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    Wyświetlanie 1-14 z 14
    Tytuł:
    X-Ray Magnetic Circular Dichroism and Compton Scattering: Application to 5f Electron Systems
    Autorzy:
    Kernavanois, N.
    Sanchez, J. P.
    Dalmas de Réotier, P.
    Yaouanc, A.
    Powiązania:
    https://bibliotekanauki.pl/articles/2028918.pdf
    Data publikacji:
    2001-11
    Wydawca:
    Polska Akademia Nauk. Instytut Fizyki PAN
    Tematy:
    87.64.Ni
    32.80.Cy
    75.25.+z
    75.75.+a
    Opis:
    The basic properties of magnetism depend strongly on the spin and orbital components of magnetization. Information about the magnetic moments can be gained using new techniques, like X-ray magnetic circular dichroism or Compton scattering, developed at third-generation synchrotron sources. After a brief introduction to the basic principles of these new magnetic tools, examples of experiments on 5f-electron based systems are presented.
    Źródło:
    Acta Physica Polonica A; 2001, 100, 5; 629-645
    0587-4246
    1898-794X
    Pojawia się w:
    Acta Physica Polonica A
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Noise Monitoring Networks as Tools for Smart City Decision-Making
    Autorzy:
    Sánchez-Sánchez, R.
    Fortes-Garrido, J. C.
    Bolívar, J. P.
    Powiązania:
    https://bibliotekanauki.pl/articles/177038.pdf
    Data publikacji:
    2018
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    traffic noise
    noise monitoring networks
    smart city
    pavement
    Opis:
    Noise Monitoring Networks (NMNs) have been implemented in many cities by town councils, allowing them to know, in real time, the environmental noise levels in the busiest streets by the continuous measurement of selected acoustic parameters throughout the year. NMNs are aimed at: 1) detecting areas of the city that breach guidelines for acoustic quality objectives; 2) obtaining noise data needed to develop and implement action plans; and 3) informing the public about the permissible acoustic pollution for different districts and times of day. The aim of this work was to analyse data from the NMN of the city of Huelva (Spain), in order to study the influence on the noise of re-asphalting the busiest streets. The street pavements improve LAeq, 24 h from 3 up to 8 dB(A), depending on the type of the route. These results could be used by council authorities in deciding when to undertake the re-asphalting of the streets of Huelva, and to select the type of asphalt that should be used.
    Źródło:
    Archives of Acoustics; 2018, 43, 1; 103-112
    0137-5075
    Pojawia się w:
    Archives of Acoustics
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Non-Smoothness in the Asymptotics of Thin Shells and Propagation of Singularities. Hyperbolic Case
    Autorzy:
    Karamian, P.
    Sanchez-Hubert, J
    Sanchez Palencia, E.
    Powiązania:
    https://bibliotekanauki.pl/articles/907888.pdf
    Data publikacji:
    2002
    Wydawca:
    Uniwersytet Zielonogórski. Oficyna Wydawnicza
    Tematy:
    matematyka
    hyperbolic systems
    propagation of singularities
    shells
    Opis:
    We consider the limit behaviour of elastic shells when the relative thickness tends to zero. We address the case when the middle surface has principal curvatures of opposite signs and the boundary conditions ensure the geometrical rigidity. The limit problem is hyperbolic, but enjoys peculiarities which imply singularities of unusual intensity. We study these singularities and their propagation for several cases of loading, giving a somewhat complete description of the solution.
    Źródło:
    International Journal of Applied Mathematics and Computer Science; 2002, 12, 1; 81-90
    1641-876X
    2083-8492
    Pojawia się w:
    International Journal of Applied Mathematics and Computer Science
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Acoustic Influence of Vehicles on a Protected Natural Area in the Southwest of the Iberian Peninsula
    Autorzy:
    Sánchez-Sánchez, R.
    Fortes-Garrido, J. C.
    Bolívar, J. P.
    Powiązania:
    https://bibliotekanauki.pl/articles/176775.pdf
    Data publikacji:
    2018
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    natural sounds
    soundscapes
    noise
    protected natural area
    Opis:
    Natural sounds are essential elements for ecosystems, and therefore necessary for many ecological functions, forming what is called “natural soundscapes”. The Natural Reserve Laguna del Portil (NRLP), located in the southwest of the Iberian Peninsula, is an ecosystem which was declared by Spanish authorities as Protected Natural Reserve. In the south area of the NRLP, there is a regional road with high traffic intensity, which affects the soundscapes of this natural reserve. In this study, the road potential noise impact on the natural sounds of the NLRP is analysed. This analysis was done both in winter and summer, and also using two independent methods: 1) spatial sampling measures in 43 different points of the NRL; and 2) noise mapping using noise levels prediction software. From the comparison of the results of both methods and seasons the following conclusions were reached: 1) an approach to the natural soundscape of NRLP both in winter and summer, 2) the acoustic impact of the road on the NRLP, and 3) the variation of the traffic noise depending on the distance to the road, and its seasonal variation. This study could be to improve the management of the NRLP and to help to preserve the natural soundscape of the reserve.
