Autor: An, T. - Katalog OPAC zbiorów

Skocz do pozycji: 1.

Tytuł:: Unravelling the Effect of Anthraquinone Metal Salts as Wide-range Plateau Catalysts to Enhance the Combustion Properties of Solid Propellants
Autorzy:: Wang, Y.
Yan, Q.-L.
An, T.
Chen, B.
Ji, Y.-P.
Wang, W.
Zhao, F.
Powiązania:: https://bibliotekanauki.pl/articles/358042.pdf
Data publikacji:: 2018
Wydawca:: Sieć Badawcza Łukasiewicz - Instytut Przemysłu Organicznego
Tematy:: solid propellants
burning rate catalysts
anthraquinone metal salts
wide-range plateau combustion
Opis:: Novel lead and copper salts based on anthraquinone, including 1,8-dihydroxyanthraquinone,1,4,5,8-tetrahydroxyanthraquinone and 1,8-dihydroxy-4,5-dinitroanthraquinone, were prepared and characterized by Fourier transform infrared spectroscopy (FTIR), elemental analysis (EA), and X-ray fluorescence (XRF). The catalytic effects of these compounds on the decomposition of nitrocellulose (NC) and on the combustion properties of double-base (DB) and composite modified double-base (CMDB) propellants were comprehensively investigated. The results demonstrated that the burning rate is significantly increased (by 200%) in the lower pressure range (2-6 MPa) as compared to the control systems without added anthraquinone-based salts. Concurrently, the pressure exponents (n) were obviously lower, exhibiting a “wide-range plateau” combustion phenomenon in the middle-pressure region. Specifically, for the DB propellants such a plateau region extended from 10 MPa to 16 MPa for n equal to 0.10, from 10 MPa to 18 MPa for n equal to 0.11 and from 8 MPa to 18 MPa when n is 0.05. In the case of RDX-CMDB propellants, the plateau was found to be in the range 6-18 MPa, with n in the range 0.16-0.27, depending on the type of catalyst, in contrast to the reference CMDB sample, which was characterized by n equal to 0.7 for the same pressure range.
Źródło:: Central European Journal of Energetic Materials; 2018, 15, 2; 376-390
1733-7178
Pojawia się w:: Central European Journal of Energetic Materials
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 2.

Tytuł:: Do jasmonic acid and activated charcoal increase the in vitro development of orange carrot (Daucus carota L. subsp. sativus Hoffm.) and purple carrot (Daucus carota L. ssp. sativus var. atrorubens Alef.)?
Autorzy:: Ozsan, T.
Vural, E.G.
Onus, A.N.
Powiązania:: https://bibliotekanauki.pl/articles/12693658.pdf
Data publikacji:: 2020
Wydawca:: Uniwersytet Przyrodniczy w Lublinie. Wydawnictwo Uniwersytetu Przyrodniczego w Lublinie
Źródło:: Acta Scientiarum Polonorum. Hortorum Cultus; 2020, 19, 5; 115-127
1644-0692
Pojawia się w:: Acta Scientiarum Polonorum. Hortorum Cultus
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 3.

Tytuł:: Links between biota and climate-related variables in the Baltic region using Lake Onega as an example
Autorzy:: Sharov, A.N.
Berezina, N.A.
Nazarova, L.E.
Poliakova, T.N.
Chekryzheva, T.A.
Powiązania:: https://bibliotekanauki.pl/articles/47637.pdf
Data publikacji:: 2014
Wydawca:: Polska Akademia Nauk. Instytut Oceanologii PAN
Tematy:: Baltic Sea
catchment area
climate variability
water temperature
phytoplankton
benthos
zoobenthos
chlorophyll a
Lake Onega
Źródło:: Oceanologia; 2014, 56, 2
0078-3234
Pojawia się w:: Oceanologia
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 4.

Tytuł:: Multi-variant Sorption Optimization for the Uptake Of Pb(II) Ions by Jamun Seed Waste
Autorzy:: Siyal, A.N.
Memon, S.Q.
Amanullah, M.
Pirzada, T.
Parveen, S.
Powiązania:: https://bibliotekanauki.pl/articles/779346.pdf
Data publikacji:: 2013
Wydawca:: Zachodniopomorski Uniwersytet Technologiczny w Szczecinie. Wydawnictwo Uczelniane ZUT w Szczecinie
Tematy:: optimization
Pb(II) ions removal
Jamun seed waste
response surface methodology
Factorial Design Approach
Opis:: In the present study, jamun seed waste has been explored for the removal of Pb(II) ions from aqueous solution. The multi-variant sorption optimization was achieved by the factorial design approach. 99.91% of Pb(II) ions was removed from aqueous solution. The results predicted by the model were in good agreement with the experimental results (the values of R2 and R2 adj. were found to be 99.89% and 99.95%, respectively). Langmuir and D-R isotherm studies were carried out to fi nd adsorbent's capacities (183.9 š 0.31 mg/g and 184.5 š 0.16 mg/g respectively), sorption free energy 13.17 š 0.16 and RL values in the range of 0.05-0.77, suggested the favorable chemical and/or ion exchange nature of the sorption process. The FT-IR study was carried out for unloaded and Pb(II) ions loaded jamun seed, indicated, Pb(II) ions associated with nitrogen and oxygen of jamun seed containing moieties during the adsorption process. The proposed method was successfully validated and applied for the treatment of Pb(II) ions contaminating drinking water.
Źródło:: Polish Journal of Chemical Technology; 2013, 15, 1; 15-21
1509-8117
1899-4741
Pojawia się w:: Polish Journal of Chemical Technology
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 5.

