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Diffraction phase microscopy for observation on red blood cells fluctuation

Babicz-Kiewlicz S., Stawarz-Graczyk B., Wierzba P., Mazikowski A.

Zeszyty Naukowe Wydziału Elektrotechniki i Automatyki Politechniki Gdańskiej

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2015

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Nr 46

13--16

EN

Nowadays there is quite huge need for more and more precise and effective fast diagnostics methods in hematology diseases. One of the most important blood components are erythrocytes – RBCs (Red Blood Cells). Due to their size they are easy to observe using microscopy. It is commonly known that the shape and lifetime of RBCs allows for early disease identification. Authors present special measurement system for RBCs fluctuations observation using diffraction phase microscopy which is also described in theory.

PL

Istnieje zapotrzebowanie na coraz bardziej precyzyjne i bardziej efektywne metody szybkiej diagnostyki w kierunku chorób hematologicznych. Jednym z głównych składników krwi są erytrocyty (RBC –Red Blood Cells), które z uwagi na swój rozmiar mogą być łatwo obserwowalne. Powszechnie wiadomo, że kształt i długość życia tych komórek pozwala na wczesną identyfikację stanów chorobowych. Najnowsze wyniki badań świadczą też, że oprócz tych cech istotną informację zawiera przebieg fluktuacyjny erytrocytów. Autorzy proponują układ do obserwacji fluktuacji czerwonych komórek krwi z wykorzystaniem dyfrakcyjnego mikroskopu fazowego.

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Usuwanie fosforanów z wykorzystaniem osadów potechnologicznych pochodzących ze stacji uzdatniania wody

Totczyk G., Klugiewicz I., Pasela R., Górski Ł.

Rocznik Ochrona Środowiska

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2015

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Tom 17, cz. 2

1660--1673

EN

With the treatment of water, especially surface waters, there is produced a high amount of sewage and sludge. They make up a serious ecology problem that due to a high volume and the content of sludge of iron or aluminium oxide-hydroxide or, pollution which occur in the intaken water (mineral and organic substances, algae, protozoa and bacteria) as well as the chemicals added. The environmental protection requires limiting materials as well as it makes you search for effective waste management problem-solving methods. The waste generated at present during water treatment most often undergo dehydration and drying and then they are deposited at the landfill site. The currently binding environmental protection law makes you look for the possibilities of the use of sludge as recycled materials, e.g. in brick factories, cement factories or with sewage treatment. Sludge containing aluminium or iron can be used e.g. in the process of municipal sewage treatment. The application of sludge containing aluminium for dephosphatation has the advantage of protecting the system from secondary release of precipitated phosphates in the environment deprived of dissolved oxygen. The possibilities of sludge application to remove phosphates differ, depend not only on the sludge characteristics but also on the sewage treatment process. The article demonstrates the results of research into using sludge derived from water treatment station in Lubicz to remove phosphates from sewage. At present the sludge after sedimentation and mechanical dehydration with the filtration press finally reaches the municipal landfill site. The sludge, applied for research, concentrated in settling vessels, is a mixture of post-coagulation sludge and washings from anthracite-sand and carbon filters. Its hydration accounting for 98,7% shows a high colour, above 80 mg Pt/dm3, it contains about 2,6 g/dm3 of aluminium as well as organic compounds expressed with BOD5 value equal 170 mg O2/dm3. The sludge shows a high COD of 3990 mg O2/dm3, and organic substance – for 31,6% of dry weight. The study of effectiveness of the removal of phosphates was made with the vessel test method. The sludge was dispensed at a changing volume from 0,5 to 100 cm3 per 1 dm3 of prepared water and then sewage. Both in water and in sewage there was recorded a 90% removal of phosphates by applying 80 cm3 of sludge per 1 dm3 of the sample. Additionally there was investigated the effect of dispensed sludge on the effectiveness of sewage treatment with the model of the treatment plant with rotating biological contactors. Applying the rate of 40 cm3 of sludge per 1 dm3 produced 96,0% elimination of COD, 97,7% removal of organic compounds characterised with the values of COD and BOD5 as well as 100% removal of phosphates. Finally it was found that it is possible to use the sludge to remove phosphates from sludge. During dephosphatation there was reported no use-up of the natural alkalinity of sewage. Sludge dispensing did not result in a decrease in the effectiveness of sewage treatment with the method of rotating biological contactors. The research is preliminary in nature and it needs to be continued.

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Toxicity analysis of coke wastewater treated in a rotating biological contactor and a membrane bioreaktor

Tomaszewski M., Pypeć K., Zgórska A., Ziembińska-Buczyńska A.

