- document
-
Feron, P.H.M. (author), Jansen, A.E. (author), TNO Milieu, Energie en Procesinnovatie (author)The principle and engineering aspects of the membrane gas absorption process are discussed. It is shown that membrane gas absorbers have size advantages over conventional equipment. A suitable choice of absorption liquids and membranes is necessary to achieve a workable system. Significant reductions in the energy consumption of absorption...article 1995
- document
-
van de Kar, N.C.A.J. (author), Kooistra, T. (author), Vermeer, M. (author), Lesslauer, W. (author), Monnens, L.A.H. (author), van Hinsbergh, V.W.M. (author), TNO Preventie en Gezondheid (author)Infections with verocytotoxin (VT) producing Escherichia coil have been strongly implicated in the epidemic form of hemolytic uremic syndrome (HUS). Endothelial damage plays a central role in the pathogenesis of HUS. In vitro studies have shown that VT can damage endothelial cells after interaction with its cellular receptor...article 1995
- document
-
Knook, D.L. (author), Bosma, A. (author), Seifert, W.F. (author), Instituut voor Verouderings- en Vaatziekten Onderzoek TNO (author)The relationship between vitamin A and liver fibrosis was studied with a CCl4-induced fibrosis model in rats. Depending on the time of administration, vitamin A can potentiate or reduce fibrosis: when present during CCl4-treatment parenchymal cell damage and fibrosis were enhanced, whereas vitamin A post-treatment strongly reduced fibrosis....article 1995
- document
-
Middelburg, J.J. (author), Klaver, G. (author), Nieuwenhuize, J. (author), Vlug, T. (author), Rijks Geologische Dienst (author)Carbon and nitrogen cycling in intertidal mud flat sediments in the Scheldt Estuary was studied using measurements of carbon dioxide, methane and nitrous oxide emission rates and pore-water profiles of ΣCO2, ammonium and nitrate. A comparison between chamber measured carbon dioxide fluxes and those based on ΣCO2 pore-water gradients using Fick's...article 1995
- document
-
Prins Maurits Laboratorium TNO (author), Duisterwinkel, A.E. (author), van Bokhoven, J.J.G.M. (author)A calorimetric method is described for the determination of adsorption and desorption of adsorptives that are liquid at room temperature, focussing on the sorption of water. Together with the isotherms, the sorption thermodynamics is determined in one experiment by determining the heat flow needed for generating the vapour and the heat flow...article 1995
- document
-
Seifert, W.F. (author), Bosma, A. (author), Brouwer, A. (author), Hendriks, H.F.J. (author), Roholl, P.J.M. (author), van Leeuwen, R.E.W. (author), de Thiel van-Ruiter, G.C.F. (author), Seifert-Bock, I. (author), Knook, D.L. (author), TNO Preventie en Gezondheid (author)Earlier studies have shown that retinoid administration suppresses the generation of hepatic fibrosis and stimulates its regression in normal (i.e., vitamin A-sufficient) carbon tetrachloride-treated rats. This study focuses on the possible role of a marginal or deficient vitamin A status on carbon tetrachloride-induced fibrosis. This...article 1994
- document
-
Koopal, C.G.J. (author), Bos, A.A.C.M. (author), Nolte, R.J.M. (author), Centraal Instituut voor Voedingsonderzoek TNO (author)A biosensor based on a conducting screen-printing ink for the direct amperometric measurement of glucose is described. Carbon electrode prints, containing the work, reference and auxiliary electrodes, are used as the substrate for the sensor. The active parts of the carbon ink are the redox enzyme glucose oxidase and the conducting polymer poly...article 1994
- document
-
Punt, P.J. (author), Kramer, C. (author), Kuyvenhoven, A. (author), Pouwels, P.H. (author), van den Hondel, C.A.M.J.J. (author), Medisch Biologisch Laboratorium TNO (author)Introduction of a previously identified promoter element of the Aspergillus nidulans gpdA gene (encoding glyceraldehyde-3-phosphate dehydrogenase), the so-called gpd box, into the upstream region of the highly regulated A. nidulans amdS gene (encoding acetamidase), significantly increased (up to 30-fold) the expression of the lacZ reporter gene...article 1992
- document
-
de Goeje, M.P. (author), Wapenaar, K.E.D. (author), Kunststoffen Rubber Instituut TNO (author)The possibilities and limitations of eddy current methods for the inspection of carbon fibre-reinforced plastics have been investigated. The electrical properties of these composites lead to modifications of current methods applied to metals; in particular the required frequencies are much higher, 1-30 MHz for weave and 10-500 MHz for...article 1992
