Autor: Lopez, J. M. - Katalog OPAC zbiorów

Skocz do pozycji: 1.

Tytuł:: A Distributed Decision-Support System for Virtual Prototyping
Autorzy:: Tirpak, T. M.
Lach, L. E.
Xiao, W.
Lopez, J. M.
Powiązania:: https://bibliotekanauki.pl/articles/375959.pdf
Data publikacji:: 2007
Wydawca:: Akademia Górniczo-Hutnicza im. Stanisława Staszica w Krakowie. Wydawnictwo AGH
Tematy:: Distributed Decision-Support
virtual prototyping
CAE
Opis:: Virtual Prototyping (VP) is a data-driven design process that promotes both knowledge reuse and innovation. High-profile applications in the automotive and aerospace industries have demonstrated its potential to significantly reduce prototype cycles, time to market, and total product cost. This paper addresses VP as a specialized application of Decision-Support Systems, and discusses common requirements for engineering design tools, as well as requirements specific to the design of electronic products, such as mobile phones. Motorola Labs' test bed for VP is introduced in terms of its open, agent-based architecture utilizing Java CORBA. One of the key principles of the VP System is the reuse of expert knowledge across multiple engineering domains. This is highlighted via several use cases, showing that the system can function not only as an Intranet-accessible repository of model services but also as an integral part of decision-making within the native CAD environment.
Źródło:: Decision Making in Manufacturing and Services; 2007, 1, 1-2; 137-152
1896-8325
2300-7087
Pojawia się w:: Decision Making in Manufacturing and Services
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 2.

Tytuł:: Effects of spermidine on germination of Salix spp. after storage under controlled conditions
Autorzy:: Wawrzyniak, M.K.
Ley-Lopez, J.M.
Kijowska-Oberc, J.
Chmielarz, P.
Ratajczak, E.
Powiązania:: https://bibliotekanauki.pl/articles/2130180.pdf
Data publikacji:: 2022
Wydawca:: Polska Akademia Nauk. Instytut Dendrologii PAN
Tematy:: hydrogen peroxide
cryopreservation
spermidine
Salix
antioxidant
seed storage
Opis:: Willows produce fast germinating and short-lived seeds, difficult to store in the long-term under controlled conditions. The aim of this study was to examine the feasibility of storage of three Salix spp. at controlled temperatures (3°, −10°, −196 °C). We also analyzed the effect of spermidine (Spd) as an antioxidant factor in desiccated seeds. Collected seeds were either desiccated or hydrated to obtain 10 levels of moisture content (between app. 4% and 2%) and subjected to storage at temperatures 3°, −10°, or −196 °C (liquid nitrogen; LN). After two months, seeds were germinated on the light at 20 °C. Seeds desiccated below a safe range of moisture content were further tested and germinated on filter paper with additions of 0.25 mM Spd solution. After 7 days seedlings were examined for hydrogen peroxide content (H2O2) and total antioxidant capacity (TAC). Fresh seeds of three Salix species: Persian willow (S. aegyptiaca L.), heartleaf willow (S. cordata Michx.) and crack willow (S. ×fragilis L.) were successfully stored at temperature −10° and −196 °C for two months. After cryopreservation seed of S. aegyptiaca, S. cordata, and S. ×fragilis germinated without viability loss in moisture content ranging from 4.4–15.9%, 6.4–18.5%, and 7.1–11.5% respectively. The addition of Spd during germination of desiccated seed did not affect germination capacity. However, seedlings of S. aegyptiaca had lower hydrogen peroxide content in comparison with control (germination on water). Seedlings of S. cordata showed an increase in hydrogen peroxide content in control after storing in LN. In seedlings of Crack willow Spd increased hydrogen peroxide content. Seeds of tested species differ in response to storage conditions. Salix seeds can be stored successfully for two months at −10° or −196 °C without losing viability in the safe range of moisture content. Storing at 3 °C can be used for storage in the narrower range of seeds’ moisture content, however, seedlings stored at this temperature produce a higher level of reactive oxygen species. Germinating seeds in Spd did not increase their germination, however in S. aegyptiaca and S. cordata decreased hydrogen peroxide content.
Źródło:: Dendrobiology; 2022, 87; 137-148
1641-1307
Pojawia się w:: Dendrobiology
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 3.

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

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Skocz do pozycji: 4.

Tytuł:: Effects of Doping on the Structural Distortion of $La_{0.7}Dy_{0.3}Mn_{1-x}Zn_xO_3$
Autorzy:: López, J.
Ríos, M.
Mendoza, G.
Powiązania:: https://bibliotekanauki.pl/articles/1398317.pdf
Data publikacji:: 2017-05
Wydawca:: Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:: 75.47.Lx
61.50.-f
Opis:: Structural properties were studied in the orthorhombic perovskite $La_{0.7}Dy_{0.3}Mn_{1-x}Zn_{x}O_3$, synthesized in the range 0 ≤ x ≤ 0.4. X-ray diffraction data, refined by the Rietveld analysis, shows for x < 0.1 the presence of stretched octahedra on the Mn-O plane, and, for x > 0.1, the existence of elongated octahedra along the c axis. Increased Zn doping causes a direct structural effect: one Zn atom distorts four neighboring MnO₆ octahedra on the Mn-O plane. It was observed that the unit cell volume containing Dy decreases as x increases, whereas the unit cell volume containing La increases as x decreases.
Źródło:: Acta Physica Polonica A; 2017, 131, 5; 1254-1255
0587-4246
1898-794X
Pojawia się w:: Acta Physica Polonica A
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 5.

Tytuł:: Early steps in the radiation of notoungulate mammals in southern South America: A new henricosborniid from the Eocene of Patagonia
Autorzy:: Bauza, N.
Gelfo, J.N.
Lopez, G.M.
Powiązania:: https://bibliotekanauki.pl/articles/22004.pdf
Data publikacji:: 2019
Wydawca:: Polska Akademia Nauk. Instytut Paleobiologii PAN
Opis:: Here we describe a new notoungulate mammal from the early Eocene (Itaboraian SALMA) of Chubut, Argentinian Patagonia, from the localities of Las Flores and Las Violetas Farm, represented by fragments of maxilla and isolated teeth. The specimens were found in the Las Flores Formation, Río Chico Group, and assigned to the Henricosborniidae, a primitive family within the order Notoungulata. Orome deepi gen. et. sp. nov. differs from other henricosborniids in a less developed metacone column in the upper molars, a larger metaloph in the third upper molar and a larger mean size. The morphometric analysis does not show any difference between the individuals of the two studied localities. The new addition to the henricosborniid diversity in Patagonia allows to provide a better understanding of the early radiation of notoungulates in South America.
Źródło:: Acta Palaeontologica Polonica; 2019, 64, 3
0567-7920
Pojawia się w:: Acta Palaeontologica Polonica
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 6.

Tytuł:: Apport des techniques EXAFS et apparentées a la determination de lordre local: application a la tribologie
Autorzy:: Lopez, J.
Le Bossé, J. C.
Hansali, G.
Belin, M.
Martin, J. M.
Powiązania:: https://bibliotekanauki.pl/articles/1929260.pdf
Data publikacji:: 1993-05
Wydawca:: Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:: 61.10.Lx
Opis:: CONTRIBUTION OF EXAFS-LIKE TECHNIQUES TO THE DETERMINATION OF LOCAL ORDER: APPLICATION TO TRIBOLOGY: The determination of local order at atomic scale becomes more and more fundamental for understanding superficial phenomena such as tribology and catalysis. Among a few techniques available in this field, we are only concerned with the EXAFS-like ones (EXAFS, SEXAFS, EXELFS, SEELFS, etc.). The difficulties appearing all along the numerical treatment of such spectra are carefully analysed and a methodology is proposed in view to obtain reliable radial distribution functions. Some applications of these techniques are presented in two fields connected with tribology: friction induced amorphisation in high vacuum and characterization of interfacial solid bodies created during a wear process including an antiwear additive.
Źródło:: Acta Physica Polonica A; 1993, 83, 5; 551-566
0587-4246
1898-794X
Pojawia się w:: Acta Physica Polonica A
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 7.

Tytuł:: Analytics and data science applied to the trajectory outlier detection
Autorzy:: Lopez, Alexis J.
Quintero, Perfecto M.
Hernandez, Ana K.
Powiązania:: https://bibliotekanauki.pl/articles/117731.pdf
Data publikacji:: 2020
Wydawca:: Polskie Towarzystwo Promocji Wiedzy
Tematy:: spatial-temporal data
trajectory outlier detection
trajectory clustering
dane przestrzenno-czasowe
wykrywanie wartości odstających trajektorii
grupowanie trajektorii
Opis:: Nowadays, logistics for transportation and distribution of merchandise are a key element to increase the competitiveness of companies. However, the election of alternative routes outside the panned routes causes the logistic companies to provide a poor-quality service, with units that endanger the appropriate deliver of merchandise and impacting negatively the way in which the supply chain works. This paper aims to develop a module that allows the processing, analysis and deployment of satellite information oriented to the pattern analysis, to find anomalies in the paths of the operators by implementing the algorithm TODS, to be able to help in the decision making. The experimental results show that the algorithm detects optimally the abnormal routes using historical data as a base.
Źródło:: Applied Computer Science; 2020, 16, 2; 5-17
1895-3735
Pojawia się w:: Applied Computer Science
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 8.

