Ultrasonic vibrations force a polymer to be a semiconductor

first_img © 2017 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. Journal information: Science Explore further Design of mechanochemically generated conjugated polymer. (A) Insulating CBE mechanophores connected with π systems, designed to rearrange to continuously extended conjugation under force. (B) Thermally unstable CBEs with sp2 carbon substituents at the 3 and 4 positions. (C) Ladderene-based mechanophore, which would undergo tandem mechano-cycloreversions to give conjugated oligoene. (D) Natural [5]-ladderane fatty acid (5) from anammox bacteria. (E) Design of mechanically active polyladderene via ROMP of ladderene. Credit: (c) Science (2017). DOI: 10.1126/science.aan2797 (Phys.org)—A team of researchers at Stanford University has used mechanical force to transform a molecule from one form to another—from a nonconductive state into a semiconductor. In their paper published in the journal Science, the group describes the process they developed and possible applications.center_img As the researchers note, using mechanical force to change a molecule from one form to another (by prying open their bonds) has been a popular research subject over the past decade, leading to a new field now known as mechanochemistry. In this new effort, the researchers used a physical force to “unzip” a nonconducting polymer, transforming it into a semiconductor.In their work, the team studied chunks of cyclobutanes to learn more about their structure. In their natural state, they exist as a polyladderene molecule with the appearance of stairs leading from a low point to a high point, and walls holding them in place. The team thought that if they could pull the walls apart, effectively unzipping the staircase, they could transform it into a zig-zag-looking polymer known as a polyacetylene, which is a semiconductor.The cyclobutanes were placed in a solution and subjected to sonic waves exerting opposing forces on the molecule, causing it to unzip and stretch out into nearly a flat structure (into alternating C=C double bonds). The group reports that the solution, which was initially clear, slowly changed to blue, and eventually became dark as it was filled with a mesh of nanowires. The researchers note that the material could be used as a means for measuring stresses in other materials. It could also be used to mimic human senses in a robot because it is able to use a mechanical force to convert a material into a wire capable of carrying an electronic signal. But before that can happen, the team acknowledges that more work needs to be done to make the structures simpler, as they are now they are too complex for industrial applications. Citation: Ultrasonic vibrations force a polymer to be a semiconductor (2017, August 4) retrieved 18 August 2019 from https://phys.org/news/2017-08-ultrasonic-vibrations-polymer-semiconductor.html More information: Zhixing Chen et al. Mechanochemical unzipping of insulating polyladderene to semiconducting polyacetylene, Science (2017). DOI: 10.1126/science.aan2797AbstractBiological systems sense and respond to mechanical stimuli in a complex manner. In an effort to develop synthetic materials that transduce mechanical force into multifold changes in their intrinsic properties, we report on a mechanochemically responsive nonconjugated polymer that converts to a conjugated polymer via an extensive rearrangement of the macromolecular structure in response to force. Our design is based on the facile mechanochemical unzipping of polyladderene, a polymer inspired by a lipid natural product structure and prepared via direct metathesis polymerization. The resultant polyacetylene block copolymers exhibit long conjugation length and uniform trans-configuration and self-assemble into semiconducting nanowires. Calculations support a tandem unzipping mechanism of the ladderene units. New algorithm finds the optimal bond breaking point for single moleculeslast_img read more

Evenings and couplets for Mirza Ghalib

first_imgA two-day event will be organised on the 144th death anniversary of Mirza Ghalib to showcase his rich legacy, an organisation dedicated to the legendary Urdu poet announced. Yadgar-e-Ghalib will be held on 26-27 April, the Ghalib Memorial Movement (GMM) said.The event will feature the release and screening of a film on Ghalib produced by Kathak dancer Uma Sharma. In addition recital of couplets of the poet by author Pawan K. Verma, and a mushaira will create the atmosphere of a bygone era. ‘While the couplets have been specially selected for the occasion that will leave the listeners spellbound, the dancers will capture moods befitting the death anniversary,’ GMM said.last_img

