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  • 11
    Digitale Medien
    Digitale Medien
    Industrial recovery of strawberry flavour — fractional distillation versus plate condensation (1994)
    Springer
    European food research and technology 198 (1994), S. 491-494 
    Details
    ISSN: 1438-2385
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Werkstoffwissenschaften, Fertigungsverfahren, Fertigung
    Beschreibung / Inhaltsverzeichnis: Abstract The mass balance of volatile flavours of the industrial processing of strawberry juice to juice concentrate and aroma concentrate was determined. Thirty-eight volatile indicator compounds were quantified. Conventional fractional distillation (A), when compared with a novel, three-stage plate condenser/scrubber (B), yielded the sensorially and analytically preferred aroma concentrate. Variant A transferred approx 26% (w/w) of the recorded volatiles into the aroma concentrate, whereas variant B recovered approx 15% (w/w). The calculated overall processing loss including the singlings was 66.7% (A), and 79.2% (B) of the genuine aroma pool, respectively.
    Notizen: Zusammenfassung Die Massenbilanz der Aromastoffe bei der industriellen Verarbeitung von Erdbeersaft zu Saftkonzentrat und Aromakonzentrat wurde erstellt. Achtunddreißig flüchtige Indikatorsubstanzen wurden quantifiziert. Das konventionelle Rektifikationsverfahren (A) lieferte im Vergleich zu einem neuartigen, dreistufigen Plattenkondensator/Gaswäscher (B) das sensorisch und analytisch bevorzugte Aromakonzentrat. Verfahren (A) überführte ca. 26% der erfaßten Aromastoffe in das Aromakonzentrat; Verfahren (B) ca. 15%. Das rechnerische Prozeßdefizit einschließlich der Lutterwässer betrug 66,7% (A) bzw. 79,2% (B) des genuinen Aromabestandes.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF01192846
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  • 12
    Digitale Medien
    Digitale Medien
    Solar Cii resonance line profiles (1970)
    Springer
    Solar physics 12 (1970), S. 370-378 
    Details
    ISSN: 1573-093X
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Physik
    Notizen: Abstract The profiles of the solar Cii resonance doublet λ1334.6 A are presented. Possible broadening mechanisms are discussed.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF00148020
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  • 13
    Digitale Medien
    Digitale Medien
    Localization of lipolytic and esterolytic activities of Tyromyces sambuceus, a 4-decanolide-producing basidiomycete (1994)
    Springer
    Applied microbiology and biotechnology 41 (1994), S. 210-214 
    Details
    ISSN: 1432-0614
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Biologie , Werkstoffwissenschaften, Fertigungsverfahren, Fertigung
    Notizen: Abstract Pellets of Tyromyces sambuceus were cultured in standard liquid media that contained a natural triacylglycerol as an additional carbon source. Parallel to a drop of pH below 2.0 and the formation of R(+)-4-decanolide, the oil droplets disappeared. Assays based on 3-naphthyl ester showed that most of the lipolytic and esterolytic enzyme activities were membrane-associated. The time course of enzyme activities after addition of castor oil suggested an inducibility of both membrane-bound and intracellular lipases, while only the intracellular esterases responded significantly. The results could contribute to improving the biotechnological generation of lipid-derived flavours and other compounds.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF00186961
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  • 14
    Digitale Medien
    Digitale Medien
    Dorian Gray mice exposed (1993)
    [s.l.] : Nature Publishing Group
    Nature 363 (1993), S. 666-666 
    Details
    ISSN: 1476-4687
    Quelle: Nature Archives 1869 - 2009
    Thema: Biologie , Chemie und Pharmazie , Medizin , Allgemeine Naturwissenschaft , Physik
    Notizen: [Auszug] SIR- We read with interest the article on Dorian Gray mice. As froggies, we appreciate the fascinating possibilities of increasing the size of these charming little animals. But the paper by Ariellos et aL was misquoted. In fact, it is notorious that this marvellous work was edited by ...
