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Critical contamination sites and sources for the Gram-negative psychrotrophs (GNP) of the taxa Pseudomonas, Enterobacteriaceae and Aeromonas, and the Gram-positive spore-forming (GPS) species Bacillus cereus, have been traced in the production line of pasteurised milk. Samples of raw and pasteurised milk from different sampling sites along the line were collected. After incubation at 7°C until the
Abstract is not available
Constitutive models regarding the behavior of metallic materials during forming processes are formulated and implemented. Mechanisms such as phase transformation, large deformations, plastic dissipation in form of heat and viscoplastic behavior in the material is adressed.
in today’s technology generations, e.g. 90 and 65 nm, the static power consumption becomes a major contributor to the total power consumption. It is therefore important to consider all abstraction levels to reduce this power. This paper focuses on the arithmetic level and shows a methodology for a substantial reduction of the static power consumption. Both the dynamic and static power consumption
Intergovernmental collaboration in Big Science has been an important resource for European science since the 1950s, as a means to compete on global level. But interestingly, collaboration in (basic) science has traditionally been left outside of the political integration work of the European Community/Union, which has resulted in a cluttered policy field and a situation where European Big Science
Popular Abstract in Swedish Tuberkulos (Tbc) är en sjukdom som plågat mänskligheten sedan årtusenden före Kristi födelse. Bakterien som orsakar Tbc sprids från person till person företrädesvis via luftvägarna. En tredjedel av världens befolkning tros vara smittad; ca 10% av dessa utvecklar aktiv Tbc någon gång under livet. Totalt insjuknar årligen ca 8 miljoner personer i Tbc; 2 miljoner av dem döTuberculosis (TB) has plagued the humanity for several thousands of years. The bacteria causing TB is mainly spread from person to person as an aerosol transmission. It is estimated that one third of the world’s population is infected with the disease; about 10% of these will develop active TB during their lifetime. In year 2000, 8 million TB-cases were detected, of which 2 million died. Except fo
The results from this study show that both the percentage of students passing a difficult first-year engineering course, and scores on the course exams, are higher for students attending SI compared to students not attending. There is also a clear relation between SI attendance and student performance, with higher attendance leading to higher student performances. The study also shows that female
Popular Abstract in Swedish Ett beta-fosfoglukomutas i kolhydrat-metabolismen hos Lactococcus lactisPhosphoglucomutase (PGM) catalyzes the reversible conversion of glucose 1-phosphate to glucose 6-phosphate. Two distinct forms of PGM have been purifed and charactierized in Lactococcus lactis growing on maltose: one specific for the alpha-isomer, and the other specific for the beta-isomer of glucose 1-phosphate. Beta-PGM was purified and polyclonal antisera to the enzyme were generated. Beta-PGM
This thesis consists of experimental studies of the electronic of electronic structure of the transition metals Au and Pt, and the transition metal complexes, FeIn, PtLi, and AuLi in silicon. Fourier transform infrared spectroscopy, photoconductivity, uniaxial stress- and Zeeman spectroscopy are employed. The excitation spectrum of the FeIn pair in silicon is observed for the first time. Two sets
School fires are a considerable problem in many Western countries. The cost of arson in Swedish schools is over 300 million Swedish kronor per year. Since the end of the 1990s, a fire occurs on average once per day, and every second fire is an arson. Malmö is one of the most affected municipalities in Sweden. The causes of arson are difficult to elucidate but can be related to factors such as indi
Since 1990 sickness benefits have been reduced in Sweden. In this paper we use data from the labour force survey to study the introduction of a qualification day in 1993. Our main centre of interest is the distributional effects caused by this cutback, and to this end we analyse a large number of interactions between background variables and the reform dummy. Considerable attention is thus paid to
The proportion of the world’s population living in urban areas is constantly increasing. Different urban shapes result in different microclimates. The way cities are planned and built is therefore important for the global energy use. This study presents results from measurements of street climate in the city of Fez, Morocco, in contrasting traditional and modern housing areas, each with its own pr