    Źródło:
    Archives of Acoustics; 2018, 43, 2; 177-185
    0137-5075
    Pojawia się w:
    Archives of Acoustics
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Magnetocaloric Effect in Nanostructured $Pr_2Fe_{17}$ and $Nd_2Fe_{17}$ Synthesized by High-Energy Ball-Milling
    Autorzy:
    Alvarez, P.
    Sánchez-Marcos, J.
    Sanchez Llamazares, J.
    Franco, V.
    Reiffers, M.
    Blanco, J.
    Gorria, P.
    Powiązania:
    https://bibliotekanauki.pl/articles/1534200.pdf
    Data publikacji:
    2010-11
    Wydawca:
    Polska Akademia Nauk. Instytut Fizyki PAN
    Tematy:
    61.05.cp
    75.50.Tt
    75.30.Kz
    Opis:
    Nanocrystalline $Pr_2Fe_{17}$ and $Nd_2Fe_{17}$ powders with rhombohedral $Th_2Zn_{17}$-type crystal structure and average particle sizes around 20 nm have been obtained by high-energy ball milling. While the bulk alloys show a well-defined and sharp drop in the low-field magnetization curve at the Curie temperature, $T_{C}$ = 285 K (Pr) and 335 K (Nd), the ball-milled samples exhibit a substantial broadening of the ferro-to-paramagnetic transition due to a considerable augmentation of the disordered inter-grain boundaries. The latter results in an increase of more than 25% in the values of the full width at half maximum of the temperature dependence of the magnetic entropy change maintaining almost unchanged the relative cooling power.
    Źródło:
    Acta Physica Polonica A; 2010, 118, 5; 867-869
    0587-4246
    1898-794X
    Pojawia się w:
    Acta Physica Polonica A
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Environmental radiological impact by a fertilizer complex in the Ebro river (Spain)
    Wpływ przemysłu produkcji nawozów sztucznych na skażenia promieniotwórcze środowiska naturalnego na przykładzie rzeki Ebro (Hiszpania)
    Autorzy:
    Costa, E.
    Sanchez-Cabeza, J.
    Garcia, J.
    Masque, P.
    Grimaltb, J.
    Powiązania:
    https://bibliotekanauki.pl/articles/340306.pdf
    Data publikacji:
    2004
    Wydawca:
    Główny Instytut Górnictwa
    Tematy:
    skażenie wody
    rzeka Ebro w Hiszpanii
    skażenie radonem
    skażenie torem
    water contamination
    Ebro river in Spain
    radon contamination
    thorium contamination
    Źródło:
    Prace Naukowe GIG. Górnictwo i Środowisko / Główny Instytut Górnictwa; 2004, 1; 33-33
    1643-7608
    Pojawia się w:
    Prace Naukowe GIG. Górnictwo i Środowisko / Główny Instytut Górnictwa
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Biofortification - promising approach to increasing the content of iron and zinc in staple food crops
    Biofortyfikacja - obiecujący sposób zwiększania zawartości żelaza i cynku w podstawowych roślinach uprawnych
    Autorzy:
    Garcia-Banuelos, M.L.
    Sida-Arreola, J.P.
    Sanchez, E.
    Powiązania:
    https://bibliotekanauki.pl/articles/15687.pdf
    Data publikacji:
    2014
    Wydawca:
    Uniwersytet Warmińsko-Mazurski w Olsztynie / Polskie Towarzystwo Magnezologiczne im. Prof. Juliana Aleksandrowicza
    Tematy:
    biofortification
    iron content
    zinc content
    food crop
    metal
    homeostasis
    micronutrient
    malnutrition
    anaemia
    bioavailability
    Opis:
    Micronutrient deficiencies have increased over recent decades due to the general depreciation of the quality of poor people’s diet, both in developed and developing countries. The deficiencies of iron (Fe) and zinc (Zn) are a critical public health problem worldwide, with the negative impact on health, lifespan and productivity. Biofortification is an agricultural approach that can improve human nutrition on a global scale. Agronomic biofortification is considered a short-term and complementary strategy, but economic analyses suggest that genetic biofortification is the most effective strategy for increasing dietary Fe and Zn intakes of vulnerable populations. Enrichment of cereal grains by breeding is a high-priority area of research, and an effective strategy among other approaches, e.g, fortification, supplementation and food diversification. This review discusses the role of Fe and Zn in plant nutrition, the potential strategies for developing Fe and Zn biofortified crops and their importance in human nutrition.