Tytuł:: The preference of sexual transmission of Borrelia garinii by males of Ixodes persulcatus ticks [Acari, Ixodidae]
Autorzy:: Alekseev, A.N.
Dubinina, H.V.
Rijpkema, S.G.T.
Schoul, L.M.
Powiązania:: https://bibliotekanauki.pl/articles/837782.pdf
Data publikacji:: 1998
Wydawca:: Polskie Towarzystwo Parazytologiczne
Tematy:: Borrelia garinii
Ixodidae
sexual transmission
male
Acari
Ixodes persulcatus
female
Borrelia afzelii
tick
Źródło:: Annals of Parasitology; 1998, 44, 3
0043-5163
Pojawia się w:: Annals of Parasitology
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 6.

Tytuł:: Cyclic movement execution and its influence on motor programmess
Autorzy:: Dornowski, M.
Gorkovenko, A.
Tomiak, T.
Mishchenko, V.S.
Wilczyńska, D.
Olszewski, H.
Sawicki, P.
Talnov, A.N.
Powiązania:: https://bibliotekanauki.pl/articles/2083070.pdf
Data publikacji:: 2019
Wydawca:: Instytut Medycyny Wsi
Tematy:: locomotion
mechanics
water sport
environment
rural and urban areas
Opis:: Objectives. The aim of this study was to discover the relationship between the performance of different mechanical movements of rowers, and define its effect on the motor programs of the cyclic movement in athletes living in rural and urban areas. Materials and method. Twenty-two male rowers participated in the experiment using a rowing ergometer (Concept2, USA). The experiment consisted of 3 tests examining the maximal power of the pull-ups (MPbpu). The movement mechanogram was registered with a specialized complex Noraxon’s 3D MyoMotion (Noraxon Inc., USA). The software of the complex allowed calculation of the values of the joint angles from the accelerometer data. The Origin Lab 8.5 program was used for the mathematical and statistical processing of the signals from the mechanograms. Results. It was found that all experiment participants had a stepped controlled increase in the power of single bar pull-ups leading to a corresponding proportional increase in the frequency of rowing – test 1 and, conversely, a stepped controlled increase in the rowing frequency accompanied by a proportional increase in the power of the bar pull-ups – test 2. The involuntary dependence of the power and the rate was due to the peculiarities of the central cyclic movement programming, according to which the forces and durations of the active and passive bar pull-ups phases were interconnected and regulated together. The voluntary power-rate dependence control led to the breakdown of these links in the motor program of cyclic movements and to the separate control of these parameters. Conclusions. Motor programs in cyclic movement may be created in the same pattern in tope level sport and recreation, as well in different environmental conditions – gym halls (movement simulators), professional and recreational water sport tracks.
Źródło:: Annals of Agricultural and Environmental Medicine; 2019, 26, 2; 361-368
1232-1966
Pojawia się w:: Annals of Agricultural and Environmental Medicine
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 7.

Tytuł:: Obtaining of metallic nanoparticles by plasma-erosion electrical discharges in liquid mediums for biological application
Uzyskiwanie nanocząstek metali poprzez wyładowania elektryczne w zakresie erozji plazmy w środowisku wodnym w zastosowaniach biologicznych
Autorzy:: Lopatko, K.G.
Melnichuk, M.D.
Aftandilyants, Y.G.
Gonchar, E.N.
Boretskij, V.F.
Veklich, A.N.
Zakharchenko, S.N.
Tugay, T.I.
Tugay, A.V.
Trach, V.V.
Powiązania:: https://bibliotekanauki.pl/articles/56253.pdf
Data publikacji:: 2013
Wydawca:: Szkoła Główna Gospodarstwa Wiejskiego w Warszawie. Wydawnictwo Szkoły Głównej Gospodarstwa Wiejskiego w Warszawie
Tematy:: metallic nanoparticle
nanoparticle
biological function
plasma
electrical discharge
liquid medium
biological application
Opis:: Obtaining of metallic nanoparticles by plasma-erosion electrical discharges in liquid mediums for biological application. The process of electrical discharge in the water of the plasma discharge channel was investigated and its diagnostics was performed. The specific features of the energy redistribution were shown, together with the physical model of the dispersed phase. The biological functionality of the metal nanoparticles and the prospects for their use in biotechnology were found.
Uzyskiwanie nanocząstek metali poprzez wyładowania elektryczne w zakresie erozji plazmy w środowisku wodnym w zastosowaniach biologicznych. Przeprowadzono badania wyładowań elektrycznych w środowisku wodnym w celu uzyskania nanocząstek metali. Określono specyficzne cechy redystrybucji energii oraz przedstawiono fizyczny model fazy rozproszonej. Określono funkcjonalność biologiczną nanocząsteczek metali oraz perspektywy ich wykorzystania w biotechnologii.
Źródło:: Annals of Warsaw University of Life Sciences - SGGW. Agriculture; 2013, 61 Agric.Forest Eng.
0208-5712
Pojawia się w:: Annals of Warsaw University of Life Sciences - SGGW. Agriculture
Dostawca treści:: Biblioteka Nauki

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