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The Influence of Agroclimatic Factors on the Formation of Oil Content in Flax Seeds in the North of Kazakhstan

Gordeyeva Y., Shestakova N.

Journal of Ecological Engineering

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2018

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Vol. 19, nr 3

102--105

EN

Flax (Linum usitatissimum L.) is one of the promising oil crops in the north of Kazakhstan. Over the last 10 years, the total area under this crop in the region has increased fourteen-fold, since flax is a very plastic crop for steppe and dry steppe conditions, and oil seeds are in high demand in the world market. Flaxseed oil, due to the content of polyunsaturated fatty acids, occupies one of the first positions among other edible vegetable oils. Depending on the environmental conditions, the oil content of the crop may vary from 36.4% to 52.0%, while, as noted by many researchers, the change in the oil content depends on the genotypic characteristics. Therefore, the study aims to analyze the influence of the genotype and climatic conditions of cultivation on the fat biosynthesis in flax seeds in the context of the dry steppe zone of Northern Kazakhstan on dark chestnut soils of the Akmola region. Field experiments were conducted in 2015–2017 with the study of nine oil flaxseed cultivars (of mid-season varieties) sown on May 20th at the seeding rate of 7 million seeds/ha based on the traditional technology of cultivation recommended for the region. The climatic parameters were taken into account according to the meteorological service data. The fat content was determined by the extraction method using a Soxhlet apparatus, in accordance with GOST (All-Union State Standard) 10857–64, and the moisture content was determined by means of the thermogravimetric method, according to the National Standard of the Republic of Kazakhstan 2.195–2010, for the recalculation of the oil content for absolutely dry matter. It was found that the formation of oil depends on the climatic parameters and on the sum of active temperatures during the ripening period, in particular. The evaluation of plasticity and stability of the cultivars (genotypes) showed that VNIIMK 620, Lirina, Karabalyksky 7 can be considered highly valuable cultivars and Severny, Biryuza, Kazar, Ilyich – valuable cultivars in terms of the oil content for the dry steppe zone.

2

Theoretical analysis of various climatic parameter effects on performance of a basin solar still

Afrand M., Karimipour A.

Journal of Power Technologies

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2017

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Vol. 97, nr 1

44--51

EN

A numerical simulation of a basin solar still under various climatic parameters was performed. The proposed system was modeled using the mass and energy balance equations of different parts of the solar still. The resulting system of nonlinear algebraic equations was solved numerically and the effect of various parameters, such as wind speed, air temperature and solar radiation on the amount of distilled water produced was described. The results showed that the ambient temperature and wind speed had no significant effect on the amount of distilled water produced, while the amount of solar radiation exerted a direct effect on the amount of distilled water produced and performance of the system.

3

Próba oceny zmienności wybranych parametrów klimatycznych

Wilk B.

Zeszyty Naukowe. Budownictwo / Politechnika Śląska

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2004

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z. 102

561-568

PL

W referacie podjęto próbę oceny zmienności natężenia całkowitego promieniowania słonecznego oraz temperatury powietrza zewnętrznego na podstawie wyników badań uzyskanych na stanowisku badawczym w Gliwicach w latach 1994-2002. Otrzymane wyniki badań porównano z wartościami analizowanych parametrów klimatycznych podanymi w normie [8].

EN

An attempt to estimate a variability of total solar radiation and external temperature is undertaken in the paper, on the basis of research results obtained on research stand in Gliwice in period 1994-2002. Obtained research results were compared with analysed values of climatic parameters given in Polish Standard [8].

4

Cel, metody i wybrane przykłady monitoringu środowiska na stacji badawczej przy Wydziale Geologii UW

Małecka D., Małecki J. J.

Przegląd Geologiczny

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2002

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Vol. 50, nr 10/2

1004-1008

EN

The paper presents a general review of methods concerning activity of the research station and characteristics of particular research stands. The way of gathering, processing and imput of data are shown on the selected examples. Importance of continuous monitoring of moisture gradient and temperature in the aeration zone is stressed. These parameters are essential for creating geochemical models. The results of experimental research conducted during three-step pumping tests of the Oligocene aquifer are discussed.