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波浪能发电装置垂荡浮子PTO系统的建模与计算

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海岸工程 2024年第2期43卷 79-90页

作者：闻福三丁学用王连胜辛光红李玉超李长青李国徽三亚学院海南三亚572000 浙江大学海南研究院海南三亚572000 海南中南标质量科学研究院海南海口571000 海南三亚国家级珊瑚礁自然保护区管理处海南三亚572000

为了便捷求出垂荡式波浪能发电装置垂荡浮子的平均功率,对现有的设计计算方法进行了研究。基于波浪理论和Froude-Krylov假定法求解波浪力,应用单自由度有阻尼系统受迫振动理论,将波浪激励力作为对垂荡浮体的输入动力,将发电机的电磁阻... 详细信息

为了便捷求出垂荡式波浪能发电装置垂荡浮子的平均功率,对现有的设计计算方法进行了研究。基于波浪理论和Froude-Krylov假定法求解波浪力,应用单自由度有阻尼系统受迫振动理论,将波浪激励力作为对垂荡浮体的输入动力,将发电机的电磁阻力作为主要的阻尼力,建立了质量-弹簧-阻尼振动力学模型,确定了垂荡浮子响应的计算方法,并对实际波浪能发电装置垂荡浮子Power Take Off(PTO)系统列举出计算实例。在算例基础上,对假设条件进行了扩展,应用频率响应曲线、MATLAB软件做出不同参数条件下平均功率三维曲线和输出平均功率数值表,清晰地表明了系统响应状况。研究显示,在波高和频率比一定的条件下,PTO系统平均机械功率随着浮体质量和阻尼力矩的变化具有峰值,围绕峰值区域设计装置的各项参数,能够取得较理想的效果。该建模与计算方法可为实际工程优化设计提供参考。

关键词：波浪能发电垂荡浮子建模计算平均功率峰值优化设计

STUDY ON THE TREATMENT OF 3—PHENOXY—BENZALDEHYDE INDUSTRIAL WASTEWATER WITH POLYMERIC ADSORBENT

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Chinese Journal of Reactive Polymers 1998年第2期7卷 22-31页

作者： ZhuShiyun ChenJinlong Lu Xiaoxiang Zhang Quanxing wang liansheng The State Key Laboratory of Pollution Control and Resource Reuse Department of Environmental Science and EngineeringNanjing UniversityNanjing210093P.R.China

In this paper the two effluents from PBA (3- phenoxy -benzaldehyde) productionprocess were treated by polymeric adsorbent CHA-lll. PBA or PBC(3-phenoxybenzoic acid) was recovered from the wastewater in the process of neutralization. As asecondary treatment method, adsorption with CHA-lll showed better efficency thanPhotocatalytic decomposition and solvent extraction. The optimal technologicalparameters were: adsorption: current velocity: 2.0 BV/hr(bed volume per hour), roomtemperature, desorption: current velocity:10 BV/hr 80℃8% sodium hydroxideaqueous solutions. In conclusion, 90.9% COD in the neutralizing wastewater and98. 4% COD in the hydrolysis wastewater are removed successfully.

关键词： wastewater treatment polymeric adsorbent 3-phenoxy benzaldehyde

HGF percutaneous endocardial injection induces cardiomyocyte proliferation and rescues cardiac function in pigs

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The Journal of Biomedical Research 2010年第3期24卷 198-206页

作者： Zhengxian Tao Bo Chen Yingming Zhao Hongwu Chen liansheng wang Yonghong Yong Kejiang Cao Qifeng Yu Danian Ke` Hua wang Zuze Wu Zhijian Yang Department of Cardiology the First Affiliated Hospital of Nanjing Medical University Nanjing 210029 Jiangsu Province China. MieroPort Medical (Shanghai) CO. Ltd. Shanghai 201203 China Department of Experimental Hematology Beijing Institute of Radiation Medicine Beijing 100850 China

Objective：To investigate the effect of cardiomyocyte proliferation induced by human hepatocyte growth factor（HGF）in pigs with chronic myocardial infarction（CMI）.Methods：A steerable,deflectable 7F catheter incorporating a 27-guage needle was advanced percutaneously to the left ventricular myocardium of 18 pigs with *** were randomized（1：1：1）to receive adenoviral vector HGF（total dose,1×10^10 genome copies）,which was administered as five injections into the infarcted myocardium（total,1.0 mL）,or saline,or Ad-null（control groups）.Injections were guided by Ensite NavX left ventricular electroanatomical *** and cyclin proteins were detected by western blot and immunoprecipitation *** and immunohistochemical analysis determined proliferating *** perfusion and cardiac function were estimated by Gated-Single Photon Emission Computed Tomography（G-SPECT）.Results：Western blot analyses showed that HGF were predominantly expressed in the infarct core and border in the myocardium of the infarcted heart.G-SPECT analysis indicated that the HGF group had better cardiac function and myocardial perfusion four weeks after the injection of Ad-HGF than before the injection of *** treatment there were more proliferating cardiomyocytes in the HGF group compared to either of the control ***,the HGF group myocardial samples expressed higher levels of p-Akt,cyclin A,cyclin E,cyclin D1,cdk2,cdk4 than those in the control ***：The over-expression of HGF activates pro-survival pathways,induces cardiomyocyte proliferation,and improves the perfusion and function of the porcine CMI heart.

