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  • Springer  (13)
  • Oxford University Press  (2)
  • American Chemical Society (ACS)
  • 2010-2014
  • 1970-1974  (15)
  • 1945-1949
  • 1974  (15)
  • 1
    Electronic Resource
    Electronic Resource
    Stability results for topological spaces (1974)
    Springer
    Mathematische Zeitschrift 140 (1974), S. 1-21 
    Details
    ISSN: 1432-1823
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mathematics
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01218642
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  • 2
    Electronic Resource
    Electronic Resource
    Isolation and characterization of prosthecae ofAsticcacaulis biprosthecum (1974)
    Springer
    Archives of microbiology 96 (1974), S. 1-16 
    Details
    ISSN: 1432-072X
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract Prosthecae were sheared from cells ofAsticcacaulis biprosthecum with a Sorvall omnimixer and purified by centrifugation. Removal of prosthecae resulted in no loss in viability. Purified prosthecae contain protein, carbohydrates and lipids. Certain enzymes that are present in the main body of the cell are also present in prosthecae: malic dehydrogenase (E.C. 1.1.1.37), alkaline phosphatase (E. C. 3.1.3.1), succinic dehydrogenase (E.C. 1.3.99.1), cytochromec reductase (E.C. 1.6.2.a), and cytochromes. Other enzymes present in whole cells are not in prosthecae: isocitric dehydrogenase (E.C. 1.1.1.41), NADH oxidase (E.C. 1.6.99.3), glucose-6-phosphate dehydrogenase (E.C. 1.1.1.49), and lactic dehydrogenase (E.C. 1.1.2.3). Swarmer cells (non-prosthecate) were purified by allowing prosthecate cells to attach to cheesecloth in the growth medium. Envelopes prepared from prosthecae were compared with envelope from swarmer cells. The two envelope fractions differed in the disc-gel electrophoretic patterns of proteins solubilized from them.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00590158
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  • 3
    Electronic Resource
    Electronic Resource
    Strongly Hausdorff spaces (1974)
    Springer
    Acta mathematica hungarica 25 (1974), S. 245-248 
    Details
    ISSN: 1588-2632
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mathematics
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01886080
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  • 4
    Electronic Resource
    Electronic Resource
    The anodic behaviour of porous zinc electrodes. II. The effects of specific surface area of the zinc compact material (1974)
    Springer
    Journal of applied electrochemistry 4 (1974), S. 75-80 
    Details
    ISSN: 1572-8838
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology , Electrical Engineering, Measurement and Control Technology
    Notes: Abstract A study has been made of the galvanostatic polarization behaviour of porous zinc electrodes as a function of electrode surface area. Correlations have been established between the electrode polarization parameters and surface areas as measured by BET and methylene blue adsorption methods.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00615908
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  • 5
    Electronic Resource
    Electronic Resource
    Preparation of ultra-oriented, high-strength filaments of polyethylene (1974)
    Springer
    Journal of materials science 9 (1974), S. 389-397 
    Details
    ISSN: 1573-4803
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Notes: Abstract A strong, transparent high-density polyethylene morphology has been produced in an Instron capillary rheometer by orientation and pressure near the polymer ambient melting point, 130 to 136
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00737838
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  • 6
    Electronic Resource
    Electronic Resource
    Book reviews (1974)
    Springer
    Higher education 3 (1974), S. 365-376 
    Details
    ISSN: 1573-174X
    Source: Springer Online Journal Archives 1860-2000
    Topics: Nature of Science, Research, Systems of Higher Education, Museum Science
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00168215
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  • 7
    Electronic Resource
    Electronic Resource
    Soil fumigation and zinc status of soils in relationship to potato speckle-bottom disease development and control (1974)
    Springer
    Potato research 17 (1974), S. 307-319 
    Details
    ISSN: 1871-4528
    Source: Springer Online Journal Archives 1860-2000
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Description / Table of Contents: Zusammenfassung Die Blattkrankheit ‘Potato speckle-bottom’ (PSB) wird charakterisiert durch kleine bis grosse nekrotische Läsionen (Abb. 1), die sich zuerst an den untern Blättern entwickeln, gefolgt von Chlorose und eventuelle Blattfall. Es scheint, dass die Krankheit teilweise von einem Zinkmangel herrührt und durch Beifügung von Zinksulphat zu der Düngergabe gemindert werden könnte (Tabelle 2). Bodenbegasung mit einer nematiziden Dichloropropen-Dichloropropan-Mischung (D-D ®) verminderte ebenfalls die Symptome (Tabelle 2), und es gab einen Hinweis, dass diese Bodenbehandlung, zusätzlich zu ihren nematiziden Wirkungen, das verfügbare Zink im Boden vemehrte (Tabelle 4). Die Erträge wurden meistens durch Zinkgaben in den Boden und durch Bodenbegasung erhöht, dies entweder bei getrennter oder-optimal-bei gemeinsamer Anwendung (Abb. 2, Tabellen 1 und 3), obwohl die Sorte FL 483 eine geringe Verbesserung beim Fehlen der Nematizidbehandlung zeigte. Anbaumethoden wurden in Hinblick auf die Bekämpfung oder Eliminierung der PSB-Krankheit diskutiert.
