Search Results - (Author, Cooperation:A. Moya)
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1Latest Papers from Table of Contents or Articles in PressV. Antoci ; G. Handler ; T. L. Campante ; A. O. Thygesen ; A. Moya ; T. Kallinger ; D. Stello ; A. Grigahcene ; H. Kjeldsen ; T. R. Bedding ; T. Luftinger ; J. Christensen-Dalsgaard ; G. Catanzaro ; A. Frasca ; P. De Cat ; K. Uytterhoeven ; H. Bruntt ; G. Houdek ; D. W. Kurtz ; P. Lenz ; A. Kaiser ; J. Van Cleve ; C. Allen ; B. D. Clarke
Nature Publishing Group (NPG)
Published 2011Staff ViewPublication Date: 2011-09-16Publisher: Nature Publishing Group (NPG)Print ISSN: 0028-0836Electronic ISSN: 1476-4687Topics: BiologyChemistry and PharmacologyMedicineNatural Sciences in GeneralPhysicsPublished by: -
2FIS Bildung LiteraturdatenbankKubik, Gerhard [Verfasser] ; Malamusi, Moya A. [Verfasser] ; Mlendo, Sinosi [Verfasser]
Published 2017Staff ViewType of Medium: articlePublication Date: 2017Keywords: Lernen ; Musikpädagogik ; AfrikaIn: Oberhaus, Lars (Hrsg.); Stange, Christoph (Hrsg.), Musik und Körper. Interdisziplinäre Dialoge zum körperlichen Erleben und Verstehen von Musik. 1. Aufl., Bielefeld: transcript (2017), S. 309-323, 978-3-8376-3680-2Language: German -
3Latest Papers from Table of Contents or Articles in PressMoya, A., 62 additional authors
American Association for the Advancement of Science (AAAS)
Published 2018Staff ViewPublication Date: 2018-08-17Publisher: American Association for the Advancement of Science (AAAS)Print ISSN: 0036-8075Electronic ISSN: 1095-9203Topics: BiologyChemistry and PharmacologyGeosciencesComputer ScienceMedicineNatural Sciences in GeneralPhysicsPublished by: -
4Articles: DFG German National LicensesVillaverde, A. ; Martinez, M.A. ; Sobrino, F. ; Dopazo, J. ; Moya, A. ; Domingo, E.
Amsterdam : ElsevierStaff ViewISSN: 0378-1119Keywords: RNA heterogeneity ; epizootic ; genetic distance ; molecular epidemiology ; viral evolutionSource: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002Topics: BiologyType of Medium: Electronic ResourceURL: -
5Articles: DFG German National LicensesStaff View
ISSN: 0022-1910Keywords: Drosophila melanogaster ; development time ; intoxication ; larval competition ; larval stop ; survivalSource: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002Topics: BiologyType of Medium: Electronic ResourceURL: -
6Articles: DFG German National LicensesStaff View
ISSN: 0030-4018Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002Topics: PhysicsType of Medium: Electronic ResourceURL: -
7Articles: DFG German National LicensesStaff View
ISSN: 0018-2141Topics: HistoryNotes: ESTUDIOSURL: -
8Articles: DFG German National LicensesStaff View
ISSN: 0147-5975Keywords: [idt] Eupenicillium ; [idt] chemotaxonomy ; [idt] wall polysaccharidesSource: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002Topics: BiologyType of Medium: Electronic ResourceURL: -
9Articles: DFG German National LicensesStaff View
ISSN: 0147-5975Keywords: [idt] Cell wall ; [idt] Eupenicillium ; [idt] Talaromyces ; [idt] chemotaxonomy ; [idt] polysaccharidesSource: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002Topics: BiologyType of Medium: Electronic ResourceURL: -
10Articles: DFG German National LicensesStaff View
ISSN: 1432-0614Source: Springer Online Journal Archives 1860-2000Topics: BiologyProcess Engineering, Biotechnology, Nutrition TechnologyNotes: Abstract We have analysed the influence of the initial pH of the medium and the quantity of aeration provided during the batch fermentation of solutions of d-xylose by the yeast Hansenula polymorpha (34438 ATCC). The initial pH was altered between 3.5 and 6.5 whilst aeration varied between 0.0 and 0.3 vvm. The temperature was kept at 30 °C during all the experiments. Hansenula polymorpha is known to produce high quantities of xylitol and low quantities of ethanol. The most favourable conditions for the growth of xylitol turned out to be: an initial pH of between 4.5 and 5.5 and the