Chinese Academy of Sciences

Genetic links between IIIE iron meteorites and the core of the HED parent asteroid

Rocky planets formed through the differentiation of planetesimals into metal‑rich cores and silicate mantles, yet direct evidence linking these complementary reservoirs remains scarce. Here we show that IIIE irons and howardite-eucrite-diogenite (HED) meteorites are genetically l...

A micro-CT-based “orientation–clustering–stiffness–damage” coupling framework for carbon-fiber/epoxy: From single-fiber scale to component-level failure prediction

A four-order “orientation-clustering-stiffness-damage” coupling framework is proposed for 28–30 vol% carbon-fiber/epoxy short-fiber composites (7 μm nominal fiber diameter, 3–5 mm chopped length), enabling accurate cross-scale failure prediction spanning from 60 μm single-fiber i...

Synthesis, Structure, and Photothermal Conversion of a Bowl‐Shaped Nanographene Containing Fused 5‐/7‐Ring Pairs

ABSTRACT Incorporation of non‐hexagonal topologies into bowl‐shaped nanographenes offers opportunities for tailoring their electronic properties and supramolecular behavior, however synthesis of such curved systems remains challenging. Herein, we report the facile synthesis of a...

Halide Solid‐State Electrolytes for all‐Solid‐State Lithium Batteries: Structure, Transport, Interface Relationships and Design Principles

ABSTRACT Halide solid‐state electrolytes (HSEs) have recently emerged as a highly promising class of ionic conductors for all‐solid‐state lithium batteries, owing to their high ionic conductivity, favorable electrochemical stability, and superior compatibility with high‐voltage c...

Spatial Heterogeneity of Global Organic Matter Accumulation During the PETM

Abstract The Paleocene–Eocene Thermal Maximum (PETM) was an abrupt global warming event triggered by a massive release of isotopically light carbon. Rapid recovery from the PETM has been attributed to enhanced burial of organic matter (OM). However, the mechanisms and spatial dis...

Synthesis, Structure, and Photothermal Conversion of a Bowl‐Shaped Nanographene Containing Fused 5‐/7‐Ring Pairs

ABSTRACT Incorporation of non‐hexagonal topologies into bowl‐shaped nanographenes offers opportunities for tailoring their electronic properties and supramolecular behavior, however synthesis of such curved systems remains challenging. Herein, we report the facile synthesis of a...

Unlocking raw-corncob consolidated bioprocessing for malic acid production by DyP-enabled lignin deconstruction in Myceliophthora thermophila

l -Malic acid is an important C4 platform chemical, but its direct production from raw lignocellulosic biomass by consolidated bioprocessing (CBP) remains constrained by biomass recalcitrance. Here, we developed an integrated lignin-side and sugar-side engineering strategy in the...

Drivers of flash flood frequency and intensity in the United States: a quantitative analysis of hydrometeorological interactions

Abstract. Inconsistent changes in precipitation and flooding have spurred investigations into the underlying mechanisms, yet the quantitative understanding of interactions between precipitation, temperature, and land cover in streamflow dynamics remains limited. We investigate st...

Structural design and experimental validation of a titanium alloy hemispherical shell for ultra-deep-sea applications

This paper presents a comprehensive investigation into the design, numerical simulation, and experimental validation of an ultra-high-strength titanium alloy hemispherical shell intended for pressure-resistant applications at depth of 11,000 meters. Employing the strength and sta...

Protocol to generate human T cell progenitors that repopulate the thymus

Human pluripotent stem cells (hPSCs) provide a powerful platform for generating T cell progenitors and investigating hematopoietic stem cell (HSC)-independent T cell development. Here, we present a protocol for the directed differentiation of hPSCs to generate early progenitors o...

