‘Army killed this 12-year-old girl when she was giving water to an injured relative’

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.

New Delhi, Jan 16: In trouble brewing for the Gautam Adani-led M/S Adani Enterprises, the Central Bureau of Investigation (CBI) on Thursday said that it has registered a case against former officials of the National Co-operative Consumer Federation (NCCF) and others over alleged irregularities in supply of coal to the Andhra Pradesh Power Generation Corporation (APGENCO) in 2010.

The CBI in its FIR has named Virendra Singh, the then Chairman of the NCCF, G P Gupta, the then MD of the NCCF, S C Singhal, the then Senior Advisor of NCCF, Adani Enterprises Ltd and other unknown public servants and others for criminal conspiracy, cheating and criminal misconduct by public servants.

According to CBI, the case was filed on Wednesday after the preliminary enquiry revealed the crime by the officials named in the FIR and the Adani Enterprises was found to be true.

The FIR alleged that on June 26, 2010, APGENCO floated a tender enquiry for supply of six lakh metric tonnes of imported coal "on free on rail destination" basis to Dr Narla Tata Rao Thermal Station (NTTPS), Vijaywada and Rayalasaleema Thermal Power Plant (RTTP), Kadapa, Andhra Pradesh/RTPP via Kakinada-Vizag-Chennai-Krishnapatnam or any other ports

The same was forwarded by the Chief Engineer, APGENCO to seven PSUs -- PEC Limited, STC Limited, MSTC Limited, NCCF, MMTC, Coal India Limited and SCCL Limited.

The FIR alleged that during the probe, the Adani Enterprises used a proxy company to get the supply contract. It said, "NCCF received bids from six companies -- Adani Enterprises Ltd, Maheshwari Brothers Coal Limited (MBCL), Vyom Trade Links Pvt. Ltd, Swarana Projects Pvt. Ltd, Gupta Coal India Ltd and Kyori Oremen Ltd.

During investigation it was found that Gupta Coal India Ltd had quoted the NCCF margin of 11.3 percent, while the MBCL quoted the margin of 2.25 percent and rest did not quote any margin to the NCCF.

The FIR said the quotes of the Gupta Coal India Ltd, Kyori Oremen Ltd and Swarana Projects Pvt. Ltd were rejected by the NCCF as they were not found to be fulfilling the tender conditions.

"Post tender negotiation was done by senior officials of NCCF to give undue favour to Adani Enterprises Ltd despite it not qualifing the tender (terms)," the FIR said, adding instead of cancelling the bid of Adani Enterprise Ltd, senior management of NCCF conveyed the offer margin to the company through one of its representative -- Munish Sehgal, who was sitting in the NCCF head office. It is prima facie evident that when the bids were being processed at NCCF head office in Delhi, a representative of Adani Enterprises Ltd. was informed regarding their imminent rejection due to non-submission of NCCF margin and also that MBCL was eligible bidder quoted 2.25 percent margin," it alleged.

The CBI in its FIR, further alleged that Adani Enterprises Ltd. had given an unsecured loan of Rs 16.81 crore to Vyom Trade Links Ltd in 2008-09. "And further it was revealed that the bank guarantees of the Adani Enterprises Ltd. and Vyom Trade Links Ltd. were issues by the same branch of the State Bank of India and at the same time," it said.

"It was clear that Adani Enterprises Ltd. presented Vyom Trade Links Ltd. as a proxy company in this particular tender and Vyom Trade Links Ltd. later withdrew its offer on flimsy ground," the CBI FIR said.

"The aforesaid acts of commissions and omissions on the part of the senior management of the NCCF disclose that during their tenure, they acted in a manner unbecoming of public servants and committed irregularities by way of manipulation in the selection of bidders, thereby giving undue favours to Adani Enterprises Ltd. in award of work for supply of coal to APGENCO despite its disqualification," it added.

Wayanad, Mar 3: Anguished over the alleged delay in receiving flood relief from the Kerala government, a 42-year-old man committed suicide in Wayanad district, police said on Tuesday. Sanal Kumar, a native of Thrikaipatta in Meppadi near here was found hanging inside the temporary shelter built by his friends and local people on Monday. He was among the hundreds who had lost their homes in the August 2019 floods.

His home, built on a three cent plot, had been damaged partially in 2018 floods and completely in the 2019 deluge. Family members of the deceased alleged that it was due undue delay on the part of the authorities in allotting funds for rebuilding his house that drove Kumar to take the extreme step. Kumar was hoping to get a house under the Life Mission project, sources said.

A relative said Kumar had only 3 cent of land and had lot of debts. Even the Rs 10,000 assistance promised by the state government for the flood affected, had not reached him. Since the past two years he had filed several applications for assistance and apporached many revenue authroties for the promised government assistance, but it never came, the locals alleged.

According to K K Sahad, president of Meppadi Panchayat the deceased had some other financial issues and it was not the delay in rehabilitation that made him commit suicide. "It is true that he was not included in the first list of beneficiaries under the LIFE project as he had to have "pattayam" (land records) for his land.

However, he was included in the second list, thanks to the dilution in the norms that possession was enough for those who had no 'pattayam' for their property. The amount of Rs 4 lakhs was sanctioned for him, but was delayed a bit due to some technical issues."

Wayanad MLA C K Saseendran described it as an "extremely sad" development. As Kumar had some difficulties in producing the land recrods, the authroties had been unable to include his name in the LIFE housing scheme in the first phase.

The matter has been brought before the notice of the revenue authorities, he said. Vythiri Tahsildar, Abdul Hameed, visited Kumar's relatives this morning as the family members of the deceased wanted his presence before the body was taken for post-mortem.

"There was some technical issues with regard to the land as it falls within the adhivasi reserve. But they were occupying it for long. However, the issue has been sorted out and that his family members would be getting the eligibility amount of four lakhs," Hameed said.