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  • 1990-1994  (6)
  • 1980-1984  (4)
  • 1
    Electronic Resource
    Electronic Resource
    Expression of GAP-43 mRNA in Mouse Spinal Cord Following Unilateral Peripheral Nerve Damage: is There a Contralateral Effect? (1993)
    Oxford, UK : Blackwell Publishing Ltd
    European journal of neuroscience 5 (1993), S. 0 
    Details
    ISSN: 1460-9568
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Medicine
    Notes: Two new oligonucleotide anti-sense probes and their corresponding sense probes specific for mouse GAP-43 mRNA were synthesized and end-labelled with digoxygenin. They were used to localize GAP-43 mRNA in the spinal cords of normal mice and in mice 3 and 7 days following unilateral sciatic nerve cut. GAP-43 mRNA was found to be expressed at low levels in motor and other neurons of the normal spinal cords. As expected from other studies, up-regulation occurred in the cell bodies of axotomized motor neurons but, in addition, up-regulation was also observed in the cell bodies of intact motor neurons contralateral to the lesion. Densitometer measurements showed that the up-regulation of GAP-43 mRNA was less in the intact, contralateral motor neuron cell bodies than in the axotomized motor neuron cell bodies and furthermore was transient, being higher at 3 days than at 7 days following axotomy. Both anti-sense probes gave the same result, although differences in cellular localization were observed, and the two sense probes were negative. Probe binding was abolished by pretreatment of the sections with ribonuclease and hybridization was carried out under different conditions of stringency in order to ascertain whether the contralateral expression of GAP-43 mRNA was a true reflection of its distribution in vivo. There is conflicting evidence on the presence or absence of contralateral effects following unilateral peripheral nerve injury in the literature, and it is suggested that these differences can be accounted for by the methodology and type of probe used.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1460-9568.1993.tb00234.x
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  • 2
    Electronic Resource
    Electronic Resource
    Book reviews (1992)
    Springer
    Journal of applied electrochemistry 22 (1992), S. 893-897 
    Details
    ISSN: 1572-8838
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology , Electrical Engineering, Measurement and Control Technology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01023736
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    Paper (German National Licenses)
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  • 3
    Electronic Resource
    Electronic Resource
    Postnatal development of the adult pattern of motor axon distribution in rat muscle (1983)
    [s.l.] : Nature Publishing Group
    Nature 304 (1983), S. 741-742 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] Experiments were carried out on the sheet-like gluteus muscle of neonatal rats aged 0-1 days and 13-17 days. The muscle (Fig. 1) varies between 12 and 25 fibres thick and is innervated by about 20 motor axons. It arises medially from the iliac crest and inserts into the femur and fascia of the ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/304741a0
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  • 4
    Electronic Resource
    Electronic Resource
    Micellisation and gelation of block-copoly(oxyethylene/oxybutylene/oxyethylene) E58 B17 E58 (1992)
    Springer
    Colloid & polymer science 270 (1992), S. 1094-1105 
    Details
    ISSN: 1435-1536
    Keywords: Oxybutylene/oxyethylene triblockcopolymer ; micellisation ; gelation properties
    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 A triblock-copoly(oxybutylene/oxyethylene), denoted E58 B17 E58 (80 wt-% E), was prepared by sequential anionic copolymerisation and its micellar and gelation properties in aqueous solution were determined. The oxybutylene/oxyethylene copolymer had the advantage over comparable oxypropylene/oxyethylene copolymers of greater uniformity of composition and chain length. The methods generally used were surface tension, light scattering intensity, photon correlation spectroscopy, together with observation of gelation. Measurements were made at 30°, 40° and 55° C over a full concentration range from dilute solution into the gel (〉200 g dm−3) and at specified concentrations, including the gel, over the temperature range from 10° to 70° C. The lower and upper temperature boundaries of the gel region were identified, and the occurrence of syneresis was noted. The properties investigated and discussed include critical micelle and gel concentrations, micellar weights and sizes, and structures and mobilities in the gel.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00652874
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  • 5
    Electronic Resource
    Electronic Resource
    Measurement of the transverse momentum distributions ofW andZ bosons at the CERN $$\bar pp$$ collider (1990)
    Springer
    The European physical journal 47 (1990), S. 523-531 
    Details
    ISSN: 1434-6052
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract The transverse momentum distributions ofW andZ bosons produced in $$\bar pp$$ collisions at $$\sqrt s = 630 GeV$$ are examined. Comparisons are made with QCD predictions, and good agreement is found. The fraction ofW bosons produced withp T 〉25 GeV is found to be 3.8±0.6(stat) −1.3 +0.9 (syst)%.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01552316
