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To help beat COVID-19, don't talk inside an elevator: Here's why | Special-reports – Gulf News

DUBAI: Every day some 7 billion elevator journeys take place. Those were the days when lifts can be packed with people. Well, not anymore. Today, there are well-established elevator mandates, discouraging passengers from talking, overcrowding, among others.
This may remain so for the foreseeable future. And that’s because elevators meet at least two conditions known to contribute to the easy spread of the coronavirus: High-touch surfaces and people confined in a tight space breathing each other’s air. In some countries, like Germany, France, The Netherlands, Norway, a “third wave” of COVID-19 cases are still spiking again exponentially, though case numbers are starting to drop in countries that have ramped up vaccinations, including the UAE. ....

United Arab Emirates , Gulf News , Noord Holland , Daniel Bonn , Joseph Allen , Qingyan Chen , Purdue University , Centers For Disease , Airliner Cabin Environment Research , Harvard University , Aviation Administration Center , University Of Amsterdam Institute Physics , Image Credit , Vijith Pulikkal , Principal Director , Federal Aviation Administration , Airliner Cabin Environment , Disease Control , ஒன்றுபட்டது அரபு அமீரகங்கள் , வளைகுடா செய்தி , நூற்த் ஹாலண்ட் , டேனியல் பொன் , ஜோசப் ஆலன் , பர்‌ட்யூ பல்கலைக்கழகம் , மையங்கள் க்கு நோய் , பெரிய பயணவிமானம் கேபின் சூழல் ஆராய்ச்சி ,

No increased risk of aerosols with special nasal cannula

University of Amsterdam
A specific type of nasal oxygen therapy for Covid patients does not cause a higher risk of virus infection for health care workers. In an article in Respiratory Care, researchers from the group of Daniel Bonn (UvA-IoP) and from the Amsterdam UMC conclude that this therapy does not increase the risk of aerosol formation. The result may help in lessening the pressure on ICUs.
A nasal cannula. Image: Amsterdam UMC.
According to the researchers, which include UvA physicists Daniell Bonn and Stefan Kooij, the result takes away the worries about the use of high flow nasal oxygen (HFNO). This is a special technique used to administer a high flow of heated and moistened oxygen to the (Covid) patient through a nasal cannula. ....

Noord Holland , Alexander Vlaar , Alexanderp Vlaar , Rozalinde Klein Blommert , Daniel Bon , Ingrid Jb Spijkerman , Stefan Kooij , Niels Van Mourik , Daniell Bonn , University Of Amsterdam , Respiratory Care , Daniel Bonn , Reinout Bem , Medical Research , Corona Virus , Covid 19 , நூற்த் ஹாலண்ட் , டேனியல் பான் , டேனியல் பொன் , பல்கலைக்கழகம் ஆஃப் ஆம்ஸ்டர்டாம் , சுவாச பராமரிப்பு , மருத்துவ ஆராய்ச்சி , கொரோனா வைரஸ் ,

Why can we skate on ice?

With the temperatures outside below zero and the speed skating world championships around the corner, ice is on everyone's mind. One thing we all know:. ....

Noord Holland , Daniel Bonn , Feng Chun Hsia , Sven Kramer , Bart Weber , Andrew Schutzman , John Joly , Koen Verweij , Jan Blokhuijsen , University Of Amsterdam , University Of Amsterdam Why , Chang Winter Olympics , Show Temperature , Speed Control , நூற்த் ஹாலண்ட் , டேனியல் பொன் , ஃபெங் சுன் ஶா , ஸ்வெந் கிராமர் , பார்ட் வெபர் , ஜான் மகிழ்ச்சி , கொஎன் வேறுவேஜ் , பல்கலைக்கழகம் ஆஃப் ஆம்ஸ்டர்டாம் , பல்கலைக்கழகம் ஆஃப் ஆம்ஸ்டர்டாம் ஏன் , சாங் குளிர்காலம் ஒலிம்பிக்ஸ் , எப்படி வெப்ப நிலை , வேகம் கட்டுப்பாடு ,

Daniel Bonn wins Physica Prize 2021

University of Amsterdam
The Physica Prize 2021 has been awarded to Daniel Bonn of the University of Amsterdam. Prof. Dr. Daniel Bonn is a leading expert in soft matter, a field that encompasses a wide field of materials that deform easily, such as plastics and gels. The Physica Prize is awarded annually to an eminent physicist working in the Netherlands.
Daniel Bonn. Photo: UvA
Daniel Bonn revolutionised the scientific fields that deal with systems that are neither solid nor liquid (‘complex fluids’) and with the interaction between liquids and solids (‘wetting’). Most of his research is centred around materials that appear in everyday life. Blood, shampoo and oil are examples of complex fluids, which sometimes act as liquids and sometimes as solids. Daniel Bonn’s breakthrough work on the phase transition between solid-like and liquid-like behaviour has led to a much more complete understanding of the underlying physics. ....

Noord Holland , Daniel Bonn , Foundation Physica , University Of Amsterdam Daniel Bonn , University Of Amsterdam , Netherland Physical Society , Physica Prize , நூற்த் ஹாலண்ட் , டேனியல் பொன் , பல்கலைக்கழகம் ஆஃப் ஆம்ஸ்டர்டாம் டேனியல் பொன் , பல்கலைக்கழகம் ஆஃப் ஆம்ஸ்டர்டாம் , நெதர்லாந்து உடல் சமூகம் ,

Explained: How to measure aerosols with a particle counter, after accounting for dust

While the device used comes with six different size channels 0.3, 0.5, 1.0, 2.0, 5.0, and 10.0 microns ( 1 micron is a millionth part of a metre) a lot of the dust is so fine that aerosols in that range cannot really be measured. More than 98% of the dust, in fact, is contained in the first two channels (smallest particles) of size 0.3 and 0.5 microns. The study did not consider particles in these channels for the aerosol assessment. “But there’s a reasonable sized range where you can detect the aerosols,” Bonn said.
For validation, the researchers compared their measurements with those from specialised laboratory techniques. Aerosol concentration is often measured using a technique called laser diffraction, in which a laser beam passing through a sample lights up different-sized particles differently. Results from this highly specialised technique and the method used in the study, the researchers found, matched up perfectly. ....

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