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  • Electronic Resource  (10)
  • Polymer and Materials Science  (4)
  • Interspecific hybridization  (2)
  • Magnetic resonance imaging  (2)
  • Puroindoline  (2)
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  • Electronic Resource  (10)
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  • 1
    Electronic Resource
    Electronic Resource
    Lhermitte-Duclos disease associated with syringomyelia (1996)
    Springer
    Neuroradiology 38 (1996), S. 529-531 
    Details
    ISSN: 1432-1920
    Keywords: Key words Lhermitte-Duclos disease ; Dysplastic gangliocytoma ; Magnetic resonance imaging ; Syringomyelia
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract A 23-year-old man presented with a 2-week history of intracranial hypertension. CT showed a large, nonenhancing cerebellar mass with surrounding calcification and displacement of the fourth ventricle. MRI revealed a septate lesion, with low signal on T1-weighted and high signal on T2-weighted images. The cerebellar tonsils were displaced below the foramen magnum and there was associated syringomyelia. The MRI features were characteristic of Lhermitte-Duclos (LD) disease (dysplastic gangliocytoma) and the diagnosis was confirmed following surgery. In this case, we emphasise the usefulness of MRI in the diagnosis of LD disease and consider the possible pathogenesis of the associated syringomyelia.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00626089
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  • 2
    Electronic Resource
    Electronic Resource
    Lhermitte-Duclos disease associated with syringomyelia (1996)
    Springer
    Neuroradiology 38 (1996), S. 529-531 
    Details
    ISSN: 1432-1920
    Keywords: Lhermitte-Duclos disease ; Dysplastic gangliocytoma ; Magnetic resonance imaging ; Syringomyelia
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract A 23-year-old man presented with a 2-week history of intracranial hypertension. CT showed a large, nonenhancing cerebellar mass with surrounding calcification and displacement of the fourth ventricle. MRI revealed a septate lesion, with low signal on T1-weighted and high signal on T2-weighted images. The cerebellar tonsils were displaced below the foramen magnum and there was associated syringomyelia. The MRI features were characteristic of Lhermitte-Duclos (LD) disease (dysplastic gangliocytoma) and the diagnosis was confirmed following surgery. In this case, we emphasise the usefulness of MRI in the diagnosis of LD disease and consider the possible pathogenesis of the associated syringomyelia.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00626089
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  • 3
    Electronic Resource
    Electronic Resource
    Meiotic pairing in hybrids between tetraploid Triticale and related species: new elements concerning the chromosome constitution of tetraploid Triticale (1985)
    Springer
    Theoretical and applied genetics 70 (1985), S. 390-399 
    Details
    ISSN: 1432-2242
    Keywords: Tetraploid triticale ; Chromosome pairing ; Interspecific hybridization ; Genome re-arrangement ; Genome affinity
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Summary Two F5 strains of tetraploid triticale (2n= 4x=28), obtained from 6x triticaleX2 rye progenies, were crossed with diploid and tetraploid rye, some durum and bread wheats, and various 8x and 6x triticale lines. Meiosis in the different hybrid combinations was studied. The results showed that the haploid complement of these triticales consists of seven chromosomes from rye and seven chromosomes from wheat. High frequencies of PMCs showing trivalents were observed in hybrids involving the reference genotypes of wheat and triticale. These findings proved that several chromosomes from the wheat component have chromosome segments coming from two parental wheat chromosomes. The origin of these heterogeneous chromosomes probably lies in homoeologous pairing occurring at meiosis in the 6x triticaleX2x rye hybrids from which 4x triticale lines were isolated. A comparison among different hybrids combinations indicated that the involvement of D-genome chromosomes in homoeologous pairing is quite limited. In contrast, meiotic patterns in 4x triticale X 2x rye hybrids showed a quite high pairing frequency between some R chromosomes and their A and B homoeologues.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00273744
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  • 4
    Electronic Resource
    Electronic Resource
    Biochemical characterization of lines descended from 8x triticale x 4x triticale cross (1990)
    Springer
    Theoretical and applied genetics 79 (1990), S. 646-653 
    Details
    ISSN: 1432-2242
    Keywords: Triticale ; Interspecific hybridization ; Genome rearrangement ; Biochemical markers ; Electrophoresis
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Summary Fifty-two progenies originating from a cross between 8x and 4x triticale were submitted to cytogenetic analyses and to various electrophoretic studies [high-molecular-weight (HMW) glutelins, HMW secalins, γ-secalins, α and ω-gliadins, β-amylases] to identify new genetic structures, more specifically the input of the D genome in a genetic context other than the wheat one. Markers of the rye genome (HMW and ω-secalins) were identified in all of the triticale lines, but they originated either from the 4x or from the 8x parent, or from both. Chromosomes 4A, 1B, and 2R, present in both parents, showed the same banding patterns in all progenies. Chromosomes 1R and 5R, present in both parents, showed heterogeneous labelling. The expression of chromosomes 6A, 1D, and 4D, present in the 8x parent only, was more complex with a possible involvement of a regulatory system. Several hexaploid progenies had introgressed part of the D genome, suggesting that crossing 8x and 4x triticale was a practicable approach for transferring D chromosomes into hexaploid triticale.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00226878
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  • 5
    Electronic Resource
    Electronic Resource
    Linkage between RFLP markers and genes affecting kernel hardness in wheat (1996)
    Springer
    Theoretical and applied genetics 93 (1996), S. 580-586 
    Details
    ISSN: 1432-2242
    Keywords: Kernel hardness ; Wheat ; RFLP ; QTL ; Puroindoline
