Superellipse Equation Describing the Geometries of Tree Rings.

Our previous study using 41 tree rings of one Mill. disc indicated that the superellipse equation can accurately fit its tree-ring shape. This study further used the superellipse equation (xan+yβn=1 ) to model the geometries of 1090 tree rings of discs collected from five sites in Denmark.

Bufadienolides from Chansu Injection Synergistically Enhances the Antitumor Effect of Erlotinib by Inhibiting the KRAS Pathway in Pancreatic Cancer.

The Chansu injection (CSI), a sterile aqueous solution derived from Chansu, is applied in clinical settings to support antitumor and anti-radiation treatments. CSI's principal active components, bufadienolides (≥90%), demonstrate potential effects on pancreatic cancer (PDAC), but their underlying mechanisms remain unclear. This study aimed to elucidate the antitumor effects and pathways associated with CSI in PDAC.

How Does AI Affect College? The Impact of AI Usage in College Teaching on Students' Innovative Behavior and Well-Being.

Currently, there is a growing trend for college and university teachers to use AI in their teaching work. However, existing research explores the impact of teachers' usage of AI in the workplace on students. Based on resource preservation theory, this study examined the mechanism of the usage of AI in teaching on students' innovative behavior and well-being with a sample of 356 college students from Zhejiang Province.

Chemogenetic Inhibition of Prefrontal Cortex Ameliorates Autism-Like Social Deficits and Absence-Like Seizures in a Gene-Trap Haploinsufficiency Mouse Model.

Background: (absent, small, or homeotic-like 1), a histone methyltransferase, has been identified as a high-risk gene for autism spectrum disorder (ASD). We previously showed that postnatal severe deficiency in the prefrontal cortex (PFC) of male and female mice caused seizures. However, the synaptic mechanisms underlying autism-like social deficits and seizures need to be elucidated.

Study on the mechanism of acupuncture to improve mild cognitive impairment in hypertension by regulating intestinal microbiome.

High blood pressure is a significant risk factor for cardiovascular diseases and is linked to an increased risk of mild cognitive impairment (MCI). The lack of effective treatments for these conditions highlights the urgent need for novel therapeutic approaches. Recent research suggests that the gut microbiota-brain-gut axis plays a crucial role in the pathogenesis of hypertension and MCI by regulating the nervous, endocrine, and immune systems.