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电针水沟穴联合温针灸治疗急性脑梗死的临床观察

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广州中医药大学学报 2024年第6期41卷 1498-1503页

作者：陈欣莫倜刘淑文李兰竹刘建浩广州中医药大学研究生院广东广州510006 三亚市中医院中医住院医师规范化培训基地海南三亚572000

【目的】观察电针水沟穴联合温针灸治疗急性脑梗死的临床疗效。【方法】将96例急性脑梗死患者随机分为观察组和对照组,每组各48例。2组患者均给予常规基础治疗,对照组给予温针灸治疗,观察组在对照组治疗的基础上,给予电针水沟穴治疗。... 详细信息

【目的】观察电针水沟穴联合温针灸治疗急性脑梗死的临床疗效。【方法】将96例急性脑梗死患者随机分为观察组和对照组,每组各48例。2组患者均给予常规基础治疗,对照组给予温针灸治疗,观察组在对照组治疗的基础上,给予电针水沟穴治疗。每周治疗5 d,共治疗3周。治疗3周后,评价2组临床疗效,观察2组患者治疗前后美国国立卫生研究院的卒中量表(NIHSS)评分、日常生活活动能力(Barthel Index,BI)量表评分以及Fugl-Meyer运动功能评估量表评分的变化情况。比较2组患者治疗前后白细胞介素6(IL-6)、超敏C反应蛋白(hs-CRP)、同型半胱氨酸(Hcy)水平的变化情况。并评价2组的安全性及不良反应的发生情况。【结果】(1)观察组总有效率为95.83%(46/48),对照组为81.25%(39/48)。观察组疗效优于对照组,差异有统计学意义(P0.05)。【结论】电针水沟穴联合温针灸治疗急性脑梗死,可明显促进患者的神经功能恢复,从而改善患者的运动和生活能力,有效降低炎性因子和同型半胱氨酸水平,临床疗效显著。

关键词：电针水沟穴温针灸急性脑梗死炎性因子同型半胱氨酸临床观察

Emergent symmetry in quantum phase transition:From deconfined quantum critical point to gapless quantum spin liquid

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Science Bulletin 2024年第2期69卷 190-196页

作者： wen-Yuan liu Shou-shu Gong Wei-Qiang Chen Zheng-Cheng Gu Department of Physics The Chinese University of Hong KongHong KongChina Division of Chemistry and Chemical Engineering California Institute of TechnologyPasadena CA 91125USA School of Physical Sciences Great Bay UniversityDongguan 523000China Great Bay Institute for Advanced Study Dongguan 523000China Department of Physics and Shenzhen Institute for Quantum Science and Engineering Southern University of Science and TechnologyShenzhen 518055China Shenzhen Key Laboratory of Advanced Quantum Functional Materials and Devices Southern University of Science and TechnologyShenzhen 518055China

The emergence of exotic quantum phenomena in frustrated magnets is rapidly driving the development of quantum many-body physics,raising fundamental questions on the nature of quantum phase *** we unveil the behaviour of emergent symmetry involving two extraordinarily representative phenomena,i.e.,the deconfined quantum critical point(DQCP)and the quantum spin liquid(QSL)*** large-scale tensor network simulations,we study a spatially anisotropic spin-1/2 square-lattice frustrated antiferromagnetic(AFM)model,namely the J1x-J1y-J2 model,which contains anisotropic nearestneighbor couplings J1x,J1y and the next nearest neighbor coupling *** small J1y/J1x,by tuning J2,a direct continuous transition between the AFM and valence bond solid phase is *** growing J1y/J1x,a gapless QSL phase gradually emerges between the AFM and VBS *** observe an emergent O(4)symmetry along the AFM–VBS transition line,which is consistent with the prediction of DQCP *** surprisingly,we find that such an emergent O(4)symmetry holds for the whole QSL–VBS transition line as *** findings reveal the intrinsic relationship between the QSL and DQCP from categorical symmetry point of view,and strongly constrain the quantum field theory description of the QSL *** phase diagram and critical exponents presented in this paper are of direct relevance to future experiments on frustrated magnets and cold atom systems.

