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  • 1
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    Synthesis and thermal stability of (Co,Ni)O solid solutions (2019)
    Wiley
    Details
    Publication Date: 2019
    Description: Abstract (Co,Ni)O solid solutions are considered as promising protective materials of O2‐evolving anodes for Al production. In this context, two solid‐state synthesis methods, namely high‐energy ball milling (HEBM) and calcination, have been evaluated for the synthesis of (Co,Ni)O solid solutions. In all cases, CoxNi1‐xO solid solutions can be formed over the whole composition range. However, undesired WC contaminant is observed using the HEBM method due to the erosion of the milling tools. Their thermal stability in air has been analyzed by thermogravimetric analyzes (TGA) complemented by X‐ray diffraction (XRD) analyses. It is shown that CoxNi1‐xO solid solutions are stable at 1000°C over the whole composition range whereas they are only stable for x ≤46 and x ≤22 at 800°C and 700°C, respectively. For higher Co contents, the formation of Co3O4 is observed. This is a relevant information for their future use for Al production, which can be done at different temperatures (~700‐1000°C) depending of the electrolyte composition. This article is protected by copyright. All rights reserved.
    Print ISSN: 0002-7820
    Electronic ISSN: 1551-2916
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics , Physics
    Published by Wiley
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  • 2
    Electronic Resource
    Electronic Resource
    Phylogeny of flatfishes (Pleuronectiformes): comparisons and contradictions of molecular and morpho-anatomical data (1994)
    Oxford, UK : Blackwell Publishing Ltd
    Journal of fish biology 45 (1994), S. 0 
    Details
    ISSN: 1095-8649
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Biology
    Notes: Several species of flatfishes (Pleuronectiformes) have been studied by isoenzyme electrophoresis and DNA/DNA hybridization to establish the evolutionary relationships of this group of fishes. This molecular data-based phylogeny has been compared to previously described phylogenies based on morpho-anatomical criteria. A number of discrepancies are observed and discussed. The high degree of genetic divergence observed within the families of Pleuronectiformes indicates that their origin seems to be much older than suggested by their striking morphological similarity.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1095-8649.1994.tb00934.x
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  • 3
    Electronic Resource
    Electronic Resource
    ANALYSIS OF HLA HAPLOTYPES IN FAMILIES WITH TYPE 1 DIABETES MELLITUS IN LA RÉUNION ISLAND (1996)
    Oxford, UK : Blackwell Publishing Ltd
    International journal of immunogenetics 23 (1996), S. 0 
    Details
    ISSN: 1744-313X
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Biology , Medicine
    Notes: To analyse HLA and insulin-dependent diabetes mellitus (IDDM) association in the ethnically mixed population of La Réunion island, we carried out a family study on 70 diabetic subjects. HLA-DQA1, -DQB1 and -DRB1 typing was performed by polymerase chain reaction-restriction fragment length polymorphism (PCR-RFLP), completed by PCR-sequence-specific oligonucleotide (SSO) and PCR-sequence-specific priming (SSP). Haplotype-relative risks (HRR) were determined with the non-transmitted parental haplotypes as controls, and relative risks (RR) were calculated with a classical case-control study. The most significant risks were found for the cis and trans combinations between DQA1*03 or *0501 (Arg52+) and DQB1*02 or *0302 (Asp57−) alleles, suggesting a direct role for the HLA-DQ heterodimer in IDDM susceptibility. Interestingly, due to the mixed origin of the population, the trans-encoded DQ molecules in the (DR3)-DQA1*0501-DQB1*02/(DR4)-DQA1*03-DQB 1*0302 subjects were also found cis-encoded in patients with the (DR7 or 9)-DQA1*03-DQB1*02 haplotype and in a patient with the rare (DR 11)-DQA1*0501-DQB 1*0302 haplotype. A relative predispositional effect (RPE) analysis gave significant haplotype-IDDM+ associations in the following order: (DR3)-DQA1*0501-DQB1*02〉(DR4)-DQA1*03-DQB1*0302〉(DR9)-DQA1*03-DQB*02〉(DR7)-DQA1*03-DQB1*02〉(DR2)-DQA1*01-DQB1*0502. No protective effect remained significant once the susceptible haplotypes were removed. A stratification study showed a stronger influence of the DQ genes than DRB1 alleles within the DR7 haplotypes. On the other hand, IDDM subjects with only one susceptible haplotype had inherited this haplotype more often from their father than from their mother. This paternal effect could be related to the greater risk of IDDM in offspring of diabetic fathers than the risk in offspring of diabetic mothers.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1744-313X.1996.tb00136.x
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  • 4
    Electronic Resource
    Electronic Resource
    Le Geotrichum candidum Link, cause possible de graves enterites chez les pintadeaux (1974)
    Springer
    Mycopathologia 53 (1974), S. 125-131 
    Details
    ISSN: 1573-0832
