“Because the posture response of the bicycle is passive, it is not possible to control directly,” Murakami explained. “Therefore, it is necessary to do the stabilization control indirectly by using the bicycle steering control. This is one reason why bicycle stabilization becomes difficult.”While the optimal stabilization strategy allowed the bicycle to run on a straight path on the rollers, the other strategies could stabilize the bike’s posture, but had position errors that resulted in the bicycle diverging from its straight path. One key to achieving these results was developing a simplified dynamic model for a bicycle, a modification of the more complicated but widely studied Sharp dynamic model developed by R. S. Sharp in 1971. The researchers’ simplified version enabled them to develop a bicycle controller that fused stability and trajectory control. While these experiments tested the bicycle’s ability to ride in a straight line, the researchers predict that the control strategy could also extend to curved trajectories. The team plans to make improvements to the model to account for road irregularities and tire characteristics, which weren’t accounted for in this study. By confirming the feasibility of bicycle stability unassisted by a human rider, the researchers hope to continue making bicycles increasingly sophisticated and safe.“Our final goal is to stabilize the bicycle at zero speed,” Murakami said. “Many bicycle falling accidents happen when elderly people stop a bicycle in a crosswalk, and so on.”More information: Tanaka, Yasuhito, and Murakami, Toshiyuki. “A Study on Straight Line Tracking and Posture Control in Electric Bicycle.” IEEE Transaction on Industrial Electronics. To be published.Copyright 2008 PhysOrg.com. 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 This material may not be published, broadcast, rewritten or redistributed in whole or part without the express written permission of PhysOrg.com. 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. Despite the challenge, engineers from Keio University in Yokohama, Japan, are developing a self-stabilizing electric bicycle, one that can stay upright by itself while being propelled and steered by electric motors. Their ultimate goal is to create a sophisticated, high-performance bicycle that could serve as a convenient alternative to a small car.Yasuhito Tanaka and Toshiyuki Murakami, both with the Department of System Design Engineering at Keio University, will publish their study in an upcoming issue of IEEE Transactions on Industrial Electronics.“The bicycle is a comfortable vehicle that is safe and can offer more familiarity with nature compared with the car,” Murakami told PhysOrg.com. “Especially, the bicycle is a convenient vehicle that can be useful as an activity for elderly people. However, it is thought that a lot of bicycle falling accidents occur with elderly people, and it is very useful to achieve a safer bicycle.”As the first step toward their goal, the researchers designed an electric bicycle that maintains its balance and follows a straight path. In simulations and experiments, they tested three different strategies that combine stability control and trajectory control. The researchers found that a combination of the “posture controller” (for stability) and “steering function controller” (for trajectory) could enable the bicycle to drive by itself continuously. In the experimental set-up, a conventional bicycle was placed on three rollers – two underneath the rear wheel and one underneath the front wheel. When the rear rollers rotated, the front roller rotated through a wire. Two motors controlled the motion of the bicycle – the motor on the handlebars controlled steering, and the motor in the back drove the rear wheel at an average speed of 2.5 meters per second. To monitor the bicycle’s position and stability, the engineers attached an LED to the back side of the bicycle, and used a camera mounted behind the bike to monitor the LED’s movement. A gyro sensor attached to the bicycle also detected changes in the bicycle’s direction angle. The researchers could control the bicycle in real time using feedback from these sensors with an RTLinux operating system. As the researchers explained, adjustments to the acceleration (back motor) and steering (front motor) were straightforward because the feedback could be interpreted to have a clear physical meaning. The control system then calculated the necessary motor adjustments. In the experimental set-up, the bicycle ran on rollers. The motor on the handlebars controlled steering, while the motor in the back drove the rear wheel. The gyro sensor, LED, and camera detected the bicycle’s position, which gave feedback to a control system that adjusted the motors to maintain bicycle stabilization. Image credit: Yasuhito Tanaka and Toshiyuki Murakami. ©2008 IEEE. Explore further Citation: Engineers design self-stabilizing electric bicycle (2008, November 4) retrieved 18 August 2019 from https://phys.org/news/2008-11-self-stabilizing-electric-bicycle.html Shared e-cargo bikes: Boom and barriers in Basel (PhysOrg.com) — As every five-year-old knows, balancing on a bicycle is not as easy as it looks. But, as engineers know, getting a bicycle to balance by itself – without a human riding it – is even more difficult.
(PhysOrg.com) — Since 1994, when Peter Shor famously showed that a quantum computer could factor large numbers exponentially faster than any current classical algorithm, physicists have been investigating a variety of quantum computing schemes. However, truly scalable, controlled entanglement between many particles remains an elusive goal. In a recent study, physicists have proposed a new system that uses ultracold atoms trapped in an optical lattice to generate entanglement, which may be a promising method for realizing a scalable quantum computer due to the high degree of control it offers. In their study, the scientists also show that the system can perform some simple quantum logic gate operations, such as targeted qubit operations, based on the translatable optical lattices at two wavelengths. In addition, the messenger atoms can be used for reading out the quantum information from the qubits. Also, in analyzing the accuracy and uncertainties of the system, the physicists found that fidelities greater than 97% should be possible when entangling distant qubits. The scientists plan to fully demonstrate the system in future work.“Currently we have both atomic species cooled and trapped in a magneto-optical trap and are preparing to further cool the atoms in a second optical trap,” Brickman Soderberg said. “Once the atoms are cold, our immediate goal is to study the interactions between lithium and cesium to identify the best strategy to perform quantum logic operations. Since this is the first time that lithium and cesium have been combined for this purpose, not much work has been done to study the dynamics between the atoms. After that, we will load each atom into its own optical lattice to carry out the qubit operations discussed in the paper.”More information: Kathy-Anne Brickman Soderberg, Nathan Gemelke, and Cheng Chin. “Ultracold molecules: vehicles to scalable quantum information processing.” New Journal of Physics 11 (2009) 055022.Copyright 2009 PhysOrg.com. 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. 