Pamper your skin with chocolates strawberries

first_imgDuring the monsoon, women often complain of skin dryness and painful pimples and try to cure them by using beauty products.Makeup expert Ishika Taneja shares quick tips and essential natural remedies  for different skin types.Dry Skin: During monsoon, people experience skin dryness mainly because of dehydration caused by lack of skin repairing vitamins.Clean your face with soap-free cleanser as it doesn’t makes your skin dry but keeps it soft. You can make your own toner by mixing a few drops of honey and two tablespoons of milk. It not only tones but also hydrates the skin. You can also use a sunscreen lotion with SPF 30. It protects and hydrates the skin. Also Read – ‘Playing Jojo was emotionally exhausting’Natural remedies: Pomegranate seeds are loaded with anti-ageing compounds like antioxidants and vitamin C and nourish dry skin. Blend two tablespoons of pomegranate seeds and one cup uncooked oatmeal. Add two tablespoons of honey and buttermilk. Apply on your face for a few minutes, then rinse. It helps remove dead skin cells.Recommended facial: Chocolate facialOily skin: Monsoon increases skin problems for those who have oily skin. It makes the sebaceous glands, which are responsible for oil secretion, hyperactive. Also Read – Leslie doing new comedy special with NetflixThe oil secretion and sweat are deposited on the skin and trap dirt and bacteria. This gives rise to blackheads, whiteheads, breakouts and sometimes painful pimples.An oil-controlling cleanser that cleans the pores and controls the oil secretion is good for oily skin. Use an alcohol-free toner to retain the skin’s pH balance. For sun protection, pick a gel-based sunscreen lotion with SPF 30 that adds moisture but isn’t too creamy.Natural remedies: Take two tablespoons of papaya pulp, one tablespoon of curd and an ounce of aloe vera gel. Mix it well. Add a few drops of lavender oil. Papaya works as a great de-tanner, the curd clears blemishes, the aloe vera soothes the skin and the lavender boosts rejuvenation.Recommended facial: Aloe vera facial.Combination skin: This skin type is a mix of oily and dry skin. Cheeks usually become dry and other parts of the face, specially the nose, get oily because of the excessive humidity during monsoon.Anti-bacterial cleanser is perfect for this skin type. For toning, add two drops of lemon juice to cold water and wash your face with it. Lemon is not only refreshing but also works as a cleanser.Before stepping out, apply a hydrating sunscreen lotion with SPF 30 as the skin loses moisture due to sweating. Monsoon also aggravates the problem of dandruff, which can further lead to hair fall, breakouts or acne outburst. So it’s equally important to keep your hair clean.Natural remedies: A strawberry face pack is perfect for this skin type. Blend half a cup of frozen or fresh strawberries with one cup of yogurt and one-and-a-half tablespoons of honey. Apply it on your face for a soft and smooth skin.Recommended facial: Fruit facial with milk.last_img read more

Indians seem to be comfortable with Caucasians writing about themselves

first_imgJhinuk Sen chats up Raghu Srinivasan about his The Avatari, the story of a British man’s journey through Ladakh, Pakistan and Afghanistan that is mainly set in 1986, during the height of the Soviet Afghan War. Read on… How did The Avatari happen? How did this story come about?The Avatari owes its origins to a drink I had with an old timer huddled over a stove, in an arctic tent in the shadow of the Karakorum ranges. The old timer had been a mountaineer before he had had a bad fall and had tramped all over the Karakorums, spending much of his time with local porters and guides. It was from them that hewho had picked up a story of a group of Germanswho had formed an expedition to search for Shambhala, and were never heard of again. Also Read – ‘Playing Jojo was emotionally exhausting’What kind of research did you need to do for The Avatari?I am an avid reader, and the one thing I promised myself while writing The Avatari was that I should attempt to make no factual errors. I remember reading San Andreas by Alistair Maclean; where one of the characters is a Pakistani, but the story is set during World War II – when there could have been no Pakistanis. So starting with reading the BardoThodol (The Tibetan Book of the Dead) and everything that has ever been written about the Shambhala myth, to events as they chronologically happened in history in 1296, 1956, 1963 and 1986 has been researched. I had to do a fair bit of reading on Kublai Khan and Marco Polo as also the Afghan War. Likewise I needed to read up on travelogues of people who had visited the enchanting places which Henry Ashton and his team visit in the book. Also Read – Leslie doing new comedy special with NetflixWhat were the toughest times you faced as The Avatari fell into shape?The Avatari actually began as a short story which I gave up after the first 100 pages. Also it was to deal with a mystical journey and then metamorphosed into an action-quest-adventure.  So at times I must confess I was not totally in control, and the story was writing itself. Also I would write parts which I would fall in love with but had no relation to the movement of the story. I think excising those, especially for a first time author, was really tough. The longest time was spent in figuring out how Shambhala would confer immortality; making it believable to the reader. What was also difficult was getting the story to be chronologically correct; both in terms of years and dates. I received a lot of help getting that right from my wife, Sumita. And … what were the best times?The best times were when I was writing about the military action or the mountains. I could sit on the computer the whole night typing away, actually feeling the sweat stinging my eyes, the sound of gunfire and the icy wind on your face. I would sit at the computer long after I had finished writing, and enjoy the emotion as it slowly drained away.How easy or difficult was it to get a story like this figured out in your head and on paper?I think I started out with a beginning and an ending and some marks in between which I had to get to on the way. But then, like I said at times the story would write itself and I would veer away from the mark, having to create a new one. When you have so many characters and so many periods in history to deal with, the difficult part is to decide how much of detail you need to go into. For the last seven years I have always had The Avatari humming in my head – at times I would be unaware of what was happening around me (much to Sumita’s annoyance). There were times when I thought that I wouldn’t be able to make the story stick and I couldn’t resolve the contradictions for many months; and then luckily I would have a ‘eureka’ moment.Why pick a British hero? Just for argument’s sake – why not an Indian?The story involves the hero undertaking a journey through Ladakh, Pakistan and Afghanistan, and is mainly set in 1986, during the height of the Soviet Afghan War. I don’t think an Indian could have gone to those places at that time without arousing tremendous suspicion or being interned at some stage.You don’t really have an Indian character in the book and even the story touches India only briefly in Leh – was this a conscious call?Like I said it was a question of locations and periods of history where an Indian on the group would have stood out like a sore thumb; and the discerning reader would have easily made out that it was a poorly contrived attempt to bring in an Indian character. Here I would like to make a point that Western writers don’t seem to get asked about the same thing – starting from Jungle Book and The Far Pavilions right up to Dalrymple and Patrick French; Indians seem to be comfortable about Caucasians writing with authority and felicity about themselves. It’s just that an Indian writer hasn’t tried the obverse out so far. As far as locations go, it was just that the story found itself happening at these places.How true are the legends of the Avatari and the Shambhala?They are true!  When you live for eight months on the wrong side of the great mountains, with the passes closed – it is an enchanted world which not many people have the privilege to be part of. For Tibetans, Shambhala exists; definitely on the spiritual plane and possibly at the physical level also. Similarly, the Tibetans believe deeply in the concept of an Avatari – and so do I.What’s next in the pipeline?I am mulling over a story set in China in the near future, and like The Avatari it has historical references. So far I have only the broad contours, but I am hopeful that I will be able to write it faster than The Avatari which took seven years!last_img read more

