Month: August 2019

Selfassembling solar panels a step closer

first_imgThe self assembly process made a device of 64,000 parts in 3 minutes. Image: Heiko O. Jacobs © 2010 PhysOrg.com Explore further The self assembly process. Elements align at the oil/water boundary. The “blank” solar cell has pre-cut places for the elements and is dipped through the boundary. As it is slowly drawn upwards, the elements pop into place. Image: Heiko O. Jacobs. (PhysOrg.com) — Scientists Robert J. Knuesel and Heiko O. Jacobs of the University of Minnesota have developed a way to make tiny solar cells self-assemble. New nanoassembly technique is created Citation: Self-assembling solar panels a step closer (2010, January 14) retrieved 18 August 2019 from https://phys.org/news/2010-01-self-assembling-solar-panels-closer.html More information: Self-assembly of microscopic chiplets at a liquid-liquid-solid interface forming a flexible segmented monocrystalline solar cell, Robert J. Knuesel and Heiko O. Jacobs, PNAS, DOI:10.1073/pnas.0909482107 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. The researchers think they can adapt their method to smaller components and larger assembled devices, and it could be used to cheaply and quickly assemble all kinds of high-quality electronic components on a wide range of flexible or inflexible substrates including plastics, semiconductors and metals. The assemblages could find uses in numerous applications such as solar cells, video displays and tiny semiconductors. The use of this method in solar cell production would reduce the cost considerably since less silicon is needed, and it should also be possible to assemble solar chiplets into transparent, flexible materials, which would extend their range of uses.The paper is published in the Proceedings of the National Academy of Sciences (PNAS). The researchers had previously been unsuccessful in their attempts to make self-assembling electronic components. In large systems gravity can be used to drive self-assembly, and in nanoscale systems chemical processes can be used, but between the two scales, in the micrometer range, it is much more difficult.To overcome the difficulties, Kneusel and Jacobs designed a flexible substrate of a thin layer of copper covered with propylene-terephthalate (PET). Regular depressions the same size as the “chiplets” were etched into the PET layer and then the sheet was dipped into a bath of molten solder, which coated the exposed copper in the etched depressions. Each chiplet consisted of a 20-60 µm silicon cube with one gold face. The silicon sides had a coating of hydrophobic (water-repelling) molecules, while the gold side had a hydrophilic (water-attracting) coating.When the elements were placed in a container containing oil and water, they neatly arranged themselves in a sheet at the boundary between the liquids, with the gold side pointed down to the water layer. The substrate was then pulled slowly up through the boundary like a conveyor belt, and the elements neatly dropped in place in the depressions as the solder attracted the gold side. Accuracy was 98%. The assembly was covered with epoxy to keep the chiplets in place, and then a conducting electrode layer was added.The device was able to assemble 62,000 elements, each of them thinner than a human hair, in only three minutes. The elimination of a dependency on gravity and sedimentation meant the chiplets could be reduced to below 100 micrometers in size. It was important to limit the assembly time to avoid oxidation of the surfaces, which would reduce surface energies and interfere with self-assembly. The water layer had to be acidic, at pH 2.0, and the temperature had to be kept at 95C to keep the solder molten.last_img read more

Physicists propose test for loop quantum gravity

first_imgArtist’s illustration of loop quantum gravity. Explore further (PhysOrg.com) — As a quantum theory of gravity, loop quantum gravity could potentially solve one of the biggest problems in physics: reconciling general relativity and quantum mechanics. But like all tentative theories of quantum gravity, loop quantum gravity has never been experimentally tested. Now in a new study, scientists have found that, when black holes evaporate, the radiation they emit could potentially reveal “footprints” of loop quantum gravity, distinct from the usual Hawking radiation that black holes are expected to emit. More information: A. Barrau, et al. “Probing Loop Quantum Gravity with Evaporating Black Holes.” Physical Review Letters 107, 251301 (2011). DOI: 10.1103/PhysRevLett.107.251301 Citation: Physicists propose test for loop quantum gravity (2012, January 3) retrieved 18 August 2019 from https://phys.org/news/2012-01-physicists-loop-quantum-gravity.html Journal information: Physical Review Letterscenter_img In this way, evaporating black holes could enable the first ever experimental test for any theory of quantum gravity. However, the proposed test would not be easy, since scientists have not yet been able to detect any kind of radiation from an evaporating black hole. The scientists, from institutions in France and the US, have published their study called “Probing Loop Quantum Gravity with Evaporating Black Holes” in a recent issue of Physical Review Letters.“For decades, Planck-scale physics has been thought to be untestable,” coauthor Aurélien Barrau of the French National Institute of Nuclear and Particle Physics (IN2P3) told PhysOrg.com. “Nowadays, it seems that it might enter the realm of experimental physics! This is very exciting, especially in the appealing framework of loop quantum gravity.”In their study, the scientists have used algorithms to show that primordial black holes are expected to reveal two distinct loop quantum gravity signatures, while larger black holes are expected to reveal one distinct signature. These signatures refer to features in the black hole’s energy spectrum, such as broad peaks at certain energy levels.Using Monte Carlo simulations, the scientists estimated the circumstances under which they could discriminate the predicted signatures of loop quantum gravity and those of the Hawking radiation that black holes are expected to emit with or without loop quantum gravity. They found that a discrimination is possible as long as there are enough black holes or a relatively small error on the energy reconstruction.While the scientists have shown that an analysis of black hole evaporation could possibly serve as a probe for loop quantum gravity, they note that one of the biggest challenges will be simply detecting evaporating black holes. “We should be honest: this detection will be difficult,” Barrau said. “But it is far from being impossible.”He added that black holes are not the only possible probe of loop quantum gravity, and he’s currently investigating whether loop quantum gravity might have signatures in the universe’s background radiation.“I am now working on the cosmological side of loop quantum gravity,” Barrau said. “This is the other way to try to test the theory: some specific footprints in the cosmic microwave background might be detected in the future.” Copyright 2012 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. Escaping gravity’s clutches: The black hole breakoutlast_img read more

