Geologie: Recent submissions
Anzeige der Dokumente 476-500 von 933
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Quantitative assessments of water-use efficiency in Temperate Eurasian Steppe along an aridity gradient.
(PloS one, 2017)Water-use efficiency (WUE), defined as the ratio of net primary productivity (NPP) to evapotranspiration (ET), is an important indicator to represent the trade-off pattern between vegetation productivity and water consumption. ... -
Rhizosphere hydrophobicity: A positive trait in the competition for water.
(PloS one, 2017)The ability to acquire water from the soil is a major driver in interspecific plant competition and it depends on several root functional traits. One of these traits is the excretion of gel-like compounds (mucilage) that ... -
Tracing the oxygen isotope composition of the upper Earth's atmosphere using cosmic spherules
(Nature communications, 2017-06-01)Molten I-type cosmic spherules formed by heating, oxidation and melting of extraterrestrial Fe,Ni metal alloys. The entire oxygen in these spherules sources from the atmosphere. Therefore, I-type cosmic spherules are ... -
Technical Note: In-situ derivatization thermal desorption GC-TOFMS for direct analysis of particle-bound non-polar and polar organic species
(Atmospheric Chemistry and Physics, 2011)An in-situ derivatization thermal desorption method followed by gas chromatography and time-of-flight mass spectrometry (IDTD-GC-TOFMS) was developed for determination of polar organic compounds together with non-polar ... -
Characterizing the reactivity of metallic iron in Fe0/EDTA/H2O systems with column experiments
(Chemical Engineering Journal, 2010)Characterizing the intrinsic reactivity of iron materials for environmental remediation has received relative little interest. Available results are mostly based on the removal extent of selected contaminants in batch ... -
Multi-accretional tectonics at the Rio de la Plata Craton margins: preface
(International Journal of Earth Sciences, 2010) -
Mitigating Uranium in Ground Water: Prospects and Limitations
(Environmental Science & Technology, 2003)Removal of uranium(VI) by zero-valent iron (ZVI) has been suggested as a feasible pathway to control uranium contaminations in seepage waters. Available information in literature however presents discrepant evidence on ... -
Monument futures: climate change, air pollution, decay and conservation—the Wolf-Dieter Grimm-volume
(Environmental GeologyEnvironmental Geology, 2008) -
Characeae-derived carbonate deposits in Lake Ganau, Kurdistan Region, Iraq
(Facies, 2012)Characeae, a family of calcifying green algae, are common in carbonate-rich freshwaters. The southwestern shoreline of Lake Ganau (Kurdistan Region, northeastern Iraq) harbors dense and thick mats of these algae (genus ... -
Major shear zones of southern Brazil and Uruguay: escape tectonics in the eastern border of Rio de La plata and Paranapanema cratons during the Western Gondwana amalgamation
(International Journal of Earth Sciences, 2010)The Mantiqueira Province represents a series of supracrustal segments of the South-American counterpart formed during the Gondwana Supercontinent agglutination. In this crustal domain, the process of escape tectonics played ... -
Extending Service Life of Household Water Filters by Mixing Metallic Iron with Sand
(CLEAN - Soil, Air, Water, 2010) -
Black dimensional stones: geology, technical properties and deposit characterization of the dolerites from Uruguay
(Environmental Earth Sciences, 2010)Dimensional stones with a black color occupy a prominent place on the international market. Uruguayan dolerite dikes of andesitic and andesitic–basaltic composition are mined for commercial blocks of black dimensional ... -
Horizontal transfer of transposons between and within crustaceans and insects
(Mobile DNA, 2014) -
Direct observation of microcrack development in marble caused by thermal weathering
(Environmental Earth Sciences, 2010)One of the properties that makes marble such an excellent construction and ornamental material is its low porosity. It is very difficult for water or decay agents to penetrate the internal structure of materials with no ... -
Quellen und Vorkommen kurzkettiger Alkylphenole (SCAP)
(Grundwasser, 2013)Aus der Literaturrecherche und eigenen Untersuchungen geht hervor, dass kurzkettige Alkylphenole (SCAP) während der Verarbeitungs- bzw. Veredelungsprozesse fester fossiler Brennstoffe ebenso in die Umwelt freigesetzt werden ... -
Mechanism of Uranium Removal from the Aqueous Solution by Elemental Iron
(Journal of Hazardous Materials, 2006)The effectiveness of elemental iron (Fe0) to remove uranium (U) from the aqueous phase has been demonstrated. While the mitigation effect is sure, discrepancies in the removal mechanism have been reported. The objective ... -
Feathery and network-like filamentous textures as indicators for the re-crystallization of quartz from a metastable silica precursor at the Rusey Fault Zone, Cornwall, UK
(Solid Earth, 2016)Hydrothermal quartz crystals, which occur in the Rusey Fault Zone (Cornwall, UK), show feathery textures and network-like filamentous textures. Optical hotcathodoluminescence (CL) analysis and laser ablation ... -
The evolution of metazoan α-carbonic anhydrases and their roles in calcium carbonate biomineralization
(Frontiers in Zoology, 2014)The carbonic anhydrase (CA; EC 4.2.1.1) superfamily is a class of ubiquitous metallo-enzymes that catalyse the reversible hydration of carbon dioxide. The α-CA family, present in all metazoan clades, is a key enzyme ... -
Enhancing sustainability of household water filters by mixing metallic iron with porous materials
(Chemical Engineering Journal, 2010)This study conceptually discusses the feasibility of enhancing the sustainability of conventional iron/sand filter (Fe0/sand filter) for safe drinking water by partially or totally substituting sand (quartz) by porous ... -
Improving the sustainability of granular iron/pumice systems for water treatment.
(Journal of environmental management, 2013-05-30)Metallic iron (Fe(0)) is currently used in subsurface and above-ground water filtration systems on a pragmatic basis. Recent theoretical studies have indicated that, to be sustainable, such systems should not contain more ... -
Upper Cretaceous Gosau deposits of the Apuseni Mountains (Romania) - similarities and differences to the Eastern Alps
(Austrian Journal of Earth Sciences [untranslated], 2009)The Apuseni Mountains were formed during Late Cretaceous convergence between the Tisia and the Dacia microplates as part of the Alpine orogen. The mountain range comprises a sedimentary succession similar to the Gosau ... -
Aerobic methanotrophy within the pelagic redox-zone of the Gotland Deep (central Baltic Sea)
(Biogeosciences, 2012-12-05)Water column samples taken in summer 2008 from the stratified Gotland Deep (central Baltic Sea) showed a strong gradient in dissolved methane concentrations from high values in the saline deep water (max. 504 nM) to ... -
Ecological and biogeochemical change in an early Paleogene peat-forming environment: Linking biomarkers and palynology
(Palaeogeography, Palaeoclimatology, Palaeoecology, 2015)Sphagnum moss is the dominant plant type inmodern boreal and (sub)arctic ombrotrophic bogs and is of particular interest due to its sensitivity to climate and its important role in wetland biogeochemistry. Here we reconstruct ... -
Investigating the Mechanism of Uranium Removal by Zerovalent Iron
(Environmental Chemistry, 2005)Zerovalent iron (ZVI) has been proposed as a reactive material in permeable in-situ walls for groundwater contaminated by metal pollutants. For such pollutants which interact with corrosion products, the determination ... -
Metallic iron: dawn of a new era of drinking water treatment research?
(Fresenius Environmental Bulletin, 2010)