Results 41 to 50 of about 1,218,797 (156)

Thermal De-Oxygenation to Form Condensable Aerosol From Reconstituted Tobacco without Auto-Ignition

open access: yesContributions to Tobacco and Nicotine Research, 2022
A novel concept is described here that utilizes externally applied heat to a solid rod of reconstituted tobacco biomass to form a stream of aerosol under progressively oxygen-deficient atmosphere.
Guo Zhongya   +18 more
doaj   +1 more source

Microaerobic biodegradation of aromatic hydrocarbon mixtures: strategies for efficient nitrate and oxygen dosage

open access: yesApplied Microbiology and Biotechnology
The biodegradation of organic aromatic compounds in subsurface environments is often hindered by limited dissolved oxygen. While oxygen supplementation can enhance in situ biodegradation, it poses financial and technical challenges.
Dilan Camille Aydin   +3 more
doaj   +1 more source

Oxidative Conversion of Methane of Natural Gas to Oxygen Containing Compounds

open access: yesChemical Engineering Transactions, 2017
The search of new compositions of catalysts on carriers on the base of heteropoly compounds of molybdenum for oxidative conversion of methane, the identification of optimal conditions for the partial oxidation of methane to formaldehyde, as well as study
S.A. Tungatarova   +5 more
doaj   +1 more source

Ising-like Spin Anisotropy and Competing Antiferromagnetic - Ferromagnetic Orders in GdBaCo_{2}O_{5.5} Single Crystals

open access: yes, 2003
In RBaCo_{2}O_{5+x} compounds (R is rare earth), a ferromagnetic-antiferromagnetic competition is accompanied by a giant magnetoresistance. We study the magnetization of detwinned GdBaCo_{2}O_{5.5} single crystals, and find a remarkable uniaxial ...
A. A. Taskin   +4 more
core   +1 more source

Efecto del oxígeno y la glucosa en la metanogénesis y mineralización de resinas poliméricas

open access: yesRevista Colombiana de Biotecnología, 2010
En el presente trabajo se evaluó el efecto de la concentración de oxígeno disuelto (OD) y la presencia de la glucosa en la metanogénesis y mineralización de los compuestos de resinas poliméricas, mediante cultivos en lote.
Ulises Durán Hinojosa   +3 more
doaj   +2 more sources

Spin-polarized oxygen hole states in cation deficient La(1-x)CaxMnO(3+delta)

open access: yes, 2003
When holes are doped into a Mott-Hubbard type insulator, like lightly doped manganites of the La(1-x)CaxMnO3 family, the cooperative Jahn-Teller distortions and the appearance of orbital ordering require an arrangement of Mn(3+)/Mn(4+) for the ...
Argyriou D. N.   +15 more
core   +1 more source

Effect of Boron-Zinc-Aluminum-Silicium Compounds on the Fire Performance of Ultra-Low Density Fiberboards (ULDFs)

open access: yesBioResources, 2016
B-Zn-Si-Al compounds, as a modification of Si-Al compounds, is made of sodium silicate, zinc sulfate, borax and aluminum sulfate, acting as a fire retardant during the preparation of ultra-low density fiberboards (ULDFs).
Zhenzeng Wu   +4 more
doaj   +1 more source

Evidence for very strong electron-phonon coupling in YBa_{2}Cu_{3}O_{6}

open access: yes, 2007
From the observed oxygen-isotope shift of the mid-infrared two-magnon absorption peak of YBa$_{2}$Cu$_{3}$O$_{6}$, we evaluate the oxygen-isotope effect on the in-plane antiferromagnetic exchange energy $J$.
A. S. Alexandrov   +4 more
core   +1 more source

Advances in single crystal growth and annealing treatment of electron-doped HTSC

open access: yes, 2010
High quality electron-doped HTSC single crystals of $\rm Pr_{2-x}Ce_{x}CuO_{4+\delta}$ and $\rm Nd_{2-x}Ce_{x}CuO_{4+\delta}$ have been successfully grown by the container-free traveling solvent floating zone technique.
A. Erb   +27 more
core   +1 more source

Chemical and photochemical properties of chloroharmine derivatives in aqueous solutions [PDF]

open access: yes, 2016
Thermal and photochemical stability (ΦR), room temperature UV-vis absorption and fluorescence spectra, fluorescence quantum yields (ΦF) and lifetimes (τF), quantum yields of hydrogen peroxide (ΦH2O2) and singlet oxygen (ΦΔ) production, and triplet ...
Cabrerizo, Franco Martín   +7 more
core   +1 more source

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