Monthly Archives: August 2019

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first_img Explore further © 2010 PhysOrg.com More information: Host and viral ecology determine bat rabies seasonality and maintenance, PNAS, Published online before print June 6, 2011, doi: 10.1073/pnas.1010875108AbstractRabies is an acute viral infection that is typically fatal. Most rabies modeling has focused on disease dynamics and control within terrestrial mammals (e.g., raccoons and foxes). As such, rabies in bats has been largely neglected until recently. Because bats have been implicated as natural reservoirs for several emerging zoonotic viruses, including SARS-like corona viruses, henipaviruses, and lyssaviruses, understanding how pathogens are maintained within a population becomes vital. Unfortunately, little is known about maintenance mechanisms for any pathogen in bat populations. We present a mathematical model parameterized with unique data from an extensive study of rabies in a Colorado population of big brown bats (Eptesicus fuscus) to elucidate general maintenance mechanisms. We propose that life history patterns of many species of temperate-zone bats, coupled with sufficiently long incubation periods, allows for rabies virus maintenance. Seasonal variability in bat mortality rates, specifically low mortality during hibernation, allows long-term bat population viability. Within viable bat populations, sufficiently long incubation periods allow enough infected individuals to enter hibernation and survive until the following year, and hence avoid an epizootic fadeout of rabies virus. We hypothesize that the slowing effects of hibernation on metabolic and viral activity maintains infected individuals and their pathogens until susceptibles from the annual birth pulse become infected and continue the cycle. This research provides a context to explore similar host ecology and viral dynamics that may explain seasonal patterns and maintenance of other bat-borne diseases. 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. George conducted a five year field study looking at big brown bats from Colorado. Using data from the study and a mathematical model, the team looked at the incubation period of the virus and the bats hibernation period and determined that three main factors play a role in the survival of the bats. The three factors are a long viral incubation period, the bat’s hibernation, and a large supply of newborn bats in the spring and summer.According to the study, an infected bat will enter into hibernation. This hibernation period slows the body’s metabolism and thus slows the progression of the rabies. This insures that the bat and the virus do not die during this period of time. When spring arrives and hibernation is over, the bats then roost and give birth to their young. This takes place in large colonies, creating a breeding ground for the virus. With numerous bats in one area grooming and nipping at each other, it creates a perfect environment for the virus to spread.When compared to data provided from the Colorado Department of Public Health and Environment and the U.S. Centers for Disease Control and Prevention on rabies peaks and juvenile deaths in the summer, the teams model seems to hold true.The model also shows that if hibernation were to be taken out of the picture, the virus and the bats would go extinct.center_img Citation: Hibernation keeps rabies going in bats (2011, June 7) retrieved 18 August 2019 from https://phys.org/news/2011-06-hibernation-rabies.html (PhysOrg.com) — In a new study published in the Proceedings of the National Academy of Sciences, infectious disease biologist Dylan George from Colorado State University reports that a bat’s hibernation is what keeps the rabies virus alive and does not wipe out the bat before the virus can spread. Study focuses on bats’ hibernation periodslast_img read more

