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A novel application of building demolition waste for removal benzene from aqueous solutions

100%

Alquzweeni S. S., Hassan A. A., Alkizwini R. S.

Przegląd Naukowy. Inżynieria i Kształtowanie Środowiska

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2021

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tom 30

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nr 1[91]

2

The equilibrium function as an indicator of symmetry of functional status of arm wrestlers

75%

Chernogorov D. N., Matveyev Y. A., Bezzubov A. A.

Prace Naukowe Akademii im. Jana Długosza w Częstochowie. Kultura Fizyczna

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2017

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tom 16

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nr 1

The article is devoted to the study of asymmetry in physical development of arm wrestling athletes at the stage of sports perfection. It presents the results of a pedagogical experiment with the use of static motor-cognitive tests and stabilometry in the detection of asymmetry and proves the effectiveness of the developed system of physical training, based on the achieved improvements of the indicators of equilibrium function of arm wrestlers compared to the standard training system.

3

Physicochemical analysis of phosphatidylcholine-ceramide system in bilayer lipid membranes

75%

Naumowicz M., Petelska A. D., Figaszewski Z. A.

Acta Biochimica Polonica

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2008

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tom 55

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nr 4

721-730

Electrochemical impedance spectroscopy was used for the study of two-component lipid membranes. Phosphatidylcholine and ceramide were to be investigated, since they play an important biochemical role in cell membranes. The research on biolipid interaction was focused on quantitative description of processes that take part in a bilayer. Assumed models of interaction between amphiphilic molecules and the equilibria that take place there were described by mathematical equations for the studied system. The possibility of complex formation for two-component system forming bilayers was assumed that could explain the deviation from additivity rule. Equilibria were described by mathematical equations that were further verified experimentally. The determined values of parameters (stability constant, molecular area of complex, capacitance and conductance of the lipid membranes formed from molecules and complexes) were used for calculation of model curves. The comparison of model curves and experimental points verified the assumed model

4

Consequences of neglecting density-dependent effects in steady-state properties of phytoplankton models

75%

Szeligiewicz W.

Polskie Archiwum Hydrobiologii

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1997

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tom 44

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nr 3

5

Bacteria in soil at fungi-community reduction resulting from captan application

75%

Kaszubiak H., Muszynska M.

Polish Journal of Environmental Studies

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1996

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tom 05

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nr 5

In incubation experiments the microbiological equilibrium of two sandy soils was unsettled using captan in a dose which considerably influenced fungi. The reduction of the fungal community contributed to an intensive multiplication of the bacteria detectable by the cultural method, particularly of the number of their eutrophic forms. However, the changes in the discussed ecotrophic group of bacteria were not accompanied by an increase in the total number of the soil bacteria community detectable with the help of the microscope and consisted for the most part from oligotrophic bacteria. Moreover, there was a continous declining tendency and overall microbial activity of the soil was in most instances reduced. All the described effects were intensified by the addition of fresh organic matter.

6

Evaluation of mixed-salt effects on thermodynamic and kinetic parameters of RNA polymerase - promoter DNA complexes in terms of equivalent salt concentrations. General applicability to DNA complexes

63%

Lozinski T., Wierzchowski K. L.

Acta Biochimica Polonica

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2009

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tom 56

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nr 4

695-702

Facile evaluation of mixed-salt effect on the strongly salt-dependent thermodynamic and kinetic parameters of protein-DNA complexes is of importance for relevant biochemical and biophysical studies. In pursuit of this aim, binding isotherms for open transcription complex (RPo) of Escherichia coli RNA polymerase (R) at λPR promoter DNA (P) were determined as a function of salt concentration in pure NaCl and Tris/HCl solutions, and as a function of [NaCl] in the presence of fixed concentrations of MgCl2 and Tris/HCl. A concept of equivalent salt concentrations, i.e. concentrations at which the binding equilibrium constant is the same, was introduced and applied for prediction of binding isotherms in mixed salt solutions. Full coincidence between the experimental and predicted isotherms indicated that individual contributions of salts to the global salt-effect are additive in a broad range of salt concentrations. A generalized formula for calculation of salt equivalents characteristic for any of the thermodynamic or kinetic parameters of a complex (e.g., free energy, binding equilibrium and association/dissociation kinetic rate constants) is presented and its applicability to a number of protein-DNA complexes and dsDNA melting demonstrated using authors' own and literature data.

7

Oxidant - antioxidant balance in host - parasite relationship

63%

Hadas E., Boczon K.

Wiadomości Parazytologiczne

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1998

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tom 44

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nr 3

8

Physicochemical research on adsorption and bonding of fungicides applied in wood preservation with lignocellulosic materials

51%

Zabielska-Matejuk J., Stangierska A., Przybylski P.

Folia Forestalia Polonica. Series B - Drzewnictwo

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2009

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tom 40

9

Alternative stable states in floodplain ecosystems

51%

Dokulil M. T., Donabaum K., Pall K.

