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Wyświetlanie 1-15 z 302
Tytuł:
On power residues
Autorzy:
Schinzel, Andrzej
Powiązania:
https://bibliotekanauki.pl/articles/1393592.pdf
Data publikacji:
1975
Wydawca:
Polska Akademia Nauk. Instytut Matematyczny PAN
Źródło:
Acta Arithmetica; 1975, 27, 1; 397-420
0065-1036
Pojawia się w:
Acta Arithmetica
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The effect of herbicides on their active ingredient residues in soybean seeds.
Autorzy:
Klimont, Krzysztof
Powiązania:
https://bibliotekanauki.pl/articles/2198782.pdf
Data publikacji:
2000-12-20
Wydawca:
Instytut Hodowli i Aklimatyzacji Roślin
Tematy:
soybean seed
herbicide residues
Opis:
Experimental material consisted of the seeds of Polan, Aldana and Dornburg soybean cultivars harvested from the field experiments in 1990-92 at Sandomierz with the following herbicides and doses: Sencor 75 WP (1.0 and 2.0 kg/ha), Tribunil 70 WP (1.0 and 2.0 kg/ha), Azogard 50 WP (1.5 and 3.0 kg/ha), Afalon 50 WP (1.0 and 2.0 kg/ha). Seeds from plots treated with a single dose of some herbicides (Tribunil 70 WP, Afalon 50 WP) did not exhibit any herbicide active residues or in case of other herbicides their level were far below permissible limits (0.1 mg/kg). The use of double doses, resulted in accumulation of the active remnants in soybean seeds but still their level did not exceed permissible limits. Differences in the level of herbicide active substances in soybean seed were found to depend on season conditions.
Źródło:
Plant Breeding and Seed Science; 2000, 44; 39-43
1429-3862
2083-599X
Pojawia się w:
Plant Breeding and Seed Science
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Prime k-th power non-residues
Autorzy:
Hudson, Richard
Powiązania:
https://bibliotekanauki.pl/articles/1393816.pdf
Data publikacji:
1973
Wydawca:
Polska Akademia Nauk. Instytut Matematyczny PAN
Źródło:
Acta Arithmetica; 1973, 23, 1; 89-106
0065-1036
Pojawia się w:
Acta Arithmetica
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Some notes on k-th power residues
Autorzy:
Elliott, P.
Powiązania:
https://bibliotekanauki.pl/articles/1394178.pdf
Data publikacji:
1968
Wydawca:
Polska Akademia Nauk. Instytut Matematyczny PAN
Źródło:
Acta Arithmetica; 1968, 14, 2; 153-162
0065-1036
Pojawia się w:
Acta Arithmetica
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Effects of Crop Residues and Tillage Operations on Soil Quality Indices
Autorzy:
Emami, Hojat
Riahinia, Fateme
Powiązania:
https://bibliotekanauki.pl/articles/2088172.pdf
Data publikacji:
2021
Wydawca:
Uniwersytet Marii Curie-Skłodowskiej. Wydawnictwo Uniwersytetu Marii Curie-Skłodowskiej
Tematy:
crop residues
conservation tillage
conventional tillage
soil quality
Opis:
Tillage and plant residues influence soil attributes and, consequently, soil quality. Therefore, suitable management and maintaining the stability of soil structure is important. This study was performed to evaluate the effects of tillage systems on soil quality during a 4-year crop rotation (wheat, canola, wheat and tomato) at the Agricultural Research Center of Khorasan Razavi province (Iran) from 2011 to 2015. The study was conducted as a randomized complete block design in a factorial arrangement with 3 replications. For this purpose, conventional tillage (CT), minimum tillage (MT) and no-tillage (NT) systems together with three rates of plant residues (0, 1,500, and 3,000 kg ha-1) were applied annually after harvesting. Soil quality was determined by using the integrated quality index (IQI) and Nemoro quality index (NQI) based on total data set (TDS) and minimum data set (MDS). In total, 23 physical, chemical, and biological soil characteristics were considered as TDS and 7 out of these were selected as MDS for use in the principal component analysis (PCA). Soil quality in different tillage treatments was determined and the most appropriate indices and effective characteristics for soil quality assessment were selected. Correlation coefficients between IQITDS and IQIMDS (r = 0.69) and between NQITDS and NQIMDS (r = 0.76) showed that NQI was a better indicator for assessing soil quality. The NQITDS provided a more accurate and comprehensive assessment of soil quality. However, using MDS reduced the cost and time with proper precision. Soil quality in MT and NT treatments was more desirable than the CT system, and the addition of plant residues improved the soil quality. According to the results of NQITDS, IQITDS, and IQIMDS, soil quality in the NT system with 3,000 kg ha-1 of plant residues and the MT system with 1,500 and 3,000 kg ha-1 of plant residues were more favorable than other soil tillage treatments. Soil characteristics that decreased soil quality in the conventional tillage were soil structure, macro and micronutrients, while in conservation tillage it was micronutrients, especially Zn.
