Three transmission properties of the perfect vortex beam.

We propose that a perfect vortex beam (PVB) exhibits three major properties, namely, perfect property, self-focusing property, and self-healing property. Our experimental results indicate that PVB manifests superb perfect property, impervious to the influence of orbital angular momentum during the anti-diffraction stage, but ultimately transitioning to the self-focusing property during the self-focusing stage. The self-focusing property of PVB can significantly augment its transmission performance and be tailored through adjustments to the ring radius, ring thickness, and self-focusing ratio to meet the needs of various optical applications.

Combination of Preoperative Circulating Tumor Cell Count and Neutrophil-Lymphocyte Ratio for Prognostic Prediction in Hepatocellular Carcinoma Patients after Curative Hepatectomy.

Background: Both the preoperative neutrophil-lymphocyte ratio (NLR) and circulating tumor cell count (CTC) are associated with poor prognosis in hepatocellular carcinoma (HCC). The purpose of this study was to explore the prognostic value of these two indices (CTC-NLR) in HCC.

Methods: We retrospectively collected demographic and clinical data, including NLR and CTC, from 97 patients with HCC who underwent curative hepatectomy at our institution from March 2014 to May 2017.

A new method of establishing orthotopic bladder transplantable tumor in mice.

Objective: The present study aims to find a convenient, rapid, and stable method to establish bladder tumor in mice.

Methods: Female Balb/C-nu-nu nude mice (or female T739 mice) were narcotized by sodium pentobarbital at a dosage of 60 mg/kg. The stylet of the 24# venous retention needles was bent in a 5° to 7° angle at a distance of 15 mm from the needlepoint to form a circle with 2.

[Temporal coherent control in Er(3+)-doped telluride glass].

The authors achieved the temporal coherent control in an Er(3+)-doped telluride glass, one kind of disordered solids. The upconversion at 670 nm was modulated and the dephasing time was simulated as 300 fs. Moreover, the photon echo signal gave the dephasing time due to the phonon interaction.