Search Results - ZHANG Qian

Production capacity evaluation is a critical task during the early development stages of gas reservoirs. Clarifying the impact of reservoir petrophysical properties, water saturation, and CO2 volume fraction in fluid composition on gas well production capacity is of great significance for accurately...

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The method of characteristics (MOC) has gained significant attention in high-fidelity neutron transport calculations for reactor cores due to its geometric flexibility, high accuracy, and inherent parallelizability. However, its direct application to three-dimensional (3D) core transport calculation...

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[Objective] In response to the increasingly diversified charging demands arising from the rapid development of electric vehicles （EVs）， this study investigates a planning method for charging stations based on the collaboration of multiple types of charging posts.[Methods] From the perspective of EVs...

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In order to investigate the effect of pore structure on the compression properties of porous titanium, the compression process of porous titanium was simulated by finite element method. The influence of different pore structure parameters such as porosity, pore size and pore shape on the compression...

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[Objective] Reservoir construction has severely degraded the ecological environment of reservoir banks. The high-frequency, large-amplitude water level fluctuations make ecological restoration in the drawdown zone particularly challenging. After the operation of Henan Tianchi Pumped Storage Power St...

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目的 通过血管超声评估颈动脉蹼的结构特征并探究其与缺血性卒中的关系。 方法 回顾性连续纳入2021年1月—2024年6月就诊于首都医科大学附属北京天坛医院、经CTA确诊为颈动脉蹼且存在单侧颈动脉供血区缺血性卒中的患者。根据同侧颈动脉供血区缺血性卒中的发生情况，将患者分为同侧卒中组和对侧卒中组。通过血管超声测量颈动脉蹼长度、厚度、与管壁间夹角，记录颈动脉蹼的侧别、血管内位置、附着点、是否随血流飘动、是否顺血流方向及是否存在周围血栓等信息，比较两组患者颈动脉蹼的结构差异。 结果 本研究纳入102例颈动脉蹼患者，其中同侧卒中组70例，对侧卒中组32例。同侧卒中组患者肢体无力、运动障碍的发生率...

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