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  • 1
    Article
    Article
    Du Kulturmedien AG
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  • 2
    Language: English
    In: PLoS ONE, 2011, Vol.6(4), p.e18949
    Description: An outdoor study was conducted to examine relationships between plant productivity and stress-protective phenolic plant metabolites. Twenty-two populations of the pasture legume white clover were grown for 4½ months during spring and summer in Palmerston North, New Zealand. The major phenolic compounds identified and quantified by HPLC analysis were glycosides of the flavonoids quercetin and kaempferol. Multivariate analysis revealed a trade-off between flavonoid accumulation and plant productivity attributes. White clover populations with high biomass production, large leaves and thick tap roots showed low levels of quercetin glycoside accumulation and low quercetin:kaempferol ratios, while the opposite was true for less productive populations. The latter included stress-resistant ecotypes from Turkey and China, and the analysis also identified highly significant positive relationships of quercetin glycoside accumulation with plant morphology (root:shoot ratio). Importantly, a high degree of genetic variation was detected for most of the measured traits. These findings suggest merit for considering flavonoids such as quercetin as potential selection criteria in the genetic improvement of white clover and other crops.
    Keywords: Research Article ; Biology ; Plant Biology
    E-ISSN: 1932-6203
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  • 3
    Language: English
    In: Surface & Coatings Technology, 2012, Vol.206(8), pp.2079-2088
    Description: The use of surface acoustic waves was studied as a means of evaluating surface-hardened steels. Four different grades of steel, 42CrMo4, C45, X153CrMoV12.1 and 90MnCrV8, were laser hardened up to a depth of 1.5 mm. The construction of a laser acoustic handheld probe enabled the measurement of the propagation velocity of the surface acoustic waves on large components. The measurement yields the velocity of the surface acoustic wave depending on frequency in a range from 1 to 10 MHz. The varying frequency enables the surface acoustic waves to penetrate varying depth of the material. It was investigated, if the hardening depth and the surface hardness can be deduced from this measurement. This methodology rests on the assumption that the velocity of the acoustic wave varies, if the microstructure of the steel is hardened by a martensitic transformation. Test samples were also annealed up to 620 °C to vary the hardness of the laser hardened zone. This was performed to investigate if the acoustic wave velocity correlates with the hardness. The sensitivity of the acoustic method, which can be used to determine the hardening depth and the hardness, depends on two aspects: 1. the amount of the effect of the martensitic hardening on the wave velocity of the steel and 2. the accuracy of the velocity that can be measured. A generalized dispersion curve was calculated using the theory of the surface acoustic wave to deduce the hardening depth from the velocity. Establishing this curve requires two measurements; the measurement of the wave velocities in the hardened and non-hardened steel. Using this methodology, it was found that the hardening depth could be determined with an error not higher than 15%. ► Surface acoustic waves can be used to determine the hardening depth of steels non-destructively. ► The hardened layer has a lower acoustic velocity than the non-hardened steel. ► This effect depends on the steel grade and is in the range from 45 to 70 m/s. ► A laser-acoustic hand-held probe was developed to measure the wave velocity. ► Hardening depth and surface hardness could be determined with an uncertainty of lower than 5%.
    Keywords: Laser Surface Hardening ; Non-Destructive Testing ; Hardening Depth ; Surface Acoustic Waves ; Laser Acoustics ; Engineering ; Chemistry
    ISSN: 0257-8972
    E-ISSN: 1879-3347
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  • 4
    Language: English
    In: The Journal of Urology, April 2013, Vol.189(4), pp.e798-e799
    Keywords: Medicine
    ISSN: 0022-5347
    E-ISSN: 1527-3792
    Source: ScienceDirect Journals (Elsevier)
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  • 5
    Language: English
    In: The Journal of Urology, April 2012, Vol.187(4), pp.e788-e788
    Keywords: Medicine
    ISSN: 0022-5347
    E-ISSN: 1527-3792
    Source: ScienceDirect Journals (Elsevier)
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  • 6
    Language: English
    In: The Journal of Urology, April 2012, Vol.187(4), pp.e512-e513
    Keywords: Medicine
    ISSN: 0022-5347
    E-ISSN: 1527-3792
    Source: ScienceDirect Journals (Elsevier)
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  • 7
    Language: English
    In: Urology, October 2017, Vol.108, pp.7-10
    Description: To link to full-text access for this article, visit this link: http://dx.doi.org/10.1016/j.urology.2017.04.042 Byline: Hendrik Heers, Annette Ramaswamy, Rainer Hofmann Article History: Received 28 January 2017; Accepted 25 April 2017 Article Note: (footnote) Financial Disclosure: The authors declare that they have no relevant financial interests.
