Results 31 to 40 of about 86,412 (245)

High-Pressure Phases of Boron Pnictides BX (X = As, Sb, Bi) with Quartz Topology from First Principles

Crystals
The superdense hexagonal boron pnictides BX (X = As, Sb, Bi), whose structures are formed by distorted tetrahedra and characterized by a quartz-derived (qtz) topology, have been predicted from first principles as potential high-pressure phases. From full
Vladimir L. Solozhenko, Samir F. Matar
doaj   +1 more source

A Practical Approach for Extracting Tree Models in Forest Environments Based on Equirectangular Projections of Terrestrial Laser Scans

Remote Sensing, 2013
Extracting 3D tree models based on terrestrial laser scanning (TLS) point clouds is a challenging task as trees are complex objects. Current TLS devices acquire high-density data that allow a detailed reconstruction of the tree topology.
Felix Morsdorf, Andreas Grafl, Markus Hollaus, Camillo Ressl, Norbert Pfeifer, Lothar Eysn   +5 more
doaj   +1 more source

A new methodology to train fracture network simulation using multiple-point statistics [PDF]

Solid Earth, 2019
Natural fracture network characteristics can be establishes from high-resolution outcrop images acquired from drone and photogrammetry. Such images might also be good analogues of subsurface naturally fractured reservoirs and can be used to make ...
P.-O. Bruna, J. Straubhaar, R. Prabhakaran, R. Prabhakaran, G. Bertotti, K. Bisdom, G. Mariethoz, M. Meda   +7 more
doaj   +1 more source

Resonant and crossover phenomena in a multiband superconductor tuning the chemical potential near a band edge

, 2010
Resonances in the superconducting properties, in a regime of crossover from BCS to mixed Bose-Fermi superconductivity, are investigated in a two-band superconductor where the chemical potential is tuned near the band edge of the second mini-band ...
A. Bianconi, A. Bianconi, A. Bianconi, A. Bussmann-Holder, A. J. Leggett, Alessandro Ricci, Andrea Perali, Antonio Bianconi, Antonio Valletta, Davide Innocenti, I. M. Lifshitz, I. M. Lifshitz, Nicola Poccia, Sergio Caprara   +13 more
core   +1 more source

Optimal network topologies: Expanders, Cages, Ramanujan graphs, Entangled networks and all that

, 2006
We report on some recent developments in the search for optimal network topologies. First we review some basic concepts on spectral graph theory, including adjacency and Laplacian matrices, and paying special attention to the topological implications of ...
, , Barthelemy M Flammini A, Bollobás B, Bollt E M, Chung F, Chung F, Davidoff G, Donetti L, Donetti L, Dorogovtsev S N, Franco Neri, Gastner M T Newman M E J, Kirkpatrick S, Lovász L, Luca Donetti, Margulis G A, Miguel A Muñoz, Mohar B, Myrvold W, Pastor Satorras R, Pons P Latapy M, Read R C, Reingold O, Sarnak P, Tutte W, Weisstein E W   +26 more
core   +1 more source

Magneto-Optical Faraday Effects in Dispersive Properties and Unusual Surface Plasmon Modes in the Three-Dimensional Magnetized Plasma Photonic Crystals

IEEE Photonics Journal, 2014
The dispersive properties and unusual surface plasmon modes in three-dimensional (3-D) magnetized plasma photonic crystals (MPPCs) with face-centered-cubic lattices that are composed of the core tellurium (Te) spheres surrounded by the magnetized plasma ...
Hai-Feng Zhang, Shao-Bin Liu
doaj   +1 more source

(pi,pi)-electronic order in iron arsenide superconductors

, 2008
The distribution of valence electrons in metals usually follows the symmetry of an ionic lattice. Modulations of this distribution often occur when those electrons are not stable with respect to a new electronic order, such as spin or charge density ...
A. A. Kordyuk, A. Koitzsch, A. N. Yaresko, A. V. Boris, A. Varykhalov, B. Büchner, C de la Cruz, C Liu, C. T. Lin, D. Haug, D. S. Inosov, D. V. Evtushinsky, DH Lu, E Morosan, G. L. Sun, H Chen, H Ding, IA Nekrasov, II Mazin, J. T. Park, L Zhao, M. Knupfer, Q Huang, R. Follath, RJ Radtke, S Chakravarty, S Kawasaki, S. V. Borisenko, SV Borisenko, V Brouet, V. B. Zabolotnyy, V. Hinkov, WD Wise, XH Chen, Y Kamihara   +34 more
core   +1 more source

Aharonov-Bohm oscillations and electron gas transitions in hexagonal core-shell nanowires with an axial magnetic field [PDF]

, 2015
We use spin-density-functional theory within an envelope function approach to calculate electronic states in a GaAs/InAs core-shell nanowire pierced by an axial magnetic field.
Bertoni, Andrea, Goldoni, Guido, Planelles, Josep, Royo, Miquel, Segarra, Carlos   +4 more
core   +2 more sources

Real‐time assay of ribonucleotide reductase activity with a fluorescent RNA aptamer

FEBS Letters, EarlyView.
Ribonucleotide reductases (RNR) synthesize DNA building blocks de novo, making them crucial in DNA replication and drug targeting. FLARE introduces the first single‐tube real‐time coupled RNR assay, which enables isothermal tracking of RNR activity at nanomolar enzyme levels and allows the reconstruction of allosteric regulatory patterns and rapid ...
Jacopo De Capitani, Noemi E. Nwosu, Viktoria Gocke, Müge Kasanmascheff, Hannes Mutschler   +4 more
wiley   +1 more source

Topological Insulator-to-Weyl Semimetal Transition in Strongly Correlated Actinide System UNiSn

Physical Review X, 2019
Although strong electronic correlations are known to be responsible for some highly unusual behaviors of solids such as metal-insulator transitions, magnetism, and even high-temperature superconductivity, their interplay with recently discovered ...
Vsevolod Ivanov, Xiangang Wan, Sergey Y. Savrasov   +2 more
doaj   +1 more source