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Tytuł:
GAP/DNTF Based PBX Explosives: a Novel Formula Used in Small Sized Explosive Circuits
Autorzy:
An, C.
Wen, X.
Wang, J.
Wu, B.
Powiązania:
https://bibliotekanauki.pl/articles/358581.pdf
Data publikacji:
2016
Wydawca:
Sieć Badawcza Łukasiewicz - Instytut Przemysłu Organicznego
Tematy:
explosive circuits
GAP/DNTF based PBX explosives
thermal stability
mechanical sensitivity
propagation reliability
detonation velocity
Opis:
With 3,4-dinitrofurazanofuroxan (DNTF) and glycidyl azide polymer (GAP) as the main explosive and binder respectively, GAP/DNTF based PBX explosives were designed, prepared and used to fill the small groove of some explosive circuits. The formulation was: DNTF 85 wt.%, GAP 11 wt.%, 2,4-toluene diisocyanate (TDI) and other additives making up the final 4 wt.%. After the uncured slurry mixture was prepared by uniform mixing, a squeezing device was used to charge the circuit groove (dimensions less than 1 mm × 1 mm). Scanning electron microscope (SEM) results showed a fine charging effect. Differential Scanning Calorimetry (DSC) was used to determine the energy of activation (Ea) and the pre-factor (A) of GAP/DNTF and these were compared with those for raw DNTF. The influences and causes of it have been investigated. The experimental results for propagation reliability showed that when the dimensions of the linear groove were 0.8 mm × 0.8 mm, 0.7 mm × 0.7 mm, 0.6 mm × 0.6 mm or 0.5 mm × 0.5 mm, GAP/DNTF based PBX explosives can propagate explosion successfully. Furthermore, the H50 and friction sensitivity of GAP/DNTF based PBX explosives were obtained using the following mechanical sensitivity experiments. These properties are vital if GAP/DNTF based PBX explosives are to be applied in complex explosive circuits.
Źródło:
Central European Journal of Energetic Materials; 2016, 13, 2; 397-410
1733-7178
Pojawia się w:
Central European Journal of Energetic Materials
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Study on the rheological properties of CL-20/HTPB casting explosives
Autorzy:
Li, H.-X..
Wang, J-Y.
An, C.-W.
Powiązania:
https://bibliotekanauki.pl/articles/358310.pdf
Data publikacji:
2014
Wydawca:
Sieć Badawcza Łukasiewicz - Instytut Przemysłu Organicznego
Tematy:
casting explosive
particle gradation
rheological properties
plasticizer
Opis:
The rheological properties of ε-2,4,6,8,10,12-hexanitro-2,4,6,8,10,12hexaazaisowurtzitane (CL-20)/hydroxy-terminated polybutadiene (HTPB) casting explosives with different formulations were tested and analyzed. The effects of both the weight percentage (wt.%) of CL-20 and its particle size, as well as the type and content of plasticizers, on the rheological properties of CL-20/HTPB casting explosives were investigated in detail. The results show that the viscosity and pseudoplasticity of CL-20/HTPB casting explosives increase with increasing wt.% of CL-20 and decreasing particle size. The gradation of CL-20 particle size also affects the rheological properties of the casting explosives. When the mixing ratio of 30 μm to 2 μm particles is 3:1, the viscosity reaches its lowest value and the non-Newtonian index reaches the maximum value of 0.5698. The viscosity, non-Newtonian index and impact sensitivity of the samples studied are clearly decreased by the addition of dioctyl adipate (DOA), dioctyl sebacate (DOS) or dibutyl phthalate (DBP). However, the three plasticizers do not appear to affect the thermal decomposition of CL-20/HTPB casting explosives. With respect to the rheological properties, mechanical properties and sensitivity, DOA is the optimum plasticizer to use in CL-20/HTPB casting explosives.
Źródło:
Central European Journal of Energetic Materials; 2014, 11, 2; 237-255
1733-7178
Pojawia się w:
Central European Journal of Energetic Materials
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
An Insensitive Booster Explosive: DAAF Surface-coated with Viton A
Autorzy:
Li, X.
Wu, B.
Liu, S.
An, C.
Wang, J.
Powiązania:
https://bibliotekanauki.pl/articles/358841.pdf
Data publikacji:
2018
Wydawca:
Sieć Badawcza Łukasiewicz - Instytut Przemysłu Organicznego
Tematy:
DAAF
refinement
surface-coated
thermal analysis
impact sensitivity
Opis:
3,3’-Diamino-4,4’-azoxyfurazan (DAAF) is the principal component of an insensitive booster explosive; refined DAAF and DAAF surface-coated with Viton A were prepared. Scanning electron microscopy (SEM), X-ray diffraction (XRD), and differential scanning calorimetry (DSC) were employed to characterize the morphology, composition, and thermal decomposition of these samples. The impact sensitivity and theoretical detonation velocity of DAAF-based composites were also measured and analyzed. The results showed that DAAF surface-coated with Viton A was successfully obtained, and the impact sensitivity of DAAF/Viton A composites was much lower than that of crude DAAF. In addition, DAAF/Viton A composites exhibited better thermal stability compared to crude DAAF and refined DAAF. The theoretical detonation velocity of DAAF/Viton A composites and TATB/Viton A composites are roughly the same. Therefore, there is still great potential for DAAF to be used as the main explosive component of a booster explosive.
