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| 1 | CAVITATED BIFURCATION FOR COMPOSED COMPRESSIBLE HYPER-ELASTIC MATERIALS显示文摘The cavitated bifurcation problem in a solid sphere composed of two compressible hyper-elas-tic materials is examined.The bifurcation solution for the composed sphere under a uniform radial tensileboundary dead-load is obtained.The bifurcation curves and the stress contributions subsequent to the cavita-tion are given.The right and left bifurcation as well as the catastrophe and concentration of stresses are ana-lyzed.The stability of solutions is discussed through an energy comparison. | Ren Jiusheng Cheng Changjun | 2002 | Acta Mechanica Solida Sinica2002，15，3： | 16 |
| 2 | Wetting Patterns and Nitrate Distributions in Layered-Textural Soils Under Drip Irrigation显示文摘Laboratory experiments were conducted in different sequence and thickness of the soil layers to investigate the effects of layered-textural soils on wetting patterns and water and nitrate distributions from a surface point source under various combinations of application rate and applied volume. Three layered soils, including a sandy-over-sandy loam (SL), a sandy loam-over-sandy (LS), and a sandy loam-sandy-sandy loam (LSL), and two uniform soils (a uniform sandy loam and a uniform sandy soil) were tested. In the experiments, the application rate was varied from 0.69 to 3.86 L h-1 and the applied volume from 5.7 to 12.1 L. The experimental results demonstrated that the wetting patterns and water and nitrate distributions were greatly affected by the sequence and thickness of soil layers as well as the application rate and volume applied. An interface existing in the layered soils, whether a fine-over-coarse or a coarse-over-fine, had a common feature of limiting downward water movement and of increasing horizontal water movement. For the fine-over-coarse layered soils of LS and LSL, water and nitrate were uniformly distributed at a given depth in the top layer soil. For a coarse-over-fine layered soil of SL, however, water accumulated in the sublayer soil underneath the interface and a zone of lower nitrate concentration was observed. The effect of application rate on water distribution pattern was dependent upon soil layering. A minor influence of application rate on water distribution for the fine-over-coarse layered soils (LS and LSL) than for the uniform soils was found. To obtain a greater wetted depth through selecting the emitters having a smaller application rate, which is a common method in the system design for a uniform soil, may not be necessarily applied for the layered soils. Measurements of nitrate distribution showed that nitrate accumulated toward the boundary of the wetted volume for both the uniform and the layered soils. This suggests the importance of optimal management of drip fertigation because nitrate is susceptible to the movement out of the root zone by mismanagement of fertigation. The information obtained from this research is useful in the design, operation, and management of a drip fertigation system. | LI Jiusheng JI Hong-yan LI Bei LIU Yu-chun | 2007 | Agricultural Sciences in China2007，6，8： | 11 |
| 3 | Advances and applications of electrohydrodynamics显示文摘Electrohydrodynamics (EHD) has been applied in many areas, such as EHD enhanced heat transfer, EHD pump, electrospray mass spectrometry, electrospray nano- technology, etc. The basic theories underlying these applications and a brief review of the EHD advances are presented in this paper. As electrospray is an important branch of EHD, the applications of electrospray are particularly discussed. Finally, this paper gives some suggestions for the future research and development. | CHEN Xiaopeng CHENG Jiusheng YIN Xiezhen | 2003 | Chinese Science Bulletin2003，48，11： | 9 |
| 4 | Non-isothermal crystallization kinetics of Nylon 10T and Nylon 10T/1010 copolymers:Effect of sebacic acid as a third comonomer显示文摘Nylon 10 T and Nylon 10T/1010 samples were synthesized by direct melt polymerization. The non-isothermal crystallization kinetics of Nylon 10 T and Nylon 10T/1010 was investigated by means of differential scanning calorimetry(DSC). Jeziorny equation and Mo equation were applied to describe the non-isothermal crystallization kinetics of the Nylon 10 T and the Nylon 10T/1010. The activation energies for non-isothermal crystallization were obtained by Vyazovkin's method and Friedman's method, respectively. These results showed that Jeziorny equation and Mo equation well described the non-isothermal crystallization kinetics of the Nylon 10 T and the Nylon 10T/1010. It was found that the values of the