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Anzeige der Dokumente 4626-4645 von 6897
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On the influence of local inhomogeneities on cosmological observables - from galaxies to the microwave background
(Univ. Bielefeld, 2007)Despite the good consistency of the cosmological standard model with the bulk of present observations, a number of unanticipated features have recently been detected within large-angle data of the Cosmic Microwave Background. ... -
On the Limitations and Implications of Modeling Heat Transport in Porous Aquifers by Assuming Local Thermal Equilibrium
(Water Resources Research, 2020)Heat transport in natural porous media, such as aquifers or streambeds, is generally modeled assuming local thermal equilibrium (LTE) between the fluid and solid phases. Yet, the mathematical and hydrogeological conditions ... -
On the mechanism of microbe inactivation by metallic iron
(Journal of Hazardous Materials, 2011)This letter challenges the concept that the metallic iron (Fe0) surface contributes directly to the process of micro-organism inactivation in aqueous solutions. It is shown that any antimicrobial properties of Fe0 is related ... -
On the Operating Mode of Bimetallic Systems for Environmental Remediation
(Journal of hazardous materials, 2008) -
On the operating mode of bimetallic systems for environmental remediation
(Journal of Hazardous materials, 2008)This letter challenges the concept that Fe0/Me0 bimetallic systems enhance contaminant reduction on Me0 surfaces. It is shown on a pure thermodynamic perspective that any enhancement of contaminant reduction by Fe0 in the ... -
On the possibility of getting traceable time and frequency measurements via GNSS receivers
(GPS Solutions, 2020-09-02)The realization of Coordinated Universal Time, one of the tasks of the International Bureau of Weights and Measures, relies on a network of international time links which currently is organized in a star-like scheme that ... -
On the present habitats and ecology of Vertigo pseudosubstriata Ložek, 1954 (Mollusca, Gastropoda, Vertiginidea) in Central Asia and its distribution history in Central and Eastern Europe
(Journal of Quaternary Science, 2021-06-07)The small terrestrial gastropod Vertigo pseudosubstriata Ložek, 1954 is one of the rarest glacial indicator species in the Pleistocene of Central and Eastern Europe. In all, this species has been found at only about 15 ... -
On the Propagation of Reaction Fronts in a Sandy Aquifer Over 20+ Years: Lessons From a Test Site in Northwestern Germany
(Water Resources Research, 2021-08-09)Despite reduction measures, nitrate and aluminum concentrations remain high in aquifers in northwestern Europe. To evaluate the effectiveness of groundwater protection policies, the long‐term fate of these contaminants in ... -
On the Relation between Subglacial Tills and the Substratum in Western Allgäu (Germany)
(E&G – Quaternary Science Journal; Vol.43, No. 1)Korngrößen-, Kies- und Schwermineralanalysen würmzeitlicher Grundmoränen-Ablagerungen des Rheingletschers im baden-württembergischen Alpenvorland zeigen einen meist relativ niedrigen Einfluß des aus Molasse bestehenden ... -
On the relation of stress and deformation fields to natural and induced seismicity
(GFZ, Helmholtz-Zentrum[Bibliothek des Wissenschaftsparks Albert Einstein] [Vertrieb], [Potsdam], 2006) -
On the relevance of adhesion - applications to Saturn's rings
(Univ. Potsdam, 2006)Seit ihrer Entdeckung im Jahre 1610 durch Galileo Galilei faszinieren die Ringe des Saturn sowohl Laien als auch Experten. Planetare Ringe finden sich in der Äquatorialebene aller vier Riesenplaneten unseres Sonnensystems ... -
On the representation of atmospheric circulation modes in regional climate models over Western Europe
(International Journal of Climatology, 2022-07-27)Atmospheric circulation is a key driver of climate variability, and the representation of atmospheric circulation modes in regional climate models (RCMs) can enhance the credibility of regional climate projections. This ... -
On the Resolution of Triangular Meshes
(Journal of Advances in Modeling Earth Systems, 2022-10-08)It is generally agreed that the resolution of a regular quadrilateral mesh is the side length of quadrilateral cells. There is less agreement on the resolution of triangular meshes, exacerbated by the fact that the numbers ... -
On the Ridging of the South Atlantic Anticyclone Over South Africa: The Impact of Rossby Wave Breaking and of Climate Change
(Geophysical Research Letters, 2022-10-19)Ridging South Atlantic Anticyclones contribute an important amount of precipitation over South Africa. Here, we use a global coupled climate model and the ERA5 reanalysis to separate for the first time ridging highs (RHs) ... -
On the Role of Rheological Memory for Convection‐Driven Plate Reorganizations
(Geophysical Research Letters, 2022-09-21)Understanding the temporal variability of plate tectonics is key to unraveling how mantle convection transports heat, and one critical factor for the formation and evolution of plate boundaries is rheological “memory,” ... -
On the Sensitivity of the Devonian Climate to Continental Configuration, Vegetation Cover, Orbital Configuration, CO 2 Concentration, and Insolation
(Paleoceanography and Paleoclimatology, 2019)During the Devonian (419 to 359 million years ago), life on Earth witnessed decisive evolutionary breakthroughs, most prominently the colonization of land by vascular plants and vertebrates. However, it was also a period ... -
On the suitability of admixing sand to metallic iron for water treatment
(International Journal of Environmental Pollution and Solutions, 2013)This communication clarifies the relationships between sand addition and the sustainability of iron/water systems for environmental remediation. It is shown that any enhanced contaminant removal in an iron/sand/water ... -
On the temperature dependence of H-U iso in the riding hydrogen model
(Acta Crystallographica Section A Foundations and Advances, 2014)The temperature dependence of H-Uiso in N-acetyl-l-4-hydroxyproline monohydrate is investigated. Imposing a constant temperature-independent multiplier of 1.2 or 1.5 for the riding hydrogen model is found to be inaccurate, ... -
On the Temperature Dependence of the Cloud Ice Particle Effective Radius—A Satellite Perspective
(Geophysical Research Letters, 2023-03-21)Cloud ice particle effective radius in atmospheric models is usually parametrized. A widely‐used parametrization comprises a strong dependence on the temperature. Utilizing available satellite‐based estimates of both cloud ...