Google might launch Drive for cloud storage soon

first_img © 2011 PhysOrg.com Explore further Citation: Google might launch Drive for cloud storage soon (2012, February 12) retrieved 18 August 2019 from https://phys.org/news/2012-02-google-cloud-storage.html More information: online.wsj.com/article/SB10001 … 211961645711988.html Google, as observers already point out, has significant “stickiness” with an array of services surrounding documents and communications; its extension into cloud storage is seen as important to watch.Drive will allow the user to store files and retrieve the files from Internet-connected devices, be it smartphones, tablets, or any other. The launch is reportedly planned for any time soon—possibly in the coming weeks.Information that can be Drive-stored is to include photos, documents, and videos, which would land on Google’s servers. This type of online storage system sounds familiar to those familiar with Dropbox, which has enjoyed success. Dropbox has 50 million users, according to reports, and similarly allows users to store photos, documents and other material so users can always access them from PCs, smartphones, or other devices. Google and Dropbox also bear resemblance in pay models–Google’s Drive service will be free, but users who store large amounts of data will have to pay.Similarly, Dropbox offers 2GB for free but collects $9.99 per month from customers who want 50 GB of data per month and Dropbox charges $19.99 per month for 100GB.Apple offers iCloud and Microsoft, SkyDrive, but much of the press attention is focusing on Dropbox and what Google’s entry might do to threaten the popularity of Dropbox.Another question being posed is whether Google’s business executives will be content with simply a tiered subscription payment model or whether the company will be getting into the more lucrative business of scanning the user’s data for the purpose of sending targeted ads. This might ruffle watchdog groups sensitive to threats to privacy.Lastly, there is the all-familiar question about cloud storage versus maintaining security for large businesses. Some cloud-computing watchers worry over the idea of employees storing certain information on a service that the companies cannot directly control. Ensuring security measures to automatically stop people from sharing confidential documents has been one suggestion in the ongoing conversation about cloud services and security.However, if Dropbox, which enables enabled iPads, Android phones and PCs to work together, is any indication, a number of businesses do feel comfortable about file-sharing services from Dropbox. According to a report last year in The New York Times, “millions” signed up with their work e-mail addresses to Dropbox and the company estimated that at least one million businesses used the service.Yet another company, Box.net, has had success in targeting business customers by spelling out advantages of using its file-sharing services without incurring headaches over compromised security. Box.net tells customers that “protecting your corporate content is our top priority.” The company says it has invested heavily in security and resiliency at its data centers.center_img 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. Google adds storage to sweeten online office suite (PhysOrg.com) — Google’s next big move, according to the Wall Street Journal, is a cloud storage service called Drive. Hardly first to the plate, Google is simply catching up to introducing its cloud repository idea for mobile users. Apple, Microsoft, and Dropbox are known for their services, but stories about anticipated Google launches generally stir the waters and seed lots of news items and bloggers’ posts. last_img read more

Researchers build model that may explain how plate tectonics got its start

first_img Geologic study suggests Earth’s tectonic activity peaked 1.1 billion years ago (Phys.org) —Two researchers, David Bercovici of Yale University and Yanick Ricard with the University of Lyon, have together used mathematical modeling to help explain how it was that our planet came to have tectonic plates and why they behave the way they do today. In their paper published in the journal Nature, the pair have explained how they performed mathematical analysis on observations of rocks today and combined data taken from prior theories to come up with a new model that might reflect Earth’s history during the first billion years of its existence. Explore further Journal information: Nature Play An idealized simulation showing how plate-tectonic boundaries (including complex ones) emerge because of inherited damage following a shift in plate-tectonic driving forces; in this case the shift is similar to that which caused the Emperor-Hawaiian Bend in the Pacific. Credit: David Bercovici Bercovici and Ricard’s model starts with the idea that very early Earth was covered in hot mushy material. As that material began to cool, some parts or regions would cool faster or slower than others—the cooler parts would then naturally sink. Prior studies have shown that when such types of material sink, the surface becomes slightly deformed. With rock, scientists already known that deformations lead to weaker rock and subsequently smaller grains—and weaker rock would of course lead to additional deformations which suggests a feed-back loop would have evolved. On a planet-wide scale that would mean that weak zones would form at boundaries giving rise to the evolution of tectonic plates. Over billions of years, as the planet continued cooling, the result would be plate tectonics. © 2014 Phys.org The same model can be used to explain why other planets in our solar system didn’t develop plates, and thus the conditions necessary for the development of life. Venus, for example, the numbers suggest, was simply too hot. If pre-plates developed, the deformations would heal due to the high temperatures, preventing the development of actual plates and possibly an atmosphere conducive to life. The surface of planet Earth is covered in several moving plates which scientists believe is one of the major reasons that life was able to evolve and survive. But how the plates came to exist and wound up behaving the way they do today, has been mostly a mystery. In this new effort, the model built by the researchers offers one possible explanation.It all comes down to grains of rock, they suggest—the smaller the grain, the weaker the rock. One type of rock, known as mylonite has been found to exist at every plate boundary on the planet, suggesting it has something to do with plate tectonics—when found, it is generally deformed with very small grains.center_img 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 More information: Plate tectonics, damage and inheritance, Nature (2014) DOI: 10.1038/nature13072AbstractThe initiation of plate tectonics on Earth is a critical event in our planet’s history. The time lag between the first proto-subduction (about 4 billion years ago) and global tectonics (approximately 3 billion years ago) suggests that plates and plate boundaries became widespread over a period of 1 billion years. The reason for this time lag is unknown but fundamental to understanding the origin of plate tectonics. Here we suggest that when sufficient lithospheric damage (which promotes shear localization and long-lived weak zones) combines with transient mantle flow and migrating proto-subduction, it leads to the accumulation of weak plate boundaries and eventually to fully formed tectonic plates driven by subduction alone. We simulate this process using a grain evolution and damage mechanism with a composite rheology (which is compatible with field and laboratory observations of polycrystalline rocks1, 2), coupled to an idealized model of pressure-driven lithospheric flow in which a low-pressure zone is equivalent to the suction of convective downwellings. In the simplest case, for Earth-like conditions, a few successive rotations of the driving pressure field yield relic damaged weak zones that are inherited by the lithospheric flow to form a nearly perfect plate, with passive spreading and strike-slip margins that persist and localize further, even though flow is driven only by subduction. But for hotter surface conditions, such as those on Venus, accumulation and inheritance of damage is negligible; hence only subduction zones survive and plate tectonics does not spread, which corresponds to observations. After plates have developed, continued changes in driving forces, combined with inherited damage and weak zones, promote increased tectonic complexity, such as oblique subduction, strike-slip boundaries that are subparallel to plate motion, and spalling of minor plates. An idealized simulation showing how plate-tectonic boundaries (including complex ones) emerge because of inherited damage following a shift in plate-tectonic driving forces; in this case the shift is similar to that which caused the Emperor-Hawaiian Bend in the Pacific. Credit: David Bercovici Citation: Researchers build model that may explain how plate tectonics got its start (2014, April 7) retrieved 18 August 2019 from https://phys.org/news/2014-04-plate-tectonics.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. An idealized simulation showing how plate-tectonic boundaries (including complex ones) emerge because of inherited damage following a shift in plate-tectonic driving forces; in this case the shift is similar to that which caused the Emperor-Hawaiian Bend in the Pacific. Credit: David Bercovicilast_img read more

