Zobrazeno 1 - 10
of 24
pro vyhledávání: '"Brian D. Swanson"'
Autor:
Jon Nelson, Brian D. Swanson
Often overlooked in studies of ice growth is how the crystal faces grow laterally. This paper explores the implications of such lateral-type growth and how it may explain air pockets and other secondary features of vapor-grown ice in air. For example
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::7f6cc8601a00a0b22fda59b304050711
https://www.atmos-chem-phys-discuss.net/acp-2019-280/
https://www.atmos-chem-phys-discuss.net/acp-2019-280/
Autor:
Brian D. Swanson
Publikováno v:
Journal of the Atmospheric Sciences. 66:741-754
Frozen fraction measurements made using a droplet free-fall freezing tube apparatus are presented and used, along with other recent laboratory measurements, to evaluate how well both the water activity idea and the translated melting-point curve idea
Publikováno v:
Cryobiology. 52:417-429
Direct evidence for metabolism in a variety of frozen environments has pushed temperature limits for bacterial activity to increasingly lower temperatures, so far to -20 degrees C. To date, the metabolic activities of marine psychrophilic bacteria, i
Autor:
Ben Larson, Brian D. Swanson
Publikováno v:
The Journal of Physical Chemistry A. 110:1907-1916
We have measured the light scattering intensity and homogeneous ice nucleation temperatures from water droplets containing 0-33 wt % ammonium sulfate. In these laboratory experiments, we used a free-fall freezing tube technique to determine the fract
Publikováno v:
Applied Spectroscopy. 59:1222-1228
Psychro-active bacteria, important constituents of polar ecosystems, have a unique ability to remain active at temperatures below 0 °C, yet it is not known to what extent the composition of their outer cell surfaces aids in their low-temperature via
Publikováno v:
Quarterly Journal of the Royal Meteorological Society. 129:1903-1927
We describe experiments to investigate the first stages in the evolution of small (100–200 µm) ice crystals levitated in air at temperatures and humidities characteristic of fully glaciated stratiform clouds. We find that in these conditions parti
Publikováno v:
Review of Scientific Instruments. 73:3988-3996
We have developed an instrument to study the homogeneous and heterogeneous freezing of droplets in free fall. The advantages of this technique are high repetition rates, telemicroscopic imaging of frozen and unfrozen droplets, and the elimination of
Publikováno v:
Journal of Aerosol Science. 32:1315-1339
The problem of non-isothermal quasi-steady state evaporation and condensation of aerosol spheres is examined to determine the rates of simultaneous heat and mass transport in the Knudsen (transition) regime. New expressions for the mass and heat 5uxe
Publikováno v:
Journal of Colloid and Interface Science. 238:147-159
We have investigated two previous experimental studies (Clapsaddle and Lamb, 1989; Conklin et al. 1989) of SO(2) uptake into polycrystalline ice the results of which seem to conflict. Both studies employed porous packed beds prepared by freezing 200-
Autor:
N.J. Bacon, Brian D. Swanson
Publikováno v:
Journal of the Atmospheric Sciences. 57:2094-2104
The authors have measured the differential light-scattering cross sections and phase functions of single vapor-grown hexagonal ice particles levitated in an electrodynamic balance. The ice particles, grown at temperatures −5° > T > −10°C, were