23 uppsatser · sida 1 av 2
en litteraturstudie
… containing < 40 % Si) and in some clays (30-60% Si). Plant species differ in silica uptake. Higher plants can be devided into three categories (1) plants with active uptake, (2) plants with passive uptake, and (3) plants that avoid silica. Also the deposition site for silica …
… the basic idea of the project is to replace cement with a supplement called Silica sol. Silica sol is known as a gelling liquid. The gel time is controlled by a mixing of saline. Depending on the amount saline that gets mixed in, the gel time varies. By controlling the ratio of …
… the vacuum pump seal water at Hellisheiði power plant. This is done to prevent silica scaling and clogging in pipes and reinjection wells as well as eliminating vacuum pump seal water from the plant. The experiments were done in four stages: the first stage comprised of tests …
… changed after selection of the semen with a centrifugation method through the silica-spheres, gradient or a single-layer, i.e to use the chromatin integrity analysis as a method to evaluate the selection method. The use of chilled transported semen has increased a lot during the …
… byggts för Norrortsleden norr om Stockholm, där cement- och keminjektering med Silica Sol använts tillsammans med tillsatsmedlet Xypex i olika kombinationer. Den andra är Löttingetunneln, också den en del av Norrortsleden, där klassisk cementinjektering använts. Sist är …
Analys av tungmetallers distribution inom jordprofiler tagna från Abiskoområdet, nordvästra Sverige
… to determine whether metal concentrations were naturally derived from soil silicate minerals or from non-silicate (anthropogenic) sources. From the inner domains of the circles towards the outer domains where the latter contained the highest amounts of organic matter that bind …
skak- och kolonnförsök
… than expected. A possible explanation could be that the easy weathering of Ca-silicate compounds favoured the sorption of phosphorus. Results from Visual Minteq modelling showed that the probability of calcite formation in Filtra P and Polonite® are very likely. The two …
Social housing in Northern Europe and the importance of social and political consideration in planning. Focus of the essay lies on the "burning suburbs" of France, based on literature studies combined with a study visit to Les Minguettes outside of Lyon.
… high pressure airless applied systems. Drewplus TS-4481 is a formulation of silicas, paraffinic oils and silicon-derivates. According to the results, it is concluded that this additive is highly compatible with the specific coating studied in this thesis. The project was …
test av olika filtertekniker avsedda för enskilda brunnar
… and other elements forming oxyanions, dissolved organic carbon (DOC) and pH. Silica (H2SiO40) can compete with arsenic for adsorption sites in filters based on metal (hydr)oxides. Sulphate (SO42-) can be a competitor through anion exchange in filters based on SBA.
The use of Power Line Communication, PLC, as a communication solution for Automated Meter Reading, AMR, is popular by utilities in Sweden and other parts of the world due to demands of accurate and fast meter reading. However the use of the electrical grid as a communication …
… are bittering agents, essential oils, flavonoids, tanning agents, resins, silica, carbohydrates, coumarins, organic acids and terpenes. Essential oils derived from angelica root are composed of over 60 different constituents. ??phellandrene and ??pinene have the highest …
… columns were tested, for example, by changing the extraction column from a C8 silica sorbent to Oasis HLB (a polymer sorbent). Different internal standards were evaluated as a result of discovering the signal suppression of the previous internal standard clopidogrel acid …
Det finns idag inget enkelt sätt att dela mappar och filer mellan datorer över Internet utan att behöva spara dessa på flera ställen. Detta är ett problem då man ibland inte vill ha all sin information spridd över flera källor eller inte har nog med utrymme för att spara samma …
The influence of calcium and magnesium on the expellation of arsenic in the fluidized bed furnace
… size. Calcium oxide binds the most arsenic while limestone and calcium silicate bind it the least. Smaller particles reacted in a larger extent with arsenic. When roasting ore concentrates with high arsenic levels in the fluidized bed furnace, the addition of slurry from the …