St Xaviers Bcom student found dead

first_imgKolkata: Mystery shrouds the death of Rik Bose (21), a B.Com final year student from St Xavier’s College whose body was found hanging from a ceiling fan inside his residential apartment at Purbachal.Police have started a case of unnatural death in this connection. According to preliminary investigation, police suspect that he might have committed suicide following depression. Victim’s family members found the victim hanging from the ceiling fan inside his room which was locked from inside. The incident took place at around 1.10 pm on Wednesday afternoon. After being informed, police reached the spot and recovered the victim by breaking open the door. He was rushed to MR Bangur Hospital where he was declared brought dead by the doctors. Also Read – Heavy rain hits traffic, flightsNo suicide note was, however, recovered from the place of incident. A resident of Abhisikta I, Bose hanged himself by the help of the power cord of Laptop. The victim was a final year student of B.Com at St Xavier’s College. Police suspect that he was suffering from depression as he was not well prepared for final exam scheduled to start from 18 April.According to police, no external injury marks were found in his body. The circumstantial evidences also suggest that he committed suicide. Police came to know that the victim apprehended that his exam results would not be up to the mark. Also Read – Speeding Jaguar crashes into Merc, 2 B’deshi bystanders killedPolice have collected samples from his room for the sake of investigation. They are also going through his mobile phone and other electronic gadgets of the victim. In the course of investigation, police came to know that Bose was not mixing with his friends for the past few days.Cops are also investigating other possible angles into the incident. They are also probing if the victim was involved in any relationship. The family members of the victim and his friends are being interrogated in this connection so far. A probe has been initiated.last_img read more

Bar Association lifts ceasework in Calcutta HC

first_imgKolkata: The Bar Association of the Calcutta High Court on Saturday lifted its two-month-long ceasework following the Centre’s notification to appoint four more judges and a permanent chief justice, an official said. The lawyers will resume work in the high court from Monday, Bar Association President Uttam Majumder said at a press conference here.The ceasework at the high court, which had 2.22 lakh cases pending before it at the end of January, had commenced on February 19 to press for the appointment of more judges and a chief justice for the high court which had been headed by acting chief justices for over three years with the exception of only three months. The Bar Association, which commands the support of majority of the lawyers, said the decision to lift the ceasework was taken unanimously in consultation with other striking lawyers’ bodies. Also Read – Heavy rain hits traffic, flights”Today (Saturday) we got the notification from the Centre about the appointment of four new judges who will take over from next week. The high court will also have a permanent chief justice from next week. In the wake of these developments, we are lifting the ceasework,” Majumder said.He said three judges had been appointed by the Centre in March and with four new appointments on Saturday, the high court now has 37 judges which is a little over 50 percent of the sanctioned strength of 72 judges. To a question about the Bar Association’s earlier decision that the ceasework will continue till May 11, Majumder said: “We had asserted that the ceasework will automatically stand withdrawn if the appointment of new judges is notified in the meantime.”last_img read more

