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纳米尺度下水液滴撞击固体表面润湿性行为的分子动力学模拟

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原子与分子物理学报 2025年第2期42卷 91-97页

作者：王美婷祁影霞陶杰陈曦杨宇水张蕾刘妮杨果成上海理工大学能源与动力工程学院上海200093 上海海立集团股份有限公司上海201206

本文采用分子动力学方法研究纳米尺度下水液滴碰撞铜壁面的润湿过程,水滴温度和固液作用强度对润湿性行为的影响以及直径为4.67 nm球形液滴在273 K-353 K温区、固液作用强度在1-3范围内,水滴的润湿行为和平衡接触角与温度、固液作用强... 详细信息

本文采用分子动力学方法研究纳米尺度下水液滴碰撞铜壁面的润湿过程,水滴温度和固液作用强度对润湿性行为的影响以及直径为4.67 nm球形液滴在273 K-353 K温区、固液作用强度在1-3范围内,水滴的润湿行为和平衡接触角与温度、固液作用强度之间的变化关系.研究结果显示:液滴在不同润湿性壁面上会产生明显不同的润湿演化特性.模拟结果表明对于亲水材料,由于壁面附近水分子所受的势能束缚随温度升高而增强,平衡接触角则相应减小;对于疏水材料,由于随温度的升高分子之间增加的势能大于固液之间增加的势能而表现出平衡接触角随着温度升高而增大的趋势.因此,针对其材料亲水性能,可以通过改变温度影响其润湿行为,从而提高传热、传质和自清洁性能.

关键词：润湿性接触角分子动力学模拟纳米液滴

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Preparation of SO_4^(2-)/TiO_2-La_2O_3 solid superacid and its catalytic activities in acetalation and ketalation

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Journal of Zhejiang University-Science B(Biomedicine & Biotechnology) 2006年第7期7卷 553-558页

作者： yang shui-jin BAI Ai-min SUN Ju-tang Department of Chemistry and Environmental Engineering Hubei Normal University Huangshi 435002 China College of Chemistry and Molecular Sciences Wuhan University Wuhan 430072 China

SO4^2- / TiO2-La2O3, a novel solid superacid, was prepared and its catalytic activities at different synthetic conditions are discussed with esterification of n-butanoic acid and n-butyl alcohol as probing reaction. The optimum conditions have also been found, mole ratio of n（La^3＋）：n（Ti^4＋） is 1：34, the soaked consistency of H2SO4 is 0.8 tool/L, the soaked time of HESO4 is 24 h, the calcining temperature is 480 ℃, the calcining time is 3 h. Then it was applied in the catalytic synthesis often important ketals and acetals as catalyst and revealed high catalytic activity. Under these conditions on which the molar ratio of aldehyde/ketone to glycol is l： 1.5, the mass ratio of the catalyst used in the reactants is 0.5%, and the reaction time is 1.0 h, the yields of ketals and acetals can reach 41.4%-95.8%.

关键词： SO4^2-/ TiO2-La2O3 Rare earth Solid superacid Catalysis

Overexpression of the OsPDCD5 Gene Induces Programmed Cell Death in Rice

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Journal of Integrative Plant Biology 2005年第9期47卷 1115-1122页

作者： Kotb ATRIA Ke-Gui LI Chun WEI Guang-Ming HE Wei SU Jin-shui yang Institute of Genetics School of Life Sciences Fudan University Shanghai 200433 China

The primary aim of the present study was to investigate the overexpression of the rice （Oryza sativa L.） programmed cell death 5 （OsPDCD5） gene in rice plant. Constitutive expression of OsPDCD5 from the cauliflower mosaic virus （CaMV） 35S promoter induced programmed cell death （PCD） in transgenic rice. Programmed cell death was accompanied by typical features, including inhibition of developmental growth, a reduction of fresh weight, degradation of total protein content, and fragmentation of genomic DNA. These results suggest that OsPDCD5 plays an essential role in the regulation of PCD in rice plants.

关键词： gene transformation Oryza sativa rice programmed cell death 5 (OsPDCD5) gene programmed cell death.

