A fault diagnosis method for rolling bearing based on gram matrix and multiscale convolutional neural network.

The safety and reliability of rotating machinery hinge significantly on the proper functioning of rolling bearings. In the last few years, there have been significant advances in the algorithms for intelligent fault diagnosis of bearings. However, the vibration signals collected by machines are inevitably affected by irrelevant noise because of the complex working environments of bearings.

HIV risk and influence factors among MSM who had sought sexual partners in core venues: a continuous sentinel surveillance in 2010-2022.

Background: Seeking sexual partners in men who have sex with men (MSM) venues has been regarded as a high-risk behavior for HIV among MSM. Nevertheless, with the implementation of venue-based interventions and the change in the way MSM seek sexual partners, the continued status of MSM venues as the HIV risk factor remains inconclusive. This study endeavors to delve into this ambiguity by examining the MSM sexual contact network (SCN) as a foundation.

Prognostic implications of immune classification based on PD-L1 expression and tumor-infiltrating lymphocytes in endocervical adenocarcinoma.

Background: Endocervical adenocarcinoma (ECA) comprises a heterogeneous group of diseases whose incidence has increased significantly in recent decades. ECA can be histologically classified into human papillomavirus-associated (HPVA) and non-HPVA (NHPVA) types. Given the variability in pathological features and clinical behavior between the subtypes, evaluating their respective immune microenvironments is essential.

Relationship Between Postoperative Oxidative Stress Levels and Corneal Endothelial Cell Loss After Phacoemulsification in Diabetic Patients with Cataract.

Objective: To investigate the relationship between postoperative oxidative stress and corneal endothelial cell loss in diabetic patients with cataract.

Methods: One hundred and twenty patients who underwent phacoemulsification were selected, including 80 diabetic patients with cataract and 40 patients with ordinary cataracts. Corneal endothelial cell loss was recorded, and the endothelial cell density (ECD), the proportion of hexagonal cells, and the corneal thickness within the central corneal area were compared.