    Keywords: Medicine
    ISSN: 0090-4295
    E-ISSN: 1527-9995
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  • 8
    Language: English
    In: The New phytologist, December 2015, Vol.208(4), pp.1188-201
    Description: The transcriptional regulation of four phylogenetically distinct members of a family of Kunitz proteinase inhibitor (KPI) genes isolated from white clover (Trifolium repens; designated Tr-KPI1, Tr-KPI2, Tr-KPI4 and Tr-KPI5) has been investigated to determine their wider functional role. The four genes displayed differential transcription during seed germination, and in different tissues of the mature plant, and transcription was also ontogenetically regulated. Heterologous over-expression of Tr-KPI1, Tr-KPI2, Tr-KPI4 and Tr-KPI5 in Nicotiana tabacum retarded larval growth of the herbivore Spodoptera litura, and an increase in the transcription of the pathogenesis-related genes PR1 and PR4 was observed in the Tr-KPI1 and Tr-KPI4 over-expressing lines. RNA interference (RNAi) knock-down lines in white clover displayed significantly altered vegetative growth phenotypes with inhibition of shoot growth and a stimulation of root growth, while knock-down of Tr-KPI1, Tr-KPI2 and Tr-KPI5 transcript abundance also retarded larval growth of S. litura. Examination of these RNAi lines revealed constitutive stress-associated phenotypes as well as altered transcription of cellular signalling genes. These results reveal a functional redundancy across members of the KPI gene family. Further, the regulation of transcription of at least one member of the family, Tr-KPI2, may occupy a central role in the maintenance of a cellular homeostasis.
    Keywords: Kunitz Proteinase Inhibitor (Kpi) ; Rnai Gene Silencing ; Trifolium Repens ; Insect Herbivory ; Plant Development ; White Clover ; Genes, Plant ; Multigene Family ; Phenotype ; Transcription, Genetic ; Peptide Hydrolases -- Metabolism ; Peptides -- Genetics ; Plant Proteins -- Genetics ; Trifolium -- Genetics
    ISSN: 0028646X
    E-ISSN: 1469-8137
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  • 9
    Language: English
    In: World Review of Entrepreneurship, Management and Sustainable Development, 2011, Vol 7 Issue 2, pp 155 - 173
    Description: The article addresses the question 'What makes an e-shop successful?' by providing various reference models. These reference models are for the obvious retail evolution, for quality and retail sales, for pricing and quality of products, and for pricing and quality of the sales process (i.e., selling). The models allow identifying success factors in e-commerce. A focus is placed on the aspect of level and stability of prices in electronic retailing, since this forms the core of the economic success of the latter.
    Keywords: information management; e-commerce; electronic commerce; electronic shops; e-shops; shop design; product quality; pricing; price theory; electronic retailing; e-retailing; retail evolution; shopping; retail sales; selling processes; success factors; price stability; economic success; entrepreneurs; retail trade; entrepreneurship; entrepreneurialism; management; sustainable development; sustainability.
    ISSN: 1746-0573
    ISSN: 17460573
    ISSN: 1746-0581
    ISSN: 17460581
    E-ISSN: 1746-0581
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  • 10
    Article
    Article
    Language: Spanish
    In: Anuario de la Facultad de Derecho, 2015, Issue 8, pp.239-249
    Description: En la primera parte de esta contribución se presentan el contenido y el mecanismo de supervisión del Convenio marco para la protección de las minorías nacionales del Consejo de Europa como el tratado más importante en esta materia en Europa. Se trata también qué grupos de personas constituyen una minoría nacional en el derecho internacional y cuál podría ser el papel de los Ombudsman en el contexto del Convenio marco. En la segunda parte se presentan los aspectos los más importantes de la Declaración de las Naciones Unidas sobre los derechos de los pueblos indígenas de 2007.
    Description: The article presents, in its first part, an over view over contents and monitoring system of the 1995 Council of Europe Framework Convention for the Protection of National Minorities as the most important treaty in this field in Europe. Ital so discusses the questions which groups of persons constitute a national minority under international law and which could be the role of Ombudsmen in the implementation of this Convention. In its second part, the article briefly introduces the major aspects of the United Nations Declaration on the Rights of Indigenous Peoples of 2007.
    Keywords: Minorías Nacionales ; Protección Internacional ; Convenio Marco Del Consejo De Europa ; Pueblos Indígenas ; Declaración De Las Naciones Unidas Sobre Los Derechos De Los Pueblos Indígenas ; National Minorities ; International Protection ; Council Of Europe Framework Convention ; Indigenous Peoples ; United Nationas Declarationon The Protection Of The Rights Of Indigenous Peoples
    ISSN: 1888-3214
    Source: Fundación Dialnet
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