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  • 1
    Electronic Resource
    Electronic Resource
    Ionized hypocalcemia during out-of-hospital cardiac arrest and cardiopulmonary resuscitation is not due to binding by lactate (1997)
    Springer
    Intensive care medicine 23 (1997), S. 1245-1250 
    Details
    ISSN: 1432-1238
    Keywords: Key words Human ; Cardiac arrest ; Cardiopulmonary resuscitation ; Ionized calcium ; Lactate
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract Objective: To determine the relationship between ionized calcium concentrations and blood lactate levels during cardiac arrest and cardiopulmonary resuscitation (CPR). Design: A prospective cohort study. Setting: Emergency department (ED) and general intensive care unit in a city hospital (tertiary care center). Patients and participants: 32 patients with out-of-hospital cardiac arrest; 14 of the patients had a return of spontaneous circulation (ROSC) and 18 of the patients died. Interventions: Basic and advanced life support. Measurements and results: Concentrations of ionized and total calcium, bicarbonate, lactate, and pyruvate and pH were simultaneously determined immediately upon arrival at the ED, and at 30 and 60 min. Upon arrival at the ED, all patients had ionized hypocalcemia (1.09 ± 0.02 mmol/l). Ionized and total calcium concentrations progressively decreased during and after CPR, but pH and bicarbonate concentrations did not show any significant changes. In patients who had ROSC, a significant, but perhaps not clinically relevant, relationship was observed between the ionized calcium concentrations and pH (r 2 = 0.152, p = 0.0117). In the patients who died, there were significant correlations between ionized calcium and pH (r 2 = 0.382, p = 0.0001) and bicarbonate concentrations (r 2 = 0.298, p = 0.0006). No definite correlations were demonstrated when comparing ionized calcium concentrations with lactate and pyruvate concentrations. Conclusions: Ionized hypocalcemia during out-of-hospital cardiac arrest and CPR is not due to binding by both lactate and pyruvate, but may be partly due to complexing by bicarbonate, with some modifications due to variations in pH.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s001340050493
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  • 2
    Electronic Resource
    Electronic Resource
    Platelet activation with massive formation of thromboxane A2 during and after cardiopulmonary resuscitation (1997)
    Springer
    Intensive care medicine 23 (1997), S. 71-76 
    Details
    ISSN: 1432-1238
    Keywords: Key words Cardiac arrest ; Cardiopulmonary resuscitation ; Platelet aggregation ; Prostaglandin I2 ; Thromboxane A2
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract Objective: Hypoxia and ischemia cause endothelial cell damage with consequent platelet activation. The hypothesis that human cardiac arrest accelerates platelet activation and the formation of prostanoids was tested. Design: Prospective, observational cohort study. Setting: Emergency Department and general Intensive Care Unit in a city hospital. Interventions: Basic and advanced life support. Patients and participants: Forty-seven out-of-hospital cardiac arrest patients. The patients were classified into two groups, those who were resuscitated (n=18) and those who died (n=29). Measurements and results: Serial levels of platelet aggregation, thromboxane B2 (TXB2), 11-dehydro-TXB2 and 6-keto-prostaglandin F1 alpha (6-keto-PGF1 alpha) were measured. The results of measurements and demographic data were compared between the groups. Platelet counts decreased at the end of cardiopulmonary resuscitation (CPR), the decrease of the platelet counts showed statistical significance especially in the patients who died (p〈0.001). Platelet aggregation induced by adenosine diphosphate, epinephrine and collagen decreased to the lower limits of normal during and after CPR. Although high values of TXB2 and 11-dehydro-TXB2 continued throughout the study period in the resuscitated patients, 6-keto-PGF1 alpha decreased to the normal range (22.7±3.6 pg·ml–1, p〈0.05) at 24 h after arrival at the Emergency Department. Conclusions: Platelet activation with the massive formation of thromboxane A2 (TXA2) occurs in patients with out-of-hospital cardiac arrest. Successful resuscitation is not associated with the balanced production of PGI2 against the TXA2 formation.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s001340050293
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  • 3
    Electronic Resource
    Electronic Resource
    Ferromagnetic Mn/C/Si films (1995)
    [S.l.] : American Institute of Physics (AIP)
    Journal of Applied Physics 78 (1995), S. 2132-2134 
    Details
    ISSN: 1089-7550
    Source: AIP Digital Archive