Źródło:
Central European Journal of Energetic Materials; 2018, 15, 3; 445-455
1733-7178
Pojawia się w:
Central European Journal of Energetic Materials
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Process Optimization and Characterization of an HMX/Viton Nanocomposite
Autorzy:
Shi, X.
Wang, C.
Wang, J.
Li, X.
An, C.
Ji, W.
Powiązania:
https://bibliotekanauki.pl/articles/358667.pdf
Data publikacji:
2015
Wydawca:
Sieć Badawcza Łukasiewicz - Instytut Przemysłu Organicznego
Tematy:
HMX
spray drying
processing parameters
optimization
impact sensitivity
nanoparticles
Opis:
HMX/Viton A nanocomposites were prepared by a spray drying process using different processing parameters, which included the dry gas inlet temperature, the air flow rate, and the solution feed flow rate. Scanning electron microscopy (SEM) and X-ray diffraction (XRD) were used to characterize the nanocomposites. The effects of the processing parameters on the morphology of the samples were investigated and are discussed. The thermal decomposition behaviour and impact sensitivity of the raw HMX and HMX/Viton A nanocomposites were also measured and compared. Optimal morphology and dispersion of the coated samples was achieved when the dry gas inlet temperature and the air and solution feed flow rates were 55 °C, 660 L/h and 1.5 mL/min, respectively. Under these optimal processing conditions, the nanocomposites were spherical in shape, ranged from 0.2-2 μm in size, and were composed of many tiny particles of 50-100 nm in size. The crystal phase of the nanocomposites was the same as that of raw HMX. Compared with those of raw HMX, the melting point and impact sensitivity of the nanocomposites were lower and the thermal decomposition rate was slightly higher.
Źródło:
Central European Journal of Energetic Materials; 2015, 12, 3; 487-495
1733-7178
Pojawia się w:
Central European Journal of Energetic Materials
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Preparation and Characterization of Ultrafine HMX/TATB Explosive Co-crystals
Autorzy:
An, C.
Li, H.
Zhang, Y.
Ye, B.
Xu, C.
Wang, J.
Powiązania:
https://bibliotekanauki.pl/articles/358105.pdf
Data publikacji:
2017
Wydawca:
Sieć Badawcza Łukasiewicz - Instytut Przemysłu Organicznego
Tematy:
HMX
TATB
ultrafine co-crystals
ball milling
mechanical sensitivity
Opis:
An explosive co-crystal of 1,3,5,7-tetranitro-1,3,5,7-tetraazacyclooctane (HMX) and 1,3,5-triamino-2,4,6-trinitrobenzene (TATB) was prepared by the ball milling method. The raw materials and co-crystals were characterized using scanning electron microscopy (SEM), X-ray diffraction (XRD), differential scanning calorimetry (DSC) and Raman spectroscopy. Impact and friction sensitivity of the co-crystals were tested and analyzed. The results showed that the HMX/TATB co-crystals are spherical in shape and 100-300 nm in size. The co-crystals are different from anintimate mixture of HMX/TATB and they exhibit a new co-crystal structure. HMX/TATB co-crystals are formed by N-O···H hydrogen bonding between −NO2 (HMX) and −NH2 (TATB). The drop height of ultrafine HMX/TATB explosive co-crystals is 12.7 cm higher than that of ultrafine HMX, whilst the explosion probability of friction is 20% lower than that of ultrafine HMX. Ultrafine HMX/TATB explosive co-crystals are difficult to initiate under impact and friction conditions.
Źródło:
Central European Journal of Energetic Materials; 2017, 14, 4; 876-887
1733-7178
Pojawia się w:
Central European Journal of Energetic Materials
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Proteomics profiles reveal the potential roles of proteins involved in chicken macrophages stimulated by Lipopolysaccharide
Autorzy:
Li, S.
Chen, Y.
Xue, W.
Wang, Q.
Huai, Z.
An, C.
Wang, Y.
Powiązania:
https://bibliotekanauki.pl/articles/16647586.pdf
Data publikacji:
2023
Wydawca:
Polska Akademia Nauk. Czasopisma i Monografie PAN
Tematy:
chicken macrophage (HD11)
immune response
lipopolysaccharide (LPS)
proteomics
Opis:
Lipopolysaccharide (LPS), a core part of gram-negative bacteria, is crucial for inducing an inflammatory response in living things. In the current study, we used LPS from Salmonella to stimulate chicken macrophages (HD11). Proteomics was used to investigate immune-related proteins and their roles further. Proteomics investigation revealed 31 differential expression proteins (DEPs) after 4 hours of LPS infection. 24 DEPs expressions were up-regulated, while seven were down-regulated. In this investigation, ten DEPs were mainly enriched in S. aureus infection, complement, and coagulation cascades, which were all implicated in the inflammatory response and clearance of foreign pathogens. Notably, complement C3 was shown to be up-regulated in all immune-related pathways, indicating that it is a potential protein in this study. This work contributes to a better understanding and clarification of the processes of Salmonella infection in chickens. It might bring up new possibilities for treating and breeding Salmonella-infected chickens.
