Bengaluru, Sept 16: The Akhil Bharatiya Vidyarthi Parishad (ABVP) has demanded action against St Joseph's College for sending its students in the National Cadet Corps (NCC) uniform to attend the 'Resistance Convention' against the murder of journalist Gauri Lankesh in Bengaluru on September 12.
Jayaprakash, of the BJP's student wing, made the demand in a memorandum to the vice-chancellor of Bangalore University and the director of the Department of Collegiate Education.
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of the American Medical Association, noted that the the current guidelines issued by the WHO and CDC are based on outdated models from the 1930s of how gas clouds from a cough, sneeze, or exhalation spread.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
Bengaluru, Jul 22: A total of 4,764 new COVID-19 cases and 55 deaths were reported in Karnataka in the last 24 hours.
Out of the new cases, 2,050 cases were reported in Bengaluru on Wednesday.
The total number of active cases stands at 47,069, said the state Health Department.
Death toll rises to 1,519 in the state.
Mangaluru, Jun 15: A 69-year-old man was murdered by his two sons at Muggaguthu in Karaya village under the limits of Uppinangady police station in Dakshina Kannada district.
According to Police, accused Monappa Poojary (34) and Naveen (28) assaulted Dharnappa Poojary with sickle and wooden logs on Sunday night, leading to his on-the-spot death.
A family discord led to the murder, police said, adding that a case has been registered at Uppinangady police station and investigation was in progress.
Comments
Where were these Pillas when Sri Ravishankar used Army Jawans as his domestic servants for his PRIVATE "ART OF LIVING" marketing function, he even defied Environment & Pollution Board directions, absconded without paying fee and penalties. They should have barked then.
Add new comment