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斜切喷管固体火箭发动机喷管流场与推力特性研究

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推进技术 2020年第12期41卷 2681-2690页

作者：金贺龙王浩林庆育陶如意南京理工大学能源与动力工程学院江苏南京210094

为了研究斜切喷管固体火箭发动机的喷管流场与推力特性,采用二阶精度的AUSM格式求解守恒型N-S方程组并与Realizable k-ε湍流模型相结合,对不同角度斜切喷管的流场特性与推力特性进行数值模拟研究。同时,设计斜切喷管发动机推力测试试验... 详细信息

为了研究斜切喷管固体火箭发动机的喷管流场与推力特性,采用二阶精度的AUSM格式求解守恒型N-S方程组并与Realizable k-ε湍流模型相结合,对不同角度斜切喷管的流场特性与推力特性进行数值模拟研究。同时,设计斜切喷管发动机推力测试试验台,通过此测试平台获取发动机工作过程的推力曲线,并与数值仿真结果进行对比,验证所建立的数值仿真计算方法的可行性和有效性。结果表明:通过数值仿真方法获得的斜切喷管发动机推力与试验结果之间的误差较小;由仿真与试验结果可知,45°斜切喷管推力作用线与喷管轴线之间存在夹角,表明斜切喷管发动机存在推力偏转现象。此外,该结构喷管流场存在两个激波交汇高压强区域,同时第二道激波结构强度高于第一道。当喷管斜切角度达到40°时,随着喷管斜切角度的增加,斜切喷管的质量流量、总推力与推力偏转角不断减小,但减小趋势不断变缓。

关键词：固体火箭发动机斜切喷管推力测试激波推力偏转角

Sporadic E responds to the 2022 Tonga volcano eruptions recorded by the Meridian Project

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Earth and Planetary Physics 2025年第1期9卷 20-28页

作者： YangYi Sun Tao Yu jin Wang Chi long School of Geophysics and Geomatics China University of Geosciences(Wuhan)Wuhan 430047China School of Physics and Electronic Science Guizhou Normal UniversityGuizhou 550001China

In this study,ionosonde observations over Fuke(19.5°N,109.1°E),Wuhan(30.5°N,114.4°E),and Mohe(53.5°N,122.3°E)were analyzed to demonstrate the responses of the sporadic E()to the severe atmospheric disturbances caused by the Tonga volcanic eruptions on January 15,*** most prominent signature was the disappearance of the layer after~10:00 UT over Wuhan and Fuke,which was attributed to the vertical drift caused by the *** occurred intermittently after 13:00 UT following the arrival of the tropospheric Lamb *** examine the causal mechanism for the intermittence,we also included data of horizontal winds in the mesosphere and lower thermosphere region recorded by the meteor radars at Wuhan and Mohe in this *** wind disturbances with periods of~20 hours contributed to the formation of the layer in the nighttime on January 15.

关键词： sporadic E Tonga eruptions neutral wind disturbances

Stability and Stabilization of Sampled-Data Based LFC for Power Systems:A Data-Driven Method

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IEEE/CAA Journal of Automatica Sinica 2025年第1期 291-293页

作者： Yu-long Fan Chuan-Ke Zhang Yong he the School of Automation China University of Geosciences the Hubei Key Laboratory of Advanced Control and Intelligent Automation for Complex Systems the Engineering Research Center of Intelligent Technology for Geo-Exploration Ministry of Education IEEE

Dear Editor,This letter is concerned with stability analysis and stabilization design for sampled-data based load frequency control(LFC) systems via a data-driven method. By describing the dynamic behavior of LFC systems based on a data-based representation, a stability criterion is derived to obtain the admissible maximum sampling interval(MSI) for a given controller and a design condition of the PI-type controller is further developed to meet the required MSI. Finally, the effectiveness of the proposed methods is verified by a case study.

