8,453 research outputs found
ICP 2004 Lohmann
No full textHere is the talk of the
8th International Conference on Paleoceanography (ICP), 5-10 September 2004, Biarritz, France.
Papers:
Lohmann, G., and Lorenz, S., 2000: On the hydrological cycle under paleoclimatic conditionsas derived from AGCM simulations. Journal of Geophysical Research, 105, no. D13, 17,417-436. https://agupubs.onlinelibrary.wiley.com/doi/10.1029/2000JD900189
Lohmann, G., and Schulz, M., 2000: Reconciling Bølling warmth with peak deglacial meltwater discharge. Paleoceanography, 15 (5), 537-540.
Stute, M., Clement, A., Lohmann, G., 2001: Global climate models: Past, present, and future. Proc. Natl. Acad. Sci. USA, Vol. 98, Issue 19, 10529-10530.
Prange, M., V. Romanova, and G. Lohmann, 2002: The glacial thermohaline circulation: stable or unstable? Geophysical Research Letters Vol. 29, No. 21, 2028, doi:10.1029/2002GL015337.
Rodgers, K., Lohmann, G., Lorenz, S., Schneider, R., and Henderson, G., 2003: A Tropical Mechanism for Northern Hemisphere Deglaciation. Geochem., Geophys., Geosyst., 4(5), 1046, doi:10.1029/2003GC0000508. https://agupubs.onlinelibrary.wiley.com/doi/full/10.1029/2003GC000508
Knorr, G., and G. Lohmann, 2003: Southern Ocean Origin for Resumption of Atlantic Thermohaline Circulation during Deglaciation. Nature, 424, 532-536. doi:10.1038/nature01855
Prange, M. , Lohmann, G., and A. Paul, 2003: Influence of vertical mixing on the thermohaline hysteresis: Analyses of an OGCM. J. Phys. Oceanogr., 33 (8), 1707-1721.
Lohmann, G., 2003: Atmospheric and oceanic freshwater transport during weak Atlantic overturning circulation. Tellus 55 A, 438-449.
Rühlemann, C., Mulitza, S., Lohmann, G., Paul, A., Prange, M., and G. Wefer, 2004: Intermediate depth warming in the tropical Atlantic related to weakened thermohaline circulation: Combining paleoclimate and modeling data for the last deglaciation. Paleoceanography, 19 (1), PA1025, doi:10.1029/2003PA000948.
Prange, M., G. Lohmann, V. Romanova, and M. Butzin, 2004: Modelling tempo-spatial signatures of Heinrich Events: Influence of the climatic background state. Quat. Sci. Rev., 23/5-6, 521-527.
Romanova, V., M. Prange, and G. Lohmann, 2004: Stability of the glacial thermohaline circulation and its dependence on the background hydrological cycle. Climate Dynamics, 22, 527-538. doi:10.1007/s00382-004-0395-z
Knorr, G., and G. Lohmann, 2007: Transitions in the Atlantic thermohaline circulation by global deglacial warming and melt-water pulses. Geochem. Geophys. Geosyst., Volume 8, Issue 12, doi:10.1029/2007GC001604
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Systematics of Tanaecium Sw. emend L.G. Lohmann (Bignonieae, Bignoniaceae)
No full textTanaecium Sw. emend L.G. Lohmann é um gênero monofilético de lianas neotropicais pertencente à tribo Bignonieae (Bignoniaceae). O gênero é caracterizado por uma mistura de gemas axilares com profilos em formato tanto subulados quanto em rosetas (bromeliad-like), sendo uma sinapomorfia morfológica putativa. Na sinopse mais recente de Tanaecium, 17 espécies foram reconhecidas; trabalhos subsequentes incluíram quatro novas espécies ao gênero, elevando para 21 espécies em Tanaecium. Apesar de alguns estudos filogenéticos terem amostrado representantes de Tanaecium no passado, estes estudos não focaram em reconstruir a filogenia de Tanaecium e, com isso, as relações taxonômicas e filogenéticas entre suas espécies persistem incertas. Os componentes taxonômicos desta tese resultaram em: (i) descrição de uma nova espécie (Tanaecium decorticans Frazão & L.G. Lohmann), (ii) combinação de uma espécie em Fridericia (i.e., Fridericia mutabilis (Bureau & K. Schum.) Frazão & L.G. Lohmann, (iii) elucidação da tipificação do gênero, e (iv) sinopse revisada que trata todas as 21 espécies reconhecidas para Tanaecium. O componente filogenético desta tese combinou bancos de dados de Sanger e sequenciamento em larga escala (HTS) para reconstruir a filogenia mais abrangente do gênero até o presente. Essa filogenia foi baseada em sequências de 28 plastomas (16 Tanaecium e 12 grupos-externo) e 176 sequências geradas com Sanger para três marcadores moleculares (i.e., ndhF, rpl32-trnL e pepC), representando 92 indivíduos e 17 espécies de Tanaecium. Os 16 plastomas de Tanaecium montados neste estudo revelaram cinco diferentes padrões de organização de regiões de cópia única maior (LSC), cópias invertidas e repetidas (IR) e cópia única menor (SSC). Adicionalmente, quarto principais mudanças nos limites das IRs foram encontradas, com contrações das IRs associadas à expansões das SSC e LSC. As