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Rozkład stężeń pyłu zawieszonego PM10 w Poznaniu

Urbaniak W., Narożny M., Górecki T., Eitner K., Gawęda T., Lipiecka-Sęk S.

Przegląd Komunalny

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2015

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nr 5

73--74

PL

Analiza statystyczna propagacji oraz czasowego występowania emisji materii zawieszonej, powszechnie określanej mianem pyłów, nabrała w ostatnich latach szczególnego znaczenia. Również na terenie Poznania pomiary stężenia pyłu zawieszonego były przedmiotem badań przeprowadzonych przez Wielkopolski Inspektorat Ochrony Środowiska.

EN

Statistical analysis of the occurrence of dust emissions recently gained particular importance. On the one hand, there are studies that correlate the impact of suspended matter on human health, on the other hand is a gradual increase in this type of pollution associated with both human activities and natural emission. The paper presents the results of the measurements of PM10 Wielkopolski Environmental Protection Inspectorate of two spaced apart monitoring stations in the city of Poznan for the years 2005-2010. The factors that are correlated with the concentrations of particulate matter have been identified.

2

Biomass dynamics in young silver birch stands on post-agricultural lands in central Poland

Zasada M., Bijak S., Bronisz K., Bronisz A., Gawęda T.

Drewno : prace naukowe, doniesienia, komunikaty

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2014

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vol. 57, nr 192

29--39

EN

The paper analyses the production and allocation of biomass in young, spontaneous silver birch afforestation occurring on post-agricultural lands in the Mazowsze region (central Poland). We investigated 114 sample plots of age varying from 1 to 19 years. During the first 15 years after their establishment on abandoned farmland, the naturally regenerated silver birch stands produced on average approximately 75 tons of dry biomass per hectare. The major (50–70%) part of this biomass was stored in the tree stems and this share increased with age. The fractions of biomass in the foliage and roots decreased over time, while the share of biomass in the branches remained rather constant. The significant age-dependency of the allometric relationships suggested the need to use age-sensitive biomass expansion factors to estimate the biomass from the stem volume.

3

Allocation of elements in a chronosequence of silver birch afforested on former agricultural lands

Gawęda T., Małek S., Zasada M., Jagodziński A. M.

Drewno : prace naukowe, doniesienia, komunikaty

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2014

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vol. 57, nr 192

107--

EN

Research on the effect of birch regeneration on changes occurring in the environment on former farmlands included a quantitative and qualitative analysis of the biomass growing on the research plots. Five experimental plots were selected in the Mazovia region: two in Dobieszyn and the Kampinos National Park and one in Kozienice. The analysis performed on each plot was concerned with the amount and chemical composition of biomass in four patches of vegetation, characterised by the different ages of the birch trees growing there. The vegetation patches were classified according to age group, i.e. I: 1–4 years old, II: 5–8 years old, III: 9–12 years old and IV: over 12 years old. Biomass samples were collected in the field and determined in kg DM/ha using the following components: roots, stem, bark, branches, assimilation apparatus, litterfall and the total biomass of the other (except birch) plants. For all the above-mentioned groups, the content of the elements N, C, S, Ca, K, Mg, Na, P, Mn, Cu, Fe, Zn, Pb, and Cd was determined. This allowed us to obtain both the values of the concentrations of particular substances and their allocation in both the organic matter and litterfall. The aim of the research was to discover whether the allocation of elements changes with the age of birch growing on former farmland.

4

Self-concerted hydrophobicity scale based on the ACDlogP of a combination of 8000 tripeptides and its application for identification of protein active sites

Eitner K., Koch U., Gawęda T., Spieser S., Fornalik A., Hoffmann M.