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Description / Table of Contents: Résumé L'‘entérite transmissible’ du pintadeau, qui apparaît sur des animaux âgés de moins de 12 semaines, est caractérisée par une diarrhée jaunâtre et une déshydratation généralisée, un gonflement des caecums, une mortalité importante. L'analyse mycologique des aliments montre qu'il ne s'agit pas d'une mycotoxicose classique. Par contre, l'isolement duGeotrichum candidum à partir de l'intestin d'animaux atteints laisse penser que ce champignon aurait un rôle dans la maladie. Il n'y a pas transmission par l'oeuf. Les fientes, les litières et l'eau de boisson peuvent être des sources de contamination. Les essais d'infection expérimentale à l'aide de cultures duGeotrichum ont, jusqu'alors, été sans succès.
    Notes: Abstract The ‘transmissible enteritis’ of Guinea fowl chick, which appears in less than 12 weeks birds, is characterized by a yellowish diarrhea and a general dehydratation, a swelling of caecums, a large mortality. The mycological analysis of food points out that it is not a classical mycotoxicosis. On the other hand, the isolation ofGeotrichum candidum from the intestine of dead animals let presume that this fungus plays a role in the disease. There is no transmission by egg. The dungs, the litters and the drink water can be origin of contamination. Experimental infections with cultures ofGeotrichum are actually unsuccessful.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02127202
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  • 5
    Electronic Resource
    Electronic Resource
    Altérations fongiques des pommes destinées aux industries de transformation (1981)
    Springer
    Mycopathologia 75 (1981), S. 165-168 
    Details
    ISSN: 1573-0832
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Description / Table of Contents: Abstract The mycological examination of nine samples of apples intended for industrial use, shows a predominance of fungal alterations related with postharvest injuries. Among the detected fungi, the possible interferences of Penicillium expansum (patulin producer) and of Fusarium (trichothecenes elaborators) in the etiology of esophageal cancer are discussed.
    Notes: Résumé L'examen mycologique de neuf lots de pommes destinées à la transformation révèle une prédominance d'altérations fongiques liées aux blessures que subissent ces fruits à la cueillette ou au cours des manutentions et du stockage. Parmi les champignons détectés, les rôles possibles du Penicillium expansum (producteur de patuline) et des Fusarium (élaborant des trichothécènes) dans l'étiologie du cancer de l'oesophage sont discutés.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00482811
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  • 6
    Electronic Resource
    Electronic Resource
    Interaction Between Phenanthrene and Zinc in Their Toxicity to the Sheepshead Minnow (Cyprinodon variegatus) (1999)
    Springer
    Archives of environmental contamination and toxicology 37 (1999), S. 251-257 
    Details
    ISSN: 1432-0703
    Source: Springer Online Journal Archives 1860-2000
    Topics: Energy, Environment Protection, Nuclear Power Engineering , Medicine
    Notes: Abstract. Many contaminated sites contain a variety of toxicants. Risk assessment and the development of water quality criteria therefore require information on the interactive effects among toxicants in such mixtures. Interactions between metals are relatively well studied, but little is known about interactions between metals and hydrocarbons. This study investigated the interaction between phenanthrene and zinc in the sheepshead minnow Cyprinodon variegatus. Interaction studies were performed with 7-day-old minnows in 96-h bioassays with zinc and phenanthrene at a fixed ratio and with varying proportions of zinc and phenanthrene. Mixture toxicity was quantified with the toxic unit, additive index, and excess function methods. All three methods generally indicated an antagonistic interaction between phenanthrene and zinc, though the results also provide some evidence for a synergistic interaction at low toxicant levels or at specific phenanthrene-to-zinc ratios. Short-term uptake experiments were conducted to determine if the strong antagonistic interaction observed when zinc and phenanthrene were present at 50% of their LC50 values was due to effects of zinc and phenanthrene on each other's uptake. Significantly less 65Zn uptake occurred in the presence of phenanthrene than in its absence. In contrast, zinc did not appear to affect the uptake of 14C-phenanthrene.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s002449900512
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  • 7
    Electronic Resource
    Electronic Resource
    Structure du radical cyano-vinyle CH2=Ċ-CN Etude expérimentale et théorique (1969)
    Springer
    Theoretical chemistry accounts 14 (1969), S. 339-349 
    Details
    ISSN: 1432-2234
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Résumé Tout d'abord, on montre par RPE que le radical CH2=Ċ-CN possède à basse température une structure instable pliée et à température plus élevée une structure stable linéaire. Un calcul théorique sur ce radical ainsi que sur le radical butatriényle est en bon accord avec les résultats expérimentaux.
