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通痹益脑汤联合颈部夹脊穴电针治疗脑梗死后眩晕的应用研究

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中国疗养医学 2024年第5期33卷 104-107页

作者：王庆红王倩倩通许县中医院中医科河南开封475400 开封市中医院中医针灸科河南开封475000

目的观察通痹益脑汤联合颈部夹脊穴电针疗法治疗脑梗死后眩晕的临床效果。方法选取通许县中医院2021年6月至2023年8月收治的108例脑梗死后眩晕患者,应用电脑随机分组法将入组患者分别列为电针组和联合组,各54例。电针组采用颈部夹脊穴... 详细信息

目的观察通痹益脑汤联合颈部夹脊穴电针疗法治疗脑梗死后眩晕的临床效果。方法选取通许县中医院2021年6月至2023年8月收治的108例脑梗死后眩晕患者,应用电脑随机分组法将入组患者分别列为电针组和联合组,各54例。电针组采用颈部夹脊穴电针治疗,联合组在电针组的治疗基础上,应用通痹益脑汤配合治疗,比较两组患者的证候积分、脑血流动力学、脑血液流变学、血管内皮功能。结果在不同治疗方案下,联合组眩晕头晕、胸闷恶心、肌肤甲错等证候积分与基底动脉、椎动脉的搏动指数(PI)均低于电针组;基底动脉、椎动脉的平均血流速度(Vm)均高于电针组;联合组的脑血管血浆黏度、高切黏度、低切黏度、同型半胱氨酸(HCY)、血管紧张素Ⅱ(AngⅡ)均低于电针组,差异有统计学意义(P<0.05)。结论通痹益脑汤联合颈部夹脊穴电针疗法治疗脑梗死后眩晕能有效改善患者的临床证候,对促进脑血流动力学、血液流变学、血管内皮功能恢复均有积极意义。

关键词：脑梗死后眩晕通痹益脑汤颈部夹脊穴电针疗法脑血流参数

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硫酸法生产钛白能耗分析及节能降耗建议

广州化工 2024年第7期52卷 179-181,184页

作者：王青鸿田从学刘亚东攀枝花学院钒钛学院四川攀枝花617000

钛白粉作为最佳的白色颜料,应用广泛,我国是最大的钛白粉生产国,主要以硫酸法工艺为主,但存在能耗高等问题。本文简述了硫酸法钛白生产工艺现状,对其生产成本和能源消耗情况进行了系统的分析,并从电力能耗、燃料能耗、蒸汽能耗三方面指... 详细信息

钛白粉作为最佳的白色颜料,应用广泛,我国是最大的钛白粉生产国,主要以硫酸法工艺为主,但存在能耗高等问题。本文简述了硫酸法钛白生产工艺现状,对其生产成本和能源消耗情况进行了系统的分析,并从电力能耗、燃料能耗、蒸汽能耗三方面指出了现行工艺存在的问题,从新技术、新工艺、新装备及新方法等角度提出节能降耗的对策建议,为相关钛白粉企业开展节能降耗、绿色发展提供有益参考。

关键词：硫酸法钛白粉生产能耗降耗成本分析

嵌岩桩水平承载力地基反力Matlock法分析

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科学技术与工程 2024年第1期24卷 320-326页

作者：赵学亮李宇黄钺田伟辉王洪庆何润财东南大学混凝土及预应力混凝土结构教育部重点实验室南京211189 广州市市政工程设计研究总院有限公司广州510095 中国电建集团西北勘测设计研究院有限公司西安710065 中国能源建设集团广东省电力设计研究院有限公司广州510663

嵌岩桩在海上风电、跨海大桥等结构中的应用十分广泛,但在嵌岩桩水平承载特性方面的研究仍有较多不足。弹性地基反力法中的Matlock法在中国是用于计算水平承载桩承载力时应用最多的方法,但地基反力Matlock法针对嵌岩桩缺少合理的取值方... 详细信息

