Einrichtungen zur praxisnahen und wissenschaftlich exakten Messung von Sorptionseigenschaften von Holz und Holzwerkstoffen

Summary At the Institute for Wood Research and Wood Technics of the University of Munich extensive scientific sorptionmeasurements will be carried out for which two special measuring devices have been developed which are described in this paper.

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Mitteilung aus dem Institut für Holzforschung und Holztechnik der Universit?t München

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Die Mittel zum Bau beider Sorptionsme?einrichtungen wurden in gro?zügiger Weise von der Deutschen Forschungsgemeinschaft zur Verfügung gestellt, wofür unser besonderer Dank bezeugt sei.     

Die Untersuchung und Beurteilung von Milch- und Rahmschokolade

Ohne ZusammenfassungMitteilungaus dem Nahrungsmittel-Untersuchungsamtder Landwirtschaftskammer für die Provinz Brandenburg in BerlinUnter analytischer Mitwirkung von Frl. Dr. Blum und Dr. F. Amonn.     

Zur Berechnung und Konstruktion von Verbundelementen und Verbundmaterialien

The paper reports on design methods for 3-layered sandwich elements and for a new textile sandwich core material made of conoid structures. Regarding the structural design of sandwich elements the transferability of a less or more modified DIN 1052 design of timber compound beams is emphasized. Concerning the new core material the calculation of shear and Young's moduli of an equivalent core continuum by means of the membrane shell theory and the FEM is shown. The paper finishes with the disclosure of design items of a new, patented steel-timber-compound construction.     

Zur Berechnung und Konstruktion von Verbundelementen und Verbundmaterialien

Ohne Zusammenfassung     

Verwertung von Zwangsnutzungen— Technik und Ökonomie der Langzeitlagerung von Stamm- und Schnittholz

By case studies about longtime storage, irrigation of log wood and dry storage of sawn wood, some alternatives for the economic use of emergency exploitations are analysed. The problem of the contribution to cost covering is elucidated from the standpoints of sawyers forest owners and other people, who must use such special wood storage. Furtheron, the development of costs and profits of the alternative activities is analysed. The relatively best strategy is questioned, to convert log wood, or without longtime storage, into saleable timber. Under certain preconditions with respect to price and profit development, preference must be given to the “irrigation and sawing on request” as against “sawing and dry storage”. The longtime storage of log wood offers, at least for some years, a contribution to cost covering, whereas the longtime storage of sawn timber, in advance leads into red figures. The data given here are only valid for the conditions of the case studies.     

Zur Berechnung und Konstruktion von Verbundelementen und Verbundmaterialien

Ohne Zusammenfassung The online version of the original article can be found at     

Formaldehydemission von Lagenholz und Verbundplatten

For determination of formaldehyde release from plywood and composite boards test procedures applied for the testing of particleboard were examined. The formaldehyde content determined by perforator method permits conclusions to be drawn as to the expected formaldehyde relese. The corresponding correlation is given, the result of comparative examinations of plywood and composite boards from different manufacturers proves that the use of suitable urea formaldes adhesives and special hardeners and upon consideration of some technological pecularities, these materials can certainly be produced with a formaldehyde emission ≦0.1 ppm for their favoured use in furniture manufacturing.     

Untersuchung und Begutachtung von Wurst

Ohne ZusammenfassungMitteilung aus der Hygienischen-chemischen Untersuchungsstelle des 21. Armee-Korps.     

Unterscheidung von Wein- und Spritessig

Ohne Zusammenfassung     

Chloren und Entchloren von Trinkwasser

Ohne Zusammenfassungbedeutet mit Abbildungen.     

Isolierung und Charakterisierung von Organosolv-Ligninen

Ohne Zusammenfassung     

Zugfestigkeit und Biege-E-Modul von Fichten-Brettlamellen

More than 500 radomly selected sections of spruce laminates with an average cross-section of 30 mm×140 mm were tested to evoluate the relationship between parallel to grain tensile strength and flatwise MOF, in bending. The effect of the loading direction during the bending test, the effect of moisture content. Specific gravity, knot ratio, grain angle, cross section and the effect of finge-joints upon this relationship is investigated. The results indicate that the reliability of commercial MSR systems which operate by measuring the stiffness of the specimen is low when applied to finger-jointed laminates.