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  • Elsevier  (19)
  • Springer  (17)
  • Wiley-Blackwell
  • 2015-2019  (2)
  • 1990-1994  (34)
  • 1
    Electronic Resource
    Electronic Resource
    A human cDNA coding for the Leydig insulin-like peptide (Ley I-L) (1994)
    Springer
    Human genetics 〈Berlin〉 94 (1994), S. 91-94 
    Details
    ISSN: 1432-1203
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Notes: Abstract cDNA clones for the human Leydig insulin-like peptide (Ley I-L) have been isolated and characterized. The nucleotide sequence of the 743-bp cDNA includes an incomplete 7-bp 5′-noncoding region, an open reading frame of 393 bp, and a 343-bp 3′-noncoding region. By primer extension analysis, the transcription start site was determined as being 14-bp upstream of the translation start site. The underlying gene is expressed in the testis but not in other organs. From the cDNA sequence, it can be deduced that the Ley I-L protein is synthesized as a 131-amino-acid (aa) preproprotein and that it contains a 24-aa signal peptide. Comparison of the pro Ley I-L protein with members of the insulin-like hormone superfamily predicts that the biologically active hormone, after proteolytic processing of the C peptide, consists of a 31-aa long B chain and a 26-aa long A chain, and that it has a molecular weight of 6.25 kDa.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02272850
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  • 2
    Electronic Resource
    Electronic Resource
    Expression and chromosomal mapping of the gene encoding the human histone H1.1 (1994)
    Springer
    Human genetics 〈Berlin〉 94 (1994), S. 633-639 
    Details
    ISSN: 1432-1203
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Notes: Abstract The expression of a human histone H1 isoform (H1.1) was studied in several human tissues. Northern blot analysis has revealed that this gene is expressed in testis and thymus, but not in other human tissues. In this report, we demonstrate that the expression of the histone H1.1 gene in human testis is restricted to early round spermatids that belong to the fraction of postmeiotic sperm cells. Transcripts hybridizing with the human H1.1 gene could not be detected in testis of mouse, rat, bull or boar. Southern blot analysis with human genomic DNA, DNA from different Old World monkeys (chimpanzee, orangutan, gorilla and rhesus monkey) and DNA from several mammalian species has revealed that the histone H1.1 gene is highly conserved in higher primates, whereas no cross-hybridization can be detected with DNA from other mammalian species such as mouse, rat, hamster or bull. In a previous report, the human histone H1.1 gene and other H1 genes (H1.2–H1.5, H1t) were assigned to chromosome 6 by polymerase chain reaction analysis using human-rodent cell hybrid DNA; fluorescence in situ hybridization indicated that these genes form part of a major gene cluster on the short arm of chromosome 6. We have confirmed the localization of histone H1.1 to chromosome 6 and have regionally assigned the locus to 6p21.3 by radioactive in situ hybridization.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00206957
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  • 3
    Electronic Resource
    Electronic Resource
    Non-isothermal kinetics of high temperature oxidation studied by a fast X-ray diffraction method (1992)
    Springer
    Journal of thermal analysis and calorimetry 38 (1992), S. 649-655 
    Details
    ISSN: 1572-8943
    Keywords: corrosion ; high temperature oxidation ; non-isothermal kinetics ; X-ray diffraction method
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Zusammenfassung Unter Anwendung eines Diffraktometers mit einer Hochtemperatureinheit wurde unterhalb 570°C mittels Röntgendiffraktion die Oxidation von Fe-ARMCO untersucht. Die Oxidationsprodukte wurden in situ bestimmt und das Differenzverfahren ergabY(T)-Kurven, die die globalen Änderungen zeigen. Diese Kurven wurden anhand der mikroskopisch bestimmten resultierenden Dicken der Oxidschicht kalibriert, wobei man die Funktionx(T) erhält. Dieser Kurve wurde eine berechnete, die Arrheniussche Beziehung enthaltende Funktion angepaßt, wodurch man die Aktivierungsenergie und die Oxidations Geschwindigkeitskonstante als Funktion der Temperatur erhält.
    Notes: Abstract Temperature resolved X-ray diffraction using a diffractometer equipped with a high temperature device was applied to the study of the oxidation of Fe-ARMCO below 570°C. The oxidation products are identified in situ and the difference method yields curvesY(T) showing the global changes. These curves were calibrated to the microscopically measured end thickness of the oxide layer obtaining the growthx(T). A calculated curve including the Arrhenius relation was fitted to thex(T) curve yielding activation energy and values of the oxidation rate constant as a function of temperature.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01979393
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  • 4
    Electronic Resource
    Electronic Resource
    Phase transitions of ammonium nitrate doped with alkali nitrates studied with fast X-ray diffraction (1992)
    Springer
    Journal of thermal analysis and calorimetry 38 (1992), S. 843-853 
    Details
    ISSN: 1572-8943
    Keywords: ammonium nitrate ; phase transformation
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Zusammenfassung Trockene Ammoniumnitratproben (AN) mit einem Gehalt von 1, 3 bzw. 5 mol% KNO3, RbNO3 und CsNO3 wurden mittels Röntgendiffraktion in Abhängigkeit von der Temperatur untersucht. Die Proben durchliefen 2 Temperaturprogramme (von 70° auf 100° und von −70° auf 150°C). Zum Vergleich wurden DSC-Messungen durchgeführt. KNO3 erweitert den Stabilitätsbereich der Phase III. Die Unterkühlung bei den Übergängen II/III und III/IV war so ausgeprägt, daß man die Phasen III und IV überspringen konnte, um die direkten Phasenübergänge II/IV und III/V zu erhalten. Beim Erhitzen wurde keine behinderte Keimbildung beobachtet. RbNO3 verleiht trockenem AN die Eigenschaften von feuchtem Nitrat. Phase III tritt zwar beim Erhitzen auf, wird aber beim Abkühlen ausgelassen, wenn die Probe zuvor auf 150°C erhitzt wurde. Es wurde eine behinderte Keimbildung beobachtet. CsNO3 stabilisiert die Phasen II und V. Es wurde keine ausgeprägte Hysterese oder Unterkühlung beobachtet.
