Atmospheric Aerosols

Hidy, George M.

doi:10.1016/b978-0-12-347260-1.50013-1

Cited by 4 publications

(7 citation statements)

References 141 publications

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“…The maximum number concentration was also observed at the same humidity, regardless of the concentration of nitric acid and ammonia. The deliquescence relative humidity (DRH) of ammonium nitrate has an RH of 62% at 25°C (Hidy, 1984), and the peak in the particle number observed in this measurement is in agreement with the DRH.…”

Section: Measured Particle Number and Size Distributionsupporting

confidence: 75%

Effect of Relative Humidity on Aerosol Generation through Experiments at Low Concentrations of Gaseous Nitric Acid and Ammonia

Kobara

Takeuchi

Ibusuki

2007

Aerosol Air Qual. Res.

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Particle generation of ammonium nitrate from gaseous nitric acid and ammonia at low concentrations (100-600 ppbv) was investigated using a flow-type reactor with a silanized inner wall for deactivation. The particle number concentration of the generated aerosols was maximum at a constant relative humidity (RH) of around 60% in experiments at different gas concentrations.The RH of 60% coincides with the deliquescence relative humidity (DRH) of ammonium nitrate, and the physical state of particles is thought to be different below and above DRH. The size distribution of the particles was greatly affected by the RH. The NH 4 NO 3 content in the wet particles was measured and compared with the value derived from the hydration-dehydration cycle.This report provides a simple and convenient method to generate NH 4 NO 3 particles.

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Section: Measured Particle Number and Size Distributionsupporting

confidence: 75%

Effect of Relative Humidity on Aerosol Generation through Experiments at Low Concentrations of Gaseous Nitric Acid and Ammonia

Kobara

Takeuchi

Ibusuki

2007

Aerosol Air Qual. Res.

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“…The plot is normalized to the total airborne Pb concentration. Minimum and maximum diameters of 0.05 and 40 µ , respectively, have been assumed on the basis of scanning electron microscopy data reported in the literature (27) and on optical microscopy examination of the impactor stages as part of the present study. The graph represents average data from the two Andersen impactors operated during overlapping time intervals; the error bars indicate the range of the two values for each size range.…”

Section: Data Presentation and Discussionmentioning

confidence: 99%

Airborne trace elements in Great Smoky Mountains, Olympic, and Glacier National Parks

Davidson¹,

Wiersma²,

Brown³

et al. 1985

Environ. Sci. Technol.

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“…The little particles of an aerosol (0.5 to 10 μm in measurement) can possibly be suspended in air and infiltrate profound into the respiratory alveoli and are thought to convey the best potential for transmitting contaminations, while bigger particles of a splatter (more noteworthy than 50 μm in width) settle effectively onto ecological surfaces. Irresistibly microbes are available in the oral cavity and the respiratory tract, and from that point, they can enter the blood and salivation (Hidy, 1984a(Hidy, , 1984b(Hidy, , 1984c. Barrier precautions are a fundamental component of infection control PPE kit is used for Personal Protection worn by employees.…”

Section: Dentist's Exposure To Respiratory Viruses In Dental Clinicsmentioning

confidence: 99%

“…The water droplets produced during dental treatment in the patient's mouth can cause the spread of microorganisms and influence the nature of dentistry condition. During dental strategies that produce water droplets, rubber dams give hindrance security from the mouth and will basically prevent all pathogens rising up out of respiratory exhalation (Hidy, 1984a). Utilization of rubber dams during cavity preparation has a notable decrease in the spread of microorganisms.…”

Section: Dentist's Exposure To Respiratory Viruses In Dental Clinicsmentioning

confidence: 99%

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Respiratory Viral Outbreak in Dental Clinics - A Review

2021

cibg

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A respiratory viral outbreak is the outbreak of viral disease related to respiration and respiratory system. Respiratory viral diseases are classified into two types. They are upper respiratory viral diseases and lower respiratory viral diseases. Some of the common respiratory viruses include influenza virus, respiratory syncytial virus, parainfluenza virus, adenovirus, rhinovirus, human metapneumovirus. The route of entry of the virus is from the outer environment the microbe gets inside the host body and reaches the target cells and starts multiplying inside the target cells and then burst opens, the newly formed viruses are released into the bloodstream of the host and those new viruses get new target cells in the host body, till it reaches the particular amount virus, there will be no symptoms seen. And the dental clinics are considered the high-risk zones for the outbreak of viruses. The aim of the review was to create awareness among the dentist about the respiratory viruses and to be safe and prevent outbreaks in dental clinics. This is a review study setting, evaluating the respiratory viral outbreaks in dental clinics. Data for the study were collected from search engines like PUBMED, GOOGLE SCHOLAR, MeSH, Cochrane, Semantic scholar. A total number of 70 articles were selected. In this review, the viral disease outbreaks are limited to the respiratory system. With this we can conclude that the data obtained from the present study may be useful for practitioners to be safe, prevent outbreaks and easy diagnosis of diseases and give treatment after precautions and preventive measures for the viral disease are taken.

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Atmospheric Aerosols

Cited by 4 publications

References 141 publications

Effect of Relative Humidity on Aerosol Generation through Experiments at Low Concentrations of Gaseous Nitric Acid and Ammonia

Effect of Relative Humidity on Aerosol Generation through Experiments at Low Concentrations of Gaseous Nitric Acid and Ammonia

Airborne trace elements in Great Smoky Mountains, Olympic, and Glacier National Parks

Respiratory Viral Outbreak in Dental Clinics - A Review

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