Organic compounds found in protoplanetary disks

first_img More information: Organic Synthesis via Irradiation and Warming of Ice Grains in the Solar Nebula, Science, DOI: 10.1126/science.1217291ABSTRACTComplex organic compounds, including many important to life on Earth, are commonly found in meteoritic and cometary samples, though their origins remain a mystery. We examined whether such molecules could be produced within the solar nebula by tracking the dynamical evolution of ice grains in the nebula and recording the environments they were exposed to. We found that icy grains originating in the outer disk, where temperatures were <30 K, experienced UV irradiation exposures and thermal warming similar to that which has been shown to produce complex organics in laboratory experiments. These results imply that organic compounds are natural byproducts of protoplanetary disk evolution and should be important ingredients in the formation of all planetary systems, including our own. Solar System Shield © 2012 Citation: Organic compounds found in proto-planetary disks (2012, March 30) retrieved 18 August 2019 from Proto-planetary disks, such as that thought to have surrounded our Sun before the planets were formed, are rotating disks of gas and grains of dust, and are believed to be themselves to have been formed from dark molecular clouds. Scientists think the disks are the precursors of the planets and other planetary materials such as comets and asteroids, which form when the icy grains of dust within the disks coalesce together to form larger and larger chunks of rock.Fred Ciesla of the University of Chicago and NASA astrophysicist Scott Sandford used computer modelling to test the hypothesis that organic compounds could be formed within the proto-planetary disk of our solar system, and need not be inherited from the clouds from which the disks formed. The model tracked the movement of thousands of individual ice-covered dust grains over a period of a million years. Most of the particles survived the period studied, and while some were captured by the Sun, many moved to outer areas above the plane of the disk, where they were exposed to high-energy photons of ultraviolet (UV) radiation, and warmer temperatures to evaporate the ice.The computer model showed that conditions on the disks, including the levels of UV radiation, are similar to those in earlier laboratory experiments in which tiny, ice-covered grains of dust were exposed to UV radiation. The experiments showed that molecular bonds of compounds within the dust could be broken and the atoms could recombine to form complex organic molecules.Organic compounds are the building blocks of life on Earth, and include amino acids and the nucleic bases that make up the DNA and RNA molecules.In their paper in the journal Science, Ciesla, a planetary scientist, said the model for the proto-planetary disk in our solar system needed no special conditions, and the findings “fell out naturally,” which means similar findings are also likely in models of proto-planetary disks around other stars, since the dynamics, turbulence, and other features included in the model should be present in all such disks.The processes by which any organic molecules formed on the proto-planetary disk could have ended up on Earth are still unclear, because in the early stages of Earth’s formation it would have been a molten mass in which any organic compounds present would have been destroyed. One theory is that the organic compounds were able to survive intact on comets and asteroids, where temperatures would not have been so high. Organic compounds such as amino acids, the building blocks of proteins, have also been found on meteorites hitting the Earth, which demonstrates that they can survive in space. Journal information: Sciencecenter_img Water’s Early Journey in a Solar System. Image credit: NASA/JPL-Caltech ( — A new study from scientists in the US has reported that organic compounds could be formed in proto-planetary disks, and could have seeded the development of life in our own and other planetary systems. 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. Explore furtherlast_img read more

Satellite proposed to send solar power to Earth

first_img © 2012 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. More information: … nkins_sps_alpha.html Image credit: John Mankins IAA says ‘Yes We Can’ to power plants in orbit Citation: Satellite proposed to send solar power to Earth (2012, April 11) retrieved 18 August 2019 from Mankins idea is a bio-mimetic approach, meaning it’s based on the way something in nature goes about handling a similar situation. In this case, it appears that something is the common flower, which uses its petals to collect solar energy. Mankins idea is to build petals out of an array of many small mirrors that would direct sunlight to solar cells. The energy created by the solar cells would then be converted to microwaves which would be broadcast or beamed back to a receiving station on Earth, where electricity (perhaps as much as tens of thousands of megawatts) would be generated from the energy in the microwaves. To make the project feasible, the mirrors and solar cells would be small and lightweight so that they could be easily transported into space using conventional transport vehicles. And because it would be component based, construction costs would be much lower than other proposed ideas. ( — Artemis Innovation Management Solutions has been given some seed money by NASA to look deeper into a project the company first proposed last summer; namely, building a satellite that could collect energy from the sun and beam it back down to Earth to add to the electrical grid. Building such a satellite has been bantered about for several decades by various groups and scientists, but until now, no one had come up with a design that would work given all the constraints of the time. But now, an idea proposed by longtime NASA engineer John Mankins, now with Artemis, has clearly created enough interest within NASA that some money to investigate the idea is being offered. The project called Solar Power Satellite via Arbitrarily Large PHased Array (SPS-ALPHA) would make use of thin filmed mirrors to reduce weight which would be curved to take maximum advantage of the sunlight it receives. Also, the satellite would sit far enough away from planet Earth so that it would never be in the dark, allowing for a constant stream of microwaves.The initial seed money is to carry out a feasibility and proof of concept study. If NASA likes what it sees, the next step would likely be the construction of a pared down, cheaper version of the project working from a near Earth orbit. If that works out as planned, than the full scale satellite would be built and sent up, perhaps becoming the game changing solution to energy production that so many researchers the world over have been looking for. Explore furtherlast_img read more

