This study presents a novel ultra-high temperature composite with superior ablation resistances up to 3000 °C for 900 s, utilizing a tailored ultra-high melting point HfC_0.76N_0.24 matrix reinforced with short carbon fibers. The ablation-resistant capability of this composite is over 14 times greater than that of HfC at 3000 °C. The mechanistic details of complex oxidation processes are elucidated in terms of chemical bonding and clusters evolutions, along with their relationship to cooperative oxygen atoms.

Various types of intergenerational support was differentially associated with older adults’ satisfaction, with significant disparities between living in a rural or urban area.

The electromagnetic responses of metamaterial microstructural units are typically described using classical polarization theory models from dielectric physics, such as the Lorentz and Drude models. However, there has been a notable absence of the Debye model, which holds significant importance in dielectric physics. Chinese scientists have now successfully uncovered a novel broadband electromagnetic response mechanism in metamaterial microstructures based on polarization theory - Debye relaxation.

A recent review paper in Engineering presents a new safety concept for next-generation aviation. As air traffic complexity rises and future civil aviation systems become more complex, this system-of-systems (SoS) safety concept aims to address new risks. It draws inspiration from the human immune system and outlines a three-phase development plan for aviation safety, potentially revolutionizing how we approach aviation safety management.

A new study in Engineering offers a carbon-coupled network charge-guided bi-level interactive optimization method. It focuses on optimal peer-to-peer (P2P) coupled electricity and carbon trading among prosumers in distribution networks. The method aims to address the challenges from distributed renewable energy and has been proven effective in a case study, bringing potential benefits to network operation and the energy transition.

In the ever-evolving landscape of the platform economy, logistics service strategies in platform supply chains (PSCs) are crucial for efficient operations. A new study published in Engineering delves into self-built logistics (SBL), third-party logistics (3PL), and logistics service sharing (LSS) in PSCs. It uncovers key research topics, influencing factors, and offers insights into future research directions, providing valuable guidance for both academic research and industry decision-making.

A new study in Engineering explores the material removal mechanisms in ultra-high-speed machining (UHSM). Facing challenges in machining high-performance materials, UHSM shows potential, but its underlying mechanisms are unclear. The research reviews material ductility - brittleness evaluation criteria, summarizes typical removal mechanisms, and delves into UHSM-specific mechanisms like embrittlement and thermal effects. It also standardizes the UHSM definition, offering insights that could aid the technology's industrial application.

A new study in Engineering details the development of a wearable stethoscope with a Lung–Sound–Monitoring–Patch (LSMP). It can monitor lung sounds in real-time, detect wheezing automatically using an AI algorithm, and has shown promising results in different patient groups, offering a new way for respiratory disease monitoring.