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Wyświetlanie 1-11 z 11
Tytuł:
Tectonic geomorphology of the Sudetes (Central Europe) – a review and re-appraisal
Autorzy:
Różycka, M.
Migoń, P.
Powiązania:
https://bibliotekanauki.pl/articles/191769.pdf
Data publikacji:
2017
Wydawca:
Polskie Towarzystwo Geologiczne
Tematy:
morphotectonics
tectonic activity
mountain front
fluvial system
morphometric indices
Sudetes
Opis:
The Sudetes are a mountain range in Central Europe, which owes its emergence to the Cenozoic rejuvenation of an old Variscan orogen, subject to stresses from the Alps and the Carpathians. The gross morphological features of the Sudetes are typically explained as reflecting the superposition of the effects of long-term, rock-controlled denudation and Late Cenozoic differential uplift and subsidence. In this paper, early conceptual models, developed in the 1950s and 1960s and emphasizing alternating uplift and planation phases, are presented first. A review of more recent work focused on tectonic landforms and geomorphic indicators of tectonic movements follows, with special attention to fault-generated escarpments, valley morphology, stream longitudinal profiles, terraces and fans, drainage basin characteristics and regional geomorphometric studies. Attempts to provide a timeframe of tectonic relief differentiation are also summarized. In the closing part of the paper, the existing approaches and findings are re-evaluated in order to identify challenges and perspectives for future work. The availability of high-resolution digital terrain models creates a unique opportunity to quantify relief features and detect even the subtle topographic signatures of recent tectonics. A need to reconcile the results of geomorphological analysis with those emerging from other studies focused on faults is highlighted.
Źródło:
Annales Societatis Geologorum Poloniae; 2017, 87, 4; 275-300
0208-9068
Pojawia się w:
Annales Societatis Geologorum Poloniae
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Amorphization and liquid state separation in Ni80-2xCuxFexP20 alloys
Amorfizacja i podział w stanie ciekłym w stopach Ni80-2xCuxFexP20
Autorzy:
Ziewiec, K.
Prusik, K.
Różycka, M.
Powiązania:
https://bibliotekanauki.pl/articles/263952.pdf
Data publikacji:
2014
Wydawca:
Akademia Górniczo-Hutnicza im. Stanisława Staszica w Krakowie. Wydawnictwo AGH
Tematy:
amorphous materials
amorphization
X-ray diffraction
transmission electron microscopy
materiały amorficzne
amorfizacja
dyfrakcja rentgenowska
transmisyjna mikroskopia elektronowa
Opis:
The aim of the work is to study the ability and potential of glass formation in Ni-Fe-Cu-P alloys. A series of alloys were produced in arc furnace (i.e. Ni70Fe5Cu5P20, Ni60Fe10Cu10P20, Ni50Fe15Cu15P20, Ni40Fe20Cu20P20, Ni30Fe25Cu25P20, Ni20Fe30Cu30P20). The primary microstructure of the ingots was studied. The ribbons in as-melt-spun state were characterized by X-ray diffraction (XRD). The Ni70Fe5Cu5P2, Ni60Fe10Cu10P20 melt-spun alloys were found to be amorphous. For higher copper and iron concentrations a crystalline structure was obtained after melt spinning. This correlated with the tendency for the formation of the Fe-based phases enriched in P and Cu-based poorly alloyed phases which resulted in the formation of crystalline microstructure in melt-spun ribbons. For higher concentration of Fe and Cu, microstructures of the alloys contained constituents resultant from a tendency for separation in the liquid state. It is observed that the formation of the crystal line melt-spun ribbons is caused by the attraction of phosphorus by iron and the formation of copper-based fcc phase.
