Nanoscience May Produce Perfect Materials

first_img Figure 2: A plot of hardness as a function of grain size for WC-NiAl, with increasing numbers on the x-axis representing decreasing grain size. As grain size gets smaller, the hardness increases, peaking at a critical grain size. A scientist at North Carolina State University has discovered that the tiny grains comprising many bulk materials can potentially contain nearly zero structural imperfections when the grains are smaller than a certain critical size, typically a few to several nanometers. Therefore, materials created with grains of the right size could be structurally flawless. Not only would these materials possess exceptional strength and durablity, but their optical, electrical, and magnetic properties could be vastly improved as well. The number of potential applications, such as smart sensors and ultra-efficient “solid-state” lighting, as well as entire industries impacted, such as automobiles and defense, is staggering. “Nanostructured materials offer a unique opportunity to realize perfect materials with greatly improved properties,” said NCSU materials scientist Jagdish (Jay) Narayan, the study’s sole researcher, to PhysOrg.com. “Copper, for example, can be made as strong as steel by reducing the grain/feature size so that defects cease to exist.”In his paper describing the work, published in the August 7 online edition of the Journal of Applied Physics, Narayan discusses the many types of defects that can be present in a material and shows, via theoretical arguments and a couple of specific examples, how controlling grain size may be able to prevent them.For example, one type of defect is a dislocation, an irregularity in the repetitive pattern of a crystalline material that compromises strength. It is nearly impossible to eliminate dislocations, Narayan says, but reducing the grain size can theoretically restrict the movement of a dislocation so that it can’t propagate through the rest of the material. For copper, he calculates that this will occur at the critical grain size of about 7.5 nanometers (nm).He provides a specific example of how grain size affects a material’s properties, using a nanocomposite material made of two compounds, tungsten carbide (WC) and nickel aluminide (NiAl). The NiAl component acts as a hardening agent, bonding with atoms at the surface of WC nanoparticles. Because WC-NiAl grains are all about the same size, it is a good material for testing how grain size affects hardness. The results show the hardness of WC-NiAl increases as its grain size decreases, but only down to a critical grain size. Below that, the material begins to get softer. Citation: Nanoscience May Produce ‘Perfect’ Materials (2006, August 25) retrieved 18 August 2019 from https://phys.org/news/2006-08-nanoscience-materials.html Figure 1: Transmission electron microscope images of WC-NiAl, with (top) an average grain size of 11 nm and (bottom) an average grain size of 6 nm. Nanoporous material nets contaminant from watercenter_img Nanoscience may provide a way to engineer materials that are virtually defect-free – perfect, that is. Explore further But there are some challenges to overcome before a “perfect” material could truly be achieved. The problems lie at the interfaces between grains, where the surfaces of two grains meet. There, some defects may persist because it is difficult for scientists to control certain properties and grain-to-grain interactions, such as atomic structure, chemistry, and atomic bonding.Just how difficult is determined by the ratio of surface atoms to inner-grain atoms. As grain size gets smaller, this ratio gets larger – there are more and more surface atoms relative to non-surface atoms. Through additional research, scientists may be able to make adjacent grains come together harmoniously and prevent defects between them.Citation: Journal of Applied Physics, Volume 100, 0034039 (2006)By Laura Mgrdichian, Copyright 2006 PhysOrg.com 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

Optic lobe of giant squid found proportionally smaller than for other cephalopods

