motifs. It is mostly a teardrop shaped design that stems back to ancient era. Also Read – Over 2 hours screen time daily will make your kids impulsiveIt’s perfect for men who want subtle embellishments to their wardrobe. Step outside your comfort zone and experiment with different coloured paisley t-shirts or even ties giving a break to mundane fashion.Polka dots have a long and noted history in fashion and over the years it has become a dominant pattern in men’s accessories. Be it ties, pocket squares, socks or simply scarves, this timeless pattern adds a fancy attitude to any look.Shirts with micro polka dots work best as a formal wear option.Conversation prints convey your sense of humour and style in ways that most patterns cannot. It encompasses a wide range of themes, symbols, animal, fruits and what not.last_img read more

Asking questions from destiny

first_imgOpening at the Visual Arts Gallery on August 14 is Georgina Maddox curated stubbing show of powerful figuratives on canvas, as well as sculptures in a quixotically titled show ‘Destiny, Sold Out’.”Fate and Destiny are perceived as twin sisters, that guide humankind through the perils of life. Destiny may be read as both redemption and nemesis of human existence,” says critic and curator Maddox. “According to Modern philosophers, destiny ultimately revolves around death, rather than the events of one’s life while fate has been connected to the concept of life. This has however been challenged. Destiny and Fate have been relevant in every civilization whether Hellenic or Vedic, since the dawn of time.” Also Read – Add new books to your shelfThis exhibition features probing paintings by Shiffali Wadhawan and surreal sculptures by Tapasya Gupta. It explores the notion of destiny and the various myths, traditions, allegories, and perceptions created around it.”Destiny has been formally defined as the power or agency that predetermines and orders the course of events,” opines Maddox one of the finest critics in the country. ” Shiffali and Tapasya examine in detail and depth the human condition and its relation to the idea of destiny. Often in situations of complete despair when there is no answer in sight we humans are faced with the big question ‘why is this happening to me?'” Also Read – Over 2 hours screen time daily will make your kids impulsiveWith the figurative perfectionist Shiffali Wadhawan, the objects and figures work as references that invests these works with a strong biographical and emotionally resonant note. Wadhawan works on realist principles but it is her approach and subject sensitivity that brings in a surrealism that is both symbolic as well as sensitive to her output rooted in a consistent set of emotional themes. Indeed, the eternal thread may be read as the realm of the unconscious, timeless and eternal, from which the multifarious and at times contradictory forms of her art emerge. The finesse and felicity of forms and scale of these works reflect the artist’s research into correspondences between the shapes of human figurines and the contours of bird in the realism of a scenic spectacle. The flamingoes appear formally factual, but within their perfection of form and figure, we can glimpse spirits of different ages and statuses and will evoke mediums or visionaries engaged in a conversation that is part convocation and part choral lament. With allusions to the reality of life-destiny and dictates and spiritual travel, Wadhawan offers a conversation for these imagined voices and premonitions and underscores the brevity of human existence relative to cosmic and geologic time in which nature plays a vital part.Tapasya Gupta creates hybrid sculptures that dwell both on symbolism as well as the blended realities of today. She expands her ongoing explorations into the histories of specific mediums bronze, metal wood as well as fiberglass to give us stories within stories. In these quaint hybrids like creations, we glimpse artistic forms and dualities as well as cultural symbolism.In her sculptures, Tapasya traces the history of the contours in composition across centuries and diverse geographies – following its transitions and shifting associations, from the sacred to the political to the emotional. Her sculptures invade the space in moments when the storyline ascends and descends and then recedes, channeling a discomfort within sterile environments and the invisible alien aftermaths that engulf us and transform our very inner recesses.The show runs till August 18 at Visual Arts Gallery, India Habitat Centre.last_img read more

