Comparative Study on Laser Welding Thick-Walled TC4 Titanium Alloy with Flux-Cored Wire and Cable Wire.

In the welding process of thick-walled titanium alloys, the selection of the wire type is one of the critical factors affecting the welding quality. In this paper, flux-cored and cable wires were used as filler materials in the welding of thick-walled titanium alloys. The macrostructure, microstructure, texture, and grain size of both welded joints were compared by employing an optical microscope (OM), scanning electron microscope (SEM), and transmission electron microscope (TEM), and the tensile and impact properties were also evaluated.

The influence of benign essential blepharospasm on dry eye disease and ocular inflammation.

Purpose: To study the influence of blepharospasm on dry eye disease by analyzing the clinical features, tear cytokine, and treatment response of patients with dry eye disease accompanied by benign essential blepharospasm.

Design: Prospective case series study.

Methods: Forty adults with a diagnosis of benign essential blepharospasm (BEB) and dry eye disease (DED) were consecutively recruited.

[A method of medical device power supply maintenance].

Based on the circuit board, we draw its circuit diagram. By analyzing the circuit diagram, we maintain medical device power supply and achieve the troubleshooting goal quickly.

[Design of dynamic skin impedance detector for the back electrode of high frequency surgical equipment].

For the conventional high frequency(HF) surgical equipment, the contact impedance between the two back electrodes when they are gluing with skin is 50-200 Omega. If the contact impedance between the two electrodes is either too large or too small, an alarm is needed. This detector is designed not only to detect the contact condition between skin and the back electrodes, but also to monitor and alarm the dynamic change of the contact impedance.