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Stimulatory effect of lanthanum nitrate on the root tuber yield of pseudostellaria heterophylla via improved photosynthetic characteristics

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Journal of rare Earths 2017年第6期35卷 610-620页

作者： ma Yingli zOU Huichao GU Hui SHI Dawei GAO Wenxiang zHANG Yufeng XIE Yinfeng Co-Innovation Center for Sustainable Forestry in Southern China College of Biology and the Environment Nanjing Forestry University Nanjing 210037 China

the stimulatory effects and associated mechanism of lanthanum nitrate on the root tuber yield of the traditional Chinese medicinal plant pseudostellaria heterophylla, by means of improved photosynthetic characteristics, were investigated. Field experiments were conducted and the foliage was sprayed with varying concentrations of lanthanum nitrate. the results indicated that growth indexes, chlorophyll and carotenoid contents initially increased, and then decreased in a dose-dependent manner with increasing concentrations of lanthanum nitrate. the fresh and dry weights of root tuber yield per unit area significantly increased by 58.34% and 56.87% with a lanthanum nitrate concentration of 100 mg/l, respectively, compared with the control. Appropriate concentrations of lanthanum nitrate were found to alleviate photosynthetic depression at midday, as well as improve the mean values of photosynthetic rate（pn）, stomatal conductance（Gs） and transpiration rate（tr） associated with the diurnal variation in photosynthetic parameters, while reducing intercellular CO2 concentration（Ci）. During the experiment, the chlorophyll fluorescence parameters Fv/Fm, Fv＇/Fm＇, ΦpSII and qp increased initially and then decreased along with the increasing concentration of lanthanum nitrate, while NpQ followed the opposite trend. Correlation analysis revealed that pn had a significantly positive relationship with seedling height, ground diameter, chlorophyll and carotenoid contents, Gs and ΦpSII, while a negative relationship was observed with Ci and NpQ. Grey relational analysis（GrA） indicated that photosynthetic pigments, ΦpSII and qp were the primary factors impacting photosynthesis. these results suggested that the application of an appropriate concentration of lanthanum nitrate（100 mg/l） was effective in improving growth, root tuber yield and photosynthetic characteristics of psendoste llaria（p） heterophylla. the regulatory effect of lanthanum nitrate on photosynthesis was related to the p

关键词： photosynthetic lanthanum nitrate chlorophyll tuber stomatal photosynthesis transpiration pSII seedling

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IVIM提高术前评估肝细胞癌微血管侵犯

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国际医学放射学杂志 2019年第6期 751-752页

作者： Y.Wei z.X.Huang H.H.tang l.p.Deng Y.Yuan J.X.li 袁源 Department of radiology West China Hospital Sichuan University

摘要目的前瞻性评估体素内不相干运动(IVIM)和常规影像特征在肝细胞癌(HCC)病人术前预测微血管侵犯(MVI)中的潜在作用。方法本研究获得了机构伦理委员会

关键词：微血管侵犯肝细胞癌术前评估

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pulping performance of transgenic poplar with depressed Caffeoyl-CoA O-methyltransferase

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Chinese Science Bulletin 2008年第22期53卷 3553-3558页

作者： WEI JianHua WANG Yanzhen WANG Hongzhi lI ruiFen lIN Nan ma rongCai QU leQing SONG Yanru Beijing Agro-Biotechnology research Center Beijing Academy of Agriculture and Forestry Sciences Beijing 100097 China Institute of Botany Chinese Academy of Sciences Beijing 100093 China

this paper evaluated pulping performance of 3-year-old field-grown transgenic poplar (populus tremula × populus alba). the transgenic poplar with anti-sense CCoAOMt had an about 13% decreased lignin content, in which a slight increment was found in S/G ratio. Chemical analysis showed that the transgenic poplar had significantly less benezene-ethanol extractive than that of control wood, but no significant differences were found in contents of ash, cold water extractive, hot water extractive, 1% NaOH extractive, holocellulose, pentosans and cellulose. Fiber assay demonstrated that down-regulation of CCoAOMt expression improved the fiber quality in transgenic poplar. Kraft pulping showed that lower lignin in transgenic poplar led to remarkable improved pulp quality and increased pulp yield.

关键词：白杨 CCoAOMt 制浆过程甲基转化酶

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pArAMEtrIC StUDY FOr tHE prEpArAtION OF AlIGNED SINGlE-WAllED CArBON NANOtUBES BY ANODE-ArC DISCHArGE MEtHOD

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Acta Metallurgica Sinica(English letters) 2005年第3期18卷 261-268页

作者： J.F.Dai Q.Wang W.X.li z.Q.Wei G.J.Xu StateKeylaboratoryofNewNonferrousMetalmaterials DepartmentofPhysicsLanzhouUniversityofTechnologyLanzhou730050China StateKeylaboratoryofNewNonferrousMetalmaterials InstituteofMaterialsLanzhouUniversityofTechnologyLanzhou730050China

Well aligned quasi-straight single-walled carbon nanotubes (SWCNts) and straight SWCNts bundle have been prepared in large scale by anode-arc vaporization of gr aphite with metallic catalysts. Various parameters such as the catalyst preparat ion, the kinds and pressure of the buffer gases, the quantity of anode-arc curre nt intensity, and the method of purification have been examined. the influence o f these parameters on the deposited carbon yield is reported, together with obse rvations of the produced material. Improvement in synthetic techniques has resul ted in the optimal conditions for the production of large quantities of high qua lity SWCNts in our semi-continuous synthesis method. the formation of carbon nan otubes (CNts) was studied briefly in this paper. Owing to the magnetic pinching effect of arc current, the CNts arrange in parallel lines along the arc current direction.

