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  • Articles: DFG German National Licenses  (16)
  • 1985-1989  (16)
  • 11
    Electronic Resource
    Electronic Resource
    Ambulatory 24-hour esophageal pH monitoring (1988)
    Springer
    Digestive diseases and sciences 33 (1988), S. 1127-1133 
    Details
    ISSN: 1573-2568
    Keywords: gastroesophageal reflux disease ; esophagitis ; 24-hour pH test ; gastroesophageal reflux tests
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract If 24-hour esophageal pH monitoring is to be a useful diagnostic tool, it must reliably discriminate gastroesophageal reflux patients despite daily variations in distal esophageal acid exposure. To address this issue, we studied 53 subjects (14 healthy normals, 14 esophagitis patients, and 25 patients with atypical symptoms) with two ambulatory pH tests performed within 10 days of each other. Intrasubject reproducibility of 12 pH parameters to discriminate the presence of abnormal acid reflux was determined. As a group, the parameters of percent time with pH〈4 (total, upright, recumbent) were most reproducible (80%). Therefore, a subject was defined as having gastroesophageal reflux disease if at least one of these three values were abnormal. Intrasubject reproducibility for the diagnosis of reflux disease was 89% for the entire sample. Among subsets, the reproducibility was 93% for the normals and esophagitis patients and 84% for the atypical symptom patients. Total percent time with pH〈4 was the single most discriminate pH parameter (85%) and nearly equaled that of the three combined parameters (89%). The intrasubject variability of this parameter was determined by the mean ±2sd of the relative differences between the two test results for all 53 subjects. Total percent time with pH〈4 may vary between tests by a factor of 3.2-fold or less (218% higher to 69% lower). We conclude: (1) ambulatory 24-hr esophageal monitoring is a reproducible test for the diagnosis of gastroesophageal reflux disease; and (2) the large intrastudy variability in 24-hr total acid exposure may limit this test's usefulness as a measurement of therapeutic improvement.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01535789
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    Paper (German National Licenses)
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  • 12
    Electronic Resource
    Electronic Resource
    Scintigraphic demonstration of a diaphragmatic defect as the cause of massive hydrothorax in cirrhosis (1985)
    Springer
    European journal of nuclear medicine 11 (1985), S. 46-48 
    Details
    ISSN: 1619-7089
    Keywords: Cirrhotic ; hydrothorax ; diaphragmatic defect ; 99mTc-HSA scintigraphy ; intraperitoneal injection
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract A 64-year-old man presented with a massive rightsided hydrothorax associated with cirrhosis of the liver. There was no clinical evidence of ascites nor other underlying disease. The usual complementary tests failed to demonstrate any causative abnormality. Chest and abdominal scintigraphy after intraperitoneal injection of 99mTc-human serum albumin disclosed early filling of the pleural space by the radiopharmaceutical and suggested a diaphragmatic defect as the cause for this rare association.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00440961
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    Paper (German National Licenses)
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  • 13
    Electronic Resource
    Electronic Resource
    Incubation experiments on nitrogen mineralization in loess and sandy soils (1985)
    Springer
    Plant and soil 83 (1985), S. 433-445 
    Details
    ISSN: 1573-5036
    Keywords: Incubation experiments ; Nitrogen mineralization ; Organic matter ; Plant residues
    Source: Springer Online Journal Archives 1860-2000
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: Summary In aerobic incubation experiments, nitrogen mineralization was investigated in agricultural loess and sandy soils. Fresh, fieldmoist samples were used for incubation. Using an optimization procedure the N-mineralization was split into two nitrogen fractions: A resistant, slowly decomposable organic N-fraction (index rpm) and a fast decomposable N-fraction (index dpm). Loess- and sandy soils showed similar mean reaction coefficients for N-mineralization. The results also indicated that the amount of mineralizable nitrogen in the resistant N-fraction depended directly on clay content. Soil sampling at different times during crop growing period gave different mineralization amounts and courses. Effect of added plant residues on N-mineralization, was also studied by incubation. Variation of type and quantity of added residues changed the net N-mineralization in a characteristic way: Sugar beet leaves, added in minced form, caused an increase in mineralization; while straw caused a temporary immobilization, followed by remineralization. Incubation experiments on undisturbed soil columns showed nearly linear mineralization with time.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02184455
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    Paper (German National Licenses)
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  • 14
    Electronic Resource
    Electronic Resource
    Simulation of nitrogen regime in loess soils in the winter half-year: comparison between field measurements and simulations (1985)
    Springer
    Plant and soil 83 (1985), S. 419-432 
    Details
    ISSN: 1573-5036
    Keywords: Loess soil ; Nitrogen ; Simulation model
    Source: Springer Online Journal Archives 1860-2000
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: Summary Periodic N-min measurements were used to validate a simple model describing N regime of cropped Loess soils over the winter half-year. The model comprises of submodels for N mineralization, nitrate transport and N uptake by plants. The description of mineralization is based on kinetic studies in the lab by means of incubation experiments. The transport model is as described earlier4 avoiding an explicite modeling of water movement through soils. Plant uptake for this period was modelled only roughly. The agreement between measurement and simulation is for about 90% of all cases within the confidence interval of the measured values. Possible reasons for the observed deviations are discussed.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02184454
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    Paper (German National Licenses)
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  • 15
    Electronic Resource
    Electronic Resource
    Organische Elektronenleiter und Vorstufen. V.IV. Mitt.: RICHTER, A. M.; FANGHÄNEL E.: Sulfur Lett. 3 (1985) 25. Synthese von Poly(organylthio-acetylenen) (1987)
    New York, NY : Wiley-Blackwell
    Journal für Praktische Chemie/Chemiker-Zeitung 329 (1987), S. 811-816 
    Details
    ISSN: 0021-8383
    Keywords: Chemistry ; Organic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: Organic Electron Conductors and Precursors. V. Synthesis of Poly (organylthio-acetylenes)Poly(bis-organylthio-acetylenes) 2 and poly(mono-organylthio-acetylenes) 3 have been synthesized by complex catalyzed polymerization of the corresponding acetylenes (4 resp. 5). Yields and properties of the polymers 2, 3 depend on reaction conditions, the catalyst and the nature of the acetylenes. Relations between these influence factors are discussed.
    Additional Material: 3 Tab.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/prac.19873290509
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    Paper (German National Licenses)
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  • 16
    Electronic Resource
    Electronic Resource
    Determination of lifetimes and hyperfine splittings of Tl statesnP 3/2 by level-crossing spectroscopy with two-photon excitation (1988)
    Springer
    The European physical journal 10 (1988), S. 27-33 
    Details
    ISSN: 1434-6079
    Keywords: 32.80.B ; 32.80.K
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract Level-crossing spectroscopy with pulsed two-photon excitation is used to determine life-times and for the first time to determine hyperfine splittings. The experiments have been performed on thalliumnP 3/2 states (n=8, 9 andn=8–11 respectively). By appropriate choice of the polarization and direction of incident light — and, thereby, of the two-photon transition operator — the signal ratio of neighbouring Δm=2 crossings is altered. Thus, in the case of overlapping crossings improved resolution can be obtained without further efforts.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01425578
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    Paper (German National Licenses)
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