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  • 1970-1974  (11)
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  • 1
    Electronic Resource
    Electronic Resource
    Ferromagnetische Phase in Produkten des Kochprozesses von Cd(OH)2/Fe(OH)3 (1973)
    Springer
    Monatshefte für Chemie 104 (1973), S. 1276-1282 
    Details
    ISSN: 1434-4475
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Notes: Abstract In the system CdO·xFe2O3 formed from co-precipitated and boiled hydroxides of Cadmium(II) and Iron(III) the following can be identified by X-ray study: atx≤0.8-besides the Cd(OH)2 phase-γ-Fe2O3, at 1.5≥x≥0.8 fine crystalline γ-Fe2O3 and traces of α-Fe2O3, at 4〉x〉1.5 both modifications, i.e. γ-Fe2O3 and α-Fe2O3, and atx〉4 only α-Fe2O3. The course of specific magnetisation as a function of composition confirms the X-ray findings.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00910042
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  • 2
    Electronic Resource
    Electronic Resource
    Über die Löslichkeit des Kadmiumferrits in Ameisensäure (1974)
    Springer
    Monatshefte für Chemie 105 (1974), S. 1099-1109 
    Details
    ISSN: 1434-4475
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Notes: Abstract The dissolution process of the system CdFe2O4/H+ has been examined in various concentrations of formic acid. Study of the reaction at 20°, 40°, and 60°C revealed large divergences between expected stoichiometricity in corresponding amounts of ions passing into the solution. The stoichiometry-like process has been achieved only by using 10m-HCOOH and the temperature of 60°C. X-ray identification of preparations after breaking off the dissolution process allowed to find besides cadmium ferrite another iron oxide phases, namely α-Fe2O3 and γ-Fe2O3.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00910278
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  • 3
    Electronic Resource
    Electronic Resource
    Heritability of some characters of rye under open pollination (1972)
    Springer
    Theoretical and applied genetics 42 (1972), S. 168-173 
    Details
    ISSN: 1432-2242
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Summary Present investigations cover the correlation between four characters of maternal plants of rye and the corresponding characters in their offspring. Tabulated results pertain to four two-year periods for the Exp. Sta. Choryń and two such periods for the Exp. Sta. Laski, involving several plant material groups derived from various crosses with Dańkowskie Selekcyjne rye. The effects of average grain weight per ear of the maternal plant on the corresponding yields in the offspring have proved rather small, but sporadically approaching or attaining the limits of significance. The influence of resistance to lodging of the maternal plant on that same character in the offspring has proved no greater, but, in spite of the considerable multidirectional differentiation of the coefficients of correlation and regression, in 4 groups out of a total of 27 they surpassed the limits of significance, sometimes attaining high values. In contrast to these two characters, but in agreement with expectations, there was a fairly pronounced effect of 1000 grain weight and of the maternal plant height on the same characters in the offspring. Significant coefficients of regression for the former characters ranged from 0.11 to 0.22 g, and for the latter from 0.03 to 0.37 cm. The present paper also includes less numerous results of analogous investigations on the relation of characters determined in the microtrials with those examined in the next generation. These results indicate good transmission of earliness, measured by the date of earing, and of the weight of 1000 grains, but a much weaker transmission of resistance to lodging and of grain yields. The conclusions drawn on breeding strategy suggest opportunities for efficient selection under the method of recombination towards short straw and a high 1000 grain weight within maternal plants, and also the advisability of shifting the main impact of selection for yield and resistance to lodging onto the following generations.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00280793
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  • 4
    Electronic Resource
    Electronic Resource
    Untersuchung der magnetostrukturellen Eigenschaften gemeinsam gefällter Hydroxide von Cd2+, Ni2+ und Fe3+ (1972)
    Springer
    Monatshefte für Chemie 103 (1972), S. 775-785 
    Details
    ISSN: 1434-4475
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Zusammenfassung Aus einer Reihe gemeinsam gefällter und in siedendem Wasser gealterter Hydroxide, deren Mischungsverhältnis die Bildung von Cd x Fe1−x [Ni1−x Fe1+x ]O4-Ferriten möglich machte, wurden Präparate erhalten, welche charakteristische Sättigungs-Magnetísierungskurven zeigen. Röntgenographische Analyse und magnetische Untersuchungen zeigten, daß der primäre Ferromagnetismus dieser Präparate dem γ-Fe2O3 zuzuschreiben ist.
    Notes: Abstract From a series of coprecipitated hydroxides, aged by boiling in water, and in which the mixing proportions enabled the formation of Cd x Fe1−x [Ni1−x Fe1+x ]O4-ferrites, preparations were obtained which show characteristic saturation magnetization curves. X-ray analysis and magnetic studies showed that the primary ferromagnetism of these preparations must be assigned to γ-Fe2O3.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00905437
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  • 5
    Electronic Resource
    Electronic Resource
    Die Löslichkeit der Übergangsphasen des Zinkferrits in Salpetersäure (1970)
    Springer
    Monatshefte für Chemie 101 (1970), S. 36-45 
    Details
    ISSN: 1434-4475
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Abstract The solubility in 2n-HNO3 of the products of baking a mixture of ZnO and Fe2O3 between 500° and 1100° C was investigated. From the products of baking up to 600° C, Fe3+ does not dissolve, while Zn2+ dissolves easily. In products of sintering between 650° to 950° C the solubility of Zn2+ is still large, yet decreasing. The content of the solution on Fe3+ increases very strongly for temperatures up to 850° C and is appreciable even at 900° C. Above 950°C sintering temperature, the Fe3+ and Zn2+ content of the solution drops very strongly. The formation of ferrites in the range of 650° to 950° C was confirmed by X-ray powder methods. Above 1000° C fully developed zinc ferrite is found.
