ALBERT

All Library Books, journals and Electronic Records Telegrafenberg

X
feed icon rss

Your email was sent successfully. Check your inbox.

An error occurred while sending the email. Please try again.

Proceed reservation?

Export
Filter
  • 2005-2009  (185)
  • 1960-1964  (5)
Collection
Keywords
Publisher
Years
Year
  • 1
    facet.materialart.
    Unknown
    Profile of sediment echo sounding with links to ParaSound data files and swath sonar multibeam bathymetry during METEOR cruise M70/2b (2009)
    PANGAEA
    In:  Supplement to: Dupré, S; Buffet, G; Mascle, Jean; Foucher, Jean Paul; Gauger, Steffen; Boetius, Antje; Marfia, C; AsterX AUV Team; Quest ROV Team; BIONIL Scientific Party (2009): High-resolution mapping of large gas emitting mud volcanoes on the Egyptian continental margin (Nile Deep Sea Fan) by AUV surveys. Marine Geophysical Research, 29(4), 275-290, https://doi.org/10.1007/s11001-009-9063-3
    Details
    Publication Date: 2024-02-16
    Description: Two highly active mud volcanoes located in 990-1,265 m water depths were mapped on the northern Egyptian continental slope during the BIONIL expedition of R/V Meteor in October 2006. High-resolution swath bathymetry and backscatter imagery were acquired with an autonomous underwater vehicle (AUV)-mounted multibeam echosounder, operating at a frequency of 200 kHz. Data allowed for the construction of ~1 m pixel bathymetry and backscatter maps. The newly produced maps provide details of the seabed morphology and texture, and insights into the formation of the two mud volcanoes. They also contain key indicators on the distribution of seepage and its tectonic control. The acquisition of high-resolution seafloor bathymetry and acoustic imagery maps with an AUV-mounted multibeam echosounder fills the gap in spatial scale between conventional multibeam data collected from a surface vessel and in situ video observations made from a manned submersible or a remotely operating vehicle.
    Keywords: BIONIL; CT; M70/2a; M70/2a-track; M70/2b; M70/2b-track; MEDIFLUX; Mediterranean Sea; Meteor (1986); Processes at the Passive Continental Margins; Underway cruise track measurements
    Type: Dataset
    Format: application/zip, 5 datasets
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    DATA PANGAEA
  • 2
    Electronic Resource
    Electronic Resource
    Mutations in SYNE1 lead to a newly discovered form of autosomal recessive cerebellar ataxia (2007)
    [s.l.] : Nature Publishing Group
    Nature genetics 39 (2007), S. 80-85 
    Details
    ISSN: 1546-1718
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Medicine
    Notes: [Auszug] The past decade has seen great advances in unraveling the biological basis of hereditary ataxias. Molecular studies of spinocerebellar ataxias (SCA) have extended our understanding of dominant ataxias. Causative genes have been identified for a few autosomal recessive ataxias: Friedreich's ataxia, ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/ng1927
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 3
    Electronic Resource
    Electronic Resource
    Oxidation of Benzyl Alcohols with Manganese Dioxide (1964)
    [s.l.] : Nature Publishing Group
    Nature 202 (1964), S. 179-181 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] Table 1 summarizes the extent of oxidation to benzalde-hyde obtained from a 10 : 1 weight ratio of manganese dioxide to benzyl alcohol (2 per cent solution) in various solvents and temperatures. The dioxides were chosen to give a wide difference in oxidizing ability8. The corresponding rate of ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/202179a0
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 4
    Electronic Resource
    Electronic Resource
    Optimizing a transformer driven active magnetic shield in induction heating (2005)
    Bradford : Emerald
    Compel 24 (2005), S. 1241-1257 
    Details
    ISSN: 0332-1649
    Source: Emerald Fulltext Archive Database 1994-2005
    Topics: Electrical Engineering, Measurement and Control Technology , Mathematics
    Notes: Purpose - To design an optimal active shield for the mitigation of the magnetic stray field around an induction heating device. Design/methodology/approach - The active shield consists of several compensation coils in series and generates a counter field opposite to the main field. One extra compensation winding - the "generating compensation winding" (GCW) - is positioned close to the excitation coil and works as the secondary winding of a transformer. The power in this winding is used to drive the other compensation coils (the active shield), which are the load of the transformer. A circuit with passive components is inserted between the GCW and the other compensation coils. The shield is optimal if it achieves a high field reduction, while the energy dissipation is low. By using a genetic algorithm (GA) that minimizes an objective function, the optimization algorithm finds the optimal geometry and the optimal current for the GCW and the other compensation coils. The objective function uses time harmonic and axisymmetric finite element calculations. Findings - The transformer driven active shield reduces the magnetic field effectively. It is cheap and easy to build, but it works well only for one frequency. Research limitations/implications - The shield is sensitive to tuning of the passive circuit and to changes in the frequency of the induction heater. Practical implications - This transformer driven shield is an alternative for the classical active shield with external power supply. Originality/value - An active shield that does not need an external power supply is a cheap solution for the shielding of magnetic fields.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1108/03321640510615580
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 5
    Electronic Resource
    Electronic Resource
    Analytical formulation for magnetic shields taking into account hysteresis effects in the Rayleigh region (2005)
    Bradford : Emerald
    Compel 24 (2005), S. 1470-1491 
    Details
    ISSN: 0332-1649
    Source: Emerald Fulltext Archive Database 1994-2005
    Topics: Electrical Engineering, Measurement and Control Technology , Mathematics
