New Technologies That May Save Lives

first_img Citation: New Technologies That May Save Lives (2007, October 19) retrieved 18 August 2019 from https://phys.org/news/2007-10-technologies.html Explore further The combined efforts of NEC and Tatung to implement WiMax will go on show next week at the WiMax Forum. This is part of the M-Taiwan project focused on providing mobile emergency services including transmission of x-ray, patient medical history, vitals while patients are en route to the hospital. WiMax is particularly suited for ambulances, according to NEC press releases.The efforts and contributions of NEC allowed WiMax to achieve 6 Mbps transmission per user. This is vital in exchanging large data sources such as patient records and x-rays. WiMax is a high speed broadband service that is particularly designed for use in vehicles traveling at excessive speeds. The WiMax will transmit vital information about the patient while en route to the hospital. This vital information allows emergency physicians to relay life saving instructions to the paramedic at the accident scene and in those vital minutes following a traumatic event. A NEC WiMax Research and Design Center will open by the end of 2007 in collaboration with the Taiwanese government. The Center will focus on creating an environment for vendors to utilize the end-to- end wireless platform and base station in the creation of new and life saving applications and technologies. The experimental trials of NEC and WiMax took place recently in the city of Hualien. It was a trial commissioned by the Taiwanese government to implement the M-Taiwan project. The city of Hualien plans to use the system for tourism and medical services. The preliminary test results indicate the system did very well in transmitting smoothly through base stations and in providing stability within the vehicle while traveling at high speeds. The new research and design center will enable other technologies to build on the work of NEC WiMax. NEC in a separate press release announced two new 21.3 inch amorphous silicon color thin film transistors , liquid crystal display modules ideal for medical applications. These two highly sophisticated displays are ideal for medical imaging diagnosis of patient illness or trauma. The product samples will be available in late November, 2007. 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. NEC to Deliver First Mobile WiMAX Solutions to Worldwide Market New NEC LCD Medical Technology As part of the M-Taiwan project, NEC and Tatung will demonstrate life saving technologies at the WiMax Forum next week. The forum will display the efforts of NEC in providing ambulance to hospital large file transmissions without interruption. A NEC Research and Development Center will open by years end for future enhancements of the technologies. last_img read more