International Journal of Ecohydrology and Hydrobiology

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2006

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tom 06

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nr 1-4

37-42

10

Removal of dissolved metals by activated carbon from road runoff in batch systems – equilibrium and kinetic

51%

Pawluk K., Fronczyk J.

Annals of Warsaw University of Life Sciences - SGGW. Land Reclamation

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2015

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tom 47

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nr 1

Activated carbon is an effective sorbent for removing organic and inorganic contaminants from aqueous solutions. In conducted experiments, granulated activated carbon (GAC) was used to examine the adsorption processes of heavy metals (Cd, Cu, Ni, Pb and Zn). Studies (performed in batch system) were carried out as a function of time, heavy metals concentration and pH values. The obtained results show that GAC effectively removes mentioned metals. Numerous kinetic models were used to investigate the mechanism of adsorption processes. Using the Langmuir isotherm, the maximum adsorption capacities were calculated to be 3.010, 3.662, 4.430, 3.800 and 4.169 mg·g–1 for Cd, Cu, Ni, Pb and Zn, respectively, in neutral conditions and 2.684, 2.578, 3.482, 2.592 and 2.253 mg·g -1 in acidic conditions.

11

The gamma-glutamyl transferase activity and non-protein sulfhydryl compounds levels in rat kidney of different age groups

51%

Wlodek P., Sokolowska M., Smolenski O., Wlodek L.

Acta Biochimica Polonica

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2002

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tom 49

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nr 2

The present work was aimed to obtain information about age-dependent changes of γ-glutamyltransferase (GGT) activity and the levels of non-protein sulfhydryl compounds (NPSH) in rat kidneys. In addition, protein-bound cysteine (PB-Cys), sulfane sulfur compounds and reactive oxygen species (ROS) were estimated. The results indicate that the activity of GGT and NPSH levels in the kidneys are reduced with age. At the same time, a significant increase in the level of protein-bound cysteine was observed. Simultaneously, the content of sulfane sulfur compounds was increased in the group of the oldest animals. These findings indicate that the capacity for extracellular glutathione degradation and, in consequence, the availability of cysteine for intracellular glutathione biosynthesis may be impaired. The increased PB-Cys level indicates potentiation of the thiolation reaction, i.e. development of protein-mixed disulfides. These results reveal age dependent disturbances in the thiol-disulfide equilibrium in the kidneys which leads to an imbalance between pro- and antioxidatory processes.

12

Effect of ethanol on structural transitions of DNA and polyphosphates under Ca2plus ions action in mixed solutions

51%

Hackl E. V., Blagoi Y. P.

Acta Biochimica Polonica

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2000

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tom 47

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nr 1

In the present work using the IR spectroscopy method the effect of ethanol on structural transitions of DNA and polyphosphates under the action of Ca2+ ions in mixed solutions containing ethanol (0-25 vol.%) was studied. It was shown that, on its interaction with Ca2+ ions, in aqueous and mixed solutions DNA becomes transformed into compact form. With the increase of concentration of ethanol the degree of Ca2+-induced DNA compactisation rises. It was found that, in mixed solutions containing ethanol, Ca2+-induced DNA compactisation depends not only on the solution's dielectric permeability but also on the solution structure. On stabilisation of the water structure in the presence of low ethanol concentrations a stabilisation of the DNA macromolecule occurs that leads to the increase of the Ca2+ ion concentration necessary for DNA compactisation. Comparison of the effects of ethanol on Ca2+-induced structural transitions in DNA and polyphosphates in mixed solvents permits to suppose that at alcohol concentrations in solution resulting in disruption of the water spatial structure, some peculiarities are observed in the behavior of those molecules whose hydrophobic interactions are essential.

Ograniczanie wyników

A novel application of building demolition waste for removal benzene from aqueous solutions

The equilibrium function as an indicator of symmetry of functional status of arm wrestlers

Physicochemical analysis of phosphatidylcholine-ceramide system in bilayer lipid membranes

Consequences of neglecting density-dependent effects in steady-state properties of phytoplankton models

Bacteria in soil at fungi-community reduction resulting from captan application

Evaluation of mixed-salt effects on thermodynamic and kinetic parameters of RNA polymerase - promoter DNA complexes in terms of equivalent salt concentrations. General applicability to DNA complexes

Oxidant - antioxidant balance in host - parasite relationship

Physicochemical research on adsorption and bonding of fungicides applied in wood preservation with lignocellulosic materials

Alternative stable states in floodplain ecosystems

Removal of dissolved metals by activated carbon from road runoff in batch systems – equilibrium and kinetic

The gamma-glutamyl transferase activity and non-protein sulfhydryl compounds levels in rat kidney of different age groups

Effect of ethanol on structural transitions of DNA and polyphosphates under Ca2plus ions action in mixed solutions