Metalcatalyzed addition of saturated carbon into CC bonds A relevant reaction for

first_img Carbanion analogs derived from naturally-occurring aldehydes (Phys.org)—Type II polyketides are a class of compounds found in nature as secondary metabolites derived from microorganisms. Their complex structures are characterized by fused polycyclic aromatic rings decorated with a profusion of ketones and hydroxyl groups. Many common antibiotics, anti-fungal, and anti-cancer drugs are type II polyketides or are derivatives of these naturally-occurring compounds. However the “laboratory synthesis” of type II polyketides is often challenging; as in living systems, it is a highly selective multi-step enzymatic process. © 2017 Phys.org More information: Matthias Bender et al. Ruthenium-catalyzed insertion of adjacent diol carbon atoms into C-C bonds: Entry to type II polyketides, Science (2017). DOI: 10.1126/science.aao0453AbstractCurrent catalytic processes involving carbon-carbon bond activation rely on π-unsaturated coupling partners. Exploiting the concept of transfer hydrogenative coupling, we report a ruthenium(0)-catalyzed cycloaddition of benzocyclobutenones that functionalizes two adjacent saturated diol carbon-hydrogen bonds. These regio- and diastereoselective processes enable convergent construction of type II polyketide substructures. Researchers from the University of Texas led by Professor Michael J. Krische have developed a ruthenium-catalyzed cycloaddition of benzocyclobutenones and diols that directly deliver substructures found in diverse type II polyketides. Their catalytic reactions involve successive insertion of saturated diol carbon-hydrogen (C-H) bonds into a carbon-carbon (C-C) bond by way of a ruthenacycle intermediate. Their report appears in Science.This research builds on prior studies by this group on metal-catalyzed C-C bond forming reactions of alcohols via hydrogen transfer—a modern twist on carbonyl addition chemistry. Whereas classical carbonyl additions typically involve the reaction of pre-formed organometallic reagents with an aldehyde or ketone (e.g., a Grignard reaction), in the current paper these reactive species are generated transiently and in duplicate. The ruthenium catalyst inserts into a stained C-C bond to form a ruthenacycle bearing TWO carbon-ruthenium bonds, and the catalyst converts the diol to a transient diketone. These species engage in double-carbonyl addition that results in cycloaddition. The net result is the formal insertion of two saturated diol C-H bonds into a saturated C-C bond.As a model reaction to test their concept, the authors reacted benzocyclobutenone with trans-cyclohexane 1,2-diol in the presence of their ruthenium catalyst. After tweaking the reaction conditions, they obtained an 88% yield of the tricyclic product bearing a bridgehead diol, which formed exclusively as the syn-stereoisomer. To examine the versatility of their conditions, they reacted a range of benzocyclobutenones with a variety of 1,2-diols. Several of the diols tested had fused rings. This resulted in the formation of cycloadducts with tetracyclic substrates found in several type-II polyketides, including angucycline natural products with congested “bay-region” architectures. Notably, each of the reactions displayed complete regio- and stereoselectivity. Additionally, the reaction tolerated halide substitution on the benzene ring allowing for further functionalization. Studies to elucidate the reaction mechanism showed that the cycloaddition can be performed in a redox-independent manner. That is, the benzocyclobutenone can react with a diol, a ketol, or a dione producing the same product as a single regio- and stereoisomer. While the reaction of the diol is oxidative and requires a slight excess of benzocyclobutenone, the reaction of the ketol is redox-neutral and can be performed with equal amounts of benzocyclobutenone and ketol. The reductive reaction of the dione requires the addition of 2-propanol to act as a reductantBeyond broadening access to type II polyketides, the reactivity embodied by these studies has broader implications in the field of chemical synthesis. Dr. Michael Krische told PhysOrg, “In contrast to progress recently made in the field of C-H activation, the development of catalysts that modify C-C sigma-bonds has lagged behind, and is largely restricted to intramolecular reactions that insert tethered π-bonds, often requiring directing-groups. Hydrogen-transfer offers a broad, new approach to the functionalization of C-C bonds using abundant, renewable alcohols as coupling partners.” 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.center_img Journal information: Science Ruthenium-catalyzed cyclobutenone-diol [4+2]cycloaddition via C-C bond activation: A gateway to type II polyketide natural products. Credit: (c) Science (2017). DOI: 10.1126/science.aao0453 Explore further Citation: Metal-catalyzed addition of saturated carbon into C-C bonds: A relevant reaction for the synthesis type II polyketides (2017, September 15) retrieved 18 August 2019 from https://phys.org/news/2017-09-metal-catalyzed-addition-saturated-carbon-c-c.htmllast_img read more

