Study investigates craters formed by raindrops w Video

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first_img Explore further (PhysOrg.com) — Hiroaki Katsuragi and a team from Kyushu University in Fukuoka, Japan, have been investigating what happens when water drops of various sizes are allowed to fall from a height of 10 to 480 mm onto a granular target consisting of grains of silicon carbide with grain sizes ranging from four to 50 microns. They used a laser system to measure the radius and depth of each crater. They discovered the water drops, all approximately 4.8 mm in diameter, result in cylindrical craters under certain conditions. The results may help scientists interpret possible signs of water on other planets and in fossils, apparently of raindrops on Earth.Katsuragi found that low-speed impacts on small grains did not compress the grains on the surface immediately but created 1.5 mm deep cylindrical craters (dubbed “sink craters”) as the drops slowly compressed the fluffy grains beneath. Craters were much shallower when the grain size was larger.High-speed impacts compressed the grains immediately on impact, and there was no further compression. This produced a convex “bump” higher than the original surface, and this resulted in an inner ring. Katsuragi suggested grains are collected in the initial impact and then as the drop spreads out they are dropped in the center when the water sinks. Medium speed drops made less impact on the surface than either low or high speed drops. Physicists Develop Force Law for Granular Impacts: Sand, Other Granular Matter’s Behavior Is Better Defined © 2010 PhysOrg.com A drop of water hits a bed of grains. (see video below) More information: Hiroaki Katsuragi, Morphology Scaling of Drop Impact onto a Granular Layer, Phys. Rev. Lett. 104, 218001 (2010) DOI:10.1103/PhysRevLett.104.218001 PausePlay% buffered00:0000:00UnmuteMuteDisable captionsEnable captionsSettingsCaptionsDisabledQuality0SpeedNormalCaptionsGo back to previous menuQualityGo back to previous menuSpeedGo back to previous menu0.5×0.75×Normal1.25×1.5×1.75×2×Exit fullscreenEnter fullscreen Play A 4.8-millimeter-diameter drop of water hits a bed of 4-micron-diameter grains after being dropped from a height of 160 millimeters. Video: Hiroaki Katsuragi / Kyushu University (via APS Focus) Katsuragi also derived a mathematical formula to fit the experimental data and hence predict the radius of an impact crater from the density of the granular material used for the target surface. He discovered the crater’s radius is approximately proportional to both the ratio of grain density to water density and to a constant known as the Weber number, which numerically describes the relationship between the inertial force and the surface tension force. Dense grains make the water drops deform more on impact and the result is a larger crater. Drops with a higher Weber number (larger or faster drops) are likely to break apart on impact, reducing the size of the crater.There have been many studies of hard objects hitting soft granular targets, and these have produced craters much like those seen on the moon and other moons in the Solar System, but there have been few studies of the impact of liquid drops on granular surfaces. A number of fossilized depressions believed to be fossils of craters left by raindrops have been found, and the present study may help scientists confirm that the depressions were made by raindrops.The results are published in Physical Review Letters. Citation: Study investigates craters formed by raindrops (w/ Video) (2010, June 1) retrieved 18 August 2019 from https://phys.org/news/2010-06-craters-raindrops-video.html 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

