Wyniki wyszukiwania - Biblioteka Nauki

1

Jak przestawic gospodarstwo na ekologiczne

100%

Dziadek M.

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nr 05

18-19

2

STEFANIA LOBACZEWSKA AS A MUSIC CRITIC

100%

Dziadek M.

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nr 4(195)

87-112

EN

This paper analyses the contents and the aesthetic and ideological principles of musical reviews published by Stefania Lobaczewska in 'Gazeta Lwowska' during the years 1928-34. Particular prominence has been given to those elements of her music criticism which allow one to place it within the framework of ideological doctrines and programmes of musical composition of the period and to search for connections of her writing with the 'women's writing' and the socialist realism. The choice of these centexts was motivated by the urgent need to discover the sources of socialist sympathies expressed by a number of Polish authors of that period. Some, Stefania Lobaczewska among them, have been wrongly linked to the Soviet version of the socialist realism. As a young writer, Lobaczewska came into contact with the heritage of the Lvov 'women's movement' and adopted its main principles and attitudes. These involved pursuing the goals of self-improvement and social activism as well as undertaking what Polish feminine culture of that time regarded as a 'woman's sacred duty' - working for the better education and spiritual enrichment of society, and of the lower classes in particular. At the centre of the ideology which Lobaczewska created for herself in her work as reviewer, the key word is 'man', more precisely 'the average man', 'working man', a representative of the 'masses'. Contact with authentic, valuable art is supposed to facilitate the achievement of these results. Such an ideology has a lot in common with the principles expounded by the main representatives of socialism in Poland and is not identical to the Soviet version of socialist doctrine. An important aspect of Lobaczewska's thinking concerned contemporary music. The author perceived it as a stylistically varied, aesthetically uncrystallized preparatory stage on the way towards the formation of a universal 'music of the future'. For Lobaczewska, Karol Szymanowski was an artist of truly exceptional calibre. Reviews devoted to him are almost worshipful in nature. She adopted a similar attitude to other Polish composers. The years of devoted work as a reviewer resulted in a series of essays 'U zródel twórczosci muzycznej' (At the sources of musical creativity), published in 'Gazeta Lwowska' in 1934. On the one hand, they represented a recapitulation of views expressed in her reviews; on the other, they constitute a preparatory stage for her volume 'Ogólny zarys estetyki muzycznej' (An overview of musical aesthetics), published in 1938..

3

Uprawa ziol w Polsce

100%

Dziadek M.

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nr 09

23

4

Europejska siec ekologiczna Natura 2000

100%

Dziadek M.

Biuletyn Informacyjno-Handlowy. Ośrodek Doradztwa Rolniczego Boguchwała

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2005

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nr 09

20

5

Obszary metropolitalne w Stanach Zjedoczonych Ameryki Polnocnej

88%

Dziadek M.

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nr 1

3-14

6

The effect of bioactive glass particle size on properties of poly(ε-caprolactone) based membranes

51%

Dziadek M. , Zagrajczuk B. , Pukas K. , Cholewa-Kowalska K.

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2016

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tom Vol. 19, no. 138 spec. iss.

66

7

Badania biologiczne kompozytów polimerowych zawierających nanocząstki srebra

45%

Ziąbka M. , Dziadek M. , Gryń K. , Klesiewicz K. , Menaszek E.

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tom Vol. 23, nr 2

75--86

PL

Głównym celem pracy jest badanie właściwości biologicznych kompozytów polimerowych otrzymanych w procesie wytłaczania i wtrysku. Do badań użyto medycznego polietylenu o wysokiej gęstości, HDPE. Jako fazę modyfikującą zastosowano nanocząstki srebra, nAg. Właściwości biologiczne materiałów zostały ocenione w wyniku testu cytotoksyczności, żywotności/proliferacji komórek oraz testu działania przeciwbakteryjnego. Na podstawie otrzymanych wyników stwierdzono, że materiały kompozytowe zawierające nanocząstki srebra nie wykazują działania cytotoksycznego wobec komórek osteoblastycznych i fibroblastów ludzkich. Dodatek nanosrebra nie powoduje działania przeciwbakteryjnego zarówno wobec bakterii Gram-dodatnich jak i Gram- -ujemnych. Zwiększanie ilości użytego modyfikatora nie zwiększa działania przeciwbakteryjnego. Komórki osiadłe na próbkach kontrolnych, polimerowych i kompozytowych miały prawidłowy, wrzecionowaty kształt. Zasiedlały ich powierzchnie w dużych ilościach, w sposób równomierny. Zaobserwowano wzrost ilości komórek na powierzchni próbek wraz z zawartością nanocząstek srebra, co związane jest ze wzrostem chropowatości powierzchni.

