Autor: Kim, V. - Prolib Integro

Skocz do pozycji: 1.

Tytuł:: Encapsulated di-2-ethylhexylphosphoric acid: synthesis, dispersity and extraction properties
Autorzy:: Feklistov, D.
Laguntsov, N.
Penkina, Y.
Kim, V.
Tematy:: encapsulation
iron extraction
polymer-surfactant complex; Pokaż więcej
Wydawca:: Politechnika Bydgoska im. Jana i Jędrzeja Śniadeckich. Wydział Technologii i Inżynierii Chemicznej
Powiązania:: https://bibliotekanauki.pl/articles/347062.pdf Link otwiera się w nowym oknie
Opis:: Encapsulation of di-2-ethylhexylphosphoric acid was carried out by ionic complex of gelatine with cetyltrimonium bromide. Dispersity of obtained microcapsules at various extractant and oil phase contents was determined by optical microscopy and dynamic light scattering measurements. It was found that kinetic parameters and efficiency of iron removal from aqueous medium by encapsulated extractant is more attractive in comparison with the results of liquid or membrane extraction.
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 2.

Tytuł:: The vortex activation method of reagent water treatment
Autorzy:: Laguntsov, N.
Kim, V.
Krasnov, P.
Neshchimenko, Y.
Borisenko, M.
Odintsov, A.
Fartunin, A.
Tematy:: coagulation
flocculation
water purification
oil products
suspension particles; Pokaż więcej
Wydawca:: Politechnika Bydgoska im. Jana i Jędrzeja Śniadeckich. Wydział Technologii i Inżynierii Chemicznej
Powiązania:: https://bibliotekanauki.pl/articles/346919.pdf Link otwiera się w nowym oknie
Opis:: The experimental study on vortex activation method of reagent water purification from oil products and suspension particles using the alumosilicon flocculant-coagulant (ASFC) was made. The numerical model of water purification was suggested according to Smoluhovsky theory of coagulation kinetics.
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 3.

Tytuł:: Combined effect of carbonation and chloride aggression: degradation of reinforced concrete structures
Autorzy:: Kim, L. V.
Shalyi, E. E.
Leonovich, S. N.
Budrevich, N. A.
Tematy:: structure
concrete
corrosion
carbonation
chloride aggression
struktura
korozja
agresja chlorkowa
beton; Pokaż więcej
Wydawca:: Centrum Rzeczoznawstwa Budowlanego Sp. z o.o.
Powiązania:: https://bibliotekanauki.pl/articles/111117.pdf Link otwiera się w nowym oknie
Opis:: Corrosion reinforcement marine hydraulic structures due to chloride aggression and carboniza-tion of concrete leads to a sharp decrease in the safety of the structure. The steel reinforcement will be subjected to a so-called depassivation process, once the chloride concentration on surface exceeds a certain threshold concentration, or the pH value in the protective layer of concrete de-creases to a threshold value due to carbonation. Electrochemical reactions begin to occur with the formation of corrosion products with the penetration of oxygen on the steel reinforcement surface. This leads to cracking of the protective layer of concrete. It should also be taken into account that, due to corrosion mechanisms, the cross-sectional area of the reinforcement also decreases. The article suggests a method for predicting the complex degradation of reinforced concrete structures, taking into account various mechanisms of corrosion wear, which will allow developing effective ways to improve the durability and maintainability of structures operated in the marine environment.
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 4.

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

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Skocz do pozycji: 5.

Tytuł:: Maximum Hypergraphs without Regular Subgraphs
Autorzy:: Kim, Jaehoon
Kostochka, Alexandr V.
Tematy:: hypergraphs
set system
subgraph
regular graph; Pokaż więcej
Wydawca:: Uniwersytet Zielonogórski. Wydział Matematyki, Informatyki i Ekonometrii
Powiązania:: https://bibliotekanauki.pl/articles/30147226.pdf Link otwiera się w nowym oknie
Opis:: We show that an n-vertex hypergraph with no r-regular subgraphs has at most $2^{n−1}+r−2$ edges. We conjecture that if n > r, then every n-vertex hypergraph with no r-regular subgraphs having the maximum number of edges contains a full star, that is, $2^{n−1}$ distinct edges containing a given vertex. We prove this conjecture for n ≥ 425. The condition that n > r cannot be weakened.
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 6.

