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The main objective of this thesis was to identify methods for the detection of ß-lactam resistance in staphylococci, bacteria often causing nosocomial infections. Detection of ß-lactam resistance in these species is difficult due to strong regulation of genes encoding for the two main resistance mechanisms, ß-lactamase production and the penicillin-binding protein (PBP) 2?. ß-lactamase has high af
A super-regenerative oscillator to be used as a receiver for ultra wideband impulse radio signals is demonstrated for the V-band (50-75 GHz). The study is based on experimental and simulated results using a gated tunnel diode based super-regenerative oscillator, which is used as the core of a super-regenerative receiver. Simulated pulse error rates for an impulse radio signal that is modulated by
Sex allocation is an important field in evolutionary biology, both historically and currently. However, while sex allocation theory has successfully predicted sex ratio bias in some taxa, most notably parasitic wasps, vertebrates are notorious for their poor fit to theoretical models. We argue that this arises from the use of very complex model systems to test relatively simple theoretical models.
There is an increasing challenge for chemical industry and research institutions to find cost-efficient and environmentally sound methods of converting natural resources into fuels chemicals and energy. Catalysts are essential to these processes and the Catalysis Specialist Periodical Report series serves to highlight major developments in this area. This series provides systematic and detailed re
The article is based on a pilot study of the stories of Swedish patients having had a kidney transplant abroad. Our focus is on how people who have been transplanted abroad talk about and handles the dilemma that may arise due to the transplantation trips.
The S.T.A.R. Design Studio (Space and Terrestrial Architectural Research) studies pre-industrial habitats in i.a. Tanzania, and develops design concepts for future habitats in space in cooperation with Johnson Space Centre, Houston, Texas. In both cases our studies focus on "extreme" circumstances. Perhaps studying the conditions of a crew sealed in a capsule can better prepare us for the problems
A successful previous project E-GIS (Leonardo da Vinci programme) was implemented during 2002-2006. The objectives were to establish co-operation between European Universities and GIS users and to develop modularised courses intended for flexible learning. Ten partners from six European countries (BU, LT, NO, NL, PT, SE) participated. During the project a study program, 100 % Internet based, corre
This paper presents a practical risk analysis method for critical, large-scale IT systems in an organisation. The method is based on reliability block diagram modelling and was adapted to fit the requirements of governmental organisations and to reduce the effort required to capture complex failure behaviour. Through the use of different failure categories the risk analysis can be simplified, the
As part of systematic endeavor to Islamize the society, Iranian Islamic government has bestowed efforts to create gender-segregated public urban spaces. The gender segregation was formally enforced in public places such as schools, sport halls, swimming pools, transportation facilities, etc. in last three decades. The most recent effort of the government includes “women-only parks”, claimed to be
Two class-D RF power amplifiers consisting of CMOS inverter chains have been designed and measured. The first amplifier operates at 1GHz and has a maximum output power of 12dBm, whereas the second operates at 1.5GHz and outputs a maximum of 6dBm. The amplifiers have been characterized for use in two different polar transmitter architectures, Pulse Width Modulation by Variable Gate Bias (PWMVGB) an
