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
Collection
Keywords
Publisher
Language
Years
  • 1
    Monograph available for loan
    Monograph available for loan
    Namaqualand metamorphic complex : a contribution to the National Geodynamics Programme (1983)
    Johannesburg
    Details Availability
    Call number: MR 22.94949
    Type of Medium: Monograph available for loan
    Pages: VII, 198 Seiten , Illustrationen, graphische Darstellungen, Karten , 2 Karten
    ISBN: 0-620-06641-5
    Series Statement: Geological Society of South Africa: Special publication 10
    Language: English
    Note: Kartenbeilage unter dem Titel: National geodynamics Project-Upington geotraverse : simplified geological map 〈1: 250000〉 : Draughting and colour seperation by R M E Kováts /by V Vajner, J van Bever Donker, C Z van Zyl, and C.W.Stowe , Kartenbeilage unter dem Titel: The Namaqualand geotraverse 〈1: 250000〉 /by H.J. Blignault, J.A.H. Marais, S.W. van der Merwe, G. van Aswegen and J.A. Muller
    Location: Upper compact magazine
    Branch Library: GFZ Library
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    BOOK
    Link to Library Catalog
    get availability status
  • 2
    Electronic Resource
    Electronic Resource
    Respiratory metabolism and gene expression during seed germination (1992)
    Springer
    Plant growth regulation 11 (1992), S. 211-224 
    Details
    ISSN: 1573-5087
    Keywords: Germination ; energy metabolism ; gene expression ; regulation ; respiration
    Source: Springer Online Journal Archives 1860-2000
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: Abstract Oxygen uptake and carbon dioxide release rapidly increase in seeds during imbibition. The oxygen uptake is associated with oxidative phosphorylation through cytochrome oxidase. During the early stage of germination substrate level phosphorylation may also contribute to ATP production. All indications suggest that this route of ATP production is insignificant during aerobic germination. However, during oxygen stress, substrate level phosphorylation does significantly contribute to ATP production in some species. Carbohydrate oxidation plays a significant role in the germination process. Up to two thirds of the carbon from carbohydrate breakdown enters the tricarboxylic acid cycle through the phosphoenolpyruvate carboxylase reaction. This anapleurotic input into the Krebs cycle most probably reflects the high demand on intermediates from the cycle for biosynthesis. The extent to which other substrates are utilized for respiration is uncertain. Information regarding the levels of key metabolites and enzymes, as well as their cellular distribution is limited. The involvement of gene expression in the regulation of respiratory metabolism is poorly characterised. Several genes which have been cloned are only expressed during germination. With the exception of the early methionine labeled polypeptide, little is known about the function of these genes.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00024560
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 3
    facet.materialart.
    Unknown
    Inflation of 430-parsec bipolar radio bubbles in the Galactic Centre by an energetic event (2019)
    Springer Nature
    In: Nature
    Details
    Publication Date: 2019
    Print ISSN: 0028-0836
    Electronic ISSN: 1476-4687
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Published by Springer Nature
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    PAPER CURRENT
  • 4
    facet.materialart.
    Unknown
    Growth and electrical characterization of Zn-doped InAs and InAs1−xSbx (2009)
    Elsevier
    Details
    Publication Date: 2009-06-01
    Print ISSN: 0040-6090
    Electronic ISSN: 1879-2731
    Topics: Physics
    Published by Elsevier
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    PAPER CURRENT
  • 5
    facet.materialart.