关键词： HGF EnSite NavX cardiac function gene therapy proliferation myocardial infarction

Study on the vertical deformations induced by terrestrial water storage changes in Huang-Huai-Hai river basin

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Geodesy and Geodynamics 2024年第4期15卷 352-365页

作者： liansheng Deng Yugang Xiao Qusen Chen Feifei Liao Zhao Li School of Electrical and Electronic Information Engineering Hubei Polytechnic UniversityHuangshi 435003China Hubei Luojia Laboratory GNSS Research CenterWuhan UniversityWuhan 430079.China Changjiang Spatial Information Technology Engineering Co. Ltd.Wuhan 430010China

Terrestrial water storage(TWs)variations are associated with water mass movements,which may cause the deformation displacements of the Global Navigation Satellite System(GNSS)*** study investigates the spatio-temporal Tws variations and addresses the relationship between deformation variations observed in the Huang-Huai-Hai River Basin(HHHRB)and local hydrological *** indicate that the vertical velocities at the GNSS stations induced by TWS changes are relatively small,and the impacts of the terrestrial water storage changes are mainly reflected in the changes of seasonal *** there is a downward TWS trend from 2011 to 2022 in most HHHRB areas,velocities from the vertical displacements of both Gravity Recovery and Climate Experiment(GRACE)and GRACE Follow-On(GFO)and the GNSS reflect that the HHHRB is undergoing an uplift process,while the magnitude of the GRACE/GFO derived velocities is much smaller than that of the GNSS *** hydrological deformations estimated from GRACE/GFO and GNSS measurements reveal that the TWS-derived displacements can explain 54.5%of the GNSS seasonal variations,with the phases of terrestrial water storage advancing by about one month relative to GNss common signal ***,the decrease of the groundwater storage in the HHHRB has been accelerating since *** reaching its lowest level around mid-2020,it began to rise rapidly,which might be closely related to the implementation of the South-North Water Transfer Central Project.

关键词： Terrestrial waterstorage GRACE GNSS Vertical deformations Huang-Huai-Hairiverbasin

Genotoxicity　of　substituted　nitrobenzenes　and　the　quantitative　structure－activity　relationship

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Journal of Environmental Sciences 1996年第1期8卷 103-109页

作者： Huang Qingguo Liu Yongbin wang liansheng Han Shuokui(Department of Environmental Science and Engineering,Nanjing University,Nanjing 210093,China)Yang Jun(Jiangsu Metallurgy Institute.Nanjing 210007,China)

The genotoxicity of 22 substituted nitrobenzenes were evaluated by the chromosome aberrations test in in vitro human peripheral lymphocytes.18 of 22 compounds exhibit genotoxic *** structure-activity relationship model was established to correlate the genotoxicity of substituted nitrobenzenes with the characteristics of the substituents on benzene ring.

关键词： quantitative structure-activity relationship(QSAR) substituted nitrobenzenes genotoxicity.

Performance Study of a Novel Ejector-Cascade Refrigeration System with Regenerator

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Journal of Thermal Science 2024年第5期33卷 1618-1629页

作者： CHI Weikai YANG Qichao CHEN Xiaonan LIU Guangbin ZHAO Yuanyang LI liansheng College of Electromechanical Engineering Qingdao University of Science and TechnologyQingdao 266061China

In this paper,a novel NH_(3)/CO_(2)ejector-cascade refrigeration system with regenerator is proposed,which can recycle the waste heat at the outlet of the *** establishing the mathematical model of the system,the theoretical energy and exergy analysis are carried out and compared with the conventional cascade refrigeration *** is concluded that compared with the conventional cascade refrigeration system,the novel ejector-cascade refrigeration system with regenerator has the advantages of less power consumption of the compressor,less component exergy destruction,high system performance,and is more suitable for working at a lower *** the working conditions studied in this paper,compared with the conventional cascade refrigeration system,the COP of the novel ejector-cascade refrigeration system with regenerator is increased by9.58%;the exergy efficiency is increased by 9.50%,and the optimal evaporation temperature is about-45℃.