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract A molecular-marker linkage map of wheat (Triticum aestivum L. em. Thell) provides a powerful tool for identifying genomic regions influencing breadmaking quality. A variance analysis for kernel hardness was conducted using 114 recombinant inbred lines (F7) from a cross between a synthetic and a cultivated wheat. The major gene involved in kernel hardness, ha (hard), known to be on chromosome arm 5DS, was found to be closely linked with the locus Xmta9 corresponding to the gene of puroindoline-a. This locus explained around 63% of the phenotypic variability but there was no evidence that puroindoline-a is the product of Ha (soft). Four additional regions located on chromosomes 2A, 2D, 5B, and 6D were shown to have single-factor effects on hardness, while three others situated on chromosomes 5A, 6D and 7A had interaction effects. Positive alleles were contributed by both parents. A three-marker model explains about 75% of the variation for this trait.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00417951
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  • 6
    Electronic Resource
    Electronic Resource
    Linkage between RFLP markers and genes affecting kernel hardness in wheat (1996)
    Springer
    Theoretical and applied genetics 93 (1996), S. 580-586 
    Details
    ISSN: 1432-2242
    Keywords: Key words Kernel hardness ; Wheat ; RFLP ; QTL ; Puroindoline
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract A molecular-marker linkage map of wheat (Triticum aestivum L. em. Thell) provides a powerful tool for identifying genomic regions influencing breadmaking quality. A variance analysis for kernel hardness was conducted using 114 recombinant inbred lines (F7) from a cross between a synthetic and a cultivated wheat. The major gene involved in kernel hardness, ha (hard), known to be on chromosome arm 5DS, was found to be closely linked with the locus Xmta9 corresponding to the gene of puroindoline-a. This locus explained around 63% of the phenotypic variability but there was no evidence that puroindoline-a is the product of Ha (soft). Four additional regions located on chromosomes 2A, 2D, 5B, and 6D were shown to have single-factor effects on hardness, while three others situated on chromosomes 5A, 6D and 7A had interaction effects. Positive alleles were contributed by both parents. A three-marker model explains about 75% of the variation for this trait.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s001220050318
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  • 7
    Electronic Resource
    Electronic Resource
    Peptide-bond distortions and the curvature of α-helices (1986)
    New York : Wiley-Blackwell
    Biopolymers 25 (1986), S. 1087-1093 
    Details
    ISSN: 0006-3525
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: Solvent accessible peptide bonds in proteins exhibit a 1-3° compression of the OCN bond angle and a corresponding expansion of the NCCa bond angle, relative to buried peptide bonds. These changes are consistent with an increase in hydrogen bonding to the carbonyl oxygen accompanying solvent exposure (J. D. Dunitz and F. K. Winkler, (1975) Acta Cryst. B31, 251-263). For amphiphilic structures such as α-helices, systematic differences in peptide-bond geometry between solvent-exposed and buried residues will generate significant curvature. A decrease of 4° in the OCN bond angle between hydrophilic and hydrophobic sides of an amphiphilic helix will lead to smooth bending, with a radius of curvature of about 70 Å. This curvature is in the range observed for α-helices in proteins. Helix curvature is estimated to have only a small effect on the magnitude and direction of the helical dipole moment.
    Additional Material: 4 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/bip.360250609
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  • 8
    Electronic Resource
    Electronic Resource
    Redox processes in polyaniline thin film studied by optical multichannel analysis (1992)
    Chichester [u.a.] : Wiley-Blackwell
    Surface and Interface Analysis 19 (1992), S. 27-32 
    Details
    ISSN: 0142-2421
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Physics
    Notes: Optical multichannel analysis (OMA) was used to follow the kinetics of colour changes in electrochromic polyaniline films when the latter are polarized in an electrolytic medium at different potentials. These colour changes, which are related to the transition from one polymer form to another, are very fast. OMA also allowed us to obtain an apparent value of the film absorption coefficient. In the investigated range (300-800 nm), several absorption phenomena can be displayed which are characteristic of the different polymer forms. Two electrolytic media (1 M HCl and 1 M H2SO4) were compared to investigate the role played by the size of the inserted counter-ion. The overall results allow us to estimate the practical possibility of using polyaniline in electrochromic devices.
    Additional Material: 9 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/sia.740190109
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  • 9
    Electronic Resource
    Electronic Resource
    A technique for obtaining the infrared absorption spectra of high gel rubbers (1956)
    Hoboken, NJ : Wiley-Blackwell
    Journal of Polymer Science 21 (1956), S. 323-324 
    Details
    ISSN: 0022-3832
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Physics
    Additional Material: 1 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/pol.1956.120219815
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  • 10
    Electronic Resource
    Electronic Resource
    Contribution à l'étude de propriétés des molécules d'explosif dans l'état active. II. Volumes molaires des derivés nitrés aromatiques (1983)
    Weinheim : Wiley-Blackwell
    Propellants, Explosives, Pyrotechnics 8 (1983), S. 46-48 
    Details
    ISSN: 0721-3115
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Process Engineering, Biotechnology, Nutrition Technology
    Notes: Les incréments de volumes moléculaires affecté à chaque atome ou groupement d'atomes ont été déterminés sur dix explosifs aromatiques nitrés, tant à l'état cristallin qu'à l'état activé, au sens de la théorie cinétique de la détonation. Comme dans le cas des esters nitriques, on constate que seuls les groupements explosophores sont comprimés, ainsi que le groupe phénol. Les autres atomes ou groupements ont des volumes voisins de ceux déterminés dans les cristaux d'après les règles d'additivité établies récemment dans les solides cristallins.
    Additional Material: 4 Tab.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/prep.19830080204
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