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Wyszukujesz frazę "Nicolás, J." wg kryterium: Autor

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    Wyświetlanie 1-6 z 6
    Tytuł:
    Characterization of the Liquid Crystal Display Modulation. Optimization for Some Applications
    Autorzy:
    Campos, J.
    Márquez, A.
    Nicolás, J.
    Moreno, I.
    Iemmi, C.
    Davis, J. A.
    Yzuel, M. J.
    Powiązania:
    https://bibliotekanauki.pl/articles/2030321.pdf
    Data publikacji:
    2002-01
    Wydawca:
    Polska Akademia Nauk. Instytut Fizyki PAN
    Tematy:
    42.79.Kr
    42.79.Hp
    42.25.Ja
    Opis:
    In this paper we revise recent results of our team in the optimization of twisted nematic liquid crystal displays to be used as spatial light modulators for image processing and diffractive optics. In general two kind of responses are desired for the mentioned applications: amplitude-only and phase-only modulations. However, it is not a trivial task to find the polarization configurations for which these responses are obtained. We show that a reverse-engineering approach is needed to optimize the liquid crystal display response. According to this reverse-engineering approach the modulation characteristics can be calibrated by evaluating the modulation response in a few polarization configurations. These results are used to fit the liquid crystal display behavior to a simplified physical model, which uses two modulation parameters. We demonstrate that the degree of accuracy of this model is very high, thus enabling the prediction of the modulation behavior of the display at other polarization configurations. Therefore, we can perform computer searches for the optimum orientation of the polarizing elements to obtain the required optical transmission. We demonstrate the need to use short wavelengths and the need to insert wave plates in front and behind the liquid crystal displays to obtain either amplitude-only or phase-only regime.
    Źródło:
    Acta Physica Polonica A; 2002, 101, 1; 189-200
    0587-4246
    1898-794X
    Pojawia się w:
    Acta Physica Polonica A
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    The Third Option for Stopping Cancer: Complex, Temporally Patterned Weak Magnetic Fields- Critical Factors That Influence Their Efficacy and Potential Mechanisms
    Autorzy:
    Murugan, Nirosha J.
    Rouleau, Nicolas
    Persinger, Michael A.
    Powiązania:
    https://bibliotekanauki.pl/articles/1191252.pdf
    Data publikacji:
    2016
    Wydawca:
    Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
    Tematy:
    new treatments for malignancy
    geomagnetic vector differences
    interactions with patterned magnetic fields
    cancer inhibition
    copper blocking
    Aharanov-Bohm applications
    Dicke quantum optics application
    Opis:
    One of the most promising technologies for suppressing the growth of malignant (cancer) cells without adversely affecting normal cells involves the application of physiologically-patterned and bioquantum compatible magnetic fields with specific temporal increments generated by optocoupler circuits through each of the three spatial planes. However, experimentally generated magnetic field patterns designed to target cancer cells are also immersed within the magnetic environment of the incubators. We measured anomalous alterations in the horizontal (primarily “east-west”) component of the geomagnetic static field intensity within cell incubators when the most effective experimental field was being generated between three sets of solenoids. The eccentric response was a function of the six solenoids being wrapped or not wrapped with copper foil. In addition, activating or deactivating the experimental field for fixed increments was associated with discrete and obvious DC shifts in the horizontal component as well as emergent patterns that were not a component of either the experimental field or the background incubator 60 Hz source. If the temporal pattern that defines the effects induced by these magnetic fields is analogous to the spatial patterns that define chemical functions, failure to accommodate these anisotropic transients could be a source of the frequent contradictions and inter-laboratory failures to replicate these phenomena. We suggest that the emergent phenomena from these interactions with quantum-like features may be the causal variables responsible for many of the promising effects for cancer suppression. A modified Dicke model derived from quantum optics where cells cooperatively interact with a single mode of the field and their dipole fields interact coherently may accommodate the observed effects.
    Źródło:
    World Scientific News; 2016, 54; 267-288
    2392-2192
    Pojawia się w:
    World Scientific News
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Method to determine solar-blind ultraviolet energy and electrical corona loss relation
    Autorzy:
    Coetzer, Casper J.
    Myburgh, Hermanus C.
    West, Nicolas
    Walker, Jerry
    Powiązania:
    https://bibliotekanauki.pl/articles/2174850.pdf
    Data publikacji:
    2022
    Wydawca:
    Polska Akademia Nauk. Stowarzyszenie Elektryków Polskich
    Tematy:
    AC voltage
    algorithm corona cameras
    electrical discharges
    optical energy
    radiometric measurements
    Opis:
    Solar-blind ultraviolet cameras as part of high-voltage electrical inspections until recently have mostly been used for pure observations. These observations only imply the presence of corona discharges and not the severity thereof. A radiometric algorithm together with a calibration algorithm to perform an optical energy measurement were presented earlier. This is a guide on how to apply the algorithm to determine the total optical measurement from corona discharges, plus additional processing. This guide and additions are used to compare the electrical and optical domains with actual examples. The main objective is to illustrate how to determine the electrical and optical relation for the IEC 60720 high-voltage electrical test configurations using a standard open procedure.
    Źródło:
    Opto-Electronics Review; 2022, 30, 4; art. no. e143433
    1230-3402
    Pojawia się w:
    Opto-Electronics Review
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Phenolic Compounds in Agro-Industrial Waste of Mango Fruit: Impact on Health and Its Prebiotic Effect – a Review
    Autorzy:
    Nicolás García, Mayra
    Borrás Enríquez, Anahí J.
    González Escobar, Jorge L.
    Calva Cruz, Oscar D.
    Pérez Pérez, Viridiana
    Sánchez Becerril, Mayra
    Powiązania:
    https://bibliotekanauki.pl/articles/16538530.pdf
    Data publikacji:
    2023-02-21
    Wydawca:
    Instytut Rozrodu Zwierząt i Badań Żywności Polskiej Akademii Nauk w Olsztynie
    Tematy:
    mango processing
    mango wastes
    phytochemicals
    biological properties
    gut health
    Opis:
    The fruit processing industry generates huge amounts of waste annually, causing severe environmental problems. Mango processing produces around 20 million tons of wastes from the non-consumed fraction, mainly peels and seeds, which constitute 30–60% of the fruit weight. However, various phytochemicals found in these residues have been implicated in preventing cancer and also cardio-metabolic and gastrointestinal diseases. Particularly, phenolic compounds hold a promising potential to be utilized as modulatory agents of the human gut microbiota (prebiotics-like actions). This review article mainly discusses the effect of phenolics from mango wastes on gut microbiota modulation and its beneficial repercussions for human health. Moreover, it also discusses the importance of phenolic compounds of mango peel and seed kernel residues, their extraction, identification, and quantification.
    Źródło:
    Polish Journal of Food and Nutrition Sciences; 2023, 73, 1; 5-23
    1230-0322
    2083-6007
    Pojawia się w:
    Polish Journal of Food and Nutrition Sciences
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-6 z 6

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