| 1. |
- Malmqvist, K. G., et al.
(författare)
-
PIXE and proton microprobe advances at the Lund Institute of Technology
- 1989
-
Ingår i: Nuclear Inst. and Methods in Physics Research, B. - 0168-583X. ; 40-41:PART 1, s. 685-689
-
Tidskriftsartikel (refereegranskat)abstract
- A review of recent advances in high-energy ion beam analysis at the Lund Institute of Technology is presented. A nonvacuum specimen chamber allows chemical speciation using a combination of ion beam analysis and controlled heating. The development of a new versatile scanning proton microbeam based on a new dedicated accelerator, an achromatic triplet lens and an advanced specimen chamber is outlined together with the performance of a microVAX-II/VMEbus-based data acquisition system.
|
|
| 2. |
- Asp, N G, et al.
(författare)
-
Dietary fibre in type II diabetes
- 1982
-
Ingår i: Acta medica Scandinavica. Supplementum. - : Wiley. - 0365-463X .- 0001-6101. ; 210:S656, s. 47-50
-
Tidskriftsartikel (refereegranskat)abstract
- Recent studies have indicated that diets rich in digestible carbohydrates and dietary fibre might be beneficial in the regulation of type II non insulin dependent diabetes (NIDD). Addition of the gel forming type of dietary fibre such as pectin and guar gum to meals or glucose solutions reduces post-prandial glucose and insulin response. Addition of cereal fibres in the form of bran seems to have long term beneficial effect improving glucose tolerance. Little is known, however, concerning effects of dietary fibre naturally occurring in food on postprandial glucose and hormone response. In the present study we prepared two breakfast meals which were similar regarding digestible carbohydrates but differed in their dietary fibre content. One of the meals, including whole grain bread and whole apples, contained 8.4 g of dietary fibre, and the other one, containing white bread and apple juice, 3.1 g. When given to eight NIDD, the fibre rich breakfast gave significantly lower blood glucose increment during the three hours following ingestion. The results indicate that foods rich in dietary fibre might be useful in the regulation of type II diabetes.
|
|
| 3. |
- Andersson-Engels, S., et al.
(författare)
-
Tissue diagnostics using laser-induced fluorescence
- 1989
-
Ingår i: Berichte der Bunsengesellschaft für Physikalische Chemie. - : Wiley. - 0005-9021. ; 93:3, s. 335-342
-
Tidskriftsartikel (refereegranskat)abstract
- We have performed extensive investigations of laser-induced fluorescence in animal and human tissue aimed at instant tissue characterization. Autofluorescence, as well as specific fluorescence from HPD/DHE and other photosensitizers, has been utilized. The studies have been focused on the demarcation of malignant tumours and atheroscleortic plaques. A nitrogen laser or an excimer-pumped dye laser was used to induce fluorescence, which was analysed with an intensified optical multichannel system. A fibre-optic sensor system was developed for the clinical work. Multi-colour fluorescence imaging has also been demonstrated along a line and equipment for two-dimensional imaging is being constructed. Dimensionless spectroscopic functions, which are not affected by factors that are clinically uncontrollable have been employed for optimum tissue discrimination. The investigations have so far been performed in a time-integrated mode, but time-resolved studies are now being initiated to fully exploit the diagnostic power of tissue laser-induced fluorescence. In addition to a presentation of our own work a brief review of tissue fluorescence studies performed by other groups is also given.
|
|
| 4. |
|
|
| 5. |
|
|
| 6. |
- Johansson, L G, et al.
(författare)
-
Ferruginous bodies and pulmonary fibrosis in dead low to moderately exposed asbestos cement workers: histological examination
- 1987
-
Ingår i: British Journal of Industrial Medicine. - 0007-1072. ; 44:8, s. 550-558
-
Tidskriftsartikel (refereegranskat)abstract
- Histological slides from the lungs of 89 dead asbestos cement workers have been examined with respect to ferruginous bodies and fibrosis. The results have been compared with individually matched controls with no known exposure to asbestos, and related to asbestos exposure, expressed as duration of exposure and cumulative asbestos dose, and smoking habits. The asbestos cement workers studied had been employed for on average 15 years, with a mean cumulative dose of 26 fibre-years per ml (f-y/ml). Clear dose-response relations between exposure (duration of exposure and cumulative asbestos dose) and level of ferruginous bodies were found. An association was evident already at a low cumulative dose (1-10 f-y/ml). Fibrosis was more common and more pronounced among the exposed workers than among controls. An association between ferruginous bodies and fibrosis was also found. Among the controls, but not among exposed workers, there was an association between smoking history and fibrosis.
|
|
| 7. |
|
|
| 8. |
|
|
| 9. |
- Samuelson, Gösta, 1930-, et al.
