{"id":119084,"date":"2021-08-24T10:00:17","date_gmt":"2021-08-24T14:00:17","guid":{"rendered":"https:/news/wp-json/wp/v2/posts/119084///news/wp-json/wp/v2/posts/119084//www.ucf.edu/news/wp-json/wp/v2/posts/119084//news/news/wp-json/wp/v2/posts/119084//?p=119084"},"modified":"2022-03-31T15:59:51","modified_gmt":"2022-03-31T19:59:51","slug":"ucf-study-shows-masks-ventilation-stop-covid-spread-better-than-social-distancing","status":"publish","type":"post","link":"https:/news/wp-json/wp/v2/posts/119084///news/wp-json/wp/v2/posts/119084//www.ucf.edu/news/wp-json/wp/v2/posts/119084//news/news/wp-json/wp/v2/posts/119084//ucf-study-shows-masks-ventilation-stop-covid-spread-better-than-social-distancing/news/wp-json/wp/v2/posts/119084//","title":{"rendered":"麻豆原创 Study Shows Masks, Ventilation Stop COVID Spread Better than Social Distancing"},"content":{"rendered":"<p>A new study from the 麻豆原创 suggests that masks and a good ventilation system are more important than social distancing for reducing the airborne spread of COVID-19 in classrooms.</news/wp-json/wp/v2/posts/119084//p>/news/wp-json/wp/v2/posts/119084/n<p>The research, published recently in the journal <em>Physics of Fluids</news/wp-json/wp/v2/posts/119084//em>, comes at a critical time when schools and universities are considering returning to more in-person classes in the fall.</news/wp-json/wp/v2/posts/119084//p>/news/wp-json/wp/v2/posts/119084/n<blockquote><p>/news/wp-json/wp/v2/posts/119084/u201cThe results suggest exactly what the CDC is doing, that ventilation systems and mask usage are most important for preventing transmission./news/wp-json/wp/v2/posts/119084/u201d /news/wp-json/wp/v2/posts/119084/u2014 Michael Kinzel, 麻豆原创 assistant professor</news/wp-json/wp/v2/posts/119084//p></news/wp-json/wp/v2/posts/119084//blockquote>/news/wp-json/wp/v2/posts/119084/n<p>/news/wp-json/wp/v2/posts/119084/u201cThe research is important as it provides guidance on how we are understanding safety in indoor environments,/news/wp-json/wp/v2/posts/119084/u201d says Michael Kinzel, an assistant professor in 麻豆原创/news/wp-json/wp/v2/posts/119084/u2019s Department of Mechanical and Aerospace Engineering and study co-author.</news/wp-json/wp/v2/posts/119084//p>/news/wp-json/wp/v2/posts/119084/n<p>/news/wp-json/wp/v2/posts/119084/u201cThe study finds that aerosol transmission routes do not display a need for six feet social distancing when masks are mandated,/news/wp-json/wp/v2/posts/119084/u201d he says. /news/wp-json/wp/v2/posts/119084/u201cThese results highlight that with masks, transmission probability does not decrease with increased physical distancing, which emphasizes how mask mandates may be key to increasing capacity in schools and other places./news/wp-json/wp/v2/posts/119084/u201d</news/wp-json/wp/v2/posts/119084//p>/news/wp-json/wp/v2/posts/119084/n<p>In the study, the researchers created a computer model of a classroom with students and a teacher, then modeled airflow and disease transmission, and calculated airborne-driven transmission risk.