Źródło:
Polish Journal of Veterinary Sciences; 2023, 26, 2; 265-274
1505-1773
Pojawia się w:
Polish Journal of Veterinary Sciences
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Nielsen theory of transversal fixed point sets (with an appendix: $C^∞$ and $C^0$ fixed point sets are the same, by R. E. Greene)
Autorzy:
Schirmer, Helga
Powiązania:
https://bibliotekanauki.pl/articles/1214996.pdf
Data publikacji:
1992
Wydawca:
Polska Akademia Nauk. Instytut Matematyczny PAN
Tematy:
transversally fixed maps
minimal and arbitrary fixed point sets
Nielsen fixed point theory
relative and extension Nielsen numbers
Opis:
Examples exist of smooth maps on the boundary of a smooth manifold M which allow continuous extensions over M without fixed points but no such smooth extensions. Such maps are studied here in more detail. They have a minimal fixed point set when all transversally fixed maps in their homotopy class are considered. Therefore we introduce a Nielsen fixed point theory for transversally fixed maps on smooth manifolds without or with boundary, and use it to calculate the minimum number of fixed points in cases where continuous map extensions behave differently from smooth ones. In the appendix it is shown that a subset of a smooth manifold can be realized as the fixed point set of a smooth map in a given homotopy class if and only if it can be realized as the fixed point set of a continuous one. A special case of this result is used in a proof of the paper.
Źródło:
Fundamenta Mathematicae; 1992, 141, 1; 31-59
0016-2736
Pojawia się w:
Fundamenta Mathematicae
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
A compact set without Markovs property but with an extension operator for $C^∞$-functions
Autorzy:
Goncharov, Alexander
Powiązania:
https://bibliotekanauki.pl/articles/1287603.pdf
Data publikacji:
1996
Wydawca:
Polska Akademia Nauk. Instytut Matematyczny PAN
Opis:
We give an example of a compact set K ⊂ [0, 1] such that the space ℇ(K) of Whitney functions is isomorphic to the space s of rapidly decreasing sequences, and hence there exists a linear continuous extension operator $L: ℇ(K) → C^{∞}[0,1]$. At the same time, Markov's inequality is not satisfied for certain polynomials on K.
Źródło:
Studia Mathematica; 1996, 119, 1; 27-35
0039-3223
Pojawia się w:
Studia Mathematica
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Comments on the lexis of an early 18th c. manuscript East Slavic dictionary
Autorzy:
Fałowski, Adam
Powiązania:
https://bibliotekanauki.pl/articles/634511.pdf
Data publikacji:
2013
Wydawca:
Uniwersytet Jagielloński. Wydawnictwo Uniwersytetu Jagiellońskiego
Tematy:
history of East Slavic lexicography, unknown early 18th c. manuscript dictionary, typology of East Slavic lexis
Opis:
The paper discusses a little known manuscript dictionary dating from the beginning of the 18th c. that is stored in the manuscript division of the Jagiellonian Library (Ms.Slav. Qu. 28 Lexicon slavo-rutenicum). In actual fact we are dealing with a trilingual (East) Slavic-Latin-German dictionary, which is unfinished (barely reaching the end of letter “o”), and consists of 746 pages in quarto format. The author is thought to be French polyglot and orientalist, Mathurin Veyssière de La Croze. The primary objective of the paper is to discuss the typological-etymological and functional-stylistic typology of the East Slavic vocabulary included in the analysed lexicon. A preliminary overview of the Slavic lexis in the Slavic-Ruthenian Lexicon suggests that the dictionary of the past is worth publishing, so it would become available to a broader group studying the history of East Slavic languages.
Źródło:
Studia Linguistica Universitatis Iagellonicae Cracoviensis; 2013, 130, 1
2083-4624
Pojawia się w:
Studia Linguistica Universitatis Iagellonicae Cracoviensis
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
An Evaluation of Cu-B₄C Composites Manufactured by Powder Metallurgy
Autorzy:
Yener, T.
Altinsoy, I.
Yener, S.
Celebi Efe, G.
Ozbek, I.
Bindal, C.
Powiązania:
https://bibliotekanauki.pl/articles/1401279.pdf
Data publikacji:
2015-04
Wydawca:
Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:
81.05.Ni
81.20.Ev
72.80.Tm
Opis:
In this study, the influences of B₄C ratios on some mechanical and physical properties such as relative density, microhardness and electrical properties of cold pressed Cu-B₄C composites were investigated. Curve fitting is applied for the estimation of electrical conductivity. Commercial copper powders with 40 μm particle size were reinforced with B₄C, with particle size of 40 μm, at ratios of 1, 2, 3 wt.%, for improving mechanical properties of copper used as electrical conductor. Cu-B₄C composites have been fabricated by powder sintering process at a temperature of 900°C for 2 h. The presence of Cu and B₄C, which are dominant components in the sintered composites, were confirmed by X-ray diffraction analysis technique and SEM-EDS. Scanning electron microscope (SEM-EDS) has shown that B₄C particles are distributed homogenously in the copper matrix. The relative densities of Cu and Cu-B₄C composites, sintered at 900°C, ranged from 95.7 to 91.6%. Microhardness of composites ranged from 84.5 to 94.6 HB. It was observed that cold pressed Cu-1 wt.% B₄C composites revealed promising physical properties. Results of electrical conductivity measurement of Cu-B₄C composite material are compared to the results of the model and the overall accuracy level above 96% is obtained.
