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Synthesis and Herbicidal Activity of Novel 5-Substituted Benzenesulfonylureas

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Chemical Research in Chinese Universities 2007年第6期23卷 674-678页

作者： WANG Mei-yi MU xiao-li GUO Wan-cheng li Yong-hong li Zheng-ming State Key Laboratory of Elemento-Organic Chemistry Research Institute of Elemento-Organic Chemistry Nankai University Tianfin 300071 P. R. China

Sulfonylurea herbicides have been widely used because of their low application rates, good crop sdeetivities and low mammalian toxicities. However, some sulfonylureas might persist unfavourably in the environment with residual problems. In order to look for ecologically safer and environmentally benign sulfonylureas, and on keeping the pyrimidine ring being monosubstitated, 15 novd C5-monosubstituted benzenesulfonylurea compounds were synthesized. The structures of all the compounds synthesized were confirmed by demental analysis and ^1H NMR. Preliminary herbicidal activities of these new sulfonylurea compounds were determined by ALS screening （ in vitro） and pot bioassay experiments（ in vivo）. The herbicidal results show that some novel sulfonylureas are comparable to commercial Foramsulfuron and Monosulfuron.

关键词： Sulfonylurea 5-Substituted phenyl ring Herbicidal activity

THE STRUCTURE AND PROPERTIES OF li_2O-Al_2O_3-SiO_2LOW EXPANSION GLASS CERAMICS CONTAINING B_2O_3

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Journal of Wuhan University of Technology(Materials Science) 1999年第1期14卷 41-45页

作者： xiao Jing li Hong cheng Jinshu Wuhan University of Technology Wuhan University of Metallurgy Wuhan University of Technology China Wuhan University of Metallurgy China MS Glass Sci. and Technol. Res. Inst. Wuhan University of Technology Wuhan 430070 China

Through measuring the coefficient of linear expansion, the structure and properties of the li2O-Al2O3-SiO2 low expansion glass ceramics containing B2O3 are studied by JR and XRD. It is shoutn that the IR method is efficient in the study of the glass-ceramics structure. There is a " Boron abnormality" in the system which has an important influence on the properties of the glass-ceramics.

关键词： boron abnormality li2O-Al2O3-SiO2 system glass ceramics

Obtained transgenic wheat expressing pac1 mediated by Agrobacterium is resistant against Barley yellow dwarf virus-GPV

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Chinese Science Bulletin 2006年第19期51卷 2362-2368页

作者： YAN Fei ZHENG Yinying ZHANG Wenwei xiao Hong li Shifang cheng Zhuomin State Key Laboratory for Biology of Plant Diseases and Insect Pests Chinese Academy of Agricultural Sciences Beijing 100094 China

In fission yeast (Schizosaccharomyces pombe), pac1 gene was cloned with 99.3% nucleo- tide sequence similarity with published pac1 in GenBank. In pET-5α expression system, the expres- sion product of cloned pac1 in E. coli showed activity to degrade the double-strand RNA. Harboring the binary vector pBI121, which contains pac1 gene, Agrobacterium tumefaciens strain LBA4404 was used to transform the wheat immature embryos pre- cultured 7―10 d. After preregeneration, regeneration and selection culture stage, totally 41 G418 resistant plants were obtained, in which 25 lines were proved to integrate with transgene and express transgene normally by PCR, Dot blot, RT-PCR and EliSA de- tection. Antivirus test carried out on 25 positive lines with high dose of Barley yellow dwarf virus-GPV re- vealed that 12 lines had resistance to BVDV-GPV in low level, another 12 lines had resistance to BVDV- GPV in middle level, and 1 line showed resistance to BVDV-GPV in high level. However, both low and middle level of resistance plants showed no symp- toms when infected by viruses at low dose, which suggested the dose-dependent effect of the resis- tance mediated by pac1 to BYDV-GPV.

关键词：转基因小麦 pac1 土壤杆菌抗病毒素大麦黄矮病

Fusion Algorithm for Remote Sensing Images Based on Nonsubsampled Contourlet Transform

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自动化学报 2008年第3期34卷 274-281页

作者： YANG xiao-Hui JIAO li-cheng Key Laboratory of Intelligent Perception and Image Understanding of Ministry of Education of China Institute of Intelligent Information ProcessingXidian UniversityXi＇an 710071P.R.China

就图象的人的视觉系统和特征而言，新奇图象熔化策略为在 nonsubsampled contourlet 的高分辨率图象和 multispectral 图象转变的 panchro matic (NSCT ) 被介绍域。NSCT 能由它好 multiresolution，移动不变性，和高 directionality ... 详细信息