Tytuł:: Recurrent Constructional Pattern of the Crustacean Burrow Sinusichnus sinuosus from the Paleogene and Neogene of Spain
Autorzy:: Belaustegui, Z.
de Gibert, J.M.
Lopez-Blanco, M.
Bajo, I.
Powiązania:: https://bibliotekanauki.pl/articles/946033.pdf
Data publikacji:: 2014
Wydawca:: Polska Akademia Nauk. Instytut Paleobiologii PAN
Tematy:: decapoda
sinusichnus sinuosus
bioturbation
eocene
miocene
pliocene
Opis:: New occurrences of Sinusichnus sinuosus described in the Cenozoic of Spain evidence the almost continuous fossil record of this ichnospecies from the Upper Cretaceous to the Lower Pliocene. Morphological and size features of these highly regular sinusoidal burrows have been analyzed, showing a very recurrent constructional pattern through time. Such features are also constant along the ontogeny of the producer. The large number of similarities that this ichnogenus shares with fodinichnial burrow systems, such as Thalassinoides, Ophiomorpha, or Spongeliomorpha, point to a crustacean authorship. Since this sinusoidal architecture is also common among some graphoglyptids, other behavioral strategies are discussed. The ichnogenus Sinusichnus occurs commonly in shallow marine environments, in particular to deltaic depositional settings.
Źródło:: Acta Palaeontologica Polonica; 2014, 59, 2; 461-474
0567-7920
Pojawia się w:: Acta Palaeontologica Polonica
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 9.

Tytuł:: Modelling the effects of land use changes on runoff and soil erosion in two Mediterranean catchments with active gullies (South of Spain)
Autorzy:: Martínez-Murillo, J. F.
López-Vicente, M.
Poesen, J.
Ruiz-Sinoga, J. D.
Powiązania:: https://bibliotekanauki.pl/articles/294673.pdf
Data publikacji:: 2011
Wydawca:: Stowarzyszenie Geomorfologów Polskich
Tematy:: gully erosion
land use
RMMF
model
runoff
soil erosion
Opis:: This study investigates the effects of land use changes between 1956 and 2006 on runoff and soil erosion in two Mediterranean catchments (South Spain)with active gullies, by applying the RMMF Model and by comparing the erosion channel network from both years. Results underline the complexity of soil erosion dynamics in gullied catchments where a general increase in soil erosion due to land use changes can occur simultaneously with a decrease in erosion rates within the gully system.
Źródło:: Landform Analysis; 2011, 17; 99-104
1429-799X
Pojawia się w:: Landform Analysis
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 10.

Tytuł:: Radiocatalytic degradation of dissolved organic compounds in wastewater
Autorzy:: Jiménez-Becerril, J.
Moreno-López, A.
Jiménez-Reyes, M.
Powiązania:: https://bibliotekanauki.pl/articles/148022.pdf
Data publikacji:: 2016
Wydawca:: Instytut Chemii i Techniki Jądrowej
Tematy:: wastewater
dissolved organic carbon
radiocatalysis
Opis:: Wastewater containing a high concentration of organic substances was exposed to gamma radiolysis in the presence and absence of a catalyst (TiO2); radiolysis and radiocatalysis were performed by means of continuous and discontinuous irradiation. Dissolved organic carbon (DOC) was the parameter used to estimate the concentration of organic compounds without interference by the high mineral content. The data was well fitted to the pseudo-first-order kinetic model of Langmuir-Hinshelwood. From a [DOC]0 = 140 ± 7 mg/L, the higher DOC degradation (74%) and apparent rate constant (Kapp = 0.083 h−1) were found using discontinuous radiocatalysis. This process could be an alternative method of treatment of industrial or municipal wastewater.
Źródło:: Nukleonika; 2016, 61, 4; 473-476
0029-5922
1508-5791
Pojawia się w:: Nukleonika
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 11.

Tytuł:: Magnesium biodegradable implants coated with polylactic acid
Autorzy:: Munoz, M.
Rams, J.
Lopez, A.
Matykina, E.
Torres, B.
Powiązania:: https://bibliotekanauki.pl/articles/284077.pdf
Data publikacji:: 2017
Wydawca:: Akademia Górniczo-Hutnicza im. Stanisława Staszica w Krakowie. Polskie Towarzystwo Biominerałów
Tematy:: implants
biodegradation
magnesium alloys
Źródło:: Engineering of Biomaterials; 2017, 20, no. 143 spec. iss.; 28
1429-7248
Pojawia się w:: Engineering of Biomaterials
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 12.

Tytuł:: Determination of the friction coefficients of chestnut (Castanea sativa Mill.) sawn timber
Autorzy:: Villar-Garcia, J.R.
Vidal-Lopez, P.
Corbacho, A.J.
Moya, M.
Powiązania:: https://bibliotekanauki.pl/articles/2082657.pdf
Data publikacji:: 2020
Wydawca:: Polska Akademia Nauk. Instytut Agrofizyki PAN
Tematy:: wood
mechanical properties
friction coefficient
direct shear test
Opis:: This work provides the values of both the static and the kinetic friction coefficients for chestnut (Castanea sativa Mill.) of Spanish origin. Knowledge concerning these coefficients has its main application in the study of agroindustrial structures and machinery with timber members in contact. This determination was developed taking into account the timber anisotropy to establish surfaces and directions of slipping. A modified direct shear test device was used to conduct the tests and reproduce the tribological system. This procedure was functional and reliable and considered suitable for standardizing the friction measurement between timber surfaces, since this device is widely distributed in geotechnical and materials laboratories and the European codes do not specify a procedure or device to carry it out. The average values obtained were 0.46 for the static coefficient and 0.33 for the kinetic one, without considering the surfaces and directions of slipping. These values ranged between 0.36 and 0.55 for the static friction coefficient and between 0.28 and 0.39 for the kinetic friction coefficient depending on the direction considered and also taking into account the anisotropy of the timber. A good correlation was obtained between both coefficients, thus allowing for the estimation of the kinetic coefficient from the static one.
Źródło:: International Agrophysics; 2020, 34, 1; 65-77
0236-8722
Pojawia się w:: International Agrophysics
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 13.

Tytuł:: Spacetimes embedded into E6
Autorzy:: Montiel-Pérez, J. Yaljá
Caltenco, J. H.
Linares y M., R.
López-Bonilla, J.
Powiązania:: https://bibliotekanauki.pl/articles/1164540.pdf
Data publikacji:: 2018
Wydawca:: Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
Tematy:: E6
Embedding of Riemannian 4-spaces
Local and isometric embedding
Opis:: We study the local and isometric embedding of Riemannian spacetimes into the pseudo-Euclidean flat E6. Our main purpose is to pinpoint the known results with the corresponding references, and to indicate the main routes and connections from here to the still open problems in the field. Some new results are also included in order to round off our discussion.
Źródło:: World Scientific News; 2018, 107; 31-45
2392-2192
Pojawia się w:: World Scientific News
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 14.