Jagaddal SI hangs self inside quarter

first_imgKolkata: Mystery shrouds the death of a sub-inspector of Jagaddal police station whose body was found hanging inside his quarter on Monday night. According to preliminary investigation, police suspect that the victim might have committed suicide. The victim, Arindam Kundu was assigned in Panchayat poll duty on Monday. After the duty was over, Kundu went to his quarter on Monday evening. Some of his colleagues on Tuesday morning found the door was locked from the inside. Police later broke open the door and found the victim hanging from Also Read – Heavy rain hits traffic, flightsthe ceiling fan. The body was later sent to a hospital for post-mortem. The victim’s wife and two children live at a house in Dum Dum. After starting an investigation, police came to know that Kundu had a quarrel with his wife over an issue. It was also learnt that his wife wanted to work somewhere to which Kundu had objected. The couple had some war of words over the issue.After going through WhatsApp messages, police came to know that the victim was mentally depressed over certain issues. The circumstantial evidence suggests that he committed suicide following depression from family related issues. Police have started a detailed probe in this regard. They are looking into all possible angles which might have prompted the victim to commit suicide. The family members of the victim demanded an independent probe into Kundu’s death. The victim’s wife, however, told police that the incident came to her like a shock. She had a discussion with her husband and could never imagine he could take such a drastic step. The investigators are waiting for the post-mortem report.last_img read more

Modis trusted lieutenants to stay put in battleground Bihar

first_imgThe Central Government has come to a standstill with nearly half of the Cabinet colleagues of Prime Minister Narendra Modi campaigning in Bihar for the upcoming Assembly polls, which are being seen as a close contest between the ruling NDA and the regional alliance.Besides PM Narendra Modi, who will remain in Bihar during his political rallies, Home Minister Rajnath Singh, Finance Minister Arun Jaitley, Foreign Affairs Minister Sushma Swaraj, Transport Minister Nitin Gadkari, Steel Minister Narendra Singh Tomar, Health Minister JP Nadda, Agriculture Minister Radha Mohan Singh, HRD Minister Smriti Irani, Telecom Minister Ravi Shankar Prasad, Chemical and Fertilisers Minister Ananth Kumar, Food and Consumers Minister Ram Vilas Paswan, and MSME Minister Kalraj Mishra are camping in the state. Also Read – Punjab on alert after release of excess water from Bhakra damApart from Cabinet Ministers, the ten Ministers of State, including four MoS with independent charge have been deployed to win the crucial state poll. The Ministers of state include Power Minister Piyush Goyal, Skill Development Minister Rajiv Pratap Rudy, Petroleum Minister Dharmendra Pradhan, Textile Minister Santosh Gangwar, MoS Rural Development Ram Kripal Yadav, MoS Railways Manoj Sinha, MoS HRD Upendra Kushwaha, MoS Finance Jayant Sinha, and MoS Food Processing Sadhvi Niranjan Jyoti.Central Ministers Radha Mohan Singh, Ravi Shankar Prasad, Ananth Kumar, Ram Vilas Paswan, Dharmendra Pradhan, Rajiv Pratap Rudy, and Ram Kripal Yadav have been deployed on permanent basis till the last phase of the polls. Prime Minister Modi, who started his campaign with four rallies on Thursday, will stay in Patna for two days to have a real-time assessment of the electioneering process.last_img read more

You need 27 seconds to regain attention after phone use

first_imgIf you thought it is okay to talk to your car infotainment system or smartphone while driving then think again. New research has found that it takes up to 27 seconds to regain full attention after issuing voice commands.University of Utah researchers conducted two studies for the traffic safety charity AAA Foundation for Traffic Safety.One of the studies showed that it is highly distracting to use hands-free voice commands to dial phone numbers, call contacts, change music and send texts with Microsoft Cortana, Apple Siri and Google Now smartphone personal assistants.  Also Read – ‘Playing Jojo was emotionally exhausting’In another study, they examined voice-dialing, voice-contact calling and music selection using in-vehicle information or “infotainment” systems in 10 model-year 2015 vehicles. Three were rated as moderately distracting, six as highly distracting and one as very highly distracting, the US-based traffic safety non-profit said in a report.“Just because these systems are in the car doesn’t mean it’s a good idea to use them while you are driving,” said senior author of the two studies David Strayer, psychology professor at University of Utah.“It is better not to use them when you are driving,” Strayer said. The research also found that, contrary to what some may believe, practice with voice-recognition systems does not eliminate distraction.last_img read more

