Factors influencing cancer-related fatigue in patients with esophageal cancer undergoing radiotherapy: pathway analysis.

Background: Cancer-related fatigue symptoms persist throughout the radiotherapy period in patients with esophageal cancer and show a continuous worsening trend, which seriously affects the quality of survival of patients. Therefore, monitoring patients' fatigue status promptly, recognizing highly fatigued patients, and providing physical and psychological support are essential for improving their quality of life. As a positive psychological trait, self-efficacy can influence the level of fatigue in patients undergoing radiotherapy for esophageal cancer.

Attenuation calibration method based on sensitivity correction in a Raman distributed temperature system.

A novel algorithm for attenuation calibration in distributed temperature sensors (DTS) based on Raman scattering is presented and experimentally demonstrated, for the first time to the best of our knowledge. Numerical simulation is implemented to explore the signal distribution of Stokes and anti-Stokes lights along sensing fiber with the traditional DTS configuration. The proposed attenuation calibration method is to process the directly detected signal related to the temperature profile and calculate the calibration coefficient to maintain the linearity of temperature measurement and its uniformity along the whole fiber.

Ultrawide temperature range operation of SPR sensor utilizing a depressed double cladding fiber coated with Au-Polydimethylsiloxane.

A surface plasmon resonance (SPR) temperature sensor on the basis of depressed double cladding fiber (DDCF) is theoretically proposed and experimentally demonstrated for the first time. Simulation analysis implies that the SPR fiber optic structure consisting of a multimode fiber (MMF) inserted into an 8 mm long DDCF is highly sensitive to the refractive index (RI) of the surrounding environment, owing to their mismatched cores, large discrepancy in cladding diameters, and the depressed inner cladding in DDCF. The experimental results further verify that the highest RI sensitivity is 7002 nm/RIU established with a 50nm Au coated DDCF-SPR sensor.

All-fiber SERS sensing with a depressed double cladding fiber probe embedded in a microfluidic chip.

A fiber surface-enhanced Raman scattering (SERS) probe based on the depressed double cladding fiber (DDCF) is demonstrated. Due to the depressed cladding, the optical field distribution of the DDCF is more approachable to the outer surface than that of a no core fiber without depressed cladding, improving the excitation efficiency for generating Raman scattered light. The cladding diameter of the DDCF is only 80 µm, which is smaller than the core diameter (105 µm) of the input multimode fiber (MMF).

[A dual-band algorithm to detect contaminants with low visibility on chicken carcass surface].

A novel dual-band algorithm for detecting contaminants with low visibility on chicken carcass surface based on hyperspectral image was proposed. Firstly, The 675 nm band image, in which the identity of the intensity within ROI (Region of Interest) is the best and the spectrum difference between ROI and the edge of the ROI is the biggest, was chosen from the hyperspectral data for binarization and the mask was extracted by using region growing on the biggest connected area. Then the "and" operation between the mask and the 400 nm band image with the largest discriminability of contaminants was carried out.