COMAN Researchers build first fullylimbed passive compliant robot w video

first_img CAD assembly of the COMAN ankle modules. Credit: IIT Space Robot Can Autonomously Reconfigure Itself As part of their research effort, the team also developed a way to calculate the optimal joint elasticity for the various joints—current methods rely on trial and error. That should help speed up the development of passive compliant robots as the group has shared what they’ve learned with others. At just 94.5 cm tall and weighing in at 31.2 kg, COMAN appears far more approachable than most robots, despite the lack of a head—the team says they plan to add one at some point—and for that reason it seems more likely to be deployed as a domestic servant, rather than as a soldier or tool for disaster assistance as seems to be the case with so many other robots being developed. Citation: COMAN: Researchers build first fully-limbed passive compliant robot (w/ video) (2013, April 10) retrieved 18 August 2019 from https://phys.org/news/2013-04-coman-fully-limbed-passive-compliant-robot.html Explore further (Phys.org) —Researchers at the Italian Institute of Technology with funding from the European AMARSI project have built the first passive compliant robot that features both arms and legs. Passive compliant robots are those that have flexible joints that allow the robot to move in more human-like ways. The new robot, called the COmpliant huMANoid (COMAN), is approximately the size of a child and is able to maintain its upright position even when knocked around.center_img © 2013 Phys.org More information: COmpliant HuMANoid Platform (COMAN): www.iit.it/en/robots/coman.htmlvia IEEE Most robots, as demonstrated by various robotic development groups in videos posted to YouTube, have stiff joints, which result in jerky or stiff movement. The problem with such joints is that they make the robot unstable—a slight misstep could mean a fall or worse, injury to a person nearby. To smooth the gait and overall movement of robots, engineers have been investigating different types of flexible joint mechanisms. In this latest effort, the team used very small elastic actuators in the parts of the robot that need to flex or extend. They also added torque sensors to each joint that allow the central processor to cause the actuators to respond very quickly to external events, such as encountering an inclined path, or to being run into by other objects or people. What’s groundbreaking here is that the engineers created special compliant joints for so many areas of the robot’s body—a total of 25. COMAN has both arms and legs with joints and associated sensors in its ankles, knees, hips, waist, elbow, shoulder and neck. It walks with a more human gait and displays a very human-like ability to stand upright despite being knocked around by its makers. COMAN Humanoid. Credit: IIT 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

