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  • 1
    Electronic Resource
    Electronic Resource
    Decay properties of the new proton-rich nucleus104Sn: Mass determinations beyond the proton drip line (1985)
    Springer
    The European physical journal 321 (1985), S. 599-603 
    Details
    ISSN: 1434-601X
    Keywords: 23.40.Hc ; 21.10.Dr ; 29.30.Kv
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract The new proton-rich nucleus104Sn was produced in a50Cr(58Ni, 2p2n)104Sn reaction. Its half-life was measured to be 21±1s. From a newly established partial decay scheme, aQ EC value of 4,000 −300 +650 keV was estimated. The resulting mass excess value for104Sn, combined with decay energies for α and proton emission, leads to mass excess values for the nuclei108Te,109I,112Xe, and113Cs. These mass values are compared to predictions of mass formulae.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01432436
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  • 2
    Electronic Resource
    Electronic Resource
    Haemodynamic changes in neurogenic pulmonary oedema: Effect of dobutamine (1996)
    Springer
    Intensive care medicine 22 (1996), S. 672-676 
    Details
    ISSN: 1432-1238
    Keywords: Neurogenic pulmonary oedema ; Haemodynamics ; Inotropic therapy
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract The haemodynamic and gas exchange abnormalities occurring in neurogenic pulmonary oedema (NPO) were examined retrospectively in 20 patients admitted to the Intensive Therapy Unit (ITU) over a 45-month period (February 1992 to November 1995). In 12 patients, where vasoactive therapy with dobutamine was employed, its effect on haemodynamics was examined. Cardiac index (CI median 2.2 l min−1 m−2) and left ventricular stroke work index (LVSWI 20 g.m.m−2) were markedly depressed, while pulmonary artery wedge pressure (PAWP 17 mmHg), mean pulmonary artery pressure (MPAP 30.5 mmHg), systemic vascular resistance index (SVRI 2852 dyne.s.cm−5.m2) and pulmonary vascular resistance index (PVRI 393 dyne.s.cm−5.m2) were substantially elevated above normal values. Mean arterial pressure (MAP 82.5 mmHg) and heart rate (HR 102 bpm) were within normal limits. The poor oxygenation is indicated by a median PaO2/fiO2 ratio of 18.0 kPa. Patients treated with dobutamine showed significant increases in CI and LVSWI and significant falls in SVRI and PAWP at 2 and 6 h after institution of therapy, and there was a significant rise in PaO2/fiO2 ratio to 27.8 kPa at 6 h. NPO was generally associated with severe depression of myocardial function and elevation of pulmonary vascular pressures. This dysfunction was readily reversed by dobutamine.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01709745
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  • 3
    Electronic Resource
    Electronic Resource
    Haemodynamic changes in neurogenic pulmonary oedema: effect of dobutamine (1996)
    Springer
    Intensive care medicine 22 (1996), S. 672-676 
    Details
    ISSN: 1432-1238
    Keywords: Key words Neurogenic pulmonary oedema ; Haemodynamics ; Inotropic therapy
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract  The haemodynamic and gas exchange abnormalities occurring in neurogenic pulmonary oedema (NPO) were examined retrospectively in 20 patients admitted to the Intensive Therapy Unit (ITU) over a 45-month period (February 1992 to November 1995). In 12 patients, where vasoactive therapy with dobutamine was employed, its effect on haemodynamics was examined. Cardiac index (CI median 2.2 l min−1 m−2) and left ventricular stroke work index (LVSWI 20 g.m.m−2) were markedly depressed, while pulmonary artery wedge pressure (PAWP 17 mmHg), mean pulmonary artery pressure (MPAP 30.5 mmHg), systemic vascular resistance index (SVRI 2852 dyne.s.cm−5.m2) and pulmonary vascular resistance index (PVRI 393 dyne.s.cm−5.m2) were substantially elevated above normal values. Mean arterial pressure (MAP 82.5 mmHg) and heart rate (HR 102 bpm) were within normal limits. The poor oxygenation is indicated by a median PaO2/fiO2 ratio of 18.0 kPa. Patients treated with dobutamine showed significant increases in CI and LVSWI and significant falls in SVRI and PAWP at 2 and 6 h after institution of therapy, and there was a significant rise in PaO2/fiO2 ratio to 27.8 kPa at 6 h. NPO was generally associated with severe depression of myocardial function and elevation of pulmonary vascular pressures. This dysfunction was readily reversed by dobutamine.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01709745