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. Trapped, Imaged Single Atoms May Enable Powerful Quantum Computing In the new system, lithium and cesium atoms are held in separate optical lattices, and (far right) the atoms can be overlapped by translating the lattices with respect to each other. When the messenger and qubit atoms are overlapped, entangling operations can be performed. Credit: New J. Phys. 11 055022, Kathy-Anne Brickman Soderberg, Nathan Gemelke and Cheng Chin, James Franck Institute and Physics Department, University of Chicago, Chicago, IL 60637, USA. Explore further Citation: Physicists Propose New Ultracold Scheme for Scalable Quantum Information Processing (2009, June 3) retrieved 18 August 2019 from https://phys.org/news/2009-06-physicists-ultracold-scheme-scalable-quantum.html Physicists Kathy-Anne Brickman Soderberg, Nathan Gemelke, and Cheng Chin of the University of Chicago have presented their novel system in a recent issue of the New Journal of Physics. As the scientists explain, the scheme uses two different species of atoms: lithium atoms act as quantum bits to store information, and cesium atoms act as messenger bits that mediate entanglement between distant lithium qubit atoms. Each atomic species is trapped in its own optical lattice, which is an intensity pattern made by several overlapping laser beams. By shifting the relative alignment of the lattices through optical phases, each cesium atom can, in principle, be transported to any distant lithium atom in a controlled way. During this shifting, the cesium atoms can swap entanglement between any two lithium qubit atoms. In the end, the qubit atoms are entangled with each other and the messenger atom is disentangled from the qubits.While previous schemes have also used atoms in optical lattices to implement entanglement, the new proposal is unique in that it introduces the auxiliary messenger atoms. As the scientists explain, independent control of the qubit and messenger atoms provides the key to achieve a large-scale quantum computation. The fact that lithium and cesium atoms have very different dominant atomic transition lines makes it possible to independently confine and control the two species. Atoms trapped in optical lattices have several advantages as a quantum information processing system. As the physicists explain, this kind of system easily lends itself to scalability because thousands of atoms can be isolated in a regular array, and can be transported simply by controlling the optical phases of the lattice beams. Also, since many cesium atoms can be held in the optical lattice, multiple copies of the same computation can proceed in parallel.“Our scheme is scalable in the sense that we do not need to carry out pairwise operations over the lattice to entangle two distant qubits,” Brickman Soderberg told PhysOrg.com. “Instead we can use the messenger atoms to directly carry the entanglement between the qubits. Another strength of our system is that we can individually address our qubit atoms by overlapping the target qubit with a messenger atom, thus eliminating the need for tightly focused laser beams. This will allow us to perform targeted single qubit operations, which may be a necessary step in a large-scale quantum computer.”
Explore further The company released the following statement about the creation of the prototype screen:“Our company makes digital signage, and people were asking us to create a large screen device which has multi-touch functionality like a smart phone. We first tried to make it using Windows 7, but it didn’t meet the needs of our customers. They said they wanted crisp, fluid movement like in a smart phone but with a high-resolution display. But when we asked touch panel and peripheral manufacturers they said they don’t support the Android OS, so we were temporarily stalled. We want to do a lot more work with Android in the future, so we decided to develop the system ourselves.”This means that the company also had to develop their own drivers for the device in order to have a multi-touch display of this size run properly. Of course, this screen will not only come in the 32″ prototype size. When the screens are sold commercially the company expects to sell in a variety of sized, including a 23″ and a 46″. There is also some discussion about the creation of a wide screen version of this device.The product is expected to be ready for commercialization by September, though no release specifics have been given at this time. © 2010 PhysOrg.com (PhysOrg.com) — Researchers at SKR have developed a prototype of a multi-touch 32″ display screen that runs on the Android operating system. The screen, which runs off of a standard Android terminal, is connected to the touch sensors and an HDMI screen via a USB port. The end result of the screen is that the android interface works like smaller devices, but it can also display large format Full HD video. 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. New keyboard software makes typing faster on touch screens (w/ Video) Citation: SKR researchers develop a 32-inch Android-based multi-touch display (2011, July 6) retrieved 18 August 2019 from https://phys.org/news/2011-07-skr-inch-android-based-multi-touch.html
More information: Wei Ren and L. Bellaiche. “Prediction of the Magnetotoroidic Effect from Atomistic Simulations.” Physical Review Letters 107, 127202 (2011). DOI:10.1103/PhysRevLett.107.127202 This document is subject to copyright. Apart from any fair dealing for the purpose of private study or research, no part may be reproduced without the written permission. The content is provided for information purposes only. Explore further Copyright 2011 PhysOrg.com. 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. Magnetic Vortex Switch Leads to Electric Pulse (PhysOrg.com) — For many years, scientists have known about the magnetoelectric effect, in which an electric field can induce and control a magnetic field, and vice versa. In this effect, the electric field has always been homogeneous. Now, scientists have found that a curled electric field can also be used to control magnetic fields, constituting a novel phenomenon that they call the “magnetotoroidic effect.” Citation: Physicists discover ‘magnetotoroidic effect’ (2011, September 26) retrieved 18 August 2019 from https://phys.org/news/2011-09-physicists-magnetotoroidic-effect.html “A homogeneous electric field is one in which the electric field is a constant everywhere, as that produced by opposite static charges on two metallic capacitor plates,” Wei Ren of the University of Arkansas told PhysOrg.com. “On the other hand, a time-varying magnetic field can also induce an electric field that possesses a curl according to the Maxwell-Faraday equation. However, such a curl is zero in the homogeneous electric field.”In their study, Ren and coauthor L. Bellaiche, also from the University of Arkansas, have performed atomistic simulations that have confirmed the existence of the new effect, which was previously predicted in theory. Their results are published in a recent issue of Physical Review Letters.In their simulations, the researchers applied a curled electric field to nanodots made of bismuth iron oxide (BFO), which has magnetic properties. They found that, by playing with the magnitude and direction of a vector quantifying the curled electric field, they could control both the magnitude and direction of the nanodots’ magnetization.The simulations also revealed that the effect originates from an interplay among three different components: magnetic dipoles, electric vortices, and oxygen octahedral tilts (from the BFO). When using the curled electric field to control the nanodots’ magnetization, the researchers discovered that the process involves some peculiar intermediate states. One such state, for instance, consists of pairs of electric vortices that coexist with a single antivortex.“Some of our findings are quite surprising and unexpected,” Ren said. “The coexistence of a vortex pair and an antivortex in ferroelectrics has never been reported before, although it is now known as an extremely interesting state in ferromagnetism research areas.”This understanding of the magnetotoroidic effect could enable scientists to use electric fields to better control magnetism, which could have a variety of useful applications. In their paper, the scientists mention the possibility of developing new memory devices with unprecedented storage density.“The MT effect may find applications in the field-induced controlling of magnetic orders, switching of ferroelectric vortex, and modulation of oxygen octahedral tilts,” Ren said. “More importantly, this effect can lead the burgeoning magnetoelectric research to some new arena thanks to the rapid development of nanoscience and engineering.”
