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Letteratura scientifica selezionata sul tema "Masks"

Autore: Grafiati

Pubblicato: 4 giugno 2021

Ultima modifica: 9 giugno 2025

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Articoli di riviste sul tema "Masks"

1

Jager, Bernd. "Of Masks and Marks, Therapists and Masters." Journal of Phenomenological Psychology 21, no. 2 (1990): 165–79. http://dx.doi.org/10.1163/156916290x00047.

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2

Meschutt, David, Mark L. Taff, and Lauren R. Boglioli. "Life Masks and Death Masks." American Journal of Forensic Medicine and Pathology 13, no. 4 (December 1992): 315–19. http://dx.doi.org/10.1097/00000433-199212000-00009.

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3

Magaš, Morana, Davorka Švegar, Ivana Škrobonja, Nina Janaš, Mihaela Kranjčević-Ščurić, and Maja Abram. "Bacterial contamination of used surgical masks among high-risk ward staff." Sestrinski glasnik 28, no. 3 (December 15, 2023): 170–74. http://dx.doi.org/10.11608/sgnj.28.3.5.

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Uvod: Zaštitne maske kontaminiraju se uporabom, mikrobiotom nosne i usne šupljine te kože lica. Izvješća o kontaminaciji i potencijalu za prijenos uzročnika bolničkih infekcija nedostaju ili su rijetka. Istraženo je može li maska postati izvor mikroorganizama i predstavljati rizik za prijenos infekcija povezanih sa zdravstvenom skrbi. Cilj rada bio je usporediti mikrobno opterećenje maski, vestibuluma nosa i ruku djelatnika kako bismo identificirali potencijalne rizike.Metode: Provedena je studija prevalencije u jednom danu u studenom 2022. godine na hematološkom odjelu tercijarne bolnice. Kriterij uključivanja bila je činjenica da se djelatnik tog jutra nalazi u neposrednom radu sa stacionarnim bolesnicima. Uzeti su brisevi nosa, ruku i maski. Sudionici su podijeljeni u dvije skupine: oni koji su masku nosili do 30 minuta i oni koji su je nosili više od 1 sata. Brisevi su obrađeni standardnim mikrobiološkim postupcima.Rezultati: Od 10 ispitanika, njih je 5 masku nosilo 30-ak minuta, a preostalih 5 više od 1 sata. U prvoj skupini nije bilo pozitivnih mikrobioloških nalaza. U skupini djelatnika koji su masku nosili dulje od 1 sata izolirani su koagulaza negativni stafilokoki, Staphylococcus hominis i Staphylococcus warneri u tri od pet ispitanika. Iz briseva vestibuluma nosa u jednom slučaju identificiran je meticilin osjetljiv Staphylococcus aureus. U dva slučaja identificirane su iste vrste, S. hominis i S. warneri, kao i na njihovim maskama. Brisevi ruku kod devetero djelatnika ostali su sterilni, dok su u jednom slučaju izolirani antrakoidi iz roda Bacillus.Rasprava sa zaključkom: Unutar jednog sata na zaštitnim maskama mogu se naći bakterije koje se nalaze u nosu ili koži lica djelatnika. Produljenom uporabom može se očekivati povećanje broja, ali i kontaminacija raznolikim vrstama mikroorganizama što može predstavljati značajan rizik biološke sigurnosti. Osnaživanje prakse higijene ruku minimizira rizik od infekcija i povećava sigurnost pacijenata i osoblja.

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Acosta, R. E. "Stability of alignment marks for x-ray masks." Journal of Vacuum Science & Technology B: Microelectronics and Nanometer Structures 4, no. 1 (January 1986): 240. http://dx.doi.org/10.1116/1.583448.

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Putri, Aliati, Tadeus Arufan Yasrin, Hening Tjaturina Pramesti, and Erry Mochamad Arief. "In vitro effectiveness of the filtration in three and four layered surgical masks after a few hours exposure of S. aureus: experiment study." Padjadjaran Journal of Dentistry 35, no. 3 (December 29, 2023): 211. http://dx.doi.org/10.24198/pjd.vol35no3.50260.

