Hematopoietic stem cells can transform into any type of blood cell. However, this ability declines as we age. Recent research at Tohoku University uses AI to guide their deep dive into understanding which genes cause aging in stem cells. 

We study the ground state of the spin-1/2 XXZ antiferromagnet on the triangular lattice in the easy-axis regime using density-matrix renormalization group with spiral boundary conditions. The ordered state remains a nontrivial three-sublattice Y-like structure over a wide anisotropy range. Extrapolation shows incomplete sublattice polarization even in the Ising limit. Energy comparisons demonstrate that the Y state is favored over the up-down-down state, stabilized by quantum fluctuations from the degenerate Ising manifold.

A team of researchers found a naked photo-bombing comet in an image from publicly available archival data from the Subaru Telescope. The Subaru Telescope has produced a vast collection of publicly available images covering large areas of the sky. Although these observations were originally designed for other scientific goals, the images can also contain unexpected Solar System objects, making the archive a valuable resource for new discoveries. By analyzing how sunlight is reflected from the surface of the nucleus, the team was able to determine important similarities and differences between the comet and asteroids.

When one person helps, or refuses to help, another in public, this may change not only the provider’s reputation but also the recipient’s. A theoretical study led by Kobe University provides the simplest explanation for how cooperation in large communities becomes stable and provides insights into phenomena like the bystander effect.

A programmable microfluidic device developed at Institute of Science Tokyo, Japan, combines deterministic lateral displacement, a microfluidic technique that is used to separate particles according to their size, with temperature-responsive polymer micropillars to dynamically change the separation conditions along a single channel. Using this device, the researchers successfully separated multiple particle populations. Additionally, they efficiently isolated viable cancer cells, white blood cells, and red blood cells from diluted whole blood.

A simple ball-milling process dramatically enhanced the antiviral activity of manganese-based oxides, as reported by researchers from Science Tokyo. The team treated four manganese-containing materials with ball milling in ethanol, which altered their surface chemistry and greatly improved their ability to inactivate an enveloped virus similar to SARS-CoV-2. The findings reveal a promising strategy for designing low-cost, high-performance antiviral materials for coatings and other self-disinfecting surfaces.

Laparoscopic gastrectomy is a well-established but technically demanding treatment against gastric cancer. Robotic gastrectomy, developed to overcome these limitations, has gained popularity in Japan since national health insurance coverage began in 2018. This study comparing matched patient pairs treated between 2023–2024 found that robotic gastrectomy reduced blood loss, conversions to open surgery, and hospital stays. Robotic distal gastrectomy also lowered complications and infections, supporting adoption to improve outcomes with minimally invasive surgery in Japan.

In the animal kingdom, energy conservation is essential for survival. That’s why our brains have evolved to be extremely energy and resource efficient at storing and processing information. Since the 1980s, computational scientists have tried to mimic brain structure and function, but have not yet succeeded in creating functional, low-memory solutions that work in real-world scenarios. Published in Neuromorphic Computing & Engineering, a new fly brain-inspired algorithm developed by researchers at the Okinawa Institute of Science and Technology (OIST) demonstrates promise for achieving practical applications under realistic constraints. 

A research team at Kumamoto University has developed a new blood-based approach that could help detect breast cancer recurrence by looking beyond conventional genetic mutations and examining how DNA is packaged inside cells.