Habitat is designed to provide stay on the moon sleeps two

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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. Choi said the team came up with the idea of a “flexible divider inside the pod that can be moved to cordon off the area where astronauts remove their suits from where they sleep.” The proposed system has the potential to double the reachable distance from the lunar base, increasing the reachable area by a factor of four.Choi in Popular Science summarized the components in their design: It is made up of “an inflatable pod that sleeps two; a reflective shield to prevent the sun’s rays from roasting explorers; life support systems on the rover that will supply oxygen, water and food, maintain the habitat’s temperature, scrub out carbon dioxide, and remove excess humidity; and a flexible roll-out solar array to supply the shelter’s power and recharge the rover’s batteries.”MIT’s Samuel Schreiner, one of the study’s authors, said in Popular Science that the system, when packed, takes up about half as much space as an average refrigerator. Journal information: Acta Astronautica “The system is intended to enable two astronauts, exploring with an unpressurized rover, to remove their spacesuits for an 8-hr rest away from the lunar base and then conduct a second day of surface exploration before returning to base,” they wrote.They noted how lunar surface exploration systems will need to evolve from a system designed for short-term sorties to a system that can support longer durations. That goal is what they have in mind; they presented their conceptual design, they said, in the context of next-generation lunar exploration. The authors said their system will enable two astronauts to conduct a full day of lunar surface exploration, sleep and recover within the inflatable habitat at a location away from the lunar base and then conduct a second day of exploration before returning to the base. More information: An overnight habitat for expanding lunar surface exploration, Acta Astronautica, Volume 112, July–August 2015, Pages 158–170. DOI: 10.1016/j.actaastro.2015.03.012AbstractThis paper presents the conceptual design and analysis of a system intended to increase the range, scientific capability, and safety of manned lunar surface exploration, requiring only a modest increase in capability over the Apollo mission designs. The system is intended to enable two astronauts, exploring with an unpressurized rover, to remove their space suits for an 8-h rest away from the lunar base and then conduct a second day of surface exploration before returning to base. This system is composed of an Environmental Control and Life Support System on the rover, an inflatable habitat, a solar shield and a solar power array. The proposed system doubles the distance reachable from the lunar base, thus increasing the area available for science and exploration by a factor of four. In addition to increasing mission capability, the proposed system also increases fault tolerance with an emergency inflatable structure and additional consumables to mitigate a wide range of suit or rover failures. The mass, volume, and power analyses of each subsystem are integrated to generate a total system mass of 124 kg and a volume of 594 L, both of which can be accommodated on the Apollo Lunar Roving Vehicle with minor improvements. (Phys.org)—People have felt the excitement of seeing their courageous space heroes embark from the Earth to the moon. Those same heroes went up because, beyond completing the journey, they hoped to—in one word— explore. That has been a problem, said Charles Q. Choi in Popular Science, who referred to the limitations in “hang time.” He wrote, “The Apollo program landed a dozen men there from 1969 to 1972, but they spent a total of only three days and six hours actually walking the surface. That’s because they couldn’t stray from their lunar lander and its life support.”Now a team of researchers have devised a way to extend a stay and extend the explorers’ reach beyond the lunar lander. The answer is in packable, inflatable tents. The astronauts could stray from the lunar lander to spend more time on the actual surface of the moon. The team wrote that, “Instead of returning to base, the astronauts would then enter the habitat, doff their suits,and prepare for a second day of lunar exploration (eat,sleep,hygiene,etc.).”Boing Boing said that the researchers designed a pill-shaped inflatable moon tent that sleeps two. The tent fills with oxygen. Their paper, which is available online, details their work, and is titled, “An overnight habitat for expanding lunar surface exploration,” in Acta Astronautica.The authors are from MIT (Department of Aeronautics and Astronautics) and from Brown (Department of Geological Sciences). © 2015 Phys.org A cutaway view of the operational system in its deployed state. The inflatable habitat (1) provides an overnight shelter in which two astronauts can sleep, while the Environmental Control and Life Support System on the rover (2) maintains the habitat internal environment. The thermal shield (3) mitigates solar radiation, and a solar array (4) supplies power. Credit: Acta Astronautica, Volume 112, July–August 2015, Pages 158–170. doi:10.1016/j.actaastro.2015.03.012 Explore further As such, this is more than a sleeping tent; it is a sustaining habitat. As Boing Boing said, it is a system that protects explorers from the sun’s rays and it helps to keep out moon dust from sleeping quarters. Moon dust can be dangerous. Popular Science said it collects on an astronaut’s suit. “The dust is electrostatically charged and sticks to everything, the way a rubbed balloon attracts lint. It is also dangerous, each grain similar to a shard of glass.” Choi in Popular Science said that lunar dust can cause skin and eye irritation and corrosion. When inhaled, it can possibly cause lower-airway issues. Europe’s plans to visit the Moon in 2018 The concept of operations for entering the habitat with inflatable ribs and the flexible membrane airlock. This novel concept allows the internal volume to be used as both an airlock and a habitat. Credit: Acta Astronautica, Volume 112, July–August 2015, Pages 158–170. doi:10.1016/j.actaastro.2015.03.012 Citation: Habitat is designed to provide stay on the moon, sleeps two (2015, June 16) retrieved 18 August 2019 from https://phys.org/news/2015-06-habitat-moon.html The inflatable design with the optimized geometry that minimized mass and packing volume while satisfying minimum human living space requirements. Credit: Acta Astronautica, Volume 112, July–August 2015, Pages 158–170. doi:10.1016/j.actaastro.2015.03.012last_img read more

Mayak the crowd funded Russian satellite nearing launch

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first_img © 2016 Tech Xplore Russian engineers working on the Mayak crowd funded satellite project have announced that the satellite is nearing a launch date—once in space, the team claims that it will be the most visible object in the night sky. The project has been instigated by engineers and others with the University of Mechanical Engineering in Moscow. The team reported that they had collected a million and a half rubles (approximately USD 20,000) via the Boomstarter crowd-funding site which has been added to other donations—together, it has been enough to build and test the satellite.The project has three main goals, the first is to prove that such an effort can work, i.e. that crowd-funding can be used to pay for space research projects. The team wants to show that space exploration is no longer confined to just governments or wealthy groups or individuals—and that going forward, most any group or person with a passion for space exploration can start a project and get it funded. The second goal is for the satellite to do its job, which is to unfurl and use its large swath of reflectors to reflect rays from the sun back to Earth—which will make it the brightest object in the night sky. Mayak was designed and built at UME. The third goal, which requires further funding, is to build an aerodynamic braking system for satellites that can be used to bring them back down to Earth, removing the need to add an engine. As a side project, the team also has plans to build a model of the Mayak satellite to be housed in Moscow’s Museum of Cosmonautics.As with other crowd-funding projects, interested donors were given several options, from donating as little as 300 rubles (USD 5) to 2,500, to 300,000 (USD 4,000). Giving more money meant gaining more access to the project and the people working on it, with the top group receiving an invitation to watch the launch on-site. The team notes that like other satellite projects, users who wish to do so will be able to follow the path of the satellite using a smart phone application. The team has also announced that its partner, the Russian Space launch company, Roscosmos, has confirmed that Mayak may be aboard a Soyuz-2 rocket as early as the middle of this year. Citation: Mayak, the crowd funded Russian satellite nearing launch (2016, March 1) retrieved 18 August 2019 from https://phys.org/news/2016-03-mayak-crowd-funded-russian-satellite.html Explore further Students to build a third space debris observation satellite 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

