Mandos chainless ebike is headed for Europe in 2013 w Video

center_img More information: www.mandofootloose.com/ Explore further The Footloose takes cues from auto technology with its Electronic Control Unit (ECU), which works with integrated sensors. The sensors recognize speed and slope. The rider can take advantage of an automatic gear changer to monitor terrain and adjust the motor’s output as needed. A detachable Human Machine Interface (HMI) display can go up on the handle bar to display information such as distance traveled, speed and amount of electricity produced. Another key point being promoted is that it folds up neatly. The bike is a collaborative effort of Mando and Meister. They also called on British designer Mark Sanders and Dutch e-bike expert Han Goes. Sanders describes the look as “clean like the latest smart phones, with powerful technology hidden inside.” The resulting design was officially introduced at a show earlier this year and there are plans to have the bike on the European market by 2013. 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

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Russian researchers find more evidence to support notion that lightning is caused

first_img Citation: Russian researchers find more evidence to support notion that lightning is caused by cosmic rays (2013, May 6) retrieved 18 August 2019 from https://phys.org/news/2013-05-russian-evidence-notion-lightning-cosmic.html (Phys.org) —Russian physicists Alex Gurevich and Anatoly Karashtin claim, in a paper published in the journal Physical Review Letters, they have found more evidence to support their idea that lightning is caused by cosmic rays. The notion was first proposed by Gurevich back in 1992, and has been a source of debate ever since. © 2013 Phys.org Explore further More information: Runaway Breakdown and Hydrometeors in Lightning Initiation, Phys. Rev. Lett. 110, 185005 (2013). prl.aps.org/abstract/PRL/v110/i18/e185005AbstractThe particular electric pulse discharges are observed in thunderclouds during the initiation stage of negative cloud-to-ground lightning. The discharges are quite different from conventional streamers or leaders. A detailed analysis reveals that the shape of the pulses is determined by the runaway breakdown of air in the thundercloud electric field initiated by extensive atmospheric showers (RB-EAS). The high amplitude of the pulse electric current is due to the multiple microdischarges at hydrometeors stimulated and synchronized by the low-energy electrons generated in the RB-EAS process. The series of specific pulse discharges leads to charge reset from hydrometeors to the free ions and creates numerous stretched ion clusters, both positive and negative. As a result, a wide region in the thundercloud with a sufficiently high fractal ion conductivity is formed. The charge transport by ions plays a decisive role in the lightning leader preconditioning.via Physics Synopsis Journal information: Physical Review Letterscenter_img Image: Wikimedia Commons Scientists detect dark lightning linked to visible lightning No one really knows what causes lightning to form and strike—the prevailing view is that it comes about as a result of collisions between ice crystals in clouds and hail stones. But because clouds and the lightning they produce are unpredictable and hard to pin down, no one has been able to prove this theory. Another theory, proposed by Gurevich twenty years ago, says that lightning is formed from the collisions between cosmic rays and water droplets present in thunderclouds. Now he and a colleague claim to have found evidence to support this idea.Gurevich suggests that cosmic rays entering thunder clouds cause the air in them to be ionized, resulting in a lot of free electrons floating around. The electronic field already present in the cloud, he continues, leads to the free electrons being boosted to higher energies. When the electrons present in the air collide with water atoms, more electrons are released, setting off what he describes as an avalanche of high-energy particles that eventually give way to a “runaway breakdown”—a discharge that is witnessed as a lightning strike.As with other theories regarding the origins of lightning, Gurevich’s ideas haven’t been proved. But he hasn’t been sitting still. In this new effort, he along with Karashtin have been measuring and analyzing radio waves in storm clouds as lightning occurs. The idea is that if such strikes are due to interactions with cosmic rays, there should be measurable amounts of radio waves given off.Gurevich and Karashtin set up equipment to monitor storm clouds over Russia and Kazakhstan—recording radio waves emitted during 3,800 lightning strikes. In analyzing the data, they found that hundreds, and perhaps even thousands of short radio wave pulses occurred just as a bolt of lightning was about to form. Perhaps more importantly, they matched the models Gurevich had built years before. There was on hitch however, the amount of energy delivered by the cosmic rays in the model don’t happen often enough in the real world to cause lightning strikes in most every thunderstorm.Gurevich and Karashtin say the discrepancy can be explained by the addition of energy into the system by free electrons passing near hydrometeors (bits of hail or water droplets). When that happens, very small discharges result, adding to the total charge. Taken together they say, enough energy is added to cause the cascade that leads to lightning formation. 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

