2,765 research outputs found
Mechanica op de microcomputer
No full textAfscheidscollege van prof.dr.ir. J.G. Lekkerkerker (informele notities)
In situ beta decay dating by LA-ICP-MS/MS: applications
No full textThe development of in situ laser ablation tandem mass spectrometry (LA-ICP-MS/MS) has made a new range of isotopic systems readily accessible to geologists for dating minerals: Rb–Sr, Lu–Hf, K–Ca, and Re–Os. In these β-decay systems, the parent–daughter isotopes have the same atomic mass (e.g., 87Rb and 87Sr) which are not resolvable with single-quadrupole ICP-MS, and some are difficult or impossible to resolve with high resolution MC-ICP-MS/MS. Analysis of these geochronometers now enables direct dating of a wide range of geological processes in sedimentary and igneous settings, metamorphic terrains, and ore deposit systems. These isotopic systems also highlight the versatility of LA-ICP-MS/MS which utilizes a range of reaction gases to effectively resolve the isobaric interferences. Lu–Hf dating of garnet, apatite, and calcite uses NH3 to efficiently separate Lu from Hf as they form large cluster ions with different isotopic masses. Combining U–Pb and Lu–Hf isotopic systems for double-dating of apatite can be used to differentiate the high-temperature crystallization age by Lu–Hf from subsequent lower temperature overprinting by U–Pb. Rb–Sr dating of micas and feldspars has gained recent popularity, where Sr readily reacts with N2O or SF6 while Rb is unreactive. K–Ca isotopes in feldspars and K-bearing micas can be separated from the additional 40Ar isobaric interference using a combination of SF6 and H2 gases. Finally, Re–Os isotopes can be measured in molybdenite in ore deposits using CH4 as the reaction gas with the addition of He to suppress the Re reaction.Sarah E. Gilbert, Stijn Glorie and Thomas Zac
Installatierede van de Technische Commissie voor de Waterkeringen
No full textRede uitgesproken bij de installatie van de Technische Adviescommissie voor de Waterkeringen door de Minister van Verkeer en Waterstaat, J.G. Suurhoff, en het antwoord van de voorzitter van de TAW op deze rede, prof.ir. P.P. Jansen. De commissie werd ingesteld naar aanleiding van de overstromingen in Tuindorp-Oostzaan in 1960. De commissie is officieel ingesteld op 31 mei 1965, maar de installatierede is in Augustus van dat jaar uitgesprokenTAW/EN
Implicit large-eddy simulation of the stratocumulus-topped boundary layer: A grid sensitivity study
No full textA range of implicit large-eddy simulations of the stratocumulus-topped boundary layer is performed to study the influence of grid resolution on selected parameters including liquid water path and second and third moments of vertical velocity fluctuations. The simulations are based on two sets of aircraft measurements, which are also used to evaluate the results of the simulations. The specific case presented here indicates that simulations with a grid aspect ratio accounting for the anisotropic nature of the turbulence near the surface and at the top of the boundary layer lead to better agreement with measurements than simulations with an isotropic grid
Experimental application of a dynamic observer to capture and predict the dynamics of a flat-plate boundary layer
No full textThe recent approach, proposed by Guzman-Inigo et al. \cite{GuzmanInigo2014}, using System Identification to derive a Reduced Order Model from snapshots of a flow is applied to a transitional boundary layer growing over a flat-plate. It is shown that such an approach can indeed be applied to experimental PIV snapshots. Using a proper learning dataset and a proper local sensor, it is shown that the evolution of boundary layer can be properly estimated from the time evolution of the local probe and with no more than ten POD modes for the Reduced Order Model. The influence of the various parameters on the efficiency of the system identification technique is discussed
Entering GATTACA: Yeast genomes: Analysis, insights and applications
No full textAccepted Author ManuscriptBT/Industriele Microbiologi
Semantic and Stylistic Potential of the Theonyms in the Strutsyuk`s J.G. Works about Kholmshchyna
No full textУ статті розглянуто функціонування теонімів у творах Й. Г. Струцюка про
долю холмщаків, виявлено їхні структурні, функціональні та семантичні особливості. Дослідження показало, що в художній спадщині волинського письменника вжито усталені найменування Бога, які в контексті набувають оригінальних конотацій. This article is dedicated to analysis the theonyms in the work of Volyn writer Strutsyuk J.G. This type of own names is distinguished by particularly expressiveness, as behind their referents appears complexes of philosophical and religious beliefs. In the investigation was examined the structural and semantical particularities of onyma God, and was found nominative, differential, localizing, emotional and allusive functions. The theonyms used in the work of J.G. Strutsyuk disclose the Christian worldview's fundamentals of the author and special by proper understanding of the religious experience of God. The results of the investigation showed that the style of this language units in the texts based on their traditional using in folk speech and confessional style
Hauntings – A nodalist study
No full textSince Deleuze and Guattari first described the concept of the rhizome as a model of cultural transmission in A Thousand Plateaus (1980), a new way of processing information in the Arts and Social Sciences has emerged – ‘Nodalism’. Philip Gochenour has convincingly argued that units of culture can now be thought of as ‘nodes’ existing in a nonhierarchical, web-like network. Information transfer between nodes in the network is horizontal, omni-directional and not necessarily teleological, a way of viewing the world which has been paralleled and actualized in the last twenty years by the emergence, growth and ubiquity of the internet and the World Wide Web.
The author – a developing audiovisual artist – here offers four videomusic pieces and one virtual sound-synthesis tool. At first glance, the pieces may appear to have little in common. However, the commentary will attempt to show that they are subtly linked together, immersed in a cocoon of rhizomatic, pluralistic, thread-like connections.
The strongest ‘thread’ holding them together appears to be the trope of being ‘haunted’ in some way – either by influence, genre, or overarching concept. However, this thesis will attempt to show how a detailed consideration of each piece results in a highly complex final picture in which the pieces can be thought of as individual cultural nodes suspended in a dense rhizomatic mass of lateral cultural threads. For the sake of completion, however, the project has received the name Hauntings in reference to one of the strongest shared tropes running throughout all five works
Origin of Late Permian Emeishan basaltic rocks from the Panxi region (SW China): Implications for the Ti-classification and spatial–compositional distribution of the Emeishan flood basalts
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