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  • 1
    Electronic Resource
    Electronic Resource
    New multidentate ligands. XVI. Aqueous coordination chemistry of N,N'-bis(2-hydroxybenzyl)ethylenediamine-N,N'-bis(methylenephosphonic) acid (1975)
    s.l. : American Chemical Society
    Inorganic chemistry 14 (1975), S. 468-473 
    Details
    ISSN: 1520-510X
    Source: ACS Legacy Archives
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1021/ic50145a003
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  • 2
    Electronic Resource
    Electronic Resource
    Combination of dioxygen with N,N-bis(2-aminoethyl)glycinatocobalt(II) and with diethylenetriamine-N-acetatocobalt(II) (1975)
    s.l. : American Chemical Society
    Inorganic chemistry 14 (1975), S. 2322-2326 
    Details
    ISSN: 1520-510X
    Source: ACS Legacy Archives
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1021/ic50152a005
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  • 3
    Electronic Resource
    Electronic Resource
    X-ray Studies on Liquids: the Inner Peak for Alcohols and Acids (1938)
    s.l. : American Chemical Society
    Journal of the American Chemical Society 60 (1938), S. 779-783 
    Details
    ISSN: 1520-5126
    Source: ACS Legacy Archives
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1021/ja01271a013
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  • 4
    Electronic Resource
    Electronic Resource
    Secondary Clumping Effect in Human Citrated Platelet-Rich Plasma Produced by Adenosine Diphosphate and Adrenaline (1966)
    [s.l.] : Nature Publishing Group
    Nature 211 (1966), S. 140-144 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] THE addition, of thrombin to platelet-rich plasma (PRP) induces platelets to release rapidly adenine nucleotides and 5-hydroxytryptamine1, and the platelets undergo 'viscous metamorphosis'. As only a small amount of protein is released at the same time, it is probable that a generalized increase in ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/211140a0
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  • 5
    Electronic Resource
    Electronic Resource
    The electrodeposition of aluminium from molten aluminium chloride/sodium chloride (1972)
    Springer
    Journal of applied electrochemistry 2 (1972), S. 217-222 
    Details
    ISSN: 1572-8838
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology , Electrical Engineering, Measurement and Control Technology
    Notes: Abstract The electrodeposition of aluminium from an AlCl3/NaCl melt (80 wt % purified A1C13, 20 wt % NaCl at 175°C) has been studied and conditions established for the production of good quality electroplate on steel. To obtain a coherent, dendrite-free plate at current densities up to 16 mA/cm2, the presence of not less than about 0.07 wt % hydrogen chloride was found to be essential. Under these conditions the current efficiency was 85%. Continued plating resulted in a progressive increase in current efficiency up to practically 100% and a progressive deterioration in plate quality. Addition of more HCl at this stage restored the original conditions. These observations explain inconsistencies in previously reported values for current efficiency and maximum current density. The mechanism of the action of HCl was not established but it is suggested that it may have an action akin to chemical polishing by dissolving off the high spots on the already deposited aluminium. Alternatively, the electrolytic reduction of hydrogen preferentially on active sites may block these off and so prevent the build-up of aluminium dendrites.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02354979
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  • 6
    Electronic Resource
    Electronic Resource
    The abdominal motor system of the crayfish, Cherax destructor. I. Morphology and physiology of the superficial extensor motor neurons (1998)
    Springer
    Journal of comparative physiology 183 (1998), S. 583-601 
    Details
    ISSN: 1432-1351
    Keywords: Key words Abdominal extensor motor neurons ; Morphology ; Physiology ; Stretch receptors ; Crayfish
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Notes: Abstract Using extracellular and intracellular stimulation, recording and dye-filling, we identified and studied the superficial extensor motor neurons of the crayfish, Cherax destructor. Functional associations of each neuron were characterised by recording its responses to sensory and abdominal cord inputs, its extensor muscle innervation pattern and its relationships with other neurons. Two clear associations were found among the six neurons of each segment. A medium-sized excitor (no. 3), that innervates a substantial percentage of extensor muscle fibres, and the largest excitor (no. 6), recruited during peak, excitation, were inhibited by input from unknown interneurons that excited the common inhibitor (no. 5). Likewise, these excitors received excitatory input when the inhibitor was silent. Another medium-sized neuron (no. 4) that innervates many muscle fibres was co-active with one of the small excitors (no. 2). The two medium-sized neurons were never active at the same time, and these two groupings may be determined by pre-motor interneurons. The implications of these findings for our understanding of motor control in this system are discussed.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s003590050284
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  • 7
    Electronic Resource
    Electronic Resource
    The abdominal motor system of the crayfish, Cherax destructor. II. Morphology and physiology of the deep extensor motor neurons (1998)
    Springer
    Journal of comparative physiology 183 (1998), S. 603-619 
    Details
    ISSN: 1432-1351
    Keywords: Key words Abdominal extensor motor neurons ; Morphology ; Physiology ; Stretch receptors ; Crayfish
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Notes: Abstract Two opposing muscle systems underlie abdominal contractions during escape swimming in crayfish. In this study we used extracellular and intracellular stimulation, recording and dye-filling to systematically identify each of the five deep extensor excitors and single inhibitor of the crayfish, Cherax destructor. Functional associations of each neuron were characterised by recording its responses to sensory and abdominal cord inputs, its extensor muscle innervation pattern, and its relationships with other neurons. Each excitor receives excitatory input from the tonic abdominal stretch receptors and the largest neuron also receives input from the phasic stretch receptor. The two largest excitors innervate the muscle bundle containing the fastest fibres and may be electronically coupled. The smaller neurons may also be electronically coupled and innervate the remaining deep extensor fibres which display dynamic characteristics from fast to medium-fast. The inhibitor does not receive input from the stretch receptors, but is strongly excited by tactile afferents. The implications of these findings for the current models of the control of abdominal tailflips and swimming are discussed.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s003590050285