Źródło:
Acta Physica Polonica A; 2015, 127, 4; 1045-1047
0587-4246
1898-794X
Pojawia się w:
Acta Physica Polonica A
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
A Study of Vibrational Spectra of Fullerene $C_{70}$ and~$C_{80}$: An Algebraic Approach
Autorzy:
Sen, R.
Kalyan, A.
Subhra Paul, R.
Sarkar, N.
Bhattacharjee, R.
Powiązania:
https://bibliotekanauki.pl/articles/1493408.pdf
Data publikacji:
2011-09
Wydawca:
Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:
03.65.Fd
07.57.-c
02.20.Sv
78.30.Na
Opis:
Using the Lie algebraic method, the stretching vibrational energies of fullerenes $C_{70}$ and $C_{80}$ are calculated in the one-dimensional U(2) framework. By constructing the model Hamiltonian with the help of Casimir and Majorana invariant operators in this frame work, we calculated the local mode vibrational energy levels of the fullerenes $C_{70}$ and $C_{80}$.
Źródło:
Acta Physica Polonica A; 2011, 120, 3; 407-411
0587-4246
1898-794X
Pojawia się w:
Acta Physica Polonica A
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Wpływ spalania biomasy na pracę kotłów energetycznych
An influence of biomass c-firing for boilers operation
Autorzy:
Grądziel, S.
Majewski, K.
Powiązania:
https://bibliotekanauki.pl/articles/109176.pdf
Data publikacji:
2013
Wydawca:
AXIS MEDIA
Tematy:
biomasa
współspalanie
kotły energetyczne
mieszanka paliwowa
Opis:
Do niedawna utrzymywał się trend na współspalanie biomasy ze stałymi paliwami kopalnymi w dużych kotłach energetycznych zaprojektowanych w systemie jednopaliwowym. Eksploatacja jednostek dała szeroki wachlarz doświadczeń związanych z polepszeniem niektórych własności eksploatacyjnych, a także wystąpieniem tub przyśpieszeniem pojawienia się uszkodzeń i awarii związanych ze zmianą składu mieszanki paliwowej. Mieszanka paliwowa dwu i więcej składnikowa zawierająca biomasę ma bardzo zbliżony ilościowo udział składników, jednak inny skład chemiczny. Idą za tym zmiany różnych parametrów pracy jednostek. W pracy opisany został wpływ współspalania na różne aspekty pracy kotłów energetycznych: OP-210 i 0P-380 pracujących w polskich elektrowniach zawodowych.
A trend to co-fire biomass with solid fossil fuels in power boilers projected to mono-fuel system maintained for the last years. Exploitations gave an expe¬rience connected with increase some of the operation parameters. Moreover co-firing of biomass contribute to oc¬cur and accelerate damages and break¬downs connected with changes of fuel mix. Fuel mix which contains a biomass has the similar qualitative composition, but different chemical composition. Above mentioned differences biomass has an influence of boilers parameters. The paper describes co-firing influence at OP-210 and OP-380 boilers operation in polish power plants.
Źródło:
Piece Przemysłowe & Kotły; 2013, 5-6; 37-43
2082-9833
Pojawia się w:
Piece Przemysłowe & Kotły
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Crystallography and morphology of chromium rich eutectic carbides in an As-Cast Fe-Cr-C alloy crystallized in non-equilibrium conditions
Autorzy:
Wieczerzak, K.
Bała, P.
Tokarski, T.
Gajewska, M.
Powiązania:
https://bibliotekanauki.pl/articles/1111862.pdf
Data publikacji:
2016-10
Wydawca:
Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:
81.20.-n
81.30.Fb
81.70.-q
Opis:
The crystallography and microstructure of eutectic carbides crystallizing in non-equilibrium conditions in hypoeutectic Fe24Cr0.8C have been studied by light microscopy, scanning electron microscopy, and transmission electron microscopy. The alloy was synthesized in an arc furnace in high purity argon atmosphere and crystallized on water-cooled copper mould. Greater thermal gradient in regions close to water-cooled, copper mould in comparison with top of the ingot gives a formation of eutectic carbides with two morphologies: large polygonal carbides and surrounding them much smaller, plate-like carbides instead of rod-like carbides, observed in top of the ingot. There was no evidence for influence of non-equilibrium crystallization to the formation of types of carbides different than M₂₃C₆.
