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| 1 | Study on the Soy Protein-Based Adhesive Cross-Linked by Glyoxal显示文摘Based on the ESI-MS and ^(13)C-NMR analysis of the forms of glyoxal in acidic and alkaline solutions,the soy-based adhesive cross-linked by glyoxal was prepared in this work.The results showed that glyoxal existed in water in different forms at different pH levels.Under alkaline conditions,glyoxal transformed to glycolate through the intramolecular disproportionation reaction.Under acidic conditions,although some of glyoxal transformed to glycolate as what happened under alkaline conditions,most of glyoxal molecules existed in the form of fiveor six-membered cyclic ether structure.No ethylene tetraol or free aldehyde group was actually detected under these conditions.Although glyoxal reacted with soy protein under both acidic and alkaline conditions,alkaline conditions were more favorable for the improvement of mechanical performance and water resistance of soybased adhesives than acid conditions. | Zhigang Wu Jiankun Liang Hong Lei Bengang Zhang Xuedong Xi Lifen Li | 2021 | Journal of Renewable Materials2021，9，2： | 5 |
| 2 | Discovery of a high-altitude ecotype and ancient lineage of Arabidopsis thaliana from Tibet显示文摘Arabidopsis thaliana(A.thaliana)has long been a model species for dicotyledon study,and was the first flowering plant to get its genome completed sequenced[1].Although most wild A.thaliana are collected in Europe,several studies have found a rapid A.thaliana west-east expansion from Central Asia[2].The Qinghai-Tibet Plateau(QTP)is close to Central Asia and known for its high alti- | Liyan Zeng Zhuoya Gu Min Xu Ning Zhao Weidong Zhu Takahiro Yonezawa Tianmeng Liu Lha Qiong Tashi Tersing Lingli Xu Yang Zhang Rongyan Xu Ningyu Sun Yanyan Huang Jiankun Lei Liang Zhang Feng Xie Fang Zhang Hongya Gu Yupeng Geng Masami Hasegawa Ziheng Yang M. James C. Crabbe Fan Chen Yang Zhong | 2017 | Science Bulletin2017，62，24： | 3 |
| 3 | Temperature monitoring of the XPS board insulated subgrade along the newly constructed Gonghe-Yushu Highway in permafrost regions显示文摘On the basis of on-site measured data of the newly constructed Gonghe-Yushu Highway in a permafrost region, this paper analyzed thermal conditions of the subgrade with XPS insulated board according to different selected monitoring sections in various locations. We also summarized the geothermal distribution and change rules of subgrade with XPS insulation board under the asphalt pavement in summarized a high temperature frozen soil region. It is suggested that the shoulder of subgrade with XPS insulation board be widen to a reasonable width so as to keep the subgrade stable. | BoWen Tai JianHong Fang Lei Liu AnHua Xu JianKun Liu Ya Hu Tian | 2015 | Research in Cold and Arid Regions2015，7，5： | 2 |
| 4 | Competitive polycondensation of model compound melamine-urea-formaldehyed(MUF)resin system by^(13)C NMR显示文摘Melamine-urea-formaldehyde(MUF)resin is an excellent adhesive in the field of wood adhe-sives,however the competition mechanism is questionable which affects the structure control and performance optimization of the resin.In this study,the competitive resin synthesis poly-condensation reaction of MUF system under alkaline condition was studied based on the model compound 1,3-dihydroxymethyl urea(UF_(2))and melamine(M)system,and the competitive reac-tion mechanism in the system was deduced by^(13)C NMR quantitative analysis.The results show that the energy barrier of hydroxymethylation of melamine is lower than that of urea,and the priority of hydroxymethylation is lower;the addition of melamine results in a large amount of hy-drolysis of UF_(2),and the formed free formaldehyde,resulting in hydroxymethylation of melamine;there is obvious polycondensation reaction in UF_(2)+M system,mainly from the relationship be-tween hydroxymethylurea and melamine or hydroxymethylmelamine.The type I bridge bond structure of polycondensation mainly comes from the reaction of UF_(2) and M,which is difficult to form the type II bridge bond.At low molar ratio,the formation of bridge bond is superior to that of ether bond.With the increase of molar ratio,the formation of ether bond shows advantages,but there is obvious competition between them.There may be competitive presence of the UF self-condensation products,melamine-formaldehyde(MF)self-condensation products and MUF co-condensed products after the polycondensation reaction. | Jiankun Liang Quan Li Zhigang Wu Guanben Du Taohong Li Hong Lei Lifen Li | 2020 | Journal of Bioresources and Bioproducts2020，5，1： | 2 |