PM distributes 1000 electric potter wheels

first_imgPrime Minister Narendra Modi, on February 19, distributed 1,000 Electric Potter Wheels along with other pottery equipments among the potters at Varanasi.Creating positive impact on the lives of artisans, among whom the Prime Minister had earlier distributed 260 Electric Potter Wheels along with Blungers and Pug-mills. The Khadi and Village Industries Commission (KVIC), under its Kumhar Sashaktikaran Yojana, has identified another 1,000 potters in Varanasi for distributing Electric Potter Wheels, Pug-Mills, and Blungers. Training of those 1,000 has already been completed. These 1,000 Electric Potter wheels, 100 Pug-Mills, and 100 Blungers will create 4,800 direct employments in Varanasi region as each machine provides direct jobs to four persons. Also Read – Add new books to your shelfKVIC Chairman Vinai Kumar Saxena said it is a matter of pride for KVIC that the Prime Minister has distributed its Electric Potter Wheels, Blungers and Pug-Mills for the second time. “The Electric Potter Wheels had appeared as major game-changer for the lives of Kumhar community. Since Varanasi and surrounding areas have a significant number of Kumhar people, the demand for more Electric Potter Wheels have come in a big way after its distribution,” he said, adding, “We had requested the Railways to make use of these products mandatory at Varanasi and Raebareilly Railway Stations. Accepting the request, The Railways issued the orders on January 16.” Also Read – Over 2 hours screen time daily will make your kids impulsiveIt may be noted that KVIC, for the first time, has reached the remotest areas of Leh / Ladakh, to create employment opportunities in that region, which was so far, cut-off from the main land of the nation. “These Electric Potter Wheels have not only revived the pottery industry from extinction but also has created a big ray of hope for the further generation of employment. We have identified the artisans for pottery with the help of Ladakh Autonomous Hill Development Council (LAHDC) in the villages like Likhit, Saspole and Matho etc. of Leh region, which will create direct employment for 720 people. We have set a target of distributing another 10,000 Electric Potter Wheels with 1,000 Pug-Mills and 1,000 Blungers by March 31 this year,” the KVIC Chairman added.last_img read more

Go the Distance

first_img Opinions expressed by Entrepreneur contributors are their own. 2 min read Free Webinar | Sept 5: Tips and Tools for Making Progress Toward Important Goals Register Now » As part of its focus on the customer experience, eBay is intent on rewarding sellers who go the extra mile to meet or exceed customer service standards. “We want to promote the best customer experiences and demote those sellers who are underperforming,” says John McDonald, a senior director on eBay’s U.S. trust & safety team. “By encouraging sellers in this way, we will help them deliver that fantastic buying experience.” eBay offers three major benefits to exceptional sellers who maintain their status:1. Discounts for PowerSellers: For the first time ever, PowerSellers can receive tiered discounts based on feedback customers give about their buying experiences. Volume sellers who maintain a Detailed Seller Rating, or DSR, of 4.6 or higher will receive rebates on their fees ranging from 5 percent to 20 percent, with 20 percent off for those who maintain a 4.9 or higher average within the previous 30 days.2. Better payment protection: PowerSellers in the United States, Canada, the United Kingdom and Hong Kong are eligible for expanded protection against claims, chargebacks, reversals of unauthorized payments, and merchandise not received when they have registered PayPal accounts linked to their eBay accounts. Only transactions that are conducted through PayPal are eligible. The protection is free, has no annual limit and no longer requires a confirmed address for a transaction to be covered.3. Increased exposure: In addition, all great sellers are getting increased listings exposure thanks to Best Match search results, which were introduced last year and, in March, became the default search criteria for eBay listings. Best Match is different from traditional eBay searches, which defaulted to the item ending soonest, says Todd Lutwak, senior director of eBay’s seller development team. “Best Match takes into account format, time ending, relevance–how closely it matches what we think the buyer wants based on the title of the listing–and attributes,” says Lutwak. “We’re also elevating the sellers with high DSRs.”Best Match allows buyers to find relevant items faster, increasing their level of satisfaction. In fact, since it was rolled out as a search engine, Best Match has proved to be the best sort method for successful buyer conversion. And because sellers with higher DSRs are elevated, it’s more likely that buyers will have positive experiences. August 18, 2008 Attend this free webinar and learn how you can maximize efficiency while getting the most critical things done right.last_img read more

