Discover and read the best of Twitter Threads about #isesisiaq2019
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#ISESISIAQ2019 incredibly important study of health effects from commuting in traffic by G. Mallach from Health Canada. Randomized double blind placebo controlled crossover study of cabin air filtration in a minivan. NOTE: filters only about 30% efficient! (1/3)
#ISESISIAQ2019 heart rate variability: increase in HRV initially after commute (more pronounced in women) then goes back to baseline 90 min after exposure. Saliva cortisol: women very different compared to men: PM increased cortisol in women, decreased it in men. (2/3)
#ISESISIAQ2019 Cognitive function deficits seen in reaction time, and other measures after 90 min of exposure by commuter to black carbon particles (!) (3/3)
#ISESISIAQ2019 A. Hoisington studies interaction between nature, personal control of occupant, #indoorairquality and mental health. Surveyed 92 #Denver VA hospital veterans.
Found that no nature pictures, poor privacy and water damage all were associated with severe depression/PTSD/insomnia
#ISESISIAQ2019 key results reported by S. Chillrud (scholar.google.com/citations?hl=e…) on Stove intervention study in Ghana.
Ambient PM2.5 exposure was around 35-50 ug/m3. Highest exposure was measured for women who did tons of cooking, showed high compliance wearing the personal exposure monitors. those who used an LPG stove arm were exposed to only 9 ug/m3 over ambient.
whereas those who cooked with the traditional 3 stone stove where exposed to 52 ug/m3 above ambient, so found an 83% reduction when using the LPG stove.
#ISESISIAQ2019 Gedi Mainelis discussed an interesting approach using thermography with laser scanning to diagnose various housing related health and safety hazards.
Found that 6 out of 20 apartments had poor insulation with 10% of the surface area missing insulation. Also found in these home higher ultrafine particle number (<0.3 um) concentration, and ultra fine I/O ratio higher.
Top floor and corner apartments had the most insulation missing. Apartments that had more asthma incidence also had higher concentrations of ultrafine particles and PM2.5.
#ISESISIAQ2019 nice talk by H. Demirtape: 60 homes sampled in Czech near a PCB manufacturing facility for PCBs, organochloride pesticides, PBDEs, flame retardants. found PCB-11 dominated the dust/air (1/4)
PCB-11 dominated the dust and air. It is produced unintentionally during manufacturing of pigments used in paints paper products and textiles - indicates modern indoor sources of PCBs in home. (2/4)
Pesticides correlated with % agricultural land within 1 km radius of each home. Flame retardants not correlated to indoor sources such as PVC flooring, lower ratios in european samples compared to American samples. PAHs related to heating with wood. (3/4)
Second plenary today by Yuguo Li Professor Uni of Hong Kong sharing his deep understanding of respiratory infection in buildings and transmission routes, role of environmental intervention. #ISESISIAQ2019 Read his papers! scholar.google.com/citations?hl=e…
Washing hands work well for enteric infections not so well for respiratory infections because surface and hand hygiene go hand in hand and their evaluation and use can not be separated #ISESISIAQ2019
Workers in open plan offices had 62% more six days than cell offices. Oh and probability of getting sick is higher if you sit in an aisle seat on an airplane compared to a window seat! #ISESISIAQ2019
