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  • 1995-1999  (3)
  • 1965-1969  (1)
  • 1960-1964  (2)
  • 1
    Electronic Resource
    Electronic Resource
    Oxford, UK : Blackwell Publishing Ltd
    Plant breeding 116 (1997), S. 0 
    ISSN: 1439-0523
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: Crosses were made between seven hexaploid wheat genotypes. Twenty-one F1 hybrids and their parents were grown in a greenhouse with 16 h day/8 h night at 25°C and 15°C, respectively. The experiment was a complete randomized block design with three replications. Each replication consisted of one pot with three plants. Anther culture was performed in two different induction media (CHB and W14) and androgenetic traits were studied. Statistical analysis was carried out separately for each induction medium. Genetic variation was highly significant for androgenetic traits and the best parent (IBPT 19) produced 68 embryos and 9.3 green plants per 100 anthers in CHB medium. Genetic components were affected by induction media and some components were significant in one medium and non significant in the other. General combining ability (GCA) was significant for all androgenetic traits, except for albino plant regeneration in both media and total plant regeneration in CHB medium, whereas specific combining ability (SCA) was not significant for the traits studied. Narrow sense heritability was high for embryo induction frequency and green and total plant regeneration. All our results indicate that androgenetic parameters can be improved in hexaploid wheat by genetic means.
    Type of Medium: Electronic Resource
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  • 2
    Electronic Resource
    Electronic Resource
    Oxford, UK : Blackwell Science Ltd
    European journal of neuroscience 10 (1998), S. 0 
    ISSN: 1460-9568
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Medicine
    Notes: Neurons of a distinct type in CA1 area stratum radiatum of the rat hippocampus have been found to express a direct cellular form of long-term potentiation (LTP, Maccaferri & McBain, 1996, J. Neurosci.16, 5334), but their functional identity, i.e. whether interneuron or principal cell, remained unknown. Whole cell recording from hippocampal slices in vitro was combined with light and electron microscopy to answer this question. LTP was robustly induced by a pairing protocol and physiological properties were measured in radiatum giant cells (RGCs) using biocytin containing pipettes. Reconstruction of the cells' dendritic and axonal arbor revealed morphological properties similar to CA1 pyramidal cells with some characteristic differences. They typically had two large diameter apical dendrites, or when only one dendrite arose, it soon bifurcated. Apical dendrites formed a dendritic tuft in stratum lacunosum-moleculare and the dendrites, but not the somata, were densely covered with conventional spines. The axon arose from the basal pole of the soma, descended to stratum oriens and emitted several axon terminals bearing collaterals that travelled horizontally, remaining in stratum oriens. The main, myelinated axon trunks turned towards the fimbria. In the electron microscope axon terminals were found to form asymmetrical synapses on postsynaptic dendritic shafts and dendritic spines in stratum oriens. The dendrites received asymmetrical synapses, mostly on their spines. The axon initial segments also received several synapses, a feature never observed on interneurons. All the above characteristics support the conclusion that RGCs are excitatory principal neurons.
    Type of Medium: Electronic Resource
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  • 3
    Electronic Resource
    Electronic Resource
    Springer
    Fresenius' Zeitschrift für analytische Chemie 200 (1964), S. 321-326 
    ISSN: 1618-2650
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Summary The effect of organic solvents on the emission in flame photometry has been investigated and has been found to depend on the specific surface of the atomized substance and also on the heat of evaporation. A new method has been worked out for the determination of 10−4 to 10−5 % K in sodium salts and K and Na in lithium salts, respectively. It is based on the evaluation of three different wave-lengths.
    Notes: Zusammenfassung Es wurde der Einfluß von organischen Lösungsmitteln auf die flammenphotometrische Emission untersucht und festgestellt, daß neben der spezifischen Oberfläche auch die Verdampfungswärme eine Rolle spielt. Eine Methode unter Benutzung von 3 Wellenlängen wurde zur Bestimmung von 10−4–10−5 % K bzw. Na in Na- bzw. Li-Salzen ausgearbeitet.