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ABSTRACTIntroduction: Surgical masks commonly have many layers. The outer layer acts as the initial filtration and the protection for the middle layer, the middle layer acts as the primary filtration, and the innermost layer absorbs liquid to prevent the spread of droplets from the mask's wearer. The recommended duration of wearing medical and fabric masks is 4–6 hours, while some studies stated that the maximum duration is 8 hours. The use of S. aureus in this study was based on its clinical relevance as a major cause of nosocomial infections. This study aimed to analyze the effectiveness of the filtration in three-layer and four-layer masks against S. aureus. Methods: This experimental study followed the methods of previous research, and followed the Standard Test Method from SNI 8489 2018 with several adjustments consisting of several steps, i.e., preparation of tested masks, bacterial culture media, and tested bacteria; determination of masks’ filtration efficacy; confirmation of the efficacy. All steps were repeated 15 times with exposure times of 2, 4, 6, and 8 hours and analysis using the chi-square test. Results: The percentage of surgical masks filtration effectiveness was indicated by the growth of S. aureus in Nutrient Agar media. The four-layer surgical masks showed the highest percentage (80%) of 2 hours and 4 hours of usage. Both types showed the lowest percentage of 8 hours of usage. Based on the duration of wearing, the mask's filtration effectiveness from the highest and lowest score was the S. aureus-exposed media for 2, 4, 6, and 8 hours, respectively p<0.050. The comparison value for the effectiveness of mask filtration between the type of masks and the length of use was 0.003. Conclusion: The filtration effectiveness of the four-layer masks is higher than the three-layer masks according to the duration of wearing the masks.Keyword : Surgical masks, filtration, duration, S.aureus

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McClain, Yoko, Fumiko Enchi, and Juliet Winters. "Masks." Journal of the Association of Teachers of Japanese 20, no. 1 (April 1986): 90. http://dx.doi.org/10.2307/489528.

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Warm, Eric J. "Masks." Annals of Internal Medicine 153, no. 10 (November 16, 2010): 684. http://dx.doi.org/10.7326/0003-4819-153-10-201011160-00016.

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Barón Ruiz, Gloria Lizeth. "Masks." Enletawa Journal 13, no. 2 (October 29, 2020): 106. http://dx.doi.org/10.19053/2011835x.11990.

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Gloria Lizeth Barón, a student in the languages program, painted the piece titled Masks. We want to highlight this oil on canvas because the work is representative of a poem titled We Wear the Mask by Paul Laurence Dunbar. Though the poem was written from 1872 to 1906, the poet speaks of the hardships of racism and discrimination in society that resonate with us today. The current reckoning of protests around the world to stop systemic racism makes Gloria's piece more relevant than ever.

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Dorn, Alfred. "Masks." Hudson Review 38, no. 4 (1986): 627. http://dx.doi.org/10.2307/3851559.

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Huth, Kathleen, and Peter H. Weinstock. "Masks." Simulation in Healthcare: The Journal of the Society for Simulation in Healthcare 15, no. 6 (September 9, 2020): 375–76. http://dx.doi.org/10.1097/sih.0000000000000499.

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Tesi sul tema "Masks"

1

Nicholas, Jeffrey Francis. "Masks." Bowling Green State University / OhioLINK, 2016. http://rave.ohiolink.edu/etdc/view?acc_num=bgsu1459629154.

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Seip, Lisa Pauline. "Early Nuxalk masks." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 2000. http://www.collectionscanada.ca/obj/s4/f2/dsk1/tape2/PQDD_0027/MQ51469.pdf.

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Miller, Stephanie. "Masks, a journey for discovery." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 2000. http://www.collectionscanada.ca/obj/s4/f2/dsk1/tape3/PQDD_0027/MQ51420.pdf.

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Sanchez, Erin. "Filtration Efficiency of Surgical Masks." Scholar Commons, 2010. https://scholarcommons.usf.edu/etd/1760.