Steps to check arbitrary fare hike by auto drivers around Behala

first_imgKolkata: The state Transport department is going to hold a meeting next week to bring an end to the menace of arbitrary fare hike by auto-rickshaw drivers in and around Behala after the caving-in of the Majerhat bridge.Suvendu Adhikari, the state Transport minister, said: “The matter has come to our notice and necessary steps would be taken up in this connection. It is true that some auto-rickshaws are charging arbitrary fare whenever they get the opportunity in Taratala and Behala area.” Also Read – Rain batters Kolkata, cripples normal lifeHe further said that there will be a meeting in this connection next week after Viswakarma Puja. People’s representatives from the area, officers of the Kolkata Police, personnel from the depot at Thakurpukur and Taratala will be present in the meeting. “The matter will be sorted out soon as it has been done for the Ultadanga to Sector V route. There are no more complaints in connection with the Ultadanga to Sector V route. Similarly, the issue at Behala and Thakurpukur will also be resolved,” he said. Also Read – Speeding Jaguar crashes into Mercedes car in Kolkata, 2 pedestrians killedAdhikari further added that similar to the “Pathadisha” app that helps to check real-time movement of buses, an app to check the same for vessels that operate through inland waterways will also be introduced. While speaking about the surge fare in app-based cabs, the minister added: “As of now the role of Ola in this connection is satisfactory contradictory to that of Uber. Ola is complying with the advisory of the state Transport department and our officials went to the Ola centre and found that they are maintaining the advisory. But Uber is delaying the process and has not taken out officials to its centre. So I have said that the role of Ola is satisfactory while it is not so in the case of Uber in terms of surge fare.” Moreover, in the programme that was held on Thursday, around 50 cars were handed over to driver partners as per the Memorandum of Understanding (MoU) signed between the West Bengal Transport Infrastructure Development Corporation Limited (WBTIDCL) and Ola in the Bengal Global Business Summit 2018 to create 5,000 employment opportunities.last_img read more

Let grandpa walk the dog for a healthier life

first_imgFor older adults who share a special bond with pets like dog, walking can benefit in lowering body mass index (BMI), cause fewer doctor visits and more frequent exercises, and increase in their social circle, finds a study.People with higher degrees of pet bonding were more likely to walk their dogs and to spend more time walking their dogs each time than those who reported weaker bonds, the researchers found.“Our study explored the associations between dog ownership and pet bonding with walking behaviour and health outcomes in older adults,” said Rebecca Johnson from University of Missouri-Columbia in the US. The team analysed 2012 data from the “Health and Retirement” study that included data about human-animal interactions, physical activity, frequency of doctor visits and health outcomes of the participants. “The results showed that dog ownership and walking were related to increases in physical health among older adults,” said Johnson. Also Read – ‘Playing Jojo was emotionally exhausting’The findings can provide the basis for medical professionals to recommend pet ownership for older adults and can be translated into reduced health care expenditures for the ageing population.The results also revealed that pet walking offers a means to socialise with pet owners and others.“The study provides evidence for the association between dog walking and physical health,” the researchers added in the paper published in the journal The Gerontologist.last_img read more

Musthave work shoes for every woman

first_imgWho says that shoes meant for office are boring? Instead, there are a plethora of styles that are extremely classy for a highly-appealing and confident professional look. Try for block-heeled or flaunt wonderful wedges at work, says an expert.Juan Pablo Malaver, Designer, Bata Design Centre, has shared five shoes every working woman should own.Neutral palettes: A pair of beige, brown or tan footwear is a must in your arsenal for its versatility. Be it pumps, wedges, ballerinas or loafers, a neutral tone in any style ensures a subtle and elegant look. Also Read – Add new books to your shelfLow to medium height block heels: Block-heeled closed footwear looks uber-chic with formal classics. Carry yourself with all the flair as you stand tall in these heels and impress everyone around with your smart and confident look.Patent leather loafers: Sleek style loafers in brown, beige or black colours with metal detailing also add class to your look in a jiffy. Be it straight-cut pants, pencil skirts or loose-fit trousers, these loafers are sure to complement your professional look in the swankiest manner. Also Read – Over 2 hours screen time daily will make your kids impulsiveWonderful wedges: Not just style, wedges ensure extreme comfort all day long. Wedge heels look great with almost all the formal ensembles and can lend a confident look to the wearer.Classic black: Investing in timeless pieces won’t let you regret ever. A pair of black footwear is a must-have for every professional woman as it gels with almost every outfit and simultaneously gives an elegant appeal.last_img read more

