John Frankenfield's research while affiliated with Florida Atlantic University and other places
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Publications (12)
Several places across the world are experiencing a steep surge in COVID-19 infections. Face masks have become increasingly accepted as one of the most effective means for combating the spread of the disease when used in combination with social-distancing and frequent hand-washing. However, there is an increasing trend of people substituting regular...
Several places across the world are experiencing a steep surge in COVID-19 infections. Face masks have become increasingly accepted as one of the most effective means for combating the spread of the disease, when used in combination with social-distancing and frequent hand-washing. However, there is an increasing trend of people substituting regula...
The use of face masks in public settings has been widely recommended by public health officials during the current COVID-19 pandemic. The masks help mitigate the risk of cross-infection via respiratory droplets, however, there are no specific guidelines on mask materials and designs that are most effective in minimizing droplet dispersal. While the...
AUV-based field measurement and characterization of the electromagnetic field in coastal waters associated with live submerged cables is described. The effort is in support of a program to characterize the EMF emissions associated with submerged power transmission cables from offshore energy harvesting devices to shore and identifying their environ...
Sea-keeping characteristics of a wave-adaptive modular catamaran, developed by Marine Advanced Research Inc., is studied using at-sea experiments and dynamic modeling. The vehicle is based on the Proteus design and is supported by two inflatable pontoons with each pontoon attached to a center payload tray using an independent suspension system conn...
AUV-based measurement of the magnetic field offshore of South Florida is described. The effort is part of a measurement program involving observations from fixed and mobile sensor systems in the region in support of characterizing the local background magnetic field in coastal waters. A SeaSpy magnetometer is towed at some distance from a Bluefin 2...
Citations
... They concluded that the N95 masks block the formation of the jet while the surgical mask redirects it sideways. Qualitative visualisations of the airflow around a person wearing a face cover were recently performed by Verma et al. [7], [8]. They used a laser sheet to illuminate particles in suspension, resulting in impressive visualisations rich in details of the flow structures. ...
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... Consistentemente con este resultado, Verma y col. [60], [61] mostraron que el uso de casi cualquier tapabocas o protector facial permite el escape de gotas inferiores a 10 μm. Los autores estudiaron el movimiento de la pluma de aerosoles emitida al cabo de un evento de tos generado por un maniquí realista (Figura 6.1.2). ...
... As expected, the droplet evaporation time was found to be dependent on the ambient temperature and was also a strong function of relative humidity. Verma et al. (2020) showed that the use of protective shields can have a significant effect on the pattern of droplets diffusion as well as the spread of contamination in the sneezing process. Abuhegazy et al. (2020) examined the emission model of aerosols in air, and found that these particles could be easily transported in the environment by the ambient flow. ...
... The SeaSPY2 is a reliable high sensitivity magnetometer with unmatched absolute accuracy. It is the only mag that has been integrated inside an unmanned aerial vehicle (AUV) and with a glider [81]. It is also the only longitudinal gradiometer on the market. ...
... Characterization of respiratory droplets produced by healthy and infected persons have been considered by different investigators [10][11][12][13][14]. The trajectory of the droplets highly depends on the diameter of droplet which ranges from 1 lm to 500 lm. ...
... Most of these studies are qualitatively descriptive in their summary of the spread of COVID-19 across the geography of a country. Prior physically-inspired research on COVID-19 has focused on fluids and aerosols [15][16][17][18][19], characteristics of optimal antigens [20], contagion and percolation models [21,22] and network models [23][24][25]. Methods from statistical physics have been used widely to study both COVID-19 and prior epidemics [20,[25][26][27]. ...
... Hanya menggunakan safety goggles tidak dapat mencegah penularan COVID-19 (Khunti et al., 2020). Begitu pula dengan hanya menggunakan face shield tanpa masker karena masih terdapat celah untuk droplets masuk ke dalam saluran pernapasan (Verma, Dhanak, & Frankenfield, 2020). ...
... The first is the mistaken belief that a visor offers as much protection as a facemask, with this ironically being most evident in the vulnerable 65-74 age group. The evidence that use of visors without a mask does not offer efficient protection has since become well established (Salimnia et al., 2021;Verma et al., 2020). The mistaken belief that emerged in our data may now be less of a concern locally as public health messages that have been launched intending to correct this have probably taken effect. ...
Reference: Xjenza Online Volume 8 Issue 2
... This platform features a passive suspension system between the superstructure and the twin demihulls, allowing for one to pivot independently of the other. This mitigates the wave effects on the superstructure in terms of heave motions [55]. It is propelled by two 24-V Minn-Kota trolling motors, capable of producing a maximum of 210 N of thrust each, according to a bollard pull test [45]. ...
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... In situ Monopile, jacket, and gravity-based turbines with inter-array cables and export cables either on or in the seabed introduce EMF within the seabed and above. methods have included surface-towed, bottom-towed, and autonomous underwater vehicles, each either measuring the magnetic field or simultaneously measuring magnetic and electric fields in three dimensions (Dhanak et al., 2015;Kavet et al., 2016;Sherwood et al., 2016;Hutchison et al., 2020). It is important to consider the properties of the cable and the emitted EMF's three-dimensional interaction with the local geomagnetic field, as well as the spatial extent and intensity of the cable EMF. ...
