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  • 1
    Monograph available for loan
    Monograph available for loan
    Wavelets : algorithms and applications (1993)
    Philadelphia : Soc. for Industrial and Applied Mathematics
    Details Availability
    Call number: M 93.1056
    Type of Medium: Monograph available for loan
    Pages: XI, 133 S.
    ISBN: 0898713099
    Uniform Title: Ondelettes
    Classification:
    C.1.6.
    Language: English
    Location: Upper compact magazine
    Branch Library: GFZ Library
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  • 2
    Monograph available for loan
    Monograph available for loan
    Progress in wavelet analysis and applications : proceedings of the International Conference "Wavelets and Applications", Toulouse, France, June 1992 (1993)
    Gif-sur-Yvette Cedex, France : Editions Frontieres
    Details Availability
    Call number: M 93.0936
    Type of Medium: Monograph available for loan
    Pages: xv, 785 S.
    ISBN: 2863321307
    Classification:
    C.1.8.
    Language: English
    Location: Upper compact magazine
    Branch Library: GFZ Library
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  • 3
    Monograph available for loan
    Monograph available for loan
    Wavelets and operators (1992)
    Cambridge : Cambridge Univ. Press
    Associated volumes
    Details Availability
    Call number: M 94.0013 ; PIK Q 200-00-0142
    In: Cambridge studies in advanced mathematics
    Type of Medium: Monograph available for loan
    Pages: XV, 223 S.
    ISBN: 0521420008
    Series Statement: Cambridge studies in advanced mathematics 37
    Classification:
    C.1.6.
    Language: English
    Location: Upper compact magazine
    Location: A 18 - must be ordered
    Branch Library: GFZ Library
    Branch Library: PIK Library
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  • 4
    Unknown
    Algebraic Numbers and Harmonic Analysis (1972)
    Amsterdam ; New York : North-Holland
    Details
    Pages: Online-Ressource (x, 274 pages)
    ISBN: 9780444103574
    URL: http://www.sciencedirect.com/science/publication?issn=09246509&volume=2
    Language: English
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  • 5
    Electronic Resource
    Electronic Resource
    Basic chitinases are correlated with the morphogenic response of flax cells (1998)
    Copenhagen : Munksgaard International Publishers
    Physiologia plantarum 103 (1998), S. 0 
    Details
    ISSN: 1399-3054
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Biology
    Notes: Flax (Linum usitatissimum) hypocotyl protoplasts immobilized in a calcium-alginate matrix give rise to embryo-like structures. A direct correlation was established between the presence of a set of ionically-bound cell wall proteins, which includes the basic polypeptides P184 and P183 with an apparent molecular mass of 25 kDa, and this morphogenic response. Microsequencing of tryptic fragments from P184 and P183 indicated homologies with the chitinase family. These homologies were confirmed by demonstrating that, after renaturation, such proteins express a potential chitinase activity in SDS-PAGE gel containing glycol chitin as synthetic substrate. Using degenerate primers from P184 internal sequences, we isolated one partial genomic sequence of a chitinase of 626 bp from which a putative 74-amino acid sequence, disrupted by one intron, was deduced. High degrees of homology with several plant chitinases, including those expressed during somatic embryogenesis or in seeds, were observed. P184 microsequences match the corresponding sequence deduced from the chitinase PCR-fragment perfectly.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1034/j.1399-3054.1998.1030215.x
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  • 6
    Electronic Resource
    Electronic Resource
    Wavelets, generalized white noise and fractional integration: The synthesis of fractional Brownian motion (1999)
    Springer
    The journal of Fourier analysis and applications 5 (1999), S. 465-494 
    Details
    ISSN: 1531-5851
    Keywords: Fractional ARIMA ; midpoint displacement technique ; fractional Gaussian noise ; fractional derivative ; generalized functions ; self-similarity ; Primary 60G18 ; secondary 41A58 ; 60F15.