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Researchers suggest Victorianera people more intelligent than modernday counterparts

first_img Citation: Researchers suggest Victorian-era people more intelligent than modern-day counterparts (2013, May 17) retrieved 18 August 2019 from https://phys.org/news/2013-05-victorian-era-people-intelligent-modern-day-counterparts.html Queen Victoria, after whom the era is named. Credit: Wikipedia The Victorian era has been highly touted by historians as one of the most productive in human history—inventions, observations and highly acclaimed art and music from that time still resonate today. The era was defined by Queen Victoria’s reign in England which ran from 1837 until her death in 1901. Comparing the average IQ of people from that time with that of modern-day people is, of course, impossible—at least using traditional methods. The researchers suggest that reaction times to stimuli can be used as an alternative way to compare relative IQ levels.IQ tests themselves have come under scrutiny of late because they quite often reflect bias, such as education levels, societal norms, and other not-easily defined factors. Other research has shown that overall health, nutrition levels and degree of fatigue can impact IQ scores as well. For this reason, the team has turned to RT as a means of evaluating what they call general intelligence, which they claim to be a measure of elementary cognition.The researchers didn’t come up with the idea of RT as a measure of intelligence themselves; rather, they are relying on claims made by other researchers over the years that they say prove that RT is a way of measuring the “true” intelligence of a person, i.e. an intelligence measure not impacted by education level, illness, background, etc. Using such claims as a basis, the team looked at RT tests given by various researchers during the period 1884 to 2004, and found that RT rates slowly increased over the entire time period. For men, the increase was found to be 183ms to 253ms; for women the increase was from 188ms to 261ms. The researchers claim this proves that people have grown “less clever” over time. They back up their claim by suggesting they know the reason for the decline in intelligence—smarter people having fewer children, while the less smart, have more.The claims by the European team will undoubtedly be viewed as controversial—after all, no one has proved that reaction times truly are an accurate measure of intelligence. Nor does the data suggest that those researchers testing people for their reaction times chose their subjects at random, or even in fact, performed the tests in the same way as everyone else. There’s also the consideration of the Flynn effect, where other researchers have found average intelligence levels rising since the WW II.The study has been published in the journal Intelligence. More information: www.sciencedirect.com/science/ … ii/S0160289613000470 Explore further Noted authority says women now have higher IQ than men © 2013 Phys.org 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. (Phys.org) —In a new study, a European research team suggests that the average intelligence level of Victorian-era people was higher than that of modern-day people. They base their controversial assertion on reaction times (RT) to visual stimuli given as tests to people from the late 1800s to modern times—the faster the reaction time, they say, the smarter the person.last_img read more

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Ocean travel and colour

Known for minimal use of colour, Wendell Rodricks surprised with his Ocean Travels collection this fashion week. Besides the regular easy lines and cuts that fell like smooth water, the designer played with colours, but very subtly. Ranging from blues to pale yellows and an occasional salmon pink, Rodricks, this season, was all about linen, satin and shimmer. While shimmer broke the predictability, the colour added the right twist to the collection. The collection breathed the ease of the ocean – as the name suggests – and fell in a smooth unfettered flow. read more