Diffusiophoresis found to be critical factor for getting clothes clean

first_img More information: Sangwoo Shin et al. Cleaning by Surfactant Gradients: Particulate Removal from Porous Materials and the Significance of Rinsing in Laundry Detergency, Physical Review Applied (2018). DOI: 10.1103/PhysRevApplied.9.034012ABSTRACTRemoving particles from fibrous materials involves loosening via surfactants followed by particle transfer in a flow. While flow advection is commonly believed to be the major driver for pore-scale transport, small pores within the fabric do not allow any significant fluid flow inside them, thus significantly reducing the role of advection. However, rinsing the fabric with fresh water naturally establishes a surfactant gradient within the pore space, providing a suitable environment for particles to undergo diffusiophoresis. We demonstrate that this mechanism can remove particles from deep within fabric pores at an accelerated rate. The nonlinear aspect of diffusiophoresis significantly prolongs the lifetime of the phoretic motion beyond the naive solute diffusion time scale during rinsing, allowing long-lasting, continuous removal of particles. Moreover, owing to the fine balance between chemiphoresis and electrophoresis for particles in anionic surfactant concentration gradients, we show that the particle removal is sensitive to the counterion mobility, suggesting a simple route to control the effect. We thus claim to have resolved the “stagnant core problem”—a long-standing mystery in laundry detergency—and have identified a physicochemical approach to particle transport in fibrous media with broad applicability. A team of researchers with members from the University of Hawaii, the Unilever company and Princeton University has found that the critical factor involved in cleaning clothes in a washing machine is a phenomenon called diffusiophoresis, a type of diffusion caused by electric fields, combined with chemophoresis, diffusion caused by differences in concentration gradients. They have published their findings in the journal Physical Review Letters. 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 Explore further Play Stained cotton cleaned with detergent and then placed in a swirling bath of fresh water (left) gets clean much faster—thanks to the strong detergent gradient leading to diffusiophoresis—than the same fabric rinsed with detergent-filled water (right). (Video is sped up by 5x.). Credit: Physical Review Applied (2018). DOI: 10.1103/PhysRevApplied.9.034012 Journal information: Physical Review Letters Citation: Diffusiophoresis found to be critical factor for getting clothes clean (2018, March 23) retrieved 18 August 2019 from https://phys.org/news/2018-03-diffusiophoresis-critical-factor.htmlcenter_img © 2018 Phys.org Cleans better than the leading brand. Rinsing soapy, stained cotton with fresh water (right) works far better than rinsing with detergent-filled water (left). The difference is that fresh water produces detergent gradients that draw out dirt particles. Credit: Physical Review Applied (2018). DOI: 10.1103/PhysRevApplied.9.034012 Panning for silver in laundry wastewater Humans have probably been washing their clothes for as long as they have been wearing them. The typical process generally involves swishing the clothes in water containing some type of detergent, followed by rinsing with clean water. Interestingly, despite this long history, it is unclear how, exactly, clothes become clean from this regimen. In this new effort, the research team conducted experiments in the lab to figure it out.Stains, the researchers note, are usually due to staining agents infiltrating into small pores in fabric via capillary action. In order to clean them, a liquid must be able to make its way into the pore and then somehow pull out the staining agent. To learn more about how this process works, the researchers created material with tiny tubes 10 microns in diameter to serve as a sort of fabric—tiny polystyrene balls served as the staining agent. The researchers then “stained” their fabric and filmed the action with a microscope as the material was cleaned.The team reports that the water with the detergent was unable to infiltrate all the way into the pore, but because the detergent contained ingredients that prevented the material from repelling water while also attracting the staining agent, the stain was primed for removal. When the water containing detergent was replaced with clean water, the staining agent was pulled from the pores due to chemophoresis. Interestingly, they found that if they tried rinsing the material with detergent-bearing water, chemophoresis did not occur and the stain remained in place. 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

NTPC to bring down coal import bill to nil in 5 years

first_imgState-run NTPC is looking at bringing its coal import bill to ‘zero’ in the next five years and will rely on the fossil fuel made available by Coal India and the company’s own mines.The power major is one of the country’s largest consumers of coal. “Our aim is to have zero import of coal, and manage with the coal from Coal India sources or our own mines,” NTPC CMD Arup Roy Choudhury told PTI in an interview.When asked about the timeframe in which the PSU plans to have nil coal imports, Choudhury said, “You can say in the next five years.” NTPC ventured into coal mining as part of its backward integration process for fuel security. The company has been allotted 10 coal blocks including Chatti-Bariatu, Chatti-Bariatu (South) and Kerandari in Jharkhand, Dulanga in Odisha and Talaipalli in Chhattisgarh. Its another block — Pakri-Barwadih — in Jharkhand is likely to commence coal production by the end of this calender year and the remaining mines subsequently. “Pakri-Barwadih will come this year (2015) and others later,” Choudhury said. NTPC imported close to 16 million tonnes (MT) of coal in the just-concluded fiscal compared to 10 MT in 2013-14. Meanwhile, the PSU, which is also the country’s largest power producer, is establishing 4,000 MW imported coal-based thermal power plant at Visakhapatnam district in Andhra Pradesh at an investment of about Rs 20,000 crore. NTPC’s present installed capacity is 44,398 MW comprising 39 generating stations.last_img read more

Three incidents of fire in city none injured

first_imgKolkata: Fire broke out at three places in the city on Saturday and Sunday. None was, however, hurt in these fire incidents.According to police, on Saturday night around 11:45 pm, fire broke out inside a meter box near the emergency ward of Bangur Institute of Neurology.As the impression of recent fire incident at Calcutta Medical College is still on the minds of people, the patients got panic-stricken.The relatives of the patients were waiting eagerly thinking if there keens needed to be shifted elsewhere. Also Read – Rain batters Kolkata, cripples normal lifeBut nothing such happened as one fire tender quickly reached the spot and doused the flames within 15 minutes. It is assumed that the fire occurred due to some electrical disorder.Another fire incident occurred on the top floor of a six-storied building on Park Street. At around 11:30 pm on Saturday, a fire broke out at the office of a herbal product company. The fire spread to the whole office immediately.Four fire tenders were pressed in to action. While firefighters were trying to put off the fire, a portion of the building was evacuated for safety reasons. The owner of the building was also informed. Also Read – Speeding Jaguar crashes into Mercedes car in Kolkata, 2 pedestrians killedAfter almost two hours at around 1:25 am, the fire was controlled. In this case as well, the fire brigade personnel assumed the fire might have occurred due to an electrical disorder.In another incident early on Sunday morning, a moving light goods vehicle caught fire on Belvedere Road near Alipore zoo.At around 5:05 am, the driver of the vehicle felt the heat while driving. Almost immediately he noticed smoke billowing out of the frontal part of the vehicle.He stopped the vehicle and got down without losing a second. After getting off from the vehicle, he informed the police and fire brigade.One fire tender doused the fire within half an hour. The damage and cause of fire is yet to be ascertained.last_img read more

