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Preventive Effect and Mechanism of Ethyl Acetate Extract of Sceptridium ternatum in Monocrotaline-Induced Pulmonary Arterial Hypertension

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Chinese Journal of Integrative Medicine 2020年第3期26卷 205-211页

作者： XIN Wen-xiu li qing-lin FANG Luo ZHONG li-ke ZHENG Xiao-wei HUANG Ping Department of Pharmacy Zhejiang Cancer Hospital

Objective:To observe the effect and molecular mechanism of ethyl acetate extract of Sceptridium ternatum(STE)on the monocrotaline(MCT)-induced pulmonary arterial hypertension(PAH).Methods:The main chemical components of Sceptridium ternatum were determined,and the effects in PAH rats were observed.A total of 140 Sprague Dawley rats were randomly and equally divided into the normal group,the model group,the Bosentan group,and the STE groups(2.5,5,10 g/kg)by the random number table *** characteristic indicators of PAH were measured,and immunohistochemistry was used to observe the lung tissue of *** changes of the lung tissue were observed under the light ***:Compared with the normal group,rats in the model group showed a significant increase in right ventricular free wall thickness(RVFWT),mean pulmonary arterial pressure(mPAP),mean right ventricular pressure(mRVP),max right ventricular pressure(max RVP),weight of right ventricle(RV),and lung index(li),while a significant decrease in pulmonary artery acceleration time(PAAT,Plieve the PAH in *** may relieve pulmonary vascular disease and pulmonary injury by down-regulating the expression of NF-κB p65 andα-SMA.

关键词： pulmonary arterial hypertension ethyl acetate extract of Sceptridium ternatum mechanism Chinese medicine

An adaptive fuzzy filter for coding artifacts removal in video and image

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Journal of Zhejiang University-Science A(Applied Physics & Engineering) 2007年第6期8卷 841-848页

作者： WU Jing YE xiu-qing GU Wei-kang Department of Information and Communication Engineering Zhejiang University Hangzhou 310027 China

This paper proposes a new adaptive post-filtering algorithm to remove coding artifacts in block-based video coder. The proposed method concentrates on blocking and ringing artifacts removal. For de-blocking, the blocking strength is identified to determine the filtering range, and the maximum quantization parameter of the image is used to adapt the 1D fuzzy filter. For de-ringing, besides the edge detection, a complementary ringing detection method is proposed to locate the neglected ringing blocks, and the gradient threshold is adopted to adjust the parameter of 2D fuzzy filter. Experiments are performed on the MPEG-4 sequences. Compared with other methods, the proposed one achieves better detail preservation and artifacts removal performance with lower computational cost.

关键词： Adaptive fuzzy filter Blocking artifacts Ringing artifacts De-blocking De-ringing

A Survey of Intelligent Network Fault Diagnosis Technology

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A Survey of Intelligent Network Fault Diagnosis Technology

Study on the Removal of MIBK from Aqueous Solution by Vacuum Membrane Distillation

第25届中国控制与决策会议

作者： Lv Feng li Xiang Wang xiu-qing College of Physics Science and Information Engineering Hebei Normal University

ISBN: (纸本)9781467355339

This paper firstly discusses the common fault types of networks, and the necessity and importance of intelligent fault diagnosis for networks. Secondly, the basic process for network diagnosis systems is put forward. Thirdly, the basic idea and various popular methods of network fault diagnosis based on the intelligent technology, such as: Expert System, Bayesian Network, Rough Set and Neural Networks, are reviewed. Finally, the existing problems and the future research direction for network fault diagnosis are discussed.

