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| 2. |
- Akselsson, Roland, et al.
(author)
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Elemental Abundance Variation with Particle Size in Aerosols from Welding Operations
- 1974
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In: Proceedings of the Second International Conference on Nuclear Methods in Environmental Research. ; , s. 395-401
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Conference paper (peer-reviewed)abstract
- The effect of airborne particulate matter on human health is today of considerable research interest. Essential parameters include elemental composition sampling with low pressure cascade impactors and analysis by particle induced x-ray emission spectroscopy (PIXE). It is shown that the aerosol generated by arc welding operations is several orders of magnitude denser than aerosols in ambient air. Most of the mass is found on particles between 0.1 and 1µm diameter, but the size distribution differs from one welding technique to another. The relative composition of the aerosol is found to differ significantly from that of both the welding piece and the electrode indicating the presence of fractionation of the type indicated in this work in designing electrodes and welding pieces to minimize the health hazards associated with the welding.
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| 3. |
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| 6. |
- Aronsson, Karin, 1946-
(author)
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Att tala eller inte tala
- 1978
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In: Undervisningspsykologi. - Stockholm : AWE/Gebers. - 9120048955 ; , s. 203-212
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Book chapter (other academic/artistic)
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| 23. |
- Hallengren, Anders, 1950-
(author)
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Våldet i hemmen
- 1978
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In: Svensk Tidskrift. - Stockholm : Svensk Tidskrift. - 0039-677X. ; :2, s. 67-73
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Journal article (pop. science, debate, etc.)abstract
- The incidence of domestic violence and child abuse in Sweden seen from a legal, historical and psychological viewpoint.
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| 24. |
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| 25. |
- Hultin, Jan, 1936
(author)
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Vattenförsörjningen i Etiopien
- 1979
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In: Resurser och näringsliv. Politik. Samhällskunskap för gymnasieskolan. Antologi F.. - Stockholm : Esselte Studium AB. - 9124291161 ; , s. 57-63
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Book chapter (other academic/artistic)
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| 26. |
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| 27. |
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| 28. |
- Kullenberg, Bertil, et al.
(author)
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Entomology
- 1976
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In: Uppsala University 500 years. - Uppsala : Uppsala universitet. ; , s. 55-64
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Book chapter (other academic/artistic)
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| 29. |
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| 30. |
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| 31. |
- Lannefors, Hans, et al.
(author)
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Grundämnessammansättning i olika partikelstorleksfraktioner av den atmosfäriska aerosolen
- 1978
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Reports (other academic/artistic)abstract
- Beskrivning ges av analysteknik (protoninducerad röntgenstrålning), provtagningsteknik (kaskadimpaktor av Battelle-typ) och provberedningsteknik. Utfört arbete i form av provbehandlingsförbättringar, konstruktion och förbättring av provtagare, bestämning av lämpliga analysparametrar samt uppbyggnad av ett dataprogramsystem presenteras. Sammanställning av resultat i form av beräknade medelvärden i klasser efter luftmassans historia redovisas.
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| 32. |
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| 33. |
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| 34. |
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| 35. |
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| 36. |
- Lohm, Ulrik, 1943-, et al.
(author)
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Levande jord
- 1978
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Reports (pop. science, debate, etc.)
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| 37. |
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| 38. |
- Lohm, Ulrik, 1943-
(author)
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Samspelet mellan markorganismer
- 1977
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In: Sveriges skogsvårdsförbunds tidskrift. - 0371-2907. ; 75, s. 141-147
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Journal article (pop. science, debate, etc.)
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| 39. |
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| 43. |
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| 45. |
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| 46. |
- Rahm, Lars, 1948-, et al.
(author)
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On thermal convection in stratified fluids
- 1979
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In: Geophysical and Astrophysical Fluid Dynamics. - : Informa UK Limited. - 0309-1929 .- 1029-0419. ; 13, s. 51-65
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Journal article (peer-reviewed)abstract
- The study of the mechanisms controlling the stratification in closed fluid regions is an important branch of geophysical fluid dynamics. Part of this subject can be handled with a simple linear model, consisting of a buoyancy layer at the non-horizontal boundaries of a container and an advective-diffusive interior coupled by volume continuity. The model is valid under the following conditions: firstly, the buoyancy-frequency characterizing the solution must be sufficiently large to give rise to a flow pattern of boundary layer type and, secondly, the non-horizontal walls must not have too large thermal conductivity.The main purpose of the present paper is to summarise previous work done by the authors in this field and to present some consequences of their theory not previously discussed.Three important cases are discussed; certain stationary solutions, the decay of a given stratification and the build up of a stratification in a homogeneous fluid. The experimental results concerning the afore-mentioned cases are presented.
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| 47. |
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| 48. |
- Rowa, Per, et al.
(author)
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Datoriserad mätning av vita blodkroppars rörelse
- 1978
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Reports (other academic/artistic)abstract
- Denna skrift redovisar försök att kvantitativt mäta rörelsen hos levande vita blodkroppar .Mätningarna sker helt automatiskt och i reell tid.Bilden av preparatet överförs via en TV-kamera på mikroskopet till en dator. Datorn utnyttjar en speciell bildprocessor för bildoperationer och mätvärdesextraktion .Cellernas individuella rörelser både i form av globala tyngdpunktsförflyttningar och lokala formförändringar uppmäts. För hela populationen beräknas en mängd statistiska uppgifter och resultatkurvor uppritas under mätningen .Praktiska och principiella svårigheter vid analysen av TV-bilden beskrivs utförligt.
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| 49. |
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| 50. |
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