Źródło:
Acta Physica Polonica A; 2016, 130, 4; 1007-1009
0587-4246
1898-794X
Pojawia się w:
Acta Physica Polonica A
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Electrochemical Behaviour of $V_{2}O_{5}$ Xerogel and $V_{2}O_{5}$ Xerogel/C Composite in an Aqueous $LiNO_{3}$ and $Mg(NO_{3})_{2}$ Solutions
Autorzy:
Stojković, I.
Cvjetićanin, N.
Marković, S.
Mitrić, M.
Mentus, S.
Powiązania:
https://bibliotekanauki.pl/articles/1538117.pdf
Data publikacji:
2010-05
Wydawca:
Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:
82.47.Aa
71.20.Tx
82.45.Yz
82.80.Fk
65.40.gk
Opis:
We synthesized both the $V_{2}O_{5}$ xerogel and the composite $V_{2}O_{5}$ xerogel/C starting from the solution of $V_{2}O_{5}$ in hydrogen peroxide. After the characterization by XRD, thermal (TGA-DTA), SEM methods and by particle size analysis, the investigation of $Li^{+}$ and $Mg^{2+}$ intercalation/deintercalation reactions in an aqueous solutions of $LiNO_{3}$ and $Mg(NO_{3})_{2}$ were performed by cyclic voltammetry. The composite material $V_{2}O_{5}$ xerogel/C displayed relatively high intercalation capacity, amounting to 123 mA h $g^{-1}$ and 107 mA h $g^{-1}$, in lithium and magnesium salt solutions, respectively.
Źródło:
Acta Physica Polonica A; 2010, 117, 5; 837-840
0587-4246
1898-794X
Pojawia się w:
Acta Physica Polonica A
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Degradation of paper products from waste pulp types A, B and C with an addition of color pigments under the iinfluence of UV radiation and temperature
Degradacja wytworów papierniczych wytworzonych z makulatury typu A, B i C z dodatkiem pigmentów barwnych starzonych promieniowaniem UV
Autorzy:
Modzelewska, I.
Patelski, E.
Okon, P.
Powiązania:
https://bibliotekanauki.pl/articles/7592.pdf
Data publikacji:
2013
Wydawca:
Szkoła Główna Gospodarstwa Wiejskiego w Warszawie. Wydawnictwo Szkoły Głównej Gospodarstwa Wiejskiego w Warszawie
Źródło:
Annals of Warsaw University of Life Sciences - SGGW. Forestry and Wood Technology; 2013, 83
1898-5912
Pojawia się w:
Annals of Warsaw University of Life Sciences - SGGW. Forestry and Wood Technology
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Statki powietrzne Szkoły Orląt
Autorzy:
Bogusz, Dariusz.
Powiązania:
Przegląd Sił Zbrojnych 2020, nr 1, s. 54-59
Data publikacji:
2020
Tematy:
Lotnicza Akademia Wojskowa
Szkolnictwo wojskowe wyższe
Szkolenie lotnicze
Sprzęt lotniczy
Diamond DA-40 (samolot)
Antonov An-2 (samolot)
Diamond DA-42-VI Twin Star (samolot)
Diamond DA-20-C1 (samolot)
Guimbal Cabri G2 (śmigłowiec)
Zlin Aircraft 143-LSi (samolot)
Budowa i konstrukcje
Dane taktyczno-techniczne sprzętu wojskowego
Artykuł z czasopisma wojskowego
Opis:
Artykuł dotyczy sprzętu lotniczniczego Akademickiego Centrum Szkolenia Lotniczego Lotniczej Akademii Wojskowej. Do szkolenia lotniczego wykorzystywane są samoloty: Diamond DA-40, Antonov An-2, Diamond DA-20-C1, Zlin Aircraft 143-LSi i śmigłowiec Guimbal Cabri G2. Opisano ich budowę i dane taktyczno-techniczne.
Dostawca treści:
Bibliografia CBW
Artykuł
Tytuł:
Factorization of Montel operators
Autorzy:
Dierolf, S.
Domański, P.
Powiązania:
https://bibliotekanauki.pl/articles/1292530.pdf
Data publikacji:
1993
Wydawca:
Polska Akademia Nauk. Instytut Matematyczny PAN
Tematy:
Fréchet space
Fréchet-Montel space
complete LB-space
Montel LB-space
regular LB-space
Mackey completion of an LB-space
bornologicity of C(K,E)
Opis:
Consider the following conditions. (a) Every regular LB-space is complete; (b) if an operator T between complete LB-spaces maps bounded sets into relatively compact sets, then T factorizes through a Montel LB-space; (c) for every complete LB-space E the space C (βℕ, E) is bornological. We show that (a) ⇒ (b) ⇒ (c). Moreover, we show that if E is Montel, then (c) holds. An example of an LB-space E with a strictly increasing transfinite sequence of its Mackey derivatives is given.
Źródło:
Studia Mathematica; 1993, 107, 1; 15-32
0039-3223
Pojawia się w:
Studia Mathematica
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Interaction of an anticancer ruthenium complex HInd[RuInd2Cl4] with cytochrome c.
