Risultati della ricerca - Jun Zhou

The assembly optimization design of satellite components is a crucial element in the overall design of satellites. In this paper, a novel three-dimensional assembly optimization design problem (3D-AODP) for multi-module micro–nano satellite components is proposed according to the engineering require...

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This paper proposes a weak Galerkin (WG) finite element method for solving a multi-dimensional evolution equation with a weakly singular kernel. The temporal discretization employs the backward Euler scheme, while the fractional integral term is approximated via a piecewise constant function method....

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In order to study the effect of AlCoCrFeNi high entropy alloy (HEA) on the morphology, microhardness and wear resistance of copper - based composite coatings, the AlCoCrFeNi / Cu composite coatings were prepared on the surface of 40Cr steel by flame spraying. The microstructure and wear resistance o...

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Quantifying the dynamics of above and belowground biomass carbon (AGBC and BGBC) is essential for optimizing carbon sink management. However, the environmental thresholds that govern these dynamics under climate change remain poorly understood in China. In this study, we identified key thresholds by...

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Rapid population and economic growth intensify carbon emissions and degrade land carbon sinks. While existing research predominantly focuses on urban energy emissions, systematic studies addressing comprehensive land-carbon interactions in China’s key urban agglomerations remain lacking. This resear...

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Sepsis is defined as a condition of immune dysregulation in response to an infection, and sepsis-associated encephalopathy (SAE) is often the initial symptom that manifests in patients with sepsis. This condition is characterized by its high mortality rates and the potential to cause significant dis...

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Cadmium (Cd) mobilization in paddy soils during redox fluctuations poses significant risks to rice safety. This study investigated the efficacy of nano-calcium carbonate (NCC), nano-hydroxyapatite (NHAP), and their composite (C+P) in immobilizing Cd under simulated flooding–drainage cycles. Soil tre...

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In order to reveal the influence of working gas on DLC coating and provide reference for the application of DLC at high temperature, different hydrogen-containing diamond-like carbon films(a-C:H)were prepared on 304 stainless steel substrate by plasma-enhanced chemical vapor deposition(PE-CVD)with d...

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Speech recognition in noisy environments has long posed a challenge. Air conduction microphone (ACM), the devices typically used, are susceptible to environmental noise. In this work, a customized bone conduction microphone (BCM) system based on a piezoelectric micromachined ultrasonic transducer is...

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The effect of Aphelenchoides besseyi on 27 cultivars of rice (23 japonica and 4 indica) was assessed in the field for two seasons during 2010 and 2011. The vigorous pathogenic nematodes culturing on Botrytis cinerea were used for this experiment. Inoculation was carried out at the tilling stage; the...

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Grasping the perspectives of consumers is a fundamental focus for those managing events and festivals. This study investigated the impacts of aspects of awareness and event experience, namely perceived value, service quality and event image on satisfaction, along with revisit intentions to major ev...

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The inadequate computational methodologies for fused filament fabrication (FFF) 3D printing components, particularly in addressing interlayer characteristics, have hindered their widespread engineering applications. This paper presents a novel computational framework for in-situ effect determination...

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ObjectiveThis study aimed to assess the clinical characteristics and perinatal outcomes of intraumbilical vascular thrombosis, with the objective of improving diagnostic accuracy and developing better management strategies to enhance perinatal outcomes.MethodsA retrospective analysis was conducted o...

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The advancement of mobile robot technology has made path planning a necessary condition for autonomous navigation, but traditional algorithms have issues with efficiency and reliability in dynamic and unstructured environments. This study proposes a Dynamic Hybrid A* (DHA*)–Adaptive Dynamic Window A...

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To address the challenges of data fragmentation, inconsistent standards, and weak interactivity in oil and gas field surface engineering, this study proposes an intelligent delivery system integrated with three-dimensional dynamic modeling. Utilizing a layered collaborative framework, the system com...

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Accurate classification of jujube varieties is essential for ensuring their quality and medicinal value. Traditional methods, relying on manual detection, are inefficient and fail to meet the demands of modern production and quality control. This study integrates hyperspectral imaging with intellige...

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Esophageal squamous cell carcinoma (ESCC) is among the most common malignant tumors. Robot-assisted surgery using the cervical and thoracoabdominal incisions is a viable treatment option for ESCC. This case report presents a rare instance of ESCC complicated by hepato-gastric schwannoma, offering cl...

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<i>Lacticaseibacillus rhamnosus</i> (<i>L. rhamnosus</i>) is a safe probiotic with no side effects, providing benefits such as gut microbiota regulation and immune enhancement, making it highly valuable with strong potential. However, strains from different sources have uniqu...

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To elucidate the molecular mechanisms that underlie jujube (<i>Ziziphus jujuba</i>) flavor synthesis, we integrated transcriptomic and metabolomic analyses on the ‘Lingwuchangzao’ cultivar across seven developmental stages. Our multi-omics approach detected 750 metabolites, categorized i...

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The design of channel geometry plays a critical role in the performance of proton exchange membrane electrolytic cells (PEMECs), particularly in addressing challenges such as bubble accumulation and pressure drop, which hinder efficient hydrogen production. This study introduces an innovative uneven...

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