An experimental study of the role of radon and its daughter products in the conversion of sulphur dioxide into aerosol particles in the atmosphere

Experimental studies of aerosol nucleation in air, containing trace amounts of ozone, sulphur dioxide and water vapour at concentrations relevant for the Earth's atmosphere, are reported. The production of new aerosol particles is found to be proportional to the negative ion density and yields nucleation rates of the order of 0.1–1 cm −3 s −1 . This suggests that the ions are active in generating an atmospheric reservoir of small thermodynamically stable clusters, which are important for nucleation processes in the atmosphere and ultimately for cloud formation.

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An experiment to measure raindrop collection efficiencies: influence of rear capture

Atmospheric Measurement Techniques ◽

10.5194/amt-7-1321-2014 ◽

2014 ◽

Vol 7 (5) ◽

pp. 1321-1330 ◽

Cited By ~ 11

Author(s):

A. Quérel ◽

P. Lemaitre ◽

M. Monier ◽

E. Porcheron ◽

A. I. Flossmann ◽

...

Keyword(s):

Experimental Study ◽

Theoretical Model ◽

Aerosol Particle ◽

Aerosol Particles ◽

Severe Accident ◽

Radioactive Aerosol ◽

Microphysical Parameter ◽

Particle Collection ◽

Modelling Studies

Abstract. In the case of severe accident with loss of containment in a nuclear plant, radionuclides are released into the atmosphere in the form of both gases and aerosol particles (Baklanov and Sørensen, 2001). The analysis of radioactive aerosol scavenged by rain after the Chernobyl accident highlights certain differences between the modelling studies and the environmental measurements. Part of these discrepancies can probably be attributed to uncertainties in the efficiencies used to calculate aerosol particle collection by raindrops, particularly drops with a diameter larger than one millimetre. In order to address the issue of these uncertainties, an experimental study was performed to close the gaps still existing for this key microphysical parameter. In this paper, attention is first focused on the efficiency with which aerosol particles in the accumulation mode are collected by raindrops with a diameter of 2 mm. The collection efficiencies measured for aerosol particle in the sub-micron range are quantitatively consistent with previous theoretical model developed by Beard (1974) and thus highlight the major role of rear capture in the submicron range.

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An experiment to measure raindrop collection efficiencies: influence of rear capture

Atmospheric Measurement Techniques Discussions ◽

10.5194/amtd-7-509-2014 ◽

2014 ◽

Vol 7 (1) ◽

pp. 509-539 ◽

Cited By ~ 1

Author(s):

A. Quérel ◽

P. Lemaitre ◽

M. Monier ◽

E. Porcheron ◽

A. I. Flossmann ◽

...

Keyword(s):

Experimental Study ◽

Theoretical Model ◽

Aerosol Particle ◽

Chernobyl Accident ◽

Aerosol Particles ◽

Radioactive Aerosol ◽

Microphysical Parameter ◽

Particle Collection ◽

Modelling Studies

Abstract. The analysis of radioactive aerosol scavenged by rain after the Chernobyl accident highlights certain differences between the modelling studies and the environmental measurements. Part of these discrepancies can probably be attributed to uncertainties in the efficiencies used to calculate aerosol particle collection by raindrops, particularly drops with a diameter larger than one millimetre. In order to improve the issue of these uncertainties, an experimental study was performed to close the gaps still existing for this key microphysical parameter. In the present article, attention is first focused on the efficiency with which aerosol particles, in the accumulation mode are collected by raindrops with a diameter of 2 mm. The collections efficiencies measured for aerosol particle in the sub-micron range are quantitatively consistent with previous theoretical model developed by Beard (1974) and thus highlight the major role of rear capture in the submicron range.

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Experimental study on the relationship between organizational culture and affective well-being at work: Role of person-organization fit

PsycEXTRA Dataset ◽

10.1037/e604062012-309 ◽

2012 ◽

Author(s):

Sonia P. Goncalves ◽

Jose Neves

Keyword(s):

Experimental Study ◽

Organizational Culture ◽

Well Being ◽

Work Role ◽

Person Organization Fit ◽

The Relationship

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Medic Interaction Modes and Hospitalized Children Health

10.31124/advance.8337683 ◽

2019 ◽

Author(s):

Naveed Shibli ◽

Miss Shehrish Farooq

Keyword(s):