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基于变邻域粒子群算法的铁水硅含量稳定性分析

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钢铁研究学报 2017年第2期29卷 87-92,97页

作者：杨凯金永龙何志军辽宁科技大学辽宁鞍山114051 宝钢发展公司上海201900

影响高炉铁水硅含量的因素往往复杂多变,影响程度不一。采用鱼骨分析法收集所有可能对硅含量产生影响的因素,经过相关分析和特征选择,最终选取6个参数作为模型的输入参数。采用改进的粒子群优化算法对支持向量机(SVM)中的参数进行优化,... 详细信息

影响高炉铁水硅含量的因素往往复杂多变,影响程度不一。采用鱼骨分析法收集所有可能对硅含量产生影响的因素,经过相关分析和特征选择,最终选取6个参数作为模型的输入参数。采用改进的粒子群优化算法对支持向量机(SVM)中的参数进行优化,提出基于变邻域粒子群(VNPSO)优化SVM的铁水硅含量预测模型。通过钢厂的实际生产数据进行验证,平均相对误差达到0.69%,平均绝对误差达到3.4×10^(-3),模型具有很高的预测精度。同时,绘制铁水中硅含量控制图,分析硅含量波动情况,并依此模型给出硅含量稳定性控制措施。

关键词：炼铁硅含量智能优化仿真

Development and Application of Equation of State for Square-Well Chain-Like Fluid with Variable Interaction Range

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华东理工大学学报（自然科学版） 2009年第6期35卷 946-946页

作者： LIU Hong-lai LI jin-long he Chang-chun FAN Dong- fu PENG Chang-jun State Key Laboratory of Chemical Engineering Department of Chemistry East China University of Science and Technology Shanghai 200237 China

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光电干扰箔片高速动态抛撒云团散布试验研究

兵工学报 2017年第6期38卷 1075-1081页

作者：王政伟王浩张成谢达勇金贺龙南京理工大学能源与动力工程学院江苏南京210094

为了研究大数量光电干扰箔片在高速环境中抛撒后的云团形态分布,以调速小火箭作为高速载体,配合活塞式的箔片抛撒结构,运用子母弹的抛撒方式,进行了不同速度下的抛撒试验。通过抛撒各阶段云团发展状态的高速数字图像记录,清晰反映了箔... 详细信息

为了研究大数量光电干扰箔片在高速环境中抛撒后的云团形态分布,以调速小火箭作为高速载体,配合活塞式的箔片抛撒结构,运用子母弹的抛撒方式,进行了不同速度下的抛撒试验。通过抛撒各阶段云团发展状态的高速数字图像记录,清晰反映了箔片出舱、分离、扩散的动态过程。从微观上分析了箔片的运动过程,得出了箔片在高速抛撒过程的分离规律;从宏观上统计分析箔片与云团散布参数,分析了不同速度下箔片散布特征。对比不同载体速度发现,载体速度的增加可明显增大云团的径向分布范围和云团响应速度,但并不能线性增大云团的径向分布范围。

关键词：兵器科学与技术箔片光电干扰散布面源诱饵

Chromsome and pedigree analysis of congenital malformation of external and middle ear

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Journal of Hainan Medical University 2019年第8期25卷 75-78页

作者： Sai-Ming Chen Xiao-Liu Zhou Sui-Jun Chen Hua-Song Zhang Zhi-Qun Li jin-long he Sui-Jun Chen Department of ENT First Affiliated Hospital of Hainan Medical CollegeHaikou570102Hainan ProvinceChina Department of ENT Sun Yat Sen Memorial HospitalSun Yat Sen UniversityGuangzhou510120Guangdong ProvinceChina

Objective:Using chromosome analysis of a Chinese pedigree to investigate the genetic relationship between chromosome and congenital malformation of the external and middle ear combined with pre-auricular ***: Clinical data of all members from 3 family with congenital malformation of the external and middle ear combined with pre-auricular fistula were collected. A pedigrees chart of each family was draw Venous blood samples of all participants were taken for karyotype ***: A total of 21 members in three generations from three families were screened. Chromosomal abnormalities were detected in 9 people, including 3 patients and 6 carriers. The carriers were fathers and paternal grandparents. Structural abnormalities in chromosomes 1, 2 and 11 were ***:The genetic patterns of congenital malformation of the external and middle ear combined with the pre- auricular fistula in these three families are consistent with autosomal recessive inheritance. Family survey is helpful for further study of this disease.