topologias reconstruídas usando os três bancos de dados montados neste estudo (i.e., Sanger, plastomas e Sanger e plastomas combinados) reconstruíram quatro grandes clados no core Tanaecium. A topologia reconstruída a partir das análises de dados combinados de plastoma e Sanger recuperou a filogenia melhor resolvida e suportada de Tanaecium até o momento. Esta tese destaca a importância de estudos aprofundados de linhagens individuais, incluindo estudos detalhados em taxonomia, distribuição e relações evolutivas, para o entendimento da compisição de biotas de regiões megadiversas tais como o NeotrópicoTanaecium Sw. emend L.G. Lohmann is a monophyletic genus of Neotropical lianas within the tribe Bignonieae (Bignoniaceae). The genus is characterized by mixed subulate and bromeliad-like prophylls of the axillary buds, putative morphological synapomorphy. In the most recent synopsis of Tanaecium, 17 species were recognized; subsequent works included four new species into the genus leading to 21 species in Tanaecium. Even though some phylogenetic studies sampled representatives of Tanaecium in the past, these studies were not focused on reconstructing the phylogeny of Tanaecium as whole and phylogenetic relationships among its species remain unclear. In this thesis I undertook taxonomic and phylogenetic studies to better understand the systematics and evolution of Tanaecium. The taxonomic component of this thesis resulted in: (i) the description of one new species (Tanaecium decorticans Frazão & L.G. Lohmann), (ii) the combination of one species in Fridericia (i.e., Fridericia mutabilis (Bureau & K. Schum.) Frazão & L.G. Lohmann, (iii) the elucidation of the genus typification, and (iv) a revised synopsis that treated all 21 species for Tanaecium recognized. The phylogenetic component of this thesis combined Sanger and High-Throughput Sequencing (HTS) datasets to reconstruct the most comprehensive phylogeny of the genus to date. This phylogeny was based on sequences of 28 plastomes (16 Tanaecium and 12 outgroups), and 176 sequences generated with Sanger for three molecular markers (i.e., ndhF, rpl32-trnL, and pepC) representing 92 individuals and 17 species of Tanaecium. The 16 plastomes of Tanaecium assembled in this study revealed five different patterns of organization of the Large Single Copy (LSC), Inverted Repeat (IR), and Small Single Copy (SSC) regions. Additionally, four main IR boundary shifts were found, with contractions of the IRs associated to expansions of the SSC and LSC. The topologies reconstructed using the three datasets assembled in this study (i.e., Sanger, plastome, and combined plastome and Sanger) reconstructed four major clades within the core Tanaecium. The topology reconstructed through the analysis of the combined plastome and Sanger dataset provides the most resolved and supported phylogeny of Tanaecium to date. This thesis highlights the importance of in depth studies of individual lineages, including detailed studies of the taxonomy, distribution, and evolutionary relationships, for the understanding of the assembly of the biotas of megadiverse regions such as the Neotropic
Egg-Laying Characteristics of Hens Belonging to "Lohmann Brown-Classic" and "Lohmann Sandy" Crosses
No full textThe article presents changes in egg laying characteristics of hens belonging to "Lohmann brown-classic" and "Lohmann sandy" crosses and draws conclusions
Die subjektive und die objektive Seite der Allgemeinbildung
No full textKoch-Priewe B. Die subjektive und die objektive Seite der Allgemeinbildung. In: Lohmann K, ed. Der Beitrag der Unterrichtsfächer zur Allgemeinbildung. Mitteilungen des Bundesarbeitskreises der Seminar- und Fachleiter e.V. (BAK). Rinteln; 1991: 102-116
Review: Hybrid Warriors: Proxies, Freelancers and Moscow’s Struggle for Ukraine
No full textAuthor: Anna Arutunyan
Reviewed by Dr. Sarah Lohmann, teaching faculty, University of Washington
Dr. Sarah Lohmann, editor of What Ukraine Taught NATO about Hybrid Warfare (US Army War College Press, 2022), calls Anna Arutunyan\u27s latest book, Hybrid Warriors, a must-read for senior members of the US defense community that encourages strategists to think beyond segmented operations to ensure Russia\u27s broad defeat. Lohmann highlights the book\u27s value in that it provides perspectives that have not yet been heard in the West, as Arutunyan relies on Russian sources from media and academia, as well as hundreds of interviews. Lohmann also notes how Arutunyan challenges what she believes to be the Western narrative around the 2022 Russia-Ukraine War.https://press.armywarcollege.edu/parameters_bookshelf/1042/thumbnail.jp
