Month: August 2019

Lithiumion ultracapacitor could recharge power tools in minutes

first_img More information: Ioxusvia: Technology Review 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. © 2010 PhysOrg.com Improved polymers for lithium ion batteries pave the way for next generation of electric and hybrid cars Ioxus’ product line of hybrid lithium-ion ultracapacitors. Image credit: Ioxus. The new lithium-ion ultracapacitor was developed by Ioxus, a company based in Oneonta, New York. The company specializes in making ultracapacitors for hybrid-electric buses and engine start-stop systems in fuel-efficient cars. In general, hybrid lithium-ion ultracapacitors are similar to traditional lithium-ion batteries, except that they store charge at the surface of the electrodes instead of within the electrodes. Although the concept of hybrid lithium-ion ultracapacitors has been around for 20 years, demand for alternative energy-storage devices has inspired recent improvements.Typically, standard ultracapacitors can store only about 5% as much energy as lithium-ion batteries. Ioxus’ new hybrid system can store about twice as much as standard ultracapacitors, although this is still much less than standard lithium-ion batteries. However, the advantage of ultracapacitors is that they can capture and release energy in seconds, providing a much faster recharge time compared with lithium-ion batteries. In addition, traditional lithium-ion batteries can be recharged only a few hundred times, which is much less than the 20,000 cycles provided by the hybrid system. In other words, the hybrid lithium-ion ultracapacitors have more power than lithium-ion batteries, but less energy storage.In the future, the hybrid lithium-ion ultracapacitor could also be used for regenerative braking in vehicles, especially if it could be scaled up to provide greater energy storage. Since vehicle braking systems need to be recharged hundreds of thousands of times, the hybrid system’s cycle life will also need to be improved. Citation: Lithium-ion ultracapacitor could recharge power tools in minutes (2011, January 10) retrieved 18 August 2019 from https://phys.org/news/2011-01-lithium-ion-ultracapacitor-recharge-power-tools.html (PhysOrg.com) — Although many people keep a few power tools in the garage or basement for weekend projects, the tools usually don’t get used very often. Fully recharging the battery in a drill or saw can take several hours, even if the tool is only used for a few minutes. But with a hybrid energy-storage device that combines a lithium-ion battery with an ultracapacitor, power tools could be recharged in about one minute and have a lifetime of more than 20,000 charges. The downside is that the power tool could run for only about 1/15 as long as it would on a normal battery.last_img read more

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A breath of Beijing air gets metagenomics treatment

Explore further More information: Environmental Science & Technology paper: pubs.acs.org/doi/abs/10.1021/es4048472Nature News story: www.nature.com/news/beijing-sm … -of-microbes-1.14640 Journal information: Environmental Science & Technology They took 14 air samples over seven consecutive days. Using genome sequencing, they found about 1,300 different microbial species in the heavy smog period of early last year. The scientists compared their results with a large gene database. What about their findings? Most of the microbes they found were benign but a few were responsible for allergies and respiratory disease. As Nature News reported, the most abundant species identified was Geodermatophilus obscurus, That is a common soil bacterium. Streptococcus pneumonia, however, was also part of the brew, which can cause pneumonia, along with Aspergillus fumigatus, a fungal allergen, and other bacteria typically found in faeces. “Our results,” wrote the researchers, “suggested that the majority of the inhalable microorganisms were soil-associated and nonpathogenic to humans. Nevertheless, the sequences of several respiratory microbial allergens and pathogens were identified and their relative abundance appeared to have increased with increased concentrations of PM pollution.”The authors suggested that their findings may provide an important reference for environmental scientists, health workers and city planners. The researchers also suggested, according to Nature News, that clinical studies explore signs of the same microbes in the sputum of patients with respiratory tract infections, to assess whether smoggier days lead to more infections.Metagenomics, which can analyze microbial communities regardless of the ability of member organisms to be cultured in the laboratory, is recognized as a powerful approach. Nature Reviews also describes metagenomics as “based on the genomic analysis of microbial DNA that is extracted directly from communities in environmental samples.” Citation: A breath of Beijing air gets metagenomics treatment (2014, February 2) retrieved 18 August 2019 from https://phys.org/news/2014-02-beijing-air-metagenomics-treatment.html Delhi says air ‘not as bad’ as Beijing after smog scrutiny 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. © 2014 Phys.org (Phys.org) —A Friday report in Nature News handles a well-publicized topic, the air quality in Beijing. That may seem like rather old news, but the Friday report has new information on the city’s troubling air quality. Scientists were looking for information about the potential for pathogens and allergens in Beijing’s air and they turned to “metagenomics” as their study tool. The research team described what they were seeking in their paper, “Inhalable Microorganisms in Beijing’s PM2.5 and PM10 Pollutants during a Severe Smog Event,” for Environmental Science & Technology. “While the physical and chemical properties of PM pollutants have been extensively studied, much less is known about the inhalable microorganisms. Most existing data on airborne microbial communities using 16S or 18S rRNA gene sequencing to categorize bacteria or fungi into the family or genus levels do not provide information on their allergenic and pathogenic potentials. Here we employed metagenomic methods to analyze the microbial composition of Beijing’s PM pollutants during a severe January smog event.” A woman wearing a face mask walks on an overpass in Beijing on January 16, 2014 read more