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3 employees booked for dacoity in East Midnapore

first_imgKolkata: The East Midnapore police have cracked a case in just six hours and arrested three employees of a company for stealing money that was collected after delivering products through “cash on delivery”.Police said they received a complaint on July 30 that a dacoity took place at their office in Panskura and Rs 46 lakh was looted. The company delivers goods that are booked through different online shopping sites.Police have initiated a probe and interrogated the employees of the company. During the interrogation, they had initially told the police that four people had come on two motorbikes and looted the money at gun point. They couldn’t identify them as their faces were covered with clothes. Also Read – Rain batters Kolkata, cripples normal lifePolice had interrogated one Biswajit Murmu, an employee and found discrepancies in his statement.They continued questioning him. As it continued, he broke down before the police and confessed that he and two more of his colleagues were behind the crime. The two others are Ujjal Dutta and Sandip Sarkar. A senior police officer said they had chalked out a plan and stole the money that was collected during delivery of goods through “cash on delivery”. Usually, the money collected needs to be Also Read – Speeding Jaguar crashes into Mercedes car in Kolkata, 2 pedestrians killeddeposited in a bank.But the three youths stole the same instead of depositing it and reported that there was a dacoity. It was learnt that Rs 46 lakh was collected and the money could not be deposited as there were weekends in between. The entire amount has been recovered.V Solomon Nesakumar, Superintendent of Police of East Midnapore district, said: “The case was cracked within 6 hours and the all three of them were arrested.”last_img read more

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Trinamool forms Gram Panchayat board in Malbazar after 40year wait

first_imgKolkata: Trinamool Congress has added another feather to its cap at the Panchayat level, by forming its board in Matiali Batabari I Gram Panchayat near Chalsa at Malbazar sub-division in Jalpaiguri.It may be mentioned that the people of the area have witnessed a change after 40 years in the political party that formed the board of the Gram Panchayat.The board was formed on Wednesday. Dipak Bhujel of Chalsa has become the Panchayat Pradhan while Ajay Orao of Batabari Tea Estate has become the Upa-pradhan. Also Read – Rain batters Kolkata, cripples normal lifeBhujel is also the Matiali block president of the youth wing of Trinamool Congress.Trinamool Congress workers held a victory rally in the area after forming the board. Local people also joined the victory rally, where sweets were distributed.Local leaders of the political party are considering this as a huge win, as despite several attempts it had not become possible to bring a change of guard in the area in the past 40 years.Local people are now expecting huge development work to take place in the area, with Trinamool Congress forming the board in the Gram Panchayat. Also Read – Speeding Jaguar crashes into Mercedes car in Kolkata, 2 pedestrians killedTrinamool Congress has bagged 16 out of 20 seats and BJP has bagged one seat, while Jharkhand Mukti Morcha has got one seat. Two seats have been won by Independent candidates.All the 20 members were present when the board was formed on Wednesday. The administration had made all necessary arrangements to ensure that no law and order trouble takes place during formation of the board. However, the entire process was completed in a peaceful atmosphere.According to local people, the change in the Gram Panchay has finally come after 40 long years as Chief Minister Mamata Banerjee has ensured overall development in the state and they expect that further development will take place in the years to come.last_img read more

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Wholesale cooperative society to give 7 Samabayika stores a makeover