</news/wp-json/wp/v2/posts/119084//p>/news/wp-json/wp/v2/posts/119084/n<figure id=/news/wp-json/wp/v2/posts/119084/"attachment_119113/news/wp-json/wp/v2/posts/119084/" style=/news/wp-json/wp/v2/posts/119084/"max-width: 1200px;/news/wp-json/wp/v2/posts/119084/" class=/news/wp-json/wp/v2/posts/119084/"figure mx-auto d-block/news/wp-json/wp/v2/posts/119084/"><noscript><img decoding=/news/wp-json/wp/v2/posts/119084/"async/news/wp-json/wp/v2/posts/119084/" width=/news/wp-json/wp/v2/posts/119084/"1200/news/wp-json/wp/v2/posts/119084/" height=/news/wp-json/wp/v2/posts/119084/"598/news/wp-json/wp/v2/posts/119084/" class=/news/wp-json/wp/v2/posts/119084/"figure-img  img-fluid w-100 size-full wp-image-119113/news/wp-json/wp/v2/posts/119084/" src=/news/wp-json/wp/v2/posts/119084/"https:/news/wp-json/wp/v2/posts/119084///news/wp-json/wp/v2/posts/119084//www.ucf.edu/news/wp-json/wp/v2/posts/119084//news/news/wp-json/wp/v2/posts/119084//wp-content/news/wp-json/wp/v2/posts/119084//blogs.dir/news/wp-json/wp/v2/posts/119084//20/news/wp-json/wp/v2/posts/119084//files/news/wp-json/wp/v2/posts/119084//2021/news/wp-json/wp/v2/posts/119084//04/news/wp-json/wp/v2/posts/119084//airborne_transmissionv2.jpg/news/wp-json/wp/v2/posts/119084/" alt=/news/wp-json/wp/v2/posts/119084/"Computer-model of a classroom used in an airborne transmission study/news/wp-json/wp/v2/posts/119084/" 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https:/news/wp-json/wp/v2/posts/119084///news/wp-json/wp/v2/posts/119084//www.ucf.edu/news/wp-json/wp/v2/posts/119084//wp-content/news/wp-json/wp/v2/posts/119084//blogs.dir/news/wp-json/wp/v2/posts/119084//20/news/wp-json/wp/v2/posts/119084//files/news/wp-json/wp/v2/posts/119084//2021/news/wp-json/wp/v2/posts/119084//04/news/wp-json/wp/v2/posts/119084//airborne_transmissionv2-360x179.jpg 360w/news/wp-json/wp/v2/posts/119084/" sizes=/news/wp-json/wp/v2/posts/119084/"(max-width: 1200px) 100vw, 1200px/news/wp-json/wp/v2/posts/119084/"></news/wp-json/wp/v2/posts/119084//noscript><img decoding=/news/wp-json/wp/v2/posts/119084/"async/news/wp-json/wp/v2/posts/119084/" width=/news/wp-json/wp/v2/posts/119084/"1200/news/wp-json/wp/v2/posts/119084/" height=/news/wp-json/wp/v2/posts/119084/"598/news/wp-json/wp/v2/posts/119084/" class=/news/wp-json/wp/v2/posts/119084/"figure-img  img-fluid w-100 size-full wp-image-119113 lazyload/news/wp-json/wp/v2/posts/119084/" src=/news/wp-json/wp/v2/posts/119084/"data:image/news/wp-json/wp/v2/posts/119084//svg+xml,%3Csvg%20xmlns%3D%22http%3A%2F%2Fwww.w3.org%2F2000%2Fsvg%22%20viewBox%3D%220%200%201200%20598%22%3E%3C%2Fsvg%3E/news/wp-json/wp/v2/posts/119084/" alt=/news/wp-json/wp/v2/posts/119084/"Computer-model of a classroom used in an airborne transmission study/news/wp-json/wp/v2/posts/119084/" srcset=/news/wp-json/wp/v2/posts/119084/"data:image/news/wp-json/wp/v2/posts/119084//svg+xml,%3Csvg%20xmlns%3D%22http%3A%2F%2Fwww.w3.org%2F2000%2Fsvg%22%20viewBox%3D%220%200%201200%20598%22%3E%3C%2Fsvg%3E 1200w/news/wp-json/wp/v2/posts/119084/" sizes=/news/wp-json/wp/v2/posts/119084/"(max-width: 1200px) 100vw, 1200px/news/wp-json/wp/v2/posts/119084/" data-srcset=/news/wp-json/wp/v2/posts/119084/"https:/news/wp-json/wp/v2/posts/119084///news/wp-json/wp/v2/posts/119084//www.ucf.edu/news/wp-json/wp/v2/posts/119084//wp-content/news/wp-json/wp/v2/posts/119084//blogs.dir/news/wp-json/wp/v2/posts/119084//20/news/wp-json/wp/v2/posts/119084//files/news/wp-json/wp/v2/posts/119084//2021/news/wp-json/wp/v2/posts/119084//04/news/wp-json/wp/v2/posts/119084//airborne_transmissionv2.jpg 1200w, https:/news/wp-json/wp/v2/posts/119084///news/wp-json/wp/v2/posts/119084//www.ucf.edu/news/wp-json/wp/v2/posts/119084//wp-content/news/wp-json/wp/v2/posts/119084//blogs.dir/news/wp-json/wp/v2/posts/119084//20/news/wp-json/wp/v2/posts/119084//files/news/wp-json/wp/v2/posts/119084//2021/news/wp-json/wp/v2/posts/119084//04/news/wp-json/wp/v2/posts/119084//airborne_transmissionv2-300x150.jpg 