Tytuł:: A nonlinear model for the elastoplastic analysis of 2D frames accounting for damage
Nieliniowy model do sprężysto-plastycznej analizy problemu uszkodzeń dwuwymiarowych ram
Autorzy:: Lorenzana, A.
López-Reyes, P. M.
Chica, E.
Teran, J. M. G.
Cacho, M.
Powiązania:: https://bibliotekanauki.pl/articles/281011.pdf
Data publikacji:: 2011
Wydawca:: Polskie Towarzystwo Mechaniki Teoretycznej i Stosowanej
Tematy:: plastic methods
structural analysis
material nonlinearities
elastoplastic stiffness matrix
Bonora damage model
Opis:: A simple and efficient procedure for non-linear analysis of frames is presented, under the hypothesis that the non-linear effects, if appear, are concentrated in the beam-ends.We consider a damage model based on Continuum Damage Mechanics, but affecting the cross-section as a whole. The elastoplastic behaviour is included formulating the tangent elastoplastic stiffness matrix in such a way that the yield function, in terms of internal forces (axial, shear and bending moment), is affected by the damage in each plastic cross-section. After the verification of the model, an example of application is solved for different assumptions on the yield function (depending on the internal forces considered) with the damage being taken into account or disregarded. The differences on the collapse load, for each case, are shown and some conclusions obtained, among them that the method can evaluate in a more accurate way the load that causes the collapse of frames under increasing loading, considering a fully plastic non-linear analysis.
W pracy zaprezentowano prostą i skuteczną metodę nieliniowej analizy dwuwymiarowych ram przy założeniu hipotezy, że efekty nieliniowe, jeśli występują, są skoncentrowane na końcach belek tworzących układ ramy. Rozważono kontynualny model procesu zniszczenia obejmujący przekrój belki jako całość. Właściwości elasto-sprężyste materiału ujęto poprzez zdefiniowanie macierzy stycznej sztywności sprężysto-plastycznej w taki sposób, że funkcja uplastycznienia wyrażona w kategoriach obciążeń wewnętrznych (sił osiowych, tnących oraz momentu gnącego) zależy od stanu zniszczenia w każdym uplastycznionym przekroju. Po zweryfikowaniu modelu, rozwiązano przykład zastosowania analizy dla różnych założeń narzuconych na funkcję uplastycznienia (w zależności od wziętych pod uwagę obciążeń wewnętrznych) z uwzględnieniem zniszczenia lub bez. Dla każdego przypadku pokazano różnice w wartościach obciążenia zewnętrznego prowadzącego do wyboczenia ramy oraz sformułowano wnioski. Wykazano, że przedstawiona metoda nieliniowej analizy uplastycznienia pozwala na bardziej precyzyjne określenie krytycznych obciążeń prowadzących do zniszczenia konstrukcji.
Źródło:: Journal of Theoretical and Applied Mechanics; 2011, 49, 2; 515-529
1429-2955
Pojawia się w:: Journal of Theoretical and Applied Mechanics
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 15.

Tytuł:: Exact and heuristic approaches to solve the Internet shopping optimization problem with delivery costs
Autorzy:: Lopez-Loces, M. C.
Musial, J.
Pecero, J. E.
Fraire-Huacuja, H. J.
Blazewicz, J.
Bouvry, P.
Powiązania:: https://bibliotekanauki.pl/articles/330508.pdf
Data publikacji:: 2016
Wydawca:: Uniwersytet Zielonogórski. Oficyna Wydawnicza
Tematy:: internet shopping optimization
integer linear programming
cellular processing algorithm
heuristic algorithms
optimization in e-commerce
zakupy internetowe
programowanie liniowe
algorytm heurystyczny
handel elektroniczny
Opis:: Internet shopping has been one of the most common online activities, carried out by millions of users every day. As the number of available offers grows, the difficulty in getting the best one among all the shops increases as well. In this paper we propose an integer linear programming (ILP) model and two heuristic solutions, the MinMin algorithm and the cellular processing algorithm, to tackle the Internet shopping optimization problem with delivery costs. The obtained results improve those achieved by the state-of-the-art heuristics, and for small real case scenarios ILP delivers exact solutions in a reasonable amount of time.
Źródło:: International Journal of Applied Mathematics and Computer Science; 2016, 26, 2; 391-406
1641-876X
2083-8492
Pojawia się w:: International Journal of Applied Mathematics and Computer Science
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 16.

Tytuł:: The Importance of Internet And Online Social Networks in the Spanish Hotel Sector
Autorzy:: Infante-Moro, A.
Infante-Moro, J-C.
Martínez-López, F-J.
García-Ordaz, M.
Powiązania:: https://bibliotekanauki.pl/articles/118135.pdf
Data publikacji:: 2016
Wydawca:: Polskie Towarzystwo Promocji Wiedzy
Tematy:: hotels
online social networks
internet
e-commerce
cross-sectional study
Opis:: This paper is a cross-sectional study on the use of Internet and Online Social Networks in the Spanish hotel sector compared to Spanish companies in other sectors. The conclusions from this extensive survey are that the use of online social networks is more important and is more developed in the hotel sector than in Spanish companies in general. However, although it gives considerable importance to online social networks, the hotel sector needs to revise its rules of usage. The use of new tools such as e-commerce to sell the hotel stays must increase, and marketing efforts should be geared more towards online social networks because the hotel sector is currently losing ground in a market that generates more and more potential clients and sales by the day.
Źródło:: Applied Computer Science; 2016, 12, 1; 75-86
1895-3735
Pojawia się w:: Applied Computer Science
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 17.

Tytuł:: Using tags in an AIML-based chatterbot to improve its knowledge
Autorzy:: Mikic, F. A.
Burguillo, J. C.
Peleteiro, A.
Rey-Lopez, M.
Powiązania:: https://bibliotekanauki.pl/articles/305303.pdf
Data publikacji:: 2012
Wydawca:: Akademia Górniczo-Hutnicza im. Stanisława Staszica w Krakowie. Wydawnictwo AGH
Tematy:: AIML
chatterbots
folksonomies
tagging
natural language
Opis:: Nowadays, it is common to find on the Internet different conversational robots which interact with users simulating a natural language conversation. Among them, we can emphasize the chatterbots based on AIML language. In this paper we present an AIML based chatterbot that shows as its main contribution the use of tags and folksonomies. Thanks to its use, we can generate a context for each conversation, being able to maintain a state for each user in the system, and improving the adaptation capabilities of the bot.
Źródło:: Computer Science; 2012, 13 (2); 123-133
1508-2806
2300-7036
Pojawia się w:: Computer Science
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 18.

Tytuł:: Characterization of sub-channel based Málaga atmospheric optical links with real β parameter
Autorzy:: López-González, F. J.
Jurado-Navas, A.
Garrido-Balsells, J. M.
Castillo-Vázquez, M.
Puerta-Notario, A.
Powiązania:: https://bibliotekanauki.pl/articles/174807.pdf
Data publikacji:: 2017
Wydawca:: Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej
Tematy:: Malaga distribution
generalized-K distribution
atmospheric optical communications
atmospheric propagation
atmospheric turbulence
scintillation
Opis:: A generalization of the Málaga atmospheric optical communications links treated as a finite number of generalized-K distributed sub-channels is analyzed in terms of outage probability and outage rate when its β parameter belongs to the set of real numbers. To the best of the author’s knowledge, this is the first time that β ∈ ℜ is considered. The new analytical expressions derived in this paper lead to a new physical and more realistic interpretation of atmospheric optical links, especially in terms of performance.
Źródło:: Optica Applicata; 2017, 47, 4; 545-556
0078-5466
1899-7015
Pojawia się w:: Optica Applicata
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 19.

Tytuł:: Support to maritime and inland waterways service providers for the transmission of EGNOS Corrections via IALA beacons and AIS/VDES stations
Autorzy:: López, M.
Cano, M.
Martínez, R.
Álvarez, C.
Tavira, L.
Morán, J.
Antón, V.
Vázquez, J.
Powiązania:: https://bibliotekanauki.pl/articles/117535.pdf
Data publikacji:: 2019
Wydawca:: Uniwersytet Morski w Gdyni. Wydział Nawigacyjny
Tematy:: inland waterways
IALA beacons
AIS stations
VDES stations
EGNOS
EGNOS corrections
AIS Service Manager (ASM)
Virtual Reference Station (VRS)
Opis:: The use of SBAS corrections for navigation, in both coastal waters and inland waterways, has already brought the attention of many European authorities, which are interested in its potential to complement/replace their DGPS radio beacon networks. The European GNSS Agency (GSA) has an active long-term trajectory working to foster the EGNOS adoption in maritime through the launch of several actions whose results will pave the way for the provision of maritime EGNOS services. In this line, GSA awarded the consortium ALG-Indra, ESSP and Alberding with the Specific Contract GSA/OP/07/13/SC24 ‘Support to Maritime Service Providers for the transmission of EGNOS corrections via IALA beacons and AIS/VDES stations’. The main objective of this Specific Contract is to demonstrate the operational performance of the transmission of EGNOS corrections converted to Differential GPS corrections over the existing transmission infrastructure (AIS base stations/IALA beacons) in the Maritime and Inland Waterways (IWW) domains, while providing a detailed cost benefit analysis of the solutions proposed. This service may complement the current GNSS augmentation services exploiting synergies and benefiting from the current infrastructure and standards, facilitating the adoption of EGNOS by maritime and inland waterways authorities. Furthermore, the service has no impact at user level since the DGNSS corrections are transmitted over the existing infrastructure, in the same format and implementing the same integrity mechanisms required for traditional IALA beacons ([1]). This project will allow the maritime and IWW service providers to have a clear understanding about the technical, operational and economic feasibility of the transmission of EGNOS corrections via IALA beacons and AIS/VDES stations.
Źródło:: TransNav : International Journal on Marine Navigation and Safety of Sea Transportation; 2019, 13, 1; 45-52
2083-6473
2083-6481
Pojawia się w:: TransNav : International Journal on Marine Navigation and Safety of Sea Transportation
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 20.

