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Przejdź do strony domowej biblioteki Pedagogiczna Biblioteka Wojewódzka im. Komisji Edukacji Narodowej w Lublinie Link otwiera się w nowym oknie Logo biblioteki Prolib Integro - strona głównaPedagogiczna Biblioteka Wojewódzka im. Komisji Edukacji Narodowej w Lublinie
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Wyświetlanie 1-10 z 102
Tytuł:
Remediation of polluted waters and wastewater by radiation processing
Autorzy:
Sampa, M. H. O.
Takács, E.
Gehringer, P.
Rela, P. R.
Ramirez, T.
Amro, H.
Trojanowicz, M.
Botelho, M. L.
Han, B.
Solpan, D.
Cooper, W. J.
Emmi, S. S.
Wojnárovits, L.
Tematy:
electron beam
wastewater treatment
pesticides
dyes
degradation
radiation technology
Pokaż więcej
Wydawca:
Instytut Chemii i Techniki Jądrowej
Powiązania:
https://bibliotekanauki.pl/articles/147644.pdf  Link otwiera się w nowym oknie
Opis:
Application of radiation processing for drinking water, wastewater, and groundwater treatment is a cost effective process which may insure adequate availability of that resource worldwide. This paper summarizes the results of a Coordinated Research Project (organized by the IAEA) with participants from 10 countries with the purpose of describing the degradation mechanism of organic impurities, and establishing optimal treatment conditions. Decoloration, disinfection, microbiological and toxicological experiments are also mentioned. These experiments led to pilot plants and also to a large scale industrial realization of radiation technology.
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The Boquillas Formation of the Big Bend National Park, Texas, USA, a reference Cenomanian through Santonian (Upper Cretaceous) carbonate succession at the southern end of the Western Interior Seaway
Autorzy:
Cooper, D. A.
Cooper, R.W.
Stevens, J. B.
Stevens, M. S.
Cobban, W. A.
Walaszczyk, I.
Tematy:
Boquillas Formation
Upper Cretaceous
US Western Interior Seaway
lithostratigraphy
biostratigraphy
paleoenvironment
formacja Boquillas
górna kreda
litostratygrafia
biostratygrafia
paleośrodowisko
Pokaż więcej
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Powiązania:
https://bibliotekanauki.pl/articles/139039.pdf  Link otwiera się w nowym oknie
Opis:
The upper lower Cenomanian through middle Santonian (Upper Cretaceous) of the Boquillas Formation in the Big Bend Region of Trans-Pecos Texas consists of a marine carbonate succession deposited at the southern end of the Western Interior Seaway. The Boquillas Formation, subdivided into the lower, c. 78 m thick limestone-shale Ernst Member, and the upper, c. 132 m thick limestone/chalk/marl San Vicente Member, was deposited in a shallow shelf open marine environment at the junction between the Western Interior Seaway and the western margins of the Tethys Basin. Biogeographically, the area was closely tied with the southern Western Interior Seaway. The richly fossiliferous upper Turonian, Coniacian and lower Santonian parts of the Boquillas Formation are particularly promising for multistratigraphic studies.
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The morphology of the asteroidal dust around white dwarf stars : optical and near-infrared pulsations in G29-38
Autorzy:
Ogloza, W.
Sargent, J.
Cooper, W.
Provencal, J. L.
Sonbas, Eda
Pringle, J. E.
Pakštienė, Erika
Kim, V.
Walter, B.
Zejmo, M.
Moss, A.
von Hippel, Ted
Kleinman, S. J.
Savery, Z.
Swan, A.
Kusakin, A.
Krugov, M.
Fontaine, G.
Kozyreva, V.
Farihi, J.
Zoła, Stanisław
Serebryanskiy, A.
Hermes, J. J.
Opis:
More than 36 yr have passed since the discovery of the infrared excess from circumstellar dust orbiting the white dwarf G29-38, which at 17.5 pc it is the nearest and brightest of its class. The precise morphology of the orbiting dust remains only marginally constrained by existing data, subject to model-dependent inferences, and thus fundamental questions of its dynamical origin and evolution persist. This study presents a means to constrain the geometric distribution of the emitting dust using stellar pulsations measured at optical wavelengths as a variable illumination source of the dust, which reradiates primarily in the infrared. By combining optical photometry from the Whole Earth Telescope with 0.7–2.5 μm spectroscopy obtained with SpeX at NASA's Infrared Telescope Facility, we detect luminosity variations at all observed wavelengths, with variations at most wavelengths corresponding to the behavior of the pulsating stellar photosphere, but toward the longest wavelengths the light curves probe the corresponding time variability of the circumstellar dust. In addition to developing methodology, we find the pulsation amplitudes decrease with increasing wavelength for principal pulsation modes, yet increase beyond ≈2 μm for nonlinear combination frequencies. We interpret these results as combination modes derived from the principal modes of identical ℓ values and discuss the implications for the morphology of the warm dust. We also draw attention to some discrepancies between our findings and theoretical expectations for the results of the nonlinearity imposed by the surface convection zone on mode–mode interactions and on the behavior of the first harmonic of the highest-amplitude pulsation mode.
