Results 21 to 30 of about 232,915 (212)

Everyday referenced use of a digital temperature sensor – how well do alternative ice cubes really cool a drink?

open access: yesChemistry Teacher International, 2023
In this paper, the cooling effect of alternative ice cubes made of granite, soapstone and ceramic is experimentally examined with the help of a digital temperature sensor and compared with that of a conventional ice cube.
Fleischer Timo   +3 more
doaj   +1 more source

Glaciochemistry of Cave Ice: Paradana and Snežna Caves, Slovenia

open access: yesGeosciences, 2019
Cave ice samples collected within karstic terrain have major ion and nutrient concentrations showing that the ice originates from local precipitation modified by the addition of Ca2+ and HCO3− from the dissolution of the local bedrock.
Anne E. Carey   +7 more
doaj   +1 more source

Variability in sea ice carbonate chemistry: a case study comparing the importance of ikaite precipitation, bottom-ice algae, and currents across an invisible polynya [PDF]

open access: yesThe Cryosphere, 2022
The carbonate chemistry of sea ice is known to play a role in global carbon cycles, but its importance is uncertain in part due to disparities in reported results.
B. G. T. Else   +11 more
doaj   +1 more source

Ice core chemistry of Vestfonna Ice Cap in Svalbard, Norway [PDF]

open access: yesJournal of Geophysical Research: Atmospheres, 2002
Chemical analyses were done on samples from a 2.2‐m deep snow pit and a 211‐m deep ice core that came from the top of the Vestfonna Ice Cap in Nordaustlandet, Svalbard, Norway. The snow pit samples showed that the temperature increased during the winter owing to advection of warm air from the south, and δ18O did not show a seasonal cycle. Chronology of
Sumito Matoba   +4 more
openaire   +1 more source

Observation of the Reversible Ice III to Ice IX Phase Transition by Using Ammonium Fluoride as Anti-Ice II Agent

open access: yes, 2020
Ice III is a hydrogen-disordered phase of ice that is stable between about 0.2 and 0.35 GPa. Upon cooling, it transforms to its hydrogen-ordered counterpart ice IX within the stability region of ice II.
Craig L., Bull   +4 more
core   +1 more source

Atmospheric impact of the 1783-1784 Laki eruption: Part I Chemistry modelling. [PDF]

open access: yes, 2003
Results from the first chemistry-transport model study of the impact of the 1783–1784 Laki fissure eruption (Iceland: 64°N, 17°W) upon atmospheric composition are presented.
Stevenson, D. S.; id_orcid   +17 more
core   +1 more source

ICE CHEMISTRY IN STARLESS MOLECULAR CORES [PDF]

open access: yesThe Astrophysical Journal, 2015
Starless molecular cores are natural laboratories for interstellar molecular chemistry research. The chemistry of ices in such objects was investigated with a three-phase (gas, surface, and mantle) model. We considered the center part of five starless cores, with their physical conditions derived from observations. The ice chemistry of oxygen, nitrogen,
openaire   +2 more sources

Development of a Bioaerosol single particle detector (BIO IN) for the Fast Ice Nucleus CHamber FINCH [PDF]

open access: yes, 2010
In this work we present the setup and first tests of our new BIO IN detector. This detector was constructed to classify atmospheric ice nuclei (IN) for their biological content. It is designed to be coupled to the Fast Ice Nucleus CHamber FINCH.
U. Bundke   +9 more
core   +1 more source

The anomalous pressure drop behaviour of ice slurries flowing through constrictions [PDF]

open access: yes, 2008
The effective ‘viscosity’ for ice slurry containing more than say 30 to 40% ice fraction is many orders of magnitude higher than that for water. However, this work suggests that such slurries, when flowing through constrictions, can incur lower pressure ...
Rhys, T. D. L.   +3 more
core   +1 more source

Impact and implications of meltwater percolation on trace element records observed in a high-Alpine ice core

open access: yesJournal of Glaciology, 2018
Past atmospheric pollution can be reconstructed from ice core trace element records retrieved from mountain glaciers. However, the current global temperature increase can result in post-depositional melt processes, significantly altering the originally ...
SVEN ERIK AVAK   +2 more
doaj   +1 more source

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