| 5 | Multiple origins of Tibetan Y chromosomes显示文摘 | Yaping Qian Binzhi Qian Bing Su Jiankun Yu Yuehai Ke Zhengtao Chu Lei Shi Daru Lu Jiayou Chu Li Jin | 2000 | Human Genetics2000，，4： | 1 |
| 6 | Multiple origins of Tibetan Y chromosomes显示文摘 | Yaping Qian Binzhi Qian Bing Su Jiankun Yu Yuehai Ke Zhengtao Chu Lei Shi Daru Lu Jiayou Chu Li Jin | 2000 | Human Genetics2000，，4： | 1 |
| 7 | incentive Mechanism Designing of Access Management Policy in Affordable Housing and the Example Analysis显示文摘 | Zhang Jiankun Zhou Lei | 2011 | Cities2011，，2： | 1 |
| 8 | Plasma Treatment Induced Chemical Changes of Alkali Lignin to Enhance the Performances of Lignin-Phenol-Formaldehyde Resin Adhesive显示文摘Alkali lignin was processed by plasma and then used in modification of phenol formaldehyde resin in this study.Chemical structural changes of lignin which was processed by plasma as well as bonding strength,tensile property,curing performance and thermal property of the prepared phenol formaldehyde resin which was modified by the plasma processed lignin were analyzed.Results demonstrated that:(1)Alkali lignin was degraded after the plasma processing.The original groups were destroyed,and the aromatic rings collected abundant free radicals and oxygen-containing functional groups like hydroxyls,carbonyls,carboxyls and acyls were introduced into increase the reaction activity of lignin significantly.(2)The introduction of alkali lignin decreased the free formaldehyde content and increased bonding strength and toughness of the prepared phenol formaldehyde resin,especially after the introduction of lignin treated with plasma.(3)The introduction of alkali lignin led to high curing temperature for the prepared phenol formaldehyde resin,but that was reduced by the plasma processed alkali lignin.(4)The introduction of alkali lignin could also increase thermal stability of phenol formaldehyde resin,but that was modified by plasma processed alkali lignin was better than the unprocessed lignin.Based on the results,the plasma processed lignin was used to modify phenol formaldehyde resin,which could increase the strength and toughness of phenol formaldehyde resin significantly. | Zhigang Wu Sicheng Chen Jiankun Liang Lifen Li Xuedong Xi Xue Deng Bengang Zhang Hong Lei | 2021 | Journal of Renewable Materials2021，9，11： | 1 |
| 9 | The Crosslinking Mechanism of Camellia Oleifera Protein Adhesive with Amine Resins by ^(13)C-NMR and ESI-MS显示文摘A new protein wood adhesive was studied with Camellia oleifera protein.Formaldehyde and N-(2)-L-Ala-L-Gln(LAG)were used as the model compounds of amino resins and Camellia oleifera protein,aiming to provide scientific foundations for the improvement and applications of Camellia oleifera protein adhesive by the reaction of model compounds.The experimental results demonstrate that,under alkaline conditions,formaldehyde is easier to react with Camellia oleifera protein by quicker reaction and lower curing temperature.Under acid conditions,amino hydroxymethylated structure of aliphatic series from LAG is difficult to form stable reactive intermediates and further polycondensation.Hydroxymethylation of end acylamino and peptide bond amino from LAG is relatively weak.Under alkaline conditions,the free aliphatic amino and acylamino of LAG both can make hydroxymethylation reaction with formaldehyde.In the polycondensation,hydroxymethyl amide is the initial structure and the reactive intermediate is produced by E1cb reaction of hydroxymethyl amide.Methylene bridge bonds and methylene ether bonds are structures of the polycondensation products,which are competing reactions.The former is mainly formed by the reaction between alkaline reactive intermediate and amino of aliphatic series,and the latter is produced by the reaction of reactive intermediate and amino of hydroxymethyl aliphatic series with hydroxymethyl amide. | DENG Xue ZHANG Bengang LIANG Jiankun LI Lifen WU Zhigang LEI Hong | 2023 | Journal of Wuhan University of Technology(Materials Science)2023，38，2： | 0 |
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