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Wyświetlanie 1-10 z 103
Tytuł:
The effect of plasma treatment on surface physicochemical properties of chitosan/glucan/HA biomaterial
Autorzy:
Przekora, A.
Pawłat, J.
Terebun, P.
Kwiatkowski, M.
Ginalska, G.
Powiązania:
https://bibliotekanauki.pl/articles/283980.pdf
Data publikacji:
2018
Wydawca:
Akademia Górniczo-Hutnicza im. Stanisława Staszica w Krakowie. Polskie Towarzystwo Biominerałów
Tematy:
plasma
biomaterials
physicochemical properties
Źródło:
Engineering of Biomaterials; 2018, 21, 148; 9
1429-7248
Pojawia się w:
Engineering of Biomaterials
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Evaluation of the differentiation of structural and physicochemical properties of orthodontic wires of AlSl 304 stainless steel
Autorzy:
Grygier, D.
Hoppe, V.
Zięty, A.
Rutkowska-Gorczyca, M.
Powiązania:
https://bibliotekanauki.pl/articles/284388.pdf
Data publikacji:
2018
Wydawca:
Akademia Górniczo-Hutnicza im. Stanisława Staszica w Krakowie. Polskie Towarzystwo Biominerałów
Tematy:
wires
orthodontic arches
physicochemical properties
Źródło:
Engineering of Biomaterials; 2018, 21, 148; 14
1429-7248
Pojawia się w:
Engineering of Biomaterials
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Influence of chitosan nonwoven fabric modification on its physicochemical and biological properties
Autorzy:
Dzierzkowska, Ewa
Ścisłowska-Czarnecka, Anna
Kolesińska, Beata
Boguń, Maciej
Stodolak-Zych, Ewa
Powiązania:
https://bibliotekanauki.pl/articles/284448.pdf
Data publikacji:
2019
Wydawca:
Akademia Górniczo-Hutnicza im. Stanisława Staszica w Krakowie. Polskie Towarzystwo Biominerałów
Tematy:
nonwoven fabric
modification
physicochemical properties
biological properties
Źródło:
Engineering of Biomaterials; 2019, 22, no.153; 108
1429-7248
Pojawia się w:
Engineering of Biomaterials
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Study of some physicochemical and rheological properties of irradiated honey
Autorzy:
Bera, A
Almeida-Muradian, L. G.
Sabato, S. F.
Powiązania:
https://bibliotekanauki.pl/articles/147025.pdf
Data publikacji:
2008
Wydawca:
Instytut Chemii i Techniki Jądrowej
Tematy:
gamma radiation
honey
rheology
physicochemical properties
Opis:
Honey is a sweet substance produced by bees, well appreciated in many places and its consumption has been increased either as raw material or as a food ingredient. Its use as food by the consumer, or even for exportation, implies safety inherent in its quality and processing control. Gamma radiation can be applied in food or ingredients for many objectives like pathogens microorganisms’ reduction, disinfestations, and sterilization. The aim of this work was to verify some physicochemical modifications, as well as rheological evaluation of honey submitted to irradiation at 10 kGy. The physicochemical parameters analyzed were: moisture, HMF, free acidity, pH, sugars and ash. The rheological behavior was measured at different temperatures. The results indicated that few changes occurred; the rheological behavior was not impaired and did not present any significant physicochemical alteration.
Źródło:
Nukleonika; 2008, 53, suppl. 2; 85-87
0029-5922
1508-5791
Pojawia się w:
Nukleonika
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Physicochemical Properties of Soils derived from Sandstone Parent Materials under Selected Land use types at Agoi-Ibami in Central Cross River State, Nigeria
Autorzy:
Eyong, M. O.
Akpa, E. A.
Powiązania:
https://bibliotekanauki.pl/articles/1076791.pdf
Data publikacji:
2019
Wydawca:
Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
Tematy:
Physicochemical properties
Sandstone
land use types
Opis:
Three profiles were sited on the major landscape elements of crest, middle slope and lower slope on three land uses; Forest (FS), Rubber (RS) and arable cropping (AS) at Agoi-Ibami in Central Cross River State, Nigeria. For study purposes, soil samples were collected from the morphogenetic horizons for the analysis of physical and chemical properties. Results showed that the surface horizon textures were mostly sandy loams with little sandy clay loam, while subsurface textures were mostly sandy clay loams with few silt clay loams and clays. The bulk densities were below the ranges of 1.46 to 1.63 g cm-3 for silts and clays and 1.75 g cm-3 for sands. This imposes stresses such as mechanical resistance to root penetration, decrease in cultivation and organic matter. The surface and subsurface pH values vary from 4.9–4.5 in FS, 4.9-4.6 in RS and 4.9 in AS, indicating that the soils are very strongly acidic. The Organic carbon contents was low with mean values of 4.33 and 0.6 % in surface and subsurface for FS, 2.10 and 0.50 % for surface and subsurface for RS, while surface and subsurface values proved to be 0.57 and 0.31 % for AS. The nitrogen contents was also low, mean values of 0.16 and 0.06 % for surface and subsurface for FS, 0.23 and 0.08 % for surface and subsurface for RS, and 0.19 and 0.10 % for surface and subsurface for AS. The content and available phosphorus are equally low, except for AS, with surface mean values ranging from 11.52 mg kg-1 to 13.87 mg kg-1. The exchangeable cations, Ca, Mg, K, and Na were very low, while exchangeable H+ and Al3+ were high. Base saturation was also low in FS and AS (< 50%) in surface soils, but higher in AS in the surface and in RS in the subsurface soils. The mean values of organic matter were 4.33 and 0.16 %. The land use should, therefore, be adjusted by application of recommended inorganic fertilizers and organic matter so as to support growth of crops such as maize, yams, cassava etc.
