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The Historic Landscape Elements Analysis
KOTEK, Jiří
The two most important reasons of partial depopulation of the right shore of the Lipno dam were the transfer of Germans after the World War II and the Iron Curtain establishment in 1950s. Inhabitants were turn out from borderland, local villages were largely destroyed, meadows and pastures have been wasted for decades and they are under secondary succession. Although a lot of villages were destroyed, we can identify it by plants whose occurrence is closely associated with existence of resident enclaves (fruit tree species, nonforest green vegetation, woody ornamentals). The aim of this work is to describe these plants species, locate their position and judge changes in the time.
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Wheat B-starch based polymeric materials
Kotek, Jiří ; Kruliš, Zdeněk ; Šárka, E.
The contribution is aimed at preparation of a thermoplastic material derived from the wheat B-starch. Two ways have been followed, namely blending of the starch with poly(ε-caprolactone) (PCL) and plasticizing of the starch. In both cases, properties of the materials based on the B-starch are comparable to analogous materials based on the A-starch. The prepared materials have potential application as biodegradable films for agriculture.
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Fuel prices and their impact on road transport
KOTEK, Jiří
Development of road transportation in Czech republic was compared with driving fuels prices development by the simple statistic examination. In was discovered, that volume of transported goods is developing indenpendently on prices of petrol and diesel in each year during last ten years. This fact is explained by business enviroment of goods transportation. Companies are obligate to deliver the goods by contract apart of the price of fuels. Outputs of goods and personál transportation rising along with prices of fuels, which is caused by growth of economy in Czech republic leading do larger amount of possible contracts and oportunities. Statistic analysis therefor confirms the hypothesis stated above. Prices of driving fuels have no influence in growth neither the structure of vehikle park in Czech republic. The amount of vehicles rises steadily last ten years indenpendently on fuel prices development. Economy crysis only slows the rise down.
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Book of Abstracts
Kotek, Jiří ; Studenovská, Hana
The book of abstracts contains the summaries of all the contributions to the workshop Career in Polymers II organized in Prague, July 23-24, 2010 by the Institute of Macromolecular Chemistry AS CR, v.v.i. under the auspices of Central and East European Polymer Network.
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Interlaminar shear strength of textile reinforced carbon-carbon composite
Kotek, Jiří ; Glogar, Petr ; Černý, Martin
Interlaminar fracture of carbon fabric reinforced carbon composites with different volume fractions of reinforcement (Vf = 36 - 60 %) was investigated by tensile loading of double-notched specimens. Dynamic tensile and in-plane shear moduli of all materials increased with increasing Vf. The interlaminar shear strength yielded maximum values for specimens with volume fraction Vf ~ 48 %. After graphitisation, the in-plane shear modulus fell remarkably which is probably due to "stress graphitisation" of the matrix.
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