Explore further Crude oil no longer needed for plastics (PhysOrg.com) — As most people know, modern plastics are made from crude oil derivatives, making them vulnerable to price and supply fluctuations, which in the end means an alternative must be found in order for the plastics industry to remain viable. One alternative is to use plant material, or biomass instead. Unfortunately, at least till now, the lack of a good catalyst has made the process both expensive and messy, at least for those that create plastics that are virtually identical to the ones based on petroleum. Now, researchers in The Netherlands have found an iron catalyst that appears to be both effective and doesn’t produce a messy byproduct. They describe their work in the journal Science. Citation: Research team develops better iron catalyst to help turn plant material into plastic (2012, February 17) retrieved 18 August 2019 from https://phys.org/news/2012-02-team-iron-catalyst-material-plastic.html More information: Supported Iron Nanoparticles as Catalysts for Sustainable Production of Lower Olefins, Science, 17 February 2012: Vol. 335 no. 6070 pp. 835-838. DOI: 10.1126/science.1215614ABSTRACTLower olefins are key building blocks for the manufacture of plastics, cosmetics, and drugs. Traditionally, olefins with two to four carbons are produced by steam cracking of crude oil–derived naphtha, but there is a pressing need for alternative feedstocks and processes in view of supply limitations and of environmental issues. Although the Fischer-Tropsch synthesis has long offered a means to convert coal, biomass, and natural gas into hydrocarbon derivatives through the intermediacy of synthesis gas (a mixture of molecular hydrogen and carbon monoxide), selectivity toward lower olefins tends to be low. We report on the conversion of synthesis gas to C2 through C4 olefins with selectivity up to 60 weight percent, using catalysts that constitute iron nanoparticles (promoted by sulfur plus sodium) homogeneously dispersed on weakly interactive α-alumina or carbon nanofiber supports. © 2011 PhysOrg.com Journal information: Science Biomass can be used to make plastics by burning it which produces a mix of carbon monoxide and hydrogen. When a catalyst is added to the mix, (most of which are generally based on iron) syngas is produced with olefins in it. The olefins are the components in syngas that form into plastic when they are chemically connected together. The problem up till now has been that the catalysts used thus far haven’t been very efficient (the proportion of olefins in the syngas were very small) and tended to produce carbon dust and methane.In this new research, the team studied many different iron based materials hoping to find one that would work better. After an exhaustive search they discovered that by changing the grain size of one such catalyst material from an average of 500 nanometers to just 20, and then forcing the grains to be evenly spaced apart to prevent clustering, improved efficiency dramatically. Then, by accident (one of their chemicals had been accidently tainted) they found that adding a tiny bit of sulfur and sodium to the mix improved the efficiency even more. The end result is a process so efficient that no carbon dust or methane is produced.The researchers acknowledge that the process still isn’t efficient enough to compete with those based on petroleum products, despite the fact that it produced roughly fifty percent more lower olefins than previous methods. At just 60% efficiency, that still leaves 40% waste, too much for it to be considered a viable replacement, at least at current oil prices and availability. More optimistically, the fact that the team was able to double the efficiency of current methods suggests that even better efficiencies in the future might be found. 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.
© 2013 Phys.org Explore further The announcement comes on the heels of news from Mars One—the Netherlands based group selling tickets for a one way trip to the red planet—announcing that over 78,000 people have signed up so far. Some of those people might change their mind however when they learn of recent discoveries about the content of Martian dust.NASA’s chief health and medical officer, Richard Williams, told those at the summit that perchlorates appear to be widespread on the planet’s surface. The fine dust material produced by perchloric acid has been known to cause thyroid problems in people here on Earth. Just as problematic, Grant Anderson (co-founder of Paragon Space Development) told the audience, is gypsum. The Curiosity rover has found veins of it near the planet’s surface. Though it’s not toxic, it has been known to cause a condition similar to black lung in coal miners in people exposed to it for long periods of time.Both types of dust particles are in addition to the known presence of silicates on the Martian surface—if breathed-in they can cause reactions with water in the lungs and result in the creation of harmful chemicals.Martian dust could pose health hazards because of the difficulty of removing it from space suits and boots. NASA learned during the Apollo space missions that moon dust was a much bigger problem than had been anticipated. They have reported in the past on the large amounts of dust that stuck to astronaut suits and boots. Fine grains stick to materials because of static electricity, and on Mars would likely be sucked into a controlled environment by an air-lock. Over time, health specialists fear the dust would build up in air filters and living quarters, adding yet another life threatening element to the list of other known hazards (traveling and landing safely, exposure to radiation and cosmic rays, etc.) for the people who seek to colonize the planet.Space technologists have yet to figure out a way to remove the fine particulates from suits and boots and because of that, manned missions to Mars could be put on hold indefinitely. NASA scientists eyeing regional dust storm on Mars (Phys.org) —Reports given by experts in the space-health field suggest it might take longer for humans to build a colony on Mars than has been expected. Such experts speaking to attendees at the recent “Humans 2 Mars Summit” in Washington D.C. expressed concern about the dangers of Martian dust. They believe the health hazards posed by the Martian regolith could prevent humans from colonizing the planet anytime soon. More information: via Newscientist Citation: Reports from “Humans 2 Mars Summit” suggest dust may prevent human settlement of Mars (2013, May 10) retrieved 18 August 2019 from https://phys.org/news/2013-05-humans-mars-summit-human-settlement.html Mars surface. 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.