    Notes: Abstract Dried samples of ammonium nitrate (AN) containing 1, 3, 5 mol% KNO3, RbNO3 and CsNO3 were investigated with temperature resolved X-ray diffraction. The samples were cycled with 2 temperature programs from −70° to 100° and −70° to 150°C, resp. DSC measurements were made for comparison. KNO3 extends the stability range of phase III. The supercooling observed with the transitions II/III and III/IV was so severe that the phases III and IV could be skipped leading to the transitions II/IV and III/V. No hindered nucleation was observed on heating. RbNO3 gives dried AN the properties of the humid nitrate. Phase III appeared on heating but was skipped on cooling, when the sample had been heated to 150°C. Hindered nucleation was observed. CsNO3 stabilizes the phases II and V. No strong hysteresis or supercooling was observed.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01979416
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  • 5
    Electronic Resource
    Electronic Resource
    The effects of boron additions on the oxidation of Fe-Cr alloys in high-temperature steam: Analytical results and mechanisms (1991)
    Springer
    Oxidation of metals 35 (1991), S. 375-395 
    Details
    ISSN: 1573-4889
    Keywords: Fe-Cr ; boron ; steam ; EELS
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Notes: Abstract The oxide films formed on iron-chromium alloys in superheated steam have been investigated using a variety of microanalytical techniques, most notably electron energy loss spectroscopy. The addition of boron dopants leads to the rapid formation of a microcrystalline film of composition (Cr) x B 1}-x 2 O 3,which resists further oxidation. Analysis of the near-edge structures associated with each core-loss edge after different oxidation times allows us to postulate various mechanisms for the observed behavior.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00664709
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  • 6
    Electronic Resource
    Electronic Resource
    Time and temperature resolved X-ray diffraction for studies of solid state reactions and phase transitions (1994)
    Springer
    Fresenius' Zeitschrift für analytische Chemie 349 (1994), S. 163-165 
    Details
    ISSN: 1618-2650
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Notes: Abstract Three examples for the application of time and temperature resolved X-ray diffraction for the investigation of solid state reactions and phase transitions are given. Samples were submitted to an isothermal temperature program or to stepwise heating/cooling, while diffraction patterns were measured continuously. The applications include the in situ identification of reaction products or phases, the determination of kinetic parameters, the observation of thermal expansion and the formation of layers.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00323252
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  • 7
    Electronic Resource
    Electronic Resource
    Assignment of the Leydig insulin-like hormone to porcine Chromosome 2q12-q13 by somatic cell hybrid analysis and fluorescence in situ hybridization (1994)
    Springer
    Mammalian genome 5 (1994), S. 307-309 
    Details
    ISSN: 1432-1777
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00389546
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  • 8
    Electronic Resource
    Electronic Resource
    Assignment of the porcine transition protein TNP1 to Chromosome 15q24–q25 by fluorescence in situ hybridization (FISH) (1994)
    Springer
    Mammalian genome 5 (1994), S. 249-250 
    Details
    ISSN: 1432-1777
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00360557
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  • 9
    Electronic Resource
    Electronic Resource
    Application of a fast X-ray diffraction method for studies of high temperature corrosion of steel surfaces (1991)
    Springer
    Fresenius' Zeitschrift für analytische Chemie 341 (1991), S. 436-438 
    Details
    ISSN: 1618-2650
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Notes: Summary A fast X-ray diffraction method was applied in order to study in situ high temperature corrosion of steel surfaces. The measuring system for high temperature corrosion testing consists of an X-ray diffractometer, a high temperature device with programmable temperature controller and a Si(Li)-detector for measurements of energy dispersive diffraction spectra at temperatures from 20 to 1500°C. With a measuring time of 100 s per diffraction pattern a series of 300 measurements can be performed during one day. The atmosphere in the high temperature device can be controlled. The samples were heated in air at ambient pressure, recording X-ray diffraction spectra every 20°C. In addition, isothermal experiments were carried out at different temperatures. From the diffraction spectra the peak intensities, lattice plane distances and lattice parameters of the base material and the oxides were calculated as a function of temperature or time. The method allows an in situ identification of the corrosion products and a direct observation of phase transitions.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00321952
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  • 10
    Electronic Resource
    Electronic Resource
    Kinetics of the α-Fe2O3 formation on Fe3O4 between 400 and 570°C studied by means of X-ray diffraction with grazing incidence (1993)
    Springer
    Fresenius' Zeitschrift für analytische Chemie 346 (1993), S. 252-254 
    Details
    ISSN: 1618-2650
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Notes: Summary The formation of α-Fe2O3 on Fe3O4 during the oxidation of iron below 570°C occurs very slowly and the scales are so thin that they cannot be detected by microscopy. X-ray diffraction with grazing incidence, equipped with a high temperature device, allows an ‘in situ’ study of the α-Fe2O3 formation even the initial reactions. The formation of α-Fe2O3 was studied in isothermal experiments at 400, 450, 500 and 550°C. α-Fe2O3 could already be detected at the beginning of the experiments. The difference method, a numerical treatment for kinetic evaluation, yields curves showing the growth of the α-Fe2O3 layer. Fitting the parabolic time law to these curves yields the rate constants.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00321425
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