关键词： Malformation of the external and middle ear Chromosome Pedigree Survey

Enhanced autophagic clearance of amyloid-βvia histone deacetylase 6-mediated V-ATPase assembly and lysosomal acidification protects against Alzheimer's disease in vitro and in vivo

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Neural Regeneration Research 2025年第9期20卷 2633-2644页

作者： Zhimin long Chuanhua Ge Yueyang Zhao Yuanjie Liu Qinghua Zeng Qing Tang Zhifang Dong Guiqiong he Institute of Neuroscience School of Basic Medical SciencesChongqing Medical UniversityChongqingChina Department of Anatomy Chongqing Medical UniversityChongqingChina Department of Physiology Chongqing Medical UniversityChongqingChina Pediatric Research Institute Children’s Hospital of Chongqing Medical UniversityChongqingChina Ministry of Education Key Laboratory of Child Development and Disorders Children’s Hospital of Chongqing Medical UniversityChongqingChina National Clinical Research Center for Child health and Disorders Children’s Hospital of Chongqing Medical UniversityChongqingChina Chongqing Key Laboratory of Child Neurodevelopment and Cognitive Disorders Children’s Hospital of Chongqing Medical UniversityChongqingChina

Recent studies have suggested that abnormal acidification of lysosomes induces autophagic accumulation of amyloid-βin neurons,which is a key step in senile plaque ***,resto ring normal lysosomal function and rebalancing lysosomal acidification in neurons in the brain may be a new treatment strategy for Alzheimer's *** acetylation/deacetylation plays a central role in lysosomal ***,we show that inhibiting the classic microtubule deacetylase histone deacetylase 6 with an histone deacetylase 6 shRNA or thehistone deacetylase 6 inhibitor valproic acid promoted lysosomal reacidification by modulating V-ATPase assembly in Alzheimer's *** rthermore,we found that treatment with valproic acid markedly enhanced *** clearance of amyloid-βaggregates,and ameliorated cognitive deficits in a mouse model of Alzheimer's *** findings demonstrate a previously unknown neuroprotective mechanism in Alzheimer's disease,in which histone deacetylase 6 inhibition by valproic acid increases V-ATPase assembly and lysosomal acidification.

关键词： Alzheimer's disease amyloid-β APP/PS1 mice autophagy cognitive impairment histone deacetylase 6 lysosomal acidification microtubule acetylation valproic acid V-ATPase

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蒙医温针疗法结合口服蒙药治疗寒性腹泻

中国民族医药杂志 2017年第3期23卷 14-15页

作者：金海龙何福龙邢志阳辽宁省阜蒙县佛寺镇防保站辽宁阜新123100 辽宁省蒙医医院辽宁阜新123100

目的:观察蒙医温针疗法结合口服蒙药治疗寒性腹泻的临床疗效。方法:(蒙医温针疗法+蒙药)和对照组1(单纯蒙医温针疗法)、对照组2(单纯蒙药治疗),每组40例。结果:治疗组有效率95%,对照组1有效率为70%,对照组2有效率57.2%。结论:蒙医温针... 详细信息

目的:观察蒙医温针疗法结合口服蒙药治疗寒性腹泻的临床疗效。方法:(蒙医温针疗法+蒙药)和对照组1(单纯蒙医温针疗法)、对照组2(单纯蒙药治疗),每组40例。结果:治疗组有效率95%,对照组1有效率为70%,对照组2有效率57.2%。结论:蒙医温针疗法结合蒙药治疗寒性腹泻的疗效确切。

关键词：腹泻蒙医温针疗法蒙药:临床