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Tytuł:
Pigment composition in relation to phytoplankton community structure and nutrient content in the Baltic Sea
Autorzy:
Ston, J.
Kosakowska, A.
Lotocka, M.
Lysiak-Pastuszak, E.
Powiązania:
https://bibliotekanauki.pl/articles/47672.pdf
Data publikacji:
2002
Wydawca:
Polska Akademia Nauk. Instytut Oceanologii PAN
Tematy:
biomass
pigment
nutrient
temperature
salinity
Baltic Sea
carotenoid
phytoplankton
chlorophyll
Opis:
The concentration of chlorophylls and carotenoids with respect to communities of characteristic phytoplankton species and hydrological parameters, such as temperature, salinity and nutrients were analysed. Samples from the southern Baltic were taken during three periods: spring 1999, autumn 1999 and 2000 during cruises of r/v ‘Oceania’ in this area. The seasonal differences between the phytoplankton species composition and pigmentation of samples (measured by HPLC) were noted. The total biomass of the spring phytoplankton population was 11–15 times greater than that of the autumn populations. However, the phytoplankton community was more diverse in the two autumns, whereas the spring population was almost mono-taxonomic: >80% of the total biomass consisted of dinophytes. The total content of chlorophylls (a, b, c1 + c2) was about 20 times higher in spring. Moreover, in spring the concentrations of photosynthetic carotenoids (with dominant perdinin) were 2–4 times higher than those of the photoprotecting carotenoids (with dominant diadinoxanthin), whereas in the two autumns the situation was reversed: PPC concentrations (with dominant zeaxanthin and diadinoxanthin) exceeded those of PSC (with dominant fucoxanthin) by c. 3–10 times. Pigment markers have proved to be extremely useful biomarkers for elucidating the composition of phytoplankton populations in natural samples.
Źródło:
Oceanologia; 2002, 44, 4
0078-3234
Pojawia się w:
Oceanologia
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Accelerometer profile of motion of the pelvic girdle in butterfly swimming
Autorzy:
Staniak, Z.
Buśko, K.
Górski, M.
Pastuszak, A.
Powiązania:
https://bibliotekanauki.pl/articles/306410.pdf
Data publikacji:
2018
Wydawca:
Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej
Tematy:
pływanie
przyspieszenie
prędkość
swimming
butterfly swimming
acceleration
velocity
profile of pelvic girdle motion
Opis:
Purpose: The aim of the study was to develop a method to measure and analyse kinematics of movement of the pelvic girdle in butterfly swimming in order to support training of technical skills. Methods: A device for recording triaxial accelerations and triaxial rotational angular velocities was mounted on the dorsal part of the pelvic girdle of athlete. The measurements were performed in ten elite butterfly swimmers (age: 23.1 ± 3.7 years, body height: 187.6 ± 4.3 cm, body mass 83.4 ± 6.33 kg). The task of the athlete was to swim one length of short course pool at maximal intensity. Individual mean graphical and numerical profiles of the kinematics of the movement of the pelvic girdle was computed, within the average cycle based on five consecutive cycles. Results: Statistical analysis of numerical individual parameters of profiles of the athletes studied revealed statistically significant differences between the swimmers. Statistically significant correlations were also found between personal best times in 50 m swimming (r = –0.76, p < 0.05) and 100 m swimming (r = –0.76, p < 0.05) and duration of the part of the cycle connected with the decline in velocity from maximum translational motion velocity obtained during propulsion with the upper and lower limbs to minimum value of the velocity obtained before the beginning of propulsion only with the lower limbs. Conclusion: The proposed measurement method, presentation and analysis of the profile of the pelvic girdle motion in butterfly swimming represents a good tool for fast and effective qualitative and quantitative biomechanical evaluation of movement technique components.
Źródło:
Acta of Bioengineering and Biomechanics; 2018, 20, 1; 159-167
1509-409X
2450-6303
Pojawia się w:
Acta of Bioengineering and Biomechanics
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Hydrogen Production in Institute of Fluid Machinery of Polish Academy of Science in Gdańsk — theory and practice
Autorzy:
Sołowski, G.