    Topics: Physics
    Notes: Ferromagnetism at room temperature has been found in Mn/C/Si films prepared by sequential deposition of these elements at a substrate temperature about 360 °C by vacuum evaporation. The saturation magnetization increases rapidly with the carbon quantity, and it is about 250 emu/cc for a film with a nominal structure of Mn(6 nm)/C(0.5 nm)/Si(6 nm). The magnetization measurements at low temperatures show that the magnetic moment per ferromagnetic Mn atom corresponds to more than 1.2 Bohr magnetons. © 1995 American Institute of Physics.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.360195
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  • 4
    Electronic Resource
    Electronic Resource
    The effect of cardiac output on the onset of neuromuscular block by vecuronium (1995)
    Oxford, UK : Blackwell Publishing Ltd
    Anaesthesia 50 (1995), S. 0 
    Details
    ISSN: 1365-2044
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Medicine
    Notes: A relationship between cardiac output and the onset time of neuromuscular blockade administered into a peripheral vein was evaluated in 41 adult patients. Anaethesia was induced with midazolam and fentanyl and maintained with intermittent doses of fentanyl and 66% nitrous oxide in oxygen. After immobilisation of the forearm in a splint, the ulnar nerve in the other arm was stimulated supramaximally every 10 s and the adduction force of the thumb was recorded. The times from administration of vecuronium 0.08mg.kg-1 to first and 95% depression of twitch response was 82.4(18.0) s and 191.7(33.5) s (mean, SD), respectively. A significant correlation between cardiac index and the onset time of blockade was observed. This study demonstrated that the rapidity of the onset of paralysis in the adductor pollicis muscle after vecuronium injection into a peripheral vein is clearly related to cardiac output.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1365-2044.1995.tb04619.x
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  • 5
    Electronic Resource
    Electronic Resource
    Anomalous Hall resistivities of single-crystal Fe16N2 and Fe–N martensite films epitaxially grown by molecular beam epitaxy (1998)
    [S.l.] : American Institute of Physics (AIP)
    Journal of Applied Physics 84 (1998), S. 1493-1498 
    Details
    ISSN: 1089-7550
    Source: AIP Digital Archive
    Topics: Physics
    Notes: The anomalous and ordinary Hall resistivities for Fe16N2 (saturation magnetization 4πMs: 29 kG at room temperature) and Fe–N martensite (24.8 kG) films have been measured in the temperature range from 30 to 300 K and compared with pure Fe (21 kG) films. All films were epitaxially grown on GaAs(001) substrates by molecular beam epitaxy. The saturation anomalous Hall resistivity ρAS for Fe16N2 at 300 K was 4.0×10−7 V cm/A which was much higher than the values for Fe–N martensite (1.9×10−7 V cm/A) and Fe (1.5×10−7 V cm/A). Also the anomalous Hall constant RA at 300 K for Fe16N2 was 1.5×10−11 V cm/A G, which was much higher than the values for Fe–N martensite (0.8×10−11 V cm/A G) and Fe (0.7×10−11 V cm/A G). Such results are consistent with a much larger magnetic moment for Fe16N2. To investigate the consequences of the giant magnetic moment for Fe16N2 as compared with Fe–N martensite and Fe, the temperature dependences of ρAS and RA were measured. The values of ρAS and RA decreased monotonically with decreasing temperature for Fe16N2, Fe–N martensite and Fe. In the temperature range from 30 to 300 K, the ρAS value for Fe16N2 was much higher than the values for Fe–N martensite and Fe. This originated from the larger thermal fluctuation of the magnetization for Fe16N2. The striking features of Fe16N2 magnetism were its giant magnetic moment and its large thermal fluctuation of the magnetic moment. The electrical resistivity at room temperature for Fe16N2 was around 30 μΩ cm as compared with 10 μΩ cm for Fe. The difference was due mainly to the difference in the residual resistivities. The electrical resistivity for Fe16N2 decreased monotonically with decreasing temperature, which is normal for a metallic material. © 1998 American Institute of Physics.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.368253
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  • 6
    Electronic Resource
    Electronic Resource
    Acceleration of Fe2W Precipitation and Its Effect on Creep Deformation Behavior of 8.5Cr-2W-VNb Steels with Si (1999)
    s.l. ; Stafa-Zurich, Switzerland
    Key engineering materials Vol. 171-174 (Oct. 1999), p. 469-476 
    Details
    ISSN: 1013-9826
    Source: Scientific.Net: Materials Science & Technology / Trans Tech Publications Archiv 1984-2008
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Type of Medium: Electronic Resource
