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  • 1
    Electronic Resource
    Electronic Resource
    Magnetic properties of Fe(2−x)RuxZr system (abstract) : The 41st annual conference on magnetism and magnetic materials (1997)
    [S.l.] : American Institute of Physics (AIP)
    Journal of Applied Physics 81 (1997), S. 5282-5282 
    Details
    ISSN: 1089-7550
    Source: AIP Digital Archive
    Topics: Physics
    Notes: Pseudobinary systems of the type Fe(2−x)MxZr (M=transition metal) have been studied extensively for their typical magnetic properties.12 The common features of such systems are a breakdown of magnetic order and change in crystal structure from cubic C15 (Cu2Mg) type to hexagonal C14 (MgZn2 type) with a variation in concentration (x). The origin of the structural change is not very clear. The Fe moment is thought to be influenced by the near neighbor environment and variation in electronic structure. The present investigation involving the substitution of Fe with isoelectronic Ru assumes importance in light of this and complements the previous reported work. We find that for x〈0.5 the structure is C15. For x=0.6, a structural transition to C14 type takes place. The structural transition in the case of Ru occurs at x=0.5 as against values between 0.2 and 0.4 reported for similar studies with other transition metals like V, Cr, and Mn. There seems to be a clear indication of electronic influence on the structural change. In the case of V, which has five outer electrons, the structural change occurs at a relatively low substitution of x=0.2, whereas in the case of Ru, which has eight outer electrons, the structural change occurs at x=0.5. For x=0.1 to 0.3, the samples show a behavior similar to that of Fe2Zr, which is a ferromagnet with a saturation moment of 1.7 Bohr magnetron/Fe atom at 5 K. In the case of x=0.4, however, the saturation moment undergoes a sharp fall to 1.1 Bohr magnetron. Moreover, x=0.4 shows re-entrant behavior with a Tc of about 325 K and a spin freezing temperature of 130 K. © 1997 American Institute of Physics.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.364572
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  • 2
    Electronic Resource
    Electronic Resource
    An efficient asymmetric oxidation of sulfides to sulfoxides (1984)
    s.l. : American Chemical Society
    Journal of the American Chemical Society 106 (1984), S. 8188-8193 
    Details
    ISSN: 1520-5126
    Source: ACS Legacy Archives
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1021/ja00338a030
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  • 3
    Electronic Resource
    Electronic Resource
    Field Resistance to Potato Blight ( Phytophthora infestans) (1956)
    [s.l.] : Nature Publishing Group
    Nature 177 (1956), S. 794-795 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] The nature of field resistance was investigated by Miiller and Haigh1 and by Miiller4. They claimed that susceptible and field-resistant varieties differed in their "probability of becoming infected per unit area of leaf", and they obtained a measure of this probability of becoming infected by ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/177794a0
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  • 4
    Electronic Resource
    Electronic Resource
    A convenient family of chiral shift reagents for measurement of enantiomeric excesses of sulfoxides
    Amsterdam : Elsevier
    Tetrahedron Letters 25 (1984), S. 3467-3470 
    Details
    ISSN: 0040-4039
    Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
    URL: http://linkinghub.elsevier.com/retrieve/pii/S0040-4039(01)91049-4
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  • 5
    Electronic Resource
    Electronic Resource
    Syntheses with nitriles, XCV: Deamination of cytosine derivatives (1995)
    Springer
    Monatshefte für Chemie 126 (1995), S. 91-97 
    Details
    ISSN: 1434-4475
    Keywords: 2,6-Dihydroxypyrimidines ; Pyrimidinones ; Pyrimidine-2,6-diones ; Cytosine
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Zusammenfassung Die Reaktion von 2-Formyl-3-dimethylamino-propennitril (1a) und 2-Ethoxycarbonyl-3-dimethylamino-propennitril (1b) mit substituierten Harnstoffen führte zur Bildung der 2-Cyan-3-ureidoacrlate2, welche unter alkalischen Bedingungen zu den 5-Formyl-, 5-Cyan- oder 5-Alkoxycarbonyl-2-oxopyrimidinen3,6 bzw.7 cyclisiert werden konnten. Reaktion von3 mit Isopentylnitrit ergab eine Mischung aus deaminiertem und zugleich oxidiertem Produkt4 sowie dem Oxoderivat5, welches während der Säulentrennung auf Kieselgel zusätzlich acetalisiert worden war. Die ähnliche Reaktion mit den Alkoxycarbonyl-Derivativen7 führte zur Bildung der 1-Alkyl-5-alkoxycarbonyl-pyrimidin-2,6-dione8a–d.