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1038/363666c0
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  • 15
    Digitale Medien
    Digitale Medien
    Effect of subarachnoid haemorrhage on trigeminovascular calcitonin-gene-related peptide and substance P of the rat dura mater versus cerebral vasculature (1994)
    Springer
    Acta neurochirurgica 127 (1994), S. 103-111 
    Details
    ISSN: 0942-0940
    Schlagwort(e): Dura mater ; cerebral blood vessels ; calcitonin-gene-related peptide ; substance P ; subarachnoid haemorrhage ; vascular headache
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Medizin
    Notizen: Summary While the presence of a robust perivascular neural network accompanying cerebral and dural blood vessels that contain various neuropeptides is well documented, the functional significance of this innervation is unclear. Following experimentally induced subarachnoid haemorrhage (SAH) in animal models, immunocytochemical studies have revealed that changes occur in the staining intensity of some of these neuropeptides. This study compared the immunostaining intensity of calcitonin-gene-related peptide (CGRP) and substance P (SP) in cerebral and dural perivascular nerve fibers after SAH in the rat. Subarachnoid haemorrhage was produced by injecting 0.3 ml of autologous blood into the cisterna magna of male Sprague Dawley rats. Sham operated animals received an equal volume of buffered lactated Ringer's solution (pH 7.4). Changes in the immunostaining intensity of cerebral and dural vessels were evaluated by independent observers at 6, 24, and 48 hours after SAH. Immunostaining of CGRP was reduced in cerebral vessels at 6 hours and returned to normal by 48 hours. In contrast, CGRP immunostaining of dural perivascular nerve fibers was unchanged at all time periods examined. A marked decrease in SP immunostaining was documented at 6 hours in both the cerebral and dural vessels in all animals; at 48 hours, the staining intensity had returned to control levels. These results support the idea that several subpopulations of trigeminovascular neurons containing CGRP, SP, or both project to cerebral and dural vessels. Since these subpopulations may be differentially activated in pathologic conditions, such as SAH or vascular headache, the potential exists for pharmacologic intervention of specific neuropeptides with the resultant abatement of a pathologic process.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF01808556
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  • 16
    Digitale Medien
    Digitale Medien
    ESR Study of Paramagnetic Centers in Irradiated Phosphate Glasses (1994)
    s.l. ; Stafa-Zurich, Switzerland
    Advanced materials research Vol. 1-2 (Sept. 1994), p. 421-426 
    Details
    ISSN: 1662-8985
    Quelle: Scientific.Net: Materials Science & Technology / Trans Tech Publications Archiv 1984-2008
    Thema: Maschinenbau
    Materialart: Digitale Medien
    URL: http://www.tib-hannover.de/fulltexts/2011/0528/01/39/transtech_doi~10.4028%252Fwww.scientific.net%252FAMR.1-2.421.pdf
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  • 17
    Digitale Medien
    Digitale Medien
    Two human genes encoding zinc finger proteins, ZNF12 (KOX 3) and ZNF 26 (KOX 20), map to chromosomes 7p22-p21 and 12q24.33, respectively (1991)
    Springer
    Human genetics 〈Berlin〉 86 (1991), S. 585-590 
    Details
    ISSN: 1432-1203
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Biologie , Medizin
    Notizen: Summary Two members of the human zinc finger Krüppel family, ZNF 12 (KOX 3) and ZNF 26 (KOX 20), have been localized by somatic cell hybrid analysis and in situ chromosomal hybridization. The presence of individual human zinc finger genes in mouse-human hybrid DNAs was correlated with the presence of specific human chromosomes or regions of chromosomes in the corresponding cell hybrids. Analysis of such mouse-human hybrid DNAs allowed the assignment of the ZNF 12 (KOX 3) gene to chromosome region 7p. The ZNF 26 (KOX 20) gene segregated with chromosome region 12q13-qter. The zinc finger genes ZNF 12 (KOX 3) and ZNF 26 (KOX 20) were localized by in situ chromosomal hybridization to human chromosome regions 7p22-21 and 12q24.33, respectively. These genes and the previously mapped ZNF 24 (KOX 17) and ZNF 29 (KOX 26) genes, are found near fragile sites.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF00201545
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  • 18
    Digitale Medien
    Digitale Medien
    Relationship between age and heart rate variability in supine and standing postures: A study of spectral analysis of heart rate (1994)
    Springer
    Pediatric cardiology 15 (1994), S. 14-20 
    Details
    ISSN: 1432-1971
