(1 - 20 of 2,106)

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de Haas, J.H. (author), Nederlands Instituut voor Praeventieve Gezondheidszorg TNO (author)
Bij de oprichting van de Gezondheidsorganisatie c'.N.O. in 1950 bestond in ons land de paradox van relatief goede resultaten op sociaal-hygienisch ge­bied en een beperkte wetenschappelijke basis van de sociale hygiene. Het is de taak van de Gezond­heidsorganisatie T.N.O .. deze basis te verbreden. Bij uitvoering van de onderzoekingen en...
article 1954
document
de Haas, J.H. (author), Nederlands Instituut voor Praeventieve Gezondheidszorg TNO (author)
The comparison between pediatrics in East and West and in neighbouring countries is called geographical pediatrics, iqaccordance with the term Geographical Pathology. Difference in place is actually rather a difference in time. Inevitably the study of child life in the tropics is still based on Western principles. Medical thinking based on...
article 1954
document
de Haas, J.H. (author), Nederlands Instituut voor Praeventieve Gezondheidszorg TNO (author)
bookPart 1954
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de Haas, J.H. (author), Nederlands Instituut voor Praeventieve Gezondheidszorg TNO (author)
An orientation of modern child care viewed in the light of the trend in Scandinavia and the Netherlands places the following concepts before us. Now that infant mortality has reached a level of twenty per thousand births, we have arrived at an important point in the development of child care. This fact forces us not only to form an impression of...
article 1958
document
de Haas, J.H. (author), Nederlands Instituut voor Praeventieve Gezondheidszorg TNO (author)
article 1960
document
Böttcher, C.J.F. (author), Klynstra, F.B. (author)
article 1963
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Walraven, P.L. (author), Instituut voor Zintuigfysiologie TNO (author)
THE Stiles–Crawford effect1,2, or the dependence of luminous efficiency on the eccentricity of the point of entry of the light in the pupil, is a function of the wavelength of the light. In Fig. 1 is given the inverse 1/ of the luminous efficiency as a function of wave-length at a distance of 3.5 mm from the point of maximum efficiency,...
article 1966
document
Bleichrodt, J.F. (author), van Abkoude, E.R. (author), Medisch Biologisch Laboratorium TNO (author)
If cells of the bacterium Escherichia coliC infected with bacteriophage φX174 are lysed artificially in the cold, the phage obtained is relatively heat resistant at temperatures around 65° and unable to adsorb to host cells at 4°. At 37° the phage particles become more thermolabile with respect to inactivation at 65° and, concomitantly, obtain...
article 1967
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Vos, J.J. (author), Walraven, P.L. (author), Instituut voor Zintuigfysiologie TNO (author)
To derive the fundamental response curves for the three colour mediating systems from the location of the dichromatic confusion centres, one must make certain assumptions on the nature of dichromatism. It is shown, however, that one can avoid to make specific quantitative assumptions by bringing into the picture other visual data, such as the...
article 1971
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Bouman, M.A. (author), Walraven, P.L. (author), Instituut voor Zintuigfysiologie TNO (author)
On the basis of measurements of the achromatic zone for red light in the fovea and for green light in the periphery, a discussion is given on the possible difference in threshold mechanisms for the achromatic (scotopic) and chromatic (photopic) retinal systems. A specific suggestion for this distinction is given that not directly refers to the...
article 1972
document
Bunt, A.A. (author), Sanders, A.F. (author)
An experiment is reported on the effects of cognitive similarity on proactive and retroactive interference (PI, RI) in short term memory. To avoid confounding between cognitive and acoustic similarity, the materials - i.e. words and digits - were matched with respect to vowel pattern. Effects of both PI and RI were found on recall of words,...
article 1972
document
Zeedijk, H.B. (author), Metaalinstituut TNO (author)
Asbestos bodies and asbestos fibers were found in the lungs of a mesothelioma patient and analysed by electron microscopy. The bodies were normal asbestos bodies with amphibole-asbestos fibers as kernels. The free asbestos fibers, present in the lungs, mainly were chrysotile-asbestos. © 1973 Springer-Verlag. Chemicals/CAS: asbestos, 1332-21-4;...
article 1973
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Walraven, P.L. (author), Instituut voor Zintuigfysiologie TNO (author)
On the basis of new experimental data of tritanopic vision the convergence centre for tritanopia has been redetermined, and has turned out to bex' = 0.1747,y' = 0.0060 in the Judd 1951-chromaticity diagram. A consequence of this determination is that the blue system is more sensitive than was concluded from the Thomson-Wright (1953) study. The...
article 1974
document
Germans, F.H. (author), Koster, M.W. (author), Kwee, H.H. (author), Groep Motoriek Revalidatie, Medisch Fysisch Instituut TNO Instituut voor gezondheidstechniek TNO (author)
The merits of the 'vacuum form fixation' are discussed for the production of reliable body impressions of patients suffering from sitting problems. Impressions are taken with the patients seated in the desired posture. The first results are reported, obtained from 4 patients of different categories, fitted with individually moulded seats...
article 1974
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Gaillard, A.W.K. (author), Trumbo, D.A. (author), Instituut voor Zintuigfysiologie TNO (author)
The effects of an amphetamine and a barbiturate on heart rate were investigated during long term performance. Subjects worked for three hours in a serial reaction test, which included blocks with variable or constant interstimulus intervals (ISI). Besides the interbeat interval (IBI), derived from the successive R peaks of the ECG, the...
article 1976
document
Bunt, A.A. (author)
Thirty-two subjects had tests of serial recall of visually presented nine-digit lists which were either presented in a single block of trials (constant context) or in between lists of much longer length (variable context). Other variables were vocalization-during-presentation versus silent memorization (within subject) and order of recall ...
article 1976
document
Jonkman, E.J. (author), Mosmans, P.C.M. (author)
other 1977
document
van der Waaij, D. (author), Vossen, J.M. (author), Korthals Altes, C. (author), Hartgrink, C. (author), Radiobiologisch Instituut TNO (author)
Antibiotic decontamination of the digestive tract can suppress or eliminate all microorganisms in this tract that are sensitive to the antibiotics used for decontamination. Experimental work in animals has indicated that colonization resistance (CR) decreases to extremely low values during decontamination as a result of the suppression of the...
article 1977
document
Kluft, C. (author), Jenks, R.L. (author), Astrup, T. (author), Gaubius instituut TNO (author)
The authors studied the production of fibrinolytic activity in Hageman trait plasma, and conclude that the development of activator activity in euglobulin fractions is delayed, particularly in the Hageman trait plasma, by the presence of C1 inactivator, an inhibitor whose effect can be abolished by the synthetic compound flufenamic acid. Using...
article 1977
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von Lossonczy, T.O. (author), Ruiter, A. (author), Bronsgeest-Schoute, H.C. (author), van Gent, C.M. (author), Hermus, R.J.J. (author)
A cross-over study was done with 19 male and 23 female volunteers living in a monastery and a convent, respectively. The effect of a fat fish (mackerel) diet on the blood serum lipid composition was studied. As the normal diet of these volunteers was of the lacto-ovo-vegetarian type, a control diet in which the fish was replaced by full-fat...
article 1978
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