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  • 1
    ISSN: 1279-8517
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Conclusion Cette étude a montré la communication possible des liquides entre les régions paravertébrales thoracique et lombaire à travers le fascia endothoracique. Les observations de Lönnqvist à propos de la limite caudale de l'anesthésie paravertébrale thoracique semble pouvoir être remises en cause bien que n'ayons pas examiné de cadavre d'enfant [11]. Il y a des malentendus en ce qui concerne la diffusion du liquide dans le fascia endothoracique. Leur correction est importante pour l'application clinique ultérieure de l'anesthésie paravertébrale.
    Type of Medium: Electronic Resource
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  • 2
    ISSN: 1279-8517
    Keywords: Lumbar plexus ; Intercostal nerves ; Anesthesia regional ; Paravertebral block
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract Summary An injection of a local anesthetics in the paravertebral region produces an analgesic field on the same side of the body, a paravertebral block. One point in question about this block is whether the local anesthetic spreads from the thoracic to the lumbar level of the paravertebral region. The purpose of this study was to find how the anesthetic fluid traveled to the lumbar paravertebral region, if at all. Twelve cadavers were used in this study. 15 ml of crimson dye was injected into the paravertebral region at the 11th thoracic level. The viscerae were removed so that we could examine the dye spread. While the crimson dye spread in the endothoracic fascia posterior to the parietal pleura, it also spread downward in the fascia mostly along the splanchnic nerves. At the upper surface of the diaphragm the dye spread laterally in the fascia, and entered the abdominal cavity through the medial and lateral arcuate ligaments. In the abdominal cavity, the dye was found to have spread so widely in the transversalis fascia that the subcostal, iliohypogastric, ilioinguinal, genitofemoral, lateral femoral cutaneous and femoral nerves were involved. We concluded that the dye in the thoracic paravertebral region can enter the abdominal cavity through the medial and lateral arcuate ligaments. This study explained possible fluid communication between the thoracic and lumbar paravertebral regions and confirmed our former clinical observations. The result is important for the future clinical application of paravertebral anesthesia.
    Type of Medium: Electronic Resource
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  • 3
    ISSN: 1279-8517
    Keywords: Lumbar plexus ; Intercostal nerves ; Anesthesia regional ; Paravertebral block
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Description / Table of Contents: Résumé L'injection d'un anesthésique local dans la région paravertébrales entraîne une analgésie unilatérale localisée (bloc paravertébral). On pouvait se demander si l'anesthésique local diffusait du niveau thoracique au niveau lombaire de la région paravertébrale. Le but de cette étude était de définir comment le liquide anesthésique gagnait la région paravertébrale lombaire, s'il le faisait. 12 cadavres ont été utilisés dans cette étude. 15 mm de colorant rouge ont été injectés dans la région paravertébrale des cadavres au niveau de la 11ème vertèbre thoracique. Les viscères ont ensuite été enlevés pour permettre l'examen de la diffusion du colorant. Le colorant diffusait dans le fascia endothoracique en arrière de la plèvre pariétale, puis vers le bas à l'intérieur du fascia, principalement le long des nerfs splanchniques. A la face supérieure du diaphragme, il diffusait latéralement dans le fascia, et pénétrait dans la cavité abdominale au-dessous des ligaments arqués médial et latéral. Dans la cavité abdominale, le colorant diffusait largement dans le fascia transversalis de telle sorte qu'il atteignait les nerfs subcostal, ilio-hypogastrique, ilio-inguinal, génito-fémoral, cutané latéral de la cuisse, et fémoral. Nous en avons conclu que le colorant pouvait passer de la région paravertébrale thoracique dans la cavité abdominale au-dessous des ligaments arqués médial et latéral. Cette étude montre la communication possible des liquides entre les régions paravertébrales thoracique et lombaire, et corrobore nos observations cliniques préalables. Le résultat en est important pour l'utilisation clinique ultérieure des blocs paravertébraux.
