Udupi tops, DK slips to fourth, Yadgir poorest: Check district wise performance in SSLC 2018

The current physical distancing guidelines provided by the World Health Organisation (WHO) and by the US Centers for Disease Control and Prevention (CDC) may not be adequate to curb the coronavirus spread, according to a research which says the gas cloud from a cough or sneeze may help virus particles travel up to 8 metres. The research, published in the Journal of the American Medical Association, noted that the the current guidelines issued by the WHO and CDC are based on outdated models from the 1930s of how gas clouds from a cough, sneeze, or exhalation spread.

Study author, MIT associate professor Lydia Bourouiba, warned that droplets of all sizes can travel 23 to 27 feet, or 7-8 metres, carrying the pathogen.

According to Bourouiba, the current guidelines are based on "arbitrary" assumptions of droplet size, "overly simplified", and "may limit the effectiveness of the proposed interventions" against the deadly pandemic.

 She explained that the old guidelines assume droplets to be one of two categories, small or large, taking short-range semi-ballistic trajectories when a person exhales, coughs, or sneezes.

However based on more recent discoveries, the MIT scientist said, sneezes and coughs are made of a puff cloud that carries ambient air, transporting within it clusters of droplets of a wide range of sizes.

Bourouiba warned that this puff cloud, with ambient air entrapped in it, can offer the droplets moisture and warmth that can prevent it from evaporation in the outer environment.

"The locally moist and warm atmosphere within the turbulent gas cloud allows the contained droplets to evade evaporation for much longer than occurs with isolated droplets," she said.

"Under these conditions, the lifetime of a droplet could be considerably extended by a factor of up to 1000, from a fraction of a second to minutes," the researcher explained in the study.

The MIT scientist, who has researched the dynamics of coughs and sneezes for years, added that these droplets settle along the trajectory of a cough or sneeze contaminating surfaces, with their residues staying suspended in the air for hours.

"Even when maximum containment policies were enforced, the rapid international spread of COVID-19 suggests that using arbitrary droplet size cutoffs may not accurately reflect what actually occurs with respiratory emissions, possibly contributing to the ineffectiveness of some procedures used to limit the spread of respiratory disease," Bourouiba wrote in the study

New Delhi, May 29: Opining that there is no harm in importing ideas from abroad Swadeshi Jagran Manch, an affiliate of Rashtriya Swayamsevak Sangh, has suggested that India should take a cue from Pakistan and turn the “locust threat” into “chicken feed.

In an interview, Ashwani Mahajan, national co-convener of Swadeshi Jagran Manch (SJM) said: “I saw an article which shows that Pakistan has turned the locust threat into an opportunity by converting it into chicken feed”

“If there is a good idea originating from anywhere, we should be open to exploring such ideas. We should adopt good ideas. There is no harm in that,” he added.

He also shared the article on Twitter and wrote: “Pakistan turns locust threat into chicken feed. Need to understand the idea and replicate it in India.”

The article stated “an innovative pilot project in Pakistan’s Okara district offers a sustainable solution in which farmers earn money by trapping locusts that are turned into high-protein chicken feed by animal feed mills”.

“It was the brainchild of Muhammad Khurshid, a civil servant in the Ministry of National Food Security and Research, and Johar Ali, a bio-technologist from the Pakistan Agricultural Research Council,” according to the article.

Both Pakistan and India have been hit by locust attacks. These are desert locusts, which is one of the 12 species of short-horned grasshoppers. Swarms can comprise billions and travel up to 130 km in a day.

India has been battling the locust attacks with moderate success since December. However, the onset of monsoon could bring more trouble.

Bengaluru, Jul 1: Karnataka Primary and Secondary Education Minister S Suresh Kumar on Wednesday played down reports about confusion regarding valuation of Second Pre- University and the Secondary School Leaving Certificate exam papers.

"Creating confusion has become a habit. There was confusion before the exam, during the exam and now confusion about the valuation of the exam papers," Kumar told reporters in Ramanagara when asked about the confusion over the valuation of answer sheets.

He had gone there to inspect a few centres where the SSLC or the 10th standard exams are underway.

The minister reminded people not to speak about the abilities of the students with contempt.

"Our students have toiled hard and are enthusiastically appearing for the examination. They are eligible for the marks they will score. So we should not speak about our children with disrespect," Kumar said.

The Education Minister said he had spoken to many leaders including former chief ministers Siddaramaiah and H D Kumaraswamy on conducting the examinations.

"Kumaraswamy had insisted on postponing the examination. I personally spoke to him and apprised him about the steps taken by us. I told him that we will work with more sincerity to ensure the safety of the children," Kumar said.

The SSLC exam was scheduled to take place from March 27 but due to the coronavirus-induced lockdown, it was postponed.

While the CBSE and a few other states either decided to give marks based on the students' performance in the previous examinations such as quarterly and half-yearly exams or gave general promotion to the students, Karnataka went ahead to hold the exam.

According to Karnataka Secondary Education Examination Board officials, around 8.5 lakh students have enrolled this year for the SSLC examination.

The exams are being held at 2,879 exam centres across the state.

Prior to the SSLC examination, the last exam of the Second PUC was also conducted on June 18, which was also put on hold due to the lockdown.