Monthly Archives: August 2019

Immaterial display allows viewers to handle 3D images in air

first_img Computer scientists Cha Lee, Stephen DiVerdi, and Tobias Höllerer from the University of California Santa Barbara have designed their depth-fused 3D (DFD) display, which uses up to two FogScreens and projectors, along with a user-tracking system, to achieve a 3D effect. The results of their experiments will be published in an upcoming issue of IEEE Transactions on Visualization and Computer Graphics. Image of a 3D teapot, displayed using two perpendicular FogScreens. Credit: Cha Lee, et al. ©2008 IEEE. NIST’s compact atomic gyroscope displays new twists ( — In the future of immersive entertainment, people may not only walk through floating 3D images, but also manipulate the images in thin air. Taking a step toward this reality, researchers have built a prototype of a room-sized 3D immaterial display, demonstrating the possibility of using the technology for a variety of entertainment purposes. Image of a 3D rabbit, displayed using one FogScreen and a wall. Credit: Cha Lee, et al. ©2008 IEEE. Explore furthercenter_img Citation: Immaterial display allows viewers to handle 3D images in air (2008, August 28) retrieved 18 August 2019 from In their experiments, the UCSB researchers compared three different FogScreen set-ups to determine which gave the clearest images: two screens parallel to each other (2 meters apart), two screens perpendicular to each other, and one screen parallel to a wall (4 meters apart).In user studies, participants confirmed that they could see the 3D effect in all three set-ups, after the researchers optimized the configurations and room conditions. The single-screen set-up had some advantages over the others, such as having less turbulence and, from a practical perspective, being simpler and cheaper. Still, the researchers noted there was room for improvement, especially in terms of alignment errors, fog turbulence, and tracking errors. “For true realism, a 3D object should appear exactly where it is expected regardless of what the user is actually doing,” said Lee. “Factors like occlusion, projection bleed-through, projector-camera calibration errors, and dynamic scenes make this an extremely challenging issue. Coupling this with errors introduced by even the best tracking solutions on the market, and an expert user will begin to notice the slight errors in imagery and user-to-scene registration. For our research we used the best available immaterial display, the FogScreen, but display improvements would definitely improve the fidelity of images and interaction.” Despite the challenges, the demonstration takes a significant step toward a room-sized 3D display that users can view from any angle, and – with improved tracking accuracy and fog control – reach in and manipulate the images.“A room-sized 3D immaterial display would be in many ways the ideal display,” Lee said. “A virtual tour of a museum, an all-in-one entertainment display, and a virtual office or living room are all possible applications. A future application could be something like virtual surgery (e.g. on a large 3D heart) or a telepresence type of application in live environments (e.g. 3D surveillance).”More information: Lee, Cha; DiVerdi, Stephen; and Höllerer, Tobias. “Depth-Fused 3D Imagery on an Immaterial Display.” IEEE Transactions on Visualization and Computer Graphics. To be published.Copyright 2008 All rights reserved. This material may not be published, broadcast, rewritten or redistributed in whole or part without the express written permission of In recent years, 2D FogScreens have gained popularity at entertainment venues. Desktop-sized and handheld DFD displays also exist, although users are restricted to a single viewpoint. In a room-size DFD display, users could stand anywhere, and wouldn’t need to wear 3D glasses, to view 3D images. “The biggest advantage to DFD rendering lies in the fact that observers do not have to wear encumbering glasses to view the 3D scene,” Lee told “Although traditional auto-stereo displays and volumetric displays also exhibit this quality, their inherent technology limits their usability. Autostereo displays allow for a limited number of views, and volumetric displays are usually enclosed within some space which users cannot or should not interact with. DFD displays allow for many views and interaction as long as a user is reliably tracked.”DFD displays contain one or more FogScreens that project a thin sheet of fog, while light is projected onto the fog from behind. The fog scatters the light to create an image that literally floats in thin air. To achieve the 3D effect, the same image is rendered on two overlapping screens at different depths. Users’ head positions are tracked since the 2D images on each screen depend on the user’s viewing direction. The system computes the image alignment in real time, and users see a single, fused 3D image where the screens overlap.But a room-sized DFD still presents technical challenges for researchers. For instance, the fog from two FogScreens can bleed through and disrupt each other, air conditioners and open doors can cause turbulence that interferes with the image quality, and alignment and tracking errors can occur because people view the 3D images with two separate eyes. This document is subject to copyright. Apart from any fair dealing for the purpose of private study or research, no part may be reproduced without the written permission. The content is provided for information purposes only.last_img read more

