2013 - Repozytorium publikacji - Politechnika Gdańska

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Publikacje z roku 2013

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The influence of food phytochemicals on cyclic phosphodiesterase 4 (PDE4) activity
- Izabela Koss-Mikołajczyk
- Agnieszka Bartoszek-Pączkowska
- Teresa Rohrig
- Elke Richling
2013 Acta Biochimica Polonica
Cyclic phosphodiesterase 4 (PDE4) belongs to family of cyclic phosphodiesterases, which are expressed predominantly in inflammatory cells, airway smooth muscles, cardiovascular tissues and brain. Inhibitors of this family of enzymes found medicinal applications as antidepressants, antiinflamatory drugs (mainly in airway diseases) or antiasthmatics (Ibudilast). PDE4 inhibitors are also being tested for preventing the development of for neurodegenerative diseases such as Alzheimer or Parkinson diseases. An example of PDE4 inhibitor that is already used in medicin is Ibudilast- asthma drug. It is known that phytochemicals can affect cyclic phosphodiesterase activity, for example coffee extract is known to be a very strong inhibitor of PDE4. It was also demonstrated that anthocyanidins like malvidin or paconidin found in e.g. grapes that have methoxy groups in their B-ring are potent PDE inhibitors. It is however less recognized whether other abundant plant anthocyanins, which are anthocyanidines glucosides also display such inhibitory properties. The purpose of this research was to get to examine the ability of whole plant extracts to influence PDE activity with special focus on anthocyans and the impact of food matrix. The study compared white and red fruit/vegetables belonging to the same species. The tested extracts originated from: yellow and red mirabelle plum, white and red grapes, as well as white and red cabbage. Red plants were expected to contain similar composition of phytochemicals additionally enriched in anthocyanins. PDE4 activity was determined according to the method of Pöch [Pöch, 1971] with slight modifications. In this method the rate of turnover of cAMP to 5’-AMP by PDE is used to determine this enzyme activity. The PDE assay results showed the dose-dependent inhibition of PDE4 activity- by plant extracts. White/yellow plant extracts showed more powerful PDE inhibiting ability than their red counterparts in the case of all studied plants. Based on our findings it could be concluded that anthocyanins (glucosides) may rather stimulate than inhibit PDE4 activity
The influence of moderate pressure and subzero temperature on the shelf life of minced cod, salmon, pork and beef meat
- Edyta Malinowska-Pańczyk
- Ilona Kołodziejska
2013 Pełny tekst FOOD TECHNOLOGY AND BIOTECHNOLOGY
The effect of moderate pressure at subzero temperature on natural microflora of minced cod, salmony, pork and beef meat was studied. Pressure of 193 MPa at –20 °C caused reduction of total bacterial count in pork and beef meat by 1.1 and 0.6 log cycles, respectively, and by about 1.5 log cycles in fish meat. Under these conditions the psychrophilic and psychrotophic bacteria were below the detection limit (<10CFU/g of sample) in pork and beef meat, while in cod and salmon meat they were reduced only by 1.3 and 2.0 log cycles, respectively. In all tested samples of meat treated with the pressure of 193 MPa at –20 °C, the number of coliforms was below 10 CFU/g. Under these conditions a significant reduction in the number of coagulase-positive Staphylococcus was also observed. During storage of samples at 4 °C after pressurization at 193 MPa and –20 °C, the inhibition of growth of all tested groups of bacteria was observed. Moderate pressure at subzero temperature does not ensure complete inactivation of bacteria; however, it allows the improvement of microbiological quality and extension of shelf life of food, which depends on the level of bacterial contamination of the initial raw material.
The influence of PET mechanical properties on Stretch Blow Molding (SBM) process
- Paweł Wawrzyniak
2013
In the paper it is said about the influence of PET mechanical properties on SBM process parameters changes. The below paper mentions also about the influence of PET orientation and crystallization processes which have a very big influence on mechanical and thermal properties of PET material during SBM process. All mechanical data of PET material and SBM process parameters change in time are been got from collected literature which are mainly Menary (2012) and Salomeia (2012).
