Full-text resources of CEJSH and other databases are now available in the new Library of Science.
Visit https://bibliotekanauki.pl

Results found: 3

first rewind previous Page / 1 next fast forward last

Search results

Search:
in the keywords:  WOOD
help Sort By:

help Limit search:
first rewind previous Page / 1 next fast forward last
1

HODNOTENIE DREVA ORGANOVÝCH PÍŠŤAL Z POHĽADU FREKVENČNÉHO SPEKTRA ZVUKU PÍŠŤAL A FYZIKÁLNO-AKUSTICKÝCH CHARAKTERISTÍK

100%
Štafura A., Nagy Š., Čulík M.
Musicologica Slovaca
|
2014
|
vol. 5 (31)
|
issue 1
88 – 114
EN
This paper aims at an experimental evaluation of the quality of the wood used in the manufacture of wooden organ pipes. For this purpose we created a stock of pipes, using various types of wood for the walls of the pipes and for the front board. Using this trial stock of pipes, we conducted a series of experimental measurements, proceeding from an analysis of the sound spectrum. It was shown that what exerts the most fundamental influence on the quality of the sound spectrum is the measure of the pipe and its intonation. This reality is confirmed by the fact that despite the use of varying materials and varied thickness of walls, under constant conditions (pressure, temperature) the resonance mode of all the pipes examined is at the same frequency. A further finding is that the material of the front board and walls may have an influence on the creation of a disturbing (humming) component of the tone of the pipe under certain conditions and circumstances, and indeed on the creation of harmonic tones. Even a small change in the original tuning of a historical pipe causes relatively marked changes in the actual sound system of the pipe. This fact has significant consequences in the field of restoring historical organs and on changes to the tuning of those instruments.
2

ICONOGRAPHIC STUDIES OF THE BAS-RELIEFS AND IVORIES BY PAUL EGELL

86%
Leibetseder S.
ARS
|
2013
|
vol. 46
|
issue 1
43 -50
EN
The Palatine court sculptor Paul Egell (1691 – 1752) was one of the outstanding artists of Southern German Rococo. Due to his fine carvings and use of precious materials, such as ivory or gilded lime wood, especially his small size bas-reliefs have always been highly estimated. Scholars as Adolf Feulner or Theodor Demmler first commented on the aesthetic values of these in the 1920s and 1930s and much research has been done since. Yet, it is a critique of style that is prevailing within the discussion of this works. Along with other questions it has not been mentioned that the iconography of his bas-reliefs is rooted within the tradition of the late medieval passion images. Therefore this essay sets its focus on Egell’s reception and development of new iconographic patterns based on medieval passion images.
3
Content available remote

UPLATNENIE DREVÍN A RASTLÍN V SKLÁRSTVE

72%
Mihályiová J.
Študijné zvesti
|
2009
|
issue 46
171 - 177
EN
In the article woods and plants are given, which were used in glass production as firewood, for production of potash, glassworker’s moulds, and handles of implements or for molten glass purification. Wood of European beech (Fagus sylvatica) was the most calorific and very frequently used in glassmaking workshops. Developing glass production resulted in increasing wood usage and caused its subsequent shortage. The beech wood was substituted for less calorific woods of oak (Quercus sp.), ash (Fraxinus sp.), pine (Pinus sp.), spruce (Picea sp.), maple (Acer sp.) or willow (Salix sp.). The beech wood was exclusively used for production of potash, what is chemical matter added to glass batch to influence a glass melt quality. Shortage of this wood forced glassmakers to look for new raw materials with high alkaline content. Abundant plant material that was usable was offered by straw of cereals: wheat (Triticum sp.), barley (Hordeum sp.), sunflower (Helianthus sp.), maize (Zea mays), leaves of bean (Phaseolus sp.), potatoes (Solanum tuberosum), pressed remains of grapes (Vitis sp.) and waste from distillation of spirit from sugar-making molasses (beta vulgaris). Wild plants of thistle (Cardus sp.), celandine (Chelidonium sp.), nettle (Urtica sp.) and aubergine (Solanum sp.) were usable as well. One thousand kilograms of beech wood was used to produce 1 kg of potash, while 25 kg of potash could be made from sunflower remains. Physical qualities of beech wood met all requirements of production of glass moulds or implement handles. The wood of pear (Pyrus sp.) and plum (Prunus sp.) are known to be used as well. Although there were attempts to substitute the beech wood for another woods and plants, no alternative raw material compared to beech wood. This was achieved by chemically produced mineral salts only.
first rewind previous Page / 1 next fast forward last
JavaScript is turned off in your web browser. Turn it on to take full advantage of this site, then refresh the page.