Autorzy:
Trynda-Lemiesz, Lilianna
Powiązania:
https://bibliotekanauki.pl/articles/1043344.pdf
Data publikacji:
2004
Wydawca:
Polskie Towarzystwo Biochemiczne
Tematy:
cytochrome c
Ruthenium(III) complexes
circular dichroism
apocytochrome c
Opis:
Cytochrome c is an important electron transfer protein in the respiratory chain, shuttling electrons from cytochrome c reductase to cytochrome c oxidase. Extensive chemical modification studies indicate significant electrostatic interactions between these proteins and show that all structural and conformational changes of cytochrome c can influence the electron transport. In the present work we examine the effect of an anticancer ruthenium complex, trans-Indazolium (bisindazole) tetrachlororuthenate(III) (HInd[RuInd2Cl4]), on the conformation of cytochrome c, the state of the heme moiety, formation of the protein dimer and on the folding state of apocytochrome c. For this purpose, gel-filtration chromatography, absorption second derivative spectroscopy, circular dichroism (CD) and inductively coupled plasma atomic emission spectroscopy (ICP(AES)) were used. The present data have revealed that binding of the potential anticancer drug HInd[RuInd2Cl4] complex to cytochrome c induces a conformation of the protein with less organized secondary and tertiary structure.
Źródło:
Acta Biochimica Polonica; 2004, 51, 1; 199-205
0001-527X
Pojawia się w:
Acta Biochimica Polonica
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Notes on binary trees of elements in \(C(K)\) spaces with an application to a proof of a theorem of H. P. Rosenthal
Autorzy:
Michalak, Artur
Powiązania:
https://bibliotekanauki.pl/articles/746576.pdf
Data publikacji:
2006
Wydawca:
Polskie Towarzystwo Matematyczne
Tematy:
\(C(K)\)-spaces
Opis:
A Banach space \(X\) contains an isomorphic copy of \(C([0, 1])\), if it contains a binary tree \((e_n)\) with the following properties (1) \(e_n = e_{2n} + e_{2n+1}\) and (2) \(c \max_{2^n\leq k\tl 2^{n+1}} |a_k| \leq \|\sum_{k=2^n}^{2^{n+1}-1} a_k e_k \leq C\max_{2^n\leq k\lt 2^{n+1}} |a_k|\) for some constants \(0\lt c \leq C\) and every \(n\) and any scalars \(a_{2^n},\dots, a_{2^{n+1}-1}\). We present a proof of the following generalization of a Rosenthal result: if \(E\) is a closed subspace of a separable \(C(K)\) space with separable annihilator and\(S\colon E \to X\) is a continuous linear operator such that \(S^{∗}\) has nonseparable range, then there exists a subspace \(Y\) of \(E\) isomorphic to \(C([0, 1])\) such that \(S|_Y\) is an isomorphism, based on the fact.
Źródło:
Commentationes Mathematicae; 2006, 46, 2
0373-8299
Pojawia się w:
Commentationes Mathematicae
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Influence of the Shape of an Explosive Charge: Quantification of the Modification of the Pressure Field
Autorzy:
Simoens, B.
Lefebvre, M.
Powiązania:
https://bibliotekanauki.pl/articles/358774.pdf
Data publikacji:
2015
Wydawca:
Sieć Badawcza Łukasiewicz - Instytut Przemysłu Organicznego
Tematy:
shape effect
emulsion explosive
C4
TNT
Opis:
Many scientific articles dealing with the detonation of explosive charges and their effects suppose that the charge is spherical and centrally initiated. Yet, when discussing the blast wave effect, the charge shape and the location of initiation could be as important as the composition or the mass of the considered explosive. Specifically, close to the charge, the shape may cause significant modifications of the pressure field compared to the predictions developed for spherical charges. Experiments have been carried out, using an emulsion explosive, TNT and C4, in order to quantify the shape effect. Unconfined, centrally initiated spherical and cylindrical charges with different length-to-diameter (L/D) ratios have been fired. The pressure in the median plane was recorded for different reduced distances. Results for spherical charges showed excellent agreement with well-known references. The expected change of the pressure field in the median plane of a cylindrical charge was observed, directly linked to the L/D ratio. Peak overpressure magnifications of up to almost 3 have been measured. The dimensions of the zone within which an increase of the blast wave effect is observed, have also been determined. A similar behaviour for TNT and C4 has been demonstrated; but a different behaviour has been observed for the emulsion explosive.
