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Persistent postoperative hypotension caused by subclinical empty sella syndrome after a simple surgery:A case report

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World Journal of Clinical Cases 2023年第24期11卷 5817-5822页

作者： kang-Mei Zhao jia-sheng Hu sheng-Mei Zhu Ting-Ting Wen Xiang-Ming Fang Department of Anesthesiology The First Affiliated HospitalSchool of MedicineZhejiang UniversityHangzhou 310003Zhejiang ProvinceChina Department of Anesthesiology Sanmen People’s HospitalSanmen 317100Zhejiang ProvinceChina

BACKGROUND Empty sella is an anatomical and radiological finding of the herniation of the subarachnoid space into the pituitary fossa leading to a flattened pituitary *** with empty sella may present with various symptoms,including headache due to intracranial hypertension and endocrine symptoms related to the specific pituitary hormones ***,we report a female patient who developed persistent postoperative hypotension caused by subclinical empty sella syndrome after a simple *** SUMMARY A 47-year-old woman underwent vocal cord polypectomy under general anesthesia with endotracheal *** denied any medical history,and her vital signs were normal before the *** and surgery were ***,she developed dizziness,headache and persistent hypotension in the ***,intravenous dopamine was started to maintain normal blood pressure,which improved her ***,she remained dependent on dopamine for over 24 h without any obvious anesthesia-and surgery-related *** endocrine etiology was then suspected,and further examination showed a high prolactin level,a low normal adrenocorticotropic hormone level and a low cortisol *** resonance imaging of the brain revealed an empty ***,she was diagnosed with empty sella syndrome and secondary adrenal *** symptoms disappeared one week later after daily glucocorticoid *** Endocrine etiologies such as pituitary and adrenal-related dysfunction should be considered in patients showing persistent postoperative hypotension when anesthesia-and surgery-related factors are excluded.

关键词： Empty sella syndrome Perioperative hypotension Secondary adrenal insufficiency Adrenocorticotropic hormone Cortisol Case report

Ferroptosis:a critical player and potential therapeutic target in traumatic brain injury and spinal cord injury

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Neural Regeneration Research 2023年第3期18卷 506-512页

作者： Qing-sheng Li Yan-Jie jia Department of Neurology The First Affiliated Hospital of Zhengzhou UniversityZhengzhouHenan ProvinceChina Academy of Medical Sciences Zhengzhou UniversityZhengzhouHenan ProvinceChina

Ferroptosis,a new non-necrotizing programmed cell death(PCD),is driven by iron-dependent phospholipid *** plays a key role in secondary traumatic brain injury and secondary spinal cord injury and is closely related to inflammation,immunity,and chronic *** inhibitors against ferroptosis effectively improve iron homeostasis,lipid metabolism,redox stabilization,neuronal remodeling,and functional recovery after *** this review,we elaborate on the latest molecular mechanisms of ferroptosis,emphasize its role in secondary central nervous trauma,and update the medicines used to suppress ferroptosis following injuries.

关键词： ferroptosis immune response inflammation iron homeostasis lipid metabolism medicine programmed cell death spinal cord injury traumatic brain injury

Science Letters:Multi-frequency proportional-resonant (MFPR) current controller for PWM VSC under unbalanced supply conditions

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Journal of Zhejiang University-Science A(Applied Physics & Engineering) 2007年第10期8卷 1527-1531页

作者： HU jia-bing HE Yi-kang Sehool of Eleetrieal Engineering Zhejiang University Hangzhou 310027 China

This letter presents a multi-frequency proportional-resonant （MFPR） current controller developed for PWM voltage source converter （VSC） under the unbalanced supply voltage conditions. The delta operator is used in place of the shift operator for the implementation of MFPR by using a low-cost fixed-point DSE The experimental results with an alternative control strategy validated the feasibility of the proposed MFPR current controller for the PWM VSC during voltage unbalance.