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. The dramatization of an underwater encounter between the sperm whale and giant squid, from a diorama in the Hall of Ocean Life at the American Museum of Natural History. Credit: Mike Goren/Wikipedia/CC BY 2.0 Journal information: Royal Society Open Science (Phys.org)—A team of researchers in Taiwan has found that despite having outsized eyes, giant squid do not have an overly large optic lobe to match. In their paper published in the journal Royal Society Open Science, the group describes carrying out a study of a giant squid captured alive by local fishermen and what they found upon examining the vision processing parts of its brain. As the researchers note, despite their notoriety, some aspects of the giant squid have not been studied very well—this is because they are very rarely captured alive. Study of the live brain of the squid, for example, has been extremely limited. In this new effort, the researchers took advantage of a unique opportunity—local fishermen happened to catch one of the elusive sea creatures and alerted the researchers to the find.It has often been noted that giant squid have eyes that are so large they look somewhat comical, but unfortunately, little work has been done to understand their size and thus what benefits they confer to squids. For that reason, upon finding a live specimen on their table, the researchers immediately focused on the optic lobe using MRI—they found that despite the huge eyes, the lobe was not larger proportionally than that of other cephalopods, and in fact, was actually smaller. The researchers found that the cortex, which is used by other cephalopods to process visual information, was neuron rich, while the medulla was not—it is used by other cephalopods for communicating visually with others of their kind.The researchers note that their findings are not surprising—smaller cephalopods live in well-lit close quarters with other cephalopods in visually complex environments, and thus much more visual communication (like camouflage) is needed. The finding also confirms suspicions that the large eyes of the giant squid have evolved to capture more light in a dark underwater environment, particularly light emitted by clouds of bioluminescence that indicate a sperm whale is nearby—one of the few sea creatures that prey on giant squid. Despite multicolor camouflage, cuttlefish, squid and octopus are colorblindcenter_img More information: Yung-Chieh Liu et al. Mismatch between the eye and the optic lobe in the giant squid, Royal Society Open Science (2017). DOI: 10.1098/rsos.170289AbstractGiant squids (Architeuthis) are a legendary species among the cephalopods. They live in the deep sea and are well known for their enormous body and giant eyes. It has been suggested that their giant eyes are not adapted for the detection of either mates or prey at distance, but rather are best suited for monitoring very large predators, such as sperm whales, at distances exceeding 120 m and at a depth below 600 m (Nilsson et al. 2012 Curr. Biol. 22, 683–688. (DOI: 10.1016/j.cub.2012.02.031)). However, it is not clear how the brain of giant squids processes visual information. In this study, the optic lobe of a giant squid (Architeuthis dux, male, mantle length 89 cm), which was caught by local fishermen off the northeastern coast of Taiwan, was scanned using high-resolution magnetic resonance imaging in order to examine its internal structure. It was evident that the volume ratio of the optic lobe to the eye in the giant squid is much smaller than that in the oval squid (Sepioteuthis lessoniana) and the cuttlefish (Sepia pharaonis). Furthermore, the cell density in the cortex of the optic lobe is significantly higher in the giant squid than in oval squids and cuttlefish, with the relative thickness of the cortex being much larger in Architeuthis optic lobe than in cuttlefish. This indicates that the relative size of the medulla of the optic lobe in the giant squid is disproportionally smaller compared with these two cephalopod species. This morphological study of the giant squid brain, though limited only to the optic lobe, provides the first evidence to support that the optic lobe cortex, the visual information processing area in cephalopods, is well developed in the giant squid. In comparison, the optic lobe medulla, the visuomotor integration centre in cephalopods, is much less developed in the giant squid than other species. This finding suggests that, despite the giant eye and a full-fledged cortex within the optic lobe, the brain of giant squids has not evolved proportionally in terms of performing complex tasks compared with shallow-water cephalopod species. © 2017 Phys.org Citation: Optic lobe of giant squid found proportionally smaller than for other cephalopods (2017, July 26) retrieved 18 August 2019 from https://phys.org/news/2017-07-optic-lobe-giant-squid-proportionally.html Explore furtherlast_img read more

