Sökresultat - Xu Liu

Mixed recycled coarse aggregate (MRA), derived from construction and demolition waste of masonry-concrete composite frame structures, primarily consists of recycled concrete aggregate (RCA) and recycled brick aggregate (RBA). Due to the high porosity of MRA, its application to precast concrete sandw...

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The current paper is devoted to the dynamical property of the stochastic Cox–Ingersoll–Ross (CIR) model with pure jump noise, which is an extension of the CIR model. Firstly, we characterize the existence and 2-moment of the CIR process with a pure jump process. Consequently, we provide sufficient c...

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This paper studied the general mechanism of spatial-frequency-shift (SFS) super-resolution imaging based on multiplex illumination modulation. The theory of SFS joint intensity was first proposed. Experiments on parallel slots with discrete spatial frequency (SF) distribution and V-shape slots with...

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The sludge produced by the Fenton process contains mixed-valence iron particulates (hereafter called Fenton wastes). Using a solvothermal method, we fabricated a new heterogeneous photo-Fenton catalyst using Fenton wastes and metal–organic frameworks (MOFs). Nanoporous metal carboxylate (MIL-88) MOF...

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This paper addresses the real-time trajectory generation problem for hypersonic glide vehicles (HGVs) during atmospheric entry, subject to complex constraints including aerothermal limits, actuator bounds, and no-fly zones (NFZs). To achieve efficient and reliable trajectory planning, a two-phase hp...

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To examine the guarding effects of Lycium barbarum polysaccharides (LBP) on liver and gut injury induced by perfluorooctanoic acid (PFOA) in broilers. Initially, a dose selection experiment for PFOA modeling was conducted. A total of 160 one-day-old broilers were randomly assigned to four groups. Th...

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Under the influence of load transfer mechanisms in the surrounding rock-resin anchorage structure, conventional rock bolts exhibit limited utilization of steel tensile capacity due to insufficient axial force at their tail sections. To address the material waste caused by mismatch between anchor rod...

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<h4>Background</h4>Nongonococcal urethritis (NGU) is the most common male reproductive tract syndrome. Ureaplasmas spp. including U. urealyticum and U. parvum, have been increasingly reported to be implicated in NGU. However, there are still many contradictions about their pathogenic rol...

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Skin aging manifests as structural degradation, functional decline, and heightened disease susceptibility. Central to this process is the overactivation of the mitogen-activated protein kinase (MAPK) signaling pathway triggered by reactive oxygen species (ROS). Autophagy, a lysosomal degradation mec...

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Given the inherent limitations of traditional psychological testing scales in terms of breadth and specificity, both comprehensive and individual assessment scales offer distinct advantages. However, challenges persist because of their complementary deficiencies in practical applications. This artic...

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<h4>Background</h4>Lung cancer, particularly non-small-cell lung cancer (NSCLC) is the leading cause of cancer mortality. Chemotherapy combined dendritic cells co-cultured with cytokine-induced killer cells (DC-CIK) immunotherapy has been applied in advanced NSCLC patients' treatmen...

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This paper studies the problem of time-varying formation-tracking control for a class of nonlinear multi-agent systems. A distributed adaptive controller that avoids the global non-zero minimum eigenvalue is designed for heterogeneous systems in which leaders and followers contain different nonlinea...

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ABSTRACT Patients with Parkinson’s disease (PD) with probable rapid eye movement sleep behavior disorder (RBD) (PD-RBD), a specific subtype of PD, are characterized by the presence of more severe motor and non-motor symptoms. This study aimed to elucidate the characteristics and interactions of gut...

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ABSTRACT Gut microbiota crucially affects metabolism and health. Hycleus cichorii Linnaeus has been listed as a medicinal insect in the Pharmacopeia of the People's Republic of China due to the presence of cantharidin, which has a curative effect on many cancers and skin diseases. In order to a...

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The accurate extraction and temporal monitoring of abandoned croplands are essential for the effective scientific management of such abandonments. Currently, analyzing time-series normalized difference vegetation index (NDVI) variations serves as a widely used method for abandoned cropland extractio...

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As an advanced real-time monitoring technique, optic fiber downhole sensing has been widely applied in monitoring fracture propagation during hydraulic fracturing. However, existing fracture shape inversion methods face two main challenges: firstly, traditional methods struggle to accurately capture...

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High-precision hyperspectral remote sensing reflectance measurement of water bodies serves as the fundamental technical basis for accurately retrieving spatiotemporal distribution characteristics of water quality parameters, providing critical data support for dynamic monitoring of aquatic ecosystem...

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In this paper, we realize an adjustable biphoton frequency comb and investigate its spatial quantum beating. Vector spontaneous four wave mixing processes in a piece of dispersion shifted fiber are produced by non-degenerate continuous wave pump lights with orthogonal polarizations to generate broad...

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