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  • Springer  (23)
  • Berlin, Heidelberg : Springer Berlin Heidelberg  (1)
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  • 1
    Online Resource
    Online Resource
    ESEC '87 : 1st European Software Engineering Conference Strasbourg, France, September 9-11, 1987. Proceedings (1987)
    Berlin, Heidelberg : Springer Berlin Heidelberg
    Details Availability
    Keywords: Computer science ; Software engineering ; Computer Science
    Type of Medium: Online Resource
    Pages: Online-Ressource
    ISBN: 9783540481171
    Series Statement: Lecture Notes in Computer Science 289
    URL: https://doi.org/10.1007/BFb0022092
    URL: https://zbmath.org/?q=an:0626.68002
    DOI: 10.1007/BFb0022092
    RVK:
    SS 4800
    Language: English
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  • 2
    Electronic Resource
    Electronic Resource
    Changes in photosynthetic pigment concentration in seaweeds as a function of water depth (1976)
    Springer
    Marine biology 37 (1976), S. 223-229 
    Details
    ISSN: 1432-1793
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract We conducted a study of the relationship between changes in photosynthetic pigment content and water depth in Great Harbor near Woods Hole, Massachusetts, USA, on the green algae Ulva lactuca and Codium fragile and the red algae Porphyra umbilicalis and Chondrus crispus. A calibrated underwater photometer equipped with spectral band filters measured light attenuation by the water column. The depth required for a 10-fold diminution of photon flux was 3.6, 5.3, 6.0 and 6.0 m for red, blue, yellow and green light, respectively. Seaweeds were attached to vertically buoyed lines and left to adapt for 7 days; then, with their positions reversed, they were allowed to readapt for 7 days. All species showed greater photosynthetic pigment content with increased depth. Further, the ratio of phycobiliproteins and chlorophyll b to chlorophyll a increased with depth. Changes in pigment content were reversible and occurred in the absence of cell division. There was a net loss of pigments near the surface (high irradiance), and subsequent synthesis when seaweeds were transferred to a position deep in the water column (low irradiance). In contrast, seaweeds which were found in intertidal habitats changed only their pigment concentration, and not pigment ratio, a phenomena analogous to higher plant sun and shade adaptation. Therefore, seaweeds modify their photon-gathering photosynthetic antennae to ambient light fields in the water column by both intensity adaptation and complementary chromatic adaptation.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00387607
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    Paper (German National Licenses)
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  • 3
    Electronic Resource
    Electronic Resource
    2,6-Diamino-2,6-Didesoxy-D-Mannose und D-Rhamnosamin aus D-Glukosamin (1965)
    Springer
    Naturwissenschaften 52 (1965), S. 185-185 
    Details
    ISSN: 1432-1904
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Chemistry and Pharmacology , Natural Sciences in General
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00623245
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  • 4
    Electronic Resource
    Electronic Resource
    The solubilities of two representative potassium carboxylate salts at 25 °C in the aqueous cyclic ethers, 1,4-dioxane and tetrahydrofuran, and their relationship to mean solvent polarity (1983)
    Springer
    Monatshefte für Chemie 114 (1983), S. 1321-1335 
    Details
    ISSN: 1434-4475
    Keywords: Cyclic ethers, aqueous, as solvents for salts ; Free energy of solution, “standard” partial molar, isothermal estimation ; Interionic distances for potassium carboxylates at saturation in aqueous cyclic ethers at 25 °C ; Potassium carboxylates, solubilities at 25 °C in aqueous cyclic ethers ; Salt solubilities and solvent polarities ; Solubilities of potassium carboxylates in aqueous cyclic ethers at 25 °C
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Zusammenfassung Neue Messungen der Löslichkeiten von K-Acetat und K-Benzoat in wäßrigen Lösungen von 1,4-Dioxan bzw. THF wurden durchgeführt. Es wird eine quasi-thermodynamische Behandlung der Daten mit einer Kombination von chemischer Thermodynamik und einer uneingeschränktenDebye-Hückel-Theorie der Elektrolyte in Lösung angewandt; diese theoretische Beschreibung liefert eine Beziehung zwischen der Löslichkeit eines Salzes und der Lösungs-mittelpolarität.
