Results 31 to 40 of about 706,826 (277)

Effect of PbS Film Thickness on the Performance of Colloidal Quantum Dot Solar Cells [PDF]

open access: yesJournal of Nanostructures, 2013
Colloidal quantum dots offer broad tuning of semiconductor band structure via the quantum size effect. In this paper, we present a detailed investigation on the influence of the thickness of colloidal lead sulfide (PbS) nanocrystals (active layer) to the
M. Mazloum-Ardakani   +2 more
doaj   +1 more source

Oxygen absorption data of multilayer oxygen scavenger-polyester films with different layouts

open access: yesData in Brief, 2018
Oxygen absorption measurements in continuous regard active multilayer films with different layouts, all incorporating a PET/Oxygen scavenger (OS) layer, operating as active O2 barrier, inserted between two PET inert layers, acting as passive O2 barrier ...
A. Apicella   +3 more
doaj   +1 more source

Hall generator with variable active-layer thickness

open access: yesElectronics Letters, 1967
The principle of operation of a new semiconductor device, a Hall generator with a variable-thickness active layer, is discussed. Such a device results from the location of a p-n junction in close proximity to the surface of a semiconductor plate, thus isolating the thin active layer of the Hall generator from the base. Two additional electrodes, one on
T. Janicki, A. Kobus
openaire   +1 more source

Localized Vegetation, Soil Moisture, and Ice Content Offset Permafrost Degradation under Climate Warming

open access: yesGeosciences, 2023
Rapid Arctic warming is expected to result in widespread permafrost degradation. However, observations show that site-specific conditions (vegetation and soils) may offset the reaction of permafrost to climate change.
Gleb E. Oblogov   +4 more
doaj   +1 more source

Recent massive expansion of wildfire and its impact on active layer over pan-Arctic permafrost

open access: yesEnvironmental Research Letters, 2023
Wildfire is recognized as an increasing threat to the southern boreal forests and the permafrost beneath them, with less occurring over the cold continuous permafrost than before.
Xingru Zhu, Xiyan Xu, Gensuo Jia
doaj   +1 more source

A single-layer tuneable microwave absorber using an active FSS [PDF]

open access: yes, 2004
An experimental single-layer active microwave absorber in described. The absorber is a planar structure based upon the topology of a Salisbury screen, but in which the conventional resistive layer is replaced by an active frequency selective surface (FSS)
Chambers, B., Tennant, A.
core   +1 more source

Fluid transport in a thick layer above an active ciliated surface

open access: yesBiophysical Journal, 1980
The discrete cilia approach is employed to describe the flow field above an active ciliated surface in a layer of finite depth. The infinite-size cilia surface model predicts a uniform flow above the cilia surface. Modifications as a result of a finitely extending cilia surface inside a finite-size dish predict a backward parabolic profile above an ...
Liron, N., Meyer, F.A.
openaire   +3 more sources

Influences of forest fires on the permafrost environment: A review

open access: yesAdvances in Climate Change Research, 2021
In boreal and arctic regions, forest fires exert great influences on biogeochemical processes, hydrothermal dynamics of the active layer and near-surface permafrost, and subsequent nutrient cycles.
Xiao-Ying Li   +10 more
doaj   +1 more source

Strong light-matter coupling in bulk GaN-microcavities with double dielectric mirrors fabricated by two different methods [PDF]

open access: yes, 2010
Two routes for the fabrication of bulk GaN microcavities embedded between two dielectric mirrors are described, and the optical properties of the microcavities thus obtained are compared.
Bejtka, K.   +11 more
core   +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

open access: yesEnvironmental 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   +8 more
doaj   +1 more source

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