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Tytuł:
A nonlinear model of a turbine blade by asymptotic analysis
Autorzy:
Rodriguez, J. M.
Powiązania:
https://bibliotekanauki.pl/articles/907896.pdf
Data publikacji:
2002
Wydawca:
Uniwersytet Zielonogórski. Oficyna Wydawnicza
Tematy:
matematyka
asymptotic analysis
nonlinear elasticity
junctions
shallow shells
multistructures
Opis:
In this paper we obtain a limit model for a turbine blade fixed to a 3D solid. This model is a three-dimensional linear elasticity problem in the 3D part of the piece (the rotor) and a two-dimensional problem (the nonlinear shallow shell equations) in the 2D part (the turbine blade), with junction conditions in the part of the turbine blade fixed to the rotor. To obtain this model, we perform an asymptotic analysis, starting with the nonlinear three-dimensional elasticity equations on all the pieces and taking as a small parameter the thickness of the blade.
Źródło:
International Journal of Applied Mathematics and Computer Science; 2002, 12, 1; 101-113
1641-876X
2083-8492
Pojawia się w:
International Journal of Applied Mathematics and Computer Science
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
An algebraic derivative associated to the operator $D^δ$
Autorzy:
Almeida, V.
Castro, N.
Rodríguez, J.
Powiązania:
https://bibliotekanauki.pl/articles/1207615.pdf
Data publikacji:
2000
Wydawca:
Polska Akademia Nauk. Instytut Matematyczny PAN
Opis:
In this paper we get an algebraic derivative relative to the convolution $(f*g)(t)=∫_0^ti f(t-ψ)g(ψ)dψ$ associated to the operator $D^δ$, which is used, together with the corresponding operational calculus, to solve an integral-differential equation. Moreover we show a certain convolution property for the solution of that equation
Źródło:
Banach Center Publications; 2000, 53, 1; 71-78
0137-6934
Pojawia się w:
Banach Center Publications
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Bio-methanization of organic fraction from municipal solid waste: temperature effects
Autorzy:
Fernández-Rodríguez, J.
Pérez, M.
Romero, L. I.
Powiązania:
https://bibliotekanauki.pl/articles/779264.pdf
Data publikacji:
2013
Wydawca:
Zachodniopomorski Uniwersytet Technologiczny w Szczecinie. Wydawnictwo Uczelniane ZUT w Szczecinie
Tematy:
anaerobic digestion
OFMSW
mesophilic
thermophilic
methane
Opis:
The main objective of this study was to analyse the development of dry anaerobic digestion process of OFMSW in batch reactors under two temperature ranges, thermophilic (55°C) and mesophilic (35°C). The experimental results lead to the conclusion that the thermophilic range has a greater rate of hydrolysis and is therefore more effective to degrade wastes, shortening the overall operating time. For example, the hydrolytic step in the thermophilic (T) process lasted an average of 8 days versus 14 days in the mesophilic (M) range. The methanogenic phase lasted for 18 and 29 days in the T and M processes, respectively. The mesophilic range showed higher removal of the organic effluent but with greater uptime requirements. Moreover, the thermophilic range showed greater productivities than the mesophilic range, and the productivities were approximately doubled in terms of the produced biogas from a given amount of consumed organic matter.
Źródło:
Polish Journal of Chemical Technology; 2013, 15, 2; 99-106
1509-8117
1899-4741
Pojawia się w:
Polish Journal of Chemical Technology
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Numerical model of so2 scrubbing with seawater applied to marine engines
Autorzy:
Lamas, M. I.
Rodríguez, C. G.
Rodríguez, J. D.
Telmo, J.
Powiązania:
https://bibliotekanauki.pl/articles/258856.pdf
Data publikacji:
2016
Wydawca:
Politechnika Gdańska. Wydział Inżynierii Mechanicznej i Okrętownictwa
Tematy:
sulphur dioxide
SO2
scrubbers
CFD
Opis:
The present paper proposes a CFD model to study sulphur dioxide (SO2) absorption in seawater. The focus is on the treatment of marine diesel engine exhaust gas. Both seawater and distilled water were compared to analyze the effect of seawater alkalinity. The results indicate that seawater is more appropriate than distilled water due to its alkalinity, obtaining almost 100% cleaning efficiency for the conditions analyzed. This SO2 reduction meets the limits of SOx emission control areas (SECA) when operating on heavy fuel oil. These numerical simulations were satisfactory validated with experimental tests. Such data are essential in designing seawater scrubbers and judging the operating cost of seawater scrubbing compared to alternative fuels.
Źródło:
Polish Maritime Research; 2016, 2; 42-47
1233-2585
Pojawia się w:
Polish Maritime Research
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Analysis of the pre-injection system of a marine diesel engine through multiple-criteria decision-making and artificial neural networks
Autorzy:
Rodriguez, C. G.
Lamas, M. I.
Rodriguez, J. D.
Abbas, A.
Powiązania:
https://bibliotekanauki.pl/articles/2033205.pdf
Data publikacji:
2021
Wydawca:
Politechnika Gdańska. Wydział Inżynierii Mechanicznej i Okrętownictwa
Tematy:
marine engine
emissions
consumption
artificial neural networks
multi-criteria decision making
computational fluid dynamics
Opis:
The present work proposes several pre-injection patterns to reduce nitrogen oxides in the Wartsila 6L 46 marine engine. A numerical model was carried out to characterise the emissions and consumption of the engine. Several pre-injection quantities, durations, and starting instants were analysed. It was found that oxides of nitrogen can be noticeably reduced but at the expense of increasing consumption as well as other emissions such as carbon monoxide and hydrocarbons. According to this, a multiple-criteria decision-making (MCDM) model was established to select the most appropriate parameters. Besides, an artificial neural network (ANN) was developed to complement the results and analyse a huge quantity of alternatives. This hybrid MCDM-ANN methodology proposed in the present work constitutes a useful tool to design new marine engines.
Źródło:
Polish Maritime Research; 2021, 4; 88-96
1233-2585
Pojawia się w:
Polish Maritime Research
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Study of ancient forging devices: 3D modelling and analysis using current computer methods
Autorzy:
Rojas-Sola, J. I.
Bouza-Rodríguez, J. B.
Comesaña-Campos, A.
Powiązania:
https://bibliotekanauki.pl/articles/200411.pdf
Data publikacji:
2019
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
forging device
hydraulic trompe
3D modelling
computational fluid dynamics
finite element analysis
urządzenie do kucia
modelowanie 3D
analiza elementów skończonych
Opis:
An ancient forging device in Spain has been studied, namely the forge with a waterwheel and air-blowing tube or hydraulic trompe, found near the village of Santa Eulalia de Oscos (province of Asturias, Spain). Three procedures using ad hoc methods were applied: 3D modelling, finite element analysis (FEA), and computational-fluid dynamics (CFD). The CFD results indicated the proper functioning of the trompe, which is a peculiar device based on the Venturi effect to take in air. The maximum air volume flow rate supplied to the forge by the trompe was shown to be 0.091 m3/s, and certain parameters of relevance in the trompe design presented optimal values, i.e. offering maximum air-flow supply. Furthermore, the distribution of stress over the motion-transmission system revealed that the stress was concentrated most intensely in the cogs of the transmission shaft (a kind of camshaft), registering values of up to 7.50 MPa, although this value remained below half of the maximum admissible work stress. Therefore, it was confirmed that the oak wood from which the motion system and the trompe were made functioned properly, as these systems never exceeded the maximum admissible working stress, demonstrating the effectiveness of the materials used in that period.
Źródło:
Bulletin of the Polish Academy of Sciences. Technical Sciences; 2019, 67, 2; 377-390
0239-7528
Pojawia się w:
Bulletin of the Polish Academy of Sciences. Technical Sciences
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Numerical analysis of emissions from marine engines using alternative fuels
Autorzy:
Lamas, M. I.
Rodriguez, C. G.
Telmo, J.
Rodriguez, J. D.
Powiązania:
https://bibliotekanauki.pl/articles/260425.pdf
Data publikacji:
2015
Wydawca:
Politechnika Gdańska. Wydział Inżynierii Mechanicznej i Okrętownictwa
Tematy:
fuel
natural gas
hydrogen
marine engine
emissions
Opis:
The current restrictions on emissions from marine engines, particularly sulphur oxides (SOx ), nitrogen oxides (NOx ) and carbon dioxide (CO2 ), are compelling the shipping industry to a change of tendency. In the recent years, many primary and secondary reduction techniques have been proposed and employed in marine engines. Nevertheless, the increasingly restrictive legislation makes it very difficult to continue developing efficient reduction procedures at competitive prices. According to this, the paper presents the possibility to employ alternative fuels. A numerical model was developed to analyze the combustion process and emissions using oil fuel, natural gas and hydrogen. A commercial marine engine was studied, the Wartsila 6L 46. It was found, that hydrogen is the cleanest fuel regarding CO2 , hydrocarbons (HC) and carbon monoxide (CO). Nevertheless, it is very expensive for marine applications. Natural gas is cheaper and cleaner than fuel oil regarding CO2 and CO emissions. Still, natural gas emits more NOx and HC than oil fuel. SOx depends basically on the sulphur content of each particular fuel.