Tytuł:: Identification of Gastric Cancer from Speckle Patterns
Autorzy:: Andrade-Eraso, C.
Patiño-Velasco, M.
Vásquez-López, J.
León, J.
Bolaños-Pantoja, G.
Trivi, M.
Powiązania:: https://bibliotekanauki.pl/articles/1490749.pdf
Data publikacji:: 2012-01
Wydawca:: Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:: 78.68.+m
42.87.-d
87.50.W-
Opis:: Speckle technique is based on the light intensity distribution randomly formed when a laser light is reflected on a rough surface, creating a pattern of illuminated grains (constructively) and dark (destructive) on scales of 1 μm. When the samples are displaced or deformed, the speckle pattern is altered. In this paper we present speckle patterns obtained from samples of gastric mucosa that is physically altered for the carcinogenesis process. Biopsies were studied with different diagnoses and were grouped according to the characteristics of speckle patterns. Speckle patterns were obtained by illuminating the samples with green laser. Morphological parameters of the speckle patterns reveal existence of 3 descriptors: the average grain size, hydraulic radius and the radio of the Weddel disc, which showed a high, intermediate and low value. The comparison shows agreement between the histopathological diagnosis and the values obtained by the speckle technique, making this technique emerge as a new classification system for quantitative diagnosis of precancerous lesions.
Źródło:: Acta Physica Polonica A; 2012, 121, 1; 62-64
0587-4246
1898-794X
Pojawia się w:: Acta Physica Polonica A
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 21.

Tytuł:: Antioxidant activity and cytotoxic effect of Chilean Buddleja globosa (matico) and Ribes magellanicum (zarzaparrilla) flower extracts
Autorzy:: Zamorano-Aguilar, P.
Morales, M.
Rivillas, Y.
López, J.
Rojano, B.A.
Powiązania:: https://bibliotekanauki.pl/articles/12989165.pdf
Data publikacji:: 2020
Wydawca:: Uniwersytet Przyrodniczy w Lublinie. Wydawnictwo Uniwersytetu Przyrodniczego w Lublinie
Źródło:: Acta Scientiarum Polonorum. Hortorum Cultus; 2020, 19, 6; 59-70
1644-0692
Pojawia się w:: Acta Scientiarum Polonorum. Hortorum Cultus
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 22.

Tytuł:: Algorithms solving the Internet shopping optimization problem with price discounts
Autorzy:: Musial, J.
Pecero, J. E.
Lopez-Loces, M. C.
Fraire-Huacuja, H. J.
Bouvry, P.
Blazewicz, J.
Powiązania:: https://bibliotekanauki.pl/articles/200209.pdf
Data publikacji:: 2016
Wydawca:: Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:: e-commerce
Internet shopping
applications of operations research
approximations
algorithms
heuristics
combinatorial optimization
zakupy przez Internet
wnioski z badań operacyjnych
aproksymacje
algorytmy
heurystyki
optymalizacja kombinatoryczna
Opis:: The Internet shopping optimization problem arises when a customer aims to purchase a list of goods from a set of web-stores with a minimum total cost. This problem is NP-hard in the strong sense. We are interested in solving the Internet shopping optimization problem with additional delivery costs associated to the web-stores where the goods are bought. It is of interest to extend the model including price discounts of goods. The aim of this paper is to present a set of optimization algorithms to solve the problem. Our purpose is to find a compromise solution between computational time and results close to the optimum value. The performance of the set of algorithms is evaluated through simulations using real world data collected from 32 web-stores. The quality of the results provided by the set of algorithms is compared to the optimal solutions for small-size instances of the problem. The optimization algorithms are also evaluated regarding scalability when the size of the instances increases. The set of results revealed that the algorithms are able to compute good quality solutions close to the optimum in a reasonable time with very good scalability demonstrating their practicability.
Źródło:: Bulletin of the Polish Academy of Sciences. Technical Sciences; 2016, 64, 3; 505-516
0239-7528
Pojawia się w:: Bulletin of the Polish Academy of Sciences. Technical Sciences
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 23.

Tytuł:: Measurement of biological diversity of arthropods and respiration in soils managed under time-controlled and set-stocked grazing practices in central-west New South Wales, Australia
Badania różnorodności biologicznej stawonogów i oddychanie w glebach o odmiennych systemach wypasania w centralno-zachodniej Nowej Południowej Walii, Australia
Autorzy:: Moulin, M.
Lopez, J.
Raman, A.
Hodgkins, D.
Adams, A.
Mannix, S.
Powiązania:: https://bibliotekanauki.pl/articles/906653.pdf
Data publikacji:: 2012
Wydawca:: Uniwersytet Marii Curie-Skłodowskiej. Wydawnictwo Uniwersytetu Marii Curie-Skłodowskiej
Opis:: In this study we compare the effects of two contrasting grazing regimes (time-controlled grazing (TCG) vs set-stocked grazing (SSG)) on selected parameters of soil biological health. The purpose of the study was to evaluate these soil parameters as potential indicators of soil health and thence sustainable soil management. Two parameters, viz., arthropod biological diversity and soil respiration were chosen as reliable indicators of soil health. Samples of pasture cover, arthropod populations, and soil from varied depths were obtained in spring (September-November 2010) and autumn (March-May 2011). Results from the autumn showed a strong effect of time-controlled grazing with increased arthropod abundance and enhanced soil biological respiration while in spring the differences were not significant. It was concluded that a change to short-duration rotational grazing can be beneficial to soil biological health in the longer term and that the measurement of arthropods present in the litter and topsoil can be a simple yet effective indicator of the impact of grazing regime on soil health.
Źródło:: Polish Journal of Soil Science; 2012, 45, 1
0079-2985
Pojawia się w:: Polish Journal of Soil Science
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 24.

Tytuł:: Environmental distribution of post-Palaeozoic crinoids from the Iberian and south-Pyrenean basins, NE Spain
Autorzy:: Zamora, S.
Aurell, M.
Veitch, M.
Saulsbury, J.
Lopez-Horgue, M.A.
Ferratges, F.A.
Arz, J.A.
Baumiller, T.K.
Powiązania:: https://bibliotekanauki.pl/articles/22586.pdf
Data publikacji:: 2018
Wydawca:: Polska Akademia Nauk. Instytut Paleobiologii PAN
Opis:: Post-Palaeozoic crinoids from northeast Spain ranging from the Ladinian (Middle Triassic) to the Ilerdian (lower Ypresian, early Eocene) are documented. Here we provide the first attempt to reconstruct the environmental distribution of these crinoids based on relatively complete material (mostly cups). Triassic forms are dominated by encrinids from outer carbonate ramps. Late Jurassic crinoids are dominated by cyrtocrinids, comatulids, millericrinids, and isocrinids, occurring either on sponge mounds and meadows or on soft substrates within middle to outer carbonate ramps. Aptian (Early Cretaceous) forms include nearly complete isocrinids which are found in extremely shallow environments represented by bioclastic carbonates and interspersed oyster-rich layers. Other Aptian occurrences come from more distal and deep environments and are composed solely of comatulids. Albian forms are dominated by cyrtocrinids and isocrinids associated with coral reefs. Late Cretaceous and Eocene crinoids include mostly bourgueticrinids (Comatulida) that are found either in outer ramp facies or associated with mid-ramp reef complexes. The later corresponds to one of the shallowest occurrence of bourgueticrinids in the Cenozoic. The palaeoecological data for fossil crinoids of northeast Spain contributes to reconstructing the history of the bathymetric distribution of articulate crinoids, supporting the idea that stalked crinoids were able to inhabit a wide range of shallow marine environments in the late Mesozoic and early Cenozoic.
Źródło:: Acta Palaeontologica Polonica; 2018, 63, 4
0567-7920
Pojawia się w:: Acta Palaeontologica Polonica
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 25.

Tytuł:: 100G shortwave wavelength division multiplexing solutions for multimode fiber data links
Autorzy:: Cimoli, B.
Estaran Tolosa, J. M.
Rodes Lopez, G. A.
Vegas Olmos, J. J.
Monroy, I. T.
Powiązania:: https://bibliotekanauki.pl/articles/173811.pdf
Data publikacji:: 2016
Wydawca:: Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej
Tematy:: vertical-cavity surface-emitting laser (VCSEL)
multimode fiber
MMF
wavelength division multiplexing
WDM
Opis:: We investigate an alternative 100G solution for optical short-range data center links. The presented solution adopts wavelength division multiplexing technology to transmit four channels of 25G over a multimode fiber. A comparative performance analysis of the wavelength-grid selection for the wavelength division multiplexing data link is reported. The analysis includes transmissions over standard optical multimode fiber (OM): OM2, OM3 and OM4.
Źródło:: Optica Applicata; 2016, 46, 3; 409-419
0078-5466
1899-7015
Pojawia się w:: Optica Applicata
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 26.