Girl goes missing after falling into river at Haroa

first_imgKolkata: A girl went missing after falling into river Bidyadhari at Haroa in North 24-Parganas. The incident took place on Wednesday. Police said that the girl was playing on the bank of the river with her sister and another boy, who is her neighbour. Preliminary investigation has revealed that the girl had slipped and accidentally fell into the river when she went to take water from the river. The two others also jumped into the river to save her. But none of them could return to the bank due to the high tide. Also Read – Rain batters Kolkata, cripples normal lifeSome boatmen found them crying for help and took necessary steps to save them from getting washed away by the high tide. The boatmen managed to rescue two of them with one remaining missing. The police were informed about the matter. Policemen from the local police station went to the spot and initiated rescue work. Later, officers of the Disaster Management Group (DMG) also stepped into action and took all necessary measures to find the girl. Many people gathered at the bank of the river when they came to know about the incident.last_img read more

Calcutta Medical College Hospital performs heart transplant on 38yearold patient

first_imgKolkata: The Calcutta Medical College and Hospital (CMCH) is the first government-run hospital in the state to perform a heart transplant on a 38-year-old man who had been undergoing treatment here at the hospital following severe heart-related ailments.It was learnt that Chief Minister Mamata Banerjee has also congratulated the hospital authorities for their achievement. Incidentally, it may be mentioned here that CMCH is the first medical college and hospital in the city obtaining the clearance from the state Health department in June this year. The state Health department officials inspected the CMCH and examined the infrastructure available to carry out such a surgery. A certificate of registration was issued to the Asia’s oldest medical college which will remain valid for five years from the date of issuance of license. Also Read – Rain batters Kolkata, cripples normal lifeOne Saikat Lattu (30), a resident of Pujali in South 24-Parganas, was declared brain dead at SSKM Hospital on Friday. As the family members of the victim agreed to donate his organs, the hospital authorities informed the matter to the Regional Organ and Tissue Transplant Organisation (ROTTO) which allocated the heart to the CMCH after it came to know that one patient admitted at the hospital required a heart transplant. The SSKM doctors retrieved the heart from the victim after his father, Swadesh Lattu, gave his consent for the same. Also Read – Speeding Jaguar crashes into Mercedes car in Kolkata, 2 pedestrians killedThe heart was taken to the CMCH from SSKM within eight minutes through a green corridor felicitated by the city police on Saturday morning. A 12-member team of doctors was constituted at the CMCH to carry out the surgery. According to the hospital authorities, the heart was successfully transplanted on Rakhal Das (38) who had serious heart ailments for a long time. He has been kept under observation for the next 72 hours. The city has seen a spurt in organ donation in recent times due to the state government’s drive for awareness about deceased donor organ transplants. It can be said that SSKM Hospital has performed a series of liver and kidney transplants in the past two years but the CMCH has achieved a significant milestone by successfully conducting the heart transplant on Saturday.last_img read more

Minibus catches fire at Dufferin Road no casualty reported

first_imgKolkata: A mini bus caught fire on Monday afternoon on Dufferin Road. The passengers were immediately evacuated and within a minutes the fire spread all over the bus. Later, one fire tender doused the flames within half an hour. No casualtywas reported. According to the sources, around 12 pm on Monday, a mini bus of Metiabruz-Howrah route was moving towards Howrah along Dufferin Road. Near Fort William, some passengers got a burning smell. Within minutes, some passengers noticed smoke coming out from the engine. Also Read – Rain batters Kolkata, cripples normal lifeOn seeing smoke spreading inside the bus, the passengers became panic stricken and started screaming. The driver immediately stopped the bus and asked the passengers to abandon it. Just after the passengers got down, the flames spread all over the bus standing middle of the road. Nearby traffic police personnel rushed there. The fire brigade was also informed. One fire tender was pressed in to action and the fire was controlled within half an hour. Also Read – Speeding Jaguar crashes into Mercedes car in Kolkata, 2 pedestrians killedVehicular movement on Dufferin Road and Mayo Road were affected and traffic congestion occurred. Around 12:30 pm, after the fire was doused, vehicle movement commenced on Dufferin Road slowly as the bus was still there. Around 1 pm, police removed the bus from Dufferin Road and towed it to Maidan police station. It is suspected that the fire occurred due to a mechanical glitch. Sources informed that forensic experts will examine the bus to identify the reason behind the incident.last_img read more

