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Total Fractionation and Analysis of Polysaccharides from Leaves of Panax ginseng C.A. Meyer

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Chemical Research in Chinese Universities 2010年第2期26卷 230-234页

作者： NI xiu-zhen WANG Bing-qing zhi Yuan WEI Ning-ning ZHANG Xu LI Shan-shan TAI gui-hua ZHOU Yi-fa ZHAO Ji-ming School of Life Sciences Northeast Normal University Changchun 130024 P. R. China School of Life Sciences Changchun Normal University Changchun 130032 P. R. China

The water-soluble polysaccharides isolated from the leaves of Panax ginseng C. A. Meyer were totally fractionated into one neutral fraction（GLPN-1）, six acidic fractions（GLPN-2, GLPA-1a, GLPA-1b, GLPA-1c, GLPA-2 and GLPA-3） by a combination of ethanol precipitation, ion-exchange and gel permeation chromatography. All the fractions were analyzed by determining monosaccharide composition, molecular weight distribution. The resuits show that GLPN-1 was mainly composed of Gal（38.1%） and Ara（33.6%） and presumed to be an arabinogalactan. GLPA-1a, GLPA-1b and GLPA-2 mainly contained Gal, Ara, Rha and GalA. The amount of Gal and Ara acounted for over 50% of total sugar and the amount of Rha was more than 10%. The molar ratios of Rha/GalA in GLPA-1a, GLPA-1b and GLPA-2 were 1：1, 1：2 and 1：2.7, respectively, indicating that they belong to type-1 rhamnogalacturonan （RG-1）-rich pectin. GLPA-1c was mainly composed of GalA（78%）, belonging to homogalacturonan（HG）-rich pectin. GLPA-3 might be a glycoprotein.

关键词： Ginseng leave Polysaccharide Fractionation RG-I domain

Laparoscopic left lateral sectionectomy in pediatric living donor liver transplantation by single-port approach:A case report

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World Journal of Clinical Cases 2020年第23期8卷 6103-6109页

作者： Hong-Yu Li Lin Wei zhi-gui Zeng Wei Qu zhi-Jun Zhu Liver Transplantation Center Beijing Friendship HospitalCapital Medical UniversityBeijing 100050China

BACKGROUND Single-port laparoscopy has been used in a variety of abdominal *** report the first case of single-port laparoscopic left lateral sectionectomy in pediatric laparoscopic living donor liver *** SUMMARY A 28-year-old man volunteered for living liver donation to his daughter who was diagnosed with liver cirrhosis and portal hypertension after the Kasai procedure for biliary *** body mass index was 20.5 kg/*** dynamic computed tomography showed:(1)Left lateral graft volume of 232.76 cm3 with a graft-torecipient weight ratio of 2.59%;and(2)Right hepatic artery derived from the superior mesenteric artery.A single-port access system was placed through a transumbilical incision,including four trocars:two 12-mm ports for a camera and endoscopic stapler and two 5-mm working *** parenchyma was dissected by a Harmonic and Cavitron Ultrasonic Surgical Aspirator,while bipolar was used for *** bile duct was transected above the bifurcation by indocyanine green fluorescence *** specimen was retrieved from the umbilical *** total operation time was 4 h without blood *** final graft weight was 233.6 g with graft-torecipient weight ratio of 2.60%.The donor was discharged uneventfully on postoperative day *** Single-port laparoscopic left lateral sectionectomy is feasible in pediatric laparoscopic living donor liver transplantation in an experienced transplant center.

关键词： Pediatric living donor liver transplantation Laparoscopy Single-port approach Intraoperative indocyanine green fluorescence cholangiography Treatment Case report

The　Feasibility　Study　of　the　Waste　Heat　Air－Conditioning　System　for　Automobile

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Journal of Thermal Science 1994年第2期3卷 126-129页

作者： gui-ping Lin xiu-gan Yuan zhi-guang Mei(Air-Conditioning and Refrigeration Institute, Beijing University of Aeronautics and Astronautics, Beijing 100083) 1. Air-Conditioning and Refrigeration Institute Beijing University of Aeronautics and Astronautics 100083 Beijing

In this paper, the feasibility of application of a solid-absorption system using ammonia and chlorides as working pair to automobile air-conditioning system is investigated. This system has the advantages of minimum environmental problem and utilizing waste heat from the automobile engine as thermal energy input. Analyses show that the main problem associated with the application of solid-absorption system is the size of the reactors. Techniques to solve this problem are discussed.

