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Wyświetlanie 1-15 z 27
Tytuł:
Biological evaluation of β-1,3-glucan/HA bone scaffold fabricated via new method
Autorzy:
Klimek, K.
Przekora, A.
Ginalska, G.
Powiązania:
https://bibliotekanauki.pl/articles/284634.pdf
Data publikacji:
2016
Wydawca:
Akademia Górniczo-Hutnicza im. Stanisława Staszica w Krakowie. Polskie Towarzystwo Biominerałów
Tematy:
curdlan
scaffolds
biomaterials
Źródło:
Engineering of Biomaterials; 2016, 19, 138; 52
1429-7248
Pojawia się w:
Engineering of Biomaterials
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Dialysis method for β-1,3- glucan gelation provides high biocompatibility of β-1,3-glucan/HA bone scaffold
Autorzy:
Klimek, K.
Przekora, A.
Wójcik, M.
Ginalska, G.
Powiązania:
https://bibliotekanauki.pl/articles/284818.pdf
Data publikacji:
2018
Wydawca:
Akademia Górniczo-Hutnicza im. Stanisława Staszica w Krakowie. Polskie Towarzystwo Biominerałów
Tematy:
dialysis
bone scaffolds
biocompatibility
Źródło:
Engineering of Biomaterials; 2018, 21, 148; 11
1429-7248
Pojawia się w:
Engineering of Biomaterials
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Effect of rootstock on yield quantity and quality of grapevine ‘Regent’ in South-Eastern Poland
Autorzy:
Kapłan, M.
Klimek, K.
Borowy, A.
Najda, A.
Powiązania:
https://bibliotekanauki.pl/articles/11858689.pdf
Data publikacji:
2018
Wydawca:
Uniwersytet Przyrodniczy w Lublinie. Wydawnictwo Uniwersytetu Przyrodniczego w Lublinie
Tematy:
South-Eastern Poland
plant cultivation
grapevine
grape
Regent cultivar
fruit
fruit quality
fruit size
rootstock effect
yield quantity
yield quality
plant research
Opis:
Globally, the application of rootstocks for grapevine cultivation has been a standard, while in the northern regions, like in Poland where the viticulture tradition is relatively short, the selection of the most suitable rootstock types requires multi-year observation and research. The objective of the present study was to assess the effect of six following rootstock types: ‘101-14 Mgt’, ‘161-49C’, ‘125AA’, ‘5BB’, ‘SO4’, ‘SORI’, and own-rooted vines on yield quantity and quality of ‘Regent’ grapevine in south-eastern Poland. The three-year research period indicates that the vines on ‘125AA’ tended to produce not only the highest yields but had positive influence on the number and weight of clusters and berry weight as well. Whereas the vines grafted onto ‘161-49C’ gave the lowest yields and had the smallest number of clusters per vine. The fruit extract content in ‘Regent’ grapes on ‘101-14 Mgt’ rootstock was found to be significantly lowest among those under study. The extract content and yield of grapevines evaluated in the own-rooted vines and those grafted to the rootstocks which formed one group, did not differ.
Źródło:
Acta Scientiarum Polonorum. Hortorum Cultus; 2018, 17, 4; 117-127
1644-0692
Pojawia się w:
Acta Scientiarum Polonorum. Hortorum Cultus
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Ten-year secular trend of overweight and obesity in school children in south-eastern Poland
Autorzy:
Mazur, A.
Klimek, K.
Telega, G.
Filip, R.
Malecka-Tendera, E.
Powiązania:
https://bibliotekanauki.pl/articles/50607.pdf
Data publikacji:
2014
Wydawca:
Instytut Medycyny Wsi
Źródło:
Annals of Agricultural and Environmental Medicine; 2014, 21, 3
1232-1966
Pojawia się w:
Annals of Agricultural and Environmental Medicine
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Risk factors for obesity development in school children from South-Eastern Poland
Autorzy:
Mazur, A
Klimek, K.
Telega, G.
Hejda, G.
Wdowiak, L.
Malecka-Tendera, E.