Czylkowski, D.
Hrycak, B.
Siuzdak, K.
Pastuszak, K.
Cenian, A.
Powiązania:
https://bibliotekanauki.pl/articles/1190155.pdf
Data publikacji:
2019
Wydawca:
Gdańska Szkoła Wyższa
Tematy:
hydrogen
dark fermentation
plasmolysis
photochemical water oxidation
Opis:
The hydrogen production technologies developed in the Institute of Fluid-Flow Machinery, Polish Academy of Sciences in Gdańsk are discussed here. They include the following methods: dark fermentation, photoelectrochemical water oxidation and hydrocarbons (or alcohols) reforming by microwave plasma. The potential of hydrogen production by using dark fermentation of different popular wastes such as: agricultural wastes, textile or wood waste, was determined using suitable models. Also, the influence of microaeration during dark fermentation of some substrates, e.g. sour cabbage, was tested. Photochemical oxidation is a water-splitting process driven by radiation at the surface of a titanium-oxide anode. The Si microrods covered by titania films were verified as a photoanode material. The hydrogen production from methane, ethanol, isopropanol and kerosene was driven by a microwave plasma. The results obtained confirm that microwave plasma sources have a high potential for hydrogen production via gaseous and liquid fuels reforming.
Źródło:
Eco-Energetics: technologies, environment, law and economy; 2019, 2; 135--144
2657-5922
2657-7674
Pojawia się w:
Eco-Energetics: technologies, environment, law and economy
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Architecture Design of The Hardware H.264/AVC Video Decoder
Autorzy:
Roszkowski, M.
Abramowski, A.
Wieczorek, M.
Pastuszak, G.
Powiązania:
https://bibliotekanauki.pl/articles/226831.pdf
Data publikacji:
2010
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
H.264/AVC
video compression
FPGA
architecture design
Opis:
The need for real-time video compression systems requires a particular design methodology to achieve high troughput devices. The paper describes the architecture of the H.264/AVC decoder able to support SDTV and HDTV resolutions. The design applies many optimization techniques to reduce the resource consumption and maximize the throughput. The archietcture is verified with the software reference model JM16 and synhesized for FPGA technology. The maximal working frequency is 100 MHz for Stratix II devices.
Źródło:
International Journal of Electronics and Telecommunications; 2010, 56, 3; 291-300
2300-1933
Pojawia się w:
International Journal of Electronics and Telecommunications
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Sacral insufficiency fracture following rectal cancer treatment – case report
Autorzy:
Pikula, A.
Pikula, T.S.
Pastuszak, M.
Powiązania:
https://bibliotekanauki.pl/articles/2098211.pdf
Data publikacji:
2020
Wydawca:
Instytut Medycyny Wsi
Tematy:
sacral fracture
rectal cancer
treatment
carcinoembryonic antigen
magnetic resonance imaging
radiotherapy
Opis:
Introduction and Objective. Locally advanced rectal cancers witha high risk of recurrence need multimodal treatment Rusing neoadiuvant preoperative chemoradiotherapy or preoperative radiotherapy. Both rectal cancer surgery and the additional chemoradiotherapy or radiotherapy may cause late sequelae. The aim of the study is to present a clinical situation in which a pelvic recurrence of rectal cancer has to be distinguished from therapy side effects. Insufficiency fracture (IF) is one of the therapy side-effects. It can cause pain and decrease mobility and it is a well-known late complication to pelvic radiotherapy, but can be misinterpreted as a local recurrence. Conclusions. It is extremely important to distinguish IF from metastases, which may require biopsies and initiation of potentially toxic treatments such as chemotherapy. MRI and CT scans are complementary modalities to make an accurate diagnosis of IF.
