Homogeneous charge compression ignition (HCCI) is more efficient and produces significantly less NOx emissions compared to spark ignitions. Using an exhaust recompression strategy to achieve HCCI, however, produces cycle-to-cycle coupling which makes the problem of controlling combustion phasing more difficult. In the past, a linear feedback controller designed with a single linearized model is ef

The aerosol size distribution in 11 dwellings was measured using an electrical mobility analyser (TSI 3030). Large variations in the aerosol concentration, e.g. in connection with cooking and smoking were detected both within a single dwelling and between different dwellings. A typical size distribution shows an area median diameter of 0.2 µm with a geometrical standard deviation of about 2. Varia

Poland's entry into Baltic politics in 1918 was a challenge to traditional Swedish foreign policy. Both Germany and Russia had been significantly weakened because of the Great War and Sweden had to find a new role in the face of the successor states, among them Poland. An analysis of contemporary diplomatic reports and travellers' reports shows that Swedish politicians and diplomats did not consid

Popular Abstract in Swedish Det mesta i min avhandling handlar om utveckling av uppreningsprocesser i läkemedelsindurstin. Den stora kostnaden för läkemedelsföretagen ligger oftast inte i att producera ett läkemedel, utan att ta fram en produkt. Det är också långt ifrån alla kandidater till läkemedel som till slut blir en produkt. Detta kan till exempel bero på att kandidaten inte var tillräckligtIn my thesis, I have modeled adsorption chromatography and simulated, calibrated, and analyzed models of adsorption chromatography. While my main focus has been modeling and calibration of the models by estimating the parameters, the models used have been partly new. The simulations are differentiated from the modeling in that the modeling describes the partial differential algebraic equation, whi

13 kvinnoröden från sent 1700-tal till tidigt 1900-tal i Sverige. Vi möter kvinnor från olika samhällsklasser, vissa framgångsrika och andra som varit låsta i patriarkala strukturer.

This article outlines an experimental and numerical study on the pozzolanic interaction limits for carbonation of silica fume concretes. For this purpose cylinders of 8 types of High-Performance Concrete were cast. Carbonation and weight losses were studied parallel. An indirect method was used to measure carbonation; i.e. carbonation shrinkage was observed. The age of concrete at start of carbona

The strong process forces arising during high-speed machining operations, combined with the limited stiffness of industrial robots, have hampered the usage of industrial robots in high-end milling tasks. However, since such manipulators may offer flexible and cost-effective machining solutions, a three-dimensional piezo-actuated compensation mechanism, which aims to compensate for the positioning

Based on static outdoor channel measurements we evaluate the influence of a vehicle on the MIMO radio channel, from a base station antenna array, to a multiple antenna handset in the hand of a user placed inside a test car. The measurement scenario is chosen to mimic a 2.6 GHz (LTE) macro-cell urban or rural scenario with two locations and orientations of the car, one at an open parking lot with a