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  • 1
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    Physical controls on the dynamics of phytoplankton biomass, carbon flux and trophic interactions in the NorthAtlantic during the transition from regimes of winter convection to spring stratification - Cruise No.M87/1 – March 19 – May 02, 2012 – Lisbon (Portugal) – Reykjavik (Iceland). (2014)
    DFG-Senatskommission für Ozeanographie
    In:  EPIC3METEOR-Berichte,M87/1, DFG-Senatskommission für Ozeanographie, M87/1, 56 p.
    Details
    Publication Date: 2016-12-15
    Repository Name: EPIC Alfred Wegener Institut
    Type: Miscellaneous , notRev
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    PAPER (OA)
  • 2
    Electronic Resource
    Electronic Resource
    Determination of Helium in the Parts-per-Million Range (1957)
    s.l. : American Chemical Society
    Analytical chemistry 29 (1957), S. 1720-1720 
    Details
    ISSN: 1520-6882
    Source: ACS Legacy Archives
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1021/ac60131a606
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    Paper (German National Licenses)
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  • 3
    Electronic Resource
    Electronic Resource
    The Reduction of Lead Sulphate (1916)
    s.l. : American Chemical Society
    The @journal of physical chemistry 〈Washington, DC〉 20 (1916), S. 151-163 
    Details
    Source: ACS Legacy Archives
    Topics: Chemistry and Pharmacology , Physics
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1021/j150164a004
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    Paper (German National Licenses)
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  • 4
    Electronic Resource
    Electronic Resource
    The Regeneration of Sulphated Storage Cells (1916)
    s.l. : American Chemical Society
    The @journal of physical chemistry 〈Washington, DC〉 20 (1916), S. 164-167 
    Details
    Source: ACS Legacy Archives
    Topics: Chemistry and Pharmacology , Physics
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1021/j150164a005
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    Paper (German National Licenses)
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  • 5
    Electronic Resource
    Electronic Resource
    Excimer laser ablation of polyimide-doped poly(tetrafluoroethylene) at 248 and 308 nm (1993)
    [S.l.] : American Institute of Physics (AIP)
    Journal of Applied Physics 74 (1993), S. 5972-5980 
    Details
    ISSN: 1089-7550
    Source: AIP Digital Archive
    Topics: Physics
    Notes: Experimental data on the 248 and 308 nm wavelength excimer laser ablation at poly(tetrafluoroethylene) doped with polymide (PI) are reported for a range of fluences and dopant concentrations. Threshold fluences were determined and a correlation was obtained between the dopant concentration and the threshold fluence. The threshold fluences and the limiting etch rates at high fluences decreased with increasing dopant concentration, and there is a minimum dopant concentration below which there is no ablation at both of the wavelengths. The side wall taper of the ablated holes increased with increasing dopant concentration. At subthreshold fluences, the polymer surface was modified with selective removal of PI from the polymer blend. The etch rates have been modeled using a two parameter thermal model to describe the etching process. The parameters obtained by fitting the data are qualitatively correlated to the dopant concentration and the measured limiting etch rates.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.355210
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  • 6
    Electronic Resource
    Electronic Resource
    Simulation of ion transport through curved-solenoid macroparticle filters (1992)
    [S.l.] : American Institute of Physics (AIP)
    Journal of Applied Physics 72 (1992), S. 1740-1747 
    Details
    ISSN: 1089-7550
    Source: AIP Digital Archive
    Topics: Physics
