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Anzeige der Dokumente 6190-6209 von 6924
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Toxicity of aliphatic amines on the embryos of zebrafish Danio rerio - experimental studies and QSAR
(Univ. Dresden, 2001)The toxicity of 36 aliphatic amines on the embryos of the zebrafish Danio rerio were investigated. The DarT (Danio rerio Toxicity assay) was used to determine the lethal concentrations within a 48 h static acute toxicity ... -
Trace - tree rings in archaeology, climatology and ecology - proceedings of the Dendrosymposium 2007, May 3rd - 6th 2007, Riga, Latvia
(Scientific Technical Report / Deutsches Geoforschungszentrum Potsdam GFZ; 2008, 05) -
Trace Element Biogeochemistry in the High‐Latitude North Atlantic Ocean: Seasonal Variations and Volcanic Inputs
; Steigenberger, Sebastian; ; ; ; ; ; ; ; ; Moore, C. Mark (Global Biogeochemical Cycles, 2021-03-15)
We present dissolved and total dissolvable trace elements for spring and summer cruises in 2010 in the high‐latitude North Atlantic. Surface and full depth data are provided for Al, Cd, Co, Cu, Mn, Ni, Pb, and Zn in the ... -
Trace element fractionation between biotite, allanite, and granitic melt
(Contributions to Mineralogy and Petrology, 2021-09-02)The partitioning of a large suite of trace elements between biotite and water-saturated granitic melt was measured at 2 kbar and 700—800 ˚C. To reach equilibrium and to grow biotite crystals large enough for analysis, runs ... -
Trace elements and cathodoluminescence of quartz in stockwork veins of Mongolian porphyry-style deposits
(Mineralium Deposita, 2010)The combination of scanning electron microscope–cathodoluminescence (CL), fluid inclusion analysis and high-resolution electron probe microanalysis of Al, Ti, K and Fe in vein quartz has yielded results permitting a greater ... -
Trace metals contamination in groundwater and implications on human health: comprehensive assessment using hydrogeochemical and geostatistical methods
; ; ; ; (Environmental Geochemistry and Health, 2020-06-29)
Monitoring the groundwater chemical composition and identifying the presence of pollutants is an integral part of any comprehensive groundwater management strategy. The present study was conducted in a part of West Tripura, ... -
Trace-element behaviour in sediments of Ugandan part of Lake Victoria: results from sequential extraction and chemometrical evaluation
; ; ; ; (Environmental Earth Sciences, 2021-04-12)
Lake Victoria is the second largest freshwater lake and the largest tropical lake in the world. The transboundary lake has the fastest growing population in its catchment, which can impact the water and sediment quality. ... -
Traces of the bone-eating annelid Osedax in Oligocene whale teeth and fish bones
(Paläontologische Zeitschrift, 2012)The range of substrates that the bone-eating marine worm Osedax is able to consume has important implications for its evolutionary history, especially its potential link to the rise of whales. Once considered a whale ... -
Trachyte weathering in the urban built environment related to air quality
(Heritage Science, 2017)Decay of trachyte used as building stone in urban environment was investigated through the analysis of crusts and patinas found on trachyte of the Euganean Hills in the Renaissance city walls of Padua, northeastern Italy. ... -
Tracing southern Gondwanan sedimentary paths: A case study of northern Namibian late Palaeozoic sedimentary rocks
; ; ; ; ; (Sedimentology, 2022-02-15)
The northern Namibian Karoo‐aged successions are part of a Gondwana‐wide sedimentary system emerging at the Carboniferous–Permian boundary and existing for more than 50 Ma. The Karoo Supergroup sedimentary successions are ... -
Tracing the oxygen isotope composition of the upper Earth's atmosphere using cosmic spherules
; Höweling, Andres; ; Stefanak, Maren T.; Beck, Anne-Katrin; Peters, Stefan T. M.; Sengupta, Sukanya; Herwartz, Daniel; Folco, Luigi (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 ... -
Tracking Downstream Variability in Large Grain‐Size Distributions in the South‐Central Andes
; (Journal of Geophysical Research: Earth Surface, 2021-08-26)
Mixed sand‐ and gravel‐bed rivers record erosion, transport, and fining signals in their bedload size distributions. Thus, grain‐size data are imperative for studying these processes. However, collecting hundreds to thousands ... -
Trade‐Offs for Climate‐Smart Forestry in Europe Under Uncertain Future Climate
; ; ; ; ; ; ; ; (Earth's Future, 2022-09-09)
Forests mitigate climate change by storing carbon and reducing emissions via substitution effects of wood products. Additionally, they provide many other important ecosystem services (ESs), but are vulnerable to climate ... -
Transboundary Rainfall Estimation Using Commercial Microwave Links
; ; ; ; (Earth and Space Science, 2023-08-17)
Abstract Unlike actual rainfall, the spatial extent of rainfall maps is often determined by ...
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Transformation in Central European postsocialist cities
(Discussion Papers / Centre for Regional Studies of Hungarian Academy of Science; 21) -
Transformation of dissolved organic matter by two Indo‐Pacific sponges
; ; ; ; ; (Limnology and Oceanography, 2022-09-12)
Dissolved organic matter (DOM) is the largest organic carbon reservoir in the ocean and an integral component of biogeochemical cycles. The role of free‐living microbes in DOM transformation has been studied thoroughly, ... -
Transformation of Generation Processes From Small Runoff Events to Large Floods
; ; (Geophysical Research Letters, 2020-11-23)
Mixture of runoff generation processes poses a challenge for predicting upper flood quantiles. We examined transformations of generation processes from all identifiable runoff events to frequent and upper tail floods for ... -
Transgression und Umlagerung im Gebiet des Helgoland-Riffs
(E&G – Quaternary Science Journal; Vol.30, No. 1)Im Gebiet des Helgoland-Riffs (pleistozänes Reliktmaterial) wurden Längs- und Querprofile mit Sedimentechograph und Side-Scan gefahren. Die Profile wurden abgegriffen, abgebohrt und abgedredgt. Einer meist nur geringmächtigen ...
