Long-term outcome of robotic-guided closed reduction internal fixation for Delbet II femoral neck fractures in children.

Objective: To retrospectively analyze and assess the long-term effectiveness of robotic navigation and traditional closed reduction internal fixation in the treatment of Delbet type II femoral neck fracture in children.

Methods: A total of fifty-five patients diagnosed with pediatric Delbet type II femoral neck fracture, who were admitted to Foshan Hospital of Traditional Chinese Medicine between January 2018 and June 2022, were included in this study. Among them, 22 cases of nailing under robotic navigation were set as the observation group, and 33 cases of nailing under fluoroscopy of the C-arm machine were set as the control group.

Cyclodextrin-induced phase transformation of cesium copper bromide perovskite.

Phase transformation represents a fascinating way to tune the structural and optical properties of metal halide perovskites. Macrocyclic cyclodextrin could trigger transformation of cesium copper bromide, driven by strong interactions of the macrocyclic hydroxyl groups with the perovskite cesium and bromide ions.

Machine-learning-assisted SERS nanosensor platform toward chemical fingerprinting of Baijiu flavors.

A novel fingerprinting platform for multiplex detection of flavor molecules in Baijiu was developed by using a surface-enhanced Raman scattering (SERS) nanosensor array in combination with machine learning. The SERS sensors were constructed by core-shell FeO@Ag nanoparticles modified with molecules carrying end-groups of hydroxyl, pyridyl, methyl, and amino, respectively, which interacted with flavors and led to changes in the sensors' spectra. All the Raman spectra acquired from the nanosensor array contacting with the sample were concatenated into a single SERS super-spectrum, representing the flavor fingerprint which was recognized through machine learning.

Novel Sb-SnO Electrode with Ti Self-Doped Urchin-Like Rutile TiO Nanoclusters as the Interlayer for the Effective Degradation of Dye Pollutants.

Stable and efficient SnO electrodes are very promising for effectively degrading refractory organic pollutants in wastewater treatment. In this regard, we firstly prepared Ti self-doped urchin-like rutile TiO nanoclusters (TiO NCs) on a Ti mesh substrate by hydrothermal and electroreduction to serve as an interlayer for the deposition of Sb-SnO . The TiO NCs/Sb-SnO anode exhibited a high oxygen evolution potential (2.

When MXene (TiCT) meet Ti/PbO: An improved electrocatalytic activity and stability.

Stable electrode materials with high catalytic activity are urgently required for electrochemical degradation of refractory organic pollutants in wastewater treatment. Herein, high conductive MXene (TiCT) was firstly fabricated by electrophoretic deposition (EPD) as an interlayer for preparing a novel PbO electrode. The well-conducted TiCT interlayer significantly improved the electrochemical performance of the EPD-2.

Higher quantum efficiency and moisture resistance of all-inorganic halide perovskite nanocrystal films in situ fabricated with cyclodextrin.

Supermolecule β-cyclodextrin was used to assist CsPbBr3 film fabrication. In situ growth of nanocrystals was effectively confined through strong interactions between perovskite Pb2+ ions and β-CD hydroxyl groups, producing a compact and smooth film. The quantum efficiency achieved was 85.

Exploration of organic-inorganic hybrid perovskites for surface-enhanced infrared spectroscopy of small molecules.

The organic-inorganic hybrid perovskites efficiently enhance the infrared absorption of small molecules. It is suggested that the quantum wells of perovskites enable the electrons of the perovskites to be excited by light in the infrared region. The exploration has opened a new path for chemical sensing through infrared spectroscopy.

Implementation of an automatic and miniature on-line multi-parameter water quality monitoring system and experimental determination of chemical oxygen demand and ammonia-nitrogen.

An automatic, miniature and multi-parameter on-line water quality monitoring system based on a micro-spectrometer is designed and implemented. The system is integrated with the flow-batch analysis and spectrophotometric detection method. The effectiveness of the system is tested by measuring chemical oxygen demand (COD) and ammonia-nitrogen in water.

Plasmonic swings during the Fenton reaction: catalytic sensing of organics in water via fullerene-decorated gold nanoparticles.

