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Carbetocin for the prevention of postpartum hemorrhage:a systematic review and meta-analysis of randomized controlled trials

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Carbetocin for the prevention of postpartum hemorrhage:a sys...

Mapping the antiparallel aligned domain rotation by microwave excitation

2015年泛长三角围产医学学术年会暨浙江省围产医学学术年会

作者： Bohong Jin Yongming Du Fubin Zhang Kemei Zhang Lulu Wang lining cui Department of Obstetrics & Gynecology Ningbo First Hospital

Objective To compare the efficacy and safety profile of carbetocin with other uterotonic agents in preventing postpartum *** PubMed,Web of Science,Scopus and EBSCOhost were searched for relevant randomized controlled trials published until September *** Carbetocin was associated with a significantly reduced need for additional uterotonic agents(RR=0.68,95%CI:0.55-0.84,I2=4%)compared with oxytocin in women following caesarean ***,with re-

关键词： Carbetocin meta-analysis postpartum hemorrhage systematic review uterotonic agent

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Chinese Physics B 2024年第9期33卷 599-605页

作者： Jing Zhang Yuanzhi cui Xiaoyu Wang Chuang Wang Mengchen Liu Jie Xu Kai Li Yunhe Zhao Zhenyan Lu lining Pan Chendong Jin Qingfang Liu Jianbo Wang Derang Cao College of Physics Qingdao UniversityQingdao 266071China National Demonstration Center for Experimental Applied Physics Education Qingdao UniversityQingdao 266071China SKLSM Institute of SemiconductorsChinese Academy of SciencesBeijing 100083China College of Chemistry Chemical Engineering and Resource UtilizationNortheast Forestry UniversityHarbin 150040China Hunan Provincial Key Laboratory of Intelligent Sensors and Advanced Sensor Materials School of Physics and ElectronicsHunan University of Science and TechnologyXiangtan 411201China CAS Key Laboratory of Magnetic Materials and Devices Ningbo Institute of Materials Technology and EngineeringChinese Academy of SciencesNingbo 315201China Key Laboratory of Optic-Electronic Information and Materials of Hebei Province Research Center for Computational PhysicsCollege of Physics Science and TechnologyHebei UniversityBaoding 071002China Key Laboratory for Magnetism and Magnetic Materials of Ministry of Education Lanzhou UniversityLanzhou 730000China Key Laboratory of Special Functional Materials and Structural Design Ministry of EducationLanzhou UniversityLanzhou 730000China

The evolution process of magnetic domains in response to external fields is crucial for the modern understanding and application of *** this study,we investigated the domain rotation in stripe domain films of varying thicknesses by examining their response to microwave excitation in four different *** resonance spectra indicate that the rotation field of stripe domain film under an applied magnetic field approaches the field where the resonance mode of sample *** saturation field of the stripe domain film corresponds to the field where the resonance mode disappears when measured in the stripe direction parallel to the microwave magnetic *** results are reproducible and consistent with micromagnetic simulations,providing additional approaches and techniques for comprehending the microscopic mechanisms of magnetic domains and characterizing their rotation.

关键词： stripe domain magnetic film microwave excitation micromagnetic simulation

子宫肌瘤剔除术与子宫切除术对子宫肌瘤患者卵巢功能影响的对照评价

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中国基层医药 2018年第3期25卷 348-351页

作者：邢妍崔李宁宁波市第一医院妇科浙江省宁波315010

目的观察并探讨子宫肌瘤剔除术（LSHM）与子宫切除术（TH）对子宫肌瘤（UF）患者卵巢功能的影响.方法选择接受手术治疗的UF患者96例,采用随机数字表法将患者分为观察组和对照组,各48例.观察组接受LSHM手术;而对照组接受TH手术.测定两... 详细信息

目的观察并探讨子宫肌瘤剔除术（LSHM）与子宫切除术（TH）对子宫肌瘤（UF）患者卵巢功能的影响.方法选择接受手术治疗的UF患者96例,采用随机数字表法将患者分为观察组和对照组,各48例.观察组接受LSHM手术;而对照组接受TH手术.测定两组手术前后雌二醇（E2）、AMH、卵泡刺激素（FSH）和黄体生成素（LH）水平,统计两组患者的手术时间、术中失血量、肛门排气时间和平均住院时间及围绝经期症状发生比例.结果观察组手术时间、术中失血量、肛门排气时间和平均住院时间分别为（65.6±13.2）min、（82.4±6.2）mL、（20.4±4.6）h和（5.2±1.2）d,对照组为（76.5±15.6）min、（118.6±8.9）mL、（34.2±5.4）h和（8.3±1.2）d,两组差异均有统计学意义（t=3.695,P=0.00;t=23.120,P=0.00;t=13.482,P=0.00;t=12.650,P=0.00）;两组术前E2、FSH、LH和AMH水平相比,差异无统计学意义（P〉0.05）;术后,观察组E2、AMH明显高于对照组（t=22.630,P=0.00;t=5.910,P=0.00）,而FSH和LH则明显低于对照组（t=6.853,P=0.00;t=7.024,P=0.00）;观察组围绝经期症状发生率为8.3％（4/48）,对照组为29.2％（14/48）,观察组明显低于对照组（χ^2=6.838,P=0.00）.结论对UF患者实施LSHM有利于保护患者的卵巢功能,术后恢复更快,值得在临床上进一步推广.