Separate experiments show no evidence of violation of Lorentz invariance

first_img When physicists conduct relativistic experiments that involve physical measurement, their findings should not rely on the orientation or speed of the place in which the experiments take place, according to the standard model of particle physics. This principle is known as Lorentz invariance, and testing it is one of the ways of testing the theory of relativity itself. In this new effort, both research teams have tested the principle with the tightest constraints to date and both offer more accuracy than has been seen in the past.One of the groups, with team members from Italy, France and U.S., used a half-century’s worth of data collected via lunar lasing—bouncing a beam off a mirror left on the moon’s surface by manned Apollo missions. The data represents measurements of the moon’s orbit around the Earth as well as its rotation. Using the data, they found it consistent with null coefficients, which meant no violations of Lorentz invariance were found. They also report that their study offered accuracy between 100 and 1000 times better than was possible in previous efforts.The other group was made up of researchers at Carleton College in the U.S. They obtained data from other teams working over several years using superconducting gravimeters to conduct experiments. Such meters can be used to calculate gravitational acceleration by measuring the position of a superconducting sphere as it is levitated in a magnetic field. This team also reported that the coefficients they derived were all consistent with zero. They further note that their efforts were 10 times as accurate as prior efforts and that some of the results were the first of their kind ever obtained.By placing ever tighter constraints when testing physics theories, researchers offer stronger proof that the principles that underlie basic theories such as relativity are sound. Citation: Separate experiments show no evidence of violation of Lorentz invariance (2017, November 20) retrieved 18 August 2019 from https://phys.org/news/2017-11-evidence-violation-lorentz-invariance.html (Phys.org)—Two teams of researchers working independently of one another have conducted experiments designed to test Lorentz invariance; both report no violations. One of the teams used decades of data from lunar lasing experiments, the other data from experiments conducted over several years using superconducting gravimeters. Both teams have published papers in the journal Physical Review Letters describing their work and their findings. Explore further Still no violation of Lorentz symmetry, despite strongest test yet © 2017 Phys.orgcenter_img More information: 1. A. Bourgoin et al. Lorentz Symmetry Violations from Matter-Gravity Couplings with Lunar Laser Ranging, Physical Review Letters (2017). DOI: 10.1103/PhysRevLett.119.201102 , https://arxiv.org/abs/1706.06294ABSTRACTThe standard-model extension (SME) is an effective field theory framework aiming at parametrizing any violation to the Lorentz symmetry (LS) in all sectors of physics. In this Letter, we report the first direct experimental measurement of SME coefficients performed simultaneously within two sectors of the SME framework using lunar laser ranging observations. We consider the pure gravitational sector and the classical point-mass limit in the matter sector of the minimal SME. We report no deviation from general relativity and put new realistic stringent constraints on LS violations improving up to 3 orders of magnitude previous estimations.2. Natasha A. Flowers et al. Superconducting-Gravimeter Tests of Local Lorentz Invariance, Physical Review Letters (2017). DOI: 10.1103/PhysRevLett.119.201101 , https://arxiv.org/abs/1612.08495ABSTRACTSuperconducting-gravimeter measurements are used to test the local Lorentz invariance of the gravitational interaction and of matter-gravity couplings. The best laboratory sensitivities to date are achieved via a maximum-reach analysis for 13 Lorentz-violating operators, with some improvements exceeding an order of magnitude. 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. Credit: C. Carreau/ESA, via Physics Journal information: Physical Review Letterslast_img read more

