Fossil discovery of Guazia ovules reveals unique integumentary lobes for long-distance dispersal. The earliest recorded ovule without a cupule, Guazia's morphology challenges current understanding of seed plant evolution.
Researchers discovered new species and genera related to the genus Ctenopharyngodon, revealing that grass carp originated during the Oligocene in western China. The fossil record shows a transformation from carnivorous ancestors to herbivores as the environment changed.
Researchers found that a new approach using dual additives can optimize morphology for high-performance organic solar cells. The study shows a remarkable power-conversion efficiency of 17.74% with a high fill factor, demonstrating promising results.
Researchers create ultra-broadband sound absorber with an average absorption coefficient of 0.93, surpassing previous limitations. The metamaterial's design utilizes near-field non-locality to suppress excessive response and achieve efficient impedance matching.
The study found that all 86 tridomain homologues of NDP-heptose synthetases are conserved in Actinobacteria, with three types of gene clusters encoding different natural products. The kinase domains of four selected proteins were found to be dysfunctional.
Researchers found fatty acid compounds, GDGTs, and archaeol compounds in salt sediments of Qaidam Basin, a promising analog site for Mars exploration. The distribution of lipids provides important references for understanding Martian habitability.
Scientists have developed a method to synthesize nanocrystals in live cells through space-time coupled synthesis, enabling the creation of super biosystems. This approach has been successfully applied to various cell types, including yeast, bacteria, and mammalian cells.
Researchers introduce an electron linker engineering strategy to improve the performance of all-polymer solar cells. The new system shows remarkable efficiency, stability, and mechanical properties compared to traditional materials.
Researchers reviewed dual-atom catalysts' synthesis, characterization, and electrocatalytic performance, highlighting their advantages over single-atom catalysts. They suggest DACs may bridge the gap between heterogeneous and biocatalysis, worth exploring in the future.
Researchers focus on cathode materials in rechargeable aluminum batteries to improve electrochemical performance. Current studies classify cathode materials into four groups based on ion charge carriers and discuss their respective electrode structures, optimization strategies, and charge storage mechanisms.
Researchers developed a combined approach to amplify the large-scale biosynthetic gene cluster, resulting in a 9.59-fold increase in bleomycin production. The method uses a ZouA-dependent DNA amplification system and double-reporters-guided recombinant selection.
Researchers review strategies to enhance Cu-based catalysts' performance in CO2 reduction, including surface structure tuning and local environment regulation. The study aims to overcome current challenges and outline future opportunities for efficient CO2 conversion.
Airborne pollen concentrations in Betula microphylla-dominated wetland of Ebinur Lake, Xinjiang, are influenced by meteorological factors such as temperature, precipitation, wind speed, and direction. The study found that airborne pollen composition corresponds to local vegetation and reflects long-distance transported pollen taxa.
Researchers develop a multifunctional supramolecular catalysis protocol using open-cage solutions to achieve diverse cage-confined catalysis. The protocol enables selective mass transfer, C-H activation, and anionic intermediate stabilization, promoting acid/base-catalyzed cascade reactions.
Researchers at Shanghai Institute of Materia Medica have isolated and characterized seven novel dimeric sesquiterpenoids with potent antimalarial activities. The most potent compound, Shizukaol A, exhibits an EC50 value 1000-fold more active than artemisinin.
A new canine mutant model mimics human cerebrovascular disease by exhibiting severe arteriosclerosis, thrombosis, and stroke. The ApoE knockout dogs show extensive and severe arteriosclerosis plaques and arterial stenosis, consistent with human cerebral arteries and coronary arteries.
Researchers designed a sub-nanometer molecular rectifier utilizing destructive quantum interference and asymmetric supramolecular interaction, overcoming electronic functionality challenges. The device achieves rectification behavior at the sub-nanometer scale, enabling potential miniaturization of electronic devices.
Numerical study investigates dynamics of internal solitary waves (ISWs) in southern Andaman Sea, revealing their generation via oscillating semi-diurnal tidal flow. Sensitivity runs show semidiurnal tides generate stronger ISWs than diurnal tides, with mixed forcing having little effect
The BESIII experiment has made significant discoveries in the study of charmonium and charmoniumlike states, including the observation of conventional and exotic hadrons. The researchers have also uncovered evidence for the commonality among X(3872), Y(4260), and Zc(3900) states.
A recent study has identified the superior antitumor efficacy of LTr1 over commercialized compound DIM, revealing new insights into the metabolism of indole-3-carbinol. The research team discovered that LTr1 is formed through the Michael addition of 3-methyleneindolium to DIM in the upper gastrointestinal tract.
Researchers have discovered a rare quaternary compound FeO2H2He that can be stabilized at high pressures. The study reveals a novel superionic state of the compound, hosting liquid-like hydrogen in its sublattice, which promotes close coalescence of hydrogen and helium.
Researchers have developed a method to produce genome-edited sperm from a different species by transplanting spermatogonial stem cells, opening up new avenues for accelerating breeding processes in commercial fish and livestock.
Scientists summarize current state of land carbon data assimilation and outline mathematical principles for optimal fusion with models and observations. Emerging opportunities include fusing multisource observations into a coherent carbon data assimilation system.
Human activities have reduced the occurrence of persistent heavy Meiyu rainfall events in China, but greenhouse gas emissions would increase their probability. Anthropogenic aerosols, however, reduce atmospheric moisture and weaken the monsoon circulation, offsetting this effect.
A new study finds that vapor pressure deficit has a significant impact on the global terrestrial carbon cycle. Researchers led by Dr. Bin He and Dr. Wenping Yuan confirmed this finding using satellite remote sensing and modeling approaches.
