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Search Results: 1 - 10 of 219 matches for " Jadwiga Furczak "
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The Importance of Sludge Microorganisms in Nitrogen Transformations in Podzolic Soil Amended with Sewage Sludge
Jolanta Joniec , Jadwiga Furczak , Stanis aw Baran
Archives of Environmental Protection , 2012, DOI: 10.2478/v10265-012-0003-y
Abstract: The laboratory experiment was set up on a podzolic soil in two variants. In one of them non-sterile sewage sludge was introduced into the soil, and in the second - the same sludge but subjected previously to the process of sterilisation. In both variants the same doses of the sludge were applied: 30 (1%), 75 (2.5%), 150 (5%), 300 (10%) and 600 Mg·ha-1 (20%). Then, after 0.5, 1, 2, 3, 4 and 5 months, the soil of both experimental variants was analysed for the numbers of bacteria and fungi decomposing proteins, the rate of the process of ammonification, the rate of the process of nitrification, and for proteolytic activity. The results obtained revealed a stimulating effect of the sludge, both sterile and non-sterile, on the numbers of the microbial groups under study and on the rate of nitrification and protease activity. Only the process of ammonification was subject to inhibition. The observed effects of the sludge were the most pronounced in the case of the higher sludge doses. Significantly greater numbers of protein-decomposing fungi and higher activity of almost all (except for ammonifcation) analysed biochemical parameters in the soil with non-sterile sludge compared to that with sterile sludge indicate an effect of microorganisms from the sludge on the microbiological transformations of nitrogen in soil amended with sewage sludge.
Preliminary study of sludge effect on soil microbial activity of a podzolic soil under willow culture
J. Furczak,J. Joniec
International Agrophysics , 2007,
Abstract: The study was performed on a model of a field experiment in which a podzolic soil was fertilized with various doses of municipal-industrial sewage sludge (1, 2.5, 5, 10 and 20% of dry mass). Next, the soil was planted with willow (Salix viminalis L). After six months from the application of the sludge, determinations were made of the so-called total number of bacteria with low and high nutritional requirements, total number of fungi, number of cellulolytic and 'proteolytic' bacteria and fungi, respiratory activity, cellulose mineralization rate, intensity of ammonification, nitrification, dehydrogenases and protease activity in the soil. In the Ap horizon of the soil higher doses of the sludge caused significant stimulation of growth of most of the studied groups of bacteria and fungi (with the exception of 'proteolytic' bacteria and fungi). Also, stimulation of almost all of the biochemical parameters studied was observed, increasing with growing concentration of sludge. Only the process of ammonification was strongly inhibited in the treatment with 20% dose of sludge.In the deeper layer of the soil (20-40 cm) the effect of sewage sludge was weaker and less dependent on the dosage applied than in the Ap horizon. Only stimulation of growth of cellulolytic fungi was recorded and, in some treatments, of 'proteolytic' bacteria and fungi. Moreover, a slight - though in most treatments significant - increase was observed in the rate of respiration and of cellulose mineralization. The study showed the existence of positive correlations among most of the studied microbial groups and biochemical properties of both soil horizons.
Changes in biochemical activity of podzolic soil under willow culture in the second year of treatment with municipal-industrial sewage sludge
J. Furczak,J. Joniec
International Agrophysics , 2007,
Abstract: The objective of the study was to investigate the effect of various doses of municipal-industrial sewage sludge (1, 2.5, 5, 10, and 20%) on selected biochemical parameters of a podzolic soil under willow culture in the second year of the experiment. The effect of the sediment was observable both in the surface horizon and in deeper layers of the soil, though only in the case of some of the tests (cellulose mineralization, nitrification) it was somewhat more pronounced in the Ap horizon. The recorded changes usually intensified with increasing doses of the treatment. The study showed a stimulating effect in the soil of all applied doses of sludge on respiration, cellulose mineralization rate, nitrification and proteolytic activity, and of the higher doses - on dehydrogenases activity. In the case of ammonification, on the other hand, an inhibiting effect of the sludge was observed in almost all of the treatment objects. The observed effect of the sludge on most of the analysed biochemical parameters was relatively consistent in both the surface horizon (0-20 cm) and in the deeper layers of the soil (20-40 cm). Only the processes of cellulose mineralization (in treatment objects with higher doses of sludge) and those of nitrification were subject to stronger stimulation in the Ap horizon. Positive correlations were recorded between almost all of the analysed biochemical tests. An exception was ammonification which showed no correlation with cellulose mineralization and dehydrogenases activity, and negative correlations with the remaining parameters.
