Searched for: subject%3A%22Colorimetry%22
(1 - 9 of 9)
document
Breeveld-Dwarkasing, V.N.A. (author), te Koppele, J.M. (author), Bank, R.A. (author), van der Weijden, G.C. (author), Taverne, M.A.M. (author), Dissel van - Emiliani, F.M.F. (author), Gaubius Instituut TNO (author)
The objective of the present study was to assess if cervical ripeness could be quantified by measuring the percentage of denaturation of the collagen network of the stromal layer. Biopsy specimens from the caudal part of the cervix were obtained from nine pluriparous cows between Days 149 and 157 of gestation (second-trimester biopsy), at...
article 2003
document
Fidder, A. (author), Hulst, A.G. (author), Noort, D. (author), de Ruiter, R. (author), van der Schans, M.J. (author), Benschop, H.P. (author), Langenberg, J.P. (author), Prins Maurits Laboratorium TNO (author)
In this paper a novel and general procedure is presented for detection of organophosphate-inhibited human butyrylcholinesterase (HuBuChE), which is based on electrospray tandem mass spectrometric analysis of phosphylated nonapeptides obtained after pepsin digestion of the enzyme. The utility of this method is exemplified by the positive analysis...
article 2002
document
de Groot, J. (author), Verzijl, N. (author), Wenting-Van Wijk, M.J.G. (author), Bank, R.A. (author), Lafeber, F.P.J.G. (author), Bijlsma, J.W.J. (author), Tekoppele, J.M. (author), Gaubius Instituut (author)
Objective. Progressive destruction of articular cartilage is a hallmark of osteoarthritis (OA) and rheumatoid arthritis (RA). Age-related changes in cartilage may influence tissue destruction and thus progression of the disease. Therefore, the effect of age-related accumulation of advanced glycation end products (AGEs) on cartilage...
article 2001
document
Braakhuis, B.J.M. (author), Welters, M.J.P. (author), Cloos, J. (author), Pankras, J.E. (author), Smeets, S.J. (author), Fichtinger-Schepman, A.-M.J. (author), Centraal Instituut voor Voedingsonderzoek TNO (author)
The aim of the present study was to investigate how normal head and neck epithelial cells (NHNEC) respond to cisplatin compared to their neoplastic counterparts with respect to intracellular platinum (Pt) levels and growth inhibition. A colorimetric assay was used to assess growth inhibition after exposure to cisplatin for 72 h. Growth...
article 1999
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Gaubius Instituut TNO (author), Verheijen, J.H. (author), Nieuwenbroek, N.M.E. (author), Beekman, B. (author), Hanemaaijer, R. (author), Verspaget, H.W. (author), Ronday, K.H. (author), Bakker, A.H.F. (author)
We describe a new principle for assessment of the activity of proteolytic enzymes of all classes and show the application of this principle for the quantitative assay of bacterial collagenase and human matrix metalloproteinases (MMPs). Central to this new principle is the presence of a proenzyme that can be activated into an active enzyme by a...
article 1997
document
Walraven, J. (author), Werner, J.S. (author)
The locus of unique white was measured for two observers over a wide range of stimulus intensities, using both direct matching and absolute judgements. Chromaticity coordinates of each observer's unique white were found to be invariant over a range of about 4 log units. This result is discussed in the context of the class of models that explain...
article 1991
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Vos, J.J. (author), Estevez, O. (author), Walraven, P.L. (author), Instituut voor Zintuigfysiologie TNO (author)
New action spectra are derived for the foveal cones on the basis of three assumptions: (1) the Stiles-Burch (1959) colorimetric data are better than CIE 1931; (2) the long wavelength flanks of the dichromatic luminosity functions offer better anchorage than the confusion loci; and (3) the relative mutual heights per receptor can be derived from...
article 1990
document
Centraal Instituut voor Voedingsonderzoek TNO (author), Speek, A.J. (author), Schrijver, J. (author), Schreurs, W.H.P. (author)
Chemicals/CAS: menadione sodium bisulfite, 130-37-0; menadione, 58-27-5; 2-methyl-1,4-dihydronaphthalene, 2717-43-3; Naphthalenes; Vitamin K 3, 58-27-5; Vitamin K, 12001-79-5.
article 1984
document
Gaubius instituut TNO (author), van Gent, C.M. (author), van der Voort, H.A. (author), de Bruyn, A.M. (author), Klein, F. (author)
Two enzymatic methods for the determination of cholesterol in serum have been modified for automatic use. These methods utilize the colour reactions according to Kageyama or Trinder to measure the hydrogen peroxide resulting from the enzymatic reaction. The procedures have been compared with the classical methods according to Abell and to Huang....
article 1977
Searched for: subject%3A%22Colorimetry%22
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