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Going the Coldplay way

first_imgThe urban dictionary defines a Coldplayer as  what the fans of the British Alternative Rock Band Coldplay call themselves. As one of the world’s most popular artists, Coldplay have sold a total of over 55 million copies of their five studio albums over a period of 12 years.Coldplay achieved worldwide fame with the release of the single Yellow in 2000, followed by their debut album released in the same year, Parachutes. The band’s second album, A Rush of Blood to the Head (2002 Also Read – ‘Playing Jojo was emotionally exhausting’), was released to critical acclaim and won multiple awards. Their next release, X&Y, the best-selling album worldwide in 2005, was met with mostly positive reviews upon its release, though some critics felt that it was inferior to its predecessor. The band’s fourth studio album, Viva la Vida or Death and All His Friends (2008) released again to largely positive reviews, earning several Grammy nominations and wins at the 51st Grammy Awards. Coldplayer India attempts to bring the music and the vibe of a Coldplay show to venues across India by putting together experienced musicians from top acts in the Capital. Coldplayer India is – Sherry Matthews (vocals),  Aashish Mandhwani (guitar and vocals),  Ritwik De (guitars, vocals and keyboards), Suyash Gabriel (drums) and Sergio Dinarte (bass). Also Read – Leslie doing new comedy special with NetflixAashish plays guitar for one of Delhi’s established rock acts Fire Exit. With over 200 shows and an album with Fire Exit, he has played at most major festivals held in India over the last 6 years. Ritwik is the lead guitarist and singer of MindFlew. Suyash currently does sessions for Delhi-based bands including The Doppler Effectand TribU2. Having started off with Western Classical and Broadway at the age of 8, Sherry Mathews went on to perform at various platforms in and around India. He has been part of Artistes Unlimited since it’s initiation and has sung backup vocals for Delhi-based bands Advaita and Them Clones to name a few. He currently is the lead vocalist for Cobbled Street, a Jazz-Funk band and The Doppler Effect, a Progressive Rock band and TribU2, a U2 tribute band. Born in El Salvador,  Sergio Dinarte started to play classical guitar at the age of 12. He is currently in Delhi, playing with acts such as the Ghost Crabs, New Delhi roots, Negra Pradera.last_img read more

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Budget raises tax deduction limit to Rs444 lakh for IT payer