Structural insights into a substrate translocation pathway revealed by the RND efflux pump complex MexJK from Pseudomonas aeruginosa

Resistance–nodulation–cell division (RND) efflux pumps are the major cause of multidrug resistance in Pseudomonas aeruginosa . The inner membrane protein MexK from P. aeruginosa is a narrow-spectrum RND transporter. It assembles with membrane fusion protein MexJ and outer membran...

First mitogenome-based phylogenetic analysis and divergence time estimation of deep-sea elasipodid sea cucumbers (Holothuroidea: Elasipodida)

Elasipodida is a major deep-sea holothuroid order, and distributed across depths ranging from 350 m to 7,000 m. Its high species diversity and extensive bathymetric range make it a key model system for investigating the evolutionary processes and adaptive radiation of deep-sea fa...

Recent Advances in Zeolite-Based Catalysts for Hydroisomerization of Long-Chain Alkanes

Long-chain n-alkane hydroisomerization is a key catalytic route for upgrading wax-rich, bio-derived, and synthetic hydrocarbon feedstocks into diesel fuels, sustainable aviation fuels, and lubricant base oils with improved low-temperature properties. However, selective hydroisome...

A Configurable and Highly Efficient NTT/INTT/PWM Unit for CRYSTALS-Kyber and CRYSTALS-Dilithium

CRYSTALS-Kyber and CRYSTALS-Dilithium are representative lattice-based post-quantum cryptographic schemes, where number theoretic transform (NTT), inverse NTT (INTT), and point-wise multiplication (PWM) dominate polynomial arithmetic. Existing hardware accelerators are typically...

Evaluation of the Impact of Aged Biomass Burning Emissions on the Global Ozone From the Surface to the Lower Stratosphere

Abstract Biomass burning (BB) is a major global sources of ozone (O 3 ) precursors, including nitrogen oxides (NO x ), carbon monoxide (CO), and volatile organic compounds (VOCs). Here, we combine Community Earth System Model 1 with airborne measurements from the NASA Atmospheric...

Crystal Void Fraction‐Engineered Fe‐S Catalysts for Self‐Sustaining Li‐CO 2 Mars Batteries

ABSTRACT Efficient energy storage is vital for self‐sustaining Martian exploration. Li‐CO 2 batteries are promising by utilizing the Martian atmosphere (∼95% CO 2 ) as active materials. Fe‐S minerals, abundant on Mars, offer a viable candidate for cathode catalysts, yet their str...

Coordinative chain transfer homopolymerization and copolymerization of bio‐sourced β ‐myrcene and butadiene promoted by iminopyridine iron complexes

Abstract A family of iron complexes bearing iminopyridine (ImPy) ligands with systematic variations on the N ‐aryl and pyridine moieties was evaluated as pre‐catalysts for the coordinative polymerization of β‐myrcene and butadiene. Upon activation with Al i Bu 3 and trityl borate...

Evolution of water pattern in Chagan Lake Basin from 2017 to 2025 using PlanetScope images and a newly developed MS-FCN8s algorithm

As a typical lake group in Northeast China, the Chagan Lake Basin's water dynamics are crucial for regional water security and ecological protection. High-resolution images have limited spectral information, water indices perform poorly in complex backgrounds, and deep learning m...

Beyond Morphological Conservatism: Integrative Taxonomy Unveils Remarkable Cryptic Diversity in the Tachysurus virgatus (Oshima 1926) Group (Siluriformes: Bagridae) Endemic to the Northern Margin of East Asian Tropics

The northern margin of the East Asian tropics harbors exceptional endemism, yet its freshwater fish fauna remains poorly characterized. Tachysurus virgatus, long considered a single widespread species in this region, exemplifies this taxonomic gap. Through integrative taxonomic a...

Manganese Ion‐Based NanoPlatforms for Tumor Theranostics

ABSTRACT Manganese‐ion‐based nanoparticles have emerged as highly versatile platforms that seamlessly integrate diagnostic and therapeutic functions, enabling precision cancer theranostics. In this review, we discuss manganese‐based nanomaterials through a design‐oriented framewo...