نتایج جستجو برای: hygroscopicity

تعداد نتایج: 787  

2010
Luz T. Padró Daniel Tkacik Terry Lathem Chris J. Hennigan Amy P. Sullivan Rodney J. Weber L. Greg Huey Athanasios Nenes C. J. Hennigan A. P. Sullivan R. J. Weber

[1] We present hygroscopic and cloud condensation nuclei (CCN) relevant properties of the water‐soluble fraction of Mexico City aerosol collected upon filters during the 2006 Megacity Initiative: Local and Global Research Observations (MILAGRO) campaign. Application of ‐Köhler theory to the observed CCN activity gave a fairly constant hygroscopicity parameter ( = 0.28 ± 0.06) regardless of loca...

Journal: :Atmospheric Chemistry and Physics 2020

Journal: :Journal of the Japan Society of Engineering Geology 1987

2011
Zdeněk Jalový Robert Matyáš Jan Ottis Aleš Růžička Petr Šimůnek Miroslav Polášek

BACKGROUND Acetamidines are starting materials for synthesizing many chemical substances, such as imidazoles, pyrimidines and triazines, which are further used for biochemically active compounds as well as energetic materials. The aim of this study was to synthesise and characterise a range of acetamidinium salts in order to overcome the inconvenience connected with acetamidinium chloride, whic...

2013
Kate M. Cerully James R. Hite Molly McLaughlin Athanasios Nenes

This work presents the development and characterization of a thermodenuder for the study and interpretation of aerosol volatility. Thermodenuder measurements are further combined with a Continuous-Flow Streamwise Thermal Gradient CCN Counter (CFSTGC) to obtain the corresponding aerosol hygroscopicity. The thermodenuder response function is characterized with monodisperse aerosol of variable vol...

2010
Dean A. Hegg David S. Covert

The overarching, long-term goal of the study is to explore the profound effect of aerosol-water interaction both on radiation propagation in, and the thermodynamic structure of, the marine boundary layer. Specific goals are: 1) compile a climatology of aerosol hygroscopicity for use in the NAAPS and COAMPS models, and, further, to develop a model parameterization of hygroscopicity based on aero...

2011
T. L. Lathem P. Kumar A. Nenes J. Dufek I. N. Sokolik M. Trail A. Russell

Limited observational data exists on the physical interactions between volcanic ash particles and water vapor; yet it is thought that these interactions can strongly impact the microphysical evolution of ash, with implications for its atmospheric lifetime and transport, as well as formation of water and ice clouds. In this study, we investigate for the first time, the hygroscopic properties of ...

Journal: :Acta Silvatica et Lignaria Hungarica 2017

2013
H. J. Liu C. S. Zhao

Introduction Conclusions References

2015
Brent D. Opell Sheree F. Andrews Shannon E. Karinshak Mary A. Sigler

Each of the droplets that form an orb-weaving spider’s viscous capture thread are composed of a viscoelastic glycoprotein glue core that is surrounded by an aqueous layer and supported by a pair of protein axial fibers. Low molecular weight organic and inorganic compounds within the aqueous layer confer droplet hygroscopicity, thereby maintaining the glycoprotein’s adhesion and extensibility an...

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