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  • 2005-2009  (3,061)
  • 2000-2004  (2,602)
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  • 1
    Monograph available for loan
    Monograph available for loan
    Atmospheric ammonia : detecting emission changes and environmental impacts ; results of an expert workshop under the Convention on Long-range Transboundary Air Pollution ; [the 'Edinburgh Wokshop' ; 4 - 6 December 2006] (2009)
    [Dordrecht] : Springer
    Details Availability
    Call number: PIK N 076-11-0312
    Description / Table of Contents: Contents: 1. Introduction ; PART I: AMMONIA CRITICAL THRESHOLDS ; 2. Reassessment of critical levels for atmospheric ammonia ; 3. Potential for the further development and application of critical levels to assess the environmental impacts of ammonia. ; 4. Long-term cumulative exposure exacerbates the effects of atmospheric ammonia on an ombrotrophic bog: Implications for Critical Levels. ; 5. The application of transects to assess the effects of ammonia on woodland groundflora. ; 6. Estimation of the ammonia critical level for epiphytic lichens based on observations at farm, landscape and national scales. ; 7. Mapping ammonia emissions and concentrations for Switzerland - effects on lichen vegetation. ; 8. Over which averaging period is the ammonia critical level most precautionary? ; 9. Machrolichens on twigs and trunks as indicators of ammonia concentrations across the UK - a practical method. ; 10. Assessment of critical levels of atmospheric ammonia for lichen diversity in cork-oak woodland, Portugal. ; PART II: TEMPORAL TRENDS IN ATMOSPHERIC AMMONIA ; 11. Linking ammonia emission trends to measured concentrations and deposition of reduced nitrogen at different scales. ; 12. Long-term record (1981-2005) of ammonia and ammonium concentrations at K-puszta Hungary and the effect of SO2 emission change on measured and modelled concentrations. ; 13. Assessment of NH3 and NH4+ trends and relationship to critical levels in the UK National Ammonia Monitoring Network (NAMN). ; 14. Review of published studies estimating the abatement efficacy of reduced-emission slurry spreading techniques. ; PART III: ANALYSIS OF AMMONIA HOTSPOTS ; 15. Ammonia deposition near hot spots: processes, models and monitoring methods. ; 16. Standardised grasses as biomonitors of ammonia pollution around agricultural point sources. ; 17. Soluble ammonium in plants as a bioindicator for atmospheric nitrogen deposition: refinement and testing of a practical method. ; 18. Spatial planning as a complementary tool to abate the effects of atmospheric NH# deposition at the landscape scale. ; PART IV: REGIONAL MODELLING OF ATMOSPHERIC AMMONIA ; 19. Modelling of the atmospheric transport and deposition of ammonia at a national and regional scale. ; 20. Application of a Lagrangian model FRAME to estimate reduced nitrogen deposition and ammonia concentrations in Poland. ; 21. Application of the EMEP Unified Model to the UK with a horizontal resolution of 5 x 5 km2. ; PART V: CONCLUSIONS AND OUTLOOK ; 22. Critical Levels for NH3. ; 23. Detecting change in atmospheric ammonia following emission changes. ; 24. Assessment methods for ammonia hot-spots. ; 25. Modelling the national and regional transport and deposition of ammonia. 26. Reliability of ammonia emission estimates and abatement efficiencies. ; 27. Ammonia policy context and future challenges. ; 28. Synthesis and summary for policy makers.
    Type of Medium: Monograph available for loan
    Pages: XXIII, 464 S. : Ill., graph. Darst., Kt.