When inspiration comes from a nightie

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In an attempt to touch the human heart, Spandan, a solo exhibition of  artist Sangeeta Singh attempts to  celebrate thoughts in various forms and shapes. ‘Art for me is a visual statement of the celebration of thoughts in form and content. The objects which has intrigued me in the past have involved simplest of things that we overlook in our daily lives.The sense of human migration that seeps in when you look at rickshaw pullers to the essence of faithfulness in our lives which comes best in the form of a loyal dog or a pet to the sense of freedom that flows from the uninhibited birds. Also Read – ‘Playing Jojo was emotionally exhausting’All these thoughts inspired me to bring them alive with my creations by chanelising them,’ said Sangeeta.The exhibition is a collection of more than 30 ensembles, like oil on canvas, some drawings on paper and an installation. The artist says she mostly uses oil on canvas and also does a few sketches with ink and acrylics.She attributes her art to her mentor Rameshwar Broota under whom she honed her skills.‘My exhibition Spandan is a word in Sanskrit which means heartbeat and my concept is to touch the heart. I have painted different themes ranging from rickshawallas and their shadows, games people play, the hustle bustle of urban life depicted by birds. In one of the paintings I used a pink nightie as a metaphor of femininity,’ added Sangeeta. Also Read – Leslie doing new comedy special with NetflixFor her paintings, she seeks inspiration from everyday life. ‘Inspiration comes in many forms. It is often from the world around or any incident, which triggers my mind or a behavioural pattern which intrigues me. I am a keen observer. When I interact with people I observe their behavior rather than looks. My paintings are more  about feelings of the subject. Form is secondary. I use my instincts and intuition to decide the subjects.Like in the series of bags and birds, the used bag was lying in my room for over a week as I was quite fascinated by its form. One day as I picked it up to dispose it I clicked over two dozen photos of the bag and during the process of studying those pictures I could just relate to it and used them in my works. Showing them with energy bursting in yellow and red colors.The birds moving out of the bag is just a portrayal of the inner chaos and how we are moving in a busy world,’ said Sangeeta.DETAILAt: Visual Arts Gallery, India Habitat Center, Lodhi Road On Till: 1 To 7 October  Timings: 11am To 8 Pm read more

City gallery gives a spin to printmaking

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first_imgWith several shows on printmaking doing the rounds this season, this highly technical process that needs great patience, skill and competence, surely seems to be in vogue. But when some of the most renowned printmakers experiment even within this complex medium by adding drawings on their limited edition prints, the show has to be special.The ongoing show at Art Perspective — Lasting Impressions — is a unique one, where  artists were asked to perform a new experiment with their prints. Director Suruchi Saraf says that she ‘wanted to add an exciting element’ to printmaking. ‘What better than blending this beautiful medium with drawings. While the basic print remains the same for each limited edition, it’s the different drawing that’s done on each of them which makes each print one single edition,’ she says. Also Read – ‘Playing Jojo was emotionally exhausting’And the artists are no less elated at having stretched their imagination. Says Dattatraya Apte: ‘Adding a different drawing on each print created a different setting for the visual narrative. The garden of Garhi has become a part of my daily life and the crows, squirrels, leaves, flowers, stone pathways, earthen bowls with water, curtains, all played their role in building the narrative through these drawings,’ says the artist.Jayanti Rabadia’s work based on ‘sayings’ or Also Read – Leslie doing new comedy special with Netflixkahavatein reiterates their strength through different forms of animals, birds along with human figures. ‘For this portfolio of 10 prints with drawings, I have chosen the Dashavatar from the Indian mythology. Each work speaks of their heroic achievements,’ she says. For KR Subbanna, the same motifs of human and animal form find place on his canvas but ‘drawing fantasized floral motifs on these prints has been a unique experience.’Artist RB Bhaskaran echoes the same sentiment when he says: ‘When it comes to traditional print making and their limited editions, the accepted code is to have a number of limited editions, and then the cancellation of the original plate but when Art Perspective thought of this experimental idea of printing an edition and then also drawing around each of the print, and that too not with identical drawings, it was a challenge for me. It took more time to do the drawing than the printing itself. I have enjoyed this experiment as it is all free hand drawing allowing your imagination to free flowly.’ Shail Choyal says: ‘An episode from Bhagvatpuran where Krishna plays the divine flute and the resonance mesmerises the cows to return home is the basis of my work. The imagery of the cow has been my most favourite motif for the last one decade and I have loved to paint, etch and sculpt the cow in its various moods — and aimed to project a dramatic tension through juxtaposition of the allegorical with the real. Use of landscape through pencil drawings around the flute player is neither religious nor historical but sensuous and other worldly. The drama in the episode here may look absurd and ironic but, I certainly aim to balance the ironic and the absurd with the nostalgia I confront in everyday life.’Siddharth portrays a folktale from Punjab of how practice makes man perfect. The story is that of a man who carries his cow on his shoulders when it was very young and light. Every day he does the same till he could carry the cow even she was older and heavy. The artist says: ‘I made the drawing and the gallery took the initiative to get the etching prints done from a professional printmaker. Later, I started building images around the print with different permutation and combinations. It was a great experience and very experimental exercise.’Go catch this show!last_img read more

