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1
Content available Spatiotemporal variation of terrestrial carbon sequestration in tropical urban area (case study in Surakarta District, Indonesia)
100%
Danardono D. , Sunariya M. I. T. , Fikriyah V. N. , Cholil M.
Quaestiones Geographicae
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2021
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tom 40
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nr 3
5-20
EN
The value of terrestrial carbon sequestration in urban areas, due to lack of vegetation as a carbon sink, is rarely studied. In fact, urban areas have high carbon emission values, which must be minimised. On the other hand, the value of carbon sequestration in urban areas is very dynamic due to natural factors from the environment and non-natural factors from anthropogenic activities. The main objectives of this study are to identify the carbon dioxide sequestration in urban areas, especially in tropical climates, and to determine the dynamics of carbon sequestration in urban areas for a year. The results show that carbon sequestration in tropical urban areas has a significant value compared with urban areas in temperate climates. This condition happens because there are still green open spaces in gardens and agricultural lands. The value of carbon sequestration in this tropical urban area experiences monthly dynamics caused by rainfall variation and anthropogenic activities, such as land conversion and plant type conversion in agricultural lands.
2
Unibiased high resolution method of EEG analysis in time-frequency space
75%
Blinowska K. J. , Durka P. J.
Acta Neurobiologiae Experimentalis
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2001
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tom 61
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nr 3
3
Content available Dynamic changes of immunoglobulin concentrations in pig colostrum and serum around parturition
63%
Markowska-Daniel I. , Pomorska-Mol M. , Pejsak Z.
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tom 13
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nr 1
21-27
EN
The aim of the study was the determination of IgA, IgM and IgG concentrations in porcine serum and colostrum, in order to evaluate their variations in the perinatal period, as well as to clarify whether there is a correlation between colostrum intake, initial level of immunoglobulins (Ig) in piglet serum and development of their own immunity. The mean IgA, IgM and IgG concentrations in sow serum 10 days before parturition were 1.58, 6.12 and 39.56 mg/ml, respectively. Seven days later only the IgG level was insignificantly lower (34.94 mg/ml, p=0.55), while concentrations of IgA and IgM increased to 2.25 and 7.25 mg/ml, respectively (p=0.23 and 0.62, respectively). The mean initial IgG concentration in colostrum at farrowing was 118.5 mg/ml and differed between sows. The average value of IgA in colostrum at birth was 23.8 mg/ml and decreased to 7.85 mg/ml at 6 hours (h) and to 4.59 mg/ml at 24 h after the onset of farrowing. IgM concentration at birth was 12.1 mg/ml and decreased to 4.23 mg/ml at 24 h postpartum. Positive relationships were found between concentrations of IgM and IgA in serum of piglets at 14 and 56 days of life (r = 0.41 and 0.80, respectively, p≤0.05) as well as for IgG concentration in the piglets serum at 7 days and 56 days of age (r = 0.48, p≤0.05). The above observations suggest that there is a correlation between the level of Ig in piglet serum in the first days of life and improvement of their own immunity.
4
Content available Results of researches by the numeral methods of vertical influences on the way of carriages of industrial transport at the railroad ties SB 3-0
63%
Darenskiy A. , Vitolberg V.
Teka Komisji Motoryzacji i Energetyki Rolnictwa
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2012
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tom 12
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nr 4
EN
Determined the impact of special power and special cars on the road transport industry with concrete sleepers type SB 3-0. The dependences of the dynamics of changes in the coefficients depending on the type of rolling stock and the life path
RU
Определены силовые воздействия специальных и специализированных вагонов промышленного транспорта на пути с железобетонными шпалами типа СБ 3-0. Получены зависимости изменения коэффициентов динамики в зависимости от типа подвижного состава и срока службы пути.
5
Diversity of aquatic molluscs in a heterogenous section of a medium-sized lowland river-floodplain system: an example of intermediate disturbance hypothesis
63%
Jurkiewicz-Karnkowska E.
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nr 4
EN
Natural river-floodplain systems are heterogenous mosaics of lotic and lentic habitats subjected to dynamic temporal changes connected with hydrological regime, which promote high biological diversity. Mollusc assemblages of three habitat types within 10 km section of the lower course of the Liwiec River (East Poland) — the main river channel (MC), the secondary channel (SC) and remnants of the former river channel (FC), were compared to find if they were structured by heterogeneity resulting from hydrological connectivity and disturbance intensity related to it. The influence of selected qualitative environmental variables was also analysed. The investigations were carried out at 19 sites during late spring and late summer in the years 2012–2014, molluscs were sampled from approximately 1 m² of the bottom with a hand net, and from macrophytes with a frame. Rich aquatic malacofauna (36 species including 22 gastropods and 14 bivalves) was found within the study area including three species of special interest: Anisus vorticulus (Troschel), Unio crassus Phillipsson and Anodonta cygnea (L.). Bivalves Sphaerium corneum (L.) and Pisidium spp dominated within MC, in SC a few common and ubiquitous species (mainly snails) prevailed, pulmonate snails and some small bivalves of the genus Pisidium were the most numerous molluscs within FC. Principal Component Analysis revealed that current velocity, channel width, bottom sediments and macrophyte abundance were important environmental factors structuring mollusc assemblages. Considerable variation in species composition (β diversity), especially between the main river channel and two other habitat types (β²) was found. The highest values of mean species richness, Shannon true diversity and Shannon index found in the secondary channel were in accordance with intermediate disturbance hypothesis.
