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  • 1
    Electronic Resource
    Electronic Resource
    Springer
    European journal of pediatrics 135 (1980), S. 181-187 
    ISSN: 1432-1076
    Keywords: Cerebral palsy ; Oral manifestation ; Structure-activity relationship ; Asymmetric (asymmetry)
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract Twenty-six children with cerebral palsy were examined with respect to structural asymmetry of the mouth. In 19 children there were clear cut correlations between symmetry/asymmetry of voluntary function and the oral findings. Patients with symmetrical patterns of movements had symmetrical denition, while in those with asymmetrical function the favoured side corresponded to the side with structural changes. Apparent exceptions to this rule in 7 children could be resolved in 6 by analysis of their complex case histories. Fifty normal controls showed oral asymmetries of nearly identical frequency and magnitude. In this respect there is no difference between the normal and the handicapped group.
    Type of Medium: Electronic Resource
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  • 2
    ISSN: 1420-9098
    Keywords: Hymenoptera ; social wasps ; Polybia ; prey capture
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Summary Polybia sericea (Hymenoptera: Vespidae) prey foraging was studied by following individual foragers as they hunted in the field, by observing how wasps handled prey once they had captured it, and by observing wasps as they returned to the nest with prey. Wasps were most likely to forage for prey between 0700 and 1300 hours and between 1600 and 1700 hours. The prey foraging sequence consisted of the behaviours high flight, search, touch, land, groom, walk, bite and malaxate. Captured small prey were malaxated and carried to the nest. Wasps removed the gut from large prey and dragged the meat up a twig or grass stem. A load of the meat was then bitten off and malaxated; the remainder was cached while the wasp made an orientation flight and returned to the nest. The forager returned within minutes for the remainder of the prey. Experiments demonstrated that caching the prey remains above the ground rather than close to the ground, where the prey are generally captured, reduces the chance that the prey will be found and expropriated by ants.
    Type of Medium: Electronic Resource
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  • 3
    ISSN: 1588-2837
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Notes: Abstract Isomerization of n-butane over bifunctional Pd-impregnated catalyst pellets consisting of molecular sieve SAPO-31 or SAPO-11 and a silica binder has been investigated. Pd/SAPO-31 converts n-butane to iso-butane at temperatures of 700–725 K with good selectivities (more than 70% at conversion levels of 35–40%). The high activity is attributed to the outstanding properties of medium pore SAPOs for catalyzing the skeletal isomerization of intermediate butenes, which is considered to be the critical step in the reaction sequence.
    Type of Medium: Electronic Resource
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  • 4
    ISSN: 1615-6714
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Description / Table of Contents: Summary The purpose of this study was to examine functional occlusion of impacted maxillary canines which had been moved orthodontically into the line of occlusion. Examinations were performed on both patients and on an articulator, which was adapted to correspond to the axiotraphical findigns. Functional contracts on the working side durign lateral movement of the mandible were found in all orthodontically aligned impacted canines. Half the aligned teeth were involved in canine guidance, half in group function. Balancing side interferences were detected in 22% of the cases. The result of this study revealed a nearly identical function in the aligned canines when compared with the spontaneously erupted canines on the other side of the same maxilla. This became apparent during lateral excursion of the mandible. The angle of mesiodistal inclination of the tooth central axis with an occlusal plane was 84 °, for aligned and 82 °, on average for the spontaneously erupted canines.
    Notes: Zusammenfassung Ziel der Untersuchung war es, retinierte Oberkiefereckzähne nach chirurgisch/kieferorthopädischer Einreihung hinsichtlich ihrer Funtion bei der dynamischen Okklusion sowie ihrer Einstellung im Zahnbogen zu analysieren. Dazu wurden die Art der Laterotrusionsführung untersucht und vorhandene Balancekontakte registriert. Dies erfolgte sowhol am Patienten als auch im Artikulator, der jeweils entsprechend den Ergebnissen der Axiographie adaptiert war. Alle mobilisierten Eckzähne waren an der Führung des Unterkiefers bei der lateralbewegung beteiligt, und zwar in jeweils der Hälfte deer Fälle an einer Eckzahnführung (reine Eckzhanführung, Front-/Eckzahnführung, Eckzahndominanz) bzw. an einer Gruppenführung (partielle, totale). Balancekontakte wurden in vier von 18 Fällen registriert, in denen ein mobilisierter Eckzahn an der Laterotrusion beteiligt war. Diese Kontakte waren ausschließlich auf den zweiten Molaren lokalisiert. Die Achsen der eingereihten Eckzähne waren so eingestellt, daß eine Kronenneigung nach mesial vorlag. Insgesamt zeigte sich, daß die untersuchten kieferorthopädisch eingereihten Eckzähne den spontan durchgebrochenen Kontrollzähnen funktionell gleichwertig waren, was die unteersuchten Parameter betraf.
