DNAzyme amplified dispersion state change of gold nanoparticles and its dual optical channels for ultrasensitive and facile detection of lead ion in preserved eggs.

A dual-mode sensing platform for Pb was constructed based on the dual optical channels of Au NPs system with the amplification of DNAzyme, and it was successfully applied for Pb determination in preserved egg with satisfactory results. The presence of Pb activated the DNAzyme and induced the dispersion change of Au NPs in high salt concentration. The sequent absorption change of Au NPs was translated to the fluorescence change of carbon dots through FRET, and the scattering change was transferred to grey value of images involving the Tyndall effect.

The functionalization of gold nanoparticles as a novel platform for the highly efficient electrochemical detection of silver ions.

Herein, a novel electrochemical biosensor was constructed for the highly efficient detection of silver ions. A porous platform constructed with functionalized gold nanoparticles (AuPP) was electropolymerized on the gold electrode surface. The obtained polymer, analogous to a metal-organic framework, was used as the sensing platform together with cytosine-Ag-cytosine interaction for dual signal amplification.

Microstructure Features and High Temperature Oxidation Resistance of In-Situ TiN-Ti Composite Coatings by Plasma Transferred Arc Welding.

In order to improve the high temperature oxidation resistance of Ti6Al4V alloy, the in-situ TiN-Ti composite coatings were prepared with Ti-Cr-Ni-Nb powders by plasma transferred arc welding. Nitrogen gas was used as the transport gas and provided N source for the formation reaction of TiN. Microstructure features and high temperature oxidation behaviors of the composite coatings were studied.

Acupuncture improves postoperative symptoms of pigmented villonodular synovitis: A protocol for systematic review and meta analysis.

Background: Pigmented villonodular synovitis (PVNS) is a benign proliferative disease of synovial joint, synovial sac and tendon sheath. PVNS is usually treated by surgery, but postoperative joint dysfunction and pain will be accompanied, which seriously affects the quality of life. The purpose of this review is to evaluate the effectiveness and safety of this intervention in patients with pain and dysfunction caused by postoperative symptoms of PVNS.

Acupuncture and manual therapy for rotator cuff tears: A protocol for systematic review and meta analysis.

Background: The tears of rotator cuff is caused by the tears or aseptic inflammation of tendon tissue such as subscapular muscle, supraspinatus muscle, infraspinatus muscle, teres minor muscle, and so on, which make up the rotator cuff. Managements of rotator cuff disease often include acupuncture and manual therapy, usually delivered together. The aim of this review is to assess the effectiveness and safety of such interventions in patients with pain and dysfunction caused by rotator cuff tears.

Design of an InP/ZnO core-shell nanocone array solar cell with efficient broadband light absorption enhancement.

We design a standing semiconductor-dielectric core-shell nanocone array (CSNCA) that can not only concentrate the incident light into the structure, but also confine most of the concentrated light to the semiconductor (indium phosphide) core region, which remarkably enhances the light absorption of the more material-saving semiconductor core. We find guided resonance features along the radial and FP-resonant features along the axial direction by analyzing the electric field patterns at the absorption spectrum peaks. The CSNCA can support multiple higher-order HE modes, in comparison to the bare nanocone array (BNCA).

Influence of gold nanoparticles in different aggregation states on the fluorescence of carbon dots and its application.

Herein, gold nanoparticles (Au NPs) in solution protected by various concentration of DNA at different aggregation states were found to have different quenching effect to the fluorescence of carbon dots (CDs). Au NPs wrapped up in more amount of DNA were able to quench the fluorescence of CDs more effectively, and vice versa. Based on this phenomenon, a facile and novel fluorescence sensing platform without labeling was constructed by designing the sequence of DNA as the aptamer of the detection target.

Broadband light absorption enhancement in randomly rotated elliptical nanohole arrays for photovoltaic application.

Semiconducting nanohole arrays have been considered as a promising candidate for high-efficiency solar cells. In this paper, the optical absorption property of randomly rotated elliptical nanohole arrays consisting of 1×1, 2×2, and 4×4 cells has been investigated. It is found that the average ultimate efficiency of the arrays increases with the increase of the size of the supercell.

Toward high performance nanoscale optoelectronic devices: super solar energy harvesting in single standing core-shell nanowire.

Single nanowire solar cells show great promise for next-generation photovoltaics and for powering nanoscale devices. Here, we present a detailed study of light absorption in a single standing semiconductor-dielectric core-shell nanowire (CSNW). We find that the CSNW structure can not only concentrate the incident light into the structure, but also confine most of the concentrated light to the semiconductor core region, which boosts remarkably the light absorption cross-section of the semiconductor core.

Enhanced light absorption in perpendicular elliptical silicon nanocone array for solar cells.

Silicon nanowire-based arrays have demonstrated superior light trapping properties and great potential for next-generation photovoltaics. In this paper, we propose a perpendicular elliptical nanocone (PENC) array solar cell, which introduces an asymmetry in the direction parallel to the array surface in addition to the asymmetry in the direction normal to the array surface, which has been implemented in the circular nanocone (CNC) array. The PENC array displays more and higher resonant absorption peaks in the long wavelength compared with the CNC array.

Efficient broadband light absorption in elliptical nanohole arrays for photovoltaic application.

We propose a perpendicular elliptical silicon nanohole (PE-SiNH) array for light absorption in thin film silicon solar cells. Our analysis shows that this architecture is capable of increasing the absorption of a thin film silicon solar cell by 11.3% in comparison to that of the optimal circular SiNH array.

Broadband absorption enhancement in elliptical silicon nanowire arrays for photovoltaic applications.

Semiconducting nanowire arrays have emerged as a promising route toward achieving high efficiencies in solar cells. Here we propose a perpendicular elliptical silicon nanowire (PEE-SiNW) array for broadband light absorption in thin film silicon solar cells. Simulation results reveal that light absorption enhancement is originated from the split of the principal modes as well as the excitation of high order modes caused by the asymmetry of the elliptical nanowires and the enhanced mode coupling between adjacent elliptical nanowires attained by the appropriate arrangement of nanowires.

[Controlled study on treatment of cervical spondylopathy of the nerve root type with acupuncture, moxibustion and massage as main].

Objective: To probe into clinical value of comprehensive program of acupuncture, moxibustion and massage as main for treatment of cervical spondylopathy of the nerve root type.

Methods: Five centers, single blind, randomized controlled method were used, 660 cases were divided into a treatment group of 317 cases and a control group of 311 cases. They were treated respectively with comprehensive program of acupuncture, moxibustion and massage as main, and comprehensive program of physical therapy as main.