6
Content available The structure of production factors in farms and their productivity. the case of vegetable farms in Poland
63%
Filipiak T. , Wicki L.
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tom 23
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nr 3
7
Content available Reactive oxygen species and DNA methylation changes in wounded maize leaves
63%
Lewandowska-Gnatowska E. , Polkowska-Kowalczyk L. , Barciszewska M. , Szczegielniak J. , Barciszewski J. , Muszynska G.
BioTechnologia. Journal of Biotechnology Computational Biology and Bionanotechnology
|
2013
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tom 94
|
nr 2
8
Content available Technological environment as a factor of development for enterprises providing accommodation services
51%
Kuzmicki M. , Kus A.
|
|
nr 3
9
Inorganic phosphorus and nitrogen modify composition and diversity of microbial communities in water of mesotrophic lake
51%
Chrost R. J. , Adamczewski T. , Kalinowska K. , Skowronska A.
Polish Journal of Microbiology
|
2009
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tom 58
|
nr 1
77-90
EN
The effects of inorganic nutrients (N, P) enrichment of mesotrophic lake water on changes in bacterial and protistan (heterotrophic nanoflagellates and ciliates) communities compositions were studied in the mesocosm experiment. Phosphorus (PO₄³⁻) and nitrogen (NH₄⁺) alone and in combination were added to three types of experimental mesocosms. Mesocosms results suggested that simultaneous addition of P and N stimulated phytoplankton growth and production rates of bacterial biomass its turnover rate. Strong positive correlations between chlorophyll a and bacterial secondary production rates suggested that bacteria were mainly controlled by organic substrates released in course of phytoplankton photosynthesis. Both nutrients increased distinctly protistan biomass and resulted in the shift in ciliate community composition from algivorous to large omnivorous species. The response of bacterial numbers and biomass to nutrients addition was less evident. However, intensive grazing caused their dynamic changes. Fluorescence in situ hybridization (FISH) revealed only small changes in bacterial taxonomic composition. There was an apparent shift in dominance from Cytophaga-Flavobacterium to the Alphaproteobacteria group in the mesocosm with simultaneous addition of P and N, which positively related to increased abundance of bacterivorous protists. Experiment demonstrated that inorganic N and P nutrients directly influenced the bottom-down control of microbial communities, which had a crucial effect on morphological diversity of bacteria.
10
Content available Effects of modified atmosphere package on preservation of strawberries
51%
Zhang M. , Xiao G. , Peng J. , Salokhe V. M.
International Agrophysics
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2003
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tom 17
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nr 3
11
Dynamic changes in the tubulin cytoskeleton during oogenesis and early development in the anuran amphibian Xenopus laevis [Daudin]
51%
Palecek J. , Ubbels G. A.
Folia Histochemica et Cytobiologica
|
1997
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tom 35
|
nr 1
12
Immunoreceptor signaling in innate and adaptive immune system cells
44%
Swat W.
|
2011
|
tom 59
|
nr 5
13
Dynamika zmian zawartości wapnia, magnezu i fosforanów w kościach udowych kurcząt
38%
Dolegowska B. , Machoy Z. , Chlubek D.
Biuletyn Magnezologiczny
|
2001
|
tom 06
|
nr 2
125-134
PL
Zbadano zmiany zawartości wapnia, magnezu i fosforanów w kościach udowych kurcząt rasy Starbro w wieku od 1. do 50. dnia życia. Wapń i magnez oznaczano metodą absorpcyjnej spektrometrii atomowej. Fosforany oznaczano metodą spektrofotometryczną. Wyniki analiz podzielono na 5 grup i poddano je analizie statystycznej. Stwierdzono istotną zależność zmian zawartości wapnia, magnezu i fosforanów od wieku (p<0.05) oraz istotne statystycznie różnice (pcO.OOl) pomiędzy średnimi zawartościami wapnia, magnezu i fosforanów we wszystkich elementach strukturalnych kości udowych kurcząt. Stwierdzono liczne korelacje pomiędzy pierwiastkami ze wszystkich tkanek kości kurcząt (p<0.05).
EN
Age-dependent changes of calcium, magnesium and phosphates content in all structural elements of femoral bones of Starbro line chickens aged 1 to 50 day of life were examined. Calcium and magnesium were determined by atomic absorption spectrometry Phosphates were analyzed with spectrophotometric method. Results were divided into 5 groups and subjected to statistical analysis. Significant age-dependent changes in calcium, magnesium and phosphates content (p<0.05) and statistically significant differences (pcO.OOl) between mean content of calcium, magnesium and phosphates in all structural elements of femoral bones of chicken were ascertained. Among elements in each tissues of chicken bones numerous correlations were obtained (p<0.05).
14
Content available Sezonowa dynamika zmian zespolow peryfitonowych plytkiego litoralu jeziora Usciwierz [Polesie Lubelskie]
38%
Mieczan T.
Acta Agrophysica
|
2002
|
tom 67
173-179
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