Źródło:
Journal of Pre-Clinical and Clinical Research; 2020, 14, 4; 120-122
1898-2395
Pojawia się w:
Journal of Pre-Clinical and Clinical Research
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Identyfikacja defektów w cylindrycznych laminatach szklanych przy wykorzystaniu aktywnej termografii
Defect identification in GFRP cylindrical panels by active thermography
Autorzy:
Pastuszak, P. D.
Chwał, M.
Muc, A.
Bieniaś, J.
Powiązania:
https://bibliotekanauki.pl/articles/278239.pdf
Data publikacji:
2014
Wydawca:
Sieć Badawcza Łukasiewicz - Instytut Inżynierii Materiałów Polimerowych i Barwników
Tematy:
laminat szklany
laminat cylindryczny
folia teflonowa
defekt
termografia aktywna
glass laminate
cylindrical laminate
teflon foil
defect
active thermography
Opis:
W prezentowanej pracy przedstawiono identyfikację podpowierzchniowych defektów w cylindrycznych laminatach szklanych z wykorzystaniem termografii w podczerwieni. Analizie poddano jednokierunkowe laminaty o dwóch konfiguracjach: 0° (S0) oraz 90° (S90), w których pomiędzy warstwy laminatu wprowadzono sztuczny podpowierzchniowy defekt w formie teflonowej folii. Analizę termograficzną prowadzono bazując na technice impulsowej, a rezultaty zaprezentowano w formie termogramów i profili temperaturowych. Wyniki analizy potwierdziły przydatność impulsowej aktywnej termografii w badaniu cylindrycznych struktur kompozytowych. Dodatkowo podkreślono problem jednorodnego nagrzewania powierzchni zakrzywionych.
The presented paper is dedicated to infrared thermographic identification of subsurface defects in cylindrical panels made of glass lamina. The analyzed samples were made as unidirectional lamina in the case of two base configurations: 0° (S0) and 90° (S90) in which the artificial subsurface defect was in the form of Teflon foil introduced between the layers in the structure. The thermography study based on the pulse technique was conducted and the results were presented in the form of thermograms and temperature profiles. The effects of the analysis confirmed the usefulness of the pulsed active thermography method related to cylindrical composite structures. Additionally, the problem with the uniform heating of the curved surfaces was depicted.
Źródło:
Przetwórstwo Tworzyw; 2014, [R.] 20, nr 1 (157), 1 (157); 68-75
1429-0472
Pojawia się w:
Przetwórstwo Tworzyw
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
ONE HUNDRED YEARS OF FISHERIES RESEARCH BY NMFRI FIFTY YEARS OF COOPERATION BETWEEN POLAND AND THE U.S.
Autorzy:
Pastuszak, Marianna
Tans, Pieter
Karnicki, Zbigniew
Hare, Jonathan A.
Janusz, Jerzy
Kuzebski, Emil
Powiązania:
https://bibliotekanauki.pl/chapters/2129753.pdf
Data publikacji:
2021
Wydawca:
Morski Instytut Rybacki - Państwowy Instytut Badawczy
Źródło:
Longstanding Polish-American research Oceans and atmosphere; 17-48
9788361650317
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The Development of Rapidly Solidified Magnesium – Copper Ribbons
Autorzy:
Pastuszak, M.
Cieślak, G.
Dobkowska, A.
Mizera, J.
Kurzydłowski, K. J.
Powiązania:
https://bibliotekanauki.pl/articles/958209.pdf
Data publikacji:
2016
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
magnesium-based alloys
rapid solidification
microstructure
mechanical properties
corrosion properties
Opis:
The aim of the present work was to plan and carry out an experiment consisting of amorphization of industrial magnesium alloy WE 43 (Mg - 4 Y - 3 RE - 0.5 Zr) modified by the copper addition. Investigated alloy modified with 20% of copper was rapidly quenched with the use of melt spinning technique. The effects of cooling rate on the structure and properties of the obtained material were extensively analyzed. The structure and phase analysis of samples were examined using X-ray diffraction method (XRD) while the thermal stability of the samples was determined by differential scanning calorimetry (DSC). Microstructure observations were also conducted. The microhardness tests (HV0.02) and corrosion resistance tests were carried out to investigate the properties of the material. Corrosion resistance measurements were held using a typical three-electrode system. As the result of the research, the effect of cooling rate on microstructure and properties of investigated alloy was determined.