Synthesis of novel chiral thiophene-, benzothiophene- and benzofuran-oxazoline ligands and their use in the enantioselective Pd-catalyzed allylation
No full textNovel thiophene, benzothiophene and benzofuran-oxazoline ligands 6-11 containing a diphenylphosphino group at different positions of the heterocyclic skeleton have been prepared and used in the enantioselective allylation. The advantage of these new ligands is their easy accessibility and their high reactivity. The best results were obtained with ligand 9 to give the product 13 in 97.0% ee with 92% yield in 2 hours at 0 degreesC
Enhanced 20th-century heat transfer to the Arctic simulated in the context of climate variations over the last millennium
No full textOceanic heat transport variations, carried by the northward-flowing Atlantic
Water, strongly influence Arctic sea-ice distribution, ocean–atmosphere
exchanges, and pan-Arctic temperatures. Palaeoceanographic reconstructions
from marine sediments near Fram Strait have documented a dramatic increase
in Atlantic Water temperatures over the 20th century, unprecedented in
the last millennium. Here we present results from Earth system model
simulations that reproduce and explain the reconstructed exceptional
Atlantic Water warming in Fram Strait in the 20th century in the
context of natural variability during the last millennium. The associated
increase in ocean heat transfer to the Arctic can be traced back to changes
in the ocean circulation in the subpolar North Atlantic. An interplay
between a weakening overturning circulation and a strengthening subpolar
gyre as a consequence of 20th-century global warming is identified as the
driving mechanism for the pronounced warming along the Atlantic Water path
toward the Arctic. Simulations covering the late Holocene provide a
reference frame that allows us to conclude that the changes during the last
century are unprecedented in the last 1150 years and that they cannot be
explained by internal variability or natural forcing alone
Novos registros da tribo Bignonieae (Bignoniaceae) na Paraíba, Nordeste do Brasil
No full textThis study reports eight new records of the tribe Bignonieae (Bignoniaceae) for Paraiba state, northeastern Brazil: Anemopaegma album (Mart. ex DC.), Anemopaegma gracile Bureau & K.Schum., Bignonia corymbosa (Vent.) L.G. Lohmann, Bignonia ramentacea (Mart. ex DC.) L.G. Lohmann, Bignonia sciuripabulum (K. Schum.) L.G. Lohmann, Cuspidaria argentea (Wawra) Sandwith, Cuspidaria lateriflora (Mart.) DC., and Fridericia conjugata (Vell.) L.G. Lohmann. These species were found in the Caatinga and/or the Atlantic Forest, growing on sandy and clay soils of dry and humid forests, from lowlands to high altitudes. For each new occurrence for the state of Paraiba, we present detailed description, taxonomic notes, and information on phenology, geographic distribution, illustrations and photographs.Este estudo reporta oito novos registros da tribo Bignonieae (Bignoniaceae) para o estado da Paraíba, nordeste de Brasil: Anemopaegma album Mart. ex DC., Anemopaegma gracile Bureau & K. Schum., Bignonia corymbosa (Vent.) L.G. Lohmann, Bignonia ramentacea (Mart. ex DC.) L.G. Lohmann, Bignonia sciuripabulum (K. Schum.) L.G. Lohmann, Cuspidaria argentea (Wawra) Sandwith, Cuspidaria lateriflora (Mart.) DC. e Fridericia conjugata (Vell.) L.G. Lohmann. Estas espécies são encontradas na Caatinga e/ou Mata Atlântica, crescendo em solos arenosos e argilosos de florestas secas e úmidas, desde áreas baixas até altas altitudes. Para cada novo registro do estado da Paraíba, apresentamos descrições detalhadas, notas taxonômicas e informações sobre fenologia, distribuição geográfica, ilustrações e fotografias
Wo bleibt der "gute Lehrer"" in der Projektarbeit?
No full textKroeger H. Wo bleibt der "gute Lehrer"" in der Projektarbeit? In: Lohmann K, ed. Auf der Suche nach dem guten Lehrer: Meditationen und Reflexionen aus der Bielefelder Arbeitsgemeinschaft für Lehrerbildung (AGL). Bundesarbeitskreis der Seminar- und Fachleiter e.V. ; 1993,4. Rinteln: Merkur; 1994: 45-50
Does my service have unspecified behavior?
No full textServices are loosely coupled interacting software components. Since two or more services are usually composed to one software system, the behavior of an implemented service should not differ to its specification. Therefore we propose an approach to test, if the implementation contains unspecified behavior. Due to the interacting nature of services this is a nontrivial task
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