搜索结果: 1-15 共查到“理学 ice nucleation”相关记录17条 . 查询时间(0.069 秒)
The ice nucleation ability of one of the most abundant types of fungal spores found in the atmosphere
the most abundant types fungal spores the atmosphere
2011/2/25
Recent atmospheric measurements show that biological particles are a potentially important class of ice nuclei. Types of biological particles that may be good ice nuclei include bacteria, pollen and f...
Manchester Ice Nucleus Counter (MINC) measurements from the 2007 International workshop on Comparing Ice nucleation Measuring Systems (ICIS-2007)
Manchester Ice Nucleus Counter the 2007 International workshop Ice nucleation Measuring Systems
2011/1/18
An ice nucleus counter was developed and constructed to enable investigation of potential ice nucleating materials. The Manchester Ice Nucleus Chamber (MINC) is a concentric-cylinder continuous flow d...
Irreversible loss of ice nucleation active sites in mineral dust particles caused by sulphuric acid condensation
ice nucleation active sites mineral dust particles sulphuric acid condensation
2010/12/20
During the FROST-2 (FReezing Of duST) measurement campaign conducted at the Leipzig Aerosol Cloud Interaction Simulator (LACIS), we investigated changes in the ice nucleation properties of 300 nm Ariz...
High variability of the heterogeneous ice nucleation potential of oxalic acid dihydrate and sodium oxalate
the heterogeneous ice nucleation oxalic acid dihydrate sodium oxalate
2010/8/25
The heterogeneous ice nucleation potential of airborne oxalic acid dihydrate and sodium oxalate particles in the deposition and condensation mode has been investigated by controlled expansion cooling ...
Depositional ice nucleation on solid ammonium sulfate and glutaric acid particles
Depositional ice nucleation solid ammonium sulfate glutaric acid particles
2010/3/16
Heterogeneous ice nucleation on solid ammonium sulfate and glutaric acid particles was studied using optical microscopy and Raman spectroscopy. Optical microscopy was used to detect selective nucleati...
Ice nucleation and cloud microphysical properties in tropical tropopause layer cirrus
Ice nucleation cloud microphysical properties tropical tropopause layer cirrus
2010/2/21
In past modeling studies, it has generally been assumed that the predominant mechanism for nucleation of ice in the uppermost troposphere is homogeneous freezing of aqueous aerosols. However, recent i...
Ice nucleation properties of mineral dust particles: determination of onset RHi, IN active fraction, nucleation time-lag, and the effect of active sites on contact angles
mineral dust particles onset RHi IN active fraction nucleation time-lag
2010/1/18
A newly developed ice nucleation experimental set up was used to investigate the heterogeneous ice nucleation properties of three Saharan and one Spanish dust particle samples. It was observed that th...
A new thermal gradient ice nucleation diffusion chamber instrument:design,development and first results using Saharan mineral dust
thermal gradient ice nucleation diffusion chamber instrument Saharan mineral dust
2010/2/8
A new Thermal Gradient ice nucleation Diffusion Chamber (TGDC) capable of investigating ice nucleation efficiency of atmospherically important aerosols, termed Ice Nuclei (IN), has been designed, cons...
Ice nucleation by surrogates for atmospheric mineral dust and mineral dust/sulfate particles at cirrus temperatures
Ice nucleation atmospheric mineral dust mineral dust/sulfate particles cirrus temperatures
2009/2/18
This study examines the potential role of some types of mineral dust and mineral dust with sulfuric acid coatings as heterogeneous ice nuclei at cirrus temperatures. Commercially-available nanoscale p...
Probing ice clouds by broadband mid-infrared extinction spectroscopy: case studies from ice nucleation experiments in the AIDA aerosol and cloud chamber
Probing ice clouds broadband mid-infrared extinction spectroscopy ice nucleation experiments AIDA aerosol cloud chamber
2009/1/16
Series of infrared extinction spectra of ice crystals were recorded in the 6000–800 cm−1 wavenumber regime during expansion cooling experiments in the large aerosol and cloud chamber AIDA of For...
Some ice nucleation characteristics of Asian and Saharan desert dust
Some ice nucleation characteristics Asian Saharan desert dust
2009/1/13
The large (7 m×4 m cylinder, 84 m3) AIDA (Aerosol Interactions and Dynamics in the Atmosphere) cloud chamber facility at Forschungszentrum, Karlsruhe, Germany was used to test the ice nucleating abili...
Efficiency of immersion mode ice nucleation on surrogates of mineral dust
ice nucleation mineral dust
2008/12/22
A differential scanning calorimeter (DSC) was used to explore heterogeneous ice nucleation of emulsified aqueous suspensions of two Arizona test dust (ATD) samples with particle diameters of nominally...
Ice nucleation of ammonia gas exposed montmorillonite mineral dust particles
Ice nucleation ammonia gas montmorillonite mineral dust particles
2008/12/15
The ice nucleation characteristics of montmorillonite mineral dust aerosols with and without exposure to ammonia gas were measured at different atmospheric temperatures and relative humidities with a ...
Technical Note: A numerical test-bed for detailed ice nucleation studies in the AIDA cloud simulation chamber
ice nucleation AIDA cloud simulation chamber
2008/11/27
The AIDA (Aerosol Interactions and Dynamics in the Atmosphere) aerosol and cloud chamber of Forschungszentrum Karlsruhe can be used to test the ice forming ability of aerosols. The AIDA chamber is ex...
Heterogeneous ice nucleation activity of bacteria:new laboratory experiments at simulated cloud conditions
Heterogeneous ice nucleation activity bacteria laboratory experiments cloud conditions
2010/1/18
The ice nucleation activities of five different Pseudomonas syringae, Pseudomonas viridiflava and Erwinia herbicola bacterial species and of Snomax™ were investigated in the temperature range be...