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Bacteria can grow under extreme gravity study

first_imgPhotograph of pellet of E. coli cells formed after incubation at 403,367 × g and 37 °C for 60 h. The outer diameter of the tube is 18 mm. Image (c) PNAS, doi: 10.1073/pnas.1018027108 © 2010 ( — A new study in the Proceedings of the National Academy of Sciences shows that bacteria is capable of growing under gravity more than 400,000 times that of Earth and gives evidence that the theory of panspermia could be possible. Resistant gut bacteria will not go away by themselves Explore further More information: Microbial growth at hyperaccelerations up to 403,627 × g, PNAS, Published online before print April 25, 2011, doi:10.1073/pnas.1018027108AbstractIt is well known that prokaryotic life can withstand extremes of temperature, pH, pressure, and radiation. Little is known about the proliferation of prokaryotic life under conditions of hyperacceleration attributable to extreme gravity, however. We found that living organisms can be surprisingly proliferative during hyperacceleration. In tests reported here, a variety of microorganisms, including Gram-negative Escherichia coli, Paracoccus denitrificans, and Shewanella amazonensis; Gram-positive Lactobacillus delbrueckii; and eukaryotic Saccharomyces cerevisiae, were cultured while being subjected to hyperaccelerative conditions. We observed and quantified robust cellular growth in these cultures across a wide range of hyperacceleration values. Most notably, the organisms P. denitrificans and E. coli were able to proliferate even at 403,627 × g. Analysis shows that the small size of prokaryotic cells is essential for their proliferation under conditions of hyperacceleration. Our results indicate that microorganisms cannot only survive during hyperacceleration but can display such robust proliferative behavior that the habitability of extraterrestrial environments must not be limited by gravity. Biologist Shigeru Deguchi of the Japan Agency for Marine-Earth Science and Technology led the research. With his team, he set out to test the growth capability of bacteria under intense gravity conditions. With the use of a machine called an ultracentrifuge, they spun four different species of bacteria in a way to replicate hyper-gravity.While the bacteria clumped together in pellet form when the gravity increased, their growth rate was not affected. Two of the species, Paracoccus dentrificans (soil bacteria) and Escherichia coli were able to continue growth within a gravity rate of 403,627 g. Researchers believe that the reason the microbes are not affected is due to their size and structure. The smaller an organism is the less sensitive it is to gravitational forces. Bacteria, a prokaryotic cell, do not have organelles. Organelles, such as cell nuclei, tend to compact and are subject to sedimentation effect and shutting down. Bacteria, by contrast, do not suffer with this problem. Researchers are still unclear as to why some bacteria are more resistant than others and say further study is needed.The theory of panspermia believes that life on Earth could have begun when comets or asteroids carrying microbes collided with Earth. While there is no proof that microbes here are descendants from alien life, it is now a possible theory. This research however does allow for expansion into areas where we previously thought life would not be possible. For example, the gravity on a brown dwarf has been estimated at around 10 to 100 g. While it wasn’t believed that life could grow under those conditions, this study shows that is not the case. Citation: Bacteria can grow under extreme gravity: study (2011, April 26) retrieved 18 August 2019 from This document is subject to copyright. Apart from any fair dealing for the purpose of private study or research, no part may be reproduced without the written permission. The content is provided for information purposes only.last_img read more

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Sony Playstation Network begins restoration of their online network wvideo