    Notes: Zusammenfassung Es wurde die Löslichkeit bei 20° C von durch Sinterung eines Gemisches von ZnO mit Fe2O3 bei 500° C bis 1100° C erhaltenen Präparaten in 2n-HNO3 untersucht. Unter 600° gesinterte Präparate geben kein Fe3+ an die Lösung ab, dagegen leicht Zn2+. Bei Sintertemperaturen von 650 bis 950° C ist die Zinklöslichkeit noch ziemlich groß, aber fallend. Die Fe3+-Lösbarkeit wächst stark bei Temperaturen bis 850° C und ist noch bei 900° C erheblich. Oberhalb 950° C Sintertemperatur fällt der Fe3+- und der Zn2+-Gehalt stark ab. Röntgenographisch wurde der Ferritisierungsprozeß im Bereich von 650 bis 950° C bestätigt. Oberhalb 1000° C tritt ein vollkommen ausgebildetes Zinkferrit auf.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00907523
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  • 6
    Electronic Resource
    Electronic Resource
    Die Löslichkeit der Übergangsphasen von Cadmiumferrit in Salpetersäure (1970)
    Springer
    Monatshefte für Chemie 101 (1970), S. 1203-1207 
    Details
    ISSN: 1434-4475
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Abstract Preparations, which where obtained by baking mixtures of CdO and Fe2O3 between 500 and 1100°C, where investigated in regard to their solubilities in 2n-HNO3. Complete dissolution of Cd within short periods of time was observed for baking temperatures of 700°C. Above this temperature, the Cd2+-content of the solutions decreases slowly. Fe3+ dissolves out of preparations between 700 and 900°C. When heated above 900°, the Fe3+ content in solutions decreases. X-ray powder investigations showed a progressive process of ferrite formation, starting at 700°. Above 950°, a ferrite phase is formed.
    Notes: Zusammenfassung Es wurde die Löslichkeit in 2n-HNO3 von durch Sinterung eines Gemisches von CdO mit Fe2O3 bei 500°C bis 1100°C erhaltenen Präparaten untersucht. Es wurde eine gänzliche Auflösung des Cadmiums nach kurzen Lösezeiten für 700°C Glühtemperatur festgestellt. Oberhalb dieser Temperature fällt der Cd2+-Gehalt der Lösung langsam ab. Das Fe3+ geht in Lösung aus bei 700 bis 900°C geglühten Präparaten. Oberhalb 900°C fällt sein Gehalt in der Lösung merklich ab. Röntgenographisch wurde ein fortschreitender Ferritisierungsprozeß, von 700°C beginnend, festgestellt. Oberhalb 950°C tritt eine Ferritphase auf.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00908566
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  • 7
    Electronic Resource
    Electronic Resource
    Untersuchung der ferromagnetischen Produkte der explosiven reaktionen zwischen Ammoniumeisencyanid und Kupfernitrat (1973)
    Springer
    Journal of thermal analysis and calorimetry 5 (1973), S. 67-75 
    Details
    ISSN: 1572-8943
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Résumé Les mélanges humides de (NH4)4[Fe(CN)6] et de Cu(NO3)2 chauffés à 220
    Abstract: Zusammenfassung Feuchte Gemische von (NH4)4[Fe(CN)6] und Cu(NO3)2 reagieren explosionsartig beim Erhitzen auf 220
    Notes: Abstract The wet mixtures of ammonium hexacyanoferrate, (NH4)4[Fe(CN)6], and cupric nitrate, Cu(NO3)2, react explosively when heated at 220
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01914475
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  • 8
    Electronic Resource
    Electronic Resource
    Darstellung und einige physikalisch-chemische Eigenschaften des γ -FeOOD (1971)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 383 (1971), S. 90-95 
    Details
    ISSN: 0044-2313
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: The light and heavy γ -variety of iron hydroxide have been prepared by oxydation of Fe(OH)2 and Fe(OD)2 with air oxygen. The formation of cristalline γ - FeOOD proceeds only in a very limited range of temperature, Fe2+ concentration, and duration and velocity of the supplied air. Even at optimal conditions established experimentally the cristallites of the heavy variety are not as ideal as those of the light hydroxide prepared at the same circumstances.
    Notes: Es wurde leichtes und schweres γ-Eisenhydroxid durch Oxydation von Fe(OH)2 und Fe(OD)2 mit Luftsauerstoff erhalten. Die Darstellung von γ-FeOOD darf nur in einem sehr begrenzten Intervall der Temperatur, der Fe2+-Ionenkonzentration und der Zeit des Luftdurchleitens stattfinden. Selbst unter experimentell festgelegten optimalen Versuchsbedingungen sind die Kristallite von γ-FeOOD nicht so gut ausgebildet wie bei gleich-hergestelltem γ-FeOOH.
    Additional Material: 8 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/zaac.19713830111
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  • 9
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    4πβ−γ anticoincidence method and apparatus for radioactive concentration measurements of the radioactive solutions (1972)
    Elsevier
    Details
    Publication Date: 1972-01-01
    Print ISSN: 0029-554X
    Electronic ISSN: 1878-3759
    Topics: Energy, Environment Protection, Nuclear Power Engineering , Physics
    Published by Elsevier
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  • 10
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    Barium-Strontium Ferrite with Admixtures of Elements of the III-rd Group (1970)
    Institute of Physics
    Details
    Publication Date: 1970-06-01
    Print ISSN: 0021-4922
    Electronic ISSN: 1347-4065
    Topics: Physics
    Published by Institute of Physics
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