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Wyświetlanie 1-2 z 2
Tytuł:
Assessment of the phytoextraction potential of thirteen plant species for chromium and vanadium and their relationship with sulfur and histidine
Autorzy:
Akkus, Sukran Ozen
Yaman, Burak
Yaman, Mehmet
Powiązania:
https://bibliotekanauki.pl/articles/962679.pdf
Data publikacji:
2017
Wydawca:
Uniwersytet Warmińsko-Mazurski w Olsztynie / Polskie Towarzystwo Magnezologiczne im. Prof. Juliana Aleksandrowicza
Opis:
The aim of this study has been to examine the phytoextraction potential of thirteen plant species for chromium (Cr) and vanadium (V) and their relationship with sulfur and histidine. The species including Juglans regia L., Platanus L., Pinus nigra L., Thuja (Cupressaceae), Salix matsudana, Cupressus arizonica, Eleagnus ang., Vitis vinifera, Nerium olean., Robinia pse., Populous nigra, Grasses and Cedrus libani were collected from two highly industrialized cities: Bursa and Gaziantep, in Turkey. The determinations were carried out by the ICP-MS and HPLC-MS methods. Concentrations of chromium and vanadium were in the ranges of 198-10 484 and 40-1100 μg kg-1, respectively. Concentrations of sulfur were in the range of 705-8762 mg kg-1, while the concentrations of histidine were found to be between 1 and 33 mg kg-1. The ratios of the highest to the lowest chromium concentrations for Salix, Nerium olean. and Thuja (Cupressaceae) were found to be 16.4, 12 and 12.9-fold, respectively. Similarly, the ratios of the highest to the lowest vanadium concentrations for plant species are 2.9-fold for Thuja, 4.1-fold for Pinus nigra, 5.9-fold for Vitis vin. and 3.5-fold for Robinia pseu. Thus, the plant species mentioned above may be considered as a biomonitor and/or having the hyperaccumulator potential for chromium and vanadium. This is the first study in the literature to explore the relationship between the concentrations of histidine and sulfur with chromium and vanadium for the analyzed plant samples. It can be concluded that increased chromium concentrations in Salix leaves stimulate sulfur related with amino acids in this plant.
Źródło:
Journal of Elementology; 2017, 22, 4
1644-2296
Pojawia się w:
Journal of Elementology
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Numerical Analysis of Flow Structure in Reciprocating Compressor
Autorzy:
Demircan, Tolga
Yaman, Ali Burak
Powiązania:
https://bibliotekanauki.pl/articles/1165510.pdf
Data publikacji:
2018
Wydawca:
Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
Tematy:
CFD
Reciprocating compressor
computational fluid dynamics
inlet input angle
Opis:
In line with current rapidly developing technology, mechanization in industry is increasing. In this case, all components that form a machine are becoming important. Compressor plays an important role in operations of numerous machineries. They are used for increasing pressure by compressing gas. Compressors have various types and especially in industries such as automotive, textile, and manufacturing, reciprocating compressors are frequently used. Reciprocating compressors consist of cylinder, piston, and crank and connecting rod mechanism. These components work by narrowing the volume inside the cylinder and increasing gas pressure inside. In this study, flow structure inside a reciprocating compressor was numerically analysed. For this purpose, models were created for 2 different crank angles of a reciprocating compressor. Simulations were made for different pipe angles of inlet pipe and outlet pipe. Valve openings were kept constant at 6 mm. Input and output angles of inlet and outlet pipes to cylinder was changed as 0°, 30°, 45°, 60° and 90°. As a result, it was determined that as the angle of inlet and outlet pipes changed, general flow structure inside the cylinder changed as well. Especially, there were differences in velocity vectors plotted for input and output of the flow from valve to cylinder.
Źródło:
World Scientific News; 2018, 107; 160-170
2392-2192
Pojawia się w:
World Scientific News
Dostawca treści:
Biblioteka Nauki
Artykuł
    Wyświetlanie 1-2 z 2

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