Go camping

first_imgStruggling to reset your sleep cycle disrupted by night outs, higher smartphone use and artificial lights? Taking more weekend camping trips could help you go to bed earlier, regardless of the season, a new study suggest.Many of us sit up late into the night, watching TV, fiddling with our smart phones, or reading a book by lamp light.Now, researchers at University of Colorado Boulder in the US suggest that the solution to the sleeping woes could be as simple as spending more time outdoors in the Sun. Also Read – Add new books to your shelfA few days spent back-country camping is enough to send people to bed earlier, no matter the season, they said.”Late circadian and sleep timing in modern society are associated with negative performance and health outcomes such as morning sleepiness and accidents, reduced work productivity and school performance, substance abuse, mood disorders, diabetes and obesity,” said Kenneth Wright from the University of Colorado Boulder.”Our findings demonstrate that living in our modern environments contributes to late circadian timing regardless of season and that a weekend camping trip can reset our clock rapidly,” said Wright. Also Read – Over 2 hours screen time daily will make your kids impulsiveAn earlier study by the team found that our modern exposure to electrical lighting causes about a two-hour delay in our internal clocks, as evidenced by a shift in the normal fluctuations of the hormone melatonin.They found that a week of summer sun shifted those internal clocks back, sending people to bed earlier, without changing how long they slept.Researchers sent another group of five active people camping for a week in the chilly Colorado winter, right around the time of the winter solstice when the days were at their shortest – no flashlights or cell phones allowed – and watched what would happen to their sleep and hormonal rhythms. The data suggest that our modern lifestyles reduce light exposure in the winter by a whopping 13 times. With increased time spent outdoors, people in the study started going to bed at a more reasonable hour.Their internal clocks, measured by the timing of when melatonin levels began to rise in their bodies, shifted more than 2.5 hours earlier. Their sleeping patterns followed these changes in melatonin levels and people went to sleep earlier.Wright and his colleagues also asked whether a camping weekend in the summer was enough to shift the clock. They sent nine active people camping while another five stayed at home.A weekend spent camping prevented the typical weekend pattern of staying up late and sleeping in and prevented individuals’ circadian clocks from being shifted even later.The findings show that people are responsive to seasonal changes in daylight just as other animals are. “While our modern conveniences may leave us out of synch, our clocks can be readily reset with light exposure”, researchers said. “If a person wants to go to bed at an earlier hour, then a weekend spent camping could be just the thing”, Wright added.last_img read more

Santhal beats at Surajkund

first_imgThe second day of Surajkund International Craft Mela 2017 in which Jharkhand is participating as the theme state, began with the display of ‘Santhal,’ interacting with people who visited the mela with its specialities in art and culture.The tribe exhibited through its actions and body languages, its nature and how it effects their lives and basic amenities. The ‘Santhals’ did not fall behind in displaying their belief in sustainable development. Also Read – Add new books to your shelfThe tribe were also in full display as to how their traditions are celebrated and language is spoken to effectively communicate their cause with folks, in and around, which the visitors enjoyed and relished the most in the Surajkund mela.Santhal tribe is the third largest tribe of India, belonging to the pre-aryan period. They were great fighters who waged war against the British in 1855. They speak Santhali belonging to the Austro-Asiatic lingua family.The participating ‘Santhal’ community in exhibited their preferences in terms of food which is largely rice and as to how it is served to the guests who visit them at Jharkhand. This exhibition of acceptance was also enjoyed by the spectators who came to the second day of Surajkund International Craft Mela.last_img read more

Mercury plummets as heavy rain hailstorm lash city

first_imgKolkata: Rains and hailstorm accompanied by strong winds lashed various parts of the city on Sunday evening, bringing the mercury down by a few notches.The hailstorm hit several parts of the Northern fringes of Kolkata, some parts of Rajarhat and New Town and its adjacent areas in the evening. In some parts, excited people took to social media to share pictures of roads covered with hail. A tree fell on a taxi at Shyambazar, halting traffic for a while. Also Read – Bose & Gandhi: More similar than apart, says Sugata BoseSome persons have reportedly been struck by lightning in different parts of the state. The city also received moderate rainfall that lasted for nearly an hour. Winds measuring around 50-55 km per hour swept through various South Bengal districts. The traffic movement in some parts of the city slowed down following the rain. Districts like Purulia, Bankura, West Burdwan, Jhargram and West Midnapore witnessed heavy thundershower during the evening hours. The temperature may hover around 33 degree Celsius during day time in the next 24 hours but the mercury is expected to slide down during the evening. Also Read – Rs 13,000 crore investment to provide 2 lakh jobs: MamataAccording to the Regional Meteorological Centre at Alipore, two low pressure troughs have formed over Chhattisgarh and Maharashtra each. The low pressure troughs are expected to gain strength and as a result, various South Bengal and some North Bengal districts may receive rainfall in the next 24 hours. In the past 24 hours, the highest temperature of the city was recorded at 32.5 degree Celsius, while the lowest temperature touched 23.5 degree. The Met department had already predicted rainfall in various parts of South Bengal on Sunday and Monday. The sky may remain cloudy in some parts in the next 24 hours. A couple of days ago, various South Bengal districts had witnessed light to moderate rains due to the impact of both Western disturbances and a wind which was blowing towards the West. It may be mentioned here that the people in the city and also in some South Bengal districts started feeling comparatively hot in the past two weeks, as the mercury started to rise. People were also experiencing discomfort as the humidity level was also on the higher side during daytime.last_img read more