first_imgKolkata: The Calcutta Wholesale Consumers Cooperative Society (CWCCS) is planning to revive the seven Samabayika stores under its aegis in the city and make it at par with other departmental stores of leading private companies.The CWCCS has already given a facelift to two of its stores — one at Hazra and another at Rashbehari in South Kolkata, but the other five are in urgent need of a revival. “Our largest store located on Lindsay Street near New Market that is spread across an area of 9,360 square feet presents a sorry picture with a handful of customers visiting the place. We have submitted a detailed proposal to the state Cooperation minister Arup Roy which will entail an investment of Rs 2 crore for a complete facelift of this store. As soon as we get the funds work will start. It will take around six months to complete the work,” said Alok Das, chairman of CWCCS. Also Read – Rain batters Kolkata, cripples normal lifeDas said only selling rice, pulses, spices and similar articles will not boost sales, we also need to have everything under one roof such as the likes of popular private departmental stores. It may be mentioned that all the Samabayika stores under CWCCS are located at prime locations. Apart from Rashbehari, Hazra and New Market, four other stores are at Chandni Chowk, Ekdalia near Ballygunge railway station, Uttarayan Market at Ultadanga and Hatibagan near Also Read – Speeding Jaguar crashes into Mercedes car in Kolkata, 2 pedestrians killedStar Theatre. CWCCS is a central society that was formed in 1963 with more than 90 percent share from the state government and the Centre. There are a number of sub-societies that individually run Samabayikas in the city. There was a time in the 70s when there were 229 stores in the city but currently it has come down to around 45. One such Sambayika store at Moni Sanyal Road in Chetla that has received a facelift was inaugurated by Kolkata Mayor Firhad Hakim on Friday. “If there is a proposal for reviving Samabayikas, I will surely try to provide assistance,” Hakim said. Most of the Samabayikas in the city had come up in the 1970s, but due to utter neglect during the Left Front regime, most of these departmental stores are in a bad shape,” Das added.last_img read more

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Common chemicals in shampoos alcohol may up cancer risk

first_imgCommon chemicals found in everyday items such as furniture, cosmetics, shampoos and alcohol can increase the risk of cancer, a new study led by an Indian-origin scientist warns.Aldehydes are a class of chemicals made in our own bodies in small quantities but increasingly found everywhere in our environment. Exposure to these chemicals has previously been linked with cancer, but the reasons for the link remain unclear.Researchers, led by Professor Ashok Venkitaraman from the University of Cambridge in the UK, used genetically-engineered human cells and cells from patients bearing a faulty copy of the breast cancer gene BRCA2 to identify the mechanism by which exposure to aldehydes could promote cancer. Also Read – Add new books to your shelfDamage to our DNA, which arises frequently as cells in our bodies divide, can lead to the development of cancers, but our body has its own defence mechanism that helps repair this damage.However, researchers found that aldehyde exposure breaks down this defence mechanisms even in normal healthy cells, but people who have inherited a faulty copy of BRCA2 are particularly sensitive to such damage.Everyone is born with two copies of most genes. People who inherit a single faulty copy of the BRCA2 gene are susceptible to cancer. Also Read – Over 2 hours screen time daily will make your kids impulsiveThe reason behind this is not fully understood, because their cells should be able to repair DNA using the lower – but still adequate levels of BRCA2 protein made from the remaining, intact copy of the gene.The new study, published in the journal Cell, shows that aldehydes trigger the degradation of BRCA2 protein in cells.In people who inherit one faulty copy of the BRCA2 gene, this effect pushes down BRCA2 protein levels below the amount required for adequate DNA repair, breaking down the normal mechanisms that prevent mutations, which could promote cancer formation. “Our study shows how chemicals to which we are increasingly exposed in our day-to-day lives may increase the risk of diseases like cancer,” said Venkitaraman.”It also helps to explain why the faulty genes could make some people particularly sensitive to the cancer-causing effects of these chemicals,” he added.”An important implication of our work is that it may be aldehyde exposure that triggers cancer susceptibility in people who inherit one faulty copy of the BRCA2 gene. This may help us in future to prevent or treat cancer in such people,” he said.One common potential source of aldehydes is alcohol: our body converts the alcohol that we drink into acetaldehyde, one such chemical.Ordinarily, this is broken down by a natural enzyme known as acetaldehyde dehydrogenase, but over 500 million people mainly from countries such as Japan, China and Korea inherit a faulty gene, ALDH2, that inactivates this enzyme.This is why many Asian people develop flushes when they drink, but could mean they are also particularly sensitive to the cancer-promoting effect.This new research shows that aldehyde accumulation in such people could trigger cancer susceptibility by degrading BRCA2, compromising DNA repair, whether or not they inherit a faulty copy of BRCA2.An estimated 30-60 per cent of people from Japan, Korea and China carry the faulty ALDH2 and may therefore be at risk from cancer through this new mechanism.last_img read more

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