Alva's Pragathi' campus placement drive from Apr 9

Mangaluru, May 20: In a gut-wrenching tragedy, a Class 10 student who was preparing for the final examinations drowned in Adyapady dam on the outskirts of the city yesterday.

The victim is Mallik, 17, a resident of Mulur village in Gurpur. The tragedy occurred when Mallik along with some others had come to the dam to catch fish.

According to the police, he accidentally slipped into the waters and drowned. His body was recovered later. 

Jurisdictional Bajpe police have registered a case of unnatural death and investigations are underway.

Bengaluru, Jun 18: The Karnataka police has arrested a German national wanted for kidnapping and causing bodily harm to a person in his home country, an official said on Wednesday. The person was also found to be overstaying on an expired visa, which police said that it appeared that the visa had been tampered with to look more current.

"On receipt of credible information by the CID Interpol Division officers, the Red Corner Notice subject, the German national Alexander Bruno Wehnelt, was traced at Hulimangala village," a police official told media persons.

Hulimangala is on the outskirts of Bengaluru city.

Alexander, 55, escaped from Germany and took shelter in Bengaluru.

The Interpol Division of CBI NCB (Central Bureau of Intelligence, Narcotics Control Bureau) in New Delhi had communicated to the Interpol liaison officer in Karnataka's Criminal Investigation Department (CID) about Alexander, directing extensive search measures to trace the criminal at large.

The Narcotics Control Bureau of Wiesbaden in Germany was on the hunt for Wehnelt for the crimes he committed in 2015, and have finally found him five years later.

"A special team of officers was constituted by the CID - Interpol division under the supervision of ADGP (Additional Director General of Police) B. Dayananda and the Interpol liaison officer and efforts were made to trace the subject," said the official.

On Monday, the police received credible information leading to his arrest.

"It was learnt that his visa had expired in 2016 and he tried to show a visa which was issued in December 2019 which had expired on Saturday, June 13," said the official.

Prima facie, it appeared that Alexander had tampered with his visa and the police are probing on that front as well.

He was handed over to Hebbagodi Police Station in Bengaluru Urban, for his overstay and a criminal case has been registered against him, under the Foreigners Act.

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