first_imgIn the Budget for 2015-16, Indian Finance Minister Arun Jaitley has proposed raising the tax deduction limit by Rs 10,000 for payment towards health insurance premium.At the same time, exemption of transport allowance has been doubled to Rs 19,200 per year.So, the deduction limit has been raised by Rs 19,200 per year as the Finance Minister has proposed raising tax deduction limit on few counts.”…the fifth pillar of my taxation proposals this year is extension of benefits to middle class tax payers,” he said in his Budget speech. Also Read – Need to understand why law graduate’s natural choice is not legal profession: CJITo provide social safety net and the facility of pension to individuals, an additional deduction of Rs 50,000 is proposed to be provided for contribution to the New Pension Scheme under Section 80CCD, he said.”This will enable India to become a pensioned society instead of a pensionless society,” he said.Transport allowance exemption is being increased from Rs 800 to Rs 1,600 per month, he added.Besides, the other deduction has been maintained namely — deduction under section 80C of Rs 1.5 lakh while deduction under section 80CCD Rs 50,000. Also Read – Health remains key challenge in India’s development: KovindAt the same time tax deduction on account of interest on house property loan self occupied property has been unchanged at Rs 2 lakh.”Having raised the basic exemption limit and 80C limit etc last year, there was hardly any scope for further concession. Raising the limit of health insurance premium, transport allowance exemption and additional deduction of 50,000 for NPS will help taxpayers to save little more in taxes,” PwC India Partner and Leader Personal Tax Kuldip Kumar said. Commenting on tax deduction limit, PNB MetLife MD Tarun Chugh said the proposal to increase the tax benefits for health insurance from Rs 15,000 to Rs 25,000 is a welcome step.”Currently, over 78-80 per cent of health care expenses are funded by the Indians out of their own pocket and this move will encourage people to increase their coverage keeping in the mind the rising cost of healthcare,” he said.With the reduction of corporate tax rate in a phased manner from 30 per cent to 25 per cent over the next 4 years, India Inc has a tax clarity for next five years at-least, Rakesh Nagia, Managing Partner Nagia & Company.Additionally, he said, with a view to tax the super-rich in an efficient manner, FM has duly taxed the super rich by abolishing wealth tax and levying 2 per cent surcharge.Govt raises farm credit target to Rs 8.5 lakh cr for 2015-16The government today raised the farm credit target by Rs 50,000 crore to Rs 8.5 lakh crore, allocated Rs 5,300 crore for flagship irrigation programme and announced plans to set up a common agricultural national market to boost farmers’ income that is “under stress”.The government has clubbed 10 major schemes, including National Food Security Mission, under the umbrella scheme “Krishionnati Yojana” to be implemented by states with central assistance of Rs 9,000 crore during the 2015-16 fiscal.Another Rs 5,300 crore has been allocated to the Pradhan Mantri Gram Sinchai Yojana (PMGSY) to boost irrigation as currently more than 60 per cent of farm land is rainfed.Presenting his maiden full-fledged Budget for 2015-16, Finance Minister Arun Jaitley said, “Farm credit underpins the efforts of our hard- working farmers. I have, therefore, set up an ambitious target of Rs 8.5 lakh crore of credit during the year 2015-16 which, I am sure, the banks will surpass.”Farmers have been availing crop loans up to Rs 3 lakh at 7 per cent interest rate. However, the effective rate of interest for farmers who repay on time is 4 per cent.Noting that farm incomes are under stress, Jaitely listed out raising farmers’ income as one of the major challenges ahead for the government.”While the farmer is no longer in the clutches of local trader, his produce still does not command the best national price. To increase the incomes of farmers, it is imperative that we create a National agricultural market, which will have incidental benefit of moderating price rises. I intend this year to work with States, in NITI, for the creation of a Unified National Agriculture Market,” he said.Emphasising that raising productivity and realisation of reasonable price for agri-produce is essential for the welfare of rural people, Jaitley said, “We should commit to increase irrigation area, improve efficiency of distinct irrigation scheme, promoting agro-based industries for value addition, increasing farm income and reasonable prices for farmers produce.”To support agriculture sector with the help of effective and hassle-free agricultural credit with special focus on small and marginal farmers, the Finance Minister allocated Rs 25,000 crore in 2015-16 to the corpus of Rural Infrastructure Development Fund set up under NABARD.last_img read more

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IMI mulls offshore campus at Chinas Sichuan province

first_imgKOLKATA: International Management Institute (IMI) Kolkata is planning to set up its offshore campus at Chengdu in Sichuan province of China.”We are in talks with the Sichuan Academy of Social Sciences for collaboration to commence an MBA course on our proposed offshore campus. Our focus will be on management and business research,” said Arindam Banik, director of IMI Kolkata.The Sichuan Academy of Social Sciences has been playing a major role as a think tank and idea treasury in the social and economic development of Sichuan Province. Also Read – Heavy rain hits traffic, flightsBanik said various proposals pertaining to the collaboration are being finalised. “The Chinese students interested in studying MBA course under IIM will have to do a yearly language course before taking up MBA on the proposed campus. The medium of instruction will be English,” he added.IMI presently has three campuses — Kolkata, Bhubaneshwar and Delhi. Sichuan Academy of Social Sciences, which was founded in 1978, has been currently developed into a research base and centre of philosophy and social sciences with a wide range of subjects, reasonable talent structure, distinctive academic features and outstanding scientific research achievements in Sichuan Province. Also Read – Speeding Jaguar crashes into Merc, 2 B’deshi bystanders killedTalking about another major initiative, Banik said IMI is also working on a plan to impart training in English to as many as 70,000 teachers of Bangladesh, including both primary and secondary school teachers. The Bangladesh government had approached Asian Development Bank (ADB) for loan and has been allocated Rs 179 crore for the purpose of scaling the English communication skills of their teachers. “They are in search of an ideal institute and we are in talks for finalising the modalities. The training on communication skills will lay emphasis on the use of technology for teaching,” Banik said. The training will be in batches, phase-wise.IMI Kolkata that presently runs a two year PGDM course is planning to start an Executive MBA programme from 2019 and MBA in Entrepreneurship from 2020.last_img read more

