A Vibration Fault Identification Framework for Shafting Systems of Hydropower Units: Nonlinear Modeling, Signal Processing, and Holographic Identification.

The shafting systems of hydropower units work as the core component for the conversion of water energy to electric energy and have been running for a long time in the hostile hydraulic-mechanical-electrical-coupled environment-their vibration faults are frequent. How to quickly and accurately identify vibration faults to improve the reliability of the unit is a key issue. This study proposes a novel shafting vibration fault identification framework, which is divided into three coordinated stages: nonlinear modeling, signal denoising, and holographic identification.

[Inhibitory effects of curcumin on inflammatory cytokines in rats with paraquat poisoning].

Objective: To explore the mechanism of paraquat (PQ) poisoning and to observe the changes in inflammatory cytokines in PQ-exposed rats treated in different ways.

Methods: Fifty 8-week-old clean male Wistar rats were randomly divided into high-dose curcumin plus conventional treatment group, low-dose curcumin plus conventional treatment group, high-dose curcumin group, PQ poisoning group, and blank control group. On days 1, 3, 5, 7, 14, and 21 after PQ exposure, serum levels of transforming growth factor-β₁(TGF-β₁) , tumor necrosis factor-α (TNF-α) , and interleukin-6 (IL-6) were measured.

[Antagonistic effect of curcumin on lipid peroxidation of rats poisoned by paraquat].

Objective: To explore the pathogenesis of paraquat poisoning and observe the change in lipid peroxidation of rats treated with different doses of curcumin.

Methods: A total of 50 8-week-old male Wistar rats (clean grade) were randomly divided into high-dose curcumin plus conventional treatment group, low-dose curcumin plus conventional treatment group, high-dose curcumin treatment group, poisoned group, and blank control group. Glutathione peroxidase (GSH-Px), catalase (CAT), superoxide dismutase (SOD), and malondialdehyde (MDA) levels in rat serum were measured at 1, 3, 7, 14, and 21 d post paraquat injection.

Neuroprotective effect of pAkt and HIF-1 α on ischemia rats.

Objective: To explore the neuroprotective effect of pAkt and HIF-1 α on ischemia rats.

Methods: The rat model of cerebral ischemia which induced by permanent middle cerebral artery occlusion was established, Silybin were given respectively. The behavior was measured by modified Longa method, brain water content were measured by the dry-wet method.