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  1. Book ; Online: Methan concentration and delta deuterium of methane from the NGRIP ice core, supplementary data to: Bock, Michael; Schmitt, Jochen; M?ller, Lars; Spahni, Renato; Blunier, Thomas; Fischer, Hubertus (2010): Hydrogen isotopes preclude marine hydrate CH4 emissions at the onset of Dansgaard-Oeschger Events. Science, 328(5986), 1686-1689

    Bock, Michael / Blunier, Thomas / Fischer, Hubertus / M?ller, Lars / Schmitt, Jochen / Spahni, Renato

    2010  

    Abstract: The causes of past changes in the global methane cycle and especially the role of marine methane hydrate (clathrate) destabilization events are a matter of debate. Here we present evidence from the North Greenland Ice Core Project ice core based on the ... ...

    Abstract The causes of past changes in the global methane cycle and especially the role of marine methane hydrate (clathrate) destabilization events are a matter of debate. Here we present evidence from the North Greenland Ice Core Project ice core based on the hydrogen isotopic composition of methane [dD(CH4)] that clathrates did not cause atmospheric methane concentration to rise at the onset of Dansgaard-Oeschger (DO) events 7 and 8. Box modeling supports boreal wetland emissions as the most likely explanation for the interstadial increase. Moreover, our data show that dD(CH4) dropped 500 years before the onset of DO 8, with CH4 concentration rising only slightly. This can be explained by an early climate response of boreal wetlands, which carry the strongly depleted isotopic signature of high-latitude precipitation at that time.
    Language English
    Dates of publication 2010-9999
    Size Online-Ressource
    Publisher PANGAEA - Data Publisher for Earth & Environmental Science
    Publishing place Bremen/Bremerhaven
    Document type Book ; Online
    Note This dataset is supplement to doi:10.1126/science.1187651
    DOI 10.1594/PANGAEA.756715
    Database Library catalogue of the German National Library of Science and Technology (TIB), Hannover

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  2. Book ; Online: Susceptibility, conductivity and porosity along a GEM-SHARK profile, supplementary data to: Rey, Daniel; M?ller, Hendrik; Rubio, Belen; von Dobeneck, Tilo; Vilas, F; Hilgenfeldt, C; Bernabeu, A; Frederichs, Thomas; Fern?ndez, S; Mohamed, KJ; Grupo GEOMA (2008): Using electromagnetic sensors to estimate physical properties and environmental quality of surface sediments in the marine environment. Preliminary results. Geotemas, 10, 652-654

    M?ller, Hendrik / Bernabeu, A / Fern?ndez, S / Frederichs, Thomas / Hilgenfeldt, C / Mohamed, KJ / Rubio, Belen / Vilas, F / von Dobeneck, Tilo / Grupo GEOMA

    2010  

    Abstract: The coastal systems, are often subjected to high anthropogenic pressure, which makes it necessary to develop new techniques to assess the environmental impacts caused by such human activity. This paper presents the first results obtained during the ... ...

    Abstract The coastal systems, are often subjected to high anthropogenic pressure, which makes it necessary to develop new techniques to assess the environmental impacts caused by such human activity. This paper presents the first results obtained during the development and implementation of a new equipment of submarine geophysics survey oriented to integrated coastal zone management (ICZM). It is based on the drag of a submarine in contact with the sea-bottom. The submarine is equipped with an electromagnetic sensor which allows the measurement of the magnetic susceptibility and electrical conductivity of the surface sediments continuously and to a depth of sediment of 40 cm. This system, once improved, will allow us to obtain valuable information for monitoring the environmental quality of coastal areas.
    Language English
    Dates of publication 2010-9999
    Size Online-Ressource
    Publisher PANGAEA - Data Publisher for Earth & Environmental Science
    Publishing place Bremen/Bremerhaven
    Document type Book ; Online
    DOI 10.1594/PANGAEA.742075
    Database Library catalogue of the German National Library of Science and Technology (TIB), Hannover

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  3. Article ; Online: The Oracle of Delphia molecular phylogenetic approach to Greek Cordulegaster Leach in Brewster, 1815 (Odonata: Anisoptera: Cordulegastridae).