An ultrathin device for mapping changes in skin temperature to 0.02 C adheres to the skin surface without the use of glues or tapes. Credit: University of Illinois and Beckman Institute © 2013 Phys.org Explore further (Phys.org) —A diverse team of researchers from the U.S., China, and Singapore has created a patch that when glued to the skin can be used as a thermometer—continuously measuring skin temperature. In their paper published in the journal Nature Materials, the team describes how the patch is made and ways it can be used. The team was led by John Rogers of the University of Illinois—he has been working on ultra-thin electronic skin patches for several years. Just two years ago, he and his team developed a skin patch that sported sensors, radio frequency capacitors, LEDs, transistors, wireless antennas, conductive coils and even solar cells for power. Other researchers have also been hard at work developing patches for applying directly to the skin, or in one case, a tooth. In this latest effort the researchers have fine tuned a patch that resembles a tattoo once applied—it’s meant for one specific task—monitoring skin temperature.The patch is small, of course, just inches across, and extremely thin. It’s also pliable—it’ll keep working even when the skin to which it’s attached twists and turns. The idea for the patch is that it can measure body temperature (at the skin level) very accurately, and over a continuous period of time. Also, because it measures heat at multiple locations (at the same skin site) at the same time, the patch is capable of monitoring heat flow and the constriction and dilation of blood vessels as they respond to the environment around them. Drug patch treatment sees new breakthrough Journal information: Nature Materials In this infrared image, active heating elements of an ultrathin device on the skin appear white due their increased temperature. The device construction allows for application of controlled heating while simulataneously mapping temperature changes to 0.02 °C. Credit: University of Illinois and Beckman Institute The patch looks like a bar-code tattoo and is applied using special glue. Thus far, the team has created two versions of the patch that operate in slightly different ways, but offer the same end result—heat readings. The team says that the patches can work in reverse as well, delivering heat to the skin, if desired, simply by increasing the voltage. The patch isn’t ready for use by the general population just yet, however, as it still requires an external power source. The team is investigating different sources for different types of patches—solar for those applied to the skin and bioelectric for those applied inside the body, such as to the outside of organs. More information: Ultrathin conformal devices for precise and continuous thermal characterization of human skin, Nature Materials (2013) DOI: 10.1038/nmat3755AbstractPrecision thermometry of the skin can, together with other measurements, provide clinically relevant information about cardiovascular health, cognitive state, malignancy and many other important aspects of human physiology. Here, we introduce an ultrathin, compliant skin-like sensor/actuator technology that can pliably laminate onto the epidermis to provide continuous, accurate thermal characterizations that are unavailable with other methods. Examples include non-invasive spatial mapping of skin temperature with millikelvin precision, and simultaneous quantitative assessment of tissue thermal conductivity. Such devices can also be implemented in ways that reveal the time-dynamic influence of blood flow and perfusion on these properties. Experimental and theoretical studies establish the underlying principles of operation, and define engineering guidelines for device design. Evaluation of subtle variations in skin temperature associated with mental activity, physical stimulation and vasoconstriction/dilation along with accurate determination of skin hydration through measurements of thermal conductivity represent some important operational examples. An ultrathin device for mapping changes in skin temperature to 0.02 °C is applied to the skin using a water-soluble backing. Credit: University of Illinois and Beckman Institute An ultrathin device for mapping changes in skin temperature to 0.02 °C is shown with a representative colormap of temperature distribution on the wrist. Credit: University of Illinois and Beckman Institute Citation: Research team develops tattoo-like skin thermometer patch (2013, September 16) retrieved 18 August 2019 from https://phys.org/news/2013-09-team-tattoo-like-skin-thermometer-patch.html This document is subject to copyright. Apart from any fair dealing for the purpose of private study or research, no part may be reproduced without the written permission. The content is provided for information purposes only.
Light-in-flight measurement and data cube. (a) A laser pulse is reflecting off multiple mirrors, passing three times across the field of view of the SPAD camera (35 × 35 cm2). The same laser is used to create a trigger sent to the camera. The SPAD camera collects scattered photons from the laser pulse. The field of view does not contain the mirrors because the scattered light coming from the mirror surfaces is much more intense than the Rayleigh-scattered light during propagation. (b) The histogram indicates the time of arrival of the laser pulse as measured by pixel (22, 21). The time frames, shown at 0, 1, 2, 3 and 4 ns, show the evolution of the pulse in time as it propagates across the scene. The integration of all frames gives the total path followed by the light, similarly to what can be acquired by an EMCCD camera at maximum gain for an exposure time of 7 s. Credit: Nature Communications 6, Article number: 6021 doi:10.1038/ncomms7021 Laser beams, by their very nature, travel in a straight line from one point to the next, thus they are nearly impossible to see when traveling through normal air. The path of a single beam can be seen very easily, on the other hand if it happens to pass through smoke, or fog—this is because some of the light in the beam runs into particles that cause some photons to veer from their path and strike a viewers eyes. In this new effort, the researchers wanted to see a beam in normal air, which meant having to use special camera equipment.Normal air has some particles in it, dust, etc.—photons that bounce from such particles can make it to a viewer’s eyes, but they are so few and far between that they cannot be seen. To overcome that problem, the team used a single-photon avalanche diode (SPAD) detector with a very high temporal resolution. It takes a picture of a single photon (using a 32×32 pixel grid) and notes its location. The team pointed the SPAD at a beam as it was bounced off mirrors in a box, over and over (ten million times) during a ten minute period. That allowed for capturing all of the collisions and deflections that occurred during that time span. A computer then knitted all the photon hits together and animated the results, giving a video that very clearly shows the laser beam as it is emitted and then bounces off each of the mirrors in the box. The result is both eerie and very cool to watch. More information: Single-photon sensitive light-in-fight imaging, Nature Communications, 6, Article number: 6021 DOI: 10.1038/ncomms7021AbstractThe ability to record images with extreme temporal resolution enables a diverse range of applications, such as fluorescence lifetime imaging, time-of-flight depth imaging and characterization of ultrafast processes. Recently, ultrafast imaging schemes have emerged, which require either long acquisition times or raster scanning and have a requirement for sufficient signal that can only be achieved when light is reflected off an object or diffused by a strongly scattering medium. Here we present a demonstration of the potential of single-photon detector arrays for visualization and rapid characterization of events evolving on picosecond time scales. The single-photon sensitivity, temporal resolution and full-field imaging capability enables the observation of light-in-flight in air, as well as the measurement of laser-induced plasma formation and dynamics in its natural environment. The extreme sensitivity and short acquisition times pave the way for real-time imaging of ultrafast processes or visualization and tracking of objects hidden from view. PausePlay% buffered00:0000:00UnmuteMuteDisable captionsEnable captionsSettingsCaptionsDisabledQuality0SpeedNormalCaptionsGo back to previous menuQualityGo back to previous menuSpeedGo back to previous menu0.5×0.75×Normal1.25×1.5×1.75×2×Exit fullscreenEnter fullscreen Journal information: Nature Communications Explore further (Phys.org)—A team of researchers working at the Institute of Photonics and Quantum Sciences, Heriot-Watt University, in Scotland has developed a method for filming a laser beam as it bounces back and forth between mirrors—in normal air. In their paper published in the journal Nature Communications, the team describes how they did it and share the video they created. © 2015 Phys.org Researchers build reversible tractor beam that moves objects 100 times farther than other efforts PausePlay% buffered00:0000:00UnmuteMuteDisable captionsEnable captionsSettingsCaptionsDisabledQuality0SpeedNormalCaptionsGo back to previous menuQualityGo back to previous menuSpeedGo back to previous menu0.5×0.75×Normal1.25×1.5×1.75×2×Exit fullscreenEnter fullscreen Play Light propagation in air. Credit: Nature Communications 6, Article number: 6021 doi:10.1038/ncomms7021 Though it is not clear just yet if the technique will have any real applications (such as watching plasma develop as ions are heated), the team appears satisfied with their work noting that they were able to achieve their goal. Play Formation and evolution of laser-induced plasma. Credit: Nature Communications 6, Article number: 6021 doi:10.1038/ncomms7021 Citation: Research group figures out a way to film a laser in normal air bouncing off mirrors (w/ Video) (2015, January 29) retrieved 18 August 2019 from https://phys.org/news/2015-01-group-figures-laser-air-mirrors.html This document is subject to copyright. Apart from any fair dealing for the purpose of private study or research, no part may be reproduced without the written permission. The content is provided for information purposes only.