Źródło:
World News of Natural Sciences; 2019, 23; 1-12
2543-5426
Pojawia się w:
World News of Natural Sciences
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Some applications of barium titanate prepared by different methods
Autorzy:
Sydorchuk, Volodymyr
Khalameida, Svitlana
Skwarek, Ewa
Biedrzycka, Adrianna
Powiązania:
https://bibliotekanauki.pl/articles/2146894.pdf
Data publikacji:
2022
Wydawca:
Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej
Tematy:
barium titanate
synthesis
physicochemical properties
photocatalytic properties
Opis:
The paper presents some application of barium titanate synthesized by different methods. Barium titanate samples were prepared by four procedures: solid state, mechanochemical as direct synthesis and modification as well as hydrothermal and microwave. The obtained samples were systematically studied using X-ray diffraction, nitrogen adsorption, Fourier transform infrared spectroscopy (FTIR), potentiometric titration, and quasi-elastic light scattering and zeta potential measurements. The values of pHpzc (point of zero charge) and pHIEP (isoelectric point) characteristic of the electrical double layer were determined. The prepared samples were tested as photocatalysts under visible light. As a result, relationship between the conditions of barium titanate synthesis, its physicochemical and electrokinetic parameters, as well as photocatalytic activity under visible light was first established.
Źródło:
Physicochemical Problems of Mineral Processing; 2022, 58, 2 (Special issue - selected papers conference: Physicochemistry of interfaces - instrumental methods); art. no. 147192
1643-1049
2084-4735
Pojawia się w:
Physicochemical Problems of Mineral Processing
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Synthesis and characterization of polymer biocomposites with lignin
Autorzy:
Goliszek, Marta
Podkościelna, Beata
Powiązania:
https://bibliotekanauki.pl/articles/110212.pdf
Data publikacji:
2019
Wydawca:
Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej
Tematy:
lignin
biocomposites
physicochemical properties
eco-filler
photopolymerization
Opis:
A new method of synthesis of polymer biocomposites with lignin using the photopolymerization method has been proposed. Bisphenol A glycerolate (1 glycerol/phenol) diacrylate (BAGDA) was used as a main monomer and 2-ethylhexyl acrylate (EHA) as a reactive diluent. Lignin (L) was applied as an eco-filler. The influence of the increasing lignin content (0; 2.5; 5; 10; 20% w/w) on the properties of the obtained biocomposites was investigated. The chemical structure of biomaterials was investigated by the attenuated total reflectance Fourier transform infrared spectroscopy (ATR/FT-IR) method while the thermal properties were studied by the differential scanning calorimetry (DSC) and thermogravimetric analysis (TG/DTG). Their hardness was measured by the Shore D method. Incorporation of the biopolymer into the structure of polymer composites could be a promising alternative to synthetic materials and would contribute to better lignin utilization. The results of the study are of practical importance in prospective applications of biocomposites with lignin.
Źródło:
Physicochemical Problems of Mineral Processing; 2019, 55, 6; 1375-1381
1643-1049
2084-4735
Pojawia się w:
Physicochemical Problems of Mineral Processing
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Recent studies of irradiated mangoes in Brazil : a trend towards commercial approach
Autorzy:
Sabato, S. F.
Silva, J. M.
Cruz, J. N.
Broisler, P. O.
Rela, P. R.
Salmieri, S.
Lacroix, M.