关键词： carbon nanotubes anode-arc preparation catalyst

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Simulation Experiment of loading Influence to reinforcement Corrosion Affected by Stray Current and Salt Solution

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武汉理工大学学报 2010年第17期32卷 147-151页

作者： tENG H W YANG S M SHU z C HUANG Y HUO D College of Architecture and Civil Engineering Beijing University of TechnologyBeijing 100124China Beijing Key lab of Earthquake Engineering and Structural retrofit Beijing University of TechnologyBeijing 100124China

According to the service environment of subway structure,experiment is carried out to simulate influence of different loading levels to reinforcement corrosion of r.C element affected by stray current and chlorine salt solution. the current density of the corrosion is measured with the linear polarization resistance method,together with the qualitative analysis and quantitative calculation. Experiment shows that rebar corrosion current density increase accordingly with the increase of loading level. the quantitative relations and the time of rust corrosion of reinforcement are obtained.

关键词： reinforcement corrosion stray current chloride ion solution loading level simulation experiment

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research of Nanostructures Formation during Self-propagating High-temperature Synthesis of Boride-Containing Composite materials

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Journal of materials Science and Chemical Engineering 2014年第1期2卷 66-69页

作者： D. S. raimkhanova r. G. Abdulkarimova z. A. mansurov Institute of Combustion problems Almaty Kazakhstan

this paper considers the technique of obtaining boride-containing nanostructured composite materials by the method of self-propagating high-temperature synthesis (SHS). It is shown that the selection of regimes and conditions of reactions allows receiving materials on the basis of titanium and chromium borides as well as aluminum oxide with finely dispersed structure and high mechanical properties.

关键词： Aluminum Oxide titanium Diboride Chromium Diboride Composite materials Nanomaterials SHS

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Unsteady MHD Mixed Convection Flow with Slip of a Nanofluid in the Stagnation region of an Impulsively rotating Sphere with Effects of thermal radiation and Convective Boundary Conditions

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World Journal of Mechanics 2018年第5期8卷 137-160页

作者： Sameh E. Ahmed z. z. rashed mathematics Department Faculty of Science South Valley University Qena Egypt mathematics Department Faculty of Science and Arts Jouf University Qurayyat KSA

Unsteady magnetohydrodynamic mixed convection flow of an electrically conducting nanofluid in a stagnation region of a rotating sphere is studied numerically in the present article. Slip and convective boundary conditions are imposed to surface of the sphere and the thermal radiation effects are taken into account. the nanofluid is simulated using Buongiorno’s nanofluid model and the nanofluid particle fraction on the boundary is considered to be passively rather than actively controlled. Non-similar solutions are applied on the governing equations and the matlAB function bvp4c is used to solve the resulting system. Effects of the key-parameters such as slip parameter, Biot number, radiation parameter, rotation parameter, lewis number and Brownian motion parameter on the fluid flow, temperature and nanoparticle volume fraction characteristics are examined. Details of the numerical solution and a comprehensive discussion with the physical meaning for the obtained results are performed. the results indicated that the increase in slip parameter enhances the velocity profiles, while it decreases the temperature distributions. Also, the increase in either slip parameter or Biot number causes an improvement in the rate of heat transfer.

关键词： MHD Slip Nanofluids Convective Condition radiation

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Characterization of a pDr type ABC transporter gene from wheat (triticum aestivum l.)

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Chinese Science Bulletin 2009年第18期54卷 3249-3257页

作者： SHANG Yi XIAO Jin ma lulin WANG HaiYan QI zengJun CHEN peiDu lIU DaJun WANG XiuE State Key laboratory of Crop Genetics and Germplasm Enhancement Cytogenetics Institute Nanjing Agricultural UniversityNanjing 210095 China Institute of Crop research and Nuclear technique Utilization Zhejiang Academy of Agricultural Science Hangzhou 310021 China