Citation: Cat shelter findings: Less stress with box access (2015, February 8) retrieved 18 August 2019 from https://phys.org/news/2015-02-cat-stress-access.html © 2015 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. Journal information: Applied Animal Behaviour Science More information: Applied Animal Behaviour Science, www.appliedanimalbehaviour.com … 0236-6/abstract?cc=y Out of all those cat videos that keep your eyes glued to the screen far longer than you would care to acknowledge, you may have seen some showing little and big cats trying their best to snuggle into big and too-little cardboard boxes. What makes them so content about being in a box? Scientists have spent much time looking for answers. “Will a hiding box provide stress reduction for shelter cats?” That is one such exploration, published in Applied Animal Behaviour Science, the journal of the International Society for Applied Ethology (ISAE). The three authors, from the Faculty of Veterinary Medicine, University of Utrecht, studied stress in shelter cats and found that hiding boxes reduced stress, at least on the short term. They chose shelters as their investigation site because that is where the stress levels for domestic cats can be serious. The researchers assessed the effect of a hiding box on stress levels of newly arrived cats in a Dutch animal shelter. Ten cats had a box; nine did not. They found a significant difference between the two groups on observation days 3 and 4. The cats with the hiding box were able to recover faster in their new environment.Writing in Wired, Bryan Gardiner took up the topic of why cats love boxes, discussing the researchers’ findings as well as other explorations into the way cats love scampering and even squeezing into boxes. One of the authors of the Dutch cat shelter paper, Claudia Vinke, was quoted in Wired: “Hiding is a behavioral strategy of the species to cope with environmental changes and stressors,” Vinke said in her email. Cornell University’s College of Veterinary Medicine, in their observations about cat shelters and stress, said that “cats benefit greatly from the ability to hide when stressed. In shelters, this can be accomplished in a variety of ways, with a range of costs and benefits.” One type of hiding spot which they recommended was a “hiding box” which they said could be “a cardboard box, a specially designed Hide-Perch-and-Go box, a sturdier plastic box or cage insert, a plastic carrier, or a commercially available “cat den.” The Cornell site said that while cardboard boxes are inexpensive, they cannot be cleaned, and must only be used for one cat before being discarded or recycled. Gardiner in Wired made the point that boxes are not the only enclosures that attract cats; bowls, a bathroom sink, or other enclosures seem to work, too. Gardiner also made the point that cats scramble for such enclosures in a fundamental search not merely to feel psychologically cozy but for heat.”According to a 2006 study by the National Research Council, the thermoneutral zone for a domestic cat is 86 to 97 degrees Fahrenheit. That’s the range of temperatures in which cats are ‘comfortable’ and don’t have to generate extra heat to keep warm or expend metabolic energy on cooling.” Corrugated cardboard, he added, is a good insulator; if the box is a tight squeeze so much the better; it may “force the cat to ball up or form some other impossible object, which in turn helps it to preserve body heat.” A cat’s game of hide and seek
(Phys.org)—A trio of researchers studying gorillas in Karisoke Research Center in Rwanda has reported on a developing trend observed in mountain gorillas—mobs attacking single individuals for unknown reasons. In their paper published in Scientific Reports, Stacy Rosenbaum, Veronica Vecellio and Tara Stoinski describe three mob attacks that have been observed by several human witnesses over the past decade and offer some possible explanations. Credit: CC0 Public Domain Journal information: Scientific Reports More information: Stacy Rosenbaum et al. Observations of severe and lethal coalitionary attacks in wild mountain gorillas, Scientific Reports (2016). DOI: 10.1038/srep37018AbstractIn humans and chimpanzees, most intraspecific killing occurs during coalitionary intergroup conflict. In the closely related genus Gorilla, such behavior has not been described. We report three cases of multi-male, multi-female wild mountain gorilla (G. beringei) groups attacking extra-group males. The behavior was strikingly similar to reports in chimpanzees, but was never observed in gorillas until after a demographic transition left ~25% of the population living in large social groups with multiple (3+) males. Resource competition is generally considered a motivator of great apes’ (including humans) violent intergroup conflict, but mountain gorillas are non-territorial herbivores with low feeding competition. While adult male gorillas have a defensible resource (i.e. females) and nursing/pregnant females are likely motivated to drive off potentially infanticidal intruders, the participation of others (e.g. juveniles, sub-adults, cycling females) is harder to explain. We speculate that the potential for severe group disruption when current alpha males are severely injured or killed may provide sufficient motivation when the costs to participants are low. These observations suggest that the gorilla population’s recent increase in multi-male groups facilitated the emergence of such behavior, and indicates social structure is a key predictor of coalitionary aggression even in the absence of meaningful resource stress. For most of the modern study of gorillas in their native environment, the consensus has been that they are generally docile with one another—there have been observations of males fighting, sometimes to the death, but for the most part, the life of the gorilla was thought to be one of mostly peaceful. But now, it appears that the peace can be disturbed by the occasional mob attack on a single individual or, as the researchers note, two individuals.In the first witnessed attack, back in 2004, Rosenbaum was actually one of the witnesses. She describes the incident as arising seemingly out of nowhere. A single male the team had named Inshuti approached a group of gorillas the researchers had named the Beetsme. After some initial rebuffs, the lone male continued to seek acceptance. Then one of the gorillas screamed—the witnesses could not say if it was Inshuti or a member