Results 21 to 30 of about 232,557 (212)

Cost-effectiveness of freeze-all policy – A retrospective study based upon the outcome of cumulative live births

open access: yesTaiwanese Journal of Obstetrics & Gynecology, 2021
Object: We have previously reported that cumulative live birth rates (CLBRs) are higher in the freeze-all group compared with controls (64.3% vs. 45.8%, p = 0.001).
Jui-Chun Chang   +7 more
doaj   +1 more source

Ice Freeze‐Up and Break‐Up in Arctic Rivers Observed With Satellite L‐Band Passive Microwave Data From 2010 to 2020

open access: yesWater Resources Research, 2023
The timing of ice freeze‐up and break‐up in the Arctic may be responding to climate change. Passive microwave remote sensing is a powerful technique for monitoring this timing.
A. Podkowa   +3 more
doaj   +1 more source

Selective Exclusion of Aromatic Organic Carbon During Lake Ice Formation

open access: yesGeophysical Research Letters, 2023
Earth's lakes at northern latitudes are mostly ice‐covered in winter. When lake water freezes, some organic matter dissolved in the water is excluded from the ice.
Yongqiang Zhou   +7 more
doaj   +1 more source

Study on Deformation Characteristics and Damage Model of NMK Concrete under Cold Environment

open access: yesBuildings, 2022
To improve the ability of concrete structures to resist freeze-thaw damage in cold environments, explore the effect and mechanism of nano-metakaolin (NMK) on frost resistance of concrete.
Shiyi Zhang   +2 more
doaj   +1 more source

Estimating Arctic sea-ice freeze-up and break-up from the satellite record: A comparison of different approaches in the Chukchi and Beaufort Seas

open access: yesElementa: Science of the Anthropocene, 2016
1. Abstract The recognized importance of the annual cycle of sea ice in the Arctic to heat budgets, human behavior, and ecosystem functions, requires consistent definitions of such key events in the ice cycle as break-up and freeze-up.
Mark Johnson, Hajo Eicken
doaj   +1 more source

Effects of River Geomorphology on River Ice Freeze-up and Break-up Rates Using MODIS Imagery

open access: yesCanadian Journal of Remote Sensing, 2019
Evaluating driving factors of river ice freeze-up and break-up is critical for the understanding associated with river ice processes, as well as for providing a means to predict potential natural hazards of river ice formation or deformation ...
Thuan Chu, Karl-Erich Lindenschmidt
doaj   +1 more source

First recorded ice entrapment of a beluga whale (Delphinapterus leucas) in east Greenland

open access: yesPolar Research
Beluga whales are rare along the coast of east Greenland and the closest recognized stock occurs around Svalbard. Here we report on an ice entrapment of an adult beluga whale (Delphinapterus leucas) in north-east Greenland.
Kristin L. Laidre   +4 more
doaj   +1 more source

Long-term variability of ice regime characteristics in river mouth areas of the western coast of the White Sea on the background of climatic changes

open access: yesЛëд и снег
The paper presents results of the comprehensive study of the long-term variability of the main elements of the ice regime for the period 1955–2020 in mouth areas of the rivers Gridina, Kuzema, Pongoma,Kem, Shuya, Nizhny Vyg, Suma, Nyukhcha and Maloshuika
V. N. Baklagin, N. I. Mahalskaya
doaj   +1 more source

Polymer chain in a quenched random medium: slow dynamics and ergodicity breaking

open access: yes, 2002
The Langevin dynamics of a self - interacting chain embedded in a quenched random medium is investigated by making use of the generating functional method and one - loop (Hartree) approximation.
Migliorini, Gabriele   +2 more
core   +3 more sources

Effects of seasonability and variability of streamflow on nearshore coastal areas: final report [PDF]

open access: yes, 1977
General nature and scope of the study: This study examines the variability of streamflow in all gaged Alaskan rivers and streams which terminate in the ocean. Forty-one such streams have been gaged for varying periods of time by the U. S.
Carlson, Robert F.   +2 more
core  

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