Developing a dualgradient ultrafast biomimetic snapping hydrogel material

first_img TOP: Transformation of a dual-gradient composite hydrogel sheet into complex shapes by programming energy pre-storage. (A) Inverse snapping of a composite hydrogel sheet in 20°C water after NIR irradiation regionally of the sheet in air. (B) Programmable folding of a composite hydrogel sheet into a cube in 20°C water after NIR irradiation of the highlighted regions in air. Scale bars, 1 cm. BOTTOM: General criterion for inverse snapping of hydrogel sheets. (A) Production diagram of various hydrogel sheets: composite hydrogel sheets under different initial TH, bilayer PNIPAM hydrogel sheets with different dual gradients, and bilayer hydrogel sheets with different single gradients. (B and C) Deformation of different bilayer hydrogel sheets under the stimuli of 20° and 40°C: double gradients (B) and single gradient (C). Scale bars, 1 cm. Credit: Science Advances, doi: 10.1126/sciadv.aav7174. LEFT: Illustrative scheme of the snapping deformation. (A) Snapping of the Venus flytrap. (B) Inverse snapping of a dual-gradient hydrogel sheet. (C) A carton showing the cross section of a dual-gradient hydrogel. RIGHT: Inverse snapping of dual-gradient rGO/PDMAEMA hydrogel sheets. (A and B) Schematic illustration (A) and cross-sectional SEM image (B) of the dual-gradient structure of rGO/PDMAEMA hydrogel sheets. (C) Shape transformation of the sheets in response to temperature variation. (D and E) Inverse snapping of the sheets with strip patterns to form chiral structures with controlled handedness. Scale bars, 1 cm (C and D). Credit: Science Advances, doi: 10.1126/sciadv.aav7174 When the scientists submerged the patterned hydrogel material from water at 200C into 600C higher than its volume phase transition temperature, the originally flat composite hydrogel sheet curved up. On replacing it in the 200C water bath, the hydrogel took a completely different route to reverse transform its shape, giving rise to a new intermediate state. Fan et al. observed the rapid, inverse snap (in less than 1 second) associated with a sharply increased bending angle from 38 degrees to 540 degrees, to gradually unroll and become a flat structure as before, in approximately 60 mins. The scientists deduced the inverse snapping of hydrogel sheets as a new mechanism of energy transformation and divided the process to three stages. (1) Converting part of the prestored thermal/chemical effective energy (E*) into cumulative elastic energy during curled sheet unrolling. (2) Instantaneous release of accumulated elastic energy (E’) in the form of snapping, and (3) Gradual release of the rest energy (E”) to curl further after snapping. Temperature variation in the experimental setup affected the deformation rate of the hydrogel sheet. As a result, Fan et al. were able to quantitatively program the snapping rate of the sheets by tuning the magnitude of its prestored energy with variable temperatures, to stimulate the gel. LEFT: Illustrative scheme of the snapping deformation. (A) Snapping of the Venus flytrap. (B) Inverse snapping of a dual-gradient hydrogel sheet. (C) A carton showing the cross section of a dual-gradient hydrogel. RIGHT: Inverse snapping of dual-gradient rGO/PDMAEMA hydrogel sheets. (A and B) Schematic illustration (A) and cross-sectional SEM image (B) of the dual-gradient structure of rGO/PDMAEMA hydrogel sheets. (C) Shape transformation of the sheets in response to temperature variation. (D and E) Inverse snapping of the sheets with strip patterns to form chiral structures with controlled handedness. Scale bars, 1 cm (C and D). Credit: Science Advances, doi: 10.1126/sciadv.aav7174 Fan et al. controlled the magnitude and location of stored energy in the hydrogel sheets to program their snapping reaction and achieve different structures and actuation behaviors. They developed a theoretical model thereafter to demonstrate the crucial role of dual gradients and predicted the snapping motion of a variety of different hydrogel materials. The new design principle will provide guidance to engineer actuation materials for applications in tissue engineering, soft robotics and as active medical implants. The results are now published in Science Advances. Shape transformation is ubiquitous in living systems such as carnivorous plants that strategically capture prey, providing a natural source of inspiration to engineer functional shape-transforming materials in the lab. Responsive hydrogels are capable of shape transformation under a variety of stimuli, with promising applications already delivered in soft robotics, drug delivery, tissue engineering and microfluidics. Scientists have used thermo-responsive polymers such as poly(N,N-dimethylaminoethyl methacrylate) (PDMAEMA) and poly(N-isopropylacrylamide) (PNIPAM) to design such shape-transforming materials. Shape transformation of hydrogels mainly rely on the different swelling rates of hydrogels in different regions of the materials, where the gradual shape evolution is driven via in-plane and out-of-plane mismatch in the changing volume of hydrogels. Present efforts therefore focus on enhancing the shape complexity to diversify the materials response to external stimuli. , Angewandte Chemie More information: 1. Dual-gradient enabled ultrafast biomimetic snapping of hydrogel materials DOI: 10.1126/sciadv.aav7174 , https://advances.sciencemag.org/content/5/4/eaav7174 Wenxin Fan et al., 19 April 2019, Science Advances.2. A light-driven artificial flytrap www.nature.com/articles/ncomms15546 Owies M. Wani et al. 23 May 2017, Nature Communications.3. Advances in engineering hydrogels science.sciencemag.org/content … 37/eaaf3627.abstract Yu Shrike Zhang and Ali Khademhosseini. 