Źródło:
Polish Maritime Research; 2015, 4; 48-52
1233-2585
Pojawia się w:
Polish Maritime Research
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Three-dimensional cfd analysis to study the thrust and efficiency of a biologicallyinspired marine propulsor
Autorzy:
Lamas, M. I.
Rodríguez, J. D.
Rodríguez, C. G.
González, P. B.
Powiązania:
https://bibliotekanauki.pl/articles/259319.pdf
Data publikacji:
2011
Wydawca:
Politechnika Gdańska. Wydział Inżynierii Mechanicznej i Okrętownictwa
Tematy:
fish swimming
marine propulsion
undulating fin
biomimetic
computational fluid dynamics (CFD)
CFD
Opis:
Aquatic animals, which are the result of many millions of years of evolutionary optimization, are very quick, efficient, robust, and versatile. Accordingly, biologically-inspired mechanisms which emulate the movement of animals have recently become very popular. For the efficient design of a propulsion system it is very important to analyze the fluid flow in detail. CFD (Computational Fluid Dynamics) has become a powerful technique to understand the phenomena because it gives extensive information about the fluid flow characteristics. In the present work, a propulsion system consisting of an undulating fin which emulates the fish swimming was built. In order to optimize the mechanism, several undulating configurations were studied using a 3D turbulent CFD model. The thrust, drag, efficiency and hydrodynamic characteristics were analyzed. Furthermore, it was shown that the efficiency and thrust depend strongly on the oscillation frequency, amplitude and wavelength. In order to validate this CFD model, the numerically obtained thrust was successfully compared with experimental results from the laboratory mechanism.
Źródło:
Polish Maritime Research; 2011, 1; 10-16
1233-2585
Pojawia się w:
Polish Maritime Research
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Annual cycle of phytoplankton community through the water column: Study applied to the implementation of bivalve offshore aquaculture in the Southeastern Bay of Biscay
Autorzy:
Muniz, O.
Revilla, M.
Rodriguez, J.G.
Laza-Martinez, A.
Fontan, A.
Powiązania:
https://bibliotekanauki.pl/articles/47941.pdf
Data publikacji:
2019
Wydawca:
Polska Akademia Nauk. Instytut Oceanologii PAN
Tematy:
phytoplankton community
water column
open water
bivalve
biomass
chlorophyll a
nutrient
hydrographic condition
environmental variability
Biscay Bay
Źródło:
Oceanologia; 2019, 61, 1
0078-3234
Pojawia się w:
Oceanologia
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Performance analysis of an InAs/GaSb superlattice barrier photodetector covering the full LWIR spectral domain
Autorzy:
Alchaar, R.
Rodriguez, J.-B.
Höglund, L.
Naureen, S.
Costard, E.
Christol, P.
Powiązania:
https://bibliotekanauki.pl/articles/1818247.pdf
Data publikacji:
2020
Wydawca:
Polska Akademia Nauk. Stowarzyszenie Elektryków Polskich
Tematy:
barrier photodetector
InAs/GaSb type-2 superlattice
long wavelength infrared
performance analysis
Opis:
In this paper, we present the electrical and electro-optical characterizations of an InAs/GaSb type-2 superlattice barrier photodetector operating in the full longwave infrared spectral domain. The fabricated detectors exhibited a 50% cut-off wavelength around 14 μm at 80 K and a quantum efficiency slightly above 20%. The dark current density was of 4.6×10⁻² A/cm² at 80 K and a minority carrier lateral diffusion was evaluated through dark current measurements on different detector sizes. In addition, detector spectral response, its dark current-voltage characteristics and capacitance-voltage curve accompanied by electric field simulations were analyzed in order to determine the operating bias and the dark current regimes at different biases. Finally, dark current simulations were also performed to estimate a minority carrier lifetime by comparing experimental curves with simulated ones.
Źródło:
Opto-Electronics Review; 2020, 28, 3; 164--170
1230-3402
Pojawia się w:
Opto-Electronics Review
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Assessment of a sheltered euhaline area of the Southeastern Bay of Biscay to sustain bivalve production in terms of phytoplankton community composition
Autorzy:
Bilbao, J.
Muniz, O.
Rodriguez, J.G.
Revilla, M.
Laza-Matinez, A.
Seoane, S.
Powiązania:
https://bibliotekanauki.pl/articles/2078991.pdf
Data publikacji:
2021
Wydawca:
Polska Akademia Nauk. Instytut Oceanologii PAN
Tematy:
phytoplankton community
phytoplankton composition
biomass
physicochemical variation
aquaculture
mussel
Biscay Bay
Opis:
This study describes the phytoplankton community in sheltered euhaline waters of the Basque coast (southeastern Bay of Biscay). Phytoplankton composition, cell size, abundance, biomass and the presence of potentially toxic taxa, together with chlorophyll a, nutrients and hydrographic and optical conditions were measured, from August 2016 to August 2017, in the Mutriku port, with the main aim of assessing the suitability of the phytoplankton community as a food resource for bivalves. The water column in Mutriku showed the typical environmental conditions of Basque marine waters, with no significant nutrient enrichment caused by anthropogenic pressures. Haptophytes represented the greatest contribution to cell abundance (31—47%), and diatoms were the dominant group in terms of biomass (52—79%), which could favour mussel growth due to their high fatty acid content. In addition, the size structure of the phytoplankton community was suitable for mussel ingestion, since the predominant cell size was 2—20 μm. Regarding toxic phytoplankton, the genera that pose a risk for human health and those that affect negatively mussel physiology and survival were considered. Altogether, ten toxic phytoplankton taxa were identified, contributing in less than 5% to the total cell abundance of Mutriku. However, median chlorophyll a concentration was low (0.5 μg L−1), reflecting the oligotrophic conditions of the area. Therefore, even if the composition of the phytoplankton community could be favourable for bivalve aquaculture, biomass values are low compared to other zones of bivalve production.
Źródło:
Oceanologia; 2021, 63, 1; 12-26
0078-3234
Pojawia się w:
Oceanologia
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Inhomogeneity detection in phytoplankton time series using multivariate analyses
Autorzy:
Muniz, O.
Rodriguez, J.G.
Revilla, M.
Laza-Martinez, A.
Seoane, S.
Franco, J.
Powiązania:
https://bibliotekanauki.pl/articles/2079181.pdf
Data publikacji:
2020
Wydawca:
Polska Akademia Nauk. Instytut Oceanologii PAN
Tematy:
phytoplankton community
monitoring programme
uncertainty
multivariate analysis
inhomogeneity
Opis:
Phytoplankton communities have long been used as water quality indicators within environmental policies. This has fostered the development of national and international phytoplankton monitoring programs, but these networks are subject to sources of uncertainty due to laboratory issues. Nevertheless, studies regarding the interference associated with these aspects are not well-documented. Hence, a long time series (2003–2015) from the Basque continental shelf (southeastern Bay of Biscay) was analyzed to evaluate the uncertainty given by laboratory strategies when studying phytoplankton variability. Variability in phytoplankton communities was explained not only by environmental conditions but also by changes in fixatives (glutaraldehyde and acidic Lugol's solution) and laboratory staff. Based on Bray-Curtis distances, phytoplankton assemblages were found to be significantly dissimilar according to the effect of changes in the specialist handling the sample and the employed fixative. The pair-wise permutational multivariate analysis of variance (PERMANOVA) showed significant differences between the two fixatives utilized and also between the three taxonomists involved. Thus, laboratory-related effects should be considered in the study of phytoplankton time series.
Źródło:
Oceanologia; 2020, 62, 3; 243-254
0078-3234
Pojawia się w:
Oceanologia
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Eocene and not Cretaceous origin of spider wasps: fossil evidence from amber
Autorzy:
Rodriguez, J.
Waichert, C.
Von Dohlen, C.D.
Poinar,Jr., G.
Pitts, J.P.
Powiązania:
https://bibliotekanauki.pl/articles/20131.pdf
Data publikacji:
2016
Wydawca:
Polska Akademia Nauk. Instytut Paleobiologii PAN
Tematy:
Eocene
Cretaceous
spider wasp
pompilid wasp zob.spider wasp
fossil evidence
amber
Hymenoptera
Pompilidae
Opis:
Spider wasps had long been proposed to originate in the Late Cretaceous based on the Burmese amber fossil Bryopompilus interfector. We performed a morphological examination of this fossil and determined that it does not belong to Pompilidae or any other described hymenopteran family. Instead, we place it in the new family Bryopompilidae. The oldest verifiable member of the Pompilidae is from Baltic amber, which suggests that the crown group of the family probably originated in the Eocene, not in the Late Cretaceous as previously proposed. The origin of spider wasps appears to be correlated with an increase in spider familial diversity in the Cenozoic. We also add two genera to the extinct pompilid fauna: Tainopompilus Rodriguez and Pitts gen. nov. and Paleogenia Waichert and Pitts gen. nov., and describe three new species of fossil spider wasps: Anoplius planeta Rodriguez and Pitts sp. nov., from Dominican amber (Burdigalian to Langhian); Paleogenia wahisi Waichert and Pitts sp. nov., from Baltic amber (Lutetian to Priabonian); and Tainopompilus argentum Rodriguez and Pitts sp. nov., from Dominican amber (Chattian to Langhian).