关键词： Tensor network Quantum phase transition Emergent symmetry Quantum spin liquid Deconfined quantum critical point Anisotropic

中华鳖源按蚊伊丽莎白菌的分离鉴定及药敏特性研究

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水生生物学报 2024年第4期48卷 683-693页

作者：王玉柱蒋巍巍刘文舒路晶晶唐艳强肖海红郭小泽李思明江西省农业科学院畜牧兽医研究所南昌330200 四川农业大学动物科技学院成都611130

研究对从江西省抚州市南丰县某中华鳖养殖基地患病中华鳖(Trionyx sinensis)组织中分离培养得到的一株按蚊伊丽莎白菌(Elizabethkingia anophelis)疑似菌株进行鉴定和药敏特性研究。在无菌环境中解剖患病中华鳖得到肝脏、脾脏组织,匀浆... 详细信息

研究对从江西省抚州市南丰县某中华鳖养殖基地患病中华鳖(Trionyx sinensis)组织中分离培养得到的一株按蚊伊丽莎白菌(Elizabethkingia anophelis)疑似菌株进行鉴定和药敏特性研究。在无菌环境中解剖患病中华鳖得到肝脏、脾脏组织,匀浆后接种在LB培养基上,分离得到优势菌株EJX2021。对该菌株进行形态学观察、16S RNA基因序列测定和生理生化鉴定以鉴定菌株种类;进行人工回归感染、组织病理学观察、毒力因子分析和抗生素药物敏感性试验研究其致病能力和药物敏感性特征。从患病中华鳖中分离出一株优势菌株EJX2021,结合其表型特征、16S RNA基因序列测定和生理生化鉴定,确定其为按蚊伊丽莎白菌。在人工回归感染后,该菌株对中华鳖15d的LD50为1.62×10^(8)CFU/mL,95%置信区间为(0.78—3.37)×10^(8)CFU/mL;组织病理学观察肠道、肺脏、脾脏、肝脏等组织出现不同程度病变。毒力因子分析显示该菌株包含246个潜在毒力基因。药物敏感性试验显示该菌株为多重耐药菌株,对多西环素、米诺环素、卡那霉素、哌拉西林、恩诺沙星、氟苯尼考敏感,对头孢曲松、头孢哌酮中度敏感,对新霉素等15种抗生素具有耐药性。研究证明了按蚊伊丽莎白菌是能够导致中华鳖病害的一种病原菌,为该细菌导致中华鳖病害的检测、鉴别和防治提供科学依据。

关键词：按蚊伊丽莎白菌分离鉴定药敏特性中华鳖

Elaborative collection of condensed combustion products of solid propellants:Towards a real Solid Rocket Motor(SRM)operational environment

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Chinese Journal of Aeronautics 2024年第1期37卷 77-88页

作者： wenchao ZHANG Zhimin FAN Dongliang GOU Yao shu Peijin liu Aimin PANG wen AO National Key Laboratory of Solid Rocket Propulsion Northwestern Polytechnical UniversityXi’an 710072China Science and Technology on Aerospace Chemical Power Laboratory Xiangyang 441003China

A novel constant-pressure and constant-quenching distance Condensed Combustion Products(CCPs)collection system was developed,coupled with a timing control system,to collect the CCPs formed in the course of burning of aluminum-based composite *** effects of adiabatic graphite plating,collection zone,quenching distance,time series of collection,and propellant burning rate on the microscopic morphology,particle size distribution and unburned aluminum content of CCPs were *** was verified that the graphite plating can provide a high-fidelity high-temperature environment for propellant *** combustion efficiency is improved by 2.44% compared to the bare propellant *** time series of collection has a significant effect on the combustion efficiency of aluminum,and the combustion efficiency of aluminum in the thermal state(1.2-2.4 s)is 2.75% higher than that in the cold state(0-1.2 s).Similarly,the characteristics of the CCPs in different collection zones are *** the quenching distance of 5 mm,the combustion efficiency of aluminum in the core zone(85.39%)is much lower than that in the outer zone(92.07%),while the particle size of the CCPs in the core zone(172μm)is larger than that in the outer zone(41μm).This indicates that the core zone is more likely to produce large-sized and incompletely burned agglomerates during the propellant combustion *** burning rates also lead to a significant difference in particle size distribution and combustion *** burning rates result in higher combustion efficiency.A detailed sequence of the elaborative collection process of CCPs is proposed,mainly including the setting of ignition delay time,burning rate,working pressure,plating length and time series of *** findings of this study are expected to provide a reliable tool for the evaluation of the combustion efficiency of solid propellants.