Scriptural Musical Discourse held at the Capital

first_imgVishwanath family mesmerized the music lovers with the scintillating ‘Scriptural Musical Discourse’ at Muktodhara, Delhi recently. The event organised by Pracheen Kala Kendra had Jugalbandi sessions held among the family members of the Vishwanath family, which comprise of some acclaimed and eminent artists. The strings of Lalitha Veena, drums, keyboard and melodic vocal recital, all together created ripples of music waves which stunned the listeners at the auditorium. Also Read – Add new books to your shelf Vishwanath Family Band, “Ramayani”, consist of eminent artists like Acharaya L.R. Vishwanath, a scriptural musical exponent and Bhanumathy Vishwanath, a cultural scholar from the Ministry of Culture, Government of India. Apart from them, eminent vocalist on the musical exposition, Akshyaa and Amrutaa Vibho – twin daughters of Bhanumathy Vishwanath couple and graduates of the Trinity College (London) – complete the band. The siblings are trained to play keyboard and drums respectively, by Casio Brand Ambassador Ranjit Ahuja. Also Read – Over 2 hours screen time daily will make your kids impulsiveThe Vishwanath family band presents the discourse on the Ramayana and Devi Mahatmiyam/ Durga Saptashati/Chandi Mahatmiyam in English, Hindi, Tamil and spoken Malayalam and Bengali across the Globe.The programme based on ‘Sundar Kaand’, was a tribute to “Surya” – Sun God – and coincided with Chatt puja. The puja is performed as oblations to the Sun God mainly in Bihar and Uttar Pradesh but is known all across the country. Lord Ram belongs to the lineage of the Sun God; Suryavansh or Raghuvansh. Every deity adores the Sun God and holds this King of the Celestial Galaxy in the highest reverence. Saambh, Son of Lord Krishna, is credited for having built a dozen Sun temples to get cured of Leprosy. Vishwanath family was in tremendous form and enthralled the audience with their sheer virtuosity, deft handling of the raga, taans, and tihais. The vocal and instrumental techniques, the traditional purity, modern drum techniques etc. were on full display throughout their performance. Towards the end of the event, an interesting sawaal-jawaab session thrilled the audience to the fullest.last_img read more

Celebrating cultural renaissance

first_imgA premium show of art featuring a cultural renaissance of our times is being organized by the Lexicon Art Gallery at the Visual Art Gallery, India Habitat Centre, New Delhi. Known for their penchant for displaying an astute selectivity in their choice of artists, this event, titled ‘Manthan’, features the works of legends such as Satish Gujral, Jogen Chowdhury, Jangarh Singh Shyam, Thota Vaikuntam, Seema Kohli, Vinita Dasgupta, Vishal Joshi, Ashish Tyagi, Gurudas Shenoy, Laxman Aelay, Paramesh Paul, Rabin Mondal, Ramesh Gorjala, Ratan Saha, Sujata Achrekar, Sunil Das, among others. The event will be held from May 25 – 28 Also Read – Add new books to your shelfOn display are early works from Sunil Das’ sixties period, when he created his iconic ‘bulls’ series. Also, there is an ample variety of sculptures including a six-foot sculpture by Ashish Tyagi. The attractive sketches of Gouri Vemula are a discreet merger of life and its philosophy, while a fiber cast painted cow sculpture by Seema Kohli, attracts visitors by its colorful composition. Mingling contemporary and tribal on the platform are works by the legendary Gond master, late Jangarh Singh Shyam. Also Read – Over 2 hours screen time daily will make your kids impulsiveThe period of the paintings selected for the exhibition has been consciously restricted to the sixties genre so that viewers are given a chance to review the art in terms of its historicity. While the works are not directly related to events and trends of the era under view, their combined effort at artistry exudes a growing originality and individual expressiveness evident through the works.Besides providing a glimpse of the era under the display, the exhibition has also handpicked some outstanding creations of the time, that are worth a special mention.last_img read more

A star studded event

first_imgDelhi opened it’s doors for the first time to the ‘Diorama film festival’. The opening night was stellar with the presence of industry veterans like Randhir Kapoor and Chintoo kapoor, Rahul Rawael, along with the show director Manoj and his son Kunal Shrivastav .Spotted amongst them was producer/actor turned author Pooja Misra in a sparking jumpsuit with a gorgeous champagne fur coat. There is no denial that she was the head turner at Siri Fort auditorium . Also Read – Add new books to your shelfThe author has been successfully running a production house which has churned out a web series called, ‘Lovesutra’ which had four million downloads on Hungama play app besides trending on it.Pooja then went on to make a tv show called, ‘Abhi to party shuru hui hai’ on e24 Bollywood news channel for four months.She is now doing pre-production for her mainstream feature film called Jud in which she debuts as a main lead actress which is slotted to go on floors in March 2019.last_img read more

A literary treat for Delhiites

first_imgCome February, Delhi will once again witness some of the most creative writers of our times, sharing their most interesting experiences. Delhi Literature Festival, which is entering into the seventh edition this year, will be held from February 8 – 10, 1 pm to 8 pm, at Dilli Haat. The festival was started in the year 2013, with the objective of inculcating good old habit of book reading and promoting tourism.In the past years, it has witnessed active participation from popular authors and writers including Ashok Bajpai, Ashok Chakradhar, Ankit Lal, Ashwin Sanghi, Anna Vetticad, Ashish Chaudhary, Blossom Kochhar, Christopher Doyle, Rakhshanda Jalil, Ravinder Singh, Munawwar Rana, Shashi Tharoor, Mani Shankar Aiyar, amongst others. Also Read – Add new books to your shelfProminent publishers including Ajay Mago – Om Books International, Swati Daftuer – Commissioning Editor Harper Collins, Milee Ashwarya, Editor-in-Chief Penguin Random House and Simran Khara, CEO Juggernaut have actively participated at the Delhi Literature Festival. This year, the literary extravaganza will be officially supported by Department of Art, Culture and Language, Government of NCT of Delhi, Hindi Academy and Sahitya Kala Parishad. The organisers have closely worked with all the leading book publishers. Also Read – Over 2 hours screen time daily will make your kids impulsiveThe seventh edition is expected to be bigger and more exciting with leading authors including Amit Lodha, Novoneel Chakraborty, Ravinder Singh, Madhavi Menon, Ruskin Bond, Pallavi Kamakshi Rebbapragada, Jonathan Gil Harris, Dr Shashi Tharoor, Prasoon Joshi, Manoj Muntashir, S Y Quraishi, Rajdeep Sardesai, Vir Sanghvi, Purushottam Agrawal, Malashri Lal,Dr Mridula Tandon, Moein Shadad, Tarkash Pradeep, Taruna Mishra, Meenakshi Jijivisha, Irshad Khan Sikandar, Valay Singh, Victor Kalyan Ghose being lined up.last_img read more

