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  • 1
    Electronic Resource
    Electronic Resource
    Measurement of interstrand cross-link frequency and distance between interruptions in DNA exposed to 4,5',8-trimethylpsoralen and near-ultraviolet light (1987)
    s.l. : American Chemical Society
    Biochemistry 26 (1987), S. 2001-2009 
    Details
    ISSN: 1520-4995
    Source: ACS Legacy Archives
    Topics: Biology , Chemistry and Pharmacology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1021/bi00381a033
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    Paper (German National Licenses)
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  • 2
    Electronic Resource
    Electronic Resource
    GROWTH AND DEVELOPMENT IN FREE-RANGING HARBOR SEAL (PHOCA VITULINA) PUPS FROM SOUTHERN BRITISH COLUMBIA, CANADA (2002)
    Oxford, UK : Blackwell Publishing Ltd
    Marine mammal science 18 (2002), S. 0 
    Details
    ISSN: 1748-7692
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Biology
    Notes: Harbor seals (Phoca vitulina) are small pinnipeds that are widely distributed throughout the temperate coastal regions of the Atlantic and Pacific oceans. We determined birth mass, neonatal growth rates, weaning age, and weaning mass of NE Pacific harbor seals (P. v. richardsi) during a capture-recapture study that spanned the nursing period (Sidney Island, British Columbia, Canada). Of 46 harbor seal pups initially captured, 28 were classified as newborns (i. e., 〈 24 h old). Mean body mass of newborns was 11.2 ± SE 0.31 kg. Pups were individually tagged and recaptured throughout the nursing period. Average daily mass gain during the nursing period was 394 ± 26 g. Mean birth mass of males did not differ significantly from females, although pups found with fetal pelage (lanugo) (21.4% of all newborns) were smaller at birth (9.8 ± 0.44 kg) than non-lanugo pups (11.6 ± 0.33 kg). Mean weaning mass was estimated at 23.6 ± 1.2 kg at a mean weaning age of 32 d ± 1.5 d. While birth and weaning masses differed little from the published data for offshore Sable Island harbor seals (P. v. concolor), British Columbia harbor seals are characterized by half the daily mass gain and a longer nursing period.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1748-7692.2002.tb01069.x
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    Paper (German National Licenses)
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  • 3
    Electronic Resource
    Electronic Resource
    Strategies defined for the development of applications using Multilayer Perceptrons: A survey (1996)
    Oxford, UK : Blackwell Publishing Ltd
    Expert systems 13 (1996), S. 0 
    Details
    ISSN: 1468-0394
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Computer Science
    Notes: Abstract: The success in developing an application employing the Multilayer perceptron (MLP) as knowledge representation form is very dependent on the degree of complexity that the structure of the application's domain has. Different mathematical and/or statistical techniques have been developed to subtract the maximum amount of information of this type from an available sample of the operating space associated to the task of interest. In the context of MLP it has been used to decide on the form the different intervening parameters of the network and/or related learning algorithm (LA) should have. This paper provides an overview of the processes that have been defined to generate network applications using the MLP model, giving particular attention to those based on the dynamic creation of a network's architecture through the application of different techniques for subtracting information about the operating domain in which the training set is subsumed.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1468-0394.1996.tb00185.x
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    Paper (German National Licenses)
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  • 4
    Electronic Resource
    Electronic Resource
    The Relativity Of Color (2000)
    Springer
    Synthese 〈Dordrecht〉 123 (2000), S. 105-129 
    Details
    ISSN: 1573-0964
    Source: Springer Online Journal Archives 1860-2000
    Topics: Natural Sciences in General , Philosophy
    Notes: Abstract C. L. Hardin led a recent development in the philosophical literature on color in which research from visual science is used to argue that colors are not properties of physical objects, but rather are mental processes. I defend J. J. C. Smart's physicalism, which claims that colors are physical properties of objects, against this attack. Assuming that every object has a single veridical (that is, nonillusory) color, it seems that physicalism must give a specification of veridical color in terms natural to physics, independently of our interests. Hardin argues that since physicalism doesn't give us any such specification of veridical color, this view is false. However, this argument assumes a mistaken account of veridical color. I show physicalism can appeal to an alternative account, according to which veridical color is characterized in terms of favored conditions of perceptual access, independently of any specification of the physical nature of color.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1023/A:1005265725232
