Wyniki wyszukiwania - BazTech

1

Litter Spider Communities and their Effects on Invertebrate Fauna and Decomposing Rates in Nanjenshan Rain Forest, Taiwan

Hou Ping-Chun Lucy, Chien Hao-Chiang, Liu Ren-Tao, Steinberger Yosef

Polish Journal of Ecology

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2019

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Vol. 67, nr 3

231--246

EN

Spiders are among the most important predators in forest litter layer that control food chain and decomposition process. However, little is known about the changes in litter-spider communities from wind-exposed to wind-shielded areas during monsoon seasons, and their roles in litter arthropod distribution and decomposition processes. In the present study, the densities and diversities of the spider communities in litter were examined at the two locations in monsoon and non-monsoon seasons in southern Taiwan. Enclosures with/without the spider Ctenus yaeyamensi were set up to compare litter arthropod distribution and decomposition rates in litterbags in different sampling units. It was found that the mean density of litter spiders was significantly greater in wind-shielded area than wind-exposed area. There was a marked impact of structure and depth of litter layers on guild composition, but not on the diversity indices of the litter spider communities. The litter invertebrates and decomposition rates did not differ between enclosures with/without spiders. However, there was a marked difference in litter arthropod abundance between monsoon and non-monsoon seasons in wind-exposed areas. The decomposition rate was remarkably greater in non-monsoon seasons than in monsoon seasons, whereas there were no marked differences between wind-shielded and wind-exposed locations. It was concluded that litter arthropod distribution and related decomposition were affected by variation of monsoon seasons but not by spider presence/absence in Nanjenshan Rain Forest.

2

Chemical analysis of advanced materials

Bartonickova E., Cihlar J.

Zeszyty Naukowe. Mechanika / Politechnika Opolska

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2007

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Vol. 321, z. 89

13-13

EN

Determination of chemical composition of advanced materials as nanoceramics using the microwave digestion and atomic absorbance spectroscopy is discussed. The technique of microwave-assisted digestion is used for preparation of the materials for analysis of chemical composition. The exact chemical composition is one of the most important factors for prediction of material behavior even at severe reducing conditions and elevated temperatures. The method of microwave-assisted digestion was deeply studied in inorganic materials where the microwave heating dramatically improved the decomposition process and the reaction time was slow down from hours to minutes in many cases. The decomposition of ceramics is more difficult due to their high stability at hydrothermal conditions. The decomposition of ceramic materials with different solvents and additives was studied.

3

Procesy rozkładu zużytych tworzyw sztucznych

Kozłowski E., Krop E., Czachowska-Kozłowska D., Wiatowski M.

Przemysł Chemiczny

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2005

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T. 84, nr 12

915-922

PL

Przedstawiono stan i problemy gospodarki odpadami tworzyw sztucznych. Omówiono najnowsze badania procesów przetwórstwa, zwłaszcza termicznych i katalitycznych procesów rozkładu zużytych tworzyw sztucznych.

EN

A review with 42 refs. covering the present condition of, and problems in the management of waste plastics and results of newest studies on conversion processes, esp. thermal and catalytic.

4

System Approach to the Research Process in Problems of Textile Engineering and Technology

Wojtysiak J.

Fibres & Textiles in Eastern Europe

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2003

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Vol. 11, no. 4 (43)

86--89

EN

This paper presents a method of system approach to the realisation of the research process in textile engineering. A system of research actions based on the division of a textile manufacturing process has been devised in order to develop the manufacturing process for a given textile product. The two independent system types are singled out: - First: the autonomous anticipatory research cycles concerned with scientific examination of the problem for future use; - Second: the design/construction research cycles leading to a practical solution of the problem. The method presented enables the realisation of research processes in all areas of textile engineering.

PL

W artykule przedstawiona została aplikacja metody systemowego ujęcia środka technicznego, lub procesu wytwórczego w odniesieniu do procesu naukowo-badawczego. Pokazana została idea procesu badań naukowych w płaszczyźnie abstraktu iw płaszczyźnie konkretu. Dokonano dekompozycji procesu na operacje cząstkowe, które racjonalizują działania naukowo-badawcze. Zaprezentowany został model procesu realizacji POTRZEBY w ujęciu systemowym. W wyniku analizy tego modelu dokonano podziału procesu na proces ciągłego rozpoznania potrzeb i proces projektowo-konstrukcyjny np. nowego produktu, lub układu wytwórczego. Poddano te dwa procesy szczegółowej analizie w aspekcie podziału na materialne operatory przekształcające i intelektualne operatory przekształcające. Ten sposób ujęcia zagadnienia dobrze porządkuje proces naukowo-badawczy, nadając mu pełną czytelność w jego realizacji.