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Wyświetlanie 1-15 z 61
Tytuł:
Zastosowanie nowoczesnych cieczy roboczych w chwytakach robotów
Autorzy:
Osowski, K.
Fernández, M. A.
Olszak, A.
Huang, C. Y.
Kęsy, A.
Chang, J. Y.
Kęsy, Z.
Powiązania:
https://bibliotekanauki.pl/articles/305102.pdf
Data publikacji:
2018
Wydawca:
Wydawnictwo Druk-Art
Tematy:
chwytaki
sprzęgła wiskotyczne
ciecz elektroreologiczna
ciecz magnetoreologiczna
grasper
viscous coupling
electro-medical liquid
magnetorheological fluid
Opis:
W artykule omówiono wykorzystanie cieczy o nietypowych właściwościach w chwytakach robotów. Ciecze elektro- i magnetoreologiczne, zmieniające swoje właściwości reologiczne w obecności pola elektrycznego lub magnetycznego, zastosowano jako ciecze robocze sprzęgieł wiskotycznych, wchodzących w skład układu przeniesienia napędu chwytaków. Przedstawiono dwa rozwiązania konstrukcyjne prototypowych chwytaków robotów przemysłowych z takimi sprzęgłami. Rozważono również ciecze luminescencyjne, reagujące na nacisk, pod kątem ich zastosowania w mikroczujnikach siły nacisku szczęk chwytaka.
The paper discusses the use of modern fluids with untypical properties in robot grippers. The electro- and magnetorheological fluids, changing their rheological properties in the presence of an electric or magnetic field, were used as working fluids of viscous clutches included in the griper drive transmission system. Two design solutions were presented for prototype industrial robot grippers with such clutches. Luminescent pressure-sensitive fluids have also been considered for their use in the micro-sensors for sensing force of the gripper’s jaw.
Źródło:
Napędy i Sterowanie; 2018, 20, 3; 100-106
1507-7764
Pojawia się w:
Napędy i Sterowanie
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Youngest agamid lizards from Western Europe (Sierra de Quibas, Spain, late Early Pleistocene)
Autorzy:
Blain, H.-A.
Bailon, S.
Agusti, J.
Pinero-Garcia, P.
Lozano-Fernandez, I.
Sevilla, P.
Lopez-Garcia, J.M.
Sanchez, G.R.
Mancheno, M.A.
Powiązania:
https://bibliotekanauki.pl/articles/21138.pdf
Data publikacji:
2014
Wydawca:
Polska Akademia Nauk. Instytut Paleobiologii PAN
Opis:
Here we report a new Early Pleistocene record of agamid lizards (Agamidae indet.) from the Spanish locality of Quibas (ca. 1.3–1.0 Ma), which represents the latest evidence of the family in Western Europe. Up to now, the family Agamidae was considered to have disappeared in this region at 1.8 Ma. This new record implies the survival of agamid lizards for a large part of the Early Pleistocene in the southernmost Iberian Peninsula, probably because of favourable climatic and environmental conditions. Consequently, the formerly detected Pliocene / Pleistocene boundary is no longer recognisable in the evolution of the herpetological assemblages in Western Europe.
Źródło:
Acta Palaeontologica Polonica; 2014, 59, 4
0567-7920
Pojawia się w:
Acta Palaeontologica Polonica
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Turtle tracks from the Late Jurassic of Asturias, Spain
Autorzy:
Avanzini, M
Garcia-Ramos, J.C.
Lires, J.
Menegon, M.
Pinuela, L.
Fernandez, L.A.
Powiązania:
https://bibliotekanauki.pl/articles/20797.pdf
Data publikacji:
2005
Wydawca:
Polska Akademia Nauk. Instytut Paleobiologii PAN
Opis:
Although tracks of dinosaurs are well known from Upper Jurassic sediments, tracks of non−dinosaurian vertebrates are fairly rare. The Upper Jurassic Lastres Formations of Asturias in northern Spain contain many vertebrate tracksites that include footprints and trackways of non−dinosaurian tetrapods. Several of these tracks are natural casts of pentadactyl to tridactyl footprints with digits connected by arched structures. The digits are short with deep scratch marks oriented anteriorly. The Asturian tracks show a high degree of morphological similarity to other specimens previously described as possible turtle tracks. Observations from extant turtle trackways show some surprising similarities with the fossil material. The tracks are here interpreted as having been made by turtles partially buoyed by water or by turtles walking in a slightly wet subaerial environment.
Źródło:
Acta Palaeontologica Polonica; 2005, 50, 4; 743-755
0567-7920
Pojawia się w:
Acta Palaeontologica Polonica
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Transcriptomic profiling of linolenic acid-responsive genes in ROS signalling from RNA-seq data in Arabidopsis
Autorzy:
Mata-Perez, C.