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mathematics
    Notes: Abstract We provide an almost sure convergent expansion of fractional Brownian motion in wavelets which decorrelates the high frequencies. Our approach generalizes Lévy's midpoint displacement technique which is used to generate Brownian motion. The low-frequency terms in the expansion involve an independent fractional Brownian motion evaluated at discrete times or, alternatively, partial sums of a stationary fractional ARIMA time series. The wavelets fill in the gaps and provide the necessary high frequency corrections. We also obtain a way of constructing an arbitrary number of non-Gaussian continuous time processes whose second order properties are the same as those of fractional Brownian motion.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01261639
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  • 7
    Electronic Resource
    Electronic Resource
    The Presence of GSI-Like Genes in Higher Plants: Support for the Paralogous Evolution of GSI and GSII Genes (2000)
    Springer
    Journal of molecular evolution 50 (2000), S. 116-122 
    Details
    ISSN: 1432-1432
    Keywords: Key words: Gene families — Glutamine synthetase —Medicago truncatula— Phylogeny
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract. Glutamine synthetase type I (GSI) genes have previously been described only in prokaryotes except that the fungus Emericella nidulans contains a gene (fluG) which encodes a protein with a large N-terminal domain linked to a C-terminal GSI-like domain. Eukaryotes generally contain the type II (GSII) genes which have been shown to occur also in some prokaryotes. The question of whether GSI and GSII genes are orthologues or paralogues remains a point of controversy. In this article we show that GSI-like genes are widespread in higher plants and have characterized one of the genes from the legume Medicago truncatula. This gene is part of a small gene family and is expressed in many organs of the plant. It encodes a protein similar in size and with between 36 and 46% amino acid sequence similarity to prokaryotic GS proteins used in the analyses, whereas it is larger and with less than 25% similarity to GSII proteins, including those from the same plant species. Phylogenetic analyses suggest that this protein is most similar to putative proteins encoded by expressed sequence tags of other higher plant species (including dicots and a monocot) and forms a cluster with FluG as the most divergent of the GSI sequences. The discovery of GSI-like genes in higher plants supports the paralogous evolution of GSI and GSII genes, which has implications for the use of GS in molecular studies on evolution.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s002399910013
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  • 8
    Electronic Resource
    Electronic Resource
    Intron Position as an Evolutionary Marker of Thioredoxins and Thioredoxin Domains (1996)
    Springer
    Journal of molecular evolution 42 (1996), S. 422-431 
    Details
    ISSN: 1432-1432
    Keywords: Key words: Thioredoxins — Introns — Phylogeny
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract. In contrast to prokaryotes, which typically possess one thioredoxin gene per genome, three different thioredoxin types have been described in higher plants. All are encoded by nuclear genes, but thioredoxins m and f are chloroplastic while thioredoxins h have no transit peptide and are probably cytoplasmic. We have cloned and sequenced Arabidopsis thaliana genomic fragments encoding the five previously described thioredoxins h, as well as a sixth gene encoding a new thioredoxin h. In spite of the high divergence of the sequences, five of them possess two introns at positions identical to the previously sequenced tobacco thioredoxin h gene, while a single one has only the first intron. The recently published sequence of Chlamydomonas thioredoxin h shows three introns, two at the same positions as in higher plants. This strongly suggests a common origin for all cytoplasmic thioredoxins of plants and green algae. In addition, we have cloned and sequenced pea DNA genomic fragments encoding thioredoxins m and f. The thioredoxin m sequence shows only one intron between the regions encoding the transit peptide and the mature protein, supporting the prokaryotic origin of this sequence and suggesting that its association with the transit peptide has been facilitated by exon shuffling. In contrast, the thioredoxin f sequence shows two introns, one at the same position as an intron in various plant and animal thioredoxins and the second at the same position as an intron in thioredoxin domains of disulfide isomerases. This strongly supports the hypothesis of a eukaryotic origin for chloroplastic thioredoxin f.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/PL00006070
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  • 9
    Electronic Resource
    Electronic Resource
    Chemical inhibition of cell wall formation and cytokinesis, but not of nuclear division, in protoplasts of Nicotiana tabacum L. cultivated in vitro (1978)
    Springer
    Planta 142 (1978), S. 253-262 
    Details
    ISSN: 1432-2048
    Keywords: Cell wall formation ; Cytokinesis ; Inhibitors ; Mitosis ; Nicotiana
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract The effect of cytochalasin B, colchicine, coumarin and 2,6-dichlorobenzonitrile on cell wall formation and cellular division was studied by light and electron microscopy with tobacco mesophyll protoplasts cultivated in vitro. 2,6-dichlorobenzonitrile was found to be the most effective and reversible inhibitor of cell wall formation. The other inhibitors caused irreversible damage and/or inhibited mitosis. In protoplasts cultivated in the presence of 2,6-dichlorobenzonitrile the total inhibition of cell wall formation had no effect on nuclear division, but cytokinesis was totally inhibited so that multinucleate protoplasts were obtained.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00385074
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  • 10
    Electronic Resource
    Electronic Resource
    Cytology of budding and cleavage in tobacco mesophyll protoplasts cultivated in saline medium (1978)
    Springer
    Planta 142 (1978), S. 11-21 
    Details
    ISSN: 1432-2048
    Keywords: Budding ; Cleavage ; Mesophyll ; Protoplasts ; Tobacco
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract Tobacco (Nicotiana tabacum L., cv. Maryland) mesophyll protoplasts cultivated in saline medium divide by bud formation, migration of one nucleus into the bud, and subsequent furrowing. This process was investigated light and electron microscopically. The cytoplasm of the growing bud is richer in dictyosomes, rough endoplasmic reticulum profiles, mitochondria, and small vacuoles than is the cytoplasm of the mother cell, but in early stages lacks plastids. Only patches of wall material are found; most of the cell surface appears naked. Oriented sections of the cleavage furrow do not reveal a contractile ring of microfilaments under the fixation conditions used. The furrow is flanked by numerous microtubules, and is rich in coated vesicles. Nuclear division appears normal, but the phragmoplast vesicles appear empty, and the phragmoplast seems to disintegrate again later. The nucleus migrating into the bud does not show any signs of associated contractile structures. The results demonstrate that, in principle, higher plant cells are capable of a mode of division usually said to be “yeast-like”. The events of karyokinesis and cell plate formation are not therefore obligatorily linked processes.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00385114
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