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  • 1
    Electronic Resource
    Electronic Resource
    Springer
    Journal of orofacial orthopedics 37 (1976), S. 480-480 
    ISSN: 1615-6714
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Type of Medium: Electronic Resource
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  • 2
    ISSN: 1615-6714
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Description / Table of Contents: Summary The steps in making a gnathologic positioner are followed by a short review of the reasons for its use. In a research of 80 patients who after treatment have been undergoing further treatment with a positioner it has been found that the results were satisfactory whenever the appliance was used in the recommended manner.
    Abstract: Résumé Ce travail décrit les phases de la fabrication d'un «positioner» gnathologique. Après traitement par appareillage fixe, 80 patients ont utilisé ce positioner pendant 4–5 mois et il s'est avéré que si cet appareil est porté pendant le temps recommandé, il est capable d'obtenir l'excellente occlusion que réclament les gnathologues.
    Notes: Zusammenfassung Beschrieben wird der zeitliche Ablauf der Herstellung eines gnathologischen Positioners. Bei der Nachuntersuchung von 80 Patienten, die nach einer kieferorthopädischen Behandlung mit festsitzenden Apparaten für durchschnittlich 4 bis 5 Monate einen gnathologischen Positioner getragen haben, zeigte sich, daß bei Einhaltung der empfohlenen Tragezeit dieses Gerät in der Lage ist, eine Feineinstellung des Gebisses zu erreichen, die den Anforderungen der Gnathologen entspricht.
    Type of Medium: Electronic Resource
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  • 3
    ISSN: 1612-4766
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Type of Medium: Electronic Resource
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  • 4
    Electronic Resource
    Electronic Resource
    Springer
    Journal of pest science 43 (1970), S. 128-128 
    ISSN: 1612-4766
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Type of Medium: Electronic Resource
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  • 5
    ISSN: 0570-0833
    Keywords: Chemistry ; General Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
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  • 6
    ISSN: 1435-1536
    Keywords: dünne Filme ; nichtionogene Tenside ; Elektrolyteinfluß
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology , Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Description / Table of Contents: Abstract The stability of thin aqueous films between different hydrophobic phases was investigated in dependence of the condition of hydratation of the polyoxyethylene surfactant. The hydratation was changed by addition of different, high concentrated electrolytes. On exceeding a critical electrolyte concentration the films become unstable, if they are limited by at least one phase, which is sufficiently polar. The critical concentrations depends on the kind of organic liquid and electrolyte respectively and the number of ether groups in the surfactant molecule. The observed effect of destabilization is explained by strengthening of interaction of far extending dehydrated surfactant molecules with the organic phase. Further possible mechanism of film destabilization are discussed.
    Notes: Zusammenfassung Die Stabilität dünner, wäßriger Filme zwischen unterschiedlichen hydrophoben Phasen wurde in Abhängigkeit vom Hydratationszustand des stabilisierenden Tensids vom Ethylenoxid-Addukt-Typ untersucht. Der Hydratationszustand wurde durch Zugabe verschiedener Elektrolyte in hohen Konzentrationen variiert. Die Filme werden beim Überschreiten einer kritischen Elektrolytkonzentration instabil, wenn sie mindestens einseitig von einer hinreichend polaren organischen Flüssigkeit begrenzt werden. Die kritische Konzentration ist Von der Art der organischen Flüssigkeit, der Art des Elektrolyten und der Zahl der EO-Gruppen im Tensidmolekül abhängig. Der festgestellte Destabilisierungseffekt wird durch eine verstärkte Wechselwirkung der weitgehend dehydratisierten Tensidmoleküle mit der organischen Phase erklärt. Weitere mögliche Mechanismen der Film-Destabilisierung werden diskutiert.
    Type of Medium: Electronic Resource
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  • 7
    ISSN: 1435-1536
    Keywords: Foam films ; emulsion films ; film rupture ; rupture theory ; hole nucleation
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology , Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Notes: Abstract The concept that rupture of bilayer films is caused by nucleation of holes was checked for foam and emulsion films stabilized by the same nonionic surfactant. Newtonian black (NB) films were formed in a ring-cell from a biconcave drop with air or nonane, respectively, as the ambient phase. The lifetime of the foam and emulsion films increases with surfactant concentration. This relation is analysed on the basis of above mentioned theory.
