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A safe strategy for anesthesia induction and airway management in morbidly obese patients

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Chinese Medical Journal 2019年第14期132卷 1747-1748页

作者： hai-xia wang Lei Wan Ming Tian Fu-Shan Xue Department of Anesthesiology Beijing Friendship HospitalCapital Medical UniversityBeijing 100050China

To the Editor:Morbidly obese patients are known to be difficult for facemask ventilation and tracheal intubation,leading to an increased risk for a "cannot intubate cannot ventilate" *** tracheal intubation is often considered as one of the safest strategies for anesthesia induction and airway management in patients with known or predicted difficult airways,but the technique itself is an uncomfortable procedure.

关键词： anesthesia induction airway management morbidly obese patients

Size Segregation and Super-Domain Mediated by Dipolar Interactions in 3-D Iron Nanoparticle Assemblies

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Chinese Physics Letters 2012年第4期29卷 192-194页

作者： SI Ping-Zhan wang hai-xia JIANG Wei CHEN Chun-Qiang HU Xiu-Kun LIU Jin-Jun LEE Jung-Goo CHOI Chul-Jin School of Materials Science and Engineering China Jiliang UniversityHangzhou 310018 Faculty of Materials Science and Chemical Engineering Ningbo UniversityNingbo 315211 Korea Institute of Materials Science ChangwonGyeongnam641-831R.Korea

We report the phenomenon of size segregation and the experimental evidence for the presence of correlated areas mediated by dipolar interactions in three-dimensional Fe nanoparticle *** nanoparticles dispersed in ethanol assemble into tabular whiskers (8 μm × 40 μm in cross section with lengths up to 1 0 cm) due to dipolar *** force microscopy observations on iron nanoparticle compact assemblies prove the local magnetic correlation of the Fe nanoparticles due to dipolar coupling and the formation of domain-like structures in expanded *** measurements show that the coercivity and the low field magnetic susceptibility of the Fe nanoparticle assemblies increase while the saturation magnetization decreases with the increasing interparticle distance.

关键词： nanoparticles particle nanoparticle

SOFC阴极材料La_(0.6)Sr_(0.4)CoO_(3-δ)的甘氨酸-硝酸盐法合成与表征

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功能材料 2010年第3期41卷 397-400页

作者：王海霞屠恒勇上海交通大学机械与动力工程学院燃料电池研究所上海200240

通过甘氨酸-硝酸盐法制备出均质纳米粉体La0.6Sr0.4CoO3-δ(LSC),并采用TGA、XRD、BET和SEM等手段进行了表征;同时研究了600～800℃以LSC为阴极材料的单电池的输出性能。结果表明,产物在800℃时已形成钙钛矿相,且具有较高的比表面积,95... 详细信息

通过甘氨酸-硝酸盐法制备出均质纳米粉体La0.6Sr0.4CoO3-δ(LSC),并采用TGA、XRD、BET和SEM等手段进行了表征;同时研究了600～800℃以LSC为阴极材料的单电池的输出性能。结果表明,产物在800℃时已形成钙钛矿相,且具有较高的比表面积,950℃为最佳烧结温度,可获得纳米级多孔显微结构,所得单电池输出性能显著提高;当电压为0.7V时,电池功率密度增幅随温度增加非常明显。

关键词：固体氧化物燃料电池 LSC阴极甘氨酸-硝酸盐法性能测试

A feasibility study of jaw thrust as an indicator assessing adequate depth of anesthesia for insertion of supraglottic airway device in morbidly obese patients

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Chinese Medical Journal 2019年第18期132卷 2185-2191页

作者： Lei Wan Liu-Jia-Zi Shao Yang Liu hai-xia wang Fu-Shan Xue Ming Tian Department of Anesthesiology Beijing Friendship Hospital Capital Medical University Beijing 100050 China Department of General Surgery Beijing Friendship Hospital Capital Medical University Beijing 100050 China

Background:Jaw thrust has been proven as a useful test determining adequate depth of anesthesia for successful insertion of supraglottic airway device (SAD) in normal adults and children receiving intra-venous or inhalational anesthesia *** prospective observational study aimed to determine the feasibility and validity of this test when using as an indicator assessing adequate depth of anesthesia for successful insertion of SAD in spontaneously breathing morbidly obese patients receiving sevoflurane inhalational ***:Thirty morbidly obese patients with a body mass index 40 to 73 kg/m2 undergoing bariatric surgery in Beijing Friendship Hospital from October 2018 to January 2019 were included in this *** adequate pre-oxygenation,5% sevoflurane was inhaled and inhalational concentration of sevoflurane was increased by 1% every 2 *** motor responses to jaw thrust disappeared,a SAD was inserted and insertion conditions were *** anatomic position of SAD was assessed using a fiberoptic ***:The SAD was successfully inserted at the first attempt in all *** conditions of SAD were excellent in nine patients (30%) and good in 21 patients (70%),*** fiberoptic views of SAD position were adequate in 28 patients (93%).Conclusions:Jaw thrust test is a reliable indicator determining adequate anesthesia depth of sevoflurane inhalational induction for successful insertion of SAD in spontaneously breathing morbidly obese patients.