A saree affair

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first_imgSo here is your chance ladies! An exhibition by Delhi Craft Council titled Sarees of India – ‘Innovating Tradition’ is on in the Capital.The three-day exhibition brings together weavers from all corners of the country. Weavers from Odisha, West Bengal, Assam and Banaras and other states will be displaying their creations at this event. The exhibition focuses on novel techniques and new ideas re-inventing the traditional weaves and prints.‘This year we will exhibit the work of 20 participants bringing numerous types of sarees. The range of textiles includes chanderi, chikankari, linen, khadi, South Indian weaves, prints, kantha, bandhani, ikat, tussar prints,  laharia and more,’ said Purnima Rai, president, Delhi Crafts Council. Also Read – ‘Playing Jojo was emotionally exhausting’The artistes have brought their specialities and personal touches to their work through interesting textures, bright and bold hues.A hint of modernity with traditional bandhani with unique contemporary designs on tussar silk is what artiste Suleman Khatri plays to display. Pracheen is showcasing the fine art of hand block printing and dyeing in vegetable colours.Delhi Craft Council will also present their annual award ‘Sutrakar Samman’ to Bhanu Murthy- a weaver from Tamil Nadu who specialise in traditional weaving of the region.last_img read more

The essence of her

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first_imgThe Capital is going to see an art exhibition The Opening Show of the Novice where artist Astha Mittal had put her thoughts on the canvas miffed by the state of women in the society. She dedicates the show to all the woman who share a unconditional relationship with the society and its tradition. The artist who is an engineering graduate with an advertising degree finds art very liberating and peaceful and so she translates her thoughts into an expression on canvas.  Also Read – ‘Playing Jojo was emotionally exhausting’Observing her surroundings, Mittal has used her experience to portray the way women are seen in society today. Mittal uses a mix of acrylic and oil on wood of figurative abstracts. She says, ‘Painting is a strong medium and  I have tried learning it on my own over the years. In this particular body of work, I have wished to showcase an essence of ‘her’ which is never spoken of or lost in oblivion because of social customs and practices. It is the woman who is always questioned about her traditions, customs and the so-called societal obligations. Even being an educated, well travelled, exposed to different cultures one is tied down to follow our customary nonsensical traditions, apparently only meant for women.My art depicts that apathy of a woman and how she fights for her freedom of thoughts, beliefs each day’. Mittal who gets inspired by her mother adds, ‘The main inspiration behind this work is my mother who is an epitome of patience, love and perseverance’.last_img read more

Ornaments worth Rs 12L stolen

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first_imgKolkata: Miscreants looted ornaments worth nearly Rs 12 lakh from a jewellery shop in Goyalpara area of Ichhapur in North 24-Parganas on the Monday night.A gang of around 7-8 miscreants entered a shop by breaking open the shutter and looted valuables and hard cash from there. Locals on Tuesday morning found the shutter broken and reported the matter to the local police. The owner of jewellery shop, Abhijit Mukherjee was also informed by the police. When the police entered the jewellery shop, they found everything was ransacked. Also Read – Heavy rain hits traffic, flightsMukherjee who rushed to the spot immediately after being informed, told the police that there were many orders of ornaments, especially ahead of the Bengali new year. The ornaments that have been stolen were kept inside the chest. He informed police that there were valuables worth nearly Rs 12 lakh. The investigation has become a little difficult for the police as the CCTV camera was broken by the miscreants. They also removed the hard disc of the surveillance camera. Also Read – Speeding Jaguar crashes into Merc, 2 B’deshi bystanders killedAccording to preliminary investigation, police suspect that the miscreants had prior information that worthy valuables were there at the shop which were supposed to be delivered to the customers on or before the Bengali New Year. Locals on Tuesday morning raised questions on the security in the area. They also questioned on how the miscreants entered the jewellery shop by breaking open the shutter as it is situated in a middle of a market place.According to preliminary investigation, police suspect that there were 7-8 miscreants in the gang who came in a car. Police have started a detailed probe into the incident. They are interrogating the employees of the jewelley shop in this connection. Raids are being conducted to nab the culprits.last_img read more

Mamata calls for steps to bring down ATC loss below 10 percent

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first_imgKolkata: Chief Minister Mamata Banerjee has called for necessary steps to bring down the Aggregate Technical and Commercial (ATC) loss, that the state Power department incurs, to below 10 percent.The Chief Minister held a review meeting to take stock of the power sector in the state. Sobhandeb Chattopadhyay, the state Power minister, along with senior officials of the department, was present in the meeting.Banerjee has also set up a committee headed by Chief Secretary Malay De. The committee will look into the steps needed to be taken to bring down the ATC loss. It will be holding review meetings every month. At present, the ATC loss stands at 28 percent and the Chief Minister has directed to bring it below 10 percent. Sources said that the Chief Minister had discussed about the issue in details with the state Power minister and the concerned officials in Thursday’s meeting.Sources said it has been clearly stated that it will be the responsibility of the department to make up the loss. The Chief Minister will also be holding review meetings in this connection every two to three months.Soon after getting the direction of the Chief Minister, the officials of the department have started taking necessary steps to check ATC loss.It may be recalled that the state Power department has initiated steps to check power theft, by using aerial bunched (AB) cable for overhead wiring. Hundred places have been identified where AB cable will be used.It will help in checking ATC loss and the quality of power supply will also get improved. Steps have also been taken for underground laying of cables and it has already been implemented in Nabadwip and Bolpur. The same will be carried out in many other cities.Till March, the total number of commercial consumers was 15.93 lakh. It was 8.88 lakh in 2011. The number of consumers for agricultural purpose has increased to 2.86 lakh, which was 1.44 lakh in 2011.The number of industrial consumers was 1 lakh which was 78,074 till March 2011.last_img read more

