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1

HLA-A and -B type and haplotype frequencies in IgG subclass deficiency subgroups

100%
Barton J. C., Barton J. C., Bertoli L. F., Acton R. T.
Archivum Immunologiae et Therapiae Experimentalis
|
2020
|
tom 68
|
nr 3
2

Sample size determination for interval estimation of variance functions

100%
Niedokos E.
Colloquium Biometryczne
|
2004
|
tom 34
3

The exact moments of estimator of the intraclass correlation coefficient. Balanced model

100%
Niedokos E.
Colloquium Biometryczne
|
1997
|
tom 27
4
Artykuł dostępny w postaci pełnego tekstu - kliknij by otworzyć plik
Content available

Seasonal variability in the Baltic Sea level

84%
Stramska M., Kowalewska-Kalkowska H., Swirgon M.
Oceanologia
|
2013
|
tom 55
|
nr 4
5

Crossbreeding effect on genome stability in pig (Sus scrofa scrofa)

84%
Ciotola F., Albarella S., Scopino G., Carpino S., Monaco F., Peretti V.
Folia Biologica
|
2014
|
tom 62
|
nr 1
6

Life-span of long and rough coated dachshunds in dependence of their inbreed level and sex

84%
Kosowska B., Strzala T., Moska M., Kujalowicz J., Oryszczak E., Piecyk J., Sawczuk M., Slusarczyk J., Wasilewska K.
Electronic Journal of Polish Agricultural Universities. Series Veterinary Medicine
|
2005
|
tom 08
|
nr 4
7

Changes in spring and summer phenology in Poland – responses of selected plant species to air temperature variations

84%
Jablonska K., Kwiatkowska-Falinska A., Czernecki B., Walawender J. P.
Polish Journal of Ecology
|
2015
|
tom 63
|
nr 3
Many studies on the changes in the rhythm of nature (animate and inanimate) revealed that plants are good indicators of climate change, because they are responsive to air temperature variations. There is a clear trend towards earlier onset of plant development in Poland, especially for spring phenological events as flowering and leafing. The main objective of this study was to identify phenological tendencies of selected plant indicator species in Poland and to explore the statistical relationship between mean phenological onset date against mean monthly air temperature. Phenological observations of 9 plant species: Corylus avellana L., Tussilago farfara L., Padus avium L., Taraxacum officinale F.H. Wiggers coll., Betula pendula Roth, Syringa vulgaris L., Aesculus hippocastanum L., Robinia pseudoacacia L., Tilia cordata Mill. from 25 locations acquired in the period 1951–1990 were used. The results proved that phenological changes were the reaction of plants to air temperature variations. For spring and summer phenophases, the mean correlation coefficient was negative — higher air temperature was related to earlier onset dates. The advance of spring and summer phenology was estimated at -2.2 days per 1°C. Majority of phenological events were the most significantly correlated with mean monthly air temperature of the preceding months. Phenological trends observed in Poland were mainly negative (73% of analysed stations), significant (22%) but diversified between the selected species. Linear regression analysis of the onset dates against year (including regression coefficient) showed the highest values for Corylus avellana flowering: -0.24 days per year (20% significant) and Betula pendula leaf unfolding: -0.18 days per year (33% significant). Robinia pseudoacacia showed significant advances (72% of negative trends were significant) in a summer season with an average rate of -0.3 days per year. Whereas in case of Tilia cordata no tendencies to advance has been proved.
8

Topographic differences play a limited role on species distribution in a sub-tropical forest in South China

84%
Gong G.-Q., Huang Z.-L., Ye W.-H., Cao H.-L., lian J.-Y., Lin G.-J., Wei S.-G., Li L., Bin Y., Kong B., Li B.-W.
Polish Journal of Ecology
|
2013
|
tom 61
|
nr 3
Habitat association test has been regarded as an effective way to evaluate the relative role of niche differentiation in a community. Topographical attributes are often selected as surrogates of niche processes. However, the inference for relative role of niche differentiation is likely problematic if the spatial dependence of plant community on underlying spatiallystructured topographic variables is not accounted for. In this study, we used the torus shift and principal component analysis (PCA) to resolve this problem, and tested the habitat associations by adjusted-SD test in a sub-tropical evergreen broad-leaved forest in south China. The result revealed that minority of 100 common species were specialist, among which 8 species associated with first two PC axes (accounted for 98% of total eigenvalue and contributed mainly by mean elevation and aspect) and 22 species associated with last two PC axes (contributed by slope and convexity). In conclusion, we found the niche processes represented by topographical attributes play a limited role in the Dinghushan sub-tropical evergreen broad-leaved forest plot. Further study should include more habitat variables to examine the habitat associations.
9
Artykuł dostępny w postaci pełnego tekstu - kliknij by otworzyć plik
Content available

Wyniki badań nad wpływem upośledzenia słuchu u dzieci szkolnych na ich rozwój społeczny i postępy w nauce

67%
Radziminski A., Piotrowski W., Majcherska-Matuchnik B.
Roczniki Państwowego Zakładu Higieny
|
1957
|
tom 08
|
nr 4
10

Evaluation of antioxidant activity of medicinal plants containing polyphenol compounds. Comparison of two extraction systems

67%
Kratchanova M., Denev P., Ciz M., Lojek A., Mihailov A.
Acta Biochimica Polonica
|
2010
|
tom 57
|
nr 2
This study investigates the influence of extraction system on the extractability of polyphenol compounds and antioxidant activity of various medicinal plants. Oxygen radical absorbance capacity (ORAC) and total polyphenol content of 25 Bulgarian medicinal plants subjected to water or 80 % acetone extractions were investigated and compared. The type of extragent significantly influenced the efficiency of the polyphenol extraction and the antioxidant activity. In all cases ORAC results and total polyphenol content were higher for acetone extraction than for water extraction. The acetone extract of peppermint had the highest ORAC value - 2917 μmol Trolox equivalent (TE)/g dry weight (DW) and polyphenol content - 20216 mg/100 g DW. For water extraction thyme exhibited the highest ORAC antioxidant activity - 1434 μmol TE/g DW. There was a significant linear correlation between the concentration of total polyphenols and ORAC in the investigated medicinal plants. It can be concluded that the solvent used affects significantly the polyphenol content and the antioxidant activity of the extract and therefore it is recommended to use more than one extraction system for better assessment of the antioxidant activity of natural products. Several of the investigated herbs contain substantial amounts of free radical scavengers and can serve as a potential source of natural antioxidants for medicinal and commercial uses.
11

Analysis of measurements and proportion of larynx of young and adult individuals of domestic cattle

67%
Wysocki J., Kielska E., Charuta A., Janiuk I., Reymond J.
Electronic Journal of Polish Agricultural Universities. Series Veterinary Medicine
|
2008
|
tom 11
|
nr 1
12

Gross Motor Skills in Navajo American Indian children one year or under

67%
Stratman S. K.
Studies of Human Ecology
|
1992
|
tom 10
13

Latent factors in body build of newborns

59%
Antoszewska A.
Studies of Human Ecology
|
1992
|
tom 10
14

Zastosowanie techniki IPA w badaniach jakosci uslug

51%
Pujdak-Brzezinka M.
Marketing i Rynek
|
2005
|
tom 12
|
nr 12
21-27
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