Autor: Horák, Jan. - Katalog OPAC zbiorów

Skocz do pozycji: 1.

Tytuł:: NATO [North Atlantic Treaty Organization] vehicles in detail : NATO logistic exercise "Collective Effort 2004"
Autorzy:: Kořán, František.
Horák, Jan.
Współwytwórcy:: Bumbálek, Jiří. Tłumaczenie
Data publikacji:: 2005
Wydawca:: Prague : RAK : Wings & Wheels
Tematy:: Samochody wojskowe kraje NATO 2005 r. ikonografia
Dostawca treści:: Bibliografia CBW

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Tytuł:: Biochar and Biochar with N Fertilizer Impact on Soil Physical Properties in a Silty Loam Haplic Luvisol
Autorzy:: Horák, Ján
Šimanský, Vladimír
Igaz, Dušan
Powiązania:: https://bibliotekanauki.pl/articles/125328.pdf
Data publikacji:: 2019
Wydawca:: Polskie Towarzystwo Inżynierii Ekologicznej
Tematy:: biochar
soil moisture
soil temperature
bulk density
N fertilization
Opis:: Recently, a lot of studies focused on the effects of biochar application to agricultural soils and its influence on the soil properties. However, only limited information is available on the simultaneous impact of N-fertilizer combined with biochar to soil physical propersies such as: soil moisture, soil temperature, bulk density and waterfilled pore space. Therefore, the aim of this study was to evaluate the changes in the soil physical properties of a silty loam Haplic Luvisol affected by the biochar application and its combination with N fertilizer during the years 2014–2016 (Experimental site of SUA-Nitra, Dolná Malanta, Slovakia). The field experiment was carried out in 2014 with different biochar application doses (0, 10 and 20 t ha^-1) and different rate of N fertilization (0, 1^st and 2^nd level of N fertilization). The results showed that the both biochar amendment and biochar with N fertilizer increased the soil moisture in the range of 1 to 15%, on average. The higher rate of biochar resulted in higher soil moisture in all treatments with biochar in the following order B0 (14.9) < B10 (15.1) < B20 (16.2) as well as in biochar in combination with N fertilization: B0N1 (14.6) < B10N1 (15.7) < B20N1 (16.2) as well as B0N2 (14.8) < B10N2 (15.8) < B20N2 (16.0) during the years of 2014–2016. A positive trend of water-filled pore space increase by the time in all studied treatments was observed. No significant changes in the average soil temperature were observed between the biochar and biochar with N fertilization treatments during the growing seasons of individual years. The higher rate of biochar resulted in lower soil bulk density in all treatments with biochar in combination with N fertilization in the following order: B0N1 (1.49) > B10N1 (1.47) > B20N1 (1.44) as well as B0N2 (1.51) > B10N2 (1.47) > B20N2 (1.39) during years the studied period (2014–2016).
Źródło:: Journal of Ecological Engineering; 2019, 20, 7; 31-38
2299-8993
Pojawia się w:: Journal of Ecological Engineering
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 3.

Tytuł:: Effects of the type of biomass and ashing temperature on the properties of solid fuel ashes
Autorzy:: Horák, Jiří
Kuboňová, Lenka
Dej, Milan
Laciok, Vendula
Tomšejová, Šárka
Hopan, František
Krpec, Kamil
Koloničný, Jan
Powiązania:: https://bibliotekanauki.pl/articles/779459.pdf
Data publikacji:: 2019
Wydawca:: Zachodniopomorski Uniwersytet Technologiczny w Szczecinie. Wydawnictwo Uczelniane ZUT w Szczecinie
Tematy:: biomass
ashing temperature
ash fusion temperature
slagging index
fouling index
Opis:: Ashes were prepared by annealing selected types of solid fuels (biomass: corn cobs, sunflower husks, olive pomace, hay pellets and rice husks; coal: lignite and bituminous; and alternative fuel: paper sludge) at different temperatures (550°C, 815°C and 975°C). Based on X-ray fluorescence spectra, the slagging/fouling indexes were used to study the effects of the type of ash and the ashing temperature on the ash fouling and slagging properties. Slagging indexes were compared with the ash fusion temperatures. Ash fusion temperatures were measured by a LECO AF-700. The lowest deformation temperature (below 1000°C) was seen for the ashes prepared from hay pellets and corn cobs. On the other hand, the deformation temperature exceeded 1500°C for ashes prepared from paper sludge, sunflower husks and rice husks. By calculating the different slagging/fouling indexes, all the ashes exhibited slagging/fouling problems of varying degrees.
Źródło:: Polish Journal of Chemical Technology; 2019, 21, 2; 43-51
1509-8117
1899-4741
Pojawia się w:: Polish Journal of Chemical Technology
Dostawca treści:: Biblioteka Nauki

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