Źródło:
Central European Journal of Energetic Materials; 2015, 12, 2; 195-213
1733-7178
Pojawia się w:
Central European Journal of Energetic Materials
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
ZASADA RÓWNEGO DOSTĘPU DO OPIEKI ZDROWOTNEJ W PRZYPADKU OSADZONYCH CHORYCH NA WIRUSOWE ZAPALENIE WĄTROBY – ZARYS PROBLEMATYKI
THE PRINCIPLE OF EQUAL ACCESS TO HEALTH CARE FOR PRISONERS WITH HEPATITIS – AN OUTLINE OF THE ISSUE
Autorzy:
Sobas, Magdalena
Powiązania:
https://bibliotekanauki.pl/articles/443911.pdf
Data publikacji:
2018
Wydawca:
Wyższa Szkoła Humanitas
Tematy:
pozbawienie wolności,
WZW typu C,
świadczenia zdrowotne,
zasada równego dostępu do świadczeń zdrowotnych,
osadzony,
opieka zdrowotna,
pacjent
deprivation of liberty,
hepatitis C,
healthcare,
the principle of equal access to healthcare,
prisoner,
health benefits,
patient
Opis:
Niniejszy tekst podejmuje tematykę związaną z dostępem do świadczeń opieki zdrowotnej osób pozbawionych wolności, chorych na wirusowe zapalenie wątroby typu C. Stanowi próbę podjęcia rozważań związanych z konstytucyjnymi zasadami: godności człowieka, prawem do życia, ochrony zdrowia i równego dostępu do świadczeń opieki zdrowotnej finansowanej ze środków publicznych w zakresie rzeczywistych możliwości ich realizacji w stosunku do osadzonych chorych na WZW typu C i systemu więziennej opieki medycznej. Tekst wskazuje również główne przyczyny utrudnionej dostępności do diagnostyki i leczenia chorych na WZW typu C więźniów.
This text addresses topics related to access to healthcare services for prisoners with hepatitis C. It is an attempt to consider the constitutional principles of human dignity, the right to life, health protection and equal access to healthcare services. Following article defines the possibility of the actual implementation of these principles in relation to prisoners with hepatitis C. The text also indicates the main causes of decreased accessibility to the diagnosis and treatment of hepatitis C patients.
Źródło:
Roczniki Administracji i Prawa; 2018, 1, XVIII; 201-218
1644-9126
Pojawia się w:
Roczniki Administracji i Prawa
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
An Analysis of Active Regions 11036 Characteristics Leads To Solar Flare Class C7.2 Phenomena
Autorzy:
Zainol, N. H.
Hamidi, Z. S.
Husien, Nurulhazwani
Ali, M. O.
Sabri, S. N. U.
Shariff, N. N. M.
Faid, M. S.
Monstein, C.
Ramli, Nabilah
Powiązania:
https://bibliotekanauki.pl/articles/1192106.pdf
Data publikacji:
2016
Wydawca:
Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
Tematy:
Solar Radio Burst Type II
solar flare
Callisto network
active region
Opis:
The solar flares are generated from electromagnetic radiation which is sudden oscillation of the stored energy in the magnetic field of the sun. Flares are categorized according to their brightness as C, M and X, where X is the brightest. The X class flares caused a long-time solar storm and ionospheric radio waves sparkling. The moderate level M class flares mostly effect polar cups and cause short-time radio sparkling. However, the C class flares are weaker than the X and M flares. In this work, we present an active region from the disturbance of magnetic field on the area of the Sun and may lead to powerful event if the magnetic field become stronger. The CALLISTO system network that has been installed in Gauri, India observed data that contain Solar Radio Burst Type II (SRBT II) occurred on 22nd December 2009 at 04:57 UT to 05:02 UT. Five active regions were obtained from online data via internet from the Space Weather website and the Solar Monitor website. All data and information from these sources assist in analyze of the phenomena. The magnetic field and X-ray flux, proton density increase the possibilities that SRBT II observed by CALLISTO network to generate powerful solar flare. When X-ray flux level was at maximum, then solar flare was at peak point. However, solar activity level was low because among of five active regions present, only one C-class flare event occurred. The most active region that contributes this event is an AR11036 with C-class flare.
Źródło:
World Scientific News; 2016, 45, 2; 80-91
2392-2192
Pojawia się w:
World Scientific News
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
On an almost pure sieve
Autorzy:
Hooley, C.
Powiązania:
https://bibliotekanauki.pl/articles/1391627.pdf
Data publikacji:
1994
Wydawca:
Polska Akademia Nauk. Instytut Matematyczny PAN
Źródło:
Acta Arithmetica; 1994, 66, 4; 359-368
0065-1036
Pojawia się w:
Acta Arithmetica
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
J. C. Beall, Bas C. Van Fraassen, Possibilities and Paradox. An Introduction to Modal and Many-Valued Logic
J. C. Beall, Bas C. Van Fraassen, Possibilities and Paradox. An Introduction to Modal and Many-Valued Logic, Oxford University Press 2003, pp. 233. ISBN 0199259879 (10987654321)
Autorzy:
Lechniak, Marek
Powiązania:
https://bibliotekanauki.pl/articles/2013302.pdf
Data publikacji:
2007
Wydawca:
Katolicki Uniwersytet Lubelski Jana Pawła II. Towarzystwo Naukowe KUL
Źródło:
Roczniki Filozoficzne; 2007, 55, 2; 240-244
0035-7685
Pojawia się w:
Roczniki Filozoficzne
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
An Ant Colony Algorithm for efficient ship routing
Autorzy:
Tsou, M.-C.
Cheng, H.-C.