Consumption of Alzheimer disease protective nutrients in diets of polish elderly divided into different nutritional status (MNA)  [PDF]
Joanna Wyka, Jadwiga Biernat
Health (Health) , 2012, DOI: 10.4236/health.2012.429117
Abstract: Many abnormalities can be observed in the nutrition of elderly people which, as a consequence, lead to occurrence or progression of many already existing diet-dependent diseases. The aim of this work was assessment of nutrients consumption, important for prevention and treatment of diet-dependent diseases and potentially neuropsychological diseases, including Alzheimer disease. The intake of antioxidant vitamins, group B vitamins and polyunsaturated fatty acids in food ratios was assessed among 1001 people over 60 years of age, from Wroclaw and nearby areas, SW Poland. Selected parameters of lipid and carbohydrate metabolism were determined in the blood of surveyed people. A deficit intake of all nutrients was demonstrated in groups distinguished by MNA form. Moreover, it was demonstrated that statistically significant, the lowest amounts of vitamin A, E, C, B6, B12, folates, and many other polyunsaturated fatty acids were consumed by women at risk of malnutrition in comparison with women with an adequate nutritional status. Statistically significant lower biochemical parameters, such as TC, LDL TG and glucose were also demonstrated in the group of women at risk of malnutrition than in the group of women with an adequate nutritional status. Control and supervision of the elderly persons’ nutritional intake constitutes the basis of the assessment of risk of deficiency of particular nutritional components occurrence and negative health effects deriving from it. Poor nutrition of seniors along with longer life, from demographic point of view, induces to search for new efficient health-oriented strategies.
Phenolic Compounds Hybrid Detectors  [PDF]
Jadwiga So?oducho, Joanna Cabaj
Journal of Biomaterials and Nanobiotechnology (JBNB) , 2013, DOI: 10.4236/jbnb.2013.43A003
Abstract:

Phenolic compounds are among the major classes of pollutants produced by industrial and agricultural activities. The amperometric biosensors have been mainly applied to the determination of phenolic compounds because of the advantages such as good selectivity, low cost, and easy automation. Amperometry is a method to measure the electric current that flows as a result of reactions generated at the electrode. Amperometric phenol biosensors are most often based on tyrosinase, laccase or horseradish peroxidase immobilized on the electrode surface. The immobilization of enzymes into ordered thin materials has attracted considerable attention over the past few years. The present researches have demonstrated that biomolecules immobilized in different matrixes retain their functional characteristics to a large extent. These new materials are of great interest for applications as biosensors and biocatalysts. Lately, also conducting polymers have attracted much interest in the development of biological sensors. The electrically conducting polymers are known as possessing many interesting features, which allow them to act as excellent materials for immobilization of biomolecules.

Nano-Sized Elements in Electrochemical Biosensors  [PDF]
Joanna Cabaj, Jadwiga So?oducho
Materials Sciences and Applications (MSA) , 2014, DOI: 10.4236/msa.2014.510076
Abstract:
The emerging nanotechnology has opened novel opportunities to explore analytical applications of the fabricated nano-sized materials. Recent advances in nano-biotechnology have made it possible to realize a variety of enzyme electrodes suitable for sensing application. In coating miniaturized electrodes with biocatalysts, undoubtedly the most of the potential deposition processes suffer from the difficulty in depositing process and reproducible coatings of the active enzyme on the miniature transducer element. The promising prospects can concern to the obtaining of thin protein layers by using, i.e. electrochemical deposition, electrophoretic deposition as well as monolayer methods (Langmuir-Blodgett procedure, Layer-by-LayerLbL). Many aspects dealing with deposition of enzyme by techniques employing electric field are considered, including surface charge of enzyme, and its migration under applied electric filed. The using of nanoscale materials (i.e. nanoparticles, nanowires, nanorods) for electrochemical biosensing has seen also explosive increase in recent years following the discovery of nanotubes. These structures offer a promise in the development of biosensing, facilitating the great improvement of the selectivity and sensitivity of the current methods. Finally, the perspectives in the further exploration of nanoscaled sensors are discussed.
