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  • Electronic Resource  (9)
  • 1995-1999  (5)
  • 1990-1994  (4)
  • 1
    Electronic Resource
    Electronic Resource
    Photosynthesis-irradiance relationships in natural phytoplankton populations of the Barents Sea (1991)
    Oxford, UK : Blackwell Publishing Ltd
    Polar research 10 (1991), S. 0 
    Details
    ISSN: 1751-8369
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Geography , Geosciences
    Notes: An analysis is made of the photosynthesis-irradiance relationships in natural phytoplankton populations in the Barents Sea. The data set comprises 232 experiments carried out during a 10-year period, both in open and ice-covered waters. The variability on the P-I parameters is discussed and examined in relation to the variation in a variety of environmental conditions. The results suggest that in the Barents Sea, as in other Arctic areas, phytoplankton photosynthesis is mainly controlled by physical variables. However, control of the phytoplankton stock, i.e. by zooplankton grazing, seems also to have a considerable indirect influence on P-I parameters, especially after the spring bloom and the depletion of winter nutrients.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1751-8369.1991.tb00638.x
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  • 2
    Electronic Resource
    Electronic Resource
    A Working Method Approach for Introductory Physical Chemistry Calculations by Brian Murphy, Clair Murphy, and Brian J. Hathaway (1998)
    Springer
    The chemical educator 3 (1998), S. 1-2 
    Details
    ISSN: 1430-4171
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s00897980208a
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  • 3
    Electronic Resource
    Electronic Resource
    Genetic mapping of 1,3-β-glucanase-encoding genes in Saccharomyces cerevisiae (1992)
    Springer
    Current genetics 22 (1992), S. 283-288 
    Details
    ISSN: 1432-0983
    Keywords: 1,3-β-glucanase genes ; Saccharomyces cerevisiae ; Chromosomal mapping ; Genetic mapping
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Summary The map position of three 1,3-β-glucanase-encoding genes in S. cerevisiae has been determined following conventional meiotic and mitotic mapping combined with recombinant DNA techniques. EXG1, EXG2 and SSG1 were localized to chromosomes XII, IV and XV, respectively, by hybridizing the cloned genes to Southern blots of chromosomes sepaated by pulsed-field gel electrophoresis, in conjunction with the rad52-1-dependent chromosome-loss mapping technique. Meiotic tetrad analyses further localized the EXG1 gene 6.1 centimorgans centromere-proximal to CDC25 on the right arm of chromosome XII. EXG2 was positioned between LYS4 and GCN2 on the right arm of chromosome IV, at distances of 6.2 centimorgans from LYS4 and 4.9 centimorgans from GCN2. Finally, the SSG1 locus mapped on the right arm of chromosome XV, about 8.2 centimorgans to the centromere-proximal side of HIS3.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00317922
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  • 4
    Electronic Resource
    Electronic Resource
    Study of the acid-base properties of leaf litter extracts (1998)
    Springer
    Fresenius' journal of analytical chemistry 361 (1998), S. 479-486 
    Details
    ISSN: 1432-1130
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Notes: Abstract The acid-base properties of four leaf litter extracts, LLE (eucalyptus, fern, oak and chestnut coverture), were characterized by synchronous fluorescence (SyF) spectroscopy and compared with those of two fulvic acids (FA) extracted from two different horizons (0–5 and 5–15 cm) of an oak forest soil. The characterization was based on the variation with the pH of the properties of the fluorescent structures present in the samples, which function as probes and provide a macroscopic image of their acid-base properties. These sets of SyF spectra collected as a function of the pH show fingerprinting potential. They were treated by a self-modeling curve resolution procedure, evolving factor analysis with a gradient concentration window (EFA-GCW), to reduce the raw spectral data to the number of components, their spectra, and SyF intensity profiles (pH distribution diagrams). Four acid-base systems were detected for all samples of LLE and FA with pKas ranging from 2.5 to 10.0 (pKas about 3, 5, 7 and 9, except for the fern LLE sample which showed pKas about 5, 7, 9 and 10). A similarity analysis of the spectra of the components, performed by cluster analysis, showed that the most acidic fluorescent structures of the LLE are not similar to those of the soil FA, but the less acidic are.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s002160050929
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  • 5
    Electronic Resource
    Electronic Resource
    Study of the effects of concentration and pH on the dissociation kinetics of Fe(II)-fulvic acid complexes (1998)
    New York, NY : Wiley-Blackwell
    International Journal of Chemical Kinetics 30 (1998), S. 63-67 
    Details
    ISSN: 0538-8066
    Keywords: Chemistry ; Physical Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: The effects of reagent concentration and the pH in the kinetic behavior of the dissociation of Fe(II)-fulvic acid complexes were studied using a spectrophotometric technique. The results show that this behavior is not strongly affected by the concentration of fulvic acid, the concentration of the metal cation on the ratio of these concentrations and that variations in pH are more important in the dissociation process. A possible explanation based in the relative influence of proton concentration on the stability of the complexes is proposed. © 1998 John Wiley & Sons, Inc. Int J Chem Kinet: 30: 63-67,1998.
    Additional Material: 3 Ill.