    ISBN: 9781402091209 , 978-1-4020-9121-6
    Location: A 18 - must be ordered
    Branch Library: PIK Library
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  • 2
    Series available for loan
    Series available for loan
    Volcanic rifted margins (2002)
    Boulder, Colo. : The Geological Society of America
    Associated volumes
    Details Availability
    Call number: S 90.0095(362)
    In: Special paper / The Geological Society of America, 362
    Type of Medium: Series available for loan
    Pages: VI, 230 Seiten , Illustrationen, graphische Darstellungen, Karten
    ISBN: 0-8137-2362-0
    Series Statement: Special paper / The Geological Society of America 362
    URL: http://digitale-objekte.hbz-nrw.de/storage2/2018/06/15/file_365/7918592.pdf
    Language: English
    Note: Preface 1. Characteristics of volcanic rifted margins Martin A. Menzies, Simon L. Klemperer, Cynthia J. Ebinger, and Joel Baker 2. Crust and upper mantle structure in East Africa: Implications for the origin of Cenozoic rifting and volcanism and the formation of magmatic rifted margins Andrew A. Nyblade 3. Development of the Lebombo rifted volcanic margin of southeast Africa M.K. Watkeys 4. Extension and uplift of the northern Rio Grande Rift: Evidence from ⁴⁰Ar/³⁹Ar geochronology from the Sangre de Cristo Mountains, south-central Colorado and northern New Mexico Daniel P. Miggins, Ren A. Thompson, Charles L. Pillmore, Lawrence W. Snee, and Charles R. Stern 5. Lithospheric mantle beneath Arabia: A Pan-African protolith modified by the Afar and older plumes, rather than a source for continental flood volcanism? Joel Baker, Gilles Chazot, Martin A. Menzies, and Matthew Thirlwall 6. Petrogenesis of the Late Cretaceous tholeiitic magmatism in the passive margins of northeastern Madagascar Leone Melluso, Vincenzo Morra, Pietro Brotzu, Massimo D'Antonio, and Lucia Bennio 7. Silicic volcanism: An undervalued component of large igneous provinces and volcanic rifted margins Scott E. Bryan, Teal R. Riley, Dougal A. Jerram, Christopher J. Stephens, and Philip T Leat 8. Volcanology and fades architecture of flood basalts Dougal A. Jerram 9. East Greenland coast-parallel dike swarm and its role in continental breakup Martin Bromann Klausen and Hans Christian Larsen 10. Crustal architecture of South Atlantic volcanic margins W.U. Mohriak, B.R. Rosendahl, J.P. Turner, and S.C. Valente 11. Volcanic passive margin of Namibia: A potential fields perspective B. Corner, J. Cartwright, and R. Swart 12. Petrophysical modeling of high seismic velocity crust at the Namibian volcanic margin R.B. Trumbull, S.V. Sobolev, and K. Bauer
    Location: Lower compact magazine
    Branch Library: GFZ Library
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  • 3
    Electronic Resource
    Electronic Resource
    Metal substitution in transferrins: specific binding of cerium(IV) revealed by the crystal structure of cerium-substituted human lactoferrin (2000)
    Springer
    JBIC 5 (2000), S. 692-698 
    Details
    ISSN: 1432-1327
    Keywords: Metal substitution Cerium binding Lactoferrin Crystal structure Transferrin
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Chemistry and Pharmacology
    Notes: Abstract. Proteins of the transferrin family play a key role in iron homeostasis through their extremely strong binding of iron, as Fe3+. They are nevertheless able to bind a surprisingly wide variety of other metal ions. To investigate how metal ions of different size, charge and coordination characteristics are accommodated, we have determined the crystal structure of human lactoferrin (Lf) complexed with Ce4+. The structure, refined at 2.2 Å resolution (R=20.2%, R free=25.7%) shows that the two Ce4+ ions occupy essentially the same positions as do Fe3+, and that the overall protein structure is unchanged; the same closed structure is formed for Ce2Lf as for Fe2Lf. The larger metal ion is accommodated by small shifts in the protein ligands, made possible by the presence of water molecules adjacent to each binding site. The two Ce4+ sites are equally occupied, indicating that the known difference in the pH-dependent release of Ce4+ arises from a specific protonation event, possibly of the His ligand in one of the binding sites. Comparing the effects of binding Ce4+ with those for the binding of other metal ions, we conclude that the ability of transferrins to accommodate metal ions other than Fe3+ depends on an interplay of charge, size, coordination and geometrical preferences of the bound metal ion. However, it is the ability to accept the six-coordinate, approximately octahedral, site provided by the protein that is of greatest importance.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s007750000157
