Søgeresultater - Li Ma

The transition to a service-based economy represents a key global macroeconomic trend, with productive services playing a critical role in driving economic growth. For China, the development of productive services is a strategic priority in its pursuit of high-quality development. Most existing rese...

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In order to improve the mechanical properties of building anti-corrosion epoxy resin coating, the self-repairing building anti-corrosive coating was prepared by adding capsule into epoxy resin.Besides, the change of mechanical properties of the coating caused by the capsule were studied and the self...

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The pursuit of the ecological civilization embodies the strategy of China for sustainable development and the harmonious coexistence of humans and nature. The Yangtze River Economic Belt (YREB) serves as a critical region for this initiative. Although prior studies have assessed spatiotemporal diffe...

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Speech emotion recognition is deemed to be a meaningful and intractable issue among a number of do- mains comprising sentiment analysis, computer science, pedagogy, and so on. In this study, we investigate speech emotion recognition based on sparse partial least squares regression (SPLSR) approach...

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ObjectiveConsidering the traditional female nature of the nursing field, male nursing students often experience a strong urge to leave the profession. A robust professional identity (PI) is crucial for male nurses, as it can alleviate professional stress and enhance their willingness to remain in th...

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This study develops a sampled-data controller for the path tracking system of an autonomous agricultural tractor (AAT) on the basis of a state observer. First of all, to solve the cost of the whole system, the state observer is constructed for estimating the heading offset and for accelerating the c...

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This study investigates dynamic stall mechanisms of a pitching NACA 0012 airfoil through high-fidelity computational fluid dynamics (CFD) simulations. The improved delayed detached eddy simulation (IDDES) method based on a sliding mesh system is constructed and validated against experimental airload...

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Due to factors such as low porosity and permeability, thin sand body thickness, and strong interlayer heterogeneity, the fluid flow in the tight reservoir (beach-bar sandstone reservoir) exhibits obvious nonlinear seepage characteristics. Considering the time-varying physical parameters of different...

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Megaprojects have a huge contribution to the built environment and development of nations, and they are a key contribution economically and socially. However, we can only seek to mitigate the unavoidable environmental impacts that accompany megaprojects, particularly in the construction industry. Co...

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This report details the case of a 64-year-old male with well-controlled type 2 diabetes mellitus and hypertension. The patient presented with a 20-day history of progressive dyspnea, cough, and intermittent fever, which worsened despite antibiotic treatment. The initial assessment revealed leukocyto...

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This paper proposed a moment tensor regression prediction technology based on ResNet for microseismic events. Taking the great advantages of deep networks in classification and regression tasks, it can realize the great potential of fast and accurate inversion of microseismic moment tensors after th...

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BackgroundThe prevalence of psychological symptoms in adolescents has been increasing and has become an important public health issue of concern to countries around the world. However, no studies have been conducted on the association between sugar-sweetened beverage (SSB) consumption, muscle streng...

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Background: Surgical excision of basal cell carcinoma (BCC) in aesthetic facial regions (e.g., nasal, periocular) risks disfiguring scars and functional deficits, particularly for elderly patients with surgical contraindications or extensive lesions where complete tumor clearance proves challenging....

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Abstract BackgroundRapid advancements in web-based technology have significantly transformed the health care landscape. In China, internet hospitals have emerged as vital components of the health care system. This rapid growth highlights the necessity for a thorough evaluation...

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License plate recognition in sandstorm conditions faces challenges such as image blurriness, reduced contrast, and partial information loss, which result in significant limitations in the feature extraction and recognition accuracy of existing methods. To address these challenges, this study propose...

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Invasion of the oriental fruit fly, Bactrocera dorsalis, into new niches containing different food sources (a process referred to as host shift), may cause population genetic differentiation and sympatric speciation. To attempt to infer that experimentally, test populations were established by trans...

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This study innovatively investigated the dynamic evolution of multidimensional quality characteristics during lactic acid bacteria co-fermentation of two medicinal-food homologous resources: Polygonatum sibiricum Red. and Crataegus pinnatifida Bunge. Interactions between microbial metabolism and bio...

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ObjectiveTo explore the role of free provision of disinfectant wipes combined with bundle management in preventing Multi-Drug Resistant Organism (MDRO) infections in the Respiratory and Intensive Care Unit (RICU).MethodsThis study included patients admitted to the RICU between January 2022 and June...

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Triple-negative breast cancer (TNBC) frequently evades immune recognition and elimination, resulting in an immunosuppressive microenvironment. The phagocytic activity of tumor-associated macrophages underscores the development of nanomaterials as a promising strategy to target these macrophages and...

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