A new study has provided the first global 'bottom-up' terrestrial carbon budget, estimating a net sink of -2.2 ± 0.6 Pg C y-1 between 2000 and 2009. The study reveals that a significant portion of carbon fixed in terrestrial ecosystems is lost through fires, emissions, and export to rivers, rather than being retained in the soil.
Research finds consistent summer precipitation patterns between the Mongolian Plateau and North China, driven by the Eurasian mid-latitude teleconnection wave train. This phenomenon enhances moisture transport and strengthens regional climate features.
A recent research development introduces a pioneering theory of three-pattern decomposition of global atmospheric circulation. This new system improves the accuracy of climate prediction by unifying atmospheric motions in different latitudes. The theory has been praised as an original and innovative achievement with international level.
Researchers used GOCI to study high-resolution spatial distribution and tidal variation of suspended sediment over the Yangtze Bank, revealing a tongue-shaped structure and importance of topography in tidal-induced mixing. The study enhances understanding of short-term changes to TSS in Yellow and East China Seas.
The study enhances air quality numerical models by incorporating observation information and model background fields to improve prediction accuracy, particularly for pollutants with long lifespans. It shows significant benefits for PM2.5, PM10, and CO forecasts lasting more than 48 hours.
Researchers developed a COF-LZU1 coating to redistribute Li-ions, improving battery performance. The coating's nanochannels hinder anion migration, increasing the Li-ion transference number and transforming mossy or dendritic Li into smooth deposition.
This study reveals that El Niño-Southern Oscillation (ENSO)-modulated vegetation fires in Southeast Asia dominate the springtime trans-Pacific transport of ozone across the entire North Pacific Ocean. The enhanced ozone plumes stretch over 15,000 km from the South China Sea to Southwestern North America and the Gulf of Mexico.
Researchers used femtosecond laser direct write technology to simulate curved space-time near a black hole. They observed accelerated single-photon wave packets and fermion pairs escaping the black hole, mimicking Hawking radiation. This experiment demonstrates the potential for quantum simulation in studying general relativity.
Researchers develop sensitive optical fiber sensors using D-A based aggregation-induced emission (AIE) molecular rotors and one-dimensional polymer fibers. The sensors respond to ambient humidity rapidly and reversibly with observable chromatic fluorescence change.
Researchers have successfully fabricated various sensor and energy systems inspired by butterfly wings, including thermal, medical, and vapor sensors, anti-counterfeit security devices, and photovoltaic systems. These systems demonstrate competitive efficiency and performance to similar systems inspired by other natural species.
Researchers found that Cyclocarya paliurus polysaccharide modulates the gut microbiota and improves metabolic pathways, leading to a reduction in serum glucose levels and alleviating type 2 diabetes symptoms. The study provides new insights into the use of dietary polysaccharides for preventing or intervening in T2DM.
The study of Jurassic fossils from northeastern China provides evidence that ancient catkin-yew species existed during the Middle-Late Jurassic period. The fossils, which bear a striking resemblance to modern catkin-yews, demonstrate morphological stasis and are among the most completely known fossil Taxaceae.
Researchers developed a new strategy to boost photocatalytic CO2 reduction by improving photosensitization ability of Ru-based PSs. The study found that adjusting excited state population and lifetime can significantly enhance sensitizing ability, with Ru-3 showing over 17 times higher sensitizing ability than typical Ru-1.
The article emphasizes the importance of climate resilience in urban energy systems to address climate change and extreme events. Nik and colleagues provide an overview of current progress in adapting urban energy systems to climate change, highlighting limitations in existing approaches.
A common finding across three continents reveals that atmospheric turbulence enhances new particle formation (NPF), a key process for haze development. NPF growth rates are faster under stronger turbulence conditions, while instability parameters prolong event durations.
Chinese researchers successfully reversed single magnetic vortex circulation using an electric field, demonstrating a promising approach for future spintronic devices with higher storage density and lower power consumption. The study reveals a new magnetoelectric coupling mechanism for controlling nanoscale chiral spin textures.