Proposed Quantum Computer Consists of Billions of Electron Spins

first_img Researchers develop optical technique for controlling electron spins in quantum dot ensembles Explore further The physical setup of the quantum computer consists of a superconducting transmission line cavity coupled to an ensemble of electron spins and a transmon Cooper pair box. The cavity dimensions allow 100 billion electron spins to be coupled to the cavity mode, which could be used to make hundreds of physical qubits. Image copyright: J.H. Wesenberg, et al. With this issue in mind, scientists have recently proposed a quantum computing scheme that uses an ensemble of about 100 billion electron spins. They show that hundreds of physical qubits can be made from these collective electron spin excitations. The researchers, Janus Wesenberg from the University of Oxford, and coauthors from Oxford, Yale University and the University of Aarhus in Denmark, have published the proposed system in a recent issue of Physical Review Letters.The system can also perform qubit encoding and provide one- and two-bit gates for quantum computing. In the setup, the electron spins are coupled to a superconducting transmission line cavity. In turn, this cavity is coupled to a transmon Cooper pair box that carries out the gate operations.“A single electron spin only interacts very weakly with its environment: this makes it a good quantum memory, except that it is very hard to initialize or read out,” Wesenberg explained to PhysOrg.com. “In the ensemble register we make use of the fact that the collective interaction between an ensemble of billions of spins and a microwave cavity is greatly enhanced by the so-called superradiant effect. This makes it possible to transfer a microwave photon (carrying a qubit), from the cavity to the spin ensemble in a few tens of nanoseconds compared to a significant fraction of a second for a single spin. Once the photon has been transferred to the ensemble, it lives as an delocalized excitation. “The state of the system is a quantum superposition of each spin being excited, that is, flipped relative to the very strong magnetic field that has been applied to the system. There is an infinite number of ways in which a single excitation can be superpositioned in this way, and these can be described in terms of spin waves. By applying a magnetic gradient pulse, we can transfer an excitation that lives as one kind of spin wave to another kind of spin wave.”As Wesenberg added, the study brings up two independent new ideas. “Firstly, there is the idea to couple an ensemble of electron spins to a stripline resonator,” he said. “While this is a novel idea, it is a straightforward extension of previous work (by Peter Zoller and many others), on coupling ensembles of polar molecules, Rydberg atoms etc. to such stripline cavities. The main advantage of using electron spins is that they can simply be smeared onto the stripline substrate without any need for complex trapping arrangements. Secondly, there is the idea of using the holographic principle to address a large number of modes in the ensemble by means of a controllable magnetic gradient. This is a relatively straightforward extension of work by one of the authors (K. Mølmer), on holographic storage.”As the scientists explain in their study, one of the advantages of this setup is that a large number of spins can be controlled without requiring single spin measurement. Depending on the materials used, the system could achieve spin coherence times of up to tens of milliseconds, which could be used to build a solid-state device.“The immediate plan is to demonstrate experimentally that this works,” Wesenberg said. “First in the semi-classical setting (which is essentially electron spin resonance spectroscopy), and later in the quantum regime. Experiments to this end are underway at Yale and Oxford.”More information: J.H. Wesenberg, et al. “Quantum Computing with an Electron Spin Ensemble.” Physical Review Letters 103, 070502 (2009). DOI: 10.1103/PhysRevLett.103.070502Copyright 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. (PhysOrg.com) — While researchers have already demonstrated the building blocks for few-bit quantum computers, scaling these systems up to large quantum computers remains a challenge. One of the biggest problems is developing physical systems that can reliably store thousands of qubits, and enabling bits and pairs to be addressed individually for gate operations. Citation: Proposed Quantum Computer Consists of Billions of Electron Spins (2009, September 9) retrieved 18 August 2019 from https://phys.org/news/2009-09-quantum-billions-electron.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.last_img read more

New DNA research suggests second migration influx of early farmers to Europe

first_img More information: Ancient DNA reveals male diffusion through the Neolithic Mediterranean route, PNAS, Published online before print May 31, 2011, doi: 10.1073/pnas.1100723108AbstractThe Neolithic is a key period in the history of the European settlement. Although archaeological and present-day genetic data suggest several hypotheses regarding the human migration patterns at this period, validation of these hypotheses with the use of ancient genetic data has been limited. In this context, we studied DNA extracted from 53 individuals buried in a necropolis used by a French local community 5,000 y ago. The relatively good DNA preservation of the samples allowed us to obtain autosomal, Y-chromosomal, and/or mtDNA data for 29 of the 53 samples studied. From these datasets, we established close parental relationships within the necropolis and determined maternal and paternal lineages as well as the absence of an allele associated with lactase persistence, probably carried by Neolithic cultures of central Europe. Our study provides an integrative view of the genetic past in southern France at the end of the Neolithic period. Furthermore, the Y-haplotype lineages characterized and the study of their current repartition in European populations confirm a greater influence of the Mediterranean than the Central European route in the peopling of southern Europe during the Neolithic transition. The cave, known as Treilles, held the skeletons of 149 people, both adult and children, and mostly male; all of whom were laid to rest there some 5000 years ago. Testing using mtDNA on 29 of the remains showed lineages associated with hunter gatherers of early central Europe, while Y-chromosome testing showed a lineage more closely aligned with the people that lived along the Mediterranean and farmed for a living. The results also revealed that most of the people buried in the cave were related to one another along patrilineal lines; i.e. father-son, brothers, etc. which suggested that they lived in a community of sorts which of course meant growing food to sustain themselves.The researchers conclude that these results show that farmers from along the Mediterranean moved into southern Europe, began planting crops and mated with the local women, thus introducing farming into south central Europe.In addition, the research also showed that the people buried in the cave lacked the allele (DNA coding that occupies a given position on a chromosome) necessary for humans to digest lactate as they grow into adults, as contrasted with other skeletal remains found in other parts of central Europe from roughly the same time period that did have the allele and thus were able to drink the milk produced from domesticated cows. People from the Mediterranean also generally lack the allele, which accounts for the domestication of goats and sheep instead, which can be fermented and thus contains less lactate.The new research suggests that there were at least two major routes of farmer migrants into central Europe, as recent research done in Germany shows DNA from early populations there were of mixed local hunter gatherers and farmers from other regions as well. Explore further Citation: New DNA research suggests second migration influx of early farmers to Europe (2011, June 2) retrieved 18 August 2019 from https://phys.org/news/2011-06-dna-migration-influx-early-farmers.html (PhysOrg.com) — In a paper published in the Proceedings of the National Academy of Sciences (PNAS) a French team led by molecular anthropologist Marie Lacan of Paul Sabatier University documents the results of their DNA testing of a group of skeletons found in a cave in the 1930’s in southern France. The group tested both female linage (mitochondrial) and male (Y-Chromosomal) and found evidence to support the theory that one way that farming made its way into southern Europe was via migration of male farmers from Mediterranean areas, who produced offspring with resident female hunter-gatherers.center_img © 2010 PhysOrg.com Europe’s first farmers replaced their Stone Age hunter-gatherer forerunners 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