    Type of Medium: Electronic Resource
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  • 8
    ISSN: 1435-1536
    Keywords: Key words Foam films ; film thickness ; contact angle
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology , Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Notes: Abstract  In the present study a detailed investigation of the thickness and contact angles of foam films prepared from sodium dodecyl sulfate as a function of LiCl concentration was carried out. Concentration of LiCl was varied in a wide range from 0.05 to 2.0 M. It was found that in the investigated system Newton black foam films are formed at LiCl concentrations higher than 1.4 M. This observation is proved by contact angle measurements and calculated values for the change of interaction free energy between common and Newton black films.
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  • 9
    Electronic Resource
    Electronic Resource
    Springer
    Langenbeck's archives of surgery 364 (1984), S. 111-115 
    ISSN: 1435-2451
    Keywords: Oesophageal carcinoma ; Judgement of preoperative risk ; Choice of surgical treatment ; Oesophaguscarcinom ; Präoperative Risikobeurteilung ; Verfahrenswahl
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Description / Table of Contents: Zusammenfassung Das Risiko von Eingriffen an der Speiseröhre, sichtbar in der Klinikletalität, wird an 72 von einem Operateur vorgenommenen Speiseröhrenresektionen analysiert. Folgende Parameter werden benutzt: 1. Ein für Carcinompatienten entwickelter und prospektiv untersuchter Ernährungsindex, 2. der EKG-Befund, 3. die Lungenfunktion. Nimmt man die 3 Indices zusammen, so ergibt sich eine gesicherte Korrelation zwischen präoperativer Risikobeurteilung und Letalität. Die präoperative Bewertung der Operationsbelastung ist für den Patienten mit Speiseröhrenkrebs wichtig, da hier 3 Verfahrensgruppen der chirurgischen Behandlung zur Verfügung stehen, deren Risiken sich deutlich unterscheiden.
    Notes: Summary Surgery of oesophageal cancer has a high risk demonstrated by the hospital lethality. 72 resections of the oesophagus done by one surgeon are analysed. The following parameters were used: 1) a nutritional index developed in carcinoma patients in a prospective analysis, 2) the EKG result, 3) the lung-function. Adding these 3 indices we get a certain correlation between the judgement of the preoperative risk and hospital lethality. The preoperative criteria of risk are essential for patients with cancer of the oesophagus since we have to choose among 3 groups of surgical treatment, the risks of which are significantly different.
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  • 10
    ISSN: 1570-7458
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Description / Table of Contents: Summary Reciprocal grafts of aphid-resistant (Rastatter) and susceptible (Schlanstedter) field beans (Vicia faba) should demonstrate whether the resistance of the scions is influenced by the stock or not. To ensure a solid and inflexible connection between the partners to be grafted a glass capillary was fitted in the stem hollows of both the scion and the stock. In “pertelar” cages (Müller 1954) one young aptera of Aphis fabae could choose to infest a leaf of a grafted scion or a leaf of a normal plant. The percentage of initial colonies established by 740 such tested virginoparae decreased from 90,6 (S/R+S) to 78,5 (S/R+R), 76,7 (R/S+S) and 48,8% (R/S+R). In all cases, where a decision was possible at all, S-leafs were preferred to R-leafs, independently of whether they grew on a scion or on a normal plant (Table I): With reproduction rate experiments the percent of apterous virginoparae settling on grafts and controls dropped in a similar manner from 51,0 on S and 43,9 on S/R to 21,8 on R and 17,7 on R/S respectively (Table II). Also the reproductive rate (number of larvae born by an apterous virginopara in the time between the birth and maturity of its first born daughter decreased from S (33,6+-9,0) and S/R (31,8+-8,3) to R (27,2+-8,2) and R/S (26,7+-7,9)). There is no statistically significant difference between S and S/R on the one side and R and R/S on the other (Fig. 4). The diminution of numbers from S to S/R and from R to R/S respectively in all experiments is suggested to be an effect of grafting in itself rather than a mutual influence of the partners. The present results prove that both the preference-nonpreference-und the antibiosismechanism of the relative aphid resistance of R-and S-field beans are not altered by the stock after reciprocal grafting. In view of this and the findings of Harvey & Hackerott (1958) on alfalfa resistance against Therioapbis maculata substances produced by the roots cannot be the cause of aphid resistance.
    Notes: Zusammenfassung Das Präferenz-Nonpräferenzverhalten sowie die antibiotisch beeinfluβte Höhe der Reproduktionsrate von Aphis fabae gegenüber Ackerbohnensorten (Vicia faba) änderten sich nicht, wenn eine resistente Sorte (Rastatter) auf eine anfällige (Schlanstedter) gepfropft wurde oder umgekehrt. Verhalten und Vermehrung der Blattläuse richteten sich stets nach dem Sortencharakter des Reises, unabhängig von dessen Unterlage.
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