Google Glass Specs on specs API docs mark busy week

first_img © 2013 Google Mirror API: Menu Items How It Feels [through Glass] In related news, Google is showing MyGlass, which allows the user to configure and manage the Glass device. “If you don’t have Glass, then downloading this will be a waste of time,” said the note. Google this week also published documentation for the Mirror API. This is the programming interface for developers, to create related Google Glass services. “Today we’re releasing the API documentation and a bunch of example code, so even though the API is in a limited developer preview, you can start dreaming with us,” Google developer programs engineer Jenny Murphy said, in a post this week. Citation: Google Glass: Specs on specs, API docs mark busy week (2013, April 16) retrieved 18 August 2019 from Google Mirror API: Timeline Cards Officially announced for Glass Explorer edition, the spec details presented this week carry the official word about display, camera, storage and battery life. The display is described as a high-resolution display being the equivalent of a 25-inch high definition screen from eight feet away. Google Glass will have a camera that is capable of capturing 5-megapixel images and video at a resolution of 720p. Google Glass owners can expect 12 GB of usable memory, synced with Google cloud storage. As for battery use, typical use will translate into one full day; Google said, however, that features such as Hangouts and video recording will be more battery-intensive. Concerns about wearable comfort are addressed: The device will come with adjustable nosepads, with extra nosepads in two sizes. The Audio is described as Bone Conduction Transducer. Connectivity is Wifi-802.11b/g and Bluetooth. A micro USB cable and charger will be included. Compatibility? Any Bluetooth-capable phone. ( —For those who are just plain curious if not serious about owning Google Glass, the specs are here on Google Glass. 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. More information: … … en& … rs/posts/ … en& Google Mirror API: Contacts The documentation focuses on “Glassware,” including guides for Java and Python. The documentation goes into ample depth for writing “Glassware.” According to the Google developers site, “The Google Mirror API allows you to build web-based services, called Glassware, that interact with Google Glass. It provides this functionality over a cloud-based API and does not require running code on Glass.” The major features are described. Google Glass advocate to developers: Seize the moment (w/ video) Explore further Perhaps the best attention getter in Google’s packet of news announcements rests with the FAQ page. It reveals that Google is seeking to avert complaints and mishaps both. “As you probably know, most states have passed laws limiting the use of mobile devices while driving any motor vehicle, and most states post those rules on their department of motor vehicles websites. Read up and follow the law! Above all, even when you’re following the law, don’t hurt yourself or others by failing to pay attention to the road. The same goes for bicycling: whether or not any laws limit your use of Glass, always be careful.”Google’s advice also extends to those who might think about wearing Google Glass while doing things that are dangerous for their eyes: “Glass can’t protect your eyes from flying debris, balls, sharp objects, or chemical explosions. Using Glass while operating heavy or inherently dangerous equipment, or engaging in physical sports, could distract you, cause Glass to impact your eye, and lead you to harm yourself or others.”In answer to the question, “Is glass useful everywhere,” Google cautions that noisy areas will affect being able to hear Glass and using voice input commands. Bright sunlight will also affect the user’s ability to see the Glass screen. As for privacy concerns, Google said, “Also, you may be in certain places like a doctor’s office where those around you don’t feel comfortable being photographed or captured on video…Above all, be considerate.”last_img read more