Floodlike situation hits families inundates lowland areas

first_imgKolkata: Incessant rainfall since Saturday has led to a flood-like situation in and around Balurghat. Lowland areas of Atreyee Colony have been inundated. Around 50 families were drastically hit due to the flood-like conditions. Two-hundred people, including women and minors, were rendered homeless after a sudden spate in river Atreyee and connecting rivers in northern parts of north Bengal and Bangladesh.”Atreyee has been in spate due to heavy showers. Most of the houses located in low land areas were submerged in Atreyee Colony. We have requested the administrative officials to arrange drinking water and food for us,” said a local Sujit Sarkar. Also Read – Rs 13,000 crore investment to provide 2 lakh jobs: MamataAround 40 to 50 bighas of agricultural land at Gopalpur in Balurghat block were partly or fully submerged due to the sudden rise in water-level of Atreyee. A large part of Dakra under Chalkvrigu gram panchayat was inundated and 50 families were hit. There was flood conditions in Kumarganj, Gangarampur and Hili due to the spate in Punarbhava and Tangan. Approximately, 150 families were affected. According to the irrigation department officials, the rate of receding trend is very low because almost all rivers are still in spate due to continuous rainfall in north Bengal and Bangladesh. Senior district administrative officials and district irrigation department officials feel the situation may turn critical if the region receives further heavy rainfall in the next 48 hours. “The situation may deteriorate further if the region receives more rains in the next 48 hours,” said an irrigation officer. According to sources, rivers Tangan and Punarbhaba have damaged banks and embankments in several parts of Gangarampur and Kushmandi. Both the rivers have changed its course in different areas, owing to heavy silt deposits in riverbeds, damaging existing flood protection works. People residing close to rivers have been alerted about the rise in water-level. Residents have also been advised to avoid venturing into rivers Punarbhaba and Atreyee due to the heavy current in water. Balurghat municipal authority has taken measures to tackle the situation. The affected families were shifted to Utsab Bhavan and they were provided drinking water.last_img read more

The Morbid and Sinister Truths Behind Popular Nursery Rhymes

first_imgHumpty Dumpty, Jack and Jill, Three Blind Mice! Even as adults, years after hearing and learning them as young children, we can all remember these classic nursery rhymes. In many cases, even after going decades without hearing them, we still know all the words. They’re fun little sing-a-longs for little kids at school, each with their own amusing characters and cute stories to tell. Or at least that’s how they seem.Humpty Dumpty, shown as a riddle with answer, in a 1902 Mother Goose story book by William Wallace DenslowWhen we actually take the time to examine some of the words in these classic nursery rhymes and start to investigate how they came about, the harrowing reality of many of these cute little poems begins to be unveiled.In truth, a lot of those seemingly innocent nursery rhymes you used to love as a child and have perhaps taught your own kids over the years, have quite dark backstories or meanings behind them.Mary, Mary, Quite ContraryMary, Mary, Quite ContraryFor a prime example, we need look no further than Mary, Mary, Quite Contrary. It seems to be about a lady named Mary and her lovely garden, but in actual fact, the words have secret meanings.The rhyme was written about English Queen Mary I, also known as Bloody Mary. According to What does History Say?, the “silver bells” and “cockleshells” mentioned in the rhyme are actually instruments of torture, and the “pretty maids” is a reference to the guillotine.Portrait of Queen Mary IThere were actually a few nursery rhymes based around the gruesome exploits of Bloody Mary, and Three Blind Mice is another example. According to rhymes.org, the “farmer’s wife” mentioned in this poem is Mary, and the mice she slaughters are actually noblemen who tried to fight back against her Catholic reforms.Ring Around the RosieThe cover of L. Leslie Brooke’s Ring O’Roses (1922) shows nursery rhyme characters performing the gameAnother nursery rhyme that seems cute and innocent but is actually rather morbid when we look closer is Ring Around the Rosie. Also known as Ring a Ring o’ Roses, urban legends say that this nursery rhyme is all about the Black Death, with the line “Ashes, Ashes” being about burning bodies and “We all fall down” quite literally referring to the incredible spread of the plague and the way it caused so many people to fall down dead.Jack and JillJack and JillThis classic nursery rhyme only has three lines, so you wouldn’t think there could be much of a dark meaning behind it, but the story goes that this nursery rhyme is based on a real-life couple.According to WhatCulture, they used to sneak up the hill for their adulterous liaisons, with the phrase “fetch a pail of water” being a euphemism for their affair. The part where Jack “broke his crown” actually refers to him falling and splitting his head open.Related Video: New Child’s Play Movie TrailerPop Goes the WeaselSpinner Charlene Parker with weasel (on left) and spinning wheel (on right) at Knott’s Berry Farm. Photo by DTParker1000 CC BY-SA 4.0Pop Goes the Weasel is a particularly interesting one, with a few different theories floating around to try and explain it. One of the most widely-accepted theories involves Cockney rhyming slang, in which the “weasel” would refer to a coat (weasel and stoat) and “pop” means to pawn. The story seems to go that men would spend their money on drink and have to pawn their best coat in order to raise more.Rock-A-Bye BabyRock-a-bye BabyFinally, we’ll end with Rock-A-Bye Baby. If you actually look at the lyrics to this one, it’s already rather creepy on its own. Traditionally sung as a lullaby, Rock-A-Bye Baby talks about a baby teetering at the top of a tree and eventually falling to the ground.Read another story from us: Mary Really did Have a Little Lamb – The True Story of the Nursery RhymeIt’s quite horrific, and according to NurseryRhymes.com, the original story may have been based on King James II of England and Mary of Modena who allegedly passed off a baby as their own to ensure they had a Catholic heir.last_img read more