Tytuł:: On some Ordovician Scleractinia-like corals from the South Tien-Shan
Autorzy:: Erina, M.V.
Kim, I.
Wydawca:: Polska Akademia Nauk. Instytut Paleobiologii PAN
Powiązania:: https://bibliotekanauki.pl/articles/20852.pdf Link otwiera się w nowym oknie
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 7.

Tytuł:: Nasze szlachetne kłamstwa
Autorzy:: Severski, Vincent V. (1956- ).
Współwytwórcy:: Kim, Renata. Wywiad
Tematy:: Severski, Vincent V. (1956- ).
Literatura polska
Pisarze polscy
Powieść
Sensacja
Szpiegostwo
Wywiad polski; Pokaż więcej
Cytata wydawnicza:: Newsweek Polska 2018, nr 18/19, s. 124-127 1642-5685.
Dostawca treści:: Bibliografia

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Skocz do pozycji: 8.

Tytuł:: Possibility of the existence of charmed exotica
Autorzy:: Kim, Hyun-Chul
Praszałowicz, Michał
Polyakov, Maxim V.
Opis:: We employ the chiral quark-soliton model to describe excited baryons with one heavy quark. Identifying known charmed baryons with multiplets allowed by the model, we argue that apart from regular excitations of the ground-state multiplets, two out of five narrow $\Omega _{c}^{0}$ states, recently reported by the LHCb Collaboration, may correspond to the exotic pentaquarks. This interpretation can be easily verified experimentally, since exotic $\Omega _{c}^{0}$ states—contrary to the regular excitations—form isospin triplets rather than singlets.
Dostawca treści:: Repozytorium Uniwersytetu Jagiellońskiego

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Skocz do pozycji: 9.

Tytuł:: An application of the Negative Malmquist model for Vietnamese garment and textiles industry
Autorzy:: Nguyen, Thi Kim Lien
Nguyen, Xuan-Huynh
Pham, Hong V.
Tematy:: negative malmquist model
data envelopment analysis
garment and textile company
efficiency; Pokaż więcej
Wydawca:: STE GROUP
Powiązania:: https://bibliotekanauki.pl/articles/2175875.pdf Link otwiera się w nowym oknie
Opis:: The study purpose is to measure the performance of the Vietnamese garment and textiles industry by means of the Negative Malmquist model using the data envelopment analysis (DEA) method. The empirical results presented the efficient, inefficient cases, and average efficiency for all garment and textile companies in Vietnam during from 2016 to 2020. The main findings determined that five companies, including HTG, TET, MSH, M10, and BDG possessed efficiency scores in whole terms. An overall picture of the garment and textiles industry in Vietnam is used to evaluate the operational process. The research recommends a feasible alternative method to deal with inefficient cases.
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 10.

Tytuł:: Surface Treatment And Modification Of Graphene Using Organosilane And Its Thermal Stability
Obróbka powierzchniowa i modyfikacja grafenu przy użyciu organosilanu i jego stabilność termiczna
Autorzy:: Kim, D.-S.
Dhand, V.
Rhee, K.-Y.
Park, S.-J.
Tematy:: graphite
thermal properties
Raman spectroscopy
surface treatment
3-APTES
grafit
właściwości termiczne
spektroskopia Ramana
obróbka powierzchniowa; Pokaż więcej
Wydawca:: Polska Akademia Nauk. Czytelnia Czasopism PAN
Powiązania:: https://bibliotekanauki.pl/articles/354056.pdf Link otwiera się w nowym oknie
Opis:: In this study, graphene was functionalized via acid oxidation in the presence of a mixture of concentrated sulfuric acid and nitric acid. The oxidized graphene was silanized using the coupling agent, 3-aminopropyltriethoxsilane, resulting in functionalized graphene. The oxidized graphene and functionalized graphene were characterized by X-Ray diffraction, Fourier transform infrared spectroscopy, High-resolution micro Raman spectroscopy, thermogravimetric analysis, and atomic force microscopy to confirm the presence of functional moieties on the graphene surface. Thermal studies also demonstrate that the functionalized material is thermally stable up to higher temperatures.
Dostawca treści:: Biblioteka Nauki

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