Thin-walled parts are vital in aerospace and high-performance manufacturing, but their weak stiffness makes them prone to damaging vibrations during milling.

A new review highlights the latest strategies for suppressing chatter vibrations, including passive, active, and semi-active techniques. It brings together progress from materials science, mechanical engineering, control systems, and digital manufacturing, while also outlining what is still needed to achieve stable, efficient, and high-quality machining in real industrial settings.

As global temperatures climb, a critical but often-overlooked component of our ecosystems is stepping into the spotlight: dissolved organic matter, or DOM. Found everywhere from river water to forest soils, DOM acts as a powerful mover of carbon, nutrients, and pollutants. A new review led by scientists from Kunming University of Science & Technology and international partners finds DOM to be both a buffer and a potential accelerator of climate change, playing a surprisingly complex role in the planet’s environmental balance.

Large-scale livestock farming is accelerating the spread of antibiotic resistance and heavy metal contamination in agricultural soils at a pace and scale that poses new risks to global food safety and public health, new research reveals. Scientists have uncovered how even “low-risk” organic fertilizers like dried poultry manure can inadvertently drive a dramatic surge in dangerous antibiotic resistance genes, once released into vegetable plots used for food crops.

A new study published in Nitrogen Cycling presents the most comprehensive assessment to date of how China can reduce nationwide nitrogen pollution while continuing to meet the rising food demands of its population. The research analyzes nearly six decades of data and concludes that smarter nitrogen management could reduce fertilizer use by more than one third, significantly improving air and water quality without compromising crop yields.

The China National Space Administration plans to launch the asteroid sample-return mission TianWen-2 with the target being the near-Earth asteroid 2016 HO3. The TianWen-2 spacecraft mainly focuses on surface sampling on the near-Earth asteroid 2016 HO3. the whole TianWen-2 spacecraft will be controlled to achieve touchdown and sampling rather than releasing a small lander or ejecting a projectile. Small celestial bodies usually have an extremely low surface gravity and are covered with granular material a centimeter in size or smaller in the form of regolith. The dispersion, friction, and nonlinear dissipation of inelastic collision between particles make a regolith surface behave like a solid or a fluid at the macroscopic level, exhibiting phenomena such as deformation, flow, and ejection. Thus, sampling on a low-gravity regolith-covered surface with unknown physical properties is particularly challenging and risky. In order to successfully implement an in situ exploration, it is of great significance to analyze the influence of regolith soil on the sampling process of the spacecraft on the surface of the asteroid and comprehensively understand and evaluate spacecraft dynamics and control behavior during sampling.

 

Build a comprehensive medical data ecosystem framework that spans the entire data lifecycle and offers a new perspective for advancing practice in the field.

Provide practical tools for multi-stakeholders by organizing applicable technologies, referenced international standards, and representative deliverables to accelerate implementation.

Identify the core tasks across three key domains—technological innovation, institutional reform, and ethical governance—to maximize the potential of medical data.

Sustainable city management recognises the importance of not only the busy above-ground urban systems but also the invisible underground infrastructure, utilities, and hidden heritage and their stories. The Hong Kong Polytechnic University (PolyU) is at the fore-front of geospatial and near-surface geophysical technologies, advancing land surveying research that supports cultural preservation and the sustainable development urban environment.

Francisella tularensis is a highly infectious bacterium, a Tier 1-select agent on the US Federal Select Agent Program, and the causative agent of tularemia, a potentially fatal zoonotic disease.

Bud dormancy allows perennial plants to survive winter, but insufficient winter chill under warming climates disrupts this natural cycle and reduces flowering quality. 

The development of synthetic embryo models using early stem cells has emerged as a powerful platform for studying mammalian development in vitro. However, the generation of high-quality post-implantation embryo models in mice has typically relied on embryonic stem cells (ESCs) engineered to transiently express master regulators of extraembryonic lineages. This strategy diverges from the natural in vivo process of extraembryonic lineage specification.