aeration provided by the stirring vortex alone. Thus, at an initial pH of 5.5, the maximum specific production rate (μm) was 0.41 h−1, the overall biomass yield (Y x/s G) was 0.12 g g−1, the specific d-xylose-consumption rate (q s ) was 0.075 g g−1 h−1 (for t = 75 h), the specific xylitol-production rate (q Xy ) was 0.31 g g−1 h−1 (for t = 30 h) and the overall yields of ethanol (Y E/s G) and xylitol (Y Xy/s G) were 0.017 and 0.61 g g−1 respectively. Both q s and q Xy decreased during the course of the experiments once the exponential growth phase had finished.Type of Medium: Electronic ResourceURL: -
11Articles: DFG German National LicensesStaff View
ISSN: 1432-1203Source: Springer Online Journal Archives 1860-2000Topics: BiologyMedicineNotes: Summary Two cases of pericentric inversion of chromosome 12 are presented, one 46,XX,inv(12)(p13;q11) and the other 47,XX,+21,inv(12)(p13;q13). In both cases one of the parents was also a heterozygotic carrier of the inversion. These inversions were detected among 4035 cytogenetic analyses carried out in patients with psychosomatic retardation and/or malformations (357 with a Down phenotype) and in patients with histories of miscarriages, sterility, or growth failure. In cases studied from a review of the literature together with our own we found that among 3235 cases of Down syndrome there were 7 patients with trisomy 21 and inherited balanced reciprocal translocation involving chromosomes other than pair 21. The frequent participation of some chromosomes in these balanced reciprocal translocations, above all those of group A (1–3), suggests that these and probably other rearrangements could make the segregation of chromosome 21 easier.Type of Medium: Electronic ResourceURL: -
12Articles: DFG German National LicensesHäder, D. -P. ; Lebert, M. ; Mercado, J. ; Aguilera, J. ; Salles, S. ; Flores-Moya, A. ; Jiménez, C. ; Figueroa, F. L.
Springer
Published 1996Staff ViewISSN: 1432-1793Source: Springer Online Journal Archives 1860-2000Topics: BiologyNotes: Abstract The effects of solar radiation on photosynthetic oxygen production, pulse amplitude-modulated (PAM) fluorescence and pigmentation were measured in the Mediterranean brown macroalgaPadina pavonica (Linnaeus) Lamouroux under field conditions and natural sunlight. Exposure of thalli to solar radiation for 1 h caused a dramatic decrease of their photosynthetic quantum yield, which recovered to initial levels after they had been placed in the shade for 3 h. Photoinhibition also occurred at the natural growth site ofP. pavonica during the hours of maximal solar irradiance. Photosynthetic oxygen production was also affected by high levels of solar radiation both in algae harvested from the surface and from 6 m depth; oxygen production started to decrease after a few minutes of exposure, and negative values were found after 1 h of solar exposure. Chlorophylla content inP. pavonica also decreased during the hours of maximal solar irradiation. These results suggest that photoinhibition ofP. pavonica occurs during part of a typical summer day on Mediterranean coasts.Type of Medium: Electronic ResourceURL: -
13Articles: DFG German National LicensesStaff View
ISSN: 1432-072XKeywords: Talaromyces ; Cell wall polysaccharidesSource: Springer Online Journal Archives 1860-2000Topics: BiologyNotes: Abstract The neutral sugars and amino sugars, released by acid hydrolysis of walls and polysaccharidic fractions, of six species of Talaromyces and the infrared spectra have been used to study their interspecific relationships. In whole cell walls neutral sugars ranged from 23 to 39.6% dry weight and were identified as glucose, galactose and mannose. Glucosamine varied from 8 to 19.8% in the samples. Galactosamine (2% or less) was found in T. emersonii and T. rotundus and no galactosamine in the other species. Sequential fractionation of the cell walls with alkali and acid gave several polysaccharidic fractions. The main differences among species