Sökning: "Ian May"

Visar resultat 1 - 5 av 47 avhandlingar innehållade orden Ian May.

1. 1. Prefabricated composite bridges : a study of dry deck joints

   Författare :Robert Hällmark; Ian May; Luleå tekniska universitet; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Bridge construction; prefabrication; monitoring; Steel Structures; Stålbyggnad;

   Sammanfattning : This thesis deals with prefabricated composite bridges in general, and prefabricated concrete deck elements with dry joints in particular.As outlined in Paper I and Chapter 2 prefabrication has several advantages over in situ construction, and has hence been discussed for decades in the construction business. LÄS MER

3. 2. Composite Bridges : Innovative ways of achieving composite action

   Författare :Robert Hällmark; Peter Collin; Ian May; Luleå tekniska universitet; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Composite action; bridges; steel; concrete; shear connectors; prefabrication; coiled spring pins; shear studs; post-installation; design guidance; Structural Engineering; Konstruktionsteknik;

   Sammanfattning : The topic of this thesis is steel-concrete composite bridges and innovative ways of achieving composite action. The typical superstructure consists of three main components: the steel girders, the concrete deck slab and the shear connectors. LÄS MER

4. 3. Design of steel piles for integral abutment bridges

   Författare :Hans Petursson; Ian May; Luleå tekniska universitet; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; integral abutment bridges; steel piles; jointless bridges; Steel Structures; Stålbyggnad;

   Sammanfattning : In 1999 research was started at Luleå University of Technology with the purpose to collect experiences from USA and UK on bridges with integral abutments and transfer the experience to Swedish conditions. Since then at least 20 integral bridges with one row of piles under each abutment have been built in Sweden and the European research project INTAB has been completed. LÄS MER

5. 4. Synthesis and evaluation of bicyclic 1,3-diols (BODOLs) as ligands for asymmetric catalysis

   Författare :Ian Sarvary; Centrum för analys och syntes; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Organisk kemi; Organic chemistry; yeast reductions; supramolecular chemistry; diethylzinc; computation; structure of Ti-diolates; diol ligands; titanates; asymmetric catalysis; asymmetric synthesis;

   Sammanfattning : Several ligands based upon 2-substituted bicyclic[2.2.2]octane-2,6-diols (BODOLs) were synthesized and evaluated in two catalytic reactions: I) the Ti(IV)-mediated catecholborane asymmetric reduction of prochiral ketones and II) as catalysts in the asymmetric addition of diethylzinc to aromatic aldehydes. LÄS MER

7. 5. Explaining Early Adoption : National Action Plans on Business and Human Rights

   Författare :Ian Higham; Jonas Tallberg; Thomas Sommerer; Mark Rhinard; David Vogel; Stockholms universitet; []
   Nyckelord :SAMHÄLLSVETENSKAP; SOCIAL SCIENCES; SAMHÄLLSVETENSKAP; SOCIAL SCIENCES; early adopters; diffusion of innovations; business and human rights; regulation; human rights; international norms; public policy; Political Science; statsvetenskap;

   Sammanfattning : Diffusion of innovations theory concerns the process by which innovations are communicated through the members of a social system. Previous research has shed significant light on how public policies diffuse across governments over time, but there is little understanding of why they diffuse. The answer may lie in the motivations of early adopters. LÄS MER