Researchers demonstrate proof of creation of a mirror by optical matter

first_img 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. ( —A team of researchers working at the Swiss Federal Institute of Technology has physically demonstrated that it is possible to create a mirror from material that is optically manipulated. In their paper published in Physical Review Letters, the team describes their demo product and how it might one day lead to giant space based telescopes. Credit: T. M. Grzegorczyk et al., Phys. Rev. Lett. (2014) Explore further Currently, space based telescopes are limited by their size and weight, particularly regarding the mirror—using rockets for delivery is very restrictive—there are both size and cost issues involved. To possibly get around that problem, the researchers with this new effort are looking into taking advantage of the force produced when a laser is shot at a tiny particle.Scientists have known for some time that very tiny things can be moved around using nothing but laser light—optical tweezers are one example. Taking the idea a step further, the research team put several micrometer-sized polystyrene beads in water and placed them on a very small pane of glass. Next, they fired a laser at the beads, causing them to move close enough to one another touch—electrostatic force pulled them tightly together. Once in place the beads together formed a reflective surface—reflective enough for the device to be considered a rudimentary mirror. The researchers tested their mirror by shining a light through a plastic ruler—the light that bounced back was displayed on another surface and was clear enough for the team to make out the number “8”. This they say, suggests their simple mirror might one day lead to the construction of huge space based telescopes, effectively doing away with the much heavier models used today.Such predictions may be jumping the gun a bit, however, as there are some very serious impediments to building such a telescope. The main one of course is that such a telescope would require a constantly focused laser beam, which would of course require a lot of power—power that would have to come most likely, from the sun, which would mean sending up massive solar arrays to support the telescope which would bring back the original problem of sending up large or heavy objects.The researchers are undaunted by such hurdles, suggesting that their mirror demonstrates a path towards the future and that it doesn’t seem out of the question to believe that advances in science will make what might now seem impossible, possible © 2014 Phys.orgcenter_img More information: Optical Mirror from Laser-Trapped Mesoscopic Particles, Phys. Rev. Lett. 112, 023902 (2014) DOI: 10.1103/PhysRevLett.112.023902AbstractTrapping of mesoscopic particles by optical forces usually relies on the gradient force, whereby particles are attracted into optical wells formed by landscaping the intensity of an optical field. This is most often achieved by optical Gaussian beams, interference patterns, general phase contrast methods, or other mechanisms. Hence, although the simultaneous trapping of several hundreds of particles can be achieved, these particles remain mostly independent with negligible interaction. Optical matter, however, relies on close packing and binding forces, with fundamentally different electrodynamic properties. In this Letter, we build ensembles of optically bound particles to realize a reflective surface that can be used to image an object or to focus a light beam. To our knowledge, this is the first experimental proof of the creation of a mirror by optical matter, and represents an important step toward the realization of a laser-trapped mirror (LTM) in space. From a theoretical point of view, optically bound close packing requires an exact solver of Maxwell’s equations in order to precisely compute the field scattered by the collection of particles. Such rigorous calculations have been developed and are used here to study the focusing and resolving power of an LTM. Citation: Researchers demonstrate proof of creation of a mirror by optical matter (2014, January 20) retrieved 18 August 2019 from Journal information: Physical Review Letters Laser tripod for better levitationlast_img read more

Rahuls Kalavati should watch out

Payal Pratap went all the way to the Kutch for her Gates of Dawn collection which opened Day One of Wills Lifestyle India Fashion Week. In its essence, it was very gypsy with its swirls, layers and volumes.  She used a lot of geometric embroidery, cross stitch and hand detailing. Models walked the ramp in gathered skirts and corset tops, angrakhas, ghagra pants in tussars, mongas, chanderis, cotton silks, net and cotton voiles. A burst of colours and rustic accessories were some of the highpoints.After Rahul Gandhi’s Kalavati comes Anand Kabra’s Taramati – but on the ramp. In colour schemes of alta red, lime, gold, ivory white, black and royal blue, Kabra highlighted the story of Taramati. Fragmented mosaics and jail patterns on doors and windows featured prominently – giving the story from Deccan a solid base. Kabra stitched the story together using malkha cotton, georgette, chiffon and crepes. read more

Curtains down

first_imgEminent actor Pankaj Kapoor, Environment Minister Prakash Javadekar and theatre director Shekhar Sen were among those who were present at the closing ceremony of the 17th edition of National School of Drama’s annual theatre extravaganza here.With Breaking Borders as this year’s theme, 12 countries participated in the festival, which witnessed 82 plays in 23 languages.The festival came to a close with the play Aadirangam, which was an ensemble of tribal performers. The various performances which were included in the play were Ghantu dance of Sikkim, Sambhalpuri and Shankh Dhwani dances of Odisha and Dappu dance of Andhra Pradesh. Also Read – ‘Playing Jojo was emotionally exhausting’“I am happy that today I am amidst so many theatre artistes. This festival, Bharat Rang Mahotsav, also brings colour and focuses on the new edition of theatre. I am saying all these not as a minister but as a theatre lover,” Javadekar said. He also emphasised that quality should not be compromised to increase the number of plays in the festival every year.“I belong to Maharashtra and there we have a big culture of theatre. Bengal and Gujarat are the other two states where theatre is very prominent. This festival brings out the new developments in the field of theatre. We witnessed around so many plays this year and it’s a great thing. But I feel quality should not be compromised,” he said. Also Read – Leslie doing new comedy special with NetflixPankaj Kapoor reminisced his days in NSD and discussed how the theatre has revolutionised over the period of time. “It always feels great to comeback to home (NSD). When people here were discussing the statistics of plays performed here, I was surprised. When I was in first year, our teacher shared the idea of performing 7-8 shows in Purana Quila,” the Karamchand actor recalled. “During that time, it was a revolutionary thought by him. But we did perform for 24 days with those shows and that’s how the idea of theatre festival began. It’s a matter of honour for all of us,” Kapoor said.last_img read more