Celem pracy było zbadanie podatności na zeszklenie oraz możliwości wytworzenia struktury szklistej w stopach wieloskładnikowych Ni-Fe-Cu-P. W piecu łukowym wytworzono serię stopów (tzn.: Ni70Fe5Cu5P20, Ni60Fe10Cu10P20, Ni50Fe15Cu15P20, Ni40Fe20Cu20P20, Ni30Fe25Cu25P20, Ni20Fe30Cu30P20). Badano strukturę pierwotną wlewków. Taśmy w stanie po odlewaniu na wirujący bęben badano za pomocą dyfrakcji rentgenowskiej. Stwierdzono, że stopy Ni70Fe5Cu5P20, Ni60Fe10Cu10P20 odlewane na wirujący bęben były amorficzne. Dla stopów o wyższych zawartościach miedzi i żelaza po odlewaniu na wirujący walec otrzymano strukturę krystaliczną. Fakt ten można powiązać z tendencją do tworzenia faz na osnowie żelaza wzbogaconych w fosfor oraz zubożonych w pozostałe składniki stopowe faz na osnowie miedzi,które przyczyniły się do tworzenia w odlewanych taśmach mikrostruktury krystalicznej. Dla wyższych zawartości żelaza i miedzi, mikrostruktury stopów zawierały składniki fazowe powstające w efekcie tendencji stopów do podziału fazowego w stanie ciekłym. Zaobserwowano, że tworze nie krystalicznych taśm jest spowodowane przez przyciąganie fosforu przez żelazo oraz tworzenie bogatej w miedź fazy o strukturze regularnej ściennie centrowanej.
Źródło:
Metallurgy and Foundry Engineering; 2014, 40, 1; 45-54
1230-2325
2300-8377
Pojawia się w:
Metallurgy and Foundry Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Granite tors of Waldviertel (Lower Austria) as sites of geotourist interest
Granitowe skałki regionu Waldviertel (Dolna Austria) jako obiekty geoturystyczne
Autorzy:
Michniewicz, A.
Różycka, M.
Migoń, P.
Powiązania:
https://bibliotekanauki.pl/articles/128402.pdf
Data publikacji:
2015
Wydawca:
Akademia Górniczo-Hutnicza im. Stanisława Staszica w Krakowie. Wydawnictwo AGH
Tematy:
granite
granite geomorphology
geosites
Bohemian Massif
granit
geomorfologia granitowa
geostanowiska
Masyw Czeski
Opis:
Granites of the South Bohemian Pluton are among the main rocks in the region of Waldviertel in the northern part of Lower Austria. The overall topography is gently rolling, with higher elevations and medium-altitude mountainous relief present only in the south-western part. Tors are the most characteristic residual landforms and occupy different settings, from mountain tops to valley floors. They vary in shapes and dimensions, with castle koppies and boulder clusters being most common. Many tors host well-developed microforms such as weathering pits, karren, runnels, and flared slopes. Balanced rocks are among the highlights of the region. Because of good access residual granite landforms of Waldviertel are well suited to be developed as geosites and geotourist destinations, but there is clearly a deficit of explanation and interpretation. In this paper 15 representative tors are presented, tourist infrastructure is summarized, and a thematic one-day drive is proposed.
Granity plutonu południowoczeskiego należą do głównych skał występujących w regionie Waldviertel w północnej części kraju związkowego Dolna Austria. Region ten odznacza się lekko falistą rzeźbą, z większymi wysokościami i górzystym ukształtowaniem jedynie w części południowo-zachodniej. Skałki stanowią najbardziej charakterystyczny element rzeźby denudacyjnej, zajmując różną pozycję morfologiczną, od szczytów wzniesień po dna dolinne. Są zróżnicowane pod względem kształtu i wymiarów, z dominacją zamczysk skalnych i zgrupowań bloków (skałek rumowiskowych). Morfologię wielu z nich urozmaicają mikroformy, takie jak kociołki wietrzeniowe, żłobki, rynny i nisze kloszowe. Szczególnie interesującym elementem rzeźby regionu są chybotki. Dobra dostępność sprawia, że rezydualne formy granitowe regionu są odpowiednie do zagospodarowania jako geostanowiska i atrakcje geoturystyczne, choć uwagę zwraca brak szerszego zaplecza edukacyjnego i interpretacyjnego. W artykule przedstawiono 15 reprezentatywnych skałek granitowych, podsumowano zagospodarowanie turystyczne obszaru oraz zaproponowano przebieg jednodniowej tematycznej trasy samochodowej.