Two Royal Bengal tiger cubs to be on display

first_imgDarjeeling: The Bengal Safari is all set to put on display two inmates, growing up steadily behind the curtains. Rika and Kika, two Royal Bengal tiger cubs will soon be housed in the display area of the park. The cubs had been named by Chief Minister Mamata Banerjee.”On May 10, Shila, the lone female Royal Bengal tiger of the Safari had given birth to three cubs. In September, one of the cubs named Ika died from infection. However, Rika and Kika are doing fine. They are a year old now and will be housed in the display area on the Park from next month,” stated an official of the Park. Also Read – Rs 13,000 crore investment to provide 2 lakh jobs: MamataThe captive bred tigers had been kept in a non-display area in quarantine like environment so that they do not catch any infections. The Safari also boasts of two male Royal Bengals, Snehasish and Vivan. Snehasish, at present, has been sent to Alipore Zoo, Kolkata, for a captive breeding programme there. The cubs have been separated from their mother and are housed in a separate enclosure in the non-display area. “The cubs are in good health and spirit and ready to be released in the display area,” stated Rajendra Jakhar, in-charge of the Bengal Safari Park. While Kika weighs 68 kg, Rika is 65 kilos. Also Read – Lightning kills 8, injures 16 in stateIncidentally the Park, a brainchild of the Chief Minister, was inaugurated in 2016. It is spread over an area of 290 hectares. At present the park boasts of elephants, two Royal Bengal tigers, two leopards, barking deer, spotted deer, Sambars, a rhino, six gharials, a pair of Himalayan Black Bear and birds. The park at present boasts of a herbivore safari, tiger safari, bear safari and elephant safari. The Bengali Safari Park is the first of its kind in the state. With its exhibits and elephant rides, it attracts a large number of visitors both local residents and tourists alike. Since April 2018 till February this year, a footfall of 2.55 lakh have been recorded at the Safari with earning to the tune of Rs 3.20 crore through the sale of tickets.last_img read more

Moral decisions linked to brain activity

first_imgWhat makes our decisions morally just or objectionable? It is the brain activity that is responsible for the differences in our moral behaviour, reveals a new study. “Our study demonstrates that with moral behaviour, people may not in fact always stick to the golden rule. While most people tend to exhibit some concern for others, some others may demonstrate ‘moral opportunism’, where they want to look moral but want to maximize their own benefit,” said lead author Jeroen van Baar, a postdoctoral research associate at Brown University, US. Also Read – Add new books to your shelfFor the study, published in Nature Communications journal, researchers developed a computational strategy model to examine the brain activity patterns linked to the moral strategies. The team tried to determine which type of moral strategy the participant was using – inequity aversion; guilt aversion; greed or moral opportunism. The study showed that people used different moral principles to make their decisions and also changed their moral behaviour depending on the situation. “Our results demonstrate that people may use different moral principles to make their decisions, and that some people will apply different principles depending on the situation,” said Chang.last_img read more