关键词： air-conditioning waste heat automobile.

Adaptive Predictive Functional Control for Networked Control Systems with Random Delays

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International Journal of Automation and computing 2011年第1期8卷 62-68页

作者： xiu-Lan Wang Chun-Guo Fei Zheng-zhi Han School of Electronic Information and Electrical Engineering Shanghai Jiao Tong University Shanghai 200030 PRC Department of Automation College of Aeronautical Automation Civil Aviation University of China Tianjin 300300 PRC

Nowadays, more and more field devices are connected to the central controller through a serial communication network such as fieldbus or industrial Ethernet. Some of these serial communication networks like controller area network （CAN） or industrial Ethernet will introduce random transfer delays into the networked control systems （NCS）, which causes control performance degradation and even system instability. To address this problem, the adaptive predictive functional control algorithm is derived by applying the concept of predictive functional control to a discrete state space model with variable delay. The method of estimating the networkinduced delay is also proposed to facilitate the control algorithm implementing. Then, an NCS simulation research based on TrueTime simulator is carried out to validate the proposed control algorithm. The numerical simulations show that the proposed adaptive predictive functional control algorithm is effective for NCS with random delays.

关键词： Delay systems network control distributed control predictive control computer networks.

Research on Protection Methods of Historic and Cultural Villages in Zhejiang Province

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Journal of Harbin Institute of Technology(New Series) 2014年第4期21卷 37-42页

作者： xiu-Ping Wang Ji-Jun Ding Wei-zhi Chen School of Art And Design Zhejiang Sci-Tech University

By the investigation of a few historical and cultural villages in Zhejiang Province,some problems during the process of protecting these villages were found,like similar construction pattern,coarse quality of construction,etc. which caused that villages were losing their characters. For this situation,the protection method of historical cultural villages was put forward,which was that to connect excavating character of different village with maintaining spatial fabrics of historical villages,and that different classes of building should have corresponding protection approach. Some advices were proposed for repairing and promoting historic and cultural elements,natural environment,and constructing infrastructure in the village,which will provide a reference for the construction of other historical and cultural villages.

关键词： Zheiiang Province historical and cultural villages protection methods

The assembly of a composite based on nano-sheet graphene oxide and montmorillonite

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Petroleum Science 2018年第2期15卷 366-374页

作者： Yu-xiu An Wei-Jia Qu Pei-zhi Yu Jian-Guo Lu School of Engineering and Technology China University of Geosciences(Beijing)Beijing 100083China

Graphene oxide （GO） nano-sheets were synthesized using a modified Hummers＇ method from graphite powder. The Raman spectrum of GO displayed a D-band at 1359 cm-1 and a G-band at 1594 cm-l. The ID/IG value of GO was calculated to be 0.97, suggesting the formation of new sp2 clusters upon reduction. A method was designed to investigate the assembly of the GO/montmorillonite （MMT） composite. After the addition of GO, the typical peaks of montmorillonite in FT-IR spectra shifted, indicating the assembly between GO and MMT. The D-band and G-band reduced sharply in the GO/MMT composite. More importantly, the D-band （1344 cm-1） and G-band （1574 cm 1） shifted significantly and the ID/ IG value of the GO/MMT composite was calculated to be 1.13, showing a change in the GO structure. In the addition of 0.04 wt% GO to MMT, the value of interlayer space （d） was up to 13.0 Ameasured by XRD due to the insertion of GO into MMT. The evident increases in contents of carbon atoms （26.59%） and nitrogen atoms （3.44%） indicate that GO was successfully combined with MMT. The nano-pores and clay sheets were not observed in the SEM image of GO/clay, but obvious wrinkles, while flexible sheets were observed in the typical scanning electron microscopy images of GO. This further proves that GO was combining with clay. The TEM image shows that the GO nano-sheets were tiled on the surface of MMT sheets. This observation suggests that a stable assembly structure was formed between GO sheets and MMT sheets. The change in particle size of MMT with the addition of GO shows that interaction occurred between GO sheets and MMT sheets, which was further confirmed by the results of zeta potential. Adsorption and insertion were the main mechanisms to assemble GO and MMT.