    Notes: Ion transport through curved-solenoid macroparticle filters is investigated using a parabolic potential model of the electric field. Consideration of the ion equations of motion shows that the filter efficiency will increase with the relative radius of curvature of the solenoid and decrease with the relative length of the input region. If the magnetic field is constant in the input region, transport efficiencies of up to 100% are predicted. We argue that the observed effect of axial magnetic field on the angular distribution of ions emitted from the cathode spot can be explained by electric fields changing ion trajectories after emission, rather than a change in spot behavior. Detailed calculations give the energy and angular distributions with which the ions exit the filter. Focusing effects are observed and seen to affect the ion transport−particularly when the ions are not emitted on the filter axis.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.351697
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  • 7
    Electronic Resource
    Electronic Resource
    Ionic Composition of Cisternal CSF in Acute Respiratory Acidosis: Lack of Effect of Large Dose Bumetanide (1993)
    Oxford, UK : Blackwell Publishing Ltd
    Journal of neurochemistry 61 (1993), S. 0 
    Details
    ISSN: 1471-4159
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Medicine
    Notes: Abstract: Sodium/chloride cotransport carrier is known to be involved in transepithelial fluid absorption and secretion in various tissues. Recent studies indicate that Na,K,2CI cotransport carrier also exists in the choroid plexus cells and inhibition of the carrier alters ionic composition of the choroidal tissue. In this study, we report the effects of large dose intravenous bumetanide, a potent inhibitor of Na,K,2CI carrier, on cisternal CSF ionic composition in acute respiratory acidosis in pentobarbital-anesthetized mechanically ventilated dogs. Renal pedicles were ligated to prevent bumetanide-induced diuresis. The experirnental group (Group II, n = 7) received 50 mg/kg of bumetanide intravenously and Group I (the control group, n = 7) received the vehicle. Analysis of serum and choroidal plexus tissue revealed bumetanide concentration of ∼10−-5 mol/L in Group II. During 5 h of acute respiratory acidosis in both groups, the mean Paco2 increased ∼25 mm Hg, with comparable changes in CSF Pco2. In both groups, CSF [HCO3−] and [H+] increased ∼3 mEq/L and 20 nEq/L, respectively. Furthermore, changes in CSF [Na+], [K+], [Ca2+], [Mg2+], [CI−], and [Na+-CI−] were also similar and were not significantly different from each other. These data show that bumetanide, at the dose that inhibits NaCl cotransport carrier, does not significantly affect ionic composition of cisternal CSF.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1471-4159.1993.tb13648.x
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  • 8
    Electronic Resource
    Electronic Resource
    Activation of Protein Kinase C by the Capsaicin Analogue Resiniferatoxin in Sensory Neurones (1995)
    Oxford, UK : Blackwell Science Ltd
    Journal of neurochemistry 65 (1995), S. 0 
    Details
    ISSN: 1471-4159
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Medicine
    Notes: Abstract: Resiniferatoxin and capsaicin are sensory neurone-specific excitotoxins that operate a common cation channel in nociceptors. Resiniferatoxin is structurally similar to capsaicin and to phorbol esters. Specific [3H]-resiniferatoxin binding, which was detected in the membrane (KD value 1.8 ± 0.2 nM) but not cytosolic fraction of rat dorsal root ganglia, could not be displaced by phorbol 12,13-dibutyrate. Conversely, resiniferatoxin did not displace [3H]phorbol 12,13-dibutyrate binding in either the cytosolic or membrane fraction. Resiniferatoxin and capsaicin both caused translocation of protein kinase C in dorsal root ganglion neurones (EC50 value 18 ± 3 nM). This translocation was greatly reduced but not abolished, in the absence of external Ca2+, suggesting that it was secondary to Ca2+ entry. Resiniferatoxin also caused direct activation of a Ca2+- and lipid-dependent kinase (or kinases) in the cytosolic fraction of dorsal root ganglia, at concentrations (100 nM to 10 µM) higher than required for displacement of [3H]resiniferatoxin binding or translocation of protein kinase C. Capsaicin (up to 10 µM) was unable to mimic this effect. These data imply that although resiniferatoxin-induced translocation of protein kinase C in dorsal root ganglion neurones was mainly indirect, it also caused direct activation of a protein kinase C-like kinase in these cells.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1046/j.1471-4159.1995.65031309.x
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  • 9
    Electronic Resource
    Electronic Resource