嵌岩桩在海上风电、跨海大桥等结构中的应用十分广泛,但在嵌岩桩水平承载特性方面的研究仍有较多不足。弹性地基反力法中的Matlock法在中国是用于计算水平承载桩承载力时应用最多的方法,但地基反力Matlock法针对嵌岩桩缺少合理的取值方法。基于现场试验数据建立并验证有限差分数值模型,通过数值模拟与参数分析,研究了岩体力学参数和桩基参数等因素对桩岩相互作用的影响,提出了Matlock法中地基反力系数比例系数的拟合计算公式。通过现场试验数据对提出的方法进行了验证,结果表明计算结果与实际情况较为相符,与其他方法比较,所提出的修正Matlock法相对非线性的p-y曲线法具有取值计算较为简便的优势。

关键词：嵌岩桩水平承载力数值分析地基反力Matlock法变形特征桩岩相互作用

Vertically grown MoS_(2)nanosheets on graphene with defect-rich structure for efficient sodium storage

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Rare Metals 2024年第3期43卷 1062-1071页

作者： Ying wang Jia-Peng He Han-qing Pan qing-Peng wang Lei Zhang Yong-Chang Liu qing-hong wang School of Chemistry&Materials Science Jiangsu Key Laboratory of Green Synthetic Chemistry for Functional MaterialsJiangsu Normal UniversityXuzhou221116China Institute of Biopharmaceutical Research Liaocheng UniversityLiaocheng252059China Beijing Advanced Innovation Center for Materials Genome Engineering Institute for Advanced Materials and TechnologyState Key Laboratory for Advanced Metals and MaterialsUniversity of Science and Technology BeijingBeijing100083China Centre for Catalysis and Clean Energy Gold Coast CampusGriffith UniversityGold CoastQLD4222Australia

The synthesis of a perpendicular growth structure of MoS_(2)nanosheets on graphene for efficient sodium storage is challenging yet ideal due to the benefits of open ion diffusion channels and high electronic *** this study,we have successfully fabricated a novel structure of vertical MoS_(2)nanosheets on graphene,with ZnS nanoparticles serving as bonding points(MoS_(2)/ZnS/G),through a facile hydrothermal *** the synthesis process,Zn^(2+)not only acts as a landing site for the vertical growth of MoS_(2)nanosheets but also triggers the formation of a defect-rich structure in the final *** unique architecture of MoS_(2)/ZnS/G effectively combines the advantages of a vertically aligned geometry and a defectrich structure for energy *** resulting structure displays shortened transport paths for electrons/ions,enhanced conductivity,improved structural integrity,and an increased number of active sites for promising electrochemical *** expected,when used as anode for sodium-ion batteries,the as-synthesize d MoS_(2)/ZnS/G exhibits excellent rate capability(high capacity of 298 mAh·g^(-1)at 5 A·g^(-1))and good cycling stability(a capacity decay of 0.056%per cycle after 500 cycles at 1 A·g^(-1)).According to the kinetic investigations,the electrochemical process of the MoS_(2)/ZnS/G sample is primarily governe d by a pseudocapacitive behavior,which enhances the charge/discharge kinetics and allows the MoS_(2)/ZnS/G structure to remain intact during cycling.

关键词： MoS_(2) Perpendicular growth Graphene Sodium storage Electrochemical performance

Unraveling role of double-exchange interaction in electrochemical water oxidation by external magnetic field

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Rare Metals 2024年第1期43卷 289-297页

作者： Jun Li Jun-Ming Li hong hong Dong-Xue Liu qing-Qi Cao Dun-Hui wang National Laboratory of Solid State Microstructures and Jiangsu Provincial Key Laboratory for Nanotechnology Nanjing UniversityNanjing 210093China School of Electronics and Information Hangzhou Dianzi UniversityHangzhou 310018China

