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Congenital fiber-type disproportion presenting with type II respiratory failure after delivery:A case report

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World Journal of Clinical Cases 2021年第7期9卷 1748-1754页

作者： hong-mei yang Jian-Xing Guo Yi-Min yang Department of Intensive Care Unit The First Hospital of Jilin UniversityChangchun 130021Jilin ProvinceChina

BACKGROUND Congenital fiber-type disproportion(CFTD)is a form of congenital *** is rare,especially when presenting in patients with critical ***,we report a case of CFTD presenting with type II respiratory failure after delivery and provide a review of the literature on *** SUMMARY A 30-year-old woman was admitted to the obstetrics department of our hospital with premature rupture of the fetal membrane and with 7 h of regular *** delivery,the patient experienced a refractory type II respiratory *** examination along with diagnostic procedures such as electromyography and biopsy confirmed *** of invasive ventilator followed by intermittent use of noninvasive ventilator attenuated her *** patient recovered after ventilator-assisted respiration and was weaned off the noninvasive ventilator on the seventh day *** Congenital myopathy should be considered a differential diagnosis for type II respiratory failures that cannot be attributed to other diseases.

关键词： Congenital fiber-type disproportion Congenital myopathy Type II respiratory failure Delivery Systematic review Case report

The Effects of Dispersed Phase Morphology Induced by Flow on the Bulk Viscosity of HDPE/PA Blends

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Chinese Chemical Letters 2006年第11期17卷 1515-1518页

作者： hong mei yang Zhen Wei ZHANG Hart LI Qiang ZHENG Department of Polymer Science and Engineering Zhejiang University Hangzhou 310027 Key Laboratory of Macromolecular Synthesis and Functionalization Ministry of Education Zhejiang University Hangzhou 310027

The apparent shear viscosity （ηα） of a blend composed of 97 wt % high-density polyethylene （HDPE） and 3 wt % polyamide （PA-66） was measured by capillary rheometry at different shear rates, below, near and above the melting point of PA-66, i.e. 240℃, 260℃ and 280℃, respectively. At 260℃ and a high shear rate, ηα of the blend reduced abnormally; and at 260℃, was lower than that at 280℃. The images of etched surface of extrudate observed by the SEM showed different dispersed phase morphology, induced by flow at different temperatures. It is suggested that the formation of fibrillar morphology of dispersed phase is a key factor for the abnormal reduction of ηα for the HDPE/PA blend.

关键词： Viscosity reduction polyethylene polyamide droplet deformation.

Impact of proton pump inhibitors on clinical outcomes in patients after acute myocardial infarction: a propensity score analysis from China Acute Myocardial Infarction(CAMI) registry

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Journal of Geriatric Cardiology 2020年第11期17卷 659-665页

作者： Wen-Ce SHI Si-De GAO Jin-Gang yang Xiao-Xue FAN Lin NI Shu-hong SU mei YU hong-mei yang Meng-Yue YU Yue-Jin yang Department of Cardiology State Key Laboratory of Cardiovascular DiseaseFuwai HospitalNational Center for Cardiovascular DiseasesChinese Academy of Medical Sciences and Peking Union Medical CollegeBeijingChina Medical Research and Biometrics Center State Key Laboratory of Cardiovascular DiseaseFuwai HospitalNational Center for Cardiovascular DiseasesChinese Academy of Medical Sciences and Peking Union Medical CollegeBeijingChina Xinxiang Central Hospital XinxiangHenan ProvinceChina Langfang People’s Hospital LangfangHebei ProvinceChina First Hospital of Qinhuangdao QinhuangdaoHebei ProvinceChina

