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https://www.selleckchem.com/products/tvb-3664.html The results show that the proposed method is highly efficient and accurate in the reconstruction of the non-rectangular data.The process monitoring of the top side and the evaluation of surface quality were applied in adjustable ring mode (ARM) laser welding of 316 stainless steel by using visual monitoring and confocal sensor technology. Experiments were conducted in different power arrangements of an ARM laser. In this study, the process status was evaluated based on the area of keyhole entrance and the width of the pool. The geometric characteristics of the topside weld were measured by a confocal sensor. The shape of the fusion zone was analyzed based on its cross section. The process mechanism of a different mode of ARM laser welding was investigated by analyzing the process status and geometric characteristics of the surface bead. Experimental results showed that dual-mode laser welding could stabilize the keyhole entrance with a uniform weld surface formation in comparison to the pure ring-mode laser weld. The dual-mode laser also generated a wider molten pool with a wider fusion zone than the pure center laser weld.Increasing absorbance by lengthening the absorption path is a direct and effective approach to improve the signal-to-noise ratio of infrared gas absorption spectroscopy. However, once the absorption path is extended by designing and optimizing the gas cell structure to a certain extent, a bottleneck will appear due to the difficulties in the optical alignment and the interference effect. A modified tunable diode laser absorption spectroscopy system with a dual fiber loop configuration is proposed that can extend the effective absorption path length of the original multipass cell several times. The relevant theoretical model has been established and its effectiveness has been verified through experiments.In this paper, we report the fabrication and characterization of chalcogenide-based planar wave

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