| 1. |
- Akselsson, Roland, et al.
(författare)
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Mass Calibration in PIXE Analysis
- 1977
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Ingår i: X-Ray Fluorescence Analysis of Environmental Samples. - 0250401347 ; , s. 175-180
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Bokkapitel (refereegranskat)
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| 2. |
- Akselsson, Roland, et al.
(författare)
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Particle Size Distribution and Human Respiratory Deposition of Trace Metals in Indoor Work Environments
- 1976
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Ingår i: Annals of Occupational Hygiene. - : Oxford University Press (OUP). - 1475-3162. ; 19:3-4, s. 225-238
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Tidskriftsartikel (refereegranskat)abstract
- Respiratory response to inhalation of fine particles has been investigated for the aerosol generated by welding. Particles were sampled using a pair of 5-stage cascade impactors operating at 1 l./min flow rate. The subject exhaled into one impactor through an air ballast arrangement, and the other impactor simultaneously sampled the surrounding air. Particle size fractions were analyzed for principal elemental constituents from sulphur to lead using proton induced X-ray emission, PIXE. The results indicated a complex respiratory response, including both increase in particle size due to exposure to high humidity in the respiratory tract and deposition of particles during inhalation. The response was found to be different for the element group Mn, Cr, Fe, Ni compared to the group K, Ca, Ti by observing the associations among the elements as a function of particle size in the inhaled and exhaled aerosol. However, for respiratory deposition efficiency alone in all runs averaged together, no systematic differences between the different elements are demonstrated at the 99 % confidence level.
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| 3. |
- Hunter, Robert L, et al.
(författare)
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Are Multinational Liquidity Management Models Worth Their Cost?
- 1979
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Ingår i: Management Accounting. - 0025-1690. ; 61:6, s. 51-56
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Tidskriftsartikel (refereegranskat)abstract
- As multinational corporations (MNCs) have increased the scope and complexity of their operations, the need for liquidity management systems has become increasingly apparent. The aftermath of FAS No. 8 on foreign currency translation and subsequent studies on foreign exchange risk management indicate that MNCs are increasingly seeking to use these systems to control and use...
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| 5. |
- Jaenson, Thomas G.T. 1948-
(författare)
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Virus-like rods associated with salivary gland hyperplasia in tsetse, Glossina pallidipes
- 1978
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Ingår i: Transactions of the Royal Society of Tropical Medicine and Hygiene. - : Oxford University Press (OUP). - 0035-9203 .- 1878-3503. ; 72:3, s. 234-238
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Tidskriftsartikel (refereegranskat)abstract
- Long, virus-like rods were discovered in hyperplastic salivary glands of Glossina pallidipes Austen from Kibwezi Forest (2 ° 27′ S, 37 ° 55′ E), Kenya. The glands were enlarged up to four times the normal diameter. This increase in size was due to a cellular proliferation of the glandular epithelial cells and hypertrophy of their nuclei and cytoplasm. Nuclear and cytoplasmic inclusions were present in the enlarged cells but were not found in cells of normal-sized glands. Electron microscopy revealed many virus-like rods in the abnormal glands. Males with such glands were often completely sterile. Abnormal growth of the ovarioles was a significant feature of young females with hyperplastic glands. Both sexes of wild and laboratory-bred flies were found with enlarged glands. One way of transmission of the trait seems to be from mother to progeny.
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