DON, as a virulence factor, plays an important role in the infection of Fusarium graminearum in wheat. the infection ability of F. graminearum depends on its capacity of producing DON. the production of DON by F. graminearum is significantly decreased in the wheat varieties with scab resistance. In this study, GeneChip analysis indicated that an ESt encoding an Atp-binding cassette (ABC) transporter was up-regulated by 45 times in a wheat landrace Wangshuibai, which is resistant to DON accumulation. A pair of ESt-derived primers were designed based on the ESt sequence, and a clone was then isolated from a wheat genomic DNA tAC library. the tAC clone was sequenced using chromosome walking and gene prediction was conducted using Softberry. A cDNA clone of this gene was subsequently isolated from Wangshuibai induced by DON using gene-specific primers designed according to the untranslated sequence of the gene. the genome size of the gene is 7377 bp, consisting of 19 exons with coding sequences of 4308 bp. It encodes a protein with 1435 amino acid residues and the calculated molecular weight is about 161 kD. BlASt analysis indicated that the gene may belong to pleiotropic drug resistance (pDr) sub-family, and hence designated as tapDr1 (triticum aestivum pleiotropic drug resistance). tapDr1 was located on chromosome 5A of wheat using nullisomic-tetrasomic lines of Chinese Spring. tapDr1 was up-regulated by induction of both DON and F. graminearum. Expression patterns of tapDr1 were different in wild-type Wangshuibai and the fast-neutron induced Wangshuibai mutant lacking FHB1, a major Qtl of FHB resistance and DON resistance in chromosome arm 3BS. these results suggested that tapDr1 might be a candidate gene responsible for DON ac-cumulation resistance. the expression profile showed that tapDr1 expression was neither induced by hormones typically involved in biotic stress, such as JA and SA, nor by abiotic stresses, such as heat, cold, wounding and NaCl. However, tapDr1

关键词：小麦多样性 pDr ABC

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prevalence of low inflammatory tinea genitalis in southern China

Prevalence of low inflammatory tinea genitalis in southern C...

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多彩菌物美丽中国——中国菌物学会2019年学术年会

作者： Yin S Xie X li M zhou X Wei l Chen z Chen J lu C de Hoog GS lai W Feng p Department of Dermatology Third Affiliated Hospital Sun Yat-sen University Westerdijk Fungal Biodiversity Institute

Background Emergence of highly inflammatory genital dermatophyte infections has been reported from Southeast Asia. In view of this, knowledge of the non-outbreak fungal flora of the genitals is required as a baseline *** We present our 12-year experience in a tertiary clinic with the diagnosis of scrotal fungal *** A retrospective review was performed of patients with a diagnosis of scrotal fungal infections proven by direct microscopy and culture. Clinical, mycological and treatment data were *** In total, 35 male patients were identified, of which 27 concerned dermatophyte infections and eight were yeasts. Nannizzia gypsea was the most common agent（48.6%）, presenting as thick pseudomembraneous lesions limited to the scrotum. trichophyton rubrum（22.9%） and Epidermophyton floccosum（5.7%） mainly presented erythematous, dry and scaly lesions and involving more sites besides the scrotum. Candida albicans（n=3）, ***（n=2）, C. guilliermondii（n=1） and trichosporon asteroides（n=1）, presented various lesions. Sports,sweating and concurrent tineas are hypothesized as predisposing *** the prevalent causative agent of scrotum infections is N. gypsea, but wide species diversity is observed. All infections show mild skin inflammation. It is suggested that this genital fungal flora represents the current situation prior to clonal dermatophyte outbreaks.

关键词： tinea genitalis Nannizzia gypsea trichophyton rubrum pseudomembraneous lesion

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大电网调控人机混合增强智能:概念内涵、应用框架、关键技术以及系统验证

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中国电机工程学报 2024年第17期44卷 6787-6810,I0008页

作者：郭剑波范士雄蔡忠闽朱凤华宋明黎张俊卜广全黄彦浩高正男马士聪中国电力科学研究院有限公司北京市海淀区100192 西安交通大学电信学部陕西省西安市710049 中国科学院自动化研究所北京市海淀区100190 浙江大学计算机科学与技术学院浙江省杭州市310027 武汉大学电气与自动化学院湖北省武汉市430072

伴随深度学习等人工智能技术的飞速发展,通过数字化赋能电力来实现电网的信息化、数字化和智能化成为未来新型电力系统发展的必然趋势。人工智能技术在电网调控应用研究广泛,但是实际应用过程中,由于电网不确定性、开放性和脆弱性造成... 详细信息

伴随深度学习等人工智能技术的飞速发展,通过数字化赋能电力来实现电网的信息化、数字化和智能化成为未来新型电力系统发展的必然趋势。人工智能技术在电网调控应用研究广泛,但是实际应用过程中,由于电网不确定性、开放性和脆弱性造成的模型可信性和可解释性等问题,使得单纯的人工智能技术应用于电网调控领域难以满足安全可靠应用的需求。为了解决上述问题,需要引入人类的监督与互动,融合调控人员的智能与机器智能,实现电网调控人机智能的混合增强。该文首先介绍混合增强智能技术的概念和内涵以及在不同领域的研究现状。随后,针对电网调控业务特点,从人工智能和调控应用两个维度,提出电网调控人机混合增强智能的应用框架以及电网调控人机交互协同的目标和基本原则。在此基础上,分析和讨论电网调控人机混合增强智能所涉及的关键技术,并研发大电网调控人机混合紧急控制决策支持验证系统,用于省级规模电网的热稳调整、频率控制等多种电网调控场景应用验证,为人机混合增强智能技术在电网调控领域的应用提供参考和借鉴。

关键词：电网调控人工智能人机混合增强智能人机协同态势感知混合决策

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