Źródło:
Polish Journal of Soil Science; 2021, 54, 2; 167-183
0079-2985
Pojawia się w:
Polish Journal of Soil Science
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The Reacting of Gun Shot Residues in the Dependence on the Gun Barrel Lenght
Autorzy:
Svachouček, V.
Svachoučková, P.
Velehradský, L.
Ventura, K.
Powiązania:
https://bibliotekanauki.pl/articles/358826.pdf
Data publikacji:
2009
Wydawca:
Sieć Badawcza Łukasiewicz - Instytut Przemysłu Organicznego
Tematy:
gun shot residues
ammunition
analysis
Opis:
Currently, the study of gun shot residues constitutes a wide and a very interesting problem as from the shooter´s view so as from the design enginneers´ view and furthermore possibilities, which infuence the conditions of the products formation process. Currently, one direction of the investigation of gun shot residues proceeds the study of morphology and thereby even possibilities of improvement of frm particles and further physical conditions, which infuence for instance on their stability in the surveyed environment or scatter particles. This problem is investigated by research police institutes above all. The detection of the shot place from the specifc cartridge of a concrete weapon is the objective of their investigation. The lay formation of gaseous gun shot residues and their possible toxicity is interesting from the gunner´s view. We have been dealing with this problem for 5 years. This research paper is intented the problem of the dependence of composition of gaseous gun shot residues on the gun barrel lenght.
Źródło:
Central European Journal of Energetic Materials; 2009, 6, 2; 211-216
1733-7178
Pojawia się w:
Central European Journal of Energetic Materials
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The influence of pistachio shell biochar and barley residues on soil properties
Autorzy:
Mashyekhi, R.
Emami, H.
Asl, F.N.
Powiązania:
https://bibliotekanauki.pl/articles/971273.pdf
Data publikacji:
2020
Wydawca:
Uniwersytet Marii Curie-Skłodowskiej. Wydawnictwo Uniwersytetu Marii Curie-Skłodowskiej
Tematy:
pistachio shells
barley residues
runoff
soil physical properties
sediment
Opis:
This research was conducted to evaluate the effects of biochar and barley residues on some physicochemical properties of silty loam soil and water erosion using water erosion sim- ulator. Biochar was produced from pistachio shells under slow pyrolysis at 500°C under anaer- obic condition. Biochar and barley residues were mixed to soils at three rates of 0, 0.5 and 1% (by weight), and 6.5 kg of soil was filled in trays with length, wide and height of 35 × 20 × 10 cm, respectively. The experiments were performed in 3 repetitions for 4 months as a completely randomized design. The results showed that application of 1% of biochar significantly increased P (phosphorus), K (potassium) and OC (organic carbon) of the soil in comparison with control. Also, application at both levels (0.5 and 1%) of barley residues significantly increased P, K, TN (total nitrogen), and OC. Application of biochar and barley residues significantly increased the mean weight diameter of aggregates, plant available water content, and saturated moisture content and significantly decreased water dispersible clay (p < 0.05). Consequently, the amount of water erosion decreased at the rainfall intensity of 60 mm·h-1 during 20 minutes. Generally, the effect of barley residues to improve soil properties was higher than the biochar.
Źródło:
Polish Journal of Soil Science; 2020, 53, 1
0079-2985
Pojawia się w:
Polish Journal of Soil Science
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The influence of pistachio shell biochar and barley residues on soil properties
Autorzy:
Mashyekhi, Rezvan
Emami, Hojat
Naghizade Asl, Fateme
Powiązania:
https://bibliotekanauki.pl/articles/2088233.pdf
Data publikacji:
2020
Wydawca:
Uniwersytet Marii Curie-Skłodowskiej. Wydawnictwo Uniwersytetu Marii Curie-Skłodowskiej
Tematy:
pistachio shells
barley residues
runoff
soil physical properties
sediment
Opis:
This research was conducted to evaluate the effects of biochar and barley residues on some physicochemical properties of silty loam soil and water erosion using water erosion simulator. Biochar was produced from pistachio shells under slow pyrolysis at 500°C under anaerobic condition. Biochar and barley residues were mixed to soils at three rates of 0, 0.5 and 1% (by weight), and 6.5 kg of soil was filled in trays with length, wide and height of 35 × 20 × 10 cm, respectively. The experiments were performed in 3 repetitions for 4 months as a completely randomized design. The results showed that application of 1% of biochar significantly increased P (phosphorus), K (potassium) and OC (organic carbon) of the soil in comparison with control. Also, application at both levels (0.5 and 1%) of barley residues significantly increased P, K, TN (total nitrogen), and OC. Application of biochar and barley residues significantly increased the mean weight diameter of aggregates, plant available water content, and saturated moisture content and significantly decreased water dispersible clay (p < 0.05). Consequently, the amount of water erosion decreased at the rainfall intensity of 60 mm·h-1 during 20 minutes. Generally, the effect of barley residues to improve soil properties was higher than the biochar.
Źródło:
Polish Journal of Soil Science; 2020, 53, 1; 21-40
0079-2985
Pojawia się w:
Polish Journal of Soil Science
Dostawca treści:
Biblioteka Nauki
Artykuł
Wyświetlanie 1-15 z 302

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