of the group. That was followed by three adult males chasing Inshuti until they caught him and pinned him to the ground. Soon thereafter, the rest of the Beetsme group arrived and all of them (including females and youngsters) participated in causing harm to Inshuti—from pulling hair to scratching and kicking. The leader of the Beetsme sunk his teeth into the gorilla’s flesh and shook it like a fighting dog. The mob attack continued for just a few minutes, but then stopped just as quickly as it had started. The attackers walked away and Inshuti slunk into the underbrush to attend to his wounds.The researchers report on two other similar incidents, one of which included an attack on Inshuti and another male. They note that mob attacks by other apes, including chimps, is common, as in humans, but until these recent incidents, it was thought gorillas were gentle giants, unlikely to engage in such violence. The team admits they do not know why the gorillas have begun acting like mobs at times but note that it has occurred during a time when the mountain gorilla population has grown due to conservation efforts. 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. Who’s your daddy? If you’re a gorilla, it doesn’t matter © 2016 Phys.org Explore further Citation: Gorilla mobs attacking single individuals suggests new type of behavior for them (2016, November 28) retrieved 18 August 2019 from https://phys.org/news/2016-11-gorilla-mobs-individuals-behavior.html
It is Father’s Day on Sunday, and though it is unfair to pick one day in the middle of the year to show your father unconditional love – why not go with the flow we say!While almost all restaurants in the city have special Father’s Day deals on offer – make sure you pick what your dad likes, not food you want to eat. It is his day – remember? Take daddy for a nice beer and steak dinner or maybe seafood, if that’s his thing!Depending on how much pocket money you have saved, you can also book your father a nice spa day or a day in the golf resorts around the city. Also Read – ‘Playing Jojo was emotionally exhausting’Alternately – a nice shirt and tie or a comfy pair of pure cotton pajamas in this weather could be a very good gift. Throw in a nice perfume for good measure. If your father is the ‘gadgety’ kinds, there are loads of options to pick from, a new phone or the latest Ipod. Alternately you could pick some quirky gifts to brighten up his day. Be it notebooks from Chaap or the latest fad- funky flavoured popcorn from 4700 BC. Or perhaps shot-glasses and Ipad covers, focus on what he likes. If nothing works, make him a card, a nice one, he does enough for you all year round! And wish him Happy Father’s Day from us too!
If side ponytails or braids look perfect with casual wears, fishtail braids or low buns gel well with corporate dressing, says expert and suggests different hairstyles for different occasions.Ishika Taneja, makeup, hair expert suggests hair styles and also advises on choosing right hair accessories to glamorous look. Hairdo with Casual Wear: If you are going out for shopping or movie, opt for hairstyles that go well with natural texture of your hair and require minimum use of hair products. Easy and effortless hairdos such as side ponytails, low chignon knots, and braids complemented with stylish accessories work best during monsoon. You can also let your hair open and backcomb it using a stylish hair band. Also Read – ‘Playing Jojo was emotionally exhausting’ Hairdo with Corporate Wear: A crisp, simple style with a slick finish seems perfect for corporate attire. You can go for high ponytails, side slick, fishtail braids and low buns.If you have shoulder length thick straight hair, you can opt for side-swept ponytail as it’s effortless and looks great with formal outfits. Side-pinned curls, voluminous ponytail and pinned-up ends with headband are other options to choose from. Hairdo with Ethnic Wear: A dishevelled side bun, curls with side partition or teased braids are ideal hair styles that go well with ethnic wear like saris, churidaars and lehengas. You can also go with loose hair pulled to one side with huge accessory adorning the other side. Hair accessory: Decorative combs, barrettes, jewelled clips, colourful pins and headbands are a big hit with women nowadays. It not only transforms your hairstyle, but also makes it look glamorous. Best part about the blingy accessories is that they can be your biggest saviours on a bad hair day.
Hair styling, treatments, pollution and stress can take a toll on your locks and make you look older. So don’t take hair care lightly.Norris Ogario, founder and Creative Director of Ogario London salon, feels hair needs care at every stage in life, reports femalefirst.co.uk. ‘We might not realise or think about it much but our locks can take a bit of a lashing over the years, which is why whatever age you are, you need to look after it,’ Ogario said. Also Read – ‘Playing Jojo was emotionally exhausting’‘Treatments, colours, excessive heat, over-styling, stress, pollutants and even our diet can have a part to play and can take its toll if we aren’t careful,’ he added.Ogario reveals the secret to healthy hair for different age groups.Thirty Plus Thirty plus women are usually busy with career and family. If time is a luxury you can’t afford, go for a good quality haircut. Consult your hairdresser before getting your hair washed. ‘When I talk to a client, I can tell a lot from their mannerisms about how they wear their hair. They might push it to one side, away from the face. It’s important to understand the client so we can create a hairstyle that suits them and their lifestyle,’ said Ogario. Also Read – Leslie doing new comedy special with NetflixForty PlusOnce women reach 40, they often think about getting their hair coloured to cover grey strands. They should go for the ones that are gentle on hair.‘I recommend a vegetable tint, a semi-permanent colour that rinses out over time. They give great, effective results and are much gentler on the hair.’ ‘Use an intensive and nourishing hair mask once or twice a week as this willrestore suppleness and strength,’ he explained.Fifty PlusApart from grey hair, women in fifties usually start experiencing hair thinning. The ones with longer hair should frequently trim their hair.‘Shorter cuts help sustain the strength of the hair, but make sure you have a consultation to work out the best shape for you. A fringe can often be flattering,’ Ogario said.
