Sökning: "Anders Berg"

Visar resultat 31 - 35 av 36 avhandlingar innehållade orden Anders Berg.

1. 31. Diversity and phylogeography in Alisma (Alismataceae), with emphasis on Northern European taxa

   Författare :Anders Jacobson; Biologiska institutionen; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; morphology; phytogeography; chemotaxonomy. Physiology of nonvascular plants; taxonomy; Systematic botany; Baltic Sea; Europe; refugia; post-glacial migration; phylogeography; marsh plants; genetic variation; aquatic plants; Alisma; Systematisk botanik; taxonomi; morfologi; kemotaxonomi. Växters fysiologi inte kärlväxter .;

   Sammanfattning : In the present thesis the phylogeny and patterns of genetic diversity of the plant genus Alisma (Alismataceae) were investigated by means of genetic markers (RAPDs, allozymes, and ITS and trnL sequences). Additionally, morphological studies were carried out in paper IV. LÄS MER

3. 32. Structural behaviour of shotcrete in hard rock tunnels

   Författare :Andreas Sjölander; Anders Ansell; Richard Malm; Fredrik Johansson; Eivind Grøv; KTH; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; shotcrete; structural behaviour; material models; rock support; bond strength; fibre-reinforcement; Concrete Structures; Betongbyggnad;

   Sammanfattning : Tunnels in hard and jointed rock are normally excavated in an arch shape to enable the rock mass to support its weight. Since the beginning of the 1980's, fibre reinforced shotcrete (FRS) in combination with rock bolts have been the dominating support method for hard rock tunnels. LÄS MER

4. 33. Analyses of shotcrete stress states due to varying lining thickness and irregular rock surfaces

   Författare :Andreas Sjölander; Anders Ansell; Richard Malm; Fredrik Johansson; Jan Alemo; KTH; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Shotcrete; cracking; shrinkage; block load; varying thickness; numerical simulations; fibre reinforcement; Byggvetenskap; Civil and Architectural Engineering;

   Sammanfattning : Shotcrete is sprayed concrete applied pneumatically under high pressure and was invented in the beginning of the 1900's. This new technique decreased the construction time and since steel fibres were introduced in the shotcrete during the 1970's, shotcrete has been the primary support method for tunnels. LÄS MER

5. 34. Analysis of underground concrete pipelines subjected to seismic high-frequency loads

   Författare :Roghayeh Abbasiverki; Anders Ansell; Jan Laue; KTH; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Earthquake; High-frequency; Underground; Pipelines; Reinforced concrete; Inclined bedrock; Jordbävning; Högfrekvent; Underjordisk; Rörledningar pipelines ; Armerad betong; Lutande berggrund; Civil and Architectural Engineering; Byggvetenskap;

   Sammanfattning : Buried pipelines are tubular structures that are used for transportation of important liquid materials and gas in order to provide safety for human life. During an earthquake, imposed loads from soil deformations on concrete pipelines may cause severe damages, possibly causing disturbance in vital systems, such as cooling of nuclear power facilities. LÄS MER

7. 35. Läkaren, döden och brottet : Studier i den svenska rättsmedicinens etablering

   Författare :Tony Gustafsson; Karin Johannisson; Torbjörn Gustafsson Chorell; Eva Åhrén; Uppsala universitet; []
   Nyckelord :History of science and ideas; history of medicine; forensic medicine; medico-legal practice; autopsy practice; scientific institutionalization; professionalization; medicalization; August Timoleon Wistrand; Alfred Hilarion Wistrand; Fredrik Theodor Berg; Anders Retzius; Idé- och lärdomshistoria; idé- och lärdomshistoria; History Of Sciences and Ideas;

   Sammanfattning : This dissertation investigates the long historical process leading up to the establishment of Swedish forensic medicine in the middle of the 19th century. Both the development of the practice of investigating suspicious deaths, primarily through autopsies, and the scientific development, leading up to the founding of forensic medicine as a medical discipline and a distinct field of knowledge are dealt with. LÄS MER