Treatment of Thoracolumbar Fractures Through Different Short Segment Pedicle Screw Fixation Techniques: A Finite Element Analysis.

Objective: To compare the von Mises stresses of the pedicle screw system and the displacement of injured vertebrae using 3-D finite element analysis, and to evaluate the curative effect of the pedicle screw system.

Methods: Finite element methods were used for biomechanical comparison of four posterior short segment pedicle screw fixation techniques. The different pedicle screw models are traditional trajectory (TT), Universal Spine System (USS), cortical bone trajectory (CBT), and CBT at the cranial level and pedicle screw (PS) at the caudal level (UP-CBT).

Cs Bi O(Ge O ) (CBGO): A Larger SHG Effect Induced by Synergistic Polarizations of BiO Polyhedra and GeO Tetrahedra.

A cesium bismuth germanate, Cs Bi O(Ge O ) (CBGO), was synthesized by a traditional high-temperature solid-state reaction. Its structure features a 3D network composed of a 1D chains composed of Bi O dimers that are further bridged by Ge O dimers, forming tunnels of seven member rings (MRs) that are filled by the Cs cations. CBGO exhibits extraordinary larger second harmonic generation (SHG) response of about 13.

Highly Polarizable Hg Induced a Strong Second Harmonic Generation Signal and Large Birefringence in LiHgPO.

A new ultraviolet nonlinear optical material, namely LiHgPO, was synthesized using the mild hydrothermal method. The structure of LiHgPO features novel double layers constructed by severely distorted HgO octahedra and PO tetrahedra, which are further interconnected by LiO tetrahedra to form a three-dimensional structure. LiHgPO exhibits a very strong second harmonic generation (SHG) response of 11.

(HO)HCsNb(IO) and SrNbO(IO): a facile synthetic method using hydrofluoric acid as a solubilizer.

By using hydrofluoric acid as a solubilizer, the first alkali-metal niobium iodate and an alkali-earth metal niobium iodate, i.e. (H3O)HCs2Nb(IO3)9 and SrNbO(IO3)5, have been obtained.

HBa(IO)(IO) and HBa(IO)(IO): Explorations of Second-Order Nonlinear Optical Materials in the Alkali-Earth Polyiodate System.

Two new barium polyiodate compounds in the alkali-earth system, namely, HBa(IO)(IO) ( Fdd2) and HBa(IO)(IO) ( P1̅) have been obtained through hydrothermal reaction. Interestingly, the structures of both compounds feature different polyiodate groups, i.e.

Near-infrared light-triggered theranostics for tumor-specific enhanced multimodal imaging and photothermal therapy.

The major challenge in current clinic contrast agents (CAs) and chemotherapy is the poor tumor selectivity and response. Based on the self-quench property of IR820 at high concentrations, and different contrast effect ability of Gd-DOTA between inner and outer of liposome, we developed "bomb-like" light-triggered CAs (LTCAs) for enhanced CT/MRI/FI multimodal imaging, which can improve the signal-to-noise ratio of tumor tissue specifically. IR820, Iohexol and Gd-chelates were firstly encapsulated into the thermal-sensitive nanocarrier with a high concentration.