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1069篇 您的检索式:作者名="Nelling"
    题名 作者 年代 出处 被引量
1Model-Based Integrated Methods for Quantitative Estimation of Soil Salinity from Hyperspectral Remote Sensing Data:A Case Study of Selected South African Soils显示文摘Soil salinization is a land degradation process that leads to reduced agricultural yields. This study investigated the method that can best predict electrical conductivity (EC) in dry soils using individual bands, a normalized difference salinity index (NDSI), partial least squares regression (PLSR), and bagging PLSR. Soil spectral reflectance of dried, ground, and sieved soil samples containing varying amounts of EC was measured using an ASD FieldSpec spectrometer in a darkroom. Predictive models were computed using a training dataset. An independent validation dataset was used to validate the models. The results showed that good predictions could be made based on bagging PLSR using first derivative reflectance (validation R2 = 0.85), PLSR using untransformed reflectance (validation R2 = 0.70), NDSI (validation R2 = 0.65), and the untransformed individual band at 2257 nm (validation R2 = 0.60) predictive models. These suggested the potential of mapping soil salinity using airborne and/or satellite hyperspectral data during dry seasons.Z. E. MASHIMBYE M. A. CHO J. P. NELL W. P. DE CLERCQ A. VAN NIEKERK D. P. TURNER 2012Pedosphere2012,22,5:29
2Arbuscular mycorrhizal fungal colonization of Glycyrrhiza glabra roots enhances plant biomass,phosphorus uptake and concentration of root secondary metabolites显示文摘Arbuscular mycorrhizal(AM)fungi penetrate the cortical cells of the roots of vascular plants,and are widely distributed in soil.The formation of these symbiotic bodies accelerates the absorption and utilization of mineral elements,enhances plant resistance to stress,boosts the growth of plants,and increases the survival rate of transplanted seedlings.We studied the effects of various arbuscular mycorrhizae fungi on the growth and development of licorice(Glycyrrhiza glabra).Several species of AM,such as Glomus mosseae,Glomus intraradices,and a mixture of fungi(G.mosseae,G.intraradices,G.cladoideum,G.microagregatum,G.caledonium and G.etunicatum)were used in our study.Licorice growth rates were determined by measuring the colonization rate of the plants by the fungi,plant dry biomass,phosphorus concentration and concentration of secondary metabolites.We established two cloned strains of licorice,clone 3(C3)and clone 6(C6)to exclude the effect of genotypic variations.Our results showed that the AM fungi could in fact increase the leaf and root biomass,as well as the phosphorus concentration in each clone.Furthermore,AM fungi significantly increased the yield of certain secondary metabolites in clone 3.Our study clearly demonstrated that AM fungi play an important role in the enhancement of growth and development of licorice plants.There was also a significant improvement in the secondary metabolite content and yield of medicinal compounds from the roots.HongLing LIU Yong TAN Monika NELL Karin ZITTER-EGLSEER Chris WAWSCRAH Brigitte KOPP ShaoMing WANG Johannes NOVAK 2014Journal of Arid Land2014,6,2:13
3合肥市城市生活垃圾管理现状和实施措施显示文摘介绍了合肥市城市生活垃圾的管理机制和垃圾处理、处置的现状,分析了管理中存在的问题,并对今后的管理提出相关的建议和解决措施。吴克 蔡敬民 俞志敏 刘斌 金杰 Michael Nelles Petja Stoever Thomas Fritz 2005环境卫生工程2005,13,3:13
4德国城市生活垃圾处理中MBT技术现状显示文摘介绍了德国的机械生物垃圾处理技术现状和基本工艺条件。为了保护环境和大气,德国从2005年6月起,开始执行新的垃圾管理标准。要求所有的生物垃圾在填埋前必须加以处理。城市居民生活垃圾填埋前垃圾燃烧值控制标准在6000kJ/kg以下。为此,作为德国生物垃圾处理的重要行业——机械生物垃圾处理将面临新的挑战,以达到新标准的要求。本文试图通过介绍德国的机械垃圾处理技术,为我国垃圾的综合管理提供经验和参考。吴克 Michael Nelles 蔡敬民 俞志敏 金杰 刘斌 2005中国资源综合利用2005,23,9:11