The Private Scandals that Followed the Rebellious Creator of Pippi Longstocking

first_imgShe was boyish, she was opinionated, she was independent, sassy, and determined to live a “modern” life: Is this the rebellious pig-tailed Pippi Longstocking or the Swedish author who imagined her? Turns out the answer is both! Astrid Anna Emilia Ericsson, born in 1907, was raised in a deeply religious family in a tight-knit town in southern Sweden. During her teenage years, she began charting her own course, which was pretty unusual for the day. She cropped her hair short and took to wearing trousers. She began writing, and her evident talent caught the eye of a local newspaper editor, Reinhold Blomberg, who knew her parents. He hired her as one of the only female trainees.Astrid, just 19 at the time, thrived at the newspaper, but unfortunately for her future, her editor was interested in more than just her writing talent. Though Blomberg was in the process of divorcing his second wife, he was still married. He had seven children, the youngest of whom was the same age as Astrid.Astrid and Blomberg soon began an affair. “Girls are so silly,” she later told a TV interviewer, according to Jens Andersen’s new biography Astrid Lindgren: The Woman Behind Pippi Longstocking. “Nobody had ever been seriously in love with me before, and he was. So, of course, I thought it was rather thrilling.”Astrid Lindgren in 1960The affair was thrilling until Astrid became pregnant, and then it became a problem. To say it was a scandal is to put it mildly. Her parents, tenant farmers at the local rectory, were horrified and felt betrayed. They worried about how their neighbors would judge their daughter’s behavior.Defiant Astrid decided to leave the suffocating confines of small-town life and fled to Copenhagen to give birth anonymously in a more forgiving cosmopolitan city. “Being the object of gossip felt almost like being in a snake pit, so I decided to leave the snake pit as soon as possible,” she wrote, according to Andersen’s biography.For the first few years of his life, Astrid’s son, Lasse, was raised by a foster mother in Denmark, while Astrid lived in a boarding house in Stockholm, learning stenography—a skill that would prove useful once she began publishing fiction. It seems she once again had an affair with her employer, as she married her boss, Sture Lindgren, in 1931, shortly after his divorce with his wife was finalized. After they were married, Lasse came to live with them.Inger Nilsson at the age of 12 as Pippi Longstocking at the RAI in Amsterdam 1972 Peters, Hans / Anefo – Nationaal Archief CC BY-SA 3.0 nlThree years later, Astrid had a daughter, Karin. When Karin was 7, bedridden with pneumonia and bored, she nagged her mother, as so many kids will do, to tell her a story. Karin made up the name on the spot: “Tell me a story about Pippi Longstocking.”“I didn’t ask her who Pippi Longstocking was,” Astrid Lindgren told The New Yorker in 1983. “I just began the story, and since it was a strange name it turned out to be a strange girl as well.”Lindgren in 1924The “strange girl” reflected not just her creator but the era in which she came to be. “Astrid’s war diaries from 1941 to 1943 indicate that Pippi was a response not only to the war but to the people behind its lunacy with their urge to terrorize and destroy,” Andersen writes in his absorbing biography.When Pippi Longstocking was first published in 1945, the rule-breaking, authority-defying, but fair and kind-hearted Pippi captivated a public coming off the brutal war years. Lindgren became immediately and immensely popular and influential in her home country, a champion of children’s rights.Lindgren receives the Right Livelihood Award in the Swedish parliament, 1994 Photo Ceyla de Wilka -CC BY-SA 3.0Astrid Lindgren’s tumultuous personal life was not yet free from scandal, however. Her husband, Sture, fell in love with another woman. Though Astrid and Sture did not divorce, he died soon thereafter of a heart attack at 51.Related story from us: When the Swedish author of “Pippi Longstocking” had to pay 102% in taxes, she fought the injustice with her best weapon: her writingNor was her life free from controversy. In 1976, she learned that tax laws would effectively charge her a rate of 102 percent. She fought the injustice with her pen, and “won,” sort of, reducing her tax rate to 80 percent, if that’s a victory.Astrid Lindgren passed away in 2002 at age 94.last_img read more

VIDEO LeBron and Cavs teammates ruthlessly heckled rockstar Channing Frye during shirtless

first_imgChanning Frye didn’t have his shirt with him, but decided to go ahead with his postgame interview after the Cavs sweep of the Raptors anyway. He won’t be doing that again anytime soon.Frye was heckled by a chorus of Cavs teammates, led by LeBron James, for being a ‘rockstar’ in his shirtless interview. They also called him out for wearing a Coachella-style beaded necklace.Frye laughed it all off and answered game questions in between getting ethered.It’s all fun and games when you’re 8-0 in the playoffs.last_img

How Google Apple Facebook and Others Use Your Personal Data Infographic

first_img Register Now » “Every breath you take, every move you make, I’ll be watching you.” The famous 1980’s song by The Police might as well be the mantra for major tech companies today.When you log onto the internet, click on a website or search a word, tech behemoths including Google, Apple, Amazon, Facebook and Yahoo are watching. They track your preferences, collect information about your online habits and develop a profile of you.Related: Microsoft Launches New Effort to Bolster Its Startup SupportThe infographic below, created by San Jose, Calif.-based retail-strategy firm Baynote, shows the type of data gathered by each of these five tech giants, the methods they use to collect your personal data and how that data is used. It also reveals the number of words in each company’s privacy policy, suggesting the complexity of each agreement.Click to Enlarge +Image credit: Baynote Growing a business sometimes requires thinking outside the box. June 28, 2013center_img 1 min read Free Webinar | Sept. 9: The Entrepreneur’s Playbook for Going Globallast_img read more