    Type of Medium: Electronic Resource
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  • 4
    Electronic Resource
    Electronic Resource
    Springer
    Microchimica acta 54 (1966), S. 689-698 
    ISSN: 1436-5073
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Summary A report is given of the heterogeneous rubber membrane electrodes made from ionites and from precipitates, and of the relationships derived for them. The measuring range can be approximated if the constants are known. The latter can be calculated with the aid of the lower limits of the measurement. The analytical and physical-chemical applications of the electrodes are mentioned.
    Abstract: Résumé Les auteurs présentent un compte rendu sur l'emploi d'électrodes à membranes de caoutchouc hétérogènes préparées avec l'ionite et avec des précipités, et sur les relations qui en dérivent. Si l'on connaît les constantes, on peut alors estimer le domaine de mesure. Les constantes peuvent se calculer d'après les limites inférieures du dosage. On discute l'applicabilité analytique et physico-chimique des électrodes.
    Notes: Zusammenfassung Die Verfasser berichten über mit Ioniten und mit Niederschlägen hergestellte heterogene Gummimembranelektroden und die dafür abgeleiteten Zusammenhänge. Bei Kenntnis der Konstanten läßt sich damit der Meßbereich schätzen. Mit Hilfe der unteren Grenze der Messung sind die Konstanten berechenbar. Die analytische und physikalischchemische Anwendbarkeit der Elektroden wird erörtert.
    Type of Medium: Electronic Resource
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  • 5
    Electronic Resource
    Electronic Resource
    Springer
    Microchimica acta 52 (1964), S. 565-570 
    ISSN: 1436-5073
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Summary On the basis of investigations made with paraffin- and rubber membranes, it was shown that with their help it is possible to determine nickel potentiometrically without prior separation even in the presence of cobalt and zinc. In pure solution, the limit of determination is 10−6 mol Ni/1. In the presence of cobalt and zinc the lower limit of the nickel determination is 10−2% of the quantity of cobalt or zinc.
    Abstract: Résumé On a établi d'après les recherches effectuées en se servant de membranes de paraffine et de caoutchouc que l'on peut doser potentiométriquement le nickel même en présence de cobalt et de zinc, sans séparation préalable. La limite de dilution atteint 10−6 mol Ni/1 en solution pure. En présence de cobalt et de zinc, la limite inférieure du dosage du nickel s'élève à 10−2% de la quantité de cobalt ou de zinc.
    Notes: Zusammenfassung Auf Grund durchgeführter Untersuchungen mit Paraffin- und Gummimembranen wurde festgestellt, daß sich mit deren Hilfe Nickel auch in Gegenwart von Kobalt und Zink ohne vorherige Trennung potentiometrisch bestimmen läßt. Die Bestimmungsgrenze liegt bei 10−6 Mol Ni/1 in reiner Lösung. Bei Gegenwart von Kobalt und Zink beträgt die untere Grenze der Nickelbestimmung 10−2% der Kobalt- bzw. Zinkmenge.
    Type of Medium: Electronic Resource
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  • 6
    ISSN: 1434-9949
    Keywords: Key words:Diclofenac – Efficacy – Endoscopy – Nabumetone – Osteoarthritis – Safety
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract: The aim of the study was to compare the efficacy and the effects on the mucosa of the gastrointestinal tract (GIT) of nabumetone and diclofenac retard in patients with osteoarthritis (OA). An open, multicentre, randomised, comparative, endoscopy-blind parallel group study included 201 patients with nabumetone and 193 patients with diclofenac retard suffering from moderate to severe OA of the knee or hip joint. Twelve clinical efficacy variables were assessed and a portion of the population underwent gastroduodenoscopy. All patients exhibited significant improvement in pain severity and pain relief (p50.001 and p50.0001, respectively) but there were no differences between the groups for all the efficacy variables. Eleven per cent of patients on nabumetone and 19% on diclofenac experienced GIT side-effects. Sixty-nine patients with nabumetone and 61 with diclofenac underwent gastroduodenoscopy. The differences in the mucosal grade for the oesophagus, stomach and duodenum at baseline were not significant. In the oesophagus there were significantly less changes after treatment with nabumetone (p = 0.007) than with diclofenac; there were similar findings in the stomach (p50.001) but the difference in the duodenum was not significant. This study indicates that nabumetone and diclofenac retard have similar efficacy in the treatment of OA, but nabumetone has significantly fewer GIT side-effects.
    Type of Medium: Electronic Resource
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