Kolkata: Giving emphasis on ensuring the safety of people while travelling on highways, Chief Minister Mamata Banerjee said watchtowers and proper surveillance systems would be set up on various stretches in the state at an expenditure of Rs 11 crore from MPLAD.The Chief Minister on Wednesday flagged off 41 ambulances and 25 life-saving critical care ambulances outside Nabanna.Mayor Sovan Chatterjee, who is also the state Fire and Emergency Services minister, Firhad Hakim, the state Urban Development and Municipal Affairs minister, state Youth Services and Sports minister Aroop Biswas, Chief Secretary Malay De and Home Secretary Atri Bhattacharya were also present. Also Read – Heavy rain hits traffic, flightsDuring the flagging off, Banerjee said the ambulances have been bought from MPLAD fund of Trinamool Congress MPs. She further added that besides allotting funds for the same, money was also allotted for watchtowers and bus stands.She further added that 100 bus stands would be constructed along different state highways and Rs 7 crore has been sanctioned from her party MPs’ funds.Watchtowers at different points along the highways will come up along with the installation of surveillance cameras. Around Rs 11 crore has been allocated for both the projects from the MPLAD funds. Also Read – Speeding Jaguar crashes into Merc, 2 B’deshi bystanders killedIt may also be mentioned that Chief Minister Mamata Banerjee had launched the state-wide Safe Drive Save Life campaign and at the same time necessary steps had been taken to develop infrastructure in order to reduce accidents. The campaign has made a huge impact and has been instrumental in bringing down the total number of accidents in the state.Measures were also taken to ensure that vehicles do not remain parked along the National Highways. It may be recalled that illegal parking of vehicles on Durgapur Expressway led to an accident of Trinamool Congress MP Abhishek Banerjee.It may be mentioned that Bengal has witnessed 22 percent reduction in road accidents in the first quarter of 2018 compared to that of the corresponding period in 2016.At the same time, the total number of people killed due to road accidents has also gone down by 18 percent in the same time period. Accidents in the first quarter of 2018 were 15.5 percent less than in the corresponding period in 2017.
The BJP on Saturday said that the “movement for change” has begun in Bihar and announced four simultaneous ‘Parivartan Yatra’ as part of its campaign this month to cover entire state for the forthcoming Assembly polls to seek the mandate of public for it.”The movement for change has started in Bihar in which BJP and NDA are participating together. Our party president Amit Shah launched it by giving green signal to 200 ‘Parivartan Rath’ (chariots of change). We are now going to launch four Parivartan Yatras to cover the entire state this month,” Union Chemical and Fertiliser Minister Ananth Kumar said. Also Read – Need to understand why law graduate’s natural choice is not legal profession: CJIKumar, who is also Bihar in-charge of BJP for Assembly elections said these yatras will be launched on August 12 and will continue till August 28.They will traverse the entire state and visit all 243 constituencies conducting public meetings, establishing direct connect with the voters and appealing to them “to give the mandate of change to BJP and NDA, as well as, opportunity of good governance,” he said. Nitish Kumar launches Delhi unit of Bihar Foundation Facing one of the toughest electoral battles in his political career, Bihar Chief Minister Nitish Kumar on Saturday reached out to migrants from the state in the national capital, inaugurating the Delhi Chapter of Bihar Foundation. Faced with a ruckus by a group of slogan-shouting youths as soon as he rose to speak, Kumar, however, ruled out any “political” motive behind the event.
Kolkata: Work for the third campus of Rabindra Bharati University (RBU) in New Town will begin soon after the Durga Puja. The campus will come up on a plot of 8-acre that has been handed over to the varsity by New Town Kolkata Development Authority at Action Area II. The new campus will have an administrative building and a state of the art students’ hostel.RBU has the highest number of foreign students in eastern India with the present strength being more than 150. Also Read – Rain batters Kolkata, cripples normal lifeA large number of students from the SAARC countries like China, Japan, Sri Lanka, Bangladesh etc take up courses like Arts, Visual Arts and Fine Arts.”These students have to stay as paying guests in different parts of the city. We are concerned about their safety and security but as we have no hostel facilities we can do nothing once they go out of our campus after studies.The new campus will have a state of the art hostel,” said Sabyasachi Basu Ray Chaudhury. Also Read – Speeding Jaguar crashes into Mercedes car in Kolkata, 2 pedestrians killedA senior official of the varsity said the foreign students often face a lot of problem with the food they eat as the places where they stay as paying guests serve normal Bengali food on a regular basis that do not satiatetheir taste buds.”We will have the infrastructure for kitchen facilities at the hostel so that they can cook food of their choice,” the official added.As per plans, the campus will be a green one with a refurbished guest house, an auditorium, a modern gym and facilities for a number of indoor games. Talking about the academics, the RBU V-C said the varsity has plans to start courses on Natural Science and Atmospheric Science on the new campus.”We are also planning to have a Foreign Language Study Centre encouraging research activities. The campus will be fully digitized,” the official maintained.As per plans , the proposed university building will have solar power connection and courses dealing with Fashion Designing, Animation, Architecture will be taught. The campus will also have a state of the art library.It may be mentioned that Chief Minister Mamata Banerjee has plans to develop a part of Action Area II in New Town as an Education Hub. Campuses of various universities have already come up, including St. Xavier’s University, Aliah University, Amity University, Presidency University to name a few.
Kolkata: The shadow of the Sabarimala temple row over the entry of women into the shrine has cast its spell on a local Kali Puja committee which does not allow females to enter its pandal amid protests by scholars. Ever since the worship of the idol began 34 years ago by priests of the Tarapith, a Shakti pith in Birbhum district, women were not allowed to enter the pandal, members of the ‘Chetla Pradip Sangha’ puja committee in southern part of the city told reporters Saturday. “We wish to maintain the rules which lays down that if any woman enters the pandal during puja, there will be a tragedy in our locality. We cannot break the tradition of the past 34 years,” joint secretary of the puja committee Saibal Guha said. The male members of the puja committee and the locality prepare ‘prasad and bhog’ (food) for the deity besides undertaking other tasks. “Our puja committee has women members, but they don’t enter the pandal as they know it might annoy the deity. They are with men in other tasks like bringing the idol to the pandal and join the immersion procession,” another puja committee member Saheb Das said. Indologist Nrisingha Prasad Bhaduri termed such rules as extreme manifestation of patriarchy and misogyny. “Why are they worshipping a goddess then? What the organisers practise has nothing to do with scriptures. There is no rule to prevent women from being present during puja inside a temple,” Bhaduri said. A senior priest and scholar Shambhunath Kritya Smrititirtho said “there is no rule to disallow women inside the premises where the idol is kept.” A local woman devotee Sabita Das, however, has no objection to the practice. “Ever since I came to the area as daughter-in-law of a family 20 years ago, I have seen the practice followed. We don’t want to break the tradition. It is embedded in our faith,” she said.
