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| 1 | Stability analysis of dielectric elastomer film actuator显示文摘Dielectric elastomer (DE) is the most promising electroactive polymer material for smart actuators. When a piece of DE film is sandwiched between two compliant electrodes with a high electric field,due to the electrostatic force between the two electrodes,the film expands in-plane and contracts out-of-plane so that its thickness becomes thinner. The thinner thickness results in a higher electric field which inversely squeezes the film again. When the electric field exceeds the critical value,the dielectric field breaks down and the actuator becomes invalid. An elastic strain energy function with two material constants is used to analyze the stability of the dielectric elastomer actuator based on the nonlinear electromechanical field theory. The result shows that the actuator improves its stability as the ratio k of the material constants increases,which can be applied to design of actuators. Finally,this method is extended to study the stability of dielectric elastomers with elastic strain energy functions containing three and more material constants. | LIU YanJu LIU LiWu SUN ShouHua ZHANG Zhen LENG JinSong | 2009 | Science China(Technological Sciences)2009，52，9： | 7 |
| 2 | Water, heat fluxes and water use efficiency measurement and modeling above a farmland in the North China Plain显示文摘Net radiation (Rn), water vapor flux (LE), sensible heat flux (Hs) and soil heat flux (G)were measured above a summer maize field with the eddy-covariance technique, simulation and analysis of water, heat fluxes and crop water use efficiency were made with the RZ-SHAW model at the same time in this study. The results revealed significant diurnal and seasonal variability of water vapor flux for summer maize. Most part of Rn was consumed by the evapotranspiration of the summer maize. The proportion of water vapor flux to net radiation ((LE/Rn) increased with the crop development and peaked around milk-filling stage with a value of 60%, a slightly lower than that obtained by the RZ-SHAW model. Daily evapotranspiration estimated by the model agreed with the results measured with the eddy-covariance technique, indices of agreement (IA) for hourly water vapor fluxes simulated and measured were above 0.75, root mean square errors (RMSE) were no more than 1.0. Diurnal patterns of Hs showed the shape of inverted 'U' shifted to the forenoon with a maximum value around 11:30 (Beijing time), while LE exhibited an inverted 'V' with a maximum value at around 13:00, about an hour later than Hs. Diurnal change of CO2showed an asymmetrical 'V' curve and its maximal rates occurred at about 11:30. Variations of water use efficiency during the phonological stages of the summer maize showed a rapid increase with the photosynthetic photon flux density (PPFD) after sunrise, a state of equilibrium around 10:00 followed a decrease. Maximum values of water use efficiency were 24.3, and its average value ranged from 7.6 to 10.3 g kg-1. | QIN Zhong, YU Qiang, XU Shouhua, HU Bingmin, SUN Xiaomin, LIU Enmin, WANG Jishun, YU Guirui & ZHU Zhilin Ecology academy, College of Life Science, Zhejiang University, Hangzhou 310029,China Institute of Geographic Sciences and Natural Resources Research, Chinese Academy of Sciences, Beijing 100101, China College of Science, Zhejiang University, Hangzhou 310029, China | 2005 | Science China Earth Sciences2005，48，z1： | 5 |
| 3 | Vertical motions of tide gauge stations near the Bohai Sea and Yellow Sea显示文摘A modified Gauss-Markov model with weighted constraints was constructed by combining satellite altimeter and tide gauge records. Vertical motion rates of nine tide gauge stations around the Bohai Sea and Yellow Sea are estimated. This is the first time systematic estimates have been derived in this region. Downward trends were seen at the six tide gauge stations located at Tanggu, Longkou, Laohutan, Bayuquan, Xiaochangshan, and Yantai; with vertical motion rates of-1.82±0.50,-1.65±0.46,-0.88±0.42,-0.58±0.62,-0.13±0.43, and-0.01±0.43 mm/yr, respectively. Upward trends were seen at the three tide gauge stations located at Qinhuangdao, Huludao and Chengshantou; with vertical motion rates of 1.12±0.46, 0.55±0.49 and 0.26±0.44 mm/yr, respectively. There was significant subsidence in Tanggu and Longkou, and a rising trend in Qinhuangdao. According to our results, the rate of sea level rise calculated from these tide gauge records can be improved using a more accurate measurement of the land elevation accounting for lifting or subsidence. The model derived can be used to estimate vertical motions of tide gauge stations, and can be widely applied to revise the benchmark levels of tide gauges. | LIU ShouHua CHEN ChangLin LIU KeXiu MU Lin WANG Hui WU XinRong ZHANG JianLi DUAN XiaoFeng GAO Jia | 2015 | Science China Earth Sciences2015，58，12： | 4 |
