Bibliothek

X
feed icon rss

Ihre E-Mail wurde erfolgreich gesendet. Bitte prüfen Sie Ihren Maileingang.

Leider ist ein Fehler beim E-Mail-Versand aufgetreten. Bitte versuchen Sie es erneut.

Vorgang fortführen?

Exportieren
Filter
  • 1985-1989  (7)
Datenquelle
Materialart
Erscheinungszeitraum
Jahr
  • 1
    Digitale Medien
    Digitale Medien
    DNA marker analysis detects multiple maternity and paternity in single broods of the lesser snow goose (1987)
    [s.l.] : Nature Publishing Group
    Nature 326 (1987), S. 392-394 
    Details
    ISSN: 1476-4687
    Quelle: Nature Archives 1869 - 2009
    Thema: Biologie , Chemie und Pharmazie , Medizin , Allgemeine Naturwissenschaft , Physik
    Notizen: [Auszug] Table 1 Genotypes of nest attendants and goslings of four lesser snow goose families DNA marker DQSG1-AI DQSG1-AII DQSG1-CI DQSG5-BI DQSG5-BH DQSG5-BIU DQSG6-AIS DQSG7-BI DQSG7-BII DQSG7-BIII DQSG8-BI DQSG8-BII DQSG8-DI ...
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1038/326392a0
    Bibliothek Standort Signatur Band/Heft/Jahr Verfügbarkeit
    BibTip Andere fanden auch interessant ...
    Artikel (Nationallizenzen)
    Volltext
  • 2
    Digitale Medien
    Digitale Medien
    Stimulation of extracellular protein production in Bacillus brevis 47 (1989)
    Springer
    Applied microbiology and biotechnology 31 (1989), S. 338-341 
    Details
    ISSN: 1432-0614
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Biologie , Werkstoffwissenschaften, Fertigungsverfahren, Fertigung
    Notizen: Summary Bacillus brevis 47 was cultivated in 2-1 fermentors to study the effect of medium supplementation on extracellular protein production. Additional polypeptone, when supplied initially or at 12 h (late exponential phase), had little stimulatory effect on extracellular protein levels, which reached 6–7 g/l after 48h. A large increase in protein production was observed, however, when polypeptone was added at 21 h (stationary phase). This addition resulted in the accumulation in the medium of 14 g/l protein after 48 h, and a total of 16 g/l when cell-bound protein was included. In all cases, glucose was consumed only very slowly.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF00257600
    Bibliothek Standort Signatur Band/Heft/Jahr Verfügbarkeit
    BibTip Andere fanden auch interessant ...
    Artikel (Nationallizenzen)
    Volltext
  • 3
    Digitale Medien
    Digitale Medien
    Continuous alpha-amylase production using Bacillus amyloliquefaciens adsorbed on an ion exchange resin (1988)
    Springer
    Applied microbiology and biotechnology 28 (1988), S. 8-13 
    Details
    ISSN: 1432-0614
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Biologie , Werkstoffwissenschaften, Fertigungsverfahren, Fertigung
    Notizen: Summary A method for the continuous production of extracellular alpha amylase by surface immobilized cells of Bacillus amyloliquefaciens NRC 2147 has been developed. A large-pore, macroreticular anionic exchange resin was capable of initially immobilizing an effective cell concentration of 17.5 g DW/1 (based on a total reactor volume of 160 ml). The reactor was operated continuously with a nutrient medium containing 15 g/l soluble starch, as well as yeast extract and salts. Aeration was achieved by sparging oxygen enriched air into the column inlet. Fermentor plugging by cells was avoided by periodically substituting the nutrient medium with medium lacking in both soluble starch and yeast extract. This fermentor was operated for over 200 h and obtained a steady state enzyme concentration of 18700 amylase activity units per litre (18.7 kU/l), and an enzyme volumetric productivity of 9700 amylase activity units per litre per hour (9.7 kU/l-h). Parallel fermentations were performed using a 2 l stirred vessel fermentor capable of operation in batch and continuous mode. All fermentation conditions employed were identical to those of the immobilized cell experiments in order to assess the performance of the immobilized cell reactor. Batch stirred tank operation yielded a maximum amylase activity of 150 kU/l and a volumetric productivity of 2.45 kU/l-h. The maximum cell concentration obtained was 5.85 g DW/l. Continuous stirred tank fermentation obtained a maximum effluent amylase activity of 6.9 kU/l and a maximum enzyme volumetric productivity of 2.73 kU/l-h. Both of these maximum values were observed at a dilution rate of 0.345 l/h. The immobilized cell reactor was observed to achieve larger volumetric productivities than either mode of stirred tank fermentation, but achieved an enzyme activity concentration lower than that of the batch stirred tank fermentor.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF00250489
    Bibliothek Standort Signatur Band/Heft/Jahr Verfügbarkeit
    BibTip Andere fanden auch interessant ...
    Artikel (Nationallizenzen)
    Volltext
  • 4
    Digitale Medien
    Digitale Medien
    Isolation and characterization of an α-satellite repeated sequence from human chromosome 22 (1986)
    Springer
    Chromosoma 94 (1986), S. 228-234 
    Details
    ISSN: 1432-0886
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Biologie , Medizin