were found in the alkali-soluble fraction at 20° (F1). This fraction represented 8 to 33.2% of the whole cell wall and was characterized as an α-glucan in T. bacillisporus, T. emersonii, T. luteus and T. rotundus (Group A) and as a β-galactofuranosyl containing glucan in T. ohiensis and T. stipitatus (Group B). The alkali-insoluble residue (F4) represented the bulk of the cell wall in all species tested (33.2% to 57.3%) and was characterized as a β-glucan/chitin complex. The results may indicate degrees of interspecific relationship in the genus Talaromyces.Type of Medium: Electronic ResourceURL: -
14Articles: DFG German National LicensesStaff View
ISSN: 1432-2242Keywords: Larval competition ; Larva-to-adult viability ; Frequency-dependent selection ; Overfeeding techniqueSource: Springer Online Journal Archives 1860-2000Topics: BiologyNotes: Summary The application of the overfeeding technique (interruption of the competition during larval development) to the study of larval competition in two-strain cultures of Drosophila melanogaster demonstrates the following points: (1) viability is a function of competition time; (2) viability becomes more frequency-dependent as competition time increases; (3) the dynamics of the “inner” subpopulation (adults that have passed all their development in a crowded condition) and “outer” subpopulation (adults coming from larvae recovered by interruption of competition) vary with time as regards frequency-dependence; and (4) the wild type strain Oregon is the active agent in competition with the strain cardinal.Type of Medium: Electronic ResourceURL: -
15Articles: DFG German National LicensesStaff View
ISSN: 1617-4623Keywords: Quasispecies ; Genetic bottleneck ; Vesicular stomatitis virusSource: Springer Online Journal Archives 1860-2000Topics: BiologyNotes: Abstract The population dynamics of RNA viruses have an important influence on fitness variation and, in consequence, on the adaptative potential and virulence of this ubiquitous group of pathogens. Earlier work with vesicular stomatitis virus showed that large population transfers were reproducibly associated with fitness increases, whereas repeated transfers from plaque to plaque (genetic bottlenecks) lead to losses in fitness. We demonstrate here that repeated five-plaque to five-plaque passage series yield long-term fitness stability, except for occasional stochastic fitness jumps. Repeated five-plaque passages regularly alternating with two consecutive large population transmissions did not cause fitness losses, but did limit the size of fitness gains that would otherwise have occurred. These results underscore the profound effects of bottleneck transmissions in virus evolution.Type of Medium: Electronic ResourceURL: -
16Articles: DFG German National LicensesStaff View
ISSN: 0178-515XSource: Springer Online Journal Archives 1860-2000Topics: Process Engineering, Biotechnology, Nutrition TechnologyNotes: Abstract We have performed a comparative analysis of the fermentation of the solutions of the mixtures of D-glucose and D-xylose with the yeasts Pachysolen tannophilus (ATCC 32691) and Candida shehatae (ATCC 34887), with the aim of producing bioethanol. All the experiments were performed in a batch bioreactor, with a constant aeration level, temperature of 30 °C, and a culture medium with an initial pH of 4.5. For both yeasts, the comparison was established on the basis of the following parameters: maximum specific growth rate, biomass productivity, specific rate of substrate consumption (q s) and of ethanol production (q E), and overall ethanol and xylitol yields. For the calculation of the specific rates of substrate consumption and ethanol production, differential and integral methods were applied to the kinetic data. From the experimental results, it is deduced that both Candida and Pachysolen sequentially consume the two substrates, first D-glucose and then D-xylose. In both yeasts, the specific substrate-consumption rate diminished over each culture. The values q s and q E proved higher in Candida, although the higher ethanol yield was of the same order for both yeasts, close to 0.4 kg kg−1.Type of Medium: Electronic ResourceURL: -
