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Simulation of filling construction of permeable geosynthetic tubes

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Journal of Zhejiang University-Science A(Applied Physics & Engineering) 2010年第6期11卷 425-431页

作者： Wei-chao LIU yi-ping zhang Tao LI Ya-nan YU College of Civil Engineering and Architecture Zhejiang University Hangzhou 310058 China Zhejiang Water Conservancy and Hydropower College Hangzhou 310018 China

The filling construction of permeable geosynthetic tubes is ***,an analytical approach is developed to determine the internal pressure,tension and shape of the cross section of a geosynthetic tube based on its *** analytical solution for the drainage rate of the tube is then *** course of the filling construction is divided into several time intervals and the volume of the tube after each interval is obtained from the equilibrium of flow calculated from the drainage rate and filling *** validity of our analytical approach is tested by comparing our results with previously published experimental *** results of this comparison indicate that our method is applicable for simulating the filling construction of permeable geosynthetic tubes.

关键词： Geosynthetic tube Filling construction Simulation Volume of the tube Drainage rate

Technical comments on rodent spinal cord injuries models

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Neural Regeneration Research 2014年第5期9卷 453-455页

作者： Zoe zhang yi ping zhang Lisa B.E.Shields Christopher B.Shields Department of Neurosurgery University of Minnesota Norton Neuroscience Institute Norton Healthcare

Spinal cord injuries （SCI） in rodents have been created by laceration, contusion, compression, or intramedullary injection of toxic agents. The choice of an appropriate SCI model should be made for each study based on the experimental design, with care taken to avoid unintended complications such as hemorrhage. Technical comments will be made in this communication describing the 1） importance of vertebral stabi- lization, 2） injury preparation, and 3） landmarks to improve the preci- sion and reproducibility of the SCI.

关键词： SCI Technical comments on rodent spinal cord injuries models LISA zhang

Immobilized Ruthenium Catalyst for Carbon Dioxide Hydrogenation

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Chinese Chemical Letters 2006年第8期17卷 1097-1100页

作者： ying Min YU Jin Hua FEI yi ping zhang Xiao Ming ZHENG Institute of Catalysis Zhejiang University Hangzhou 310028 Department of Chemistry Zhejiang Education Institute Hangzhou 310012

Three kinds of cross linked polystyrene resin （PS） supported ruthenium complexes were developed as catalysts for the synthesis of formic acid from carbon dioxide hydrogenation. Many factors, such as the functionalized supports, solvents and ligands, could influence their activities and reuse performances greatly. These immobilized catalysts also offer the industrial advantages such as easy separation.

关键词： Immobilization resin supported Ru catalyst hydrogenation CO2-expanded solvent.

Ruthenium Bisphosphine Catalyst on Functionalized Silica: Novel Efficient Catalyst for Carbon Dioxide Hydrogenation to Formic Acid

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Chinese Chemical Letters 2006年第2期17卷 261-264页

作者： yi ping zhang Jin Hua FEI ying Min YU Xiao Ming ZHENG Institute of Catalysis Xixi Campus Zhejiang University Hangzhou 310028 Department of Chemistry Zhcjiang Education Institute Hangzhou 310012

A novel efficient catalyst for the hydrogenation of carbon dioxide to formic acid ruthenium bisphosphine on functionalized silica was in situ synthesized, affording turnover frequency （TOF） of 1190 h^-1 at 100% selectivity under 80℃ with total pressure of 16.0 MPa. The catalyst can be separated from the reaction mixture easily and reused with moderate loss of activity.

关键词： Immobilized ruthenium silica bis(1,2-diphenylphosphino)ethane (dppe) formic acid.

Recent advances in research on natural product inhibitors of SREBPs

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Traditional Medicine Research 2022年第3期7卷 55-67页

作者： yi-ping zhang Jing Jin ping Li Hua Yang Zu-Guo Zheng State Key Laboratory of Natural Medicines Department of PharmacognosySchool of Traditional Chinese PharmacyChina Pharmaceutical UniversityNanjing 210009China

Sterol regulatory element-binding proteins(SREBPs)are a class of cholesterol-sensitive transcription factors that play important roles in lipid *** product inhibitors of SREBPs have been shown to inhibit the synthesis of free fatty acids and cholesterol,promote the burning of brown fat,and relieve insulin resistance by inhibiting different links during the synthesis,cleavage,and transport of SREBPs,thereby improving obesity,diabetes,atherosclerosis,and other metabolic diseases and *** are numerous Chinese herbal medicines with verified efficacy in the treatment of metabolic diseases,including Coptis chinensis *** Pueraria peduncularis *** diabetes,Pueraria peduncularis Grah.,Epimedium brevicornum Maxim.,and Panax ginseng *** for osteoporosis,and Nelumbo nucifera *** Poria cocos(Schw.)*** ***-day research on the mechanisms underlying the activity of traditional Chinese medicine has indicated that certain chemical components of these traditional preparations can be used to treat metabolic diseases by inhibiting *** in the research on natural product SREBP inhibitors is continuing apace,and the mechanisms of action of certain small molecules have become well *** this study,we review recent progress in the research on natural small-molecule inhibitors of SREBPs,including flavonoids,saponins,triterpenoids,and alkaloids,which we hope will provide a useful reference for future research and development of drugs for the treatment of metabolic diseases.