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    Paper (German National Licenses)
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  • 5
    Electronic Resource
    Electronic Resource
    The grant racket (1992)
    [s.l.] : Nature Publishing Group
    Nature 355 (1992), S. 197-197 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] SIR - Science advances by the independent thinking of nonconformists. Today, nonconformists have a hard time in US academic research. For instance, PHS (US Public Health Service) funding is based on peer review, but only about 15 per cent of all approved new requests are now ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/355197c0
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    Paper (German National Licenses)
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  • 6
    Electronic Resource
    Electronic Resource
    Cloning of a gene involved in cellulose biosynthesis in Acetobacter xylinum: Complementation of cellulose-negative mutants by the UDPG pyrophosphorylase structural gene (1989)
    Springer
    Molecular genetics and genomics 217 (1989), S. 26-30 
    Details
    ISSN: 1617-4623
    Keywords: Cellulose biosynthesis ; Acetobacter xylinum ; UDPG ; Pyrophosphorylase ; Gene
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Summary Three cellulose-negative (Cel-) mutants of Acetobacter xylinum strain ATCC 23768 were complemented by a cloned 2.8 kb DNA fragment from the wild type. Biochemical analysis of the mutants showed that they were deficient in the enzyme uridine 5′-diphosphoglucose (UDPG) pyrophosphorylase. The analysis also showed that the mutants could synthesize β(1-4)-glucan in vitro from UDPG, but not in vivo from glucose. This result was expected, since UDPG is known to be the precursor for cellulose synthesis in A. xylinum. In order to analyze the function of the cloned gene in more detail, its biological activity in Escherichia coli was studied. These experiments showed that the cloned fragment could be used to complement an E. coli mutant deficient in the structural gene for UDPG pyrophosphorylase. It is therefore clear that the cloned fragment must contain this gene from A. xylinum. This is to our knowledge the first example of the cloning of a gene with a known function in cellulose biosynthesis from any organism, and we suggest the gene be designated celA.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00330938
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  • 7
    Electronic Resource
    Electronic Resource
    Protein synthesis and secretion in the human epididymis and immunoreactivity with sperm antibodies (1990)
    New York, NY [u.a.] : Wiley-Blackwell
    Molecular Reproduction and Development 26 (1990), S. 12-23 
    Details
    ISSN: 1040-452X
    Keywords: Epdididymal proteins ; Spermatozoa ; Sperm antigens ; Sperm maturation ; Life and Medical Sciences ; Cell & Developmental Biology
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Biology
    Notes: The synthesis and secretion of proteins in the different regions of the human epididymis were studied in vitro. Epididymal tissues obtained from patients undergoing castration for prostatic carcinoma or from cadavers were incubated in the presence of [35S]methionine, and the resulting radiolabeled proteins were analysed on SDS-PAGE. The corpus region was found to be the most active segment in total protein synthesis. Significant qualitative and quantitative changes were observed in the pattern of proteins secreted from the different epididymal regions. To establish those epididymal proteins that interact with maturing sperm, the secreted products were immunoreacted with antibodies raised against a Triton X-100 extract of ejaculated human sperm heads. The antibodies react mainly with the head region of ejaculated spermatozoa as judged by indirect immunofluorescence. Protein A-gold labeling of freeze-fracture images showed gold particle distribution on the sperm plasma membrane. Western blot analysis of the secreted proteins revealed four bands (66, 37, 32, and 29 kDa) in the proximal regions and six additional bands 80, 76, 48, 27, 22, and 17 (kDa) in the distal part of the epididymis. Immunoprecipitation of the secreted proteins with these antibodies revealed six radioactive bands of 170, 80, 76, 60, 48, and 37 kDa, which indicates that certain proteins of epididymal origin bind to the sperm plasma membrane.