Źródło:
Geotourism / Geoturystyka; 2015, 1-2; 19-36
1731-0830
Pojawia się w:
Geotourism / Geoturystyka
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The Rogowiec Landslide Complex (Central Sudetes, SW Poland) : a case of a collapsed mountain
Autorzy:
Kasprzak, M.
Duszyński, F.
Jancewicz, K.
Michniewicz, A.
Różycka, M.
Migoń, P.
Powiązania:
https://bibliotekanauki.pl/articles/2059941.pdf
Data publikacji:
2016
Wydawca:
Państwowy Instytut Geologiczny – Państwowy Instytut Badawczy
Tematy:
landslide
hillslopes
digital terrain model (DTM)
LiDAR
geomorphometry
electrical resistivity tomography
Opis:
The paper focuses on a large relict landslide complex in the northeastern part of the Kamienne Mts. (Sudetes, SW Poland) developed on Carboniferous and Permian volcanic and clastic sedimentary rocks. Whilst the presence of mass movements around Mt. Rogowiec has long been known, no attempts have yet been made to offer a comprehensive analysis. This study is based on recognition of geomorphic features from LiDAR-derived DTM, geomorphometric analysis, field geomorphological mapping, joint measurements at representative exposures, and electrical resistivity tomography. The total area affected by gravitational slope deformation exceeds 40 ha and consists of a few smaller units that show distinctive patterns of displacement. The eastern slopes of the Mt. Rogowiec ridge have been reshaped by large slides involving rigid blocks of trachyandesite in the upper part and deformed sedimentary successions in the middle and lower part. The central part of the area has experienced lateral spreading which resulted in complete disintegration of the volcanic cap. Fresh-looking ridge-top trenches indicate that this process is ongoing. Subsequent movements included flows into pre-existing valleys and rock wall collapses to produce spectacular block streams. The scale and variety of deformation structures at Mt. Rogowiec make this locality unique in the Sudetes.
Źródło:
Geological Quarterly; 2016, 60, 3; 695--713
1641-7291
Pojawia się w:
Geological Quarterly
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Level of Spatial Differentiation of Anthropogenic Impact in Małopolska
Autorzy:
Cegielska, K. M.
Salata, T.
Gawroński, K.
Różycka-Czas, R.
Powiązania:
https://bibliotekanauki.pl/articles/124299.pdf
Data publikacji:
2017
Wydawca:
Polskie Towarzystwo Inżynierii Ekologicznej
Tematy:
land use parameters
GIS computing
spatial data quality
BDOT10k Topographic Geodatabase
Opis:
Detailed spatial analysis of area coverage was performed in the present paper, which allowed to determine numerous derivative parameters connected with human activity as well as natural processes. Data from Database of Topographic Objects in nominal scale 1:10 000 (in short: BDOT10k) in GML format were used as source materials and processing of the source data to object-relational form of SpatialLite database was performed. Methods of areas classification and valorization on the basis of land coverage diversity were used in the research after using modification of classes selection to BDOT10k. Borders of spatial objects had geo-referential precision to 3 m and were not subjected to generalization process. It provided possibility to achieve high degree of credibility of calculated parameters. Materials that concern ecological corridors were obtained from the General Directorate for Environmental Protection by means of WFS service. Geoprocessing methods and spatial connections in GIS heterogenic systems were used to perform analyses. The effects of all the conducted analyses allowed to identify problem fields where areas of ecological corridors became strongly anthropogenized. The results were presented as multilayered compositions and cartograms. The research area covered 15,200 km2 and ranged the territory of Małopolska province.