关键词： Composite propellants Condensed combustion products Aluminum Combustion efficiency Particle size distribution

燃气轮机叶片参数化建模系统设计与叶片成型偏差分析

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航空精密制造技术 2024年第1期60卷 17-20页

作者：刘树文徐光利张周周孙航博傅骏李龙涛西安阎良国家航空高技术产业基地管理委员会西安710000 成都航飞航空机械设备制造有限公司成都610003 西安博胜航空装备有限公司西安710000 四川工程职业技术学院德阳618000

为了便于航空发动机和燃气轮机叶片数字化建模,设计建立基于UG二次开发技术的燃气轮机叶片参数化建模系统,将具体介绍叶片典型榫头与叶根的参数化建模;对比分析了叶片型线拟合方法,完成基于点云数据的叶片型线拟合;最后对叶片模型进行... 详细信息

为了便于航空发动机和燃气轮机叶片数字化建模,设计建立基于UG二次开发技术的燃气轮机叶片参数化建模系统,将具体介绍叶片典型榫头与叶根的参数化建模;对比分析了叶片型线拟合方法,完成基于点云数据的叶片型线拟合;最后对叶片模型进行偏差分析,并提出型线拟合优化方法。

关键词：叶片参数化建模型线拟合偏差分析

A Comparative Study on the Post-Buckling Behavior of Reinforced Thermoplastic Pipes(RTPs)Under External Pressure Considering Progressive Failure

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China Ocean Engineering 2024年第2期38卷 233-246页

作者： DING Xin-dong WANG shu-qing liu wen-cheng YE Xiao-han College of Engineering Ocean University of ChinaQingdao 266100China Shandong Provincial Key Laboratory of Ocean Engineering Ocean University of ChinaQingdao 266100China Department of Marine Technology Norwegian University of Science and Technology(NTNU)Trondheim NO-7491Norway

The collapse pressure is a key parameter when RTPs are applied in harsh deep-water *** investigate the collapse of RTPs,numerical simulations and hydrostatic pressure tests are *** the numerical simulations,the eigenvalue analysis and Riks analysis are combined,in which the Hashin failure criterion and fracture energy stiffness degradation model are used to simulate the progressive failure of composites,and the“infinite”boundary conditions are applied to eliminate the boundary *** for the hydrostatic pressure tests,RTP specimens were placed in a hydrostatic chamber after filled with *** has been observed that the cross-section of the middle part collapses when it reaches the maximum *** collapse pressure obtained from the numerical simulations agrees well with that in the ***,the applicability of NASA SP-8007 formula on the collapse pressure prediction was also *** has a relatively greater difference because of the ignorance of the progressive failure of *** the parametric study,it is found that RTPs have much higher first-ply-failure pressure when the winding angles are between 50°and 70°.Besides,the effect of debonding and initial ovality,and the contribution of the liner and coating are also discussed.

关键词： reinforced thermoplastic pipes post-buckling behavior progressive failure of composites debonding initial ovality

Risk Assessment of Deep-Water Horizontal X-Tree Installation

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China Ocean Engineering 2024年第2期38卷 210-220页

作者： MENG wen-bo FU Guang-ming HUANG Yi liu shu-jie HUANG Liang GAOYong-hai CNOOC China Limited Zhanjiang BranchZhanjiang 524057China Key Laboratory of Unconventional Oil and Gas Development Ministry of Education(China University of Petroleum(East China))Qingdao 266580China