    Abstract: Résumé La maladie du feuillage ‘potato speckle-bottom’ (PSB) est caractérisée par des lésions nécrotiques petites à grandes (fig. 1) qui se développent d'abord à la base du feuillage, et qui sont suivies par un chlorose et une éventuelle abscission. La maladie semble résulter partiellement d'une déficience en zinc et peut être atténuée par l'incorporation de sulfate de zinc dans les engrais appliqués (tableau 2). La fumigation du sol avec le nématodicide ‘melange de dichloropropenedichloropropane’ (D-DR) atténue aussi les symptômes (tableau 2) et il y a quelque indication que ce traitement du sol, outre ses effets nématodicides, augmente le zinc disponible dans le sol (tableau 4). L'application au sol de zinc et la fumigation accroissent habituellement les rendements, soit séparément, ou mieux en conjonction (fig. 2, tableaux 1 et 3) toutefois il y aurait peu d'amélioration chez la variété FL 483 en l'absence de traitement nématodicide. Les auteurs discutent des pratiques culturales en fonction de la lutte ou de l'élimination de la maladie PSB.
    Notes: Summary Results from field experiments in Alabama concerning potato speckle-bottom (PSB) disease are reported. These revealed that soil fumigation with D-D ® and zinc deficiency were involved in the correction and induction of PSB symptoms, respectively. Yield and soil test data are presented, and cultural practices are discussed with respect to control or elimination of PSB disease.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02360324
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  • 8
    Electronic Resource
    Electronic Resource
    Structure of rat liver sinusoids and associated tissue spaces as revealed by scanning electron microscopy (1974)
    Springer
    Cell & tissue research 148 (1974), S. 111-125 
    Details
    ISSN: 1432-0878
    Keywords: Liver ; Sinusoids ; Kupffer cells ; Spaces of Disse ; Scanning electron microscopy
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Notes: Summary The inner surface of sinusoids and adjacent hepatocytes have been examined by scanning electron microscopy. The endothelial cells lining the sinusoids show large numbers of fenestrations which vary greatly in size and arrangement. Some are very small (0.1 μm) and arranged in clusters; others that are much larger (∼1.0 μm) are subdivided by slender strands of cytoplasm. At sites where the larger fenestrae are present it is evident that the endothelial lining of the sinusoid is double. This may represent a kind of structural assurance against complete breakdown of what seems to be a very thin and fragile endothelial wall. Junctions between adjacent endothelial cells have not been found in these preparations. The open continuity of the sinusoid is occasionally interrupted by slender extensions of cells morphologically distinct from the thin fenestrated endothelial cells. These possess a characteristically textured surface and are thought to represent stellate Kupffer cells. The SEM images describe the subendothelial Spaces of Disse as being larger and as having more extensive ramifications than is generally evident from transmission micrographs. The space, limited on one side by the hepatocyte with numerous microvilli and on the other by endothelial cells, appears actually to be only part of an extensive labyrinth of intercellular channels. These connect the more discrete Spaces of Disse and extend into the narrower spaces between the hepatocytes. The total effect of this system is to expose the greater part of the liver cell surface to the blood filtrate. Microvilli populate the hepatocyte surfaces except for narrow margins which border the bile canaliculi. Whether their presence coincides with the adsorbing surfaces and their absence with secreting surfaces can be decided best by experimental studies.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00224322
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  • 9
    Electronic Resource
    Electronic Resource
    Developments in apparatus for dynamicin vitro testing of human muscle (1974)
    Springer
    Medical & biological engineering & computing 12 (1974), S. 654-663 
    Details
    ISSN: 1741-0444
    Keywords: Dynamicin vitro testing of human muscle
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Chemistry and Pharmacology , Medicine
    Description / Table of Contents: Sommaire La première partie de cet article (Fay et al. 1974) présente l'acquis des travaux et suggère la conception d'un appareil permettant de fixer et de stimuler un petit spécimen de muscle dans un entourage contrôté. L'appareil décrit comprend une commande électrique et un transduceur à la fois de force et de déplacement. Cette partie concluante décrit le contrôle et la mise en séquence du système.
