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1
Artykuł dostępny w postaci pełnego tekstu - kliknij by otworzyć plik
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Rezul'taty eksperimental'nykh issledovanijj barabannogo dozatora s jacheistojj poverkhnost'ju dlja sypuchikh materialov

100%
Milko D.
Motrol. Motoryzacja i Energetyka Rolnictwa
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2015
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tom 17
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nr 9
2
Artykuł dostępny w postaci pełnego tekstu - kliknij by otworzyć plik
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Obosnovanie vybora ugla naklona kanalov pnevmaticheskikh separatorov

86%
Bakum N., Krekot N., Ol'shanskijj V., Vinokurov N., Koziy A., Votchenko A.
Motrol. Motoryzacja i Energetyka Rolnictwa
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2015
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tom 17
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nr 7
3

On the relative error of estimation of coefficient of variation under normality. The choice of sample size

86%
Tarasinska J.
Colloquium Biometryczne
|
2004
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tom 34
4
Artykuł dostępny w postaci pełnego tekstu - kliknij by otworzyć plik
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Parameter optimization dosator of the seeding of a sugar beet on the coefficient variation of intervals

86%
Belodedov V., Nosko P., Boyko G., Fil P., Mazneva M.
Teka Komisji Motoryzacji i Energetyki Rolnictwa
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2012
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tom 12
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nr 4
Results of multifactorial experiment by orthogonal planning for four factors: height and diameter of seed tube, rotary speed of seed disk and speed movement of seeder are presented. Experiment results were analyzed according to generally accepted methods. Adequate model was received. Influence of each factor on coefficient of variation intervals between seeds and optimal value of each factor were determined.
5
Artykuł dostępny w postaci pełnego tekstu - kliknij by otworzyć plik
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Some maintenance problems of the drip irrigation in Poland

86%
Jeznach J.
Annals of Warsaw University of Life Sciences - SGGW. Land Reclamation
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2007
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nr 38
41-47
Drip irrigation system will play in the future a signifi cant role in fulfi lling the requirements of intensive, energysaving agricultural production. Total area under microirrigation in Poland can be now estimated as about 10 000 hectares. Drip irrigation is applied mainly in orchards, vegetable farms and greenhouses. The investigations on drip irrigation have shown a high infl uence of the agricultural conditions on the operation and reliability and productivity effects of the irrigation system. Paper present the investigation of the operation of drip irrigation systems in various regions of Poland. The analysis is based on the results of the manufacture coeffi cient of variation Cv, emitter exponent n, uniformity coeffi cient and detailed observation of the work time, breaks, failures and any other damages to the system.
6
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Poteri urozhaja pri korrektirujushhem remonte mashiny i pri obsluzhivanii po sostojaniju pered tekhnologicheskojj operaciejj

86%
Shevchenko S.
Motrol. Motoryzacja i Energetyka Rolnictwa
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2015
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tom 17
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nr 7
7

Assessment of the usefulness of patternators for the control of the technical state of the crop sprayers in use

86%
Sawa J.
Electronic Journal of Polish Agricultural Universities. Series Agricultural Engineering
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1999
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tom 02
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nr 2
The paper presents the results of studies on spray nozzles, placed on a spray boom, hanging over a patternator. It was found out that when the location of particular nozzles is changed, the variation coefficient of distribution of the fall of the sprayed liquid (C.V.) changes as well. The change of C.V. is especially high for the nozzles which are technically worn out. The studies showed that while testing the nozzles on a patternator, the microclimate in the area of the site undergoes a change.
8

Parameter optimization using coefticient of variation of intervals for one-seed sowing apparatus with horizontal disk during maize seeding

72%
Belodedov V., Nosko P., Fil P., Stavitskiy V.
Teka Komisji Motoryzacji i Energetyki Rolnictwa
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2007
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tom 07
9
Artykuł dostępny w postaci pełnego tekstu - kliknij by otworzyć plik
Content available

Recent sea surface temperature trends and future scenarios for the Mediterranean Sea

72%
Shaltout M., Omstedt A.
Oceanologia
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2014
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tom 56
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nr 3
10

Seed mass increase along altitude within four Saussurea (Asteraceae) species in Tibetan Plateau

58%
Wu G.-L., Tian F.-P., Ren G.-H., Liu Z.-H.
Polish Journal of Ecology
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2011
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tom 59
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nr 3
Seed mass is a critical lifehistory character in seed evolutionary ecology. Plant species can present responses in seed mass to environment stresses. We tested the hypotheses that seed mass was positively correlated with altitude within species. We selected four congeneric Saussurea species as study objects, and collected their seeds along altitudinal gradients (2100–4200 m a.s.l.) in the alpine area of the Qinghai-Tibetan Plateau, China. Results showed that mean seed mass of the four species were significantly affected by altitude (P <0.001). There was a general trend of an increase in seed weight with altitude among the populations of the four species. In addition, mean seed mass of four species were not significantly different, but all presented a bigger coefficients of variation within species along altitude gradients. Our results indicate selection pressure within species, with larger seeds occurring at higher altitudes.
11
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Analysis of growth and increment in height of common oak (Quercus robur L.)

58%
Kazmierczak K., Pazdrowski W., Manka K., Szymanski M., Nawrot M.
Colloquium Biometricum
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2008
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tom 38
12
Artykuł dostępny w postaci pełnego tekstu - kliknij by otworzyć plik
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Variability analysis of selected quantitative characteristics in edible potato varieties

58%
Bombik A., Rymuza K., Markowska M., Stankiewicz C.
Acta Scientiarum Polonorum. Agricultura
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2007
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tom 06
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nr 3
The paper presents the variability analysis of some quantitative characteristics, that is of tuber yield, starch content and yield, dry matter content and yield and vitamin C content in selected edible potato varieties. Reciprocal relations of variance components calculated and their percentage share in the total variability were a measure of variability evaluation for the characteristics examined. Moreover, the variability of the characteristics was characterised by means of the classical variability coefficient. It has been found that tuber yield and vitamin C content variability was determined mainly by the interaction effects of years and the factors examined, as well as the experimental error. The respective values were as follows: 44.3% and 34.7% for tuber yield, and 42.2% and 46.2% for vitamin C. The starch content was in 47.5% modified by the effects of the main factors (including 35.0% for years) and the error effect (39.0%). A similar interaction was observed in the case of dry matter content variability, but the error was 52.4%. Starch and dry matter yields were determined mainly by interaction effects of the years and the examined factors (40.7% and 39.9%, respectively) as well as the experimental error (32.2% of the total variability for both traits). The highest changes expressed as the values of the coefficient of variation were found for tuber yield, dry matter yield and starch yield.
13
Artykuł dostępny w postaci pełnego tekstu - kliknij by otworzyć plik
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Assessing herbicide leaching from field measurements and laboratory experiments

58%
Cuevas M. V., Calderon M. J., Fernandez J. E., Hermosin M. C., Moreno F., Cornejo J.
Acta Agrophysica
|
2001
|
tom 57
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