Double-exchange(DE) interaction plays an important role in electrocatalytic oxygen evolution reaction(OER).However,precise achievement of DE interaction often requires foreign dopants or vacancy engineering,leading to destabilization of the catalysts and deterioration of *** contrast,the utilization of environmentally friendly,contactless,and continuously adjustable magnetic fields to study the OER process is profitable to avoid aforementioned interference factors and further elucidate the direct relationship_(0.5)between DE interaction and OER ***,by using cobalt hydroxide carbonate(Co(OH)(CO_(3))·xH_(2)O,CoHC) nanostructures as a proof-of-concept study,external magnetic fields are carefully implemented to verify the role of DE interaction during water oxidation *** studies reveal that external magnetic fields effectively enhance the reaction rate of the catalyst,the overpotential decreases from 386 to 355 mV(100 mA·cm^(-2)),while Tafel slopes drastically decline from 93 to 67 mV·dec^(-1)(1.0 T).Moreover,magnetic field increment exhibits robust *** in situ Raman and impedance measurements under external field,it can be found that magnetic field promotes the electron migration between Co^(2+) and Co^(3+) in the CoHC catalysts with the assistance of DE interactions,thus boosting the OER efficiency.

关键词： Magnetic field Double-exchange(DE)interaction Electrocatalysis Oxygen evolution reaction(OER) Cobalt hydroxide carbonate

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晚期上皮性卵巢癌误诊为盆腔结核一例

国际妇产科学杂志 2024年第1期51卷 78-81页

作者：盖敏雪王洪庆王玉佳李玲玲李长忠山东大学济南250000 山东省立医院齐鲁医药学院山东省曹县县立医院北京大学深圳医院妇产科

盆腔结核是由结核分枝杆菌引起的女性盆腔炎症,是慢性盆腔炎和不孕症的常见原因。由于盆腔结核可引起腹盆腔钝性疼痛、腹胀等特征与晚期上皮性卵巢癌相似,加之肺外结核没有特异的临床特征或影像学表现可以明确诊断,因此盆腔腹膜结核很... 详细信息

盆腔结核是由结核分枝杆菌引起的女性盆腔炎症,是慢性盆腔炎和不孕症的常见原因。由于盆腔结核可引起腹盆腔钝性疼痛、腹胀等特征与晚期上皮性卵巢癌相似,加之肺外结核没有特异的临床特征或影像学表现可以明确诊断,因此盆腔腹膜结核很容易与腹膜癌和晚期上皮性卵巢癌混淆。分析1例晚期上皮性卵巢癌患者,因卵巢占位组织穿刺病理及腹水脱落细胞学检查均未查见肿瘤细胞,遂行结核鉴别检查,患者结核菌素试验和结核分枝杆菌γ干扰素均为阳性,诊断为盆腔结核,后经病理证实为上皮性卵巢癌。对本病例的诊治过程进行总结,以期为临床处理晚期上皮性卵巢癌与盆腔结核诊断困难的病例积累一定经验。

关键词：卵巢肿瘤盆腔炎性疾病结核误诊诊断,鉴别病例报告

Microstructural Evolutions and Mechanical Properties of Energetic Al_(1) (TiZrNbTaMoCr)_(15) High-Entropy Alloys

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Acta Metallurgica Sinica(English Letters) 2024年第4期37卷 620-632页

作者： Xuan-hong Cai Zhen-Hua wang Ben Niu Jin-Feng Li qing wang Show authors Key Laboratory of Materials Modification By Laser Ion and Electron Beams(Ministry of Education)Engineering Research Center of High Entropy Alloy Materials(Liaoning Province)School of Materials Science and EngineeringDalian University of TechnologyDalian116024China Institute of Materials China Academy of Engineering PhysicsMianyang621908China

The present study focuses on investigating the microstructural evolutions and mechanical properties of energetic Al_(1)(TiZrNbTaMoCr)_(15) refractory high-entropy alloys with the different heat treatments at low Al content state. It is found that even with a reduction in the Al content, the strength of these alloys remains unaffected at room temperature and high temperature, while the plasticity improves significantly. In particular, the coherent BCC/B_(2) microstructure with needle-like B_(2) nanoprecipitates dispersed into the BCC matrix is formed in 873 K-aged Al_(1)Ti_(6)Zr_(2)Nb_(3)Ta_(3)Mo_(0.5)Cr_(0.5) alloy. Therefore, this alloy exhibits the highest compression yield strength (σ_(YS) = 1333 and 717 MPa) at room temperature and 1073 K, respectively. After 973 K-aged, the coherent BCC/B_(2) microstructure underwent destabilization, and the B_(2) phase transforms into the brittle Zr5Al3 phase which then coarsens and dominates the microstructure of S3-AlTa_(3) alloy after 1073 K-aged. Moreover, these current alloys exhibit exceptionally high theoretical exothermic enthalpy (ΔH), surpassing 11606 J·g^(−1), which highlights their significant potential as innovative high-performance energetic structural materials.