CMCH writes to guardians to urge students to end strike

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first_imgKolkata: Calcutta Medical College and Hospital (CMCH) authorities on Saturday wrote to the guardians of the agitating medical students who have been staging demonstration inside the hospital campus for past six days with the demand for a new hostel.Few MBBS students of second, third and fourth years started hunger-strike to fulfill their demands. The CMCH authorities appealed to the parents of the medical students to withdraw the movement due to which two students have already fallen ill. The students taking part in the agitation alleged that the hostel meant for them was not in a good condition and the rooms are not up to the mark. The students also submitted a deputation to the CMCH principal on Tuesday placing their various demands. The hospital authorities have categorically mentioned that they will not be able to fulfill the demands. Some of the representatives of the medical students taking part in the agitation held a meeting with the principal of the CMCH and had a prolonged discussion regarding the same. But no solution has come out of it. Senior officials of the CMCH urged the students to lift the agitation which they have turned down. Students threatened to continue the demonstration till the demands are met. There has been no impact on the health services of the hospital. The second, third and fourth year MBBS students of the CMCH started the agitation after the first year students were given a new hostel by the authorities.last_img read more

Politics of violence was never Bengals tradition

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first_imgKolkata: Chief Minister Mamata Banerjee lashed out at Opposition parties in the state for bringing in “outsiders” from other states to create trouble during the formation of boards in Panchayats.Stating that “politics of violence was never the tradition and culture” of Bengal, the Chief Minister maintained that workers of her party are giving their lives to build protest against such acts.It may be recalled that in connection with the violence over formation of boards in Panchayats, the Chief Minister had earlier urged all political parties to maintain peace instead of confrontation to form a board. Also Read – Rain batters Kolkata, cripples normal lifeOn Wednesday while leaving Nabanna, the Chief Minister said: “Mainly those who don’t have confidence on themselves, resort to the politics of violence.”Stating that the violence has claimed many lives, the Chief Minister said: “The politics of murder and terror campaign has come up as a new model. Opposition political parties are bringing people from outside the state to create trouble here. Many of our workers are giving their lives to ensure that politics of violence doesn’t affect the tradition of peace and harmony in the state.” Also Read – Speeding Jaguar crashes into Mercedes car in Kolkata, 2 pedestrians killedIn connection with the incident at Amdanga in North 24-Parganas, in which two Trinamool Congress workers were killed, the Chief Minister maintained that the trouble at the place was planned.While speaking on Monday about the violence over board formation in Panchayats, the Chief Minister had said that some people were brought to the state through the Bihar border on Sunday, to create trouble.In the same breath she had said that outsiders had also been brought in through the bordering areas in Alipurduar and Malda. The state Urban Development and Municipal Affairs minister Firhad Hakim said in this connection: “The Chief Minister had stated on Tuesday that CPI(M)’s harmads have now turned into BJP’s jallads. In Uluberia, the chaos was created without any reason. They are creating trouble on purpose to show that a major problem in going on in the state.””But in most of the places, the process of the formation of Panchayat boards is going on peacefully. Stray incidents are taking place in two-three places and that too is the outcome of the vested interest of some people,” he added.In connection with the Amdanga incident, Hakim said that the police are probing into the incident and law will take its own course.Meanwhile, in connection with appointment of administrator in Chandernagore Municipality, Hakim said: “The municipalitywas not functioning properly to ensure better service tothe common people. Our first aim is to work for the people and neither ego nor vested interest should comein between. Action will be taken if one is found working for his/her vested interests, even if the person is from our party.”last_img read more

IITKGP develops model to predict variability and trends in rainfall pattern of

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first_imgKolkata: Researchers at IIT Kharagpur have developed a new statistical model which can be used to predict variability and trends in rainfall over different climate regions of India. The model, developed by researchers of the Centre for Oceans, Rivers, Atmosphere and Land Sciences (CORAL), takes into consideration both local and remote factors causing weather changes, an IIT-KGP statement said Thursday. Many of these, local and remote, factors that affect weather conditions have been known to the scientific community, the statement said, adding, most weather forecast models typically consider local factors or a single factor that affects rainfall or use of statistical models of correlation to establish the impact of various factors. Also Read – Rain batters Kolkata, cripples normal life Because of this, there used to be significant uncertainties in such predictions as each independent factor has a certain impact, which may not match with actual conditions, it said. “Our study finds that the summer monsoon rainfall variability is governed by the surface temperatures of the Eastern Pacific, Central Pacific, Atlantic and the north Indian Oceans, and equatorial zonal winds,” the statement said quoting Prof Jayanarayanan Kuttippurath. Also Read – Speeding Jaguar crashes into Mercedes car in Kolkata, 2 pedestrians killed However, the winter monsoon rainfall variability is largely controlled by the surface temperature of the North Atlantic and extratropical oceans, Kuttippurath said. “In our model we have used a technique which removes the impact of individual factors to find the trends in rainfall. The model can be used to find the contribution of individual factors to rainfall and can be applied to estimate the trends and variability of rainfall,” Dr Prijitha J Nair, the lead researcher, who conceived and coordinated this study, was quoted as saying in the statement. The model can predict any type of weather conditions, anywhere in the world only by changing the relevant factors affecting the changes, he explained. The model, which has been developed by using data over a period of 38 years, has predicted significant changes in Indian rainfall in the perspective of global climate change. The data analyses conducted during the study revealed significant positive trends (0.43mm/day/dec) in the north-west for summer rainfall during the period 19792017. “There are scientific evidences of major climate shifts over centuries. These do not happen overnight but through gradual changes in weather conditions over time,” Professor Arun Chakraborty, who supervised the research, was quoted as saying in the statement. “The data shows there has been an incremental shift of Indian monsoon from east to west. However, this would require further studies,” Chakraborty said. The novelty of the model has been reported through a research paper ‘The local and global climate forcings induced inhomogeneity of Indian rainfall’ in the much-coveted Scientific Reports by the Nature, the IIT statement said.last_img read more

