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| 1 | Effects of antiviral therapy on hepatitis B virus reactivation and liver function after resection or chemoembolization for hepatocellular carcinoma显示文摘 | Xiang‐Ming Lao Guangyu Luo Liang‐Tao Ye Cheng Luo Ming Shi Dian Wang Rongping Guo Minshan Chen Shengping Li Xiaojun Lin Yunfei Yuan | 2013 | Liver Int2013,,4: | 3 |
| 2 | The Chinese Urban-rural Dual Economic Structure Model and Analysis显示文摘Based on the characteristics of urban-rural dual economic structure in China,we build a dynamic endogenous urban-rural dual economic model closely linked to China's reality,and carry out mathematical economics analysis of optimized conditions for urban and rural sectors. The main results show that:(i) The labor growth rate of urban-rural sectors must be greater than the time discount rate,or else there would be a vicious cycle of diminishing returns in the sectors;(ii) The accumulation rate of physical capital and human capital of urban-rural sectors,and the rate of technological progress,need to be greater than the corresponding depreciation rate plus the time discount rate,otherwise there would be a vicious cycle of diminishing returns in the sectors;(iii) The low accumulation rate in the rural sector,and the occurrence of labor outflow,human capital loss and lack of investment,will expand income gap between urban and rural areas,which is a reason for solidification of urban-rural dual economic structure. | Xiuchuan XU Shengping SHI Qinghua HUANG | 2014 | Asian Agricultural Research2014,6,1: | 2 |
| 3 | Economic Analysis on Protection of Farmers' Benefits Based on Market of Agricultural Means of Production and Agricultural Products显示文摘Influenced by many factors,farmers remain very unfavorable position in market transaction and thus fail to ensure their reasonable benefits.In accordance with basic theory of microeconomics,this paper analyzes mutual relation between market of agricultural means of production and agricultural product market,compares economic decisions of agricultural means of production enterprises and agricultural product circulation service providers in monopoly condition and perfect competitive market,expounds influence of monopoly position of agricultural means of production enterprises and agricultural products service providers on economic benefits of farmers,and elaborates weak position and economic damage of farmers in transaction with various economic entities.Through analysis,it further recognizes necessity for protection of farmers'benefits and puts forward corresponding countermeasures:(1)regulating providers of agricultural means of production;(2)strengthening construction of agricultural product market circulation system;(3)improving organization of farmers;(4)setting up and improving production subsidy system of farmers. | De CHEN Dongmei XIANG Shengping SHI | 2013 | Asian Agricultural Research2013,5,11: | 1 |
| 4 | Microwave preparation of Ti-containing mesoporous materials:apphcation as catalysts for transesterification显示文摘 | Shi Yun Wang Shengping Ma Xinbin | | 0,,: | 1 |
| 5 | Microwave synthesis,characterization and transesterification activities of Ti-MCM-41显示文摘 | Wang Shengping Shi Yun Ma Xinbin | | 0,,: | 1 |
| 6 | Genome-wide association study reveals candidate genes for gummy stem blight resistance in cucumber显示文摘Gummy stem blight(GSB),caused by Didymella bryoniae,is a serious fungal disease that leads to decline in cucumber yield and quality.The molecular mechanism of GSB resistance in cucumber remains unclear.Here,we investigated the GSB resistance of cucumber core germplasms from four geographic groups at the seedling and adult stages.A total of 9 SNPs related to GSB resistance at the seedling stage and 26 SNPs at the adult stage were identified,of which some are co-localized to previously mapped Quantitative trait loci(QTLs)for GSB resistance(gsb3.2/gsb3.3,gsb5.1,and