Źródło:
Acta Palaeontologica Polonica; 2016, 61, 1
0567-7920
Pojawia się w:
Acta Palaeontologica Polonica
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Kelvin-Helmholtz instabilities in the Colorado River Delta, Gulf of California
Autorzy:
Carbajal, N.
Vargas, J.T.
Rodriguez, J.H.G.
Montano Ley, Y.
Salas de Leon, D.A.
Powiązania:
https://bibliotekanauki.pl/articles/2078904.pdf
Data publikacji:
2021
Wydawca:
Polska Akademia Nauk. Instytut Oceanologii PAN
Tematy:
Kelvin-Helmholtz instability
Colorado River Delta
tidal current
bottom sediment
bathymetry
suspended sediment
satellite image
Opis:
In the Colorado River Delta, the interaction of tidal currents and sea-bottom sediment formed, in geological times, large-scale seabed patterns known as sandbanks. These patterns are oriented along the delta, almost parallel to the dominant tidal flow, with the bathymetry having an undulating character across the delta. Calculations and analysis showed that the interaction of tidal currents with the bathymetry causes velocity shears, faster flowing over the ridges than in the troughs. Kelvin-Helmholtz instabilities emerge from the velocity shear, and a large amount of suspended sediment makes the instabilities visible in satellite images. The physical and dynamic conditions allowed us to find an explanation for the existence of these Kelvin-Helmholtz instabilities. Since sandbanks have been observed in different seas such as the North Sea, The Gulf of Korea, the Gulf of Khambhat in India, the Jiangsu coast in China, the Persian Gulf, and Moreton Bay in Australia, the results suggest the existence of instabilities in these areas. Satellite images, intense tidal currents, undulating topography, and suspended sediment made it possible to explain the generation and identification of KelvinHelmholtz instabilities.
Źródło:
Oceanologia; 2021, 63, 3; 321-328
0078-3234
Pojawia się w:
Oceanologia
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Relation between strain hardening of steel and critical impact velocity in tension
Zależność między umocnieniem odkształceniowym stali a krytyczną prędkością uderzenia przy rozciąganiu
Autorzy:
Rodriguez-Martinez, J. A.
Rusinek, A.
Arias, A.
Powiązania:
https://bibliotekanauki.pl/articles/279460.pdf
Data publikacji:
2009
Wydawca:
Polskie Towarzystwo Mechaniki Teoretycznej i Stosowanej
Tematy:
critical impact velocity
RK model
dynamic tension
Opis:
In the present paper, a numerical study on the influence of strain hardening on the Critical Impact Velocity (CIV) in tension is conducted. Finite element code ABAQUS/Explicit is used to carry out numerical simulations of dynamic tension tests in a wide range of impact velocities up to that corresponding to the CIV. The constitutive relation due to Rusinek and Klepaczko (2001) has been used to define the material behaviour. Strain hardening parameters of the RK model were varied during the simulations. Numerical results are compared with those obtained from the analytical description of CIV proposed by Klepaczko (2005). Satisfactory agreement is found between numerical and analytical approaches. The analysis allows for a better understanding of the causes responsible of the CIV appearance.
Praca przedstawia numeryczną analizę wpływu umocnienia odkształceniowego na krytyczną prędkość uderzenia (CIV) przy rozciąganiu. W symulacjach zastosowano oprogramowanie ABAQUS/Explicit oparte na metodzie elementów skończonych. Obliczeń dokonano dla dynamicznych obciążeń rozciągających w szerokim zakresie prędkości uderzenia aż do osiągnięcia wartości krytycznej (CIV). Do opisu materiału próbki użyto równań konstytutywnych modeli Rusinka-Klepaczki. Podczas analizy zmieniano parametry umocnienia odkształceniowego opisanego tym modelem. Wyniki symulacji numerycznych porównano z analitycznym opisem CIV zaproponowanym przez Klepaczkę (2005). Uzyskano zadawalającą zgodność pomiędzy symulacją a teorią. Przedstawiona analiza przyczynia się do lepszego zrozumienia zjawisk odpowiedzialnych za powstawanie krytycznej prędkości uderzenia (CIV).
Źródło:
Journal of Theoretical and Applied Mechanics; 2009, 47, 3; 645-665
1429-2955
Pojawia się w:
Journal of Theoretical and Applied Mechanics
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Magnetic and Heat Capacity Study of the new $Gd_{1-x}Ce_xNi_5$ Series
Autorzy:
Dzubinska, A.
Reiffers, M.
Espeso, J.
Rodríguez Fernández, J.
Powiązania:
https://bibliotekanauki.pl/articles/1398287.pdf
Data publikacji:
2017-04
Wydawca:
Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:
71.27.+a
75.30.-m
75.30.Mb
Opis:
We have prepared a new system of $Gd_{1-x}Ce_xNi_5$ polycrystalline samples with concentrations x =0, 0.2, 0.5, and 0.8 in order to study the influence of different rare-earths substitutions on the ground state connected with spin fluctuations. GdNi₅ is a ferromagnetic compound with $T_{C}=31.8 K$ and CeNi₅ is a well-known spin fluctuation compound without magnetic ordering down to the lowest temperatures. X-ray diffraction study confirms the hexagonal crystal structure and the single phase samples. Magnetic properties (M(T),M(B)) show that an increasing content of Ce depresses the transition temperature, $T_{C}$, down to 4.9 K for x=0.8. The heat capacity measurements confirmed these results.
Źródło:
Acta Physica Polonica A; 2017, 131, 4; 997-999
0587-4246
1898-794X
Pojawia się w:
Acta Physica Polonica A
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Computationally-Efficient Design of a Dynamic System-Level LTE Simulator
Autorzy:
Munoz, P.
Bandera, I. de la
Ruiz, F.
Luna-Ramirez, S.
Barco, R.
Toril, M.
Lázaro, P.
Rodriguez, J.
Powiązania:
https://bibliotekanauki.pl/articles/226262.pdf
Data publikacji:
2011
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
LTE
simulator
RRM
network
link-level
system-level
E-UTRAN
Opis:
The Long-Term Evolution (LTE) is the next generation of current mobile telecommunication networks. LTE has a new flat radio-network architecture and a significant increase in spectrum efficiency. In this paper, a computationally-efficient tool for dynamic system-level LTE simulations is proposed. A physical layer abstraction is performed to predict link-layer performance with a low computational cost. At link layer, there are two important functions designed to increase the network capacity: Link Adaptation and Dynamic Scheduling. Other Radio Resource Management functionalities such as Admission Control and Mobility Management are performed at network layer. The simulator is conceived for large simulated network time to allow evaluation of optimization algorithms for the main network-level functionalities.
Źródło:
International Journal of Electronics and Telecommunications; 2011, 57, 3; 347-358
2300-1933
Pojawia się w:
International Journal of Electronics and Telecommunications
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Indirect RKKY-Type Interaction by Direct Oxygen Hopping
Autorzy:
Rodriguez-Nuńez, J.
Coqblin, B.
Beck, H.
Konior, J.
Powiązania:
https://bibliotekanauki.pl/articles/1930566.pdf
Data publikacji:
1994-02
Wydawca:
Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:
74.20.Mn
74.25.Jb
Opis:
The three-band Emery model, describing the holes in the CuO$\text{}_{2}$ planes of the high-temperature superconducting oxides, is considered. The model includes the direct oxygen-oxygen hopping integral t$\text{}_{pp}$. The exact Bogolyubov transformation is used to exclude one oxygen band and obtain a two-dimensional Anderson model. Afterward, the effective Hamiltonian is obtained by eliminating the second oxygen band with the use of two approximate canonical transformations. The effective Hamiltonian describes the spins residing on the copper sites and interacting through an indirect interaction J$\text{}_{SX}$(R), where R is the distance between two copper ions. J$\text{}_{SX}$(R) depends on the doping rate δ and is a decaying function of R. Numerical results for J$\text{}_{SX}$(R) are given for different doping rates δ for the case of parabolic bands. The obtained interaction J$\text{}_{SX}$(R), when added to the original antiferromagnetic interaction (present in oxides at δ = 0), might lead to a frustration of the long-range antiferromagnetic ordering upon doping.
Źródło:
Acta Physica Polonica A; 1994, 85, 2; 317-322
0587-4246
1898-794X
Pojawia się w:
Acta Physica Polonica A
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Experimental characterisation and modelling of the thermo-viscoplastic behaviour of steel AISI 304 within wide ranges of strain rate at room temperature
Modelowanie i doświadczalna weryfikacja termo-lepkosprężystych właściwości stali AISI 304 w szerokim zakresie prędkości odkształceń w temperaturze pokojowej
Autorzy:
Rusinek, A.
