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Kluyver, A.J. (author), Visser, J. (author)
1. A method has been developed for testing the filtration efficiency of some filter materials. For each of the materials investigated — cotton wool, stillite and carbon — a suitable filter has been devised. 2. The filtered air was analyzed as to its germ content with the aid of a set of 3 capillary impingers. 3. The cotton wool filter gave on...
journal article 1950
document
Visser, J. (author)
Document(en) uit de collectie Chemische Procestechnologie
report 1950
document
Visser, W. (author)
Document uit de collectie Chemische Procestechnologie
report 1947
document
Visser, B. (author)
This study aims at aiming an insight into the rainfall in the Netherlands with regard to the determination of the desirable capacity of draining-mills. With this end in view a statistical investigation has been made of the data of the daily quantities of rain during the years 1890 up to 1939 inclusive, at Boskoop, Leeghwater and Hoorn. First of...
doctoral thesis 1947
document
De Jonge, D. (author), Hillenius, D. (author), De Kreuk, M. (author), Visser, A. (author), Janmaat, H. (author), , P. Penning (author)
report 1944
document
Visser, G.H. (author)
doctoral thesis 1932
image
Visser, G.H. (author)
Document(en) uit de collectie Chemische Procestechnologie.
technical drawing 1927
image
Visser, G. (author)
Document(en) uit de collectie Chemische Procestechnologie.
technical drawing 1924
image
Visser, C. (author)
Document(en) uit de collectie Chemische Procestechnologie
technical drawing 1924
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