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Chemical Composition and Biological Activities of Essential Oil from the Rhizomes of Iris bulleyana

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Agricultural Sciences in China 2009年第6期8卷 691-696页

作者： DENG Guo-bin zhang han-bo XUE Hong-fen CHEN Shan-na CHEN Xiao-lan Department of Biology Yunnan University Kunming 650091 P.R.China

Iris bulleyana has long been used as a remedy for detoxication and detumescence. Hydrodistillation was used to extract the essential oil from its rhizomes, and 0.23% oil yield was obtained. Using gas chromatography-mass spectrometry （GC- MS） analysis, 31 chemicals including aristolone, cuparene, β-gurjunene, δ-amorphene, α-muurolene, α-cadinol, camphor, γ-elemene, and τ-cadinol were identified. The essential oil exhibited antibacterial activity against Acetobacter calcoacetica, Bacillus subtillis, Clostridium sporogenes, Clostridium perfringens, Escherichia coli, Salmonella typhii, Staphylococcus aureus, and Yersinia enterocolitica. Its antifungal and antioxidant activities were also tested.

关键词： Iris bulleyana essential oil antibacterial antifungal antioxidant GC-MS chemical components

Study of full waveform inversion based on L-BFGS algorithm

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Global Geology 2012年第2期15卷 161-165页

作者： DENG Wubing han Liguo zhang bo HUANG Fei han Miao College of Geo-Exploration Science and Technology Jilin University Changchun 130026 China

Full waveform inversion size of full waveform inversion will and the limitation of full waveform is mainly used to obtain high resolution velocity models of subsurface. The lead to a gigantic computation cost. Under the available computer resource inversion, the authors propose L-BFGS algorithm as the optimization method to solve this problem. In order to demonstrate the flexibility of the method, three different numerical experi- ments have been done to analyze the properties of full waveform inversion based on L-BFGS.

关键词： L-BFGS numerical optimization acoustic wave equation initial model full waveform inversion

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一种新的DNA复制和转录模型

生物化学与生物物理进展 2001年第2期28卷 148-151页

作者：张汉波丁骅孙云南大学生物系昆明650091

DNA复制和转录有两种模型 ,一种是传统的滑动模型 ,复制和转录发生时参与反应的蛋白质沿DNA模板滑动 .在另一种新提出的工厂模型中 ,固定在核结构上的蛋白质拉动模板来完成DNA的复制和转录 .来自生物化学、生物物理学和细胞生物学等的... 详细信息

DNA复制和转录有两种模型 ,一种是传统的滑动模型 ,复制和转录发生时参与反应的蛋白质沿DNA模板滑动 .在另一种新提出的工厂模型中 ,固定在核结构上的蛋白质拉动模板来完成DNA的复制和转录 .来自生物化学、生物物理学和细胞生物学等的实验证据表明 ,新的工厂模型是生物活体细胞内真实的复制和转录模式 .

关键词： DNA复制转录滑动模型工厂模型

Seismic acceleration signal analysis and application

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Applied Geophysics 2020年第1期17卷 67-80,168页

作者： zhang Huai-Bang Li Lu-Ming zhang Guang-De zhang bo-han Sun Miao-Miao School of Geophysics Chengdu University of TechnologyChengdu 610059China The Shengli Branch of the Sinopec Petroleum Engineering Geophysics Co. Ltd.Dongying 257086China School of Ocean and Earth Sciences Tongji UniversityShanghai 200092China

Although various types of geophones are applied in seismic exploration,there are only three common types of signals produced by geophones:displacement,velocity,and acceleration ***,our understanding of the signal characteristics,such as the generation mechanism,the geophysical properties,and the significance of the corresponding rock physics,remains unclear,which makes it difficult to both scientifically evaluate and take full advantage of the different types of *** this paper,the mechanism by which seismic waves are generated is studied based on the spring–damped vibration *** physical characteristics of the three above-mentioned signal types and the relationships among the physical properties of the signals and medium are analyzed,as well as the signalto-noise ratio(SNR),resolution,and spectrum *** on laboratory tests,field experiments,and applications,we obtained the following *** acceleration signal reflects the elastic characteristics of the medium and the change rules,and the signal strength is positively correlated with physical property *** acceleration signal has favorable attributes,such as small distortion,high fidelity,strong high-frequency amplitudes,and a wide frequency ***,the acceleration signal is more suitable for high-precision seismic exploration of complex *** addition,the P-wave acceleration signal more accurately reflects the elastic Young modulus,shear modulus,and density changes than the velocity ***,the sensitivity decreases with increasing shear modulus and *** the S-wave,the acceleration signal is more sensitive to the shear modulus and density than the velocity signal.