05 May 2017, Science.4. Photothermally reprogrammable buckling of nanocomposite gel sheets onlinelibrary.wiley.com/doi/ab … .1002/anie.201412160 Adam W. Hauser, 05 March 2015, Angewandte Chemie (International Edition in English). Hydrogels change water and solute dynamics As a proof-of-principle, they demonstrated the self-regulated actuation capabilities, where the pre-stimulated hydrogel sheet snapping mechanism triggered weight lifting in water temperatures varying from 200C to 600C. The maximum weight that could be lifted increased with changing temperature. The scientists provided a concept to control energy storage and release in hydrogels, allowing intelligent materials design with programmable motion instilled with abilities for mass identification and power regulation. Due to the weak polyelectrolyte nature of PDMAEMA, Fan et al. also showed that the snapping motion could be regulated by stimulating the gel pH through ion strength (IS) variation. As with temperature stimulation, the hydrogel sheets demonstrated similar mechanistic behavior, under a broad range of IS conditions. The new materials were thus built with versatility to surpass the existing limitations of narrow operating conditions in materials engineering. The scientists also showed that the composite hydrogels were responsive to near-infrared (NIR) light due to photothermal effects of the constituent rGO. They demonstrated programmable folding of the gel sheet into a cube via controlled light exposure and energy storage within the sheet as an example, with great potential in biomedicine for minimally invasive surgical procedures and in soft robotics. The scientists then quantified the snapping process to establish a general criterion for inverse snapping and credited the characteristic nature to the dual-gradient structure of the hydrogel sheet. The scientists verified the general criterion of inverse snapping by comparing the deformation behaviors of bi-layered PNIPAM hydrogel sheets with dual gradients and those with cross-linking density alone. They found that the dual-gradient PNIPAM sheets exhibited inverse snapping motions, while all single-gradient hydrogels only showed conventional simple bending in response to thermal stimulation. Lifting processes of the hydrogel actuator after energy storage at 60°C. Credit: Science Advances, doi: 10.1126/sciadv.aav7174. Citation: Developing a dual-gradient ultrafast biomimetic snapping hydrogel material (2019, April 24) retrieved 18 August 2019 from https://phys.org/news/2019-04-dual-gradient-ultrafast-biomimetic-snapping-hydrogel.html In this way, the scientists demonstrated a general principle to design hydrogels using the energy transformation ability to trigger programmable snapping deformation. They controlled the magnitude and site of energy pre-storage in the hydrogels to program inverse snapping and achieve different actuations and structures. Fan et al. credited the energy transformation-induced snapping to the dual-gradient structure (containing a polymer chain density gradient and cross-linking density gradient). They ultimately proposed a theoretical model to interpret and predict the snapping of hydrogels, which agreed with the experimental observations. The dual-gradient hydrogel can work directly as a self-propelled, intelligent actuator infused with the ability to identify weights and control power under constant stimuli. The research will provide new insights to rapidly actuate diverse materials alongside practical guidance in the design and development of autonomous actuators, soft robotics and active medical implants in the future.center_img As an example, leaves of the Venus flytrap can rapidly close and capture insects in one-tenth of a second, which is distinct from synthetic hydrogels that have thus far only shown gradual and relatively slow shape transformation. The extremely rapid motion of the Venus flytrap is credited to the accumulation and quick release of energy that can assist the sudden, yet, discontinuous motion essential to develop ultrafast actuators with broad applications in soft robotics through biomimicry. Existing approaches to achieve this type of motion rely on reversible switching between concave and convex structures of bi-stable polymeric sheets – but this strategy only allows limited structural complexity and actuation behavior. As a result, an existing need remains to design new principles of snapping motion that will be interlaced into responsive biomaterials. , Nature Communications Inverse snapping of hydrogel sheet submerged from 60°C into 20°C water. Credit: Science Advances, doi: 10.1126/sciadv.aav7174. Bioinspired materials are designed and engineered to mimic the biological functions of nature; however fast actuation is an important but challenging task to recreate in the lab. In a recent study, Wenxin Fan and co-workers in the interdisciplinary departments of materials science, engineering, chemistry, biochemistry and macromolecular science in the USA and China, presented a new paradigm to design responsive hydrogel sheets that could exhibit ultrafast and inverse snapping deformation. They engineered the hydrogel sheets with dual-gradient architecture to accumulate elastic energy in the polymers by converting prestored energy for rapid reverse snapping and energy release. , Science Advances In the present work, Fan et al. reported a nature-inspired design of responsive hydrogel sheets that accumulated elastic energy and rapidly released the energy during ultrafast snapping deformation. Using experimental results and theoretical models, the scientists showed that the snapping motion of the hydrogels originated from their dual-gradient (polymer chain density gradient and cross-linking density gradient) structural design. In the experiments they used reduced graphene oxide (rGO)/PDMAEMA composite hydrogel sheets with dual gradient structures as a model system and demonstrated that the sheets could accumulate elastic energy and convert the pre-stored thermal or chemical energy to rapidly snap. Mechanically, the novel hydrogel could snap in reverse under a second (<1 s), to release the stored elastic energy in response to external stimuli. Fan et al. were able to tune the velocity, angle and location of snapping in the hydrogel sheet to control the position and magnitude of prestored energy. As a result, the scientists were able to program the sheets to achieve different structures and actuation behaviors. They propose to extend the new design principles of snapping deformation to other materials including neat hydrogels and elastomers in future work. Fan et al. first engineered the composite rGO/PDMAEMA composite hydrogel under ultraviolet (UV)-induced free radical generation of GO (graphene oxide) to initiate polymerization of the DMAEMA (monomer) and N,N'-methylene-bis-acrylamide (MBA; crosslinking agent). They irradiated a mixture of GO, DMAEMA and MBA filled in-between a sealed space with UV light and showed how the light intensity along the side generated a higher concentration of free radicals on the GO surface for faster polymerization. The fabrication process characteristically allowed higher chain density and crosslinking density of the hydrogel, which was confirmed using scanning electron microscopy (SEM), confocal laser scanning microscopy (CLSM), X-ray photoelectron spectroscopy (XPS) and Raman spectra. Journal information: Science Explore further © 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.last_img read more