    Unknown
    Ontogenetic and inter-elemental osteohistological variability in the leopard tortoise Stigmochelys pardalis (2019)
    PeerJ
    Details
    Publication Date: 2019-12-17
    Description: Testudines are a group of reptiles characterized by the presence of a shell covered by keratinous shields. Stigmochelys pardalis is the most widely distributed terrestrial testudine in southern Africa. Although relatively common with some life history traits being well known, the growth of this species has yet to be studied in any detail. The bone microanatomy of this clade differs from that found in other amniotes, where terrestrial species tend to display characteristics normally seen in aquatic species and vice versa. A detailed histological analysis of the limb bones of S. pardalis reveals extensive variation through ontogeny. Cortical bone becomes increasingly thicker through ontogeny and is finally resorbed in the late sub-adult stage, resulting in a thin cortex and a large infilled medullary cavity. The predominant bone tissues are parallel-fibred and lamellar-zonal for the forelimbs and hind limbs respectively. The oldest individual displayed an External Fundamental System indicating that the growth rate had decreased substantially by this stage. Variability is prevalent between the forelimb and hind limb as well as between early and late sub-adults Forelimb elements exhibit characteristics such as faster growing parallel-fibered bone tissue, slightly higher vascularization and a predominance of annuli over Lines of Arrested Growth (LAG) compared to the hind limb which exhibits poorly vascularized, slower growing lamellar-zonal bone interrupted by LAGs. These differences indicate that the forelimb grew more rapidly than the hind limb, possibly due to the method of locomotion seen in terrestrial species. The extensive bone resorption that occurs from the early sub-adult stage destroys much of the primary cortex and results in a significantly different ratio of inner and outer bone diameter (p = 3.59 × 10­−5; df = 28.04) as well as compactness (p = 2.91 × 10­−5; df = 31.27) between early and late sub-adults. The extensive bone resorption seen also destroys the ecological signal and infers an aquatic lifestyle for this species despite it being clearly terrestrial. This supports the results of other studies that have found that using bone microanatomy to determine lifestyle in testudines does not produce accurate results.
    Electronic ISSN: 2167-8359
    Topics: Biology , Medicine
    Published by PeerJ
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    PAPER CURRENT
  • 6
    facet.materialart.
    Unknown
    Inflation of 430-parsec bipolar radio bubbles in the Galactic Centre by an energetic event (2019)
    Springer Nature
    Details
    Publication Date: 2019-09-11
    Print ISSN: 0028-0836
    Electronic ISSN: 1476-4687
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Published by Springer Nature
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    PAPER CURRENT
  • 7
    facet.materialart.
    Unknown
    Electrical properties of undoped and doped MOVPE-grown InAsSb (2007)
    Elsevier
    Details
    Publication Date: 2007-01-01
    Print ISSN: 0022-0248
    Electronic ISSN: 1873-5002
    Topics: Chemistry and Pharmacology , Geosciences , Physics
    Published by Elsevier
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    PAPER CURRENT
  • 8
    facet.materialart.
    Unknown
    Research in quantitative mineralogy: Examples from diverse applications (2009)
    Elsevier
    Details
    Publication Date: 2009-03-01
    Print ISSN: 0892-6875
    Electronic ISSN: 1872-9444
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Published by Elsevier
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    PAPER CURRENT
  • 9
    facet.materialart.
    Unknown
    Intertidal and subtidal benthic reflectance spectra collected at Georgina Cay (Lihou Reef National Marine Park, Coral Sea Territory, Australia) (2017)
    PANGAEA
    Details
    Publication Date: 2023-01-13
    Description: Field work was undertaken in the Lihou Reef National Marine Park (Coral Sea Territory, Australia, 17.583°S, 151.517°E) in December 2008. The aim of the remote sensing component of the field work was to collect in situ data for both remote sensing model parameterisation and for validation of remote sensing based results. Effort was placed on trying to characterise the (variations in) optical properties of the benthic substrates and vegetation that are part of the Lihou Reef Cay system (i.e. surrounding reefs and islands, respectively). Sample biotic and abiotic benthic types were sourced in situ in the intertidal- (exposed, above water) and the near-shore subtidal (submerged) zone. Benthic substratum reflectance spectra were measured from opportunistic samples collected in the intertidal and subtidal zone by snorkelers and divers. Spectral data was collected with an ASD FieldSpec Pro HandHeld spectroradiometer (http://www.asdi.com) which is designed for portability and measures over the range 325 to 1075 nm with a sampling interval of 1.4nm and a Full Width at Half Maximum (FWHM) resolution of 3nm. Substratum irradiance reflectance was calculated as the ratio of the upwelling radiance (Lu) and the downwelling irradiance (Ed): Rsub = Lu/Ed Thus the substratum reflectance is a measure of the reflection of light from the target irrespective of the illumination quantity. All measurements were collected close to the target with a 5° fore-optic fitted to the optical fibre, limiting the instrument field of view (FOV) to that of the only the target. This was done to ensure that only pure end-member spectra were collected. Ed was defined by a spectralon panel and at the same distance as the selected target. Above-water spectra were collected with the foreoptic mounted in a standard pistol-grip enabling accurate pointing of the fibre within its FOV boundaries. Reference spectra from the spectralon panel were collected at frequent intervals to compensate for the effects of variable atmospheric conditions on natural irradiance. Field spectral reflectance values were corrected for irradiance variations, assuming a linear change in irradiance over time, using these reference spectra. Additional data collected during this field campaign included: - Reflectance spectra of, intertidal and benthic substrates believed to be representative of the island/lagoon system using a non-submersible ASD FieldSpec handheld spectrometer as well as a submersible HydroRad spectrometer. - Measurements were made of the optical quality of the waters within the Lihou lagoon, the individual cay lagoons of Georgina, Anne, Lorna and Turtle cays as well as the surrounding open ocean locations.