Sanchez-Calvo, B.
Begara-Morales, J.
Padilla, M.
Valderrama, R.
Luque, F.
Fernandez-Ocana, A.
Corpas, F.
Barroso, J.
Powiązania:
https://bibliotekanauki.pl/articles/80890.pdf
Data publikacji:
2013
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
conference
linoleic acid
polyunsaturated fatty acid
jasmonic acid
phytohormone
reactive oxygen species
hydrogen peroxide
gene expression
Arabidopsis thaliana
lipoxygenase
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
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:
The role of mutagenesis in the modification of the fatty acid profile of oilseed crops
Autorzy:
Velasco, L
Perez-Vich, B.
Fernandez-Martinez, J.M.
Powiązania:
https://bibliotekanauki.pl/articles/2043643.pdf
Data publikacji:
1999
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
oil seed
mutagenesis
induced mutation
fatty acid
crop
modification
Źródło:
Journal of Applied Genetics; 1999, 40, 3; 185-209
1234-1983
Pojawia się w:
Journal of Applied Genetics
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
THE DECADE OF FEAR (LA DÉCADA DEL MIEDO. DRAMATURGIAS AUDIOVISUALES POST-11 DE SEPTIEMBRE), red. M. Fernández Morales, Peter Lang AG, International Academic Publishers, Bern 2013, 398 p.
Autorzy:
Máciucá, Gina
Powiązania:
https://bibliotekanauki.pl/articles/615569.pdf
Data publikacji:
2016
Wydawca:
Uniwersytet Opolski
Źródło:
Stylistyka; 2016, 25; 561-569
1230-2287
2545-1669
Pojawia się w:
Stylistyka
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Template Assisted Deposition of Ferromagnetic Nanostructures: from Antidot Thin Films to Multisegmented Nanowires
Autorzy:
Prida, V.M.
Salaheldeen, M.
Pfitzer, G.
Hidalgo, A.
Vega, V.
González, S.
Teixeira, J.
Fernández, A.
Hernando, B.
Powiązania:
https://bibliotekanauki.pl/articles/1032144.pdf
Data publikacji:
2017-04
Wydawca:
Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:
75.30.Gw
75.70.Kw
75.75.-c
75.70.-i
75.70.Rf
Opis:
The growth of nanostructured materials by means of different deposition methods employing nanoporous anodic aluminum oxide membranes as patterned templates has been widely used during last years due to the outstanding features displayed by these nanoporous templates. Here we report on the synthesis, morphology and magnetic properties exhibited by novel magnetic 1D and 2D nanostructured materials having nanowire or antidot thin films geometry, respectively, together to that of geometrically diameter modulated ferromagnetic nanowires. Their magnetic properties will be analyzed and discussed based on the different anisotropic behavior derived from their morphological and microstructural features.
Źródło:
Acta Physica Polonica A; 2017, 131, 4; 822-827
0587-4246
1898-794X
Pojawia się w:
Acta Physica Polonica A
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Systematic revision of a Miocene sperm whale from Patagonia, Argentina, and the phylogenetic signal of tympano-periotic bones in Physeteroidea
Autorzy:
Paolucci, F.
Buono, M.R.
Fernandez, M.S.
Cuitino, J.
Powiązania:
https://bibliotekanauki.pl/articles/2082284.pdf
Data publikacji:
2021
Wydawca:
Polska Akademia Nauk. Instytut Paleobiologii PAN
Tematy:
Mammalia
Physeteroidea
Preaulophyseter gualichensis
Miocene
Patagonia
Argentina
Opis:
Sperm whales (Physeteroidea) include today only two genera of morphologically disparate odontocetes: the largest toothed whale known (Physeter macrocephalus) and small sized forms (Kogia spp.). In contrast, their fossil record indicates a high diversity for the group during the Miocene, with over 20 species recognized. Miocene marine sediments from Patagonia (Argentina) record this diversity, including at least five species. Among them, Preaulophyseter gualichensis, from the Miocene of Gran Bajo del Gualicho Formation, has been one of the most enigmatic. Despite the fragmentary nature of the type and referred materials (isolated teeth and periotics), which casts some doubts on its validity, this species has not been revised since its original description. In this contribution, we re-describe the materials referred to P. gualichensis, revise the taxonomic status of the species and evaluate the phylogenetic signal of ear bones among Physeteroidea. Our results indicate that the physeteroid tympano-periotic complex morphology is poorly diagnostic at the species level. Intraspecific variation (including ontogeny and sexual dimorphism) and/or taphonomic processes cannot be ruled out as the causes of the minor differences observed among specimens. We suggest that sperm whale tympano-periotics retain many plesiomorphic characters and are diagnostic only between kogiids and non-kogiid physeteroids. Based on the fragmentary and isolated state of the studied specimens, and the lack of diagnostic characters in both teeth and periotics, we consider P. gualichensis as nomen dubium and we re-assign the referred specimens as Physeteroidea indet. A conservative morphology of the tympano-periotic and, to a lesser extent, the nasal complex in sperm whales, might result from the morpho-functional constraints imposed by a highly specialized but successful echolocation system.
