A yellow luminescent thiolate-protected Ag(14)(SC(6)H(3)F(2))(12)(PPh(3))(8) cluster was synthesized and structurally characterized by single-crystal X-ray analysis. The cluster contains an octahedral Ag(6)(4+) unit encapsulated by eight cubically arranged [Ag(+)(SC(6)H(3)F(2)(-))(2)PPh(3)] tetrahedra that share one corner (i.e. SC(6)H(3)F(2)(-)) between them.

Three novel bimetallic Au-Cu nanoclusters stabilized by a mixed layer of thiolate and phosphine ligands bearing pyridyl groups are synthesized and fully characterized by X-ray single crystal analysis and density functional theory computations. The three clusters have an icosahedral Au13 core face-capped by two, four, and eight Cu atoms, respectively. All face-capping Cu atoms in the clusters are triply coordinated by thiolate or pyridyl groups. The surface ligands control the exposure of Au sites in the clusters. In the case of the Au13Cu8 cluster, the presence of 12 2-pyridylthiolate ligands still leaves open space for catalysis. All the 3 clusters are 8-electron superatoms displaying optical gaps of 1.8-1.9 eV. The thermal decomposition studies suggest that the selective release of organic ligands from the clusters is possible.

Powder particles in the mixer is used DEM analysis method to study and analyze the movement, it show up certain difference with different blade structure, and the paper points out that blade structure has apparent effect on the powder mixture in the mixer.

Based on the rate-dependent crystal plasticity theory, the user material subroutine is embedded into the abaqus / standard, which is able to describe the changes of grain orientation. The crystal plasticity finite element method is used to simulate the aluminum single crystal uniaxial tension and the stress and strain response is analyzed under different tension displacement.

The title compound, {[Mn(C22H15NO6)(C12H8N2)(H2O]·H2O}n, was obtained under solvothermal conditions. The Mn2+ cation exhibits a distorted penta­gonal–bipyramidal MnN2O5 coordination sphere with the water O atom and one of the phenanthroline N atoms in the axial positions. The cation is bridged by the doubly deprotonated 4,4′-[(4-carb­­oxy­benz­yl)nitrilo]­dibenzoate ligand, generating a polymeric chain parallel to [100]. O—H⋯O hydrogen bonding, as well as π–π inter­actions between neighbouring phenanthroline ligands, with centroid–centroid distances of 3.695 (1) Å, lead to the construction of a three-dimensional network.

Three-dimensional integrated modeling method and the numerical simulation of elastoplastic finite element are adopted in the paper. The mechanical response of the five holes anchorage is analyzed in certain prestressed state. The stress and strain distribution information of the anchor ring, clip and steel strand is obtained respectively, and the structure safety is discussed by investigating on the maximum stress and strain.

This article studied the blade structure on the influence of particle movement, as well as the force between blade and particles. Cone mixer is one of the commonly used equipment for powder mixed, usually, its blade’s movement driven by motor to stir particles, the structure of the blade to powder mixture has important effect, thus it’s important significance to explore the structure of the blade. The result based on the discrete element method to calculate the particle motion and stress with different blade structure, provides important help and reference for the design of the mixer blade.

In this thesis, PT7032 tower crane was taken as the research object, and the modeling and modal analysis of the overall structure were carried out using Abaqus software. The low-order natural frequencies and main vibration modes of this tower crane were obtained based on the above modal analysis. The analysis results will prevent the tower crane from working on resonant region, and will make preparations for the following dynamics response analysis of the tower crane.