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1
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Biofortification of maize with micronutrients by Spirulina

100%
Tuhy Ł., Samoraj M., Witkowska Z., Chojnacka K.
Open Chemistry
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2015
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vol. 13
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issue 1
EN
The aim of the present work was to examine the effect of the application of Spirulina platensis post-extraction residues enriched with Zn(II), Mn(II), Cu(II) via biosorption as micronutrient fertilizer for the biofortification of maize grains with micronutrients in field tests. As a nominal dose 2.5 kg ha-1 of zinc, 1.0 kg ha-1 of manganese and 0.5 kg ha-1 of copper were applied. The preparation was applied also in higher doses (150%, 200%) to investigate agronomic biofortification of maize grains. In field trials, obtained grain yield (7.2 Mg ha-1 for Spirulina 100%) was higher than in control group (6.2 Mg ha-1) and commercial reference product (6.6 Mg ha-1). For the same dose of micronutrients, their bioavailability was higher for bio-preparations than for reference fertilizer. The highest content of micronutrients delivered to plants (2.15 mg kg-1 – Cu, 7.07 mg kg-1 – Mn, 29.0 mg kg-1 – Zn) was observed for maize grains fertilized with preparation of Spirulina 150%, which signifies that biofortified maize grain was obtained. Corn grains biofortified with micronutrients can be used as staple food or feed preventing from micronutrient malnutrition. The application of micronutrient biocomponents based on Spirulina biomass allows to manufacture a valuable fertilizer with bioavailable micronutrients.
2
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Relationships between anaerobic performance, field tests, and functional level of elite female wheelchair basketball athletes

88%
Molik B., Laskin J. J., Kosmol A., Marszałek J., Morgulec-Adamowicz N., Frick T.
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2013
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vol. 14
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issue 4
366-371
EN
Purpose. The aim of this study was to evaluate the associations between anaerobic performance (AnP), applicable field tests, and the functional classification levels in female wheelchair basketball athletes. Methods. Female wheelchair basketball athletes (N = 23; Category A, n = 9; Category B, n = 14) from the Canadian national team were evaluated using field tests and the 30-second Wingate Anaerobic Test. Measures of peak power output (PP), time to achieve peak power (tPP), mean power output (MP), and a fatigue index (FI) were used to assess AnP. A test battery evaluating seven wheelchair basketball skills was applied. Student’s t test was used to identify differences between the two main functional categories (A and B). Spearman’s rank correlation coefficient and Pearson’s product-moment correlation coefficient were calculated to determine the significance of all relationships between the parameters of AnP, the results of the field tests, and the eight functional classification levels of the athletes (1.0-4.5 pts.). Results. In all analyzed parameters, except for the field test measuring shooting skills, the results of AnP were significantly higher for Category B players. Significant relationships were observed between athletes’ classification level and AnP and the field tests except for tPP, the 5 m sprint, and the shooting test. The strongest association was observed for MP and PP, MP and FI, PP and FI (p = 0.001). Conclusions. Strong associations were found between the functional classification level and AnP of the female wheelchair basketball athletes. The strongest correlation was confirmed between MP, PP, and the field test measuring the two-handed chest pass, suggesting that this test can be used to indirectly assess the anaerobic performance of female wheelchair basketball athletes.
3
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Experimental identification of dynamic characteristics of a track structure influencing the level of noise emission

75%
Kraśkiewicz C., Mossakowski P., Zbiciak A., Al Sabouni-Zawadzka A., Kraśkiewicz C., Mossakowski P., Zbiciak A., Al Sabouni-Zawadzka A.
Archives of Civil Engineering
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2021
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vol. 67
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issue 4
4
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Analysis of dynamic replacement column construction process on neighbouring engineering structures

71%
Łupieżowiec M., Kanty P., Łupieżowiec M., Kanty P.
Archives of Civil Engineering
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2015
|
issue 3
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