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Surgical masks are intended to be used to prevent transmission of disease from a health care worker to a patient. Often times, they are relied upon by health care workers for their own protection. In light of recent developments regarding preparation for health care worker response to global infectious diseases such as H1N1 Influenza, health care workers may experience a false sense of security when wearing surgical masks. The goal of this study was to evaluate the filtration efficiency of a double strap tie-on surgical mask. The manufacturer asserts a >95% efficiency with a 0.1 um challenge aerosol under FDA testing procedures. The NIOSH Title 42 CFR Part 84 certification criteria call for testing at a rate of 85 lpm representing a human moderate to heavy work load breathing rate. Three sizes of monodispersed aerosols (polystyrene latex beads: 0.5 um, 1.0 um, 2.0 um) were used. The specific aims were to measure the collection efficiencies of this mask for the various particle sizes. Two tests were performed. In the first, masks were affixed to a dummy head and the edges of the mask were not sealed. In the second, the edges of the masks were sealed to the head using silicone sealant, so all penetration was through the filtering material of the mask. Differences in upstream and downstream particle concentrations were measured. Thus, penetration by leakage around the mask and through the filtering material was measured. The experimental set up involved passing the aerosol from the nebulizer through a diffusion dryer and Kr-85 charge equilibrator ensuring a dry charge neutralized aerosol cloud for detection by a LASAIR particle counter. The analysis revealed that the filtration efficiency for 0.5 um particles ranged from 3% to 43% for the unsealed masks and 42% to 51% for the sealed. For 1.0 um particles, the efficiency was 58% to 75% for unsealed and 71% to 84% for sealed masks. For 2.0 um, the efficiency was 58% to 79% for unsealed masks and 69% to 85% for the sealed masks. The data were statistically significant and indicated that surgical masks were associated with very low filtration efficiency. This suggests that they may be inadequate against airborne viruses and bacteria.

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Li, Chan Yi. "Texture synthesis based on texton masks." Thesis, University of Macau, 2005. http://umaclib3.umac.mo/record=b1636981.

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Sanders, Jet G. "Face perception and hyper-realistic masks." Thesis, University of York, 2018. http://etheses.whiterose.ac.uk/22393/.

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Previous research has shown that deliberate disguise deteriorates human and automatic face recognition, with consequences for person identification in criminal situations. Common forms of deliberate disguise (e.g. balaclavas or hoodies) are easy to detect. When such disguises are used, viewer can distinguish between an unmasked individual - whose identity they knowingly can observe from facial appearance - and a masked individual - whose identity they knowingly cannot. Hyper-realistic silicone masks change this. Their recent use in criminal settings suggests that they effectively disguise identity and are difficult to detect. In this thesis, I first show that viewers are strikingly poor at distinguishing hyper-realistic masks from real faces under live and photographic test conditions, and are worse in other-race conditions. I also show large individual differences in discriminating realistic masks from real faces (5%-100% accuracy), and use an image analysis to isolate information that high performers use for effective categorisation. The analysis reveals an informative region directly below the eyes, which is used by high performers but not low performers. These findings point to selection and training as routes to improved mask detection. Second, I examine the reliability of estimates made of the person beneath the mask. Demographic profiling and social character estimates are poor, and results show that recognition rates were only just above chance, even for familiar viewers. This analysis highlights a systematic bias in these estimates: demographics, traits and social characteristics of the mask were attributed to those of the wearer. This bias has theoretical and applied consequences. First, it supports the automaticity with which viewers use a face to judge a person, even when they know the face is not that of the person. Second, it suggests that predictions of the person underneath the mask, by familiar and unfamiliar viewers alike, should be treated with great caution.

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Newman, Kevin, and Kevin Newman. "Achromatic Phase Shifting Focal Plane Masks." Diss., The University of Arizona, 2016. http://hdl.handle.net/10150/621110.