Background Proton pump inhibitors(PPIs) are recommended by the latest guidelines to reduce the risk of bleeding in acute myocardial infarction(AMI) patients treated with dual antiplatelet therapy(DAPT). However, previous pharmacodynamic and clinical studies have reported controversial results on the interaction between PPI and the P2 Y12 inhibitor clopidogrel. We investigated the impact of PPIs use on in-hospital outcomes in AMI patients, aiming to provide a new insight on the value of PPIs. Methods A total of 23,380 consecutive AMI patients who received clopidogrel with or without PPIs in the China Acute Myocardial Infarction(CAMI) registry were analyzed. The primary endpoint was major adverse cardiovascular and cerebrovascular events(MACCE) defined as a composite of in-hospital cardiac death, re-infarction and stroke. Propensity score matching(PSM) was used to control potential baseline confounders. Multivariate logistic regression analysis was performed to evaluate the effect of PPIs use on MACCE and gastrointestinal bleeding(GIB). Results Among the whole AMI population, a large majority received DAPT and 67.5% were co-medicated with PPIs. PPIs use was associated with a decreased risk of MACCE(Before PSM OR: 0.857, 95% CI: 0.742-0.990, P = 0.0359;after PSM OR: 0.862, 95% CI: 0.768-0.949, P = 0.0245) after multivariate adjustment. Patients receiving PPIs also had a lower risk of cardiac death but a higher risk of complicating with stroke. When GIB occurred, an alleviating trend of GIB severity was observed in PPIs group. Conclusions Our study is the first nation-wide large-scale study to show evidence on PPIs use in AMI patients treated with DAPT. We found that PPIs in combination with clopidogrel was associated with decreased risk for MACCE in AMI patients, and it might have a trend to mitigate GIB severity. Therefore, PPIs could become an available choice for AMI patients during hospitalization.

关键词： Acute myocardial infarction Clopidogrel Drug interaction Propensity score

The morphology and dynamic viscoelasticity for PPS/low-melting temperature glass hybrids prepared by melt blending

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Chinese Chemical Letters 2012年第4期23卷 478-480页

作者： Li Na Zhang Xiao Hu Zhang hong mei yang Qiang Zheng Department of Polymer Science and Engineering Zhejiang UniversityHangzhou 310027China Key Laboratory of Macromolecular Synthesis and Functionalization Ministry of EducationZhejiang UniversityHangzhou 310027China

Polyphenylene sulfides（PPS） and low-melting temperature glasses（LMTG） were used to prepare a PPS/LMTG organicinorganic hybrid material by melt *** etched surfaces of the hybrids were observed by scanning electron microscope （SEM） and the images showed different dispersed phase morphologies compared to traditional filled composites,which maybe induced by *** rheometric expanded system（ARES） was used to investigate the rheological behaviors of the hybrids and the results showed that the strain y dependence of dynamic storage modulus G＇ for the hybrids with high contents of LMTG did not appear Payne effect.

关键词： Polyphenylene sulfides Low-melting temperature glasses Melt blending Rheological behavior

A study of metal/die interfacial heat transfer behavior of vacuum die cast pure copper

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China Foundry 2020年第3期17卷 206-211页

作者： hong-mei yang Zhou-meng Pu Zhi-peng Guo Ang Zhang Shou-mei Xiong School of Materials Science and Engineering Tsinghua UniversityBeijing 100084China Key Laboratory for Advanced Materials Processing Technology(Ministry of Education) Beijing 100084China Yunnan Copper Die-casting Technology Co. Ltd.Kunming 650001China

High pressure die casting copper is used to produce rotors for induction motors to improve *** were carried out for a special"step-shape"casting with different step *** on the measured temperature inside the die,the interfacial heat transfer coefficient(IHTC)at the metal/die interface during vacuum die casting was evaluated by solving the inverse *** IHTC peak value was 4.5×10^3-11×10^3 W·m^-2·K^-1 under the basic operation *** influences of casting pressure,fast shot speed,pouring temperature and initial die surface temperature on the IHTC peak values were *** show that a greater casting pressure and faster shot speed could only increase the IHTC peak values at the location close to the *** increase of pouring temperature and/or initial die surface temperature significantly increases the IHTC peak values.

关键词： vacuum die casting interfacial heat transfer behavior inverse method copper metal/die interface

Effect of vacuum on porosity and mechanical properties of high-pressure die-cast pure copper

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China Foundry 2019年第4期16卷 232-237页

作者： hong-mei yang Zhi-peng Guo Hua-zhong yang Zhi-hua Fu Zhou-meng Pu Shou-mei Xiong School of Materials Science and Engineering Tsinghua University Beijing 100084 China Key Laboratory for Advanced Materials Processing Technology Ministry of Education Beijing 100084 China Yunnan Copper Die-casting Technology Co. Ltd. Kunming 650001 China

Pure copper tensile bars were produced by conventional die casting(HPDC) and vacuum-assist die casting(VADC) processes. Porosity and mechanical properties were investigated by using optical microscopy(OM), scanning electron microscopy(SEM), energy dispersive spectroscopy(EDS), X-ray computed tomography(XCT) and tensile tester. Results show that porosities including gas porosity and shrinkage porosity could be observed in copper castings. Since the application of vacuum could reduce filling related gas entrapment and facilitate solidification due to the increased heat transfer between metal and die, both number and size of the entrapped gases, as well as shrinkage porosities were significantly reduced in vacuum-assist die castings of pure copper. The porosity fraction decreased from 2.243% to 0.875% compared with that of the conventional die casting. Besides, mechanical properties were improved significantly, i.e., by 15% for ultimate tensile strength and three times for elongation.

