Results 31 to 40 of about 43,453 (194)
On the masses of black-holes in radio-loud quasars [PDF]
, 2001 The central black-hole masses of a sample of radio-loud quasars are estimated by using the data of $H_{\beta}$ line-width and the optical continuum luminosity. The vast majority of the quasars in this sample have black-hole masses larger than $10^{8} M_{\
Cao, Xinwu, Gu, Minfeng, Jiang, D. R.
core +3 more sources
Transforming pedagogy using mobile Web 2.0 [PDF]
, 2010 Blogs, wikis, podcasting, and a host of free, easy to use Web 2.0 social software provide opportunities for creating social constructivist learning environments focusing on student-centred learning and end-user content creation and sharing.
Bateman, Roger, Cochrane, Thomas
core +1 more source
Recharging and rejuvenation of decontaminated N95 masks [PDF]
Physics of Fluids, 2020 N95 respirators comprise a critical part of the personal protective equipment used by frontline health-care workers and are typically meant for one-time usage. However, the recent COVID-19 pandemic has resulted in a serious shortage of these masks leading to a worldwide effort to develop decontamination and re-use procedures.
Emroj Hossain +6 more
openaire +3 more sources
N95 respirator decontamination: a study in reusability
Materials Today Advances, 2021 The coronavirus disease 2019 (COVID-19) pandemic had caused a severe depletion of the worldwide supply of N95 respirators. The development of methods to effectively decontaminate N95 respirators while maintaining their integrity is crucial for respirator regeneration and reuse.
C.-G. Wang +23 more
openaire +3 more sources
Particle Filtration Efficiency Testing of Sterilization Wrap Masks [PDF]
Journal of Preventive Medicine and Public Health, 2021 Objectives Non-traditional materials are used for mask construction to address personal protective equipment shortages during the coronavirus disease 2019 (COVID-19) pandemic.
Destiny F. Chau +2 more
doaj +1 more source
N95 Usage During the COVID-19 Pandemic [PDF]
Journal of the American Podiatric Medical Association, 2020 Personal Protective Equipment (PPE), formerly ubiquitous and disposable in the hospital and healthcare environment, has become scarce during the COVID-19 pandemic. This shortage has precipitated creative solutions to re-use and/or extend the lifetime of PPE, most notably the N95 mask.
Nicole M, DeLauro +2 more
openaire +2 more sources
Effect of face masks on speech understanding: A clinical perspective during speech audiometry
Journal of Otology, 2022 The objective was to measure the effect of various face masks on speech recognition threshold and the word recognition score in the presence of varying background noise levels. 20 normal-hearing adult subjects (a total of 40 ears) participated. Pure tone
Rawish Kumar +4 more
doaj +1 more source
Improving prediction of national evaluations by use of data from other countries [PDF]
, 2000 National and international Holstein bull evaluations from Canada, France, Germany, Italy, The Netherlands, and the US were examined to determine whether inclusion of data from other countries increased the accuracy of prediction of national evaluations ...
Banos +6 more
core +1 more source
OTO Open, 2021 Objectives As specialists of the upper airway, otolaryngologists are at high risk for COVID-19 transmission. N95 and half-face respirator (HFR) masks are commonly worn, each with advantages in functionality and comfort.
Erin R. Cohen MD +7 more
doaj +1 more source
Plasmonic and Superhydrophobic Self-Decontaminating N95 Respirators [PDF]
ACS Nano, 2020 The COVID-19 pandemic is endangering the world due to the spread of respiration droplets with viruses. Medical workers and frontline staff need to wear respirators to protect themselves from breathing in the virus-containing respiration droplets.
Zhong, Hong +8 more
openaire +3 more sources