Szukana fraza: [Słowa kluczowe = "Pigments"]

Algal pigments in Hornsund (Svalbard) sediments as biomarkers of Arctic productivity and environmental conditions

Magdalena Krajewska Małgorzata Szymczak-Żyła Grażyna Kowalewska

Polish Polar Research | 2017 | vol. 38 | No 4 | 423-443 | DOI: 10.1515/popore-2017-0025

Słowa kluczowe Arctic HPLC Pigments sediments Spitsbergen

Abstrakt

Pigments (chloropigments-a and carotenoids) in sediments and macroalgae samples, collected in Hornsund, in July 2015 and July 2016, were analysed (HPLC) in this work. In spite of the aerobic conditions and the periodic intensive solar irradiation in the Arctic environment, neither of which favour pigment preservation in water column and surface sediments, our results indicate that these compounds can provide information about phytoplankton composition, primary production and environmental conditions in this region. The sum of chloropigments-a, a marker of primary production, in the Hornsund sediments varied from 0.40 to 14.97 nmol/g d.w., while the sum of carotenoids ranged from 0.58 to 8.08 nmol/g d.w. Pheophorbides-a and pyropheophorbides-a made up the highest percentage in the sum of chloropigments-a in these sediments, supplying evidence for intensive zooplankton and/or zoobenthos grazing. Among the carotenoids, fucoxanthin and its derivatives (19'-hexanoyloxyfucoxanthin and 19'-hexanoyloxy-4-ketofucoxanthin) contributed the highest percentage, which points to the occurrence mainly of diatoms and/or haptophytes in the water. The pigment markers show that the input of macroalgae to the total biomass could be considerable only in the intertidal zone.

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Autorzy i Afiliacje

Magdalena Krajewska

Małgorzata Szymczak-Żyła

Grażyna Kowalewska

A study of the influence of synthesis parameters on the physicochemical properties of iron pigments produced from waste iron sulfate

Kamila Splinter Zofia Lendzion-Bieluńb

Chemical and Process Engineering: New Frontiers | 2023 | vol. 44 | No 2 | e12 | DOI: 10.24425/cpe.2023.144698

Słowa kluczowe hematite iron red iron pigment pigment

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Abstrakt

The work presents a two-step method of iron red synthesis based on waste iron(II) sulfate. The synthesis was carried out using purified waste iron sulfate from titanium dioxide production. The study investigated the influence of factors such as temperature, pressure, concentration of solutions and synthesis time on the physicochemical properties of pigments. Obtained pigments were tested by instrumental analytical methods, e.g. X-ray Diffraction or BET surface area analysis. The pigments were analyzed for color, praticles size as well as for oil number. The results of the research showed a change in the physicochemical properties of the obtained pigments depending on the conditions of synthesis. It was shown that increasing the synthesis time in most cases increased the degree of crystallization of hematite in the pigments. High specific surface area, low agglomeration of pigments or low oil absorption are directly related to the crystallinity of the pigments obtained. Laboratory pigments have been found to be different from commercial pigments. The difference in properties speaks in favor of synthesized materials.

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Autorzy i Afiliacje

Kamila Splinter

1

e-mail:

ORCID:

Zofia Lendzion-Bieluńb

1

e-mail:

ORCID:

Department of Inorganic Chemical Technology and Environment Engineering, Faculty of Chemical Technology and Engineering, West Pomeranian University of Technology in Szczecin, Piastów Ave. 42, 71-065 Szczecin, Poland

Influence of diffusion on the reaction of sulfuric acid with ilmenites

Maciej Jabłoński Krzysztof Lubkowski Elwira Wróblewska

Chemical and Process Engineering: New Frontiers | 2023 | vol. 44 | No 3 (24th Polish Conference of Chemical and Process Engineering, 13-16 June 2023, Szczecin, Poland. Guest editor: Prof. Rafał Rakoczy and 8th European Process Intensification Conference, 31.05–2.06.2023, Warsaw, Poland.) | e23 | DOI: 10.24425/cpe.2023.146725

Słowa kluczowe titanium dioxide pigments ilmenites thermokinetics diffusion

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Abstrakt

The reaction of ilmenite raw materials with sulfuric acid has been investigated to find out the influence of diffusion processes on the course of this reaction. Three different laboratory methods were used to initiate the reaction: mixing ilmenite with 83–85% sulfuric acid at a temperature of 80 °C, mixing ilmenite with 90% sulfuric acid at temperatures of 20–40 °C and adding water, and mixing ilmenite with water and adding 95% sulfuric acid. Changes of thermal power during the process (thermokinetics) were studied with the use of calorimetry. It was found that diffusion processes play an important role when the reaction is initiated by mixing ilmenite with water followed by the addition of sulfuric acid and are less important when the reaction is initiated by mixing ilmenite with concentrated sulfuric acid followed by the addition of water. To explain the influence of diffusion processes on the reaction, the model calculations based on mass and heat balance equations were involved. Model calculations showed that the diffusion and mass transport processes are so fast that the reaction kinetics is mainly influenced by the reaction on the surface of ilmenite particles. The adopted model of calculations showed a very good agreement with experimental results.