Preliminary limits on deviation from the inverse-square law of gravity in the solar system:a power-law parameterization

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Research in Astronomy and Astrophysics 2014年第8期14卷 1019-1028页

作者： Meng-Yao Liu Ze-Hao Zhong Yi-Chen Han Xiao-Yu Wang Zong-shui yang Yi Xie School of Astronomy and Space Science Nanjing University Key Laboratory of Modern Astronomy and Astrophysics Nanjing UniversityMinistry of Education

New physics beyond the standard model of particles might cause a deviation from the inverse-square law of gravity. In some theories, it is parameterized by a power-law correction to the Newtonian gravitational force, which might originate from the simultaneous exchange of particles or modified and extended theories of gravity. Using the supplementary advances of the perihelia provided by INPOP 10a （IMCCE, France） and EPM2011 （IAA RAS, Russia） ephemerides, we obtain preliminary limits on this correction. In our estimation, we take the Lense-Thirring effect due to the Sun＇s angular momentum into account. The parameters of the power-law correction and the uncertainty of the Sun＇s quadrupole moment are simultaneously estimated with the method of minimizing X2. From INPOP10a, we find N - 0.605 for the exponent of the power-law correction. However, from EPM2011, we find that, although it yields N = 3.001, the estimated uncertainty in the Sun＇s quadrupole moment is much larger than the value given by current observations. This might be caused by the intrinsic nonlinearity in the power-law correction, which makes the estimation very sensitive to the supplementary advances of the perihelia.

关键词： gravitation- ephemerides- celestial mechanics

A Study of Heteropoly Complexes of Rare Earths as Catalyst Promoter in the Synthesis of Ethyl Acetate

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Chinese Chemical Letters 2004年第9期15卷 1095-1097页

作者： shui yang HE Ke PENG Di ZHANG Wang Ting WU Gang Lin XUE Qi Zhen SHI DepartmentofChemistry NorthwestUniversityandShaanxiKeyLaboratoryofPhysico-inorganicChemistryXi＇an710069

The capability of the synthesized heteropoly complexes of rare earths {K10 [(O39W11Si) Ln(Gly)3Ln(SiW11O39)]?H2O (Ln=La, Pr, Nd, Sm, Eu, Gd, Tb, Dy)} as the catalyst promoter in the synthesis of the ethyl acetate was studied. The results showed that the quantity of H2SO4 used for synthesizing the ethyl acetate can be reduced by 75% and the yield reached 98% at the optional condition.

关键词： Heteropoly complexes of rare earths catalyst promoter ethyl acetate.

Molecular Structure and Properties of a Novel Acylhydrazone(C_(14)H_(14)O_6N_4)·HCON(CH_3)_2·2H_2O

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Chemical Research in Chinese Universities 2012年第3期28卷 524-528页

作者： CHEN Feng-ying WU Wang-ting LI Heng-xin HE shui-yang WEN Zhen-yi LI Jia-xing Shaanxi Key Laboratory of Physico-lnorganic Chemistry College of Chemistry&Materials ScienceNorthwest UniversityXi'an 710069P.R.China Department of Chemistry&Chemical Engineering Shangluo UniversityShangluo 726000P.R.China Capital Museum Beijing 100045P.R.China

[N-（Propionic acid）] terephthalal acyl dihydrazone（H4L） was synthesized and characterized by element analysis, IR, 1H NMR and MS. The theoretical studies on H4L were carried out at HF/6-31＋G（d） and B3LYP/ 6-3 I＋G（oD levels. The main decomposition stage of it was studied with IR track. The kinetic parameters[the apparent activation energy（Ea） and pre-exponential constant（A） of the first and second stages of decomposition reaction] were obtained by Kissinger and Ozawa＇s methods. Furthermore, the antimicrobial activity of HaL against wheat rust was investigated by spore sprout method.

关键词： Crystal structure Quantum chemistry Antimicrobial activity

Soil Biological Changes for a Natural Forest and Two Plantations in Subtropical China

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Pedosphere 2004年第3期14卷 297-304页

作者： CHENGuang-shui yangYu-Sheng XIEJin-Sheng LILing GAORen CollegeofGeographyScience FujianNormalUniversityFuzhou350007（China） CollegeofForestry FujianAgricultureandForestryUniversityNanpin9353001（China）