    Notes: Summary Treatment of 2-formyl-3-dimethylamino-propenenitrile (1a) and 2-ethoxycarbonyl-3-dimethylamino-propenenitrile (1b), resp., with substituted ureas led to the 2-cyano-3-ureidoacrylates2, which can be cyclized under alkaline conditions to give 5-formyl-5-cyano-, and 5-alkoxycarbonyl-2-oxopyrimidine derivatives3,6, and7. Reaction of3 with isopentylnitrite gave a mixture of the deaminated and oxidized product4 and the oxo derivative5, which was acetalized during the separation step. Similar reaction with the alkoxycarbonyl derivatives7 led to the formation of 1-alkyl-5-alkoxycarbonyl-pyrimidine-2,6-diones8a–d.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00811761
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  • 6
    Electronic Resource
    Electronic Resource
    Histological changes in thyroid of rat under the acute exposure of O-chloro-benzylidine malononitrile (1978)
    Springer
    Cellular and molecular life sciences 34 (1978), S. 1327-1327 
    Details
    ISSN: 1420-9071
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Notes: Summary This communication describes histological changes in the thyroid gland of rats under the acute stress of O-chlorobenzylidene malononitrile (CS) (10 mg/kg and 20 mg/kg). It has been observed that CS, when injected, causes histological changes in the thyroid of varying degrees, depending on the dose used.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01981449
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  • 7
    Electronic Resource
    Electronic Resource
    Synthesis and Characterization of Y〈sub〉3〈/sub〉Al〈sub〉5〈/sub〉O〈sub〉12〈/sub〉 Nanocrystals (2007)
    s.l. ; Stafa-Zurich, Switzerland
    Advanced materials research Vol. 26-28 (Oct. 2007), p. 667-670 
    Details
    ISSN: 1662-8985
    Source: Scientific.Net: Materials Science & Technology / Trans Tech Publications Archiv 1984-2008
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Notes: Y3Al5O12 (YAG) is one of the important and extensively used solid state laser hostmaterials. YAG nanocrystals were synthesized by low temperature glycol method. This is amodified sol–gel method performed at low temperature that consists of a mixture of salts, mostlynitrates in an aqueous media. Single phase nanocrystalline YAG was obtained at 850 °C, which islower temperature compared to the other methods such as wet-chemical method. This is however,little higher than the material made by alkoxide sol–gel process. The structural characterization isdone by powder XRD, SEM and TEM techniques. The crystallite sizes range from 20-50 nm for thematerials prepared at 850- 950 °C
    Type of Medium: Electronic Resource
    URL: http://www.tib-hannover.de/fulltexts/2011/0528/01/40/transtech_doi~10.4028%252Fwww.scientific.net%252FAMR.26-28.667.pdf
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  • 8
    Electronic Resource
    Electronic Resource
    Selective aziridination of olefinic esters (1994)
    Springer
    Monatshefte für Chemie 125 (1994), S. 743-746 
    Details
    ISSN: 1434-4475
    Keywords: Aziridine ; Quinazolinone ; Olefinic esters
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Zusammenfassung Oxidation von 3-Amino-2-isobutylchinazolin-4-on (2) mit Bleitetraacetat bei −20°C ergab N-Acetoxyamino-2-isobutylchinazolin-4-on (3), welches mit verschiedenen olefinischen Estern selektiv substituierte 1-(2′-Isobutylchinazolin-4′-on-3′-yl)-aziridin-2-carbonsäureester5a–q lieferte.
    Notes: Summary Oxidation of 3-amino-2-isobutylquinazoline-4-one (2) with lead tetraacetate at −20°C gave N-acetoxyamino-2-isobutylquinazolin-4-one (3), which selectively aziridinated olefinic esters to yield substituted 1-(2′-isobutylquinazolin-4′-one-3′-yl)-aziridine-2-carboxylates5a–q.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01277635
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  • 9
    Electronic Resource
    Electronic Resource
    A short synthesis of 2,3,4-trihydrodibenzofuranes (1994)
    Springer
    Monatshefte für Chemie 125 (1994), S. 971-976 
    Details
    ISSN: 1434-4475
    Keywords: Benzofuran-3-ones ; 2,3,4-Trihydrodibenzofuran-3-ones
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Zusammenfassung Behandlung von 2-Phenoxypropionsäure mit Polyphosphorsäure lieferte die substituierten Benzofuran-3-one (2a–h), welche über3a–h in die 2,3,4-Trihydrodibenzofuran-3-one (4a–h) übergeführt wurden. DurchClemmensen-Reduktion von4a–h wurden die gewünschten 2,3,4-Trihydrobenzofurane (5a–h) erhalten.
    Notes: Summary Treatment of 2-phenoxypropionic acid with polyphosphoric acid gave substituted benzofuran-3-ones (2a–h), which were converted into 2,3,4-trihydrodibenzofuran-3-ones (4a–h)via the compounds3a–h.Clemmensen reduction of the compounds4a–h gave the 2,3,4-trihydrodibenzofuranes (5a–h).
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00812712
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  • 10
    Electronic Resource
    Electronic Resource
    Cellular changes of adrenal under the acute stress of O-chlorobenzylidene malononitrile (CS) (1978)
    Springer
    Cellular and molecular life sciences 34 (1978), S. 494-495 
    Details
    ISSN: 1420-9071
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Notes: Summary This investigation describes histological and cytometrical changes of cortical and medullary tissue of adrenal in rats under the acute stress of O-chlorobenzylidene malononitrile (10 mg/kg and 20 mg/kg). It has been observed that after injection of CS, the adrenal gland showed histological changes both in the cortical and medullary region.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01935948
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