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  • 1
    Electronic Resource
    Electronic Resource
    Chronic anisakiasis presenting as a mesenteric mass (2000)
    Springer
    Abdominal imaging 25 (2000), S. 548-550 
    Details
    ISSN: 1432-0509
    Keywords: Key words: Anisakis—Chronic disease—Mesentery—Computed tomography—Ultrasonography.
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract Chronic anisakiasis is a rare entity, and its diagnosis is difficult. We report a case of chronic anisakiasis with multiple gastrointestinal manifestations presenting as a palpable mesenteric mass, diagnosed by specific serology and histologic findings. We describe the computed tomographic appearance of this mass and the pathologic correlations. To our knowledge, this is the first time this mesenteric location has been detected by imaging before surgery.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1107/s002610000089
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  • 2
    Electronic Resource
    Electronic Resource
    Succinic and malic dehydrogenase histochemical activities in cerebral, cerebellar and neostriatum sections incubated in presence of d-amphetamine (1985)
    Springer
    Acta neuropathologica 67 (1985), S. 81-85 
    Details
    ISSN: 1432-0533
    Keywords: Succinic dehydrogenase ; Malic dehydrogenase ; d-Amphetamine ; Nervous system ; Histochemistry
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary The action of d-amphetamine on the histochemical activities of succinic and malic dehydrogenases in sections of cerebral cortex, cerebellum, and neostriatum has been studied. Meldola blue was used as an exogenous electron carrier in the histochemical reactions. The results have demonstrated that d-amphetamine increases the activity of the enzymes studied.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00688127
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  • 3
    Electronic Resource
    Electronic Resource
    Immunoglobulin kappa light-chain V, J, and C gene sequences of the owl monkey Aotus nancymaae (2000)
    Springer
    Immunogenetics 51 (2000), S. 212-218 
    Details
    ISSN: 1432-1211
    Keywords: Key words Aotus nancymaae ; Immunoglobulin kappa light chain (IGK) genes
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Notes: Abstract  Sequences of Aotus nancymaae immunoglobulin kappa light-chain rearrangements were analyzed after reverse transcription polymerase chain reaction. Among 22 in-frame rearrangements analyzed, 12 IGKV genes belonging to the families 1, 2, or 3 were identified. Aotus counterparts for all five human IGKJ genes were found. The identity of the deduced human and Aotus amino acid sequences was between 83% and 92% for junctional regions and 74% for the constant region. Sequence comparisons between rearrangements indicated that somatic mutations, the addition of nongermline-encoded nucleotides, and exonuclease trimming contribute to the generation of diversity of Aotus immunoglobulin kappa chains. The high identity of Aotus and human IGK genes is comparable to that of T-cell receptor genes and further supports the proposal to use the Aotus Plasmodium falciparum infection model for the evaluation of malaria vaccine candidates.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s002510050034
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  • 4
    Electronic Resource
    Electronic Resource
    Mutation analysis of glucose-6-phosphate dehydrogenase (G6PD) variants in Costa Rica (1991)
    Springer
    Human genetics 〈Berlin〉 87 (1991), S. 462-464 
    Details
    ISSN: 1432-1203
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Notes: Summary Glucose-6-phosphate dehydrogenase (G6PD) deficiency has previously been reported among both the black and white populations of Costa Rica. All 28 G6PD A — samples were found to be of the common G6PD A-376G/202Atype. A previously described mutation associated with nonspherocytic hemolytic anemia, G6PD Puerto Limón, was found to be due to a G→A transition at nucleotide (nt) 1192, causing a glu→lys substitution. Mutations in this region of the G6PD molecule seem invariably to be associated with chronic hemolytic anemia. G6PD Santamaria had been described previously in two unrelated white subjects. We found that both did, indeed, have the same mutations. In this variant the A→G substitution at nt 376 that is characteristic of G6PD A was present, but an A→T mutation at nt 542, apparently superimposed on the ancient G6PD A mutation, resulted in an asp→val substitution. Thus, the gain of a negative charge at amino acid 126 was counterbalanced by the loss of a charge at amino acid 181, giving rise to a variant with the G6PD A mutation but with normal electrophoretic mobility.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00197169
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  • 5
    Electronic Resource
    Electronic Resource
    Characterization of a linear DNA plasmid from the filamentous fungal plant pathogen Glomerella musae [Anamorph: Colletotrichum musae (Berk. & Curt.) Arx.] (1997)
    Springer
    Current genetics 32 (1997), S. 152-156 
    Details
    ISSN: 1432-0983
    Keywords: Key words Mitochondria ; TIR ; PCR ; Banana pathogen
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract A 7.4-kilobase (kb) DNA plasmid was isolated from Glomerella musae isolate 927 and designated pGML1. Exonuclease treatments indicated that pGML1 was a linear plasmid with blocked 5′ termini. Cell-fractionation experiments combined with sequence-specific PCR amplification revealed that pGML1 resided in mitochondria. The pGML1 plasmid hybridized to cesium chloride-fractionated nuclear DNA but not to A + T-rich mitochondrial DNA. An internal 7.0-kb section of pGML1 was cloned and did not hybridize with either nuclear or mitochondrial DNA from G. musae. Sequence analysis revealed identical terminal inverted repeats (TIR) of 520 bp at the ends of the cloned 7.0-kb section of pGML1. The occurrence of pGML1 did not correspond with the pathogenicity of G. musae on banana fruit. Four additional isolates of G. musae possessed extrachromosomal DNA fragments similar in size and sequence to pGML1.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s002940050260
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  • 6
    Electronic Resource
    Electronic Resource
    Arsenic Content in Hair of People Exposed to Natural Arsenic Polluted Groundwater at Zimapán, México (1997)
    Springer
    Bulletin of environmental contamination and toxicology 59 (1997), S. 583-589 
    Details
    ISSN: 1432-0800
    Source: Springer Online Journal Archives 1860-2000
    Topics: Energy, Environment Protection, Nuclear Power Engineering , Medicine