Rodriguez-Martinez, J. A.
Pesci, R.
Capelle, J.
Powiązania:
https://bibliotekanauki.pl/articles/280611.pdf
Data publikacji:
2010
Wydawca:
Polskie Towarzystwo Mechaniki Teoretycznej i Stosowanej
Tematy:
steel AISI 304
strain rate sensitivity
extended RK model
constitutive relation
thermal imaging
Opis:
In this investigation, thermo-viscoplastic behaviour of austenitic steel AISI 304 has been characterised in tension under wide ranges of strain rate at room temperature. This metal possesses an elevated strain hardening rate and ductility which enhance its capability for absorbing energy under mechanical loading. It has been observed that the rate sensitivity of the material is independent of plastic strain. Moreover, it has been noticed that beyond a certain level of loading rate the flow stress of the material sharply increases. In agreement with experimental evidences reported in the literature, this behaviour is assumed to be caused by the drag deformation mode taking place at high strain rates. Based on such considerations, the thermo-viscoplastic behaviour of the material has been macroscopically modelled by means of the extended Rusinek-Klepaczko model to viscous drag effects. Satisfactory matching has been found between the experiments and analytical predictions provided by the constitutive relation.
W pracy scharakteryzowano termo-lepkosprężyste właściwości stali AISI 304 na podstawie prób rozciągania dla szerokiego zakresu prędkości odkształceń w temperaturze pokojowej. Stal ta posiada podwyższoną ciągliwość i stopień umocnienia odkształceniowego, które to cechy powiększają jej zdolność do pochłaniania energii mechanicznej. Zaobserwowano, że wrażliwość stali na tempo obciążeń jest niezależna od wartości odkształceń plastycznych. Co więcej, zauważono, że powyżej pewnej prędkości zmian obciążenia naprężenie płynięcia materiału gwałtownie rośnie. W zgodzie z rezultatami badań doświadczalnych opisanymi w literaturze założono, że zachowanie takie wywołane jest pojawieniem się tłumionej postaci deformacji charakterystycznej dla wysokich prędkości odkształcenia. Na podstawie przeprowadzonych badań zaproponowano makroskopowy model termo-lepkosprężystych właściwości stali w oparciu o rozszerzony model Rusinka-Klepaczki dla odzwierciedlenia efektu oporu wiskotycznego. Otrzymano zadawalającą korelację pomiędzy wynikami uzyskanymi z konstytutywnego modelu materiału oraz rezultatami badań doświadczalnych.
Źródło:
Journal of Theoretical and Applied Mechanics; 2010, 48, 4; 1027-1042
1429-2955
Pojawia się w:
Journal of Theoretical and Applied Mechanics
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Synthesis of SrTiO3 by the Calcination of SrCO3 and TiO2 Mixtures Intensively Ground by Means of High Energy Milling
Autorzy:
Rocha-Rangel, Enrique
Pech-Rodríguez, Wilian J.
López-Hernández, Juan
Calles-Arriaga, Carlos A.
Armendáriz-Mireles, Eddie N.
Castillo-Robles, José A.
Rodríguez-García, José A.
Powiązania:
https://bibliotekanauki.pl/articles/356247.pdf
Data publikacji:
2020
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
SrTiO3
mechanochemistry
insulating ceramics
perovskite
Opis:
A SrTiO3 electroceramic with perovskite structure was produced by the calcination of a mixture of SrCO3 and TiO2 intensively grounded by high energy milling. For this purpose, raw materials were mixed in stoichiometric amounts in a planetary type mill; the obtained powder mixture was calcined for 2 h at temperatures between 800 and 1300°C. Samples resulting from the calcination were characterized by XRD, FTIR, SEM analysis and electrical measurements. From XRD, it was determined that the SrTiO3 formed presents the cubic structure of perovskite. The complete reaction for SrTiO3 compound formation occurs at 1200°C. Micrograph observations indicate the presence of a homogeneous microstructure with tiny grain size. The measured values of electrical resistivity were within the typical range of insulating materials.
Źródło:
Archives of Metallurgy and Materials; 2020, 65, 2; 621-626
1733-3490
Pojawia się w:
Archives of Metallurgy and Materials
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Multifractality in Fock Space of the Ground State of the Bose-Hubbard Hamiltonian
Autorzy:
Lindinger, J.
Rodríguez, A.
Powiązania:
https://bibliotekanauki.pl/articles/1030013.pdf
Data publikacji:
2017-12
Wydawca:
Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:
multifractality
localisation in Fock space
quantum phase transitions
Opis:
We present a first study of the multifractal properties of the ground state of the Bose-Hubbard Hamiltonian in Fock space. Numerical simulations of system sizes up to L=10 at unit filling suggest that multifractality is present for all values of the bosonic interaction strength. Moreover, the analysis of the generalised fractal dimensions for different densities exposes qualitatively the superfluid to Mott insulator phase transition.
Źródło:
Acta Physica Polonica A; 2017, 132, 6; 1683-1687
0587-4246
1898-794X
Pojawia się w:
Acta Physica Polonica A
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Los desafíos. O sobre las tareas que nos inspira el legado del Profesor Andrzej Dembicz (1939-2009)
Challenges, or, the Work that Inspires us the Legacy of Professor Andrzej Dembicz (1939-2009)
Autorzy:
RODRÍGUEZ ABRAHAM, Francisco J.
Powiązania:
https://bibliotekanauki.pl/articles/486162.pdf
Data publikacji:
2010
Wydawca:
Uniwersytet Warszawski. Wydawnictwa Uniwersytetu Warszawskiego
Źródło:
Revista del CESLA. International Latin American Studies Review; 2010, 1, 13; 69-71
1641-4713
Pojawia się w:
Revista del CESLA. International Latin American Studies Review
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Rosario Sevilla Soler: La Revolución Mexicana y la opinión pública española. La prensa sevillana frente al proceso de insurrección
Autorzy:
Rodríguez Abraham, Francisco J
Powiązania:
https://bibliotekanauki.pl/articles/2081336.pdf
Data publikacji:
2007
Wydawca:
Uniwersytet Warszawski. Wydział Neofilologii
Opis:
-
Źródło:
Itinerarios; 2007, 5; 217-219
1507-7241
Pojawia się w:
Itinerarios
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Discourse Markers and Modal Expressions in Speakers with and without Asperger Syndrome: A Pragmatic-Perceptive Approach
Autorzy:
Muñoz, Francisco J. Rodríguez
Powiązania:
https://bibliotekanauki.pl/articles/620592.pdf
Data publikacji:
2014-03-01
Wydawca:
Uniwersytet Łódzki. Wydawnictwo Uniwersytetu Łódzkiego
Tematy:
Asperger syndrome
discourse markers
modal expressions
perceptive pragmatics
Opis:
From a theoretical point of view, this paper offers a new framework for the analysis of discourse markers: a pragmatic-perceptive model that emphasizes the point of the communication process in which such particles become more relevant. Furthermore, this approach tries to give an account of the modal expressions (attenuators and intensifiers) that speakers use in oral speech. The quotients of absolute and relative frequency with regard to the use of textual, interactive and enunciative markers - focused on the message, the addressee and the addresser respectively - are compared in two samples of 20 subjects with typical development and other 20 with Asperger syndrome. The general results of this research suggest that these latter speakers display a suitable command of textual markers, whereas they overexploit the enunciative ones in conversation.
Źródło:
Research in Language; 2014, 12, 1; 1-25
1731-7533
Pojawia się w:
Research in Language
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Ichnofabric characterization in cores : a method of digital image treatment
Autorzy:
Rodríguez-Tovar, F. J.
Dorador, J.
Powiązania:
https://bibliotekanauki.pl/articles/191872.pdf
Data publikacji:
2015
Wydawca:
Polskie Towarzystwo Geologiczne
Tematy:
trace fossils
image treatment
ichnofabric approach
ichnofabric attributes and representations
Opis:
Ichnofabric analysis, as a relatively young ichnological approach, has witnessed rapid growth, showing its usefulness in basin analysis, with special attention to palaeoenvironmental interpretations. The ichnofabric approach has evolved from the description of trace composition and the intensity of bioturbation to integrate detailed information on numerous ichnofabric features, such as primary sedimentary structures, ichnological diversity, ichnological features, cross-cutting relation ships or tiering structures. This development has been associated with its application to the study of deep-sea sediments, especially in research on cores, which is not easy, owing to the particular features of cores. Here a method for improving ichnofabric characterization in modern marine cores is presented, on the basis of digital high-resolution image treatment, with special emphasis on the quantification of ichnofabric attributes. The proposed methodology is based on the modification of three image adjustments (image adjustment), the estimation of the percentage of the area occupied by bioturbation (digital estimation), the lateral and vertical quantification and comparison of pixel values for the infill of the trace fossils and the host sediment (pixel counting), and the integration of the information obtained in the visual representations of ichnofabrics (the ichnofabric representation). The sequential application of these proposed steps allow, 1) better identification of trace fossils, together with cross-cutting relation ships and the characterization of trace-fossil assemblages, 2) estimation of the percent age of bioturbation associated to each ichnotaxon, the whole ichnocoenosis, or a complete ichnofabric, 3) differentiation between biodeformational structures and trace fossils, discrimination between ichnotaxa, distinction between passively and actively infilled structures, and 4) evaluation of the depth of penetration by particular tracemakers.
