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Investigation on the intrinsic wetting thresholds of liquids by measuring the interaction forces of self-assembled monolayers

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Nano Research 2022年第5期15卷 4344-4349页

作者： Yulong Li Shaofan He zhe Xu zhonglong Luo Hongyan Xiao Ye Tian Lei Jiang Key Laboratory of Bio-inspired Materials and Interfacial Science Technical Institute of Physics and ChemistryChinese Academy of SciencesBeijing 100190China School of Future Technology University of Chinese Academy of SciencesBeijing 100049China School of Chemistry and Environment Beihang UniversityBeijing 100191China School of Mechanical Engineering Anhui University of TechnologyMa’anshan 243032China Ji Hua Laboratory Foshan 528000China

90°is the limitation oflyophilicity and lyophobicity for ideal surface for centuries,but it has been proved to be contradictory on some *** symmetrical surfaces with different surface tensions can attract or repel each other in ***,at the molecular level,the Iyophilicity or lyophobicity is the results of interactions between the liquids and ***,using atomic force microscope(AFM)to measure interaction forces between symmetrical self-assembled monolayers(SAMs)in different liquids,we found that the SAMs repel each other when the surfaces are hydrophilic whereas attract when hydrophobic in *** contact angle corresponding to the transition of attraction to repulsion is approximate to 65°,defined as the intrinsic wetting threshold(IWT)of *** ethylene glycol(Eg),dimethyl sulfoxide(DMSO),N,N-dimethyl formamide(DMF),the IWTs could be determined by changes of adhesion forces between *** research redefined the IWTs for liquids,which is the essential guide to both basic theory and applications of wettability.

关键词： wettability intrinsic wetting threshold force curve adhesion force hydrogen bond

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岩石圈磁场数据网格化方法研究

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地震地磁观测与研究 2021年第3期42卷 137-143页

作者：张忠龙倪喆赵育飞黔西南民族职业技术学院中国贵州562400 云南省地震局中国昆明650224

选取最小曲率、克里格、改进Shepard、反距离加权和径向基函数等5种网格化数学模型,对小江断裂地磁总强度加密区岩石圈磁场数据进行数据网格化,采用均方根预测误差和插值数据残差均方根等评价指标对网格化结果进行评价,结果表明,克里格... 详细信息

选取最小曲率、克里格、改进Shepard、反距离加权和径向基函数等5种网格化数学模型,对小江断裂地磁总强度加密区岩石圈磁场数据进行数据网格化,采用均方根预测误差和插值数据残差均方根等评价指标对网格化结果进行评价,结果表明,克里格插值与反距离加权插值法的精度最高。进一步比较克里格插值与反距离加权插值法的网格化图形质量,结果显示克里格插值网格化过程中兼顾了数据的平滑性和各实测点与待估点之间的空间位置关系,避免了系统误差,得出克里格插值更适用于岩石圈磁场数据网格化的结论。

关键词：岩石圈磁场网格化克里格插值反距离加权插值精度

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Establishment and application of an accurate identification method for fragrant soybeans

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Journal of Integrative Agriculture 2021年第5期20卷 1193-1203页

作者： ZHANg Yong-fang ZHANg Chun-yan ZHANg Bo YIN Man HONg Hui-long YU Li-li gAO Hua-wei gU Yong-zhe LIU Zhang-xiong LI Fu-heng QIU Li-juan College of Life Sciences Northeast Agricultural UniversityHarbin 150030P.R.China College of Life Sciences Shanxi Datong UniversityDatong 037009P.R.China National Key Facility for Crop gene Resources and genetic Improvement(NFCRI)/Key Laboratory of germplamsm Utilization Ministry of Agriculture and Rural Affairs/Institute of Crop SciencesChinese Academy of Agricultural SciencesBeijing 100081P.R.China School of Plant and Environmental Sciences Virginia Polytechnic Institute and State UniversityBlacksburgVA 24060USA

In order to screen the aroma characteristics of soybean,a new method was established which can quickly quantify the content of 2-acetyl-1pyrroline(2-AP),an important compound related to soybean aroma,using gas chromatography-mass spectrometry(gC-MS).Based on peak profile,total peak area and retention time as test indexes,an accurate identification method for fragrant soybeans was *** optimum parameters of the protocol consisted of column temperature70℃,sample injector temperature 180℃,optimum extraction alcohol content 1 m L,Na Cl content 0.1 g,ultrasonication time10 min,and extraction time 1 h,which were established by using the orthogonal test of single factors and three factors with four levels(L_9(3)^4).2-AP content of leaves had significant correlations with seeds,which were easier to *** protocol was simple and easy to carry out,consumed only small amounts of reagents,and provided accurate and reliable results with good reproducibility.A total of 101 soybean genotypes from different geographical sources were analyzed using this *** results showed that the average content of 2-AP was 0.29 mg L^(–1),ranging from 0.094 to 1.816 mg L^(–1),and the genetic diversity index was *** all genotypes-tested,they were classified into three grades,including seven elite genotypes identified as"grade one fragrant soybeans",which were zhonglong 608,Heinong 88,Ha13-2958,Hongmiandou,Heinong 82,Huangmaodou,and Jiyu *** results provide both an identification technique and several elite aroma genotypes for gene discovery and good quality breeding in soybean.

关键词： soybean 2-acetyl-1pyrroline gC-MS quantification method germplasm

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