activation energy for non-isothermal crystallization of the Nylon 10T/1010 were lower than those of the Nylon 10 T at a given temperature or relative crystallinity degree,which revealed that crystallization ability of the Nylon 10T/1010 was higher. The crystal morphology was observed by means of a polarized optical microscope(POM) and X-ray diffraction(XRD). It was found that the addition of sebacic acid comonomer not only did not change the crystal form of the Nylon 10 T, but also significantly increased the number and decreased the size of spherulites. Comparing with the Nylon 10 T, the crystallization rate was increased with the addition of the sebacic acid comonomer. | Zhongqiang Wang Guosheng Hu Jingting Zhang Jiusheng Xu Wenbo Shi | 2017 | Chinese Journal of Chemical Engineering2017，25，7： | 6 |
| 5 | Finite elastic torsional instability of incompressible thermo-hyperelastic cylinder显示文摘不可压缩的 thermo-hyperelastic 的扭力的不稳定性圆柱的杆,使遭到了到轴的拉长和大扭转,在有限弹性的框架以内被检验。当柱体被一个足够地大的学位拉长并且扭动时,结可以在一个点突然形成。这固有的有弹性的不稳定性与最小的势能原则被分析,扭转的临界数值被获得。象张力的力量和转矩一样的压力的分发被学习。温度变化的效果明确地被讨论。 | Jiusheng Ren Changjun Cheng | 2006 | Acta Mechanica Sinica2006，22，2： | 4 |
| 6 | A potential approach to replace sulfurized olefins with borate ester containing xanthate group in lubricating oil显示文摘To develop a potential substitute for sulfurized olefins, a borate ester derivative containing xanthate group (titled BXT) was synthesized and characterized. Meanwhile, its tribological properties in rape-seed oil were evaluated using four-ball tribometer. The results indicate that BXT shows excellent tri-bological capacity such as load-carrying, friction-reducing and antiwear property. Moreover, the syn-thesized compound has no noticeable odor, shows little corrosion to copper, and exhibits better ther-mal stability compared with sulfurized olefins. In order to study the action mechanism of BXT in friction process, analysis of the worn surface was carried out using a three-dimensional non-contact surface profilometer and XPS analyzer. | WANG YongGang LI JiuSheng REN TianHui | 2008 | Chinese Science Bulletin2008，53，7： | 3 |
| 7 | Tribological behavior of nanocarbon materials with different dimensions in aqueous systems显示文摘Due to the widespread use of nanocarbon materials(NCMs),more researchers are studying their tribological performances.In this work,the tribological behaviors of the following five types of NCMs with different geometric shapes were evaluated in a novel oil‐in‐water system:spherical fullerenes(C60,0D),tubular multi‐walled carbon nanotubes(MWCNT,1D),sheet graphene oxide(GO,2D),sheet graphene oxide derivative(Oct‐O‐GO,2D),and lamellar graphite(G,3D).Among these,GO with two types of oxidation degrees,i.e.,GO(1),GO(2),and Oct‐O‐GO(1)were synthesized and characterized using Fourier‐transform infrared spectroscopy,Raman spectroscopy,x‐ray diffraction,thermogravimetric analysis,scanning electron microscopy,and contact angle measurements.The load‐carrying capacity of the NCM emulsions were evaluated using a four‐ball test machine,and the lubrication performances were investigated using a high‐frequency reciprocating friction and wear tester with a sliding distance of 1,800 mm under different loads(50 N and 100 N)at 0.5 Hz.The results revealed that the Oct‐O‐GO(1)emulsion exhibited the best load‐carrying capacity,and the best friction‐reducing and anti‐wear properties compared to other emulsions.Moreover,the anti‐wear advantage was more prominent under high load conditions,whereas the other emulsions exhibited a certain degree of abrasive or adhesive wear.The lubrication mechanism was determined through the analysis of worn surfaces using scanning electron microscopy/energy‐dispersive x‐ray spectroscopy,micro‐Raman spectroscopy,and x‐ray photoelectron spectroscopy.The results revealed that during frictional sliding,the ingredients in the emulsion can absorb and react with the freshly exposed metal surface to form surface‐active films to protect the surfaces from abrasion.Moreover,it was found that the higher the amount of ingredients that contain alkyl and O‐H/C=O,the better was the lubrication performance in addition to an increase in the carbon residue in the tribofilm generated on the meal surface. | Hongmei YANG Jiusheng LI Xiangqiong ZENG | 2020 | Friction2020，8，1： | 2 |