关键词： Network Fault Diagnosis Pattern Recognition Machine Learning Data Mining

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Journal of Central South University 2000年第4期12卷 178-181页

作者： TANG Jian-jun ZHOU Kang-gen ZHANG Qi-xiu li qing-gang Metallurgical Separation Science and Engineering Lab. Central South UniversityChangsha 410083China

Methyl isobutyl ketone(MIBK) is widely used as extraction agent in hydrometallurgy. As it has a definite solubility in water, so when using MIBK as extraction agent, there will be MIBK in stripping solutions inevitably, which not only pollutes working conditions, but also affects the quality of ultimate product. In order to remove MIBK from aqueous solutions, the means of flat vacuum membrane distillation(VMD) is studied in the paper. The area of the membrane used in the study is 0.02 m 2, the initial volume of feed is 2 L, each experiment was conducted over a time period of 60 120 min. The influences of the factors such as temperature(34.8 55.0 ℃); pressure in the permeate side(10.67 14.67 kPa) and feed flow rate(27.8 69.4 mL/s) were experimentally studied. Increasing the temperature or reducing the pressure in the permeate side results in a faster removal of MIBK; however there is a decrease in removal factor β , increasing the feed flow rate results in a faster removal of MIBK and an increase of removal factor β , especially in the range of lower flow rate. The study indicates that the aim of MIBK removal and recycle from dilute aqueous solutions can be achieved by VMD.

关键词： vacuum membrane distillation methyl isobutyl ketone removal

Synthesis and Characterization of trans-1,4-Butadiene/Isoprene Copolymers: Determination of Monomer Reactivity Ratios and Temperature Dependence

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Chinese Journal of Polymer Science 2014年第8期32卷 1068-1076页

作者： qing-fei Zhang xiu-bo Jiang 贺爱华 Key Laboratory of Rubber-Plastics (Ministry of Education)/Shandong Provincial Key Laboratory of Rubber-PlasticsSchool of Polymer Science and Engineering Qingdao University of Science and Technology

A series of trans-1,4-butadiene/isoprene copolymers were prepared using the catalyst system TiCl4/MgCl2-Al（i- Bu）3 with bulk precipitation technology at different temperatures. Monomers reactivity ratios were calculated based on the Kelen-Tiid6s （K-T） method and the Mao-Huglin （M-H） method. The influence of temperature on copolymer composition and polymerization rate was discussed in detail. The increase of reaction temperature brought the decrease of butadiene reactivity ratio rBd and supplied an effective adjustment on copolymers＇ composition distribution.

关键词： trans-1,4- Isoprene Butadiene Copolymer Reactivity ratio.

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军队流行性出血热流行现况分析

军事医学 2017年第7期41卷 603-606,610页

作者：王盛书陈伟张秀山李青华李亚楠范国英张文义邹文孙海龙李申龙王勇军事医学科学院疾病预防控制所北京100071

目的分析军队流行性出血热流行病学特征,为部队防控提供参考依据。方法收集1991年1月至2016年7月军队流行性出血热的疫情监测数据及1949年以来的文献资料,并进行流行病学分析。结果文献共报道23起流行性出血热暴发疫情;驻东北地区部队暴... 详细信息

目的分析军队流行性出血热流行病学特征,为部队防控提供参考依据。方法收集1991年1月至2016年7月军队流行性出血热的疫情监测数据及1949年以来的文献资料,并进行流行病学分析。结果文献共报道23起流行性出血热暴发疫情;驻东北地区部队暴发17起,占73.91%,明显高于其他地区部队(P<0.01);1991年1月至2016年7月军队疫情监测管理信息系统和军队突发公共卫生事件和传染病疫情报告信息系统共上报暴发疫情12起,流行性出血热1666例,发病总体呈下降趋势;驻华北地区部队上报病例最多,为734例,占46.00%(P<0.01);男性明显多于女性(P<0.01);战士发病人数明显多于军官(P<0.05);营区内发病明显多于营区外发病(P<0.05)。结论军队流行性出血热总体发病情况趋于平稳,在年龄、地区、发病地点分布等方面存在显著差异,应加强监测,制定综合防控措施,提升高流行区域驻军流行性出血热卫生防控能力和水平。

关键词：流行性出血热流行病学军队

Development and validation of a new prognostic model for patients with acute-on-chronic liver failure in intensive care unit

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World Journal of Gastroenterology 2024年第20期30卷 2657-2676页

作者： Zong-Yi Zhu xiu-Hong Huang Hui-qing Jiang li liu Department of Gastroenterology The Second Hospital of Hebei Medical UniversityShijiazhuang 050000Hebei ProvinceChina Department of Gastroenterology Weixian People's HospitalXingtai 054700Hebei ProvinceChina