Domestic Drama

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first_imgThe audience is introduced to a family that is reeling from the death of the patriarch Tatyaji, and Sudhir (Sarfaraz Ali Mirza) now must return to his ancestral home in the village of Dharangaon. His arrival from Bombay, with his wife Anjali (Bhagyashree Tarke) sets up the drama for the rest of the play. The wada (traditional residence) is recreated with a beautiful set, which sprawls across the entire stage and is brought to life with the Deshpande family duking it out on the stage. Also Read – ‘Playing Jojo was emotionally exhausting’ Virasat doesn’t waste time with trivialities and gets straight to setting up the escalating drama. The real hero of the play is Vasant Deo’s masterful translation of Mahesh Elkunchwar’s original script. The script employs slang and faithfully recreates a believable rural dialect. The beautiful writing brings out the pain and helplessness of all those trapped in the wada. Family drama is presented to the audience with a series of escalating scenarios- ranging from a drunken son, to discussing funeral payments- the most compelling of which is the pursuit of a BA by an unmarried Prabha (Pooja Vedvikhyat).  Also Read – Leslie doing new comedy special with NetflixThe rural setting tackles and touches on many themes, including urbanization, greed and even aspiration. Blocking and movement is seamless across the massive haveli and masterful performances by Avijit Solanki and Ajay Khatri escalate the play to unprecedented levels. There are moments of comic relief and the family does appear to be, for most of the part, worthy of redemption with a few heartfelt moments. But Virasat is at heart a powerful drama that doesn’t shy away from asking the right questions. Its characters are a set of bodies pushed and shoved by circumstances. The product makes for a compelling and engaging drama. Virasat is a play produced by first year students of the National School of Drama. The performances had been scheduled from June 2-5 daily at 6.30 pm, with two additional shows on June 4 and June 5 at 3.00 pm, held at Abhimanch Auditorium, National School of Drama.last_img read more

Pleasure of eating makes people choose smaller portions Study

August 31, 2019 0 Comments

first_imgChoosing smaller portions of food does not hamper the enjoyment of eating, finds a study.“In fact, focusing on the pleasure of eating, rather than value for money, health, or hunger, makes people happier to pay more for less food,” said Pierre Chandon, the L’Oréal Chaired Professor of Marketing, Innovation and Creativity at INSEAD Business School for the World, in France.In their article, published in the Journal of Marketing Research, the researchers said the findings showed that people will choose smaller portions of chocolate cake when they are asked to vividly imagine the multisensory pleasure (taste, smell, texture) of similar desserts. Also Read – Add new books to your shelfThe researchers showed that unlike health warnings, this multisensory imagery does not reduce expected eating enjoyment or willingness to pay for the food. They conducted five different experiments where 42 schoolchildren were asked to imagine – incorporating their five senses – the pleasure of eating, familiar desserts and were then asked to choose portions of brownies.They naturally chose portions of brownies that were two sizes smaller than the portions chosen by children in a control condition. Also Read – Over 2 hours screen time daily will make your kids impulsiveIn another experiment, they imitated high-end restaurants by describing a regular chocolate cake as smelling of roasted coffee with aromas of honey and vanilla with an aftertaste of blackberry. This vivid description made 190 participants choose a smaller portion compared to a control condition where the cake was simply described as “chocolate cake”. The study also had a third condition, in which people were told about the calorie and fat content of each cake portion. This nutrition information also led people to choose a smaller portion. However, it reduced the amount that people were willing to pay for the cake compared to the multisensory condition.A third study showed that people underestimated how much they will enjoy eating small portions of chocolate brownies. They expected to enjoy small portions less than larger ones, when actually both were enjoyed equally. This mistake was eliminated by multisensory imagery, which made people better forecasters of their own future eating enjoyment. “Having more descriptive menus or product labels that encourage customers to use their senses can lead to positive outcomes for consumer satisfaction and health, but also for profits. This could make for a more sustainable food industry, which struggles to grow in the face of today’s obesity epidemic,” said Yann Cornil, Assistant Professor at the University of British Columbia, Canada.last_img read more

