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Wyświetlanie 1-4 z 4
Tytuł:
Response of Camelina sativa Oil to Different Levels of N-P-K and Compost Fertilizers
Autorzy:
El-Sayed, Abd El-Ghafour A.
El-Liethy, Ahmed S.
Hendawy, Saber F.
Hefni, Omnia G.
Powiązania:
https://bibliotekanauki.pl/articles/1955435.pdf
Data publikacji:
2021
Wydawca:
Polskie Towarzystwo Inżynierii Ekologicznej
Tematy:
NPK
Camelina sativa
compost fertilizer
Opis:
This study was conducted during the two winter seasons (2018/2019&2019/2020) to investigate the effect of NPK and compost fertilizers on the Camelina sativa plant under Egyptian ecology. The fertilizer levels of NPK were 0, 25, 50, 75 and 100%, recommended doses, whereas compost was applied at 6, 8 and 10 m3/fed to investigate the effect of these fertilizers and the interaction of both chemical and organic fertilizers on the vegetative growth, oil yield and oil components percentage, especially Linolenic acid (ω-3). The obtained results indicated that the application of 100% NPK as well as 10 m3 of compost produced the highest mean values of all vegetative characteristics compared to unfertilized plants at both samples in the two growing seasons and the other treatments. On the other hand, the results showed that all NPK treatments, i.e. 25, 50, 75, and 100% NPK significantly increased seed yield (g/plant) as compared to control, the mean values were 3.06, 4.70, 9.09 and 10.20 g/plant compared to 1.84 g/plant, respectively, for the 1st season and 3.11, 4.48, 9.27 & 10.27 g/plant comparing to 1.80 of control for the 2nd season. Compost treatments significantly increased the seed yield; the mean values were 5.10, 5.72, 5.88 and 6.42 g/plant in the 1st season and 5.09, 5.73, 5.99 and 6.32 g/plant in the 2nd season for fertilization with 0, 6, 8 and 10 m3/Fed., respectively. The maximum mean values were obtained by compost at 10 m3/fed. The interaction treatment between 100% NPK and 10 m3/fed showed the maximum mean value of seed yield which recorded 10.51 and 10.78 g/plant for the 1st and 2nd seasons, respectively. In contrast, the lowest values of seed yield were obtained from unfertilized plant which recorded 1.09 and 1.04 g/plant for the 1st and 2nd seasons, respectively. The promising effect of NPK fertilizer on fixed oil % and yield was evident with NPK 100%, 52.53% and 52.83% fixed oil, whereas yield was 408.63 and 413.68 l/fed.), followed by 75% NPK which produced fixed oil percentage and yield 46.82, 46.77% as well as 207.29 and 208.06 l/fed for the first and second season, respectively, compared with other treatments and control. The highest fixed oil percentages and yield (l/fed) were recorded with NPK at 100% and compost at 10 m3/fed during both seasons.
Źródło:
Journal of Ecological Engineering; 2021, 22, 7; 260-270
2299-8993
Pojawia się w:
Journal of Ecological Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Mineralogical study and enhanced gravity separation of gold-bearing mineral, South Eastern Desert, Egypt
Autorzy:
El-Sayed, Samah
Abdel-Khalek, N. A.
El-Shatoury, E. H.
Abdel-Motelib, A.
Hassan, M. S.
Abdel-Khalek, M.A.
Powiązania:
https://bibliotekanauki.pl/articles/1845207.pdf
Data publikacji:
2020
Wydawca:
Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej
Tematy:
gold
mineralogy
petrography
gravity separation
Falcon concentrator
Opis:
El-Hudi gold deposit, located in the South Eastern Desert of Egypt, represent large vein- type gold occurrence. The representative sample revealed the abundance of quartz as main constituent with minor amounts of mineral impurities. Gold was detectable (12 g/t) as determined using atomic absorption. The petrographic study revealed that the gold grains ranged from 10-40 μm. The grain boundaries of quartz are highly stained with iron minerals as hematite and limonite. Sericite mineral is common in discrete gold-bearing veins. Eroded pyrite was detected with high alteration leaving only cubic-shaped cavities behind. Different techniques for gravity separation were used to separate gold from the quartz mineral. After crushing and grinding of the sample, shaking table was used to upgrade the coarser fractions while Falcon concentrator was employed to upgrade the fine fraction. The best concentrate was obtained through grinding the whole sample to less than 0.2 mm, followed by cleaning steps. The gold content is increased from 12 to 145 g/t with total recovery of 78%.
Źródło:
Physicochemical Problems of Mineral Processing; 2020, 56, 5; 839-848
1643-1049
2084-4735
Pojawia się w:
Physicochemical Problems of Mineral Processing
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
A preliminary study on some Chlorella spp. for biodiesel production
Autorzy:
Mohammady, N.G.-E.
El-Sayed, H.S.
El-Kassas, H.Y.
Elsherbiny, B.A.
Powiązania:
https://bibliotekanauki.pl/articles/80100.pdf
Data publikacji:
2017
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
biodiesel production
Chlorella
fatty acid
growth
lipid
oil
esterification
fatty acid methyl ester
Źródło:
BioTechnologia. Journal of Biotechnology Computational Biology and Bionanotechnology; 2017, 98, 4
0860-7796
Pojawia się w:
BioTechnologia. Journal of Biotechnology Computational Biology and Bionanotechnology
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Characteristic attributes of the peanut [Arachis hypogaea L.] for its separation
Autorzy:
El-Sayed, A.S.
Yahaya, R.
Wacker, P.
Kutzbach, H.D.
Powiązania:
https://bibliotekanauki.pl/articles/26580.pdf
Data publikacji:
2001
Wydawca:
Polska Akademia Nauk. Instytut Agrofizyki PAN
Tematy:
aerodynamic property
Arachis hypogaea
peanut
physical property
terminal velocity
separation
Źródło:
International Agrophysics; 2001, 15, 4
0236-8722
Pojawia się w:
International Agrophysics
Dostawca treści:
Biblioteka Nauki
Artykuł
    Wyświetlanie 1-4 z 4

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