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Showing posts with label science. Show all posts
Showing posts with label science. Show all posts

Thursday, 4 June 2020

07:11

Five tips on how to live with novel coronavirus

Five tips on how to live with novel coronavirus
Posted On: 02 JUN 2020 10:49AM by PIB Delhi
After seventy days of lockdown, the unlock 1.0 is put into action. Officially designated lockdown 5.0, from June 1, 2020, the economy and ordinary life are returning to normalcy in a controlled and phased manner. This is the beginning of a new normal. It is going to be a long haul. Experts and officials are suggesting that ‘we must learn to live with the virus’. With vaccine still months away, we need to live in a new normal. Speaking  to India Science Wire, Prof. K Vijay Raghavan, Principal Scientific Advisor to the Government of India, gave five tips to ‘living with the virus’. 
“Either we must change the virus, or we must change ourselves; changing the virus is going to take time,” says Prof. Vijay Raghavan. Research and development of drugs and vaccine are underway, but for them to be available for broader use, after proper clinical trials, is going to take time. Producing the drugs and vaccine for everyone is also time-consuming. Meanwhile, we can change ourselves to face the pandemic.
Here are the five tips from Prof. Raghavan:
1.Wear a mask when you step out of the houses
Recent studies have found that when a person speaks, about 1000 tiny droplets of saliva comes out. If that person happens to be infected with novel coronavirus, then each of these droplets will carry thousands of germs. Large droplets will fall off the ground, usually within one-metre distance. However, the plum of tiny droplets can float in the air for a longer time, mainly if the area is not well ventilated. Many people who are infected by the virus do not show any symptoms. Therefore, they may not even be aware that they are affected. Wearing a mask protects not only us but others as well, if we are infected. “We have prepared a handbook on manufacturing homemade mask, which one can use to make their own face cover,” says Prof. Raghavan.
2. Practise vigilant hand hygiene
An analysis of  75,465 COVID-19 cases in China by a WHO-led study shows that novel coronavirus is primarily transmitted between people through respiratory droplets and contact routes. Thus, the COVID-19 virus can be transmitted when one comes into direct contact with infected people. Or when we touch surfaces in the immediate environment or objects used by the infected person (e.g., door handle and washroom tap). Our normal urge is to reach our face. When we wash our hands thoroughly with soap for at least thirty seconds, the virus, if any, on our hands is destroyed. “There are suggestions that the virus may also be transmitted by faecal and oral routes. Hence it is better to wash the hands and legs,” says Prof. Raghavan.
3. Maintain social distance
Most likely, the infection happens through direct contact or inhaling the droplets shed by an infected person. Droplets in usual conditions travel about a metre from the infected person.  Keeping a distance of one metre from one another in markets, offices, and public transport would greatly help. “Young people can get infected without showing symptoms, and they can infect the elderly. Hence, we need to take special care to maintain physical distancing, particularly with the vulnerable like elderly, those who are ill in multiple ways,” says Prof. Raghavan.
4. Test and tracking
“If someone turns out to be COVID-19 positive, then one has to go back in time and identify proximal contacts of that person and identify them. We must test them,” says Prof. Raghavan. Only an infected person can transmit the virus to others or contaminate a surface and spread the virus. If most of the infected persons are identified, then controlling the transmission of the virus becomes easy.
5. Isolation
“The people who have been identified as positive cases should be isolated,” says Prof. Raghavan. Once isolated, the infected person can receive proper medical attention. Further, as they remain isolated, an infected person cannot spread the virus to others. The tentacles of the infection can be cut.
 “If one can do this with high speed the last one and follow all the others, then we can have a semblance of a normal life while we wait to do something for drugs and vaccine. If we don’t do any of these things and if we slip up on any one of these, then we will have a problem,” said Prof. Raghavan.
He also pointed out that the conditions are different in India as compared to those in western countries. Physical distancing becomes difficult as many people live in a densely populated area like Dharavi in Mumbai. Further, in India, most households have three generations living together. “This may make the implementation of physical distancing difficult. So, we need to have some innovative solutions to deal with these specific problems,” says Prof. K Vijay Raghavan.
“There are multiple levels of responsibility to decide what to do. Most important of all are communication and putting the message in that communication into action by all of us” Prof K Vijay Raghavan said.
The office of the Principal Scientific Advisor to the Government of India has developed guidelines for hygiene and sanitation in densely populated areas and a manual on homemade protective covers for face and mouth. These are available for free download in many Indian languages in the website http://psa.gov.in/information-related-covid-19.