关键词： Drilling fluid Graphene oxide Montmorillonite Wellbore stability

Ferrous methanesulfonate as an efficient and recyclable catalyst for chemoselective synthesis of 1,1-diacetate from aldehydes

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Chinese Chemical Letters 2009年第9期20卷 1034-1038页

作者： Min Wang gui Fu Tian zhi Guo Song Heng Jiang College of Chemistry and Chemical Engineering Bohai University Jinzhou 121000 China Center for Science & Technology Experiment OBohai UniversityJinzhou 121000 China Liaoning Shihua University Fushun 113001 China

Ferrous methanesulfonate catalysing the conversion of aromatic, heteroaromatic, unsaturated, and aliphatic aldehydes to 1,1- diacetates at room temperature under solvent-free condition has been developed. The catalytic activity of seventeen metal methanesulfonates was compared under the same condition, ferrous methanesufonate proved to be the best. It can be easily recovered and reused for several times without distinct deterioration in catalytic activity. During the competitive protection between a ketone and an aldehyde group with Ac20, 1,1-diacetate formed exclusively with the aldehyde group. 2009 Min Wang. Published by Elsevier B.V. on behalf of Chinese Chemical Society. All rights reserved.

关键词： 1,1-Diacetate Aldehyde Chemoselectivity Reusability

STABILITY ANALYSIS OF FINITE ELEMENT METHODS FORTHE ACOUSTIC WAVE EQUATION WITH ABSORBINGBOUNDARY CONDITIONS (PART I)

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Journal of Computational Mathematics 1999年第3期17卷 293-306页

作者： xiu-min Shao zhi-ling Lan(Institute of Mathematics, Academy of Sciences, Beijing 100080, China) 中科院数学所北京

In Part I and Part II of this paper initial-boundary value problems of the acoustic wave equation with absorbing boundary conditions are considered. Their finite element-finite difference computational schemes are proposed. The stability of the schemes is discussed and the corresponding stability conditions are given. Part I and Part II concern the first- and the second-order absorbing boundary conditions, respectively. Finally, numerical results are presented in Part II to show the correctness of theoretical analysis. (Author abstract) 7 Refs.

关键词： stability finite element methods wave equation absorbing boundary conditions

Effect of biofeedback combined with high-quality nursing in treatment of functional constipation

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World Journal of Clinical Cases 2021年第4期9卷 784-791页

作者： xiu Zhao Jin Meng Jin Dai zhi-Tao Yin Department of Anorectal Disease Shenyang Coloproctology HospitalShenyang 110000Liaoning ProvinceChina Department of Constipation Shenyang Coloproctology HospitalShenyang 110000Liaoning ProvinceChina Department of Anorectal Disease Shenyang Hospital of Traditional Chinese MedicineShenyang 110000Liaoning ProvinceChina

BACKGROUND Functional constipation(FC)is a common functional gastrointestinal disease with various clinical *** is a physical and mental disease,which seriously affects patient physical and mental health and quality of *** therapy is the treatment of choice for FC,especially outlet obstructive constipation caused by pelvic floor ***-quality nursing is a new nursing model in modern clinical work and a new concept of modern nursing *** To explore the effect of biofeedback combined with high-quality nursing in the treatment of *** A total of 100 patients with FC admitted to our hospital from March 2015 to July 2019 were selected for clinical *** patients were randomly divided into two groups of 50:Experimental group(biofeedback combined with highquality nursing treatment group)and control group(biofeedback group).RESULTS The constipation symptom score of the experimental group was significantly lower than that of the control group,and the difference was statistically significant(P<0.05).The anal canal resting pressure and initial defecation threshold of the experimental group were significantly lower than those of the control group,and the maximum squeeze systolic pressure of the anal canal of the experimental group was significantly higher than that of the control group(P<0.05).The Self-Rating Anxiety Scale and Zung’s Self-Rating Depression Scale scores of the two groups were significantly lower than before *** Self-Rating Anxiety Scale and Self-Rating Depression Scale scores of the experimental group were significantly lower than those of the control group(P<0.05).The patient satisfaction score of the experimental group was significantly higher than that of the control group(P<0.05).CONCLUSION The application of biofeedback combined with high-quality nursing in the treatment of FC has significant advantages over pure biofeedback treatment,and it is worthy of promotion in clinical work.

关键词： High quality care Functional constipation Biofeedback Pelvic floor dysfunction Self-rating anxiety scale Self-rating depression scale