Źródło:
Acta Palaeontologica Polonica; 2021, 66, 1; 63-76
0567-7920
Pojawia się w:
Acta Palaeontologica Polonica
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Surface-Coated CdS Nanocrystals
Autorzy:
Fernandez, J.
de Souza-Parise, M.
Morais, P.
Powiązania:
https://bibliotekanauki.pl/articles/1399521.pdf
Data publikacji:
2013-07
Wydawca:
Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:
78.30.Fs
78.40.Fy
78.55.Et
78.67.Bf
78.70.Ck
Opis:
CdS nanocrystals were prepared using a standard colloidal route (co-precipitation chemical reaction) whereas modulation of the optical and structural properties was realized via surface coating the nanocrystals with ethylene glycol molecules using an in situ procedure. The as-produced nanocrystals were characterized by X-ray diffraction, Raman spectroscopy, UV-absorption measurements and photoluminescence. The nanocrystal quality was revealed by the spectroscopic data, though the final product presents a mixture of both zinc blende (cubic) and wurtzite (hexagonal) phases. The X-ray data indicated that the concentration of the ethylene glycol used during the synthesis process modulates the nanocrystal size and the crystal phase of the end material.
Źródło:
Acta Physica Polonica A; 2013, 124, 1; 108-111
0587-4246
1898-794X
Pojawia się w:
Acta Physica Polonica A
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Spectrally tunable light source based on light-emitting diodes for custom lighting solutions
Autorzy:
Burgos-Fernandez, F. J.
Vilaseca, M.
Perales, E.
Herrera-Ramirez, J. A.
Martinez-Verdu, F. M.
Pujol, J.
Powiązania:
https://bibliotekanauki.pl/articles/173803.pdf
Data publikacji:
2016
Wydawca:
Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej
Tematy:
solid state lighting
light-emitting diodes
CIE standard illuminants
minimization algorithm
customized lighting design
radiometry
Opis:
This study describes a novel spectral LED-based tunable light source used for customized lighting solutions, especially for the reconstruction of CIE (Commission Internationale de l'Eclairage) standard illuminants. The light source comprises 31 spectral bands ranging from 400 to 700 nm, an integrating cube and a control board with a 16-bit resolution. A minimization algorithm to calculate the weighting values for each channel was applied to reproduce illuminants with precision. The differences in spectral fitting and colorimetric parameters showed that the reconstructed spectra were comparable to the standard, especially for the D65, D50, A and E illuminants. Accurate results were also obtained for illuminants with narrow peaks such as fluorescents (F2 and F11) and a high-pressure sodium lamp (HP1). In conclusion, the developed spectral LED-based light source and the minimization algorithm are able to reproduce any CIE standard illuminants with a high spectral and colorimetric accuracy able to advance available custom lighting systems useful in the industry and other fields such as museum lighting.
Źródło:
Optica Applicata; 2016, 46, 1; 117-129
0078-5466
1899-7015
Pojawia się w:
Optica Applicata
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Some facts concerning the epizootiology of trichinellosis in Spain
Niektóre dane o epizootiologii włośnicy w Hiszpanii
Nekotorye fakty o ehpizootologii trikhinelleza v Ispanii
Autorzy:
Cordero del Campillo, M.
Martinez Fernandez, A.
Aller Gancedo, B.
Powiązania:
https://bibliotekanauki.pl/articles/2177505.pdf
Data publikacji:
1970
Wydawca:
Polskie Towarzystwo Parazytologiczne
Źródło:
Wiadomości Parazytologiczne; 1970, 16, 1; 100-108
0043-5163
Pojawia się w:
Wiadomości Parazytologiczne
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Some comments on compositional analysis in management and production engineering
Autorzy:
Vives-Mestres, M.
Martín-Fernández, J. A.
