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623 results on '"de Bruijn J"'

154. Een vreemde man, en die ons vreemd ontviel

Author

de Bruijn, J., Lokin, J.H.A., van Soest-Zuurdeek, L.J., (red.) Zwalve, W.J., Constitutional and Administrative Law, and Non-programmatic Research - Law

Published
2000

157. Kavafis speelt verstoppertje

Author

Hokwerda, H., de Bruijn, J, Lokin, J.H.A., van Soest-Zuurdeek, L.J., and Zwalve, W.J.

Published
2000

165. Kuypers Dogmatic Theology

Author

van Egmond, A., van der Kooi, C., de Bruijn, J., Faculty of Religion and Theology, and Church History

Published
1999

166. Groen and Kuyper on the racial issue

Author

Kuiper, D.Th., de Bruijn, J., van der Kooi, C., Sociology and Social Gerontology, and Research Programmes - Social Sciences

Published
1999

172. Abraham Kuyper as a Romantic

Author

de Bruijn, J., Constitutional and Administrative Law, and Non-programmatic Research - Law

Abstract

Het artikel werd (in het Nederlands) ook gepubliceerd in Trouw van 17, 18, en 23 juni 1998, in drie afleveringen met als titels: 'een romantische pose van echte vroomheid', 'Kuyper en Van Eeden: Koninklijken van geest' en 'Een aansteller, een dominee, een operazanger'.

Published
1999

175. Calvinisme

Author

de Bruijn, J., Divendal, Joost, Constitutional and Administrative Law, and Non-programmatic Research - Law

Published
1998

176. Een lastige erfenis? Kerkelijke archieven van de twintigste eeuw

Author

de Bruijn, J., Holtrop, P.N., Woelderink, G., Constitutional and Administrative Law, and Non-programmatic Research - Law

Abstract

Referaten van het symposium, op 21 en 22 maart 1997 gehouden in het conferentie-oord Woudschoten te Zeist

Published
1998

179. Abraham Kuyper

Author

de Bruijn, J., Puchinger, G., Harinck, G., Paul, H., and Wallet, B.

Published
1998

186. Historical collections

Author

Sosef, M.S.M. and de Bruijn, J.

Subjects
Biosystematiek-Diertaxonomie, Life Science
Published
1996

187. European Union system for the evaluation of substances The second version

Author

Dolan, Brian [0000-0003-0138-5662], Attias, L., Boccardi, P., Boeije, G., Brooke, D., De Bruijn, J., Comber, M., Dolan, Brian, Fischer, S., Heinemeyer, G., Koch, V., Lijzen, J., Müller, B., Murray-Smith, R., Rikken, M., Tadeo Lluch, José Luis, Vermeire, T., Dolan, Brian [0000-0003-0138-5662], Attias, L., Boccardi, P., Boeije, G., Brooke, D., De Bruijn, J., Comber, M., Dolan, Brian, Fischer, S., Heinemeyer, G., Koch, V., Lijzen, J., Müller, B., Murray-Smith, R., Rikken, M., Tadeo Lluch, José Luis, and Vermeire, T.

Abstract

This publication presents major changes in the assessment of the risks of chemicals to human health and the environment as implemented in the second version of the European Union System for the Evaluation of Substances, EUSES 2.0. EUSES is a harmonised quantitative risk assessment tool for chemicals. It is the PC-implementation of the technical guidelines developed within the framework of EU chemical legislation for industrial chemicals and biocides. As such, it is designed to support decision making by risk managers in government and industry and to assist scientific institutions in the risk assessment for these substances. The development of EUSES 2.0 is a co-ordinated project of the European Chemicals Bureau, EU Member States and the European chemical industry. Several model concepts, the technical background and the user interface of EUSES have been improved considerably. Major changes in the environmental assessment such as the implementation of emission scenario documents for industrial chemicals and biocides, the addition of the marine risk assessment, the enhancement of the regional model to include global scales, and improvements in the secondary poisoning and environmental effects modelling will be discussed. The update of the human risk assessment module in EUSES focuses on the risk characterisation for both threshold and non-threshold substances with, among others, the introduction of assessment factors. The performance of EUSES is illustrated in an example showing the human and environmental risk assessment of a sanitation disinfectant for private use. © 2005 Elsevier Ltd. All rights reserved.

Published
2005

197. Influence of Crystal Structure on the Establishment of the Bone-Calcium Phosphate Interface In Vitro

Author

de Bruijn, J. D., Klein, C. P. A. T., de Groot, K., and van Blitterswijk, C. A.

Subjects
plasma spray, Calcium phosphate, osteoblast, hydroxyapatite, interface, in vitro, mineralization, Biomedical Engineering and Bioengineering, bone formation
Abstract

An in vitro rat bone marrow cell system was used to examine the interfacial ultrastructure established between various calcium phosphates and mineralized tissue. The investigated calcium phosphates comprised hydroxyapatite (HA), fluorapatite (FA), tricalcium phosphate (TCP), tetracalcium phosphate (TECP) and magnesium whitlockite (MWL). Both scanning and transmission electron microscopy were used to examine the elaborated interface. The time in which a mineralized extracellular matrix was formed on the various materials differed from 2 weeks on HA, TCP and TECP, to 8 weeks on FA. It was only occasionally observed in some areas on MWL, which might have been due to aluminum impurities in the coating. With transmission electron microscopy, three distinct interfacial structures were observed. They differed in the presence or absence of a collagen free, 0. 7 to 0. 8 J.Lm wide, amorphous zone and a 20 to 60 nm thick electron dense layer , interposed between the material surface and the mineralized extracellular matrix. The electron dense layer was considered to be at least partially caused by protein adsorption , which would precede or concur with biological mineralization events , while the amorphous zone was regarded to represent partial degradation of the calcium phosphate surfaces. The results of this study show that plasma sprayed calcium phosphates will display different bone-bonding and biodegradation properties , depending on their chemical composition and crystal structures .

Published
1993

199. The Effect of Substratum Roughness on Osteoclast-like Cells In Vitro

Author

Gomi, K., de Bruijn, J. D., Ogura, M., and Davies, J. E.

Subjects
cell culture, synthetic hydroxyapatite, Osteoclasts, resorption, Biomedical Engineering and Bioengineering
Abstract

Calcium phosphate powders were used to produce three groups of experimental substrata for the culture of primary rat bone marrow cells in conditions which permitted the survival and function of osteoclasts. Each of the three experimental groups were subdivided by differences in substratum surface roughness and following a culture period of 7 to 11 days, the culture units were stained for tartrate-resistant acid phosphatase activity. In all samples both small, sometimes mononuclear, and large multinucleate cells stained positive for tartrate-resistant acid phosphatase activity and the numbers and types of cells were quantified and statistically analyzed. Following histochemical staining the samples were dehydrated and gold coated for examination by scanning electron microscopy. Cells were found to create distinct resorption lacunae in most substrata, but not on the dense, high temperature sintered hydroxyapatite, and cells responsible for this activity were confirmed as exhibiting positive tartrate resistant acid phosphatase activity. Statistical analyses showed that both the total number of tartrate-resistant acid phosphatase positive cells and the number of multinucleate tartrate-resistant acid phosphatase positive cells was greater on the rougher than the smoother surfaces.

Published
1993

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