Due to the high potential risk and many influencing factors of subsea horizontal X-tree installation,to guarantee the successful completion of sea trials of domestic subsea horizontal X-trees,this paper established a modular risk evaluation model based on a fuzzy fault ***,through the analysis of the main process oftree down and combining the Offshore&Onshore Reliability Data(OREDA)failure statistics and the operation procedure and the data provided by the job,the fault tree model of risk analysis of the tree down installation was ***,by introducing the natural language of expert comprehensive evaluation and combining fuzzy principles,quantitative analysis was carried out,and the fuzzy number was used to calculate the failure probability of a basic event and the occurrence probability of a top ***,through a sensitivity analysis of basic events,the basic events of top events significantly affected were determined,and risk control and prevention measures for the corresponding high-risk factors were proposed for subsea horizontal X-tree down installation.

关键词： subsea horizontal X-tree risk assessment fuzzy fault tree modular risk evaluation model

Fe/S oxidation-coupled arsenic speciation transformation mediated by AMD enrichment culture under different pH conditions

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Journal of Environmental Sciences 2024年第3期137卷 681-700页

作者： Yu-hang Zhou Wei-xi Huang Zhen-yuan Nie Hong-chang liu Yue liu Can Wang Jin-lan Xia wen-sheng shu Key Lab of Biometallurgy of Ministry of Education of China School of Minerals Processing and BioengineeringCentral South UniversityChangsha 410083China School of Life Sciences South China Normal UniversityGuangzhou 510631China

Arsenic(As)speciation transformation in acid mine drainage(AMD)is comprehensively affected by biological and abiotic factors,such as microbially mediated Fe/S redox reactions and changes in environmental conditions(pH and oxidation-reduction potential).However,their combined impacts on arsenic speciation transformation remain poorly ***,we explored arsenic transformation and immobilization during pyrite dissolution mediated by AMD enrichment culture under different acidic pH *** results for incubation and mineralogical transformation of solid residues show that in the presence of AMD enrichment culture,pH 2.0,2.5,and 3.0 are more conducive to the formation of jarosites and ferric arsenate,which could immobilize high quantities of dissolved arsenic by adsorption and *** pH conditions significantly affect the initial adsorption of microbial cells to the minerals and the evolution of microbial community structure,further infuencing the biodissolution of pyrite and the release and oxidation process of Fe/*** results of Fe/S/As speciation transformation of the solid residues show that the transformation of Fe,S,and As in solution is mainly regulated by pH and potential values,which imposed significantly different effects on the formation of secondary minerals and thus arsenic oxidation and *** above results indicated that arsenic transformation is closely related to the Fe/S oxidation associated with pyrite bio-oxidation,and this correlation is critically regulated by the pH conditions of the system.

关键词： Acid mine drainage(AMD) pH conditions Fe/S/As speciation transformation Microbial community structure

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燃气轮机叶片快速熔模铸造工艺优化

机械研究与应用 2024年第2期37卷 7-9,17页

作者：刘树文傅骏魏灵玥杨艳萍徐光利孙航博西安阎良国家航空高技术产业基地管理委员会陕西西安710000 四川工程职业技术学院材料工程系四川德阳618000 成都航飞航空机械设备制造有限公司四川成都610000 西安博胜航空装备有限公司陕西西安710000

针对传统熔模铸造工艺在确定压型尺寸时需要反复多次试验所带来的时间长、成本高问题,进行了叶片快速熔模铸造方法的研究。该方法采用ABS打印燃气轮机叶片,并通过粘接蜡质浇注系统组成熔模模组。经5层挂砂后将失蜡、焙烧后的铸造型壳浇... 详细信息

针对传统熔模铸造工艺在确定压型尺寸时需要反复多次试验所带来的时间长、成本高问题,进行了叶片快速熔模铸造方法的研究。该方法采用ABS打印燃气轮机叶片,并通过粘接蜡质浇注系统组成熔模模组。经5层挂砂后将失蜡、焙烧后的铸造型壳浇注金属,获得了叶片铸件。同时,针对生产过程中的型壳破裂建立了变形协调方程,应用有限元软件分析获得了铸件和型壳的应力等效应力云图,提出了优化措施,最终获得了优质铸件。

关键词：快速熔模铸造 3D打印有限元分析热应力