    Obecnie niedobory Fe i Zn stanowią istotny problem dotyczący zdrowia publicznego, są bowiem przyczyną negatywnego wpływu na zdrowie, średnią długość życia i przyrost naturalny. Biofortyfikacja agronomiczna jest to metoda, która może poprawić żywienie człowieka na całym świecie. Analizy ekonomiczne wskazują, że genetyczna biofortyfikacja jest najbardziej skuteczną strategią zwiększenia spożycia Fe i Zn, natomiast agronomiczna biofortifikacja może być podejściem komplementarnym, i to w krótkim czasie. Strategia genetyczna jest obszarem priorytetowym w badaniach zboża, i okazuje się być bardziej skuteczna niż metody fortyfikacji, suplementacji lub zróżnicowania środków spożywczych. W pracy omówiono rolę Fe i Zn w odżywianiu roślin, potencjalne strategie rozwoju upraw z wykorzystaniem biofortyfikacji Fe i Zn oraz znaczenie tych upraw w żywieniu człowieka.
    Źródło:
    Journal of Elementology; 2014, 19, 3
    1644-2296
    Pojawia się w:
    Journal of Elementology
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    A new Eliomys from the Late Miocene of Spain and its implications for the phylogeny of the genus
    Autorzy:
    Mansino, S.
    Garcia-Alix, A.
    Ruiz-Sanchez, F.J.
    Montoya, P.
    Powiązania:
    https://bibliotekanauki.pl/articles/21189.pdf
    Data publikacji:
    2015
    Wydawca:
    Polska Akademia Nauk. Instytut Paleobiologii PAN
    Opis:
    In this paper, we describe a previously unknown species of the glirid Eliomys from the Late Miocene and Early Pliocene Cabriel, Alcoy and Granada basins of southeastern Spain. Eliomys yevesi sp. nov. is characterized by its relative small size, narrow lingual wall and common presence of two centrolophs in the upper molars, and well-developed centrol-ophids in the lower molars. The new species is the probable ancestor of E. intermedius, which in turn represents the ancestor of the extant E. quercinus. According to its morphologic and biometric features, the origin of E. yevesi sp. nov. is likely to be found in some population of E. truci from the Late Miocene. Based on these affinities, we propose the lineage E. truci-E. yevesi sp. nov.-E. intermedius-E. quercinus, in which there is a trend towards the development of centrolophs, as well as the reduction of accessory crests.
    Źródło:
    Acta Palaeontologica Polonica; 2015, 60, 3
    0567-7920
    Pojawia się w:
    Acta Palaeontologica Polonica
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    New reticulosan sponges from the middle Cambrian of Sonora, Mexico
    Autorzy:
    BERESI, MATILDE SYLVIA
    BOTTING, JOSEPH P.
    PALAFOX, JUAN J.
    BUITRÓN SÁNCHEZ, BLANCA E.
    Powiązania:
    https://bibliotekanauki.pl/articles/945978.pdf
    Data publikacji:
    2017
    Wydawca:
    Polska Akademia Nauk. Instytut Paleobiologii PAN
    Tematy:
    porifera
    hexactinellida
    reticulosa
    burgess shale-type fauna
    biogeography
    cambrian
    mexico
    Opis:
    A small assemblage of extremely well-preserved fragments of new sponges has been discovered in calcipelites of the middle Cambrian El Mogallón Formation in the Cerro El Mogallón section, near Arivechi in eastern Sonora, Mexico. The assemblage includes two new reticulosan species referred to Ratcliffespongia arivechensis sp. nov. and Valospongia sonorensis sp. nov., combined with disarticulated remains assigned to Kiwetinokia and additional, currently unidentifiable taxa. The new species represent the first records of these Cambrian genera from Mexico, although they are widely distributed at low latitudes, being previously best known from Utah but extending through Laurentia and South China. This middle Cambrian fauna indicates that there was considerable continuity of the deeper-water hexactinellid sponges between the warm peri-platform of Laurentia and the peri-continental Cambrian platform of Sonora. The new material supports the impression of extremely wide distribution of Cambrian sponge genera, with local diversification at species level within regions, in contrast to much greater generic-level endemism during the Ordovician Period.
