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| 2. |
- Ansell, Anders, et al.
(författare)
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Concrete Structures
- 2012
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Rapport (övrigt vetenskapligt/konstnärligt)
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| 3. |
- Arm, Maria, et al.
(författare)
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Pulp mill fly ash for stabilization of low-volume unpaved forest roads — field performance
- 2014
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Ingår i: Canadian journal of civil engineering (Print). - : Canadian Science Publishing. - 0315-1468 .- 1208-6029. ; 41:11, s. 955-963
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Tidskriftsartikel (refereegranskat)abstract
- Increased temperatures and rainfalls will give more settlements and less bearing capacity in gravel roads, which will have implications for the forestry. Pulp mill fly ash without additives was used for stabilizing the road base of a low-volume gravel road. A two-year monitoring of the road was conducted, including measurements of achieved ash content, density, water infiltration capacity, and load bearing capacity. The results showed that the ash-stabilized sections performed better than conventionally upgraded sections and also achieved increased bearing capacity over time. Hydration of the fly ash increased the stiffness and decreased the permeability of the road base. The differences were more pronounced during spring thaw. Best performance was achieved in the section with thicker ash stabilized layer.
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| 4. |
- Chester, Alan, et al.
(författare)
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Biosynthesis of the blood-group-B-specific trisaccharide in a rhesus monkey
- 1977
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Ingår i: European Journal of Biochemistry. - 0014-2956. ; 77:1, s. 87-91
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Tidskriftsartikel (refereegranskat)abstract
- A Rhesus monkey, serologically grouped as B, has been shown to excrete low-molecular-weight carbohydrate material in urine closely related to that found in human urine. Galactose feeding resulted in the excretion of a trisaccharide which was shown to be identical to the trisaccharide isolated from the urine of group B humans under the same conditions. Experiments in which [14C]galactose was administered both orally and via an intestinal vein demonstrated that the intestine is the site of biosynthesis.
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| 5. |
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| 6. |
- Hallgren, Jenny, et al.
(författare)
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Factors associated with a greater risk of hospitalization among nursing home residents
- 2013
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Konferensbidrag (refereegranskat)abstract
- Background: Nursing home residents are at a higher risk of hospital care as they represent the oldest and most frail segment of the population. At the same time, hospitalization is associated with a greater risk of various diseases, such as iatrogenic disorders, physical impairments and other adverse outcomes. Knowledge about factors associated with greater risk of hospitalization among nursing home residents is scarce. The aim of this study was to identify predictors of hospitalization among nursing home residents. Methods: Four hundred twenty-nine Swedish nursing home residents (mean age 84.9 years, ± 7.27, 71% females) were followed during three years in the longitudinal SHADES study. Participants were examined on physical, psychological, and social functioning, and information about hospitalization was recorded across the study period. Results: Of the 429 participants, 196 (45.7%) had at least one hospital admission during the three year follow-up period. The most common cause of admission was cardiovascular diseases (CVD) and complications due to falls. Cox proportional hazard regression model controlling for dependency within nursing homes and municipalities showed that nursing home residents with previous falls (HR=1.59, p=.000), cognitive impairment (HR=1.28, p=.008) and malnutrition (HR=1.51, p=.018) were at a greater risk of hospitalization. Discussion: The results suggest that nursing home residents are at high risk of hospitalization, especially due to CVD and falls. Several modifiable factors associated with an increased risk of hospitalization were identified, including nutritional status and falls. Hospital admissions for older people could potentially be reduced by preventive measures aiming at fall reduction and malnutrition.
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| 7. |
- Nordmark, Desiree, et al.
(författare)
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Environmental and mechanical assessment of wood fly ash used for stabilisation of gravel roads
- 2011
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Ingår i: SARDINIA 2011. - Cagliari : CISA Publisher, Italy.
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Konferensbidrag (refereegranskat)abstract
- Due to climate change, there is a growing demand for mechanically stabilising forestry roads in Sweden. One way to do this is by addition of cement to the bearing layer of the road. In this study, cement was replaced by a forestry industry fly ash. Mechanical testing showed that a good stabilising effect could be achieved and at a 30% ash addition, it could resist more than 12 freeze-thaw cycles. The environmental impact of the ash addition was assessed using a standard leaching test at a liquid to solid ration of ten. The results indicated that most constituents of the ash remained fairly stable, but that notably chloride, potassium, calcium and sodium was mobilised in the grams per kg of TS range, adding up to about 1 % of the total mass. This may cause an elevated salinity in the emediate vicinity of a road, e g in the ditches, under a short time period, but is not considered to be a major problem for recipients. The results also indicate that the total content is a poor estimate for the leachability of various elements.
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| 8. |
- Nordmark, Desiree, et al.
(författare)
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Geochemical Behavior of a Gravel Road Upgraded with Wood Fly Ash
- 2014
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Ingår i: Journal of environmental engineering. - 0733-9372 .- 1943-7870. ; 140:10
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Tidskriftsartikel (refereegranskat)abstract
- An insufficient bearing capacity of gravel roads is a common problem in Sweden during thaw periods. In this study, a gravel road at Timrå in central Sweden was mechanically stabilized by mixing 30% wood fly ash into the road base material. Testing of pollutant mobilization was performed both in the lab and at the field site over three years. The differences at a given liquid-to-solid ratio reached several orders of magnitude for some elements. K, Ca, Cl, and SO 4 were easily mobilized and found at elevated concentrations in leachate from the road one year after the road was stabilized. Two years after stabilization, the concentrations had returned to background levels. The stabilization also impacted the infiltration capacity of the road, reducing it by a factor of four. The weathering of Mg, Cu, and Zn from surrounding soil was higher, while the leaching of Al and K was higher from the amended road. Using fly ash in this fashion did not result in any noticeable adverse environmental impacts
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