Źródło:
Annales Societatis Geologorum Poloniae; 2015, 85, 3; 465-471
0208-9068
Pojawia się w:
Annales Societatis Geologorum Poloniae
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Telematics in a transportation system based on pipelines in the oil industry, case study of Cuba
Autorzy:
Martinez-Rodriguez, D.
Szpytko, J.
Powiązania:
https://bibliotekanauki.pl/articles/393749.pdf
Data publikacji:
2018
Wydawca:
Polskie Stowarzyszenie Telematyki Transportu
Tematy:
control systems
pipeline transport systems
oil industry
system kontroli
system transportu rurociągów
przemysł naftowy
Opis:
The paper subject is the concept of a system for monitoring the operation of a pipeline transport network using telematics for the needs of the oil industry on a selected example. Transport telematics allows to deliberately influence the proces of moving cargo/ data using the elaborated deliberate decisions, as a result of the prior analysis of information and knowledge obtained using a dispersed system of sensors associated with means of pipeline transport, infrastructure, environment and man. The concept of the process of monitoring the technical condition of pipelines for the purpose of ensuring the required efficiency of the transport system and decisions regarding the process of their operation using a dedicated distributed monitoring system of selected operational parameters will be presented. In particular, the paper will focus on the location and categorization of pipe damages.
Źródło:
Archives of Transport System Telematics; 2018, 11, 2; 30-36
1899-8208
Pojawia się w:
Archives of Transport System Telematics
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Hankel convolution on distribution spaces with exponential growth
Autorzy:
J. Betancor, Jorge
Rodríguez-Mesa, Lourdes
Powiązania:
https://bibliotekanauki.pl/articles/1221085.pdf
Data publikacji:
1996
Wydawca:
Polska Akademia Nauk. Instytut Matematyczny PAN
Tematy:
Hankel transform
Hankel convolution
distribution
Bessel functions
Opis:
We study the Hankel transformation and Hankel convolution on spaces of distributions with exponential growth.
Źródło:
Studia Mathematica; 1996, 121, 1; 35-52
0039-3223
Pojawia się w:
Studia Mathematica
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The Odyssey of a Diptych. Issues of Authorship and Provenience of the Virgen Dolorosa and the Cristo Coronado de Espinas from the Former Collection in Gołuchów
Wędrówka dyptyku. Problem autorstwa i proweniencji wizerunków „Mater Dolorosa” i „Chrystusa cierniem koronowanego” z dawnej kolekcji w Gołuchowie
Autorzy:
Rojewski, Oskar J.
Diéguez-Rodríguez, Ana
Powiązania:
https://bibliotekanauki.pl/articles/23352235.pdf
Data publikacji:
2023
Wydawca:
Polska Akademia Nauk. Instytut Sztuki PAN
Tematy:
Prymitywiści niderlandzcy
Albrecht Bouts
sztuka XVI w.
Chrystus cierniem koronowany
Mater Dolorosa
Flemish primitives
16th-Century art
Christ Crowned with Thorns
Opis:
This paper aims to gather all information about the diptych of Mater Dolorosa and Christ Crowned with Thorns, which until 2023 stayed in the Provincial Museum of Pontevedra (Museo Provincial de Pontevedra) in Spain. The research addresses two aspects of the diptych: the controversy of its attribution to a circle of Albrecht Bouts or his follower and the diptych’s arrival at the Provincial Museum of Pontevedra. This study explains that this diptych’s former attributions cannot be supported due to his style and the new research about Bout’s workshop practices. Finally, it gathers all the documentary sources about its arrival at the Pontevedra Museum.
Wędrówka dyptyku. Problem autorstwa i proweniencji wizerunków „Mater Dolorosa” i „Chrystusa cierniem koronowanego” z dawnej kolekcji w Gołuchowie. Niniejszy artykuł stanowi analizę dyptyku z przedstawieniami Mater Dolorosa i Chry- stusa cierniem koronowanego, znajdującego się do 2023 r. w kolekcji Museo Provincial de Pontevedra w Hiszpanii. Przeprowadzone badania miały na celu wyjaśnienie dwóch kwestii: kontrowersji związanych z atrybucją dzieła kręgowi Albrechta Boutsa oraz z historią jego identyfikacji i dotarcia na Półwysep Iberyjski. W oparciu o analizę stylistyczną oraz ostatnie badania nad warsztatem rodziny Bouts, Autorzy proponują nową hipotezę na temat pochodzenia obrazów. Badania archiwalne i wnikliwa lek- tura literatury przedmiotu pozwoliły także na wyjaśnienie okoliczności przekazania dyptyku do Muzeum w Pontevedra.
Źródło:
Biuletyn Historii Sztuki; 2023, 85, 1; 47-68
0006-3967
2719-4612
Pojawia się w:
Biuletyn Historii Sztuki
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Protection of Lexicographic Product Graphs
Autorzy:
Klein, Douglas J.
Rodríguez-Velázquez, Juan A.
Powiązania:
https://bibliotekanauki.pl/articles/32361746.pdf
Data publikacji:
2022-02-01
Wydawca:
Uniwersytet Zielonogórski. Wydział Matematyki, Informatyki i Ekonometrii
Tematy:
lexicographic product
weak Roman domination
secure domination
total domination
double total domination
Opis:
In this paper, we study the weak Roman domination number and the secure domination number of lexicographic product graphs. In particular, we show that these two parameters coincide for almost all lexicographic product graphs. Furthermore, we obtain tight bounds and closed formulas for these parameters.
Źródło:
Discussiones Mathematicae Graph Theory; 2022, 42, 1; 139-158
2083-5892
Pojawia się w:
Discussiones Mathematicae Graph Theory
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Use of phenological and pollen-production data for interpreting atmospheric birch pollen curves
Autorzy:
Jato, V
Rodriguez-Rajo, F.J.
Aira, M.J.
Powiązania:
https://bibliotekanauki.pl/articles/51556.pdf
Data publikacji:
2007
Wydawca:
Instytut Medycyny Wsi
Tematy:
pollen production
Betula pendula
airborne pollen
Betula alba
flowering period
phenology
Betula
Spain
birch pollen
Opis:
Although aerobiological data are frequently used as a fl owering sign in phenological research, airborne pollen counts are infl uenced by a number of factors affecting pollen curves. A study was made about the reproductive biology of birch and environmental factors infl uencing its pollen release and transport, in order to achieve a reliable interpretation of Betula pollen curves. Aerobiological data were recorded in 2002 and 2003 at two sites in NW Spain and phenological observations were carried out on 20 trees from four Betula populations (three Betula alba L. and one B. pendula Roth.). Pollen production was calculated for six Betula alba trees. Chilling and heat requirements for triggering development were calculated. Due to differences in the geographical location, budbreak and fl owering started fi rst in Betula pendula. The fl owering period lasted from 8-13 days. Reduced pollen output per anther and catkin in individual trees in 2003 prompted a marked decline in overall pollen production. Major differences observed in birch pollen curves were attributed to the infl uence both of weather conditions and pollen transport from areas where the fl owering occurs at a different time. Heat requirements calculated using phenological and aerobiological data were similar when the peak pollen- count date was used.
Źródło:
Annals of Agricultural and Environmental Medicine; 2007, 14, 2
1232-1966
Pojawia się w:
Annals of Agricultural and Environmental Medicine
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Zwiększenie trwałości rolek do formowania rur
Increasing tool life of rollers for roll forming of tubes
Autorzy:
Haduch Suski, Z.
Lozano Andrade, J.
García Rodríguez, A.
González, H. R.
Rodríguez, E.
Powiązania:
https://bibliotekanauki.pl/articles/190630.pdf
Data publikacji:
2014
Wydawca:
Stowarzyszenie Inżynierów i Techników Mechaników Polskich
Tematy:
rolki
stal narzędziowa
rury
obróbka cieplna
azotowanie
obróbka podzerowa
rolls
tool steels
tubes
heat treatment
nitriding
sub-zero treatment
Opis:
Przemysł wytwarzania rur stosuje różne metody i techniki ich produkcji, jednak formowanie rur stalowych ze szwem ma największe osiągnięcia na rynku. Podstawowe narzędzie do ich formowania, czyli rolki są tradycyjnie wykonywane ze stali narzędziowych o wysokiej zawartości chromu, na przykład stali narzędziowej D2. Jednak jakość rur nowej generacji wykonywanych ze stali o wyższej wytrzymałości i twardości wymaga zastosowania nowych materiałów przewyższających właściwości mechaniczne stali D2. Zaistniała więc konieczność zmian technologii, przeprojektowania narzędzi, przebadania nowych materiałów i opracowania odpowiedniej obróbki cieplnej, zapewniając im dłuższą żywotność i zmniejszenie przestojów w celu spełnienia oczekiwań produkcyjnych. W niniejszym projekcie zostały przeanalizowane i ocenione najlepsze opcje przedstawione na rynku narzędzi do pracy na zimno w celu zwiększenia żywotności istniejących narzędzi (stal D2). Ocenę przeprowadzono w warunkach laboratoryjnych zbliżonych maksymalnie do parametrów produkcyjnych. Wykorzystano tester do badań tribologicznych (T-05) i wykonano badania dynamiczne (próba Charpy'ego). Wykazano przydatność nowych materiałów i możliwość uzyskania oszczędności.