    Notes: Summary An injection of a local anesthetics in the paravertebral region produces an analgesic field on the same side of the body, a paravertebral block. One point in question about this block is whether the local anesthetic spreads from the thoracic to the lumbar level of the paravertebral region. The purpose of this study was to find how the anesthetic fluid traveled to the lumbar paravertebral region, if at all. Twelve cadavers were used in this study. 15 ml of crimson dye was injected into the paravertebral region at the 11th thoracic level. The viscerae were removed so that we could examine the dye spread. While the crimson dye spread in the endothoracic fascia posterior to the parietal pleura, it also spread downward in the fascia mostly along the splanchnic nerves. At the upper surface of the diaphragm the dye spread laterally in the fascia, and entered the abdominal cavity through the medial and lateral arcuate ligaments. In the abdominal cavity, the dye was found to have spread so widely in the transversalis fascia that the subcostal, iliohypogastric, ilioinguinal, genitofemoral, lateral femoral cutaneous and femoral nerves were involved. We concluded that the dye in the thoracic paravertebral region can enter the abdominal cavity through the medial and lateral arcuate ligaments. This study explained possible fluid communication between the thoracic and lumbar paravertebral regions and confirmed our former clinical observations. The result is important for the future clinical application of paravertebral anesthesia.
    Type of Medium: Electronic Resource
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  • 4
    Electronic Resource
    Electronic Resource
    Amsterdam : Elsevier
    Spectrochimica Acta Part B: Atomic Spectroscopy 45 (1990), S. 731-752 
    ISSN: 0584-8547
    Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics: Chemistry and Pharmacology , Physics
    Type of Medium: Electronic Resource
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  • 5
    Electronic Resource
    Electronic Resource
    [S.l.] : American Institute of Physics (AIP)
    Review of Scientific Instruments 66 (1995), S. 5252-5256 
    ISSN: 1089-7623
    Source: AIP Digital Archive
    Topics: Physics , Electrical Engineering, Measurement and Control Technology
    Notes: For plasma-assisted processing of future semiconductor devices, a new compact electron cyclotron resonance (ECR) plasma source has been specifically designed. The source is novel in that the magnets required for the production of ECR plasma are movable even in vacuum, and in situ monitoring of the discharge zone is also possible. Typical plasma characteristics were evaluated for nitrogen gas using Langmuir probe diagnostics and ion energy analysis. The measured plasma parameters include electron densities in excess of 1010 cm−3 and low ion energies (〈30 eV) with narrow distributions, which can be easily controlled by varying the discharge pressure and downstream position. Moreover, changing the aperture size of the discharge cavity enables one to control the relative ratio of the ionic and atomic species in the plasma. In determining plasma stability, changes in plasma parameters after plasma start-up were investigated. The results show a correlation between changes in the plasma potential and the total plasma optical emission. In situ monitoring of the total plasma emission is suggested as a simple means of providing valuable information in real time about physical plasma parameter changes during processing. © 1995 American Institute of Physics.
    Type of Medium: Electronic Resource
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  • 6
    Electronic Resource
    Electronic Resource
    Amsterdam : Elsevier
    Journal of Crystal Growth 93 (1988), S. 265-269 
    ISSN: 0022-0248
    Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics: Chemistry and Pharmacology , Geosciences , Physics
    Type of Medium: Electronic Resource
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  • 7
    Electronic Resource
    Electronic Resource
    Amsterdam : Elsevier
    Journal of Crystal Growth 95 (1989), S. 142-144 
    ISSN: 0022-0248
    Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics: Chemistry and Pharmacology , Geosciences , Physics
    Type of Medium: Electronic Resource
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  • 8
    Electronic Resource
    Electronic Resource
    Springer
    Journal of materials science 19 (1984), S. 2795-2804 
    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 Microstructures in a commercial Nb-Ti alloy heat-treated or repeatedly aged and cold worked have been investigated by transmission electron microscopy. In the aged samples after solution treatment,ω-phase forms at ageing temperatures below 673 K andα-phase precipitates at 773 K. Cold work after solution treatment or heavy cold work without prior solution treatment results in accelerated precipitation ofω-phase on ageing at 623 K and ofα-phase on ageing at 773 K, while it givesα-precipitation instead ofω on ageing at 673 K. Repeated ageing and cold work make the microstructures very fine. The refinement is due to formation of dislocation cell structures and subgrains and precipitation ofω- andα-phases.
    Type of Medium: Electronic Resource
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