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Autorzy i Afiliacje

Maciej Jabłoński

1

Krzysztof Lubkowski

1

e-mail:

ORCID:

Elwira Wróblewska

1

e-mail:

ORCID:

West Pomeranian University of Technology Szczecin, Faculty of Chemical Technology and Engineering, Department of Organic and Physical Chemistry, Al. Piastów 42, 71-065 Szczecin, Poland

Separation and Immobilization of Vanadium from Industrial Fly Ash as an Insoluble Inorganic Pigment

P. Kwolek K. Czubajewski M. Wojnicki

Archives of Metallurgy and Materials | 2020 | vol. 65 | No 2 | 901-909 | DOI: 10.24425/amm.2020.132837

Słowa kluczowe recovery inorganic pigments solubility vanadium bismuth immobilisation

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Abstrakt

It has been shown that the precipitation of bismuth orthovanadate from a fly ash leachate is a promising method of vanadium recovery. BiVO4 obtained after appropriate heat treatment can be sold as a pigment. The yield of recovery of solubilised vanadium is equal to 68% and the precipitate is free from nickel impurity. The precipitate is insoluble in the solutions with pH ≥ 3. In more acidic media the solubility of precipitate increases with the decreasing pH. The solubility of the precipitate increases also with the increasing concentration of chloride ions.

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Autorzy i Afiliacje

P. Kwolek

K. Czubajewski

M. Wojnicki

Controlling Acyrthosiphon pisum L. infestation using products of natural origin in forage pea

Ivelina Nikolova

Journal of Plant Protection Research | 2022 | vol. 62 | No 1 | 22-32 | DOI: 10.24425/jppr.2022.140293

Słowa kluczowe control naturalis organic fertilizers pea aphid plastid pigments

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Abstrakt

The perspective direction in the biological regulation of insect pest populations is the combined use of different products of organic origin including fungal biological control agents. Therefore, the present study was aimed to evaluate the efficacy of products of natural origin (Aminogreen 24, Nitrogreen, Foliamin and Naturalis − strain ATCC 74040 of entomopathogenic fungus Beauveria bassiana) and one synthetic insecticide − standard (deltamethrin + thiacloprid), applied alone and in a mixture in the control of Acyrthosiphon pisum in forage pea. The study was conducted in a field experiment during the period 2017 − 2020. Infestation by leaf aphids was estimated by calculating the cumulative insect- -days ( CID). It was found that the combination of Aminogreen 24 + Naturalis had the most pronounced decrease in CID among products over the years from 2017 to 2020 and the average for the period. The greatest, significant reduction in the number of aphids occurred on day 5 (F8.5 = 15.244; p < 0.033) and day 7 (F8.5 = 33.087; p < 0.037) after treatment. On the 14th day, the decrease in CID (57.4% decrease) statistically exceeded the Proteus 110 OD standard (55.3% decrease) (F8.5 = 49.841; p < 0.049). Good protection against A. pisum was also found with Naturalis and Nitrogreen + Naturalis. There was an additive effect between Naturalis and Aminogreen 24 throughout the entire study period. The ratio of chlorophyll a (Chl a) to chlorophyll b (Chl b) and the ratio of green pigments (Chl a + + Chl b) to carotenoids determined that plants treated with Aminogreen 24 + Naturalis and Naturalis had the best physiological state. The combination of Aminogreen 24 and Naturalis gave the largest, significant, increase in stem height, followed by Nitrogreen + Naturalis. The use of Naturalis, alone and in a combination with Aminogreen 24 and Nitrogreen can be a successful alternative to conventional chemical control.

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Autorzy i Afiliacje

Ivelina Nikolova

1

Institute of Forage Crops, Agricultural Academy, Pleven, Bulgaria

Sensitivity of Hydrocharis morsus-ranae L. to selected metals and its suitability for phytoremediation of waters contaminated with metals. A mesocosm study

Małgorzata Gałczyńska Jacek Wróbel Katarzyna Bednarz

Journal of Water and Land Development | 2022 | No 55 | 67-77 | DOI: 10.24425/jwld.2022.142306

Słowa kluczowe biomass Hydrocharis morsus-ranae mesocosm study metals photosynthetic pigments phytoremediation