Dostawca treści:
Repozytorium Uniwersytetu Jagiellońskiego
Artykuł
Tytuł:
Stochastic Carrier Dynamics in Semiconductor Superlattices
Autorzy:
Fromhold, T. M.
Bujkiewicz, S.
Patanè, A.
Stapleton, S. P.
Sherwood, D.
Fowler, D.
Cooper, J.
Eaves, L.
Belyaev, A. E.
Krokhin, A. A.
Neumann, A.
Wilkinson, P. B.
Sankeshwar, N. S.
Henini, M.
Sheard, F. W.
Tematy:
73.20.At
73.21.Cd
Pokaż więcej
Wydawca:
Polska Akademia Nauk. Instytut Fizyki PAN
Powiązania:
https://bibliotekanauki.pl/articles/2044604.pdf  Link otwiera się w nowym oknie
Opis:
We explore a new regime of hot carrier dynamics, in which electrons in a superlattice miniband exhibit a unique type of stochastic motion when a magnetic field is tilted at an angle θ to the superlattice axis. Remarkably, the dynamics of a miniband electron in a tilted magnetic field reduce to a one-dimensional simple harmonic oscillator, of angular frequency ω$\text{}_{C}$ cos θ, where ω$\text{}_{C}$ is the cyclotron frequency, driven by a time-dependent plane wave whose angular frequency equals the Bloch frequency ω$\text{}_{B}$. At bias voltages for which ω$\text{}_{B}$=nω$\text{}_{C}$ cos θ, where n is an integer, the electron orbits change from localised Bloch-like trajectories to unbounded stochastic orbits, which diffuse rapidly through intricate web patterns in phase space. To quantify how these webs affect electron transport, we make drift-diffusion calculations of the current-voltage curves including the effects of space-charge build up. When the magnetic field is tilted, our simulations reveal a large resonant peak, which originates from stochastic delocalisation of the electron orbits. We show that the corresponding quantised eigenstates change discontinuously from a highly localised character when the system is off resonance to a fully delocalised form when the resonance condition is satisfied.
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Snowmass 2021 whitepaper : proton structure at the precision frontier
Autorzy:
Candido, A.
Moch, S.
Amoroso, S.
Siódmok, Andrzej
Britzger, D.
Ubiali, M.
Hoeche, S.
Weber, J. H.
Huston, J.
Giuli, F.
Hentschinski, M.
Boughezal, R.
Lin, H.-W.
Hekhorn, F.
Malaescu, B.
Mistlberger, B.
Harland-Lang, L. A.
Jadach, S.
Carrazza, S.
Apyan, A.
Rabbertz, K.
Ball, R. D.
Klein, M.
Schnell, G.
Xie, K.
Buckley, A.
Huss, A.
Bissolotti, C.
Petriello, F.
Pires, J.
Thorne, R. S.
Hobbs, T. J.
Courtoy, A.
Whitehead, James
Nocera, E. R.
Cridge, T.
Sutton, M.
Chachamis, G.
Rojo, J.
Schwan, C.
Blümlein, J.
Guzzi, M. G.
Jalilian-Marian, J.
Loizides, C.
Royon, C.
Yuan, C. -P.
Soper, D. E.
Olness, F. I.
Cooper-Sarkar, A. M.
Gwenlan, C.
Vita, G.
Bozzi, G.
Zhou, B.
Armesto, N.
Cruz-Martinez, J. M.
Bertone, V.
Cerci, S.
Krintiras, G. K.
Magni, G.
Celiberto, F. G.
Nadolsky, P. M.
Opis:
An overwhelming number of theoretical predictions for hadron colliders require parton distribution functions (PDFs), which are an important ingredient of theory infrastructure for the next generation of high-energy experiments. This whitepaper summarizes the status and future prospects for determination of high-precision PDFs applicable in a wide range of energies and experiments, in particular in precision tests of the Standard Model and in new physics searches at the high-luminosity Large Hadron Collider and Electron–Ion Collider. We discuss the envisioned advancements in experimental measurements, QCD theory, global analysis methodology, and computing that are necessary to bring unpolarized PDFs in the nucleon to the N2LO and N3LO accuracy in the QCD coupling strength. Special attention is given to the new tasks that emerge in the era of the precision PDF analysis, such as those focusing on the robust control of systematic factors both in experimental measurements and theoretical computations. Various synergies between experimental and theoretical studies of the hadron structure are explored, including opportunities for studying PDFs for nuclear and meson targets, PDFs with electroweak contributions or dependence on the transverse momentum, for incisive comparisons between phenomenological models for the PDFs and computations on discrete lattice, and for cross-fertilization with machine learning/AI approaches.
Dostawca treści:
Repozytorium Uniwersytetu Jagiellońskiego
Artykuł
Wyświetlanie 1-10 z 102

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