| 1. |
- Andréassob, A-Ch, et al.
(author)
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Characteristics and outcome among patients with a suspected in hospital cardiac arrest
- 1998
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In: Resuscitation. - : Elsevier Ireland Ltd. - 0300-9572 .- 1873-1570. ; 39:1-2, s. 23-31
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Journal article (peer-reviewed)abstract
- AIM: To describe the characteristics and outcome among patients with a suspected in-hospital cardiac arrest. METHODS: All the patients who suffered from a suspected in-hospital cardiac arrest during a 14-months period, where the cardiopulmonary resuscitation (CPR) team was called, were recorded and described prospectively in terms of characteristics and outcome. RESULTS: There were 278 calls for the CPR team. Of these, 216 suffered a true cardiac arrest, 16 a respiratory arrest and 46 neither. The percentage of patients who were discharged alive from hospital was 42% for cardiac arrest patients, 62% for respiratory arrest and 87% for the remaining patients. Among patients with a cardiac arrest, those found in ventricular fibrillation/ventricular tachycardia had a survival rate of 64%, those found in asystole 24% and those found in pulseless electrical activity 10%. Among patients who were being monitored at the time of arrest, the survival rate was 52%, as compared with 27% for non-monitored patients (P= 0.001). Among survivors of cardiac arrest, a cerebral performance category (CPC) of 1 (no major deficit) was observed in 81% at discharge and in 82% on admission to hospital prior to the arrest. CONCLUSION: We conclude that, during a 14-month period at Sahlgrenska University Hospital in Göteborg, almost half the patients with a cardiac arrest in which the CPR team was called were discharged from hospital. Among survivors, 81% had a CPC score of 1 at hospital discharge. Survival seems to be closely related to the relative effectiveness of the resuscitation organisation in different parts of the hospital.
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| 2. |
- Jonsson, A., et al.
(author)
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Electronic nose for microbial quality classification of grains
- 1997
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In: International Journal of Food Microbiology. - : Elsevier. - 0168-1605 .- 1879-3460. ; 35:2, s. 187-193
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Journal article (peer-reviewed)abstract
- The odour of grains is in many countries the primary criterion of fitness for consumption. However, smelling of grain for quality grading should be avoided since inhalation of mould spores or toxins may be hazardous to the health and determinations of the off-odours are subjective. An electronic nose, i.e. a gas sensor array combined with a pattern recognition routine might serve as an alternative. We have used an electronic nose consisting of a sensor array with different types of sensors. The signal pattern from the sensors is collected by a computer and further processed by an artificial neural network (ANN) providing the pattern recognition system. Samples of oats, rye and barley with different odours and wheat with different levels of ergosterol, fungal and bacterial colony forming units (cfu) were heated in a chamber and the gas in the chamber was led over the sensory array. The ANN could predict the odour classes of good, mouldy, weakly and strongly musty oats with a high degree of accuracy. The ANN also indicated the percentage of mouldy barley or rye grains in mixtures with fresh grains. In wheat a high degree of correlation between ANN predictions and measured ergosterol as well as with fungal and bacterial cfu was observed. The electronic nose can be developed to provide a simple and fast method for quality classification of grain and is likely to find applications also in other areas of food mycology.
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| 3. |
- Lundström, Anders, et al.
(author)
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A low cycle fatigue criterion based on non-linear fracture mechanics
- 1991
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In: Engineering Fracture Mechanics. - 1873-7315. ; 39:4, s. 769-781
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Journal article (peer-reviewed)abstract
- A new approach to the low cycle fatigue problem, based on non-linear fracture mechanics, is investigated. The method is designed to predict final failure of engineering structures containing cracks that are small compared to the significant length dimensions of the structure. The suggested procedure is simple to apply and the failure load can be predicted for a moderately low number of major load applications. The method is confirmed by a large number of experimental tests. Different specimen sizes and types are investigated and by using a scaling factor the results can be given for each tested material in a comprehensive form, irrespective of specimen geometry and initial crack length. In the experiments steel and aluminium materials were used.
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| 6. |
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Mirror's edge
- 1999
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Editorial collection (other academic/artistic)
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| 7. |
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| 8. |
- Vikinge, Trine P., et al.
(author)
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Blood plasma coagulation studied by surface plasmon resonance
- 1999
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In: BIOMEDICAL SENSORS, FIBERS, AND OPTICAL DELIVERY SYSTEMS, PROCEEDINGS. - : SPIE - International Society for Optical Engineering. ; , s. 107-114
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Conference paper (peer-reviewed)abstract
- A surface plasmon resonance (SPR) apparatus was used to investigate blood plasma coagulation in real-time as a function of thromboplastin and heparin concentrations. The physical reason for the SPR signal observed is discussed and 3 different models are proposed. The response curves were analyzed by multivariable curve fitting followed by feature extraction. Interesting parameters of the sigmoid curves were lag time, slope and maximum response. When thromboplastin concentrations were increased, the lag-time decreased and the slope of the curve increased. A prolonged clotting time was mostly followed by increased maximum response, with exception for samples with no or very little thromboplastin added. High heparin concentrations changed the clotting kinetics, as seen from the lag-time vs. slope relation. Atomic force microscopy (AFM) pictures of sensor surfaces dried after completed clotting, revealed differences in fibrin network structures as a function of thromboplastin concentration, and fiber thickness increased with lower thromboplastin concentration. The results correlate well with present common methods.
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