Źródło:
Archives of Metallurgy and Materials; 2016, 61, 2B; 1083-1088
1733-3490
Pojawia się w:
Archives of Metallurgy and Materials
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
A study of episodic events in the Baltic Sea – combined in situ and satellite observations
Autorzy:
Lysiak-Pastuszak, E.
Bartoszewicz, M.
Bradtke, K.
Darecki, M.
Drgas, N.
Kowalczuk, P.
Krasniewski, W.
Krezel, A.
Krzyminski, W.
Lewandowski, L.
Mazur-Marzec, H.
Piliczewski, B.
Sagan, S.
Sutryk, K.
Witek, B.
Powiązania:
https://bibliotekanauki.pl/articles/48563.pdf
Data publikacji:
2012
Wydawca:
Polska Akademia Nauk. Instytut Oceanologii PAN
Tematy:
Baltic Sea
Ferry Box project
algal bloom
hepatotoxin
satellite image
coastal water
oceanic water
salinity
temperature
Opis:
A project was developed concerning the operational system of surveillance and the recording of episodic events in the Baltic Sea. In situ information was to be combined with multi-sensory satellite imagery to determine the extent of algal blooms, to track their evolution and that of rapid environmental events like hydrological fronts. The main element of the system was an autonomous Ferry Box module on a ferry operating between Gdynia and Karlskrona, automatically measuring temperature, salinity and chlorophyll a fluorescence. At pre-selected locations, discrete water samples were collected, which were subsequently analysed for their phytoplankton content, and algal hepato- and neurotoxins; they were also used in toxicity tests with Artemia franciscana.
Źródło:
Oceanologia; 2012, 54, 2
0078-3234
Pojawia się w:
Oceanologia
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Preliminary assessment of the eutrophication status of selected areas in the Polish sector of the Baltic Sea according to the EU Water Framework Directive
Autorzy:
Lysiak-Pastuszak, E.
Osowiecki, A.
Filipiak, M.
Olszewska, A.
Sapota, G.
Woron, J.
Krzyminski, W.
Powiązania:
https://bibliotekanauki.pl/articles/48320.pdf
Data publikacji:
2006
Wydawca:
Polska Akademia Nauk. Instytut Oceanologii PAN
Tematy:
ecological quality status
European Union
Water Framework Directive
implementation
Baltic Sea
ecosystem
eutrophication
Opis:
The implementation of the European Union Water Framework Directive required a number of tasks to be fulfilled: classifying the various water bodies into different types, defining reference conditions for each of the types and assessing their ecological quality status – this last is based on biological, hydromorphological and physicochemical quality elements of the ecosystem. The paper presents an attempt to estimate reference values in selected areas of Polish coastal and transitional waters as well as in an open sea area following WFD principles. The preliminary eutrophication assessment showed all the assessed areas to be eutrophication problem areas.
Źródło:
Oceanologia; 2006, 48, 2
0078-3234
Pojawia się w:
Oceanologia
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Metody zwiększenia efektywności transportu towarowego w obrębie aglomeracji szczecińskiej
Methods for increasing the efficiency of freight transport in Szczecin area
Autorzy:
Kujawski, A.
Pastuszak, K.
Kacprzak, K.
Franos, M.