Nuclear pore complex successfully mapped and diagramed

first_img In order to carry out its various functions, the nucleus in every cell must be able to receive certain molecules and send others to other parts of the cell, but because other unnecessary or dangerous molecules can make their way into the cell, a means of protecting the nucleus has evolved—a double membrane which serves as a barrier. That barrier has on average, 2000 pores in it, each of which serve as a gatekeeper, either allowing a molecule through, or barring its entry. Though the job is very important, because it serves as a means of stopping viral or bacterial attacks, its structure has not been very well understood, until now. In these two new efforts, both teams have managed to create maps of the different layers that make up the rings of the pores, offering other medical researchers a new way perhaps, to combat diseases that manage to make it through the NPC.The team at Caltech has been working on the problem for 10 years, using electron cryotomography to study each part of each ring, successively adding more and more to a growing map. The end result describes all of the interconnections and interactions of all of the proteins in each pore, which is itself part of a larger system. The second team took the opposite approach, using mass spectrometry, cryo-electron microscopy and finally computer modeling to create a realistic rendering of an actual pore.As both teams note, now that the structure of the NPC has finally been mapped, the next step will be to learn more about how all the pieces work together to control the flow of molecules in and out of the nuclear envelope and perhaps to devise a means for providing assistance when the NPC fails. Biochemists solve the structure of cell’s DNA gatekeeper Citation: Nuclear pore complex successfully mapped and diagramed (2016, April 15) retrieved 18 August 2019 from https://phys.org/news/2016-04-nuclear-pore-complex-successfully-diagramed.html (Phys.org)—Two teams of researchers taking different approaches have successfully mapped and diagramed the nuclear pore complex (NPC)—protein complexes that make up the pores in the nuclear envelope that allow or prevent passage of molecules into the nucleus. One team from the California Institute of Technology took a bottom-up approach to discovering the makeup of the pore rings, while a team with members from several institutions in the U.S. and Germany took a top-down approach. Both have published their results in the journal Science. More information: D. H. Lin et al. Architecture of the symmetric core of the nuclear pore, Science (2016). DOI: 10.1126/science.aaf1015AbstractThe nuclear pore complex (NPC) controls the transport of macromolecules between the nucleus and cytoplasm, but its molecular architecture has thus far remained poorly defined. We biochemically reconstituted NPC core protomers and elucidated the underlying protein-protein interaction network. Flexible linker sequences, rather than interactions between the structured core scaffold nucleoporins, mediate the assembly of the inner ring complex and its attachment to the NPC coat. X-ray crystallographic analysis of these scaffold nucleoporins revealed the molecular details of their interactions with the flexible linker sequences and enabled construction of full-length atomic structures. By docking these structures into the cryoelectron tomographic reconstruction of the intact human NPC and validating their placement with our nucleoporin interactome, we built a composite structure of the NPC symmetric core that contains ~320,000 residues and accounts for ~56 megadaltons of the NPC’s structured mass. Our approach provides a paradigm for the structure determination of similarly complex macromolecular assemblies. J. Kosinski et al. Molecular architecture of the inner ring scaffold of the human nuclear pore complex, Science (2016). DOI: 10.1126/science.aaf0643 AbstractNuclear pore complexes (NPCs) are 110-megadalton assemblies that mediate nucleocytoplasmic transport. NPCs are built from multiple copies of ~30 different nucleoporins, and understanding how these nucleoporins assemble into the NPC scaffold imposes a formidable challenge. Recently, it has been shown how the Y complex, a prominent NPC module, forms the outer rings of the nuclear pore. However, the organization of the inner ring has remained unknown until now. We used molecular modeling combined with cross-linking mass spectrometry and cryo-electron tomography to obtain a composite structure of the inner ring. This architectural map explains the vast majority of the electron density of the scaffold. We conclude that despite obvious differences in morphology and composition, the higher-order structure of the inner and outer rings is unexpectedly similar. Explore furthercenter_img Journal information: Science © 2016 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. Composite structure of the symmetric core of the nuclear pore complex, shown in a cartoon representation. The composite structure was generated by sequential unbiased searches for each protein subunit. Distinct subunits are distinguished by different colors. The nuclear envelope is shown as a grey surface. Credit: Hoelz Laboratory/Caltech and Science/AAASlast_img read more

Remembering a legend

first_imgThe Bengali Indian music wizard Pankaj Mullick’s legacy is to be commemorated in a symphonic evening. Pankaj Mullick Music and Art Foundation is organizing a melodious musical evening as a tribute to the pioneer of film music.Jawahar Sircar IAS, CEO of Prasar Bharti, chief guest of the event will be accompanied by the guest of honor Bhaskar Khulbe IAS, Principal Resident Commissioner, Government of West Bengal.DETAILVenue: Kamani Auditorium, Mandi House Date: 9 AprilTime: 6.30 PMlast_img

High on handicraft

first_imgThe annual fair of artisans from across the country, Shilpostav 2014, started off at Dilli Haat yesterday. Secretary, Ministry of Social Justice and Empowerment, Sudhir Bhargava inaugurated the ten-day festival that will continue till 10 November. Speaking on the occasion the Secretary said that for the progress of any section of the society, they should become financially independent. The Ministry of SJE is working towards empowering marginalised and disadvantaged artisans and in continuance of this Shilpostav 2014 has been organised.  Also Read – ‘Playing Jojo was emotionally exhausting’The Secretary further added that there are 160 stalls where in artisans assisted by the Apex corporations i.e. National Backward Classes Finance  Development Corporation (NBCFDC), National Scheduled Caste Finance and Development Corporation (NSFDC), National Handicapped Finance and Development Corporation (NHFDC), National SafaiKaramchari Finance and Development Corporation (NSKFDC) and National Trust will display and sell their products. The National Institutes under the Ministry is also showcasing their schemes and facilities.  Also Read – Leslie doing new comedy special with NetflixThe range of products in this fair includes – silk sarees, durries, readymade garments, terracotta product, jute products, dress material, Kashmiri shawls/stoles, leather, cane and bamboo products, hand embroidery, bead products, pearls, imitation jewellery, lakh products, decorative candles, wood carving, block printing, wooden toys, tie and dye, wood, marble artifacts, handloom etc. To entertain the gathering, a daily cultural presentation by top-notch performers is also organised.last_img read more

