Results 41 to 50 of about 2,207,935 (300)

A model to characterize soil moisture and organic matter profiles in the permafrost active layer in support of radar remote sensing in Alaskan Arctic tundra

Environmental Research Letters, 2022
Organic matter (OM) content and a shallow water table are two key variables that govern the physical properties of the subsurface within the active layer of arctic soils underlain by permafrost, where the majority of biogeochemical activities take place.
Kazem Bakian-Dogaheh, Richard H Chen, Yonghong Yi, John S Kimball, Mahta Moghaddam, Alireza Tabatabaeenejad   +5 more
doaj   +1 more source

Mathematical Modeling of Glacier Melting in the Arctic with Regard to Climate Warming

Современные информационные технологии и IT-образование, 2021
The paper studies the initial boundary-edge problem for the non-stationary one-dimensional thermal conductivity equation, which models the temperature distribution in the glacier.
Anatoliy Fedotov, Vladimir Kaniber, Pavel Khrapov   +2 more
doaj   +1 more source

Inference of the impact of wildfire on permafrost and active layer thickness in a discontinuous permafrost region using the remotely sensed active layer thickness (ReSALT) algorithm

Environmental Research Letters, 2019
The Yukon–Kuskokwim (YK) Delta is a region of discontinuous permafrost in the subarctic of southwestern Alaska. Many wildfires have occurred in the YK Delta between 1971–2015, impacting vegetation cover, surface soil moisture, and the active layer ...
Roger J Michaelides, Kevin Schaefer, Howard A Zebker, Andrew Parsekian, Lin Liu, Jingyi Chen, Susan Natali, Sarah Ludwig, Sean R Schaefer   +8 more
doaj   +1 more source

Study of electrically active defects in epitaxial layers on silicon [PDF]

, 2016
Electrically active defects in silicon-based epitaxial layers on silicon substrates have been studied by Deep-Level Transient Spectroscopy (DLTS). Several aspects have been investigated, like, the impact of the pre-epi cleaning conditions and the effect ...
Barla, K, Caymax, M, Delabie, A, Dhayalan, SK, Gencarelli, F, Gupta, S, Hikavyy, A, Jayachandran, S, Langer, R, Lauwaert, Johan, Loo, R, Rosseel, E, Simoen, Eddy, Vrielinck, Henk   +13 more
core   +1 more source

Soil Moisture Calibration Equations for Active Layer GPR Detection—a Case Study Specially for the Qinghai–Tibet Plateau Permafrost Regions

Remote Sensing, 2020
Ground-penetrating radar (GPR) is a convenient geophysical technique for active-layer soil moisture detection in permafrost regions, which is theoretically based on the petrophysical relationship between soil moisture (θ) and the soil dielectric ...
Erji Du, Lin Zhao, Defu Zou, Ren Li, Zhiwei Wang, Xiaodong Wu, Guojie Hu, Yonghua Zhao, Guangyue Liu, Zhe Sun   +9 more
doaj   +1 more source

Zonal Patterns of Changes in the Taxonomic Composition of Culturable Microfungi Isolated from Permafrost Peatlands of the European Northeast

Diversity, 2023
This paper provides the results of a study on fungal species diversity in the active and permafrost layers of peatlands within frozen peatbogs in the flatland areas of the cryolitozone, European Northeast of Russia (forest-tundra zone, southern and ...
Yulia A. Vinogradova, Vera A. Kovaleva, Evgenia M. Perminova, Olga V. Shakhtarova, Elena M. Lapteva   +4 more
doaj   +1 more source

The actin cortex as an active wetting layer

, 2013
Using active gel theory we study theoretically the properties of the cortical actin layer of animal cells. The cortical layer is described as a non-equilibrium wetting film on the cell membrane.
Joanny, Jean-Francois, Kruse, Karsten, Prost, Jacques, Ramaswamy, Sriram   +3 more
core   +2 more sources

Layer‐specific BOLD activation in human V1 [PDF]

Human Brain Mapping, 2010
AbstractThe neocortex is known to have a distinct laminar structure which has previously been probed in animals using high‐resolution fMRI. Detection of layer‐specific activation in humans has however to date proven elusive. In this study we demonstrate for the first time such layer‐specific activation, specifically at a depth corresponding to layer IV
Koopmans, Peter J., Barth, Markus, Norris, David G.   +2 more
openaire   +7 more sources

European Standard Clinical Practice Guideline and EXPeRT Recommendations for the Diagnosis and Management of Gastroenteropancreatic Neuroendocrine Neoplasms in Children and Adolescents

Pediatric Blood &Cancer, EarlyView.
ABSTRACT Pediatric gastroenteropancreatic neuroendocrine neoplasms (GEP‐NENs) are extremely rare and clinically heterogeneous. Management has largely been extrapolated from adult practice. This European Standard Clinical Practice Guideline (ESCP), developed by the EXPeRT network in collaboration with adult NEN experts, provides (adult) evidence ...
Michaela Kuhlen, Calogero Virgone, Antje Redlich, Michael Abele, Ricardo Lopez‐Almaraz, Tal Ben‐Ami, Ewa Bien, Gianni Bisogno, Maja Mazic Cesen, Andrea Ferrari, Malgorzata A. Krawczyk, Yves Reguerre, Dominik T. Schneider, Ines B. Brecht, Charlotte Rigaud, Bilgehan Yalcin, Rainer Claus, Christian Vokuhl, Constantin Lapa, Jörg Fuchs, Segolene Hescot, Thomas Walter, Julien Hadoux, Daniel Orbach   +23 more
wiley   +1 more source

Evaluation of Water Content in an Active Layer Using Penetration-Type Time Domain Reflectometry

Applied Sciences, 2018
The moisture condition of the active layer in Arctic regions can induce severe problems, such as ground subsidence and frost heave. Thus, the water content in the active layer needs to be estimated using a light and portable in-situ testing device.
Jong-Sub Lee, Won-Taek Hong, Keunbo Park, Seung Seo Hong, Sang-Ho Lee, Yong-Hoon Byun   +5 more
doaj   +1 more source