Now showing items 21-30 of 316
Microwave Sol–Gel Synthesis of CaGd2(MoO4)4:Er3+/Yb3+ Phosphors and Their Upconversion Photoluminescence Properties
CaGd2(MoO4)4:Er3+/Yb3+ phosphors with the doping concentrations of Er3+ and Yb3+ (x = Er3+ + Yb3+, Er3+ = 0.05, 0.1, 0.2, and Yb3+ = 0.2, 0.45) have been successfully synthesized by the microwave sol–gel method, and the ...
Coherent manipulation of the Raman-induced gratings in atomic media
We consider dynamically controllable periodic structures (gratings), resulting from Raman interaction of a weak probe field with a standing-wave pump and a second control laser field in four-level atomic media of N type. ...
The morphological and structural features of ferrite compositions (1-x) MeFe2O4 xP2O5 prepared by plasma spraying
Structural features of spinel ferrites formed by rapid quenched from the liquid state, has been studied. It was found that higher quenching rates cause sequential disorder of the spinel structure. Process starts with ...
Reflective Power Limiter for X-band with HTSC switching element
his paper presents a new type of power limiter (PL), using superconducting – to – normal state phase transition in HTSC. The presented device differs from the existing ones mainly in the ...
Forests synchronize their growth in contrasting Eurasian regions in response to climate warming
Forests play a key role in the carbon balance of terrestrial ecosystems. One of the main uncertainties in global change predictions lies in how the spatiotemporal dynamics of forest productivity will be affected by climate ...
Cellulose Digestion for Chemical Processing Under Noisy Conditions: Robust Control Experience
An example of the potential for robust control of soluble cellulose production was proposed and illustrated.
Diverse growth trends and climate responses across Eurasia’s boreal forest
The area covered by boreal forests accounts for ∼16%of the global and 22% of theNorthern Hemisphere landmass. Changes in the productivity and functioning of this circumpolar biome not only have strong effects on species ...
Woody biomass production lags stem-girth increase by over one month in coniferous forests
Wood is the main terrestrial biotic reservoir for long-term carbon sequestration1, and its formation in trees consumes around 15% of anthropogenic carbon dioxide emissions each year2. However, the seasonal dynamics of woody ...