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352 Uppsatser om Formation of cracks - Sida 24 av 24
Effekter av gödsling i äldre tallbestånd på renbetesväxter i fält- och bottenskikt :
Reindeer husbandry and Forestry are both area related industries and will in big extent use the same lands. Conflicts often arise because of that the industries have different interests. Many of the activities done by the forestry influences the reindeer husbandry in an undesirable way, simultaneously as the reindeer husbandry activities can have negative consequences for the forestry. One such forestry activity is fertilization.
It was during the 1960´s forest fertilization began to be practiced and the reason was that the increase in growth that the fertilization gave could be able to cover for the future shortage in wood many feared.
During the 1970´s when the fertilizing activities were most intensive about 200 000 ha was fertilized annually.
Landvinning : scenarier för efterbehandling och gestaltning av Aitikgruvan, Gällivare
Open pit mining creates huge amounts of tailings and waste rock deposits. Due to it's content of sulphide minerals, predominantly pyrite (FeS2), there is a risk of oxidation and formation of acid water containing heavy metals, known as Acid Rock Drainage (ARD). To prevent the process of oxidation, the tailings and waste rock have to be reclaimed. The most commonly used methods of reclamation are a coverage of water or soil.
Mining also results in a large-scale interference in the landscape that will make an eternal change of its appearance.
Re:Regional
?Re:Regional? is a diploma work by Sanna Alm and Ylva Hedin, for the Master?s Programme in Spatial Planning presented at the Blekinge Institute of Technology, Karlskrona, Sweden. ?Greater Helsinki Vision 2050 ? International Ideas Competition? was the starting point of this study. The competition was launched the 15th of December 2006 and the closing date was the 31st of May.
Re:Regional
?Re:Regional? is a diploma work by Sanna Alm and Ylva Hedin, for the Master?s
Programme in Spatial Planning presented at the Blekinge Institute of
Technology, Karlskrona, Sweden. ?Greater Helsinki Vision 2050 ? International
Ideas Competition? was the starting point of this study. The competition was
launched the 15th of December 2006 and the closing date was the 31st of May.
Geosynteter för hållbara vägar : Modell för jämförelse av vägöverbyggnader med eller utan geotextiler och/eller geonät
The different material layers as part of a road construction fill all a function so theroad becomes durable, safe, comfortable and aesthetically pleasing. Recently, anew group of construction materials started to play an important role in roadconstruction ? geosynthetics.This thesis addresses the two most common types ofgeosynthetics used in modern road construction, namely geogrids and geotextiles.The most common use of geogrids is reinforcement of poor subgrade by usinggeogrid soil reinforcement, which occurs when road material particles wedge inthe geogrid?s mesh. Geotextiles act partly as a barrier that prevents the finermaterial in the below ground from being mixed with coarser upper material andalso act as a load spreader.Road contractors often face a choice of whether geogrids and/or geotextiles areappropriate in a particular road project and also how much profit the choice mightbring. This phase in the tender calculation process is the intended scope of thisthesis.The thesis deals with both the "hard" cost-function aspects and the "softer" values e.g.
Att restaurera forna tiders beståndsstruktur : ett exempel från Jämtgaveln
In Sweden today so-called "prescribed nature conservation burning" is performed due to the change in silvicultural law, certification and an increased knowledge regarding the field of fire in the forest landscape. The aim is to re-create structures and qualities made by the fire regimes of the past, though on a much smaller geographical scale. The structures and qualities to be re-created are for example broad leaf stands, trees with large diameter, heterogeneous stands regarding variables such as age and diameter. If we increase our knowledge of the constitution of forests characterized by fire, then we will be able to set goals for what achievements to reach both on landscape scale and stand scale.
The aim of this paper is to try to describe how a stand from the past was composed regarding mainly the spatial arrangement and compare it with the stand of today in the same place. This to be done by using relict material, that is stumps and dead standing trees.
Visioner och drömmar i Sveriges 4:e Storstadsregion : Järnvägens betydelse för regionalutvecklingen i Linköping/Norrköping
Regioner har alltid funnits. Det har stått för det intermediära, en funktion mellan det lokala och det centrala styret. Den geografiska omfattningen har varit allt från länsindelningar till stora internationella eller kulturella regioner. Historiskt sätt, kan regioner vara funktionella, administrativa eller kulturella. När Sverige övergick till att bli ett industrisamhälle, blev regioner en viktig utgångspunkt för att förändra de nationella näten.