8 Indispensable Skills Millennials Need to Thrive in Todays Economy

first_img Enroll Now for Free Free Workshop | August 28: Get Better Engagement and Build Trust With Customers Now It’s no secret that the world is changing at an increasingly fast pace. Some skills that were important in past decades have become obsolete and to succeed in today’s economy, young entrepreneurs must develop new and valuable skills to help them stand out in a highly competitive global workforce. The average millennial is expected to have more than four careers in his or her lifetime. No matter what industry or career you choose, these are eight skills that will be relevant for many years to come.1. Cultivate diverse cultural awareness.More entrepreneurs are doing business on a global scale, which makes it important to have a diverse understanding of different cultures.Millennials with extensive travel experience have a huge advantage over those who have only lived and operated in a single local area. When your life experience is limited to a small geographic area, you begin to live in an echo-chamber of similar thoughts, political opinions and values. The more you get out and experience other cultures, the easier it will be for you to connect and work with people of different backgrounds.  For example, the Indian economy is expected to grow 7 percent over the next year. This is helping to fuel a startup revolution that’s empowering thousands of entrepreneurs in India. American entrepreneurs who understand Indian culture will have a better chance at partnering or collaborating with these Indian companies. Related: 7 Ways to Tap the Skills Your Millennial Team Has in AbundanceAlso, those who can speak more than one language instantly open themselves up to more opportunities. You’ll be able to work with employees, partners and customers from countries with different official languages. Just imagine how much easier it would be to work with a Chinese manufacturer if you spoke Mandarin.2. Utilize time-saving productivity tools.Time is the most valuable asset for young entrepreneurs. It’s always depleting and you can’t buy more of it. The most successful entrepreneurs know how to make the best use of their time. Outsourcing platforms like Upwork and Fiverr give entrepreneurs the ability to save time by outsourcing tasks to talented freelance service providers from around the globe. Personal productivity apps like Evernote, Slack and Feedly make it easier to stay organized, communicate with your teams and execute actions quickly.3. Develop high social and emotional intelligence.In a digital world, it has become extremely important to hone your social and emotional intelligence skills. Social media has allowed us to quickly connect with people around the world, but some say this has come at the cost of real connections and relationships.Tools like email and instant messaging limit our ability to communicate emotions like sincerity, anger and empathy. Millennials need to understand the limitations of these digital platforms and learn how to communicate most effectively.For example, you may want to connect with a major investor in your market. How can you effectively reach out to them without sounding needy or pushy? Related: The Many Reasons Why Tech-Savvy Millennials Need to Get Reality Savvy4. Know how to effectively use mobile digital marketing.In the past, entrepreneurs were limited to expensive, hard-to-scale marketing channels. Today, mobile digital marketing makes it cheaper and faster to identify customer needs, test ideas and produce products. Millennials are spending an enormous amount of time on their smart phones. In fact, over 65 percent of Facebook’s 8 billion daily video views come from mobile devices. The gap between time spent watching TV and time spent on social networks like SnapChat is quickly closing.If you want to succeed at selling and influencing in today’s economy, then you need to know how to spread your message through mobile digital marketing. With an overwhelming amount of content being produced every day, millennials need to be able to stand out from the crowd. 5. Be an effective self-manager.The number of people working remotely has more than doubled in the past decade, which means that millions of people are working without direct physical supervision. This has given people more autonomy, but in order to be effective, both entrepreneurs and employees need to develop the skill of self-management. This includes managing your own tasks, projects, lines of communication and schedules. I’m a big fan of project management tools like Basecamp. This allows me to keep in touch with my team, stay on top of my to-do list and milestones and to see what my staff is accomplishing in real-time. It’s also very helpful for team members to do daily check-ins where everyone writes a quick recap of what they accomplished during the day, questions they have for other team members and where they need help. This type of consistent communication keeps everyone accountable and eliminates bottlenecks. 6. Understand core computer technology.English and mathematics have been the two staples of the American education system for centuries. Now, computer technology has emerged as one of the most valuable skills for millennials entering the workforce. Some important core computer technologies to understand include operating systems, databases and applications. At the very least, all millennials need to understand basic programs like Google Docs, PowerPoint, and Dropbox. Also, it’s vital to know how to protect your computer against malware and viruses. Even if you’re not going to be a computer programmer, you’ll still want to have a basic understanding of computer languages like HTML, CSS and JavaScript. You may also want to learn about design and user experience. Most sites and apps begin with a prototype or wireframe, then move into programs like Photoshop to create design elements. If you have some understanding of the process, you will be more efficient and effective.Related: 6 Ways to Attract and Retain a Dynamic Millennial TeamNo matter what area of focus you choose, computer technology is likely to be at the core of your business, so it makes sense to understand all aspects of the digital world. 7. Study financial literacy and practice sound investing.Since the global financial crisis in 2008, many millennials are afraid of the financial system. They’re choosing robo-advisors over human financial advisors or deciding not to invest at all.The amount of financial advice and information is overwhelming for many people. From the conflicting opinions of financial pundits on TV to complex financial investment options, millennials rarely know who to trust or what to do with their money. All millennials need a basic understanding of things like compound interest, cash flow statements, debt vs. equity, tax implications of various decisions and balance statements. These topics will help you gain control over your personal budget and financial goals. If you’re interested in growing your wealth, then you should learn about the public stock market, real estate and startups. At this level, it’s important to understand macroeconomic trends, fund-raising concepts and company valuations. 8. Research and find answers to complex problems.The answer to virtually any question or problem can be found with a few clicks of a mouse. Thanks to huge databases like Google and Wikipedia, it has never been so easy to research topics and discover solutions to complex problems. However, due to the amount of information (and misinformation) online, it’s vital that you’re able to filter the signal from the noise. In other words, you need to find the valuable information in a world of endless content. For example, you may want to plan the perfect company retreat. How do you coordinate an event location and travel accommodations for your company? How can you quickly and effectively research reviews, prices, and availability?Or let’s say you’re looking to build a new iPhone application that shows mountain bikers all the trails in their area with ratings from other riders. How do you aggregate all the trails across the nation? Are there any competitors that are already providing that service? What topics will you include in the trail rating system?Being able to dig in and find answers is a very valuable skill, but it takes savvy thinking and determination. Those who can think critically and creatively will be able to find answers quicker than those who think inside the box.  7 min read April 25, 2016 Opinions expressed by Entrepreneur contributors are their own. This hands-on workshop will give you the tools to authentically connect with an increasingly skeptical online audience.last_img read more