Źródło:
Journal of Ecological Engineering; 2017, 18, 1; 200-209
2299-8993
Pojawia się w:
Journal of Ecological Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Impact of the oncological treatment on change in taste perception and dietary habits of children diagnosed with cancer – preliminary study
Autorzy:
Jaroch, A.
Różycka, K.
Kupczyk, K.
Kołtan, S.
Jakubczyk, M.
Powiązania:
https://bibliotekanauki.pl/articles/1918933.pdf
Data publikacji:
2020-06-10
Wydawca:
Uniwersytet Medyczny w Białymstoku
Tematy:
taste changes
pediatrics
nutritional status
oncological treatment
dietary habits
Opis:
Purpose: Chemotherapy, which is widely used in cancer treatment in children, may cause various side effects, including impaired taste perception, thus the main aim of the presented study was a subjective assessment of changes in taste perception and dietary habits among children undergoing oncological treatment. Materials and methods: In the present study, 41 hospitalized children were examined (mean age 11.0 ± 5.1 years). Anthropometric measurements were made, and diet was assessed using a food frequency questionnaire. Results: For 85.4% of the patients, the current treatment was chemotherapy. The average Body Mass Index value was 17.8 kg/m2 . 68.3% of children declared a change in taste preferences preferred tastes were spicy (39.3%) and sour (35.7%). Determination of the way of eating showed a significant reduction in the consumption of bread, milk and dairy products, poultry, meat, fish, potatoes, vegetables, and a particularly pronounced decrease in the frequency of sweets consumption. Conclusions: Oncological treatment changes the subjective taste perception of children in favor of intense flavors, and the process of oncological treatment, especially the use of chemotherapy, affects the way of eating
Źródło:
Progress in Health Sciences; 2020, 10(1); 61-68
2083-1617
Pojawia się w:
Progress in Health Sciences
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The analysis of Land Cover macrostructure in the suburban area of Krakow
Autorzy:
Cegielska, K.
Kudas, D.
Różycka-Czas, R.
Salata, T.
Szylar, M.
Powiązania:
https://bibliotekanauki.pl/articles/100651.pdf
Data publikacji:
2017
Wydawca:
Uniwersytet Rolniczy im. Hugona Kołłątaja w Krakowie
Tematy:
land cover
GIS
QGIS
Urban Atlas
buffer zone
strefa buforowa
Opis:
The suburban areas are lands under strong anthropogenic pressure which results in their significant transformation. Identifying the direction of changes and their intensity is the basis of research based on the analysis of land use and land cover. The study involved the analysis of land cover in the area of suburban zone of the city of Krakow based on the vector geodata available in the European Environment Agency database (Urban Atlas download service). Geographic data were classified according to various categories of coverage. The area was divided into evaluation clusters that included covering buffer zones with the given parameters according to the distance from the city: zones 0–5 km, 5–10 km, 10–15 km and 15–20 km. All analyzes were performed by means of the QGIS software using geoprocessing tools and additional ones of spatial statistics (among other things Group Stats). The percentage of each category of coverage in relation to the total area was made for each of the separate buffer zones’ statements. The theory of changing the structure of coverage categories along with diverging from the city according to the diagram of reducing participation of heavily anthropogenic areas to those less exposed to it was confirmed on the basis of this analysis.