Industries engaged in roll forming of tubes apply different methodologies and innovating technologies in order to perform this task, but tubes with welded seams are more profitable. The basic tooling used to roll-form tubes, or rolls, are usually made of a tool steel with a high Chromium content, namely, D2 steel. However, in order to produce higher quality tubes of high-strength steels, higher mechanical properties than those shown by D2 steel are required. As a consequence, new technologies, designs, materials, and heat treatments have emerged so the new requirements are met. This has a direct impact on the costs incurred and the productivity of metalmechanic industries. In this project, various cold work steels were analysed and compared with D2 steel, in order to improve the tool life of rolls for roll forming of tubes. Tribological testing was done with a T-05 block-on-ring setup with testing conditions similar to those in real life. Charpy testing was done in order to obtain impact toughness. The obtained results are of great importance, because they may result on significant cost reductions.
Źródło:
Tribologia; 2014, 6; 43-66
0208-7774
Pojawia się w:
Tribologia
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Economic and environmental viability of building recovery in Seville (Spain). Phase 1: database in Arcgis
Autorzy:
Alba-Rodríguez, D.
Marrero, M.
Solís-Guzmán, J.
Powiązania:
https://bibliotekanauki.pl/articles/344719.pdf
Data publikacji:
2013
Wydawca:
Politechnika Krakowska im. Tadeusza Kościuszki. Wydział Architektury. Katedra Kształtowania Środowiska Mieszkaniowego
Tematy:
renovation
rehabilitation
demolition
environmental viability
cost evaluation
Opis:
The main objective of this work is the design of a model for the technical, economic and environmental evaluation in the rehabilitation and renovation of buildings versus their demolition. A first analysis is performed on the rehabilitation and renovation of buildings versus their demolition in the historical centre of Seville, Spain. Considering that many European cities have a historical centre that in many cases also represents the most authentic part of the city, this project can be adopted as an assessment tool for many similar case studies. In a first stage, a database for Seville, Spain, has been created using ArcGIS, which identifies those buildings needing restoration. The house of tomorrow maybe the one we already inhabit by transforming it with the renovations necessary in order to make it more safe, secure, energy efficient and comfortable, finally transforming it into a contemporary dwelling, even if they are part of a historical city centre.
Źródło:
Środowisko Mieszkaniowe; 2013, 11; 297-302
1731-2442
2543-8700
Pojawia się w:
Środowisko Mieszkaniowe
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Foraminiferal assemblages as palaeoenvironmental bioindicators in Late Jurassic epicontinental platforms: Relation with trophic conditions
Autorzy:
Reolid, M.
Nagy, J.
Rodriguez-Tovar, F.J.
Oloriz, F.
Powiązania:
https://bibliotekanauki.pl/articles/22691.pdf
Data publikacji:
2008
Wydawca:
Polska Akademia Nauk. Instytut Paleobiologii PAN
Tematy:
foraminiferal assemblage
paleoenvironmental bioindicator
Late Jurassic
epicontinental platform
trophic condition
Jurassic
Foraminifera
neritic shelf
Boreal Realm
Tethys Ocean
Opis:
Foraminiferal assemblages from the neritic environment reveal the palaeoecological impact of nutrient types in relation to shore distance and sedimentary setting. Comparatively proximal siliciclastic settings from the Boreal Domain (Brora section, Eastern Scotland) were dominated by inner−shelf primary production in the water column or in sea bottom, while in relatively seawards mixed carbonate−siliciclastic settings from the Western Tethys (Prebetic, Southern Spain), nutrients mainly derived from the inner−shelf source. In both settings, benthic foraminiferal assemblages increased in diversity and proportion of epifauna from eutrophic to oligotrophic conditions. The proximal setting example (Brora Brick Clay Mb.) corresponds to Callovian offshore shelf deposits with a high primary productivity, bottom accumulation of organic matter, and a reduced sedimentation rate for siliciclastics. Eutrophic conditions favoured some infaunal foraminifera. Lately, inner shelf to shoreface transition areas (Fascally Siltstone Mb.), show higher sedimentation rates and turbidity, reducing euphotic−zone range depths and primary production, and then deposits with a lower organic matter content (high−mesotrophic conditions). This determined less agglutinated infaunal foraminifera content and increasing calcitic and aragonitic epifauna, and calcitic opportunists (i.e., Lenticulina). The comparatively distal setting of the Oxfordian example (Prebetic) corresponds to: (i) outer−shelf areas with lower nutrient input (relative oligotrophy) and organic matter accumulation on comparatively firmer substrates (lumpy lithofacies group) showing dominance of calcitic epifaunal foraminifera, and (ii) mid−shelf areas with a higher sedimentation rate and nutrient influx (low−mesotrophic conditions) favouring potentially deep infaunal foraminifers in comparatively unconsolidated and nutrient−rich substrates controlled by instable redox boundary (marl−limestone rhythmite lithofacies).
Źródło:
Acta Palaeontologica Polonica; 2008, 53, 4
0567-7920
Pojawia się w:
Acta Palaeontologica Polonica
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Numerical model to study the valve overlap period in the Wärtsilä 6L 46 four-stroke marine engine
Autorzy:
Lamas, M. I.
Rodríguez, C. G.
Rebollido, J. M.
Powiązania:
https://bibliotekanauki.pl/articles/259055.pdf
Data publikacji:
2012
Wydawca:
Politechnika Gdańska. Wydział Inżynierii Mechanicznej i Okrętownictwa
Tematy:
four-stroke engine
computational fluid dynamics (CFD)
marine engine
Opis:
In this paper, a CFD (Computational Fluid Dynamics) analysis was carried out to study the Wärtsilä 6L 46 medium-speed, four-stroke marine engine. For the purpose, the commercial software ANSYS Fluent 6.3 was employed. The aim is to analyze the scavenging of gases, especially during the valve overlap period. Particularly, the pressure, velocity and mass fraction fields were numerically obtained. In order to validate the CFD results, the in-cylinder pressure was successfully compared to experimental measurements for the exhaust, intake and compression strokes of the cylinder operation. This model can be used in future works to improve the performance of these engines because the information provided is very useful to identify regions in which the pressure, velocity or distribution of gases are inadequate. Besides, to compute the quantity of burnt gases which remain inside the cylinder, fresh charge which is expelled through the exhaust valves and study the influence of parameters such as the exhaust and intake pressures, engine speed, cam profile design, etc.
Źródło:
Polish Maritime Research; 2012, 1; 31-37
1233-2585
Pojawia się w:
Polish Maritime Research
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Incidence of fungals in a vineyard of the denomination of origin ribeiro [Ourense - North-Western Spain]
Autorzy:
Fernandez-Gonzales, M
Rodriguez-Rajo, F.J.
Jato, V.
Aira, M.J.
Powiązania:
https://bibliotekanauki.pl/articles/49264.pdf
Data publikacji:
2009
Wydawca:
Instytut Medycyny Wsi
Tematy:
wine production
vineyard location
North-Western Spain
Spain
fungal disease
grape harvest
grey mould
Botrytis cinerea
powdery mildew
Uncinula necator
downy mildew
Plasmopara viticola
aerobiology
grape-vine
fungal spore
atmosphere
spore concentration
Źródło:
Annals of Agricultural and Environmental Medicine; 2009, 16, 2; 263-271
1232-1966
Pojawia się w:
Annals of Agricultural and Environmental Medicine
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Three-level modulation techniques to reduce instantaneous common mode voltage in induction machines
Autorzy:
Cusidó, J.
Luna, A.
Busquets, S.
Bordonau, J.
Rodríguez, P.
Romeral, L.
Powiązania:
https://bibliotekanauki.pl/articles/262817.pdf
Data publikacji:
2007
Wydawca:
Akademia Górniczo-Hutnicza im. Stanisława Staszica w Krakowie
Tematy:
common mode voltages
multilevel inverter
drive systems
Opis:
Problems on inverter motor drives such as bearing currents are introduced due to common mode voltages. Different solutions are proposed on literature, for two-level or multilevel inverter. Instantaneous zero common mode voltage by using a three-level inverted could be achieved. This paper proposes a commutation strategy that allows zero common mode voltage by using medium vectors, and also a new representation as a plane on the commutation space is defined which is called zero common mode voltage plane. On this defined plane, every turning vector fulfil this property. Simulations and experimental results clearly show method's efficiency.