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s001289900519
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  • 7
    Electronic Resource
    Electronic Resource
    Finite element analysis of the vibration problem of a plate coupled with a fluid (2000)
    Springer
    Numerische Mathematik 86 (2000), S. 591-616 
    Details
    ISSN: 0945-3245
    Keywords: Mathematics Subject Classification (1991): 65N30, 65N25
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mathematics
    Notes: Summary. We consider the approximation of the vibration modes of an elastic plate in contact with a compressible fluid. The plate is modelled by Reissner-Mindlin equations while the fluid is described in terms of displacement variables. This formulation leads to a symmetric eigenvalue problem. Reissner-Mindlin equations are discretized by a mixed method, the equations for the fluid with Raviart-Thomas elements and a non conforming coupling is used on the interface. In order to prove that the method is locking free we consider a family of problems, one for each thickness $t〉0$ , and introduce appropriate scalings for the physical parameters so that these problems attain a limit when $t\to 0$ . We prove that spurious eigenvalues do not arise with this discretization and we obtain optimal order error estimates for the eigenvalues and eigenvectors valid uniformly on the thickness parameter t. Finally we present numerical results confirming the good performance of the method.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/PL00005411
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  • 8
    Electronic Resource
    Electronic Resource
    Fluids with internal degrees of freedom. I. Extended thermodynamics approach (1987)
    College Park, Md. : American Institute of Physics (AIP)
    The Journal of Chemical Physics 86 (1987), S. 4208-4215 
    Details
    ISSN: 1089-7690
    Source: AIP Digital Archive
    Topics: Physics , Chemistry and Pharmacology
    Notes: Extended irreversible thermodynamics (EIT) is used to derive a complete set of time evolution equations for the state variables describing a general polyatomic fluid. The internal degrees of freedom of the fluid are represented by suitable nonconserved variables. In particular, these time evolution equations are shown to resemble relaxation-type equations. The sign of the unknown coefficients included in such equations is undetermined. However, when a comparison is made with the results obtained from the moment solution method of a kinetic equation for a dilute polyatomic fluid, several of the general features of the phenomenological results are clarified. Indeed, the predictions of kinetic theory fully agree with the basic equations of EIT. This provides a mesoscopic foundation for the theory. The sign of the unknown coefficients appearing in the relaxation-type equations for the nonconserved variables is such that the corresponding relaxation times are positive definite. Therefore, such equations are indeed relaxation equations. Other features of the phenomenological theory are also discussed on the light of the kinetic theoretical results. Further, the usefulness of the theory will be addressed in connection with a subsequent paper where the results here obtained will be used to compute the Rayleigh–Brillouin spectrum for a polyatomic fluid.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.451880
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  • 9
    Electronic Resource
    Electronic Resource
    Fluids with internal degrees of freedom. II. Rayleigh–Brillouin scattering (1987)
    College Park, Md. : American Institute of Physics (AIP)
    The Journal of Chemical Physics 86 (1987), S. 4216-4220 
    Details
    ISSN: 1089-7690
    Source: AIP Digital Archive
    Topics: Physics , Chemistry and Pharmacology
    Notes: The extended thermodynamic treatment developed in part I for a fluid with internal degrees of freedom, is used to calculate its Rayleigh–Brillouin spectrum. A hydrodynamic model is first constructed which involves unspecified phenomenological coefficients. When these coefficients are identified in terms of experimental parameters, reasonably good agreement is obtained between the calculated and measured dynamic structure factor of CS2 at 20 °C with a density 1.262 g/cm3 and for k=8.608×10 cm−1. It is also shown that when the relaxation times of the trace and the nondeviatoric part of the stress tensor of the fluid tend to zero, the results previously derived by Mountain are recovered. The possible connections between this extended thermodynamic approach and Rytov's hydrodynamic theory are also hinted at.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.451881
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  • 10
    Electronic Resource
    Electronic Resource
    First moments of the liquid phase far-infrared absorption cross section and the R(ω) representation of depolarized Rayleigh scattering (1988)
    College Park, Md. : American Institute of Physics (AIP)
    The Journal of Chemical Physics 88 (1988), S. 2264-2272 
    Details
    ISSN: 1089-7690
    Source: AIP Digital Archive
    Topics: Physics , Chemistry and Pharmacology
    Notes: A calculation of the first moment or average frequency ω¯ of the liquid phase far-infrared absorption cross section is presented. The theory also applies to the calculation of the average frequency of the R(ω) representation of depolarized Rayleigh scattering data, where R(ω)=ω[1−exp(−(h-dash-bar)ω/kT)]I(ω). The average frequency is shown to depend on the integral of the imaginary part of the angular derivative correlation function divided by time. A semiclassical relationship between the real and imaginary parts of the correlation function is derived and shown to lead to a series representation of ω¯ in terms of fourth and higher moments of the intensity spectrum. It is demonstrated that the theory reproduces the exact semiclassical result for ω¯ of both the far-IR absorption spectrum and the R(ω) representation of the depolarized Rayleigh wing of linear free rotors. The implications of our theory concerning the comparison of peak frequencies in the far-IR absorption spectrum and the R(ω) representation of the depolarized Rayleigh scattering spectrum are discussed. The theory is able to qualitatively explain the experimentally observed dependence of peak frequency on temperature, concentration, and isotopic substitution. The ratio of the average frequencies of the absorption cross section and the R(ω) representation is shown to depend on the size of the mean square torque compared to (kT)2.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.454059
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