Powiązania:
https://bibliotekanauki.pl/articles/309888.pdf
Data publikacji:
2017
Wydawca:
Instytut Naukowo-Wydawniczy "SPATIUM"
Tematy:
aglomeracja szczecińska
transport drogowy
transport kolejowy
koszty transportu
efektywność transportu
Szczecin agglomeration
road transport
railway transport
transportation costs
transport efficiency
Opis:
W artykule omówione zostały problemy transportowe w obrębie aglomeracji szczecińskiej. Dokonano analizy stanu istniejącego oraz zaproponowano rozwiązania problemów transportu towarowego na przykładzie istniejącej sieci logistycznej. Proponowana metoda polega na odciążeniu transportu drogowego przy wykorzystaniu istniejącej infrastruktury transportu kolejowego, a także przeanalizowanie jaki będzie to miało wpływ na koszty bezpośrednie oraz koszty zewnętrzne dla tych dwóch gałęzi transportu. W analizie wykorzystano metodę najkrótszej ścieżki do rozwiązania problemu komiwojażera. Metoda ta rozwiązuje graf hamiltonowski w poszukiwaniu minimalnej odległości pomiędzy wszystkimi badanymi punktami i wyznacza najkrótszą ścieżkę pomiędzy nimi.
The article presents transport problems within the Szczecin area and analysis of the existing situation. The main goal is to propose solutions of the freight transport using the existing logistics network. The aim is to relieve part of road transport and move it to the rail using existing infrastructure. Results will be used to examine the impact on external costs. The analysis uses the method of shortest path to solve the traveling salesman problem. This method resolves the Hamiltonian graph to search of the minimum distance between all test points and determines the shortest path between them.
Źródło:
Autobusy : technika, eksploatacja, systemy transportowe; 2017, 18, 9; 139-144
1509-5878
2450-7725
Pojawia się w:
Autobusy : technika, eksploatacja, systemy transportowe
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
POLISH-AMERICAN COOPERATION IN FISHERIES ECOLOGY - PLANKTON SORTING AND IDENTIFICATION CENTER.
Autorzy:
Kaźmierczak, Paweł
Hare, Jonathan A.
Kalandyk, Wanda
Pastuszak, Marianna
Kuzebski, Emil
Powiązania:
https://bibliotekanauki.pl/chapters/2129737.pdf
Data publikacji:
2021
Wydawca:
Morski Instytut Rybacki - Państwowy Instytut Badawczy
Źródło:
Longstanding Polish-American research Oceans and atmosphere; 51-73
9788361650317
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Somatotype : variables related to muscle torque and power output in female volleyball players
Autorzy:
Buśko, K.
Lewandowska, J.
Lipińska, M.
Michalski, R.
Pastuszak, A.
Powiązania:
https://bibliotekanauki.pl/articles/307269.pdf
Data publikacji:
2013
Wydawca:
Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej
Tematy:
female
volleyball players
somatotype
strength
power
jump
wytrzymałość
energia
skok
Opis:
The purpose of this study was to investigate the relationship between somatotype, muscle torque, maximal power output and height of rise of the body mass centre measured in akimbo counter movement jump (ACMJ), counter movement jump (CMJ) and spike jump (SPJ), and power output measured in maximal cycle ergometer exercise bouts in female volleyball players. Fourteen players participated in the study. Somatotype was determined using the Heath–Carter method. Maximal muscle torque was measured under static conditions. Power output was measured in 5 maximal cycle ergometer exercise bouts, 10 s each, at increasing external loads equal to 2.5, 5.0, 7.5, 10.0 and 12.5% of body weight (BW). All jump trials (ACMJ, SPJ and CMJ) were performed on a force plate. The mean somatotype of volleyball players was: 4.9-3.5-2.5. The value of the sum of muscle torque of the left upper extremities was significantly correlated only with mesomorphic component. Mesomorphic and ectomorphic components correlated significantly with values of maximal power measured during ACMJ and CMJ. Power output measured in maximal cycle ergometer exercise bouts at increasing external loads equal to 2.5, 5.0 and 7.5% of BW was significantly correlated with endomorphy, mesomorphy and ectomorphy.
Źródło:
Acta of Bioengineering and Biomechanics; 2013, 15, 2; 119-126
1509-409X
2450-6303
Pojawia się w:
Acta of Bioengineering and Biomechanics
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Somatotype variables related to strength and power output in male basketball players
Autorzy:
Buśko, K.
