Plasticity Mechanisms in Nanostructured Cubic Boron Nitride: Internal Defects and Amorphous Layers.

Nanostructured cubic boron nitride (NS-cBN) has attracted significant attention due to its high hardness and excellent thermal stability, yet a systematic strategy to balance strength and toughness through atomically structural design remains elusive. Here, we integrate plasticity theory with large-scale atomistic simulations to elucidate the size-dependent roles of internal defects, i.e.

Light incubation affects embryo development and post-hatch performance in poultry.

Light is one of the important environmental factors affecting the growth, reproduction, and performance of poultry. It stimulates retinal photoreceptor cells to form visual imaging, enabling animals to adapt to external environments. Light also regulates non-visual physiological responses such as circadian rhythms, pupillary reflex, sleep regulation, and melatonin secretion.

Bioinspired Cellulose-Based Hygroscopic Aerogel with Hierarchical Encapsulation Design for Sustainable Passive Daytime Cooling via Synergistic Dual Mechanisms.

Passive radiative cooling technology shows great application in next-generation thermal regulation fields, but still suffers from thermodynamic limits. Combining evaporation cooling and radiative cooling offers a promising solution to address this drawback, however, existing dual-functional devices exhibit poor efficiency and structure stability. Inspired by the vapor transfer process in the tree, an encapsulate-structured cellulose hygroscopic aerogel (CHA) is proposed via unidirectional freeze casting of crosslinked cellulose nanofiber/AlO suspension and assembly of LiCl in 3D network of aerogel, featuring daytime radiative cooling integrated with hygroscopic-evaporation cooling functionality.

Sirt2 ablation exacerbates Sod1 knockout-induced progeroid phenotype in mice.

The free radical theory of aging suggests that oxidative stress from free radicals contributes to aging. While free radicals cause DNA damage and cellular dysfunction, they also regulate essential signaling pathways. This duality complicates direct testing of the theory in mice, as demonstrated by the minor lifespan impact of Sod1 knockout.

Cortical activation changes in supratentorial stroke patients during posture-cognition dual task.

Objective: To explore the effects of postural control and cognition interference on cortical activation during balance tasks in stroke patients.

Methods: fNIRS was used to measure cortical activation in the SMC, PMC, and PFC in 30 subjects with supratentorial stroke while performing a postural single task (PST), cognitive single task (CST), and postural-cognitive dual task (DT). Differences in activation and correlations with patient balance or cognitive performance were analyzed.