gsb-s6.2).Based on haplotype analysis and expression levels after inoculation,four candidate genes were identified within the region identified by both Genome-wide association study(GWAS)and previous identified QTL mapping,including Csa3G129470 for gsb3.2/gsb3.3,Csa5G606820 and Csa5G606850 for gsb5.1,and Csa6G079730 for gsb-s6.2.The novel GSB resistant accessions,significant SNPs,and candidate genes facilitate the breeding of GSB resistant cucumber cultivars and provide a novel idea for understanding GSB resistance mechanism in cucumber. | Jianan Han Shaoyun Dong Yanxia Shi Zhuonan Dai Han Miao Baoju Li Xingfang Gu Shengping Zhang | 2023 | Horticultural Plant Journal2023,9,2: | 1 |
| 7 | Ti incorporation in MCM-41 mesoporous molecular sieves using hydrothermal synthesis显示文摘包含钛的 mesoporous 材料(Ti-MCM-41 ) 被热水的合成获得。如此的材料是活跃催化剂让 dimethyl 盐和酚的 transesterification 生产 diphenyl 盐。在催化过程理解 Ti 的角色,有不同 Si/Ti 比率的 Ti-MCM-41 样品(从 5 ~ 100 ) 被准备,样品被红外线的光谱学,紫外可见的光谱学,和氨温度规划了的 Fourier 变换分析解吸附作用。Ti 被合并到 MCM-41 的框架并且形成了弱路易斯酸地点,这被结束。另外,当钛的数量增加了, Ti (IV ) 地点的数字增加了。X 光检查粉末衍射, N2 吸附解吸附作用和传播电子显微镜学结果证明 Ti-MCM-41 样品有单音维的毛孔的六角形的安排。很多 Ti (IV ) 地点结合了 mesoporous 结构和大毛孔直径为 transesterification 是有利的 Ti-MCM-41 的催化性质。 | Shengping WANG Changqing MA Yun SHI Xinbin MA | 2014 | Frontiers of Chemical Science and Engineering2014,8,1: | 1 |
| 8 | Synthesis and characterization of novel room temperature vulcanized (RTV) silicone rubbers using Vinyl-POSS derivatives as cross linking agents显示文摘 | Dongzhi Chen Shengping Yi Weibing Wu Yalan Zhong Jun Liao Chi Huang Wenjuan Shi | 2010 | Polymer2010,,17: | 1 |
| 9 | Real-time trajectory optimization for powered planetary landings based on analytical shooting equations显示文摘Traditionally,numerical trajectory integration for shooting equation calculation and iterations for shooting with randomly guessed initial solutions deteriorate the real-time performance of indirect methods for on-board applications.In this study,the indirect method is improved to achieve real-time trajectory optimization of fuel-optimal powered planetary landings with the help of analytical shooting equation derivations and a practical homotopy technique.Specifically,the contributions of this paper are threefold.First,the analytical expressions for shooting equation calculation are derived to replace the traditional time-consuming trajectory integration.Consequently,the computational efficiency is significantly improved.Second,the original three-dimensional landing problem is connected with a simplified one-dimensional problem that only involves the vertical dynamics,and its analytical solution is obtained based on Pontryagin’s minimum principle.Third,starting with the analytical solution,the accurate solution of the original landing problem can be obtained through an adaptive homotopy process.Simulation results of Earth landing scenarios are given to substantiate the effectiveness of the proposed techniques and illustrate that the developed method can obtain a fuel-optimal landing trajectory in 5 ms with 100%success rate. | Lin CHENG Peng SHI Shengping GONG Zhenbo WANG | 2022 | Chinese Journal of Aeronautics2022,35,7: | 1 |
| 10 | Analysis of Theoretical Basis of Direct Subsidies for Grain Production显示文摘Financial distribution to compensate grain production reflects governmental macro-control on grain production and supply. With the reference of agricultural basic theory,agricultural multi-function theory,economic externality theory,public finance and other theories,this article points out that direct subsidies for grain production is reasonable and necessary with six main theoretical basis,namely fundamentality,multi-function,positive externality of grain production,particularity of grain supply and demand,grain safety being closely linked with national security and basic function of service-oriented government. | Shengping SHI Xiaorong LUO Hongjing LI | 2014 | Asian Agricultural Research2014,6,1: | 0 |
