Wyniki wyszukiwania - Biblioteka Nauki

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Polskie prawo kosmiczne – wyzwania i kompromisy

100%

Kłoda M. , Malinowska K. , Malinowski B. , Polkowska M.

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2022

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nr 3(170)

95–119

EN

The paper was prepared by members of the Task Force for Polish Space Law operating at the Centre for Space Studies, Kozminski University in Warsaw. The purpose of this paper was to examine the challenges associated with the adoption of a national space legislation, including an analysis of the position of professionals and entrepreneurs active in the Polish space sector on the content of future Polish legislation on space activities. The authors were tasked with presenting the essential issues of Polish regulation of space activity, i.e. its subject and scope, including establishing the spatial scope of statutory regulation and addressing the issue of liability for damage and insurance of such liability. The analysis was conducted both from the perspective of the formal foundations of national legislation on space exploration, which is supposed to reflect the international obligations of the country in this area, and from the perspective of the interests of all stakeholders who bear the main burden of carrying out this risky activity.

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Rewizja przybliżonej metody szacowania oporu całkowitego kadłuba płynącego w przechyle

100%

Karczewski A. , Malinowska K. , Pruszko H.

Mechanik

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2019

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tom R. 92, nr 1

42--45

PL

Na tle innych obiektów pływających jacht żaglowy wyróżnia się m.in. tym, że choć jest zaprojektowany jako pojazd poruszający się w pozycji wyprostowanej, to jednak znaczną część czasu żegluje w przechyle. Dlatego tak ważne jest poznanie zachodzących wtedy zjawisk, zwłaszcza związanych z oporem hydrodynamicznym. W artykule zaprezentowano porównanie oparte na weryfikacji wybranej, przybliżonej metody oszacowania zmian oporu całkowitego gołego kadłuba w wyniku jego przechylania się, polegającej na sprawdzeniu wykonanym metodą numeryczną (CFD) i eksperymentalną (przez badania modelowe). Obliczenia uproszczone oparto na metodach opracowanych w ramach serii Delft (The Delft Systematic Yacht Hull Series, DSYHS). W artykule przedstawiono wyniki oszacowań dla wybranego jachtu żaglowego.

EN

Unlike other floating structures yachts sail in heel most of their life, however, resistance in design process is estimated in upright condition. Thus, it is crucial to investigate into phenomena related to change of hull resistance due to heel. This article presents assessment of influence of yacht’s heel on bare hull resistance using approximate method. Results were compared to towing tank experiments and numerical computation (CFD). Calculations were performed using formulae developed based on The Delft Systematic Yacht Hull Series. Article presents results of analysis for specific sailing yacht.

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Chemical Composition of Industrial Wood Waste and the Possibility of its Management

88%

Malinowski R. , Meller E. , Ochman I. , Malinowska K. , Figiel-Kroczyńska M.

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2022

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tom Vol. 32, no. 4

167--183

EN

Organic wood waste (sawdust, shavings, pieces of wood and bark), is widely used as a secondary raw material and, after composting, for soil fertilisation and substrate production in agriculture, horticulture, forestry, urban landscaping and rehabilitation of degraded land. However, problematic to process is wood waste that is very dirty with soil. They have limited calorific value and cannot be used in the R10 recovery process of land treatment benefiting agriculture or improving the environment. However, the morphological composition of these wastes indicates that they have good properties and can be used for agricultural use and for the reclamation of degraded land. The research involved wood waste with the code 03 01 99 (other unspecified waste from wood processing and the production of panels and furniture) generated during the preparation of deciduous tree logs for the veneer production process, and ashes from the burning of wood waste generated in the veneer production factory. The aim of the study was to assess the chemical composition of these wastes and the possibility of their agricultural use. In the samples of wood waste and ashes there was determined: pH; chlorines content; conductivity; hydrolytic acidity; content of micro and macroelements and heavy metals. The morphological composition of the waste is dominated by sawdust, with a smaller share of shavings, bark and earth parts, and a small addition of pieces of wood of various sizes. It is rich in easily bioavailble as well as total macroelements and is not contaminated with heavy metals. Analyzed wood waste has deacidifying properties, high sorption and buffering capacity. Studies have shown that the wood waste produced at the veneer factory, can be used as an organic fertiliser, a component of other organic fertilisers, for soil mulching, horticultural substrate and soil and land reclamation.The ash obtained from burning wood is strongly alkaline and rich in alkaline cations, mainly Ca, Mg and K. It is not contaminated with heavy metals. The ash can be used for soil deacidification and fertilization, especially for soil reclamation. The waste from the heap can be used as an organic fertilizer, a component of other organic fertilizers, for mulching soils and as a gardening substrate. However, the possibilities for non-agricultural (e.g.: for the production of pallet, particle board) use are limited due to the high proportion of earthy parts.