300w, 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https:/news/wp-json/wp/v2/posts/119084///news/wp-json/wp/v2/posts/119084//www.ucf.edu/news/wp-json/wp/v2/posts/119084//wp-content/news/wp-json/wp/v2/posts/119084//blogs.dir/news/wp-json/wp/v2/posts/119084//20/news/wp-json/wp/v2/posts/119084//files/news/wp-json/wp/v2/posts/119084//2021/news/wp-json/wp/v2/posts/119084//04/news/wp-json/wp/v2/posts/119084//airborne_transmissionv2-360x179.jpg 360w/news/wp-json/wp/v2/posts/119084/" data-src=/news/wp-json/wp/v2/posts/119084/"https:/news/wp-json/wp/v2/posts/119084///news/wp-json/wp/v2/posts/119084//www.ucf.edu/news/wp-json/wp/v2/posts/119084//news/news/wp-json/wp/v2/posts/119084//wp-content/news/wp-json/wp/v2/posts/119084//blogs.dir/news/wp-json/wp/v2/posts/119084//20/news/wp-json/wp/v2/posts/119084//files/news/wp-json/wp/v2/posts/119084//2021/news/wp-json/wp/v2/posts/119084//04/news/wp-json/wp/v2/posts/119084//airborne_transmissionv2.jpg/news/wp-json/wp/v2/posts/119084/"><figcaption class=/news/wp-json/wp/v2/posts/119084/"figure-caption/news/wp-json/wp/v2/posts/119084/">In the study, the researchers created a computer model of a classroom with students and a teacher, then modeled airflow and disease transmission, and calculated airborne-driven transmission risk.</news/wp-json/wp/v2/posts/119084//figcaption></news/wp-json/wp/v2/posts/119084//figure>/news/wp-json/wp/v2/posts/119084/n<p>The classroom model was 709 square feet with 9-foot-tall ceilings, similar to a smaller-size, university classroom, Kinzel says. The model had masked students /news/wp-json/wp/v2/posts/119084/u2014 any one of whom could be infected/news/wp-json/wp/v2/posts/119084/u2014 and a masked teacher at the front of the classroom.</news/wp-json/wp/v2/posts/119084//p>/news/wp-json/wp/v2/posts/119084/n<p>The <a href=/news/wp-json/wp/v2/posts/119084/"https:/news/wp-json/wp/v2/posts/119084///news/wp-json/wp/v2/posts/119084//www.ucf.edu/news/wp-json/wp/v2/posts/119084//research/news/wp-json/wp/v2/posts/119084///news/wp-json/wp/v2/posts/119084/">researchers</news/wp-json/wp/v2/posts/119084//a> examined the classroom using two scenarios /news/wp-json/wp/v2/posts/119084/u2014 a ventilated classroom and an unventilated one /news/wp-json/wp/v2/posts/119084/u2014 and using two models, Wells-Riley and Computational Fluid Dynamics. Wells-Riley is commonly used to assess indoor transmission probability and Computational Fluid Dynamics is often used to understand the aerodynamics of cars, aircraft and the underwater movement of submarines.</news/wp-json/wp/v2/posts/119084//p>/news/wp-json/wp/v2/posts/119084/n<p>Masks were shown to be beneficial by preventing direct exposure of aerosols, as the masks provide a weak puff of warm air that causes aerosols to move vertically, thus preventing them from reaching adjacent students, Kinzel says.</news/wp-json/wp/v2/posts/119084//p>/news/wp-json/wp/v2/posts/119084/n<p>Additionally, a ventilation system in combination with a good air filter reduced the infection risk by 40 to 50% compared to a classroom with no ventilation. This is because the ventilation system creates a steady current of air flow that circulates many of the aerosols into a filter that removes a portion of the aerosols compared to the no-ventilation scenario where the aerosols congregate above the people in the room.