| 11 | In-situ formation of Ti-Mo biomaterials by selective laser melting of Ti/Mo and Ti/Mo_(2)C powder mixtures:A comparative study on microstructure,mechanical and wear performance,and thermal mechanisms显示文摘Ti-Mo alloys/composites are expected to be the next-generation implant material with low moduli but without toxic/allergic elements.However,synthesis mechanisms of the Ti-Mo biomaterials in Selective Laser Melting(SLM)vary according to raw materials and fundamentally influence material performance,due to inhomogeneous chemical compositions and stability.Therefore,this work provides a comparative study on microstructure,mechanical and wear performance,and underlying thermal mechanisms of two promising Ti-Mo biomaterials prepared by SLM but through different synthesis mechanisms to offer scientific understanding for creation of ideal metal implants.They are(i)Ti-7.5 Mo alloys,prepared from a conventional Ti/Mo powder mixture,and(ii)Ti-7.5 Mo-2.4 Ti C composites,in-situ prepared from Ti/Mo_(2)C powder mixture.Results reveal that the in-situ Ti-7.5 Mo-2.4 Ti C composites made from Ti/Mo_(2)C powder mixture by SLM can produce 61.4%moreβphase and extra Ti C precipitates(diameter below 229.6 nm)than the Ti-7.5 Mo alloys.The fine Ti C not only contributes to thinner and shorterβcolumnar grains under a large temperature gradient of 51.2 K/μm but also benefits material performance.The in-situ Ti-7.5 Mo-2.4 Ti C composites produce higher yield strength(980.1±29.8 MPa)and ultimate compressive strength(1561.4±39 MPa)than the Ti-7.5 Mo alloys,increasing by up to 12.1%.However,the fine Ti C with an aspect ratio of 2.71 dominates an unfavourable rise of elastic modulus to 91.9±2 GPa,44.7%higher than the Ti-7.5 Mo alloys,which,nevertheless,is still lower than the modulus of traditional Ti-6 Al-4 V.While,Ti C and its homogeneous distribution benefit wear resistance,decreasing the wear rate of the in-situ Ti-7.5 Mo-2.4 Ti C composites to 6.98×10^(-4)mm^3 N^(-1)m^(-1),which is 36%lower than that of the Ti-7.5 Mo alloys.Therefore,although with higher modulus than the Ti-7.5 Mo alloys,the SLM-fabricated in-situ Ti-7.5 Mo-2.4 Ti C composites can expect to provide good biomedical application potential in cases where combined good strength and wear resistance are required. | Qimin Shi Shoufeng Yang Yi Sun Yifei Gu Ben Mercelis Shengping Zhong Bart Van Meerbeek Constantinus Politis | 2022 | Journal of Materials Science & Technology2022,,20: | 0 |
| 12 | Optical Fibre Communication Feature Analysis and Small Sample Fault Diagnosis Based on VMD-FE and Fuzzy Clustering显示文摘To solve the problems of a few optical fibre line fault samples and the inefficiency of manual communication optical fibre fault diagnosis,this paper proposes a communication optical fibre fault diagnosis model based on variational modal decomposition(VMD),fuzzy entropy(FE)and fuzzy clustering(FC).Firstly,based on the OTDR curve data collected in the field,VMD is used to extract the different modal components(IMF)of the original signal and calculate the fuzzy entropy(FE)values of different components to characterize the subtle differences between them.The fuzzy entropy of each curve is used as the feature vector,which in turn constructs the communication optical fibre feature vector matrix,and the fuzzy clustering algorithm is used to achieve fault diagnosis of faulty optical fibre.The VMD-FE combination can extract subtle differences in features,and the fuzzy clustering algorithm does not require sample training.The experimental results show that the model in this paper has high accuracy and is relevant to the maintenance of communication optical fibre when compared with existing feature extraction models and traditional machine learning models. | Xiangqun Li Jiawen Liang Jinyu Zhu Shengping Shi Fangyu Ding Jianpeng Sun Bo Liu | 2024 | Energy Engineering2024,121,1: | 0 |