Study suggests midmantle holds as much water as Earths oceans

first_img(Phys.org)—A team of researchers affiliated with several institutions in Japan and Germany has found evidence that suggests the middle of Earth’s mantle holds as much water as the planet’s oceans. In their paper published on the open access site Science Advances, the group describes their theory and their experiments to try to prove them correct. © 2017 Phys.org Scientists discover why rocks flow slowly in Earth’s middle mantle 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. Scientists are convinced that the uppermost part of the mantle and lower part closest to the core are relatively water free. This is because the materials they are made of can’t to store water very well. The layer in between (at 410 to 660 kilometers below the surface), however, has been a topic of debate, with some believing it is also nearly water free and others suggesting it could harbor massive amounts of water. This is because the mid-mantle is dominated by the minerals wadsleyite and ringwoodite, which are known to be able to hold a lot of water. In this new effort, the researchers sought to settle the debate by using logic and lab experiments.The team notes that prior research has shown that the viscosity of the middle zone of the mantle is lower than that of both the upper mantle and lower mantle. To figure out if the middle zone is holding water, the researchers used this information and conducted lab experiments meant to replicate such conditions. They created synthetic ringwoodite to represent the middle mantle and bridgmanite to represent material from the lower mantle. They then used a technique that involved measuring dislocation mobility to infer viscosity and then added water to the ringwoodite. They report that doing so reduced its viscosity and matched measurements taken of the real mantle—this suggests that the real-world middle mantle does, indeed, hold water. By adjusting the amount of water added to their synthetic mantle and calculating changes in viscosity, they were able to estimate how waterlogged the real-world minerals are. They then used that information to calculate how much water is in the entire mid-mantle. They report that it is very nearly equal to the amount of water in all of the world’s oceans.More testing will have to be done, of course, but if scientists can prove without doubt that the middle mantle is filled with water, it calls into question theories that suggest water arrived on Earth from comets.center_img Citation: Study suggests mid-mantle holds as much water as Earth’s oceans (2017, June 8) retrieved 18 August 2019 from https://phys.org/news/2017-06-mid-mantle-earth-oceans.html Journal information: Science Advances TEM images of ringwoodite and bridgmanite before and after annealing. (A) Inverted bright-field image of ringwoodite before annealing (ρi = 11.0/μm2). (B) Inverted bright-field image of ringwoodite after annealing for 12 hours at 2000 K (ρf = 0.87/μm2). (C) Dark-field image of bridgmanite before annealing (ρi = 8.43/μm2). (D) Dark-field image of bridgmanite after annealing for 24 hours at 1600 K (ρf = 4.32/μm2). Rw., ringwoodite; Brg., bridgmanite. Credit: Science Advances  07 Jun 2017: Vol. 3, no. 6, e1603024, DOI: 10.1126/sciadv.1603024 More information: A nearly water-saturated mantle transition zone inferred from mineral viscosity, Science Advances  07 Jun 2017: Vol. 3, no. 6, e1603024, DOI: 10.1126/sciadv.1603024 , http://advances.sciencemag.org/content/3/6/e1603024.fullAbstractAn open question for solid-earth scientists is the amount of water in Earth’s interior. The uppermost mantle and lower mantle contain little water because their dominant minerals, olivine and bridgmanite, have limited water storage capacity. In contrast, the mantle transition zone (MTZ) at a depth of 410 to 660 km is considered to be a potential water reservoir because its dominant minerals, wadsleyite and ringwoodite, can contain large amounts of water [up to 3 weight % (wt %)]. However, the actual amount of water in the MTZ is unknown. Given that water incorporated into mantle minerals can lower their viscosity, we evaluate the water content of the MTZ by measuring dislocation mobility, a property that is inversely proportional to viscosity, as a function of temperature and water content in ringwoodite and bridgmanite. We find that dislocation mobility in bridgmanite is faster by two orders of magnitude than in anhydrous ringwoodite but 1.5 orders of magnitude slower than in water-saturated ringwoodite. To fit the observed mantle viscosity profiles, ringwoodite in the MTZ should contain 1 to 2 wt % water. The MTZ should thus be nearly water-saturated globally.last_img read more

