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Wyszukujesz frazę "Fernández, M. A." wg kryterium: Autor

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Wyświetlanie 1-15 z 27
Tytuł:
Nitric oxide trascriptional players during seed dormancy and germination
Autorzy:
Albertos, P.
Mateos, I.
Fernandez-Arbaizar, A.
Romero-Puertas, M.
Lorenzo, O.
Powiązania:
https://bibliotekanauki.pl/articles/80484.pdf
Data publikacji:
2013
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
conference
nitric oxide
seed dormancy
germination
phytohormone
abscisic acid
plant growth regulator
transcription factor
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:
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:
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:
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:
Pathway analysis to determine factors contributing to overall quality scores in four berry crops
Autorzy:
Cockerton, H.
Blanco Unzueta, M.
Johnson, A.W.
Vadillo Dieguez, A.
Fernandez Fernandez, F.
Powiązania:
https://bibliotekanauki.pl/articles/1077482.pdf
Data publikacji:
2020
Wydawca:
Instytut Ogrodnictwa
Tematy:
berry plant
blackberry
blueberry
raspberry
strawberry
fruit quality
environmental factor
agronomic factor
genetic factor
berry crop
Opis:
Fruit quality attributes are influenced by environmental, agronomic and genetic factors; both cultivars and growing conditions can vary substantially between UK production and imported fruit. This study aimed to record and dissect the most relevant fruit quality traits for berries imported into the UK in the winter months. Blackberry, blueberry, raspberry and strawberry fruit were imported from 11 countries into a Kent-based packhouse (UK) or purchased from major retailers between December 2018 and March 2019. Multiple fruit quality components were assessed for relative contribution towards a high “overall assessment” fruit quality score. It was found that strawberry and blackberry overall scores were affected by sweetness perception, whereas blueberry and raspberry organoleptics are more complex, with overall scores influenced by flavor perception. Multiple raspberry and strawberry fruit quality traits were found to be associated with genotypic differences, indicating a promising potential for genetic improvement through breeding. By contrast, the study findings suggest that there is less potential for genetic improvement in blueberry, and that the environment may have a large effect on blueberry fruit quality traits.
Źródło:
Journal of Horticultural Research; 2020, 28, 2; 35-42
2300-5009
Pojawia się w:
Journal of Horticultural Research
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:
Dolbeault homotopy theory and compact nilmanifolds
Autorzy:
Cordero, L.
Fernández, M.
Gray, A.
Ugarte, L.
Powiązania:
https://bibliotekanauki.pl/articles/1341819.pdf
Data publikacji:
1998
Wydawca:
Polska Akademia Nauk. Instytut Matematyczny PAN
Opis:
In this paper we study the degeneration of both the cohomology and the cohomotopy Frölicher spectral sequences in a special class of complex manifolds, namely the class of compact nilmanifolds endowed with a nilpotent complex structure. Whereas the cohomotopy spectral sequence is always degenerate for such a manifold, there exist many nilpotent complex structures on compact nilmanifolds for which the classical Frölicher spectral sequence does not collapse even at the second term.
Źródło:
Banach Center Publications; 1998, 45, 1; 137-154
0137-6934
Pojawia się w:
Banach Center Publications
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Permanent Magnetism in Thiol Capped Nanoparticles Gold and ZnO
Autorzy:
Crespo, P.
García, M.
Fernández-Pinel, E.
de la Venta, J.
Merino, J.
Quesada, A.
Hernando, A.
Fernández, A.
Penadés, S.
Powiązania:
https://bibliotekanauki.pl/articles/1813862.pdf
Data publikacji:
2008-01
Wydawca:
Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:
75.75.+a
73.22.-f
75.30.Hx
Opis:
In spite of the diamagnetic behavior exhibited by bulk ZnO and Au, a ferromagnetic-like behavior is induced in nanoparticles of both systems by appropriate surface functionalization. By capping with thiol derivatized molecules, magnetic hysteresis is observed even at room temperature, whereas the magnetization has a very little temperature dependence. Capping induces an alteration of their electronic configuration that depends on the capping molecule, as evidenced by X-ray absorption spectroscopy, that strongly affects their magnetic properties.
Źródło:
Acta Physica Polonica A; 2008, 113, 1; 515-520
0587-4246
1898-794X
Pojawia się w:
Acta Physica Polonica A
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:
Influence of microbial consortium in the production of China aster and gaillardia seedlings
Autorzy:
Fernandez, M.
Nachu, N.S.