关键词： Refractory high-entropy alloy Coherent microstructure Mechanical property Exothermic enthalpy

Significantly Enhanced Melt Memory Effect of Metallocene-made Isotactic Polypropylene Containing Talc

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Chinese Journal of Polymer Science 2024年第2期42卷 213-222,I0008页

作者： hong-Wen Sun Fu-Shan wang Yan Gao Fu-qing Wei Jia-Chun Feng State Key Laboratory of Molecular Engineering of Polymers Department of Macromolecular ScienceFudan UniversityShanghai200433China Lanzhou Petrochemical Corporation of PetroChina Lanzhou730060China Lanzhou Petrochemical Research Center Petrochemical Research Institute of PetroChinaLanzhou730060China

The melt memory effect is a widely observed phenomenon in semi-crystalline polymers. In practical applications, various additives are usually introduced into polymers, which may affect their melt memory behavior. In this work, the effect of talc on the melt memory effect of metallocene-made isotactic polypropylene(M-PP) was investigated in detail by using the differential scanning calorimetry. The results indicated that the introduction of talc significantly strengthened the melt memory effect of M-PP. Specifically, the upper limit temperature of Domain II increased from 161 ℃ to 174 ℃, resulting in a substantial widening of the temperature range of Domain IIa from 1 ℃ to 14 ℃. Analysis of the crystal orientation of the M-PP containing talc cooled from various Ts suggested that the remarkably enhanced melt memory effect could be ascribed to the stabilization of oriented nuclei facilitated by talc. This stabilizing effect was likely attributable to the prefreezing effect or the sorption interaction between talc and the M-PP chains.

关键词： Metallocene-made isotactic polypropylene Talc Melt memory effect Crystal orientation

Experimental research on the launching system of auxiliary charge with filter cartridge structure

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Defence Technology（防务技术） 2024年第1期31卷 41-48页

作者： Zi-Jun Chen Ze He hong-Hao Ma Lu-qing wang Zhao-Wu Shen CAS Key Laboratory of Mechanical Behavior and Design of Materials Department of Modern MechanicsUniversity of Science and Technology of ChinaHefeiAnhui230027PR China State Key Laboratory of Fire Science University of Science and Technology of ChinaHefeiAnhui230026PR China

A launching system with a filter cartridge structure was proposed to improve the muzzle velocity of the *** combustion chamber of the launching system is divided into two fixed chambers,one is located in the breech chamber,and the other is arranged in the *** breech chamber charge was ignited first,and the charges in the auxiliary chambers were ignited by the high-temperature,highpressure combustible gas trailing the *** this way,the combustible gas in the auxiliary chambers could compensate for the pressure drop caused by the movement of the *** proposed device features the advantage of launching a projectile with high muzzle velocity without exceeding the maximum pressure in the *** order to obtain some internal ballistic characteristics of the launch system,some critical structure,such as the length of the filter cartridge auxiliary charge,the combustion degree of the propellant in the chamber,and the length of the barrel,are *** experimental results show that with the increased auxiliary charge length,a pressure plateau or even a secondary peak pressure can be formed,which is less than the peak *** projectile velocity increased by 23.57%,14.64%,and 7.65%when the diaphragm thickness was 0 mm,1 mm,and2 mm,*** muzzle velocity of the projectile can be increased by 13.42%by increasing the length of the *** the same charge condition,with the increase of barrel length,the energy utilization rate of propellant increases by 28.64%.

关键词： Interior ballistics Charge structures Launch system Charge design