Covid-19 pandemic: from carnival masks to surgical masks
نویسندگان
چکیده
منابع مشابه
Used Face Masks and Challenges of Infectious Waste Management During COVID-19 Pandemic
Used Face Masks and Challenges of Infectious Waste Management During COVID-19 Pandemic
متن کاملNotch Filter Masks: Practical Image Masks for Planet-Finding Coronagraphs
An ideal coronagraph with a band-limited image mask can efficiently image off-axis sources while removing identically all of the light from an on-axis source. However, strict mask construction tolerances limit the utility of this technique for directly imaging extrasolar terrestrial planets. We present a variation on the basic band-limited mask design—a family of “notch filter” masks—that mitig...
متن کاملThe effectiveness of surgical face masks: what the literature shows.
The use and withdrawal of surgical face masks in recent years has occurred in an ad hoc manner that is incompatible with evidence-based practice. Much of the literature on masks consists of anecdotal evidence or summaries of previous studies. The rationale for wearing masks has shifted from protection of the patient to protection of the health care professional wearing the mask. Currently there...
متن کاملRespiratory Source Control Using Surgical Masks With Nanofiber Media
BACKGROUND Potentially infected individuals ('source') are sometimes encouraged to use face masks to reduce exposure of their infectious aerosols to others ('receiver'). To improve compliance with Respiratory Source Control via face mask and therefore reduce receiver exposure, a mask should be comfortable and effective. We tested a novel face mask designed to improve breathability and filtratio...
متن کاملSpeech understanding using surgical masks: a problem in health care?
BACKGROUND Successful communication is necessary in health-care environments. Yet the presence of noise in hospitals, operating rooms, and dental offices may have a deleterious effect on health-care personnel and patients understanding messages accurately. The presence of a surgical mask and hearing loss may further affect speech perception. PURPOSE To evaluate whether a surgical mask had an ...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Brazilian Journal of Nephrology
سال: 2020
ISSN: 2175-8239,0101-2800
DOI: 10.1590/2175-8239-jbn-2020-0078