HIDCO to conduct bio diversity study of Eco Park

first_imgKolkata: Housing Infrastructure Development Corporation (HIDCO) has decided to conduct a bio diversity study of Eco Park by some expert group, led by the state Forest department. Meanwhile, a photo booklet titled Echoing Green: a five year journey, has been published to celebrate five years of Eco Park. The biggest urban park in the country stands on 480 acres of land, surrounded by 112 acres of waterbody. Eco Park has been renamed as Prakriti Tirtha by Chief Minister Mamata Banerjee. It has become a great tourist attraction and over one crore people have visited the park in the past five years. Also Read – Heavy rain hits traffic, flightsA five acre plot near Banglar Hat has been earmarked, where Pakhibitan will be created as a virgin ecosystem for insects, birds, lizards, reptiles and fish.A preliminary study conducted so far, states that there are many types of butterflies in the Butterfly garden of Eco Park, along with three species of mammals, twenty four species of birds and 17 species of fish present in the urban park. Eco Park serves as the lungs to the people of New Town. There are 23 varieties of bamboo in the Bamboo garden. The other important gardens are Hibiscus garden, Heliconia garden, Japanese Forest garden, Rabi Aranya – the herbal garden having 241 varieties of herbs, the Tropical Rainwater garden, etc. Also Read – Speeding Jaguar crashes into Merc, 2 B’deshi bystanders killedThe gardens are maintained meticulously and despite the presence of so many visitors, not a single tree has been damaged by the people.There is a well maintained Butterfly garden, where some of the important varieties include Blue Mormon, Mormon, Lemon Pancy, Blue Pancy, Grey Pancy, Common Leopard, Common Rose etc. Among the birds are Stock Billed Kingfisher, White bellied Woodpecker, Rock Bush Quail, Green Munia, Malabar Whistling Thrush, etc.Once the report of study of the bio diversity of Eco Park is ready, it will throw light on the condition of the flora and fauna in the urban park.last_img read more

The spiritual self

first_imgIndia International Centre is hosting an exhibition titled Aura — The Mystery by Rajinder Kumar Saini. The show exhibits abstracts in Chinese black ink. “Aura, or the halo claimed as spiritual signature is the mystery behind universe and the life on earth. Perhaps, since the evolution of human life, whether by God or by nature, the meaning of aura had always been illusive, amazing and mysterious,” says Saini.  Also Read – ‘Playing Jojo was emotionally exhausting’The germane of the present exhibition of paintings in Chinese black ink in abstract form is unique in its own way. The seed for the said collection was originated when her mother, then 92 years old, had entered the phase of deep meditation. In order to provide a congenial atmosphere, he started playing spiritual music to reach her inner soul. Consequently, he had to spent more than 500 hours creating  blissful music.  Also Read – Leslie doing new comedy special with NetflixSaini is a self-taught artist with a natural flair that was nurtured under the guidance of his teacher, late G B L Bhatnagar. Being a retired civil servant, he has been working with water colours, painting in small formats, landscapes and is a practitioner of Chinese black ink for over 25 years. He has had a number of exhibitions in India and abroad both as a solo artiste and in group exhibitions.When: On till June 9Where: Art Gallery, IIC Annexelast_img read more

Risky outdoor play good for childrens health Study

first_imgNew research shows that risky outdoor play is not only good for children’s health but also encourages creativity, social skills and resilience. Children who participated in physical activity such as climbing and jumping, rough and tumble play and exploring alone, displayed greater physical and social health, the results showed.”We found that play environment where children could take risks promoted increased play time, social interactions, creativity and resilience,” said author Mariana Brussoni, assistant professor at department of pediatrics at The University of British Columbia. Also Read – ‘Playing Jojo was emotionally exhausting'”These positive results reflect the importance of supporting children’s outdoor play opportunities as means of promoting children’s health and active lifestyles,” Brussoni said. “Playgrounds with natural elements such as trees and plants, changes in height have positive impacts on health, behaviour and social development of children. These spaces give children a chance to learn about risks as well as their own limits.” Safety concerns, such as injury, were seen as the main reason for limiting risky outdoor play. Playground safety standards and too much supervision prevented children from engaging in risky activities.”We recommend considering policy, practice and built environment approaches to risky outdoor play that balance safety with children’s other health outcomes,” Brussoni added. The study appeared in the International Journal of Environmental Research and Public Health. IANSlast_img read more

