Results 31 to 40 of about 217,901 (291)

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

Determination of the thicknesses of the active layer and cathode limiting currents in AFC

open access: yesElectrochemistry Communications, 2004
Abstract A series of double-layered gas diffusion electrodes with two different electrocatalysts, i.e., Ag and pyrolyzed macrocycle mixture (PMM) were prepared in order to find out the maximum limiting current densities ( i L ) by varying the oxygen partial pressures in 6 M KOH and at 65 °C.
Yohannes Kiros   +2 more
openaire   +2 more sources

Effects of Effective Layer Thickness, Light Intensity and Electron-Hole Pair Separation Distance on The Performance of Organic Bulk Heterojunction Solar Cells [PDF]

open access: yesJournal of Optoelectronical Nanostructures
In this paper the influence of different parameters such as active layer thickness, light intensity and charge separation distance on the photocurrent-voltage, short circuit current density (Jsc) and open circuit voltage (Voc) characteristics in MEH-PPV ...
Aliasghar Ayobi
doaj   +1 more source

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

Non-fullerene OSC: The effects of active and electron transport layers' thickness towards 19.5% efficiency

open access: yesRevue des Énergies Renouvelables
The effects of the active layer thickness of the organic solar cells based on PM6, D18 and L8-BO materials as well as the effects of electron transport layer thickness are examined using Organic and hybrid Material Nano Simulation (Oghma) software ...
Burak Yahya Kadem, R.K. Fakher Alfahed
doaj   +1 more source

Seasonal progression of active-layer thickness dependent on microrelief

open access: yes, 2004
Introduction Active-layer thickness is a major factor for all physical and biological processes in permafrost soils. It is closely related to the fluxes of energy, water and carbon between permafrost landscapes and the atmosphere. Active-layer thickness
Kutzbach, Lars   +4 more
openaire   +2 more sources

Permafrost, Active Layer Thickness and Soil Organic Carbon Maps over the Tibetan Plateau

open access: yes, 2019
Using recent observations of mean annual ground temperature (MAGT) at or near (the closest to) the depth of zero annual amplitude, active layer thickness (ALT) and soil organic carbon (SOC) at different depth measured during the baseline period (2006 ...
Fu, Bojie   +6 more
core   +1 more source

The effect of different AlGaN insertion layer thicknesses on the photoelectric properties of InGaN/AlGaN near UV light emitting diodes

open access: yesResults in Physics, 2023
In this paper, a near-ultraviolet LED structure was fabricated on a sapphire substrate by using metal–organic chemical vapor deposition with an undoped AlGaN insertion layer introduced between multiple quantum wells and electron blocking layers, and the ...
Chaozhi Xu   +7 more
doaj   +1 more source

Circum-Arctic active layer thickness rasters

open access: yes, 2018
"Circum-Arctic active layer thickness rasters" These data represent the active layer thickness (ALT, in cm) forecasts over northern hemisphere land areas (>30°N) presented in the manuscript by Aalto et al., (2018) "Statistical forecasting of current and ...
Hjort, Jan   +7 more
core   +1 more source

Influence of active layer thickness on the performance of organic photovoltaics with light trapping [PDF]

open access: yes, 2019
To maximize the performance of a photovoltaic device, light trapping is necessary. In this paper, we theoretically investigate the effect of active layer thickness on the performance of organic photovoltaic (OPV) cells with ideal light trapping. Although
Inche Ibrahim, Mohd Lukman   +1 more
core   +1 more source

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