54 hasil untuk "Keyu Li"
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Artikel Jurnal Teks lengkap
Numerical Investigation of the Coupling Effects of Pulsed H2 Jets and Nanosecond-Pulsed Actuation in Supersonic Crossflow
Numerical investigations were conducted to analyze the coupling effects of pulsed H2 jets and nanosecond-pulsed actuation (NS-SDBD) in a supersonic crossflow. The FVM was employed to solve the multi-component 2D URANS equations with the SST k-omega turbulence model, while H2-air combustion was…
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Predictive role of the prognostic nutritional index for long-term prognosis among patients undergoing pancreatoduodenectomy: a meta-analysis
Abstract Purpose To identify the predictive role of the preoperative prognostic nutritional index (PNI) for long-term survival in patients undergoing pancreatoduodenectomy. Methods The PubMed, EMBASE, Web of Science, Cochrane Library and CNKI databases were searched up to October 28, 2024. The…
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Interactions in psychosocial interventions in dementia care: A systematic review protocol
Background: Psychosocial interventions are regarded as preferable in dementia care, as they have been tested as effective in preserving people living with dementia’s function, reducing stress, and enhancing well-being. Typically delivered in structural activities, these interventions feature…
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Paid Access to Information Promotes the Emergence of Cooperation in the Spatial Prisoner’s Dilemma
In biological evolution, organisms that are more adapted to the environment tend to survive better, which can be explained in part by evolutionary game theory. In this paper, we propose an improved spatial prisoner’s dilemma game model, which allows the focal player to access the strategy of other…
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Numerical Analysis of the Three-Dimensional Interaction Between Nanosecond-Pulsed Actuation and Pulsed H2 Jets in Supersonic Crossflow
A combined flow control method, integrating nanosecond pulsed surface dielectric barrier discharge (NS-SDBD) with pulsed jets, is proposed to address the challenge of low mixing efficiency in supersonic combustion. Numerical validation and mechanism analysis were conducted by solving the…
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A Numerical Investigation of Supersonic Combustion Flow Control by Nanosecond-Pulsed Actuations
The efficiency of supersonic combustion is largely dependent on inlet and injection parameters. Additional energy input is required in some off-design conditions, and nanosecond discharge actuation can be a solution. In the present study, a phenomenological model of a nanosecond-pulsed surface…
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Chimeric antigen receptor–engineered T cells for liver cancers, progress and obstacles
Chimeric antigen receptor–engineered T cells therapy has become the hottest topic of immunotherapy, as its great successes achieved in treating refractory hematological malignancies. These successes also paved the road to novel strategies of treating various solid tumors including liver cancer…
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Massive hemoptysis in pregnancy treated by ECMO combined with electronic bronchoscopy: A case report
Background: Massive hemoptysis during pregnancy is very rare. Dieulafoy's disease is one of the causes of massive hemoptysis. There are few reports of ECMO use to treat massive hemoptysis during pregnancy. Findings: We report for the first time a patient with Dieulafoy's disease diagnosed at 29…
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Simulation and Design of Three 5G Antennas
In the context of 5G networks, this paper investigates microstrip array antennas and mobile terminal MIMO array antennas. It introduces two innovative designs and, based on these, develops and fabricates a mobile terminal antenna. The first of these designs, a 4 × 4 microstrip array antenna…
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An Improved Physical Model for Open Channel Confluences: Bridging the Gap Between Laboratory and Field Observations
Abstract Despite decades of research on hydro‐morphodynamic processes at open‐channel confluences, significant discrepancies persist between flume experiments and field observations. This study investigated the underlying causes by compiling and comparing geometric and hydraulic parameters from…
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The Functions of Phasic Wing-Tip Folding on Flapping-Wing Aerodynamics
Insects produce a variety of highly acrobatic maneuvers in flight owing to their ability to achieve various wing-stroke trajectories. Among them, beetles can quickly change their flight velocities and make agile turns. In this work, we report a newly discovered phasic wing-tip-folding phenomenon…
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Comparative effect of different corticosteroids in severe community-acquired pneumonia: a network meta-analysis
Abstract Background and objectives Severe community-acquired pneumonia (CAP) is a potentially fatal pulmonary disease. Although studies have investigated the efficacy and safety of corticosteroids for severe CAP, the results remain inconsistent. Moreover, there is a lack of sufficient evidence to…
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Multiscale Aeroelastic Optimization Method for Wing Structure and Material
Microstructured materials, characterized by their lower weight and multifunctionality, have great application prospects in the aerospace field. Optimization methods play a pivotal role in enhancing the design efficiency of both macrostructural and microstructural topology (MMT) for aircraft. This…
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Semianalytical Research on Aerothermoelastic Behaviors of Functionally Graded Plates under Arbitrary Temperature Fields in Hypersonic Vehicles
Hypersonic vehicles are susceptible to considerable aerodynamic heating and noticeable aerothermoelastic effects during flight due to their high speeds. Functionally graded materials (FGMs), which enable continuous changes in material properties by varying the ratio of different materials, provide…
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Insulator discharge severity assessment algorithm based on RDIDSNet
For the insulator discharge severity assessment at the line inspection site using edge-end computing equipment and UV cameras, this paper proposes an improved assessment algorithm based on the YOLOv8 algorithm. Firstly, LDConv is introduced to replace the convolution of the backbone network part of…
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Successful Neoadjuvant Chemotherapy for Small-Cell Neuroendocrine Carcinoma of the Pancreas: A Case Report
Neoadjuvant therapy for pancreatic neuroendocrine tumors may potentially aid downstaging, increase the possibility of radical surgery. We herein report a case of a 63-year-old man who had been diagnosed with locally advanced small-cell neuroendocrine carcinomas of the pancreas according to the…
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Topology Optimization of Large-Scale Offshore Wind Power Collection System Based on Graph Genetic DMST
This paper proposes a graph genetic dynamic minimum spanning tree (DMST) optimization method for the layout designing of large-scale offshore wind farm collector system to minimize total lifecycle cost, considering both current carrying capacity and cable crossing avoiding (CCA) constraints. In…
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Effects of Stropharia rugosoannulata–Tomato Rotation Coupled with Spent Mushroom Substrate Incorporation on Soil Fertility, Yield and Fruit Quality of Tomato
Continuous monocropping of tomato causes soil degradation, secondary salinization, and yield decline. Mushroom–vegetable rotation coupled with spent mushroom substrate (SMS) incorporation offers a recycling strategy to mitigate these obstacles. Here, a five-stage progressive field experiment…
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Hybrid Physics-Informed Residual Learning for Robust BDS-3 Satellite Clock Bias Prediction
Real-time precise point positioning (RT-PPP) has enabled a wide range of high-precision positioning and navigation applications, while its reliability strongly depends on the availability and continuity of precise satellite clock products. In the third-generation BeiDou Navigation Satellite System…