[Value of Baseline Calcitonin for Differential Diagnosis of Medullary Thyroid Cancer].

Objective: To analyze the efficacy of using baseline calcitonin (bCtn) for auxiliary diagnosis of medullary thyroid cancer (MTC) in the hypercalcitoninemic population with thyroid nodules and to explore the relationship between preoperative levels of bCtn and carcinoembryonic antigen (CEA) and MTC staging.

Methods: The clinical, pathological, imaging, and lab test data of 58 MTC patients and 84 non-MTC patients were retrospectively reviewed in the study. The patients were hospitalized at West China Hosptal, Sichuan University between 2011 and 2020.

[Dynamic simulation analysis of effects of project of ditching for drain on snail control and flood prevention security in Dongting Lake region].

Objective: To evaluate the effects of the project of ditching for drain on snail control and flood prevention security and explore the optimal engineering design plan in Dongting Lake region.

Methods: A retrospective study was performed on the previous studies about the project of ditching for drain. The reference values of project indices were determined.

Effect of protease and cellulase on the characteristic of activated sludge.

Sludge dewatering is a key part of sludge disposal since it can greatly reduce the volume of sludge and thus improve the treatment effect for handling and disposing. This study investigated the potential benefits of enzymatic pretreatment on activated sludge dewatering with protease and cellulase as a protein and polysaccharide degrading enzyme, respectively. Capillary suction time (CST) and the solid content after centrifugation were used to evaluate sludge dewatering.