关键词： vacuum copper high pressure die casting (HPDC) mechanical properties porosity

Kinetics and Mechanism of Iridium(Ⅲ)-Catalyzed Oxidation of Ethanol Amine by Cerium(Ⅳ) in Sulfuric Acid Media

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Chemical Research in Chinese Universities 2007年第3期23卷 333-338页

作者： ZHAI Yong-qing LIU hong-mei yang Lin yang Guo-zhong SONG Wen-yu LIU Yu-kai College of Chemistry and Environmental Science Hebei University Baoding 071002 P. R. China

In this study, the kinetics and mechanism of the iridium（ Ⅲ ） -catalyzed oxidation of ethanol amine（EAN） by cerium（Ⅳ） in a sulfuric acid medium was investigated using titrimetric technique of redox in a temperature range of 298--313 K. It was found that the reaction is of first order with respect to Ce（ Ⅳ ） and It（ Ⅲ ）, and a positive fractional order with respect to EAN. It was also found that the pseudo-first-order （ [EAN ] 〉〉 [ Ce （ Ⅳ） ] ） rate constant koba decreases with the increase of [ H^＋ ] and [ HSO^-4 ]. Under the protection of nitrogen gas, the reaction system can initiate the polymerization of acrylonitrile, indicating the generation of free radicals. On the basis of the experimental results, a suitable mechanism was proposed. From the dependence of koba on the concentration of hydrogen sulfate, Ce（SO4）2 was found to be the kinetically active species. The rate constants of the rote-determining step together with the activation parameters were evaluated.

关键词： Iridium(Ⅲ) ion Cerium(Ⅳ) ion Ethanol amine Catalytic oxidization Kinetics and mechanism

Editorial:special issue on analysis and control of complex systems in honor of the 90th birthday of Professor Huashu Qin

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Control Theory and Technology 2024年第3期22卷 343-344页

作者： Yiguang hong Shengwei mei Ping yang Department of Control Science and Engineering Tongji UniversityShanghai200092China Shanghai Research Institute for Intelligent Autonomous Systems Tongji UniversityShanghai200092China Department of Electrical Engineering and Applied Electronics Technology Tsinghua UniversityBeijing100084China School of Electric Power South China University of TechnologyGuangzhou510640GuangdongChina

It is our great pleasure to organize this special issue in Control Theory and Technology in honor of the 90th birthday of Professor Huashu *** is one of the pioneers in control theory and applications in China,and has made many truly outstanding contributions to the field including nonlinear dynamics and control,intelligent control,robotics and complex *** is no surprise that she was selected as a representative introduced significantly in“Women in Control”of IEEE Control Systems Magazine.

关键词： control honor analysis

Determining beam transverse absolute position by triangulation of multi-electrode signal phase differences

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Nuclear Science and Techniques 2024年第8期35卷 38-47页

作者： Xing yang hong‑Shuang Wang Yi‑mei Zhou Yong‑Bin Leng Shanghai Institute of Applied Physics Chinese Academy of SciencesShanghai 201800China University of Chinese Academy of Sciences Beijing 100049China Shanghai Advanced Research Institute Chinese Academy of SciencesShanghai 201204China University of Science and Technology of China Hefei 230026China

Accurate measurement of the transverse position of a beam is crucial in particle accelerators because it plays a key role in determining the beam *** methods for beam-position measurement rely on the detection of image currents induced on electrodes or narrow-band wake field induced by a beam passing through a cavity-type ***,these methods have *** indirect measurement of multiple parameters is computationally complex,requiring external calibration to determine the system parameters in ***,the utilization of the beam signal information is ***,this study proposes a novel method for measuring the absolute electron beam transverse *** utilizing the geometric relationship between the center position of the measured electron beam and multiple detection electrodes and by analyzing the differences in the arrival times of the beam signals detected by these electrodes,the absolute transverse position of the electron beam crossing the electrode plane can be *** method features absolute position measurement,a position sensitivity coefficient independent of vacuum chamber apertures,and no requirement for a symmetrical detector electrode *** feasibility of this method is validated through numerical simulations and beam experiments.

关键词： Electron beam bunch-by bunch diagnostics Bunch position measurement Triangulation method Bunch phase Bunch-by-bunch Transverse position Pickup signal