Results 41 to 50 of about 426,299 (315)

Absorption and photoconductivity spectra of amorphous multilayer structures

open access: yesBeilstein Journal of Nanotechnology, 2020
The experimental results regarding optical absorption and steady-state photoconductivity of amorphous single-layer structures (Al–As0.40S0.30Se0.30–Al, Al–Ge0.09As0.09Se0.82–Al, and Al–Ge0.30As0.04S0.66–Al) and of an amorphous heterostructure (Al–As0 ...
Oxana Iaseniuc, Mihail Iovu
doaj   +1 more source

The Absorption Spectra of Iron-Flavoproteins

open access: yesJournal of Biological Chemistry, 1964
The reddish appearance of milk xanthine oxidase was first noted by Corran, Dewan, Gordon, and Green (l), who attributed this property to the presence of a second chromophoric group in addition to the flavin component. Morrell(2) suggested that the seemingly atypical absorption spectrum of this enzyme is caused by enhancement of the flavin absorption ...
K V, RAJAGOPALAN, P, HANDLER
openaire   +2 more sources

An unexpected alternative viologen electron mediator site in tungsten‐containing formate dehydrogenase

open access: yesFEBS Letters, EarlyView.
An unexpected alternative interaction site for ethyl viologen was identified in formate dehydrogenase 1 from Methylorubrum extorquens. Combined mutagenesis, kinetic analysis, and docking revealed that aromatic residues near an iron–sulfur cluster enable flavin mononucleotide‐independent electron transfer, offering a framework for engineering improved ...
Eleni G. Poloniataki, Yong Hwan Kim
wiley   +1 more source

Efficiency of Energy Transfer for TiO2 Nanoparticles with Fluorescein Dye

open access: yesAl-Mustansiriyah Journal of Science, 2019
For different amount of masses of TiO2 nanoparticles in dye solution, absorption and Fluorescence profiles of the suspension for TiO2 nanoparticles with Fluorescein (F) in distilled water solution, has been explored.
Mahasin F. Hadi Al-Kadhemy   +2 more
doaj   +1 more source

Detection of O4 absorption around 328 and 419 nm in measured atmospheric absorption spectra [PDF]

open access: yesAtmospheric Chemistry and Physics, 2018
Retrieving the column of an absorbing trace gas from spectral data requires that all absorbers in the corresponding wavelength range are sufficiently well known.
J. Lampel   +8 more
doaj   +1 more source

Infrared absorption spectra of some 1-acetamido pyranoid derivatives and reducing, acetylated pyranoses

open access: yes, 1961
The infrared absorption spectra of five N-glycopyranosylacetamides and of six acetate esters thereof are presented, together with the spectra of five related compounds, for the range of 5000 to 250 cm-1.
Tipson, R. Stuart; Isbell, Horace S.
core   +1 more source

Electron transfer between complexes III and IV in S. cerevisiae mitochondrial membranes

open access: yesFEBS Letters, EarlyView.
Mitochondrial oxidative phosphorylation in S. cerevisiae mitoplasts is limited by complex IV catalytic capacity, rather than two‐dimensional cytochrome c diffusion. At physiological cytochrome c : supercomplex ratios at salinity equivalent to that of 20 mm monovalent salt, activity is maximized, indicating that this low ionic strength accurately mimics
Ana Paula Lobez   +2 more
wiley   +1 more source

Mixed‐class J‐domain protein scaffolds promote expanded aggregate handling and multivalent Hsp70 engagement during functional disaggregase assembly

open access: yesFEBS Letters, EarlyView.
Protein aggregates threaten proteostasis and cell health. In human cells, Hsp70–J‐domain protein‐based disaggregases remove aggregates, but how they assemble remains unclear. Our biochemical findings show that DNAJA2‐ and DNAJB1‐containing disaggregase scaffolds enhance luciferase aggregate targeting, and that Hsp70 recruitment by both J‐domain ...
Anna Szlachcic, Nadinath B. Nillegoda
wiley   +1 more source

Tumour–host interactions in Drosophila: mechanisms in the tumour micro‐ and macroenvironment

open access: yesMolecular Oncology, EarlyView.
This review examines how tumour–host crosstalk takes place at multiple levels of biological organisation, from local cell competition and immune crosstalk to organism‐wide metabolic and physiological collapse. Here, we integrate findings from Drosophila melanogaster studies that reveal conserved mechanisms through which tumours hijack host systems to ...
José Teles‐Reis, Tor Erik Rusten
wiley   +1 more source

Determination of the complete set of optical parameters of micron-sized polycrystalline CH3NH3PbI3−xClx films from the oscillating transmittance and reflectance spectra

open access: yesMaterials Research Express, 2019
The complete set of optical parameters of micron-sized polycrystalline CH _3 NH _3 PbI _3−x Cl _x films deposited by the vacuum co-evaporation of lead iodide and methylammonium chloride is determined by analysis of oscillating optical transmittance and ...
Gevorkian Zhyrair   +5 more
doaj   +1 more source

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