Effects of Tai Chi on anxiety and theta oscillation power in college students during the COVID-19 pandemic: A randomized controlled trial.

Background: College students, especially during the COVID-19 pandemic, face substantial psychological stress. This study investigates the impact of Tai Chi (TC) practice on anxiety levels and theta oscillatory power activation characteristics among college students, aiming to provide empirical evidence for their psychological well-being.

Methods: In this randomized controlled trial with 45 healthy college students, brainwave activity and changes in anxiety levels were measured.

Grape Seed Proanthocyanidins Protect Pancreatic β Cells Against Ferroptosis via the Nrf2 Pathway in Type 2 Diabetes.

Pancreatic β cell damage is the primary contributor to type 2 diabetes mellitus (T2DM); however, the underlying mechanism remains nebulous. This study explored the role of ferroptosis in pancreatic β cell damage and the protective effects of grape seed proanthocyanidin extract (GSPE). In T2DM model rats, the blood glucose, water intake, urine volume, HbA1c, and homeostasis model assessment-insulin resistance were significantly increased, while the body weight and the insulin level were significantly decreased, indicating the successful establishment of the T2DM model.

Physical exercise habits are related with reduced prevalence of falling among elderly women in China.

Background: Although some studies have examined the association between exercise and falls, most have focused on specific exercises, and the results have been inconsistent. In addition, there is a lack of evidence on elderly Chinese women who have different living and exercise habits compared to those in other countries. Therefore, this study aimed to investigate whether physical exercise is associated with falls in elderly Chinese women.

Comparative analysis of ankle injury kinematics and dynamics in basketball players: forefoot landing vs. rearfoot landing modes.

Objective: To compare the differences in ankle joint parameters of basketball athletes between the forefoot and rearfoot landing and to investigate the injury mechanism of ankle joints in different landing modes.

Methods: Twenty level II male basketball athletes were selected as subjects in this study. The landing movements of these athletes were assigned into a forefoot landing mode and a rearfoot landing mode.

Ultrasensitive optical modulation in hybrid metal-perovskite and metal-graphene metasurface THz devices.

Implementation of efficient terahertz (THz) wave control is essential for THz technology development for applications including sixth-generation communications and THz sensing. Therefore, realization of tunable THz devices with large-scale intensity modulation capabilities is highly desirable. By integrating perovskite and graphene with a metallic asymmetric metasurface, two ultrasensitive devices for dynamic THz wave manipulation through low-power optical excitation are demonstrated experimentally here.

Graphene-integrated toroidal resonance metasurfaces used for picogram-level detection of chlorothalonil in the terahertz region.

Toroidal dipole resonance can significantly reduce radiation loss of materials, potentially improving sensor sensitivity. Generally, toroidal dipole response is suppressed by electric and magnetic dipoles in natural materials, making it difficult to observe experimentally. However, as 2D metamaterials, metasurfaces can weaken the electric and magnetic dipole, enhancing toroidal dipole response.

Multispectral higher-order Fano resonant metasurface based on periodic twisted DNA-like split ring arrays with three modulation methods.

The active modulation of the Fano resonance is rare but desirable. However, recent studies mostly focused on a single modulation method and few reported the use of three photoelectric control methods. A tunable graphene DNA-like metamaterial modulator with multispectral Fano resonance is demonstrated.

Protective Effects of Grape Seed Proanthocyanidins on the Kidneys of Diabetic Rats through the Nrf2 Signalling Pathway.

Background: Diabetic nephropathy (DN) is the most common cause of end-stage renal failure. Grape seed proanthocyanidin extract (GSPE) is a powerful antioxidant that is believed to protect the kidney through antioxidant action. However, the underlying mechanism of GSPE protection against DN remains unclear.

Tunable bifunctional polarization-independent metamaterial device based on Dirac semimetal and vanadium dioxide.

In this study, a tunable bifunctional polarization-independent metamaterial device based on Dirac semimetal films (DSFs) and vanadium dioxide () is investigated. At the insulator state, a polarization-independent electromagnetically induced reflectance effect can be achieved via destructive interference between bright and dark modes. When transitions to a metallic state, the proposed device behaves as a dual-band polarization-independent absorber with 99.

Tunable bifunctional terahertz metamaterial device based on Dirac semimetals and vanadium dioxide.

A tunable bifunctional terahertz (THz) metamaterial device based on Dirac semimetal films (DSFs) and VO is presented. The insulator-to-metal phase transition of VO enables bifunctional asymmetric transmission and dual-directional absorption to be switched in the THz range. When VO serves as a dielectric, tunable broadband asymmetric transmission of linearly polarized THz waves can be achieved.

Mammotome-assisted removal with minimal incision of large juvenile fibroadenoma of breast: A case report.

Introduction: Giant juvenile breast fibroadenoma can cause deformity and should be excised. Cosmesis is an important consideration in young patients.

Patient Concerns: The patient was admitted to our hospital for a mass of 6 × 6 cm in her left breast.

Tunable terahertz metamaterial absorber based on Dirac semimetal films.

In this paper, the tunable properties of metamaterial absorbers based on 3D Dirac semimetal films (DSFs) in the terahertz (THz) regime are discussed in theory. We consider the absorbers with square-shaped, circular-patch, and cross-shaped resonators. These resonances are theoretically polarization-insensitive at normal incidence because of their 90° rotational symmetry and can achieve perfect absorption in numerical simulation.

[Expression of hypoxia inducible factor-1α and insulin in pancreatic cancer and their correlation].

Objective: To explore the correlation between the expressions of hypoxia inducible factor-1α (HIF-1α) and insulin in pancreatic cancer.

Methods: HIF-1α and insulin expression was detected by immunohistochemistry in the center and the edge of pancreatic adenocarcinoma specimens of 65 cases. Western blot was used to detect HIF-1α expression and insulin level in the center and the edge of pancreatic adenocarcinoma specimens of 28 cases.

ShRNA silencing glycogen synthase kinase-3 beta inhibits tumor growth and angiogenesis in pancreatic cancer.

Glycogen synthase kinase-3 beta (GSK-3β), a serine/threonine protein kinase, plays a vital role in the tumorigenesis of many cancers, but its role in pancreatic cancer remains unknown. In this study, we showed that GSK-3β was aberrantly activated in pancreatic cancer. GSK-3β knockdown resulted in arrested proliferation and increased apoptosis in pancreatic cancer cell lines.

Insulin promotes proliferative vitality and invasive capability of pancreatic cancer cells via hypoxia-inducible factor 1alpha pathway.

This study examined whether insulin-stimulated hypoxia-inducible factor 1alpha (HIF-1alpha) expression plays a crucial role in promoting the proliferative vitality and invasive capability in human pancreatic cancer cells. PANC-1 cells were divided into three groups: Control group, insulin group and insulin+YC-1 (a pharmacological inhibitor of HIF-1alpha) group in terms of different treatments. Cells in the insulin group or insulin+YC-1 group were treated with insulin (0.