| 4 | Improving the estimate of wind energy input into the Ekman layer within the Antarctic Circumpolar Current显示文摘Based on the data and method offered by Liu et al.(2009),the direct wind and Stokes drift-induced energy inputs into the Ekman layer within the Antarctic Circumpolar Current(ACC) area are reestimated since the results of the former have been proved to be underestimated.And the result shows that the total rate of energy input into the Ekman-Stokes layer within the ACC area is 852.41 GW,including 649.75 GW of direct wind energy input(76%) and 202.66 GW of Stoke drift-induced energy input(24%).Total increased energy input,due to wave-induced Coriolis-Stokes forcing added to the classical Ekman model,is 52.05 GW,accounting for 6.5% of the wind energy input into the classical Ekman layer.The long-term variability of direct wind and Stokes drift-induced energy inputs into the Ekman layer within the ACC is also investigated,and the result shows that the Stokes drift hinders the decadal increasing trend of direct wind energy input.Meanwhile,there is a period of 4-5 a in the energy spectrums,as same as the Antarctic circumpolar wave. | ZHANG Yuming WU Kejian ZHANG Xiaoshuang BI Fan SONG Zhaoyang LIU Shouhua | 2013 | Acta Oceanologica Sinica2013，32，3： | 3 |
| 5 | Hydrothermal Synthesized Co-Ni3S2 Ultrathin Nanosheets for Efficient and Enhanced Overall Water Splitting显示文摘We used the one-step hydrothennal controlled synthesis method for Co-Ni3S2 ultrathin nanosheets grown directly on nickel foam(NF).The as-synthesized Co-Ni3S2/NF showed eiilianced activities in the hydrogen evolution reaction(HER),oxygen evolution reaction(OER)and better overall water splitting(OWS)efficiency than the iin-doped Ni3S2/NF.the voltage of Co-Ni3S2/NF for OWS was only 1.58 V at the current density of 10 niA/cm^2 and with long time(>30 h)current output during the current-density(i-t)test.The good i-t pertonnance was also observed in both HER and OER processes.Additionally,the Co-Ni3S2/NF showed a large current density(>1A/cm^2)for both HER and OER.Wlien the current densities reached 100 and 1000 mA/cm^2,the required overpotentials tor Co-Ni3S2/NF were 0.35 and 0.75 V for OER and 0.30 and 0.85 V for HER.Therefore,after introducing Co,the activity of Ni3S2-based material was strongly enhanced. | JIAN Juan YUAN Long LI He LIU Huanhuan ZHANG Xinghui SUN Xuejiao YUAN Hongming FENG Shouhua | 2019 | Chemical Research in Chinese Universities2019，35，2： | 2 |
| 6 | Defect-engineered Mn_(3)O_(4)/CNTs composites enhancing reaction kinetics for zinc-ions storage performance显示文摘The designing of reasonable nanocomposite materials and proper introduction of defect engineering are of great significance for the improvement of the poor electronic conductivity and slow reaction kinetics of manganese-based compounds. Herein, we report manganese-deficient Mn_(3)O_(4) nanoparticles which grow in-situ on highly conductive carbon nanotubes(CNTs)(denoted as DMOC) as an advanced cathode material for aqueous rechargeable zinc-ion batteries(RAZIBs). According to experimental and calculation results, the DMOC cathode integrates the advantages of enriched Mn defects and small particle size. These features not only enhance electronic conductivity but also create more active site and contribute to fast reaction kinetics. Moreover, the structure of DMOC is maintained during the charging and discharging process, thus benefiting for excellent cycle stability. As a result, the DMOC electrode delivers a high specific capacity of 420.6 m A h g^(-1) at 0.1 A g^(-1) and an excellent cycle life of 2800 cycles at 2.0 A g^(-1) with a high-capacity retention of 84.1%. In addition, the soft-packaged battery assembled with DMOC cathode exhibits long cycle life and high energy density of 146.3 Wh kg^(-1) at 1.0 A g^(-1) . The results are beneficial for the development of Zn/Mn_(3)O_(4) battery for practical energy storage. | Xiuli Guo Hao Sun Chunguang Li Siqi Zhang Zhenhua Li Xiangyan Hou Xiaobo Chen Jingyao Liu Zhan Shi Shouhua Feng | 2022 | Journal of Energy Chemistry2022，31，5： | 1 |
| 7 | Subsurface damage in optical substrates显示文摘 | Jian Shen Shouhua Liu Kui Yi Hongbo He Jianda Shao Zhengxiu Fan | 2005 | Optik - International Journal for Light and Electron Optics2005，，6： | 1 |