Tytuł:: Determination of the JWL Constants for ANFO and Emulsion Explosives from Cylinder Test Data
Autorzy:: Sanchidrián, J. A.
Castedo, R.
López, L. M.
Segarra, P.
Santos, A. P.
Powiązania:: https://bibliotekanauki.pl/articles/358385.pdf
Data publikacji:: 2015
Wydawca:: Sieć Badawcza Łukasiewicz - Instytut Przemysłu Organicznego
Tematy:: cylinder test
JWL equation of state
LS-DYNA
ANFO
emulsion explosives
Opis:: The Jones-Wilkins-Lee (JWL) equation of state parameters for ANFO and emulsion-type explosives have been obtained from cylinder test expansion measurements. The calculation method comprises a new radial expansion function, with a non-zero initial velocity at the onset of the expansion in order to comply with a positive Gurney energy at unit relative volume, as the isentropic expansion from the CJ state predicts. The equations reflecting the CJ state conditions and the measured expansion energy were solved for the JWL parameters by a non-linear least squares scheme. The JWL parameters of thirteen ANFO and emulsion type explosives have been determined in this way from their cylinder test expansion data. The results were evaluated through numerical modelling of the tests with the LS-DYNA hydrocode; the expansion histories from the modelling were compared with the measured ones, and excellent agreement was found.
Źródło:: Central European Journal of Energetic Materials; 2015, 12, 2; 177-194
1733-7178
Pojawia się w:: Central European Journal of Energetic Materials
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 27.

Tytuł:: Postcranial remains of basal typotherian notoungulates from the Eocene of northwestern Argentina
Autorzy:: Armella, M.A.
Garcia-Lopez, D.A.
Babot, M.J.
Deraco, V.
Herrera, C.M.
Saade, L.
Bertelli, S.
Powiązania:: https://bibliotekanauki.pl/articles/2082173.pdf
Data publikacji:: 2020
Wydawca:: Polska Akademia Nauk. Instytut Paleobiologii PAN
Tematy:: Mammalia
Notoungulata
calcaneum
astragalus
plantigrade
foot stances
Paleogene
South America
Opis:: Notoungulates represent the most taxonomically diverse and temporally and geographically widespread group among South American native ungulates. Here, we analyze anatomical and systematic aspects of proximal tarsal bones recovered from the Lower and Upper Lumbrera formations (middle and late middle Eocene) in northwestern Argentina. We provide detailed descriptions, comparisons, and infer foot stances and range of movements for the taxa implicated. Material studied includes astragali belonging to the oldfieldthomasiid Colbertia lumbrerense (Lower Lumbrera Formation), a set of proximal tarsals referred as Typotheria indet. (Lower Lumbrera Formation), and tarsals (also including navicular and cuboid) of the informal taxon “Campanorco inauguralis” (Upper Lumbrera Formation). The comparison of the tarsals of Colbertia lumbrerense (middle Eocene of Argentina) with Colbertia magellanica (early Eocene of Brazil) reveals several differences including variations on the development and arrangement of articular facets, and the size of the dorsal astragalar foramen in the Argentinean species. The specimen of Typotheria indet. shows morphological affinities with basal interatheriid taxa. However, its larger size contrasting with the overall small body sizes of Eocene interatheriids precludes an indisputable taxonomic assignment. Concerning “Campanorco inauguralis”, our observations indicate that there is no morphological evidence for a close phylogenetic relationship with Mesotheriidae. It presents a “reversed alternating tarsus” condition, which is also observed in Leontiniidae, “Notohippidae”, Toxodontidae, and some typotherians. However, the spectrum of singularities exhibited by this form precludes the assessment of its relationships in the context of the Paleogene radiation of Typotheria and it is necessary to extend the comparison to Eocene notoungulates. Finally, in a morphofunctional context a plantigrade foot posture is inferred for the specimens here reported. These observations have the potential to provide functional proxies for paleoecological reconstructions to be applied to the study of the early radiation of these notoungulate faunas.
Źródło:: Acta Palaeontologica Polonica; 2020, 65, 2; 1-17
0567-7920
Pojawia się w:: Acta Palaeontologica Polonica
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 28.

Tytuł:: Construction of the nest of Amazilia rutila De Lattre (Trochillidae) and its anti-predatory defensive strategy in a medium deciduous forest in Campeche, Mexico
Autorzy:: López-Castilla, Héctor M.J.
Ríos-Oviedo, Ángel
Cetzal-Ix, William
Basu, Saikat Kumar
Powiązania:: https://bibliotekanauki.pl/articles/2176775.pdf
Data publikacji:: 2019-12-31
Wydawca:: Uniwersytet Pedagogiczny im. Komisji Edukacji Narodowej w Krakowie
Tematy:: Asclepias curassavica
Cnidoscolus aconitifolius
hummingbird
Mangifera indica
Yucatan peninsula
koliber
Półwysep Jukatan
Opis:: The Yucatan peninsula (YP) is part of a biogeographical area characterised by its diversity of flora and fauna, among which are the birds, mainly hummingbirds, which are indicators of the state of conservation of the ecosystems. In birds, the site establishment and construction of nest plays a fundamental role for reproduction and survival rate, the selection of materials occurs opportunistically, but birds tend to use fresh leaves of plants with antimicrobial properties or that allow the depletion of ectoparasites in their nests. In this sense, for the first time we recorded for the cinnamon hummingbird (Amazilia rutila De Lattre), the materials used for the construction of its nest and the site of establishment of the nest in the host plants in two sites of a medium sub-deciduous forest in, Mexico. We recorded the construction of nests of A. rutila in two locations in Campeche; in the first site the nest was found in a chaya bush Cnidoscolus aconitifolius (Mill.) I.M. Johnst. (Euphorbiaceae); most possibly as an anti-predatory strategy for trichomes in the form of sharp hairs and spines that the plants possess in their stems and leaves. In the second site, the nest was found in a mango tree Mangifera indica L. (Anacardiaceae). The main vegetative material identified for the construction of the nests in both locations, were made from pappus (thin and cottony filament that possess the seeds for the dispersion) from Asclepias curassavica L. (Apocynaceae).
Półwysep Jukatan (YP) jest częścią obszaru biogeograficznego charakteryzującego się różnorodnością flory i fauny. Wśród fauny licznie występują ptaki, głównie kolibry, będące wskaźnikami stanu zachowania ekosystemów. Dla ptaków zakładanie i budowa gniazda odgrywa podstawową rolę w rozmnażaniu i przeżywalności. Wybór materiałów na gniazda odbywa się oportunistycznie, ale ptaki zwykle używają świeżych liści, o właściwościach rzeciwdrobnoustrojowych lub pozwalających na odstraszenie pasożytów zewnętrznych z ich gniazd. W tym kontekście, dla kolibra cynamonowego (Amazilia rutila De Lattre) po raz pierwszy opisaliśmy materiały użyte do budowy gniazda oraz miejsce założenia gniazda w roślinach żywicielskich, w dwóch lokalizacjach lasu liściastego w Meksyku. Obserwowaliśmy budowę gniazd A. rutila w dwóch lokalizacjach w Campeche. W pierwszym miejscu gniazdo znaleziono w zaroślach Chaya Cnidoscolus aconitifolius (Mill.) I.M. Johnst. (Euphorbiaceae); ostre włoski i kolce, które mają rośliny z tego rodzaju na swoich łodygach i liściach, najprawdopodobniej występują tu jako anty-drapieżna strategia dla włosieni. W drugim miejscu gniazdo znaleziono na drzewie mango Mangifera indica L. (Anacardiaceae). Główny materiał roślinny zidentyfikowany do budowy gniazd w obu lokalizacjach został wykonany z puchu – pappus (cienkiego i bawełnianego filamentu służącego do dyspersji nasion) z Asclepias curassavica L. (Apocynaceae).
Źródło:: Annales Universitatis Paedagogicae Cracoviensis Studia Naturae; 2019, 4; 67-77
2543-8832
2545-0999
Pojawia się w:: Annales Universitatis Paedagogicae Cracoviensis Studia Naturae
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 29.

Tytuł:: High performance quantum key distribution prototype system using a commercial off-the-shelf solution: experimental and emulation demonstrations
Autorzy:: Lopez-Leyva, J. A.
Ruiz-Higuera, J.
Arvizu-Mondragon, A.
Santos-Aguilar, J.
Ramos-Garcia, R.
Ponce-Camacho, M.
Powiązania:: https://bibliotekanauki.pl/articles/174150.pdf
Data publikacji:: 2017
Wydawca:: Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej
Tematy:: quantum cryptography
final secret key rate
FSecKR
coherent states
Opis:: A continuous variable-quantum key distribution system prototype that uses weak coherent states with a diffused phase, commercial off-the-shelf devices, complete free space 90-degrees hybrid and simplified quantum protocol is proposed in this paper. In general, the quantum transmitter-receiver shows an experimental average quantum bit error rate of 30% using auto-homodyne detection with 0.25 photons per pulse in locking phase mode. The emulated final secret key rate measurements were 20 and 40 Kbps for minimum (30 Mbps) and maximum (90 Mbps) throughput, respectively, in a real traffic network using databases for the quantum keys generated by two true random number generators.
Źródło:: Optica Applicata; 2017, 47, 3; 411-419
0078-5466
1899-7015
Pojawia się w:: Optica Applicata
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 30.

