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The performance of HVAC equipment, including chillers, is continuing to be pushed to theoretical limits, which impacts the necessity for advanced control logic to operate them efficiently and robustly. At the same time, their architectures are becoming more complex; many systems have multiple compressors, expansion devices, evaporators, circuits, or other elements that challenge control design and
Hur påverkar kylan arbetsmiljön i mjölkproduktionen? De som arbetar med mjölkproduktion kan under vintern ha en mycket kylig miljö. JTI har, i samarbete med Arbetslivsinstitutet, gjort mätningar och studier kring hur kylan påverkar arbetsmiljön. JTI:'s och Arbetslivsinstitutet's mätningar visar att de största problemen med kyla observerade's för händerna i samband med spolning av golv, arbete på s
PURPOSE: To explore oxidative stress and the radical scavenger α(1)-microglobulin (A1M) in the vitreous body of human eyes with primary rhegmatogenous retinal detachment (RRD). METHODS: Levels of carbonyl groups, a marker of oxidative stress, and A1M were measured by ELISA and RIA in 14 vitreous samples derived from patients suffering from RRD, and compared with 14 samples from macula hole (MH
The papers in this volume explore the cognitive neuroscience of second language acquisition from the perspectives of critical/sensitive periods, maturational effects, individual differences, neural regions involved, and processing characteristics. The research methodologies used include functional magnetic resonance imaging (fMRI), positron emission tomography (PET), and event related potentials (
Popular Abstract in Swedish En cancerpatient kommer till sjukhuset för att genomgå en strålbehandlig. Sjukhusets personal tar bilder av patienten och identifierar tumörens placering och utbredning. Bilderna läggs in i ett datorprogram, som i sin tur simulerar en strålbehandling. Strålningsapparaten, dvs. linjäracceleratorn, har flera justerbara parametrar; strålfältets storlek, vinkeln på den infaPolymer gel dosimetry has been used since the 1990s, and several studies have shown that this detector system can be used for verification of static absorbed dose distributions in three dimensions (3D). Its unique properties, such as high resolution, normal tissue equivalence and independency of energy, field size and direction of the incident radiation, should also be advantageous for dosimetric