    Additional Material: 7 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/mrd.1080260104
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    Paper (German National Licenses)
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  • 8
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    Der erste Fund von Kieselgur in Schleswig—Holstein bei Brokenlande, südlich von Neumünster (Mit einem Beitrag zur Biostratigraphe des „Saale-Spätglazials“) (1967)
    Geozon Science Media
    Details
    Publication Date: 2022-08-05
    Description: Pollenanalytische Untersuchungen einer zum ersten Mal in Schleswig-Holstein südlich von Neumünster entdeckten Kieselgur ergaben ein sicheres eemzeitliches Alter. Das kleine Lager entstand im südlichen Drittel eines saalezeitlichen Stauwasserbeckens und zwar in einer früh angelegten rinnenförmigen Vertiefung des Beckenuntergrundes. Dieser besteht hauptsächlich aus gestauchten Tonen, damit verschuppten Sanden und zuunterst aus Geschiebemergel, der in einem Fall nach geschiebekundlicher Analyse Drenthe-Alter besitzt. Die Beckenfüllung wird aus gut geschichteten schluffigen Tonen bis tonigen Schlurfen aufgebaut. Im unteren Teil der Beckensedimente lassen sich pollenanalytisch keine Hinweise auf eine derzeitige nennenswerte Vegetationsbedeckung der Umgebung erkennen. Es dürfte sich um echte Glazialsedimente handeln. Der obere Teil wurde im „Saale-Spätglazial" sedimentiert. Darüber folgt im Bereich des Kieselgurlagers früheemzeitliche Tonmudde, danach eemzeitliche Kieselgur. Kompressionsversuche lassen erkennen, daß die Beckensedimente nicht durch Gletscherauflast vorbelastet sind. Die Überdeckung bilden weichselzeitliche Sande des Neumünsteraner Sanders. Vegetationsgeschichtlich wird das Lager vor allem dadurch interessant, daß hier anscheinend das vollständige „Saale-Spätglazial" erfaßt wurde. Floristisch bestanden anscheinend zwar große Ähnlichkeiten zur Älteren Dryaszeit des Weichsel-Spätglazials, jedoch verlief die Vegetationsentwicklung offenbar gleichmäßig ohne Rückschläge und ohne Einschaltung von Interstadialen. Es können drei Abschnitte unterschieden werden: A) Älteste waldlose Zeit, die wahrscheinlich in das „Pleniglazial" zu stellen ist, B) Zeit der Sanddorn-Gebüsche, in der auch die lichtbedürftigen Taxa der Bodenvegetation ihre Hauptverbreitung fanden, C) Zeit der Sanddorn-Wacholder-Gebüsche. An die letzte schließt sich die Birken-Zeit (Abschnitt I) des Eem-Interglazials an. Das Eem-Interglazial fügt sich vegetationsgeschichtlich in den für Nordwestdeutschland geläufigen Rahmen ein. Mit den vorliegenden Untersuchungen ist — in Verbindung mit den übrigen, in den letzten Jahren vom Geologischen Landesamt Schleswig-Holstein durchgeführten Untersuchungen — die vegetationsgeschichtliche Entwicklung vom „Saale-Spätglazial" bis in das Weichsel-Frühglazial für Schleswig-Holstein in den Hauptzügen lückenlos bekannt.
    Description: research
    Keywords: ddc:551.7
    Language: German
    Type: doc-type:article , publishedVersion
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    CITATION GEO-LEO
  • 9
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    Perfect Quantum Routing in Regular Spin Networks (2011)
    American Physical Society
    Details
    Publication Date: 2011-01-13
    Print ISSN: 0031-9007
    Electronic ISSN: 1079-7114
    Topics: Physics
    Published by American Physical Society
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    PAPER CURRENT
  • 10
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    Describing Soil Hydraulic Properties with Sums of Simple Functions (1993)
    Wiley
    Details
    Publication Date: 1993-01-01
    Print ISSN: 0361-5995
    Electronic ISSN: 1435-0661
    Topics: Geosciences , Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Published by Wiley
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    PAPER CURRENT
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