    Notes: Abstract New measurements upon the respective solubilities of potassium acetate and benzoate at 25 °C in aqueous 1,4-dioxane and in aqueous tetrahydrofuran are reported, together with a quasi-thermodynamic development, from the union of chemical thermodynamics with the unrestricted result of theDebye-Hückel theory of electrolytes in solution, of a general theoretical function which in principle provides a summary descriptive expression of the relationship between the solibilities of any salt at any natural limiting concentrations and the polarities of its solvents.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00798642
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  • 5
    Electronic Resource
    Electronic Resource
    Influence of solvent polarity upon salt solubilities, II: Solubilities of two potassium carboxylates at 85°C in aqueous 1,4-dioxane (1984)
    Springer
    Monatshefte für Chemie 115 (1984), S. 1039-1045 
    Details
    ISSN: 1434-4475
    Keywords: Free energy of solution ; Interionic separations ; Quasi-thermodynamic
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Zusammenfassung Die Löslichkeit von Kaliumacetat und Kaliumbenzoat in wäßrigem 1,4-Dioxan bei einer Temperatur von 85°C wird zusammen mit einer quasi-thermodynamischen generellen Behandlung der experimentellen Daten diskutiert.
    Notes: Abstract The solubilities of potassium acetate and benzoate in aqueous 1,4-dioxane at a temperature of 85°C are reported together with a quasi-thermodynamic general treatment of the experimental results.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00798770
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  • 6
    Electronic Resource
    Electronic Resource
    Inflammation-associated lysyl oxidase protein expression in vivo, and modulation by FGF-2 plus IGF-1 (1998)
    Springer
    Histochemistry and cell biology 110 (1998), S. 9-14 
    Details
    ISSN: 1432-119X
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Notes: Abstract  Lysyl oxidase is the extracellular enzyme that catalyzes oxidative deamination of peptidyl-lysine residues in elastin precursors, and lysine and hydroxylysine residues in collagen precursors to form peptidyl-aldehydes. These aldehydes then spontaneously condense to crosslink collagen and elastin and thereby allow the formation of a mature and functional extracellular matrix. In the present study, cryosections made from aseptic immune-induced periapical lesions experimentally generated in laboratory rats were examined by immunohistochemistry to investigate whether lysyl oxidase protein expression is altered in inflamed oral tissues. Periapical lesions are experimentally induced endodontic lesions of tooth roots. In addition, the effect of administration of a mixture of fibroblast growth factor (FGF)-2 and insulin-like growth factor (IGF)-1 into these lesions on lysyl oxidase expression was determined. Lysyl oxidase expression was found to be increased in non-mineralized connective tissue adjacent to inflamed lesions. Morphometric analyses indicated that maximum lysyl oxidase expression occurred at a discrete distance from the lesion not exceeding 350 μm from the inflammatory cells. Staining was associated with mesenchymal cells with a fibroblastic morphology. No lysyl oxidase staining was found near teeth where no lesion was induced. Application of a mixture of FGF-2 and IGF-1 resulted in a further twofold increase in lysyl oxidase expression. These results provide a new in vivo model to study lysyl oxidase regulation, and suggest that inflammatory cells may control lysyl oxidase expression in oral tissues, possibly by a mechanism involving secretion of cytokines and other factors, probably contributing to the regulation of extracellular matrix accumulation.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s004180050259
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  • 7
    Electronic Resource
    Electronic Resource
    Intussusception secondary to squamous carcinoma of the lung (1988)
    Springer
    Abdominal imaging 13 (1988), S. 224-226 
    Details
    ISSN: 1432-0509
    Keywords: Small bowel, metastases ; Squamous carcinoma, lung ; Small bowel, obstruction ; Intussusception
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract This report describes unusual radiologic and pathologic findings in a patient with multiple small bowel metastases from squamous cell carcinoma of the lung. The diagnostic work-up revealed a large, pleural-based, right lung mass, a large left adrenal mass, two ulcerated small bowel masses, and a unique giant peduncular mass that caused intermittent intussusception. A pertinent review of the literature is presented.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01889066