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  • 4
    Electronic Resource
    Electronic Resource
    Expression, crystallization and preliminary characterization of methylmalonyl coenzyme A epimerase from Propionibacterium shermanii (2001)
    Copenhagen : International Union of Crystallography (IUCr)
    Acta crystallographica 57 (2001), S. 706-708 
    Details
    ISSN: 1399-0047
    Source: Crystallography Journals Online : IUCR Backfile Archive 1948-2001
    Topics: Chemistry and Pharmacology , Geosciences , Physics
    Notes: Methylmalonyl-CoA epimerase (MMCE) is an enzyme that interconverts the R and S epimers of methylmalonyl-CoA in the pathway that links propionyl-CoA with succinyl-CoA. This is used for both biosynthetic and degradative processes, including the breakdown of odd-numbered fatty acids and some amino acids. The enzyme has been expressed in Escherichia coli both as the native enzyme and as its selenomethionine (SeMet) derivative. Crystals of both forms have been obtained by vapour diffusion using monomethylether PEG 2000 as precipitant. The native MMCE crystals are orthorhombic, with unit-cell parameters a = 56.0, b = 114.0, c = 156.0 Å, and the SeMet-MMCE crystals are monoclinic, with unit-cell parameters a = 43.6, b = 78.6, c = 89.4 Å, β = 92.0°; both diffract to better than 2.8 Å resolution.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1107/S0907444901002050
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  • 5
    Electronic Resource
    Electronic Resource
    Crystallization and preliminary X-ray analysis of native and recombinant human bile-salt dependent lipase: strategies for improvement of diffraction quality (2000)
    Copenhagen : International Union of Crystallography (IUCr)
    Acta crystallographica 56 (2000), S. 478-480 
    Details
    ISSN: 1399-0047
    Source: Crystallography Journals Online : IUCR Backfile Archive 1948-2001
    Topics: Chemistry and Pharmacology , Geosciences , Physics
    Notes: Human bile-salt dependent lipase (BSDL), secreted into both the digestive tract and human milk, is integral to the effective absorption of dietary lipids. In attempts to obtain crystals suitable for high-resolution X-ray crystallographic studies, various forms of the enzyme have been crystallized, including native and desialidated human milk BSDL and both intact recombinant BSDL and a truncated form lacking the heavily glycosylated C-terminal repeat region. Trigonal crystals of native BSDL, with unit-cell parameters a = b = 90.0, c = 156.1 Å, were obtained using 15–20%(w/v) PEG 8000 as precipitant. These crystals diffract to 3.5 Å along the unique axis, but to only 5–7 Å in orthogonal directions. Crystals of recombinant truncated BSDL grown from 15–20%(w/v) PEG 6000 are orthorhombic, space group P212121, with unit-cell parameters a = 59.2, b = 90.0, c = 107.7 Å, and diffract to 2.6 Å resolution. These are suitable for structural analysis by X-ray crystallography.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1107/S0907444900000986
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  • 6
    Electronic Resource
    Electronic Resource
    Subunit dissociation and reassociation leads to preferential crystallization of haemoglobin Bart's (γ4) from solutions of human embryonic haemoglobin Portland (ζ2γ2) at low pH (2001)
    Copenhagen : International Union of Crystallography (IUCr)
    Acta crystallographica 57 (2001), S. 921-924 
    Details
    ISSN: 1399-0047
    Source: Crystallography Journals Online : IUCR Backfile Archive 1948-2001
    Topics: Chemistry and Pharmacology , Geosciences , Physics
    Notes: A variety of human haemoglobins (Hbs) are produced at different stages of human development, including three embryonic Hbs, foetal Hb and adult Hb. All are heterotetramers. During crystallization experiments on human embryonic Hb Portland (ζ2γ2), it was discovered by crystallographic and biochemical analysis that the homotetramer Hb Bart's (γ4) preferentially crystallizes from ζ2γ2 solutions below pH 5. This results from dissociation of Hb Portland into γ2 dimers and ζ monomers and has interesting implications for subunit interactions and tetramer stability in Hbs. It also makes possible a full crystallographic analysis of Hb Bart's, which is of considerable medical significance because of its presence in the red blood cells of millions of people worldwide who suffer from α-thalassaemia.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1107/S0907444901004516
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  • 7
    Electronic Resource
    Electronic Resource
    Mae mediates MAP kinase phosphorylation of Ets transcription factors in Drosophila (2001)
    [s.l.] : Macmillian Magazines Ltd.