关键词： PWM VSC Multi-frequency proportional-resonant (MFPR) Voltage unbalance

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夏热冬冷地区某高校宿舍春季热舒适调查研究

建筑技术开发 2021年第4期48卷 94-97页

作者：周志平康家胜杨建波郑文亨覃福雨桂林电子科技大学建筑与交通工程学院广西桂林541004

为研究夏热冬冷地区自然通风学生宿舍春季室内热环境与热舒适状况,采用现场环境参数测试及问卷调查相结合的方式,对桂林市某高校宿舍热环境和人体热感觉进行调研,运用统计学分析法对服装热阻、热感觉(TSV)和操作温度之间的关系进行回归... 详细信息

为研究夏热冬冷地区自然通风学生宿舍春季室内热环境与热舒适状况,采用现场环境参数测试及问卷调查相结合的方式,对桂林市某高校宿舍热环境和人体热感觉进行调研,运用统计学分析法对服装热阻、热感觉(TSV)和操作温度之间的关系进行回归分析。结果显示,春季服装热阻与操作温度负相关,操作温度每升高1℃,服装热阻减少0.0529clo;该地区春季热中性操作温度为21.8℃,实测及TSV所对应的80%可接受温度范围分别为20.29〜27.29℃和15.3〜28.4℃,可接受相对湿度上限为83%。该结果可为桂林高校宿舍热环境与热舒适研究提供参考。

关键词：夏热冬冷地区学生宿舍自然通风热环境热舒适

Analysis of a new 5-phase bearingless induction motor

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Journal of Zhejiang University-Science A(Applied Physics & Engineering) 2007年第8期8卷 1311-1319页

作者： HUANG Jin kang Min YANG jia-qiang School of Electrical Engineering Zhejiang University Hangzhou 310027 China

This paper addresses the bearingless motor with a single set of multiphase windings. The interaction between M and M±1 pole-pair magnetic fields produces radial force. Based on this principle,a bearingless machine is obtained. Conventional bearingless machine has dual windings,levitation windings and torque windings,which produce the two magnetic fields. In the proposed bearingless motor,the two needed magnetic fields are produced by feeding two groups of currents to a single set of multiphase windings. Taking a 5-phase induction motor as example,the inductance matrices,considering air gap eccentricity,are calculated with the modified winding function method. The radial force analytical model is deduced by virtual displacement,and its results are validated by FEA. The mathematical model of the new bearingless machine is set up,and the simulation results verified the feasibility of this novel bearingless motor.

关键词： Air-gap-flux-oriented control Bearingless motor Multiphase Radial force Single set of windings Modified winding function method

Research on Improved Character Encoding Methods Based on QR Code

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Chinese Journal of Electronics 2019年第6期28卷 1170-1176页

作者： kang Bohan jia Jingdun GAO Wanlin ZHANG Ning School of Information Central University of Finance and Economics National Rural Technology Development Center Ministry of Science and Technology College of Information and Electrical Engineering China Agricultural University

With the popularity of mobile terminals,Quick response(QR) code, which acts as a convenient and quick way to transfer graphic information, has been widely used in various fields. QR code is a 2D matrix code which contains information in both vertical and horizontal directions. In order to promote the characters encoding efficiency, we propose the improved character encoding methods based on QR code. Specifically, we divide the types of encoding data into Chinese characters and nonChinese characters, and thus optimizing their encoding methods separately: we apply the branch-bound algorithm to optimize the encoding pattern selection of QR code; as for Chinese characters, based on the Chinese characters use frequency generated by Url crawler system, we design a new encoding method for Chinese characters. Our approach has been shown to afford better experimental test results compared with traditional encoding methods of QR code.

关键词： QR code QR code encoding methods Branch-bound algorithm Chinese characters use frequency

Elevated high sensitive C-reactive protein and apelin levels after percutaneous coronary intervention and drug-eluting stent implantation

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Journal of Zhejiang University-Science B(Biomedicine & Biotechnology) 2010年第8期11卷 548-552页

作者： Xin DU Jun-ping kang jia-hui WU Qiang LV Chao-shu TANG Chang-sheng MA Cardiovascular Division Beijing Anzhen Hospital Copital Medical University Beijing 100029 China Department of Physiology and Pathophysiology School of Basic Medical Sciences Peking University Beijing 100083 China

