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  • 1
    Electronic Resource
    Electronic Resource
    Chromosome numbers, genome sizes, cell volumes and evolution of snake-head fish (family Channidae) (1988)
    Oxford, UK : Blackwell Publishing Ltd
    Journal of fish biology 33 (1988), S. 0 
    Details
    ISSN: 1095-8649
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Biology
    Notes: Chromosome number, C-value and cell volume studies were carried out on three species of the genus Channa, viz., C. punctatus, C. striatus and C. gachua. The chromosome number, karyotypic structure and DNA content per cell along with cell volume are reported and described. A series of chromosomal rearrangements are established in three different karyotypes along with polyploidy. Both pericentric inversion and Robertsonian fusion played a major role in chromosome rearrangements. The nuclear DNA content of these three species is within 19-29% of the present-day placental mammals, and is thus lower than the median amount for fishes in general and teleosts in particular. Their lower DNA content suggests that the three species of the family Channidae are highly specialized, and this is supported by their known morphologic, reproductive, behavioural and ecological characteristics.The evolutionary significance of these chromosomal rearrangements, their origin and their mode of establishment are discussed. A probable phylogenetic model based on karyotype, C-value and chromosomal rearrangements of the genus is presented.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1095-8649.1988.tb05523.x
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  • 2
    Electronic Resource
    Electronic Resource
    Radiation-Induced Order-Disorder Transformations (1985)
    s.l. ; Stafa-Zurich, Switzerland
    Materials science forum Vol. 3 (Jan. 1985), p. 335-352 
    Details
    ISSN: 1662-9752
    Source: Scientific.Net: Materials Science & Technology / Trans Tech Publications Archiv 1984-2008
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Type of Medium: Electronic Resource
    URL: http://www.tib-hannover.de/fulltexts/2011/0528/02/03/transtech_doi~10.4028%252Fwww.scientific.net%252FMSF.3.335.pdf
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  • 3
    Electronic Resource
    Electronic Resource
    On Clustering and Ordering Instabilities in FCC Solid Solutions (1985)
    s.l. ; Stafa-Zurich, Switzerland
    Materials science forum Vol. 3 (Jan. 1985), p. 111-121 
    Details
    ISSN: 1662-9752
    Source: Scientific.Net: Materials Science & Technology / Trans Tech Publications Archiv 1984-2008
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Type of Medium: Electronic Resource
    URL: http://www.tib-hannover.de/fulltexts/2011/0528/02/03/transtech_doi~10.4028%252Fwww.scientific.net%252FMSF.3.111.pdf
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  • 4
    Electronic Resource
    Electronic Resource
    Depletion of singlet and triplet states of 1-amino-5, 6, 7, 8-tetrahydronaphthalene due to external heavy-atom perturbation (1986)
    Springer
    Il nuovo cimento della Società Italiana di Fisica 8 (1986), S. 541-552 
    Details
    ISSN: 0392-6737
    Keywords: Photochemistry and radiation chemistry
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Description / Table of Contents: Riassunto Si riporta lo spegnimento di luminescenza dell' l-amino-5, 6, 7, 8-tetraidronaftalene (ATHN) in solventi non polari e polari a 300 K e 77 K mediante i cloroalcani tetracloruro di metilene (CH2Cl2). Si determinano diversi parametri fotofisici a 77 K di ATHN fluorescente perturbato e non perturbato in soluzioni ternarie. La constante (K q) del valore di smorzamento di fluorescenza dinamico bimolecolare aumenta con l'affinità elettronica (EA) degli spegnitori ed esiste una correlazione lineare tra lnK q ed EA. Lo spegnimento dipende dalla polarità dei solventi. Lo spegnimento è attribuito all'exciplex CT di contatto formato tra cloroalcani e ATHN a singoletti eccitati.
