66 Result(s)
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Article
Dong-xing **e
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Open AccessA N–CoSe/CoSe2–C@Cu hierarchical architecture as a current collector-integrated anode for potassium-ion batteries
The highly reversible insertion/extraction of large-radius K+ into electrode materials remains a tough goal, especially for conversion-type materials. Herein, we design a current collector-integrated electrode (N...
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A compact microfluidic laser-induced fluorescence immunoassay system using avalanche photodiode for rapid detection of alpha-fetoprotein
Alpha-fetoprotein (AFP), commonly employed for early diagnosis of liver cancer, serves as a biomarker for cancer screening and diagnosis. Combining the high sensitivity and specificity of fluorescence immunoas...
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Limit cycle oscillation and dynamical scenarios in piecewise-smooth nonlinear systems with two-sided constraints
Piecewise-smooth models are widely explored to investigate occasional contact or impact systems, such as gear systems in mechanical engineering and folding wings in aircraft structures. However, the complicate...
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Monotonic mechanical behaviour of compacted completely decomposed granite with various inclusion levels of incineration bottom ash
**年来, 不断增加的生活垃圾产生了大量的焚烧残渣(IBA). 同时, 考虑到土建材料的巨大用量需求和有限的自然资源, 充分利用固废材料变得越来越重要. 本研究通过静三轴试验, 研究了在不同的IBA体积含量和不同的压实全分化花岗岩(CDG)压实度下, IBA对CDG试样静力学特性的影响. 结果表明, 随着IBA体积含量的增加, 最大偏应力或抗剪**度逐渐增大, 呈双线性增加趋势. 当IBA的体积含量超过某一特征值时, ...
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Open AccessRashba-splitting-induced topological flat band detected by anomalous resistance oscillations beyond the quantum limit in ZrTe5
Topological flat bands — where the kinetic energy of electrons is quenched — provide a platform for investigating the topological properties of correlated systems. Here, we report the observation of a topologi...
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Somatic BrafV600E mutation in the cerebral endothelium induces brain arteriovenous malformations
Current treatments of brain arteriovenous malformation (BAVM) are associated with considerable risks and at times incomplete efficacy. Therefore, a clinically consistent animal model of BAVM is urgently needed...
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An Impact-Driven Enhanced Tuning Fork for Low-Frequency Ambient Vibration Energy Harvesting: Modeling, Simulation, and Experiment
A piezoelectric vibration energy harvester (PVEH), as a self-power device that can convert ambient vibration energy into electric energy, has extensive application prospects in power supply for microsensors us...
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Biogeochemical cycle and isotope fractionation of copper in plant–soil systems: a review
Copper (Cu) is a bio-essential element and a potentially toxic pollutant in the plant–soil systems. Analysis of stable Cu isotopes can be a powerful tool for tracing the biogeochemical cycling of Cu in plant–s...
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Open AccessTranscriptomics, proteomics, and metabolomics interventions prompt crop improvement against metal(loid) toxicity
The escalating challenges posed by metal(loid) toxicity in agricultural ecosystems, exacerbated by rapid climate change and anthropogenic pressures, demand urgent attention. Soil contamination is a critical is...
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The serum NT-proBNP is associated with all-cause mortality in geriatric hip fracture: a cohort of 1354 patients
Geriatric hip fracture patients often have increased N-terminal prohormone of brain natriuretic peptide (NT-proBNP) levels. This study found a curved association between preoperative NT-proBNP level and all-ca...
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Open AccessA CNN-LSTM-att hybrid model for classification and evaluation of growth status under drought and heat stress in chinese fir (Cunninghamia lanceolata)
Cunninghamia lanceolata (Chinese fir), is one of the most important timber trees in China. With the global warming, to develop new resistant varieties to drought or heat stress has become an essential task for br...
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KOtBu-catalysed α-homoallylic alkylation of acyclic amides with 1-aryl-1,3-dienes
Herein, we report a KOtBu-catalysed α-homoallylic alkylation of acyclic amides with 1-aryl-1,3-dienes. With this transition metal-free and atom-economic protocol, a series of α-homoallylic alkylated acyclic amide...
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Open AccessBiochar-bacteria partnership based on microbially induced calcite precipitation improves Cd immobilization and soil function
Microbially induced calcite precipitation (MICP) technique utilizes ureolytic bacteria to decompose urea and generate carbonate ions for metal combination. MICP can remediate heavy metal (e.g., Cd) contaminate...
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Effect of Mechanical Alloying and Sintering Behavior on the Microstructure and Properties of NbMoTaWRe Refractory High Entropy Alloy
An equiatomic refractory high-entropy alloy (RHEA) NbMoTaWRe is prepared by mechanical alloying (MA) and spark plasma sintering (SPS). The effects of mechanical alloying and sintering behaviors on the microstr...
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Composition Evolution of Mo–Si–O Films Under Heat Treatment
Molybdenum disilicide (MoSi2) films were synthesized by heat treatment of a Si/Mo/Si and Mo/Si sample systems at different temperatures in air. The onset temperature of MoSi2 formation started from 350 ℃ and cont...
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Assessment of DDT and its Metabolites Bioaccessibility in Historically Contaminated Soils Using Unfed and Fed in Vitro Methods
Bioaccessibility of hydrophobic organic contaminants (HOCs) from unintentional ingestion of soil is increasingly assessed with in vitro gastrointestinal models incorporating a sorption sink. In this study, the...
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Numerical analysis on mixed lubrication performance of journal-thrust coupled microgroove bearings with different bottom shapes
The purpose of the present study is to establish a mixed lubrication model for the journal-thrust coupled microgroove bearings (also referred as coupled bearings) used for the ship shaftless rim-driven thruste...
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Analysis of studies on environmental measurements using diffusive gradients in thin-films (DGT) from 1994 to 2020
It has been nearly 30 years since the introduction of the technique of diffusive gradients in thin-films (DGT), which provides information on solute concentrations and dynamics in waters, sediments, and soils....
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Synthesis and Antibacterial Activity of Selenium-functionalized Poly(ε-caprolactone)
A selenium-functionalized ε-caprolactone was synthesized by introducing a phenyl selenide group at the 7-position. A polymer was obtained through the ring-opening polymerization of this monomer in a base/thiourea...
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Predictive value of monocyte to HDL cholesterol ratio for stroke-associated pneumonia in patients with acute ischemic stroke
Prior studies had reported monocyte to high-density lipoprotein cholesterol ratio (MHR) as a new inflammation marker and stroke-associated pneumonia (SAP) is common after stroke. We investigated the predictive...