关键词： acceleration signal velocity signal signal fidelity resolution signal-to-noise ratio

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ITTO薄膜的耐腐蚀稳定性和表面能研究

材料保护 2017年第3期50卷 29-33,61页

作者：张波邵汉良赵培常州机电职业技术学院江苏常州213164 常州中科常泰等离子体技术有限公司江苏常州213032 中国科学院上海技术物理研究所上海200083

为了提高透明导电薄膜的综合性能,采用磁控溅射法制备了Ta掺杂ITO(ITTO)薄膜,对薄膜在不同模拟环境介质溶液中的电学稳定性及电化学行为进行了测试,分析了处于特定介质环境中薄膜的相对电阻变化和表面形貌;基于薄膜表面接触角的测量,计... 详细信息

为了提高透明导电薄膜的综合性能,采用磁控溅射法制备了Ta掺杂ITO(ITTO)薄膜,对薄膜在不同模拟环境介质溶液中的电学稳定性及电化学行为进行了测试,分析了处于特定介质环境中薄膜的相对电阻变化和表面形貌;基于薄膜表面接触角的测量,计算了薄膜的表面能和极性度。结果表明:薄膜在各环境介质中都发生了自钝化现象,ITTO薄膜显示了较好的化学稳定性和热稳定性,除了晶体结构的影响之外,稳定性较好的氧化钽也提高了薄膜的化学稳定性和热稳定性;掺杂使得薄膜的接触角减小,表面能增大,表面极性度增加,薄膜的表面状态和靠近费米能级处引入d轨道的活性高价原子的存在是促进表面能提高的主要原因。

关键词： Ta掺杂ITO薄膜磁控溅射化学稳定性电化学行为接触角表面能

AAV2-PDE6B restores retinal structure and function in the retinal degeneration 10 mouse model of retinitis pigmentosa by promoting phototransduction and inhibiting apoptosis

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Neural Regeneration Research 2025年第8期20卷 2408-2419页

作者： Ruiqi Qiu Mingzhu Yang Xiuxiu Jin Jingyang Liu Weiping Wang Xiaoli zhang Jinfeng han bo Lei Henan Eye Hospital Henan Provincial People’s HospitalPeople’s Hospital of Zhengzhou UniversityZhengzhouHenan ProvinceChina Eye Institute Henan Academy of Innovations in Medical ScienceZhengzhouHenan ProvinceChina Branch of National Clinical Research Center for Ocular Disease Henan Provincial People’s HospitalZhengzhouHenan ProvinceChina Academy of Medical Science Zhengzhou UniversityZhengzhouHenan ProvinceChina

Retinitis pigmentosa is a group of inherited diseases that lead to retinal degeneration and photoreceptor cell ***,there is no effective treatment for retinitis pigmentosa caused by PDE6B ***-associated virus(AAV)-mediated gene therapy is a promising strategy for treating retinitis *** aim of this study was to explore the molecular mechanisms by which AAV2-PDE6B rescues retinal *** do this,we injected retinal degeneration 10(rd10)mice subretinally with AAV2-PDE6B and assessed the therapeutic effects on retinal function and structure using dark-and light-adapted electroretinogram,optical coherence tomography,and ***-independent acquisition-mass spectrometry-based proteomic analysis was conducted to investigate protein expression levels and pathway enrichment,and the results from this analysis were verified by real-time polymerase chain reaction and western ***2-PDE6B injection significantly upregulated PDE6βexpression,preserved electroretinogram responses,and preserved outer nuclear layer thickness in rd10 *** expressed proteins between wild-type and rd10 mice were closely related to visual perception,and treating rd10 mice with AAV2-PDE6B restored differentially expressed protein expression to levels similar to those seen in wild-type *** Encyclopedia of Genes and Genome analysis showed that the differentially expressed proteins whose expression was most significantly altered by AAV2-PDE6B injection were enriched in phototransduction ***,the phototransductionrelated proteins Pde6α,Rom1,Rho,Aldh1a1,and Rbp1 exhibited opposite expression patterns in rd10 mice with or without AAV2-PDE6B ***,Bax/Bcl-2,p-ERK/ERK,and p-c-Fos/c-Fos expression levels decreased in rd10 mice following AAV2-PDE6B *** data suggest that AAV2-PDE6B-mediated gene therapy promotes phototransduction and inhibits apoptosis by inhibiting the ERK signaling pathway and upr