Revanna, A.
Bagyaraj, J.D.
Powiązania:
https://bibliotekanauki.pl/articles/1077469.pdf
Data publikacji:
2020
Wydawca:
Instytut Ogrodnictwa
Tematy:
China aster
gaillardia seedling
flowering plant
inoculation
arbuscular mycorrhizal fungi
Funneliformis mosseae
Bacillus sonorensis
plant growth-promoting rhizobacteria
Opis:
China aster and gaillardia are flowering plants with high economic importance in floriculture. In the present investigation, response of China aster and gaillardia seedlings to inoculation with the arbuscular mycorrhizal fungus Funneliformis mosseae + the plant growth-promoting rhizobacterium Bacillus sonorensis was studied by growing in multipots (pro trays). The germination percentage and plant growth parameters: length of shoots, roots and whole seedlings, stem diameter, biovolume index, plant strength, vigor index, dry weight and nutrient uptake, were analyzed 60 days after sowing. The microbial parameters, mycorrhizal root colonization and spore count, and the population of B. sonorensis in the substrate were also determined. The results brought out that growth of inoculated seedlings was significantly improved as compared to uninoculated seedlings. Based on the plant growth and microbial parameters studied, it was concluded that inoculating the substrate in pro trays with the microbial consortium results in producing vigorously growing seedlings.
Źródło:
Journal of Horticultural Research; 2020, 28, 2; 21-28
2300-5009
Pojawia się w:
Journal of Horticultural Research
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
New Eocene South American native ungulates from the Quebrada de los Colorados Formation at Los Cardones National Park, Argentina
Autorzy:
Fernandez, M.
Zimicz, A.N.
Bond, M.
Chornogubsky, L.
Arnal, M.
Cardenas, M.
Fernicola, J.C.
Powiązania:
https://bibliotekanauki.pl/articles/2082287.pdf
Data publikacji:
2021
Wydawca:
Polska Akademia Nauk. Instytut Paleobiologii PAN
Tematy:
Mammalia
South American native ungulates
Casamayoran SALMA
Paleogene
Quebrada de Los
Colorados Formation
Argentina
Opis:
In the last few years, the Quebrada de Los Colorados Formation has become an important middle Eocene fossiliferous unit in Northwestern Argentina. In this unit, the South American native ungulates were until now only represented by the order Notoungulata, including one family of Typotheria and three of Toxodontia. In this contribution, we present a new faunistic assemblage of South American native ungulates, collected from outcrops of the Quebrada de Los Colorados Formation at Los Cardones National Park, Calchaquí Valleys, Salta Province (Argentina). This new assemblage is constituted by the following taxa: litoptern Didolodontidae cf. Ernestokokenia sp., Astrapotheria indet., and notoungulate Notostylopidae Homalostylops sp., a ?Homalostylops sp., typothere “Oldfieldthomasiidae” Colbertia falui sp. nov., Colbertia lumbrerense, and Colbertia sp. and toxodont “Notohippidae” Pampahippus secundus. Colbertia falui sp. nov. differs from the other species of Colbertia by the following features: lower cheek teeth with both more labially angular and oblique trigonid; lower premolars more labio-lingually compressed; with proportionally larger trigonid, and shorter talonid; ectoflexid transversally deeper; lower molars with a more developed paralophid, and more expanded metalophid and entoconid; the latter is located in a more mesial position, being closer to the metaconid; deep and lingually narrower talonid basin; disto-lingual sulcus transversally shallower; more developed cingulids; and m3 with less lingually projected hypoconulid. This new fauna markedly increases the taxonomic richness known for this formation since it includes the first mention of notostylopids, “oldfieldthomasiids”, litoptern didolodontids, and astrapotheres. With the current evidence, we postulate an ungulate migration from Patagonia to Northwestern Argentina during the Eocene. We also hypothesize that the observed taxonomic differences among the Quebrada de Los Colorados, Geste, and Lumbrera formations are more probably associated to orogenic factors that have regulated the faunal dynamic in Northwestern Argentina during the Paleogene than to a differential sampling effort or taphonomic biases.
Źródło:
Acta Palaeontologica Polonica; 2021, 66, 1; 85-97
0567-7920
Pojawia się w:
Acta Palaeontologica Polonica
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Effect of air temperature on forecasting the start of Cupressaceae pollen type in Ponferrada [Leon, Spain]
Autorzy:
Fuertes-Rodriguez, C R
Gonzales-Parrado, Z.
Vega-Maray, A.M.