Objective:Percutaneous coronary intervention(PCI) triggers an acute inflammatory response,while sirolimus is known to have anti-inflammatory properties;the inflammatory system response to PCI after sirolimus-eluting stent placement remains *** purpose of this study is to determine the changes in high sensitive C-reactive protein(hs-CRP) and apelin after PCI procedure and drug-eluting stent implantation in patients with and without reduced left ventricular systolic ***:Forty-eight consecutive patients undergoing PCI at the Beijing Anzhen Hospital between July and September 2006 were ***-eluting stents were employed in all *** samples were drawn immediately before and 24 h after the *** hs-CRP and apelin levels were determined by enzyme ***:Paired t-test revealed a significant increase in both hs-CRP and apelin post-procedure(P=0.006 and P<0.0001,respectively).Patients with reduced left ventricular ejection fraction(LVEF) had significantly lower baseline apelin levels compared to those with normal ventricular function [(46.8±10.8) vs.(72.0±8.4) pg/ml,P<0.001].However,apelin increased to a level similar to the level of those with normal left ventricular systolic function 24 h after the PCI procedure [(86.7±11.6) vs.(85.1±6.1) pg/ml,P=0.72].Conclusions:hs-CRP and apelin levels increased after PCI and sirolimus-eluting stent *** with impaired left ventricular systolic function had significantly lower baseline apelin levels,which increased significantly after PCI.

关键词： High sensitive C-reactive protein (hs-CRP) Apelin Percutaneous colonary intervention (PCl)

Cysteine-rich peptides: signals for pollen tube guidance, species isolation and beyond

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Science China(Life Sciences) 2019年第9期62卷 1243-1245页

作者： sheng Zhong Li-jia Qu State Key Laboratory for Protein and Plant Gene Research Peking-Tsinghua Center for Life Sciences at College of Life SciencesPeking UniversityBeijing 100871China The National Plant Gene Research Center (Beijing) Beijing 100101China

In flowering plants,the two sperm cells are passive cargo transported into the ovule by pollen tubes (Zhang et al.,2017).Therefore,the precise guidance of pollen tubes is critical for successful double fertilization (Dresselhaus and Franklin-Tong,2013).A series of male-female interactions are required to guarantee the spatiotemporal regulation of pollen tube guidance because during growth,pollen tubes continuously interact with different female tissues (Zhong et al.,2017;Zhong and Qu,2019).In the past two decades,there has been tremendous progress in elucidating the molecular mechanisms of pollen tube guidance regulation,mostly using Arabidopsis thaliana as a model system (Johnson et al.,2019).

关键词： double fertilization pollen tube model system

Precipitation of α-Fe from Fe_(84-x)Si_(4)B_(12+x)(x=1,3) Amorphous Alloys Under High Magnetic Field Annealing

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Acta Metallurgica Sinica(English Letters) 2021年第8期34卷 1163-1172页

作者： Leipeng Duan kang Wang Engang Wang Peng jia Key Laboratory of Electromagnetic Processing of Materials(Ministry of Education) Northeastern UniversityShenyang 110819China School of Metallurgy Northeastern UniversityShenyang 110819China

This work aims to investigate the effects of high magnetic field annealing(HMFA) on the precipitation of α-Fe from Fe_(84-x)Si_(4)B_(12+ x)( x = 1, 3) amorphous precursors. Isothermal annealing process for Fe_(81)Si_(4)B_(15) and Fe_(83)Si_(4)B_(13) amorphous ribbons has been performed with and without the magnetic field. The magnetic field shows the effects of increasing the nucleation rate and decreasing the grain size of α-Fe crystals simultaneously, during the crystallization processes of the investigated amorphous alloys. By applying HMF, α-Fe crystals with more homogeneous distribution and smaller grain size are achieved in the amorphous matrix, which is crucial helpful to improve the magnetic properties for Fe–Si–B amorphous alloys. The mechanism of HMFA affecting the crystallization microstructure is also discussed in the present work.

关键词： High magnetic field Crystallization α-Fe Nucleation Grain size Atomic diffusion