The influence of phosphorus fractions in bottom sediments on phosphate removal in semi-natural systems as the 3rd stage of biological wastewater treatment
- Agnieszka Tuszyńska
- Katarzyna Kołecka
- Bernard Quant
2013 ECOLOGICAL ENGINEERING
The research was carried out in two semi-natural systems (the polishing ponds in Swarzewo and the free water surface constructed wetland in Zarnowiec) in Poland. They were built as the 3rd stage of a conventional mechanical–biological wastewater treatment plant. These systems were built to improve the quality of the effluent of treated wastewater. In the polishing ponds and FWS wetland system, suspended solids, organic matter as well as nitrogen are removed, but there is problem with phosphorus removal. The aim of this paper was to determine phosphorus removal from treated wastewater as well as the characteristics of the bottom sediments with respect to phosphorus fractions and their transformation due to seasonal changes. The total efficiency of the phosphorus removal from the wastewater in Swarzewo was only 23.7%, while in Zarnowiec the total concentration of phosphorus in the effluent increased. It was found that in Swarzewo phosphorus bound with organic matter (NaOH–P fraction) had the largest impact on the deposition process and the release of phosphorus from the sediments to the wastewater, while in Zarnowiec–phosphorus loosely absorbed on the particle surface (NH4Cl–P fraction) and bound with iron (Fe–P fraction) was the most significant. The sediments from the semi-natural systems are a rich source of phosphorus, which is directly assimilable by plants. In the sediments from Swarzewo, the mobile forms (the sum of NH4Cl–P, Fe–P, NaOH–P) constituted 79% of the total phosphorus. The sediments from Zarnowiec are characterized by higher concentrations at these forms (about 96.0%). The sediments are capable of releasing phosphorus, so they should be scooped. The relatively low concentration of heavy metals and high concentrations of nitrogen and mobile fractions of phosphorus indicate, however, that after hygienization, the analyzed sediments can be potentially used as an initial product for the production of fertilizer.
The influence of stainless steels microstructure evolution on the mechanical properties of pressure installation elements
- Paweł Szabracki
- Marcin Jaskólski
- Tomasz Lipiński
- Agnieszka Kaczmarek-Kacprzak
2013
In this paper results of FEM analysis performed for pipe and 90o elbow, made of super duplex stainless steel, after precipitation of sigma phase (),were presented. Heat treatment conditions simulate accidental overheating that can occur in nuclear installations after cooling circulation fails. For initial and modified microstructure tensile test was performed and numerical description of work hardening curves was done. Verification of FEM results was performed on the basis of empirical equations describing circumferential stresses in pipe. Stress distribution and deformation in both geometries reveals areas with highest risk of damage in pressure installation.
The influence of stainless steels microstructure evolution on the mechanical properties of pressure installation elements
- Marcin Jaskólski
- Agnieszka Kaczmarek-Kacprzak
2013
In this paper results of FEM analysis performed for pipe and 90o elbow, made of super duplex stainless steel, after precipitation of sigma phase (s), were presented. Heat treatment conditions simulate accidental overheating that can occur in nuclear installations after cooling circulation fails. For initial and modified microstructure tensile test was performed and numerical description of work hardening curves was done. Verification of FEM results was performed on the basis of empirical equations describing circumferential stresses in pipe. Stress distribution and deformation in both geometries reveals areas with highest risk of damage in pressure installation.
The influence of the UV irradiation on degradation of virgin rapeseed oils
- Roman Pawłowicz
- Justyna Gromadzka
- Maria Tynek
- Robert Tylingo
- Waldemar Wardencki
- Gyorgy Karlovits
2013 EUROPEAN JOURNAL OF LIPID SCIENCE AND TECHNOLOGY
This paper presents research which is a continuation of the investigations described earlier. The aim of these studies was to determine the influence of UV irradiation on flavor and the oxidative stability of different rapeseed oils varieties. For the purpose of this study, oil samples underwent accelerated deterioration for 4.5 h under a UV light test. In the obtained sample, characteristic values (peroxide (PV, 1.23–1.62 meq O2/kg), anisidine (AnV, 0.53–1.20) and TOTOX (3.02–4.14)), concentration of conjugated dienes (E1% 1cm at 232 nm 1.21–2.08) and trienes (E1% 1cm at 268 nm 0.11–0.34), carotenoids and chlorophylls, oxidative stability (DSC-test), volatiles were determined and a sensory evaluation was carried out. Changes in the PV and AnV values in the function of irradiation time have fluctuating character (e.g., for PV from 0.45 meq O2/kg before UV treatment to 1.61 meq O2/kg after 4.5 h of the UV irradiation and for AnV from 0 to 1.20), therefore they cannot be used as quality indicators. There was no correlation between these values and the level of generated sensory descriptors and the sum of volatiles as well as the initial oils stability (DSC-test). During UV irradiation, the decrease in carotene and chlorophyll content had a linear pattern. The absolute losses of carotenoids were from 1 ppm (samples 5 and 6) to 3.8 ppm (sample 2) and for chlorophylls from 0.02 ppm (sample 5) to 0.25 ppm (sample 4). There was a high correlation (R2 ¼ 0.87) observed between the maximum intensity of the varnish descriptor and IP-DSC of the virgin oils for all samples.