Źródło:
Electrical Power Quality and Utilisation. Journal; 2007, 13, 2; 33-38
1896-4672
Pojawia się w:
Electrical Power Quality and Utilisation. Journal
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Betacyanin accumulation and guaiacol peroxidase activity in Beta vulgaris L. leaves following copper stress
Autorzy:
Morales, J.M.L.
Rodriguez-Monroy, M.
Sepulveda-Jimenez, G.
Powiązania:
https://bibliotekanauki.pl/articles/57381.pdf
Data publikacji:
2012
Wydawca:
Polskie Towarzystwo Botaniczne
Tematy:
betacyanin accumulation
guaiacol peroxidase activity
Beta vulgaris
red beet
leaf
copper stress
oxidative stress
betacyanin
abiotic stress
antioxidant compound
lipid peroxidation
copper
Opis:
The effect of copper stress on betacyanin accumulation and guaiacol peroxidase (GPOD) activity in leaves of different age was evaluated in red beet (Beta vulgaris L. var. Crosby Egyptian) plants. In hydroponic culture, plants were treated with 0.3 μM (control), 50 μM, 100 μM, and 250 μM of CuSO4 for 6 days. Copper was taken up and accumulated in old roots but was not translocated to leaves. However in young leaves, the increase of lipid peroxidation and reduction of growth were evident from day 3 of copper exposure; whereas in old leaves, the lipid peroxidation and growth were the same from either copper-treated or control plants. In response to copper exposure, the betacyanin accumulation was evident in young leaves by day 3, and continued to increase until day 6. Betacyanin only were accumulated in old leaves until day 6, but the contents were from 4 to 5 times lower than those observed in young leaves at the same copper concentrations. GPOD activity increased 3.3- and 1.4-fold in young and old leaves from day 3 of copper treatment respectively, but only in the young leaves was sustained at the same level until day 6. Old roots shown betacyanin in the control plants, but the betacyanin level and growth were reduced with the copper exposure. In contrast, young roots emerged by copper effect also accumulated copper and showed the highest betacyanin content of all plant parts assayed. These results indicate that betacyanin accumulation and GPOD activity are defense responses to copper stress in actively growing organs.
Źródło:
Acta Societatis Botanicorum Poloniae; 2012, 81, 3
0001-6977
2083-9480
Pojawia się w:
Acta Societatis Botanicorum Poloniae
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Factors involved in the phenological mechanism of Alnus flowering in Central Europe
Autorzy:
Rodriguez-Rajo, F J
Grewling, L.
Stach, A.
Smith, M.
Powiązania:
https://bibliotekanauki.pl/articles/50984.pdf
Data publikacji:
2009
Wydawca:
Instytut Medycyny Wsi
Tematy:
alder
Alnus
flowering
phenological mechanism
Central Europe
Europe
meteorological parameter
North Atlantic oscillation
dormancy
growth degree day
modelling
Źródło:
Annals of Agricultural and Environmental Medicine; 2009, 16, 2; 277-284
1232-1966
Pojawia się w:
Annals of Agricultural and Environmental Medicine
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Prediction of biological sensors appearance with ARIMA models as a tool for Integrated Pest Management protocols
Autorzy:
Fernandez-Gonzalez, M.
Ramos-Valcarcel, D.
Aira, M.J.
Rodriguez-Rajo, F.J.
Powiązania:
https://bibliotekanauki.pl/articles/50204.pdf
Data publikacji:
2016
Wydawca:
Instytut Medycyny Wsi
Źródło:
Annals of Agricultural and Environmental Medicine; 2016, 23, 1
1232-1966
Pojawia się w:
Annals of Agricultural and Environmental Medicine
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Energy associated tuning method for short-term series forecasting by complete and incomplete datasets
Autorzy:
Rodríguez-Rivero, C.
Pucheta, J.
Laboret, S.
Sauchelli, V.
Patińo, D.
Powiązania:
https://bibliotekanauki.pl/articles/91842.pdf
Data publikacji:
2017
Wydawca:
Społeczna Akademia Nauk w Łodzi. Polskie Towarzystwo Sieci Neuronowych
Tematy:
short time series
forecasting
missing data
energy associated to series
complete datasets
incomplete datasets
Opis:
This article presents short-term predictions using neural networks tuned by energy associated to series based-predictor filter for complete and incomplete datasets. A benchmark of high roughness time series from Mackay Glass (MG), Logistic (LOG), Henon (HEN) and some univariate series chosen from NN3 Forecasting Competition are used. An average smoothing technique is assumed to complete the data missing in the dataset. The Hurst parameter estimated through wavelets is used to estimate the roughness of the real and forecasted series. The validation and horizon of the time series is presented by the 15 values ahead. The performance of the proposed filter shows that even a short dataset is incomplete, besides a linear smoothing technique employed; the prediction is almost fair by means of SMAPE index. Although the major result shows that the predictor system based on energy associated to series has an optimal performance from several chaotic time series, in particular, this method among other provides a good estimation when the short-term series are taken from one point observations.
Źródło:
Journal of Artificial Intelligence and Soft Computing Research; 2017, 7, 1; 5-16
2083-2567
2449-6499
Pojawia się w:
Journal of Artificial Intelligence and Soft Computing Research
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The mechanical properties of PVD coatings deposited on nitrided CoCrMo alloy
Właściwości mechaniczne powłok PVD osadzanych na azotowanym stopie CoCrMo
Autorzy:
Ortega-Saenz, J.A.
Hernandez-Rodriguez, M.A.L.
Michalczewski, R.
Smolik, J.
Szczerek, M.
Powiązania:
https://bibliotekanauki.pl/articles/187966.pdf
Data publikacji:
2010
Wydawca:
Stowarzyszenie Inżynierów i Techników Mechaników Polskich
Tematy:
stop CoCrMo
azotowanie
powłoka PVD
Co-Cr-Mo alloy
nitriding
PVD coatings
Opis:
The paper concerns the evaluation of mechanical properties of the composite: 'nitrided layer-PAPVD coating' created on CoCrMo alloy intended for biotribological applications. Five nitriding processes with varying nitriding potential (p(N2/H2) =1.0, 1.5, 2.0, 2.5 and 3.0) were selected for optimising. The modulus of elasticity and nanohardness of nitrided layers were measured by nanoindentation. Cross-sections were examined by means of scanning electron microscopy (SEM) in order to determine the thickness and the uniformity of the affected zone after nitriding. The change in surface roughness was studied with the help of 3D roughness parameters obtained by atomic force microscopy (AFM) and the phase composition was determined by means of X-ray diffraction (XRD). It was found that the most suitable properties of the surface layer were achieved by nitriding at p(N2/H2) = 2.5. CrN as well as multilayer (TiN/CrN)x3 PAPVD coatings were deposited onto the substrates with and without nitiriding for evaluation of the nitriding effect on the adhesion. CoCrMo alloy nitrided sample was included for comparison. All these conditions were characterised by means of AFM, nanohardness, SEM, and scratch test. The duplex technology applied to CoCrMo orthopaedic alloy allows for a significant increase of the adhesion of the PAPVD coatings and the improvement of the load carrying capacity of the CoCrMo orthopaedic alloy.
Artykuł dotyczy oceny mechanicznych właściwości kompozytu warstwa azotowana/powłoka PVD utworzonego na stopie ortopedycznym CoCrMo stosowanym w aplikacjach biotribologicznych. Przeprowadzono optymalizację procesu azotowania dla potencjału azotowego wynoszącego (p(N2/H2) = 1,0, 1,5, 2,0, 2,5 i 3,0). Dla uzyskanych warstw azotowanych wykonano pomiary modułu elastyczności i nanotwardości. W celu oceny grubości i jednorodności uzyskanych warstw wykonano obserwacje mikroskopowe (SEM) przekrojów poprzecznych. Zmiany chropowatości powierzchni zostały ocenione za pomcą stereometrycznych parametrów mierzonych z wykorzystaniem mikroskopii sił atomowych (AFM), natomiast zmiany składu fazowego za pomocą dyfrakcji rentgenowskiej (XRD). Uzyskane wyniki wskazały, że najkorzystniejsze właściwości warstwy wierzchniej uzyskano dla potencjału p(N2/H2), wynoszącego 2,5. Dokonano oceny wpływu azotowania podłoża na adhezję powłoki CrN oraz (TiN/CrN)x3 osadzanych metodą PAPVD z wykorzystaniem technik AFM, nanotwardościomierza, SEM oraz scratchtestu. Wykazano, że technologia duplex stosowana do ortopedycznego stopu CoCrMo? pozwala na znaczne zwiększenie adhezji powłok PAPVD oraz poprawę jego właściwości przeciwzużyciowych.
Źródło:
Tribologia; 2010, 3; 173-186
0208-7774
Pojawia się w:
Tribologia
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Relative infaunal bivalve density assessed from split beam echosounder angular information
Autorzy:
Sanchez-Carnero, N.
Rodriguez-Perez, D.
Zaragoza, N.
