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  • Oenothera grandiflora  (1)
  • Polarization functions  (1)
  • Thyroid disease  (1)
  • 1
    Electronic Resource
    Electronic Resource
    Tetrahedral lobe functions (1981)
    Springer
    Theoretical chemistry accounts 59 (1981), S. 291-297 
    Details
    ISSN: 1432-2234
    Keywords: Tetrahedral lobes ; Methane ; Ethane ; Cusped-Gaussian basis ; Polarization functions
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Notes: Abstract The representation of atomic p orbitals in terms of tetrahedral Gaussian lobe functions is shown to be a viable alternative to more conventional representations in terms of cartesian Gaussians or octahedral lobe functions. Fairly accurate SCF calculations for the methane and ethane molecules show that the flexibility of the tetrahedral representation can be used to introduce a degree of polarization into the atomic basis in a molecular environment. Combined with the use of molecular bond functions, this flexibility provides an economical description of polarization effects in molecules.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00551356
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    Paper (German National Licenses)
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  • 2
    Electronic Resource
    Electronic Resource
    Comparison and histopathological correlation of three parathyroid imaging methods in a population with a high prevalence of concomitant thyroid diseases (1997)
    Springer
    European journal of nuclear medicine 24 (1997), S. 143-149 
    Details
    ISSN: 1619-7089
    Keywords: Primary hyperparathyroidism ; Thyroid disease ; Thallium-201 ; technetium-99m subtraction scintigraphy ; Technetium-99m sestamibi dual-phase study ; Uptake mechanisms
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract The aim of this prospective study was to evaluate the diagnostic utility of a technetium-99m sestamibi dual-phase protocol enhanced by single-photon emission tomography (SPET) and semiquantitative analysis in comparison to established preoperative staging procedures in patients with primary hyperparathyroidism. Twenty-eight (50%) out of 56 patients had superimposed thyroid disease, and 12 patients had previously undergone neck surgery. Visual and semiquantitative analysis of planar99mTc-sestamibi dual-phase imaging, SPET of the delayed phase, ultrasonography, and thallium-201 chloride-technetium-99m pertechnetate subtraction scintigraphy was further correlated with the histopathological examination of the surgical specimens.99mTc-sestamibi dual-phase imaging achieved the highest sensitivity for side localization and precise localization compared with201Tl-99mTc subtraction scintigraphy and ultrasonography, but the differences reached statistical significance only in comparison to ultrasonography. Semiquantitative analysis did not enhance sensitivity. Adenoma detection by99mTc-sestamibi dual-phase imaging was only correlated to serum calcium levels and osteocalcin, not to cell density or oxyphil cell count (SPET yielded additional information for the exact topographical localization of the parathyroid tumour in 22 (39%) patients with superimposed thyroid disease or previous neck surgery but did not enhance the overall detection rate.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02439546
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    Paper (German National Licenses)
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  • 3
    Electronic Resource
    Electronic Resource
    Cytological analysis of complex-heterozygotes in populations ofOenothera grandiflora (Onagraceae) in Alabama (1993)
    Springer
    Plant systematics and evolution 184 (1993), S. 77-87 
    Details
    ISSN: 1615-6110
    Keywords: Onagraceae ; Oenothera grandiflora ; O. biennis ; O. villosa ; Chromosome arrangements ; complex-heterozygotes ; incompatibility alleles ; populations ; Flora of Alabama
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract Genetic analysis of unusual complex-heterozygous genotypes in populations ofO. grandiflora from Alabama (USA) has shown that these strains are composed of a typicalgrandiflora (B) complex and an altered B complex (designated as BA) which probably contains genetic elements derived from an A genotype such as the beta complex ofO. biennis group 1. Analysis of the meiotic configurations of artificial hybrids between the new strains and a series of complexes of known segmental arrangement allowed determination of the arrangements of the unknown complexes. These data are evidence for origin of the altered B complexes.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00937779
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    Paper (German National Licenses)
    Fulltext
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