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  • 1975-1979  (82)
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Language
Years
Year
  • 1
    Monograph available for loan
    Monograph available for loan
    Wageningen : Centre for Agricultural Publ. and Documentation
    Call number: PIK M 370-91-0161 ; MOP 44707 / Mitte
    Type of Medium: Monograph available for loan
    Pages: 175 Seiten , Illustrationen
    Edition: 2., revised and extended edition
    ISBN: 9022006522
    Series Statement: Simulation monographs
    Language: English
    Note: Contents 1 Introduction 1.1 Purpose 1.2 Some terminology 1.3 Electrical analogues 1.4 State determined systems 1.5 Simulation languages 2 Exponential growth 2.1 Analytical and numerical integration 2.2 Simulation 2.3 Time constant and time interval of integration 2.4 Integration method and time interval 3 The growth of yeast 3.1 Description of the system 3.2 Relational diagrams 3.3 Simulation 3.4 Logistic growth 4 Interference of plants 4.1 Replacement series 4.2 Density of sowing 4.3 Simulation of plant interference 4.4 Further modelling aspects 4.4.1 The INDEX and MACRO feature 4.4.2 The INITIAL and DYNAMIC section 5 Growth and competition of Paramecium 5.1 Description of the system 5.2 A simulation program 5.3 Preliminary estimation of parameters 5.4 Final determination of parameters 5.5 Stochastic aspects 5.6 The programming of probability functions 6 Modelling of development, dispersion and diffusion 6.1 Introduction 6.2 Physiological age and development stage 6.3 Demographic models 6.3.1 Age-classes 6.3.2 Errors of approximation 6.3.3 The matrix method 6.4 Germination models 6.4.1 Boxcar train without dispersion 6.4.2 Boxcar train with constant relative dispersion 6.4.3 Boxcar train with controlled dispersion 6.4.4 Refinements 6.5 The flow of heat in soils 7 Growth and development of Helminthosporium maydis 7.1 Introduction 7.2 The weather 7.3 Appearance and growth of lesions 7.4 Sporophore or stalk formation 7.5 Sporulation of green stalks 7.6 Sporulation of dried stalks 7.7 Dispersal of spores 7.8 Germination of spores and penetration of germtubes 7.9 Timing, initialization and output organization 7.10 Results and sensitivity analyses 8 Population models for fruit-tree red spider miteand predatory mites 8.1 Fruit-tree red spider mite 8.2 Predatory mite, Amblyseius potentillae 8.3 Relations between predator and prey 8.4 Preference as a competitive process 8.5 Verification 9 Solutions of the exercises References Appendix A Appendix B Index
    Location: A 18 - must be ordered
    Location: MOP - must be ordered
    Branch Library: PIK Library
    Branch Library: GFZ Library
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  • 2
    Monograph available for loan
    Monograph available for loan
    Wageningen : Centre for Agricultural Publ.and Documentation
    Call number: MOP 44708 / Mitte
    Type of Medium: Monograph available for loan
    Pages: 141 Seiten , Illustrationen
    ISBN: 9022006018
    Series Statement: Simulation monographs
    Language: English
    Location: MOP - must be ordered
    Branch Library: GFZ Library
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  • 3
    Electronic Resource
    Electronic Resource
    s.l. : American Chemical Society
    Biochemistry 18 (1979), S. 3973-3976 
    ISSN: 1520-4995
    Source: ACS Legacy Archives
    Topics: Biology , Chemistry and Pharmacology
    Type of Medium: Electronic Resource
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  • 4
    Electronic Resource
    Electronic Resource
    [s.l.] : Nature Publishing Group
    Nature 257 (1975), S. 60-62 
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] Using somatic cell hybridisation techniques10'12 we have investigated whether different gene mutations are involved in clinical variants of GMl-gangliosidosis. Fibroblasts from a patient with the infantile type 1 and the juvenile type 2 (refs 1-3), and from the type 3 patient without mental ...
    Type of Medium: Electronic Resource
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  • 5
    Electronic Resource
    Electronic Resource
    Palo Alto, Calif. : Annual Reviews
    Annual Review of Physiology 41 (1979), S. 459-472 
    ISSN: 0066-4278
    Source: Annual Reviews Electronic Back Volume Collection 1932-2001ff
    Topics: Medicine , Biology
    Type of Medium: Electronic Resource
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  • 6
    Electronic Resource
    Electronic Resource
    [s.l.] : Nature Publishing Group
    Nature 264 (1976), S. 615-619 
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] Ocean-floor metamorphism, which overprints the pseudo-stratigraphy of ophiolite complexes in southern Chile, is best explained by a combination of hydrothermal and contact metamorphism associated with igneous activity at a spreading centre. Such metamorphism may be more important than igneous ...