SIA investigates allegations of rude crew on delayed Kolkata flight

first_imgSingapore: Singapore Airlines (SIA) is looking into allegations of rude crew behaviour made by a passenger on a recent flight from Singapore to Kolkata which was delayed by almost three hours, a media report said here today. On June 8, Flight SQ516 had experienced technical issues on the ground, resulting in a delay of two hours and 52 minutes. In a Facebook post, Chandni Doulatramani, who was on the plane, claims that cabin crew were rude to passengers who had asked why the flight was delayed, the Straits Times reported. Also Read – Heavy rain hits traffic, flights In her post, accompanied by a video that has since been widely shared, Doulatramani said that upset passengers, who had already boarded the plane, became more agitated when they were allegedly told to remain in their seats with their seat belts on. The Singapore daily quoted her as saying, “When we confronted the cabin crew, they had no answers, rudely shut us up, threatened to call the cops to arrest us, and said ‘We are in the same situation as you are, don’t ask us, we don’t know anything’.” Also Read – Speeding Jaguar crashes into Merc, 2 B’deshi bystanders killed She said, “The airline didn’t let anybody go. We were being treated like prisoners, being asked to sit in our seats and wear our seat belts. They told us if we were going to offload ourselves then we wouldn’t be allowed back in and they would put us on another plane which was two days later and they wouldn’t compensate us for any of it.” In the video she posted, passengers are seen arguing with airline staff. “We sincerely apologise for the inconvenience caused to our customers on board,” SIA said. With regard to the online post, we take these claims seriously and will be looking into them thoroughly,” the airline was quoted as saying.last_img read more

CID raids Naktala home of Bharati Ghoshs husband

first_imgKolkata: The Criminal Investigation Department (CID) has conducted a raid at the Naktala house of former IPS officer Bharati Ghosh’s husband MAV Raju on Tuesday.The investigating officers took Raju along with them while conducting the search operation in the house.Raju was arrested by CID on August 7 in connection with the Daspur case, in which gold was taken from traders assuring a high rate of return, after demonetisation of high value notes was announced. Also Read – Rain batters Kolkata, cripples normal lifeA senior officer of CID said that the raid was conducted for around three hours and they have seized six pendrives and one hard disc.The investigating officers are considering that they would be getting many documents from the seized sources that will help them get many leads to proceed with their investigation. Raju was arrested after the Calcutta High Court rejected his plea for anticipatory bail. He was taken to the CID headquarters at Bhabani Bhavan, soon after the arrest.last_img read more

META confers Lifetime Achievement Award to Ratan Thiyam

first_imgMahindra Excellence in Theatre Awards (META) announced the Lifetime Achievement Award for 2016 on March 1. The award will be conferred to noted theatre guru Ratan Thiyam for his contribution to Indian theatre.Padmashree Ratan Thiyam has created a new language in theatre and has enriched the art form in various roles, as a writer, director, designer, composer and choreographer. He is currently the chairman of National School of Drama (NSD).The META Jury for 2016 was also announced which comprised of distinguished personalities from the world of art and literature including author Kunal Basu, actor Kusum Haider, director and actor MK Raina, dancer, choreographer Tanushree Shankar and actor, director Sushma Seth. The curtain raiser for the 11th edition of META featured a discussion on ‘Theatre as an agent of Social Change’ which brought to light how theatre is being used as a catalyst in bringing about changes in societal norms, re-casting traditions into contemporary contexts and looking at key messages of change across communities.Talking about the decade long journey of META and looking forward in its 11th year Jay Shah, Head, Cultural Outreach, Mahindra and Mahindra Ltd. said, “It’s heartening to see how META has been accepted and appreciated by the theatre industry in India and carved a place for itself in cultural calendars. The response we get from the fraternity and from theatre enthusiasts, is phenomenal. We look forward to staging some of the best theatre we’ve found in the past year and are immensely grateful to the esteemed Jury members who’ve come on board to recognise and reward Indian theatre today.”last_img read more

Committee set up for further devp of fisheries sector

first_imgKolkata: A committee has been set up for further development in the sector of fisheries.Speaking on the same, Chief Minister Mamata Banerjee said: “A committee comprising seven to eight departments has been formed. 2.5 lakh ponds have been curated under the Jal Dharo Jal Bharo Prakalpa to encourage pisciculture.” Banerjee further said that fishes still have to be imported from other states. Steps have been taken to make Bengal self-sufficient in this regard. Also Read – Rain batters Kolkata, cripples normal lifeInitiatives have been taken for pisciculture in 700 ponds to produce big fish, which take two years to grow. She further said that a pisciculture research centre has been set up for further development in the sector. Initiatives have also been taken for production of hilsa in the state itself, she added. The state Fisheries department is also ready to help if anyone is interested in the pisciculture sector. Initiatives have been taken to utilise unused water bodies in the state for pisciculture. The state Fisheries department has also prepared a roadmap to increase the production of fishes in the next couple of years. It may be mentioned that the overall production of fishes in the state was 17.42 lakh metric tonnes last year. The Fisheries department is taking a series of steps to increase the production in the current year.last_img read more