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Motivated people control their destiny

first_img“The importance of motivation (or MO), otherwise known as drive and ambition, is of critical importance to a successful life and overall subjective well-being,” Dr. Bobby Hoffman, an educator and researcher in cognitive and motivational efficiency at the University of Central Florida, told in an e-mail interview from Orlando that grew out of his response to a book review that this correspondent had done.“Motivated people feel in control of their destiny and look at adversity as an opportunity for personal growth,” he added. Also Read – ‘Playing Jojo was emotionally exhausting’The degree of effort we are willing to invest in a task is a measurement of motivation. Hence, it is not surprising to know that all the personalities interviewed by Hoffman in sports, music, politics, business and entertainment as examples of motivated behaviour for his latest book, “Motivation for Learning and Performance”, had one common attitude to life that bonded them – that of elevated control beliefs.They did not shift blame for any life or career setbacks, because “each individual felt in control of their destiny and truly believed that their decisions and behaviours determined what they do, where they do it, and how it turns out”. Also Read – Leslie doing new comedy special with NetflixSelf-awareness, which is a conscious recognition of our personal beliefs and an understanding of how those beliefs influence the targets we set and the strategies we use to attain our chosen objectives, is a key aspect of MO.Alec Torelli, a professional poker player, who wants a certain lifestyle, uses his ability to achieve his goal of travelling the world freely and experiencing new things without being tied down to a desk or a job with regular hours. Despite not being excited by public recognition of his talents, Torelli is motivated by his strong control beliefs — though he cannot control the cards he is dealt, he is in control of how he responds to them. “We are all self-motivated, but we are rarely 100 per cent aligned with the expectations of schools, employers, and some of the important people in our lives,” Hoffman explained. On techniques he uses to motivate his students and his two children, he said that the strategies differ as different groups and cultures have specific and appropriate normative behaviour. “What works in one setting may be denounced in another.” For example, the degree of independence we cultivate in our children changes according to the country of birth, secular values, and political climate, the educator said.As a professor, Hoffman leads by example, demonstrating adaptive motivational behaviour and strategies. For instance, he breaks down complex work into manageable pieces which “address maladaptive emotion and instills confidence” in an anxious student.He also lays stress on reflection as a huge part of motivated behaviour. “As life-long learners, we need to continually reassess the effectiveness of our efforts and be open to making changes,” he said.For entrepreneurs and business holders, Hoffman advises compatibility with individuals and organizational priorities; because “although we can list many factors that relate to organisational success that do not include people, ultimately people must execute the organisational strategy”.“The abundance of such factors inhibits concluding that one factor has a dominant influence,” he added.The diverse group of people the author interviewed are entwined in the conversational narrative, making students feel connected to the profiles, and “learn that all successful people encounter obstacles and make mistakes just like we do.”last_img read more

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Kolkatans get to feast eyes on sun halo

first_imgKolkata: People in Kolkata and its surroundings got a celestial treat on Wednesday morning at around 10:45 am, as they looked up in the sky towards the sun. A spectacular ring of light was seen surrounding the sun. The ring was a perfect circle with the sun at the centre. This absolutely dazzling ‘halo’ of the sun was observed till noon.People were enthralled and excited by this celestial sight, which was evident as photographs of the phenomenon went viral on social networking sites. Also Read – Speeding Jaguar crashes into Merc, 2 B’deshi bystanders killed”The 22 degree halo of the sun” as it is called, because the angular distance of the light ring is exactly 22 degrees from the sun at the centre, occurs because of the interaction of sunlight with ice crystals suspended in the air in a particular type of cloud.”The ice crystals responsible for the halos are typically suspended in cirrus or cirrostratus clouds in the upper troposphere, which are typically present at a height of 5-8 km from the earth’s surface,” said Debiprosad Duari, director, research & academic, MP Birla Planetarium. Also Read – Naihati: 10 councillors return to TMC from BJPAccording to Duari, the particular shape and orientation of the crystals are responsible for the type of halo observed. It is hypothesised that the ice crystals present in the cirrus clouds are typically hexagonal in shape. When the sunlight falls on these crystals, it gets refracted while passing through hexagonal crystals and gets bent by 22 degrees or more. As a result, a bright ring of light forms around the sun at an angle of 22 degrees.The 22 degree halo of the sun can occur whenever there are moisture-laden cirrus clouds in the sky near the sun and it is a local phenomenon.This is not a very rare phenomenon and happens quite regularly at different places, depending upon favourable atmospheric conditions. The duration of the 22 degree halo of the sun depends on the cloud formations and the air currents in the atmosphere.last_img read more

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