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The search for life on other worlds is an exciting scientific endeavor that could change the way we perceive our place in the universe. Thousands of extrasolar planets have been discovered using indirect detection techniques. One of the most promising methods for discovering new exoplanets and searching for life is direct imaging with a coronagraph. Exoplanet coronagraphy of Earth-like planets is a challenging task, but we have developed many of the tools necessary to make it feasible. The Phase-Induced Amplitude Apodization (PIAA) Coronagraph is one of the highest-performing architectures for direct exoplanet imaging. With a complex phase-shifting focal plane mask, the PIAA Complex Mask Coronagraph (PIAACMC) can approach the theoretical performance limit for any direct detection technique. The architecture design is flexible enough to be applied to any arbitrary aperture shape, including segmented and obscured apertures. This is an important feature for compatibility with next-generation ground and space-based telescopes. PIAA and PIAACMC focal plane masks have been demonstrated in monochromatic light. An important next step for high-performance coronagraphy is the development of broadband phase-shifting focal plane masks. In this dissertation, we present an algorithm for designing the PIAA and PIAACMC focal plane masks to operate in broadband. We also demonstrate manufacturing of the focal plane masks, and show laboratory results. We use simulations to show the potential performance of the coronagraph system, and the use of wavefront control to correct for mask manufacturing errors. Given the laboratory results and simulations, we show new areas of exoplanet science that can potentially be explored using coronagraph technology. The main conclusion of this dissertation is that we now have the tools required to design and manufacture PIAA and PIAACMC achromatic focal plane masks. These tools can be applied to current and future telescope systems to enable new discoveries in exoplanet science.

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Kella, Vasiliki. "Germinate writing in Plautus : doubles & masks." Thesis, King's College London (University of London), 2015. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.676716.

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Jones, Christopher Wendell. "Masks, chamber concerto for violoncello and ensemble." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 2000. http://www.collectionscanada.ca/obj/s4/f2/dsk2/ftp03/MQ49705.pdf.

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Bay, Christoph. "Dynamic holographic masks for adaptive optical lithography." Thesis, University of Cambridge, 2012. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.609954.

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Libri sul tema "Masks"

1

Gavrilova, Neli. Lit︠s︡a na maski, maski za lit︠s︡a: Likove ot Pernishko = Faces of masks, masks for faces : masks from Pernik region. Pernik: Obshtina Pernik, 2008.

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Roberson, Chris. Masks. Mt. Laurel, NJ: Dynamite Entertainment, 2013.

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Baskin, Leonard. Masks. [Rockport, Me.]: Gehenna Press, 1999.

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Flanagan, Alice. Masks! New York: Children's Press, 1996.

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Morris, Ting. Masks. New York: F. Watts, 1993.

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MacLeod-Brudenell, Iain. Masks. Nottingham: Nottingham Educational Supplies, 1986.

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Hodge, Susie. Masks. North Mankato, MN: Smart Apple Media, 2006.

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Kate, Green. Masks. Mankato, MN: Creative Editions, 1994.

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Flanagan, Alice K. Masks! New York: Children's Press, 1996.

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10

Morris, Ting. Masks. North Mankato, MN: Sea to Sea Publications, 2006.

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Capitoli di libri sul tema "Masks"

1

Ridley, Susan. "Masks." In The Expressive Use of Masks Across Cultures and Healing Arts, 7–10. New York: Routledge, 2024. http://dx.doi.org/10.4324/9781003365648-3.

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Hamburger, Michael. "Masks." In The Truth of Poetry, 61–80. London: Routledge, 2022. http://dx.doi.org/10.4324/9781003261339-4.

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Pelias, Ronald J. "Masks." In Writing and Other Familiar Things, 71–74. London: Routledge, 2025. https://doi.org/10.4324/9781003592570-15.

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Starrs, Roy. "Mishima, Bowie and the Anti-Metaphysics of the Mask." In MASKS, 72–90. Intellect Books, 2020. http://dx.doi.org/10.2307/j.ctv36xvxcn.7.

