Results 11 to 20 of about 1,482,675 (252)

Chemical looping gasification of benzene as a biomass tar model compound using hematite modified by Ni as an oxygen carrier

open access: yesApplications in Energy and Combustion Science, 2023
The effective removal of tar is a major challenge for biomass gasification. Schemes based on chemical looping gasification (CLG) offer a promising alternative for converting biomass into syngas with low tar content.
Huang Zhen   +9 more
doaj   +1 more source

Conversion Efficiencies of Heteronuclear Feshbach Molecules [PDF]

open access: yes, 2001
We study the conversion efficiency of heteronuclear Feshbach molecules in population imbalanced atomic gases formed by ramping the magnetic field adiabatically. We extend the recent work [J. E. Williams et al., New J.
Bartlett, Paul   +2 more
core   +1 more source

Counterintuitive example on relation between ZT and thermoelectric efficiency [PDF]

open access: yes, 2020
The thermoelectric figure of merit ZT, which is defined using electrical conductivity, Seebeck coefficient, thermal conductivity, and absolute temperature T, has been widely used as a simple estimator of the conversion efficiency of a thermoelectric heat
Choi, Eun-Ae   +5 more
core   +2 more sources

Characteristic Study of Briquette Cyanobacteria as Fuel in Chemical Looping Combustion with Hematite as Oxygen Carrier

open access: yesApplied Sciences, 2021
Due to the more and more serious cyanobacteria bloom problem, it is particularly urgent to find a technology suitable for large-scale disposal and the efficient recovery of abundant nitrogen and phosphorus resources in cyanobacteria.
Haifeng Zhang   +3 more
doaj   +1 more source

Reinforcing high-density polyethylene by phenolic spheres

open access: yesMATEC Web of Conferences, 2018
Phenolic spheres are synthesized through resorcinol and formaldehyde. The phenolic spheres were blended with HDPE to prepare binary composites. The rheological properties and mechanical properties of the composites were studied.
Zhu Lien   +6 more
doaj   +1 more source

Exceeding the solar cell Shockley-Queisser limit via thermal up-conversion of low-energy photons [PDF]

open access: yes, 2013
Maximum efficiency of ideal single-junction photovoltaic (PV) cells is limited to 33% (for one sun illumination) by intrinsic losses such as band edge thermalization, radiative recombination, and inability to absorb below-bandgap photons.
Boriskina, Svetlana V., Chen, Gang
core   +2 more sources

Efficient Enhancement of Second Harmonic Generation via Noninvasive Modulation

open access: yesApplied Sciences, 2022
Second harmonic generation has been widely applied in various fields. High second harmonic intensity can facilitate optical imaging, signal sensing, and detection. Thus, enhancing the intensity of the second harmonic is a significant work.
Liqing Wu   +3 more
doaj   +1 more source

Four-wave mixing wavelength conversion efficiency in semiconductor traveling-wave amplifiers measured to 65 nm of wavelength shift [PDF]

open access: yes, 1994
The efficiency of broadband optical wavelength conversion by four-wave mixing in semiconductor traveling-wave amplifiers is measured for wavelength shifts up to 65 nm using a tandem amplifier geometry.
Miller, Barry I.   +4 more
core   +1 more source

Crystal structure of (Z)-6-methoxy-2-(2,2,2-trifluoro-1-hydroxyethylidene)-2,3-dihydro-1H-inden-1-one, C12H6F6O3

open access: yesZeitschrift für Kristallographie - New Crystal Structures, 2017
C12H6F6O3, monoclinic, P21/c (no. 14), a = 9.433(1) Å, b = 15.567(2) Å, c = 7.682(1) Å, β = 102.83(1)°, V =1099.95(3) Å3, Z = 4, Rgt(F) = 0.0433, wRref(F2) = 0.1264, T = 293 K.
Xing DongYe   +3 more
doaj   +1 more source

Identification method of all-operating-point admittance model for wind farms considering frequency-coupling characteristics

open access: yesInternational Journal of Electrical Power & Energy Systems
Admittance identification is an effective tool to solve the issue of black-box admittance modeling in wind farms. However, due to the large operating range of wind farms, it is difficult to accurately identify the admittance model of wind farms under all
Zilin Zhang   +6 more
doaj   +1 more source

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