    Type of Medium: Electronic Resource
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  • 6
    Electronic Resource
    Electronic Resource
    The complete sequence of a 15 820 bp segment of Saccharomyces cerevisiae chromosome XI contains the UBI2 and MPL1 genes and three new open reading frames (1993)
    New York, NY [u.a.] : Wiley-Blackwell
    Yeast 9 (1993), S. 1349-1354 
    Details
    ISSN: 0749-503X
    Keywords: Saccharomyces cerevisiae ; chromosome XI ; UBI2 ; MPLI ; ORF ; myosin ; USO1 ; Nopp140 ; membrane protein ; Life and Medical Sciences ; Genetics
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Biology
    Notes: As part of the EEC yeast genome program, a fragment of 15 820 bp from the right arm of Saccharomyces cerevisiae chromosome XI has been sequenced. This fragment corresponds roughly to the centromere-distal half of cosmid pUKG046 and to a small fragment of cosmid pUKG096, which are located approximately 150 kb from the centromere. It contains four open reading frames (ORFs) which encode potential proteins of more than 100 amino acid residues, as well as the UBI2 gene which carries an intron and does not show up as an ORF in the sequence analysis programs. One of the putative proteins, YKR412, is very rich in serine and has significant homology at the carboxyl end to Nopp140 phosphoprotein. YKR413 has several predicted transmembrane domains. YKR15, which has been recently cloned as the MPL1 gene, encodes a polypeptide that shows homologies to myosin heavy chain and to the cytoskeleton protein Uso1.
    Additional Material: 5 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/yea.320091209
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  • 7
    Electronic Resource
    Electronic Resource
    The sequence of a 20·3 kb DNA fragment from the left arm of Saccharomyces cerevisiae chromosome IV contains the KIN28, MSS2, PHO2, POL3 and DUN1 genes, and six new open reading frames (1996)
    New York, NY [u.a.] : Wiley-Blackwell
    Yeast 12 (1996), S. 1077-1084 
    Details
    ISSN: 0749-503X
    Keywords: Saccharomyces cerevisiae ; genome sequencing ; chromosome IV ; KIN28 ; MSS2 ; PHO2 ; POL3 ; DUN1 ; Life Sciences ; Life Sciences (general)
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Biology
    Notes: We report the sequence of a 20 300 bp DNA fragment from the left arm of Saccharomyces cerevisiae chromosome IV. This segment contains 13 complete open reading frames (ORFs) and part of another ORF, altogether covering 84·2% of the entire sequence, five of which correspond to the previously characterized KIN28, MSS2, PHO2, POL3/CDC2 and DUN1 genes. One putative protein, D2358p, shares considerable homology with an O-sialoglycoprotein endopeptidase from Pasteurella haemolytica serotype A1. The putative product of D2325 contains the characteristic consensus motif of triacylglycerol lipases. D2320p and D2352p have a putative ‘leucine-zipper’ structure and a RNA-binding region Rnp-1 signature, respectively. The sequence data have been submitted to EMBL data library under Accession Number X95644.
    Additional Material: 3 Ill.
    Type of Medium: Electronic Resource
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    Paper (German National Licenses)
  • 8
    Electronic Resource
    Electronic Resource
    XI. Yeast sequencing reports. The complete sequence of an 18,002 bp segment of Saccharomyces cerevisiae chromosome XI contains the HBS1, MRP-L20 and PRP16 genes, and six new open reading frames (1994)
    New York, NY [u.a.] : Wiley-Blackwell
    Yeast 10 (1994), S. 231-245 
    Details
    ISSN: 0749-503X
    Keywords: Saccharomyces cerevisiae ; genome sequencing ; chromosome XI ; HBS1 ; MRP-L20 ; PRP16 ; Life and Medical Sciences ; Genetics
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Biology
    Notes: We report the sequence of an 18,002 bp DNA fragment from the right arm of Saccharomyces cerevisiae chromosome XI. This segment contains nine complete open reading frames (ORFs), YKR401 to YKR409, and part of another ORF, YKR400, covering altogether 87·2% of the entire sequence. One of them, YKR400, encodes an NAD-dependent 5,10-methylene-tetrahydrofolate dehydrogenase. YKR404, YKR405 and YKR406 correspond to the previously characterized HBS1, MRP-L20 and PRP16 genes, coding for a translation elongation factor, a mitochondrial ribosomal protein and an ATP-binding protein, respectively. The putative product of YKR407 contains the zinc-binding region signature of neutral zinc metallopeptidases. The five other ORFs do not show significant homology to any known protein. The sequence data reported here have been assigned EMBL accession number Z27116.
    Additional Material: 8 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/yea.320100210
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  • 9
    Electronic Resource
    Electronic Resource
    The sequence of a 21·3kb DNA fragment from the left arm of yeast chromosome XIV reveals LEU4, MET4, POL1, RAS2, and six new open reading frames (1996)
    New York, NY [u.a.] : Wiley-Blackwell
    Yeast 12 (1996), S. 403-409 
    Details
    ISSN: 0749-503X
    Keywords: Saccharomyces cerevisiae ; chromosome XIV ; LEU4 ; MET4 ; POL1 ; RAS2 ; inositol-1,4,5-trisphosphate 5-phosphatase ; Lowe's syndrome ; Life Sciences ; Life Sciences (general)
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Biology
    Notes: The nucleotide sequence of a fragment of 21 308 bp from the left arm of Saccharomyces cerevisiae chromosome XIV has been determined. Analysis of the sequence revealed 13 open reading frames (ORFs) longer than 300 bp, four of which correspond to the previously identified genes LEU4, MET4, POL1 and RAS2. One putative protein, N2160, shares considerable homology (32% identity) with a hypothetical protein encoded by a gene located on chromosome XV as well as with human OCRL protein (36% identity), involved in Lowe's syndrome. N2185 contains ten predicted transmembrane segments and is similar to another putative protein (YKL146) from yeast. The sequence of the reported DNA fragment has been submitted to the EMBL data library under Accession Number Z50161.
    Additional Material: 5 Ill.
    Type of Medium: Electronic Resource
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