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Curcio, James. "Epilogue:." In MASKS, 266–72. Intellect Books, 2020. http://dx.doi.org/10.2307/j.ctv36xvxcn.20.

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Lababidi, Yahia. "The Great Contrarians." In MASKS, 146–70. Intellect Books, 2020. http://dx.doi.org/10.2307/j.ctv36xvxcn.12.

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Reis-Filho, Lúcio. "Not All That Glitters Is Gold:." In MASKS, 91–102. Intellect Books, 2020. http://dx.doi.org/10.2307/j.ctv36xvxcn.8.

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De Angelis, Davide, and James Curcio. "Wishful Beginnings and Creative Ends:." In MASKS, 235–44. Intellect Books, 2020. http://dx.doi.org/10.2307/j.ctv36xvxcn.17.

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Hunt, Kevin J. "Seeing Things Like Hunter:." In MASKS, 171–92. Intellect Books, 2020. http://dx.doi.org/10.2307/j.ctv36xvxcn.13.

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Curcio, James. "Masks All the Way Down." In MASKS, 6–71. Intellect Books, 2020. http://dx.doi.org/10.2307/j.ctv36xvxcn.6.

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Atti di convegni sul tema "Masks"

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Pang, Linyong, Dakota Seal, Tom Boettiger, Nagesh Shirali, Grace Dai, and Aki Fujimura. "Curvilinear masks: motivations and metrology." In Photomask Technology 2024, edited by Lawrence S. Melvin and Seong-Sue Kim, 113. SPIE, 2024. http://dx.doi.org/10.1117/12.3039296.

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Boulbes, Jerome. "Masks." In ACM SIGGRAPH ASIA 2009 Computer Animation Festival. New York, New York, USA: ACM Press, 2009. http://dx.doi.org/10.1145/1665208.1665253.

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Karwas, Piotr. "Masks." In ACM SIGGRAPH 99 Electronic art and animation catalog. New York, New York, USA: ACM Press, 1999. http://dx.doi.org/10.1145/312379.312835.

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Markitantov, Maxim, Elena Ryumina, Dmitry Ryumin, and Alexey Karpov. "Biometric Russian Audio-Visual Extended MASKS (BRAVE-MASKS) Corpus: Multimodal Mask Type Recognition Task." In Interspeech 2022. ISCA: ISCA, 2022. http://dx.doi.org/10.21437/interspeech.2022-10240.

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Philipsen, Vicky, Peter De Bisschop, and Kei Mesuda. "Mask transmission resonance in bi-layer masks." In Photomask and NGL Mask Technology XV, edited by Toshiyuki Horiuchi. SPIE, 2008. http://dx.doi.org/10.1117/12.793046.

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Pease, Roger Fabian W., Gerry Owen, Raymond Browning, Robert L. Hsieh, Julienne Y. Lee, Nadim I. Maluf, and C. Neil Berglund. "Sophisticated masks." In 10th Annual Symposium on Microlithography, edited by James N. Wiley. SPIE, 1991. http://dx.doi.org/10.1117/12.29747.

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Liddle, James A., Myrtle I. Blakey, Kevin J. Bolan, Reginald C. Farrow, Linus A. Fetter, Leslie C. Hopkins, Harold A. Huggins, et al. "SCALPEL masks." In 14th Annual BACUS Symposium on Photomask Technology and Management, edited by William L. Brodsky and Gilbert V. Shelden. SPIE, 1994. http://dx.doi.org/10.1117/12.195844.

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Erdmann, Andreas, Peter Evanschitzky, and Tim Fühner. "Mask diffraction analysis and optimization for EUV masks." In SPIE Advanced Lithography, edited by Frank M. Schellenberg and Bruno M. La Fontaine. SPIE, 2009. http://dx.doi.org/10.1117/12.814119.

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Pati, Yagyensh C., Yao-Ting Wang, Jen-Wei Liang, and Thomas Kailath. "Phase-shifting masks: automated design and mask requirements." In SPIE's 1994 Symposium on Microlithography, edited by Timothy A. Brunner. SPIE, 1994. http://dx.doi.org/10.1117/12.175426.

