The scientists assessed the ability of common fabrics, alone or in combination, to filter out aerosols similar in size to respiratory droplets.
Four years after it broke many hearts, Indian Space Research Organisation's Chandrayaan is all set to soar towards the moon in its third expedition on Friday in an attempt to put the country in an elite club of nations that accomplished lunar missions with a soft landing.
'You declare a date, time and place for the landing two months in advance and exactly at that moment, it touched on the moon.'
The entire process being autonomous when the lander has to fire its engines at the right times and altitudes, use the right amount of fuel, and scan of the lunar surface for any obstacles or hills or craters before finally touching down.
Chandrayaan 3 follows the Chandrayaan 2 mission which did not achieve the desired soft landing on the surface of the moon in 2019, disappointing the scientists.
Dr Rohit Mistry suggests five dental hygiene habits young mothers should start their babies/kids.
Tooth pain and other orofacial pain can be a symptom of various conditions and can provide cues about the underlying issue, alerts Dr Srishti Tody.
French scientists have revived a 48,500-year-old zombie virus buried under a frozen lake in Russia until now!
A person who returned to Kerala from abroad and was hospitalised after showing signs of monkeypox tested positive for the disease, state Health Minister Veena George said on Thursday.
The researchers noted that while COVID-19 and influenza are both severe respiratory viruses, they appeared to affect cardiac tissue very differently.
From these past studies, the scientists said both the aerodynamics of the droplets, and their heat and mass exchange process with the environment can determine the effectiveness of virus prohttps://www.rediff.com/news/report/pix-how-indians-are-maintaining-social-distance/20200326.htmpagation.
La Nina, construction worsen air quality; spike in respiratory ailments.
On Sunday, August 28, a series of controlled explosions reduced the 100-metre tall Supertech twin towers structures in Noida to a huge pile of rubble.
As miniaturisation gets even more popular, the demand for professionals who master the underlying principles that enable the process is expected to rise exponentially.
The study also noted that the currently followed physical distancing guidelines are inadequate in curbing the transmission of COVID-19.
With the confirmation of the Standard Model or perhaps a modification of it, we have a reason to remain hopeful that maybe we are a step closer towards realising the holy grail of physics, says Vidya Ramanathan
Monkeypox is a rare zoonotic disease that is caused by infection with monkeypox virus. Monkeypox virus belongs to the family Poxviridae, which also includes the viruses causing smallpox and cowpox disease
According to the Graded Response Action Plan (GRAP), the air quality is considered to be in the emergency category if the PM2.5 and PM10 levels continue to be above 300 micrograms per cubic metre and 500 micrograms per cubic metre respectively for 48 hours or more.
I suggest we build a Vigyan Mandir (Temple of Science) with the ambience of a place of worship, so that it becomes a destination for pilgrims. We should embed on its walls bronze plaques describing each scientist mentioned here along with about a dozen of our ancient mathematicians, recommends Professor Kalyan Singhal, historian of science and technology.
ISRO will now conduct further testing of VELC and its eventual integration with the Aditya-L1 spacecraft, it said in a release.
Physical distancing of two metres - about six and a half feet - may not be enough to sufficiently prevent transmission of virus-carrying airborne aerosols indoors, says a study.
Acentral panel directed authorities to ban the plying of 4-wheeled diesel LMVs in Delhi and adjoining NCR districts and the entry of trucks into the capital.
The PSInSAR satellite technique used to observe the gradual sinking of Uttarakhand's Joshimath town is a powerful remote sensing tool capable of measuring and monitoring displacements in the Earth's surface over time.
In the WHO South-East Asia region, four cases of monkeypox have been reported, three from India and one from Thailand.
In their review of studies, published in the journal Aerosol and Air Quality Research, the scientists specifically drew focus on relative humidity, which is a measure of water vapour in the air compared to the total saturation of vapour that can exist in the air at its current temperature.
Prime Minister Narendra Modi on Tuesday dedicated to the nation the Mahakal Lok corridor at Ujjain in Madhya Pradesh.
If you are not following the right mask hygiene, you could be suffering from 'mask mouth'. Here's how you can avoid this problem.
He said it was an infringement of copyright but did not threaten legal action.
The increase in stubble burning has kicked off a political slugfest, with Union Environment Minister Bhupender Yadav on Wednesday saying that there had been a 19 per cent rise in farm fires over 2021 in Punjab and that the Aam Aadmi Party had turned the national capital into a gas chamber.
While Emerald Court would take one more day to be cleaned, the work at ATS Village could extend up to seven days due to more rubble and dust on the premises, according to officials.
The report Air Quality and Health in Cities combined ground-based air quality data with satellites and models to produce air quality estimates for cities around the world.
According to senior IMD scientist Kuldeep Srivastava, clear sky or absence of clouds allows sun rays to reach the ground, warming up the air close to the ground which lifts up and clears the pollutants.
Delhi Chief Minister Arvind Kejriwal announced that primary schools will be closed from Saturday in view of spike in pollution levels in the national capital.
Dr Karishma Jaradi explains how excessive consumption of tea, coffee and lemon can be detrimental to healthy teeth.
According to forecasting agencies, the city is set to record its best air quality for the day after Diwali since 2015 on Tuesday.
Ensure you drink about 6-to-8-glasses of water every day to escape dryness of the mouth.
On Sunday, too, a drizzle resulted in an increase in humidity, triggering a massive pollution spike.
The central government's Air Quality Early Warning System for Delhi said a "significant improvement in air quality is not likely" owing to slow wind speed, particularly during night time, and contribution from farm fires.
Experts said while meteorological conditions were "moderately" favourable for dispersion of pollutants, a "very high" number of farm fires in Punjab was the primary reason for "severe" air quality.
The research suggests that due to strenuous exercise, elite athletes are more likely to inhale virus particles and direct them to the lower areas of the lung.
© 2026 Rediff.com - Advertise with us - Disclaimer - Privacy Policy - Sitemap - Feedback - About us - Terms of use - Grievances