Bollywood celebrities endorsements row

first_imgOnline shopping is very popular mainly among the Indian youth because of the convenience it offers. In recent times new ways to save money while shopping online has taken the e-shopping trend to a new high. Shopping through deal a day coupon websites have quickly become a very popular option because of the large discounts that they offer. It also helps when a big celebrity name is attached to these sites. Celebrity endorsements though should not act as an authentic proof while shopping online. More often than not many websites use celebrity names without their prior permission in order to plug in their products.  Also Read – ‘Playing Jojo was emotionally exhausting’On closely inspecting the products of one such website it was revealed that the quality and the materials delivered by it were way below par as well as defective. On contacting the customer care of the company through e-mails and phone calls in order to demand refunds, there was no positive response. The company CEO on being contacted said that the complaint had to go through a customer policy, without providing any relevant answers to any queries. Also Read – Leslie doing new comedy special with Netflix On checking the details of the website it was revealed that the website had a lot of celebrity endorsements which after further probe turned out to be a farce. Apparently the photos of these celebrities were taken without their consent. Celebrities Chitrangada Singh and Gauhar Khan, whose photos were used without prior permission, said that they were not associated with any online shopping website. Mandira Bedi said “I am shocked to hear about the incident and I can assure you that I am not associated or ever endorsed any company bearing that name. I don’t know why are they  using my photographs,” while a spokesperson representing Sushmita Sen revealed, “Sushmita Sen was interested in endorsing or launching some online shopping material, but now she is not keen to be associated with any online platform and she has not endorsed  for anyonline company for sure. Other celebrities whose pictures and names that were also used are Vidya Balan, Madhuri Dixit, Deepika Padukone, Kareena Kapoor, Sridevi, Kajol, Shraddha Kapoor Jacqueline Fernandez, Priyanka Chopra, Kangana Ranaut, Aishwarya Rai Bachchan all of whom were unavailable for comments. Advocate Falguni Brahmbhatt said, “The accused website can be booked for cheating and a complaint can be lodged against them for infringement of copyrights and the IT Act.”last_img read more

Youth posing as AGM of SAIL held on fraud charges

first_imgKolkata: Criminal Investigation Department (CID) has arrested one youth from near a five-star hotel on EM Bypass on Saturday on charges of duping many people.The accused, Shyam Maitra, posed himself as the AGM of SAIL on a marketing business web portal and used to ask customers to buy the products of SAIL. He then asked money from the customers on his account through RTGS for the bought product.In the course of investigation, police found that Maitra impersonated himself as Bholanath Biswas, AGM, Marketing, SAIL. Also Read – Rain batters Kolkata, cripples normal lifeA complaint was lodged with the Puducherry police in this regard. It was learnt that M/S Pasupati Engineering of Puducherry had placed an order for 35 MT of steel but the accused informed them that SAIL does not supply less than 100 MT of steel.Eventually, the victim made a payment of Rs 58,32,000 through RTGS. The case was registered in Puducherry on July 26. The complaint was lodged by Prashant Banshal, the owner of the company. After receiving the complaint, Puducherry police approached the CID for assistance to arrest the culprit. The CID accompanied by a team from Puducherry police carried out an investigation. They came to know that Maitra had been staying in a five-star hotel on EM Bypass. As the CID did not have any details about the accused except his mobile number, a team was placed outside Also Read – Speeding Jaguar crashes into Mercedes car in Kolkata, 2 pedestrians killedthe hotel.Finally, the hotel authorities extended their cooperation when he was checking out and he was arrested at around 11.45 am on Saturday. During the interrogation, the accused confessed his guilt. He has been in the business of duping people by various means since 2014, police suspect. The preliminary investigation suggests that the accused, a resident of Sukantapalli in Durgapur, has taken crores of money from various people. Formalities are being done for his transit remand. Ends.last_img read more

Irrigation dept to assess all installations in border areas

first_imgKolkata: The state Irrigation department will carry out an assessment of all its installations situated near the areas bordering the neighbouring states.The move has been undertaken to avoid any further incident similar to what happened at Massanjore near the Bengal-Jharkhand border. There was another incident at the border areas between Bengal and Odisha.Besides carrying out the assessment, the state Irrigation department is also taking necessary administrative steps to avoid recurrence of such incidents at any of its installations near the border areas. Also Read – Rain batters Kolkata, cripples normal lifeState Irrigation minister Soumen Mahapatra said: “We are well aware of all our installations including those in the border areas. Despite being well conversant with the situation at all the places, we are once again assessing the present situation at all the points.”He further said that at the same time, all necessary steps are being taken through the administration to avoid recurrence of such incidents.”We are taking all necessary steps,” said Mahapatra, adding that respective district magistrates are taking necessary administrative steps wherever there are installations in the border areas. Also Read – Speeding Jaguar crashes into Mercedes car in Kolkata, 2 pedestrians killedIt may be recalled that in the beginning of August, the work to paint the hydropower generating Massanjore Dam in blue and white was stopped by some people from Jharkhand and the Biswa Bangla logo on the dam was also replaced with that of Jharkhand.The incident took place despite the fact that the Irrigation and Waterways department of Bengal government carries out the maintenance work of the dam, even though it is in Jharkhand. An FIR was also lodged in this connection. Later, the matter had got resolved following discussions between the district magistrate of Birbhum and her counterpart in Jharkhand.In another incident, a signboard put up by the state government near the Bengal-Odisha border was pulled down by the authorities from Odisha. Now, the state Irrigation department is taking all necessary steps to avoid such incidents in future.last_img read more