17Articles: DFG German National LicensesStaff View
ISSN: 1573-6857Source: Springer Online Journal Archives 1860-2000Topics: BiologyNotes: Abstract Frequency-dependent selection may be accounted for, in ecological terms, by the differential effectiveness of alternative genotypes in exploiting limiting environmental resources. Differentiation in resource exploitation among genotypes implies in turn that a mix of genotypes may exploit more fully the resources than a genetically uniform population, a phenomenon called ‘overcompensation’ Experiments designed to test for overcompensation whow that highly polymorphic populations can support larger numbers of individuals per food unit than less polymorphic populations. This difference cannot be attributed to the level of individual heterozygosity, which is the same in both types of populations.Type of Medium: Electronic ResourceURL: -
18Articles: DFG German National LicensesStaff View
ISSN: 1573-6857Source: Springer Online Journal Archives 1860-2000Topics: BiologyNotes: Abstract Pupal mortality is shown here to bear the main responsibility for total mortality duringDrosophila melanogaster development in crowded conditions. The dynamics of the pupa-to-adult and larva-to-adult processes of mortality follows a S-shaped logistic model, like survival in density-dependent processes. Data given here confirm to some extent Wallace's suggestion that pupal mortality is a density-dependent process.Type of Medium: Electronic ResourceURL: -
19Articles: DFG German National LicensesStaff View
ISSN: 1573-6857Source: Springer Online Journal Archives 1860-2000Topics: BiologyNotes: Abstract We have examined the effects of density and frequency in the larval competition of Drosophila melanogaster by measuring three fitness components: viability (V), mean development time (MDT) and a combination of these two (E). We have detected (contrary to most published results) non-linear effects of density in single-genotype cultures; in addition, different functions are required to describe the density effects below and above the optimal density. Frequency has also non-linear effects in the two-genotype cultures. Only one polymorphic equilibrium frequency, which is stable, occurs with respect to V; but two polymorphic equilibria, one stable and one unstable, exist with respect to E. The responses in single-genotype cultures do not allow one to predict the outcome of the competition in two-genotype cultures.Type of Medium: Electronic ResourceURL: -
20Articles: DFG German National LicensesMonteagudo, J. M ; Rincón, J. ; Rodríguez, L. ; Fuertes, J. ; Moya, A.
Berlin : Wiley-Blackwell
Published 1993Staff ViewISSN: 0138-4988Keywords: Life Sciences ; Life Sciences (general)Source: Wiley InterScience Backfile Collection 1832-2000Topics: Process Engineering, Biotechnology, Nutrition TechnologyNotes: Optimization studies have been carried out for the production of L-lactic acid from the fermentation of beet molasses by Lactobacillus delbrueckii. A PLACKETT-BURMAN Design and a Central Composite Design have been used to determine the most suitable nutrient medium for obtaining a maximum cell concentration. A second-order polynomial empirical model relating both the cell and nutrient concentrations was formulated. The variables selected for the study were Yeast Extract, Peptone, Tween 80 (antifoam), MgSO4 · 7H2O, MnSO4·4H2O, FeSO4 · 7H2O and K2HPO4/KH2PO4. Among them, only Yeast Extract and Peptone were found to significantly affect the cell concentration. A maximum cell yield was found when the concentrations of Yeast Extract and Peptone were, respectively, 5.31 g/l and 5.08 g/l. All conclusions are restricted to the experimental range studied.Additional Material: 1 Ill.Type of Medium: Electronic ResourceURL: