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| 1 | Deformation reinforcement theory and its application to high arch dams显示文摘In this paper,the deformation reinforcement theory(DRT) proposed by the authors is elaborated with a new definition of instability that an elasto-plastic structure is not stable if it cannot satisfy simultaneously equilibrium condition,kinematical admissibility and constitutive equations under the prescribed loading.Starting from the definition,a proof is established to the principle of minimum plastic complementary energy for failured structures.It is revealed that the principle of mini-mum plastic complementary energy results in relaxed constitutive equations,especially,yield conditions.It is demonstrated with case studies that many key issues in arch dam design,e.g.,global stability,dam-toe reinforcement,dam-toe cracking,dam-abut-ment reinforcement,can be well solved within the framework of the deformation reinforcement theory.The structural global stability can be described by the curve of the plastic complementary energy vs overloading factor.The unbalanced-forces obtained by elasto-plastic FEM can be used as the basis of analysis of global stability,dam-heel cracking,dam-toe anchorage and reinforcement of faults of high arch dams and their foundations. | YANG Qiang,LIU YaoRu,CHEN YingRu & ZHOU WeiYuan State Key Laboratory of Hydroscience and Hydraulic Engineering,Tsinghua University,Beijing 100084,China | 2008 | Science China(Technological Sciences)2008，51，S2： | 21 |
| 2 | Potential of Pteris vittata L. for phytoremediation of sites co-contaminated with cadmium and arsenic: The tolerance and accumulation显示文摘领域调查和温室实验被进行学习 Pteris vittata L 的忍耐。(中国刹车) 到镉(Cd ) 和它为重新调停的可行性,地点与 Cd 和砷共同污染(作为) 。结果显示出那 P。vittata 能在与 Cd 的 80 mg/kg 刺并且容忍的壶土壤幸存象全部的 Cd 的 301 mg/kg 和 diethyltriaminepenta 醋酸(DTPA ) 的 26.8 mg/kg 一样大在地条件下面的可引出的 Cd。在复叶的 Cd 的最高的集中在这个领域里是在 920 mg As/kg 和 98.6 mg Cd/kg 的全部的土壤集中下面的 186 mg/kg,而就在温室下面的 2.6 mg/kg 调节。P 的生态型。vittata 在 Cd 的忍耐和累积被区分,并且他们中的一些不能仅仅高容忍土壤 Cd 的集中,而且在他们的复叶的 Cd 的积累的高集中。由 P 的砷举起和交通。vittata 没在底层被禁止(≤ 20 mg/kg ) Cd 增加。没有 Cd 的增加,比作处理,集中被 103.8% 在 20 mg Cd/kg 增加的复叶,与 6434 mg/kg 的高水平。结果建议了 P 的 Cd 容忍的生态型。是有效地提取的 vittata 和从这个地点的 Cd 与 Cd 并且作为共同污染,并且可能习惯于重新调停并且重新生长这类地点。 | XIAO Xiyuan CHEN Tongbin AN Zhizhuang LEI Mei HUANG Zechun LIAO Xiaoyong LIU Yingru | 2008 | Journal of Environmental Sciences2008，20，1： | 11 |
| 3 | Methods of computed tomography screening and management of lung cancer in Tianjin: design of a population-based cohort study显示文摘Objective: European lung cancer screening studies using computed tomography(CT) have shown that a management protocol based on measuring lung nodule volume and volume doubling time(VDT) is more specific for early lung cancer detection than a diameter-based protocol. However, whether this also applies to a Chinese population is unclear. The aim of this study is to compare the diagnostic performance of a volume-based protocol with a diameter-based protocol for lung cancer detection and optimize the nodule management criteria for a Chinese population.Methods: This study has a population-based, prospective cohort design and includes 4000 participants from the Hexi district of Tianjin, China. Participants will undergo low-dose chest CT at baseline and after 1 year. Initially, detected lung nodules will be evaluated for diameter and managed according to a routine diameter-based protocol(Clinical Practice Guideline in Oncology for Lung Cancer Screening, Version 2.2018). Subsequently, lung nodules will be evaluated for volume and management will be simulated according to a volume-based protocol and VDT(a European lung nodule management protocol). Participants will be followed up for 4 years to evaluate lung cancer incidence and mortality. The primary outcome is the diagnostic performance of the European volume-based protocol compared to diameter-based management regarding lung nodules detected using low-dose CT.Results: The diagnostic performance of volume-and diameter-based management for lung nodules in a Chinese population will be estimated and compared.Conclusions: Through the study, we expect to improve the management of lung nodules and early detection of lung cancer in Chinese populations. | Yihui Du Yingru Zhao Grigory Sidorenkov Geertruida H.de Bock Xiaonan Cui Yubei Huang Monique D.Dorrius Mieneke Rook Harry J.M.Groen Marjolein A.Heuvelmans Rozemarijn Vliegenthart Kexin Chen Xueqian Xie Shiyuan Liu Matthijs Oudkerk Zhaoxiang Ye | 2019 | Cancer Biology & Medicine2019，16，1： | 7 |
| 4 | Characteristic Temperatures of Waxy Crude Oils显示文摘Gel point or pour point is widely used to evaluate the low temperature flowability of crude oil. However, it is not adequate to describe the gelling properties of waxy crude oils under flow conditions with gel point or pour point, since the rheological behavior of crude oils is dependent on shear history. Waxy crude oils tend to gel at a low temperature. Based on gelation theory, the characteristic temperature of waxy crude oil was determined by analyzing viscosity-temperature data. Two mathematical models were developed for calculating characteristic temperatures of virgin crude oils and pour point depressants (PPD) beneficiated crude oils, respectively. By using these two models, the characteristic temperatures of crude oils that have experienced shearing and thermal histories can be predicted. The model for predicting the characteristic temperature of virgin crude oils has an average relative deviation of 4.5%, and all predicted values have a deviation within 2 ℃. Tested by 42 sets of data, the prediction model for crude oil treated with PPD has a high accuracy, with an average relative deviation of 4.2%, and 95.2 percent of predicted values have a deviation within 2 ℃. These two models provide useful ways for predicting the flowability of crude oils in pipelines when only wax content, wax appearance point and gel point are available. | Zhu Yingru Zhang Jinjun Li Hongying Chen Jun | 2007 | Petroleum Science2007，4，3： | 6 |
| 5 | Development and Prospects for Energy Saving Technology in Oil & Gas Fields,China显示文摘Current state of energy saving technology in China's oil and gas fields System optimization To optimize the oil-gas field surface engineering system is critical to improve the efficiency of oil and gas field system.To adapt to the changes in development of old oil and gas fields,all oilfields are adjusted and reconstructed;a set of optimized and simplified modes and technical measures are developed. | Chen Youwang Yu Jiqing Lin Ran Zhu Yingru Liu Feijun | 2010 | China Oil & Gas2010，17，4： | 2 |
| 6 | Stability and reinforcement analyses of high arch dams by considering deformation effects显示文摘The strict definition and logical description of the concept of structure stability and failure are presented. The criterion of structure stability is developed based on plastic complementary energy and its variation. It is presented that the principle of minimum plastic complementary energy is the combination of structure equilibrium, coordination condition of deformation and constitutive relationship. Based on the above arguments, the deformation reinforcement theory is developed. The structure global stability can be described by the relationship between the global degree of safety of structure and the plastic complementary energy. Correspondingly, the new idea is used in the evaluations of global stability, anchorage force of dam-toe, fracture of dam-heel and treatment of faults of high arch dams in China. The results show that the deformation reinforcement theory provides a uniform and practical theoretical framework and a valuable solution for the analysis of global stability, dam-heel cracking, dam-toe anchorage and reinforcement of faults of high arch dams and their foundations. | Qiang Yang Yaoru Liu Yingru Chen Weiyuan Zhou | 2010 | Journal of Rock Mechanics and Geotechnical Engineering2010，2，4： | 1 |
| 7 | On monolithic stability and reinforcement analysis of high arch dams显示文摘Monolithic stability safety and reinforcement based on monolithic stability are very important for arch dam design. In this paper, the issue is addressed based on deformation reinforcement theory. In this approach, plastic complementary energy norm can be taken as safety index for monolithic stability. According to deformation reinforcement theory, the areas where unbalanced force exists require reinforcement, and the required reinforcement forces are just the unbalanced forces with opposite direction. Results show that areas with unbalanced force mainly concentrate in dam-toes, dam-heels and faults. | YANG Qiang CHEN YingRu LIU YaoRu | 2007 | Science China(Technological Sciences)2007，50，z1： | 1 |
| 8 | Performance analysis andparametric optimum criteria of an irreversible Atkinsonheatengine显示文摘 | ZHAO Yingru CHEN Jincan | 2006 | Applied Energy2006，83，8： | 1 |
| 9 | Optimum performance analysis of an irreversible Diesel heat engine affected by variable heat capacities of working fluid显示文摘 | ZHAO Yingru CHEN Jincan | 2007 | Energy Conversion and Management2007，48，： | 1 |
| 10 | Performance anal-ysis and parametric optimum Criteria of anirrevers-ible Atkinson heat-engine 显示文摘 | Yingru Zhao Jinean Chen | 2006 | Applied Energy2006，83，： | 1 |
| 11 | Performance analysis of an irreversible Miller heat engine and its optimum criteria 显示文摘 | Yingru Zhao Jincan Chen | 2007 | Applied Thermal Engineering2007，27，1112： | 1 |
| 12 | Performance analysis and parametrie optimum criteria of an irreversible Atkinson heatengine 显示文摘 | Yingru Zhao Jincan Chen | 2006 | Applied Energy2006，83，： | 1 |