The Influence of Workpiece Hardness on Plate Temperature during One Side Lapping
- Justyna Molenda
- Adam Charchalis
- Adam Barylski
2013 Solid State Phenomena
Lapping leads to a surface with low roughness and high precision. Because of required parts accuracy tool flatness is the key to the successful machining. To avoid its excessive thermal expansion, plate temperature research was taken. The goal was to determine the correlation between the basic lapping conditions and wheel temperature. In work Bulsara et al. authors developed model to estimate the maximum and average temperature rise of the work surface in lapping. According those models temperature rise depends also on workpiece and plate hardness. Because the second is constant during process, this part of research refer only to the influence of workpieces hardness. They were conducted during lapping the samples made of steel 45. To vary the hardness, samples were divide into three groups each with different Knoop hardness value: 175, 471 and 687. The different hardness values were a result of different heat treatment methods used. Every group after grinding were lapped with the same lapping conditions. In the next step the statistical analysis was conducted. It was verified if the plate temperature is influenced by the workpieces hardness. A hypotheses testing method was use. Results were calculated for temperature rise values measured after 300 minutes of machine working. According to them the influence of workpiece hardness on plate temperature is statistically insignificant.
The innovations services in Scania company
- Aleksandra Iskra
- Przemysław Kitowski
2013
This chapter shows us the service innovations in Scania company. Current research were based on actual situation on market and were supported by tools which help to generate innovative ideas. The new product will not only benefit the company and its clients, but also improve the situation on the market.
The innovative exploitation of Brassica vegetables in the health quality food production chain
- Anna Piekarska
- Marzena Szczygłowska
- Małgorzata Bodnar
- Piotr Konieczka
- Jacek Namieśnik
- Barbara Kusznierewicz
- Dominik Kołodziejski
- Tadeusz Pilipczuk
- Agnieszka Bartoszek-Pączkowska
- Renata Bączek-Kwinta
2013 Acta Horticulturae
In this overview the multidirectional opportunities of innovative exploitation of chemical and biological properties of vegetables from Brassiceae family are discussed. The specific chemical composition of brassicas, as regard both nutrients and non-nutrients, renders them particularly suitable for the health food production chain, literally from field to fork. the ability of these plants to accumulate heavy metals may be utilised for phytoremediation of arable soils, but also as a vehicle to fortify foods in micronutrients such as selenium. The agricultural waste of brassica crops containing glucosinolates and their degradation products represents a valuable raw material for crop protection in the process of biofumigation, at the same time constituting green manure. Moreover, glucosinolate derivatives owing to their chemical properties can target a number of biological processes implicated in human organism homeostasis. Consequently, rationally exploited Brassica vegetables may be a promising ingredient for research based productiuon of foods addressing gerenal public, as well as specific groups of consumers.
The innovative exploitation of Brassica vegetables in the production of quality food for health. From lab bench to field and fork.
- Agnieszka Bartoszek-Pączkowska
- Anna Piekarska
- Barbara Kusznierewicz
- Dominik Kołodziejski
- Tadeusz Pilipczuk
- Marzena Szczygłowska
- Małgorzata Bodnar
- Piotr Konieczka
- Jacek Namieśnik
2013
The specific chemical composition of vegetables belonging to Brassicaceace , as regard both nutrients and non-nutrients, renders them particularly suitable for the health food production chain. The ability of these plants to accumulate heavy metals may be utilised for phytoremediation of arable soils, but also as a vehicle to fortify foods in micronutriens such as selenium. The bioactive organosulfur compounds, especially glucosinolates and their degradation products are known to target a number of biological processes implicated in human wellbeing. Even the agricultural waaste of brassica crops represents a valuable raw material for crop protection in the process of biofumigation, at the same time constituting green manure.
