Results 11 to 20 of about 33,984 (224)

Tobacco Xenobiotics Release Nitric Oxide

Tobacco Induced Diseases, 2009
Many xenobiotic compounds exert their actions through the release of free radicals and related oxidants 1,2 , bringing about unwanted biological effects 3 .
EWN Lam, EE Kelley, SM Martin, GR Buettner   +3 more
doaj   +1 more source

Electron Paramagnetic Resonance in Biology

Biophysical Journal, 1962
A review of the theories of electron paramagnetic resonance in biology is presented, including a discussion of the nature of the physical observation, followed by examples of materials of biological interest. Iq discussing these examples, information is presented in terms of the nature of the starting material under observation rather than the nature ...
Androes, G.M., Calvin, Melvin.
openaire   +5 more sources

Electron paramagnetic resonance of manganese-doped strontium titanate [PDF]

Cerâmica
Electron paramagnetic resonance (EPR) spectra of manganese-doped strontium titanate were investigated for several Mn concentrations. The spectra of Mn2+ and Mn4+ ions were observed and attributed, respectively, to Mn ions occupying Sr2+ and Ti4+ sites ...
R. S. de Biasi, M. L. N. Grillo
doaj   +2 more sources

Electron paramagnetic resonance of VN–VGa complex in BGaN

APL Materials, 2023
A metastable photoinduced electron paramagnetic resonance (EPR) signal at low temperatures is reported for GaN alloyed with boron (i.e., BxGa1−xN) epitaxial layers grown at temperatures ranging from 840 to 1090° C. An isotropic EPR line with g = 2.004 is
J. Kierdaszuk, E. B. Możdżynska, A. Drabińska, A. Wysmolek, J. M. Baranowski   +4 more
doaj   +1 more source

Nanographene oxide-methylene blue as phototherapies platform for breast tumor ablation and metastasis prevention in a syngeneic orthotopic murine model

Journal of Nanobiotechnology, 2018
Background In the photodynamic therapy (PDT), the photosensitizer absorbs light and transfers the energy of the excited state to the oxygen in the cell environment producing reactive oxygen species (ROS), that in its turn, may cause cell damage.
Mayara Simonelly Costa dos Santos, Ana Luisa Gouvêa, Ludmilla David de Moura, Leonardo Giordano Paterno, Paulo Eduardo Narcizo de Souza, Ana Paula Bastos, Emanuel Adelino Medeiros Damasceno, Fabiane Hiratsuka Veiga-Souza, Ricardo Bentes de Azevedo, Sônia Nair Báo   +9 more
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Retrospective dosimetry using fingernail electron paramagnetic resonance response

Nuclear Engineering and Technology, 2018
Human fingernails were used to estimate the radiation dose via electron paramagnetic resonance measurements of radiation-induced radicals. The limiting factors in this research were mechanically induced electron paramagnetic resonance signals due to the ...
Abbas Noori, Mojtaba Mostajaboddavati, Farhood Ziaie   +2 more
doaj   +1 more source

Thermostimulated crystal structure transformation of the polymineral clay submicron particles

Cerâmica, 2022
Changes in the structure of phyllosilicate microparticles of submicron fractions of polymineral clay with an average size of 290 nm, as well as changes in the positions of impurity ions of transition metals in the crystal lattice, were studied by X-ray ...
A. G. Chetverikova, O. N. Kanygina, V. N. Makarov, V. L. Berdinskiy, M. M. Seregin   +4 more
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Synthesis and characterization of paramagnetic isotropic glycine manganese chloride single crystal with various dopant concentrations

Results in Physics, 2019
Single crystals of α and γ glycine manganese chloride (GMC) were prepared using four dopant concentrations of MnCl2 in the molecular formula (C2H5NO2)1−x(MnCl2)x, where [x = 0.005, 0.02, 0.04, 0.05]. The crystals showed: nonlinear optical (NLO) activity,
Ollaa M. Mailoud, Adly H. Elsayed, H. Abu El Fetouh, A.H. Abu ELazm   +3 more
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Deciphering mechanism of excited state reactivity by spectroscopic methods

Journal of Photochemistry and Photobiology, 2023
The Feature highlights Electron Paramagnetic Resonance (EPR) spectroscopy as an indispensable tool to understand the excited state reactivity of organic molecules.
Sarvar Aminovich Rakhimov, Malcolm D.E. Forbes, Jayaraman Sivaguru   +2 more
doaj   +1 more source

Electron paramagnetic resonance of sonicated powder suspensions in organic solvents

Ultrasonics Sonochemistry, 2021
The chemical effects of the acoustic cavitation generated by ultrasound translates into the production of highly reactive radicals. Acoustic cavitation is widely explored in aqueous solutions but it remains poorly studied in organic liquids and in ...
Héla Laajimi, Michela Mattia, Robin S. Stein, Claudia L. Bianchi, Daria C. Boffito   +4 more
doaj   +1 more source