Pastuszak, A.
Lipińska, M.
Gryko, K.
Powiązania:
https://bibliotekanauki.pl/articles/306234.pdf
Data publikacji:
2017
Wydawca:
Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej
Tematy:
mężczyzna
koszykówka
somatotyp
siła
skok
male
basketball
Somatotype
strength
power
vertical jump
Opis:
The purpose of this study was to investigate the relationship between somatotype, muscular strength, power output measured in maximal cycle ergometer exercise bouts, and maximal power output and height of rise of the body mass centre (jump height) measured in akimbo counter movement jump (ACMJ), counter movement jump (CMJ) and spike jump (SPJ), in male basketball players. Methods: Thirteen male basketball players (second division, age 19.4±0.8 years, body height 192.9±5.6 cm, body mass 88.8±8.6 kg, training experience 9.3±0.8 years) participated in the study. Somatotype was determined using the Heath-Carter method. Maximal joint torques were measured under static conditions. Power output was measured in 2 maximal cycle ergometer exercise bouts, 10 s each, with increasing external loads equal to 7.5 and 10.0% of the body weight (BW). All jump trials (ACMJ, CMJ and SPJ) were performed on a force plate. Results: The mean somatotype of basketball players amounted to: 2.8-4.2-3.2. Sum of the joint torques for left and right lower extremities (0.613), trunk (0.631) and all six measured muscle groups (0.647) were significantly correlated (p<0.05) with mesomorphy and ectomorphy. Conclusion: It can be assumed that basketball players’ anthropometric characteristics can influence their level of performance but it is not a decisive factor.
Źródło:
Acta of Bioengineering and Biomechanics; 2017, 19, 2; 161-167
1509-409X
2450-6303
Pojawia się w:
Acta of Bioengineering and Biomechanics
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
3D scanning inspection of the composite structures
Autorzy:
Bondyra, A.
Pastuszak, P.
Powiązania:
https://bibliotekanauki.pl/articles/248014.pdf
Data publikacji:
2014
Wydawca:
Instytut Techniczny Wojsk Lotniczych
Tematy:
non-destructive inspection
3D scanning
composites
vacuum bag technology
autoclave technology
Opis:
Wide range of different visual measurement techniques, which are used nowadays, shows the need of the development of geometry description possibilities. New applications of advanced materials require measurement methods, which can be used in the areas of reverse engineering, FEA modelling validation, rapid prototyping and analysis of structure deformations. Light and laser-based techniques such as photogrammetry, laser triangulation, Moire and optical coherence tomography allow for analysing geometry of the specimens. Widely used optical methods take into account the global and local coordinate translation, sensitivity, resolution, and measurement uncertainty. They are used in the respect to research trends such as direct shape measurement from surfaces, system calibration and optimization methods. In this paper, composite specimens’ geometries with artificial delamination inside and structures without delamination are analysed. Rectangular, curved and cylindrical shapes are investigated by 3D scanning technique. The measured composite structures are manufactured with autoclave and vacuum bag methods. Results presented in this paper, shows geometries different between composites manufactured by using these methods. Inspection process was executed in two steps. First, virtual models of the composite specimens are used to determine main geometry dimensions. Second, their curvatures and GD&T are determined. Additional, the thickness change connected with delamination is revealed. Used method gives an opportunity of observing specimens curving radius and manufacturing defects. Presented results shows that use of additional aluminum plate in vacuum bag method allowed to get specimens with high level of flatness and parallelism in the case of rectangular structures and cylindricity in case of the curved shells. Presented methodology of the inspection is simply, give multidimensional results and its application are not limited to laboratory conditions.
Źródło:
Journal of KONES; 2014, 21, 1; 31-36
1231-4005
2354-0133
Pojawia się w:
Journal of KONES
Dostawca treści:
Biblioteka Nauki
Artykuł
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