Musings memories and tea over poetry

first_imgPadma Shree Tom Alter has taken you on many a journeys; from the the classical Urdu and Persian poet Mirza Ghalib to the last of Mughals, Bahadur Shah Zafar,  he portrays the high and mighty characters from history with a flair onto  the stag. It all comes naturally to the veteran Bollywood actor and thespian, Tom Alter. Lo and behold! As this time around he takes us on a journey of romance through an inspirational poetry reading session Reflections Also Read – ‘Playing Jojo was emotionally exhausting’ at Le Meridien on 11 July.Taking the poetical experience one notch up, the audience will get an opportunity to indulge in the  aromatic flavours of the finest teas from Himalayas. While you sit back and relax, sip in an afternoon tea picked up by the tea sommelier and founder director of Anandini Himalyan tea, Anamika Singh. With Tom Alter’s poetry over a cuppa of tea, this evening promises to be a soothing and delightful experience for the poetry lovers in the capital. Blissful we say!last_img read more

If consumer wants luxury condoms whats the issue HC to Centre

first_imgThe Delhi High Court on Friday questioned the Centre on its decision to put a ceiling on the prices of condoms saying what was the issue if consumers are willing to pay for premium or luxury male contraceptives.A bench of chief justice G Rohini and justice Rajiv Sahai Endlaw posed the query to the government while hearing a plea by pharma firms Reckitt Benckiser and JK Ansell Ltd (JKAL) who have challenged the government’s decision to put a ceiling on the prices of condoms. Also Read – Need to understand why law graduate’s natural choice is not legal profession: CJIAdditional solicitor general Sanjay Jain, appearing for the Centre, responded that condoms are currently in the national list of essential medicines and there can be no gradation, of luxury and ordinary, where drugs are concerned. The pharma firms have in their pleas contended that their products are ‘devices’ not ‘medicines’ and thus would not fall under the Drug Price Control Order (DPCO). Therefore, no cap can be put on the prices, they said.last_img read more

HC lawyers ceasework extended again

first_imgKolkata: The ceasework by lawyers’ associations that has crippled the Calcutta High Court for over a record two months, will continue till May 11 over demands for appointment of judges, the Bar Association said today. The Bar Association, which commands the affiliation of the majority of lawyers practising at the high court, has decided in a general body meeting that the ceasework will continue till May 11 and the decision will be reviewed on May 14, its general secretary Amol Mukherjee said. Also Read – Heavy rain hits traffic, flights”The ceasework will, however, automatically stand withdrawn if appointment of new judges is notified in the meantime,” Mukherjee said.The Bar Library Club, which is also participating in the ceasework, will meet on Monday to decide on its course of action with regard to continuation of the agitation.”Our members will hold a meeting on Monday to take an independent decision with regard to extension of the ceasework,” Bar Library Club president Jayanta Mitra said. Also Read – Speeding Jaguar crashes into Merc, 2 B’deshi bystanders killedThe previous longest strike was of 2 months in 2002 in protest against hike in stamp duty by the West Bengal government. It was observed across all courts in the state including Calcutta High Court.Though a miniscule percentage of petitioners have moved the high court in-person during the ceasework, which began on February 19, most of the cases pending before the court could not be heard as lawyers have not participated in proceedings.The associations have also demanded the appointment of a chief justice to the high court, which has been headed by acting chief justices for over three years with the exception of only three months. The high court at present has 33 judges, while the sanctioned strength is that of 72 judges.Thousands of litigants, whose petitions are pending before the high court, are at their wits’ end as to when their cases would be disposed of given the uncertainty over when the ceasework would be lifted.Till the end of March, 2,23,921 cases are pending before the high court, according to official data.Very few new petitions have been filed since February 19 owing to the ceasework by lawyers, thus landing those who have urgent matters to be moved before the court in a soup.last_img read more