GSI becomes nodal agency for collection preservation of meteorites in India

first_imgKolkata: The Geological Survey of India (GSI) has now been declared the Nodal Agency for collection, preservation, registration and dissemination of all Meteorite falls or finds within the country.”We are proud as GSI has become the sole custodian and curator of all meteorites,” said Dr Dinesh Gupta, director general of GSI. All the meteorite falls or finds within the Indian Territory are to be registered in the National Meteorite Repository (NMR) of India at GSI Kolkata, immediately after its collection. The declaration has been made by a recent notification issued by the Ministry of Mines, Government of India. Also Read – Rain batters Kolkata, cripples normal lifeThe collection and systematic cataloguing of meteorites has been in practice in GSI since 1865, when the entire meteorite collection of Professor Robert Philip Greg was purchased by the then Union government. The collection now adds up to nearly 700 meteorite samples, including ordinary and carbonaceous chondrites, achondrites, iron meteorites and stony iron meteorites. Apart from meteorite samples, a few impactites (basaltic melt glass, tektite etc.) and melt breccia from Lonar Crater, Maharashtra and Dhala (Mohar) Crater, Madhya Pradesh, are also curated at GSI Kolkata. Also Read – Speeding Jaguar crashes into Mercedes car in Kolkata, 2 pedestrians killedThese precious extraterrestrial samples are displayed at the National Meteorite Repository at the Meteorite and Planetary Science Division of the GSI office on Kyd Street. Geoscientists of GSI are actively involved in research activities on meteorite, with many renowned institutions like Physical Research Laboratory (PRL) Ahmedabad, Indian Institute of Science (IISc) Bangalore, Atomic Minerals Directorate for Exploration and Research (AMDER) New Delhi, etc. “Meteorites are of significant importance and often hold clues to formation and evolution of stars, provide age and composition of the Solar System and its evolution and often hints at the formation of life,” said Dr Gupta. GSI is coming up with a state-of-the-art laboratory in the Meteorite and Planetary Science Division in Kolkata.last_img read more

Mamata remembers Tapashi Mallick on her death anniversary

first_imgKolkata: Chief Minister Mamata Banerjee on Tuesday remembered Tapashi Mallick, who was raped and then burnt alive by goons allegedly close to CPI(M), during the movement to resist acquisition of farmland in Singur in 2006.On Tapashi’s death anniversary, Banerjee tweeted: “Today is Tapashi Mallick’s death anniversary. She was raped and burnt alive during the farmer movement in 2006. I pay respect to the martyrs who had been killed during the 34 years of Left rule.” Also Read – Rain batters Kolkata, cripples normal lifeThe brutal killing of Mallick had accelerated the farmer movement in Singur, which was organised to oppose acquisition of farmland by the former state government to set up an automobile factory. Intellectuals including poets, scholars and writers got united to support the movement led by Mamata Banerjee and the Singur movement became the Waterloo of Left Front rule in Bengal. Later, the then Chief Minister Buddhadeb Bhattacharjee had confessed in an interview on a vernacular television channel that the decision to acquire farmland to set up the factory was wrong. Also Read – Speeding Jaguar crashes into Mercedes car in Kolkata, 2 pedestrians killedIt may be mentioned that a tomb is coming up in Singur, where the names of all those who had laid down their lives during the farmer movement will be engraved. The incident in Singur has been included in the history syllabus in schools. During the Left Front rule, hundreds of youths had been killed. In Netai, Nanur and Nandigram, helpless villagers were brutally killed by the goons appointed by Left Front, who had unleashed a reign of terror throughout Bengal.last_img read more

Know the secrets of amla juice for diabetes

first_imgDiabetes is a disease of disturbed carbohydrate metabolism where sugar levels in one’s body increase at a much higher rate crossing the normal level. Poor diet and hectic schedule have contributed to diabetes, which in turn, has wrecked havoc to many people’s lives worldwide. As a consequence, the diabetic patients face innumerable restrictions as far as their food habits are concerned. Nature has blessed us with amla, which is a great fruit that can keep you from diabetes miles away. Also Read – Add new books to your shelf Amla is low-sugar and fibre-rich fruit. It stimulates a group of cells that secrete the hormone insulin, thereby reducing the blood sugar level in diabetic patients. The fruit helps in proper absorption of insulin which simultaneously reduces the level of high sugar level among the diabetics. Researchers and clinical dieticians demonstrate that amla is endowed with chromium, which has therapeutic value for the diabetic patients. Chromium promotes the effect of Beta-Blockers needed for improving cardiovascular health and reducing the LDL cholesterol content in the body. The presence of antioxidants Polyphenol that helps in regulating and maintaining glucose level in the blood. One of the ways to control diabetes is to drink amla juice mixed with turmeric twice a day. Its consumption along with other diabetic medicine will not be harmful.last_img read more