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  • 6
    Electronic Resource
    Electronic Resource
    Cation interdiffusion between thick film of YBa2Cu3O7-δ and ceramic substrate (1991)
    Springer
    Journal of materials science 26 (1991), S. 3057-3061 
    Details
    ISSN: 1573-4803
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Notes: Abstract Thick films of superconducting oxides, YBa2Cu3O7-δ, were successfully made by conventional screen-printing technology on Al2O3, MgO, and ZrO2 substrates. Interdiffusion between the superconductive film and substrate was investigated using analytical electron microscopy. The results indicate that MgO and ZrO2 are superior to Al2O3 for substrate materials.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01124842
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  • 7
    Electronic Resource
    Electronic Resource
    Uphill diffusion in YBa2Cu3O7-δ thick film on Al2O3 substrate (1990)
    Springer
    Journal of materials science 9 (1990), S. 669-671 
    Details
    ISSN: 1573-4811
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00721798
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  • 8
    Electronic Resource
    Electronic Resource
    Oxygen uptake and the potentiating effects of increased hemolymph lactate on oxygen transport during exercise in the blue crab,Callinectes sapidus (1982)
    Springer
    Journal of comparative physiology 148 (1982), S. 111-121 
    Details
    ISSN: 1432-136X
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Notes: Summary At the onset of moderate swimming activity,Callinectes sapidus rapidly increased branchial ventilation, heart rate, and oxygen uptake, reaching steady state values in 2–3 min, with a half-time of 30 sec. Although O2 extraction efficiency decreased slightly (50% to 43%) upon reaching steady state, O2 uptake was increased 2.6 fold over resting (routine) levels. HemolymphP O 2 did not change during sustained (30–60 min) exercise, but a marked decrease in pH (7.60 to 7.10), associated with a 14-fold increase in hemolymph lactate concentration, caused decreases in both pre-and postbranchial O2 content due to a large hemocyanin Bohr shift. The effect of the Bohr shift on O2 binding, however, was minimized by an increase in hemocyanin O2 affinity induced by lactate ions; the influence of lactate on hemocyaninP 50 was shown to be the same in vivo and in vitro. As a result of the interaction between the Bohr and lactate effects, only slight increases were observed in the a-v O2 difference (13%) and the quantitative role of hemocyanin in oxygen transport (11%) during exercise. The increase in O2 delivery was therefore attributed primarily to a 2.3 fold increase in cardiac output (Fick estimate), resulting from increases in both heart rate (1.61 X) and stroke volume (1.42X). During exercise hemocyanin remained 21% oxygenated upon leaving the tissues, thus maintaining a substantial ‘venous O2 reserve’ which could be utilized to fuel more strenuous levels of exercise at least partly by aerobic pathways. The high hemolymph lactate levels, however, indicate that anaerobic metabolism makes a significant contribution to energy production even during moderate exercise. These results are similar to the respiratory and circulatory responses reported for other decapod crustaceans and fish during mild exercise.C. sapidus, however, appears to be highly resistant to fatigue, which correlates with its welldeveloped locomotor capabilities.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00688894
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  • 9
    Electronic Resource
    Electronic Resource
    Low-frequency raman scattering from methylene-oxyethylene-methylene triblock oligomers (1983)
    New York : Wiley-Blackwell
    Journal of Polymer Science: Polymer Physics Edition 21 (1983), S. 1501-1511 
    Details
    ISSN: 0098-1273
    Keywords: Physics ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Physics
    Notes: Low-frequency Raman spectra are reported for monodisperse methylene-oxyethylene-methylene triblock oligomers. Assignments are made to the longitudinal acoustical modes (LAMs) of the oxyethylene block and the methylene block. The results for LAM-1 can be modeled by the vibrations of rods with perturbing forces and masses. The results for LAM-3 are not so readily modeled.
    Additional Material: 9 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/pol.1983.180210817
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  • 10
    Electronic Resource
    Electronic Resource
    Raman scattering from the longitudinal acoustic mode of oligo-oxyethylene (1983)
    New York : Wiley-Blackwell
    Journal of Polymer Science: Polymer Physics Edition 21 (1983), S. 919-927 
    Details
    ISSN: 0098-1273
    Keywords: Physics ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Physics
    Notes: Low-frequency Raman spectra are reported for monodisperse oligo-oxyethylenes with hydroxy and alkoxy end groups. Assignments are made to the longitudinal acoustic modes. The results are modeled by a rod with a longitudinal modulus E ≥ 2.2 × 1010 N m-2 and perturbing forces as large as (alkoxy-ended oligomers) or larger than (hydroxy-ended oligomers) those suggested for the n-alkanes.
    Additional Material: 6 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/pol.1983.180210608
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