Tytuł:: Dual regulation of cytosolic ascorbate peroxide (APX) by tyrosine nitration and S-nitrosylation
Autorzy:: Begara-Morales, J.
Sanchez-Calvo, B.
Chaki, M.
Valderrama, R.
Mata-Perez, C.
Lopez-Jaramillo, J.
Carreras, A.
Padilla, M.
Corpas, F.
Barroso, J.
Powiązania:: https://bibliotekanauki.pl/articles/80378.pdf
Data publikacji:: 2013
Wydawca:: Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:: conference
post-translational modification
nitric oxide
target protein
ascorbate peroxidase
tyrosine nitration
S-nitrosylation
salinity stress
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

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Skocz do pozycji: 31.

Tytuł:: A posteriori error estimates for beams with inexact flexural stiffness representation
Autorzy:: Torii, André J.
Gracite, Paula M.A.
Miguel, Leandro F.F.
Lopez, Rafael H.
Powiązania:: https://bibliotekanauki.pl/articles/24201505.pdf
Data publikacji:: 2023
Wydawca:: Politechnika Częstochowska. Wydawnictwo Politechniki Częstochowskiej
Tematy:: beam
error estimate
inexact stiffness
belka
oszacowanie błędów
Opis:: In this work, we present a posteriori error estimates for the Euler-Bernoulli beam theory with inexact flexural stiffness representation. This is an important subject in practice because beams with non-uniform flexural stiffness are frequently modeled using a mesh of elements with constant stiffness. The error estimates obtained in this work are validated by means of two numerical examples. The estimates presented here can be employed for adaptive mesh refinement.
Źródło:: Journal of Applied Mathematics and Computational Mechanics; 2023, 22, 2; 62--74
2299-9965
Pojawia się w:: Journal of Applied Mathematics and Computational Mechanics
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 32.

Tytuł:: Robust sensor fault estimation for descriptor-LPV systems with unmeasurable gain scheduling functions: Application to an anaerobic bioreactor
Autorzy:: López-Estrada, F. R.
Ponsart, J. C.
Theilliol, D.
Astorga-Zaragoza, C. M.
Camas-Anzueto, J. L.
Powiązania:: https://bibliotekanauki.pl/articles/331392.pdf
Data publikacji:: 2015
Wydawca:: Uniwersytet Zielonogórski. Oficyna Wydawnicza
Tematy:: fault diagnosis
fault estimation
LPV systems
observer design
descriptor system
diagnostyka uszkodzeń
estymacja błędu
obserwator
układ deskryptorowy
Opis:: This paper addresses the design of a state estimation and sensor fault detection, isolation and fault estimation observer for descriptor-linear parameter varying (D-LPV) systems. In contrast to where the scheduling functions depend on some measurable time varying state, the proposed method considers the scheduling function depending on an unmeasurable state vector. In order to isolate, detect and estimate sensor faults, an augmented system is constructed by considering faults to be auxiliary state vectors. An unknown input LPV observer is designed to estimate simultaneously system states and faults. Sufficient conditions to guarantee stability and robustness against the uncertainty provided by the unmeasurable scheduling functions and the influence of disturbances are synthesized via a linear matrix inequality (LMI) formulation by considering H∞ and Lyapunov approaches. The performances of the proposed method are illustrated through the application to an anaerobic bioreactor model.
Źródło:: International Journal of Applied Mathematics and Computer Science; 2015, 25, 2; 233-244
1641-876X
2083-8492
Pojawia się w:: International Journal of Applied Mathematics and Computer Science
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 33.

Tytuł:: Enzyme activities regulating ROS metabolism in olive ( Olea europaea L.) seeds
Autorzy:: Zienkiewicz, A.
Jimenez-Quesada, M.
Traverso, J.
Zafra, A.
Lopez-Huertas, E.
Zienkiewicz, K.
Castro, A.
Rodriguez-Garcia, M.
Alche, J.
Powiązania:: https://bibliotekanauki.pl/articles/79927.pdf
Data publikacji:: 2013
Wydawca:: Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:: conference
enzyme activity
reactive oxygen species
metabolism
olive
Olea europaea
seed
antioxidative enzyme
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

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Skocz do pozycji: 34.

Tytuł:: Polyphenolic composition of Spanish cultivars of globe artichoke (Cynara cardunculus L. var. scolymus (L.) Fiori)
Autorzy:: Pérez-Esteve, É.
Sałata, A.
Barat, J.M.
Stępniowska, A.
López-Galarza, S.
Nurzyńska-Wierdak, R.
Powiązania:: https://bibliotekanauki.pl/articles/11897335.pdf
Data publikacji:: 2018
Wydawca:: Uniwersytet Przyrodniczy w Lublinie. Wydawnictwo Uniwersytetu Przyrodniczego w Lublinie
Tematy:: plant cultivation
cardoon
Cynara cardunculus
polyphenolic composition
Opal cultivar
Concerto cultivar
Symphony cultivar
Madrigal cultivar
Blanca de Tudela cultivar
A-106 cultivar
herbal plant
medicinal plant
phenolics content
chlorogenic acid
apigenin
cynarin
Opis:: Globe artichoke (Cynara cardunculus L. var. scolymus (L.) Fiori) is an edible herbaceous perennial plant that plays an important economic role in Mediterranean agriculture. In recent years, extensive research, which aimed to characterize the phenolic profile of the most important globe artichoke cultivars in Italy, has been conducted. However, very little information is available on the phenolic composition of cultivars traditionally grown in Spain. In this work, six cultivars (‘Opal’, ‘Symphony’, ‘Concerto’, ‘Madrigal’, ‘Blanca de Tudela’ and ‘A-106’) cultured in Spain were characterized according to their phenolic content. The phenolic profile differed between cultivars, and also between flower parts. The major phenolic compound in all the different cultivars was chlorogenic acid. Of the six studied cultivars, ‘Madrigal’ had the highest phenolic content.
Źródło:: Acta Scientiarum Polonorum. Hortorum Cultus; 2018, 17, 2; 177-184
1644-0692
Pojawia się w:: Acta Scientiarum Polonorum. Hortorum Cultus
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 35.

Tytuł:: Atomic layer deposition as a tool of Surface engineering
Autorzy:: Tiznado, H.
Domínguez, D.
Borbón-Nuñez, H. A.
López, J.
Lizárraga, E.
Romo-Herrera, J. M.
Murillo-Bracamontes, E.
Soto, G.
Powiązania:: https://bibliotekanauki.pl/articles/1163971.pdf
Data publikacji:: 2018
Wydawca:: Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
Tematy:: ALD
Nanolaminates
Surface
nanotubes
Opis:: The applications of nanostructured materials are close related to their shape and properties. A comprehensive understanding of the properties modification by controlling the material size, thickness or shape is of key importance. A nanostructure can become a building block to create the upcoming nano-technological stages, where the final characteristics of devices can be fine-tuned from design. In this report it is shown that several physicochemical properties, such as refractive index, band gap or thermal resistance can be modified in a controlled fashion. ALD is a very versatile fabrication technique for building nanotubes (Al2O3 and TiO2), nanolaminates (Al2O3-ZnO, Y2O3-ZrO2 and ZrO2-TiO2) and core-shell materials (diamond-Al2O3) with an exquisite precision on the thickness of the coatings.
Źródło:: World Scientific News; 2018, 108; 99-110
2392-2192
Pojawia się w:: World Scientific News
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 36.