    Notes: Purpose - To study the magnetic shielding and the losses of non-linear, hysteretic multilayered shields by using fast to evaluate analytical expressions. Design/methodology/approach - In order to evaluate the shield in the frequency domain, the non-linear shield is divided into a sufficient number of piecewise linear sublayers. Each sublayer has a permeability that is constant (space independent) and complex (to model hysteresis). This expression for the permeability is found from the Preisach model by a Fourier transform. Once H is known in the entire shield, analytical expressions calculate the eddy current losses and hysteresis losses in the material. The validity of the analytical expressions is verified by numerical experiments. Findings - In the Rayleigh region, the shielding factor of perfectly linear material is better than the one of non-linear metal sheets, but also the eddy current losses are higher. The results of the optimization show that steel is only a useful shielding material at low frequencies. Research limitations/implications - The analytical method is valid for infinitely long shields and for weak imposed fields in the Rayleigh region. Practical implications - As the analytical expressions can be evaluated very fast (in comparison with slow finite elements models), many magnetic shields can be compared in parametric studies. Originality/value - Analytical expressions exist for the shielding factor and the losses of linear materials. In this paper, the method is extended for non-linear hysteretic materials. The effects of several parameters (material parameters, incident fields parameters) on the shielding and the losses are shown.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1108/03321640510615733
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 6
    Electronic Resource
    Electronic Resource
    Development of an autotrophic culture system for the in vitro mycorrhization of potato plantlets (2005)
    Oxford, UK : Blackwell Publishing Ltd
    FEMS microbiology letters 248 (2005), S. 0 
    Details
    ISSN: 1574-6968
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Biology
    Notes: An autotrophic culture system was developed for the in vitro mycorrhization of potato plantlets. Roots of micropropagated plantlets were associated to an arbuscular mycorrhizal fungus under in vitro conditions, while shoots developed under open air conditions. Several thousand spores, an extensive extraradical mycelium and an abundant root colonization were obtained. Spores were able to colonize new plantlets under the same conditions. These results support the capacity of the autotrophic culture system to continuously culture arbuscular mycorrhizal fungi and may serve as a powerful tool to investigate various aspects of the symbiosis for which a source–sink relationship and photosynthetic active tissues are necessary.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1016/j.femsle.2005.05.025
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 7
    Electronic Resource
    Electronic Resource
    Two-step activation of ATM by DNA and the Mre11–Rad50–Nbs1 complex (2006)
    [s.l.] : Nature Publishing Group
    Nature structural & molecular biology 13 (2006), S. 451-457 
    Details
    ISSN: 1545-9985
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Medicine
    Notes: [Auszug] DNA double-strand breaks (DSBs) trigger activation of the ATM protein kinase, which coordinates cell-cycle arrest, DNA repair and apoptosis. We propose that ATM activation by DSBs occurs in two steps. First, dimeric ATM is recruited to damaged DNA and dissociates into monomers. The ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/nsmb1090
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 8
    facet.materialart.
    Unknown
    A new collector for sampling volcanic aerosols (2005)
    Elsevier
    Details
    Publication Date: 2017-04-04
    Description: A new apparatus, Venturi Effect System (VES), designed for sampling volcanic plumes is described and tested at Vulcano (Italy). This device, together with purified basic NH4OH solutions, supplies optimal conditions to obtain reliable Stotal/Cl/F ratios and enrichment factors for metallic trace elements (MTE). Good concordance for acid gas ratios and metal enrichment factors in both the gas phase and the related plume allows the procedure to be validated. The VES appears in Vulcano conditions as a simple, robust and easily portable apparatus that allows reliable collection of both acid gases and MTE within a single sample and the analysis with current chemical methods (High Pressure Liquid Chromatography, Inductively Coupled Plasma-Mass Spectrometry. This apparatus may be suitable for more difficult volcanoes where only the plume can be sampled.
    Description: Published
    Description: 95-103
    Description: partially_open
    Keywords: volcanic plume ; acid gases ; metallic trace elements ; sampling ; monitoring ; 03. Hydrosphere::03.02. Hydrology::03.02.02. Hydrological processes: interaction, transport, dynamics ; 03. Hydrosphere::03.02. Hydrology::03.02.03. Groundwater processes
    Repository Name: Istituto Nazionale di Geofisica e Vulcanologia (INGV)
    Type: article , article
    Format: 1060439 bytes
    Format: 539 bytes
    Format: application/pdf
    Format: text/html
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    PAPER (OA)
  • 9
    facet.materialart.
    Unknown
    Structure and Driver of Cold Seep Ecosystems (2009)
    In:  EPIC3OCEANOGRAPHY, 22, pp. 92-109
    Details
    Publication Date: 2014-09-17
    Repository Name: EPIC Alfred Wegener Institut
    Type: Article , isiRev
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    PAPER (OA)
  • 10
    facet.materialart.
    Unknown
    High-resolution mapping of large gas emitting mud volcanoes on the Egyptian continental margin (Nile Deep Sea Fan) by AUV surveys. (2008)
    In:  EPIC3MARINE GEOPHYSICAL RESEARCHES, 29(4), pp. 275-290, ISBN: 0025-3235 (Print) 1
    Details
    Publication Date: 2014-09-17
    Repository Name: EPIC Alfred Wegener Institut
    Type: Article , isiRev
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    PAPER (OA)
Close ⊗
This website uses cookies and the analysis tool Matomo. More information can be found here...