Results 21 to 30 of about 859,907 (314)

Norway and past International Polar Years—a historical account [PDF]

open access: yes, 2007
Surveying Norway’s role in past International Polar Years (IPYs), this essay by historian Stian Bones contributes to a broader understanding of Norway as a “polar nation”. He describes the strengths of Norway’s scientific traditions in the polar regions,
Bones, Stian, Stian Bones
core   +1 more source

Neuronal Polarity [PDF]

open access: yesCold Spring Harbor Perspectives in Biology, 2009
The assembly of functional neuronal networks in the developing animal relies on the polarization of neurons, i.e., the formation of a single axon and multiple dendrites. Breaking the symmetry of neurons depends on cytoskeletal rearrangements. In particular, axon specification requires local dynamic instability of actin and stabilization of microtubules.
Tahirovic, S., Bradke, F.
openaire   +3 more sources

Polar bears killed in Svalbard 1987–1992 [PDF]

open access: yes, 1993
A total of 26 polar bears have been killed in Svalbard since January 1987. Fifteen of these cases were self defense, four precautionary measures, six acts of mercy and one unknown.
Gjertz, Ian   +2 more
core   +1 more source

American Polar Society Symposium 2003 [PDF]

open access: yes, 2003
Women's Roles in Polar Regions: Past, Present, and Future. American Polar Society Symposium 2003. Byrd Polar Research Center, The Ohio State University, Columbus, Ohio, October 9-10, 2003.Byrd Polar Research Center, The Ohio State UniversityAmerican ...
Byrd Polar Research Center
core   +1 more source

Polarized cells, polar actions

open access: yesJournal of Bacteriology, 1993
The recognition of polar bacterial organization is just emerging. The examples of polar localization given here are from a variety of bacterial species and concern a disparate array of cellular functions. A number of well-characterized instances of polar localization of bacterial proteins, including the chemoreceptor complex in both C. crescentus and E.
J R, Maddock, M R, Alley, L, Shapiro
openaire   +3 more sources

Guest editorial—the ballyhoo over polar bears [PDF]

open access: yes, 2009
Critics have said that there’s little or no justification for the focus that polar bears (Ursus maritimus) have received as a threatened species. Recent studies project dramatic reductions in polar bear numbers in just a few decades, in concert with the ...
Vongraven, Dag
core   +1 more source

Review of Climate change in the polar regions, by John Turner & Gareth J. Marshall [PDF]

open access: yes, 2012
In this ambitious, cross-disciplinary volume, British Antarctic Survey scientists John Turner and Gareth Marshall synthesize what is known about climate change in the Arctic and Antarctic and compare the changes that have occurred in the two polar ...
Orheim, Olav
core   +1 more source

Networks of international co-authorship in journal articles about Antarctic research, 1998–2015

open access: yesPolar Research, 2020
This study seeks insight into the social structure of Antarctic research from 1998 to 2015 by examining peer-reviewed journal articles listed in the Science Citation Index of the Web of Science database.
Duckhee Jang, Soogwan Doh, Yongjin Choi
doaj   +1 more source

Applications of biogeochemical models in different marine environments: a review

open access: yesFrontiers in Environmental Science, 2023
Marine biogeochemical models are an effective tool for formulating hypothesis and gaining mechanistic understanding of how an ecosystem functions. This paper presents a comprehensive review of biogeochemical models and explores their applications in ...
Kaltham A. Ismail, Maryam R. Al-Shehhi
doaj   +1 more source

The polarization properties of a tilted polarizer

open access: yesOptics Express, 2013
Polarizers are key components in optical science and technology. Thus, understanding the action of a polarizer beyond oversimplifying approximations is crucial. In this work, we study the interaction of a polarizing interface with an obliquely incident wave experimentally.
Korger, J.   +6 more
openaire   +4 more sources

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