A team of researchers discovered a new chimera state in brain networks, known as the spatial multi-scaled chimera state. This state is characterized by global triviality but local chimera states, depending on coupling strengths and time-delays. The study found that regions with higher symmetry take the role of relay nodes.
A study links iron levels in a Greenland ice core to Asian dust patterns over the past 110,000 years. The findings suggest that changes in solar radiation drove hemispheric-scale dust input, with more complex Fe fertilization effects during the Holocene.
A recent study evaluates proxy-based reconstructions and model simulations for past temperature changes, finding that uncertainties increase over time. The results show that climate modeling results are less reliable than proxy-based reconstructions, especially during Medieval times.
High accuracy surface modeling (HASM) integrates extrinsic and intrinsic properties, producing accurate results in various applications. The fundamental theorem for earth surface system modeling (FTESM) combines surface theory, system theory, and optimal control theory.
Researchers have discovered that LHCII trimer acts as a molecular machine responding to environmental conditions like temperature and acidity. This mechanism enables the protein to switch between efficient light collection and photoprotection, promoting energy dissipation when necessary.
A study published in National Science Review found that COVID-19 lockdowns in China led to a sharp reduction in transportation emissions, but this was offset by an increase in secondary particle formation due to enhanced atmospheric oxidizing capacity. The study suggests that coordinated control of various primary emissions is necessar...
Researchers have found a new material with extremely low thermal conductivity, attributed to the weakening of chemical bonds in its one-dimensional chain structure. This discovery opens up potential applications for thermoelectric materials and thermal barrier coatings.
Researchers applied a new Gaussian mathematical model to high-precision laser 40Ar/39Ar dating data from the Tengchong area, resolving 3 volcanic eruptive stages: Pliocene (3.78 Ma), early Middle Pleistocene (0.63 Ma) and late Middle Pleistocene (0.139 Ma). The method reduces uncertainty and defines stages with high precision.
Researchers synthesized Nb2O5 nanotubes on carbon cloth via a simple hydrothermal process, achieving high reversible capacity of 175 mAh/g and energy density of 195 Wh/kg. The material shows good conductivity, reduced volume expansion, and flexible operation conditions.
Researchers summarize the processes involved in forming porphyry copper deposits, including dehydration, magma ascent, assimilation, storage, and homogenization. The study highlights ongoing challenges, such as tectonic control on geochemical characteristics and metal pre-enrichment mechanisms.
Researchers simulate Holocene effective moisture change in East and Central Asia using a virtual lake system. The study reveals that changes in precipitation and evaporation patterns drove climate change in the region, with decreased effective moisture in the Tibetan Plateau primarily attributed to decreased summer solar radiation.
The regional coupled C-N-H2O cycle involves regional transport and transformation processes, biogeochemical C-N-H2O processes, and interactions between elements at the terrestrial-atmosphere and terrestrial-freshwater interfaces. Climate change impacts the cycle by driving nutrient cycling, primary productivity, and abiotic processes.
Researchers developed single-cell yolk-shell capsules with high biological activity and stability, addressing limitations in industrial reactors. The capsules exhibit size-dependent permeability and molecular recognition abilities, enabling enhanced cell survival and viability.
Researchers used co-clustering analysis to study the spatio-temporal differentiation of spring phenology in China. The results revealed three spatial patterns and five temporal patterns, with most areas in China exhibiting a stable state, while northern regions showed fluctuating trends.
Scientists used complex network theory to analyze nuclear reaction networks, identifying stable nuclides and patterns in thermonuclear reactions. The study revealed that certain reaction patterns fade away or change shape as the number of protons reaches a certain threshold.
A study by Chinese researchers suggests that fencing is necessary in severely overgrazed areas but short-term fencing options should be considered. The authors propose encouraging traditional free grazing practices and removing existing long-term fences to benefit wildlife.
