Initial studies on the influence of Aspergillus niger on the wood components of Populus sp. An attempt was made to determine the content of structural substances (cellulose, holocellulose, lignin) and non-structural substances in poplar wood (Populus sp.) infected with the mentioned fungus. For this purpose, wood chips were infected with spore suspension and then incubated under sterile and suitable growth conditions. After 7, 14 and 21 days the degree of poplar wood degradation was assessed by determining the substances contained in the wood by performing chemical analyses: Kürschner-Hoffer cellulose, holocellulose by the sodium chlorite method, lignin in accordance with PN-92/P50092 standard and non-structural components. The conducted analyses made it possible to determine the effect of Aspergillus niger’s presence time on the degree of degradation of individual wood components.
In furniture design, understood as a kind of evolutionary process, there is room for designer’s
creativity, but not in the sense traditionally accepted in the psychology of creation. The creativity of the designer
shapes the products of the evolutionary algorithm but does not replace them. This can be illustrated by the
genesis of any design, such as furniture that stimulates the development of the child. The Montessori pedagogy
leaves a lot of room for new designs of Montessorian teaching aids. The Montessori didactic material forms a
logically structured whole. It enables the child to move out of experience and sensual cognition; it serves not
only the development of the intellect but also the education of the whole personality. The Montessorian materials
take into account the child’s stage of development, corresponding to a given sensitive phase and the very logic of
things, so that the child, while learning, can embrace larger cognitive sequences, arouse a sense of aesthetics,
motivation, curiosity and interest, thus triggering various forms of activity.
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