Ars Separatoria Acta

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2008

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No. 6

7-14

EN

Partition coefficients, expressed as logP, were calculated using Advanced Chemistry Development software (ACDlogP) [1] of all combinations of three amino acids (8000 tripeptides). Using our proprietary script, we generated a combination of 8000 tripeptides of 20 amino acids in the FASTA format and, subsequently, full atom Cartesian coordinates were generated. The ACDlogP’s of the generated tripeptides were calculated. Using the Kyte-Doolittle amino acid hydrophobicity scale [2, 3], the value of the correlation coefficients with the calculated ACDlogP values was determined. Hydrophobicity values were assumed as the arithmetic mean of the hydrophobicity of the three amino acids in the tripeptide. Optimisation of the theoretical hydrophobicity scale by minimisation of the correlation coefficient between the calculated ACDlogP values and the hydrophobicity for the tripeptides provided amino acid hydrophobicity; on this basis, the amino acids were divided into 7 groups. The new scale was normalised and implemented using the fuzzy-oil-drop model method to determine the theoretical protein active site of the 1HCK protein based on lipophilic hot spots on the protein surface. The results were compared with the respective results for the Kyte-Doolittle scale and the actual active site with ATP as the ligand.

5

Charakterystyka chemiczna wód powierzchniowych zlewni Potoku Dupniańskiego oraz Olzy w Beskidzie Śląskim

Małek S., Gawęda T.

Zeszyty Naukowe. Inżynieria Środowiska / Uniwersytet Zielonogórski

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2004

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nr 131(12)

257-264

PL

Przedstawiona praca przedstawia różnice w wybranych właściwościach fizyko-chemicznych wód pomiędzy dopływem (Potok Dupniański - zlewnia zalesiona) a odbiornikiem (rzeką Olzą - zlewnia rolnicza i zurbanizowana). Jakość wód potoku poza okresami roztopowymi jest znacznie wyższa. Czynnikiem determinującym przynależność do poszczególnych klas czystości jest przeważnie odczyn ich wód. Wody odbiornika są gorszej jakości, o której decydują często zawartości nieorganicznych form azotu.

EN

Presented paper contain difference in chosen physic-chemical water parameters between inflow (Potok Dupniański - forest catchment) and outflow (Olza river - agricultural and urban catchment). The stream water quality, beside the snow melting period is higher. The main and determining element for water classifies is their reaction. Waters from Olza river are of pure quality, which is the effect of the inorganic nitric form.

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Chemizm wód potoku Dupniańskiego w Beskidzie Śląskim

Małek S., Gawęda T.

Czasopismo Techniczne. Środowisko

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2002

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R. 99, z. 4-Ś

85--94

EN

In order to confirm the hypothesis on the variability of water quality in the Potok Dupniański stream in the Silesia Beskid, three sampling sessions have been organized in May. July, and September of 2001. The catchment located in Southern Poland in Beskid Śląski (N 49°35', E 18°50') close to Slovakia and Czech border, has an area of 1,6787 km2. Sampling covered field conductivity and pH in 46 characteristic point of the stream (Tab. 1). The sampling points were selected during the visitation of the sight and the basic criteria of the selection were specific geomorphologic and hydrological conditions and changes in the specific composition and development phases of the tree stand. Moreover, one of the sampling points has been established on the river Olza, which is an intake of water from the stream (point of comparison). Not only the main stream was studied but also inlets and springs. On the basis of the results of tests, 20 further sampling points were selected (Tab. 1). From these points water samples were collected for lab analyzes in November 2001. The analyzes of concentrations of F, Cl, HCO3, NO3, SO4, Na NH4, K, Ca, Mg, Fe, Mn and, Zn were performed with the use of the DIONEX-DX-320 ion chromatograph. In addition, conductivity and pH were also analyzed. As a result of these studies it has been found out that the springs in this area come from the active exchange zone and are well supplied by the infiltration of rainfall and therefore their quality is largely affected by the quality of rainfall sifted through and enriched by all horizons of forest ecosystems and the soil. Springs were found as a HCO3 - SO4. It was noticed a effect of different age of spruce stands - the youngest and the older one decreasing pH reaction and conductivity., whereas in beech stands were noticed the highest value in springs and in streams passing though. Moreover, basically able shortage of nitrogenous forms Nitrogen in mild initial sections of some streams, which may be an evidence of intensive development of microorganisms in these sections. It was also found the dependence of releasing Manganese and Zinc from the decrease in pH down to 5.5 with the intensively absorbing Manganese young development phases tree stands hamper its outflow with stream water. It was noticed higher quality of water flowing out of the studied catchment than that from the river Olza, which is an intake of water from the Dupniański stream, however, an increased content of ammonium Nitrogen in the stream comes from the decomposition of matter (litter). At the same time, in the fast flowing streams with stony streambeds the process of infiltration is limited (Tab. 1, 2).