    Type of Medium: Electronic Resource
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  • 7
    Electronic Resource
    Electronic Resource
    Springer
    Human genetics 〈Berlin〉 51 (1979), S. 259-267 
    ISSN: 1432-1203
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Notes: Summary Hybrid cell lines isolated after fusions between Chinese hamster E36 cells and normal human white blood cells were analyzed for human β-galactosidase isoenzymes and for human chromosomes, especially 3, 12, and 22, the candidates for bearing a β-galactosidase locus. Results of neuraminidase treatment of the cell lysates and immunological studies showed that in man two structural β-galactosidase loci are present and can be assigned to chromosomes 3 and 22. No correlation was found between the expression of human β-galactosidase and the presence of human chromosome 12.
    Type of Medium: Electronic Resource
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  • 8
    ISSN: 1432-1203
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Notes: Summary Cultured skin fibroblasts from a 2-year-old boy with an atypical form of β-galactosidase deficiency have been studied. With the artificial substrate 4-methylumbelliferyl-β-D-galactopyranoside, 5–15% residual activity was found in fibroblasts from this patient. Most of this activity was in the monomeric A form of the enzyme, very little in the multimeric B form. Km value, pH profile, and heat lability of the mutant enzyme were similar to those of β-galactosidase from control fibroblasts. Immunological studies showed that the mutant enzyme cross-reacted with an antiserum raised against human liver β-galactosidase, but the catalytic activity per unit antigenic activity was lower than normal. It was demonstrated by somatic cell hybridization that the gene mutation in this patient is different from that in patients with type 1 or type 2 GM1-gangliosidosis. No genetic complementation was found after fusion of fibroblasts from this patient with those from two other clinical variants of GM1-gangliosidosis formerly designated type 3 and adult type 4.
    Type of Medium: Electronic Resource
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  • 9
    Electronic Resource
    Electronic Resource
    Springer
    Planta 139 (1978), S. 79-83 
    ISSN: 1432-2048
    Keywords: Chlorophyllase ; Chlorophyll-proteins ; Etiolation ; Greening ; Phaseolus ; Plastid membranes
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract In crude extracts of primary leaves from dark grown seedlings of Phaseolus vulgaris L., relatively high hydrolytic activity of chlorophyllase (chlorophyll-chlorophyllido-hydrolase, EC 3.1.1.14) was observed. When plants were exposed to continuous illumination, the enzyme activity in the extracts was doubled within 3 days and both chlorophyll a and b were synthesized. However, when exposed to periodic illumination (1 min light-59 min dark) the enzyme activity was doubled within 1 to 2 days and chlorophyll a was synthesized but the formation of chlorophyll b was suppressed. When plants were transferred from periodic illumination to continuous illumination chlorophyll b was synthesized but the activity of chlorophyllase declined. Chloramphenicol blocked the increase in enzyme activity independent of the light regimes, but cycloheximide inhibited the activity more effectively during growth in the light. The presence of chlorophyllase activity in the leaves is discussed in relation to the chlorophyll-proteins and the membranes known to be present in chloroplasts. It is suggested that the enzyme is synthesized on plastid ribosomes.
    Type of Medium: Electronic Resource
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  • 10
    Electronic Resource
    Electronic Resource
    Springer
    Colloid & polymer science 256 (1978), S. 1110-1120 
    ISSN: 1435-1536
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology , Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Notes: Summary This paper treats the stability of silver iodide sols in water-ethylene glycol (EG) mixtures. Rates of coagulation, obtained by a stopped-flow technique are analyzed in combination with data on surface charge, conductivity, and density. To some extent, bulk solution properties are reflected in the stability. For instance, indications of contraction, with a maximum at a molar ratio water/EG ≈2 recur in the rates of fast coagulation. It is impossible to describe the transition from water to EG through the variation of the bulk dielectric permittivityonly, because drastic alterations occur also in the Stern layer. Especially its change in thickness and the increasing specific counterion adsorption with increasing EG content are important stability-determining factors. Particularly at high EG concentrations, the outerHelmholtz plane may not be considered as a smeared-out equipotential plane. The mosaic-like potential pattern of this layer suggests the necessity to reconsider the dynamics of particle interactions.
    Type of Medium: Electronic Resource
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