Entrepreneur Daily Deals 700 Off 55 LG 4K HDTV Bluetooth Headphones and

first_img Entrepreneur has affiliate partnership with TechBargains so we may get a share of the revenue from your purchase.Thanks to our friends at TechBargains, we’ve rounded up three can’t-miss deals on stuff you won’t want to miss. Check it out:55″ LG OLED 4K UltraHD HDTV for only $1599.99 (Orig. $2299.99)LG’s OLED HDTVs are at the top of every major reviewer’s list for the best TV you can buy. They are ultra thin and have the best picture quality with inky blacks and vibrant colors. Thanks to each individually controlled OLED pixel you can achieve true black by turning off the pixel. LED TVs can only turn off a section of pixels and are unable to achieve the perfect black that OLEDS Can. This is among one of the best prices we’ve seen for this TV.Vivon Contemporary Foam Accents Chairs for $84These foam chairs are available in four colors and four different styles. They add a modern twist to any room and are made from layers of supportive and conforming foam for a comfortable sitting experience.JayBird Freedom Wireless Bluetooth Headphones for $29.99 (Orig. $44.99)Get ready for the iPhone 7 as it is rumored that it will not come with a headphone jack. This means you will have to use Bluetooth headphones for the best experience and these popular JayBirds are great for working out and come from a popular brand.Disclosure: This is brought to you by the Entrepreneur Partner Studio. Our goal is to feature products and services that we think you’ll find interesting and useful. If you purchase them, we may get a small share of the revenue from the sale from our commerce partners.Have a deal you want to promote? Contact us here. Enroll Now for Free This hands-on workshop will give you the tools to authentically connect with an increasingly skeptical online audience. Opinions expressed by Entrepreneur contributors are their own. 2 min read Free Workshop | August 28: Get Better Engagement and Build Trust With Customers Now August 4, 2016last_img read more