Two novel lanthanide mercury materials, [Gd(IA)3(H3O)2Hg3Br6]n·2nCl (1) and [La(IA)3(H3O)2Hg3Br6]n·2nCl (2) (IA = isonicotinic anion), have been prepared under solvothermal conditions and characterized by single-crystal X-ray diffraction techniques. They are isomorphic and characterized by a three-dimensional (3-D) framework structure. The lanthanide ions are bound by eight oxygen atoms to exhibit a square antiprismatic geometry.
View Article and Find Full Text PDFPenetrating head injury is a serious open cranial injury. In civilians, it is often caused by non-missile, low velocity flying objects that penetrate the skull through a weak cranial structure, forming intracranial foreign bodies. The intracranial foreign body can be displaced due to its special quality, shape, and location.
View Article and Find Full Text PDFPhys Chem Chem Phys
December 2022
Theoretically and experimentally, MXenes consisting of Mo and C have aroused much interest due to superconductivity in their films and even monolayer forms. Here, based on first-principles calculations, we systematically calculate the electronic structure, phonon dispersion, and electron-phonon coupling (EPC) of monolayer MoC (both T- and H-phases), MoC, and MoC. The results show that H-MoC ( = 2 or 3, = 1-3) always have lower total energies than their corresponding T phase and other configurations.
View Article and Find Full Text PDFDeuterium permeation through vanadium membranes in a wide range of pressures and the temperature range ~250-550 °C was experimentally investigated. Measurements on the same material were carried out in three laboratories with different features for an extended characterization and for cross-check validation. A unified equation for deuterium permeability in pure vanadium (99%) was provided as Φ=1.
View Article and Find Full Text PDFPhys Chem Chem Phys
April 2022
In recent years, three-dimensional (3D) high-temperature superconductors at ultrahigh pressure have been reported, typical examples are the polyhydrides HS, LaH, YH, To find high-temperature two-dimensional (2D) superconductors at atmospheric pressure is another research hotspot. Here, we investigated the possible superconductivity in a hydrogenated monolayer phosphorus carbide based on first-principles calculations. The results reveal that monolayer PC transforms from a semiconductor to a metal after hydrogenation.
View Article and Find Full Text PDFThe synthesis and characterization of fluorinated carbon nanotubes have been carried out under an inert gas containing fluorine. All of the samples have been characterized by x-ray diffraction (XRD), Fourier transform infrared spectroscopy (FTIR), solid-state nuclear magnetic resonance ((13)C and (19)F ss-NMR) and transmission electron microscopy (TEM) techniques. The comparison of the effects of various experimental parameters on the structure of fluorinated materials allows the disclosure of the fluorination mechanism.
View Article and Find Full Text PDFZhonghua Shi Yan He Lin Chuang Bing Du Xue Za Zhi
October 2011
Objective: To construct the recombinant plasmid containing S1 gene of new type of reovirus, and to study the expression of protein sigma1 in Vero cells.
Methods: The recombinant plasmid, named pC-S, was constructed by cloning S1 gene into vector pCAGGS/MCS. Then Vero cells were transfected with pC-S and collected at 24, 48, 72 h post transfection followed by SDS-PAGE and Western-Blot assay.
Zhonghua Shi Yan He Lin Chuang Bing Du Xue Za Zhi
April 2011
Objective: To develop a system to rescue virus by intracellular expression of T7 RNA Polymerase.
Methods: The gene of T7 RNA Polymerase was amplified and cloned to VR1012 by molecular biological technology. The expression plasmid VR-1a was then identified.