Sunday, 19 April 2020

09:49

High Technical Quality Face masks to restrict Entry of Infections-COVID 19

High Technical Quality Face masks to restrict Entry of Infections-COVID 19
Ministry of Science & Technology
Masks that use electrostatics of materials to protect healthy individuals from COVID 19
CeNS develops TriboE masks that can hold electric charges to restrict the entry of infections but interestingly, without any external power
Posted On: 18 APR 2020 6:19PM by PIB Delhi
Face masks used by frontline healthcare professionals, which are of high technical quality, need special expertise for production, while a simple face mask that can contain the spread of the Corona virus is advised for the general public.
Such a mask, though rudimentary in its action for containing the viral diffusion across the fabric layer, is expected to reduce the transmission of micro-droplets that linger in the air even during a simple conversation, let alone sneezing. Simple, often, homemade ones are advised for healthy individuals rather than those meant for health workers as there is limited supply of the latter. If only the choice of the fabric can be made intelligently, the mask can serve the purpose more efficiently.
A team of researchers at the Centre for Nano and Soft Matter Sciences (CeNS), Bangalore, an autonomous institute of the Department of Science and Technology (DST), have come up with a recipe for making face masks, termed as TriboE Mask, that can hold electric charges to restrict the entry of infections but interestingly, without any external power.
The innovation by Dr. PralaySantra, Dr. Ashutosh Singh, and Prof. Giridhar U. Kulkarni relies on electrostatics. When two non-conducting layers are rubbed against each other, the layers develop positive and negative charges instantly and continue to hold the charges for some time. They have used this electric field, quite strong at proximity, to deactivate or possibly even kill the germs.
“We have borrowed ideas from physics textbooks on triboelectricity; something kids enjoy playing with. When used in the context of a face mask, the idea can translate into a product, realisable by the end-user without the need of industry developing or manufacturing it. The mask is inexpensive and doable by anyone!” Prof. Kulkarni said. He added that tests on these masks are being performed, particularly in the context of COVID 19.
Professor Ashutosh Sharma, Secretary, DST, said, "It is interesting that several new and useful COVID-10 solutions have emerged by creative applications of basic principles of chemistry, physics, materials, and bio-sciences, often by stitching together of simple insights to provide an interdisciplinary solution. The mask proposed here is a good example of such a creative process that adds huge value by a simple design."
The mask is three-layered –a layer of nylon cloth sandwiched between polypropylene layers, the latter sourced from commonly used non woven grocery bags. In place of nylon, silk fabric from an old saree or shawl may also be cut and used. When layers are rubbed against each other, the outer layers develop negative charges, while nylon will hold the positive charges. This will act as double electric wall protection against the infectious entities crossing. As the mask is made out of commonly available fabrics, it can be washed just like any other cloth and can be reused. At this stage,the mask is, however, not recommended to healthcare professionals and patients.

TriboE mask comprising of polypropylene layers on the outside and nylon layer in between. When the layers are rubbed against each other, static electricity is produced, which is expected to restrict the possible transmission of infections.
A video clip explaining the principle, fabrication, and usage of the mask is given here:
https://youtu.be/lIOKwnVlYXw 
[For more details, please contact: Dr. Pralay K. Santra (Email: psantra@cens.res.in; pralay.santra@gmail.com Mob: 9483271510), Dr. Ashutosh Singh (Email: aksingh@cens.res.in; ashuvishen@gmail.com) and Prof. Giridhar U. Kulkarni (Email: guk@cens.res.in; gukulk@gmail.com)]

Source:PIBNEWS


Sunday, 9 July 2017

10:29

Running of "Science Express" Exhibition Special train over Konkan Railway

Running of "Science Express" Exhibition Special train over Konkan Railway
07-July-2017
Ministry  of  Railways  has decided to run  "Science  Express" ( an  exhibition  special train) in  favour   of Ministry  of Science and Techonology over Konkan Railway.
Science Express is an innovative mobile science exhibition of Department of Science & Technology (DST), Govt. of India, mounted on a 16 coach AC train. With the objective of arousing interest of the young people in the field of science and technology, the exhibition on wheels – Science Express, was launched  on October 30, 2007. It is a mega outreach programme of DST, Govt. of India and is being managed by Vikram A Sarabhai Community Science Centre (VASCSC).
The exhibition will be opened at Madgaon station from 11/07/2017 to 13/07/2017 and at Ratnagiri station from 14/07/2017 to 17/07/2017. Exhibition Timing will be 10:00 hrs to 17:00 Hrs.
Konkan Railway appealed to all to avail the benefit from this service.





