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  • 1
    Electronic Resource
    Electronic Resource
    s.l. : American Chemical Society
    Journal of the American Chemical Society 70 (1948), S. 760-763 
    ISSN: 1520-5126
    Source: ACS Legacy Archives
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
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  • 2
    Electronic Resource
    Electronic Resource
    Springer
    Cellular and molecular life sciences 44 (1988), S. 951-960 
    ISSN: 1420-9071
    Keywords: Embryology ; atrioventricular septal defect ; endocardial cushions ; double inlet left ventricle ; conduction tissues
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Notes: Summary In the past, it has often been the case that congenital malformations have been categorized in terms of their presumed embryologic development. The knowledge of development, however, has itself often been derived from studies of the normal heart during its development coupled with inferences drawn from the morphology of the abnormal hearts. This can lead to circular thinking which, often, has little basis in fact. It is our belief that cardiac embryology is an important science which should stand in its own right, but that knowledge of abnormal development should be derived from observation rather than inference. The potential dangers of concepts derived by extrapolation are illustrated with reference to hearts having deficiencies of atrioventricular septation (‘endocardial cushion defects’) and those with double inlet left ventricle (‘single ventricle’). It is shown that description of these hearts is greatly facilitated by eschewing those concepts derived from ‘armchair embryology’. Once a clear description is established, the scene is set to understand the real mechanisms underscoring the maldevelopment of these lesions.
    Type of Medium: Electronic Resource
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  • 3
    Electronic Resource
    Electronic Resource
    s.l. : American Chemical Society
    The @journal of physical chemistry 〈Washington, DC〉 60 (1956), S. 939-943 
    Source: ACS Legacy Archives
    Topics: Chemistry and Pharmacology , Physics
    Type of Medium: Electronic Resource
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  • 4
    Electronic Resource
    Electronic Resource
    Oxford, UK : Blackwell Publishing Ltd
    Journal of food science 43 (1978), S. 0 
    ISSN: 1750-3841
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition , Process Engineering, Biotechnology, Nutrition Technology
    Notes: The effects of the addition of d,l-methionine on the biological value of textured soy protein (TSP) and mixtures of TSP and beef were studied. The biological value of soy protein, as measured by the PER method, is increased by the addition of d,l-methionine to TSP. The optimum level of addition of d,l-methionine is approximately 1.0% based on the protein content of the soy product. This level of addition causes a minor problem in flavor of ensuing products and a noticeable disagreeable odor during the cooking of some products. Mixtures of beef (two parts) extended with one part by weight of hydrated TSP (two parts water, one part dehydrated TSP by weight) had PER Values as high as similar mixtures containing added d,l-methionine. Variations in the PER between laboratories on identical samples made quantitative comparison difficult. As in a previous investigation of parameters influencing the PER of proteins, inconsistency in results between different laboratories on identical samples was encountered.
    Type of Medium: Electronic Resource
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  • 5
    Electronic Resource
    Electronic Resource
    Springer
    Protoplasma 83 (1975), S. 15-26 
    ISSN: 1615-6102
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Summary Electron microscopic examination, using glutaraldehyde and osmium tetroxide as fixatives, has revealed the existence of a unique structure, the filamentous ascospore inclusion (FAI), in the sporoplasm of developing ascospores ofAscobolus stercorarius. The FAI, a highly ordered aggregate of 80–125 å diameter, rigid, filamentous tubules, is examined as to structure and origin; in particular, certain evidence suggesting these structures are the aggregated form of the intra-nuclear spindle is discussed. The functional role of the FAI is considered in relation to the current literature; a bifunctional role in the apothecium is considered in light of the occurrence of an additional class of filamentous structure in other differentiated elements of the ascocarp.