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Al-Jumaily, A. M. "Critical Design Condensation Locations in Facial Masks." In ASME 2010 Summer Bioengineering Conference. American Society of Mechanical Engineers, 2010. http://dx.doi.org/10.1115/sbc2010-19101.

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Facial masks are the main interface between patients and breathing supportive devices. Condensation in these masks causes serious breath disturbance which could be life threatening. Based on temperature-driven mass and heat transfer formulations, a computer simulation fluid dynamic model is developed to compute the condensation rate and locations of a typical breathing facial mask. Condensation measurements are taken to validate the model. The effects of mask geometry and shape on condensation are elaborated on.

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Rapporti di organizzazioni sul tema "Masks"

1

Drees, A., C. Biscardi, T. Curcio, D. Gassner, V. DeMonte, L. DeSanto, W. Fu, et al. RHIC Prefire Protection Masks. Office of Scientific and Technical Information (OSTI), January 2015. http://dx.doi.org/10.2172/1172085.

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Bowers, M. NIF Beam Shaping Masks. Office of Scientific and Technical Information (OSTI), October 2001. http://dx.doi.org/10.2172/802916.

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Moore, Gai, Anton du Toit, Brydie Jameson, and Rebecca Gordon. Medical masks COVID-19. The Sax Institute, August 2020. http://dx.doi.org/10.57022/mrgp5250.

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This Evidence Snapshot is a rapid review of the evidence for the efficacy healthcare workers use of N95 masks compared with surgical masks in reducing COVID-19 transmission in hospitals and residential aged-care. The review identified 13 reviews and one commentary addressing comparative effectiveness of respirators and medical masks, eight of which were specific to COVID-19. Direct evidence of the effectiveness of respirators in prevention of SARS-CoV-2 infection is low, with concerns about the generalizability of other virus models. Results were inconsistent with the strongest evidence coming from a WHO commissioned review which adjusted for aerosol generating procedures. The review offers some explanations for the uncertainty around the use of respirators and summarises international recommendations.

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Nguyen, Khanh Bao. Reflective masks for extreme ultraviolet lithography. Office of Scientific and Technical Information (OSTI), May 1994. http://dx.doi.org/10.2172/10196997.

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Swift, David L., Charles E. Billings, and Frank Shanty. Leakage Assessment of Protective Gas Masks. Fort Belvoir, VA: Defense Technical Information Center, August 1988. http://dx.doi.org/10.21236/ada199601.

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Luria, S. M., and James F. Socks. Visual Acuity through Emergency Breathing Masks. Fort Belvoir, VA: Defense Technical Information Center, March 1986. http://dx.doi.org/10.21236/ada168200.

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Koplow, Jeffrey, Kent Smith, Natalia Jouravel, George Buffleben, Anupama Sinha, Oscar Negrete, Todd Barnett, and Richard Karnesky. Supercritical CO2 sterilization of N95 Masks. Office of Scientific and Technical Information (OSTI), October 2020. http://dx.doi.org/10.2172/1821584.

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Dhar, Biswajit. India’s GDP growth masks economic challenges. East Asia Forum, March 2024. http://dx.doi.org/10.59425/eabc.1709373600.

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Hobbs, Abbi, and Sarah Bunn. Face masks, face coverings and COVID-19. Parliamentary Office of Science and Technology, April 2020. http://dx.doi.org/10.58248/rr25.

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Abstract (sommario):

This article goes over the types of masks that exist. It explores how effective are they at preventing transmission of coronavirus, according to the latest research. It reviews the advice on masks and face coverings from public health organisations, and presents official guidance from several nations. This is part of our rapid response content on COVID-19. You can view all our reporting on this topic under COVID-19.

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Feldman, Martin. Adaptive Membrane Masks for Next Generation Lithographies. Fort Belvoir, VA: Defense Technical Information Center, June 2003. http://dx.doi.org/10.21236/ada429119.

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