关键词： Obesity Inhalational induction Sevoflurane Supraglottic airway device Jaw thrust test

Potential dependence in electrocatalysis: a theoretical perspective

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Science China Chemistry 2025年第1期 21-25页

作者： Leyu Liu Zhaoming xia Zeyu wang Yinjuan Chen hai xiao Department of Chemistry Tsinghua University Fundamental Science Center of Rare Earths Ganjiang Innovation Academy Chinese Academy of Sciences Key Laboratory of Advanced Catalytic Materials and Technology Advanced Catalysis and Green Manufacturing Collaborative Innovation Center Changzhou University

Electrocatalysis is a key technology for the new energy era and sustainable development, serving as the interface for interconversion of electrical and chemical energies, which spans a wide spectrum of applications in sustainable energy and environmental engineering. Electrocatalytic reactions including electrochemical CO2reduction reaction （eCO2RR）, hydrogen evolution reaction （HER）, and oxygen evolution/reduction reactions （OER/ORR）, hold essential promise for renewable energy technologies as well as complement the biogeochemical carbon and oxygen cycles.

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带乘性噪声和延时观测广义系统的多步最优预测器

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控制理论与应用 2015年第6期32卷 787-793页

作者：卢晓王海霞吴帆山东科技大学山东省机器人与智能技术重点实验室

本文研究了状态空间描述的离散广义系统最优预测器的设计问题,该系统带有即时和延时观测,所有观测中带有乘性噪声.论文在两个基本假设条件下采用标准的奇异值分解方法给出了受限等价时滞系统,对于此类系统没有采用状态增广方法,而是采... 详细信息

本文研究了状态空间描述的离散广义系统最优预测器的设计问题,该系统带有即时和延时观测,所有观测中带有乘性噪声.论文在两个基本假设条件下采用标准的奇异值分解方法给出了受限等价时滞系统,对于此类系统没有采用状态增广方法,而是采用新息重组分析理论给出了多步预测器.因为延时观测的存在,所给出的多步预测器包含了两套递推的广义系统黎卡提方程.本文给出了一个数学算例验证了所提方法的正确性和有效性,并给出了四幅图片,根据算例可以看出一般情况下预测的步数越少,预测的结果越好.本文方法可以进一步来研究更复杂的一些问题,如延时广义系统的H_∞滤波和控制问题.

关键词：广义系统多步预测器延时观测乘性噪声新息重组

农村维吾尔族离婚率变动成因——以库车县牙哈镇为例

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人口与经济 2009年第1期 57-62页

作者：王海霞湖北经济学院社会科学系湖北武汉430205

全国五次人口普查资料显示,维吾尔族的离婚率(尤其是农村)在各民族中一直较高。调查和分析发现离婚率主要集中于初婚生育前,离婚率高居不下的主要原因是结婚前后女性角色地位的骤变引发的心理落差。文章探讨了在全国离婚率上升的同时,... 详细信息

全国五次人口普查资料显示,维吾尔族的离婚率(尤其是农村)在各民族中一直较高。调查和分析发现离婚率主要集中于初婚生育前,离婚率高居不下的主要原因是结婚前后女性角色地位的骤变引发的心理落差。文章探讨了在全国离婚率上升的同时,农村维吾尔族的离婚率明显下降的主要原因,在结语中预测了今后20年维吾尔族离婚率的变动趋势,指出这对改变现代中国社会的离婚问题所具有的启示。

关键词：农村维吾尔族离婚率女性家庭地位

影响新疆维吾尔族农村女性初婚年龄的因素分析

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人口与经济 2005年第5期 59-63,32页

作者：王海霞中央民族大学民族学与社会学学院北京100081

维吾尔族农村女性早婚率高,会导致早育和高离婚率等一系列后果,这些都会影响到她们的幸福感和生活质量,本文试图从客位和主位进行全方位考察,对初婚年龄的影响因素加以分析并提出可行性建议。

关键词：维吾尔族初婚年龄 “处女”情结社区情理

将薄板矩形单元扩展为厚薄板通用单元的一般方法

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工程力学 2000年第4期17卷 37-43页

作者：龙志飞王海霞中国矿业大学北京校区基础科学系北京100083

本文提出将已有的薄板矩形单元扩展为无剪切闭锁现象的厚薄板通用单元的一般方法。对于薄板极限情况，这种厚薄板通用单元自动退化为原有的薄板单元，完全无剪切闭锁现象发生。应用此法构造的两个厚薄板通用矩形单元ＡＤＳ１和ＡＤＳ２... 详细信息

本文提出将已有的薄板矩形单元扩展为无剪切闭锁现象的厚薄板通用单元的一般方法。对于薄板极限情况，这种厚薄板通用单元自动退化为原有的薄板单元，完全无剪切闭锁现象发生。应用此法构造的两个厚薄板通用矩形单元ＡＤＳ１和ＡＤＳ２自由度少，只含有角点挠度和转角，推导简明并具有一般性，能够通过分片检验。数值算例表明这两个单元对薄板和厚板都具有较高的精度，适用于实际工程计算。

关键词：有限元平板弯曲厚薄板矩形单元