| 8 | Characteristics and possible causes of the seasonal sea level anomaly along the South China Sea coast显示文摘Based on sea level, air temperature, sea surface temperature(SST), air pressure and wind data during 1980–2014,this paper uses Morlet wavelet transform, Estuarine Coastal Ocean Model(ECOM) and so on to investigate the characteristics and possible causes of seasonal sea level anomalies along the South China Sea(SCS) coast. The research results show that:(1) Seasonal sea level anomalies often occur from January to February and from June to October. The frequency of sea level anomalies is the most in August, showing a growing trend in recent years. In addition, the occurring frequency of negative sea level anomaly accounts for 50% of the total abnormal number.(2) The seasonal sea level anomalies are closely related to ENSO events. The negative anomalies always occurred during the El Ni?o events, while the positive anomalies occurred during the La Ni?a(late El Ni?o) events. In addition, the seasonal sea level oscillation periods of 4–7 a associated with ENSO are the strongest in winter, with the amplitude over 2 cm.(3) Abnormal wind is an important factor to affect the seasonal sea level anomalies in the coastal region of the SCS. Wind-driven sea level height(SSH) is basically consistent with the seasonal sea level anomalies. Moreover, the influence of the tropical cyclone in the coastal region of the SCS is concentrated in summer and autumn, contributing to the seasonal sea level anomalies.(4) Seasonal variations of sea level, SST and air temperature are basically consistent along the coast of the SCS, but the seasonal sea level anomalies have no much correlation with the SST and air temperature. | WANG Hui LIU Kexiu GAO Zhigang FAN Wenjing LIU Shouhua LI Jing | 2017 | Acta Oceanologica Sinica2017，36，1： | 1 |
| 9 | Subsurface damage in optical substrates显示文摘 | Jian Shen Shouhua Liu Kui Yi Hongbo He Jianda Shao Zhengxiu Fan | 2005 | Optik - International Journal for Light and Electron Optics2005，，： | 1 |
| 10 | Subsurface damage in optical subatrates显示文摘 | Shen Jian Liu Shouhua Yi Kui | 2005 | Optik2005，116，6： | 1 |
| 11 | Oscillation Cri-teria for Even - Order Half - Linear Functional Differ-ential Equation with damping显示文摘 | Zhang Quanxin Liu Shouhua Gao Li | 2011 | Applied Mathemat-ics Letters2011，，24： | 1 |
| 12 | Production and in vitro antioxidant activity of exopolysaccharide by a mutant, Cordyceps militaris SU5-08显示文摘 | Rongshan Lin Honghong Liu Suqian Wu Lifei Pang Mengshi Jia Keming Fan Shouhua Jia Le Jia | 2012 | International Journal of Biological Macromolecules (-)2012，，1： | 1 |
| 13 | The Legends of Celestial Master Zhang and Jataka Tales显示文摘道教的张天师传说与佛教的佛本生故事均以两种宗教信奉的神圣偶像为中心人物来编织故事,都与本国的民间口头叙事有密切关联。二者因植根于不同的文化土壤而风格迥异:首先,佛本生故事通过虚构前生世界,将佛陀化为各种角色以展现其不凡品格,寄寓佛教义理;张天师传说则以张天师降妖除魔、护佑百姓为主题。其次,佛本生故事由佛教徒按照固定的程式将现成的民间故事简单改造而来;张天师传说则渊源于中国古代的'神仙传',由中国近现代民众的口头鲜活叙事构成。 | Shouhua LIU Xiaohui DING | 2015 | Comparative Literature:East & West2015，，2： | 0 |
| 14 | Dimensional reduction enhances photocatalytic carbon dioxide reduction performance of metal-organic frameworks显示文摘Metal-organic frameworks(MOFs)have shown significant potential as photocatalysts.It has been widely assumed that all catalytic active sites within MOFs are functional in photocatalytic reactions but for a three-dimensional MOF,whether the internal catalytic active sites can effectively absorb light and actively contribute to photocatalytic reactions remains to be explored.In this context,we synthesized a two-dimensional nanosheet MOF(2D-MOF)and a three-dimensional bulk MOF(3D-MOF)composed of Zr^(6) clusters and tetracarboxylic porphyrin(TCPP)by the approach described in the literature.Re(bpy)(CO)^(3)Cl(bpy=2,2’-bipyridine),which has remarkable CO_(2) photoreduction ability,was introduced to the two MOFs to create two new photocatalysts 2D-MOF-Re and 3D-MOF-Re,respectively.Photocatalytic CO_(2) reduction experiments show that based on the equal number of catalytic active sites,the CO turnover number(TON)of 2D-MOF-Re reaches 27.8 in 6 h,which is 50 times that of 3D-MOF-Re.The result shows that certain catalytic active sites inside the bulk MOF are inactive due to the inability to absorb light.This study illuminates the potential of the dimensional reduction approach in the design of photocatalysts to exploit the capabilities fully. | Kaiyue Ma Jixin Li Jinlu Liu Chunguang Li Zhan Shi Shouhua Feng | 2024 | Nano Research2024，17，5： | 0 |