Powiązania:
https://bibliotekanauki.pl/articles/258892.pdf
Data publikacji:
2013
Wydawca:
Politechnika Gdańska. Wydział Inżynierii Mechanicznej i Okrętownictwa
Tematy:
ship routing
Ant Colony Algorithm
GIS
weather routing
Opis:
With the substantial rising of international oil price and global warming on the rise, how to reduce operational fuel consumption and decrease air pollution has become one of the pursued goals of green ship. Ship route planning is an indispensible part of the ship navigation process, especially in transoceanic crossing ship routing. The soundness of ship routing not only affects the safety of ship navigation but also the operation economy and environmental protection. This research is based on the platform of Electronic Chart Display and Information System (ECDIS), and founded on Ant Colony Algorithm (ACA) combined with the concept of Genetic Algorithm (GA), to model living organisms optimization behaviour to perform efficient ship route planning in transoceanic crossing. Besides the realization of route planning automation, ship routing will achieve the goal of optimum carbon dioxide reduction and energy conservation, and provide reference for route planning decision.
Źródło:
Polish Maritime Research; 2013, 3; 28-38
1233-2585
Pojawia się w:
Polish Maritime Research
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Approximation of Large-Scale Dynamical Systems: an Overview
Autorzy:
Antoulas, A. C.
Sorensen, D. C.
Powiązania:
https://bibliotekanauki.pl/articles/908058.pdf
Data publikacji:
2001
Wydawca:
Uniwersytet Zielonogórski. Oficyna Wydawnicza
Tematy:
aproksymacja
system dynamiczny
model reduction
SVD
Hankel
balancing
Krylov
Opis:
In this paper we review the state of affairs in the area of approximation of large-scale systems. We distinguish three basic categories, namely the {SVD}-based, the {Krylov}-based and the {SVD-Krylov}-based approximation methods. The first two were developed independently of each other and have distinct sets of attributes and drawbacks. The third approach seeks to combine the best attributes of the first two.
Źródło:
International Journal of Applied Mathematics and Computer Science; 2001, 11, 5; 1093-1121
1641-876X
2083-8492
Pojawia się w:
International Journal of Applied Mathematics and Computer Science
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Agency in an AI Avalanche: Education for Citizen Empowerment
Autorzy:
Boyte, Harry C.
Ström, Marie-Louise
Powiązania:
https://bibliotekanauki.pl/articles/451299.pdf
Data publikacji:
2020-08-05
Wydawca:
Uniwersytet Warszawski. Wydział Filozofii
Opis:
Preview: In this essay, drawing on the case of Australia in particular, we develop the argument of “schools for democracy” as part of communities that prioritize developing people’s civic agency for human flourishing. We begin with the concept of social capital – norms, values, and practices of trust and reciprocity essential to vibrant civic life and healthy democratic society – and discuss social capital’s decline in recent years as well as its relationship to what we call public work. Declining social capital and growing demands for politicians and experts to “fix things” turn citizens into spectators, largely devoid of responsibility for addressing public challenges like AI and erode hope for the future. Here, we concentrate mainly on a specific danger related to this dynamic that threatens the cultural and social foundations of democracy and is directly connected to schools and their potential for addressing the danger: In the context of declining community life, social media and other digital platforms shaped by AI can spread an “us-versus-them” mindset that feeds polarization and inflamed divisions, far beyond the formal electoral system.
Źródło:
Eidos. A Journal for Philosophy of Culture; 2020, 4, 2; 142-161
2544-302X
Pojawia się w:
Eidos. A Journal for Philosophy of Culture
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
An overview of maritime pine private non-industrial forest in the centre of Portugal: A 19-year case study
Autorzy:
Alegria, C.
Teixeira, M.C.
Powiązania:
https://bibliotekanauki.pl/articles/38521.pdf
Data publikacji:
2016
Wydawca:
Instytut Badawczy Leśnictwa
Źródło:
Folia Forestalia Polonica. Series A . Forestry; 2016, 58, 4
0071-6677
Pojawia się w:
Folia Forestalia Polonica. Series A . Forestry
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
An ε-Insensitive Approach to Fuzzy Clustering
Autorzy:
Łęski, J.
Powiązania:
https://bibliotekanauki.pl/articles/908067.pdf
Data publikacji:
2001
Wydawca:
Uniwersytet Zielonogórski. Oficyna Wydawnicza
Tematy:
programowanie
metoda grupowania
fuzzy clustering
fuzzy c-means
robust methods
varepsilon-insensitivity
fuzzy c-medians
Opis:
Fuzzy clustering can be helpful in finding natural vague boundaries in data. The fuzzy c-means method is one of the most popular clustering methods based on minimization of a criterion function. However, one of the greatest disadvantages of this method is its sensitivity to the presence of noise and outliers in the data. The present paper introduces a new varepsilon-insensitive Fuzzy C-Means (varepsilonFCM) clustering algorithm. As a special case, this algorithm includes the well-known Fuzzy C-Medians method (FCMED). The performance of the new clustering algorithm is experimentally compared with the Fuzzy C-Means (FCM) method using synthetic data with outliers and heavy-tailed, overlapped groups of the data.
Źródło:
International Journal of Applied Mathematics and Computer Science; 2001, 11, 4; 993-1007
1641-876X
2083-8492
Pojawia się w:
International Journal of Applied Mathematics and Computer Science
Dostawca treści:
Biblioteka Nauki
Artykuł
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