Powiązania:
https://bibliotekanauki.pl/articles/50530.pdf
Data publikacji:
2008
Wydawca:
Instytut Medycyny Wsi
Tematy:
girl
risk factor
obesity
school child
human disease
boy
biological risk factor
child
Źródło:
Annals of Agricultural and Environmental Medicine; 2008, 15, 2
1232-1966
Pojawia się w:
Annals of Agricultural and Environmental Medicine
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The biomechanical formation of trees
Autorzy:
Jelonek, T.
Tomczak, A.
Karaszewski, Z.
Jakubowski, M.
Arasimowicz-Jelonek, M.
Grzywinski, W.
Kopaczyk, J.
Klimek, K.
Powiązania:
https://bibliotekanauki.pl/articles/52724.pdf
Data publikacji:
2019
Wydawca:
Sieć Badawcza Łukasiewicz - Instytut Technologii Drewna
Źródło:
Drewno. Prace Naukowe. Doniesienia. Komunikaty; 2019, 62, 204
1644-3985
Pojawia się w:
Drewno. Prace Naukowe. Doniesienia. Komunikaty
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Wettability and Surface Free Energy of Ti(C,N) Coatings on Nickel-based Casting Prosthetic Alloys
Autorzy:
Banaszek, K.
Klimek, L.
Powiązania:
https://bibliotekanauki.pl/articles/381148.pdf
Data publikacji:
2015
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
dental alloy
wettability
contact angle
surface tension
surface free energy
stop dentystyczny
zwilżalność
kąt zwilżania
napięcie powierzchniowe
energia powierzchniowa swobodna
Opis:
The production process of prosthetic restorations runs in two stages. In the first stage, the prosthetic foundation is produced of metal alloys. In the second stage, a facing material is applied on the produced element. In both stages, the wettability is significantly important, as well as the free surface energy relating to it. The quality of the obtained cast depends on the surface phenomena occurring between the metal alloy and the material of which the casting mould is made. The performed examinations also point to a relation between the ceramics joint and the base, depending on the wetting angle. The aim of the presented paper was to examine influence of the composition of a Ti(C,N)-type coating on bases made of the Ni-Cr prosthetic alloy on the wettability and the surface free energy. The test material were disks made of the Ni-Cr alloy with the diameter of 8 mm. The disks were divided into five groups, which were covered with Ti(C,N) coatings, with different amounts of C and N in the layer. In order to determine the surface free energy (γs), the wetting angle was measured. Two measure liquids were applied: distilled water and diiodomethane. The obtained results of the measurements of the water-wetting angles suggest that together with the increase of the ratio of nitrogen to carbon in the Ti(C,N) coating, the surface hydrophobicity increases as well. In all the samples, one can see a large difference between the energy values of the polar and the apolar components. The high values of the polar components and the low values of the apolar ones make it possible to conclude that these surfaces exhibit a greater affinity to the polar groups than to the apolar ones. On the basis of the analysis of the surface free energy, one can state that covering the alloy with Ti(C,N)-type coatings should not decrease the adhesion of the ceramics to the alloy, whereas TiC coatings should lead to the latter’s improvement. Due to their hydrophilicity, TiC coatings should decrease the adhesion of bacteria to the surface and hinder the formation of a bacterial biofilm.
Źródło:
Archives of Foundry Engineering; 2015, 15, 3; 11-16
1897-3310
2299-2944
Pojawia się w:
Archives of Foundry Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The effect of abrasive blasting on the strength of a joint between dental porcelain and metal base
Autorzy:
Pietnicki, K.
Wołowiec, E.
Klimek, L.
Powiązania:
https://bibliotekanauki.pl/articles/306577.pdf
Data publikacji:
2014
Wydawca:
Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej
Tematy:
abrasive blasting
metal–porcelain joint
strength
materiały stomatologiczne
połączenie
moc
porcelana
metal
Opis:
This paper presents the effect of selected parameters of abrasive blasting on the strength of a joint between dental porcelain and metal base. Experiments were conducted for different grain sizes of abrasive material and different blasting angles, with a constant blasting pressure. InLine dental porcelain was fused on samples of cobalt-chromium alloy following abrasive blasting; they were subsequently subjected to shearing forces on a testing machine. The fractures were observed under an electron scanning microscope in order to determine the character and course of fracturing. Strength tests showed that the grain size of abrasive material was a parameter with the greatest effect on the strength. The best effects were achieved for samples subjected to abrasive blasting with material with grain size of 110 μm. No statistically significant differences were found for the strength of samples worked at different angles. The results of the fractographic examinations have shown that in all the samples, fracturing occurred mainly along the porcelain–metal boundary, with few cases of fracturing through porcelain.