Tytuł:: A field trial of recombinant Schistosoma japonicum paramyosin as a potential vaccine in naturally-infected water buffaloes
Autorzy:: Jiz II, M.A.L.
Mingala, C.N.
Lopez, I.F.M.
Chua, M.
Gabonada Jr., F.G.
Acosta, L.P.
Wu, H.
Kurtis, J.D.
Powiązania:: https://bibliotekanauki.pl/articles/6326.pdf
Data publikacji:: 2016
Wydawca:: Polskie Towarzystwo Parazytologiczne
Opis:: The overall aims of this project are to assess the safety and immunogenicity of the Schistosoma japonicum vaccine paramyosin among water buffaloes residing in endemic areas. The study was conducted in four villages in Leyte, the Philippines, an area highly endemic for schistosomiasis japonica. One hundred and fifteen (N=115) animals provided baseline stool samples for coprologic examination, with preliminary results using FLOTAC showing a 10% prevalence of schistosomiasis. Forty-nine (N=49) animals consented to treatment with 25 mg/kg Praziquantel, and 40, 36 and 32 animals consented to the first, second and third dose of the paramyosin vaccine, respectively. The safety trial involved the first 20 animals and included skin testing, vaccination, anaphylaxis monitoring, as well as hematology and serum chemistry analysis. Skin tests revealed that only three out of 20 animals exhibited redness at the injection site, with none greater than 1 cm. None of the animals exhibited anaphylaxis, and all hematology and serum chemistry markers were within normal range or were similar to pre-vaccination levels. None of the 40 animals administered with the first dose exhibited anaphylaxis, nor any of the subsequent vaccine doses. Immunogenicity assessment of sera collected prior to every vaccination and one month after the last dose showed that the paramyosin vaccine induced robust antibody responses to all animals, as assessed by ELISA. The cytokine levels of whole blood culture supernatants will be further assessed. Our findings demonstrate that the S. japonicum paramyosin vaccine is a safe, well-tolerated and immunogenic treatment among water buffalos residing in endemic areas.
Źródło:: Annals of Parasitology; 2016, 62, 4
0043-5163
Pojawia się w:: Annals of Parasitology
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 37.

Tytuł:: Techno-Functional and Bioactive Properties and Chemical Composition of Guava, Mamey Sapote, and Passion Fruit Peels
Autorzy:: López-Martínez, Leticia X.
Villegas-Ochoa, Mónica A.
Domínguez-Avila, J. Abraham
Yahia, Elhadi M.
Gonzalez-Aguilar, Gustavo A.
Powiązania:: https://bibliotekanauki.pl/articles/24024619.pdf
Data publikacji:: 2023-11-02
Wydawca:: Instytut Rozrodu Zwierząt i Badań Żywności Polskiej Akademii Nauk w Olsztynie
Tematy:: tropical fruits
phenolic profile
antioxidant potential
enzyme inhibition
glucose adsorption capacity
fat/oil binding capacity
sodium cholate binding capacity
Opis:: Due to their nutritional and sensorial characteristics, tropical fruits like guava, mamey sapote, and passion fruit are regularly incorporated into daily diets. Their by-products, especially peels, are approximately 10 to 35% of their weight and possess an important content of bioactive compounds, such as dietary fiber and phenolics. The nutritional, technological, physio-functional properties and phenolic compound compositions of guava, mamey sapote, and passion fruit peels were studied. Peels had promising techno- and physio-functional characteristics, good dietary fiber contents (45.18-61.42 g/100 g), and phenolic profiles with ferulic acid, gallic acid, p-coumaric, and catechin as the main compounds. Peel powders also showed excellent DPPH radical scavenging activity (125.3–252.4 µmol TE/100 g) and Trolox equivalent antioxidant capacity, TEAC (369.2–656.8 µmol TE/100 g). The α-amylase and lipase inhibitory activity varied from 28.15 to 51.4% and 30.89 to 57.15%, respectively. Higher values of α-glucosidase inhibition capacity were found, ranging from 51.64 to 70.32%. The chemical composition and properties reported in the present work suggest that peel powders of these guava, mamey sapote, and passion fruit could be used as constituents in different foods, such as bakery and meat goods, with beneficial health effects like control of hyperglycemia, improved intestinal function, and control of overweight; however, more studies are necessary for animal models and humans to confirm these bioactivities conclusively.
Źródło:: Polish Journal of Food and Nutrition Sciences; 2023, 73, 4; 311-321
1230-0322
2083-6007
Pojawia się w:: Polish Journal of Food and Nutrition Sciences
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 38.

Tytuł:: Nutritional and antioxidant profile of the Physalis fruit grown in three Andean regions of Peru
Autorzy:: Obregón-La Rosa, A.J.
Contreras-López, E.
Juárez, E.F.
Barrón, U.G.
Muñoz, A.M.
Ramos-Escudero, F.
Powiązania:: https://bibliotekanauki.pl/articles/28765541.pdf
Data publikacji:: 2023
Wydawca:: Narodowy Instytut Zdrowia Publicznego. Państwowy Zakład Higieny
Opis:: Background. Physalis peruviana L. fruit contains nutritional and bioactive compounds of immense importance to public health and represents a potential ingredient for the development of functional foods and beverages. Objective. This study aimed to determine the chemical and nutritional composition as well as the antioxidant capacity of the P. peruviana L. fruit grown in Peru in three areas of the Central Andean region. Material and methods. Proximal and physicochemical analyses and estimation of mineral content, vitamin C, total carotenoids, total polyphenols, and antioxidant capacity (2, 2-diphenyl-1-picrylhydrazyl [DPPH] and 2, 2′-azinobis (3-ethylbenzothiazoline-6-sulfonic acid) [ABTS] assays) were performed using standardized methods. Results. The fruits were collected from three regions of the Peruvian Andes (Ancash, Cajamarca, and Cusco). The results showed that the content of potassium (306.54–327.60 mg/100 g) and iron (12.93–14.47 mg/kg) was prominent. The Physalis fruit had high levels of vitamin C (47.20–52.20 mg/100 g), total polyphenols (68.17–83.40 mg equivalents of gallic acid/100 g), and carotenoids (1.12–1.73 mg β-carotene/100 g). Higher values for antioxidant capacity were obtained with the ABTS method (896–1003.33 μmol Trolox/100 g) than with the DPPH method (290–309 μmol Trolox/100 g). Conclusions. This study confirms that the P. peruviana fruit has properties that could provide important health benefits and that it could be used for the development of functional foods and food supplement.
Źródło:: Roczniki Państwowego Zakładu Higieny; 2023, 74, 1; 49-57
0035-7715
Pojawia się w:: Roczniki Państwowego Zakładu Higieny
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 39.

Tytuł:: Seamless communication for crisis management
Ponadsystemowa łączność do zarządzania kryzysowego
Autorzy:: Wojciechowicz, W.
Fournier, J.
Konecny, M.
Vanya, S.
Stoodley, J.
Entwisle, P.
Hein, D. M.
Machalek, A.
Fournaris, A.
Uriarte, M.
Lopez, O.
O'Neill, S.
Bradl, H.
Balogh, Z.
Gatial, E.
Hluchy, L.
Mirosław, T.
Zych, J.
Powiązania:: https://bibliotekanauki.pl/articles/298322.pdf
Data publikacji:: 2012
Wydawca:: Uniwersytet Warmińsko-Mazurski w Olsztynie
Tematy:: SECRICOM
bezszwowa komunikacja
zarządzanie kryzysowe
Multi Bearer Router
MBR
Push To Talk
PTT
SECRICOM Silentel
Secure Docking Module
SDM
Secure Agent Infrastructure
SAI
Communication Security Monitoring and Control Centre
CSMCC
siódmy program ramowy
7PR
Trusted Computing
seamless communication
crisis management
Push To Talk (PTT)
Seventh Framework Programme
FP7
Opis:: SECRICOM - Seamless Communication for crisis management was a research and development project, realised within the Seventh Framework Programme (7PR). The aim of this project was to develop reference solution based on existing infrastructure, which will be capable to ensure secure and efficient communication for operational crisis management. The project was an answer to the European Security Research Advisory Board (ESRAB) report, in which key requirements for a communication system have been stated. Secure and efficient communication system is a necessity for effective crisis management. It is assumed that such infrastructure may significantly increase rescue actions effectiveness. Currently, however, there are cases when various services (not only domestically but also internationally) use heterogeneous telecommunications systems. It results in the lack of or significant problems with mutual communication. Such situation is often considered problematic and posing a threat to the effective rescue actions. For this purpose, a secure and multi-platform communications system (SECRICOM Silentel) has been developed within SECRICOM project. The Multi Bearer Router (MBR) optimise the backbone network by the use of multiple bearers and dynamic adjustment to various conditions. Advance mechanisms enhancing end-user devices' security - Secure Docking Module (SDM) - have been developed using Trusting Computing principles. Secure Agent Infrastructure (SAI) ensures - based on agents' infrastructure - secure access to distributed data. The system is supplemented with network monitoring platform - Communication Security Monitoring and Control Centre. The SECRICOM project resulted in a communication system prototype, which is capable of ensuring interoperability as well as secure and efficient communication for operational crisis management. This system has been demonstrated on several occasions to the stakeholders.
SECRICOM - Seamless Communication for crisis management to projekt badawczo-rozwojowy, który został zrealizowany w ramach siódmego programu ramowego (7PR). Celem projektu było wypracowanie bezpiecznej i, co ważne, bazującej na istniejącej infrastrukturze platformy komunikacyjnej do operacyjnego zarządzania kryzysowego. Projekt ten stanowi odpowiedź na raport European Security Research Advisory Board (ESRAB), w którym określono najważniejsze wymagania odnośnie do systemu komunikacji. Bezpieczny i wydajny system komunikacji jest warunkiem koniecznym do efektywnego zarządzania w sytuacjach kryzysowych. Przyjmuje się, że taka platforma jest w stanie znacząco zwiększyć efektywność prac służb ratunkowych. Obecnie jednak są przypadki, gdy służby ratunkowe (nie tylko na arenie międzynarodowej, lecz także podczas działań w jednym kraju) korzystają z niejednorodnych systemów telekomunikacyjnych, co często skutkuje brakiem lub istotnymi problemami z wzajemną łącznością. Sytuacja ta jest postrzegana jako problematyczna i stanowi zagrożenie dla efektywnego działania służb ratunkowych. W ramach projektu SECRICOM opracowano system międzyplatformowej, bezpiecznej łączności SECRICOM Silentel. Za optymalizację transmisji danych (w tym wykorzystanie wielu nośnych oraz dynamiczne dostosowywanie się do warunków) w sieci dystrybucyjnej oraz szkieletowej odpowiada Multi Bearer Router (MBR). Zaawansowane mechanizmy zwiększające bezpieczeństwo urządzeń końcowych - Secure Docking Module (SDM) - opracowano z wykorzystaniem pryncypiów Trusted Computing. Secure Agent Infrastructure (SAI) zapewnia - oparty na infrastrukturze agentów - bezpieczny dostęp do rozproszonych danych. System uzupełnia platforma nadzoru nad siecią - Communication Security Monitoring and Control Centre. Jako rezultat projektu zbudowano oraz kilkukrotnie zademonstrowano prototypową wersję systemu komunikacji. System ten jest zdolny do zapewnienia interoperacyjnej, bezpiecznej i wydajnej łączności w zarządzaniu w sytuacjach kryzysowych.
Źródło:: Technical Sciences / University of Warmia and Mazury in Olsztyn; 2012, 15(1); 65-79
1505-4675
2083-4527
Pojawia się w:: Technical Sciences / University of Warmia and Mazury in Olsztyn
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 40.