first_img Sony PlayStation network users face password change Citation: Sony Playstation Network begins restoration of their online network (w/video) (2011, May 15) retrieved 18 August 2019 from ( — Sony’s PSN has been offline since April 21 when a security breach was discovered. As a result 77 million customer records were lost and an additional 24 million accounts were compromised. © 2010 Sony’s PlayStation Network is back online in the US, Canada, and Europe. Users are required to change their password to regain access. Explore further Sony has also offered their customers additional protection by enrolling them, free of charge, in identify protection programs in countries were programs such as cyber monitoring or insurance is available.Sony pledges the only way to protect against cybercrime is to upgrade their systems to minimize the vulnerabilities against cyber attacks. Sony also stated that they will monitor their systems aggressively so that they can take quicker action if another attack should every happen again. Sony now plans to make consumer protection, of their personal data, a full-time job. Sony has restored their PSN for customers in the United States, Canada and Europe. Customers will be required to update their PS3’s firmware to v3.61 as well as change their password.According to Sony the following services have been restored:• Sign-in for PlayStation Network and Qriocity services, including the resetting of passwords• Playstation Home• Music Unlimited powered by Qriocity, for current subscribers, on PS3 and PC• Access to 3rd party services such as Netflix, Hulu, Vudu and• Restoration of online game-play across PS3 and PSP• Playback rental video content, if within rental period, of PlayStation Network Video Delivery Service on PS3, PSP and MediaGo• ‘Friends’ category on PS3, including Friends List, Chat Functionality, Trophy Comparison, etcIn the video below, Sony Executive Deputy President Kazuo Hirai, apologizes for the long outage. Because the network attacks were very sophisticated, Sony needed more time to test and install the new security measures across their entire system. This document is subject to copyright. Apart from any fair dealing for the purpose of private study or research, no part may be reproduced without the written permission. The content is provided for information purposes only.last_img read more

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Walney offshore wind farm is worlds biggest for now

first_img Germany’s first offshore wind farm begins turning © 2011 ( — The Walney wind farm on the Irish Sea–characterized by high tides, waves and windy weather–officially opened this week. The farm is treated in the press as a very big deal as the Walney farm is presently the biggest offshore wind farm in the world. According to DONG Energy, which is part of the venture responsible for the Walney farm, the project is approximately 15km from the coastline of Walney Island in a north west to south-easterly direction. 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. The farm has 102 turbines and a capacity of 367 megawatts, said to be enough power for 320,000 homes. The joint venture behind the Walney wind farm involves the Denmark-based DONG Energy, which is a leading energy group in northern Europe, and several other companies. The breakdown is DONG Energy (50.1%), SSE (25.1%) and OPW ( 24.8%). According to reports, DONG Energy has around 30 per cent of the offshore wind market throughout Europe.Ed Davey, Energy and Climate Change Secretary, has voiced enthusiastic support of the offshore wind farm. Britain, with more than 1,500 megawatts of offshore wind, intends to see a capacity boost to 18,000 megawatts by 2020. Over the near term, Davey predicted that 2012 through 2014 will be all about the “industrialization” of offshore wind.DONG likewise attaches importance to the UK push; the company notes that the scale of the offshore wind farms envisioned by the UK is larger than in any other country in the world. Following the Walney opening, another big event scheduled is the London Array off the coast of Kent, to debut by the end of the year. Observers say it will dwarf the Walney farm, to become the world’s largest offshore wind farm, powering 750,000 homes. The first phase will power two-thirds of all the homes in Kent.Government enthusiasm over offshore wind farms is countered, however, by skeptics who remain unconvinced that offshore wind farms are a good energy solution and by those who are opposed to wind farms period. (In the UK, energy watchers underwhelmed by wind power contend that wind power does little or nothing to offset CO2, and isn’t economically viable without subsidies. Moreover, British economist Ruth Lea has said that when all costs are included, gas-fired power is the most cost-efficient method of generating electricity in the short-term, while nuclear power stations become the most cost-efficient in the medium-term.) According to findings from the Bloomberg New Energy Finance group, installing turbines offshore costs about 3.3 million pounds a megawatt, higher than the cost to build a turbine onshore, estimated at 1.25 million pounds a megawatt.Davey, however, is optimistic. He has maintained that even though offshore wind turbines are presently a high-cost form of energy, with adequate support the cost can come down; he said that, over the longer term, offshore wind will provide a low-cost form of energy if compared to fossil fuels. He said another benefit to offshore wind farms is that they will provide jobs and perhaps even an export market for the UK.According to Reuters, offshore wind farms will receive UK government subsidies until 2015, which will subsequently be reduced by 5 percent. Onshore wind farms, which are less costly to build, will see subsidies cut gradually by 10 percent.center_img Citation: Walney offshore wind farm is world’s biggest (for now) (2012, February 11) retrieved 18 August 2019 from More information: … out_the_project.aspx Explore furtherlast_img read more