Researchers developed a facile approach to preparing functionalized MOF catalysts with covalently anchored metal-N-heterocyclic carbenes. The catalysts exhibit high activity in Suzuki coupling reactions and hydrogen transfer reactions, and can be separated and recycled multiple times.
Researchers have developed a novel multi-enzyme platform that enables sequence-unconstrained traceless protein synthesis and modification, expanding the possibilities for life science research and pharmaceutical innovation. The PALME platform utilizes diverse enzymes to offer flexible ligation sites and peptide substrates.
A severe sandstorm in North China was triggered by a combination of factors, including persistently lower surface air temperatures and reduced winter precipitation. The resulting dry and loose land surface created a significant dust source that led to the storm.
Researchers have developed a single-layer composite hydrogel with improved mechanical and electrical properties, featuring high stretchability, self-healing capabilities, and ultrasensitive mechanical sensing. The SHARK material can be stretched up to 77 times its original length and completely self-heal in less than a minute.
The Toarcian Ocean Anoxic Event was found to have occurred in the eastern Tethys, displaying similar carbon-isotope excursion patterns to other regions. This suggests a global expression of the event, with climatic change controlling organic matter accumulation and sediment supply.
The study introduces a novel approach to attenuate the limitation of the energy gap law, achieving high-efficiency NIR emissions through intermolecular charge-transfer aggregates. The developed material exhibits widely-tunable emissions and high photoluminescence quantum yields.
Researchers have been exploring tribocatalysis as an alternative clean energy technology. The process converts mechanical energy into electrical energy through the triboelectric effect, with potential applications in material synthesis and energy conversion. Further research is needed to fully develop this promising field.
This work proposes a hybrid quantum-classical convolutional neural network that leverages the power of quantum computing to enhance machine learning. The quantum feature map allows for a much larger feature space exploration, potentially leading to higher learning accuracy.
Researchers found that short-form OPA1 serves as a molecular chaperone to protect substrate proteins from thermal and chemical aggregation in the mitochondrial intermembrane space. This new function of S-OPA1 may contribute to sustaining mitochondrial homeostasis.
A novel reassortant H10N3 avian influenza virus emerged in Eastern China, exhibiting high pathogenicity and respiratory droplet transmissibility to mammals. The virus was isolated from poultry and showed affinity for both avian-type and human-type receptors, posing a significant threat to public health.
Scientists successfully controlled photonic orbital angular momentum (OAM) in three-dimensional space and time domain, opening up new possibilities for studying light-matter interactions and developing innovative photonic devices.
Researchers identify a twist-angle dependent exciton in WS2/WSe2 heterobilayers, characterized by an intralayer exciton with transition dipole moment parallel to the atomic plane. The exciton's orientation and energy are found to be independent of the twist angle.
Scientists at Wuhan University have developed a novel method to synthesize 2D rare earth oxides (REOs) with specific facets. The technique uses a facet controlling assistor to control the growth mode and direction of crystals, leading to anisotropic growth of non-layered REOs materials.
Researchers developed a new method for activating carbon-nitrogen bonds using uranyl photoredox catalysis. This process enables the efficient synthesis of phenols from anilines, with gram-scale amplification and high efficiency demonstrated.
Researchers discovered a new candidate for the sister group of eukaryotes, named Njordarchaeota. The analysis suggests that this group is closely related to eukaryotes and may have played a key role in their origin.
Researchers identify a hydrogen utilization pathway for the electrocatalytic hydrogenation of phenol, improving its efficiency with PtRh/MCN bimetallic catalysts. The study shows that specific adsorption of phenol enhances intrinsic activity for producing adsorbed hydrogen from water electrolysis.
Scientists developed a cascade-responsive nanobomb that generates multiple severe ROS storms at the tumor site, effectively inhibiting tumor growth and preventing metastasis. The device uses a domino effect to activate systemic immune responses while minimizing external energy stimulation.
Researchers use synchrotron techniques to study battery cathode materials, revealing their structural and chemical evolution under real-world conditions. The study highlights the importance of realistic operating conditions and interdisciplinary collaboration in improving energy density and reducing production costs.
A new semi-heterogeneous photo-Cu-dual-catalytic system enables mild C–H arylation and multi-types cross-coupling reactions with good yields and site selectivity. This method produces high-value compounds, such as alkaloid natural products, in a single step.
The study reveals Jiuduansha Island's rapid growth due to reduced fluvial sediment discharge and the Deep-Water Channel Project. The island's elevation, location, and area underwent significant changes, with accelerated growth rates observed.
A new polymer semiconductor is developed using nonchlorinated solvents, resulting in improved solubility and alignment of the polymer film. This leads to high-performance ambipolar transistors with record mobilities, outperforming traditional methods.
Researchers define the Silurian-Devonian boundary in East Yunnan using geochemical indicators, resolving debates on the interval. The study provides a feasible method to calibrate minimum and maximum ages for coelacanth-rhipidistian and lungfish-tetrapod splits.
Researchers have proved the existence of universal adversarial examples that can deceive multiple quantum classifiers. The study also reveals the universality aspect of adversarial attacks for quantum machine learning systems, providing valuable insights for future applications.
Researchers developed a global impervious surface area dataset using over 3 million Landsat satellite images, revealing widespread urban sprawl and accelerated urbanization in Africa and Asia. The study provided a new global mapping method and longest time span for ISA data.
Researchers highlight the potential of disordered carbons as anode materials for sodium-ion batteries, but also identify remaining challenges. The authors propose five key research directions to advance the field and improve battery performance.