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  • 4
    Electronic Resource
    Electronic Resource
    Adrenaline in treatment of septic shock: Effects on haemodynamics and oxygen transport (1991)
    Springer
    Intensive care medicine 17 (1991), S. 36-39 
    Details
    ISSN: 1432-1238
    Keywords: Adrenaline ; Septic shock ; Oxygen transport
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract The effects of adrenaline on haemodynamics and oxygen transport were studied in 13 patients with septic shock persisting after optimal fluid loading. adrenaline was administered by intravenous infusion at an increasing dose until no further benefit was seen. There were significant increases in mean arterial pressure, cardiac index, left ventricular stroke work index and oxygen delivery index. There was no significant change in oxygen consumption although the trend was towards an increase. There was a significant reduction in oxygen extraction ratio, but no change in shunt fraction. Adrenaline would appear to have beneficial haemodynamic effects in septic shock.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01708407
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  • 5
    Electronic Resource
    Electronic Resource
    The haemodynamic effects of intermittent haemofiltration in critically ill patients (1991)
    Springer
    Intensive care medicine 17 (1991), S. 346-349 
    Details
    ISSN: 1432-1238
    Keywords: Acute renal failure ; Haemofiltration ; Oxygen transport
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract The haemodynamic effects of intermittent high volume venovenous haemofiltration were studied in 13 critically ill patients. The mean negative fluid balance during filtration was 1.2l and the mean duration of treatment 3 h 40 min. The cardiac index fell initially (4.5±0.2 to 3.8±0.2l/min/m2;p〈0.05) but then remained stable throughout treatment before returning to baseline at the end of haemofiltration. The mean arterial pressure was unchanged with an increase in the systemic vascular resistance (651±33 to 765±65 dyne·s/cm5;p〈0.05) suggesting that vascular responsiveness is maintained during haemofiltration.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01716194
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  • 6
    Electronic Resource
    Electronic Resource
    Gamow-Teller beta decay of the very neutron-deficientN=50 nuclide98Cd (1992)
    Springer
    The European physical journal 342 (1992), S. 43-51 
    Details
    ISSN: 1434-601X
    Keywords: 23.40.Hc ; 21.10.Dr ; 21.10.Pc
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract For the first time, detailed decay-spectroscopic investigations were performed for the very neutron-deficientN=50 nuclide98Cd. The98Cd activity was produced in spallation reactions between 600 MeV protons and a natural tin target, yielding a98Cd beam intensity of 10 to 60 atoms/s at the collector of the ISOLDE massseparator. By means ofγ-ray and conversion-electron spectroscopy, 19 transitions were found to follow the β+/EC decay98Cd→98Ag. The transitions at 61 and 107 keV were shown to beM1(+E2) andE2, respectively, and the98Cd half-life was measured as 9.2±0.3 s. TheQ EC value of98Cd is determined semiempirically and is compared to model predictions together with the measuredQ EC values of the neighbouring cadmium isotopes100,102Cd and theN=50 isotones92Mo,94Ru, and96Pd, taken from the literature. The newly established decay scheme of98Cd includes 9 excited states of98Ag. Four states at 1691, 1861, 2164, and 2544 keV are directly fed by 0+ → 1+ Gamow-Teller beta transitions with a summed strength of 3.5 −0.7 +0.8 . This value corresponds to 25±5% of the strength predicted for the GT transformation of a g9/2 proton (in98Cd) into a g7/2 neutron (in98Ag) by the extreme single-particle shell model. The GT-strength splitting and quenching, observed for98Cd, are compared with the corresponding data for lighter even-even N=50 isotones, and are discussed with reference to the predictions of more sophisticated nuclear models. We find that only in some cases it is possible to explain qualitatively the observed GT strength distribution and its total magnitude without renormalizing the free-neutron value of the axial-vector coupling constant.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01294487
