337 uppsatser · sida 14 av 23
… quality and to help assembling the locknut holding the vertical hinge on the harvesters and foresters from Gremo. At this time the nut is assembled manually by the aid of an overhead crane. The nut is tightened differently from time to time, and there was no specified torque to …
Undersökning av dubbskador som matarhjulens mönster orsakar på timmer, deras uppkomst och hur man kan motverka dem med olika dubbmönster
Detta examensarbete har gjorts på uppdrag av Rottne Industri AB och berör matarhjulens dubbinträngning i virket. Matarhjulen sitter monterade i skördaraggregatet i skördaren, en skogsmaskin som används vid skogsavverkning. Då inträngningen, som uppstår av dubbarna på …
The efficiency of the harvesters work is more often reviewed, than the work of the forwarders. In a local Stora Enso office the differences between the harvesters reported volume of timber, and the actual volume delivered to the industry had been noticed. Therefore, the decision …
en metod för tillämpning i ett kontinuitetsskogsbruk?
Ett ökat brukande av skog enligt skötselprinciper som leder till skiktade beståndsstrukturer, en blandad trädslagssammansättning och kontinuerligt skogbeklädd mark har potential att öka den biologiska mångfalden och värdet för rekreation (Emborg m.fl. 2000, Berg m.fl. 1995 …
… frost, poorly planned drainage systems, bad excavation and damage caused by harvesting operations can decrease the condition of the ditch. The pace of ditch deterioration is affected by peat thickness, water content in soil, peat humification, type of soil, rate of water, frost …
… of pasture is of interest. Pasture is cheap and the farmer does not have to harvest when the cows do it themselves by grazing. This saves both money and time. According to research milk yield decrease with an increasing proportion of pasture in the diet. This is because cows on …
… from climate affect the production of secondary metabolites, such as time of harvest, cultivars and ripeness. Therefore it is not possible to make the conclusion that Arctic climate has a positive effect on accumulation of metabolites in berries.
weed control in cereal crops
… the estimated probabilities for other operations such as tillage, sowing or harvesting. The average workday probability for spraying was estimated to be 0.36 for winter crops and 0.39 for spring crops.The calculations showed that timeliness costs are an important component of …
Reporting harvested and forwarded volumes are important for the forest industry as it provides information of the size of the stock and facilitates logistics. Figures from Holmen Skog show low reporting frequency. The purpose of this study is to investigate the reason and find …
new knowledge for integrated pest management
… very frequently during a growing period until approximately one week before harvest and the spraying was carried out in a big degree during the cool hours of the day. The results also show that more than 50% of the farmers used protective equipment. I conclude that since the …
how to communicate water benchmarks to stakeholders
… in this paper refers to the one used by NOAA (2008); breeding, rearing, and harvesting of plants and animals in all kind of water environments, including but not limited to ponds, rivers, lakes, and the ocean. According to Shamshak & Anderson (2008, p. 74) aquaculture has over …
en studie av användandet av ekologisk bomull inom H&M
… and inorganic fertilizers are used in order to get better and bigger harvests leading to a negative impact on both environment and people working in the production chain. Organic cotton is a great alternative and a growing number of consumers are asking for clothes made out of …
En studie av havres kadmiumupptag
… with cadmium of ten different concentrations after seven days. After harvesting the plants, the roots were separated from the shoots, placed in separate containers and then turned to ashes. The cadmium content was measured three times per sample in an atomic absorption …
En Wizard of Oz-studie
Syftet med denna studie var att utreda hur röststyrning kan användas för kontroll av aggregatet på en engreppsskördare. För att studera röststyrning genomfördes en så kallad Wizard of Oz-studie. Metoden går ut på att en människa ersätter en funktion i ett system som ännu inte …
… The purpose of this thesis is to examine old and new technology intended to harvest energy in biogas and compare these technologies in a decision matrix. We have chosen two areas, combined heat and power (CHP) and upgrading biogas. In this report there are short reviews of heat …