Conversion of natural forests into pure plantation forests is a common management practice in subtropical *** evaluate the effects of forest conversion on soil fertility, microbe numbers and enzyme activities in topsoils (0-10 cm)were quantified in two 33-year-old monoculture plantations of Castanopsis kawakamii Hayata (CK) and Cunninghamia lanceolata Lamb. (Chinese fir) (CF), and compared to a neighboring relict natural C. kawakamii forest (NF), in Sanming,Fujian. Five soil samples were collected once each in January, April, July, September and November in 2000 in each forest for laboratory analysis. Over the sampling year, there were significant differences for bacteria, fungi and actinomycetes between forests and between seasons (P ＜ 0.05). The largest bacteria and fungi populations were in NF, while CF contained the greatest number of actinomycetes. There were also significant differences (P ＜ 0.05) with microbial respiration for forests and seasons. Additionally, compared with NF, urease and acid phosphatase were significantly lower (P ＜ 0.05)in CK and CF. Also, the correlations of soil hydrolysable N and available P to soil microbial and enzymatic activities were highly significant (P ＜ 0.01). Thus, to alter the traditional Chinese fir monoculture so as to mimic the natural forest conditions, managing mixed stands of Chinese fir and broadleaf trees or conducting crop rotation of conifers and broadleaf trees as well as minimizing forest disturbances like clear-cutting, slash burning and soil preparing, could be utilized.

关键词： chinese fir monoculture plantation natural forest soil enzymes soilmicrobes

OsFK1 encodes C-14 sterol reductase,which is involved in sterol biosynthesis and affects premature aging of leaves in rice

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The Crop Journal 2024年第4期12卷 1010-1021页

作者： Ping Li Xia Zhang Wuzhong Yin yang shui Jie Zhang Nana Xu Dasong Bai Qingxiong Huang Yuanyuan Li Pan Qi Xing Li Qianlong Li Shihong yang Guotao yang Hong Chen Peng Qin Yungao Hu Youlin Peng Rice Research Institute School of Life Science and EngineeringSouthwest University of Science and TechnologyMianyang 621010SichuanChina Hainan Yazhou Bay Seed Laboratory Sanya 572025HainanChina Rice Research Institute State Key Laboratory of Crop Gene Exploration and Utilization in Southwest ChinaSichuan Agricultural UniversityChengdu 610061SichuanChina Yazhouwan National Laboratory Sanya 572704HainanChina

The enzyme C-14 sterol reductase is involved in biosynthesis of brassinosteroids(BR)and sterols,as well as plant ***1,a member of the sterol biosynthesis pathway located in the endoplasmic reticulum(ER),encodes C-14 sterol ***,there is little research on the function of C-14 sterol reductase in *** with the wild type,an osfk1 mutant showed dwarf phenotype and premature aging in the second leaf during the trefoil stage,and abnormal development of leaf veins during the tillering *** osfk1 mutant showed signs of aberrant PCD,as evidenced by TUNEL *** suggested that high ROS buildup caused DNA damage and ROS-mediated cell death in the *** osfk1 mutant also showed decreased chlorophyll content and aberrant chloroplast *** of the osfk1 mutant allele revealed a non-synonymous G to A mutation in the final intron,leading to early ***,we identified the OsFK1 allele,cloned it by Mutmap sequencing,and verified it by ***-MS/MS assays demonstrated that the osfk1 mutation caused lower phytosterol *** findings showed that the OsFK1 allele encoding C-14 sterol reductase is involved in phytosterol biosynthesis and mediates normal development of rice plants.

关键词： Leaf development ROS Phytosterol biosynthesis Rice

Relativistic transformations between global and local velocities of an orbiter under IAU Resolutions

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Research in Astronomy and Astrophysics 2014年第10期14卷 1343-1350页

作者： Zong-shui yang Yi-Chen Han Jing-Hao Liu Song-He Qin Zhen Wan Xiao-Yu Wang Ze-Hao Zhong Kai Zhu Yi Xie School of Astronomy and Space Science Nanjing University Key Laboratory of Modern Astronomy and Astrophysics Nanjing UniversityMinistry of Education

Einstein＇s general relativity （GR） has become an inevitable part of deep space missions. According to the International Astronomical Union （IAU） Resolutions which are built in the framework of GR, several time scales and reference systems are recommended to be used in the solar system for control, navigation and scientific op- eration of a spacecraft. Under the IAU Resolutions, we derive the transformations be- tween global and local velocities of an arbitrary orbiter. These transformations might be used in orbit determination with Doppler tracking and prediction of Doppler ob- servables for the spacecraft. Taking the YingHuo-1 Mission as a technical example of future Chinese Mars explorations, we evaluate the significance and contributions of various components in the transformations. The largest contribution of the relativistic parts in the transformations can reach the level of ～ 5 × 10-5 m s^-1. This suggests that, for such a spacecraft like we have assumed, if the accuracy of Doppler tracking is better than ～ 5 × 10-5 m s^-1 then the relativistic parts of the transformations of velocities will be required.

关键词： reference systems -- method numerical-- space vehicles -- techniques radial velocities