No differences with Sovan affirms Mamata

first_imgKolkata: Chief Minister Mamata Banerjee ruled out any crisis in the government and at the same time, reiterated that there is no differences between her and Sovan Chatterjee, in connection with the latter’s resignation.”There is no crisis at all. One can always resign and there are provisions. There is no misunderstanding either. Someone can have personal problems,” Banerjee said during the discussion of the Kolkata Municipal Corporation (Second Amendment) Bill, 2018, at the state Assembly. Also Read – Rain batters Kolkata, cripples normal lifeLater, the Chief Minister told reporters that Chatterjee had sent his resignation four to five times earlier. “We had tried to see that he doesn’t resign and continues with his work properly. He had tendered his resignation from the post of minister on Tuesday. Both me and Bobby (Firhad Hakim) spoke to him. He had tendered his resignation, so we had considered that he didn’t want to work for some days as he is having some personal problems. So, he was asked to give resignation from the post of Mayor,” Banerjee said. Also Read – Speeding Jaguar crashes into Mercedes car in Kolkata, 2 pedestrians killedMeanwhile Chatterjee, who tendered his resignation from the position of Mayor of Kolkata on Thursday, claimed that he did so at the behest of party supremo Mamata Banerjee. “My decision to resign as the KMC Mayor, has been taken considering my party’s will and instructions. There has been no dereliction of duty on my part both as a minister and Mayor. It is my duty to follow the order given out by the party supremo. I have done what was expected of me,” Chatterjee said, addressing a Press conference at his Golpark residence. “I have always followed her (Mamata Banerjee’s) instructions and will continue to do so. I will congratulate the new Mayor. I have heard that Firhad Hakim has been given the charge and I will extend all my help and cooperation, if required” assured Chatterjee. Chatterjee said that he had already sent documents related to his resignation to KMC chairperson Mala Roy. “Yesterday (Wednesday) was a public holiday and I had informed of my resignation today (Thursday),” he added. He also made it clear that if his party wants him to resign from the post of councillor, he is ready to do so. Chatterjee is the councillor of ward 131 of KMC. “KMC has helped me connect with the citizens. I will continue to play my role as a party member,” he added.last_img read more

Engrossed in art

first_imgShowcasing some breath-taking masterpieces, ‘Engross’, an art show by Sudip Roy, Niren Sen Gupta, S.C Ahuja and Suresh Kumar is taking place at the India Habitat Centre until January 22. Sudip Roy’s work includes pencil sketches and watercolours, charcoals and a heady series of landscape done in limped line drawing. His forte lies in his realistic and in-depth rendering of still life. One of his recent famed painting ‘Charulata’ is a perfectly demarcated figure which casts a spell on its beholders with the right touch of sensuality added to it. Considering his artwork he said, “Art is something which makes you breathe with a different kind of happiness.” Some of his artworks include Victoria Memorial painting, Venice painting, and Mother Teresa painting. Also Read – Add new books to your shelfWhereas, Niren Sengupta is a contemporary artist. He finds lasting beauty in the serenity of the total surrender of monks of Ramakrishna Mission. A mission that signifies sacrifices and service to mankind. His works are aesthetic expressions of his inner reflections infused with serenity, sacrifice, service and beauty. Suresh Kumar is a Bangalore-based Sculptor. He recently travelled to Uzbekistan for an international show in “Srijan-Yatra” group exhibition and “The Bridge”international Art exhibition at The Nehru – Wangchuck Cultural Centre (NWCC) Bhutan. His recent project “The Per-Fumes” project was a response to Suresh’s ongoing concern about education in the arts, documentation of contemporary practices, and his interest in creating collective spaces for sharing in-process work. ‘It is also an ideological comment on Suresh’s approach to arts practice. He wished to develop the pedagogy of collaborative community and public art by documenting the work of 180 Bangalore-based visual artists via the medium of video. While expressing about his paintings he said , “A sculpture is an art of intelligence.”S.C Ahuja is heavily inspired by natural surroundings, and his sculptures touch the everyday reality of an ordinary man. He brings his expertise to the fore by envisioning the emotions and expressions of different people and decoding the same contemplation through the curves of his sculptures. In his recent work, he showcased sculptures of music artist. He also mentioned “Art is not what you see but what you make others see.last_img read more