Experimental Study ◽

Health Outcomes ◽

Block Design ◽

Pain Scale ◽

Hospitalized Children ◽

Face Pain ◽

Children Health ◽

Face Pain Scale

In the present experimental study different interaction ‘modes’ those took place between a psychologist and a child were tested for the role of these towards health recovery of the child? Following were the interaction modes, a) presenting a flower with smile plus inquiring about health, b) offering a blessing plus inquiring about health, c) making an indifferent presence plus inquiring about health with flat tone, d) inquiring about health with providing precautions about prognosis. It was assumed that all modes would differently influence health outcomes? 100 hospitalized children located in child wards of different hospitals with randomized pre-post block design interacted. One each from four interaction modes was used for a group of 25 participants each. Actual ward discharge was compared with anticipatory estimated by each ward in-charge to calculate effect of mode on outcome. Face Pain Scale, The Children Happiness Scale and a Demographic Sheet were also used. Results reflected ‘modes’ relationship with outcomes. More studies would clarify further.

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The influence of information relevance on the continued influence effect of misinformation

10.31234/osf.io/uatjd ◽

2020 ◽

Author(s):

Hua Jin ◽

Lina Jia ◽

Xiaojuan Yin ◽

Shilin Wei ◽

Guiping Xu

Keyword(s):

Experimental Study ◽

Questionnaire Survey ◽

Personal Involvement ◽

Influence Effect ◽

Information Relevance ◽

Different Types ◽

Role Of Information

Misinformation often continues to influence people’s cognition even after corrected (the ‘continued influence effect of misinformation’, the CIEM). This study investigated the role of information relevance in the CIEM by questionnaire survey and experimental study. The results showed that information with higher relevance to the individuals had a larger CIEM, indicating a role of information relevance in the CIEM. Personal involvement might explain the effects of information relevance on the CIEM. This study provides insightful clues for reducing the CIEM in different types of misinformation and misinformation with varying relevance.

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Breathing and its stimulatory responses in parkinsonism: repercussions for physiotherapy

Journal of Advanced Health Care ◽

10.36017/jahc2008-002 ◽

2020 ◽

Author(s):

Mieczyslaw Pokorski

Keyword(s):

Experimental Study ◽

Chronic Hypoxia ◽

Motor Impairments

This study addresses respiratory and motor impairments in an experimental reserpine-induced model of parkinsonism in rats. The role of chronic hypoxia due to diminished ventilation in the development and course of neurodegeneration is addressed. An attempt was made to distinguish between central and peripheral dopamine pathways in the mechanisms of neurodegeneration. A dissociation of putative mechanisms of respiratory and motor impairments is tackled as well. Although this purely experimental study cannot be directly extrapolated to human pathophysiology, the corollaries have been drawn concerning the potential repercussions of the respiratory and motor impairments for the physiotherapeutic procedures in the management of chronic neurodegeneration.

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External Investigators' Follow-Up Intentions When Whistleblowers Report Healthcare Fraud: The Effects of Report Anonymity and Previous Confrontation

Behavioral Research in Accounting ◽

10.2308/bria-19-042 ◽

2020 ◽

Vol 32 (2) ◽

pp. 91-101

Author(s):

Steven E. Kaplan ◽

Danny Lanier ◽

Kelly R. Pope ◽

Janet A. Samuels

Keyword(s):

Experimental Study ◽

Early Detection ◽

Data Availability ◽

Medical Provider ◽

Perceived Credibility ◽

The Relationship ◽

Critical Investigation

ABSTRACT Whistleblowing reports, if properly investigated, facilitate the early detection of fraud. Although critical, investigation-related decisions represent a relatively underexplored component of the whistleblowing process. Investigators are responsible for initially deciding whether to follow-up on reports alleging fraud. We report the results of an experimental study examining the follow-up intentions of highly experienced healthcare investigators. Participants, in the role of an insurance investigator, are asked to review a whistleblowing report alleging billing fraud occurring at a medical provider. Thus, participants are serving as external investigators. In a between-participant design, we manipulate the report type and whether the caller previously confronted the wrongdoer. We find that compared to an anonymous report, a non-anonymous report is perceived as more credible and follow-up intentions stronger. We also find that perceived credibility fully mediates the relationship between report type and follow-up intentions. Previous confrontation is not significantly associated with either perceived credibility or follow-up intentions. Data Availability: Data are available upon request.

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