    Notizen: Abstract We constructed a library in λIL47.1 with DNA isolated from flow-sorted human chromosome 22. Over 50% of the recombinants contained the same highly repetitive sequence. When this sequence was used to probe Southern blots of EcoRI-digested genomic DNA, a ladder of bands with increments of about 170 bp was observed. This sequence comigrates with satellite III in Ag+/Cs2SO4 gradients and may account for at least part of the 170 bp Hae III ladder seen in isolated satellite III DNA. Partial sequence analysis revealed homology to the 171 bp monomeric repeat unit of α-R1-DNA and the X specific α-satellite consensus sequence. After low stringency in situ hybridization, silver grains were found over the centromeres of a number of chromosomes. Under high stringency conditions, however, the labeling was concentrated over the centromeric region of chromosome 22. This localization was confirmed using DNA from a panel of human/hamster cell lines which showed that the homologous 2.1 and 2.8 kb EcoR1 restriction fragments were chromosome 22 specific. These clones therefore contain chromosome 22 derived α-satellite sequences analogous to other chromosome-specific satellite sequences described previously.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF00288497
    Bibliothek Standort Signatur Band/Heft/Jahr Verfügbarkeit
    BibTip Andere fanden auch interessant ...
    Artikel (Nationallizenzen)
    Volltext
  • 5
    Digitale Medien
    Digitale Medien
    Linkage analysis of seven kindreds with the X-linked lymphoproliferative syndrome (XLP) confirms that the XLP locus is near DXS42 and DXS37 (1989)
    Springer
    Human genetics 〈Berlin〉 82 (1989), S. 354-358 
    Details
    ISSN: 1432-1203
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Biologie , Medizin
    Notizen: Summary Analysis of seven kindreds indicates that the XLP locus exhibits 1% recombination with DXS42 (lod = 17.5) and no recombination with DXS37 (lod = 13.3).
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF00273997
    Bibliothek Standort Signatur Band/Heft/Jahr Verfügbarkeit
    BibTip Andere fanden auch interessant ...
    Artikel (Nationallizenzen)
    Volltext
  • 6
    Digitale Medien
    Digitale Medien
    A DNA marker closely linked to the factor IX (haemophilia B) gene (1987)
    Springer
    Human genetics 〈Berlin〉 75 (1987), S. 381-383 
    Details
    ISSN: 1432-1203
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Biologie , Medizin
    Notizen: Summary We have isolated a DNA segment, pX58dIIIc, from an X-chromosome library which identifies an SstI restriction fragment length polymorphism (RFLP) at locus DXS99. Linkage analysis in six informative families has shown that the DXS99 locus lies close to the factor IX gene (F9). No recombination was detected between these loci in 39 informative meioses (Z=9.79, θ=0.0). Therefore, DXS99 will be useful as a DNA marker for the assessment of carrier status in families with haemophilia B where intragenic markers are not informative. Heterozygosity at DXS99 is approximately 50% and, in conjunction with the RFLPs at F9, 90% of females at risk for being haemophilia B carriers should be diagnosed.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF00284113
    Bibliothek Standort Signatur Band/Heft/Jahr Verfügbarkeit
    BibTip Andere fanden auch interessant ...
    Artikel (Nationallizenzen)
    Volltext
  • 7
    Digitale Medien
    Digitale Medien
    Organization of a repetitive human 1.8 kb KpnI sequence localized in the heterochromatin of chromosome 15 (1985)
    Springer
    Chromosoma 93 (1985), S. 77-86 
    Details
    ISSN: 1432-0886
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Biologie , Medizin
    Notizen: Abstract We have isolated a repetitive 1.8 kb Kpnl DNA sequence which is amplified in the homogeneously staining regions of a human melanoma cell line. Under low stringency conditions this sequence (D15Z1) hybridized in situ to the centromeric heterochromatin of chromosomes 1, 9, 15p, 16, and distal Yq as well as to the the short arms of the other acrocentric chromosomes. Under conditions of high stringency, labelling was predominantly on the short arm of chromosome 15. D15Z1 was shown to be present at approximately 3,000 copies per haploid genome and organized in long tandem arrays showing restriction site heterogeneity. Sequences homologous to D15Z1 were highly enriched in the less dense shoulder region of a Ag+—Cs2SO4 gradient. Analysis of D15Z1 indicated that this sequence is composed of tandemly arranged imperfect repeats of the consensus 5′ AATGG 3′ similar to previously identified satellite III sequences. Digestion of D15Z1 with HinfI resulted in a series of restriction fragments making up a subset of the HinfI ladder components of satellites III and IV. These data suggest that D15Z1 represents a chromosome 15 specific domain of human satellites III or IV and that it makes up the major fraction of the heterochromatin of this chromosome. Possible relationships between this sequence and the cytochemical staining properties of human chromosomes with distamycin A/DAPI, D280/170, and antiserum to 5-methylcytosine are discussed.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF01259449
    Bibliothek Standort Signatur Band/Heft/Jahr Verfügbarkeit
    BibTip Andere fanden auch interessant ...
    Artikel (Nationallizenzen)
    Volltext
Schließen ⊗
Diese Webseite nutzt Cookies und das Analyse-Tool Matomo. Weitere Informationen finden Sie hier...