    Abstract: Zusammenfassung Aus ESR Messungen wird gefolgert, daß das Radikal CH2=Ċ-CN bei tiefer Temperatur in einer instabilen gebogenen Struktur und bei höherer Temperatur in einer stabilen linearen Struktur vorliegt. Theoretische Berechnungen stehen sowohl für dieses als auch für das Butatrienyl-Radikal in guter Übereinstimmung mit experimentellen Daten.
    Notes: Abstract First, it is shown by ESR that the radical CH2=Ċ-CN at low temperature presents an unstable bent structure and at higher temperature a stable linear structure. A theoretical calculation on this radical and on the butatrienyl one is in good agreement with the experimental results.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00527115
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  • 8
    Electronic Resource
    Electronic Resource
    Microstructural, electrical and magnetic properties of NdBa2Cu3O7−δ prepared from BaO2 (1991)
    Springer
    Journal of materials science 26 (1991), S. 2359-2364 
    Details
    ISSN: 1573-4803
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Notes: Abstract NdBa2Cu3O7−δ was synthesized in oxygen from a stoichiometric mixture of Nd2O3, BaO2 and CuO between 890 and 1070
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01130182
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  • 9
    Electronic Resource
    Electronic Resource
    High-T c superconductivity in theRBa2−xSrxCu3O7 system forR ≡ Y, Gd, Sm and Nd (1991)
    Springer
    Journal of materials science 26 (1991), S. 5873-5876 
    Details
    ISSN: 1573-4803
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Notes: Abstract RBa2−x SrxCu3O7 samples whereR≡Y, Gd, Sm and Nd were synthesized in oxygen between 930 and 1070 °C. The effect of the Ba substitution by Sr on the sample optimum synthesis temperature, microstructure and electrical properties was investigated for 0⩽x⩽1.0. The magnitude of the resistivity increase and of theT c decrease due to the Ba substitution by Sr is found to depend on theR ionic radius. Moreover, the Sr addition has a decreasing effect onJ c for allR elements.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01130127
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  • 10
    Electronic Resource
    Electronic Resource
    Comparaison du polymorphisme à des locus homologues dans les espèces jumelles D. melanogaster et D. simulans (1982)
    Springer
    Genetica 59 (1982), S. 145-150 
    Details
    ISSN: 1573-6857
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract A comparison of polymorphism at homologous loci between the sibling species D. melanogaster and D. simulans. — Change in frequency of homologous mutant genes sepia and vermilion in the sibling species D. melanogaster and D. simulans in competition against their wild-type alleles was followed in population cages. For each locus, allelic frequencies reach the same equilibrium level in the two species: about 0.32 for sepia and 0.27 for vermilion. These results strongly support the conclusion that selection at the sepia and vermilion loci themselves is responsible for the maintenance and the level of polymorphism at these loci, since the same type of evolution can be observed in both species without the genetic differences between these sibling species appearing to interfere.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00133299
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