关键词： sterol-regulatory element-binding protein lipid metabolism metabolic disease natural product traditional Chinese medicine

Effects of recombinant human growth hormone on growth of human gastric carcinoma xenograft model in nude mice

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World Journal of Gastroenterology 2006年第24期12卷 3810-3813页

作者： Dao-Ming Liang Jia-Yong Chen yi zhang ping Gan Jie Lin An-Bao Chen Department of Emergency Surgery of the SecondAffiliated Hospital Kunming Medical College Kunming 650101Yunnan Province China

AIM： To study effects of recombinant human growth hormone （rhGH） on growth of a human gastric carcinoma cell in vivo. METHODS： Experimental mice were divided into control group, rhGH group, oxaliplatin （L-OHP） group and rhGH＋L-OHP group. Cultured human gastric carcinoma cells BGC823 were inoculated into right axilla of nude mice and carcinoma xenograft model was established successfully. Inhibitory rate of xenograft tumor growth was estimated by measuring tumor volume; expression of proliferating cell nuclear antigen （PCNA）, Bax and Bcl-2 proteins of xenograft tumor was detected using immunohistochemical S-P method. RESULTS： Tumor growth inhibitory rate, the positive expression rate of PCNA, Bax and Bcl-2 were 49.3%, 58.2%, 65.2% and 59.2% in rhGH＋L-OHP group respectively; 46.6%, 62.5%, 59.7% and 64.7% in L-OHP group; 5.0%, 82.7%, 23.2% and 82.2% in rhGH group and 0, 77.8%, 23.5% and 80.3% in control group. There was significant difference between rhGH＋L-OHP group （or L-OHP group ） and control group or rhGH group （P 〈 0.05）, whereas there were no significant differences （P 〉 0.05） between L-OHP group and rhGH＋L-OHP group and between rhGH group and control group. CONCLUSION： rhGH does not accelerate the proliferation of human gastric cancer cell in vivo.

关键词： Human growth hormone Stomach neoplasm Nude mice

Intra-continental deformation and tectonic evolution of the West Junggar Orogenic Belt,Central Asia:Evidence from remote sensing and structural geological analyses

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Geoscience Frontiers 2020年第2期11卷 651-663页

作者： Wei-Cui Ding Ting-Dong Li Xuan-Hua Chen Jian-ping Chen Sheng-Lin Xu yi-ping zhang Bing Li Qiang Yang School of Earth Sciences and Resources China University of GeosciencesBeijing 100083China SinoProbe Center Chinese Academy of Geological Sciences and China Geological SurveyBeijing 100037China Center for Hydrogeology and Environmental Geology CGSBaodingHebei 071051China

The West Junggar Orogenic Belt(WJOB)in northwestern Xinjiang,China,is located in the core of the western part of the Central Asian Orogenic Belt(CAOB).It has suffered two stage tectonic evolutions in Phanerozoic,before and after the ocean–continental conversion in Late *** later on intracontinental deformation,characterized by the development of the NE-trending West Junggar sinistral strike-slip fault system(WJFS)since Late Carboniferous and Early Permian,and the NW-trending Chingiz-Junggar dextral strike-slip fault(CJF)in Mesozoic and Cenozoic,has an important significance for the tectonic evolution of the WJOB and the *** this paper,we conduct geometric and kinematic analyses of the WJOB,based on field geological survey and structural interpretation of remote sensing image *** some piercing points such as truncated plutons and anticlines,an average magnitude of^73 km for the left-lateral strike-slip is calculated for the Darabut Fault,a major fault of the *** partial of the displacement should be accommodated by strike-slip fault-related folds developed during the strike-slip *** and curved faults,asymmetrical folds,and irregular contribution of ultramafic bodies,implies potential opposite vertical rotation of the Miao’ergou and the Akebasitao batholiths,resulted from the sinistral strike-slipping along the Darabut *** to conjugate shearing set of the sinistral WJFS and the dextral CJF since Early Mesozoic,superimposed folds formed with N–S convergence in southwestern part of the WJOB.