(författare)
-
Food and nutrient intakes in Swedish diabetic children.
- 1989
-
Ingår i: European Journal of Clinical Nutrition. - 0954-3007 .- 1476-5640. ; 43:11, s. 801-3
-
Tidskriftsartikel (refereegranskat)abstract
- Food and energy intakes in diabetic children, 7-9 and 12-14 years of age, were studied by the 7-d record method. The mean duration of diabetes in the younger group was 3.0 years and in the older group 4.2. The children had 3 main meals and 3.4 light meals daily. The median daily number of sandwiches was 7, often offered as snacks. All children used a low-fat margarine, low-fat cheese and low-fat milk. Sweets and diabetic food were seldom used. Of the energy intake protein contributed 18 per cent, fat 32 per cent and carbohydrates 50 per cent, including sucrose 2 per cent. Mean daily intake of fibre was 20 g. Compared to healthy children of the same age and from the same areas of Sweden the diabetics had a more regular meal pattern, their energy intakes did not differ, but the diet of diabetics was lower in fat and sucrose and higher in protein. The mean height, weight and BMI did not differ from healthy children.
|
|
| 10. |
|
|
| 11. |
|
|
| 12. |
|
|
| 13. |
- Ask, Per, et al.
(författare)
-
Accuracy and choice of procedures in 24-hour oesophageal pH monitoring with monocrystalline antimony electrodes.
- 1986
-
Ingår i: Medical and Biological Engineering and Computing. - 0140-0118 .- 1741-0444. ; 24:6, s. 602-608
-
Tidskriftsartikel (refereegranskat)abstract
- In 24 h pH monitoring, the evaluation is dependent on the absolute accuracy of the pH measurements. Several sources of error exist, such as the chemical composition of calibration buffers and reference electrode gel and the effect of temperature on both the pH and the reference electrodes. We investigated the magnitude of these errors for the monocrystalline antimony electrode. Similar analysis applies to other types of pH electrodes. The errors we found are important when choosing a calibration procedure. We recommend a calibration procedure in which the pH and reference electrodes are both put in a beaker with the calibration buffers prior to and after the 24 h measurements. The calibration buffers and the electrode gel should have a specially selected ion composition where, for example, the Cl-ion concentration is critical. Corrections for differences in temperature between the calibration and the in situ measurements must be added. The pH measurements can be checked by performing in situ calibration.
|
|
| 14. |
- Ask, Per, et al.
(författare)
-
On the use of monocrystalline antimony pH electrodes in gastro-oesophageal functional disorders.
- 1982
-
Ingår i: Medical and Biological Engineering and Computing. - 0140-0118 .- 1741-0444. ; 20:3, s. 383-389
-
Tidskriftsartikel (refereegranskat)abstract
- Monocrystalline antimony electrodes have been shown to be suitable for thein vivo determination of pH in blood, tissue and in the upper gastro-intestinal canal. Thanks to their small dimensions it has been possible to mount them into conventional manometry catheters for oesophageal investigation. The monocrystalline antimony pH electrode has several advantages over the conventional pH glass electrode; better accuracy, shorter rise time, smaller dimensions. The monocrystalline antimony electrode has been used for long-term registration of gastro-oesophageal reflux, for the oesophageal acid clearing test and for identification of the pH gradient zone between the gastric and oesophageal mucosa. Its use in combination with pressure sensors has added a new dimension to the diagnosis of functional disorders in the gastro-oesophageal region.
|
|
| 15. |
- Back, Ernst, et al.