Effects of Viral Epizootic Induction in Population of the Satin Moth Leucoma Salicis L. (Lepidoptera: Lymantriidae)
Jadwiga Ziemnicka
Journal of Plant Protection Research , 2008, DOI: 10.2478/v10045-008-0005-x
Abstract: An epizootic was induced by introduction of Leucoma salicis nucleopolyhedrovirus (LesaMNPV) into satin moth (L. salicis) population feeding on poplar Populus nigra L. Introduction of LesaMNPV virus at a rate 4 x 102 of inclusion bodies per tree into insect population (stage L3 and L4) resulted in a rapid outbreak collapse both in the peak and early decline phases. A rate of epizootic development depended on healthiness of satin moth larvae before the treatment. Insect population with a high level of nucleopolyhedrovirus (app. 21% and 26% infected insects) reached the epizootic peak on the 18th day after the treatment (85% and 86% infected insects). Induced epizootic resulted in the decline phase of L. salicis population that continued for subsequent 6 years. Accidental occurrence of fungus Beauveria bassiana (Bals.) Vuill. extended the population decline phase for the period of at least 8 years. Induced epizootic caused a rapid collapse of satin moth outbreak with direct transition from the population peak phase into the population collapse phase with omission of the decline phase. This pattern was not observed in not treated populations. Artificially induced epizootics affected healthiness of insect pupae and adults as well the reproductive potential of females and healthiness of offspring. The weight of pupae obtained from treated larvae was lower when compared with the control. Virus infections were found more frequently in female pupae than in male pupae. This resulted in a 6-28 fold decrease of the number of egg masses and 3.5-5 times lower numbers of eggs deposited by females. Offspring of infected pairs showed symptoms of viral infection (15-28% infected larvae) and the number of offspring was 70-800 times lower in comparison with offspring of not infected pairs. This study presents the results of induced epizootic and has been the first attempt to review and sum up results of long-term research on evaluation of nucleopolyhedrovirus efficacy in natural conditions.
Outbreaks and Natural Viral Epizootics of the Satin Moth Leucoma Salicis L. (Lepidoptera: Lymantriidae)
Jadwiga Ziemnicka
Journal of Plant Protection Research , 2008, DOI: 10.2478/v10045-008-0004-y
Abstract: Long standing systematic observations on Leucoma salicis populations revealed numerous occurrences of outbreaks and natural viral epizootics. Number of insects appearing in outbreaks at peak density ranged from 450 to 3250 on 10 examined poplar trees (up to 2 m height). Abundance of virus within population of such a high density increased along with an increase of insect population. Populations with high density and high level of nucleopolyhedrovirus (LesaMNPV) and cypovirus did not last long and collapsed suddenly. Outbreaks of the satin moth were favored by warm and humid conditions while warm and dry spring, summer months were conducive to viral epizootic. Most outbreaks happened in the years with mean temperatures of spring and summer months above 15°C and 50-60% RH while, most epizootics were recorded at similar temperature conditions but lower RH, i.e. 40-50%.
Polymetallic mineralization in Triassic strata of the NW part of the Kraków-Cz stochowa Monocline
Jadwiga Pieczonka
Mineralogia , 2010, DOI: 10.2478/v10002-010-0004-1
Abstract: A new association of ore minerals has been found in the Lower and Middle Triassic rocks in the vicinity of the village of Wo niki in the NW part of the Upper Silesian district. In addition to the typical Zn-Pb-Fe association in dolomites, copper sulphides have been detected in the sandstones and conglomerates of the Lower Bunter. Copper mineralization occurs in the sandstone matrix and is represented by bornite, chalcopyrite, chalcocite, tetrahedrite and covellite. High admixtures of zinc in Cu sulphides and admixtures of copper in Zn-Pb sulphides suggest a common source for the metal-transporting fluids and a single period of sulphide crystallization.
Certain effects of field and light induced electron emission from indium thin oxide (ITO) layers
Jadwiga OLESIK
Optica Applicata , 2005,
Abstract: Indium thin oxide (ITO) layers were deposited onto both surfaces of a glass substrate. One of the layers was a field electrode and negative voltage has been applied to it in order to create the internal electric field. Another one was treated as the electron-emitting layer. The studies were carried out in the 10–7 hPa vacuum. As a result of applying polarizing voltage Upol and illuminating by a quartz lamp, photoelectrons are released and enter the electron multiplier. Voltage pulses from the multiplier are recorded in the multichannel amplitude analyzer, creating so-called voltage pulse amplitude spectrum. Dependence of electron emission yield on both the intensity of internal field and illumination was measured. With the increasing the Upol voltage, the count frequency of pulses grows monotonically. At higher Upol (> |–1 kV|) this dependence is exponential. After illuminating the yield of the field induced electron emission grows as well. The cascade multiplication of electrons, which is responsible for the high emission yield, develops under the influence of the electric field of the order of 1 MV/m. The Gauss approximation suggests that the internal electric field in the interface between a glass and ITO layer has to be taken into account.
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