    Type: Dataset
    Format: application/zip, 3 datasets
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    DATA PANGAEA
  • 10
    facet.materialart.
    Unknown
    Estuarine macrophytes and saltmarsh vegetation reflectance spectra collected at Wallis Lake (NSW, Australia) (2017)
    PANGAEA
    Details
    Publication Date: 2023-01-13
    Description: Wallis Lake is a shallow estuarine lake system consisting of lakes and rivers with interconnecting channels. The lake is a significant environmental resource and is also used for recreational activities and aquaculture. In collaboration with participants from NSW DPI, CSIRO undertook a fieldwork campaign at Wallis Lake 12-16 May 2008 to fill in known gaps in saltmarsh, mangrove, seagrass and macro-algae spectra as well as abiotic backgrounds such as sand and mud. Benthic material were collected with an Eckman grab, where the structure and shape of the sample was retained. Samples were placed on a black neoprene mat and spectra were collected using a RAMSES spectroradiometer. The RAMSES spectroradiaometer system deployed at Wallis Lake consisted of two cosine collector sensors measuring downwelling irradiance (Ed) and one radiance collector measuring upwelling radiance (Lu). In situ spectral reflectance of intertidal and supratidal vegetation were collected with an ASD-FR FieldSpec Pro spectroradiometer system which measures over a range of 325 to 2500 nm. To fill in data gaps, additional supratidal substratum spectra were collected in September 2008 with an ASD FieldSpec Pro HandHeld spectroradiometer (www.asdi.com). Substratum irradiance reflectance was calculated as the ratio of the upwelling radiance (Lu) and the downwelling irradiance (Ed): Rsub = Lu/Ed Thus the substratum reflectance is a measure of the reflection of light from the target irrespective of the illumination quantity. All measurements were collected close to the target with a 5° fore-optic fitted to the optical fibre, limiting the instrument field of view (FOV) to that of the only the target. This was done to ensure that only pure end-member spectra were collected. Ed was defined by a spectralon panel at the same distance as the selected target. Above-water spectra were collected with the foreoptic mounted in a standard pistol-grip enabling accurate pointing of the fibre within its FOV boundaries. Reference spectra from the spectralon panel were collected at frequent intervals to compensate for the effects of variable atmospheric conditions on natural irradiance. Field spectral reflectance values were corrected for irradiance variations, assuming a linear change in irradiance over time, using these reference spectra. Data collected during this field campaign included: - Inherent optical properties (IOP) and apparent optical properties (AOP) measurements of water quality in representative waters of Wallis Lake and rivers _ Reflectance measurements of seagrasses, algae and mud/sand collected with a RAMSES - field spectrometer - GPS depth transect across Posidonia beds on the eastern boundary of Wallis Island. - A pseudo invariant feature (PIF) measurement on the Wallis Island airstrip was collected to assist in the atmospheric correction of the 2003 Quickbird imagery which had exhibited significant calibration issues and could not be successfully corrected for atmospheric effects by standard methodologies undertaken by CSIRO. The reflectance values collected at the airstrip was assumed to represent reflectance at the time when the satellite image was collected. - Terrestrial reflectance spectra of saltmarsh and mangrove species as well as other key species present were collected with an ASD field spectrometer for inclusion in the spectral library as well as for validation purposes.
    Keywords: Australia; Event label; File content; File size; Latitude of event; Longitude of event; MULT; Multiple investigations; Regatta_Island; Snake_Island; Uniform resource locator/link to image; Uniform resource locator/link to raw data file; Wallamba; Wallis_Island; Wallis_Lake; Wallis_Lake_terr
    Type: Dataset
    Format: text/tab-separated-values, 28 data points
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    DATA PANGAEA
Close ⊗
This website uses cookies and the analysis tool Matomo. More information can be found here...