Sökning: "drill"

Visar resultat 31 - 35 av 88 uppsatser innehållade ordet drill.

1. 31. Gremmeniella abietina-epidemin 2001 : har skogen återhämtat sig?

   Magister-uppsats, SLU/Dept. of Forest Mycology and Pathology

   Författare :Lo Grönkvist Wichmann; [2011]
   Nyckelord :Gremmeniella abietina; Pinus sylvestris; tillväxt; kronutglesning; mortalitet; tall; gallring; gödsling; dendrokronologi; patogen; skogsskötsel;

   Sammanfattning : The fungus Gremmeniella abietina causes damage to conifers that can lead to tree death. In 1999 and 2001 the pathogen caused severe attacks in Sweden, where about 500 000 ha of pine forest were affected. Trees of all ages were attacked, but mainly forests between 30-60 years that were ready for their first commercial thinning. LÄS MER

3. 32. Getting Serious about Math: Serious Game Design Framework & an Example of a Math Educational Game

   Master-uppsats, Lunds universitet/Kognitionsvetenskap

   Författare :Layla Husain; [2011]
   Nyckelord :educational game; serious games; game based learning; education; math; millenials; Mathematics and Statistics; Technology and Engineering;

   Sammanfattning : Serious games have been increasingly interesting to educators recently, but it is difficult to find good games that truly address the needs of young learners, especially in mathematics. Some games are either too simplistic or are not actual games. LÄS MER

4. 33. Design and Modeling of a Piston Accumulator for a Rock Drill and its Fatigue Strength

   Master-uppsats, Linköpings universitet/Linköpings universitet/Institutionen för ekonomisk och industriell utvecklingTekniska högskolan

   Författare :Nadeem Ul Haq; [2010]
   Nyckelord :Rock Drill; Piston Accumulator; Fatigue;

   Sammanfattning : This Master Thesis has been performed at Atlas Copco Rock Drills AB, Örebro and at Linköping University, Sweden from February 2010 through August 2010.The project deals with performance improvement of hydraulic rock drill machine manufactured by Atlas Copco Rock Drills. LÄS MER

5. 34. Identification of extreme load cases for a surface drill rig by means of MBS simulations

   Uppsats för yrkesexamina på avancerad nivå, Uppsala universitet/Avdelningen för teknisk databehandling

   Författare :Anders Anbo; [2010]
   Nyckelord :mbs; mbd; dynamic; load; loads; atlas copco;

   Sammanfattning : This master thesis is Atlas Copco Craelius’ first step in incorporating numericalmethods in load case analysis during the development process. Atlas Copco needs toconstantly evolve and refine their methods in the design process to remain as thenumber one manufacturer of mining and construction equipment. LÄS MER

7. 35. En studie av metodbyte vid sintring av hårdmetaller till mikrovågsintring samt dess ekonomiska fördelar : Självständigt arbete i teknisk fysik med materialvetenskap & Självständigt arbete i kemiteknik

   Kandidat-uppsats, Uppsala universitet/Institutionen för teknikvetenskaper; Uppsala universitet/Institutionen för teknikvetenskaper; Uppsala universitet/Institutionen för teknikvetenskaper; Uppsala universitet/Institutionen för teknikvetenskaper; Uppsala universitet/Institutionen för teknikvetenskaper; Uppsala universitet/Institutionen för teknikvetenskaper; Uppsala universitet/Institutionen för teknikvetenskaper

   Författare :Ernesto Vargas; Kim Färnlund; Annika Bäcklin; Karolin Karlsson; George Massoud; Viktor Renman; Erik Björklund; [2010]
   Nyckelord :Microwaves; sintering; hard metals; drill bits; Mikrovågor; sintring. hårdmetaller; borrstift;

   Sammanfattning : The aim with this study was to investigate the effects a change of manufacturing process would have on the mechanical properties of drill bits made of a WC/Co composite used for stone cutting. The method used today is sintering, where the material is heated in a conventional sintering oven. LÄS MER