    Schlagwort(e): Age ; Heart rate variability ; Spectral analysis ; Cholinergic ; Adrenergic
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Medizin
    Notizen: Summary We compared heart rate variability measures of 11 normal children (4–12 years) to 23 normal adults (21–43 years) to study the effect of age on heart rate variability measures. Children had a significantly higher supine and standing heart rate and lower supine and standing systolic diastolic blood pressure. Children also had a significantly higher supine standard deviation of HR, supine low frequency (0.01–0.05 Hz) (p〈0.005), supine high frequency (0.2–0.5 Hz) (p〈0.001), and standing high frequency powers (p〈0.005) compared to adults. The ratio of mid frequency (0.07–0.15 Hz) to high frequency power (0.2–0.5 Hz) upon standing was significantly lower in children (p〈0.005). While there was a significant increase of the mid frequency power from supine to standing posture in the adult group (p〈0.02), there was no such significant increase in children. There were also significant negative correlations between age and supine low frequency, mid frequency, and high frequency powers, and standing high frequency power. These findings illustrate a decrease of cholinergic and an increase of adrenergic modulation of heart rate variability with age (4–43 years).
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF00797000
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  • 19
    Digitale Medien
    Digitale Medien
    Selective screening for amino acid disorders (1994)
    Springer
    European journal of pediatrics 153 (1994), S. S33 
    Details
    ISSN: 1432-1076
    Schlagwort(e): Key words: Amino acid chromatography – Renal transport defects – Unusual amino acids – Decreased plasma concentrations – Methionine intolerance
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Medizin
    Notizen: Abstract. The analysis of amino acids is the most frequently applied technique in the selective screening of inborn errors of metabolism. When urine is used as a starting material, simple techniques such as thin-layer chromatography or high-voltage electrophoresis is preferred as a first approach. The quantitative analysis requires instrumentation, usually an amino acid analyser. Both plasma and urine are needed for establishing renal transport defects. Apart from the accumulation of the `usual' amino acids, the presence of unusual amino acids may be of diagnostic significance. Furthermore the finding of decreased plasma concentrations of specific amino acids may pinpoint several inherited defects. No amino acid screening procedure is complete without the availability of an organic acid and a purine/pyrimidine analytical system, both yielding important additional diagnostic information. Considerable clinical problems may occur in subjects with a decreased tolerance to protein amino acids without being homozygous for any inherited defect. Examples of these disorders that need further studies are homocysteinaemia associated with vascular disease and carriers of ornithine transcarbamylase deficiency.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF02138775
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  • 20
    Digitale Medien
    Digitale Medien
    Group tests for selective screening of inborn errors of metabolism (1994)
    Springer
    European journal of pediatrics 153 (1994), S. S27 
    Details
    ISSN: 1432-1076
    Schlagwort(e): Key words: Chromatographic methods – Amino acids – Organic acids – Purines/pyrimidines – Very long-chain fatty acids
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Medizin
    Notizen: Abstract. Selective screening for inherited metabolic disorders can be performed efficiently by chromatographic techniques. Each technique is suited for a well-defined group of substances present in urine, plasma and CSF. A comprehensive screening programme may involve the analysis of amino acids, organic acids, imidazoles, purines and pyrimidines, oligosaccharides and mucopolysaccharides in urine as well as very long-chain fatty acids in plasma. The experienced laboratory, in close co-operation with a specialized paediatrician, will make a positive diagnosis in 6% of the referred samples, provided a careful selection of the patients is made. Our experience of 10 years of screening revealed 100 different defects; 30% of these were so-called amino acid disorders, 50% organic acidurias and the remaining 20% miscellaneous defects. Chromatographic methods are well suited for the discovery of novel defects. In this respect group screening tests will remain of major importance for the study of inborn errors of metabolism.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF02138774
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