The molecular fingerprinting technique (PCR-DGGE) of microbial populations was successfully adopted for soilless culture systems. Relatively low concentrations of microorganisms in the nutrient solutions could be assessed. PCR-DGGE was applied in several experiments to compare the composition and diversity of the bacterial populations in different treatments, as well as at different locations a...

Samples of rockwool and glass fibre were compared with chrysotile fibres for their capacity to hydroxylate 2-deoxyguanosine to 8-hydroxydeoxyguanosine, a reaction that is mediated by formation of hydroxyl radicals. All three fibres produced 8-hydroxydeoxyguanosine in the absence of H2O2. The chrysotile fibres were most potent and produced about ten times more of the modified nucleoside than roc...

A preliminary study at the institut National de l'Environnement Industriel et des Risques (INERIS) examined the dissolution of three man-made vitreous fiber samples (glasswool, rockwool, glass microfibers: JM 100) after intraperitoneal injections in male Wistar rats. The chemical composition of the original fibers was determined by inductively coupled plasma spectrometry (ICP). The urine of the...

The advantages of Arabidopsis thaliana (L.) Heynh. for genetic studies are well known, but its diminutive stature and associated low biomass at maturity make it a challenging species for complementary physiological and biochemical studies. Hydroponic culture can significantly increase plant growth and produce uniform, stress-free root and shoot material that can be harvested throughout the life...

Pulmonary fibrosis is thought to be a common complication of exposure to asbestos dust. The inhaled asbestos fibres are supposedly not transported by the pulmonary lymphatics, and thus one single massive exposure might lead to the same stage of fibrosis as a prolonged but less intense exposure. This industrial hazard has led to the search for substitutes for asbestos in insulation work, and at ...

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Due to increase in the number of goods carrying tricycles, the amount of noise and pollution on our roads has increased. To optimize the control of the engine noise emission for tricycle, different absorptive material liners have been introduced into muffler design. In this study, the performance of Aerogel, Ceramic, Kenaf fibre, Polyester and Rockwool as absorptive material liners on the trans...

Introduction In Scandinavian Political Studies (1994,83-88), Professors Peter Nannestad and Martin Paldam (hereafter “NF”’) reviewed my little monograph -just an extended essay really titled Solidarity or Egoism? The Economics of Sociotropic and Egocentric Influences on Political Behaviour: Denmark in International and Theoretical Perspective (Aarhus University Press for the Rockwool Foundation...