Sökning: "substance displacement"
Visar resultat 1 - 5 av 6 avhandlingar innehållade orden substance displacement.
1. Novel Psychoactive Substances : Experienced effects, attitudes, and motivations among online drug community users
Sammanfattning : The aim of the present research is to contribute to the bridging of the knowledge gap pertaining to the field of Novel Psychoactive Substances (NPS) and its online community of users. The findings demonstrate that the community is characterized by robust group cohesiveness and counter public attitudes. LÄS MER
2. Fibre-Optic Displacement and Temperature Sensing Using Coupling Based Intensity Modulation and Polarisation Modulation Techniques
Sammanfattning : Optical fibre sensors are employed in the measurements of a number of different physical properties or for event detection in safety and security systems. In those environments which suffer from electromagnetic disturbance, in harsh environments where electronics cannot survive and in applications in favour of distributed detection, fibre-optic sensors have found natural areas of use. LÄS MER
Sammanfattning : This thesis consists of four empirical essays. The first essay evaluates the impact on crime of a large scale experimental scheme in which all state monopoly alcohol stores in selected Swedish counties kept open on Saturdays. We show that the experiment significantly raised both alcohol sales and crime. LÄS MER
Sammanfattning : The thesis discusses the two most common injuries to the anterior cruciate ligament (ACL) in children: The rupture in the substance of the ACL and the anterior tibial spine (ATS) fracture. The latter is an avulsion fracture of the tibial attachment of the ACL. The injuries and their treatment are studied in two clinical papers. LÄS MER
5. Improved selectivity in kraft cooking through changesin the cooking liquor concentration profiles
Sammanfattning : In the production of bleached kraft pulp, extendeddelignification in the cooking stage is a method of reducingthe load on the receiving waters. A low lignin content (lowkappa number) also means a reduced need for bleachingchemicals. LÄS MER