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Study confirms highways are bad news for several bat species

first_img Bats bounce back in Europe Citation: Study confirms highways are bad news for several bat species (2014, May 16) retrieved 18 August 2019 from Other research has confirmed that one of the biggest human impacts on the environment is road construction. Apart from the initial habitat destruction caused by clearing areas to build highways, roads tend to break up the environment into fragments, which means wildlife cannot migrate freely. This stops the flow of genes across landscapes, which reduces the genetic health of wildlife. Many papers have documented the effect of traffic on wildlife behaviour and abundance. For example it was found the grey shrike-thrush sang at a higher frequency, if there was a lot of traffic noise, than other bird species such as the grey fantail. And that the number of both species declined substantially with increasing traffic noise and traffic volume. It has also been shown that some species of rainforest frogs are less abundant near large, busy roads. But there has been less research into the effects that large roads have on bat populations. Dr Justin Kitzes and his colleagues at the University of California, Berkley, set out to investigate how roads impacted the activity of several bat species native to the area in question—these were the Brazilian free-tailed bat, big brown bat, hoary bat and silver-haired bat. Kitzes and his team concentrated on three major highways in California. The researchers set up an acoustic recording system for each highway. Microphones were set up on one metre poles along a transect perpendicular to the highway to record the calls of bats which happened to fly by them. These microphones were placed at 20, 100 and 300 metres from the edge of the road. The habitat varied between transects. For example, some transects consisted of bare sand and open water, whereas others consisted of marshland with intermittent trees. ( —Large roads and highways have been shown to reduce the numbers of many species that live near them. Previously, this effect has been mostly studied in birds. But a recent research paper, published in the science journal PLOS ONE, has shown that close proximity to highways reduces the activity of four bat species native to California. Model predictions of nightly bat passes by species and distance from road. Three values are displayed for each species, representing the predicted activity for that species at 0 m, 100 m and 300 m from the road. All models show an approximate doubling of bat activity at 300 m as compared to 0 m with the exception of L. noctivagans, which shows a tripling. Credit: PLoS ONE, doi:10.1371/journal.pone.0096341.g001 More information: Kitzes J, Merenlender A (2014) Large Roads Reduce Bat Activity across Multiple Species. PLoS ONE 9(5): e96341. DOI: 10.1371/journal.pone.0096341 The recordings were taken between sunset and sunrise over the course of about a month in the autumn of 2011. Every time a bat flew past a microphone, its call was automatically recorded. Different species of bat were later distinguished by playing back the recordings and identifying their specific calls. Activity was measured at each of the three microphones by counting the number of bat calls that were recorded per night; bat activity could then be compared at varying distances from the highway. Journal information: PLoS ONE Explore further Credit: Jack Sparrow/public domain Statistical analysis was then completed to find if bat activity varied with distance from the road, and the results were highly significant. Kitzes said, “the key finding is that we find fewer bats near large roads – highways in our case – which suggests that these roads decrease the amount of suitable habitat for bat species”. It was also found that bats were generally more active in warmer temperatures. Kitzes went on to say that the results were expected, given that previous research has shown that large roads and highways are generally bad news for the native wildlife. But the effect of roads on bat activity may have been larger than some expected. It was found that there was around a 50 percent decrease in activity in bats recorded right next to the highway when compared to bats recorded 300 metres from the highway, a relatively large effect for such a small distance. And this effect was consistent across all four species. The current research paper did not attempt to decipher the mechanisms behind the road effect. But possible explanations include traffic noise, headlight illumination, or changes in wind speed (due to passing traffic) affecting the bat’s ability to hunt. Kitzes added, “If these results are confirmed with further studies, especially those that are able to identify the mechanism causing the road effect, future road construction and maintenance projects might need to consider accounting for the associated reduction in bat habitat as part of their impact assessments.” (c) 2014 This document is subject to copyright. Apart from any fair dealing for the purpose of private study or research, no part may be reproduced without the written permission. The content is provided for information purposes only.last_img read more

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Resurvey of mountains depicted in Tableau Physique reveal errors impact of climate

