Alexandra Gertrud HOSU – PRACK


27-23 ASPECTE PRIVIND PRELUCRAREA OSHIBANA A FLORILOR DIN CATEGORIA ERYTHRONIUM DENS CANIS

ASPECTS REGARDING OSHIBANA PROCESSING OF
ERYTHRONIUM DENS CANIS FLOWERS
Erythronium Dens Canis is a spring flower with high visual impact due to its petal disposing as a radiate crown in the early stage and as an open dog mouth in the later stage. The visual effect is enhanced by stamina position in the centre of the flower. Such nice flower worth’s to be processed by Oshibana method. We collect several flowers from Faget Woods nearby Cluj Napoca, Romania, in several development stages: bloom, early opened flower and mature opened (late) stage. All were pressed according to the best option: large numbers of paper pages between flower layers and average loading of around 3 kg uniform distributed over an A4 page format. The optical microscopy evidence a good pressing of the petals with a good cohesion among cellular walls. The final test shows that the Erytronium Dens Canis pressed flowers are suitable for Osibana compositions.
Keywords: Oshibana, Erythronium Dens Canis
Cuvinte cheie: Oshibana, Erythronium Dens Canis

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25-17 UNELE ASPECTE INGINEREŞTI PRIVIND ARTA OSHIBANA

SOME ENGINEERING ASPECTS REGARDING
OSHIBANA ART
The pressed flower art, Oshibana, was developed by japans samurai
centuries ago. This art found followers in Romania, some of them being
Oshibana Maestro Artist. Inspired by them we found that some basic
engineering aspects are beyond the success in the flower pressing process.
The authors of this paper aim to practice these engineering aspects on the
vegetal material to obtain suitable Oshibana parts. We use petals from the
following flowers: yellow rose (Rosa L.), red carnation (Dianthus Caryophyllus),
and violet crocus (Crocus Vernus). The resulted pressed petals were
investigated with transmitted light optical microscope. The petals fibber network
was observed as well as the pigment alveoli. The petal cohesion under
pressure is assured by the cellulose fibres meanwhile the intracellular liquid is
absorbed by the press paper pages, finally the petal cells become flat and dry.
The pigment alveoli were distinct observed for all samples. Their diameter is
significantly increased under pressure ranging from 30 – 40 μm. The flattening
tendency is prone at Crocus and Dianthus and less intense at the Rose petal.
Keywords: pressed flowers, Oshibana, optical microscopy
Cuvinte cheie: flori presate, oshibana, microscopie optică
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19-78 DISTRIBUŢIA MINERALELOR ÎN CENUŞA DE HUILĂ DE LA TERMOCENTRALA PAROŞENI

MINERALS DISTRIBUTION IN COAL FLY ASH FROM
PAROSENI POWER PLANT
Large ash dumps, formed in time, are a high harmful potential for
environment. Our study points out the mineral contained in fly ash resulted at
Paroşeni power plant. The X-ray diffraction analysis reveals large amounts of
quartz, mullet, potasic feldspar, Seri cite and hydrated hematite. Microscopy
investigation prove that quartz particles keeps their initial equiaxial shape
meanwhile higher amount of mullet and hematite feature spherical shape due
to their melting during coal burning. The quantitative microscopic analysis
reveals three particles domains: the larger one having the average diameter of
100 μm, the intermediary one having the average diameter of 44 μm, and the
finest one having the average diameter of 23 μm. Quartz particles are often
found in the larger particle range, hematite hydrate and mullet are often found
in the intermediary particle range, meanwhile feldspar and Seri cite are situated
mainly in the finest particle range.
Keywords: ash, coal, power plant
Cuvinte cheie: cenuşă, huilă, termocentrală

78 DISTRIBUŢIA MINERALELOR ÎN CENUŞA DE HUILĂ


23-27 INVESTIGAREA COMPOZIȚIEI UNEI MOSTRE DE TENCUIALĂ VECHE

THE INVESTIGATION OF AN OLD
PLASTER SAMPLE
Wall plasters are featured since the first buildings are raised. They are
often found in Roman Empire for many applications such walls and hypocaust
structure. One of the main components in such plasters is broken brick. We
found broken brick in a usual plaster dating from 1950, along with quartz,
calcite, kaolinite, and portlandite. We can affirm that the investigated plaster
sample is more similar to the roman plasters than to the modern one.
Cuvinte cheie: tencuială, difracţie cu raze X
Keywords: surface-mounted, x-ray diffraction

23-27 INVESTIGAREA COMPOZIȚIEI UNEI MOSTRE