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
  • 1
    facet.materialart.
    Unknown
    Measurement of J/Ψ production in pp collisions at $sqrt{s}=7$ TeV (2011)
    Springer
    Details
    Publication Date: 2011-05-01
    Print ISSN: 1434-6044
    Electronic ISSN: 1434-6052
    Topics: Physics
    Published by Springer
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    PAPER CURRENT
  • 2
    Electronic Resource
    Electronic Resource
    Hydrodynamic and chemical conditions during onset of a red-tide assemblage in an estuarine upwelling ecosystem (1998)
    Springer
    Marine biology 130 (1998), S. 509-519 
    Details
    ISSN: 1432-1793
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract The hydrodynamics and nitrogen/silicon biogeochemistry accompanying the development of a red-tide assemblage were examined in the Ría de Vigo (northwest Spain), a coastal embayment affected by upwelling, during an in situ diel experiment in September 1991. Despite a low N:Si molar ratio (0.5) of nutrients entering the surface layer, which was favourable for diatom growth, the diatom population began to decline. Limited N-nutrient input, arising from moderate coastal upwelling in a stratified water column, restricted net community production (NCP = 630 mg C m−2 d−1). In addition, light-limitation of gross primary production (GPP = 1525 mg C m−2 d−1) was observed. The relatively high f-ratio (= NCP:GPP) recorded (0.41, characteristic of intense upwelling conditions) would have been as low as 0.15 had not GPP been limited by light intensity. Temporal separation of carbohydrate synthesis during the photoperiod from protein synthesis in the dark could be inferred from the time-course of the C:N ratio of particulate organic matter. Severe light-limitation would lead to diatom collapse were the diatoms not able to meet all their energy requirements during the hours of darkness. Under the hydrodynamic, nutrient and light conditions of the experiment, an assemblage of red-tide-forming species began to develop, aided by their ability to migrate vertically and to synthesize carbohydrates during the light in surface waters and protein during the dark at the 4 m-deep pycnocline. Thermal stratification, reduced turbulence, intense nutrient mineralization, and the limited nitrogen input through moderate upwelling were all favourable to the onset of a red-tide assemblage.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s002270050271
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 3
    Electronic Resource
    Electronic Resource
    Eight-hour PCR-based procedure for the detection of Salmonella in raw oysters (2005)
    Oxford, UK : Blackwell Publishing Ltd
    FEMS microbiology letters 243 (2005), S. 0 
    Details
    ISSN: 1574-6968
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Biology
    Notes: The aim of this study was to evaluate the ability of a nested PCR system to detect Salmonella senftenberg in raw oysters. The specific primers of the PCR were derived from the invA gene sequence, essential for Salmonella invasiveness into epithelial cells. First, for the extraction of DNA, four methods (guanidine isothiocyanate, E.Z.N.A. Mollusc Kit, Chelex®-100, and lysis with detergents) were compared. A nested PCR method combined with 3.5 h pre-enrichment in buffered peptone water (BPW) and DNA extraction by the resin Chelex®-100 is proposed for the detection of S. senftenberg in oyster samples. The detection limit of the method is less than 0.1 CFU/ml (〈1 CFU/g of oyster). This procedure is shown to be an excellent tool for the sensitive detection of S. senftenberg from naturally contaminated oysters, with results being obtained within 8 h.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1016/j.femsle.2004.12.016
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 4
    Electronic Resource
    Electronic Resource
    Incidence of Yersinia ruckeri in two farms in Galicia (NW Spain) during a one-year period (1994)
    Oxford, UK : Blackwell Publishing Ltd
    Journal of fish diseases 17 (1994), S. 0 
    Details
    ISSN: 1365-2761
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Biology , Medicine
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1365-2761.1994.tb00249.x
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 5
    Electronic Resource
    Electronic Resource
    Detection of Xanthomonas campestris pv. undulosa infested wheat seeds by combined liquid medium enrichment and ELISA (1994)
    Oxford, UK : Blackwell Publishing Ltd
    Plant pathology 43 (1994), S. 0 
    Details
    ISSN: 1365-3059
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: An enzyme-linked immunosorbent assay (ELISA) was standardized for detecting Xanthomonas campestris pv. undulosa (Xcu) in plant tissues. Antiserum prepared against somatic antigens of Xcu reacted with cells of pathovars undulosa, cerealis, translucens and phleipratensis, but not with other bacterial species belonging to the genera Xanthomonas, Pseudomonas, Agrobacterium, Clavibacter, and Erwinia. The lower limit of detection of pure cultures was 5 × 103 cfu/ml. A semi-selective enrichment broth (SSEB) improved the recovery of Xcu in cultures mixed with contaminating bacteria commonly found on wheat seeds. In ELISA tests the enriched samples gave two- to three-fold increases in A405nm readings when viable cells of Xcu were present. By enrichment, X. campestris pathovars undulosa, cerealis, translucens and phleipratensis were detected in samples that originally had less than 5 × 102 cfu/ml. Semi-selective enrichment combined with ELISA (SSEB-ELISA) allowed for determination of the percentages of infestation of wheat seed lots. Potential seedling infection (PSI) of naturally infested wheat seed lots was obtained by growing seed samples in the greenhouse under conditions optimal for disease development. Three methods were evaluated for their capacity to estimate the PSI: ELISA, combined SSEB and ELISA, and direct plating onto semi-selective XTS agar. Percentages of seed infestation determined by combined SSEB and ELISA resulted in a highly significant correlation with the PSI (r = 0·87, P× 005), whereas determinations made by ELISA or direct plating onto XTS did not significantly correlate with the PSI determined in the greenhouse. This test may constitute a convenient tool for fast initial screening of wheat seed lots in wheat certification programmes.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1365-3059.1994.tb01594.x
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 6
    Electronic Resource
    Electronic Resource
    Evaluation of media for the successful culture of Flexibacter maritimus (1996)
    Oxford, UK : Blackwell Publishing Ltd
    Journal of fish diseases 19 (1996), S. 0 