5Efficient Silencing of Endogenous MicroRNAs Using Artificial MicroRNAs in Arabidopsis thaliana显示文摘我们这里报导内长的 microRNAs (miRNAs ) 的表示能是高效地在用人工的 miRNA (amiRNA ) 的 Arabidopsis thaliana (Arabidopsis ) 的 silenced 技术。我们证明设计指向成熟 miRNA 的 amiRNA 对所有 miRNA 家庭成员指导 silencing,而设计指向一个 miRNA 先锋抄本的茎环区域的 amiRNA 对指向的仅仅单个家庭成员指导 silencing。而且,我们的结果显示指向成熟 miRNA 和茎环顺序的 amiRNAs 通过 miRNA 先锋抄本的劈开指导 RNA silencing,它大概在 miRNA 生物的续生说的起始的阶段期间发生在一个植物房间的原子核。这建议小 RNA (sRNA ) 指导了 RNA 在植物的劈开不仅在细胞质,而且在原子核发生。许多植物 miRNA 基因家庭经由定序和生物信息的分析被识别了,,但是,迄今为止,仅仅这些的小 tranche 机能上地由于有效前面或反向的基因工具的缺乏被描绘了。我们的调查结果因此在植物为 miRNA 功能的分析提供一个新、强大的颠倒基因的工具。Andrew L. Eamens Claire Agius Nell A. Smith Peter M. Waterhouse Ming-Bo Wang 2011Molecular Plant2011,4,1:10
6城市食品废弃物高固体含量厌氧消化过程显示文摘在干式厌氧消化过程中,pH呈现先降后升趋势,ORP值初期迅速下降,中后期维持在-300mV左右,为产甲烷菌的生长提供了良好环境;消化早期营养丰富,微生物生长旺盛,纤维素酶活力与果胶酶活力较高,后期活力下降,主要以产甲烷菌群生长为主;氨氮与蛋白质在消化过程中变化趋势相反,后期含量相对较高;TS、VS变化呈下降趋势,去除率分别为54.96%,17.63%;CODcr从消化过程初始52332.66mg/L下降至28033.73mg/L,去除率为46.43%,累积产气量为24339mL;产气潜力为268.05mL/gTS,338.36mL/gVS。金杰 俞志敏 吴克 陈天虎 蔡敬民 Michael Nelles 2008包装与食品机械2008,26,5:9
7中德生物垃圾堆肥相关标准之比较显示文摘概述了德国和中国生物垃圾的产量及处理量以及德国和中国生物垃圾的主要堆肥方式等基本情况,列出了德国和中国堆肥的相关标准如物理参数、化学参数及生物学参数的标准,将中德堆肥相关标准进行了比较分析,指出了中德两国有关堆肥标准的异同及中国在堆肥标准方面的完善及努力方向.金杰 孙世群 Michael Nelles 蔡敬民 俞志敏 吴克 2006合肥学院学报(自然科学版)2006,16,1:8
8Semiconductor nanowires for photovoltaic and photoelectrochemical energy conversion显示文摘Nell P. Dasgupta Peidong Yang 2014Frontiers of physics2014,9,3:8
9BMW厌氧消化过程中产气性能影响因素研究显示文摘研究了农贸市场生物废弃物进行不同接种物浓度、颗粒度及pH值的厌氧发酵产气特性。结果表明:适宜的接种物浓度有利于微生物的生长、产气速率加快、产气量增大,接种物浓度为5/3和5/4在反应13天日产气量达到1400ml,甲烷含量超过50%以上;不同粒径下生物气体产量和甲烷气含量均有差异,颗粒度对发酵产气有一定影响,颗粒粒径的减小可使得表面积增大,提高气体产量,同时粒径的减小可以提高消化速率,可以促进生物过程,尤其是对起始的水解反应的促进,1cm大小的粒径在日产气量居最高水平达到1290ml,甲烷气体含量高达到51%;上料前初始pH值的调节有利于厌氧反应产生甲烷,碱度的作用主要是提供体系保持中性pH所需要的缓冲能力,将发酵液初始pH值调节至弱碱性,有利于厌氧发酵产气,增加甲烷含量,发酵罐中初始pH值调控为7.5的发酵罐产气量大且甲烷含量超过57%。金杰 吴克 蔡敬民 俞志敏 Michael Nelles Martin Faulstich 2006包装与食品机械2006,24,5:4
10Diffusion tensor pyramidal tractography in patients with anterior choroidal artery infarcts显示文摘Nelles M Gieseke J Flacke S 2008AJNR2008,29,:1
11Autoantibody profiling as early diagnostic and prognostic tool for rheumatoid arthritis显示文摘Nell VP Machold KP Stamm TA 2005Ann Rheum Dis2005,64,12:1
12Inflamed fat: what starts the fire7 显示文摘Nells JG Olefsky JM 2006J Clin Invest2006,116,:1
13the cytokine and chemokine expression profile of nucleus pul- posus cells:implications for degeneration and regeneration of the intervertebral disc显示文摘Kate L E Phillips Nell Chiverton Anthony LR Michael 2013Arthritis Res Ther2013,15,6:1
14The framework of tourism : towards definitions of tourism, tourists and the tourism industry 显示文摘Nell Leiper 1979Annals of Tourism Research1979,6,4:1
15Shaped Ceramics with Tunable Magnetic Properties from Metal-Containing Polymers 显示文摘MARK J M MADLEN G NElL C 2000Science2000,287,5:1
16Appl Bacteriology 显示文摘Nells H J De LeenheerA P J 1991(70): 151-1911991,,70:1
17Arm training induced brain plasticity in stroke studied with serial positron emission tomography显示文摘Nelles G Jentzen W Jueptner M 2001Neuroimage2001,13,6:1
18Association of systolic blood pres- sure with macrovascular and microvascular complications of type 2 dia- betes:prospective observational study显示文摘Adler AI Stratton IM Nell HA 2000BMJ2000,321,7258:1
19ISO/160 ratios in cherts associated with the saline lake deposits of East Africa 显示文摘O' Nell J Hay P 1973Earth and Plane- tsry Science letters1973,19,:1
20Load Transfer Mechanisms in Pile and Pile Groups 显示文摘O' NELL M W HAWKINS R S MAHAR L J 1982Geotechnical Engineering ASCE1982,108,12:1
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