    A Comparison of Distribution Between Simultaneously or Sequentially Delivered Antegrade/Retrograde Blood Cardioplegia (1996)
    Oxford, UK : Blackwell Publishing Ltd
    Journal of cardiac surgery 11 (1996), S. 0 
    Details
    ISSN: 1540-8191
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Medicine
    Notes: Abstract Commercially available cardioplegia delivery systems now allow for antegrade (aortic root, coronary ostia, saphenous vein graft) perfusion to occur either sequentially or simultaneous with retrograde (coronary sinus) perfusion. This study was designed to compare the total flow and local distribution of sequential versus simultaneous antegrade/retrograde cardioplegia delivery. Methods: Explanted human hearts diagnosed with idiopathic cardiomyopathy underwent a cold cardioplegic arrest and bicaval cardiectomy. Thirty-seven degree centigrade blood cardioplegia containing colored microspheres was then delivered antegrade (red color) at a pressure of 80 mmHg or retrograde (blue color) at a pressure of 40 mmHg. In the sequential group (n = 6), cardioplegia was delivered antegrade and then retrograde for 2 minutes, respectively. For the simultaneous group (n = 6), cardioplegia was delivered both antegrade and retrograde for 2 minutes. The ventricular myocardium was then sampled at 12 representative sites to determine regional cardioplegic flow. Results: Mean total cardioplegia delivery/minute was 0.69 ± 0.62 mL/g per minute for sequential cardioplegia, and 0.46 ± 0.19 mL/g per minute for simultaneous cardioplegia (p 〉 0.05, NS). At the 12 ventricular sites sampled, mean regional cardioplegic flow (mL/g per min) was in general slightly greater for sequential delivery. However, this was not statistically significant (p 〉 0.05, NS). Conclusion: The data suggest that there may be a slight advantage in total cardioplegia delivery and regional cardioplegia delivery when using sequential rather than simultaneous cardioplegia delivery. However, this difference was not statistically significant and is likely not of clinical significance. Therefore, we would recommend using either sequential or simultaneous antegrade/retrograde cardioplegia based upon whichever technique facilitates the conduct of the individual operation.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1540-8191.1996.tb00023.x
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  • 10
    Electronic Resource
    Electronic Resource
    Temporary Mechanical Support with the BVS 5000 Assist Device During Treatment of Acute Myocarditis (1997)
    Oxford, UK : Blackwell Publishing Ltd
    Journal of cardiac surgery 12 (1997), S. 0 
    Details
    ISSN: 1540-8191
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Medicine
    Notes: Abstract Background: Ventricular support with the BVS 5000 (Abiomed) has been used as temporary circulatory assist for the failing heart. Our purpose is to summarize four cases illustrating the role of mechanical unloading in acute myocarditis. Methods: Four patients aged 16- to 33-year old presented with congestive heart failure 4 to 20 days after a flu-like syndrome. All patients were in severe cardiogenic shock ± renal and liver dysfunction. Ejection fraction ranged from 5% to 26%. Indications for ventricular assist were failure of maximal medical treatment with 〈inlineGraphic alt="geqslant R: gt-or-equal, slanted" extraInfo="nonStandardEntity" href="urn:x-wiley:08860440:JOCS55:ges" location="ges.gif"/〉 two inotropes ± intra-aortic balloon pump. Myocardial biopsy revealed acute myocarditis in three patients and severe edema in one despite a characteristic clinical course. Two patients received immunotherapy with OKT3. Biventricular assist was used in three patients and left ventricular assist only was used in one. Mean support time was 8.3 days (7 to 11). Results: All patients had recovery of myocardial function and were discharged from the hospital in good condition. Conclusion: The BVS 5000 device provides a safe, simple, and effective method to support the circulation during acute myocarditis. We hypothesize that this may facilitate myocardial recovery by decompressing the distended ventricle. Ventricular assist devices should be used early in the presence of hemodynamic deterioration on maximal medical therapy.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1540-8191.1997.tb00091.x
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