    Nature 411 (2001), S. 330-334 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] The evolutionarily conserved Ras/mitogen-activated protein kinase (MAPK) cascade is an integral part of the processes of cell division, differentiation, movement and death. Signals received at the cell surface are relayed into the nucleus, where MAPK phosphorylates and thereby modulates the ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/35077122
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  • 8
    Electronic Resource
    Electronic Resource
    A NEW SPECIES OF BEAKED WHALE MESOPLODON PERRINI SP. N. (CETACEA: ZIPHIIDAE) DISCOVERED THROUGH PHYLOGENETIC ANALYSES OF MITOCHONDRIAL DNA SEQUENCES (2002)
    Oxford, UK : Blackwell Publishing Ltd
    Marine mammal science 18 (2002), S. 0 
    Details
    ISSN: 1748-7692
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Biology
    Notes: Mesoplodon perrini, a new species of beaked whale is described on the basis of five animals stranded on the coast of California (between 32°55′N, 117°15′W and 36°37′N, 121°55′W) from May 1975 to September 1997. Four of these animals were initially identified as Hector's beaked whales M. hectori based on cranial morphology (Mead 1981). A fifth specimen was initially identified as a neonate Cuvier's beaked whale Ziphius cavirostris based on external features. These specimens were first recognized as representatives of an undescribed species through phylogenetic analysis of mitochondrial (mt) DNA control region and cytochrome b sequence data. Although similar morphologically, the genetic data do not support a close evolutionary relationship between M. perrini and M. hectori. Instead, these data suggest a possible sister species relationship with the lesser beaked whale M. peruvianus. Sightings of two small beaked whales off California in the 1970s which were tentatively identified as M. hectori are also likely to be M. perrini. We suggest that M. hectori is confined to the Southern Hemisphere, while M. perrini is known to date only from the North Pacific.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1748-7692.2002.tb01061.x
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  • 9
    Electronic Resource
    Electronic Resource
    RESURRECTION OF MESOPLODON TRAVERSII (GRAY, 1874), SENIOR SYNONYM OF M. BAHAMONDI REYES, VAN WAEREBEEK, CÁRDENAS AND YÁÑEZ, 1995 (CETACEA: ZIPHIIDAE) (2002)
    Oxford, UK : Blackwell Publishing Ltd
    Marine mammal science 18 (2002), S. 0 
    Details
    ISSN: 1748-7692
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Biology
    Notes: Mesoplodon traversii (Gray, 1874) is shown to be a senior synonym of the recently described beaked whale Mesoplodon hahamondi Reyes et al., 1995 on the basis of a phylogenetic analysis of mitochondrial DNA control region sequences. The mandible and teeth of M. traversii, first reported in 1873 by Hector as Dolichodon layardii. are redescribed. The species can be distinguished by features of the calvaria; including the large jugal, broad rostrum, and small distance between premaxillary foramina. The male teeth, which are large and spade-shaped with a strong terminal denticle, are also diagnostic. M. traversii is known only from Pitt Island and White Island, New Zealand and Robinson Crusoe Island, Juan Fernandez Archipelago, Chile.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1748-7692.2002.tb01062.x
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  • 10
    Electronic Resource
    Electronic Resource
    Technical Opportunities for International Collaborations by the U.S. Fusion Program (2000)
    Springer
    Journal of fusion energy 19 (2000), S. 65-79 
    Details
    ISSN: 1572-9591
    Keywords: Fusion energy ; international collaboration
    Source: Springer Online Journal Archives 1860-2000
    Topics: Energy, Environment Protection, Nuclear Power Engineering
    Notes: Abstract This report was prepared by a Working Group at the request of the U.S. Department of Energy, Office of Fusion Energy Sciences in 1997. The report addresses technical opportunities for mutually beneficial collaboration between the United States and other international fusion research programs. A number of outstanding opportunities are discussed.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1023/A:1012281826821
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