Kolkata: IIT Kharagpur researchers have devised a decision support system to help maximise the LPG connections in BPL (below poverty line) households, an official statement said. It is a first of its kind for analysis of a national level energy policy, it said. “A team of researchers, led by Manoj Kumar Tiwari of the Department of Industrial and Systems Engineering, has devised a decision support system focusing on the Pradhan Mantri Ujjwala Yojana for maximising the number of LPG connections, particularly in BPL households,” the statement said. A decision support system (DSS) is a computer programme that helps in making sound rational decisions using mathematical programming and operation research techniques. “The DSS for such policies can provide us the exact values of important parameters over the prescribed policy time period, which in turn will help us to take important measures to ascertain the proper functioning (monitoring) of the policy towards the desired goal,” Tiwari said. PMUY, launched in May 2016, aimed to provide five crore LPG connections by 2019 to BPL families with the support of Rs 1,600 to each family. The government has recently revised the target to eight crore LPG connections by 2020. The DSS devised at the IIT uses mixed integer linear programming to mathematically formulate the policy using input parameters, decision variables and their relationships. The mathematical model has found the optimum number of total (BPL) connections required in a region, number of dealerships that need to be commissioned in a region over the policy time frame. The IIT team has done sensitivity analysis with the mathematical model — change in a decision variable with respect to the change in parameter. With this, they can predict not only how the number of household connections can be increased but also the critical region that contributes most in each zone of LPG distribution. Certain areas though have been well covered, such as Maharashtra, Tamil Nadu, Bihar, Rajasthan and West Bengal. The government needs to pay special attention to regions critical to LPG penetration, such as Assam in the Northeastern zone, in order to achieve 100 per cent BPL household penetration, the institute said. This kind of DSS can be developed for various federal and state level policies for various commodities like solar panels distributions, agricultural commodities and so on.
American singer and songwriter Meghan Trainor’s lyrics “Yeah, my momma she told me don’t worry about your size” aptly sums up the Indian fashion industry today, given how designers are taking notice of the plus size segment and adding oodles of style to it. Plus size cannot be ignored, say designers like Falguni and Shane Peacock, Payal Singhal and Monisha Jaising.Falguni and Shane Peacock, who are participating in the fifth edition of the Vogue Wedding Show 2017 luxury bridal exhibition, say, “at times, it seems that the fashion industry really believes all women are the size of those skinny models on the runways”. But that is changing now.”Almost half the women in this country are size 12 or larger, and finally, the clothing industry is taking note. On runways, in stores, even in the pages of magazines, the plus size woman is finally getting some fashion respect – not because the industry has decided it’s okay to be big, but because it can no longer afford to ignore her,” the duo said.Opening up about the economics of the fashion business, Singhal, whose forte is wearability, versatility and comfort, says the industry is finally acknowledging that the demand for larger sizes – just like the frame – is big.Singhal, known for her celebrity clientele like Kareena Kapoor Khan, Sonam Kapoor, Shilpa Shetty Kundra and Sonakshi Sinha, asserts that it is not only about business. “The fashion industry as a community is coming out to endorse body positive images and that’s great as it’s time we take some responsibility and help women accept themselves the way they are versus the stick thin photoshopped model images they see in magazines,” she explained.Gone are the days when stick-thin models used to catwalk on the ramps and make some women sitting in the front row go on a guilt trip. There are active campaigns to promote a healthy body image through fashion shows around the world.With global superstars like Adele, Amy Schumer, Ashley Graham, Stefania Ferrario and Indian celebrities like Vidya Balan and Huma Qureshi owning up their curves, people are getting the confidence to embrace the plus size. Plus size beauty pageants like Hardeep Arora’s Ms Plus Size North India 2017 are being organised in India as well.Ace designer Wendell Rodricks has collaborated with aLL. “The winners from the plus size model auditions chosen were a great mix of different sizes who had varied personalities and walked with absolute poise and confidence,” Rodricks said. He is all in for fashion democracy. “Fashion should be for everyone; no matter the age, colour, size or shape. I intend to break all myths about colours and shapes for voluptuous figures,” Rodricks added.Monisha Jaising, who is also part of the show, feels the fashion world is increasingly counting on “plus-size customers, a demographic that it has long ignored” to fuel growth. “Fashion brands are now shifting their focus on body positivity by designing for a larger range of sizes,” Jaising said, crediting social media for the changing attitudes in the fashion business. “Plus size fashion bloggers too are driving this transformation. They are social advertising at their best! Plus size models and bloggers around the world are the new face of the future of fashion. The plus size revolution definitely cannot be ignored,” she added. Gaurav Gupta, known for his edgy garments, took healthy note of the trend, saying: “In general, women are becoming much more aware about fitness and a lot more girls are now fitter than before. Having said that, there is a parallel trend of easy shaped couture, with silhouettes which work on many more body types.”
Kolkata: The Burdwan Medical College and Hospital on Tuesday performed a complicated operation to offer a new lease of life to a seven-month-old child by bringing out a small piece of vegetable that had been accidentally stuck in her windpipe. The baby was suffering from asphyxia because of it.The expertise of the ENT department of the hospital ensured that the child suffered minimum pain and no blood loss. The child is stable now and under supervision at the paediatric intensive care unit of the hospital. Also Read – Speeding Jaguar crashes into Mercedes car in Kolkata, 2 pedestrians killedAccording to sources, seven-month-old Jessica Dip is the daughter of Jyotiraj Dip and Jyotsnarani Dip, residents of Sainthia in Birbhum. They originally hail from Sambalpur in Odisha. The child had picked up the piece of long bean while her mother was cutting vegetables on Monday morning at around 10 am. She immediately started having breathing problem after putting it in her mouth and was rushed to Sainthia Hospital. But the child’s parents were informed that the hospital does not have the infrastructure to conduct such an operation. Also Read – Bose & Gandhi: More similar than apart, says Sugata BoseShe was referred to the Burdwan Medical College and Hospital and as soon as the couple reached Burdwan, the child was admitted at the paediatric department. The case was soon referred to the ENT department. Head of the ENT department at the hospital Ganesh Gayen said: “The child was getting less than 40 percent of her normal oxygen intake with the piece of long bean being stuck in her windpipe. Immediate operation was necessary to save her. We immediately formed a team from various disciplines and conducted the operation to take out the piece of vegetable from her windpipe. The child is now free from danger.” There has been more than one occasion when the ENT team from Burdwan Hospital has successfully performed similar complicated operations. “But the child’s case was complex due to her age,” a senior official of the hospital said.