Tytuł:: Synthesis and characterization of a citric and lipoic acids-derived dendrimer
Synteza i charakterystyka dendrymeru pochodzącego z kwasu cytrynowego i liponowego
Autorzy:: Salgado-Delgado, René
Salgado-Delgado, Areli M.
Olarte-Paredes, Alfredo
García-Fuentes, Juan J.
López-Lara, Teresa
Hernández-Zaragoza, Juan B.
García-Hernández, Edgar
Castaño, Víctor M.
Powiązania:: https://bibliotekanauki.pl/articles/2202634.pdf
Data publikacji:: 2023
Wydawca:: Sieć Badawcza Łukasiewicz - Instytut Chemii Przemysłowej
Tematy:: dendrimer
citric acid
lipoic acid
dendrymer
kwas cytrynowy
kwas liponowy
Opis:: The paper describes the synthesis and characterization of two third generation dendrimers from citric acid and a variant with a dendron terminated with lipoic acid. FTIR and C NMR confirmed the presence of signals characteristic for the dendrimer functional groups OH, C-O, C=O, C-H and C-S. DSC showed that, unlike citric acid, the dendrimer is amorphous. SEM revealed changes in the structure of citric acid particles in each dendrimer generation. In addition, the structure was more homogeneous. Dendrimers are hydrophobic due to ester linkages. Contact angle > 90° confirms their hydrophobic char-acter. Moreover, the dendrimer with a dendron terminated with lipoic acid absorbs Cu+2 and Fe+3metal ions, so it can be used as an adsorbent for heavy metals.
W pracy opisano syntezę i charakterystykę dwóch dendrymerów trzeciej generacji z kwasu cytrynowego oraz wariantu z dendronem zakończonym kwasem liponowym. Metodą FTIR i C NMR potwierdzono sygnały charakterystyczne dla grup funkcyjnych dendrymeru OH, C-O, C=O, C-H i C-S. Metodą DSC wykazano, że w odróżnieniu od kwasu cytrynowego dendrymer jest amorficzny. Mikrofotografie SEM wykazały zmiany w strukturze cząstek kwasu cytrynowego w każdym pokoleniu dendrymeru. Ponadto struktura była bardziej jednorodna. Dzięki wiązaniom estrowym otrzymane dendrymery są hydrofobowe, co potwierdza kąt zwilżania > 90°. Wykazano również, że dendrymer z dendronem zakończonym kwasem liponowym absorbuje jony metali Cu+2 i Fe+3, dzięki czemu może być stosowany jako adsorbent metali ciężkich.
Źródło:: Polimery; 2023, 68, 1; 25--31
0032-2725
Pojawia się w:: Polimery
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 41.

Tytuł:: Physical and chemical characterization of masa and tortillas from parental lines, crosses, and one hybrid
Autorzy:: Valderrama-Bravo, C.
Dominguez-Pacheco, A.
Hernandez-Aguilar, C.
Zepeda-Bautista, R.
del Real-Lopez, A.
Pahua-Ramos, M.E.
Arellano-Vazquez, J.L.
Moreno-Martinez, E.
Powiązania:: https://bibliotekanauki.pl/articles/24739.pdf
Data publikacji:: 2017
Wydawca:: Polska Akademia Nauk. Instytut Agrofizyki PAN
Opis:: In maize plant breeding aimed at producing a hybrid, it is necessary to characterize the parents and hybrids by their agronomic aspects and grain quality so that the processing industry may offer consumers a quality product and also improve its efficiency. This study evaluated the viscoelastic parameters of masa and the chemical and texture properties of tortillas obtained from parent lines (M-54, M55, and CML-242), two single crosses (M54xM55 and M55xM54), and one hybrid (H-70). The morpho- logy of the maize grains and tortillas was analyzed using scanning electron microscopy. The firmness of masa obtained from CML-242 and H-70 maize was higher than that from the other maize genotypes. M-54 tortillas showed the lowest crude fiber content. Otherwise, tortillas obtained from the M55xM54 hard grain had the lowest fat content and extensibility, while H-70 tortillas showed an intermediate breaking point and extensibility. M-54 and M54xM55 tortillas were softer due to their more swollen starch granules. In contrast, rigid tortillas were obtained from CML-242 and H-70. Grain hardness causes different morphology in starch and tortilla of maize genotypes. However, grain hardness did not influence the characteristics of texture in tortillas.
Źródło:: International Agrophysics; 2017, 31, 1
0236-8722
Pojawia się w:: International Agrophysics
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 42.

Tytuł:: From Light to Heavy Nuclear Systems, Production and Decay of Fragments Studied with Powerful Arrays
Autorzy:: Casini, G.
Morelli, L.
Barlini, S.
Piantelli, S.
D'Agostino, M.
Baiocco, G.
Marchi, T.
Abbondanno, U.
Ademard, G.
Appannababu, S.
Bini, M.
Bonnet, E.
Borderie, B.
Bougault, R.
Bruno, M.
Chbihi, A.
Cinausero, M.
Degerlier, M.
Fabris, D.
Frankland, J.
Gelli, N.
Gramegna, F.
Gruyer, D.
Gulminelli, F.
Kordyasz, A.
Kozik, T.
Kravchuk, V.
Kulig, P.
Le Neindre, N.
Lopez, O.
Maurenzig, P.
Olmi, A.
Pasquali, G.
Pârlog, M.
Poggi, G.
Rivet, M.
Rosato, E.
Sosin, Z.
Spadaccini, G.
Stefanini, A.
Twarog, T.
Valdrè, S.
Vient, E.
Raduta, A.
Powiązania:: https://bibliotekanauki.pl/articles/1402639.pdf
Data publikacji:: 2015-05
Wydawca:: Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:: 25.70.Gh
25.70.Pq
25.70.Mn
29.40.-n
Opis:: Reactions between heavy-ions at various energy regimes produce many nuclear fragments which can be populated in highly excited states. The study of these fragments, detected at the end of their particle decay, is important to investigate nuclear forces and structure effects. In recent years there have been many efforts to extend these studies towards the drip-lines, i.e. to systems far from the β-stability valley, by using accelerated radioactive beams. The development of such infrastructures is accompanied by the development of more powerful detectors and associated electronics, capable to identify ions with very different sizes and kinetic energies. Here we give two examples which show how advanced arrays can contribute to the studies on nuclear phenomena. The examples come from the European FAZIA collaboration and from recent campaigns with the GARFIELD apparatus, the latter in operation at the INFN Legnaro Laboratory (Italy) where the SPES RIB facility is under construction.
Źródło:: Acta Physica Polonica A; 2015, 127, 5; 1548-1551
0587-4246
1898-794X
Pojawia się w:: Acta Physica Polonica A
Dostawca treści:: Biblioteka Nauki