BACKGROUND Cirrhotic patients with acute-on-chronic liver failure(ACLF)in the intensive care unit(ICU)have a poor but variable *** prognosis evaluation can guide the rational management of patients with ***,existing prognostic scores for ACLF in the ICU environment lack sufficient *** To develop a new prognostic model for patients with ACLF in *** Data from 938 ACLF patients in the Medical Information Mart for Intensive Care(MIMIC)database were used to develop a new prognostic model(MIMIC ACLF)for ***,calibration and clinical utility of MIMIC ACLF were assessed by area under receiver operating characteristic curve(AUROC),calibration curve and decision curve analysis(DCA),*** ACLF was then externally validated in a multiple-center cohort,the Electronic Intensive Care Collaborative Research Database and a single-center cohort from the Second Hospital of Hebei Medical University in *** The MIMIC ACLF score was determined using nine variables:ln(age)×2.2+ln(white blood cell count)×0.22-ln(mean arterial pressure)×2.7+respiratory failure×0.6+renal failure×0.51+cerebral failure×0.31+ln(total bilirubin)×0.44+ln(internationalized normal ratio)×0.59+ln(serum potassium)×*** MIMIC cohort,the AUROC(0.81/0.79)for MIMIC ACLF for 28/90-day ACLF mortality were significantly greater than those of Chronic liver Failure Consortium ACLF(0.76/0.74),Model for End-stage liver Disease(MELD;0.73/0.71)and MELD-Na(0.72/0.70)(all Plinical utility of MIMIC ACLF were validated in the external *** We developed and validated a new prognostic model with satisfactory accuracy

关键词： Acute-on-chronic liver failure Cirrhosis Risk stratification Prognosis Model Scores

Synthesis and Characterization of Trans-1,4-butadiene/Isoprene Copolymers: Determination of Sequence Distribution and Thermal Properties

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Chinese Journal of Polymer Science 2015年第6期33卷 815-822页

作者： xiu-bo Jiang qing-fei Zhang 贺爱华 Key Laboratory of Rubber-Plastics Ministry of Education/Shandong Provincial Key Laboratory of Rubber-PlasticsSchool of Polymer Science and EngineeringQingdao University of Science and Technology

Abstract Two series of trans-1,4-poly（butadiene-co-isoprene） copolymers （TBIR） were prepared using the catalyst system TiCl4/MgCl2-Al（i-Bu）3 at different reaction temperatures. All dyad and triads sequence distributions, the number-average sequence length and the sequence concentration of the copolymers were calculated according to 13C-NMR spectra. The influences of temperature and initial molar ratio of butadiene to isoprene （Bd to Ip） on the distribution of the chain segments in the TBIR copolymers were discussed. The correlation of copolymer compositions and thermal properties were also evaluated, which facilitated the understanding of controlling the degree of crystallinity and the transition tempera^re by changing Bd content and temperature.

关键词： Trans-1,4- Isoprene Butadiene Copolymer Thermal properties.

The synthesis of porphyrin-anthraquinone dyad via an azo-rearrangement

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Chinese Chemical Letters 2011年第5期22卷 539-542页

作者： Cheng Jie li Ya qing Feng xiu Jun liu Tian Yi Zhang School of Chemical Engineering and Technology Tianjin University Tianjin 300072 China

One novel porphyrin P-Q2 is planned to be synthesized by condensation between ATPP and ***,after separation by chromatography and characterization with IR,~1H NMR,HR-MS and X-ray,P-Q1 is obtained *** the structure of P-Q1 with that of P-Q2,it is realized that an intramolecular cyclization rearrangement takes place when the azo group is situated in the O-position to the amido *** rearrangement offers a new way to prepare indazole *** addition,the spectral properties of P-Q1 have been studied by UV-vis and steady state fluorescence *** fluorescence quenching is observed in the preliminary emission spectrum due to the proposed electron transfer from the excited porphyrin to the anthraquinone moieties.

关键词： Porphyrin Anthraquinone Azo-rearrangement Fluorescence quenching