EN

The main aim of this research is the examination of biological properties of polymer composites obtained in the process of extrusion and injection molding. It has been decided to use high-density medical polyethylene (HDPE) as a matrix, which afterwards has been modified with silver nanoparticles. Biological properties have been examined during cytotoxicity tests, cell viability/cell proliferation tests and antibacterial activity tests. Based on obtained results, it has been proved that composites with addition of silver nanoparticles do not cause cytotoxic effect on osteoblast cells and human fibroblasts, concerning both Gram-positive and Gram-negative bacteria. The increasing amount of modifier does not increase antibacterial activity. The control samples were characterized by high proliferation rate and evenly distributed cells of proper, spindle-like shape. The surface was settled with cells evenly and densely. It has been observed that amount of silver nanoparticles affects cells proliferation what is related to increasing surface roughness.

8

The influence of incubation media on surface properties of bioglass-polymer composites

45%

Flis A. , Zagrajczuk B. , Dziadek M. , Cholewa-Kowalska K. , Laczka M.

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tom Vol. 21, no. 148

99

9

Evaluation of food storage racks available on the Polish market in the hygienic context

45%

Grzesinska W. , Tomaszewska M. , Bilska B. , Trafialek J. , Dziadek M.

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nr 1

EN

Background. Providing safe food products to the consumer depends on the material and technology used and adherence to hygienic practices, throughout the production process. The degree of microbial contamination of a surface is an important indicator of equipment cleanliness and effectiveness of cleaning and disinfection. Used material, construction solutions and quality of the applied devices also have an effect on hygienic status. Objective. The objective of the present study was to evaluate the influence of the design and construction material of selected food storage racks, available on the Polish market, on their hygienic status. Material and methods. The study was based on determination of the capability of microbial growth on the surface of the racks and the effectiveness of their cleaning. Microbiological cleanliness on the surface of the racks was monitored by the contact plates which are able to estimate the total number of microorganisms. Examination of effectiveness of cleaning was conducted by the use of ATP bioluminescence method. Results. This experiment has proven a significant influence of adopted construction solutions on the hygienic status of the examined racks. Presence of antibacterial layer and a choice of the appropriate construction material characterized by a low surface roughness impedes the microbial growth and increases the effectiveness of cleaning. Conclusions. Design solutions have significant impact on the hygienic status of shelves. Selection of a suitable material for the construction of racks can greatly reduce the possibility of the development of microorganism, despite the low efficiency of the cleaning. The application of antimicrobial coatings inhibits microbial growth.

PL

Wprowadzenie. Dostarczanie konsumentowi produktów spożywczych o jak najwyższej jakości, w tym bezpiecznych, uzależnione jest od wykorzystanych surowców, zastosowanej technologii oraz zachowania warunków higienicznych w całym procesie wytwórczym. Stopień zanieczyszczenia mikrobiologicznego powierzchni jest ważnym wskaźnikiem czystości urządzeń oraz prawidłowości procesów mycia i dezynfekcji. Wpływ na higienę urządzeń mają takie czynniki jak zastosowany materiał oraz rozwiązania konstrukcyjne, a także jakość wykonania urządzenia. Cel. Celem pracy była ocena wpływu konstrukcji i użytego materiału na jakość higieniczną wybranych regałów magazynowych, dostępnych na polskim rynku. Materiał i metody. W badaniu sprawdzono zdolność wzrostu drobnoustrojów (ogólna liczba drobnoustrojów) na powierzchniach wybranych regałów. Czystość mikrobiologiczną na powierzchni regałów monitorowano za pomocą płytek kontaktowych do oznaczania ogólnej liczby drobnoustrojów. Oznaczenia wykonano zgodnie z normą PN-ISO 18593 Badanie skuteczności procesu mycia przeprowadzono z wykorzystaniem metody bioluminescencyjnego pomiaru ATP. Wyniki. Doświadczenie wykazało znaczący wpływ zastosowanych rozwiązań konstrukcyjnych na higienę ocenianych regałów. Badania wykazały istotny wpływ rodzaju regału na poziom zanieczyszczenia mikrobiologicznego odnotowanego na powierzchni roboczej regałów oraz na powierzchni połączeń półek ze słupkami nośnymi. Analiza statystyczna wykazała, że w przypadku każdej z prób rodzaj regału miał wpływ na osiągnięte wyniki. Wnioski. Rozwiązania projektowe mają istotny wpływ na higieniczną jakość półek. Dobór odpowiedniego materiału do budowy regałów może znacznie ograniczyć możliwość rozwoju mikroorganizmów, pomimo niskiej efektywności czyszczenia. Zastosowanie powłok antybakteryjnych hamuje wzrost drobnoustrojów.