first_img Researchers in the cave of Antisana where Humboldt and Bonpland stopped in 1802 to collect plants. Credit: Pierre Moret. Enlargement of a section of this late, simplified version of Humboldt’s sketch of Andean vegetation highlights the cave of Antisana. Credit: Pierre Moret. More information: Pierre Moret el al., “Humboldt’s Tableau Physique revisited,” PNAS (2019). Explore further A team of researchers from Toulouse University, Pontificia Universidad and CNRS, Université de Montpellier, has conducted a resurvey of the mountains depicted in the famous “Tableau Physique,” and in so doing, have found both errors in the drawings and the true impact of climate change on the region. In their paper published in Proceedings of the National Academy of Sciences, the group describes the errors they found and the degree of vegetative change they recorded in the area. Upslope migration of tropical plants due to climate change In 1807, Alexander von Humboldt published “Tableau Physique”—a diagram showing a cross-section of mountains in the equatorial Andes, along with plant names. The point of the diagram was to show how the environment changes as elevations increase. In this new effort, the researchers revisited the places where von Humboldt had traveled with his companion botanist Aimé Bonpland to note the vegetation they found and to compare it to the diagram von Humboldt created.The researchers report that they discovered several errors in the drawing, mostly discrepancies regarding the altitudes at which certain plants were growing. But there was also one glaring error—von Humboldt had either been confused about where he was when describing vegetation growing at different altitudes on Chimborazo, a volcanic mountain, or he had mislabeled it. The modern researchers found that von Humboldt and Bonpland were actually on a different mountain—the one created by the volcano Antisana. At the correct location, the researchers found details that the earlier researchers had described, such as a cave where von Humboldt and Bonpland had camped in 1802. The modern researchers collected the same kinds of plants as the earlier researchers, noting the altitudes at which they were found. They report that their findings are significant because other modern researchers have been using the incorrect altitude data when making claims about differences due to climate change. The new survey showed, for example, that the highest plants on the mountain were growing 215 to 266 meters higher than von Humboldt and Bonpland had found. Other researchers using the incorrect data had claimed plants were growing up to 500 meters higher than they were during the 1800s. Journal information: Proceedings of the National Academy of Sciences © 2019 Science X Network 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. Citation: Resurvey of mountains depicted in Tableau Physique reveal errors, impact of climate change (2019, May 28) retrieved 18 August 2019 from read more

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Peaceful filing of nominations in Purulia lays Oppn claims to rest

first_imgKolkata: The peaceful submission of nomination by the Opposition parties in the ensuing three-tier Panchayat election in Purulia, has demolished the claim made by them that the ruling party workers had prevented their candidates from filing nominations.Chief Minister Mamata Banerjee had categorically stated on Wednesday that incidents of violence had taken place only in seven districts and in Purulia, along with some other districts, nomination papers were filed peacefully. Also Read – Heavy rain hits traffic, flightsIn Purulia, the statistics show that the Opposition parties had filed nominations in Gram Panchayat, Panchayat Samity and Zilla Parishad in great numbers.However, the intra-party fighting in Left Front has come to light as in addition to CPI-M, Front constituents Forward Bloc, RSP and CPI candidates have also filed their nominations.In Gram Panchayat, there are 1,944 seats. For these seats, Trinamool Congress has fielded 2,373 candidates, followed by 2,388 candidates by BJP. CPI-M has submitted 1,049 candidates while CPI, Forward Block and RSP have fielded 8, 169 and 7 candidates respectively. Also Read – Speeding Jaguar crashes into Merc, 2 B’deshi bystanders killedCongress has fielded 625 candidates. There are 527 Independent candidates and 291 other candidates.In Panchayat Samity, Trinamool Congress has fielded 680 candidates for 446 seats. BJP, CPI-M and Congress have fielded 609, 317 and 188 seats respectively. Forward Block has filed 51 candidates, while CPI and RSP have filed two candidates each. There are 98 Independent candidates followed by 83 others.In Zilla Parishad there are 38 seats. For these seats, Trinamool Congress has fielded candidates. BJP, CPI-M and Congress have filed 65, 33 and 32 candidates respectively. Forward Bloc has fielded seven candidates, while the Independents and others have filed 13 and 49 candidates respectively. Trinamool Congress has launched its poll campaign in full swing. The candidates have started visiting every household. Meghdoot Mahato, a Zilla Parishad candidate of Trinamool Congress, visited every household in Joypur. He, along with his party colleagues, are highlighting various steps which the state government has taken to strengthen rural economy, apart from improving the condition of roads and giving scholarships to the students coming from backward classes.last_img read more