    Schneider, Thomas / Vierstraete, Andy / Ikemeyer, Dietmar / VAN Pelt, Gert Jan / Caspers, Max / Mller, Ole / Dumont, Henri J

    Zootaxa

    2022  Volume 5125, Issue 2, Page(s) 182–204

    Abstract: Taxonomy of the genus Cordulegaster Leach in Brewster, 1815 in Greece is not completely understood. The taxonomic status of the subspecies C. helladica buchholzi (Lohmann, 1993), C. helladica kastalia (Lohmann, 1993), and C. heros pelionensis ... ...

    Abstract Taxonomy of the genus Cordulegaster Leach in Brewster, 1815 in Greece is not completely understood. The taxonomic status of the subspecies C. helladica buchholzi (Lohmann, 1993), C. helladica kastalia (Lohmann, 1993), and C. heros pelionensis Theischinger, 1979 was still unclear. We applied a molecular genetic approach using sequences of mitochondrial and nuclear DNA fragmentscytochrome c oxidase I (COI) and Internal Transcribed Spacer 1 (ITS1). This approach revealed that specimens presently assigned to C. heros pelionensis should be considered as conspecific to the nominate subspecific taxon making C. heros a monotypic species. Two major monophyletic lines were found within the Greek representatives of the species grouped around C. bidentata Selys, 1843: the clade of the European endemic C. bidentata and the clade composed of three species: C. helladica (Lohmann, 1993), C. buchholzi (stat. nov., raised to species level), and C. insignis Schneider, 1845. Cordulegaster helladica is restricted to the Peloponnese. Cordulegaster buchholzi is not restricted to the Cyclades as previously thought, but widespread from the Cyclades over the island Euboea to south-east mainland Greece reaching in the west near Mount Parnassos, where it hybridize with C. bidentata. Hybridization between C. bidentata and C. buchholzi was detected at the Castalian Spring, where in ancient times the Oracle of Delphi was located, and some kilometres east of the Castalian Spring. These hybrids had been formerly named C. helladica kastalia. In the case of C. insignis montandoni St. Quentin, 1971 we have investigated specimens some kilometres away from the type locality in Romania, which all revealed hybrids between C. bidentata and C. insignis. However, we do not know if specimens phenotypically looking like C. insignis from further west in the SE Balkans represent isolated population of C. insignis within the range of C. bidentata or belong to a broader hybrid zone between C. bidentata and C. insignis.
    MeSH term(s) Animals ; Dipterocarpaceae ; Greece ; Odonata ; Phylogeny
    Language English
    Publishing date 2022-04-08
    Publishing country New Zealand
    Document type Journal Article
    ISSN 1175-5334
    ISSN (online) 1175-5334
    DOI 10.11646/zootaxa.5125.2.5
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  4. Article ; Online: Barriers to seeking emergency care during the COVID-19 pandemic may lead to higher morbidity and mortality – a retrospective study from a Swiss university hospital

    Hautz, Wolf E. / Sauter, Thomas C. / Exadakytlos, Aristomenis K. / Krummrey, Gert / Schauber, Stefan / Mller, Martin

    Swiss Medical Weekly ; ISSN 1424-3997

    2020  

    Keywords General Medicine ; covid19
    Language English
    Publisher EMH Swiss Medical Publishers, Ltd.
    Publishing country ch
    Document type Article ; Online
    DOI 10.4414/smw.2020.20331
    Database BASE - Bielefeld Academic Search Engine (life sciences selection)

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  5. Article ; Online: The new annotated checklist of the wild bees of Europe (Hymenoptera: Anthophila).

    Ghisbain, Guillaume / Rosa, Paolo / Bogusch, Petr / Flaminio, Simone / Divelec, Romain LE / Dorchin, Achik / Kasparek, Max / Kuhlmann, Michael / Litman, Jesse / Mignot, Maud / Mller, Andreas / Praz, Christophe / Radchenko, Vladimir G / Rasmont, Pierre / Risch, Stephan / Roberts, Stuart P M / Smit, Jan / Wood, Thomas J / Michez, Denis /
    Revert, Sara

    Zootaxa

    2023  Volume 5327, Issue 1, Page(s) 1–147

    Abstract: At a time when nature conservation has become essential to ensure the long-term sustainability of our environment, it is widely acknowledged that conservation actions must be implemented within a solid taxonomic framework. In preparation for the upcoming ...