    Abstract: Zusammenfassung Der erste Teil dieser Arbeit (vonFay u.a., 1974) zeigte die Vorgeschichte der Arbeitet auf und stellte eine Apparatekonstruktion zum Einspannen und Stimulieren kleiner Muskelproben in kontrollierter Umgebung vor. Das beschriebene Gerät hatte eine elektrische Betätigung sowie Meßwandler fûr Kraft und Verlagerung. Dieser abschließende Teil zeigt, wie das System geschalten und in Folge geschaltet wird.
    Notes: Abstract The first part of this paper (Fay et al., 1974) presented the background to the work and put forward a design for apparatus for clamping and stimulating a small muscle specimen in a controlled environment. The apparatus described included an electromagnetic actuator and both force and displacement transducers. This concluding part shows how the system is controlled and sequenced.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02477228
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  • 10
    Electronic Resource
    Electronic Resource
    Developments in apparatus for dynamicin vitro testing of human muscle (1974)
    Springer
    Medical & biological engineering & computing 12 (1974), S. 647-653 
    Details
    ISSN: 1741-0444
    Keywords: Dynamicin vitro testing of human muscle
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Chemistry and Pharmacology , Medicine
    Description / Table of Contents: Sommaire Des instruments servant à améliorer la validité des données de tests dynamiques obtenues sur des spécimens de muscles d'humains ont été développés. Dans la première partie de cet article, on donne l'acquis et on décrit un appareil permettant de monter et de fixer un petit spécimen de muscle afin de le rendre disponible aux expériences en moins d'une minute. La seconde partie décrit un instrument de contrôle de durée et de mise en séquence, capable de contrôler les stimulations mécaniques et électriques infligées au spécimen. Les déplacements mécaniques sont contrôlés par un type de servo mécanisme pouvant être entraîné par un magnétophone à fréquence modulée.
    Abstract: Zusammenfassung Zur Verbesserung der Bedeutung dynamischer Testdaten aus menschlichen Muskelproben wurden gewisse Apparate und Instrumente entwickelt. Im ersten Teil dieser Arbeit wird die Vorgeschichte aufgezeigt und ein Apparat zum Einspannen und Aufspannen beschrieben, mit dem kleine Muskelproben in weniger als einer Minute für die Prüfung vorbereitet werden können. Der zweite Teil beschreibt einen neuen Impulsgeber und eine Folgeschaltung zur Regulierung der elektrischen und mechanischen Stimulationen, die auf die Probe angewandt werden. Die mechanische Verschiebung wird durch eine Art Servomechanismus gesteuert, der über ein FM-Bandgerät angetrieben wird.
    Notes: Abstract Some apparatus and instrumentation have been developed for improving the relevance of dynamic test data obtained from human muscle specimens. In the first part of this paper the background is given and a special clamping and mounting arrangement is described which allows a small specimen to be made ready for test in less than a minute. The second part describes a new timing and sequencing instrument for regulating the electrical and mechanical stimulations applied to the specimen. The mechanical displacements are controlled by a type of servomechanism which can be driven from an f.m. tape recorder.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02477227
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