CBSE Denies Class 12 Accountancy Paper Leak, Says All Seals Found Intact

Thiruvananthapuram, Mar 31: Kerala Chief

Minister Pinarayi Vijayan on Tuesday said the government has collected the details of those who took part from the state in recent religious congregations in Nizamuddin and Malaysia and it needs to be examined if they have any health issues.

"Police have already made detailed examination in this regard. Thelist of participants have been given through respectivedistrictcollectors. Necessary precautions will be made in the concerned districts in this regard," Vijayan told reporters here.

The government has the exact number of participants and thedetails of the districts they are hailing from, he said.

Meanwhile, Pathananthitta police said they have identified 6 persons in the district in connection with the Nizamuddin congregation.

"Three persons had taken part in the congregation, of them one hadalready died. One person is in quarantine in the district while theother is located now in Thiruvananrhapuram," a senior police officialtold PTI.

The others are not participants but had travelled to Delhi along with them, he said.

In the nearby Alappuzha district, three persons have been identified in connection with the congregation, police said.

"They have been in quarantine and under the surveillance of thehealth department since they have reached back the state from Delhi," another official said.

Several people, who had attended the religious congregation at Nizamuddin in the national capital are suspected to be having symptoms of Covid19, even as at least 24 have tested positive.

Jun 26: The Supreme Court on Friday permitted the Centre and the CBSE to cancel the remaining board examinations due to the COVID-19 pandemic and gave the go-ahead for the scheme to award marks to students for the cancelled papers scheduled to be held in July.

A bench of Justices A M Khanwilkar, Dinesh Maheshwari and Sanjiv Khanna permitted the CBSE to issue a notification for the cancellation of the examinations.

Solicitor General Tushar Mehta, appearing for the Centre and the CBSE, said that the assessment scheme would consider marks scored by students in the last three papers of the board exams.

Both CBSE and ICSE told the top court that the results of the class X and XII board exams can be declared by the middle of July.

The top court was hearing pleas seeking relief, including scrapping of remaining exams of Class 12 scheduled from July 1 to 15, in view of increasing number of COVID-19 cases. Similar relief was sought by the ICSE Board also.

London, May 20: The current physical distancing guidelines of 6 feet may be insufficient to prevent COVID-19 transmission, according to a study which says a mild cough in low wind speeds can propel saliva droplets by as much as 18 feet.

Researchers, including those from the University of Nicosia in Cyprus, said a good baseline for studying the airborne transmission of viruses, like the one behind the COVID-19 pandemic, is a deeper understanding of how particles travel through the air when people cough.

In the study, published in the journal Physics of Fluids, they said even with a slight breeze of about four kilometres per hour (kph), saliva travels 18 feet in 5 seconds.

"The droplet cloud will affect both adults and children of different heights," said study co-author Dimitris Drikakis from the University of Nicosia.

According to the scientists, shorter adults and children could be at higher risk if they are located within the trajectory of the saliva droplets.

They said saliva is a complex fluid, which travels suspended in a bulk of surrounding air released by a cough, adding that many factors affect how saliva droplets travel in the air.

These factors, the study noted, include the size and number of droplets, how they interact with one another and the surrounding air as they disperse and evaporate, how heat and mass are transferred, and the humidity and temperature of the surrounding air.

In the study, the scientists created a computer simulation to examine the state of every saliva droplet moving through the air in front of a coughing person.

The model considered the effects of humidity, dispersion force, interactions of molecules of saliva and air, and how the droplets change from liquid to vapour and evaporate, along with a grid representing the space in front of a coughing person.

Each grid, the scientists said, holds information about variables like pressure, fluid velocity, temperature, droplet mass, and droplet position.

The study analysed the fates of nearly 1,008 simulated saliva droplets, and solved as many as 3.7 million equations.

"The purpose of the mathematical modelling and simulation is to take into account all the real coupling or interaction mechanisms that may take place between the main bulk fluid flow and the saliva droplets, and between the saliva droplets themselves," explained Talib Dbouk, another co-author of the study.

However, the researchers added that further studies are needed to determine the effect of ground surface temperature on the behaviour of saliva in air.

They also believe that indoor environments, especially ones with air conditioning, may significantly affect the particle movement through air.

This work is important since it concerns safety distance guidelines, and advances the understanding of the transmission of airborne diseases, Drikakis said.