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first_img NVIDIA delivers massive performance boost to Linux gaming Explore further With all the advertising for Xbox and PlayStation game consoles this holiday season, it might be easy to overlook a relative newcomer to the home game console: the Steam Machine, which runs SteamOS, an open source operating system based on Linux.Executives at Valve have been vocal about their disappointment with Microsoft’s (closed) Windows 8 operating system as it pertains to gamers, suggesting that open source is the better way to go. With this latest move, the company appears to be backing up their words—SteamOS can be downloaded (960MBs) for free. What this means is that anyone that wishes to do so, can download the OS and begin writing games for Steam Machines. And that’s not all, Steam Machines won’t be proprietary either—the company has made specs for the console available to anyone that wants them—also free of charge. The idea, the company says, is to get the gaming industry to move away from proprietary systems to those based on open source software.The company does have a word of caution however, SteamOS is still in beta, which means that not only is it a little shaky, but it’s in a form that requires a great deal of knowledge of Linux. That’s going to change, of course, the company says, so those that aren’t quite so hard-core may want to wait till a more mature front end has been developed and released, hopefully sometime next year.In the meantime, those that are more hardcore—the lucky 300—will be installing the OS on their new consoles, testing prewritten code and of course, writing new code, some of it games, some of it most likely code intended to improve SteamOS itself. If all goes well, at some point in the future, a commercial version of Valve’s Steam Machine will go on sale to the public, as will such machine’s by other makers, all running SteamOS. Once that happens, it’s possible non-professionals may begin writing games for the devices, similar to what has happened with apps makers writing for smartphones. And the gaming world will hopefully be better for it. (Phys.org) —Video game maker Valve Corporation has officially made SteamOS available for download for anyone who wishes to do so. At the same time, the company announced that it has also shipped Steam Machines to 300 preselected beta testers. © 2013 Phys.orgcenter_img Citation: Valve releases both Steam Machine and SteamOS (2013, December 16) retrieved 18 August 2019 from https://phys.org/news/2013-12-valve-steam-machine-steamos.html More information: store.steampowered.com/steamos/ 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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first_imgWith new age technology, using the camera to capture everyday life is much simpler. But to move a step backward and use technology to express images in monochrome is what ‘36 Shades of Grey’ attempts. To showcase exquisite images clicked by talented photographers, CAMERAunLIMITED is presenting ‘36 Shades of Grey’ a monochrome photo art exhibition where six talented photographers express through evocative images, their individual perceptions of life as they see it.  Ancient ruins, lesser inhabited lands, daily life along with others that form the earth and beyond, come alive sans colour.  Also Read – ‘Playing Jojo was emotionally exhausting’This is the 9th exhibition in the series of an effort to blend the work of established and upcoming photographers, showcasing talent on a common platform. The photo art exhibition has works of Monidipa Dey, a life-science post-graduate by education, a writer by profession and a photographer by passion. Photographer Niraj Gera, who is displaying his works, is a rare breed of talented photographers who says a story through the frames, he points out, “I loves to travel, to places unknown and untouched and capture their inhabitants, their terrain to present a ‘slice of life’ in my work.”  Also Read – Leslie doing new comedy special with NetflixInspired by nature, light and its effects on emotions, Rashmi Rai crafts the unseen elements through her lens, in what seems to constitute the “real” in our everyday life. “I take inspiration from the 16th and 17th century Dutch and Italian Masters like Willem Claeszoon and Vermeer,” says Rashmi.Ravi Dhingra, Co-Founder CAMERAunLIMITED and curator of the show says, “Our lives are not quite simple as black and white, there are infinite shades of grey. The complexities of tones bring diversity in our views and our thoughts.”last_img read more

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first_imgSwami Vivekananda was a key figure in the introduction of the Indian philosophies of Vedanta and Yoga to the West. He had also been a ‘pakhawaj’ player and is known worldwide for his contribution in the revival of Hinduism. He is an epitome of Indian culture. To further pay regards to this outstanding individual, the President of India, Pranab Mukherjee inaugurated the opening of ‘Vivekanand Auditorium’, housed in the Kathak Kendra, one of the constituent units of the Sangeet Natak Akademi by the push of a button, on Swami Vivekananda’s death anniversary in the national Capital. Also Read – ‘Playing Jojo was emotionally exhausting’The President was received by Dr Mahesh Sharma, Minister of State for Culture, NK Sinha, Secretary Minister of Culture and Shekhar Sen, Chairman of Sangeet Natak Akademi. The President, spoke of how the concept of an auditorium or ‘preksha grihas’ was founded as early as in the ‘Natyashastra’, the Sanskrit text on the various forms of performing arts. He spoke about the extraordinary talent of Swami Vivekananda who was himself an established pakhawaj player and hailed from a family of talented musicians. And thus it was only befitting to dedicate this auditorium in the name of Swamiji.  Also Read – Leslie doing new comedy special with NetflixHe also said that the Akademi has provided a safe haven to artists and practitioners and a vibrant intellectual space to thinkers and scholars.The Welcome address was given by Aruna Sairam, Vice Chairperson of SNA. NK Sinha spoke about the challenges faced in modern times where speed, technology and quick results are expected by everyone. In this situation one has to nurture and provide support to musician and dancers who train for years in the art forms to provide patrons of these art forms with time, patience and rigorous practice besides sheer courage to surrender one’s entire lifetime to its dedicated pursuit. This auditorium was a humble offering in that direction of support born of deep appreciation and respect to the artists. Dr Mahesh Sharma spoke about how in India we trace our heritage back thousands of years and how through the Guru-shishya parampara owing to the unique history of India, layers of evolution were added to these art forms through diverse new innovations, influences and ideologies. No dance form displays this better than Kathak. He also elaborated  about the importance and role that an auditorium plays in the life of an artist. The auditorium which has been built keeping the best acoustics and architectural principles in mind will provide the students of Kathak Kendra and the artist community with a world class auditorium. The function was marked with a short cultural programme. For the inauguration there was Shunk Vadan, Vedic chants and a song of Swami Vivekananda.last_img read more