    Type of Medium: Electronic Resource
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  • 6
    Electronic Resource
    Electronic Resource
    Springer
    Cellular and molecular life sciences 27 (1971), S. 1063-1064 
    ISSN: 1420-9071
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Notes: Résumé Des plexus fluorescents de nerfs dans les valvules du cœur du Cobaye sont décrits. Bien que du tissu musculaire et des nerfs cholinergiques fussent présents dans les valvules atrioventriculaires, les nerfs adrénergiques de la valvule pulmonaire ne se rapportaient qu'au tissu connectif fibreux. Puisque dans cette situation il n'y a pas d'emplacement effecteur évident ou que ces nerfs influencement des nerfs dont la présence n'est pas révélée par des techniques de cholinesterase ou qu'ils sont de caractère afférent.
    Type of Medium: Electronic Resource
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  • 7
    Electronic Resource
    Electronic Resource
    Springer
    Journal of low temperature physics 101 (1995), S. 453-455 
    ISSN: 1573-7357
    Keywords: 67.70.+n ; 67.60.Fp ; 64-30.+t
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract The velocities of third sound in superfluid4He films containing submonolayer densities of3He are calculated from the variation of film height with the concentration of3He. The present model assumes that the population of the first-excited, transverse, surface state of the3He impurities directly increases the height of the film because these atoms are preferentially found within the film rather than on the surface. The relative populations of the ground-state and the first excited-state are calculated from a many-body, mean-field theory which takes account of the first two transverse branches of the spectra of the states. Intermolecular and one-ripplon exchange interactions are included. Graphs of the variation of third-sound velocity with3He density are given.
    Type of Medium: Electronic Resource
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  • 8
    Electronic Resource
    Electronic Resource
    Springer
    Journal of low temperature physics 60 (1985), S. 1-7 
    ISSN: 1573-7357
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract The chemical potential, energy, and heat capacity of a spin-1/2, ideal Fermi gas are calculated for two-dimensional constraint of the translational motion. Numerical calculations are made of the heat capacity for values of the basic physical parameters corresponding to solutions of3He in monolayers of4He in the fields of superconducting magnets. The results are displayed graphically and the main features of the heat capacity curves are discussed.
    Type of Medium: Electronic Resource
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  • 9
    Electronic Resource
    Electronic Resource
    Springer
    Journal of low temperature physics 113 (1998), S. 311-316 
    ISSN: 1573-7357
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract The discovery that 3 He was occupying transverse excited states at submonolayer coverages in 3 He-4 He mixture films on a Nuclepore substrate, was a surprise. In this note we discuss the relationship between theory and experiment in attempting to understand the physics of this behavior. We first discuss various single-atom-limit calculations of the level spacing between the ground-state and first excited state. We then introduce a free, quasi-particle picture for analyzing experimental magnetization step data and compare those results with the single-atom-limit calculations. The experiments clearly show excited state occupation at submonolayer coverages in contradistinction with the calculations. We then briefly discuss a microscopic, semi-phenomenological theory which, in agreement with experiment, yields 3 He occupation of the first excited state at submonolayer coverages. The mechanism is a model 3 He-3 He effective interaction due to one ripplon exchange. This effective interaction is density dependent and very long ranged. It strongly modifies the small-k properties of the 3 He self-energy and, in particular, causes the ground-state to first excited state level spacing to decrease with increasing 3 He areal density.
    Type of Medium: Electronic Resource
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  • 10
    Electronic Resource
    Electronic Resource
    Springer
    Journal of low temperature physics 116 (1999), S. 85-98 
    ISSN: 1573-7357
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract Third sound speeds in 3 He- 4 He thin films are sensitive to the transverse single-particle state occupied by the 3 He. The third sound speed in the low coverage region with the 3 He occupying the transverse ground-state can be understood quantitatively. The onset of occupation of the first excited transverse state is signaled by a high coverage feature in the third sound speed. Three third sound models for the high coverage region, differing in their assumptions about the spatial distribution of the excited states, are introduced. Using the experimental third sound data, these models can also be used to infer the fractional population of the 3 He in the first excited state as a function of coverage. It is found that the third sound analyses each predict a larger fractional population in the first excited state at monolayer completion than a recent analysis of magnetization step data taken on the same system.
    Type of Medium: Electronic Resource
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