关键词： Remote sensing Structural analysis Strike-slip fault system Darabut fault West Junggar Central Asian orogenic belt

Perinatal prevalence of birth defects in the Mainland of China,2000–2021:a systematic review and meta-analysis

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World Journal of Pediatrics 2024年第7期20卷 669-681页

作者： Liang-Yu Kang Zi-Rui Guo Wei-Jing Shang Gui-ying Cao yi-ping zhang Qiao-Mei Wang Hai-ping Shen Wan-Nian Liang Min Liu Department of Epidemiology and Biostatistics School of Public HealthPeking UniversityNo.38Xueyuan RoadHaidian DistrictBeijing100191China Vanke School of Public Health Tsinghua UniversityNo.1Tsinghua GardenHaidian DistrictBeijing100084China Department of Maternal and Child Health National Health Commission of the People’s Republic of ChinaNo.1Xizhimenwai South RoadXicheng DistrictBeijingChina Institute of Healthy China Tsinghua UniversityNo.1Tsinghua GardenHaidian DistrictBeijing100084China Key Laboratory of Epidemiology of Major Diseases(Peking University) Ministry of Education BeijingNo.38Xueyuan RoadHaidian DistrictBeijing100191China

Background Although birth defects are of great concern globally,the latest national prevalence has not yet been quantified in *** conducted a systematic review and meta-analysis to estimate the perinatal prevalence of birth defects in the Mainland of China between 2000 and *** We performed a systematic literature search of six databases for relevant articles published between January 1,2000,and March 1,*** included published studies that reported data on the perinatal prevalence of birth defects in the Mainland of *** DerSimonian and Laird random-effects models were used to estimate the pooled prevalence and its 95%confidence interval(CI).We also conducted subgroup analyses and univariable meta-regressions to explore differences in prevalence by time period,geographic region,and other *** We included 254 studies reporting the perinatal prevalence of birth defects and 86 studies reporting only the prevalence of specific types of birth *** on 254 studies covering 74,307,037 perinatal births and 985,115 cases with birth defects,the pooled perinatal prevalence of birth defects was 122.54(95%CI 116.20–128.89)per 10,000 perinatal births in the Mainland of China during 2000–***,the perinatal prevalence of birth defects increased from 95.60(86.51–104.69)per 10,000 in 2000–2004 to 208.94(175.67–242.22)per 10,000 in 2020–*** were also significant disparities among different geographical *** heart defects(33.35 per 10,000),clefts of the lip and/or palate(13.52 per 10,000),polydactyly(12.82 per 10,000),neural tube defects(12.82 per 10,000),and inborn errors of metabolism(11.41 per 10,000)were the five most common types of birth *** perinatal prevalence among males was significantly higher than that among females(β=2.44×10^(−3),P=0.003);a higher perinatal prevalence of birth defects was observed among perinatal births whose mothers were≥35 years(β=4.34×10^(−3),P<0.001).Conclusion Compreh

关键词： Birth defects China Perinatal Prevalence

EROSION　OF　MATERIAL　IN　GROUND　SURFACE　AND　SEDIMENT　yiELD　IN　THE　UPPER　YANGTZE　RIVER

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International Journal of Sediment Research 1996年第1期 43-53页

作者： LIU yi and zhang ping

ＥＲＯＳＩＯＮＯＦＭＡＴＥＲＩＡＬＩＮＧＲＯＵＮＤＳＵＲＦＡＣＥＡＮＤＳＥＤＩＭＥＮＴＹＩＥＬＤＩＮＴＨＥＵＰＰＥＲＹＡＮＧＴＺＥＲＩＶＥＲＬＩＵＹｉａｎｄＺＨＡＮＧＰｉｎｇＡｂｓｔｒａｃｔ：ＣｏｎＳｉｄｅｒｉｎｇｔ... 详细信息

ＥＲＯＳＩＯＮＯＦＭＡＴＥＲＩＡＬＩＮＧＲＯＵＮＤＳＵＲＦＡＣＥＡＮＤＳＥＤＩＭＥＮＴＹＩＥＬＤＩＮＴＨＥＵＰＰＥＲＹＡＮＧＴＺＥＲＩＶＥＲＬＩＵＹｉａｎｄＺＨＡＮＧＰｉｎｇＡｂｓｔｒａｃｔ：ＣｏｎＳｉｄｅｒｉｎｇｔｈｅｅｒｏｓｉｏｎｏｆｇｒｏｕｎｄ...

关键词： SURFACE EROSION GROUND IN MATERIAL OF RIVER SEDIMENT AND THE