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Chinese researchers have recently reported that flushing public restroom toilets or urinals can spew clouds of particles carrying viruses, including Covid-19.
The study, published in the journal ‘Physics of Fluids’, found that Covid-19 particles from a flushing urinal can rise to two feet in the air in less than six seconds “potentially infecting the unsuspecting urinal user”.
The researchers’ work shows public restrooms can be dangerous places for potentially becoming infected with a virus, especially during the Covid-19 pandemic.
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Other studies have shown that both faeces and urine-based virus transmission is possible.
“To do this, we used a method of computational fluid dynamics to model the particle movement that occurs with the act of flushing,” said study researcher Xiangdong Liu from Yangzhou University in China.
“The specific models are the volume-of-fluids model and the discrete-phase model,” Liu added.
Flushing a urinal, much like flushing a toilet, involves an interaction between gas and liquid interfaces. The result of the flushing causes a large spread of aerosol particles to be released from the urinal, which the researchers simulated and tracked.
Want to read more in Hindi? Checkout: कोरोना महामारी की चपेट से कब तक उबर पाएगा वैश्विक अर्थव्यवस्था?
What the simulations revealed is disturbing. The trajectory of the tiny particles ejected by flushing a urinal “manifests an external-spread type, with more than 57 per cent of the particles travelling away from the urinal,” said Liu.
But that’s not all. When men use urinals within a public restroom, these tiny particles can reach their thigh within 5.5 seconds as compared to the toilet flush, which takes 35 seconds to reach slightly higher, the researchers wrote.
“Particles from urinals, however, show a more violent climbing tendency. The climbing speed is much faster than toilet flushing,” Liu said.
Urinals are used more frequently within densely populated areas and the researchers point out that particles will travel faster and farther, which poses a serious public health challenge. This work underscores how important it is to wear a mask within public places, especially restrooms.
“From our work, it can be inferred that urinal flushing promotes the spread of bacteria and viruses,” Liu added.
“Wearing a mask should be mandatory within public restrooms during the pandemic and anti-diffusion improvements are urgently needed to prevent the spread of Covid-19,” the study author noted. (IANS)
Khadi is no longer a dull, drab fabric meant only for politicians' wardrobes. A fashion show organised by the Khadi Gramodyog Board as part of the Azadi Ka Amrit Mahotsav to mark the 75th year of India's Independence showcased the use of Khadi in traditional, as well as, contemporary and festive wear. From lehengas in resplendent Khadi silk to western clothes and casual wear, the models on Thursday night displayed new facts of the fabric.
Several well-known Indian designers including Ritu Beri, Farah Ansari, Rina Dhaka, Asma Husain, Aditi Rastogi and Himmat Singh showcased their designs. Gaurav Gaur directed the fashion show with clothes like lehengas, kurtis, kurta pajamas and partywear.
Lucknow's chikankari and silk artisans also participated in the event. A wedding collection in Khadi was the highlight of the show. "The show was based on the concept 'Khadi for nation, Khadi for fashion' and the fabric for all costumes was provided by Khadi Gramodyog Board," said a spokesman. (IANS/ MBI)
Keywords: lucknow, clothes, lehengas, fashion, fabric
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Intel saw its stock tumbling by more than 8 percent after the chipmaker said the industry-wide component shortage affected its PC chip business during the third quarter (Q3). Intel CEO Pat Gelsinger told CNBC late on Thursday that he didn't expect the semiconductor shortage to end until 2023. "We're in the worst of it now, every quarter, next year we'll get incrementally better, but they're not going to have supply-demand balance until 2023," Gelsinger was quoted as saying.
The company delivered its Q3 results with revenue up 5 percent (year-over-year) driven by strong demand in its DCG and IoTG businesses, despite the highly constrained industry-wide supply environment. "Q3 revenue was $18.1 billion slightly below our guide due to shipping and supply constraints that impacted our businesses," George S. Davis, Chief Financial Officer, said in a statement. He also announced plans to retire from Intel in May 2022. In the third quarter, the company generated $9.9 billion in cash from operations and paid dividends of $1.4 billion.
| Photo by Slejven Djurakovic on Unsplash
According to the company, the demand remains strong in its PC business with particular strength in commercial, desktop, and higher-end consumer notebooks. In an earnings call, Gelsinger said that the digitization of everything accelerated by the four superpowers of AI, pervasive connectivity, cloud to edge infrastructure, and ubiquitous compute are driving the sustained need for more semiconductors. "The market is expected to double to $1 trillion by 2030. In that timeframe, the market for leading-edge nodes will rise to be over 50 percent of the total, while the market for leading-edge foundry services will grow at twice the rate of the semi-industry overall," he envisioned.
PC demand remains very strong, and "We believe the 2021 TAM (total addressable market) will grow double digits even as ecosystem shortages constrain our customer's ability to ship finished systems," Gelsinger added. "Customers continue to choose Intel for their datacenter needs and our third-gen scalable Xeon processor Ice Lake has shipped over 1 million units since launching in April, and we expect to ship over 1 million units again in Q4 alone," he informed. (IANS/MBI)
Keywords: Intel, Chip, processor, Desktop, AI, Semiconductor, PC, Processor
Micro-blogging site Twitter has announced that its audio chatroom Spaces is now open to anyone who wants to host. The Spaces team in a tweet said that the users on both Android and iOS will now be able to host Spaces. "The time has arrived -- we're now rolling out the ability for everyone on iOS and Android to host a Space," the firm said in a tweet.
Earlier this year, the company had limited access to hosting Spaces to accounts with at least 600 followers, saying that it found these accounts would be more likely to have a good experience due to the existing audience. Twitter recently announced a new accelerator programme for creators on its audio conversation platform Spaces, to "discover and reward" around 150 creators with technical, financial and marketing support.
The 'Twitter Spaces Spark' programme is a three-month accelerator initiative. Those selected will get a stipend of $2,500 per month, $500 in monthly ad credits to spend promoting their Spaces on Twitter and early access to new Twitter features. They will also get support from Twitter's official social media handles, and "opportunities for prioritised in-app discoverability for well-performing Spaces".
Twitter has also announced plans to roll out paid Ticketed Spaces for iOS users where some hosts on its live audio feature can now sell access to Ticketed Spaces. Twitter had previously said that it will take a 3 per cent cut of creators' earnings from Ticketed Spaces. (IANS/ MBI)
Keywords: android, creators, ticketed, access, twitter, spaces