Construction and validation of a nomogram predictive model for assessing the risk of surgical site infections following posterior lumbar fusion surgery.

Surgical site infections (SSIs) are a significant concern following posterior lumbar fusion surgery, leading to increased morbidity and healthcare costs. Accurate prediction of SSI risk is crucial for implementing preventive measures and improving patient outcomes. This study aimed to construct and validate a nomogram predictive model for assessing the risk of SSIs following posterior lumbar fusion surgery.

[Synthesis and absorption spectra properties of Au-Ag alloy nanoparticles using gallic acid as reductant].

Gold-silver alloy nanoparticles with a homogeneous size distribution and good stability were synthesized in aqueous solution by one-step reduction with gallic acid as reductant in the absence of other stabilizers for the first time. The absorption spectra of as prepared gold-silver alloy nanoparticles under different reaction temperatures and with various gold-silver mole ratios were studied. The absorption spectra exhibit only one single peak with the maximum wavelength located between the absorption peaks of Au nanoparticles and Ag nanoparticles, however, the absorption spectrum of the physical mixtures of Au nanoparticles and Ag nanoparticles exhibits two absorption peaks coming from their corresponding monometallic metal nanoparticles, suggesting primarily the formation of the alloy nanoparticles.

[Applications of quantum dots to biological probes].

Quantum dots (QDs) have shown unique optical properties compared with traditional organic dyes. Now, more and more attention has been paid to them, especially in the fields of biological medicine and materials. Much work about QDs application in biology has been done by many researchers.

[Spectroscopy study of aqueous CdTe quantum dots synthesized by microwave irradiation method].

Water-soluble CdTe nanocrystals capped with cysteamine were synthesized rapidly in aqueous solution by microwave irradiation with controllable temperature. Absorption and fluorescence spectra showed that these prepared CdTe quantum dots had good optical properties. The structure and diameter were characterized by the transmission electron microscopy (TEM) and X-ray powder diffraction (XRD).