关键词：子宫肌瘤剔除术子宫切除术平滑肌瘤卵巢功能

Experimental study on the effect of flexible joints of a deep-buried tunnel across an active fault under high in-situ stress conditions

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Underground Space 2024年第6期19卷 189-207页

作者： Jiawei Zhang Zhen cui Qian Sheng Wanhua Zhao Liang Song State Key Laboratory of Geomechanics and Geotechnical Engineering Institute of Rock and Soil MechanicsChinese Academy of SciencesWuhan 430071China School of Civil Engineering and Architecture Wuhan Polytechnic UniversityWuhan 430023China

During dislocation,a tunnel crossing the active fault will be damaged to varying degrees due to its permanent stratum *** previous studies did not consider the influence of the tunnel’s deep burial and the high in-situ stress,so the results were not entirely *** this paper,the necessity of solving the anti-dislocation problem of deep-buried tunnels is systemically *** the model test of tunnels across active faults,the differences in failures between deep-buried tunnels and shallow-buried tunnels were compared,and the dislocation test of deep-buried segmental tunnels was carried out to analyze the external stress change,lining strain,and failure mode of *** results are as follows.(1)The overall deformation of deep-buried and shallow-buried tunnels is both *** failure mode of deep-buried tunnels is primarily characterized by shear and tensile failure,resulting in significant compressive deformation and a larger damaged *** contrast,shallow-buried tunnels mainly experience shear failure,with the tunnel being sheared apart at the fault crossing,leading to more severe damage.(2)After the segmental structure design of the deep-buried tunnel,the‘‘S”deformation pattern is transformed into a‘‘ladder”pattern,and the strain of the tunnel and the peak stress of the external rock mass are reduced;therefore,damages are significantly mitigated.(3)Through the analysis of the distribution of cracks in the tunnel lining,it is found that the tunnel without a segmental structure design has suffered from penetrating failure and that cracks affect the entire *** cracks in a flexible segmental tunnel affect about 66.6%of the entire length of the tunnel,and cracks in a tunnel with a short segmental tunnel only affect about 33.3%of the entire length of the ***,a deep-buried tunnel with a short segmental tunnel can yield a better anti-dislocation effect.(4)By comparing the shallow-buried segmental tunnel in previous

关键词： Tunnel project Crossing active fault High in-situ stress Segmental structure design Flexible joint

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独柱墩弯箱梁桥抗倾覆验算分析及加固改造

现代交通技术 2017年第1期14卷 34-37页

作者：崔力宁马新勇中交第一公路勘察设计研究院有限公司陕西西安710075

独柱墩弯箱梁桥在重车偏载作用下存在倾覆失稳的可能性。文章针对广州某立交F匝道桥,利用Midas/Civil对其抗倾覆稳定性进行分析,并给出针对性的加固改造措施,其荷载选取、验算准则和加固方案可供类似桥梁工程加固参考。

关键词：桥梁工程独柱墩弯箱梁抗倾覆稳定性加固改造

基于桥梁改造的新旧混凝土结构植筋加固粘接技术研究

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粘接 2023年第11期50卷 98-101页

作者：项沛崔力宁杨彤西安铁路职业技术学院陕西西安710026 中交第一公路勘察设计研究院有限公司陕西西安710000

随着桥梁承受荷载的增加与老化程度的加深,一些桥梁已成危桥,其使用安全性得不到保障,因此对其进行加固与改造是非常必要的。植筋技术是一种在混凝土结构中植入钢筋进行粘接加固的桥梁改造技术,在实际加固工程中较受欢迎。阐述了旧危桥... 详细信息

随着桥梁承受荷载的增加与老化程度的加深,一些桥梁已成危桥,其使用安全性得不到保障,因此对其进行加固与改造是非常必要的。植筋技术是一种在混凝土结构中植入钢筋进行粘接加固的桥梁改造技术,在实际加固工程中较受欢迎。阐述了旧危桥梁新旧混凝土结构加固设计的基本要求与方法,植筋技术原理与加固步骤,探究了新旧混凝土结构植筋技术加固实践,并对该技术应用下新旧混凝土结合面的抗剪强度进行实验设计与测试,提出旧危桥梁加固改造措施和建议。

关键词：桥梁改造新旧混凝土植筋技术抗剪强度粘接加固

Aseismic performances of constrained damping lining structures made of rubber-sand-concrete

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Journal of Rock Mechanics and Geotechnical Engineering 2024年第5期16卷 1522-1537页