    Abstract At a time when nature conservation has become essential to ensure the long-term sustainability of our environment, it is widely acknowledged that conservation actions must be implemented within a solid taxonomic framework. In preparation for the upcoming update of the IUCN Red List, we here update the European checklist of the wild bees (sensu the IUCN geographical framework). The original checklist, published in 2014, was revised for the first time in 2017. In the present revision, we add one genus, four subgenera and 67 species recently described, 40 species newly recorded since the latest revision (including two species that are not native to Europe), 26 species overlooked in the previous European checklists and 63 published synonymies. We provide original records for eight species previously unknown to the continent and, as original taxonomic acts, we provide three new synonyms, we consider two names as nomina nuda, ten names as nomina dubia, three as species inquirenda, synonymize three species and exclude 40 species from the previous checklist. Around a hundred other taxonomic changes and clarifications are also included and discussed. The present work revises the total number of genera for IUCN Europe to 77 and the total number of species to 2,138. In addition to specifying the taxonomic changes necessary to update the forthcoming Red List of European bees, we discuss the sampling and taxonomic biases that characterise research on the European bee fauna and highlight the growing importance of range expansions and species invasions.
    MeSH term(s) Bees ; Animals ; Hymenoptera ; Europe ; Ctenophora
    Language English
    Publishing date 2023-08-11
    Publishing country New Zealand
    Document type Journal Article
    ISSN 1175-5334
    ISSN (online) 1175-5334
    DOI 10.11646/zootaxa.5327.1.1
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  6. Article ; Online: Silent Cerebral Events after Atrial Fibrillation Ablation � Overview and Current Data

    Thomas Deneke / Karin Nentwich / Joachim Krug / Patrick M�ller / Peter Hubert Grewe / Andreas M�gge / Anja Schade

    Journal of Atrial Fibrillation, Vol 6, Iss 5, Pp 64-

    2014  Volume 69

    Abstract: Silent cerebral lesions (SCL) have been identified on brain magnetic resonance imaging (MRI) in apparently asymptomatic patients after cardiovascular procedures. After atrial fibrillation (AF) ablation incidences range from 1 to over 40% depending upon ... ...

    Abstract Silent cerebral lesions (SCL) have been identified on brain magnetic resonance imaging (MRI) in apparently asymptomatic patients after cardiovascular procedures. After atrial fibrillation (AF) ablation incidences range from 1 to over 40% depending upon different factors. MRI definition should include diffusion weighted imaging (DWI) to detect hyperintensities (bright spots) due to acute brain ischemia correlated with a hypointensity in the apparent diffusion coefficient mapping (ADC-map) to rule out artifacts. The genesis of SCL appears to be multifactorial and appears to be a result of embolic events either from gaseous or solid particles. The MRI pattern appears to be comparable not hinting towards a specific mechanism. One may distinguish two different MRI patterns, for one silent cerebral ischemic events not proven to be related to cell death (DWI positive but FLAIR negative) and MRI findings that are due to edema caused by cell death which will lead to glial cell scar formation (DWI positive and FLAIR positive). For ease of data interpretation, future studies should ensure that DWI and FLAIR data is acquired using identical slice thickness and orientation. Risk factors associated with increased SCL-incidences involve patient-specific, technology-associated and procedural determinants. When using a high-sensitive MRI definition differences in ischemic brain event-rates in between technologies appear to be less prominent. Further studies on the effects of different periprocedural anticoagulation regimen, different steps of the ablation procedure and new technologies are needed. For now, SCL incidence may determine the thrombogenic potential of an ablation technology and further studies to reduce or avoid SCL generation are desirable. It appears reasonable, that any cerebral ischemic event should be avoided.
    Keywords Internal medicine ; RC31-1245 ; Medicine ; R
    Subject code 610
    Language English
    Publishing date 2014-02-01T00:00:00Z
    Publisher CardioFront
    Document type Article ; Online
    Database BASE - Bielefeld Academic Search Engine (life sciences selection)

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  7. Book ; Online: Carbon 14 age dating of wood samples from the Alps, supplementary data to: Hormes, Anne; M?ller, Benjamin U; Schluechter, Christian (2001): The Alps with little ice: evidence for eight Holocene phases of reduced glacier extent in the Central Swiss Alps. The Holocene, 11(3), 255-265

    Hormes, Anne / M?ller, Benjamin U / Schl?chter, Christian

    2001  

    Abstract: ... pp
    Hormes, Anne; Schluechter, Christian; Stocker, Thomas F (1998): Minimal extension phases ...