Five ways to achieve that bridal glow

August 31, 2019 0 Comments

first_imgIt is imperative for brides-to-be to start focusing on their skincare regimen long before the big date starts looming, to look their prettiest. If you are one of them, it is recommended to start paying extra attention to your skin more than six months in advance, say experts. 4Cleanse the skin and get rid of sweat, oil, dirt and other pollutants that your skin naturally collects throughout the day, before retiring to bed. Orange blossom and ginger cleanse the pores of the skin and at the same time maintain the oil balance without making it dry Also Read – Add new books to your shelfAn exfoliator gets rid of dead skin cells, helping restore a radiant complexion. It is essential for a complete exfoliation to remove the signs of dullnessToner tones the skin post cleansing, helping sweep away impurities, leaving pores clean and less noticeableA moisturiser is an essential that should not be skipped for any skin type, especially at night to provide nourishment to the skinTo go a step further, add an equalising mud mask to your regime. It balances the oil around the T-zone area on your face and controls the excess oil in that region whilst hydrating the rest of your face and helping combat dryness in the other regions of your face. Also Read – Over 2 hours screen time daily will make your kids impulsiveBB or CC cream: One doesn’t need to carry a foundation and a SPF separately, when a BB cream solves the purpose of both. It gives a light coverage, like a foundation, that is perfect for a few hours of socialising and also protects the skin from sun damage. Hence, a BB/CC cream is a must.Multi-tasking palette: This is one important item that every girl must have in her beauty bag. These tiny squares are multi-purpose and help solve a number of skin issues. You simply cannot do without this one. Use these as shadow, blush, highlighter or for contouring, and you’re good to go. Eyeliners: Gel, liquid or kohl (pencil) eyeliner, use these to adorn the eyes and give the face a glam look in the snap of a finger. Depending on the skin type, one can include any of these to the makeup kit.While gel eyeliners need too much perfection, for those who are always in a rush, recommend a kohl pencil which is handy and glides swiftly with almost no damage.Mascara: There is no better way to define eyes for a stunning look, than enhancing eye lashes with mascara.Lipstick: Lipstick can totally change the way you look. One can instantly transform the day look to a night look with a change of lipstick. For that bold, crisp and utterly polished look, lipsticks in tones of red, wine, bronze are a must have in the makeup kit.Also never overplay your cheeks. If you want to make a statement, emphasise your eyes or lips, but not both.It is always recommended to add a good primer as pre-make-up prep for the skin which helps to even out the skin and minimise pores helping the foundation to glide smoothly and stay for longerA hydrating mist that helps to restore the moisture of the skin and keep the make-up fresh is a must for such weather.last_img read more

Bengals intellectuals call for Mamata as PM in unison

August 31, 2019 0 Comments

first_imgKolkata: Prominent intellectuals from Bengal stood by Chief Minister and Trinamool Congress supremo Mamata Banerjee in her fight against BJP and Prime Minister Narendra Modi in particular, for dividing people on religious lines and damaging the secular fabric of the country.All the intellectuals who joined a programme at Kolkata Press Club on Tuesday with the slogan of ‘check the communal forces from unleashing a reign of terror in Bengal, an embodiment of communal harmony’, echoed the opinion that Banerjee is the only viable alternative in the country to fight Modi and his fellow BJP leaders, who carry with them a baggage of bigotry and intolerance. Also Read – Rs 13,000 crore investment to provide 2 lakh jobs: MamataThe intellectuals also made it clear that they want to see the Trinamool supremo, who has the capability to ease the tension and fear prevailing among the people across the country, as the Prime Minister. They also strongly objected to BJP president Amit Shah’s remark that Bengalis have been turned to Kangals (beggars). Renowned artist Shuvaprasanna Bhattacharya said: “Saffron is the colour of sacrifice. A political party with a saffron flag is trying to spark communal tension in Bengal. We came across a rally (one attended by Amit Shah) while coming here. Where are these people coming from? They certainly do not look like our fellow citizens. They were shouting objectionable slogans and showing gestures which the people here in Bengal are not familiar with.” Also Read – Lightning kills 8, injures 16 in state”We must prevent the extremism and intolerance triggered by some people in the state. They are coming from outside the state and maligning Bengal. Our Chief Minister had hinted many days ago at the attempts to spread communal tension, which is being witnessed now. These communal forces are targeting Banerjee as they are scared of her. We must build opinions and support her,” he added. Economist Abhirup Sarkar said that the saffron party has been trying to destroy institutions including the Reserve Bank of India, which gives an idea as to which direction our democracy is heading toward. “The institutions which are supposed to keep a vigil on the ‘Chowkidar’, have been destroyed,” said Sarkar. Well-known singer Kabir Suman said that they must lend support to the Chief Minister, who has given a clarion call to oust Modi. “They have seen a revolution in the development works initiated by her. BJP has waged a war and she must win to restore communal harmony,” the singer said. He also said that he would have slapped Shah, had he been present when the former had termed Bengalis as ‘Kangals’.last_img read more

Culture may affect gender difference in risk taking

August 31, 2019 0 Comments

first_imgThe different approaches to risk taking might not be inherent and could be shaped by culture and social environment, according to a study. Previous studies have shown that women are more risk-averse than men, and more likely to opt for a smaller sure thing than an all-or-nothing gamble, but Chinese and American economists found through a new research project that the difference could shift at least in children, Xinhua news agency reported. “If we can teach girls that they should be more risk loving, perhaps that will shape their future decision-making,” said Elaine Liu, Associate Professor of Economics at the University of Houston. Also Read – Add new books to your shelfThe gender norms could have long-term economic consequences, even potentially shrinking the gender pay gap if it led to women choosing riskier but higher-reward career paths, the researchers said. In the study, published in the journal Proceedings of the National Academy of Sciences, the team looked at the behaviour of children from two cultures – the matrilineal Mosuo people and the traditionally patriarchal Han. They attended the same school in China. Also Read – Over 2 hours screen time daily will make your kids impulsiveWhen the children first began their elementary study, Mosuo girls took more risks than Mosuo boys, while Han girls were less likely to take risks than Han boys in keeping with their parents’ cultural norms. But that began to change as the children were exposed to the other culture. The Mosuo girls took more risks than Han girls at the beginning, but their attitude towards taking risk became more similar as they spent more time together, showing a sign of convergence. They studied children’s attitudes through a lottery-style game, offering the students six choices ranging from a guaranteed three-yuan payout to a 50/50 per cent chance of winning 10 yuan or nothing.last_img read more