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first_imgWhen this molecule gets transformed by microbes in the gut, it enables the muscle cells to protect themselves against ageing and also increases the muscle mass.As we age, our cells increasingly struggle to recycle the mitochondria and are no longer able to carry out their vital function and thus gets accumulated in the cell. This degradation affects the health of many tissues, including muscles, which gradually weaken over the years and leads to age-related various diseases. Urolithin A has been found to re-establish the cell’s ability to recycle the components of the defective mitochondria. “It’s the only known molecule that can relaunch the mitochondrial clean-up process, otherwise known as mitophagy,” said Patrick Aebischer, President, Ecole Polytechnique Federale de Lausanne– a research institute in Switzerland.  Also Read – ‘Playing Jojo was emotionally exhausting’“It’s a completely natural substance, and its effect is powerful and measurable,” Aebischer added. For the study, the team tested their hypothesis on the nematode C.elegans – roundworm – which is considered elderly, after just 8-10 days. The lifespan of worms exposed to Urolithin A increased by more than 45 per cent compared with the control group. In the rodent studies, older mice, around two years of age, exposed to Urolithin A showed 42 per cent better endurance while running than equally old mice in the control group. Pomegranate itself doesn’t contain the miracle molecule, but rather its precursor. Depending on the species of animal and the flora present in the gut microbiome, the amount of urolithin A produced can vary.last_img read more

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first_imgAlthough clothing and heels play a crucial role in adding a few inches to your height, jewellery is just as important. If chosen correctly, it can make a short woman look taller and slimmer while the wrong choices can make you look even more petite, say experts. Create an illusion that you’re not the shortest girl in the room, even when you’re wearing flats by choosing the right jewellery.4Choose long and narrow danglers to create an illusion of an elongated neck. Long earrings will not only add those extra inches to your height but will also impart a generous dose of glamour to your looks. Also Read – Add new books to your shelf4Always add those statement pieces that will impart a fairly ‘longer’ look to the entire ensemble. Just make sure you do not add a necklace, ring, earrings, and bangles all at once. If you are wearing a neck piece, go lighter on the ears and so on.4Light-weight and delicate looking pair of earrings in varied geometric shapes like triangles, squares and rectangle can offer a noticeable style statement to short people wherever they go.4Choosing a right ring is also very important for women with petite frame. Opt for rings with slender, narrow-width bands to lengthen the appearance of your fingers. The cut of the gemstone should also be kept in mind. Oval, pear and marquise cut stones give an impression of elongated fingers. Also Read – Over 2 hours screen time daily will make your kids impulsive4Chokers are the hottest trend of the season but one should not go with the flow, rather one should make a wise purchase decision. Since chokers accentuate the strongest features, therefore girls with short height should avoid wearing heavy chokers and bib necklaces as they can compress their overall look. Instead they can opt for a multi-layered necklace or a sleek long chain with bold pendants that suits them the best.4Bracelets or cuffs are one of the most versatile ornaments and can be worn with different outfits to become a signature piece for any occasion. Bold handcuffs can look disproportionate to your height; therefore girls with short height can adorn their wrist by opting for sleek and stylish tennis bracelets.last_img read more

