Search Results - Jun XU

Oocyte maturation represents a fundamental biological process in bovine reproduction, establishing the physiological basis for fertilization and early embryonic development while critically determining the propagation of improved varieties and breeding efficiency. The roles of MQC in reproduction ha...

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Internal soil erosion caused by water infiltration around defective buried pipes poses a significant threat to the long-term stability of underground infrastructures such as pipelines and highway culverts. This study employs a coupled computational fluid dynamics–discrete element method (CFD–DEM) fr...

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With the rapid urbanization and expansion of rail transit systems, the axle loads of trains, which are a critical aspect of their configuration, have significantly increased. This increase poses substantial potential threats to the safety and service life of existing bridges within urban rail transi...

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In this paper, a novel three-dimensional integrated spoof surface plasmon polaritons (SSPPs) transmission line (TL) is proposed. The controlled slow surface wave can propagate along unit cells that are planted on a metal strip periodically, which is similar to the typical SSPPs TLs. The dispersion c...

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The cytochrome P450 (CYP) superfamily is the largest enzymatic protein family in plants, and it also widely exists in mammals, fungi, bacteria, insects and so on. Members of this superfamily are involved in multiple metabolic pathways with distinct and complex functions, playing important roles in a...

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Over the past few decades, China's economic growth and urbanization have driven a significant migration of rural laborers to cities. Recently, however, an increasing number of migrant workers have chosen to return to their hometowns for employment opportunities. Understanding the factors influe...

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We propose a new mechanism of generating spin polarization in heavy-ion collisions dominated by nucleon degree of freedom. By incorporating the spin change in nucleon-nucleon scatterings based on the phase shift data together with the constraint of rigorous angular momentum conservation and Pauli bl...

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Many studies have focused on ageing and gut microbiota, but the correlation between gut microbiota and physical function in older adults, especially those with longevity, remains obscure and deserves further exploration. In this study we investigated changes in the gut microbiota and the association...

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Blind and visually impaired (BVI) people face significant challenges in perception, navigation, and safety during travel. Existing infrastructure (e.g., blind lanes) and traditional aids (e.g., walking sticks, basic audio feedback) provide limited flexibility and interactivity for complex environmen...

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TiN hard films are the basis of many existing multi - component nitride hard films. The N/Ti atomic ratio has important influences on TiN hard films. Based on the preparation process methods of TiN hard films, the influencing factors and control ways of the change of N content in the films were disc...

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Based on the law of pitting corrosion development speed and the accelerating effect of stress on corrosion current in the field coupon test, the differential equations of pitting corrosion speed and pit shape change law under stress were proposed and solved by numerical methods. Analysis results ind...

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A highly sensitive liquid-level sensing technique is proposed and experimentally demonstrated. Two narrowband fiber Bragg gratings (FBGs) with high reflectivity are used to filter out the two light signals from the broadband chaos. Two weak FBGs are served respectively as the liquid-level sensors at...

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This paper reviewed management of pesticide residues in China including laws and regulations, the supervision system, the standard system, and the quality and safety of agricultural products. The process of establishment and internationalization of standards for pesticide residues were also discusse...

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In the processes of oilfield drilling, acidification, mining, gathering, oil and water treatment, storage and transportation, safety accidents often occur due to corrosion.In order to reduce the occurrence of such events, the method of adding corrosion inhibitors is adopted for protection.In this pa...

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In this study, the hydrolysis of the insecticide ethiprole in buffered solutions at pH 4.0, 7.0 and 9.0, respectively, and the degradation and adsorption-desorption behaviors of ethiprole in five agricultural soil samples from China were investigated. The half-lives under anaerobic conditions were f...

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Objective To construct and validate a risk prediction model for hypoproteinemia in adults following cardiac valve surgery with cardiopulmonary bypass (CPB), providing medical staff with an effective tool for early identification and intervention. Methods This retrospective cohort study analyzed clin...

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Effects of Zn and Li alloying on microstructural evolution and mechanical properties of extruded Mg-1Gd alloys were investigated. The addition of single Zn leaded to significant grain refinement in Mg-1Gd alloy, whereas Li alloying induced remarkable grain coarsening. The average grain sizes of the...

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Agricultural expansion has caused groundwater overuse and ecological water loss, increasing Water-Food-Ecosystems (WFE) conflicts. Differing water interests between regional managers and farmers, along with poor WFE coordination, have impeded large-scale sustainability. To address this, we developed...

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