Story on Sister Nivedita comes out in Wimbledon newsletter

first_imgKolkata: Over a century after Sister Nivedita’s death, Wimbledon newsletter has carried a story on her and the Wimbledon library has set up a separate section dedicated to her on her sesquicentennial birth anniversary. Pamela Greenwood, a local writer, has written a piece on Sister Nivedita, which is more less her life’s sketch. She starts with the days when Margaret Noble, later Sister Nivedita, had first come to Wimbledon and joined Madame de Leew’s Froebel School in Berkeley Place in 1890. Also Read – Heavy rain hits traffic, flightsLater, she opened her own school and named it as The Ruskin School in 1892. At the Sesame Club, she met Swami Vivekananda in London in 1895.The interest in Nivedita started increasing in England more than 100 years after her death in Darjeeling in 1911. A Blue Plaque was installed at her 21 High Street residence in November 2017. Chief Minister Mamata banerjee was present at the function, along with Swami Suhitanandaji, one of the vice-presidents of RKM. Also Read – Speeding Jaguar crashes into Merc, 2 B’deshi bystanders killedSarada Basu, a scholar on Nivedita, who is trying to contact the descendants of the Noble family, said Greenwood is now working on the book written by Muktipranaji.In Wimbledon museum, there is a temporary exhibition on her life and work. There are some books on Sister and two statues of Sister and Swami Vivekananda, which Mamata Banerjee had taken with her, have been kept there.The authorities of Wimbledon cemetery have agreed to install a half bust of Sister Nivedita beside her grave. She was cremated in Darjeeling and her ashes were sent to her house by Jagdish Chandra Bose.last_img read more