    URL: http://www.tib-hannover.de/fulltexts/2011/0528/01/45/transtech_doi~10.4028%252Fwww.scientific.net%252FKEM.171-174.469.pdf
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  • 7
    Electronic Resource
    Electronic Resource
    Creep Properties of Advanced Heat-Resistant Martensitic Steels Strengthened by L1〈sub〉o〈/sub〉 Type Ordered Intermetallic Phase (1999)
    s.l. ; Stafa-Zurich, Switzerland
    Key engineering materials Vol. 171-174 (Oct. 1999), p. 505-512 
    Details
    ISSN: 1013-9826
    Source: Scientific.Net: Materials Science & Technology / Trans Tech Publications Archiv 1984-2008
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Type of Medium: Electronic Resource
    URL: http://www.tib-hannover.de/fulltexts/2011/0528/01/45/transtech_doi~10.4028%252Fwww.scientific.net%252FKEM.171-174.505.pdf
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  • 8
    Electronic Resource
    Electronic Resource
    Creep Characteristics of Precipitation Hardened Carbon Free Martensitic Alloys (1999)
    s.l. ; Stafa-Zurich, Switzerland
    Key engineering materials Vol. 171-174 (Oct. 1999), p. 491-498 
    Details
    ISSN: 1013-9826
    Source: Scientific.Net: Materials Science & Technology / Trans Tech Publications Archiv 1984-2008
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Type of Medium: Electronic Resource
    URL: http://www.tib-hannover.de/fulltexts/2011/0528/01/45/transtech_doi~10.4028%252Fwww.scientific.net%252FKEM.171-174.491.pdf
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  • 9
    Electronic Resource
    Electronic Resource
    Spontaneous subcapital femoral neck fracture complicating a healed intertrochanteric fracture (1999)
    Springer
    Archives of orthopaedic and trauma surgery 119 (1999), S. 271-275 
    Details
    ISSN: 1434-3916
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract A spontaneous subcapital femoral neck fracture is an uncommon complication of a healed intertrochanteric hip fracture. To determine the etiology of this complication, 274 patients who had been treated for intertrochanteric hip fractures were followed up over an 8-year period from June 1988 to June 1996. We found 7 fractures of the subcapital femoral neck without a history of a trauma. The remaining 267 patients were defined as the control group. All seven patients with fractures of the subcapital femoral neck were women, and their average age at the time of compression hip screw (CHS) fixation was 83 years (range 74–92 years). The subcapital fractures occurred between 4 and 36 months after CHS fixation. The difference in the Singh index between the patient and control groups was statistically significant (P 〈 0.01). However, with regard to the position of the screw, spinal score, age, ambulatory ability, height, weight, and intertrochanteric fracture type (Jensen type), the differences between the patient and control groups were not statistically significant. Based on our findings, we conclude that a high grade of osteoporosis is the most important predisposing factor in the spontaneous development of a subcapital femoral neck fracture after a healed intertrochanteric hip fracture.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s004020050408
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  • 10
    Electronic Resource
    Electronic Resource
    The relation between osteoporosis of the spine and osteoarthritis of the knee (1995)
    Springer
    International orthopaedics 19 (1995), S. 282-284 
    Details
    ISSN: 1432-5195
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Description / Table of Contents: Résumé Nous avons entrepris des recherches sur la relation entre l'ostéoporose de la colonne vertébrale et l'arthrose du genou au moyen de l'absorptiométrie à rayons X et de la radiographie standar sur 82 femmes sélectionnées au hasard (l'âge moyen est de 77 ans). La densité minérale de l'os (BMD=»Bone Mineral Density«) de la colonne lombaire a été évaluée par l'absorptiométrie. Nous avons évalué les informations provenant des radiographies des genoux pour classer l'arthrose en 2 groupes: »Normal« et »Evolue«. La BMD du groupe type »Evolue« était bien supérieure à celle du groupe type »Normal« (p〈0.01).
    Notes: Summary We investigated the relation between osteoporosis of the spine and osteoarthritis of the knee using dual energy X-ray absorptiometry of the lumbar spine to measure bone mineral density and radiographs of the knee in 82 randomly selected females (mean age 77.5 years). Radiographs of the knee were divided into a normal and severe group. The bone mineral density of the severe group was significantly more than that of the normal group.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00181109
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