Scientists at Peking University found that the contact characteristics of 1T'/2H-MoTe2 phase boundary depend on the tilt angles between metallic and semiconducting phases. The researchers discovered that a 0° tilted phase boundary has stronger atomic bonds and better contact performance.
Viral particles move along microtubules to form a nuclear vesicle, releasing HIV-1 into the nucleus. This phenomenon is similar to cell endocytosis and reveals new insights into HIV-1 nuclear entry.
The Solar Ring mission aims to study the Sun and its influence on the inner heliosphere using a novel six-spacecraft configuration. The mission will provide unprecedented capabilities, including determining the photospheric vector magnetic field with unambiguity and resolving solar wind structures at multiple scales.
Researchers analyzed long-term first bloom dates dataset using Bregman block average co-clustering algorithm with I-divergence, revealing spatio-temporal differentiation of spring phenology in China. The study identified three spatial patterns and five temporal categories, with most areas belonging to the stable state.
A new methodology for assessing the credibility of historical global land use/cover datasets has been proposed, addressing temporal and spatial changes. The approach evaluates accuracy, rationality, and likelihood assessments through five case studies, providing a framework for improving data quality.
Scientists create vertical spin valves using 2D van der Waals materials, eliminating the need for a spacer layer. The devices exhibit low resistance-area products and low operating current densities, making them suitable for future spintronics applications.
Researchers discovered an oxygen-excess phase in the mid-mantle that contains more oxygen than hematite. This new phase could have long-termly oxidized the shallow mantle and crust, influencing global habitability.
Researchers predict novel helium-methane compound He3CH4, stable under high pressure, with unique phase transitions upon heating. The compound's van der Waals interactions facilitate efficient heat transport, affecting a planet's interior and surface temperature.
Research finds that ferropericlase transforms into superoxide when exposed to water at deep lower mantle conditions. The discovery suggests the lower mantle is locally oxidized where water is present, contrary to previous theories.
A recent study has uncovered evidence of ancient cultivated rice in Central Asia, dating back to the Kushan period. The discovery sheds new light on the spread of rice agriculture and its role in early global trade.
A recent study explores the application of deep learning in ecological resource research, addressing challenges such as multi-source/multi-meta heterogeneity and high dimensional complexity. The study highlights the potential of deep learning in connecting computer science with classical theoretical sciences in ecology.
A new soil moisture product has been developed for mainland China, utilizing a dual-pass data assimilation system that auto-calibrates model parameters. The product provides gridded soil moisture data with a spatial resolution of 0.25° over China, showing consistent patterns with precipitation and evaporation.
Researchers found that divergent flowering times caused nearly complete reproductive isolation between two wild rice species. The change of flowering time of the new species O. nivara is an adaptation to shifted environments.
Researchers developed a new descriptor named orbital electrostatic energy (OEE) to describe electrostatic properties of ions and arene π systems. OEE strongly correlates with binding energies, especially for multiply-shaped ion-π complexes.
Researchers discovered molybdenum telluride (MoTe2) nanoflakes exhibit high activity and selectivity for H2O2 production in acidic media. The nanosheets show improved performance over state-of-the-art Pt-Hg and Pd-Hg alloys, with potential applications in decentralized H2O2 production.
Researchers developed an intent-defined optical network (IDON) with artificial intelligence-based automated operation and maintenance to address the challenges of manual configuration. IDON achieves intent-oriented configuration conversion, adaptive generation and optimization strategies, and closed-loop intent-guaranteed operations, d...
Scientists developed hollow structured photocatalysts with controllable spatial location of active metals, chemical compositions, and tunable shell thickness. AuPt@HMZS nanoreactors exhibited excellent catalytic activity in cinnamyl alcohol oxidation under visible light.
Researchers at Anhui University and Nanjing University successfully constructed 1D linear chains, 2D grid networks, and 3D superstructures from Ag29(SSR)12 nano-building blocks. The hierarchical self-assembly enables remarkable optical absorptions and gas storage properties in the assembled frameworks.