Filtyp
In order to characterise fires in chemical warehouses, 38 medium scale experiments have been conducted. The experiments were performed in a 0.66m3 combustion chamber. On-line measurements were made of combustion gases (CO2, CO, HC and NOx), mass loss, smoke, temperatures, external radiation and phi-values. Intermittently gas and soot samples were collected and analysed for content of organic compo
The effect of allergen challenge on the number of leucocytes and the concentration of endothelin 1-like immunoreactivity (ET-LI) in bronchoalveolar lavage fluid (BALF) was investigated in guinea-pigs sensitized to Ascaris suum. The animals were twice exposed to allergen aerosol. All animals responded to the second challenge with bronchoconstriction. Twelve hours later, a significant increase in th
Popular Abstract in Swedish Varför ser staden ut som den gör? Vilka krafter ligger bakom bebyggelsens och transportsystemets utformning? Vad eller vilka aktörer har inflytande över hur staden utformas? Hur kan internationella olikheter i städers utformning förklaras? De krafter som formar staden är många och komplexa. Stadens struktur har under historiens gång påverkats av bland annat nya teknologWhy do cities appear the way they do? What are the underlying forces that contribute to its built environment and transport system? What/whom are the factors/actors that influence the ways in which the city is shaped? How can the international differences in the shape of cities be explained? The driving forces that shape the city are numerous and complex. City structure, has through the ages, been
The neutron beam at the Studsvik facility for boron neutron capture therapy (BNCT) and the validation of the related computational model developed for the MCNP-4B Monte Carlo code are presented. Several measurements performed at the epithermal neutron port used for clinical trials have been made in order to validate the Monte Carlo computational model. The good general agreement between the MCNP c
Effects of hydrogen bonding and the axial ligand interaction on the B800 band in two LH2 complexes Rhodopseudomonas (Rps.) acidophila and Rhodospirillum (Rs.) molischianum have been theo retically investigated by using density functional theory. The local electrostatic environment of the B800 bacteriochlorophyll is simulated as an atomic charge field consisting of the pigments in the protomer unit
The present European Standard for footwear testing (EN 344) classifies footwear thermally by a temperature drop inside the footwear during 30 minutes at defined conditions. Today, other methods for footwear thermal testing are also available. The aim of this study was to compare EN 344 with thermal foot method. Six boots were tested according to both methods. Additional tests with modified standar
We have reviewed 184 patients after repair of primary hypospadias. They were operated on and followed-up according to a standard protocol, and the senior author (HS) participated in all operations. The patients were reconstructed using a Byars two-stage procedure ( n = 102) or a Scuderi ( n = 29) or Mathieu ( n = 41) single-stage procedure. The rest ( n = 12) just had a removal of the chordee with
Osteopenia/osteoporosis affect many elderly people and might not be detected until symptoms of fractures occur. Early detection of osteopenia/osteoporosis is important and would allow preventive measures and treatment. Access to screening for osteopenia/osteoporosis is often limited, whereas panoramic radiography is commonly used in dentistry. The aim of this study was to determine the validity of
The development of a cell therapy for the neurodegenerative disorder Parkinson's disease is a realistic ambition. It is pursued by researchers and companies alike, and spans different donor tissue types of embryonic, fetal and adult origins. In this review, we briefly outline the past and current status of research and clinical trials with cell transplantation in Parkinson's disease. We discuss st
A linear quadratic stochastic control problem is considered. The problem involves several different controllers acting as a team, but with access to different measurements. Under appropriate assumptions on communication delays between the controllers, a quadratic control objective can be optimized using finite-dimensional convex optimization. Versions of this problem has been discussed in economic
Objectives/Hypothesis: The upper respiratory tract is involved in many acute and chronic respiratory tract diseases that present with the symptom of mucus hypersecretion. Mucin genes that encode for the backbone of glycoproteins contribute to the viscoelastic property of airway mucus. We examined the cellular expression and distribution of two major respiratory mucus-forming glycoproteins, MUC5AC
Fuel ethanol can be produced from lignocellulosic materials to replace gasoline and diesel. A crucial step in the production process is the hydrolysis (saccharification) of the material, which can be achieved with dilute acid at high temperature. Unfortunately, sugar is degraded under these severe conditions, and the sugar yield is generally low. This thesis deals with countercurrent operation, wh
This study tests the hypothesis that Fourier-transform infrared spectroscopy (FTIRS) of lake sediments can be used to infer past changes in tree-line position and total organic carbon (TOC) content of lake water. A training set of 100 lakes from northern Sweden spanning a broad altitudinal and TOC gradient from 0.7 to 14.9 mg/l was used to assess whether vegetation zones and TOC can be modelled fr
