Benjamin Jones
@BenJonesIEQ
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Associate Professor at University of Nottingham. Interested in the ventilation of buildings, indoor air quality, and their effects on health. My views only.
Nottingham, England
Joined April 2017
#IAQ and #ventilation standards have started to change to consider the harm airborne contaminants cause to populations of people. It is informed by work done here at the University of Nottingham.
🚀🎙️ ASHRAE Journal Podcast Episode 50 is now available!. Join ASHRAE Journal Editor Drew Champlin as he interviews Max Sherman, Ph.D., Fellow/Life Member ASHRAE, about his award-winning article "IAQ Paradigms—The Next Generation.” The conversation delves into the evolution of
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I've written an article with @moog77 on how overstating the effects from over-ventilating risks misdirecting public funds and eroding trust in the industry when expected gains do not materialise.
New oped from @BenJonesIEQ & me.đź’¨ The push for better school ventilation is well-meaning, but claims that it boosts cognition or learning lack strong, causal evidence. Many studies are low quality, poorly controlled, and often overstate effects. #IAQ #ventilation #education 1/5.
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RT @moog77: Just read one of the most ridiculous claims in a scientific journal discussion I've ever seen 👀.a therapeutic approach to gut m….
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The pandemic was a time when you would have thought people might want to improve their ventilation. But, behaviour change is hard because there are many barriers to change.
Great new study on behavioural aspects of ventilation in hospitality venues. Many monitored venues had poor ventilation, but hosts list many barriers to improve - tho some venues attempt to improve following info campaign. let's see why it's not always simple to ⬆️ ventilation:
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Does anyone know?.
Anyone know why the DHHS in the US have pulled the funding for this clinical trials for far UV to reduce indoor transmission of respiratory infections?.
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Consider this a guided tour through the problems with this kind of study….
New study shows that there *might* be some limited affect of room CO2 on doing some online cognitive test game on a phone for students after they have finished class, but sample size is small. 🧵 1/n
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RT @moog77: This paper looks at the effect of different CO2 concs (500ppm and 3000ppm) on the risk of COVID in aircraft cabin, however in a….
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RT @moog77: New conference poster:.No evidence for portable HEPA filtration units reducing .respiratory infection episodes in care home res….
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RT @nntaleb: Not what YOUR data says. Data says that 1) alcohol-caused cancer are attributable to the minority of overdrinkers, 2) doctors….
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More reasons to relax while on the throne!.
These images of toilet plumes look pretty alarming, but in this study @CiaraHigham has measured the total mass of these droplets at heights where they might be inhaled and developed a methodology to estimate infection risk if entering after a flush. tl:dr risk is low 1/n
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RT @TreforBazett: Using LaTeX is WAY easier now with AI. 🧵of my top tricks. 1) Tables. Screenshot a table from anywhere, paste into @overl….
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“The community are presented with findings which on face value appear legitimate, but in fact have a high probability of being completely wrong. Rather than being knowingly ignorant on a topic, the community think they know something, but what they know is wrong.”.
There is a serious issue with research waste in medicine, much of it coming from churned out, low quality observational studies. This is a problem that comes with serious harms. Why does it happen, and what can we do about it?. đź”— in next post
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RT @moog77: This extends beyond medicine, and as Alasdair states, it can result in poor policy decisions, poor spending of public monies an….
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RT @moog77: Nice study investigating impact of air cleaners on COVID transmission on a geriatric ward.tldr; nosocomial COVID infections are….
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RT @moog77: Systematic review on impact of filtration and ventilation on viral transmission.tldr:. - filters filter. - identified no field….
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Were you right?.
The answer to the quiz was the expected dose would be 3.5 virion.As @TimHarford would say though:.Is a dose of 3.5 virion and.Is an exhalation of 1000 virion/hr.a big number?.let's see. and why it matters with respect to ventilation efficacy🧵1/n.
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RT @moog77: Imagine a 150m3 classroom with quite low ventilation 3l/s/person and 32 occupants. If an infector is exhaling 1000 virion/hour,….
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Our letter to Scinece in response to a call for 14L/s/p and 350ppm excess CO2 in all space. We show there is no evidence for these thresholds, and ask that we use evidence as a basis for regulating the ventilation of buildings.
our response to mandating air quality."Ventilation and its equivalents have a role to play in reducing . risk in some circumstances, we need a stronger empirical evidence base before mandating . with its associated costs and carbon emissions".
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