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The high-precision die attach technology is a key process in high-density integrated circuits such as WLP Fan-out, Multi-chip stacking, 3D interconnect and other advanced packaging processes. According to WLP Fan-out process requirements, die attach accuracy must be within ±15µm, even ± 6µm, and the stage temperature is required to be over 180°C and its uniformity can't above ± 3 °C. Those requirement...
In this paper, we design a micro gripper which is widely used in the microscopic world, using a flexible object with tens of micrometers in diameter as object studied. Different system structure models is established, and the optimal structure is explored in different materials and different structures. The mesh is added, the constraints are added, and the equivalent stress and equivalent deformation...
We present a novel and high-precision microscopic vision modeling method, which can be used for 3D data reconstruction in micro-gripping system with stereo light microscope. This method consists of four parts: image distortion correction, disparity distortion correction, initial vision model and residual compensation model. First, the method of image distortion correction is proposed. Image data required...
Cirrhotic patients with dysfunctional and/or low numbers of leukocytes are often infected with bacteria, especially Gram-negative bacteria, which is characterized by producing lipopolysaccharide (LPS). Granulocyte–macrophage colony-stimulating factor (GM-CSF) is a pleiotropic cytokine that influences the production, maturation, function, and survival of various immune cells. In this paper, we reviewed...
Purpose This study aimed to evaluate the efficacy and safety of entecavir, lamivudine and telbivudine for treating patients with HBV-ACLF and to validate the Tongji prognostic predictor model (TPPM) in these patients. Methods In this retrospective study, we enrolled 283 patients with HBV-ACLF (100 treated with entecavir, 98 treated with lamivudine and 85 treated with telbivudine). There were no...
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