Thursday, 22 October 2015

08:46

Science Express Climate Action Express (SECAS) enters Udaipur

Science Express Climate Action Express (SECAS) enters Udaipur

Udaipur (UDZ): After 7 successful tours across India, Science Express with the theme ‘Climate Change’ has entered Udaipur that traveled from Jodhpur. Known as ‘Science Express Climate Action Special’, it is an innovative mobile science exhibition mounted on a 16 coach AC train, custom built for Dept of Science & Technology by Indian Railways.

It is a unique collaborative initiative of Department of Science & Technology, Ministry of Environment, Forest & Climate Change (MoEFCC), and Ministry of Railway, Government of India. The SECAS in its current phase is scheduled to travel across the country for about 7 months, halting at 64 locations in 20 States, covering 19,800 km. The exhibition will convey a strong message about Climate Change and will also be a good opportunity to generate dialogue and discussion.

Of the 16 coaches of SECAS, exhibition in 8 coaches developed by Centre for Environment Education (CEE) on behalf of MoEFCC, is exclusively devoted to information, case studies and material related to various aspect of Climate change, the underlying science, impacts, adaptation activities, mitigation solutions and policy approaches in a manner that is easy to understand and interesting for not just school students but also the masses.

At each halt of SECAS, activities are planned to engage visitors across different age groups to reinforce its message. An exciting and much sought-after Outreach Programme is also conducted in local schools/institutions along with activities on the railway platforms. In addition, informative take-away material is made available for wider distribution amongst schools and visitors.

The express has entered Rana Pratap Railway Station’s platform no. 1 and will stay for the next 5 days. The timing of the exhibition is from 10 AM to 5 PM and visitors are not allowed to carry mobiles, camera, bag, matchsticks, cigarette, tobacco products, water bottles etc. inside the coaches.

For visit to the exhibition or any queries, please send an email to sciencexpress@gmail.com or contact the team aboard the train on 09428405407. School students can participate in the JOS Lab in small batches of up to 20 students, by prior registration.

Thursday, 30 July 2015

07:56

Another Earth like planet ,oider bigger cousin in habitable zone

NASA's Kepler mission identifies new bigger Earth-like planet

Washington DC, July 24 (ANI): NASA's Kepler mission has found Earth's older bigger cousin in the "habitable zone" around a sun-like star.

This discovery and the introduction of 11 other new small habitable zone candidate planets mark another milestone in the journey to finding another "Earth."

The newly discovered Kepler-452b is the smallest planet to date discovered orbiting in the habitable zone. The confirmation of Kepler-452b brings the total number of confirmed planets to 1,030.

On the 20th anniversary year of the discovery that proved other suns host planets, the Kepler exoplanet explorer has discovered a planet and star which most closely resemble the Earth and our Sun, said John Grunsfeld, associate administrator of NASA's Science Mission Directorate at the agency's headquarters in Washington.

Kepler-452b is 60 percent larger in diameter than Earth and is considered a super-Earth-size planet. While its mass and composition are not yet determined, previous research suggests that planets the size of Kepler-452b have a good chance of being rocky.

While Kepler-452b is larger than Earth, its 385-day orbit is only 5 percent longer. The planet is 5 percent farther from its parent star Kepler-452 than Earth is from the Sun.

Kepler-452 is 6 billion years old, 1.5 billion years older than our sun, has the same temperature, and is 20 percent brighter and has a diameter 10 percent larger.

Jon Jenkins, who led the team that discovered Kepler-452b, said that Kepler-452b could be thought of as an older, bigger cousin to Earth, providing an opportunity to understand and reflect upon Earth's evolving environment.

It's awe-inspiring to consider that this planet had spent 6 billion years in the habitable zone of its star; longer than Earth. That's substantial opportunity for life to arise, should all the necessary ingredients and conditions for life exist on this planet, he added.

The research will soon be published in The Astronomical Journal. (ANI)

Source :ANI