    Details
    ISSN: 1365-2761
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Biology , Medicine
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1365-2761.1996.tb00701.x
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 7
    Electronic Resource
    Electronic Resource
    From epistemology toGnoseology: Foundations of the knowledge industry (1992)
    Springer
    AI & society 6 (1992), S. 140-165 
    Details
    ISSN: 1435-5655
    Keywords: Knowledge industry ; Inference ; Abduction ; Commonsense knowledge ; Circumscription ; Mindfacturing
    Source: Springer Online Journal Archives 1860-2000
    Topics: Computer Science
    Notes: Abstract In this paper, the foundations for setting up a knowledge industry are laid. Firstly, it is established that this industry constitutes the only way of making use of the huge amounts of knowledge produced as a result of the introduction of the Science-Technology binomial in postindustrial society. Then, the elements which will lead to such an industry are defined, that is, the resources and means. Under the ‘Means’ section, special emphasis is placed on the processes involved, in other words, inference methods and commonsense reasoning. Finally, it is concluded that the establishment of this industry, calledmindfacturing because of the raw material that it processes and uses, is, more than possible, desirable, provided that the precautions outlined in the epilogue are taken.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02472778
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 8
    Electronic Resource
    Electronic Resource
    HighT c superconductive materials: Bulk or twinned domain/grain boundary percolative network superconductors? (1988)
    Springer
    The European physical journal 70 (1988), S. 9-13 
    Details
    ISSN: 1434-6036
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract We have studied the physical properties of Y−Ba−Cu−Oxide superconducting materials by using Levitation, AC-susceptibility, macroscopic conductivity, Scanning Tunneling Microscopy (STM) local conductivity, Scanning Electron Microscope (SEM), X-rays, and Hall effect experimental techniques. Our results tend to indicate systematically that the grains formed in the synthesis do not show bulk superconductivity but rather are superconductors at the domain boundaries of the orthorhombic phase. It seems that a coexistence of semiconductor and metallic regions are formed at the twinned domain boundaries. The pellets become superconductors when the grains form clusters and are in intimate contact. This seems to suggest that the bulk of the grains is semiconducting and that a conducting percolative network of grain and domain boundaries may be responsible for the superconductivity. To understand the observed constant high transition temperature we propose a model of semiconductor-metal-semiconductor boundaries that give rise to superconductivity in a model like that of Little, Ginzburg, and Allender-Bray-Bardeen (1).
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01320531
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 9
    Electronic Resource
    Electronic Resource
    Influence of the gametogenic cycle on the biochemical composition of the ovary of the great scallop (1996)
    Springer
    Aquaculture international 4 (1996), S. 201-213 
    Details
    ISSN: 1573-143X
    Keywords: Biochemical composition ; Gametogenesis ; Great scallop (Pecten maximus) ; Lipids
    Source: Springer Online Journal Archives 1860-2000
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: The oogenic cycle and biochemical composition of the ovary of raft-cultured great scallop (Pecten maximus) were studied during the period April 1990–July 1991. The ovary condition index (FGI) and stereological studies showed the existence of two principal spawning periods, winter and late spring-early summer. No sexual resting period was found. Oocyte lysis was high throughout the year. Ovarian lipid levels displayed a clear seasonal pattern linked to the gametogenic cycle. Total lipid (TL, 16–21% dry weight), acylglycerol (AG, 20–65% TL) and free sterol (FS, 2.8–6.4% TL) levels were, generally, higher in the ripe ovary and a decrease coincided with spawning. Protein (59–63% dry weight), glycogen (〈3% dry weight) and phospholipid (PL, 26–35% TL) levels showed no clear seasonal trend. The TL and AG were a good index of ovarian sexual maturity. The TL % of dry weight) correlated well with the female gonad condition index (r s = 0.779, p 〈 0.001), and AG (% f TL) correlated well with the mean oocyte diameter (r s = 0.630, p 〈 0.01) and the female gonad condition index (r s = 0.443, p 〈 0.05).
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00117382
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 10
    Electronic Resource
    Electronic Resource
    Kinetics and Mechanism of St I Modification by Peroxyl Radicals (1999)
    Springer
    The protein journal 18 (1999), S. 297-306 
    Details
    ISSN: 1573-4943
    Keywords: Toxin ; Sticholysin ; peroxyl radicals ; hemolytic activity
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Notes: Abstract St I is a toxin present in the Caribbean Sea anemone Stichodactyla helianthus which is highly hemolytic in the nanomolar concentration range. Exposure of the toxin to free radicals produced in the pyrolysis of 2,2′-azobis(2-amidinopropane) hydrochloride leads to a progressive loss of hemolytic activity. This loss of hemolytic activity is accompanied by extensive modification of tryptophan residues. On the average, three tryptophan residues are modified by each inactivated toxin. The loss of hemolytic activity of St I takes place without significant changes in the protein structure, as evidenced by the similarity of the fluorescence and CD spectra of native and modified proteins. Also, the native and modified ensembles present a similar resistance to their denaturation by guanidinium chloride. The hemolytic behavior and the performance of the toxin at the single-channel level when incorporated to black lipid membranes suggest that the modified ensemble can be considered as composed of inactive toxins and active toxins whose behavior is similar to that of the native proteins. These results, together with the lack of induction time in the activity loss, suggest that the fall of hemolytic activity takes place by an all-or-nothing inactivation mechanism in which the molecules become inactive when a critical amino acid residue is modified.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1023/A:1021087312176
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
Close ⊗
This website uses cookies and the analysis tool Matomo. More information can be found here...