    Notes: Summary Quenching of luminescence of 1-amino-5, 6, 7, 8-tetrahydronaphthalene (ATHN) in nonpolar and polar solvents at 300 K and 77 K by the chloroalkanes carbon tetrachloride (CCl4), methyl chloroform (CH3CCl3), chloroform (CHCl3) and methylene chloride (CH2Cl2) is reported. Different photophysical parameters at 77 K of unperturbed and perturbed fluorescer ATHN in ternary solutions are determined. The bimolecular dynamic fluorescence quenching rate constant (K q) increases with the electron affinity (EA) of the quenchers and a linear correlation exists between lnK q and EA. The quenching depends on polarity of solvents. The quenching is ascribed to contact CT exciplex formed between chloroalkanes and excited singlet ATHN.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02450616
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  • 5
    Electronic Resource
    Electronic Resource
    Homoepitaxial films grown on Si (100) at 150 °C by remote plasma-enhanced chemical vapor deposition (1989)
    Woodbury, NY : American Institute of Physics (AIP)
    Applied Physics Letters 55 (1989), S. 1885-1887 
    Details
    ISSN: 1077-3118
    Source: AIP Digital Archive
    Topics: Physics
    Notes: Low-temperature silicon epitaxy is critical for future generation ultralarge scale integrated circuits and silicon-based heterostructures. Remote plasma-enhanced chemical vapor deposition has been applied to achieve silicon homoepitaxy at temperatures as low as 150 °C, which is believed to be the lowest temperature reported to date. Critical to the process are an in situ remote plasma hydrogen cleaning of the substrate surface in an ultrahigh vacuum growth chamber prior to epitaxy, and substitution of thermal energy by remote plasma excitation via argon metastables and energetic electrons to dissociate silane and increase adatom mobility on the surface of the silicon substrate. Excellent crystallinity with very few defects such as dislocations and stacking faults is observed.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.102161
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  • 6
    Electronic Resource
    Electronic Resource
    Two cases of pseudosarcomatous invasive transitional cell carcinoma of the urinary bladder mimicking malignant fibrous histiocytoma (1989)
    Oxford, UK : Blackwell Publishing Ltd
    Histopathology 15 (1989), S. 0 
    Details
    ISSN: 1365-2559
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Medicine
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1365-2559.1989.tb03045.x
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  • 7
    Electronic Resource
    Electronic Resource
    Angiotropic lymphoma presenting in the prostate (1988)
    Oxford, UK : Blackwell Publishing Ltd
    Histopathology 12 (1988), S. 0 
    Details
    ISSN: 1365-2559
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Medicine
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1365-2559.1988.tb01991.x
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  • 8
    Electronic Resource
    Electronic Resource
    Malignant melanoma with neuroendocrine differentiation: clinical, histological, immunohistochemical and ultrastructural features of three cases (2005)
    Oxford, UK : Blackwell Science Ltd
    Histopathology 47 (2005), S. 0 
    Details
    ISSN: 1365-2559
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Medicine
    Notes: Aim : To document the clinical, histological, immunohistochemical and ultrastructural features of three malignant melanomas showing neuroendocrine differentiation.Methods and results : Three patients, two with primary cutaneous melanoma and one with nasal mucosal melanoma, subsequently developing or simultaneously presenting with metastatic malignant melanoma, were studied by conventional histological technique, immunohistochemistry of formalin-fixed paraffin-wax embedded tissues, and electron microscopy of epoxy-resin-embedded tumour tissue. Tumours showed either small cell or conventional malignant melanoma cell morphology. One of the three primary melanocytic lesions (the nasal melanoma) exhibited neuroendocrine differentiation immunohistochemically. All three metastatic malignant melanomas showed, in varying combinations, immunohistochemical and ultrastructural evidence for neuroendocrine differentiation: they were positive for the melanocytic markers, S100 protein, HMB-45, Melan-A and tyrosinase, and the neuroendocrine markers chromogranin, synaptophysin and neurofilament protein. Ultrastructural study in two of the metastases revealed neuroendocrine granules but no lattice-bearing melanosomes.Conclusions : The cases described are the most comprehensively investigated malignant melanomas showing neuroendocrine differentiation to date, and the first to document neuroendocrine differentiation ultrastructurally in these tumours. Malignant melanoma with neuroendocrine differentiation therefore needs to be recognized among the other, better known variants of malignant melanoma.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1365-2559.2005.02240.x
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  • 9
    Electronic Resource
    Electronic Resource
    The dynamics of periodically driven bubble clouds (1988)
    [S.l.] : American Institute of Physics (AIP)
    Physics of Fluids 31 (1988), S. 3519-3531 
    Details
    ISSN: 1089-7666
    Source: AIP Digital Archive
    Topics: Physics
    Notes: An averaged two-fluid model is used to study the motion of a cloud of bubbles. The linearized equations of motion are shown to be a wave equation with both dissipation and dispersion. The fully nonlinear equations are also examined and it is demonstrated that the cutoff frequency of the cloud is equal to the natural frequency of a single bubble. The steady linear response of a periodically driven bubble cloud is then derived. Resonances are seen to arise when the driving frequency is below the cutoff frequency. The inner core of the cloud is shielded by an outer layer when the driving is above the cutoff frequency. The nonlinear dynamics of periodically driven bubble clouds is studied numerically. It is found that the cutoff frequency is crucial in determining whether or not the cloud will behave like a single bubble. Also, under some conditions the cloud is seen to behave like a damped and driven single-degree-of-freedom Hamiltonian system.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.866919
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  • 10
    Electronic Resource
    Electronic Resource
    Erratum: "The dynamics of periodically driven bubble clouds'' [Phys. Fluids 31, 3519 (1988)] (1989)
    New York, NY : American Institute of Physics (AIP)
    Physics of Fluids 1 (1989), S. 898-898 
    Details
    ISSN: 1089-7666
    Source: AIP Digital Archive
    Topics: Physics
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.857559
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