Savouring Delhis flavours

first_imgIt is that time of the year, when everyone is on an exploration drive to savour diverse flavours and often end their search with Delhi, as an unmatched destination for street food. To celebrate the tradition of food in the capital, Delhi Tourism came out with the concept of Dilli Ke Pakwaan in the year 2010 during the commonwealth games. Since then, the journey has been immensely successful and this time again fifth in series, Dilli ke Pakwaan 2014 is an authentic treat. Exclusive food items by nearly 40 participating vendors will make that perfect Dilli Ka Zaika. Also Read – ‘Playing Jojo was emotionally exhausting’In  a bid to give an organised space to street food vendors in the region and usher in a new wave of vibrancy in street food arena, Delhi Tourism in association with Govt. of Delhi had introduced this seven day street food saga in the capital. The festival was being held at Baba Kharak Singh Marg from December 24 and commenced on December 30 and celebrated Delhi’s love for street food. Christmas festivities are over but the feast continued at Dilli Ke Pakwaan with around 40 food stalls offering more than 60 different dishes. The cold weather did not stop people from stepping out of their homes and taste the flavours of Delhi.  Also Read – Leslie doing new comedy special with NetflixThe festival was not just about food but goes beyond the regular, with different cultural performances lined up every evening. From puppet shows, youth-centric musical performances, to magical Qawwali night and Rajasthani folk dance and music, there were numerous entertainment avenues. Visitor-friendly activities like ‘Art in Motion Cars’ encouraged people to paint on autorickshaws stationed at the venue. Dilli Ke Pakwaan  also offered numerous activities like recipe competition, food photography crash course, expert food talk, musical evenings, art and craft section along with others. Dilli Dil Se, recipe competition cum food talk  allowed people to freely drop their secret recipes and earn recognition, and pioneering expert from the industry will also be conducting talks on healthy food and special diets. Dilli Belly, a food photography workshop aimed to impart the skill of clicking beautiful photos using basic camera devices/ mobile phones.  In a special societal welfare opportunity at Dilli Ke Pakwaan, an NGO Antardrishti, along with its sister project Antarkranti was given a platform to showcase its exquisite products at the venue. Antardrishti works towards the benefit of visually impaired, while Antarkranti helps in rehabilitation and reformation of prison inmates. Another feature at the event was the Home for Food Tradition (HFT) movement that has taken upon itself the task of providing wholesome meals to people on the move. The idea is to bring the hygienic, wholesome, and health-oriented organic meals out of the confines of capital’s malls, five star hotels, and hi-dining joints, and democratise their availability on the streets of Delhi for common man at an affordable price through a network of specially designed network of trawlers. In other words, it aims to provide affordable meals, planned to take care of one’s nutritional requirements, while serving it hot in the streets of Delhi in a manner that is portable and reusable. In short, when it comes to planning a wholesome meal every day, Home for Food Traditions is fostering the care of a mother, with a touch of professionalism. This is happening in Todapur Village of Delhi under the supervision of Home for Food Tradition (HFT) to create Right to Eat Movement.last_img read more

Shantanu Sen turns saviour for hapless elderly couple

first_imgKolkata: In a rare gesture, Trinamool Congress MP Dr Shantanu Sen has assured to bear the medical expenses of an elderly couple in Sodepur.Unable to bear the medical expenses of his nonagenarian wife who is suffering from paralysis, Gourishankar Debnath (98) chose a unique way to collect money from people. Every morning, he used to go to Sodepur railway station and recite poems written by him. Some people listened to his poems and gave him money. A vernacular television channel had aired this report. Also Read – Speeding Jaguar crashes into Merc, 2 B’deshi bystanders killedAttracted by the report, Dr Sen went to the house of the elderly couple and assured to bear their medical expenses. The woman needs physiotherapy, while the couple need other medicines. Dr Sen examined the couple as well.Dr Sen said the physiotherapy session will start immediately and he will arrange the other medicines that are required. “As a medical practitioner, I consider this a rare opportunity to serve the couple. I have examined them and will do whatever is required,” he said.Debnath said they had no one to look after them and the money which they had in the bank had been exhausted. “I have no other option but to ask people for help. But who will help me? So I recited the proems which I have written and some people at Sodepur railway station who got interested, listened to my recitation and gave me some money. We are touched by Dr Sen’s gesture and pray for his success,” he maintained.last_img read more