Environmental Biotechnology

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2015

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Vol. 11, No. 2

34--40

EN

To investigate the effectiveness of a rotating biological contactor (RBC) and a two-stage membrane bioreactor (MBR) for the treatment of coke wastewater, samples were collected three times (Batches I, II, III) from the “Jadwiga” coke plant in Zabrze, Poland at two-week intervals. The wastewater was then diluted with tap water (1:3 ratio, wastewater : tap water) and then treated at retention times of 4.1 days (RBC) and 7 days (MBR). For phytotoxicity and genotoxicity tests, the wastewater was sampled from various points in the treatment systems and further diluted to produce a range of concentrations. In the phytotoxicity tests (growth inhibition), Lemna minor and Vicia faba were used. A low concentration of wastewater (6.25%) often stimulated growth. Higher concentrations, however, inhibited L. minor growth completely. These tests indicated that the MBR generally reduced growth inhibition more effectively than the RBC. In the genotoxicity tests (chromosome aberrations and micronuclei formation) root meristem cells of V. faba were examined. The genotoxicity of the different batches varied, and neither system was particularly effective for reducing genotoxicity. The results of this study indicate that, because its composition is so variable, coke wastewater should be constantly monitored. Also, because of its potentially high genotoxicity, the ecotoxicological characteristics of coke wastewater should be monitored in addition to basic indicators of wastewater quality, such as COD, BOD, and content of nitrogen compounds.

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Pomiary płynności i mikrolepkości elementów morfotycznych krwi u osób ze sztuczną zastawką serca

Szyller-Tracz M., Żakowska I., Jóźwik K.

Inżynieria Biomateriałów

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2004

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R. 7, nr 35-36

56-61

PL

Warstwa Nanokrystalicznego Diamentu (NCD) została wykorzystana w przypadku protez/urządzeń mających kontakt z komórkami krwi (np. sztuczne zastawki serca). Warstwy węglowe wykazują dobre właściwości biozgodności oraz hemozgodności. W prezentowanych badaniach użyta została technika spektroskopii elektronowego rezonansu paramagnetycznego (EPR) do pomiarów płynności i lepkości wnętrza elementów morfotycznych, w szczególności erytrocytów. Parametry (opisujące płynność lipidów błonowych) ostały określone na podstawie widm EPR. Zmiany w płynności lipidów błonowych i lepkości wnętrza krwinek czerwonych zostały zbadane przy pomocy spektroskopii EPR przy użyciu znaczników spinowych: trzech kwasów tłuszczowych (kwasów 5-, 12-, 16-doksylostearynowych) oraz Tempaminy. Celem niniejszej pracy było przedstawienie metod pomiaru parametrów krwinek czerwonych oraz opracowanie statystyczne uzyskanych wyników. Prezentowane metody mogą zostać użyte do zbadania oddziaływań warstw NCD z komórkami krwi. Przepływ przez sztuczną zastawkę serca jest związany z występowaniem większych wartości naprężeń ścinających działających na powierzchnię komórek oraz w konsekwencji zmian w strukturze lipidów i białek plazmatycznych. Zmiany w płynności lipidów błonowych krwinek czerwonych (RBC) mogą obniżać ich deformację oraz zwiększać ich agregację, a w konsekwencji mogą prowadzić do zmian właściwości reologicznych krwi ludzkiej.

EN

Nanocrystalline Diamond Coatings (NCD) have been developed for blood cell contacting-implants/devices (e.g. artificial heart valves). Carbon surfaces have good biocompatibility and haemocompatibility. In this study the technique of electron paramagnetic resonance (EPR) spectroscopy was used for measurements of fluidity and internal viscosity of morphotic elements, especially erythrocytes. Parameters (describing the membrane lipid fluidity) were determined using EPR spectra. Changes in the membrane lipid fluidity and internal viscosity of red blood cells were examined by means of EPR spectroscopy using spin labelled: three fatty acids (5-, 12-, 16-doxylstearic acids) and Tempamine. The aim of this study was to present the method of measurements of red blood cells and the statistical post-processing of the obtained results. These methods could be used to examine interactions between a NCD layer and blood cells. The blood flow through an artificial heart valve is connected with high values of the shear stress as acting on cell surfaces and, in consequence, by changes in the structure of membrane of lipids and proteins. Changes in plasma membranes of red blood cells (RBC) can decrease their deformation and increase their aggregation and, in consequence can lead to alterations in the rheological properties of human blood.