Submit report in a week on pending cases over clearance of postretirement

first_imgKolkata: Expressing his displeasure over a number of pending cases in legal forums particularly related to clearing of dues of teaching and non-teaching staff post-retirement, state Education minister Partha Chatterjee on Tuesday sought report within seven days from the district inspectors of schools.The minister chaired a review meeting with officials related to school education across the state and gave instructions that immediate steps should be taken to clear pending dues of retired teachers and non-teaching staff thereby, putting an end to litigations. It may be mentioned that most of the cases pending in legal forums are related to delay in payment of pension and gratuity of teachers. Also Read – Speeding Jaguar crashes into Mercedes car in Kolkata, 2 pedestrians killedA senior official of the school education department who was present in the meeting said the minister was also critical about the lack of vigil on the part of school inspectors in a number of districts in the state. He also pulled up some of the officials concerned for their negligence in keeping a track of the activities in schools. “Some of the District Inspectors claimed that they had visited 70 to 80 percent of schools in their respective districts but the minister furnished documents of the school education department that revealed that they had not covered more than 50 percent of them,” an official said. Also Read – Bose & Gandhi: More similar than apart, says Sugata Bose”We want to have a clear idea of the student-teacher ratio and other infrastructural facilities of various schools in the state and for this, field visit is necessary. You cannot prepare a report sitting in your own office. I have made it clear that strong action will be taken against negligence in such work,” Chatterjee said. It may be mentioned that the department for the last few months has been pressing for rationalising the student-teacher ratio in the schools across the state. “There are more teachers in schools where there are less students and vice versa. This cannot go on,” an official pointed out. He also made it clear that no English medium schools can be opened without the nod of the Education department. It may be mentioned that a handful of schools in Alipurduar had started English medium without having the minimum of infrastructure which attracted the ire of the minister.last_img read more

Patient falls off bed dies kin allege medical negligence

first_imgKolkata: A woman died after she fell off the bed at the newly built super-specialty hospital in Bongaon on Wednesday night.The family members of the patient have brought the charges of negligence against the hospital authorities and demanded a probe into the incident. Munmun Mondal (43), a resident of Chalki village at Gopalnagar in Bongoan was admitted to the hospital by her family members on April 23 as she complained of severe respiratory distress. Also Read – Rs 13,000 crore investment to provide 2 lakh jobs: MamataAfter a preliminary check up the patient was admitted to the female medicine ward of the hospital. The patient was recovering well as observed by the hospital doctors. The family members of the victim spoke to the attending doctor in the night of April 24 who told them that patient may be released from the hospital in one or two days. The incident triggered tension among the patients at the female ward of the hospital on Thursday morning. The victim’s family members said that they received a phone call from the hospital saying the patient died. The family members then rushed to the hospital and came to know that the patient fell on the floor from the bed and this led to her death. It is suspected that she suffered internal injuries after falling from the bed. The real cause of her death is yet to be ascertained. The hospital staff members however denied the allegation of negligence. They termed it as an accident. The family members met the hospital authorities and urged them to conduct a probe into the death. They also alleged that the patient died due to negligence by a section of the hospital staff members. The hospital officials assured the deceased’s family members that a probe would be conducted into the incident.last_img read more

Climate change affecting global food production

first_imgClimate change is adversely affecting the production of key crops such as wheat and rice, with some countries faring far worse than others, according to researchers including those of Indian origin. The world’s top 10 crops – barley, cassava, maize, oil palm, rapeseed, rice, sorghum, soybean, sugarcane and wheat – supply a combined 83 per cent of all calories produced on cropland. Yields have long been projected to decrease in future climate conditions. Also Read – Add new books to your shelfThe research shows that climate change has already affected production of these key energy sources. Scientists used weather and reported crop data to evaluate the potential impact of observed climate change. They found that observed climate change causes a significant yield variation in the world’s top 10 crops, ranging from a decrease of 13.4 per cent for oil palm to an increase of 3.5 per cent for soybean, and resulting in an average reduction of about one per cent of consumable food calories from these top 10 crops. Also Read – Over 2 hours screen time daily will make your kids impulsive”There are winners and losers, and some countries that are already food insecure fare worse,” said the reearchers. “These findings indicate which geographical areas and crops are most at risk, making them relevant to those working to achieve the UN Sustainable Development Goals of ending hunger and limiting the effects of climate change. Insights like these lead to new questions and crucial next steps,” they added. The impacts of climate change on global food production are mostly negative in Europe, Southern Africa, and Australia, generally positive in Latin America, and mixed in Asia and Northern and Central America. About half of all food-insecure countries are experiencing decreases in crop production – and so are some affluent industrialised countries in Western Europe, the study found.last_img read more

