Results 81 to 90 of about 5,683,359 (349)

Stock identity of beluga (Delphinapterus leucas) in Eastern Canada and West Greenland based on organochlorine contaminants in their blubber

open access: yesNAMMCO Scientific Publications, 2002
Belugas (Delphinapterus leucas) caught by hunters from various hamlets in the Arctic differed in the concentrations of organochlorine contaminants in their blubber.
Stuart Innes   +4 more
doaj   +1 more source

Short-lived climate forcers from current shipping and petroleum activities in the Arctic [PDF]

open access: yes, 2012
Emissions of short-lived climate forcers (SLCF) in the Arctic region are expected to increase, notably from shipping and petroleum extraction. We here discuss changes in atmospheric SLCF concentrations and resulting radiative forcing (RF) from present ...
B. H. Samset   +5 more
core   +1 more source

Structural insights into an engineered feruloyl esterase with improved MHET degrading properties

open access: yesFEBS Letters, EarlyView.
A feruloyl esterase was engineered to mimic key features of MHETase, enhancing the degradation of PET oligomers. Structural and computational analysis reveal how a point mutation stabilizes the active site and reshapes the binding cleft, expading substrate scope.
Panagiota Karampa   +5 more
wiley   +1 more source

Strategy of the Italian Republic in the Arctic [PDF]

open access: yesАрктика и Север, 2016
This article is devoted to analysis of the interests of the Italian Republic in the Arctic. Despite the geographical distance Italy from the Arctic, the interest of Italians to the Arctic cooperation is due to historical reasons: Italians participated in
Maria L. Lagutina
doaj   +1 more source

Controls on zooplankton assemblages in the northeastern Chukchi Sea [PDF]

open access: yes, 2016
Thesis (Ph.D.) University of Alaska Fairbanks, 2016The Chukchi Sea is a broad and shallow marginal sea of the western Arctic Ocean that lies between the Bering Sea and the deeper Amerasian basin.
Questel, Jennifer
core  

Hyperosmotic stress induces PARP1‐mediated HPF1‐dependent mono(ADP‐ribosyl)ation

open access: yesFEBS Letters, EarlyView.
Sorbitol‐induced hyperosmotic stress rapidly induces reversible mono(ADP‐ribosyl)ation (MARylation) on PARP1 without the signs of genotoxic signaling. We show that PARP1 autoMARylation is HPF1 dependent and forms hydroxylamine‐resistant O‐glycosidic linkages.
Anna Georgina Kopasz   +11 more
wiley   +1 more source

Evolutionary characteristics of export trade network in the Arctic region

open access: yesRegional Sustainability
The economic potential induced by environmental changes in the Arctic region garnered substantial interest, which positions Arctic trade as a crucial indicator in forecasting the impacts of climate change on the global economy.
Xing Ma   +6 more
doaj   +1 more source

Sound absorption in Arctic regions [PDF]

open access: yesThe Journal of the Acoustical Society of America, 1987
Sound absorption in seawater involves relaxations of magnesium sulfate, boric acid, and magnesium carbonate. Absorption varies with both region and depth, due mainly to the pH dependence of the boric acid relaxation. The nominal seawater pH range is 7.7–8.3 and magnitudes can vary over nearly a factor of 4 at low frequencies.
R. H. Mellen   +2 more
openaire   +1 more source

Assessment of contemporary Arctic river runoff based on observational discharge records [PDF]

open access: yes, 2001
We describe the contemporary hydrography of the pan‐Arctic land area draining into the Arctic Ocean, northern Bering Sea, and Hudson Bay on the basis of observational records of river discharge and computed runoff.
Fekete, Balazs M.   +4 more
core   +1 more source

Variation in the seston C:N ratio of the Arctic Ocean and pan-Arctic shelves [PDF]

open access: yes, 2014
Studying more than 3600 observations of particulate organic carbon (POC) and particulate organic nitrogen (PON), we evaluate the applicability of the classic Redfield C:N ratio (6.6) and the recently proposed Sterner ratio (8.3) for the Arctic Ocean and ...
Andersen, Tom   +4 more
core   +1 more source

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