Results 91 to 100 of about 596,723 (309)

Computational Study of the Effect of the Size-Dependent Dielectric Functions of Gold Nanomaterials on Optical Properties

Advances in Condensed Matter Physics
The effect of size on the optical properties of gold nanomaterials has been studied using the theoretical Drude–Sommerfield model. The real and imaginary parts of the dielectric function of bulk as a function of wavelength due to free electron ...
Bawoke Mekuye, Rainer Höfer, Gedefaw Mebratie   +2 more
doaj   +1 more source

Emittance control in the presence of collective effects in the fermi@elettra free electron laser linac driver

, 2013
Recent beam transport experiments conducted on the linac driving the FERMI@Elettra free electron laser (FEL) have provided new insights concerning the transverse emittance degradation due to both coherent synchrotron radiation (CSR) and geometric ...
Giannessi, L.
core  

Large‐scale bidirectional arrayed genetic screens identify OXR1 and EMC4 as modifiers of αSynuclein aggregation

FEBS Open Bio, EarlyView.
Activation of the mitochondrial protein OXR1 increases pSyn129 αSynuclein aggregation by lowering ATP levels and altering mitochondrial membrane potential, particularly in response to MSA‐derived fibrils. In contrast, ablation of the ER protein EMC4 enhances autophagic flux and lysosomal clearance, broadly reducing α‐synuclein aggregates.
Sandesh Neupane, Lea Nikolić, Lorenzo Maraio, Thomas Goiran, Nathan Karpilovsky, Stefano Sellitto, Vangelis Bouris, Jiang‐An Yin, Ronald Melki, Edward A Fon, Adriano Aguzzi, Elena De Cecco   +11 more
wiley   +1 more source

Length of Free Path of Slow Electrons in a Solid Depending on Their Energy

Успехи физики металлов, 2006
The main methods of calculation of the inelastic mean free path (IMFP), λ, of inelastically-scattered electrons versus their energy E0 are reviewed. Mechanisms, which influence on the character of λ(E_{0})-dependence of IMFP, are considered for electron ...
V. O. Tin’kov
doaj   +1 more source

Numerical simulation of charged fullerene spectrum

Mathematical Modelling and Analysis, 2019
The mathematical model of the ground state electron spectrum of a charged fullerene is constructed on the basis of the potential of a charged sphere and the spherically symmetric potential of a neutral fullerene, derived in a single-electron self ...
Rafael Arutyunyan, Yuri Obukhov, Petr Vabishchevich   +2 more
doaj   +1 more source

Free-Electron Ring Model of Polyacenes [PDF]

Progress of Theoretical Physics, 1956
Electronic energy levels of polyacenes are calculated by assuming their n electrons to move freely Itt a ring of a circumference which is equal to the_ perimeter length of the polyacene molecule. The interaction between n-electrons is assumed to be the long range part of the Coulomb interaction.
openaire   +1 more source

Coincident electron channeling and cathodoluminescence studies of threading dislocations in GaN

, 2014
We combine two scanning electron microscopy techniques to investigate the influence of dislocations on the light emission from nitride semiconductors.
Edwards, P. R., Bruckbauer, J., Oliver, R. A., Kraeusel, S., Moram, M. A., Lovelock, S., Trager-Cowan, C., Naresh-Kumar, G., Martin, R. W., Humphreys, C. J., Hourahine, B., Kappers, M. J.   +11 more
core   +1 more source

Molecular dynamics simulations of positively selected codons in FcγRI reveal novel biochemical binding properties

FEBS Open Bio, EarlyView.
Evolutionary analysis across 32 placental mammals identified positive selection at residues H148 and W149 in the immune receptor FcγR1. Ancestral reconstruction combined with molecular dynamics simulations reveals how these mutations may influence receptor structure and dynamics, providing insight into the evolution of antibody recognition and immune ...
David A. Young, Omar Arias‐Gaguancela, Fiona Gibson, Morgan Grainger, Jodie Score, Amit Nathubhai, Mauricio Cafiero, Lee Richard Machado   +7 more
wiley   +1 more source

Sudden anaerobization in Amphibacillus xylanus increases intracellular labile ferrous iron and inhibits cell growth

FEBS Open Bio, EarlyView.
Abruptly changing from aerobic to anaerobic conditions (sudden anaerobization) induced growth inhibition and a significant increase in intracellular labile ferrous iron in the aerotolerant anaerobe Amphibacillus xylanus. We found that free flavins mediate efficient electron transfer from NADH to ferric iron under anaerobic conditions, suggesting that ...
Shinya Kimata, Yoichi Sakai, Keisuke Tanaka, Etsuro Yoshimura, Ken Kitano, Morio Ishikawa, Tadahiro Nakamoto, Tsutomu Takayama, Hirofumi Inoue, Kaho Nomura, Tomonori Suzuki, Masataka Uchino, Akira Abe, Youichi Niimura   +13 more
wiley   +1 more source

Photo -induced Electron Transfer Between Ruthenium (II) tris –(2,2  - bipyrdine ) and Methyl Viologen

Ibn Al-Haitham Journal for Pure and Applied Sciences, 2017
Electron transfer (ET) reactions represent an elementary chemical process which occurs in a large  variety of molecules, ranging from small ion pairs up to large biological system.
H.J.M. Al-Agealy
doaj