Źródło:
Geomatics, Landmanagement and Landscape; 2017, 2; 47-60
2300-1496
Pojawia się w:
Geomatics, Landmanagement and Landscape
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Effect of selected pesticides and temperature on the order of liposome structure
Wplyw niektorych pestycydow i temperatury na budowe struktury liposomow
Autorzy:
Przestalski, S
Podolak, M
Lassmann, G
Rozycka-Roszak, B
Kuczera, J
Powiązania:
https://bibliotekanauki.pl/articles/807307.pdf
Data publikacji:
1992
Wydawca:
Szkoła Główna Gospodarstwa Wiejskiego w Warszawie. Wydawnictwo Szkoły Głównej Gospodarstwa Wiejskiego w Warszawie
Tematy:
temperatura
lecytyna
zoltko jaja
pestycydy
liposomy
struktura chemiczna
jaja kurze
Opis:
Studies were carried out on the effect of chloride of N-dodecyl-betaine 2-chloroethyl-ester (BE V-B), and chloride of betaine 2-chloroethyl-ester (BE V-B), added to liposomes formed of egg yolk lecithin, on the order parameter of a spin probe incorporated in the temperature range 2-50 °C. The BE’s used here modified ESR spectra to various degrees and lowered the order parameter of the spin probe. At temperatures lower than 20 °C compound V-B caused smaller changes in the order parameter than V-A, whereas above that temperature it caused greater changes. The ESR spectra of liposomes containing BE's exhibited splitting into two components that corresponded to different order parameter values. The molecular mechanism of interaction between the compounds studied and liposomes is disscused.
Przeprowadzono badania nad wpływem chlorku (N-dodecylo-betaina 2-chloroetyl-ester) (BE V-A) i chlorku (betaina 2-chloroetyl-ester) (BE V-B) dodanych do liposomów otrzymanych z lecytyny żółtka jaja kurzego, na parametr uporządkowania spinów sondy (BE) wprowadzonej w zakresie temperatur 2-20ºC. BE użyte tutaj jako sonda modyfikuje spektrum ESR w różnym stopniu i obniża parametr uporządkowania spinów sondy. W temperaturach niższych od 20ºC związek V-B powodował mniejsze zmiany w parametrze uporządkowania aniżeli związek V-A, chociaż dla temperatur wyższych od 20ºC powodował on zmiany większe. Spektrum ESR liposomów zawierających (BE) wykazały rozdzielenie na dwa składniki odpowiednio związane z różnymi parametrami uporządkowania spinów. W pracy przedstawiono molekularny mechanizm współzależności pomiędzy badanymi związkami a liposomami.
Źródło:
Zeszyty Problemowe Postępów Nauk Rolniczych; 1992, 398; 125-129
0084-5477
Pojawia się w:
Zeszyty Problemowe Postępów Nauk Rolniczych
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Degradation of nanoclay-filled polylactide composites
Autorzy:
Rapacz-Kmita, A.
Stodolak-Zych, E.
Dudek, M.
Szaraniec, B.
Rozycka, A.
Mosialek, M.
Mandecka-Kamien, L.
Powiązania:
https://bibliotekanauki.pl/articles/110832.pdf
Data publikacji:
2013
Wydawca:
Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej
Tematy:
nanocomposite materials
food packaging
polymer
smectite clay
Opis:
Nanoclay-filled polylactide (PLA 3051D) composite materials were tested in this study and their capacity for degradation was investigated. Activated and lyophilized smectite clay was used. The filler, its morphology, and grain size distribution were characterized by the use of transmission electron microscopy, scanning electron microscopy, and the dynamic light scattering technique. Samples of pure polylactide and polylactide filled with 3% wt., 5% wt., and 10% wt. of nanoclay in subsequent series were obtained by injection molding. The optimum amount of the filler in the nanocomposites was evalu-ated based on an assessment of mechanical properties as well as capacity to degrade. The 3% wt. mass fraction of nanofiller in the polylactide matrix was found to be the most effective in enhancement of both tensile strength (RM) and Young’s Modulus (E). It was also reported that polylactide nanocomposites filled with 3% wt. of smectite clay were characterized by the highest decrease in molecular mass of the matrix polymer after degradation tests (6 weeks incubation in water at 80°C). The observed decrease in degradation time and the overall changes distinguished in the nanocomposite structure suggest the poten-tial for application of the material in the packaging industry.
Źródło:
Physicochemical Problems of Mineral Processing; 2013, 49, 1; 91-99
1643-1049
2084-4735
Pojawia się w:
Physicochemical Problems of Mineral Processing
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Leg strength and power in Polish striker soccer players
Autorzy:
Buśko, K.
Górski, M.
Nikolaidis, P. T.
Mazur-Różycka, J.