How to Pick a Customer Relationship Management Tool That Fits Your Business

first_img 2 min read This story appears in the January 2016 issue of Entrepreneur. Subscribe » Growing a business sometimes requires thinking outside the box. It’s fairly straightforward to determine if you need a customer relationship management solution such as Salesforce. Maria Thomas, director of product management at Insightly, a San Francisco-based CRM software provider, says that if you communicate daily with at least 10 to 20 customers, prospects or partners, your business could benefit from a proper CRM tool. We asked her to guide us through the selection process.What’s the first step?Start by documenting your technical requirements — what you need the tool to accomplish and the data you want it to track. If you don’t, you’ll likely overpay for a solution with unnecessary functionality or, worse, you might waste time and money on a CRM tool that can’t support a crucial part of your business.What should I consider from a technology perspective?Look for the tool’s APIs. How easily can they be used to build a customized interface that works seamlessly with your CRM data? You also want programs that integrate with Google and Microsoft. If your employees are mobile and rely on their smartphones, make sure the CRM has native mobile apps for both Android and iPhones. If employees spend a lot of their day on email, look for vendors that marry email inboxes with CRM so your staff can view all the info they need on one screen.Then there’s security. CRM databases hold a ton of personal and proprietary information. You want one that supports role-based authorizations.Should I look at a cloud solution or one I have to download and install locally?That decision rests on your needs, budget, time and resources. On-premises CRM gives you more control and full security of your data, offline access and the power to endlessly customize your system. But going that route requires purchasing servers, hiring IT personnel to maintain the system and an upfront investment of time and money.Cloud-based software-as-a-service CRM requires only a web browser to get started and an annual subscription fee per user. And therein lies the rub. That $50 or so a month isn’t bad when it’s you and a co-founder. But if you’re expecting rapid growth among your sales staff, consider buying from a company with tiered pricing for large clients.  Free Webinar | Sept. 9: The Entrepreneur’s Playbook for Going Global Register Now » December 29, 2015last_img read more

Google Tests Autoplay Videos in Search Results

first_img This story originally appeared on PCMag As a heavy user of the internet, I have yet to find anyone who enjoys videos that automatically start playing as soon as a web page loads. It’s a terrible idea made worse when the sound isn’t muted by default.So it’s with dismay that I report Google is experimenting with autoplay videos appearing in search results. Google confirmed such a test was being carried out to Search Engine Land after it was spotted by TheSEMPost.Below is an screenshot of the search results layout when autoplay video is included, courtesy of TheSEMPost:The video appears on the right of the search results page and is, of course, related to what you are searching for. So this will be especially appealing to publishers who are promoting a new movie, TV show or video game and want their trailer seen as much as possible. Thankfully, the videos are muted and only play through once. If you want to hear the video or have the urge to watch it again, it requires a click or tap.For now, Google is only rolling this test out to a very small number of users. When by Search Engine Land if it would become a permanent feature, a Google spokesperson gave a standard response: “We are constantly experimenting with ways to improve the search experience for our users, but have no plans to announce [the feature] at this time.”That’s not the only search change that’s in the cards. In a separate story, Search Engine Land also reported that Google will do away with Instant Search. The feature, which dates back to 2010, loads search results as you type. But in the last seven years, Google users are increasingly going mobile. “Many more of our searches happen on mobile, with very different input and interaction and screen constraints,” Google told Search Engine Land. Search suggestions — the sometimes humorous drop-downs that appear when you type — will remain, but Google won’t load full results until you hit Search. 2 min read July 27, 2017 Free Workshop | August 28: Get Better Engagement and Build Trust With Customers Now Enroll Now for Free This hands-on workshop will give you the tools to authentically connect with an increasingly skeptical online audience.last_img read more

North America generated the highest revenue in the protein therapeutics market

first_imgTherapeutic proteins are an important class of drugs, which serve patients in need of novel therapies. Approved recombinant protein therapeutics are developed to treat a wide array of clinical indications, including cancers, genetic disorders, infectious diseases, and metabolic disorders.The major factors that drive the growth of the global protein therapeutics market include introduction & application of new plasma-derived therapies, surge in prevalence of chronic & life-threatening diseases, and rise in awareness among populace regarding the high efficiency of protein therapeutics. However, high cost of protein therapies and complex reimbursement scenario impede the market growth. Conversely, increase in novel indications for known protein therapeutics and untapped emerging markets are anticipated to provide lucrative opportunities for the manufacturers in this industry.The metabolic disorders application generated the highest revenue of $27,837 million in 2016, and is anticipated to continue this trend in the future. This is attributed to the requirement for quality drugs and versatile therapies for disease treatment, especially diabetes. Cancer application is anticipated to grow at the highest CAGR of 8.2% from 2017 to 2023.Do Enquiry before purchasing Report @ https://www.alliedmarketresearch.com/purchase-enquiry/60?utm_source=Hitechnews&utm_medium=NiranjanNorth America held the highest market share of $72,899 million in 2016, owProtein Therapeutics Marketing to high prevalence rate of cancer and other chronic diseases, owing to rise in adoption of these drugs and increase in awareness about protein therapeutics. Asia-Pacific is expected to grow at the highest CAGR of 7.6% during the forecast period, owing to rapid industrialization in the area, increase in disposable income, and upsurge in government initiatives to modernize healthcare infrastructure.KEY FINDINGS OF THE STUDY The monoclonal antibody segment is anticipated to grow at the highest CAGR from 2017 to 2023.The cancer application segment is expected to witness the highest growth rate during the forecast period.Metabolic disease application segment is anticipated to occupy the largest share in the protein therapeutics market.North America dominated the global protein therapeutics market, and is projected to grow at a CAGR of 6.1%.The report provides extensive competitive analysis and profiles of key market players, such as Abbott Laboratories, Amgen Inc., Baxter International Inc., Eli Lilly and Company, F. Hoffmann-La Roche Ltd., Johnson & Johnson, Merck & Co., Inc., Novo Nordisk A/S, Pfizer Inc., and Sanofi. Other players (profiles not included in the report) in the value chain analysis include, Biogen, Inc., CSL Behring, and Genentech, Inc. Protein Therapeutics Market was valued at $140,109 million in 2016, and is projected to reach $217,591 million by 2023, growing at a CAGR of 6.5% from 2017 to 2023. The monoclonal antibodies product segment occupied the highest market share of the market in 2016.Download the Sample Report @ https://www.alliedmarketresearch.com/request-sample/60?utm_source=Hitechnews&utm_medium=Niranjanlast_img read more