Valencia-Barrera, R.M.
Fernandez-Gonzales, D.
Powiązania:
https://bibliotekanauki.pl/articles/50902.pdf
Data publikacji:
2007
Wydawca:
Instytut Medycyny Wsi
Tematy:
Ponferrada
woody plant
pollen
aerobiology
heat requirement
Leon
Cupressaceae
forecast
chilling requirement
Spain
dormancy
Opis:
In order to survive periods of adverse cold climatic conditions, plant requirements are satisfi ed by means of physiological adaptations to prevent cells from freezing. Thus, the growth of woody plants in temperate regions slows down and they enter into a physiological state called dormancy. In order to identify the chilling and heat requirements to overcome the dormancy period of Cupressaceae pollen type in the south of Europe, we have carried out our study with aerobiological data from a 10-year (1996- 2005) period in Ponferrada, León (Spain). For the chilling requirements the best result was with a threshold temperature of 7.1ºC and an average of 927 CH. Calculation of heat requirements was carried out with maximum temperature, with 490 growth degree days (GDD) needed, with a threshold temperature of 0ºC. We have used the 2002-2003, 2003- 2004 and 2004-2005 periods in order to determine the real validity of the model. We have not used these years in developing the models. The dates predicted differ in only a few days from those observed: in 2002-2003 there was a difference of 11 days, in 2003-2004 predicted and observed dates were the same, but in 2004-2005 the difference obtained was of 43 days.
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:
Molecular aerobiology-Plantago allergen Pla l 1 in the atmosphere
Autorzy:
Gonzalez-Parrado, Z.
Fernandez-Gonzalez, D.
Camazon, B.
Valencia-Barrera, R.M.
Vega-Maray, A.M.
Asturias, J.A.
Monsalve, R.I.
Mandrioli, P.
Powiązania:
https://bibliotekanauki.pl/articles/50756.pdf
Data publikacji:
2014
Wydawca:
Instytut Medycyny Wsi
Źródło:
Annals of Agricultural and Environmental Medicine; 2014, 21, 2
1232-1966
Pojawia się w:
Annals of Agricultural and Environmental Medicine
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Influence of the winter phytoplankton bloom on the settled material in a temperate shallow estuary
Autorzy:
Guinder, V.A.
Lopez-Abbate, M.C.
Berasategui, A.A.
Negrin, V.L.
Zapperi, G.
Pratolongo, P.D.
Fernandez Severini, M.D.
Popovich, C.A.
Powiązania:
https://bibliotekanauki.pl/articles/47931.pdf
Data publikacji:
2015
Wydawca:
Polska Akademia Nauk. Instytut Oceanologii PAN
Tematy:
phytoplankton bloom
chlorophyll a
sediment trap
resuspension
shallow estuary
pelagic food web
nutrient concentration
particulate organic matter
coastal environment
Źródło:
Oceanologia; 2015, 57, 1
0078-3234
Pojawia się w:
Oceanologia
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Application of the new Monte Carlo code AlfaMC to the calibration of alpha-particle sources
Autorzy:
Jurado Vargas, M.
Fernández Timón, A.
García Orellana, C.
Powiązania:
https://bibliotekanauki.pl/articles/148497.pdf
Data publikacji:
2015
Wydawca:
Instytut Chemii i Techniki Jądrowej
Tematy:
alpha-particle spectrometry
code AlfaMC
Monte Carlo simulation
scattering and self-absorption
Opis:
Measurements of α-particle sources require corrections to the counting rate due to scattering and self- -absorption in the source and the backing material. In this study, we describe a simple procedure to estimate these corrections using the new Monte Carlo code AlfaMC to consider the effects of scattering and self-absorption conjointly, and so to determine the activity of α emitters. The procedure proposed was applied to 235UO2 sources deposited on highly polished platinum backings. In general, the dependence of the efficiency with source thickness was in good agreement with a simple model considering a linear and a hyperbolic behavior for thin and thick sources, respectively, although significant deviations from this model were found for very thin sources. For these very thin sources, the Monte Carlo simulation revealed to be as a required method in the primary calibration of α-particle sources. The efficiency results obtained by simulation with AlfaMC were in agreement with available efficiency data.
Źródło:
Nukleonika; 2015, 60, No. 3, part 2; 651-655
0029-5922
1508-5791
Pojawia się w:
Nukleonika
Dostawca treści:
Biblioteka Nauki
Artykuł
Wyświetlanie 1-15 z 27

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