Powiązania:
https://bibliotekanauki.pl/articles/148822.pdf
Data publikacji:
2008
Wydawca:
Instytut Chemii i Techniki Jądrowej
Tematy:
gamma radiation
mangoes
physicochemical properties
sensory evaluation
Opis:
Mango is an important commodity to our country as Brazil is a great producer and exporter of tropical fruits. Nowadays, Mexico and India are the main exporters of mango in the world and Brazil occupies the third position in this ranking. As these countries have adopted gamma radiation as a phytosanitary treatment and signed a bilateral agreement with the United States for exporting mango to this country, Brazil has to be up-to-dated with this trend. The Institute of Nuclear and Energy Researches together with field producers in the northeastern region and partners like the International Atomic Energy Agency, the Canadian Irradiation Center and Empresa Brasileira de Agropecuária joined to demonstrate this technology, its application and its commercial feasibility. The whole project was structured in two parts that involved around 1300 mangoes. The first step consisted mainly in studying the quality of irradiated mangoes within our territory, using a multipurpose semi-commercial cobalt facility, and comparing two harvesting points of the fruits. The second one was an international consignment of irradiated fruits from Brazil to Canada, where the control sample consisted of fruits treated with a hot water dip. The financial part of the feasibility study covers the scope of the investment, including the net working capital and production costs. In a summarized way to express, the results from physicochemical analysis and sensory evaluation were favorable, indicating that gamma radiation is a potential quarantine treatment.
Źródło:
Nukleonika; 2008, 53, suppl. 2; 77-79
0029-5922
1508-5791
Pojawia się w:
Nukleonika
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Effect of different methods of treatment of municipal sewage sludge on their physicochemical properties and their agricultural utilization
Autorzy:
Malinowska, E.
Jankowski, K.
Wiśniewska-Kadżajan, B.
Sosnowski, J.
Kolczarek, R.
Powiązania:
https://bibliotekanauki.pl/articles/123934.pdf
Data publikacji:
2015
Wydawca:
Polskie Towarzystwo Inżynierii Ekologicznej
Tematy:
municipal sewage sludge
physicochemical properties
agricultural utilization
Opis:
In the study the physicochemical properties of selected municipal sewage sludge were compared using the reports on waste generation from the years 2007–2012 in the Mazovia voivodship. The selection was done on the basis of different methods of sludge processing and the number of equivalent inhabitants (NEJ) supported by sewage. Physical and chemical properties of municipal sewage sludge were significantly dependent on the method of purification and treatment methods. These sludges were characterized by a high content of organic matter and macronutrients. The amount of heavy metals (Pb, Cd, Cr, Cu, Ni, Hg and Zn) were within acceptable standards for municipal sewage sludge used in agriculture. Municipal sewage sludge treated by biological method with higher nutrients removal did not create bacteriological danger and were used in agriculture, generally to the cultivation of all agricultural products. Sewage sludge sanitized with lime and subjected to anaerobic digestion did not meet bacteriological standards, which eliminated their use in agriculture.
Źródło:
Journal of Ecological Engineering; 2015, 16, 2; 76-81
2299-8993
Pojawia się w:
Journal of Ecological Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Collagen - structure, properties and application
Autorzy:
Owczarzy, Aleksandra
Kurasiński, Robert
Kulig, Karolina
Rogóż, Wojciech
Szkudlarek, Agnieszka
Maciążek-Jurczyk, Małgorzata
Powiązania:
https://bibliotekanauki.pl/articles/1844977.pdf
Data publikacji:
2020
Wydawca:
Akademia Górniczo-Hutnicza im. Stanisława Staszica w Krakowie. Polskie Towarzystwo Biominerałów
Tematy:
collagen
collagen structure
physicochemical properties
biological properties
DDS
physicochemical techniques
atelocollagen
Opis:
Collagen is the dominant component of the extracellular matrix of mammals. It occurs almost in all animal tissues. Collagen is a highly heterogeneous protein. The collagen protein family is characterized by great diversity in terms of structure, occurrence, and function. Up till now, 29 types of collagens proteins have been classified. The representation of individual types of collagen has certain common features. The most important property is the above-average mechanical strength that results directly from the spatial structure. Collagen is a building material for most tissues and organs. It also plays an important role in the process of cell growth and differentiation, which results from the specific structure of collagen fibers as well as their ability to adhere. The development of research techniques allowed to study in detail the molecular structure and properties of collagen. Therefore, collagen has become a subject of interest in many branches of science. Synthetic recombinant collagen fibers were developed as the basis of collagen biomaterials for medical applications, including implantology or gynecology. The specific structure of collagen also makes it applicable as a protein carrier in drug delivery systems (DDS), particularly in the treatment of cancer and genetic diseases. The use of tissue regenerative abilities and an interdisciplinary look at the properties of collagen and collagen-based biomaterials may constitute the future of medical development.
Źródło:
Engineering of Biomaterials; 2020, 23, 156; 17-23
1429-7248
Pojawia się w:
Engineering of Biomaterials
Dostawca treści:
Biblioteka Nauki
Artykuł
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