WhatsApp sets up system to store payments-related data locally

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of the American Medical Association, noted that the the current guidelines issued by the WHO and CDC are based on outdated models from the 1930s of how gas clouds from a cough, sneeze, or exhalation spread.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, Jan 25: The latest edition of the Oxford Advanced Learner's Dictionary features 26 new Indian English words, including Aadhaar, chawl, dabba, hartal and shaadi.

The 10th edition of the dictionary, which was launched on Friday, has 384 Indian English words and incorporates over 1,000 new words such as chatbot, fake news and microplastic.

The dictionary focuses on language change and its evolution through the years, and has ensured that the language and examples used in the new edition are relevant and up to date with the times, Oxford University Press (OUP) said.

The new edition comes with interactive online support through the Oxford Learner's Dictionaries website and an app. The website includes advanced features such as audio-video tutorials, video walkthroughs, self-study activities and enhanced iWriter and iSpeaker tools.

"This edition has 26 new Indian English words of which 22 figure in the printed dictionary. The other four are in the digital version," said Fathima Dada, Managing Director (Education Division) at OUP.

Some of other new Indian words in the dictionary are auntie (while aunty already figures in the English dictionary, auntie is an Indianism), bus stand, deemed university, FIR, non-veg, redressal, tempo, tube light, veg and videograph.

The four new Indian English words in the online version of the dictionary are current (for electricity), looter, looting and upazila (one of the areas that a district is divided into for administration purposes).

According to OUP, the new edition provides better, more accurate and understandable definitions with examples, usage notes and additional resources to help the learner use the right word in the right context.

"Prevalence and common usage are the main criteria for enlisting new words. We scan the globe for words which are often used by people while speaking English. Then these words go through a rigorous testing process," Dada said.

"As OUP is the custodian of English language globally, these words have to go through its processes," she told PTI.

The Oxford Advanced Learner's Dictionary, she said, has been reinventing itself for nearly eight decades, anticipating the growing learning requirements of learners.

"The 10th edition also is equipped with a strong digital support system, including an app," she said.

It is equipped with several digital tools. With iSpeaker, learners can get help preparing for speaking exams and presentations. With iWriter, learners can plan, write and review their written work. Text Checker allows the teacher to check any text against the Oxford 3000, 5000, and OPAL (Oxford Phrasal Academic Lexicon) written word list.

Resources accessible through online premium access include lesson plans, worksheets, video walkthroughs, and classroom and self-study activities. With the OALD app one can find 86,000 words, 95,000 phrases, 112,000 meanings and 237,000 examples.

The dictionary, which spans 77 years, was originally published in Japan in 1942 and was first brought out by OUP in 1948. The learner's dictionary is based on the original values of its creator, Albert Sydney Hornby, whose aim was to help language learners worldwide understand the meaning of English words.

Madikeri, Apr 22: The quality of water in the River Cauvery in Kodagu district has improved significantly following the nationwide Lockdown.

The discharge of effluents from home stays and resorts situated on the banks of the river in the district has stopped due to lack of visitors. The discharge of waste water had made the river impure all these years.

The suspension of boat ride in Dubare has reduced the pollution from diesel motorboats in the river. For the last few years, the water quality of the river had reached 'C' category from 'B' category during the summer.