关键词： apoptosis AAV2-PDE6B ERK1/2 gene therapy phototransduction proteomics rd10 retinitis pigmentosa

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考虑驾驶人特性的一主多从混合博弈容错控制

中国公路学报 2021年第9期34卷 161-171页

作者：张博涵卢少波谢文科谢菲菲重庆大学机械与运载工程学院重庆400044

为保证线控底盘电动汽车在遭遇执行器失效时的稳定性,并考虑人-车交互行为,提出了以驾驶人为领导者的一主多从(Single-leader-multiple-follower,SLMF)混合博弈容错控制框架。为实现驾驶人-车辆的交互控制,首先建立了两者的耦合模型。其... 详细信息

为保证线控底盘电动汽车在遭遇执行器失效时的稳定性,并考虑人-车交互行为,提出了以驾驶人为领导者的一主多从(Single-leader-multiple-follower,SLMF)混合博弈容错控制框架。为实现驾驶人-车辆的交互控制,首先建立了两者的耦合模型。其次,将驾驶人及5个底盘子系统即主动前轮转向(Active Front Steering,AFS)系统和4个轮毂电机建模为博弈中的6个参与者,基于Stackelberg主从博弈与多人合作博弈设计了SLMF混合博弈控制框架。考虑驾驶人具有优先控制权限及执行器对驾驶人行为的补偿作用,基于Stackelberg博弈理论建立了驾驶人与底盘子系统的主从博弈模型,其中驾驶人作为领导者通过感知跟随者的行为做出转向决策,而5个底盘子系统被建模为跟随者。由于跟随者追求共同的横向稳定控制目标,因此基于合作博弈理论建立了合作模型,并对领导者的转向策略做出最优响应。最后,为研究跟随者之间追求不同目标导致不合作时的控制效果,设计了非合作Nash博弈与Stackelberg博弈相结合的混合博弈为对比方法,通过实时硬件在环测试验证并对比了2种方法。结果表明:针对不同风格的驾驶人,所设计的方法可以保证遭遇执行器卡死失效车辆的稳定性。与不合作的情况相比,2种不同风格的驾驶人驾驶的车辆在底盘子系统合作时,车辆稳定性分别提升了54.62%和53.78%,驾驶人工作负荷分别降低了31.79%和36.07%。

关键词：汽车工程容错控制一主多从博弈人-车交互合作博弈分布式驱动汽车主从博弈

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叶面微环境和微生物群落

微生物学通报 2007年第4期34卷 761-764页

作者：施雯张汉波云南大学生命科学学院生物学系昆明650091

叶面独特的生物学特征引起了越来越多研究者的关注。对植物叶面微环境和叶面微生物的研究动态进行了综述,重点介绍了叶面环境的特点、叶面微生物群落的特征、叶面微生物的入侵方式和定居位置。最后对叶面微环境的研究和应用前景进行了... 详细信息

叶面独特的生物学特征引起了越来越多研究者的关注。对植物叶面微环境和叶面微生物的研究动态进行了综述,重点介绍了叶面环境的特点、叶面微生物群落的特征、叶面微生物的入侵方式和定居位置。最后对叶面微环境的研究和应用前景进行了展望。

关键词：叶面叶面微生物定居

Preparation and characterization of LaB_6 ultra fine powder by combustion synthesis

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Transactions of Nonferrous Metals Society of China 2011年第8期21卷 1790-1794页

作者：豆志河张廷安张志琦张含博赫冀成东北大学多金属共生矿生态化利用教育部重点实验室沈阳110004

High-purity,homogeneous and ultra fine LaB6 powders were prepared by combustion *** effects of reactant ratio and molding pressure on the phase and morphology of the combustion products were *** combustion products and leached products were analyzed by XRD,SEM and *** results indicate that the combustion product consists of LaB6,MgO and a little *** combustion product becomes denser and harder when the molding pressure *** purity of LaB6 is higher than 99.0%.The LaB6 particle size is in range of 1.92-3.00 μm and the lattice constant of LaB6 is a=0.414 8 nm.

关键词： combustion synthesis lanthanum hexaboride Mg3B2O6