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Abstrakt

Anthropogenic pollution leads to increased concentrations of metals in the freshwater and macrophyte. Aquatic plants substantially contribute to the structure, function as well as and service provision of aquatic ecosystems. Our microcosm experiments were to test the possibility of the physiological response of Hydrocharis morsus-ranae to metal (Cd, Pb, Cu, Zn, Mn, Fe at three level of concentration) contaminated waters. Biomass was analysed at the beginning and at the end of the experiment. At the same time contents of photosynthetic pigments in leaves were estimated spectrophotometrically. We found that this macrophyte had the ability to grow in contaminated waters, but the effects of high concentration of isolated metals in water will indicate changes consisting in the disappearance of a significant part of biological populations were which manifested in alteration of the content of photosynthetic pigments as well as this plant’s growth. We show that generally stress of Zn and Cu influenced the drop of dry biomass which was connected with a positive correlation between the amount of dry biomass and the content of chlorophyll a and carotenoids, or only carotenoids, respectively. The highest stress of Pb and Fe (third concentrations of these metals) also influenced the drop of biomass. We concluded that none of Cd concentrations were toxic to this plant, but the effect of Mn stress was not unequivocal. Moreover, plant growth was stimulated by low Fe concentrations (first concentration) demonstrating the hormesis effect. When plants were exposed to this metal, there was no evidence of damage to the photosynthetic processes.

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Autorzy i Afiliacje

Małgorzata Gałczyńska

1

e-mail:

ORCID:

Jacek Wróbel

1

e-mail:

ORCID:

Katarzyna Bednarz

1

West Pomeranian University of Technology in Szczecin, Faculty of Environmental Management and Agriculture, al. Piastów 17, 70-310 Szczecin, Poland

Effect of Tytanit on selected morphological, physiological and chemical characteristics of Lolium multiflorum dry matter

Jacek Sosnowski Barbara Wróbel Milena Truba

Journal of Water and Land Development | 2023 | No 56 | 7-13 | DOI: 10.24425/jwld.2023.143738

Słowa kluczowe chlorophyll pigments macronutrients morphometry organic compounds photosynthetic activity ryegrass titanium

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Abstrakt

The aim of the study was the determination the effect of foliar application of growth regulator containing Ti (Tytanit®), on Lolium multiflorum morphometry, photosynthetic activity, chlorophyll content and chemical composition of dry matter. A pot experiment was carried out in a plant breeding room of Siedlce University, Poland, in 2019. The experimental units were as follows: I) control – plants sprayed with distilled water; II) plants sprayed with 0.02% Tytanit concentration; III) plants sprayed with 0.04% Tytanit concentration; IV) plants sprayed with 0.06% Tytanit concentration. The following parameters were determined: the shoots number, the number and the length of leaf blades, the length of roots, the dry weight of roots, the dry weight of plants per pot and the content of chlorophyll a and b in leaf blades. In addition, maximum and actual efficiency of the leaf photosystem, photochemical and non- photochemical quenching coefficients and the content of total protein, crude fibre, monosaccharides, crude fat, crude ash, Ca, Mg, P, K and the ratio of K/(Ca + Mg), and Ca/P in the dry matter of plants were determined. Used in controlled conditions, the regulator contributed to the growth of most morphological characteristics, improved photosynthetic activity, increased the concentration of chlorophyll a and b, and

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Autorzy i Afiliacje

Jacek Sosnowski

1

e-mail:

ORCID:

Barbara Wróbel

2

e-mail:

ORCID:

Milena Truba

1

e-mail:

ORCID:

Siedlce University of Natural Sciences and Humanities, Institute of Agriculture and Horticulture, Siedlce, Poland
Institute of Technology and Life Sciences – National Research Institute, al. Hrabska 3, 05-090 Raszyn, Falenty, Poland

Zmiany koncentracji barwników fotosyntetycznych w synchronicznej hodowli chlorella vulgaris jako wskaźnik jakości wód zbiornika Goczałkowice

Anna Czaplicka-Kotas Joanna Lodowska Adam Wilczok Zbigniew Ślusarczyk

Archives of Environmental Protection | 2009 | vol.35 | No 1 | 65-73

Słowa kluczowe Chlorella vulgaris synchronous culture photosynthetic pigments water quality control Goczałkowice Reservoir

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Abstrakt

Celem niniejszej pracy było wykazanie możliwości wykorzystania synchronicznej hodowli Chlorella vulgaris jako biotestu w kontroli jakości wód. Próbki wody wykorzystane w eksperymencie pochodziły z siedmiu punktów pomiarowych zlokalizowanych w obrębie zbiornika Goczałkowice. Kryterium zmian była koncentracja barwników fotosyntetycznych pochodzących z dwudziestoczterogodzinnego cyklu życiowego komórek analizowanych techniką HPLC. Interpretując zmiany zachodzące w komórkach glonów hodowanych w wodach ze zbiornika Goczałkowice wyodrębniono okres lipcowej powodzi oraz jesiennych zmian jakości wód związanych z naturalnymi przemianami zachodzącymi w jeziorach. Wykazano również, że jakość wody w głównym nurcie strumienia wód wnoszonych do zbiornika przez Wisłę po okresie powodzi różniła się istotnie od jakości wód w innych miejscach zbiornika, zwłaszcza w jego wschodniej części.