</news/wp-json/wp/v2/posts/119084//p>/news/wp-json/wp/v2/posts/119084/n<p>These results corroborate recent guidelines from the U.S. Centers for Disease Control and Prevention that recommend reducing social distancing in elementary schools from six to three feet when mask use is universal, Kinzel says.</news/wp-json/wp/v2/posts/119084//p>/news/wp-json/wp/v2/posts/119084/n<figure id=/news/wp-json/wp/v2/posts/119084/"attachment_110809/news/wp-json/wp/v2/posts/119084/" style=/news/wp-json/wp/v2/posts/119084/"max-width: 300px;/news/wp-json/wp/v2/posts/119084/" class=/news/wp-json/wp/v2/posts/119084/"figure float-left/news/wp-json/wp/v2/posts/119084/"><noscript><img 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https:/news/wp-json/wp/v2/posts/119084///news/wp-json/wp/v2/posts/119084//www.ucf.edu/news/wp-json/wp/v2/posts/119084//wp-content/news/wp-json/wp/v2/posts/119084//blogs.dir/news/wp-json/wp/v2/posts/119084//20/news/wp-json/wp/v2/posts/119084//files/news/wp-json/wp/v2/posts/119084//2020/news/wp-json/wp/v2/posts/119084//07/news/wp-json/wp/v2/posts/119084//麻豆原创-COVID-Safety-Upgrades-13.jpg 1200w/news/wp-json/wp/v2/posts/119084/" data-src=/news/wp-json/wp/v2/posts/119084/"https:/news/wp-json/wp/v2/posts/119084///news/wp-json/wp/v2/posts/119084//www.ucf.edu/news/wp-json/wp/v2/posts/119084//news/news/wp-json/wp/v2/posts/119084//wp-content/news/wp-json/wp/v2/posts/119084//blogs.dir/news/wp-json/wp/v2/posts/119084//20/news/wp-json/wp/v2/posts/119084//files/news/wp-json/wp/v2/posts/119084//2020/news/wp-json/wp/v2/posts/119084//07/news/wp-json/wp/v2/posts/119084//麻豆原创-COVID-Safety-Upgrades-13-300x200.jpg/news/wp-json/wp/v2/posts/119084/"><figcaption class=/news/wp-json/wp/v2/posts/119084/"figure-caption/news/wp-json/wp/v2/posts/119084/">麻豆原创 has upgraded filters in its HVAC systems to mitigate any spread of pathogens through the air. The left filter is a MERV 9, which captures bacteria, spores and viruses. The right filter is a MERV 14, which increase performance and capture rate while maintaining good ventilation.</news/wp-json/wp/v2/posts/119084//figcaption></news/wp-json/wp/v2/posts/119084//figure>/news/wp-json/wp/v2/posts/119084/n<p>/news/wp-json/wp/v2/posts/119084/u201cIf we compare infection probabilities when wearing masks, three feet of social distancing did not indicate an increase in infection probability with respect to six feet, which may provide evidence for schools and other businesses to safely operate through the rest of the pandemic,/news/wp-json/wp/v2/posts/119084/u201d Kinzel says.</news/wp-json/wp/v2/posts/119084//p>/news/wp-json/wp/v2/posts/119084/n<p>/news/wp-json/wp/v2/posts/119084/u201cThe results suggest exactly what the CDC is doing, that ventilation systems and mask usage are most important for preventing transmission and that social distancing would be the first thing to relax,/news/wp-json/wp/v2/posts/119084/u201d the researcher says.</news/wp-json/wp/v2/posts/119084//p>/news/wp-json/wp/v2/posts/119084/n<p>When comparing the two models, the researchers found that Wells-Riley and Computational Fluid Dynamics generated similar results, especially in the non-ventilated scenario, but that Wells-Riley underpredicted infection probability by about 29 % in the ventilated scenario.