| 1. |
- Bohgard, Mats, et al.
(författare)
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Personal Aerosol Sampler with Size Fractionation and Time Resolution
- 1982
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Ingår i: Aerosols in the Mining and Industrial Work Environment. ; 3, s. 907-917
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Bokkapitel (övrigt vetenskapligt/konstnärligt)abstract
- This chapter describes a personal aerosol sampler with size fractionation and time resolution that gives samples for elemental analysis. An impaction stage collects coarse particles and a filtration stage collects finer ones. Sampling in consecutive time intervals is performed on different impaction and filtration surfaces. These sampling surfaces corresponding, for example, to 15-min intervals, may be analyzed with particle-induced X-ray emission analysis (PIXE) for fast, low-cost determination of most of the elements of hygienic interest that are present in aerosols in concentrations far below their current threshold limit values (TLV). The sampler is intended to be used for aerosol measurements in work environments to obtain detailed information on exposures.
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| 2. |
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| 3. |
- Johansson, Bengt O H, 1934-2021
(författare)
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Förtätning i Traneberg
- 1984
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Ingår i: Kulturminnesvård. - Stockholm : Riksantikvarieämbetet. - 0346-9077. ; :6, s. 16-18
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Tidskriftsartikel (populärvet., debatt m.m.)abstract
- De försök som Stockholms kommun bedriver med tilläggsisolering och förtätning av smalhusområden på bekostnad av kringliggande parkmark är i princip oförenliga med den planeringsideologi som låg bakom dessa områdens tillkomst. Men sett ur andra, mer konventionella social synvinklar, verkar förtätningen bli lyckosam. Med en bättre kulturhistorisk analys av förutsättningarna borde helhetsresultatet kunna bli riktigt bra, menar länsantikvarie Bengt OH Johansson, som här ger några synpunkter på förtätningen av smalhusområdet Traneberg i västra Stockholm.
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| 4. |
- Johansson, Bengt O. H., et al.
(författare)
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Hjorthagens kyrka
- 1980
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Bok (övrigt vetenskapligt/konstnärligt)
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| 5. |
- Johansson, Bengt O. H.
(författare)
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Regeringsprövning av Q
- 1981
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Ingår i: Kulturminnesvård. - Stockholm : Riksantikvarieämbetet. - 0346-9077. ; :3, s. 1-8
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Tidskriftsartikel (populärvet., debatt m.m.)abstract
- Gamla Stan i Stockholm, Staden Mellan Broarna, har i det nya planförslaget som regeringen fastställde i december 1980 betecknats som ett kulturreservat. Att hindra ytterligare exploatering i området och bevara intrycket av en levande stadsmiljö samt att ge råd och riktlinjer för bevarande och upprustning av byggnaderna utgör de viktigaste delarna i det nya planförslaget. Läns antikvarieBengt O H Johansson vid länsstyrelsen i Stockholm redogör för regeringens fastställelse av stadsplanen.
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| 6. |
- Kjellén, G., et al.
(författare)
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Scintigraphy, radiography, and acid clearing in dysphagia patients after anti-reflux surgery
- 1984
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Ingår i: Scandinavian Journal of Gastroenterology. - 0036-5521 .- 1502-7708. ; 19:8, s. 1022-1026
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Tidskriftsartikel (refereegranskat)abstract
- Oesophageal emptying was studied with scintigraphy, radiography, and the acid clearing test (ACT) in 18 patients reporting dysphagia and previously operated on with fundoplication. Radiography with contrast medium, isodense with water, revealed abnormalities in either motility or emptying capacity in 39% (7/18). A A barium meal showed abnormalities--that is, a tight repair, disruption of the fundoplication, or recurrence of the hernia--in 56% (10/18). The ACT was prolonged in 40% (6/15) of the patients. Pathological findings at scintigraphy with a solid bolus were found in 67% (12/18). Even if scintigraphy with a solid bolus is the method that identifies the highest number of patients with impaired oesophageal function among the tests used, it cannot differentiate between functional and anatomical disorders. A barium meal examination is the method of choice when an anatomical disorder is suspected.
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| 7. |
- Nordborg, C, et al.
(författare)
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Morphometric study of mesenteric and renal arteries in spontaneously hypertensive rats
- 1983
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Ingår i: Journal of Hypertension. - 1473-5598. ; 1:4, s. 333-338
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Tidskriftsartikel (refereegranskat)abstract
- Arteries from spontaneously hypertensive rats (SHR), stroke-prone spontaneously hypertensive rats (SHRSP) and Wistar-Kyoto controls (WKY) were fixed by immersion and plastic embedded. The media cross-sectional area and the length of the internal elastic membrane were measured. The ratio between media thickness and internal radius was then calculated for a standardized condition, implying a perfectly smooth and circular internal elastic membrane. An increase of the media to radius ratio was already demonstrable in visceral arterial branches of SHR and SHRSP by 15 days of age, indicating that changes of arterial structure could be of pathogenetic importance in early hypertension. At seven months of age the ratio was significantly increased in mesenteric arterial branches of SHR and SHRSP and in renal arterial branches of SHRSP. The media to radius ratio was markedly increased in the renal and superior mesenteric arterial trunks of adult SHR (P less than 0.001 in both) and SHRSP (P less than 0.001 and P less than 0.01). This was due to a greater media cross-sectional area in the former vessels and to a combination of greater media and reduced radius in the latter.
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| 8. |
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