BSF jawan loses hand in Bangaldeshi smugglers bomb attack in WB

August 31, 2019 0 Comments

first_imgKolkata: A BSF jawan lost his hand and sustained grievous injuries after Bangladeshi cattle smugglers attacked him with bombs in the early hours of Thursday along the India-Bangladesh border in West Bengal, the force said. Constable Anisur Rehman also suffered pellet injuries to his lungs, liver and stomach from the impact of at least two country-made bombs lobbed at him near the Angrail border post in the North 24 Parganas district at about 3:30 am. Also Read – Rs 13,000 crore investment to provide 2 lakh jobs: Mamata In the wake of the incident, the Border Security Force (BSF) issued an alert along the India-Bangladesh border in the south Bengal area as it registered a “strong protest” with their counterparts, the Border Guards Bangaldesh (BGB) to rein in the criminals on their side. The jawan on border duty was attacked by a group of about 25 Bangaldeshi smugglers who entered 200 metres into the Indian side in order to smuggle cattle into their country with the assistance of locals here, the force said. Also Read – Lightning kills 8, injures 16 in state The smugglers were armed with bombs, dahs (cleaver-shaped weapon), axes, bamboo sticks among others, it said. They encircled the jawan and hurled two country-made bombs on him. He was evacuated to the government hospital in Bangaon where his right hand was amputated. “The jawan has suffered grievous injuries and he fired a round from his pump action gun in self defence before he fell unconscious. Reinforcement troops controlled the situation. “The smugglers escaped to the other side as it was pitch dark and the area is marked with heavy vegetation and tall grass growth,” a senior official said. A smuggler is also suspected to have been injured in the firing by the jawan, he said. The BSF has directed all its formations in the south Bengal frontier area “to adopt an aggressive posture against trans-border criminals and thwart their sinister designs. Such incidents of attacks on BSF troops are taking place quite often,” the force said. On Wednesday, the border guarding force had repulsed an attack by about 200 Bangladeshi cattle smugglers and seized 107 buffaloes along the Indo-Bangla border in Murshidabad district of the state.last_img read more

Woman kills husband with help of lover at Nimta

August 31, 2019 0 Comments

first_imgKolkata: A man was murdered by his wife over an extramarital affair on Saturday night. Later, the woman was arrested by the police.According to local residents, on Saturday night, the body of a man identified as Sanjiban Mondal (40), who is a carpenter by profession and resident of Purba Alipur of Nimta, was found inside a bush near his home. His throat was slit and a piece of cloth was entangled on Sanjiban’s neck. Police from Nimta police station recovered the body and sent it for an autopsy examination. Also Read – Rs 13,000 crore investment to provide 2 lakh jobs: MamataOn Saturday night, the police detained Sanjib’s wife Anita Mondal for questioning. During detention, investigators found some ambiguities in her statement. When Anita was asked where was she since the evening she fumbled and stated that she was not at home. Anita claimed that she came back home and found blood inside their house and screamed. Later, local residents found her husband’s body. On the ground of suspension Anita was arrested late on Saturday night. Also Read – Lightning kills 8, injures 16 in stateOn Sunday morning, during another phase of interrogation, Anita admitted that she along with her lover killed Sanjiban. Sources informed that as per her statement, Anita worked as a maid at a house near Belgharia Expressway. She took care of a baby at a home and later developed an illicit relation with the child’s father. However, the police claimed that there could be two more persons who are connected with the murder and one of them may have an illicit relation with Anita. During the interrogation, Anita said as per the plan she had sent her 14-year-old son outside and then gave sedatives Sanjiban. Later, two other people strangled him and slit his throat to confirm the death. After the duo fled, Anita screamed as part of their plan. Police are searching for the duo who were also involved in the murder.last_img read more

How Not to Embarrass Yourself During a Skype Interview Infographic

August 30, 2019 0 Comments

first_img 2 min read May 8, 2014 Rule No. 1 when interviewing (or doing anything professional) on Skype: Wear pants.Thank you, Department of Really Should Go Without Saying.   Just because you’re Skype-ing someone — perhaps even your potential future boss at your dream job — doesn’t mean you that should ditch your britches or lounge in your pajama bottoms. What you should do is take a minute or two to brush up on good Skype interviewing practices with a few reminders from the infographic below by NextGeneration Recruitment, a Dublin, Ireland-based recruiting firm.Related: Can’t Make That Meeting? Skype Could Have the Solution With 3-D Video CallingThe infographic, which is chock full of smart, practical tips for Skype interviewers and interviewees, wisely advises that you only go live for your webcam interview when you’re fully prepared, from having the proper tech in place to curating a professional, properly illuminated background, right down to basics like showing up on time and maintaining virtual eye contact with your cohort throughout your video tête-à-tête. Oh, and of course, don’t forget to smile and often. You’ll seem more approachable.   For more useful Skype tips and tricks — which you could use to benefit any video meeting, not just interviews – check this out:Click to Enlarge+ This hands-on workshop will give you the tools to authentically connect with an increasingly skeptical online audience.center_img Free Workshop | August 28: Get Better Engagement and Build Trust With Customers Now Enroll Now for Freelast_img read more