作者： Xiancheng Mei Qian Sheng Jian Chen Zhen cui Jianhe Li Chuanqi Li Daniel Dias State Key Laboratory of Geomechanics and Geotechnical Engineering Institute of Rock and Soil MechanicsChinese Academy of SciencesWuhan430071China University of Chinese Academy of Sciences Beijing100049China Key Laboratory of Water Grid Project and Regulation of Ministry of Water Resources Changjiang Institute of SurveyPlanningDesign and ResearchWuhan430010China Laboratory 3SR CNRS UMR 5521Grenoble Alpes UniversityGrenoble38000France School of Automotive and Transportation Engineering Hefei University of TechnologyHefei23009China

Flexible damping technology considering aseismic materials and aseismic structures seems be a good solution for engineering *** this study,a constrained damping structure for underground tunnel lining,using a rubber-sand-concrete(RSC)as the aseismic material,is *** aseismic performances of constrained damping structure were investigated by a series of hammer impact *** damping layer thickness and shape effects on the aseismic performance such as effective duration and acceleration amplitude of time-domain analysis,composite loss factor and damping ratio of the transfer function analysis,and total vibration level of octave spectrum analysis were *** hammer impact tests revealed that the relationship between the aseismic performance and damping layer thickness was not linear,and that the hollow damping layer had a better aseismic performance than the flat damping layer *** aseismic performances of constrained damping structure under different seismicity magnitudes and geological conditions were *** effects of the peak ground acceleration(PGA)and tunnel overburden depth on the aseismic performances such as the maximum principal stress and equivalent plastic strain(PEEQ)were *** numerical results show the constrained damping structure proposed in this paper has a good aseismic performance,with PGA in the range(0.2-1.2)g and tunnel overburden depth in the range of 0-300 m.

关键词： Constrained damping structure Aseismic performance Hammer impact tests Damping layer Peak ground acceleration Overburden depth

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人工流产术后放置宫喜环与爱母环的效果对比

中国性科学 2014年第8期23卷 82-84页

作者：徐菊玲费小阳崔李宁永康市计划生育宣传技术指导站浙江金华321300 杭州市第一人民医院妇产科杭州310006 宁波市第一医院妇产科浙江宁波315010

目的:探讨人工流产术后即时放置宫喜宫腔型宫内节育器(宫喜环)的避孕效果及安全性。方法:选取2012年1月至2013年1月在本站行人工流产术后放置宫喜环的45例育龄妇女为观察组,另选取同期行人工流产术后放置爱母牌宫内节育器(爱母环)的45... 详细信息

目的:探讨人工流产术后即时放置宫喜宫腔型宫内节育器(宫喜环)的避孕效果及安全性。方法:选取2012年1月至2013年1月在本站行人工流产术后放置宫喜环的45例育龄妇女为观察组,另选取同期行人工流产术后放置爱母牌宫内节育器(爱母环)的45例育龄妇女为对照组。对两组患者随访1年,记录两组患者置环后月经量、腹部疼痛、白带情况。结果:观察组患者脱落、带器妊娠、因不适取出所导致的停用率显著低于对照组,而续用率则显著高于对照组,差异有统计学意义(P<0.05)。观察组置环后6个月后月经量增多、白带增多、腹部疼痛的情况较对照组少,差异有统计学意义(P<0.05)。结论:宫喜环柔软程度高,易于弯曲,对人流术后子宫修复影响较小,避孕效果良好,值得临床应用。

关键词：人工流产宫喜宫腔型宫内节育器月经异常

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含润滑移动载荷系统的三维动力学分析

噪声与振动控制 2024年第1期44卷 22-28页

作者：刘硕张博宏崔毅高礼宁李玉娟王子敬上海交通大学新能源动力研究所上海200240 上海交通大学动力机械与工程教育部重点实验室上海200240 潍柴动力股份有限公司山东潍坊261001

含润滑的移动载荷系统在实际工程中十分常见,而这种系统的动力学特性研究却鲜有报道。因此,提出一种三维润滑振动耦合动力学模型,用于分析含润滑移动载荷系统在激励下的结构振动响应。三维润滑振动耦合模型分别由润滑模型和多柔体动力... 详细信息

含润滑的移动载荷系统在实际工程中十分常见,而这种系统的动力学特性研究却鲜有报道。因此,提出一种三维润滑振动耦合动力学模型,用于分析含润滑移动载荷系统在激励下的结构振动响应。三维润滑振动耦合模型分别由润滑模型和多柔体动力学模型组成,通过将两模型计算结果相互传递来实现耦合,并通过迭代算法求解。此外,设计并制造相应实验装置。通过将根据模型计算和实验测量得到的结构在激励下的振动响应进行对比,以验证模型的准确性。对比结果显示:采用该模型能够准确预测结构的阻尼振动周期与振幅衰减时间,振动幅值相差不超过2.22 dB,可以满足工程精度要求。最后,利用三维润滑振动耦合模型分析移动载荷速度对结构振动的影响,结果表明:随着载荷移动速度增加,结构阻尼振动最大加速度幅值基本不变,但阻尼振动衰减时间大幅减小。

关键词：振动与波移动载荷润滑动力学建模实验验证