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近日，我校化学学院李光琴研究团队通过构建有效的纳米界面来调控催化剂的电子结构，设计制备出高效廉价的氧析出反应异质结电催化剂，并结合实验结果和理论计算对界面调控催化性质的机制进行了研究。他们首先以泡沫镍为基底，通过直接化学刻蚀的方法制备出泡沫镍负载的“十字柱”型的NiTe纳米阵列。进一步通过离子交换反应在NiTe表面修饰NiS纳米颗粒来调控NiTe的电子结构, 制备出NiTe/NiS 异质结催化剂。...
Motivic complexes over finite fields and the ring of correspondences at the generic point
fi nite fi elds generic point
2015/12/10
Already in the 1960s Grothendieck understood that one could obtain an almost
entirely satisfactory theory of motives over a finite field when one assumes the Tate
conjecture. In this not...
On the finite sample properties of pre-test estimators of spatial models
Spatial models Spatial lag models
2015/9/24
This paper explores the properties of pre-test strategies in estimating a linear Cliff–Ord-type spatial model when
the researcher is unsure about the nature of the spatial dependence. More speciʂ...
Automatic Inference for Infinite Order Vector Autoregressions
Vector Autoregressions instrument
2015/9/22
Infinite order vector autoregressive (VAR) models have been used in a number of applications
ranging from spectral density estimation, impulse response analysis, tests for cointegration and uni...
Null Complement Anaphors as definite descriptions
null complement anaphora implicit arguments,
2015/9/2
This paper develops the observation that, for many predicates, Null
Complement Anaphora (NCA) is like anaphora with a descriptively empty denite description (Condoravdi & Gawron 1996; Gauker 2012). I...
A note on the numerical dissipation from high-order discontinuous finite element schemes
Energy stable fl ux reconstruction schemes Spectral difference schemes
2015/7/3
This paper analyzes in detail the numerical dissipation term embedded in high-order discontinuous finite element type discretizations with particular emphasis on numerical schemes that can be fo...
An improved gas-kinetic BGK finite-volume method for three-dimensional transonic flow
Navier–Stokes equations BGK equation Kinetic scheme Finite-volume scheme
2015/7/2
During the past decade gas-kinetic methods based on the BGK simplification of the Boltzmann equation have been employed to compute fluid flow in a finite-difference or &#...
The construction of discretely conservative finite volume schemes that also globally conserve energy or entropy
discretely conservative fi nite entropy
2015/6/23
If shock waves appear in the solution, the discretization must be augmented by appropriate
shock operators to account for the dissipation of energy by the shock waves.
Variable verb placement in second-language German and French: Evidence from production and elicited imitation of finite and nonfinite negated sentences
second-language German French
2015/4/10
This study examines the placement of finite and nonfinite lexical verbs and finite light verbs (LVs) in
semispontaneous production and elicited imitation of adult beginning learners...
Exploring the potentials and limitations of the time-reversal imaging of finite seismic sources
potentials time-reversal imaging
2014/12/31
The characterisation of seismic sources with timereversed wave fields is developing into a standard technique
that has already been successful in numerous applications.
Direct numerical simulations of particle-laden density currents with adaptive, discontinuous finite elements
particle-laden density currents adaptive
2014/12/19
High-resolution direct numerical simulations
(DNSs) are an important tool for the detailed analysis of
turbidity current dynamics. Models that resolve the vertical
structure and turbulence of the &...
A mimetic, semi-implicit, forward-in-time, finite volume shallow water model: comparison of hexagonal–icosahedral and cubed-sphere grids
A mimetic semi-implicit forward-in-time
2014/12/18
A new algorithm is presented for the solution
of the shallow water equations on quasi-uniform spherical
grids. It combines a mimetic finite volume spatial discretization with a Crank–Nicolson ...