Źródło:
Acta of Bioengineering and Biomechanics; 2014, 16, 1; 63-68
1509-409X
2450-6303
Pojawia się w:
Acta of Bioengineering and Biomechanics
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Effect of aluminium and magnesium on the corrosion resistance of zinc coatings
Autorzy:
Klimek, L.
Waś-Solipiwo, J.
Dybowski, K.
Powiązania:
https://bibliotekanauki.pl/articles/102824.pdf
Data publikacji:
2017
Wydawca:
Stowarzyszenie Inżynierów i Techników Mechaników Polskich
Tematy:
hot-dip galvanizing
Zn–Al-Mg coating
corrosion resistance
Opis:
This article presents the research on corrosion resistance of Zn-Al-Mg coatings with varying aluminium and magnesium content. Aluminium and magnesium were added directly to the zinc bath at 10:1 rate. There was found more than sixfold increase in corrosion resistance of zinc coatings with aluminium content at the level of 4% of weight and magnesium content at the level of 0.4% of weight. In contrast to the amounts applied in the literature, such content of these alloy additives in the zinc bath limits to a significant extent the amount of intermetallic phases in zinc coatings obtained from such baths. This, in consequence, results in high resistance to corrosion with simultaneous retention of high plasticity of these coatings.
Źródło:
Advances in Science and Technology. Research Journal; 2017, 11, 2; 28-32
2299-8624
Pojawia się w:
Advances in Science and Technology. Research Journal
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Biodentine management and setting time with Vicat and Vickers evaluation; a survey-based study on clinicians experience
Autorzy:
Buła, K.
Palatyńska-Ulatowska, A.
Klimek, L.
Powiązania:
https://bibliotekanauki.pl/articles/1818516.pdf
Data publikacji:
2020
Wydawca:
Stowarzyszenie Komputerowej Nauki o Materiałach i Inżynierii Powierzchni w Gliwicach
Tematy:
materials
biomaterials
biodentine
tricalcium silicate cement
setting time
materiały
biomateriały
biodentyna
cement trójwapniowy
czas wiązania
Opis:
Purpose: of this paper was to analyse clinicians’ views on the management and handling procedures of the Biodentine tricalcium silicate cement with the following evaluation of the real setting time of the material with two independent physical tests. Design/methodology/approach: A survey study included 174 clinicians who answered the questionnaire designed to collect opinions on the Biodentine management during endodontic procedures. To verify the setting time of the cement, two independent hardness tests were performed. Macroscopic evaluation was carried out using the Vicat device. Microscopic assessment with subsequent SEM observation was conducted with the aid of the Clemex appliance. Findings: 43% of respondents using Biodentine in their practice described the setting time as long or definitively too long. One fifth of the dentists surveyed continue dental procedures without waiting. The setting time tests confirmed the existence of two phases of the Biodentine setting process, which corresponds to the general definition of cement setting. After mixing of the material, the initial setting stage lasts for 15 minutes. The next one, described by the authors as “maturation” of Biodentine lasts for 120 minutes. Research limitations/implications: The material initially sets within 15 minutes, however it is not the end of the process. In certain endodontic procedures the awareness of a longer setting time of Biodentine is essential for decision-making in root canal therapy. Practical implications: It is advisable to divide the endodontic treatment with Biodentine into two separate appointments. Originality/value: From the clinicians’ perspective the setting time and correct handling of Biodentine are crucial factors in the successful endodontic therapy. The information regarding proper material management is included in this paper
Źródło:
Archives of Materials Science and Engineering; 2020, 103, 2; 75--85
1897-2764
Pojawia się w:
Archives of Materials Science and Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Pot marigold (Calendula officinalis L.) - a position in classical phytotherapy and newly documented activities
Autorzy:
Szopa, A.
Klimek-Szczykutowicz, M.