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Dead woman comes back to life in crematorium

first_imgKolkata: In a bizarre incident, a 55-year-old woman who was declared dead by a doctor at RG Kar Medical College and Hospital on Friday morning, was found alive after she was brought to the crematorium at Ratan Babur Ghat later in the day.Sibani Biswas, a resident of Bankim Pally area of Madhyamgram in North 24-Parganas, was admitted to RG Kar Medical College and Hospital on June 11 with sepsis. She had been undergoing treatment at the general medicine ward in the Unit P section for the past few days. According to the death certificate, Biswas had been a patient of hypertension and diabetes. Also Read – Heavy rain hits traffic, flightsOn Friday morning, the patient was pronounced dead by a post-graduate trainee doctor. Death certificate was also issued to the family members of the woman by the hospital authorities.The family members took her to their house at Madhyamgram a few hours later.The family members then took her to the crematorium. When she was kept lying outside the electrical furnace, the family members felt warmth in her body.The incident triggered shock among them. Many of her relatives started raising questions on the role of the post-graduate trainee who had issued her death certificate. The incident created chaos at the crematorium. Also Read – Speeding Jaguar crashes into Merc, 2 B’deshi bystanders killedThe matter was immediately informed to Baranagar police station. The family members were told to take the woman to RG Kar again, which the family members readily denied. They later took her to Madhyamgram Matri Sadan Hospital.Meanwhile, the hospital authorities were also informed. According to hospital sources, the matter would be looked into.A probe would be conducted to find out if there was any negligence on the part of the doctor or any staff member.last_img read more

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Mamata flags off fleet of firefighter motorcycles

first_imgKolkata: In a bid to ensure better fire fighting arrangements, the state government has introduced a motorcycle-mounted advanced fire fighting system.Chief Minister Mamata Banerjee on Friday flagged off 100 motorcycle-mounted water mist CAF firefighting systems, five multipurpose foam tenders, 30 water browsers and 12 water tenders. The programme took place outside Nabanna and all the newly introduced vehicles of the state Fire and Emergency Services department rolled out one after the other. Also Read – Heavy rain hits traffic, flightsMayor Sovan Chatterjee, who is also the minister of the state Fire and Emergency Services department, Chief Secretary Malay De, Home Secretary Atri Bhattacharya, the state’s security advisor Surajit Kar Purkayastha and commissioner of Kolkata Police Rajeev Kumar were also present in the programme. The fire tenders, foam tenders and motorcycle-mounted firefighting arrangement is worth Rs 25.98 crore in total.The motorcycles fitted with the advanced firefighting system would help douse flames when there is any incident of fire in a narrow lane or in any congested area. It will also be effective in firefighting in hilly regions. Each of the motorcycles is fitted with two cylinders having 10 litres water carrying capacity each. Also Read – Speeding Jaguar crashes into Merc, 2 B’deshi bystanders killedEach of the multi-purpose foam tenders has a capacity of carrying 6,000 litres of water and 4,000 litres of foam. It also contains dry chemical powder and carbon-dioxide for extinguishing fire that breaks out due to leakage of oil or chemical, or in case of fire in any major electrical installation.It may be mentioned that in the past two years, the Fire and Emergency Services department has added 356 different types of vehicles that are worth Rs 71.66 crore, as a part of “modernising” the firefighting system in thestate.The number of fire stations in the state has also gone up to 138, out of which 16 were constructed in the past two years and construction of 20 more fire stations are going on in full swing.last_img read more

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Asst PF Commissioner accused of graft charges

first_imgKolkata: The Enforcement Directorate (ED) has conducted raids at six different places in the city in connection with graft charges against an Assistant Provident Fund Commissioner, for amassing disproportionate assets beyond the known sources of his income.The ED officers have raided the houses of the Assistant Provident Fund Commissioner Ramesh Singh in this connection.Officers of the ED got divided into separate teams and conducted raids at places including Park Street, Behala, Charu Market and Baruipur.The ED officers raided the office of the Employees Provident Fund Organisation (EPFO) at Park Street. His houses at Behala and Charu Market were also searched. The investigating officers seized relevant documents from the houses.The raids continued for hours and sources said that during the search operations, the ED officers have also questioned the Assistant Provident Fund Commissioner.The ED officers are now going through the documents that give detailed description of his property and it has been learnt that there are some papers related to his bank accounts and fixed deposits. According to an ED officer, they would further question the Assistant Provident Fund Commissioner if needed.It may be recalled that the ED had initiated a case after the Central Bureau of Investigation (CBI) arrested an Enforcement Officer of EPFO, Samiran Kumar Mondal, for taking a bribe. He was arrested in his Park Street office. He had allegedly demanded Rs 1 lakh from one Abhinandan Bose. Finally, the deal was finalised at Rs 20,000.last_img read more

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