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Autorzy i Afiliacje

Anna Czaplicka-Kotas

Joanna Lodowska

Adam Wilczok

Zbigniew Ślusarczyk

Effect of selected bacteria of the genus Pseudomonas on the quality of raw cow’s milk

M. Kováčová J. Výrostková I. Regecová E. Dudriková J. Zahumenská S. Marcinčák

Polish Journal of Veterinary Sciences | 2024 | vol. 27 | No 2 | 229-239 | DOI: 10.24425/pjvs.2024.149353

Słowa kluczowe enzymatic activity food safety microorganisms milk quality milk contamination pigment production Pseudomonas raw milk spoilage

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Abstrakt

Pseudomonas spp. are a psychrotrophic species associated with milk spoilage caused by its enzymatic activities. The aim of this study was to identify Pseudomonas spp. in raw cow’s milk and to investigate their associated enzymatic properties and the ability to produce pyoverdine pigment. For microbiological analysis, 2 ml of milk samples was taken in sterile sample boxes. Milk sampling was carried out according to the principles of STN EN ISO 707. By identification using the PCR method, of n=320 samples of raw cow milk a total of 73 isolates of Pseudomonas spp. were identified as P. putida (34.25%); P. fragi (13.70%); P. lundensis (9.59%) and Pseudomonas spp. (42.47%). Proteolytic activity determined at a temperature of 7°C was positive from n=20 selected isolates of Pseudomonas spp. (60%) isolates and a temperature of 25°C was positively detected (85%). Lipolytic activity determined at a temperature of 7°C was confirmed in 35% of isolates and a temperature of 25°C it was confirmed in 70% isolates. Pyoverdine pigment production was detected in 65% of isolates. The results reveal the enzymatic activity of Pseudomonas spp. present in raw cow’s milk and its spoilage potential at different temperatures in relation to pigment production.

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Autorzy i Afiliacje

M. Kováčová

1

J. Výrostková

1

I. Regecová

1

E. Dudriková

1

J. Zahumenská

1

S. Marcinčák

1

Department of Food Hygiene Technology and Safety, University of Veterinary Medicine and Pharmacy in Košice, Komenského 73, 041 81 Košice, Slovakia

Tenosynovial giant cell tumor

Monika Kager Richard Kager Paulina Fałek Artur Fałek Grzegorz Szczypiór Joanna Niemunis-Sawicka Ludomira Rzepecka-Wejs Elżbieta Starosławska Franciszek Burdan

Folia Medica Cracoviensia | 2022 | Vol. 62 | No 2 | 93-107 | DOI: 10.24425/fmc.2022.141702

Słowa kluczowe pigmented villonodular synovitis PVNS tenosynovial giant cell tumor epidemiology diagnosis treatment

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Abstrakt

Tenosynovial Giant Cell Tumor (TGCT) is a group of typically benign lesions arising from the synovium of joints, bursae and tendon sheaths. Depending on their growth pattern and clinical course, they are divided into localized and diffuse types. It is predominantly caused by a mutation in the stromal cells of the synovial membrane leading to overexpression of the colony stimulating factor 1 that recruits CSF1R-expressing cells of the mononuclear phagocyte lineage into the tumor mass. The lesions contain mainly histiocyte-like and synovial cells accompanied by varying numbers of multinucleated giant cells, mononuclear cells, foam cells, inflammatory cells and hemosiderin deposits. The gold standard for detect-ing and monitoring the disease is MRI, where the characteristic hemosiderin accumulation can be best appreciated, but it is a histological examination that is most conclusive. The main treatment is surgical resection of all pathological tissue, but radio- and chemotherapy are also viable options for certain groups of patients.

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Autorzy i Afiliacje

Monika Kager

1

Richard Kager

2

Paulina Fałek

3

Artur Fałek

3

Grzegorz Szczypiór

4

Joanna Niemunis-Sawicka

4 5

Ludomira Rzepecka-Wejs

6

Elżbieta Starosławska

1

Franciszek Burdan

1 7

Radiology Department, St Johns’ Cancer Center, Lublin, Poland
Public Independent Clinical Hospital Number 4, Lublin, Poland
Independent Public Healthcare, Puławy, Poland
MRI Unit of Maritime Medical Center, Gdańsk, Poland
2nd Radiology Department, Medical University of Gdańsk, Gdańsk, Poland
Goris-Med, Gdańsk, Poland
Human Anatomy Department, Medical University of Lublin, Lublin, Poland

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Tenosynovial giant cell tumor

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