- document
-
Feron, P.H.M. (author), Jansen, A.E. (author), Klaassen, R. (author), Instituut voor Milieu- en Energietechnologie TNO (author)The application of membrane technology in carbon dioxide removal was investigated for a number of different gasstreams. These gasstreams have been defined in the framework of the Dutch national programme on carbon dioxide removal and are typical of streams occurring in present and future electricity generation plants based on fossil fuels ...article 1992
- document
-
de Groot, A.P. (author), Feron, V.J. (author), Immel, H.R. (author), Centraal Instituut voor Voedingsonderzoek TNO (author)In previous studies we observed an increased incidence of hyperplasia in the epithelium of the urinary bladder of rats fed cereal-based stock diet supplemented with 6% monosodium glutamate (MSG) for 3 months. Hyperplasia was not enhanced, however, when 6% MSG was fed in a purified casein diet. Further studies have been conducted to identify the...article 1988
- document
-
Prins Maurits Laboratorium TNO (author), Ligtenstein, D.A. (author), Moes, G.W.H. (author), Kossen, S.P. (author)In order to visualize the distribution of HI-6 in the rat after iv administration, autoradiographic experiments were carried out with [14C]HI-6, labeled at the carbon of the carboxamide moiety. Autoradiography clearly confirms penetration of HI-6 into the central nervous system. Considerable radioactivity was found in the cerebrum, the...article 1988
- document
-
Gay, A.J. (author), Littlejohn, R.F. (author), van Duin, P.J. (author), Hoofdgroep Maatschappelijke Technologie Centraal Laboratorium TNO (author)FIy ash from fluidised bed combustion of bituminous coals contains carbonaceous cenospheres of several forms including thick-walled opaque, transparent with a skeletal structure and 'balloons' without skeletons. The influence on cenosphere formation of particle size, temperature, heating rate, petrographic composition, etc. is reviewed. The...article 1984
- document
-
Tulleken, C.A.F. (author), van Dieren, A. (author), Mollevanger, W.J. (author), van Eijck, P. (author), Inst. Med. Phys., TNO, Utrecht, Netherlands (author)In a group of 21 cats, the middle cerebral artery pressure (MCAP) was recorded by means of a catheter introduced into the artery at its origin, just distal to the occlusion. The effects of hypertension, hypercapnia, and hypocapnia were studied. In a group of five cats, both middle cerebral arteries (MCA) were catheterized and the pressure was...article 1978
- document
- Gezondheidsorganisatie TNO Instituut voor experimentele gerontologie TNO (author), Kruisbeek, A.M. (author) doctoral thesis 1978
- document
-
Davidse, L.C. (author), Flach, W. (author), Centrum voor Plantenfysiologisch Onderzoek Nationale Raad voor Landbouwkundig Onderzoek TNO (author)Chemicals/CAS: benomyl, 17804-35-2; carbon 14, 14762-75-5; colchicine, 64-86-8; fuberidazole, 3878-19-1; griseofulvin, 126-07-8; mebendazole, 31431-39-7; melatonin, 73-31-4; nocodazole, 31430-18-9; parbendazole, 14255-87-9; podophyllotoxin, 518-28-5; tiabendazole, 148-79-8; vinblastine, 865-21-4; Benzimidazoles; Carbamates; Colchicine, 64-86-8;...article 1977
- document
-
Davidse, L.C. (author), Werkgroep voor Inwendige Therapie van Plantenziekten TNO (author)Methyl benzimidazol 2 yl carbamate was metabolized by Aspergillus nidulans mycelium to two metabolites, one of which was identified as methyl 5 hydroxybenzimidazol 2 yl carbamate. This compound was further converted to a second metabolite which was not identified. Conversion rate was highest when the culture medium was depleted of nutrients....article 1976
- document
-
Polak, R.L. (author), Molenaar, P.C. (author), Medisch Biologisch Laboratorium TNO (author)Demethylation by sodium benzenethiolate has been used to analyse mixtures of isotopic variants of acetylcholine (ACh) by gas chromatography/mass spectrometry (GC/MS). The present experiments show that demethylation by pyrolysis is also suitable for the simultaneous determination of deuterium labelled variants of ACh by means of GC/MS. However,...article 1974
- document
- Chemisch laboratorium TNO (author) book 1973
- document
-
van den Berg, K.J. (author), Betel, I. (author), Radiobiologisch Instituut TNO (author)Chemicals/CAS: 2 amino 2 methylpropionic acid, 62-57-7; carbon, 7440-44-0; thymidine, 50-89-5; tritium, 10028-17-8; Aminoisobutyric Acids; Carbon Isotopes; Lectins; Thymidine, 50-89-5; Tritium, 10028-17-8article 1971