关键词： cascade refrigeration system ejector regenerator system performance thermodynamic analysis

Diagnostic and prognostic value of minor elevated cardiac troponin levels for percutaneous coronary intervention-related myocardial injury:a prospective,single-center and double-blind study

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The Journal of Biomedical Research 2014年第2期28卷 98-107页

作者： Min Zhang Huiwei He Ze-Mu wang Zhihui Xu Ningtian Zhou Zhengxian Tao Bo Chen Chunjian Li Tiebing Zhu Di Yang liansheng wang Zhijian Yang Department of Gardiology the First Affiliated Hospital of Nanjing Medical University Department of Geriatrics the Second Affiliated Hospital of Nanjing Medical University Department of Geriatrics the First Affiliated Hospital of Nanjing Medical University

Cardiac troponin-I （cTnI） and -T （cTnT） are sensitive and specific markers of myocardial injury. However, the role of increased cTnI and cTnT in percutaneous coronary intervention （PCI）-related myocardial injury remains controversial. In this prospective, single-center and double-blind study, we aimed to determine the diagnostic and prognostic value of cTnI as well as cTnT （cTns） in PCI-related myocardial injury in a Chinese population. A total of 1,008 patients with stable angina pectoris and non-ST-segment elevation acute coronary syndrome were recruited. The levels of cTnI and cTnT were examined before and after PCI. All patients were followed up for 26± 9 months to observe the incidence of major adverse cardiac events （MACEs）. Our results showed that post- PCI cTnI and/or cTnT levels were increased to more than the 99^th percentile upper reference limit （URL） in 133 （13.2%） patients, among which 22 （2.2%） were more than 5 × 99^th percentile URL. By univariate analysis, an elevation in cTns after PCI was not an independent predictor of increased MACEs, HR 1.35 （P = 0.33, 95% CI： 0.74-2.46）. In conclusion, our data demonstrate that the incidence of PCI-related myocardial injury is not common in a Chinese population and minor elevated cTns levels may not be a sensitive prognostic marker for MACEs.

关键词： percutaneous coronary intervention (PCI) troponins PCI-related myocardial injury major adversecardiac events diagnosis prognosis

Improved methodology for efficient establishment of the myocardial ischemia-reperfusion model in pigs through the median thoracic incision

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The Journal of Biomedical Research 2023年第4期37卷 302-312页

作者： Liuhua Zhou Jiateng Sun Tongtong Yang Sibo wang Tiankai Shan Lingfeng Gu Jiawen Chen Tianwen Wei Di Zhao Chong Du Yulin Bao Hao wang Xiaohu Lu Haoliang Sun Meng Lv Di Yang liansheng wang Department of Cardiology the First Affiliated Hospital of Nanjing Medical UniversityNanjingJiangsu 210029China Department of Cardiac Surgery the First Affiliated Hospital of Nanjing Medical UniversityNanjingJiangsu 210029China Medical Experimental Animal Center Nanjing Medical UniversityNanjingJiangsu 210029China

To investigate the feasibility and effectiveness of establishing porcine ischemia-reperfusion models by ligating the left anterior descending(LAD)coronary artery,we first randomly divided 16 male Bama pigs into a sham group and a model *** anesthesia,we separated the arteries and ***,we rapidly located the LAD coronary artery at the beginning of its first diagonal branch through a mid-chest ***,we loosened and released the ligation line after five minutes of ***,we ligated the LAD coronary artery in situ two minutes later and loosened the ligature 60 min after *** with the sham group,electrocardiogram showed multiple continuous lead ST-segment elevations,and ultrasound cardiogram showed significantly lower ejection fraction and left ventricular fractional shortening at one hour and seven days post-operation in the model ***-four hours after the operation,cardiac troponin T and creatine kinase-MB isoenzyme levels significantly increased in the model group,compared with the sham *** and eosin staining showed the presence of many inflammatory cells infiltrating the interstitium of the myocardium in the model group but not in the sham *** staining revealed a significant increase in infarct size in the ischemia/reperfusion *** eight pigs in the model group recovered with normal sinus heart rates,and the survival rate was 100%.In conclusion,the method can provide an accurate and stable large animal model for preclinical research on ischemia/reperfusion with a high success rate and homogeneity of the myocardial infarction area.

关键词： coronary artery ligation myocardial ischemia-reperfusion injury Bama pig animal model

Maximum Correntropy Criterion Based Robust Kalman Filter

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Maximum Correntropy Criterion Based Robust Kalman Filter