The Innovative Faculty for Innovative Technologies
- Piotr Odya
- Piotr Szczuko
- Andrzej Czyżewski
- Karol Lisowski
- Józef Kotus
- Andrzej Ciarkowski
2013
A leaflet describing Faculty of Electronics, Telecommunications and Informatics, Gdańsk University of Technology. Multimedia Systems Department described laboratories and prototypes of: Auditory-visual attention stimulator, Automatic video event detection, Object re-identification application for multi-camera surveillance systems, Object Tracking and Automatic Master-Slave PTZ Camera Positioning System, Passive Acoustic Radar, "Sound recognition service" - a super-computer service able to detect, classify and localize threatening acoustic events, System for creating dynamic maps of noise threats employing grid computing, System supporting speech perception for special educational needs of schoolchildren, Video event recognition system with enhanced privacy protection, Virtual Whiteboard
THE MANAGEMENT OF DESIGNING PROCESSES IN THE CREATION OF THE KNOWLEDGE BASE SYSTEM : Proceedings of International Computer Science Convention
- Cezary Orłowski
2013
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THE MODELLING OF ACCUMULATION AND DISSIPATION OF ENERGY IN MECHANICAL DRIVE SYSTEM
- Andrzej Kaczmarski
2013 Pełny tekst Journal of Polish CIMEEAC
This paper presents a modelling of accumulation and dissipation energy in simple drive system. The simple drive system is presented by laboratory stand designed for calculate fatigue life of material for bending and rotation tests pieces. The laboratory stand was prepared to diagnosis of fatigue life of material by use energetic methods. This idea was submitted as utility model to Polish Patent Office. This laboratory stand gives ability to research a influence of change of fatigue life for energetic symptoms (like: temperature of material, vibration, Acoustic Emission, rotary speed, electrical energy). This paper presents influence of change of fatigue life for rotary speed. The rotary speed is value describing effect of accumulation and dissipation energy in drive system (in material). A difference between energy taken from power supply and consumed for giving rotary speed is used for fatigue of material. This simple theory is presented and modelling in this paper. The next paper (in this book) describes results of research that could verify this theory.
The new steel-glass architecture of buildings in Japan
- Zbigniew Cywiński
- Ewa Maria Kido
2013 STEEL CONSTRUCTION - DESIGN AND RESEARCH
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The new version of contact-less method for localisation of catenary contact wire – theoretical assumption
- Jacek Skibicki
2013 Pełny tekst Przegląd Elektrotechniczny
This article presents the theoretical basic of a new version of contact-less method for localising the catenary contact wires, using the advanced video techniques and image analysis. So far, contact line diagnostic systems exploited nowadays uses the contact measuring methods with special design current collector. This solutions make it impossible to measure the contact line geometry in a static way. The proposed measurement method using the optical techniques, makes that the static geometry measurements are possible even at high speed of diagnostic car.
The Niching Mechanism in the Evolutionary Method of Path Planning
- Roman Śmierzchalski
- Piotr Kolendo
- Łukasz Kuczkowski
- Bartosz Jaworski
- Anna Witkowska
2013
This paper presents the concept of the niching mechanism in the evolutionary method of path planning. The problem is considered based on the example of a ship path planning. In this method the diversity of individuals is tested in respect to their physical distance, not the fitness function value. The researches show that such an approach increases effectiveness of solution space exploration, what results in a final solution with a better fitness function value. This paper examines several sea collision scenarios at different levels of difficulty. Based on those, the method has been tested to choose values of parameters, which significantly influence its effectiveness.
THE OPPORTUNITY FOR THE DEVELOPMENT OF TROLLEYBUS TRANSPORT WITH THE SUPPORT OF EUROPEAN UNION FOUNDS
- Mikołaj Bartłomiejczyk
- Stefan Hamacek
- Marcin Połom
2013
The article introduced the development of trolleybus transport in Poland during the last 10 years. Development that took place was wi support of the European Union.
The Optimal Spindle Speed Map for Reduction of Chatter Vibration During Milling of Bow Thruster Blade
- Krzysztof Jan Kaliński
- Michał Mazur
- Marek Galewski
2013 Solid State Phenomena
W artykule przedstwiono przykład wykorzystania procedury tworzenia mapy optymalnych prędkosci obrotowych w celu ograniczenia drgań samowzbudnych podczas frezowania płata śruby okrętowego steru strumieniowego.
The Origins of the Concept of Ideology
- Andrzej Karalus
2013 Pełny tekst Archiwum Historii Filozofii i Myśli Społecznej
The concept of "ideology" as, firstly, a term that points at non-epistemological conditioning of cognitive processes, and, secondly, as a term which aimed at disclosing the ancillary role of given ideas in regard to specific political interests of certain groups, has long history. Since Francis Bacon's theory of idols modern philosophy endavoured to create a comprehensive classification of systematic cognitive errors which divert man from innate light of reason and experience. In the philosophy of French Enlightenment range of problems later labeled as "ideological" was taken up from the perspective which concentrated on the role that ideas play in legitimizing socio-political order. The very concept of ideology was coined by Antoine Destutt de Tracy and his intention was to create a new primary science that, while investigating systematic relations between the realm of ideas and psychological processes which underlie them, is ultimately to become a motor of social advancement and an instrument of establishing a rule of enlightened and rational public governance. In the concluding fragment several major theoretical and practical difficulties of the early formulations of ideology before the groundbreaking works of Marx were published are discussed.