</news/wp-json/wp/v2/posts/119084//p>/news/wp-json/wp/v2/posts/119084/n<p>As a result, they recommend some of the additional complex effects captured in Computational Fluid Dynamics be applied to Wells-Riley to develop a more complete understanding of risk of infection in a space, says Aaron Foster, a doctoral student in 麻豆原创/news/wp-json/wp/v2/posts/119084/u2019s Department of Mechanical and Aerospace Engineering and the study/news/wp-json/wp/v2/posts/119084/u2019s lead author.</news/wp-json/wp/v2/posts/119084//p>/news/wp-json/wp/v2/posts/119084/n<p>/news/wp-json/wp/v2/posts/119084/u201cWhile the detailed Computational Fluid Dynamics results provided new insights into the risk variation and distance relationships, they also validated the more commonly used Wells-Riley models as capturing the majority of the benefit of ventilation with reasonable accuracy,/news/wp-json/wp/v2/posts/119084/u201d Foster says. /news/wp-json/wp/v2/posts/119084/u201cThis is important since these are publicly available tools that anyone can use to reduce risk./news/wp-json/wp/v2/posts/119084/u201d</news/wp-json/wp/v2/posts/119084//p>/news/wp-json/wp/v2/posts/119084/n<figure id=/news/wp-json/wp/v2/posts/119084/"attachment_110810/news/wp-json/wp/v2/posts/119084/" style=/news/wp-json/wp/v2/posts/119084/"max-width: 300px;/news/wp-json/wp/v2/posts/119084/" class=/news/wp-json/wp/v2/posts/119084/"figure float-left/news/wp-json/wp/v2/posts/119084/"><noscript><img decoding=/news/wp-json/wp/v2/posts/119084/"async/news/wp-json/wp/v2/posts/119084/" width=/news/wp-json/wp/v2/posts/119084/"300/news/wp-json/wp/v2/posts/119084/" 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src=/news/wp-json/wp/v2/posts/119084/"data:image/news/wp-json/wp/v2/posts/119084//svg+xml,%3Csvg%20xmlns%3D%22http%3A%2F%2Fwww.w3.org%2F2000%2Fsvg%22%20viewBox%3D%220%200%20300%20200%22%3E%3C%2Fsvg%3E/news/wp-json/wp/v2/posts/119084/" alt srcset=/news/wp-json/wp/v2/posts/119084/"data:image/news/wp-json/wp/v2/posts/119084//svg+xml,%3Csvg%20xmlns%3D%22http%3A%2F%2Fwww.w3.org%2F2000%2Fsvg%22%20viewBox%3D%220%200%20300%20200%22%3E%3C%2Fsvg%3E 300w/news/wp-json/wp/v2/posts/119084/" sizes=/news/wp-json/wp/v2/posts/119084/"(max-width: 300px) 100vw, 300px/news/wp-json/wp/v2/posts/119084/" data-srcset=/news/wp-json/wp/v2/posts/119084/"https:/news/wp-json/wp/v2/posts/119084///news/wp-json/wp/v2/posts/119084//www.ucf.edu/news/wp-json/wp/v2/posts/119084//wp-content/news/wp-json/wp/v2/posts/119084//blogs.dir/news/wp-json/wp/v2/posts/119084//20/news/wp-json/wp/v2/posts/119084//files/news/wp-json/wp/v2/posts/119084//2020/news/wp-json/wp/v2/posts/119084//07/news/wp-json/wp/v2/posts/119084//麻豆原创-COVID-Safety-Upgrades-14-300x200.jpg 300w, https:/news/wp-json/wp/v2/posts/119084///news/wp-json/wp/v2/posts/119084//www.ucf.edu/news/wp-json/wp/v2/posts/119084//wp-content/news/wp-json/wp/v2/posts/119084//blogs.dir/news/wp-json/wp/v2/posts/119084//20/news/wp-json/wp/v2/posts/119084//files/news/wp-json/wp/v2/posts/119084//2020/news/wp-json/wp/v2/posts/119084//07/news/wp-json/wp/v2/posts/119084//麻豆原创-COVID-Safety-Upgrades-14-768x512.jpg 768w, 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https:/news/wp-json/wp/v2/posts/119084///news/wp-json/wp/v2/posts/119084//www.ucf.edu/news/wp-json/wp/v2/posts/119084//wp-content/news/wp-json/wp/v2/posts/119084//blogs.dir/news/wp-json/wp/v2/posts/119084//20/news/wp-json/wp/v2/posts/119084//files/news/wp-json/wp/v2/posts/119084//2020/news/wp-json/wp/v2/posts/119084//07/news/wp-json/wp/v2/posts/119084//麻豆原创-COVID-Safety-Upgrades-14.jpg 