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  • 8
    Electronic Resource
    Electronic Resource
    Mandibular movements and their control inHomarus gammarus (1976)
    Springer
    Journal of comparative physiology 106 (1976), S. 193-206 
    Details
    ISSN: 1432-1351
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Notes: Summary 1. A method is described whereby myogram recordings can be made from the mandibular muscles of freely moving and feeding lobsters. 2. Test animals were fed a standardized substrate (aNephrops leg) and myograms were recorded from the major muscles responsible for mandibular opening and closing. Concomitant mandibular movements were also recorded in restrained animals. 3. The mandibles co-operate with the third maxillipeds in two different feeding roles: Synchronous and asynchronous. This study mainly concerns itself with the synchronous role of the mandibles in which they bite bilaterally on the substrate and help to break it down. 4. The biting cycle falls into three sections: opening, closing and biting (Fig. 1A). These each vary with cycle duration but not in the same way (Fig. 2). 5. The degree of mandibular opening may vary somewhat from cycle to cycle but the variation in cycle duration throughout a sequence is restricted to a fairly narrow range (Table 1). There is therefore considerable variation in the velocity of mandibular closing from cycle to cycle (Fig. 3). 6. The mandibles are capable of some independent movement but are invariably bilaterally coupled during rhythmic biting (Fig. 4). 7. Electromyograms from the main mandibular muscles (Figs. 1B, 5) were analysed and a computer-aided analysis (Fig. 7) used to determine the mean intra-cyclic structure. 8. Mean-square reconstructions of the cycle structure were made for cycle durations throughout the normal range (Fig. 8) and histograms illustrating the amount of variation around these mean values constructed (Fig. 9). 9. The nature of the system as revealed by the analysis and its position relative to other systems which have been studied is discussed. A model of its sensory and motor interaction is proposed.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00620498
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  • 9
    Electronic Resource
    Electronic Resource
    Mandibular movements and their conrol inHomarus gammarus (1976)
    Springer
    Journal of comparative physiology 106 (1976), S. 207-221 
    Details
    ISSN: 1432-1351
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Notes: Summary 1. Electromyograms were recorded from the major muscles responsible for the mandibular opening and closing movements in the lobsterHomarus gammarus. Concomitant mandibular movements were also monitored. 2. Animals were fed a standard substrate (Nephrops leg) to obtain standard responses. They were then fed an incompressible substrate (metal tube) and an elastic substrate (rubber rod) for comparisons of feeding behaviour, mandibular movement and muscle activity. 3. In comparison with the standard substrate the incompressible substrate caused an increase in bite frequency (Fig. 2 A, B) with closer muscle activity occupying a reduced fraction of the cycle. The overall changes in cycle structure could not be explained in terms of the shorter cycle alone (Fig. 4 A, B). There was a marked and sudden increase in closer muscle activity when the mandibles engaged the incompressible substrate (Fig. 2C). The intra-cycle relationships became very strong with significantly less variation around values (Fig. 5A, B). 4. In comparison with the standard substrate the elastic substrate caused the animal to reduce its rate of biting with sustained closer muscle activity occupying almost all the prolonged cycle (Fig. 6 A, B). The overall changes in cycle structure could not be explained in terms of the longer cycle alone (Fig. 8 A, B). The increase in closer muscle activity upon engagement of the substrate was not markedly different from the standard case but the termination of the closer activity was altered so that the level of activity fluctuated widely before tailing off (Fig. 6C). The intra-cycle relationships became weaker with more variation around modal values (Fig. 9 A, B). 5. The results were considered in context with related findings and a mechanism hypothesised in which a basic centrally generated biting pattern is considerably modified by both position (proprioceptive) and tension (load) sensitive afference from the mandibles.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00620499
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  • 10
    Electronic Resource
    Electronic Resource
    Mandibular movements and their control inHomarus gammarus (1976)
    Springer
    Journal of comparative physiology 106 (1976), S. 177-191 
    Details
    ISSN: 1432-1351
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Notes: Summary The skeletal morphology, musculature and innervation of the mandible of the common lobster,Homarus gammarus, are described as a basis for the functional study included in the two subsequent papers. Although the mandible articulation takes the form of a hinge with movement in a single plane, the musculature of the mandible is complex. The main muscles are similar to those ofAstacus (Schmidt, 1915) but some smaller, previously undescribed muscles were found. As forAstacus (Keim, 1915) andCambarus (Chaudonneret, 1956) the mandibular muscles are innervated by two nerve trunks, the inner and outer mandibular nerves. However, differences occur in the branching of these nerves and the muscles which they innervate. A group of sensory cells associated with the posterior stomach nerve (omn 4) are described. It is suggested that these form a proprioceptive organ associated with the hypodermis overlying the lateral mandible articulation. An interesting group of neurones lying at the confluence of nerve branches from omn 2, omn 3, and omn 4 is described.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00620497
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