| 13 | Maximum power and corresponding efficiency of an irreversible blue heat engine for harnessing waste heat and salinity gradient energy显示文摘In this study,a novel irreversible cyclic model of a capacitive mixing blue heat engine mainly consisting of super capacitors,charging and discharging circuits,a heat source,as well as two water sources with given salt concentrations is established for harvesting salinity gradient energy and waste heat.Additionally,the effects of the charging voltage and ratio of the minimum to maximum surface electric charge density on the thermodynamic efficiency and power output of the cycle are discussed.The maximum power output of the cycle is calculated.The optimized ranges of efficiency and power output as well as the temperatures of two isothermal processes are determined.It is established that during the isoelectric quantity process,there is not only an increase in thermal voltage owing to the temperature difference,but also an increase in concentration voltage owing to the salinity gradient.Consequently,the blue heat engine can obtain higher energy conversion efficiency than a conventional heat engine.When the temperature ratio of the heat source to the heat sink is 1.233,the maximum efficiency can reach approximately36%.The results obtained can promote the application of capacitive mixing technology in real life,reducing the consumption of fossil fuels. | LIN Jian XIE Shan JIANG ChenXing SUN YiFei CHEN JinCan ZHAO YingRu | 2022 | Science China(Technological Sciences)2022，65，3： | 1 |
| 14 | Optimaum performance analysis of an irreversible Diesel heat engine affected by variable heat capacities of working fluid显示文摘 | Yingru Zhao Jincan Chen | 2007 | Energy Conversion and Management2007，48，： | 1 |
| 15 | High yield preparation of graphene oxide from small graphite flakes via an improved Hummers rrmthod with a simple purification process显示文摘 | Chen Ji Li Yingru Huang Liang | 2015 | Car bon2015，81，： | 1 |
| 16 | Effect of Detail Nursing Intervention on Headache and Negative Emotion in Patients with Subarachnoid Hemorrhage显示文摘objective: to explore the effect of detail nursing intervention on headache and negative emotion in patients with subarachnoid hemorrhage. Methods: the clinical data of 100 cases of subarachnoid hemorrhage from January 2015 to January 2017 of neurosurgery in our hospital were randomly divided into the control group and the experimental group, Detail nursing intervention in experimental group, Comparison of two groups of clinical nursing effects. Results the duration of hospitalization and headache in the experimental group were shorter than those in the control group. Fewer headaches than control group (P<0.05) Less headache than control group (p<0.05). Results: the results of SAS and SDS scores were significantly lower than those in the control group (p<0.05) after nursing in the experimental group. Conclusion: the patients with subarachnoid hemorrhage receive detailed nursing intervention;contribute to the alleviation of their headache symptoms, Relieves the patient of negative emotional problems. | Yangyang Zhao Jingyi Yang Zhenyao Wang Yingru Chen | 2018 | Journal of Advances in Medicine Science2018，1，3： | 0 |
| 17 | ESTIMATE OF DISCRETE NONLINEARITIES IN A MAINLY LINEAR DYNAMIC SYSTEM显示文摘The class of system considered is a single degree of freedom undamped vibrating system with a clearance in which the dynamical behavior is described by a state-space representation in real time. The direct identification technique for the estimate of a clearance and other parameters in the system is presented in terms of least squares method and step-by-step iteration approach. For numerical simulation purpose, the simulated data are achieved by corrupting the modeled responses. The mathematical algorithm, which is put forward, has proven to be effective through a practical numerical example. | Chen Manru,Guo Qiang (Faculty of Design ,Northwest University of Light Industry) Chen Yingru (Hebei Highway Engineering Construction Group Co. Ltd.) | 2001 | Chinese Journal of Mechanical Engineering2001，14，3： | 0 |
| 18 | Solution-Processed Graphene Composite Films as Freestanding Platinum-Free Counter Electrodes for Bendable Dye Sensitized Solar Cells显示文摘硫磺酸处理 poly (3,4-ethylenedioxythiophene ):(styrenesulfonate ) poly, /less-defective 减少了 graphene 氧化物(ST-PEDOT : PSS/L-rGO ) 合成电影经由一条处理答案的线路被准备并且当染料的相反的电极敏化太阳能电池(DSSC ) ,使用了。这些铂(磅)- 并且免费相反的电极展出了的透明传导性的氧化物(TCO ) 强壮的催化活动和优秀灵活性,不在 10000 以后在他们的表电阻显示出明显的变化弯曲骑车。有 TiO 2 nanotube/Ti 网孔 photoanode 和 ST-PEDOT 的综合伪固态的 DSSC 设备: PSS/L-rGO 相反的电极展出了大约 1.8% 的精力变换效率(η
) 。它也在在 10 公里的小弯曲半径为 1000 个周期弯曲以后显示了优秀机械稳定性和耐久性。高灵活性,低费用和有效催化活动做 ST-PEDOT : 答应的 PSS/L-rGO 合成电影为灵活 DSSC 阻止电极。 | Qinqin Zhou Shan Chen Miao Zhang Liduo Wang Yingru Li Gaoquan Shi | 2016 | Chinese Journal of Chemistry2016，34，1： | 0 |
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