1200w/news/wp-json/wp/v2/posts/119084/" data-src=/news/wp-json/wp/v2/posts/119084/"https:/news/wp-json/wp/v2/posts/119084///news/wp-json/wp/v2/posts/119084//www.ucf.edu/news/wp-json/wp/v2/posts/119084//news/news/wp-json/wp/v2/posts/119084//wp-content/news/wp-json/wp/v2/posts/119084//blogs.dir/news/wp-json/wp/v2/posts/119084//20/news/wp-json/wp/v2/posts/119084//files/news/wp-json/wp/v2/posts/119084//2020/news/wp-json/wp/v2/posts/119084//07/news/wp-json/wp/v2/posts/119084//麻豆原创-COVID-Safety-Upgrades-14-300x200.jpg/news/wp-json/wp/v2/posts/119084/"><figcaption class=/news/wp-json/wp/v2/posts/119084/"figure-caption/news/wp-json/wp/v2/posts/119084/">UVC lighting has been added in 麻豆原创&#8217;s HVAC systems to help sterilize air inside of high-traffic buildings, such as the library and large classroom buildings. The strong light essentially stops pathogens from reproducing, thus reducing its potential for spreading.</news/wp-json/wp/v2/posts/119084//figcaption></news/wp-json/wp/v2/posts/119084//figure>/news/wp-json/wp/v2/posts/119084/n<p>The research is part of a larger overall effort to control airborne disease transmission and better understand factors related to being a super-spreader. The researchers are also testing the effects of masks on aerosol and droplet transmission distance. The work is funded in part by the National Science Foundation.</news/wp-json/wp/v2/posts/119084//p>/news/wp-json/wp/v2/posts/119084/n<p>Kinzel received his doctorate in aerospace engineering from Pennsylvania State University and joined 麻豆原创 in 2018. In addition to being a member of 麻豆原创/news/wp-json/wp/v2/posts/119084/u2019s Department of Mechanical and Aerospace engineering, a part of 麻豆原创/news/wp-json/wp/v2/posts/119084/u2019s&nbsp;<a href=/news/wp-json/wp/v2/posts/119084/"https:/news/wp-json/wp/v2/posts/119084///news/wp-json/wp/v2/posts/119084//www.ucf.edu/news/wp-json/wp/v2/posts/119084//college/news/wp-json/wp/v2/posts/119084//engineering-computer-science/news/wp-json/wp/v2/posts/119084///news/wp-json/wp/v2/posts/119084/">College of Engineering and Computer Science</news/wp-json/wp/v2/posts/119084//a>, he also works with 麻豆原创/news/wp-json/wp/v2/posts/119084/u2019s&nbsp;Center for Advanced Turbomachinery and Energy Research.</news/wp-json/wp/v2/posts/119084//p>/news/wp-json/wp/v2/posts/119084/n","protected":false},"excerpt":{"rendered":"<p>The results indicate masks and proper ventilation may be key to allowing more capacity in schools, businesses and other indoor areas.</news/wp-json/wp/v2/posts/119084//p>/news/wp-json/wp/v2/posts/119084/n","protected":false},"author":199,"featured_media":119111,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"lazy_load_responsive_images_disabled":false,"footnotes":"","_links_to":"","_links_to_target":"","_wp_rev_ctl_limit":""},"categories":[5,23,24],"tags":[11212,973,18250,17393,35967],"tu_author":[],"class_list":["post-119084","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-colleges","category-research","category-science-technology","tag-center-for-advanced-turbomachinery-and-energy-research","tag-college-of-engineering-and-computer-science","tag-coronavirus","tag-department-of-mechanical-and-aerospace-engineering","tag-mechanical-and-aerospace-engineering"],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v22.3 (Yoast SEO v27.3) - 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