Results 241 to 250 of about 617,235 (290)
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Clustering of ice nucleation protein correlates with ice nucleation activity
Cryobiology, 1990Antibodies raised against a synthetic peptide specifically detect ice nucleation proteins from Pseudomonas species in Western blots. In immunofluorescent staining of whole bacteria, the antibodies reveal the protein in clusters, as indicated by patches of intense fluorescence in Escherichia coli cells heterologously expressing Pseudomonas ice ...
G M, Mueller, P K, Wolber, G J, Warren
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The effect of ice-nucleating agents on ice-nucleating activity
Cryobiology, 1988Abstract The effect of ice-nucleating agents on nucleating activity was studied by the use of nucleators from the hemolymph of freeze-tolerant E. blanchardi beetles and from the central fluid of the alpine plant L. telekii. The nucleators from the plant were found to have a higher specific activity than those from the beetle.
Karl Erik Zachariassen, Harold T. Hammel
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Ice Nucleation and Antinucleation in Nature
Cryobiology, 2000Plants and ectothermic animals use a variety of substances and mechanisms to survive exposure to subfreezing temperatures. Proteinaceous ice nucleators trigger freezing at high subzero temperatures, either to provide cold protection from released heat of fusion or to establish a protective extracellular freezing in freeze-tolerant species.
K E, Zachariassen, E, Kristiansen
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Identification of an ice-nucleating bacterium and its ice nucleation properties
Journal of Fermentation and Bioengineering, 1989Abstract An ice-nucleating bacterium, KUIN-2, was isolated from carrot leaves. The ice-nucleating bacterium was found in the white colony group. KUIN-2 was identified as Pseudomonas viridiflava from its taxonomic characteristics. When KUIN-2 was cultured aerobically in a medium consisting of Trypticase soy broth (pH 6.0) for 24 h at 18°C, the ice ...
Hitoshi Obata +3 more
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Ice nucleation active site-independent stochasticity in heterogeneous ice nucleation
2023Clouds are central elements of the hydrological cycle and climate. They are responsible for precipitation and strongly impact global and regional temperature by reflecting incoming solar radiation, and absorbing heat emitted from Earth. The amount of ice contained in clouds determines much of their properties and their impact on climate.
Mária Lbadaoui-Darvas +2 more
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Ice nucleation temperatures in kiwifruit
Scientia Horticulturae, 1995Abstract The formation of ice in detached kiwifruit (Actinidia deliciosa) fruit was investigated in a freeze chamber by thermal analysis. Ice nucleation (IN) occurred between −3.1 and −4.9 °C. The distribution of IN temperatures followed a normal distribution with a mean (± SD) at −3.9 +- 0.5 °C.
TESTOLIN, Raffaele, COSTA, Guglielmo
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The Journal of Chemical Physics, 2005
The mechanism of heterogeneous ice nucleation on inorganic substrates is not well understood despite work on AgI and other materials over the past 50years. We have selected BaF2 as a model substrate for study since its (111) surface makes a near perfect match with the lattice of the basal face of Ih ice and would appear to be an ideal nucleating agent.
Peter, Conrad +3 more
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The mechanism of heterogeneous ice nucleation on inorganic substrates is not well understood despite work on AgI and other materials over the past 50years. We have selected BaF2 as a model substrate for study since its (111) surface makes a near perfect match with the lattice of the basal face of Ih ice and would appear to be an ideal nucleating agent.
Peter, Conrad +3 more
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Ice nucleation on hydrophilic silicon
The Journal of Chemical Physics, 2008We have used Fourier transform infrared spectroscopy to study thin water films on a hydrophilic silicon surface in the temperature range from 20to−20°C. Throughout that range, the spectra of the water adjacent to the silicon surface are consistent with that of bulk water near 25°C. Thicker films (>1μm) freeze at −11±1°C.
Eli, Ochshorn, Will, Cantrell
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1993
Publisher Summary This chapter investigates the ability of certain biological systems to initiate physical processes in metastable systems. The best-characterized biological initiators are bacterial ice nuclei that trigger crystallization of ice from supercooled water. The ice-nucleating bacteria are members of plant epiphytic communities.
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Publisher Summary This chapter investigates the ability of certain biological systems to initiate physical processes in metastable systems. The best-characterized biological initiators are bacterial ice nuclei that trigger crystallization of ice from supercooled water. The ice-nucleating bacteria are members of plant epiphytic communities.
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Journal of the Atmospheric Sciences, 1963
Abstract Ice was grown in a cold chamber mounted on a Vickers Projection Microscope and so constructed that the temperature and humidity could be independently controlled. Observations were made (magnification 280×to 560×) of the growth of ice crystals on a freshly-cleaved mica substrate.
Richard G. Layton, Franklin S. Harris
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Abstract Ice was grown in a cold chamber mounted on a Vickers Projection Microscope and so constructed that the temperature and humidity could be independently controlled. Observations were made (magnification 280×to 560×) of the growth of ice crystals on a freshly-cleaved mica substrate.
Richard G. Layton, Franklin S. Harris
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