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  • 5
    ISSN: 1089-7623
    Source: AIP Digital Archive
    Topics: Physics , Electrical Engineering, Measurement and Control Technology
    Notes: We present the first photoelectron spectrometry experiment on a singly charged ion beam. Taking advantage of the high photon flux emitted in the undulator SU6 of Super-ACO, we have measured photoelectron spectra produced in the resonant photoionization of Ca+ ions at 33.2-eV photon energy. The success of this experiment depended strongly on the photon flux available. We demonstrate the capability of photoelectron spectrometry to precisely calibrate the photon spectrum emitted in the undulator.
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  • 6
    ISSN: 1618-2650
    Keywords: Polarographie, rechnerunterstützt ; Aufbau der Steuerung
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Zusammenfassung Es werden Möglichkeiten der Kopplung und Steuerung in der Polarographie mit programmierbaren Tischrechnern aufgezeigt. Die Blockdiagramme der Gerätekombinationen und der Steuerlogik werden dargestellt und erläutert. Auf neue Auswertemöglichkeiten solcher Systeme wird kurz hingewiesen.
    Notes: Summary The possibility of computerizing polarography is pointed out. Programmable desk-top computers may be used for data transfer and also for controlling the instrument. The equipment and some details of the switching unit are explained and are given as main diagrams. New methods of evaluation in polarography are mentioned.
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  • 7
    ISSN: 1618-2650
    Keywords: Polarographie ; rechnerunterstützt, Festlegung des Basislinien-Verlaufs
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Zusammenfassung Die rechnerunterstützte Polarographie setzt eine mit mathematischen Kriterien beschreibbare Ermittlung der Basislinien voraus. Es werden zwei Modellfunktionen beschrieben, die sich für diesen Zweck eignen: eine Exponentialfunktion mit drei Parametern und ein Polynom 3. Grades. Bei Festlegung geeigneter Nebenbedingungen ist das Polynom 3. Grades unempfindlicher gegenüber numerischen Problemen und besitzt zudem den Vorteil wesentlich kürzerer Rechenzeiten. An verschiedenen Beispielen wird dieses Verfahren diskutiert.
    Notes: Summary In the computer controlled evaluation in polarography one problem is to find mathematical criteria to approximate the baseline. Two modell functions are described in this paper: a three-parametric exponential function and the third-degree polynomial. It is possible to give some conditions for using the polynomial. The advantages are in this case the shorter timer required for all calculations and the higher stability towards numerical problems. Some examples are given to discuss the proposed method.
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  • 8
    Electronic Resource
    Electronic Resource
    Oxford [u.a.] : International Union of Crystallography (IUCr)
    Acta crystallographica 47 (1991), S. 2443-2444 
    ISSN: 1600-5759
    Source: Crystallography Journals Online : IUCR Backfile Archive 1948-2001
    Topics: Chemistry and Pharmacology , Geosciences , Physics
    Type of Medium: Electronic Resource
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  • 9
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    ISSN: 0365-9496
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
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  • 10
    ISSN: 1365-3083
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Medicine
    Notes: The splenic mononuclear cells (MNC) of rabbits 7-14 and 30-48 days following primary intravenous immunization with sheep erythrocytes generated large numbers of antibody-secreting or plaque-forming cells (PFC) in secondary immune responses induced in vitro, whereas the splenic MNC obtained from rabbits 18-30 days following primary intravenous immunization generated poor secondary immune responses (few PFC) in vitro. However, these latter splenic MNC depleted of T cells consistently generated many PFC in the secondary immune response in vitro. Furthermore, the splenic MNC of rabbits thymectomized prior to day 3 following primary intravenous immunization also generated good secondary immune responses in vitro, irrespective of the time of killing post-immunization, whereas the splenic MNC of rabbits thymectomized after day 7 following primary immunization generated poor secondary immune responses in vitro. These results indicate that the depressed ability of the splenic MNC, obtained from rabbits killed between days 18 and 30 post-primary immunization, to generate significant secondary immune responses in vitro is due to suppressor T cells. The suppressor cells are referred to as immune spleen suppressor cells or ISSC. It was demonstrated that the suppression by the ISSC is antigen-specific and that the ISSC secrete an antigen-specific suppressor factor referred to as immune spleen suppressor factor or ISSF. It is concluded that the ISSC are generated in the thymus within a few days following primary immunization, that they migrate to and infiltrate the spleen between days 3 and 7 following primary immunization, and that they suppress or down-regulate further antibody synthesis via the secretion, locally of ISSF.
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