Results 51 to 60 of about 6,035,803 (304)

An Ultrasonic Vibration-Assisted Superplastic Forming Method for Zr-Based Bulk Amorphous Alloys: Experiment and Simulation

open access: yesMetals
The processing of bulk amorphous alloys is typically realized through superplastic deformation in the supercooled liquid region, and current research efforts predominantly focus on enhancing formability by optimizing processing parameters such as ...
Hui Li   +3 more
doaj   +1 more source

Surface Discretisation Effects on 3D Printed Surface Appearance

open access: yesCEUR Workshop Proceedings, 2020
This paper is published through the CEUR Workshop Proceedings (CEUR-WS.org): Free Open-Access Proceedings for Scientific Conferences and Workshops. Computer Science - Information Systems - Information Technology. Vol-2688: http://ceur-ws.org/Vol-2688/
Pranovich, Alina   +3 more
openaire   +2 more sources

Surface polar optical phonon interaction induced many-body effects and hot-electron relaxation in graphene

open access: yes, 2013
We theoretically study various aspects of the electron-surface optical phonon interaction effects in graphene on a substrate made of polar materials. We calculate the electron self-energy in the presence of the surface phonon-mediated electron-electron ...
Hwang, E. H., Sarma, S. Das
core   +1 more source

Revealing the structure of land plant photosystem II: the journey from negative‐stain EM to cryo‐EM

open access: yesFEBS Letters, EarlyView.
Advances in cryo‐EM have revealed the detailed structure of Photosystem II, a key protein complex driving photosynthesis. This review traces the journey from early low‐resolution images to high‐resolution models, highlighting how these discoveries deepen our understanding of light harvesting and energy conversion in plants.
Roman Kouřil
wiley   +1 more source

Surface effects on oxide heterostructures [PDF]

open access: yesEurophysics Letters (EPL), 2007
10 pages, 3 figures, accepted by Europhys ...
Schwingenschloegl, U., Schuster, C.
openaire   +2 more sources

The electronic structure of the Na$_x$CoO$_2$ surface

open access: yes, 2008
The idea that surface effects may play an important role in suppressing $e_g'$ Fermi surface pockets on Na$_x$CoO$_2$ $(0.333 \le x \le 0.75)$ has been frequently proposed to explain the discrepancy between LDA calculations (performed on the bulk ...
Johannes, M. D.   +2 more
core   +1 more source

Electrostatic effects and band-bending in doped topological insulators [PDF]

open access: yes, 2012
We investigate the electrostatic effects in doped topological insulators by developing a self consistent scheme for an interacting tight binding model. The presence of bulk carriers, in addition to surface electrons, generates an intrinsic inhomogeneous ...
Galanakis, Dimitrios, Stanescu, Tudor D.
core   +3 more sources

Mapping the evolution of mitochondrial complex I through structural variation

open access: yesFEBS Letters, EarlyView.
Respiratory complex I (CI) is crucial for bioenergetic metabolism in many prokaryotes and eukaryotes. It is composed of a conserved set of core subunits and additional accessory subunits that vary depending on the organism. Here, we categorize CI subunits from available structures to map the evolution of CI across eukaryotes. Respiratory complex I (CI)
Dong‐Woo Shin   +2 more
wiley   +1 more source

INVERSION SYMMETRY, ARCHITECTURE AND DISPERSITY, AND THEIR EFFECTS ON THERMODYNAMICS IN BULK AND CONFINED REGIONS: FROM RANDOMLY BRANCHED POLYMERS TO LINEAR CHAINS, STARS AND DENDRIMERS

open access: yesCondensed Matter Physics, 2002
Theoretical evidence is presented in this review that architectural aspects can play an important role, not only in the bulk but also in confined geometries by using our recursive lattice theory, which is equally applicable to fixed architectures ...
P.D.Gujrati
doaj   +1 more source

Equilibrium and kinetic isotope effects in heterogeneous catalysis: A density functional theory perspective

open access: yesCatalysis Communications, 2023
Isotopes are indispensable tools for elucidating catalytic reaction mechanisms. Yet, computational isotopic studies in heterogeneous catalysis remain scarce, especially when compared with other subfields of chemistry.
Benjamin W.J. Chen
doaj   +1 more source

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