| 8 | Modeling the effects of plastic film mulching on irrigated maize yield and water use efficiency in sub-humid Northeast China显示文摘In sub-humid Northeast China,plastic film mulching(PFM)is increasingly used with drip irrigation system in maize(Zea mays L.)to cope with seasonal droughts and low temperatures during seedling stage.Although there were several studies showing the benefits of PFM on maize production in the region,quantification of the effects of PFM in sub-humid Northeast China are still lacking.Hybrid-Maize model has a special version that can not only simulate the effects of PFM on reduction of soil evaporation and rise of topsoil temperature,but also simulate the effects of PFM on crop development and other physiological processes.This paper reports how to verify the Hybrid-Maize model against observations and then applying the model to quantify effects of PFM on grain yield and water use efficiency(WUE)under irrigated scenarios.The Hybrid-Maize model was added the heating effects of PFM on rising surface-soil temperature and promoting subsequent crop development by establishing equations between surface-soil temperature and air temperature before V6 stage.A 3-year field experiment including maize growth and yield data measured at a drip-irrigated field in Heilongjiang Province was used to serve the model calibration.The simulated results indicated that the Hybrid-Maize model performed well in simulation of seasonal soil water storage and in-season aboveground dry matter in three years,but overestimated the leaf area index(LAI)for both treatments and underestimated the final aboveground dry matter at maturity for mulched treatments.Although the Hybrid-Maize model overestimated the grain yield and WUE,it did still reflect the effects of PFM on increasing grain yield and WUE during the three growing seasons.The average simulated grain yield and WUE for mulched treatments were 8%and 13%greater compared to non-mulched treatments using 30 years weather data,which were in agreement with observations that average grain yield and WUE was 11%and 14%increased by PFM,respectively.For evapotranspiration(ET),the average simulated ET for mulched treatments was 22 mm less than non-mulched treatments mainly due to less soil evaporation.For simulated irrigation requirements,at most 69 mm of irrigation water could be saved by PFM.In conclusion,PFM with drip irrigation could improve irrigated maize production in sub-humid Northeast China. | Liu Yang Yang Haishun Li Yanfeng Yan Haijun Li Jiusheng | 2017 | International Journal of Agricultural and Biological Engineering2017，10，5： | 2 |
| 9 | Three Dimensional Simulation of the Steady Solar Wind in Carrington Rotation 1935显示文摘A three-dimensional MHD simulation is conducted to study the steady solar wind in Carrington Rotation (CR) 1935 by using the three-dimensional numerical magnetohydrodynamic (MHD) model introduced by Feng et al The numerical results demonstrate that the neutral current sheet has two peaks and two valleys, which is consistent with the result of PFSS model at Wilcox Solar Observatory (WSO). The obtained proton number density at 2.5 Rs is of the same order of magnitude as the result estimated from K-coronal brightness during the CRs 1733-1742 in 1983 made by Wei et al. The radial velocity profile along heliocentric distance is consistent with that of low solar wind speed deduced by Sheeley and Wang et al. However, it is not able to reproduce the fast-speed flow in coronal holes and slow solar wind in streamers because of oversimplified energy equation adopted in our model. Future efforts must be made to remedy this deficiency. | XIANG Changqing FENG Xueshang YAO Jiusheng | 2006 | 空间科学学报2006，26，1： | 2 |
| 10 | DYNAMIC CHARACTERISTICS IN INCOMPRESSIBLE HYPERELASTIC CYLINDRICAL MEMBRANES显示文摘In this paper,the dynamic characteristics are examined for a cylindrical membrane composed of a transversely isotropic incompressible hyperelastic material under an applied uniform radial constant pressure at its inner surface.A second-order nonlinear ordinary differential equation that approximately describes the radial oscillation of the inner surface of the membrane with respect to time is obtained.Some interesting conclusions are proposed for different materials,such as the neo-Hookean material,the Mooney-Rivlin material and the Rivlin-Saunders material.Firstly,the bifurcation conditions depending on the material parameters and the pressure loads are determined.Secondly,the conditions of periodic motion are presented in detail for membranes composed of different materials.Meanwhile,numerical simulations are also provided. | Datian Niu Xuegang Yuan Changjun Cheng Jiusheng Ren | 2010 | Acta Mechanica Solida Sinica2010，23，5： | 2 |
| 11 | 应用耳后带肌蒂皮瓣修复外伤性耳廓部分缺损显示文摘目的 :探讨修复外伤性耳廓部分缺损的方法。方法 :利用耳后带肌蒂皮瓣修复外伤性耳廓部分缺损患者 11例。结果 :随访 3~ 12个月 ,无一例发生皮瓣坏死 ,耳廓外形基本恢复正常。结论 :耳后带肌蒂皮瓣修复外伤性耳廓部分缺损 ,操作简单易行 ,耳廓外形恢复良好 ;供皮区位于耳后 ,瘢痕隐蔽 ;耳廓修复后整体颜色相近。有较好的临床应用价值。 | WU Jiang BAO Xueli CHU Jiusheng ZHU Yong 朱勇 鲍学礼 储九圣 吴江 | 2001 | 临床耳鼻咽喉科杂志2001，15，1： | 2 |