    Źródło:
    Acta Palaeontologica Polonica; 2017, 62, 4; 691-703
    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:
    New concrete additive by chemical recycling of PET
    Autorzy:
    Mendivil-Escalante, J M
    Almaral-Sánchez, J L
    Gómez-Soberón, J M
    Arredondo-Rea, S P
    Corral-Higuera, R
    Castro-Beltrán, A
    Cabrera-Covarrubias, F G
    Powiązania:
    https://bibliotekanauki.pl/articles/102237.pdf
    Data publikacji:
    2014
    Wydawca:
    Stowarzyszenie Inżynierów i Techników Mechaników Polskich
    Tematy:
    concrete admixture
    glycolysis
    polymeric resins
    polyethylene terephthalate
    Opis:
    Due to the problem that represents the accelerated production of waste from the consumption of polyethylene terephthalate (PET), it becomes necessary to look for alternative solutions; chemical recycling is a suitable method for conversion into a material with potential application in concrete additive, such as unsaturated polyester resins; with the above improvements and conservation of non-renewable raw materials can reduce the environmental impact. This investigation was focused on obtaining the synthesis of a polymeric resin by the method of glycolysis, and their characterization by Infrared Spectroscopy (FT-IR); the results show that the recycled materials (PET and its processing) are similar to reagents made from primary materials so that it is considered feasible to use in the intended application.
    Źródło:
    Advances in Science and Technology. Research Journal; 2014, 8, 23; 1-5
    2299-8624
    Pojawia się w:
    Advances in Science and Technology. Research Journal
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    TEM Study of the Structural Properties of Nanowires Based on Cd, Zn, Te grown by MBE on Silicon Substrates
    Autorzy:
    Kaleta, A.
    Kret, S.
    Sanchez, A.
    Bilska, M.
    Kurowska, B.
    Szczepańska, A.
    Płachta, J.
    Wojnar, P.
    Wojciechowski, T.
    Powiązania:
    https://bibliotekanauki.pl/articles/1032910.pdf
    Data publikacji:
    2017-05
    Wydawca:
    Polska Akademia Nauk. Instytut Fizyki PAN
    Tematy:
    81.05.Dz
    81.07.-b
    61.46.-w
    62.23.Hj
    81.07.Gf
    61.46.Km
    78.67.Uh
    07.10.Pz
    68.35.Gy
    68.37.Lp
    68.37.Og
    68.37.Ma
    Opis:
    In this work we report on the atomic structures, elemental distribution, defects and dislocations of three types of semiconductor nanowires: ZnTe, CdTe, and complex ZnTe/(Cd,Zn)Te core/shell hetero-nanowires grown by a molecular beam epitaxy on (111) Si substrate using a vapor-liquid-solid mechanism. The structural properties and the chemical gradients were measured by transmission electron microscopy methods. The nanowires reveal mainly sphalerite structure, however wurtzite nanowires were also observed.
    Źródło:
    Acta Physica Polonica A; 2017, 131, 5; 1399-1405
    0587-4246
    1898-794X
    Pojawia się w:
    Acta Physica Polonica A
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Cold Atomic Gases in Optical Lattices with Disorder
    Autorzy:
    Schulte, T.
    Drenkelforth, S.
    Kruse, J.
    Ertmer, W.
    Arlt, J. J.
    Kantian, A.
    Sanchez-Palencia, L.
    Santos, L.
    Sanpera, A.
    Sacha, K.
    Zoller, P.
    Lewenstein, M.
    Zakrzewski, J.
    Powiązania:
    https://bibliotekanauki.pl/articles/2044614.pdf
    Data publikacji:
    2006-01
    Wydawca:
    Polska Akademia Nauk. Instytut Fizyki PAN
    Tematy:
    03.75.Kk
    03.75.Lm
    05.30.Jp
    64.60.Cn
    Opis:
    Cold atomic gases placed in optical lattices enable studies of simple condensed matter theory models with parameters that may be tuned relatively easily. When the optical potential is randomized (e.g. using laser speckle to create a random intensity distribution) one may be able to observe Anderson localization of matter waves for non-interacting bosons, the so-called Bose glass in the presence of interactions, as well as the Fermi glass or quantum spin glass for mixtures of fermions and bosons.
    Źródło:
    Acta Physica Polonica A; 2006, 109, 1; 89-99
    0587-4246
    1898-794X
    Pojawia się w:
    Acta Physica Polonica A
    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 1-14 z 14

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