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  • 8
    Electronic Resource
    Electronic Resource
    Intramural hemorrhage simulating gastric neoplasm (1988)
    Springer
    Abdominal imaging 13 (1988), S. 102-104 
    Details
    ISSN: 1432-0509
    Keywords: Stomach, ulcer ; Pseudotumor, gastric ; Hemorrhage, intramural
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract We report a case of benign gastric ulcer with secondary extensive intramural hemorrhage causing a radiographic appearance consistent with a large ulcerated gastric neoplasm. This is the second such case reported and the first studied with sonography and computed tomographic scan. A brief review of the literature on intramural gastric hematoma is presented.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01889035
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  • 9
    Electronic Resource
    Electronic Resource
    Ventricular septal defect with bidirectional shunting: Mathematical considerations (1966)
    Springer
    Bulletin of mathematical biology 28 (1966), S. 167-179 
    Details
    ISSN: 1522-9602
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Mathematics
    Notes: Abstract Previously proposed formulae for the quantitative estimation of bidirectional shunts across ventricular septal defects require determination of the oxygen contents of mixed venous, pulmonary artery, pulmonary venous, and aortic blood. Because these formulae do not take into account the mixing of oxygenated with unoxygenated blood within the ventricles, their use must result in underestimation of shunt flows in each direction. A mathematical model for a ventricular defect is examined, in which it is assumed that mixing of blood occurs in each of six sites in the venae cavae or right atrium, right ventricle, pulmonary artery, left atrium, left ventricle, and aorta. A total of fourteen streams of blood can flow from one to another of these mixing sites. As long as complete mixing occurs in the six specified mixing sites, any degree of mixing or non-mixing of the various streams is permitted. From the equations characterizing the model, formulae are derived in which the shunt flow in each direction is expressed in terms of the oxygen contents in the six mixing sites and the fractions of blood which enter the shunt from either side without prior mixing in a ventricular mixing site. The previously reported formulae, which apply when no ventricular mixing is allowed to occur, lead to theoretical minimum values for the shunt flows in each direction. At the opposite extreme where all the shunting blood is required to mix in a ventricle before entering the shunt, formulae for maximum possible shunt flows are also obtained. The absolute values for the left-to-right and right-to-left shunt flows, which must lie somewhere between the theoretical maximum and minimum values, cannot be computed from blood gas data alone.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02476991
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  • 10
    Electronic Resource
    Electronic Resource
    Effect of carbon dioxide on sporulation of Alternaria crassa and Alternaria cassiae (1992)
    Springer
    Mycopathologia 118 (1992), S. 167-171 
    Details
    ISSN: 1573-0832
    Keywords: Biological control ; mycoherbicide ; fungi ; weeds
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Notes: Abstract Biological herbicides will assume greater importance for weed control as the number of chemicals registered for use decreases. Two promising fungi pathogenic on Datura stramonium and Cassia obtusifolia are, respectively, Alternaria crassa and Alternaria cassiae. In order to develop technologies for the efficient production of spore inocula in submerged liquid culture, we studied the effect of volatile factors which influenced sporulation on solid media. Sporulation was quantified on Richard's V8 agar under individual and joint variation of carbon dioxide (CO2) and relative humidity (RH). Sporulation of both fungi was suppressed when the two factors increased but not when CO2 was absorbed and RH remained high. Incubation of cultures in a CO2 controlled cabinet with RH constant indicated that CO2 was the suppressant.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00437150
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