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first_imgKolkata: Two arms rackets were busted on Sunday night at Joynagar in South 24-Parganas and Berhampore. According to sources, police recently came to know about an illegal arms factory functioning somewhere in the Joynagar area. Working on the information, the Special Operations Group (SOG) of Baruipur Police came to know that one Abdul Bari Mondal has been operating the factory at his residence at Batra village in Joynagar.On Sunday night, SOG members and police personnel from Joynagar police station raided the house and Mondal was caught red-handed. During search, sleuths recovered three finished firearms, several bullets and apparatus for manufacturing the firearms. Also Read – Bose & Gandhi: More similar than apart, says Sugata BoseApproximately a month ago, police had nabbed two persons and seized several firearms, along with bullets. It is suspected that Mondal is connected with a big arms dealing racket, which might be operated from Bihar. Seeing this, police have stepped up vigil across the district. Meanwhile, in another incident, SOG of Murshidabad Police recovered 140 rounds of bullet for 9 mm pistols and arrested three persons, including a woman. Sleuths came to know that the bullets were coming from Munger in Bihar and were about to be circulated within the Murshidabad district. It is suspected that a big racket has been operating behind the arms dealing. Sleuths are conducting a probe to trace those who are the prospective buyers of the bullets.last_img read more

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first_imgKolkata: In a bid to make the polling personnel equipped to perform their duties in a proper manner during the seven-phase Lok Sabha elections, two-pronged training programmes would be conducted among all the polling personnel in the state.Apart from training workshops, online trainings may be imparted among them so that they can conduct the elections without any problem. Various training programmes would be conducted among the polling personnel in phases starting from the end of the current month. Also Read – Bose & Gandhi: More similar than apart, says Sugata BoseSenior ECI officials would conduct training among the polling personnel when the latter would be given a detailed outline on how to perform their assigned tasks and to mobilise the election machinery. There may be an online training where the poll personnel would be given various modules containing several questions related to the procedure of conducting elections. If a poll personnel is able to answer the questions of a particular module correctly, then he/she will be able to proceed to the next module. Attempting the question-answer format will help them clear their confusion regarding poll-related issues. There will be a set of master trainers who will train the participants in various batches. Also Read – Rs 13,000 crore investment to provide 2 lakh jobs: MamataThe programme aims at empowering the trainers of all categories with training techniques and methodologies, thereby ensuring better delivery and interactive training programmes. It may be mentioned that a certification programme had already been conducted among the District Election Officers (DEO) and Returning Officers (RO). Leadership and motivational training have already been imparted among important election officers involved in various processes of the elections. Meanwhile, it may be mentioned here that around 10 companies of the Central Forces would arrive in the state within March 15. According to sources in the CEO office, the Central Forces would be deployed in various districts as soon as they arrive. They would also be asked to carry out route marches in various places to boost the confidence of the voters. The Central Forces will be deployed well in advance for area domination, route marches in vulnerable pockets and to carry out other confidence-building measures in the districts, an official said.last_img read more

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first_imgDarjeeling: There is an intelligence alert from Delhi stating that there are chances of suicide attack on monasteries in Bengal during Buddha Purnima to be observed on May 18.With the recent attacks in churches and hotels in Sri Lanka, India too has been keeping a close watch on the situation. On May 10, the Islamic State claimed for the first time that it has established a province in India. Intelligence and security agencies are not willing to buy further claiming that the last militant with ISIS links was gunned down recently in the Kashmir Valley. However, not willing to take a chance the intelligence agencies and security forces have been alerted for Buddha Purnima commemorations.last_img read more

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first_imgKolkata: The body of a 17-year-old missing girl was found inside a dustbin at Apcar Garden area in Asansol on Tuesday.It is alleged that her parents had received a ransom call during the time she went missing. According to sources, on Saturday evening, the girl had told her parents that she was going for her tuition classes. Since then, she had been went missing. Her parents claimed that they somehow came to know that their daughter got down from the bus in the middle before reaching her destination. Since then her mobile phone has remained switched off. Also Read – Rs 13,000 crore investment to provide 2 lakh jobs: MamataAfter a few hours, when she did not come back, her parents got in touch with their relatives and their daughter’s friends but they discovered she had not been to any of them. Later, a missing complaint was lodged at Asansol South police station. While police were trying to locate her, on Monday, the girl’s father received an SMS from her mobile number demanding Rs 15 lakh as ransom. However, when he tried to call on the number he found the phone was switched off. He immediately informed police about the SMS. Also Read – Lightning kills 8, injures 16 in stateThough the police tried to track the mobile number, they failed as the mobile phone was switched off. On Tuesday morning, local residents of Apcar Garden area saw a girl’s body lying inside a dust bin. Police recovered the body and found that it was the girl who went missing. Sources informed that her left wrist was slit. However, a murder case has been initiated and probe is on to nab the accused persons.last_img read more

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