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  • 7
    Electronic Resource
    Electronic Resource
    The Gamow-Teller beta decay of100Cd (1989)
    Springer
    The European physical journal 332 (1989), S. 275-284 
    Details
    ISSN: 1434-601X
    Keywords: 23.40.Hc ; 21.10.Dr ; 27.60.+j ; 29.30.Kv
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract Neutron-deficient isotopes of cadmium were produced in thep(600 MeV)+natSn spallation reaction. The ISOLDE facility provided mass-separated beams of these isotopes. The production yield was 103 to 104 atoms/s for100Cd and roughly two orders of magnitude less for98Cd. The properties of the100Cd→100Ag decay were studied in detail by X-ray,γ-ray and conversion electron spectroscopy. Forty nineγ-transitions were assigned to this decay, and all but five of them were placed in the decay scheme. The half-life was determined to be 49.1±0.5 s. TheQ EC value of 3890±70 keV was deduced from a comparison of experimental and theoreticalβ +/(EC+β + probability ratios. Seven 0+→1+ Gamow-Teller transitions with log ft values between 3.5 and 4.9 were identified. The total (summed) strength is about five times smaller than predicted by the shell model for the transformation of ag 9/2 proton into ag 7/2 neutron. The quenching of the Gamow-Teller strength and other questions of nuclear structure are discussed for the100Cd decay. The properties of98Cd are inferred by extrapolation of104,102,100Cd data, and some preliminary experimental results on98Cd decay are presented.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01295457
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  • 8
    Electronic Resource
    Electronic Resource
    The Gamow-Teller transitions in the96Pd→96Rh decay (1985)
    Springer
    The European physical journal 322 (1985), S. 263-270 
    Details
    ISSN: 1434-601X
    Keywords: 23.40.Hc ; 21.10.Dr ; 21.10.Pc ; 27.60.+j ; 29.30.Kv
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract Using the40Ca(4.2 MeV/u) +60Ni reaction and on-line mass separation, the decay properties of 46 96 Pd50 were reinvestigated. From a comparison of experimental and theoreticalβ +/(EC +β +) probability ratios, theQ EC value was deduced to be 3,450 ± 150 keV. The strength was determined for four 0+→1+ Gamow-Teller beta transitions and found to be quenched as compared to predictions of the single-particle shell model. For96Pd and94Ru the sources of this quenching are discussed.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01411890
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  • 9
    Electronic Resource
    Electronic Resource
    Q EC value and Gamow-Teller strength of the102CdEC/gb+ decay (1991)
    Springer
    The European physical journal 339 (1991), S. 355-361 
    Details
    ISSN: 1434-601X
    Keywords: 23.40.Hc ; 21.10.Dr ; 21.10.Pc
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract Within the framework of a systematic study of 0+→1+ Β-transitions in the100Sn region, the decay of the neutrondeficient isotope102Cd was investigated. This isotope was produced in16O+92Mo and58Ni+50Cr heavy-ion reactions and in proton-induced spallation ofnatSn, and mass-separated samples were prepared by means of the GSI and the ISOLDE on-line mass separators, respectively. Observations of X-rays,γ-rays, and conversion-electrons studies have led to an improved102Cd→102Ag decay scheme which includes six 0+→1+ Gamow-Teller transitions. The half-life of102Cd was redetermined with higher accuracy to be 345±8 s. Using a Si(Li)-BGO-Ge spectrometer, theΒ + endpoint energy of the main decay component was measured, yielding aQ EC value of 2587±8 keV. This very small uncertainty ofQ EC, combined with the improved knowledge of half-life and decay scheme, allows an accurate determination of the observed Gamow-Teller decay strengthB Σ (GT)=1.513±0.055 for102Cd. This result is discussed in comparison with predictions from model calculations.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01560637
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