Results 21 to 30 of about 12,512 (204)

Moral Distress, Health and Intention to Leave: Critical Care Nurses’ Perceptions During COVID-19 Pandemic

open access: yesSAGE Open Nursing, 2023
Introduction Moral distress increases the risk that critical care nurses will lose the ability to provide quality nursing care. Aims To describe person-related conditions and perceptions of moral distress, health and intention to leave among critical ...
Maria Andersson PhD, CCN, RN   +3 more
doaj   +1 more source

Variation of CCN activity during new particle formation events in the North China Plain [PDF]

open access: yesAtmospheric Chemistry and Physics, 2016
The aim of this investigation was to obtain a better understanding of the variability of the cloud condensation nuclei (CCN) activity during new particle formation (NPF) events in an anthropogenically polluted atmosphere of the North China Plain (NCP).
N. Ma   +19 more
doaj   +1 more source

Examination of aerosol impacts on convective clouds and precipitation in two metropolitan areas in East Asia; how varying depths of convective clouds between the areas diversify those aerosol effects? [PDF]

open access: yesAtmospheric Chemistry and Physics, 2022
This study examines the role played by aerosols which act as cloud condensation nuclei (CCN) in the development of clouds and precipitation in two metropolitan areas in East Asia that have experienced substantial increases in aerosol concentrations over ...
S. S. Lee   +14 more
doaj   +1 more source

A closure study of cloud condensation nuclei in the North China Plain using droplet kinetic condensational growth model [PDF]

open access: yesAtmospheric Chemistry and Physics, 2012
Aerosol size distribution and cloud condensation nucleus (CCN) number concentration were measured in the North China Plain from 31 December 2009 to 20 January 2010.
F. Yang   +4 more
doaj   +1 more source

Scanning Flow CCN Analysis—A Method for Fast Measurements of CCN Spectra [PDF]

open access: yesAerosol Science and Technology, 2009
The Continuous-Flow Streamwise Thermal-Gradient Cloud Condensation Nuclei Counter is a commercially available instrument that is widely used for laboratory and field measurements of cloud condensation nuclei (CCN). Typically, the instrument is operated at a constant flow rate, and supersaturation is adjusted by changing the column streamwise ...
Moore, R. H., Nenes, Athanasios
openaire   +2 more sources

Impacts of new particle formation on aerosol cloud condensation nuclei (CCN) activity in Shanghai: case study [PDF]

open access: yesAtmospheric Chemistry and Physics, 2014
New particle formation (NPF) events and their impacts on cloud condensation nuclei (CCN) were investigated using continuous measurements collected in urban Shanghai from 1 to 30 April 2012.
C. Leng   +15 more
doaj   +1 more source

Assessment of CALIOP-Derived CCN Concentrations by In Situ Surface Measurements

open access: yesRemote Sensing, 2022
The satellite-based cloud condensation nuclei (CCN) proxies used to quantify the aerosol-cloud interactions (ACIs) are column integrated and do not guarantee the vertical co-location of aerosols and clouds.
Goutam Choudhury, Matthias Tesche
doaj   +1 more source

Calibration and evaluation of a broad supersaturation scanning (BS2) cloud condensation nuclei counter for rapid measurement of particle hygroscopicity and cloud condensation nuclei (CCN) activity [PDF]

open access: yesAtmospheric Measurement Techniques, 2021
For understanding and assessing aerosol–cloud interactions and their impact on climate, reliable measurement data on aerosol particle hygroscopicity and cloud condensation nuclei (CCN) activity are required.
N. Kim   +8 more
doaj   +1 more source

Droplet activation of wet particles: development of the Wet CCN approach [PDF]

open access: yesAtmospheric Measurement Techniques, 2014
Relationships between critical supersaturation required for activation and particle dry diameter have been the primary means for experimentally characterizing cloud condensation nuclei (CCN) activity; however, use of the dry diameter inherently limits ...
S. Nakao   +4 more
doaj   +1 more source

A Numerical Study of Aerosol Effects on Electrification with Different Intensity Thunderclouds

open access: yesAtmosphere, 2019
Numerical simulations are performed to investigate the effect of varying CCN (cloud condensation nuclei) concentration on dynamic, microphysics, electrification, and charge structure in weak, moderate, and severe thunderstorms.
Zheng Shi   +4 more
doaj   +1 more source

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