Jafernik, K.
Koc, K.
Ekiert, H.
Powiązania:
https://bibliotekanauki.pl/articles/12716309.pdf
Data publikacji:
2020
Wydawca:
Uniwersytet Przyrodniczy w Lublinie. Wydawnictwo Uniwersytetu Przyrodniczego w Lublinie
Opis:
The flower (inflorescence, basket-type inflorescence) of marigold (Calendulae officinalis flos) is a wellknown plant raw material in traditional phytomedicine. It has a complex chemical composition, dominated by flavonoids and terpenoids. Terpenoids are mainly represented by oleanolic acid derivatives specific for this species: triterpenoid saponins – calendulosides A–H and triterpenoid glycosides, so-called calendulaglycosides A and B. Biological activity profiles of the raw material, such as anti-inflammatory, antimicrobial, immunostimulatory and antioxidant properties, determine its use especially in the treatment of dermatological diseases. In addition to spasmolitic, hypolipemic and antidiabetic properties of this flower, scientific studies also demonstrated its cardioprotective, hepatoregenerative, pancreas-regenerating, neuroprotective and even anticancer health-promoting effects. Moreover, C. officinalis is used in the cosmetology and food industry.
Źródło:
Acta Scientiarum Polonorum. Hortorum Cultus; 2020, 19, 3; 47-61
1644-0692
Pojawia się w:
Acta Scientiarum Polonorum. Hortorum Cultus
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Oribatid mites (Acari, Oribatida) on plantations of chokeberry and blackcurrant under microirrigation
Autorzy:
Klimek, A.
Chachaj, B.
Rolbiecki, S.
Blachowicz, K.
Powiązania:
https://bibliotekanauki.pl/articles/61160.pdf
Data publikacji:
2013
Wydawca:
Polska Akademia Nauk. Stowarzyszenie Infrastruktura i Ekologia Terenów Wiejskich PAN
Tematy:
oribatid mite
Acari
Oribatida
plantation
chokeberry
black currant
microirrigation
drip irrigation
Opis:
The aim of the present research was to compare the communities of oribatid mites (Oribatida) on the plantations of chokeberry (Aronia melanocarpa (Michx.) Elliott) and blackcurrant (Ribes nigrum L.) as well as to define the effect of microirrigation on those Acari. The experiment was performed in degraded Phaeozems formed from sand, on shallow-deposited sand in Kruszyn Krajeński in the vicinity of Bydgoszcz. The soil reaction was slightly acid or acid and the differences in the acidity between chokeberry and blackcurrant were inconsiderable. The abundance of oribatid mites on chokeberry and blackcurrant plantations ranged from 3110 to 5290 individuals · m-2 and it was much higher, as compared with the neighbouring set-aside. The density of Oribatida on blackcurrant plantation was clearly higher than in chokeberry; however there was recorded no significant effect of the type of irrigation on the density. In total on both plantations there were reported 31 species of oribatid mites; mean species number s in blackcurrant was higher than in chokeberry. The dominance structure of oribatid mites on the chokeberry plantation was more even than in blackcurrant and in Tectocepheus velatus communities dominated mostly. The species preferred the blackcurrant plantation and irrigation stimulated its abundance. Chamobates schutzii, an oribatid mite, came second; it preferred the soil of chokeberry plantation; it was especially numerous on irrigated stands. Scutovertex sculptus also demonstrated some preference for chokeberry soil and no tolerance to irrigation. Whereas such oribatid mite species as Gymnodamaeus bicostatus, Metabelba pulverulenta, Oppiella nova, Quadroppia quadricarinata and Damaeus sp. showed some preference for the blackcurrant plantation.
Źródło:
Infrastruktura i Ekologia Terenów Wiejskich; 2013, 1/III
1732-5587
Pojawia się w:
Infrastruktura i Ekologia Terenów Wiejskich
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Occurrence of oribatid mites (Acari: Oribatida) on the sites of a new species Hierochloë repens (Host) P.B. in Bydgoszcz area
Autorzy:
Klimek, A.
Gęsiński, K.
Gackowski, G.
Kobierski, M.