Be a fashion diva this winter

first_imgLook your best in winter as well, layer thin clothes and avoid the awkward bulkiness of heavy layers, says an expert. Layer several thin clothes and you can seal in heat more effectively and avoid the awkward bulkiness of heavy layers that comes with wearing oversized sweaters or sweatshirts. Begin with a thermal T-shirt or tank top as a base layer, add a thin sweater which will function primarily as the barrier between your skin and the cold air. After adding proper layers of clothing, make the final addition of a stylish coat or jacket. A coat or jacket will serve as insulation from the cold fall or winter air. To choose a functional but cute coat, steer away from bulk puffer coats or skiing jackets.  Instead, seek out tailored coats that provide the same protection in addition to a more flattering style. Since a considerable amount of body heat escapes through the head, always try to incorporate a hat or head warmer, beanie to a fleece bucket hat to a slouchy beret that covers your head. Whether you ultimately decide on trendy ankle-height shoes or a more protective option, consider not only the stylistic appeal, but also the functionality. Save yourself indecisive shoe trouble by committing to wearing only a few different pairs of boots in colder weather.last_img read more

Rath Yatra BJP moves HC against refusal of permission

first_imgKolkata: The BJP on Friday moved an appeal before a division bench of the Calcutta High Court against refusal of permission for its Rath Yatra. Granting leave to the BJP to file the appeal, a division bench comprising Justices B Somadder and A Mukherjee said it will hear the matter at 12.30 pm. The bench directed BJP’s lawyers to serve copy of the appeal to the West Bengal government and other respondents before the matter is taken up for hearing. Also Read – Rain batters Kolkata, cripples normal life A single bench of the high court on Thursday said it cannot grant permission at this stage for the BJP rally in Coochbehar, scheduled to be flagged off by party president Amit Shah on Friday, after the West Bengal government refused to allow the event on the grounds that it might cause communal tension. The court directed that superintendents of police of all districts in West Bengal will file a report by December 21 to it on the holding of ‘rath yatra’ rallies by the Bharatiya Janata Party (BJP), after hearing all district presidents of the party. Directing that the rally stands deferred till the next date of hearing on January 9, Justice Tapabrata Chakraborty observed that the prayer of BJP for permission to hold the Rath Yatra cannot be granted at this stage.last_img read more

Sunderban residents can now collect passports from Canning post office

first_imgKolkata: In a major move, the residents of the Sunderbans can now get their passports from the Canning post office itself.The passport office at Canning post office has become operational from Wednesday. Earlier, the residents of the Sunderbans had to come to Kolkata to get their passports from the Regional Passport Office. There are people who live in Geonkhali and Sajnekhali, two very remote areas of the Sunderbans, and coming to Kolkata to get their passports posed a serious problem for them. Also Read – Bose & Gandhi: More similar than apart, says Sugata BoseThe residents of these two areas had written to the state government to take up the matter with the Regional Passport authority. The setting of the passport office in canning met a long-standing demand of the people. Bibhuti Bhusan Kumar, Regional Passport officer said passports are being distributed among the applicants from 40 post offices in Bengal. The work will be carried out from the Regional Passport office. The applicants will have to submit all the papers online. He said that after police verification, the applicants will get the passports in two to three days. Getting the police verification done for the applicants staying in remote areas is a major problem. It takes even several months for them to get the police verification done. The reason for this is the shortage of staff in the police stations. Kumar said attempts will be made to set up an office where all the official work will be done.last_img read more