(författare)
-
Spånskivor från färsk träråvara
- 1987
-
Rapport (övrigt vetenskapligt/konstnärligt)abstract
- Färsk träråvara ger problem med delaminering vid framställning av spånskivor. Prov och analyser har utförts i laboratorie- och industriskala. Fullskaleförsöken bekräftade att lagrad träråvara är bättre än färsk. Ju mer finfördelad råvaran är, desto kortare lagringstid krävs. Färskt virke har väsentligt lägre buffertkapacitet och högre pH än lagrat. Hartshalten är störst i färskt virke och avtar samt ändrar sammansättning vid lagring. Torkade färska spån väts långsammare av karbamidlim än lagrade. Dessa kriterier kan utvecklas till rutinkontroller för träråvaran samt till åtgärder för att bemästra problemen. Projektet kan dock inte sägas ha bevisat om någon/några av de framlagda teorierna eller de påvisade kemisk/fysikaliska skillnaderna är orsak till problemen med färsk träråvara. Projektet bör därför fortsätta.
|
|
| 16. |
|
|
| 17. |
|
|
| 18. |
- Carlsson, Kristina, et al.
(författare)
-
Bebyggelseforskning och dokumentation i Västsverige
- 1985
-
Ingår i: Bebyggelsehistorisk tidskrift. - : Föreningen Bebyggelsehistorisk tidskrift. - 0349-2834 .- 2002-3812. ; :10, s. 114-116
-
Tidskriftsartikel (övrigt vetenskapligt/konstnärligt)
|
|
| 19. |
- Hovgren, K, et al.
(författare)
-
Initial pain course and delay to hospital admission in relation to myocardial infarct size
- 1988
-
Ingår i: Heart & Lung. - : Mosby, Inc.. - 0147-9563 .- 1527-3288. ; 17, s. 274-280
-
Tidskriftsartikel (refereegranskat)abstract
- In 47 patients admitted to the coronary care unit (CCU) at Sahlgren's Hospital because of acute myocardial infarction (MI), we evaluated the intensity of pain before admission and during the first 24 hours in the CCU and the delay time between the onset of symptoms and the decision to go to the hospital. Pain was assessed according to a modified visual analogue scale graded from 0 to 10, where 0 meant no pain and 10 meant the most severe pain. Patients generally scored their maximal pain before admission higher than their pain in the CCU. The maximal pain before admission did not seem to differ between patients with larger and smaller infarcts, estimated from maximal serum enzyme activity, whereas patients with larger infarcts tended to have more intensive pain in the hospital despite consuming more analgesics during the first 3 hours and the first 24 hours in the CCU. The time between onset of symptoms and decision to go to the hospital was not influenced by the intensity of pain before admission, but patients with larger infarcts made their decision much faster than those with smaller infarcts. In conclusion, infarct size, a major determinant of the initial prognosis, appeared to influence the initial pain course in the CCU and to markedly affect the delay time between onset of symptoms and the decision to seek medical care.
|
|
| 20. |
- Joborn, H, et al.
(författare)
-
Serum electrolytes and parathyroid hormone in patients in a coronary care unit
- 1989
-
Ingår i: Journal of Internal Medicine. - 1365-2796. ; 225:1, s. 9-14
-
Tidskriftsartikel (refereegranskat)abstract
- A prospective study was carried out in 499 patients admitted to a coronary care unit (CCU) in order to evaluate the incidence of clinically significant electrolyte disturbances. Low serum potassium values (less than 3.6 mmol l) occurred in 7% of the CCU patients and low serum magnesium values (less than 0.70 mmol l-1) in 6%. Few patients had low values of both these ions (1.9%). In 49 patients the contents of these electrolytes in muscle biopsies were similar to the values of control subjects and were unrelated to treatment with diuretics. Serum calcium was determined in 444 of the patients and was above the reference range in 11 (2.5%). If we consider their concomitant parathyroid hormone (PTH) values, primary hyperparathyroidism was likely to occur in at least seven patients (1.5%). Patients with acute myocardial infarction (AMI) had mean PTH and electrolyte values similar to those of individuals without this disease. In conclusion, the present study indicates that clinically important disturbances of magnesium, potassium or calcium homeostasis are rare among unselected patients admitted to a CCU.
|
|
| 21. |
|
|
| 22. |
|
|
| 23. |
|
|
| 24. |
|
|
| 25. |
|
|