Powiązania:
https://bibliotekanauki.pl/articles/406810.pdf
Data publikacji:
2015
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
production composition
log ratio analysis
clr-biplot
CoDa dendrogram
ternary diagram
simplex
Opis:
This paper introduces the most basic concepts of the compositional analysis of data with a simple but real example form the Management and Production Engineering (MPE) field. Compositional Data (CoDa) are vectors of positive elements that represent parts of a whole and are widely found in MPE, i.e. production times, resource composition, percentage utilization of work stands, waste components. . . The need for an analysis based on ratios of components (or better log-ratios of components) is illustrated step by step, and findings are compared to the corresponding standard methods applied to raw compositions. The paper also exposes the principles of CoDa analysis and presents two basic descriptive tools suitable for CoDa: the clr-biplot and the CoDa dendrogram. The example is a time series, from 1994 to 2013, of motor vehicle production in 8 countries and regions.
Źródło:
Management and Production Engineering Review; 2015, 6, 2; 63-72
2080-8208
2082-1344
Pojawia się w:
Management and Production Engineering Review
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Solar generation estimation in electric power systems for prospective frequency control studies
Autorzy:
Martínez-García, A. A.
Torres-Breffe, O. E.
Vilaragut-Llanes, M.
Delgado-Fernandez, O.
Szpytko, J.
Salgado-Duarte, Y.
Powiązania:
https://bibliotekanauki.pl/articles/2172499.pdf
Data publikacji:
2022
Wydawca:
Uniwersytet Morski w Gdyni. Wydział Nawigacyjny
Tematy:
green shipping
solar power
electric power systems
energy storage systems
photovoltaic power generation
cuban electrical system
energy sources
photo voltage solar generation
Opis:
Increasing the presence of non-conventional clean energy sources in Electrical Power Systems (EPS) is a global strategic goal. Particularly, photovoltaic systems are attractive due to their versatility, low maintenance cost, easy installation, noiselessness, etc. However, the integration of photovoltaic systems into EPS increases the necessary regulation actions performed by system generators due to stochastic fluctuations of solar radiation, especially on cloudy days. Even using complex models that consider many variables, solar irradiation and its corresponding photovoltaic power generation are difficult variables to forecast with accuracy in cloudy day scenarios. To address this problem, Energy Storage Systems (BESS) have been proposed as a solution to mitigate the variability of photovoltaic generation, which reduce the need to use traditional spinning reserves and provide auxiliary grid services. The BESS selection required to mitigate photovoltaic generation is directly related to the worst-case daily variability of photovoltaic generation in the short term. This paper proposes a practical estimation of daily perspective photo voltage solar generation curve in Electrical Power Systems.
Źródło:
TransNav : International Journal on Marine Navigation and Safety of Sea Transportation; 2022, 16, 2; 211--217
2083-6473
2083-6481
Pojawia się w:
TransNav : International Journal on Marine Navigation and Safety of Sea Transportation
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Software Startups – A Research Agenda
Autorzy:
Unterkalmsteiner, M.
Abrahamsson, P.
Wang, X. F.
Nguyen-Duc, A.
Shah, S.
Bajwa, S. S.
Baltes, G. H.
Conboy, K.
Cullina, E.
Dennehy, D.
Edison, H.
Fernandez-Sanchez, C
Garbajosa, J.
Gorschek, T.
Klotins, E.
Hokkanen, L.
Kon, F.
Lunesu, I.
Marchesi, M.
Morgan, L.
Oivo, M.
Selig, C.
Seppänen, P.
Sweetman, R.
Tyrväinen, P.
Ungerer, C.
Yagüe, A.
Powiązania:
https://bibliotekanauki.pl/articles/953060.pdf
Data publikacji:
2016
Wydawca:
Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej
Tematy:
software startup
research agenda
software-intensive systems
Opis:
Software startup companies develop innovative, software-intensive products within limited time frames and with few resources, searching for sustainable and scalable business models. Software startups are quite distinct from traditional mature software companies, but also from micro-, small-, and medium-sized enterprises, introducing new challenges relevant for software engineering research. This paper’s research agenda focuses on software engineering in startups, identifying, in particular, 70+ research questions in the areas of supporting startup engineering activities, startup evolution models and patterns, ecosystems and innovation hubs, human aspects in software startups, applying startup concepts in non-startup environments, and methodologies and theories for startup research. We connect and motivate this research agenda with past studies in software startup research, while pointing out possible future directions. While all authors of this research agenda have their main background in Software Engineering or Computer Science, their interestin software startups broadens the perspective to the challenges, but also to the opportunities that emerge from multi-disciplinary research. Our audience is therefore primarily software engineering researchers, even though we aim at stimulating collaborations and research that crosses disciplinary boundaries. We believe that with this research agenda we cover a wide spectrum of the software startup industry current needs.
Źródło:
e-Informatica Software Engineering Journal; 2016, 10, 1; 89-123
1897-7979
Pojawia się w:
e-Informatica Software Engineering Journal
Dostawca treści:
Biblioteka Nauki
Artykuł
Wyświetlanie 1-15 z 61

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