就图象的人的视觉系统和特征而言，新奇图象熔化策略为在 nonsubsampled contourlet 的高分辨率图象和 multispectral 图象转变的 panchro matic (NSCT ) 被介绍域。NSCT 能由它好 multiresolution，移动不变性，和高 directionality 的特征的优点在图象给 asymptotic 边和轮廓的最佳的表示。紧张部件增加策略基于 LHS 变换被介绍进 NSCT 领域保存空间分辨率和颜色内容。熔化方法建议了的实验表演能改进空间分辨率并且保留光谱信息同时，并且与传统的原则部件分析( PCA )相比在视觉效果和量的肛门 ysis 两个都有改进方法， intensity-hue-saturation (代表耶稣之符号)变换技术，小浪变换加权的熔化方法，相应小浪基于变换的熔化方法，和 contourlet 基于变换的熔化方法。

关键词：混合算法遥感图象强度组分添加非子采样Contourlet变换 LHS变换

ZnO/PANI nanoflake arrays sensor for ultra-low concentration and rapid detection of NO_(2)at room temperature

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Rare Metals 2023年第2期42卷 536-544页

作者： Qiu-Yue Zheng Meng Yang Xin Dong Xian-Fa Zhang xiao-li cheng li-Hua Huo Zoltán Major Ying-Ming Xu Key Laboratory of Functional Inorganic Material Chemistry Ministry of EducationSchool of Chemistry and Materials ScienceHeilongjiang UniversityHarbin150080China Key Laboratory for Polymeric Composite and Functional Materials of Ministry of Education School of Chemistryand State Key Laboratory of Optoelectronic Materials and TechnologiesSun Yat-Senen UniversityGuangzhou510275China Institute of Polymer Product Engineering Johannes Kepler University Linz124040LinzAustria

With the development of environmental monitoring,it is urgent to establish NO_(2)sensor with good sensing *** with the traditional NO_(2)sensors made of metal oxides,NO_(2)sensors made of n-p heterostructure nanocomposites have good sensing performance in detection limit and operating *** nanoflake arrays with polyaniline film grown on the surface were prepared on ceramic tubes by hydrothermal and vapor diffusion *** gas-phase diffusion method can control the heterostructure by adjusting the diffusion *** room temperature(25℃),the construction of rich n-p heterogeneous interface enables the sensor prepared by the nanocomposite to respond to NO_(2),showing the sensing performance with the response value of 28.00 to10.00×10^(-6)NO_(2);the detection limit improved to0.01×10^(-6)and the recovery time of 18 *** this work,the sensing mechanism of NO_(2)at heterogeneous interface is analyzed,which provides a promising material for the detection of low concentration NO_(2)at room temperature.

关键词： ZnO/polyaniline(PANI)nanoflake arrays n-p heterostructure Ultra-low concentration NO_(2)gas sensor Rapid detection

Sensing mechanism of Ag/α-MoO_(3) nanobelts for H_(2)S gas sensor

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Rare Metals 2021年第6期40卷 1545-1553页

作者： Shi-Kai Shen Xin-Lei Cui Chuan-Yu Guo Xin Dong Xian-Fa Zhang xiao-li cheng li-Hua Huo Ying-Ming Xu School of Electrical Engineering Suihua UniversitySuihua 152000China Key Laboratory of Functional Inorganic Material Chemistry Ministry of Education of the People’s Republic of ChinaHeilongjiang UniversityHarbin 150080China Key Laboratory for Polymeric Composite and Functional Materials of Ministry of Education Guangdong Engineering Technology Research Center for High-Performance Organic and Polymer Photoelectric Functional FilmsSchool of ChemistrySun Yat-Sen UniversityGuangzhou 510275China

Sensing mechanism is still a big problem in the field of gas ***-depth study of the sensing mechanism can provide better ideas for the design of sensing materials,and it is also more conducive to the improvement in gas-sensing *** this work,Ag/α-MoO_(3) material was obtained by loading Ag in α-MoO_(3) nanobelts prepared by hydrothermal *** material was characterized by field electron scanning electron microscopy(SEM),high-resolution transmission electron microscopy(HRTEM),X-ray diffraction(XRD) and X-ray photoelectron spectroscopy(XPS).Comparing the gas sensing properties of α-MoO_(3) and Ag/α-MoO_(3),it is found that Ag effectively improves the selectivity of the material to H_(2)S at 133℃.The response of the 5 wt% Ag/α-MoO_(3) sensor to 100 × 10-6 hydrogen sulfide(H_(2)S) is 225 and the detection limit is 100 ×10^(-9).The sensing mechanism was verified by gas chromatography and mass spectrometer(GC-MS),XPS and Fourier transform infrared spectroscopy(FTIR).