Łach, P.
Staniak, Z.
Gajewski, J.
Powiązania:
https://bibliotekanauki.pl/articles/307478.pdf
Data publikacji:
2018
Wydawca:
Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej
Tematy:
izokinetyka
moment siły
moc
force sense
height of jump
isokinetic
peak torque
power
striker soccer players
Opis:
The main goal of the present study was to examine muscle strength and power of dominant and non-dominant leg, knee extensors and flexors, and their correlations with jumping performances in soccer players. A secondary aim was to evaluate muscle sense. Methods: 31 male professional strikers (age 20.9 ± 2.3 years, body mass 75.1 ± 6.6 kg, body height 179.5 ± 4.7 cm) participated in the study. The power output of lower extremities and the height of rise of the body mass centre during vertical jumps were measured using a force plate. The maximum muscle torque of the flexors and extensors of the knee were measured under isometric conditions using a special isometric torquemeter. Force sense was measured in isometric conditions in two tests: (a) fifty percent of the maximal voluntary contraction was set as a value of target force and the participants were instructed to reproduce the target force, (b) the participants attempted to develop a torque reproducing a sine course within the range of 10 to 50% of MVC performed. Results: A direct relationship was observed between the peak muscle torque in knee extensors developed during isokinetic contraction at all velocities and power and height of three types of vertical jumps ( p < 0.05). No correlation was observed between jumping performance and muscle torque under isometric condition. No differences were found in strength and jumping abilities as well as in force sense between dominant and non-dominant legs. Conclusions: This study offered a comprehensive and complete evaluation of leg muscle strength, sense and power, with the use of using force plate and isokinetic dynamometry.
Źródło:
Acta of Bioengineering and Biomechanics; 2018, 20, 2; 109-116
1509-409X
2450-6303
Pojawia się w:
Acta of Bioengineering and Biomechanics
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Measuring the force of punches and kicks among combat sport athletes using a modified punching bag with an embedded accelerometer
Autorzy:
Buśko, K.
Staniak, Z.
Szark-Eckardt, M.
Nikolaidis, P. T.
Mazur-Różycka, J.
Łach, P.
Michalski, R.
Gajewski, J.
Górski, M.
Powiązania:
https://bibliotekanauki.pl/articles/306941.pdf
Data publikacji:
2016
Wydawca:
Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej
Tematy:
symulator
sport
boks
siła
taekwondo
accelerometric boxing training simulators
boxing
force
kick
punch
Opis:
The main aim of the study was to design a new system to measure punching and kicking forces as well as reaction times in combat sport athletes. In addition, the study examined whether there were any intergender differences in the force of punches thrown by boxers and kicking forces delivered by taekwondo athletes. Boxers (male, n = 13; female, n = 7) were examined for the force of single straight punches and taekwondo athletes (male, n = 14; female, n = 14) for force of single Apdolio and Dwit Chagi kicks. The punching bag was equipped with acceleration transducers and gyroscopes embedded in a cylinder covered with a layer to absorb shock as well as a set of colour signal diodes. Value of the punching bag’s acceleration was used for calculating: strike force; the punching location on the bag; and time of a strike. The relative error of force calculation was 3%; the relative error in acceleration measurement was less than 1%. The force of a straight rear-hand punch was greater than the force of a lead-hand punch among male and female boxers. The force of Apdolio kick delivered with a rear leg was greater compared to a lead leg among female and male taekwondo athletes. Significant gender differences were noticed in the force in both types of kicks. In boxers, intergender differences were reported only for the force of a punch thrown with the rear hand. Based on these findings, it was concluded that the modified punching bag is a good diagnostic tool for combat sports.
Źródło:
Acta of Bioengineering and Biomechanics; 2016, 18, 1; 47-54
1509-409X
2450-6303
Pojawia się w:
Acta of Bioengineering and Biomechanics
Dostawca treści:
Biblioteka Nauki
Artykuł
    Wyświetlanie 1-11 z 11

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