10

Antioxidant activity of novel PCL/bioactive glass composites enriched with polyphenolic compounds extracted from fruits and leaves of sweet cherry (Prunus avium L.)

38%

Dziadek M. , Dziadek K. , Kopec A. , Zagrajczuk B. , Kudzia M. , Bebenek A. , Cholewa-Kowalska K.

Engineering of Biomaterials

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2017

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tom Vol. 20, no. 143 spec. iss.

25

11

Bioactivity of PLGA-gel-derived bioglass composites

38%

Łączka M. , Maślanka E. , Pawlik J. , Dziadek M. , Zagrajczuk B. , Cholewa-Kowalska K.

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2018

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tom Vol. 3, no. 2

27--34

EN

A series of PLGA (poly L-lactide-co-glycolide) based composites modified with gel-derived glasses in the form of foils were obtained by solvent casting procedure. As a modifier, glass particles with different chemical compositions from the CaO–SiO2, CaO–P2O5–SiO2,and Al2O3–SiO2 systems were used. All glasses were synthesized by the sol-gel process. Evaluation of bioactive properties of obtained composites was made on the basis of surface changes occurring during contact with simulated body fluid. The changes of Ca, P and Si ions concentration in SBF after incubation of composites were also measured. The result showed that all composites with bioglasses (CaO–SiO2, CaO–P2O5–SiO2) exhibit formation of calcium phosphates layer after SBF test, however, kinetics of Ca, Si ion release and P uptake from SBF was dependent on bioglass chemical composition. The higher solubility, as well as faster consumption of phosphorus from SBF, was observed for materials from CaO–SiO2 (T1/PLGA, S1/PLGA) compared to composites with respective bioglass particles from the CaO–P2O5–SiO2(T2/PLGA, S2/PLGA). Our results showed that rate of Si and Ca release from the gel-derived glasses and P uptake from SBF are dependent on both: the concentration of respective ions in the materials and the presence of phosphates in their structure. For materials modified with gel-derived glasses from Al2O3–SiO2 system no significant surface changes during contact with SBF were observed, and it seems that their behavior in physiological solution indicate that they are bio-inert materials.

12

Salivary aldehyde dehydrogenase - temporal and population variability, correlations with drinking and smoking habits and activity towards aldehydes contained in food

38%

Giebultowicz J. , Dziadek M. , Wroczynski P. , Woznicka K. , Wojno B. , Pietrzak M. , Wierzchowski J.

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nr 3

EN

Fluorimetric method based on oxidation of the fluorogenic 6-methoxy-2-naphthaldehyde was applied to evaluate temporal and population variability of the specific activity of salivary aldehyde dehydrogenase (ALDH) and the degree of its inactivation in healthy human population. Analyzed was also its dependence on drinking and smoking habits, coffee consumption, and its sensitivity to N-acetylcysteine. Both the specific activity of salivary ALDH and the degree of its inactivation were highly variable during the day, with the highest activities recorded in the morning hours. The activities were also highly variable both intra- and interpersonally, and negatively correlated with age, and this correlation was stronger for the subgroup of volunteers declaring abstinence from alcohol and tobacco. Moderately positive correlations of salivary ALDH specific activity with alcohol consumption and tobacco smoking were also recorded (rs ~0.27; p = 0.004 and rs = 0.30; p = 0.001, respectively). Moderate coffee consumption correlated positively with the inactivation of salivary ALDH, particularly in the subgroup of non-drinking and non-smoking volunteers. It was found that mechanical stimulation of the saliva flow increases the specific activity of salivary ALDH. The specific activity of the salivary ALDH was strongly and positively correlated with that of superoxide dismutase, and somewhat less with salivary peroxidase. The antioxidant-containing drug N-acetylcysteine increased activity of salivary ALDH presumably by preventing its inactivation in the oral cavity. Some food-related aldehydes, mainly cinnamic aldehyde and anisaldehyde, were excellent substrates of the salivary ALDH3A1 enzyme, while alkenals, particularly those with short chain, were characterized by lower affinity towards this enzyme but high catalytic constants. The protective role of salivary ALDH against aldehydes in food and those found in the cigarette smoke is discussed, as well as its participation in diminishing the effects of alcohol- and smoking-related oxidative stress.

13

Otoimplant - a new middle ear prosthesis as an alternative medical device in operative treatment of hearing

32%

Ziąbka M. , Dziadek M. , Menaszek E. , Banasiuk R. , Królicka A. , Wiatr A. , Wiatr M. , Składzień J.

Engineering of Biomaterials

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2017

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tom Vol. 20, no. 143 spec. iss.

47