| 12 | Isothermal Crystallization Kinetics of Nylon 10T and Nylon 10T/1010 Copolymers:Effect of Sebacic Acid as a Third Comonomer显示文摘Nylon 10T and nylon 10T/1010 samples were synthesized by direct melt polymerization.The isothermal crystallization kinetics of nylon 10T and nylon 10T/1010 was investigated by means of differential scanning calorimetry(DSC).The crystallization kinetics under isothermal condition has been analyzed by the Avrami equation.It was found that the Avrami equation was well-suited to describe the isothermal crystallization kinetics,combined with the results of the Turnbull-Fisher equation.The values of T_m^0 and K_g were obtained by Hoffman-Weeks and Lauritzen-Hoffman equations,respectively.The activation energies for isothermal crystallization of nylon 10T and nylon 10T/1010 were determined using the Arrhenius equation and found to be-123.24 and-81.86 kJ·mol^(-1),respectively,which reveals that the crystallization ability of nylon 10T/1010was lower than that of nylon 10T during the isothermal crystallization process.The crystal morphology was observed by means of polarized optical microscopy(POM)and X-ray diffraction(XRD).It was found that the addition of sebacic acid comonomer did not change the crystal form of nylon 10T,but significantly increased the number and decreased the size of spherulites. | 王忠强 胡国胜 ZHANG Jingting XU Jiusheng SHI Wenbo | 2018 | Journal of Wuhan University of Technology(Materials Science)2018，33，5： | 2 |
| 13 | FINITE DEFORMATION OF A CLASS OF RECTANGULAR RUBBER RINGS SUBJECTED TO END AXIAL LOADS显示文摘The problem of finite deformation of an incompressible rectangular rubber ring with an internal rigid body, where the ring is subjected to equal axial loads at its two ends, is examined. A reasonable mathematical model is formulated by using the nonlinear field theory and the implicit analytical solutions are derived. Then numerical simulations are implemented to further illustrate the results and obtain some meaningful conclusions. The deformation of the lateral surface of the ring becomes larger with the increasing axial loads, the decreasing ratio of the inner and outer radii and the increasing height of the ring. | Wenzheng Zhang Xuegang Yuan Hongwu Zhang Jiusheng Ren | 2012 | Acta Mechanica Solida Sinica2012，25，2： | 2 |
| 14 | Tribological Evaluation of S-(1H-Benzo-Triazole-1-yl) Methyl N,N-Dialkyldithiocarbamates as Additives in Rapeseed Oil显示文摘 | Jiusheng L Yanyan Z Tianhui R | 2002 | Wear2002，253，： | 1 |
| 15 | Wetting patterns and nitrogen distributions as affected by fertigation strategies from a surface point source显示文摘 | Li Jiusheng Zhang Jianjun Rao Minjie | 2004 | Agricultural Water Management2004，67，2： | 1 |
| 16 | Terahertz modulator using photonic crystals显示文摘 | Li Jiusheng | 2007 | Optics Communications2007，269，1： | 1 |
| 17 | The areal distribution of soil moisture under sprinkler irrigation 显示文摘 | Jiusheng Li Hirodhi Kawano | 1996 | Agricultural Water Management1996，32，： | 1 |
| 18 | Simulation of nitrate distribution under drip irrigation using artificial neural networks显示文摘 | Jiusheng Li R E Yoder L O Odhiambo J Zhang | 2004 | Irrig Sci2004，23，： | 1 |
| 19 | Landscape Pattern of Ancient Terraces in Huangping County and Slopeto-Terrace Strategy显示文摘Formation and development of ancient terraces proves that slope-to-terrace project is a signifi cant measure for conserving water and soil in mountainous areas. UAV remote sensing technology was applied to obtain RS images with a resolution ratio of 0.1–0.5 m, Arc GIS was applied for data processing, and Fragstats3.3 was used to calculate characteristic indexes, to study landscape pattern of 4 ancient terraces in Huangping County, Guizhou Province. The results showed that terrace landscapes and woodland landscapes in the study area account for nearly 80% of the whole landscape(terrace 30%, woodland 50%); mean area of single fi eld is mainly concentrated between 100 m^2 and 200 m^2, and height between 0.7 m and 1.7 m, breadth 0.5 m and 0.6 m; most terraces have a gradient of 5–25°, accounting for 70% of the total number of fi eld. The water and soil conservation concept in the ancient terraces provides references for the slope-to-terrace project and the water and soil loss control of slope farmland. | LAN An'jun ZHAN Fengli FU Yuwen ZHONG Jiusheng LIU Fayong YOU Boyu | 2016 | Journal of Landscape Research2016，8，2： | 1 |
| 20 | Terahertz wave switch based on silicon photonic crystals 显示文摘 | LI Jiusheng HE Jinlong HONG Zhi | 2007 | Applied Optics(S1559-128X)2007，46，22： | 1 |
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