Fullerene-decorated gold nanoparticles were used to catalyse the Fenton reaction and the electron transfer cycle of the catalyst shifts the gold surface plasmon resonance back and forth. The plasmonic swing frequency is in accord with the redox reaction rate and could be applied for detection of organics in water.

[Rapid determination of total phosphorus by ultrasonic assisted sample digestion-spectrum analysis].

Aiming at the technological shortage of national standard method for the determination of total phosphorus, a rapid determination method of total phosphorus based on ultrasonic assisted sample digestion-spectrum analysis was put forward, and the on-line analysis experiment system was designed. Relying on the experiment system, the experimental method and technology was studied. In view of the actual environmental water samples, contrast test experiment with the national standard method for determination method of total phosphorus was carried on.

[Simultaneous detection of phenol and anionic surfactant in water based on continuous spectrum].

Phenol and anionic surfactant are important indices for water-quality. Based on improvement and optimization of standard methods (spectrophotometry) for the two indices, we integrated the respective two color-extractants into a composited reagent. Using a self-developed microspectrometer with a design of splitting behind and collection of continuous spectrum signal (340-770 nm) in real time, a compound detection system was constructed.

Intracellular delivery of a membrane-impermeable enzyme in active form using functionalized gold nanoparticles.

Gold nanoparticles were coated with a short peptide to promote intracellular delivery of membrane-impermeable proteins. Through microscopy and enzyme assays, we demonstrated the particles were able to transport functional enzymes into a variety of cell lines. Significantly, the transported proteins were able to escape from endosomes.

Determination of myriocin in natural and cultured Cordyceps cicadae using 9-fluorenylmethyl chloroformate derivatization and high-performance liquid chromatography with UV-detection.

A simple and sensitive reversed-phase liquid chromatographic method, based on the precolumn derivatization with 9-fluorenylmethyl chloroformate, was developed for the determination of myriocin. The derivatization reaction was performed in organic solvents of pyridine and tetrahydrofuran at 40 degrees C. Several factors influencing the derivative yield were investigated and optimized.

Catalytic microcapsules assembled from enzyme-nanoparticle conjugates at oil-water interfaces.

Involuntary association: Anionic beta-galactosidase enzymes associate with positively charged Au nanoparticles to produce reduced-charge conjugates, which assemble at oil-water interfaces to result in stable microcapsules (see picture). The microcapsules were formed quickly and showed high enzymatic activity, which makes them promising materials for biotechnology applications.

Disruption of HepG2 cell adhesion by gold nanoparticle and Paclitaxel disclosed by in situ QCM measurement.

Cell adhesion is a crucial issue for cytotoxicity or anticancer effectiveness for tumor cells. However, how both nanoparticles and drugs affect cell adhesion has not yet been defined. Herein, we report for the first time that gold nanoparticles and Paclitaxel can disrupt adhesion, as well as enhance apoptosis of HepG2 cell individually and synergistically, as observed by in situ measurement using quartz crystal microbalance (QCM).

[A new real-time method monitoring behaviors of living cells in vitro-PCC].

A method combinating piezoelectric-biochip technique with cell culture technique in vitro has been developed. Piezoelectric cell-based chip (PCC) can continously monitor the behaviors of living cells attached to or spreaded on surfaces. The method measures the resonant frequency (f), the dissipation energy (D) and impedance (Z), in real time.

[Current reviews in aptamers].

Aptamers are oligo-nucleotides which are selected by SELEX (systematic evolution of ligands by exponential enrichment) in vitro, it can bind protein or other small molecules with high specificity and affinity. Researches on aptamers have achieved much progress in biosensor, drug development and nano technology. This article has reviewed the researches and applications of aptamers in the past two years.

Highly reproducible hybridization assay of zeptomole DNA based on adsorption of nanoparticle-bioconjugate.

A nanoparticle-bioconjugate was formed by homogeneous hybridization of one polynucleotide target with two oligonucleotide probes labelled by thiol and a nanoparticle, respectively. Deposition of the nanoparticle-bioconjugate on a gold surface by thiol-gold reaction was monitored in situ by quartz crystal microbalance (QCM) and applied for flow analysis of zeptomole amounts of polynucleotide. The formation in solution and adsorption of thiolated conjugates on gold could be fast, uniform and effective, and has been successfully exploited to construct a highly reproducible and sensitive platform for detection of target sequences.