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| 1 | Leaching and Redistribution of Nutrients in Surface Layer of Red Soils in Southeast China显示文摘The leaching and redistribution of nutrients in the surface layer of 4 types of red soils in Southeast China were studied with a lysimeter experiment under filed conditions.Results showed that the leaching concentrated in the rainy season(from April to June).Generally,the leaching of soil nutrients from the surface layer of red soils was in the order of Ca>Mg>K>NO3-N,In fertilization treatment,the total amount of soil nutrients leached out of the surface layer in a red soil derived from granite was the highest in all soils.The uptake by grass decreased the leaching of fertilizer ions in surface layer,particularly for No3-N,Soil total N and exchangeable K,Ca and Mg in the surface layer decreased with leaching and grass uptake during the 2 years without new fertilization of urea,Ca(H2PO4)2,KCl,CaCO3 and MgCO3,Ca moved from the application layer(0-5cm) of fertilizer and accumulated in the 10-30cm depth in the soils studied except that derved from quaternary red clay.The deficiency of soil exchangeable K will become a serious degradation process facing the Southeast China. | SUN BO ZHANG TAOLIN and ZHAO QIGUO(Institute of Soil Science, the Chinese Academy of Sciences, P.O. Box 821, Naniing 210008 China) | 2000 | Pedosphere2000，10，2： | 14 |
| 2 | Self-assembled structures of a semi-rigid polyanion in aqueous solutions and hydrogels显示文摘Poly(2,2'-disulfonyl-4,4'-benzidine terephthalamide) (PBDT), a kind of liquid-crystalline (LC) molecule, has high molecular weight, negative charge and a semi-rigid structure. The aqueous solution of PBDT shows nematic liquid crystalline state above a critical PBDT concentration, CLC*, of 2 wt%-3wt%. Different from the flexible polyelectrolyte, PBDT shows a variety of self-assembling structures in aqueous solution with and without salt due to the semi-rigid nature and highly charged property. In addition, the hydrogels with ordered structure are developed by polymerizing a cationic monomer N-[3-(N,N-dimethylamino) propyl] acrylamide methyl chloride quarternary (DMAPAA-Q) in the presence of a small amount of PBDT below the CLC*. During the polymerization of cationic monomer, the polycations form a complex with semi-rigid PBDT through electrostatic interaction; these complexes self-assemble into ordered structures that are frozen in the hydrogel. Several different structures, including the anisotropic, dual network-like structure, and cylindrically symmetric structure, with various length scales from micrometer to millimeter, are observed. The hydrogels with ordered liquid crystalline assemblies and particular optical properties should promise applications in many fields, such as in bionics, tissue engineering, and mechano-optical sensors. | SUN TaoLin WU ZiLiang GONG JianPing | 2012 | Science China Chemistry2012，55，5： | 2 |
| 3 | Study on the damping properties of magnetorheological elastomers based on cis-polybutadiene rubber显示文摘 | Sun Taolin Gong Xinglong Jiang Wanquan | 2008 | Polymer Testing2008，27，4： | 1 |
| 4 | Distinctive electrochemical performance of novel Fe-based Li-rich cathode material prepared by molten salt method for lithium-ion batteries显示文摘For constructing next-generation lithium-ion batteries with advanced performances,pursuit of highcapacity Li-rich cathodes has caused considerable attention.So far,the low discharge specific capacity and serious capacity fading are strangling the development of Fe-based Li-rich materials.To activate the extra-capacity of Fe-based Li-rich cathode materials,a facile molten salt method is exploited using an alkaline mixture of LiOH–LiNO3–Li2O2 in this work.The prepared Li1.09(Fe0.2Ni0.3Mn0.5)0.91O2 material yields high discharge specific capacity and good cycling stability.The discharge specific capacity shows an upward tendency at 0.1 C.After 60 cycles,a high reversible specific capacity of ~250 m Ah g-1is delivered.The redox of Fe3+/Fe4+and Mn3+/Mn4+are gradually activated during cycling.Notably,the redox reaction of Fe2+/Fe3+can be observed reversibly below 2 V,which is quite different from the material prepared by a traditional co-precipitation method.The stable morphology of fine nanoparticles(100–300 nm)is considered benefiting for the distinctive electrochemical performances of Li1.09(Fe0.2Ni0.3Mn0.5)0.91O2.This study demonstrates that molten salt method is an inexpensive and effective approach to activate the extra capacity of Fe-based Li-rich cathode material for high-performance lithium-ion batteries. | Taolin Zhao Rixin Ji Hedi Yang Yuxia Zhang Xiuguo Sun Yanting Li Li Li Renjie Chen | 2019 | Journal of Energy Chemistry2019，28，6： | 1 |
| 5 | Time-dependent mechanical behavior of tough hydrogels under multiaxial stretching显示文摘Understanding the time-dependent mechanical behavior of tough and viscoelastic hydrogels under complex external loading is crucial.In this study,we utilized tough and viscoelastic hydrogels synthesized through the copolymerization of methacrylic acid and methacrylamide as a model system to investigate their mechanical behavior under multiaxial stretching across a wide range of strain rates.Three stretching modes examined were uniaxial,pure shear,and equal biaxial stretching.Our findings show that under equal biaxial stretching,the hydrogels exhibit higher mechanical properties and energy dissipation compared to uniaxial and pure shear stretching,owing to the greater contribution of hydrogen bonds to energy dissipation in the former stretching mode.Additionally,employing the time-elongation separability method during the stretching process,we observed that the relaxation of dynamic hydrogen bonds in the hydrogels only depends on stretching time,independent of the elongation ratio and stretching modes.We anticipate that this study will yield valuable contributions to the design of durable load-bearing soft materials,particularly in dealing with complex deformation and strain rate responses. | Yong Liu Yang Chen Jie Zhu Mengze Lu Chuanxia Jiang Zhiwei Fan Taolin Sun | 2023 | International Journal of Smart and Nano Materials2023，14，4： | 0 |
| 6 | In Memoriam: ZHAO Qiguo (1930–2023)显示文摘ZHAO Qiguo,93,academician of Chinese Academy of Sciences,passed away in Nanjing on January 3,2023.Qiguo was a leading soil scientist in China and had long been devoted to the investigation of soil resources and ecological environment.He made outstanding contributions in promoting the development of soil science in China,ensuring national food security,and strengthening the construction of ecological civilization.Qiguo was born on February 25,1930 in Wuhan,China.He earned a B.S.from the Department of Agronomy of Huazhong Agricultural College in 1953.After that,Qiguo moved to a research position at the Institute of Soil Science,Chinese Academy of Sciences,where he worked for his entire academic career. | Ren Fang SHEN Bo SUN Jia Bao ZHANG Taolin ZHANG | 2023 | Pedosphere2023，33，1： | 0 |
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