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Wyszukujesz frazę "Young, A. P." wg kryterium: Wszystkie pola


Wyświetlanie 1-4 z 4
Tytuł:
Variability of macroelements content in soils of a young glacial river valley - a geochemical landscape approach
Autorzy:
Sowiński, P.
Powiązania:
https://bibliotekanauki.pl/articles/962841.pdf
Data publikacji:
2016
Wydawca:
Uniwersytet Warmińsko-Mazurski w Olsztynie / Polskie Towarzystwo Magnezologiczne im. Prof. Juliana Aleksandrowicza
Opis:
The content and relationships between amounts of macroelements (Ca, Mg, K, Na and Fe) and soil properties along three catenas in the young glacial Łyna River valley, NE Poland, are discussed in the paper. The results were presented against the background of four geochemical landscapes distinguished within the study area: eluvial / trans-eluvial, eluvial accumulative, trans-super-aqual and super-aqual. The middle part of the Łyna River valley is covered with Fluvic Phaeozems and Dystric Fluvisols formed from sands, loams and silts. In some parts, Mollic Gleysols (Limnic) formed from peats and gyttja occur. In the areas adjacent to the floodplain, Eutric Umbrisols (Pantocolluvic) and Haplic Umbrisols (Colluvic) formed from loams, silts and clays are located. The upper slope of the valley is covered by Luvic Pheazems, Luvic Umbrisols, Brunic Dystric Arenosols and Dystric Arenosols The average content of macroelements reached: Cat – 6.60 g kg-1, CaHCl – 3.17 g kg-1, Mgt – 2.79 g kg-1, MgHCl – 0.68 g kg-1, Kt – 7.27 g kg-1, KHCl – 0.20 g kg-1, Nat – 0.84 g kg-1, NaHCl – 0.22 g kg-1, Fet – 8.72 g kg-1 and FeHCl – 5.48 g kg-1. Th content of macroelements in soils of the analysed area was varied between the four geochemical landscapes. The analysis, supported by PCA ordination, resulted in significant positive relations between the macroelement contents and silt (0.05-0.002 mm) and clay (<0.002 mm) soil fractions, CaCO3, pHKCl and amounts of organic matter, as well as an inverse relation to the share of sandy (2.0-0.05 mm) soil fraction. Soils in super-aqual geochemical landscape were the most abundant in macroelements (except KHCl and Nat). The most typical sites of macroelement accumulation were the following geochemical landscapes: super-aqual > trans-super-aqual > eluvial accumulative > eluvial / trans-eluvial.
Źródło:
Journal of Elementology; 2016, 21, 4
1644-2296
Pojawia się w:
Journal of Elementology
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Effect of selenium and vitamin E supplementation on erythropoiesis in young goats
Autorzy:
Snarska, A.
Illek, J.
Snarska, H.
Grzybowska, D.
Sobiech, P.
Powiązania:
https://bibliotekanauki.pl/articles/53853393.pdf
Data publikacji:
2023
Wydawca:
Uniwersytet Warmińsko-Mazurski w Olsztynie / Polskie Towarzystwo Magnezologiczne im. Prof. Juliana Aleksandrowicza
Opis:
Selenium is one of the most commonly supplemented microelements in ruminants because deficiency of this trace element is a global problem that can lead to several diseases, especially in young animals during the neonatal period. The aim of this study was to assess the activity of the hematopoietic process based on cytological evaluation of caprine bone marrow smears in goats supplemented with selenium and vitamin E during the neonatal period. Twelve clinically healthy goats at the age of 2 days participated in the study. They were divided into two equal groups (n=6). The goats from the experimental group received a single dose of Se and vitamin E on the second day of life. Bone marrow was collected 2 times, stained with the MGG method, and subjected to cytological evaluation. Peripheral blood was sampled 3 times and peripheral blood smears were analyzed. The bone marrow cells in the group receiving the supplement absorbed dyes faster and more intensively than the same cells in the control animals. The number of erythroblasts was higher in goats from the experimental group than in the control group, which indicated the intensification of erythropoiesis in animals supplemented with selenium and vitamin E. The results of morphological tests clearly indicated an increase in the number of erythrocytes and a higher hemoglobin concentration in the group receiving selenium and vitamin E. Selenium and vitamin E supplementation has a positive impact on the erythropoiesis in bone marrow and can prevent neonatal anemia in goats.