Powiązania:
https://bibliotekanauki.pl/articles/101145.pdf
Data publikacji:
2017
Wydawca:
Polska Akademia Nauk. Stowarzyszenie Infrastruktura i Ekologia Terenów Wiejskich PAN
Tematy:
invasive species
Hierochloë repens
oribatid mites
biodiversity
bioindication
Opis:
The study was conducted within the Bydgoszcz limits and in the vicinity of city Bydgoszcz at seven different habitats of Hierochloë repens presence: city district Fordon - (1), (2), (3) and (4); city district Kapuściska - (5), and Białe Błota near Bydgoszcz - (6) and (7). Samples for acarological analyses were collected from the plots covered with Hierochloë repens in spring (27 May) and autumn (28 October) 2014. The density of oribatid mites on the sites with Hierochloë repens was highly variable. High density of these microarthropods was characteristic of plots (2) with Convolvulo-Brometum inermis, (5) with Arrhenatheretum elatioris and (7) covered with grassy herbaceous plants growing on fertile soils. Particularly low density of oribatid mites was observed for plot (3) with Koelerio-Corynephoretea and Festuco-Brometea communities and the lowest content of carbon and nitrogen in the soil. Depending on the site and sample collection time, four to 22 species of oribatid mites were identified. Statistical analysis (Mann-Whitney U test) of mean number of species per sample s identified two groups of plots for both sample collection terms characterized by either low (1.00-3.10) or high values (3.30-7.40) of this parameter. The first group included plots (1), (3) and (6), and the second (2), (4), (5) and (7). The following species of oribatid mites dominated on the plots covered with Hierochloë repens: Tectocepheus velatus - (1), (2) and (6); Scheloribates laevigatus - (3), Oppiella nova - (4), Eupelops occultus - (5), Liebstadia similis - (7).
Źródło:
Infrastruktura i Ekologia Terenów Wiejskich; 2017, IV/2; 1713-1724
1732-5587
Pojawia się w:
Infrastruktura i Ekologia Terenów Wiejskich
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Possibilities of applying Ti (C, N) coatings on prosthetic elements : research with the use of human endothelial cells
Autorzy:
Banaszek, K.
Wiktorowska-Owczarek, A.
Kowalczyk, E.
Klimek, L.
Powiązania:
https://bibliotekanauki.pl/articles/306892.pdf
Data publikacji:
2016
Wydawca:
Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej
Tematy:
materiały stomatologiczne
stopy stomatologiczne
węglikoazotki tytanu
powłoka
cellviability
microvascular endothelial cells
Ni-Cr
dental alloys
titanium carbonitride
Ti(C, N)
coating
Opis:
Purpose: The aim of our study was to examine the effect of prosthetic alloys with Ti (C, N) coatings on viability and pro life ration of human cells employing an MTT assay with the use of human microvascular endothelial cells derived from the skin – HMEC-1 (Human Microvascular Endothelial Cells-1). Methods: Cylindrical shape samples made of Ni-Cralloy were divided into S1-S5 groups and coated with Ti (C, N) layers with different content of C and N. S0 group – control group without layer. The alloys (S0-S5) were stored in an experimental medium (MCDB131 with antibiotics) for 30 days and then HMEC-1 cells were incubated in the alloy extract for 24 and 96 hours. Next, cell viability was determined using MTT method. Results: In the case of samples incubated for both 24 and 96 hours there are statistically significant differences (with p-value <0.05) between the uncoated samples (S0 group) and all the other Ti (C, N) coated samples. Higher absorbance values were observed in all coated groups than in the control S0 group, where cell growth was statistically significantly lower. Conclusions: During incubation of endothelial cells with coated samples the number of cells was significantly bigger than the number with uncoated alloys. The best viability of cells was obtained from the S = 3 (with 51.94% at. Ti, 28.22% at. C and 19.84% at. N) group of samples. Ti (C, N) coatings may be applied as protective components on prosthetic elements made of base metal alloys.
Źródło:
Acta of Bioengineering and Biomechanics; 2016, 18, 1; 129-136
1509-409X
2450-6303
Pojawia się w:
Acta of Bioengineering and Biomechanics
Dostawca treści:
Biblioteka Nauki
Artykuł
Wyświetlanie 1-15 z 27

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