    Abstract Glacially deformed pieces of wood, organic lake sediments and clasts of reworked peat have been collected in front of Alpine glaciers since AD 1990. The palaeoglaciological interpretation of these organic materials is related to earlier phases of glacier recession surpassing that of today's shrunken glaciers and to tree growth and peat accumulation in the valleys now occupied by the glaciers. Glacial transport of the material is indicated by wood anatomy, incorporated silt, sand and gravel particles, missing bark and deformed treerings. A total of 65 samples have been radiocarbon dated so far, and clusters of dates provide evidence of eight phases of glacier recession: 9910-9550, 9010-7980, 7250-6500, 6170-5950, 5290-3870, 3640-3360, 2740-2620 and 1530-1170 calibrated years BP. Allowing for the timelag between climatic fluctuations, glacier response and vegetation colonization, these recession phases may lag behind climatic changes by 100-200 years.

    REFERENCE:
    Hormes, Anne (2001): The 14C perspective of glacier recessions in the Swiss Alps and New Zealand. PhD Thesis, University Bern. Der Andere Verlag, Osnabr?ck, 176 pp
    Hormes, Anne; Schluechter, Christian; Stocker, Thomas F (1998): Minimal extension phases of Unteraarglacier (Swiss Alps) during the Holocene based on 14C analysis of wood. In: Mook, W G & van der Plicht, J (eds.), Radiocarbon, Proceedings of the 16th International 14C Conference, 809-817
    Language English
    Dates of publication 2001-9999
    Size Online-Ressource
    Publisher PANGAEA - Data Publisher for Earth & Environmental Science
    Publishing place Bremen/Bremerhaven
    Document type Book ; Online
    Note This dataset is supplement to doi:10.1191/095968301675275728
    DOI 10.1594/PANGAEA.133666
    Database Library catalogue of the German National Library of Science and Technology (TIB), Hannover

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  8. Article: Automated Georeferencing of Optical Satellite Data with Integrated Sensor Model Improvement

    Mller, Rupert / Thomas KrauauthorGerman Aerospace Center (DLR), Remote Sensing Technology Institute, Mnchner Strae 20, 82234 Weling, Germany / Mathias SchneiderauthorGerman Aerospace Center (DLR), Remote Sensing Technology Institute, Mnchner Strae 20, 82234 Weling, Germany / Peter ReinartzauthorGerman Aerospace Center (DLR), Remote Sensing Technology Institute, Mnchner Strae 20, 82234 Weling, Germany
    Language English
    Document type Article
    Database AGRIS - International Information System for the Agricultural Sciences and Technology

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  9. Article: PAH toxicity at aqueous solubility in the fish embryo test with Danio rerio using passive dosing

    Seiler, Thomas-Benjamin / Nina BestauthorDepartment of Ecosystem Analysis, Institute for Environmental Research (Biology V), RWTH Aachen University, Worringerweg 1, D-52074 Aachen, Germany / Margit Mller FernqvistauthorDepartment of Environmental Science, Aarhus University, Frederiksborgvej 399, PO Box 358, 4000 Roskilde, Denmark / Hendrik HerchtauthorDepartment of Ecosystem Analysis, Institute for Environmental Research (Biology V), RWTH Aachen University, Worringerweg 1, D-52074 Aachen, Germany / Kilian E.C. SmithauthorEnergy and Environment Centre, Korean Institute of Science and Technology Europe Forschungsgesellschaft mbH, University of Saarland, 66123 Saarbrcken, Germany / Thomas BraunbeckauthorAquatic Ecology and Toxicology Group, Department of Zoology, University of Heidelberg, Im Neuenheimer Feld 230, D-69120 Heidelberg, Germany / Philipp MayerauthorDepartment of Environmental Engineering, Technical University of Denmark, Building 115, DK 2800 Kgs. Lyngby, Denmark / Henner HollertauthorDepartment of Ecosystem Analysis, Institute for Environmental Research (Biology V), RWTH Aachen University, Worringerweg 1, D-52074 Aachen, Germany
    Language English
    Document type Article
    Database AGRIS - International Information System for the Agricultural Sciences and Technology

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