Źródło:
Journal of Elementology; 2023, 28, 2; 393-404
1644-2296
Pojawia się w:
Journal of Elementology
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Response of young fig (Ficus carica cv. Sarılop) trees to different irrigation levels in a semi-arid mediterranean environment
Autorzy:
Akçay, S.
Doğan, P.
Powiązania:
https://bibliotekanauki.pl/articles/53834138.pdf
Data publikacji:
2023
Wydawca:
Uniwersytet Warmińsko-Mazurski w Olsztynie / Polskie Towarzystwo Magnezologiczne im. Prof. Juliana Aleksandrowicza
Opis:
Drought scenarios that will be faced in the near future in the Mediterranean Basin will affect sustainable crop production in the region. Even the drought tolerant crops under rain-fed conditions will need supplemental irrigation. The fig tree originates from this region and is grown under semi-arid conditions as a drought-prone crop. The aim of this research is to develop irrigation strategies under various irrigation levels in young fig trees. Five irrigation levels were investigated, covering the rainfed treatment (S0), as well as the fully irrigated treatment S4 (100%) and the S1 (25%), S2 (50%) and S3 (75%) treatments of the full irrigation level. The vegetative growth parameters including plant height, stem diameter, shoot length and number of leaves were evaluated in a two-year field experiment. Additionally, stem water potential (SWP), leaf area index (LAI) and proline content (PC) were also measured. The average seasonal water use values (ET) of young trees ranged from 25.5 to 472.2 mm. Plant vegetative growth parameters were significantly affected by irrigation levels and higher growth was observed in the S3 (75%) and S4 (100%) treatments. Plant physiological responses to different irrigation levels have a significant impact on SWP, LAI and PC measurements. In conclusion, S3 treatment (75% irrigation level) appears to be a good alternative to fully irrigated treatment for growing young fig trees under water-scarce conditions in western Turkey. SWP could be used as a tool in irrigation scheduling of young fig trees. Mean SWP values between -0.82 and -0.86 MPa can be accepted as threshold value for semi-arid regions.
Źródło:
Journal of Elementology; 2023, 28, 3; 831-854
1644-2296
Pojawia się w:
Journal of Elementology
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Dietary intake of minerals (Ca, P, Na, K, Mg, Fe, Zn, Cu, Mn, I, Se, and Mo) in young Korean adults with a self-selected diet
Autorzy:
Choi, M.-K.
Seong-Hee, Y.
Powiązania:
https://bibliotekanauki.pl/articles/53830849.pdf
Data publikacji:
2023
Wydawca:
Uniwersytet Warmińsko-Mazurski w Olsztynie / Polskie Towarzystwo Magnezologiczne im. Prof. Juliana Aleksandrowicza
Opis:
This study assessed dietary 12 mineral intakes in young Korean adults with a self-selected diet. The study aimed to investigate the intake status of minerals in young adults for balanced nutritional management. As a cross-sectional study, anthropometric measurements and a dietary intake survey using a 24-hour recall method were conducted in 100 adults aged 19–31 years. Then, 12 mineral intakes of the subjects were analysed using mineral content databases. The daily mineral intakes of all subjects were 525.02 mg for Ca, 1041.89 mg for P, 3538.83 mg for Na, 2270.92 mg for K, 204.62 mg for Mg, 12.21 mg for Fe, 6.80 mg for Zn, 726.11 ug for Cu, 4.43 mg for Mn, 147.35 ug for I, 77.93 ug for Se, and 58.23 ug for Mo. Cereals (Fe, Mo), vegetables (K, Mg), meat (P, Zn, Se), and teas·beverages·alcohols (Cu, Mn) were the main food groups of various mineral intakes along with milks and dairy products (Ca) and seaweeds (I). Dietary intake of Ca, K, Mg, and Zn did not meet the recommended nutrient intake (RNI) or adequate intake (AI). In addition, the minerals in which the index of nutrient quality value was less than 1 were Ca at 0.82, K at 0.79, Mg at 0.77, and Zn at 0.88. However, the daily intake of P, Na, and Mo significantly exceeded the RNI or AI. In young Korean adults with a self-selected diet, dietary intakes of some minerals (Ca, K, Mg, and Zn) did not meet the dietary reference intakes, while some (P, Na, and Mo) were met. Therefore, we can suggest that balanced mineral intake is needed along with intake exceeding the mineral reference value.
Źródło:
Journal of Elementology; 2023, 28, 3; 671-685
1644-2296
Pojawia się w:
Journal of Elementology
Dostawca treści:
Biblioteka Nauki
Artykuł
    Wyświetlanie 1-4 z 4

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