New Study on the Origin of Gold has Astronomers Excited

first_imgIn recent years scientists have concluded that the origin of gold was the product of an ancient, explosive cosmic event. If you wear a gold ring, there’s a good chance that what you see when it gleams on your finger comes courtesy of a cosmic explosion that happened about 4.6 billion years ago. That’s what two astrophysicists said in a new paper published in Nature in May 2019, which supports the theory that a binary neutron star merger brought to Earth elements such as gold and platinum. While the relatively rare element has been cherished by mankind since at least the 2nd century BC in fragmentary records, the origin of gold was a mystery until the 21st century.Gold has been cherished by mankind since at least the 2nd century BCAstrophysicists Szabolcs Marka at Columbia University and Imre Bartos at the University of Florida said in their study that the collision produced 0.3 percent of Earth’s heaviest metals — including gold, platinum, and uranium.Two gold bracelets from the Hoxne Hoard, in the British Museum. Photo by Fæ CC BY-SA 3.0“This means that in each of us we would find an eyelash worth of these elements, mostly in the form of iodine, which is essential to life,” Bartos said in a statement released to the media. “A wedding ring, which expresses a deep human connection, is also a connection to our cosmic past predating humanity and the formation of Earth itself, with about 10 milligrams of it likely having formed 4.6 billion years ago.”Related Video:This collision is thought to have happened about 100 million years before the Earth was formed, seeding the solar system with the elements.“All the atoms in your wedding band, in the pharaoh’s treasures and the bombs that destroyed Hiroshima and still threaten us all, so the story goes, have been formed in cosmic gong shows that reverberated across the heavens,” according to the New York Times.Neutron Star Merger. Photo by NASA“It’s the greatest fireworks show in the universe,” David Reitze of the California Institute of Technology and the executive director of the Laser Interferometer Gravitational-Wave Observatory, or LIGO, told the Times.It was an explosion in 2017 that led many astrophysicists to support this conclusion. On the morning of August 17th, “a ripple in space passed through our planet,” said EarthSky. “It was detected by the LIGO and Virgo gravitational wave detectors. This cosmic disturbance came from a pair of city-sized neutron stars colliding at one third the speed of light.”Astronomers around the world seized their telescopes in response. What they saw less than 24 hours later was the birth of a brand new star, a kilonova, in a galaxy called NGC 4993, which is some 130 million light years away from Earth.“On August 17, 2017, the Laser Interferometer Gravitational-wave Observatory detected gravitational waves from a neutron star collision. Within 12 hours, observatories had identified the source of the event within the galaxy NGC 4993, shown in this Hubble Space Telescope image, and located an associated stellar flare called a kilonova (box). Inset: Hubble observed the kilonova fade over the course of six days.”They also spotted a golden glow. “The spectrum of the kilonova contained the fingerprints of the heaviest elements in the universe,” said Earth Sky. “Its light carried the telltale signature of the neutron-star material decaying into platinum, gold and other so-called ‘r-process elements.’ ”When studying the fireball, astronomers came to the conclusion that it created a cloud of gold dust that was many times more massive than the Earth.In their work, Bartos and Marka compared the composition of meteorites to simulations of the Milky Way. They found that a single collision could have occurred about 100 million years before the formation of Earth, some 1,000 light years from the gas cloud that formed our Solar System.Read another story from us: Universe’s First Ever Molecule Observed in Space for the First Time“Our results address a fundamental quest of humanity: Where did we come from and where are we going?” Marka said. No doubt the origin of gold has played a huge factor in the ensuing history of humanity.last_img read more

Indians clinch first World Series berth since 1997 The golden year of

first_img Advertisement In Game 5, the Indians jumped on the board in the first inning, when Mike Napoli drove in a run with a double and largely quieted the Toronto crowd before they could become a factor. Carlos Santana and Coco Crisp added solo shots, which proved to be all the scoring the Indians needed.Cleveland rookie pitcher Ryan Merritt, who had only one previous major league start, shut down the Blue Jays through 4 1/3 innings, when Tito Francona handed the ball to the bullpen and Andrew Miller to slam the door on Toronto’s season.While the Cubs and the Dodgers have garnered most of the attention in the MLB postseason, the Indians have easily been the most dominate team, dispatching the Red Sox and Blue Jays, while only losing one game during their playoff run.The Indians will welcome the NLCS winner to Cleveland for Game 1 of the World Series, a city currently drunk with winning professional sports franchises, and delicious beer. Game highlights from last night’s ALCS clinching Cleveland win.center_img The Cleveland Indians punched their ticket to the World Series for the first time since 1997, after smothering the Blue Jays 3-0 in Game 5 of the ALCS, and clinching the series 4-1. Cleveland’s last World Series title came in 1948, when Bob Feller and Lou Boudreau were leading the team, and you could buy a house for about the cost of a Macbook Pro.The Indians will host Game 1 of the World Series on October 25, the same night that the Cavaliers open their season and receive their championship rings. Times they are a changin on the banks of the mighty Cuyahoga.Cleveland middle reliever Andrew Miller, also known as the human incarnation of Satan for Playoff opponents and Toronto Blue Jays fans, was named ALCS MVP.In the series, the versatile 6’7” lefty buzzsaw, acquired from the Yankees before the trade deadline, pitched 7 2/3 innings of scoreless relief with an inhuman 14 strikeouts. So far in the playoffs, Miller has been a one man middle relief bridge to the 9th inning, and the place where middle inning rallies go to die. In an era of specialized relievers, Miller is a throwback, capable of grabbing the pill and cruising through two or more innings. He’s Mariano Rivera disguised as Paul Bunyan.last_img read more