Espinosa, V.
Freire, J.
Powiązania:
https://bibliotekanauki.pl/articles/48622.pdf
Data publikacji:
2014
Wydawca:
Polska Akademia Nauk. Instytut Oceanologii PAN
Tematy:
shellfish
bivalve
textural feature
stock assessment
acoustic technique
split-beam echosounder
mapping
monitoring
Źródło:
Oceanologia; 2014, 56, 3
0078-3234
Pojawia się w:
Oceanologia
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Dynamics of methane fermentation process and retention time for different agricultural substrates
Autorzy:
Lewicki, A.
Dach, J.
Janczak, D.
Czekała, W.
Rodríguez Carmona, P. C.
Powiązania:
https://bibliotekanauki.pl/articles/335195.pdf
Data publikacji:
2013
Wydawca:
Sieć Badawcza Łukasiewicz - Przemysłowy Instytut Maszyn Rolniczych
Tematy:
biogas plants
agricultural substrates
methane fermentation process
retention time
experimentation
Polska
Opis:
A hydraulic retention time (retention) also known as HRT is one of the most important parameter in biogas plant exploitation. In practice, there are many substrates with different HRT used in agricultural biogas plant which makes difficulties in fermentation process optimization. The aim of this study was to investigate and compare the efficiency of biomethane production and to determine the dynamics of the fermentation process expressed by reaching 60, 80, 90 and 100% of HRT. The results showed very big differences in efficiency of methane production as well as HRT duration between analyzed substrates. The total fermentation period (100% of HRT) for investigated substrates amounted average 31,5 day (range: 21-41 days). However production of last 10% of methane average out 28%. It proves very low dynamics of fermentation process in the last phase.
Źródło:
Journal of Research and Applications in Agricultural Engineering; 2013, 58, 2; 98-102
1642-686X
2719-423X
Pojawia się w:
Journal of Research and Applications in Agricultural Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
New findings of airborne fungal spores in the atmosphere of Havana, Cuba, using aerobiological non-viable methodology
Autorzy:
Almaguer-Chaves, M.
Aira, M.J.
Rojas, T.-I.
Fernandez-Gonzalez, M.
Rodriguez-Rajo, F.-J.
Powiązania:
https://bibliotekanauki.pl/articles/2081740.pdf
Data publikacji:
2018
Wydawca:
Instytut Medycyny Wsi
Tematy:
airborne fungal spores
non-viable methodology
Havana
Cuba
Opis:
Introduction. Although airborne fungal diversity in tropical countries is known to be considerable, aerobiological research to-date has identified only a part of the fungal mycobiota that may have an impact both on human health and on crops. Previous studies in Havana city identified only 30 genera and 5 spore types; therefore,new research is required in these latitudes. This study sought to investigate airborne spore levels in Havana, with a view to learning more about local fungal diversity and assessing its influence in quantitative terms. Materials and method. A Hirst type volumetric sampler was located on the rooftop of a building 35 meters above ground level, in a busy area of the city. Sampling was carried out continuously (operating 24hours/day), at 10 L per minute during the year 2015. The fungal spores were collected on a Melinex tape coated with a 2% silicone solution. The results were expressed as spores per cubic meter (spores/m3) of air when to referring to daily values, and spores count if referring to annual value. Results. Fourteen new genera were identified in the course of volumetric sampling: six produce ascospores and eight conidia. Morphobiometric characteristics were noted for all genera, and airborne concentrations were calculated. These genera accounted for 56.4% of relative fungal frequency over the study year. Conclusions. Many airbone fungi are primary causes of both respiratory disease and crop damage. These new findings constitute a major contribution to Cuba’s aerobiological database.
Źródło:
Annals of Agricultural and Environmental Medicine; 2018, 25, 2; 349-359
1232-1966
Pojawia się w:
Annals of Agricultural and Environmental Medicine
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Thirty-four identifiable airborne fungal spores in Havana, Cuba
Autorzy:
Almaguer, M.
Aira, M.-J.
Rodriguez-Rajo, F.J.
Fernandez-Gonzalez, M.
Rojas-Flores, T.I.
Powiązania:
https://bibliotekanauki.pl/articles/51658.pdf
Data publikacji:
2015
Wydawca:
Instytut Medycyny Wsi
Źródło:
Annals of Agricultural and Environmental Medicine; 2015, 22, 2
1232-1966
Pojawia się w:
Annals of Agricultural and Environmental Medicine
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Unconformity surfaces in pelagic carbonate environments : A case from the Middle Bathonian of the Betic Cordillera, SE Spain
Autorzy:
Nieto, L. M.
Rodríguez-Tovar, F. J.
Molina, J. M.
Reolid, M.
Ruiz-Ortiz, P. A.
Powiązania:
https://bibliotekanauki.pl/articles/191710.pdf
Data publikacji:
2014
Wydawca:
Polskie Towarzystwo Geologiczne
Tematy:
Unconformity
pelagic swell
softground
firmground
hardground
Middle-Late Jurassic
Betic External Zone
Opis:
Integrative studies of sedimentary and palaeontological topics for unconformity surfaces are useful in basin analysis. A middle Bathonian unconformity surface in the Ammonitico Rosso facies cropping out in the La Mola Unit (Subbetic Domain, Betic External Zone) was studied by integrating ichnological, palaeotectonic, and sedimentological analyses to decipher sea-level, tectonic, and palaeogeographic conditions during its development. The trace-fossil assemblage mainly consists of the Glossifungites (Thalassinoides, Arenicolites, and Gastrochaenolites) and Trypanites ichnofacies elements. Probable Ophiomorpha represents previous softground stages, Thalassinoides and Arenicolites were formed in firmground, Gastrochaenolites reflects an evolved firmground or early hardground, and Trypanites can be attributed to an incipient hardground. The degree of firmness, relative sea-level position, and continuity of deposition were related. The softground stage corresponds to a fall in relative sea level and continued deposition. The firmground (semi-consolidated substrate) probably reflects an extremely low sea level characterized by non-deposition, whereas the incipient hardground stage indicates an initial phase of relative sea-level rise, with an increase in marine current energy. The presence of two neptunian dyke systems reflects significant tectonic activity related to the transtensional deformation that affected the South Iberian Palaeomargin. Lateral variations in sedimentological and ichnological features recorded at similar discontinuity surfaces in nearby areas were considered and related to differences in bottom topography, with associated changes in sedimentation, and to the variable duration of the hiatus.
Źródło:
Annales Societatis Geologorum Poloniae; 2014, 84, 3; 281-295
0208-9068
Pojawia się w:
Annales Societatis Geologorum Poloniae
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Mental health of Filipino seafarers: the contributory factors and the strategies applied onboard ship
Autorzy:
Sarinas, B. G. S.
Botante, J. D. D.
Nacion, J. S.
Bernas, M. L. B.
Rodriguez, O.
Powiązania:
https://bibliotekanauki.pl/articles/2172470.pdf
Data publikacji:
2022
Wydawca:
Uniwersytet Morski w Gdyni. Wydział Nawigacyjny
Tematy:
mental health
seafarers
Filipino
onboard test
stress fatigue
seafarers problems
Opis:
Mental health is equally important with physical health. Many reports found out that poor mental health is one of the major factors of depression among seafarers. This study ascertains the factors affecting mental health and the strategies applied by Filipino seafarers to combat these issues. A survey was used as a research design. A total of 100 seafarers taken through convenience and snowball sampling answered the validated researcher-made questionnaire. The questionnaire was sent in the JBLFMU Alumni Portal, messenger, and Gmail. Frequency, percentage, and rank were used. Themes were used to classify the strategies applied by seafarers to counteract mental health issues onboard ship. The results revealed that the major contributory factor affecting the mental health of Filipino seafarers is stress, while they believed that a positive outlook in life makes one’s self free from mental health problems onboard. The top three factors are stress, fatigue, and separation from families and friends. The top three strategies to counteract factors that affect seafarers’ mental health onboard ship are staying positive, socializing with crewmates, and communicating with family.
Źródło:
TransNav : International Journal on Marine Navigation and Safety of Sea Transportation; 2022, 16, 1; 125--134
2083-6473
2083-6481
Pojawia się w:
TransNav : International Journal on Marine Navigation and Safety of Sea Transportation
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Iron-superoxide dismutase from pepper: biochemical characterization, cell localization and tissue distribution
Autorzy:
Rodriguez-Ruiz, M.
Alvarez de Morales, P.
del Rio, L.
Corpas, F.
Palma, J.
Powiązania:
https://bibliotekanauki.pl/articles/80920.pdf
Data publikacji:
2013
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
conference
iron-superoxide dismutase
pepper
Capsicum annuum
biochemical characteristics
tissue distribution
stress condition
Źródło:
BioTechnologia. Journal of Biotechnology Computational Biology and Bionanotechnology; 2013, 94, 2
0860-7796
Pojawia się w:
BioTechnologia. Journal of Biotechnology Computational Biology and Bionanotechnology
Dostawca treści:
Biblioteka Nauki
Artykuł
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