关键词： Ag/α-MoO_(3) Nanobelt Gas sensor Hydrogen sulfide Sensing mechanism

Er_(2)O_(3) nanospheres with fast response to humidity for non-contact sensing

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Rare Metals 2023年第1期42卷 56-63页

作者： Yi-Fan Jiang Chuan-Yu Guo Xian-Fa Zhang xiao-li cheng li-Hua Huo Ting-Ting Wang Ying-Ming Xu Key Laboratory of Functional Inorganic Material Chemistry Ministry of Education of the People’s Republic of ChinaHeilongjiang UniversityHarbin150080China

As a kind of lanthanide oxide functional material,Er_(2)O_(3) as aroused widespread scientific interest due to its exceptional properties;however,its humidity sensing performance remains to be ***,the rational designed Er_(2)O_(3) anospheres were prepared by one-step solvothermal and high-temperature calcined *** structure and morphology of the samples were analyzed by X-ray diffractometer(XRD),scanning electron microscope(SEM)and transmission electron microscope(TEM),and the effect of calcination temperatures on humidity sensing characteristics was also investigated.

关键词： method. spheres diffractometer

Recent advances of emerging tin disulfide for room temperature gas sensing

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Rare Metals 2023年第12期42卷 3897-3913页

作者： Ting-Ting Wang Bao-Shuai Xing Chuan-Yu Guo Juan-Yuan Hao You Wang li-Hua Huo xiao-li cheng Ying-Ming Xu Key Laboratory of Functional Inorganic Material Chemistry Ministry of EducationSchool of ChemistryChemical Engineering and MaterialsHeilongjiang UniversityHarbin 150080China School of Materials Science and Engineering Harbin Institute of TechnologyHarbin 150001China

Effectively monitoring of hazardous gases has become increasingly important for ecological environment and human *** an emerging component of two-dimensional materials,layered metal dichalcogenides are gaining significant attention due to their unique physical and chemical properties,thus catering well to the gas sensing ***,tin disulfide(SnS_(2))has been widely examined recently owing to its low-cost,earth-abundant,and environmental friendliness features,which meet the requirements of advanced sensing ***,the booming research advancements of SnS_(2)-based gas sensors have been ***,the basic attributes of SnS_(2) and its ability to detect various hazardous gases are ***,innovative approaches that have demonstrated the effectiveness of improving the room temperature sensing performance of SnS_(2) are ***,the major challenges and future opportunities of SnS_(2) are also *** is ultimately expected that this timely review could offer guidance for designing high-performance gas sensing materials and further push forward their potential applications.

关键词： Gas sensors Tin disulfide Advanced approaches Room temperature sensing

Bioactive Diarylheptanoids from Alpinia coriandriodora

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Natural Products and Bioprospecting 2021年第1期11卷 63-72页

作者： xiao-li cheng Han-Xiang li Juan Chen Ping Wu Jing-Hua Xue Zhong-Yu Zhou Nia-He Xia xiao-Yi Wei Key Laboratory of Plant Resources Conservation and Sustainable Utilization South China Botanical GardenChinese Academy of SciencesTianhe DistrictXingke Road 723Guangzhou 510650People’s Republic of China Guangdong Provincial Key Laboratory of Digital Botanical Garden South China Botanical GardenChinese Academy of SciencesXingke Road 723Tianhe DistrictGuangzhou 510650People’s Republic of China School of life Sciences University of Chinese Academy of SciencesYuquanlu 19ABeijing 100049People’s Republic of China

Eight new diarylheptanoids,coriandralpinins A-H(1-8),were isolated from the rhizomes of Alpinia coriandriodora,an edible plant of the ginger *** structures,including the absolute configurations,were established by extensive spectroscopic analysis and ECD *** 1-8 have a 1,5-O-bridged diarylheptanoid structure featuring polyoxygenated aryl *** evaluated for intracellular antioxidant activity using t-BHP stressed RAW264.7 mac-rophages,all these compounds scavenged reactive oxygen species(ROS)in a concentration-dependent *** 3 and 5 also showed inhibitory activity against NO release in LPS-induced RAW 264.7 *** known flavonols,7,4′-di-O-methylkaempferol,7-O-methylquercetin,7,4′-di-O-methylquercetin,7,3′,4′-tri-O-methylquercetin,kaempferol 3-O-β-d-(6-O-α-l-rhamnopyranosyl)glucopyranoside,and 3-O-β-d-glucopyranuronosylquercetin were also isolated and characterized from the rhizomes.

关键词： Alpinia coriandriodora Diarylheptanoid Antioxidant Anti-inflammatory