Auto driver beats up couple arrested

first_imgKolkata: An auto-rickshaw driver has allegedly beaten up a couple who was riding on a scooter following a quarrel that took place between them near 8B bus stand in Jadavpur on Saturday morning.On the basis of the complaint lodged by the victims, the police have arrested the accused driver, identified as Uttam Rout. A local leader of the auto-rickshaw union told the police that the couple was riding their vehicle in a wrong route flouting the traffic norms when the accused auto-rickshaw driver tried to stop them. Also Read – Rain batters Kolkata, cripples normal lifeAs the accused demanded an explanation, the youth who was riding the scooter with a girl as the pillion, allegedly abused the auto driver. This led to a quarrel between the youth and the auto-rickshaw driver. A scuffle soon broke out between them. The victims, on the other hand, alleged that the accused auto-rickshaw driver stepped out of the vehicle and started beating up the youth. He had received injuries on his face as well. When the girl came to his rescue, she was also roughed up by the accused. Also Read – Speeding Jaguar crashes into Mercedes car in Kolkata, 2 pedestrians killedThe couple told the police that other auto-rickshaw drivers gathered at the spot and started hurling abuses at them. The incident caused huge chaos at the 8B bus stand area in the morning following the incident. The couple also told the police that they did not flout any traffic norms and were riding the scooter properly. According to the local sources, none of the duo had been wearing a helmet at the time of the incident. They claimed that the auto-driver suddenly stopped their scooter and started misbehaving with them. After being informed, the police reached the spot and held the youth for interrogation. They have arrested the auto-rickshaw driver on the basis of a specific complaint. Police have also started a probe in this regard.last_img read more

Winter wanes mercury to climb higher in city for next few days

first_imgKolkata: The temperature in the city may go up further in the next three days, predicted the Regional Meteorological Centre at Alipore.The Met office said on Tuesday that the mercury, which has already been soaring in all the South Bengal districts, will continue to do so in the next couple of days. The cold wave condition, which was prevailing in South Bengal for the past two weeks, has improved. The situation is under control in most of the districts in South Bengal. The lowest temperature in the city on Tuesday rose to 13.8 degree Celsius, while the highest temperature of the day remained at 27.8 degree Celsius, which is three degrees above normal. Also Read – 3 injured, flight, train services hit as rains lash BengalFor the past three days, the temperature was hovering over 12 degree Celsius. The temperature is expected to marginally rise in the next three days. The temperature had started dipping in the city and its adjoining districts before Christmas. The temperature went down to 11.5 degree Celsius on December 27. The weather office, however, has not clearly mentioned if the winter chill is going to go away from the city completely. According to a weather official, the occasional rise and fall in the temperature is quite common during this period. Also Read – Speeding Jaguar crashes into Mercedes car in Kolkata, 2 pedestrians killedThe people in North Bengal districts, however, continue to feel a cold shiver as the temperature in some places remained below 10 degree Celsius. A senior weather official on Tuesday said that a cold wave condition is still prevailing in North Bengal districts and the situation will continue in the next few days. People in South Bengal districts will, however, get some respite from the cold wave condition, during which the city witnessed the temperature drop to nearly 10 degree Celsius. Meanwhile, it may be mentioned that the tropical cyclone ‘Pabuk’ that had hit Andaman Sea two days ago after originating over the Gulf of Thailand, has turned into a low pressure zone in the region, bringing some more rainfall in Andaman Island.last_img read more

Mob attacks man in Cooch Behar cops rescue him

first_imgKolkata: Local residents brutally beat up a man suspecting him to be a cattle thief on Saturday night at Kotwali in Cooch Behar. Later, police rescued the injured person and rushed him to Cooch Behar Medical College and Hospital.Since the past few months, criminals were stealing cattle at Kotwali. Despite security measures, none could be arrested. Late on Saturday night, some local residents noticed a person roaming aimlessly at Lankabar on Kalighat road in Cooch Behar. On suspicion, some of them detained him and asked what he was doing there at that time. As he could not give them a reasonable answer, local residents started beating him. Meanwhile, Kotwali police station was informed about the incident. Upon getting information, the officers rushed to the spot to rescue the man. When police officers tried to rescue him, local residents opposed the police for taking necessary action. Even, police personnel who went to the spot to rescue the man were detained later. A distress message was sent to the headquarters. Later, a large force led by senior officials went to the spot and managed to rescue the injured man along with police personnel. Till Sunday night, the police could not establish the man’s identity as officers could not talk to him because of his unstable health condition.last_img read more