Results 31 to 40 of about 1,353,139 (279)

Exploration of the atomic-level structures of the icosahedral clusters in Cu–Zr–Al ternary metallic glasses via first-principles theory

open access: yesMaterials Research Express, 2022
The atomic-level structures of the icosahedral clusters in Cu–Zr–Al ternary metallic glasses were studied via the first-principles theory. The rules of icosahedra stability were determined.
Wenfei Lu   +4 more
doaj   +1 more source

Carbon materials: structures, properties, synthesis and applications

open access: yesManufacturing Review, 2023
As one of the most versatile elements, carbon materials occupy the most plentiful allotropies composed of pure or mixed hybridization orbitals of sp1/sp2/sp3.
Li Jiang, Yin Deqiang, Qin Yi
doaj   +1 more source

Locally preferred structure in simple atomic liquids

open access: yes, 2003
We propose a method to determine the locally preferred structure of model liquids. This latter is obtained numerically as the global minimum of the effective energy surface of clusters formed by small numbers of particles embedded in a liquid-like ...
G. Tarjus, S. Mossa, Yonezawa F.
core   +1 more source

Novel Genetic Risk Factor Identified for L‐Asparaginase‐Induced Pancreatitis in Pediatric Patients With Cancer

open access: yesPediatric Blood &Cancer, EarlyView.
ABSTRACT Background L‐asparaginase is a critical component in treatment protocols for pediatric acute lymphoblastic leukemia. Acute pancreatitis reactions can necessitate delays and, in some cases, discontinuation of L‐asparaginase, which compromises outcomes.
Edward J. Raack   +39 more
wiley   +1 more source

Distant two-qubit gates in atomic array with Rydberg interaction using geometric quantum control

open access: yesQuantum Frontiers
Connectivity between qubits plays an irreplaceable role in quantum computation. An urgent task of quantum computation based on atomic arrays is to generate effective coupling between two distant qubits, thereby enhancing connectivity.
Ze-Rui He   +10 more
doaj   +1 more source

The atomic path for constructing single‐helical superstructure of AuCu bimetallic nanoclusters

open access: yesAggregate, 2023
Single‐helical or double‐helical structures are common in living organisms. Helical assembly has been found in the artificial nanoparticles, but how they do so remains poorly understood. Here, we exploit atomically precise Au6Cu6 bimetallic nanoparticles
Ancheng Tang   +6 more
doaj   +1 more source

The γ” Phase in Mg-RE-TM Alloys: A Review on the Structure and Stability of the γ” Phase and Its Effect on Mechanical Properties

open access: yesMetals, 2023
In magnesium–rare earth–transition metal (Mg-RE-TM) alloys, the γ” phase (with a hexagonal structure with the space group P6¯2m) is a critical strengthening phase that can significantly improve their mechanical properties.
Zhenyang Liu   +4 more
doaj   +1 more source

X-ray Absorption Fine Structure in Embedded Atoms

open access: yes, 1994
Oscillatory structure is found in the atomic background absorption in x-ray-absorption fine structure (XAFS). This atomic-XAFS or AXAFS arises from scattering within an embedded atom, and is analogous to the Ramsauer-Townsend effect.
A. I. Frenkel   +14 more
core   +1 more source

MYCN Amplification in RB1‐Inactivated Retinoblastoma: Association With High‐Risk Features

open access: yesPediatric Blood &Cancer, EarlyView.
ABSTRACT Background MYCN amplification occurs in a subset of retinoblastoma cases, both with and without RB1 inactivation. It has been suggested that retinoblastomas with MYCN amplification represent a distinct entity with more aggressive clinical behavior.
Kyriaki Papaioannou   +9 more
wiley   +1 more source

Effects of confinement on the permanent electric-dipole moment of Xe atoms in liquid Xe

open access: yes, 2004
Searches for permanent electric-dipole moments (EDM) of atoms provide important constraints on competing extensions to the standard model of elementary particles. Recently proposed experiment with liquid $^{129}$Xe [M.V. Romalis and M.P. Ledbetter, Phys.
A. L. Fetter   +7 more
core   +1 more source

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