| 15 | The relationship between platelet-derived growth factor expression and angiogenesis/lymphangiogenesis in cervical cancer显示文摘This paper is aimed to examine if changes in platelet-derived growth factor(PDGF)expression at different stages of cervical cancer are related to the variation in blood vessel density(BVD)and lymphatic vessel density(LVD)to evaluate the relationship between PDGF expression and stages and metastasis of cervical cancer.Polymerase chain reaction(PCR)and RT-PCR were used to detect the expression levels of PDGF in 45 cervical cancer tissue samples(the experimental group).The samples were immunohistochemically stained with mono-clonal antibodies D2-40 and CD34,and BVD and LVD were measured.The expressions of PDGF-A,-B,and-D were all higher in the experimental group than in the control group(P<0.05);no significant difference was found in the expression of PDGF-C between the experi-mental group and the control group(P>0.05).PDGF-A and-B expression was positively related with BVD and LVD(P<0.01,R=0.49,0.527,0.327,0.68).The expression levels of PDGF-C and-D were not significantly related with BVD and LVD.At the early stage of cervical cancer,BVD and LVD were significantly higher than in the controls(P<0.01).The BVD and LVD in tissues in the surrounding areas of cervical cancer were significantly higher than in tissues at cancer center,and LVD was related to lymph node metastasis(P<0.001).BVD and LVD were not associated with the differentiation and pathological stages of cervical cancer.The expressions of PDGF-A,-B,and-D in cervical cancer were closely related with the clinical stages of cervical cancer.PDGF-A and-B were intimately associated with the lymph node metastasis and prognosis of cervical cancer. | Guocheng LIU Shouhua YANG Zehua WANG | 2009 | Frontiers of Medicine2009，3，4： | 0 |
| 16 | Amplitude variation with offset and azimuth inversion to predict and evaluate coal seam fracture parameters显示文摘Amplitude variation with offset and azimuth(AVOA)inversion is a mainstream method for predicting and evaluating fracture parameters of conventional oil and gas reservoirs.However,its application to coal seams is limited because of the specificity of the equivalent media model for coal—also,the traditional seismic acquisition system employed in coal fields falls within a narrow azimuth.In this study,we initially derived a P‒P wave reflection coefficient approximation formula for coal seams,which is directly expressed in terms of fracture parameters using the Schoenberg linear-slide model and Hudson model.We analyzed the P‒P wave reflection coefficient’s response to the fracture parameters using a two-layer forward model.Accordingly,we designed a twostep inversion workflow for AVOA inversion of the fracture parameters.Thereafter,high-density wide-azimuth pre-stack 3D seismic data were utilized for inverting the fracture density and strike of the target coal seam.The inversion accuracy was constrained by Student’s tdistribution testing.The analysis and validation of the inversion results revealed that the relative fracture density corresponds to fault locations,with the strike of the fractures and faults mainly at 0°.Therefore,the AVOA inversion method and technical workflow proposed here can be used to efficiently predict and evaluate fracture parameters of coal seams. | Haibo WU Shujie ZHU Qinjie LIU Shouhua DONG Yanhui HUANG Pingsong ZHANG | 2023 | Frontiers of Earth Science2023，17，2： | 0 |
| 17 | One-step Synthesis of 5-Ethyl-2-methylpyridine from NH4HCO3 and C2H5OH Under Hydrothermal Condition显示文摘 | TIAN Zhenzhen ZHANG Dong GUO Biao TIAN Ge LIU Xinxin YUE Huijuan FENG Shouhua | 2015 | Chemical Research in Chinese Universities2015，31，2： | 0 |
| 18 | A Proposed Frequency Spectrum for Fully Developed Wind Waves by Revisiting P-M Spectrum显示文摘It is generally believed that the equilibrium range of wind wave spectrum is in the form of the-4 rather than-5 power law.However,in the widely applied P-M spectrum the equilibrium range is given in the form of-5 power law.In the present paper,a spectrum for full development of wind waves is proposed using the form of the Neumann spectrum,but adopting the-4 power law for the equilibrium range.The proposed spectrum has been verified with NDBC buoy data and could be a substitute for the P-M spectrum. | LIU Shouhua JIA Ning GUAN Changlong | 2011 | Journal of Ocean University of China2011，10，4： | 0 |
| 19 | Fast design of complementary coding signals显示文摘Starting from the definition of Basic Complementary Coding(CC)Pairs,this paper presents a scheme of designing CC signals for practical applications.In comparison with the seheme based directly on thedefinition of CC pairs,the present scheme can speed up the operation pro-cess for finding CC pairs by 24 ×2N/2times when the number of codingunits N>4. | LIU Shouhua ZHANG Shuying(Institute of Acoustics Academia sinica) | 1990 | Chinese Journal of Acoustics1990，9，4： | 0 |
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