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Tytuł:
On traceability and 2-factors in claw-free graphs
Autorzy:
Fronček, Dalibor
Ryjáček, Zdeněk
Skupień, Zdzisław
Powiązania:
https://bibliotekanauki.pl/articles/744410.pdf
Data publikacji:
2004
Wydawca:
Uniwersytet Zielonogórski. Wydział Matematyki, Informatyki i Ekonometrii
Tematy:
traceability
2-factor
claw
degree condition
closure
Opis:
If G is a claw-free graph of sufficiently large order n, satisfying a degree condition σₖ > n + k² - 4k + 7 (where k is an arbitrary constant), then G has a 2-factor with at most k - 1 components. As a second main result, we present classes of graphs ₁,...,₈ such that every sufficiently large connected claw-free graph satisfying degree condition σ₆(k) > n + 19 (or, as a corollary, δ(G) > (n+19)/6) either belongs to $⋃ ⁸_{i=1} _i$ or is traceable.
Źródło:
Discussiones Mathematicae Graph Theory; 2004, 24, 1; 55-71
2083-5892
Pojawia się w:
Discussiones Mathematicae Graph Theory
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The structure and existence of 2-factors in iterated line graphs
Autorzy:
Ferrara, Michael
Gould, Ronald
Hartke, Stephen
Powiązania:
https://bibliotekanauki.pl/articles/743426.pdf
Data publikacji:
2007
Wydawca:
Uniwersytet Zielonogórski. Wydział Matematyki, Informatyki i Ekonometrii
Tematy:
line graph
2-factor
iterated line graph
cycle
Opis:
We prove several results about the structure of 2-factors in iterated line graphs. Specifically, we give degree conditions on G that ensure L²(G) contains a 2-factor with every possible number of cycles, and we give a sufficient condition for the existence of a 2-factor in L²(G) with all cycle lengths specified. We also give a characterization of the graphs G where $L^k(G)$ contains a 2-factor.
Źródło:
Discussiones Mathematicae Graph Theory; 2007, 27, 3; 507-526
2083-5892
Pojawia się w:
Discussiones Mathematicae Graph Theory
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The Chvátal-Erdős condition and 2-factors with a specified number of components
Autorzy:
Chen, Guantao
Gould, Ronald
Kawarabayashi, Ken-ichi
Ota, Katsuhiro
Saito, Akira
Schiermeyer, Ingo
Powiązania:
https://bibliotekanauki.pl/articles/743407.pdf
Data publikacji:
2007
Wydawca:
Uniwersytet Zielonogórski. Wydział Matematyki, Informatyki i Ekonometrii
Tematy:
Chvátal-Erdös condition
2-factor
hamiltonian cycle
Ramsey number
Opis:
Let G be a 2-connected graph of order n satisfying α(G) = a ≤ κ(G), where α(G) and κ(G) are the independence number and the connectivity of G, respectively, and let r(m,n) denote the Ramsey number. The well-known Chvátal-Erdös Theorem states that G has a hamiltonian cycle. In this paper, we extend this theorem, and prove that G has a 2-factor with a specified number of components if n is sufficiently large. More precisely, we prove that (1) if n ≥ k·r(a+4, a+1), then G has a 2-factor with k components, and (2) if n ≥ r(2a+3, a+1)+3(k-1), then G has a 2-factor with k components such that all components but one have order three.
Źródło:
Discussiones Mathematicae Graph Theory; 2007, 27, 3; 401-407
2083-5892
Pojawia się w:
Discussiones Mathematicae Graph Theory
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
EUCOMMIA ULMOIDES OLIV. EXTRACT REGULATES AGE-INDUCED INJURY IN TUBULAR ENDOTHELIAL CELLS VIA THE RAGE-NRF2 PATHWAY
Autorzy:
Hur, Jinyoung
Do, Moon Ho
Kim, Mina
Choi, Jiwon
Kim, Yoonsook
Ha, Sang Keun
Powiązania:
https://bibliotekanauki.pl/articles/895476.pdf
Data publikacji:
2019-08-30
Wydawca:
Polskie Towarzystwo Farmaceutyczne
Tematy:
diabetic nephropathy
advanced glycation end product
nuclear factor erythroid 2-related factor 2
Eucommia ulmoides
Opis:
The leaves, stems, and bark of Eucommia ulmoides Oliv. (EU), also known as Du-Zhong, have traditionally been used to cure various diseases, such as liver, kidney, and muscle diseases, in Asia. Despite evidence for protective effects against renal complications, its precise effects and mechanisms of action are unclear. In this study, the effects of EU on advanced glycation end products (AGEs)-induced renal disease and its mechanism were examined. NRK 52E normal rat kidney tubular epithelial cells were treated with AGEs and an EU extract. Expression levels of TGF-β1, an indicator of renal cell damage, and catalase, an antioxidant marker, were examined. Nuclear factor-E2-related factor 2 (Nrf2), kelch-like ECH-associated protein 1 (keap1), and p65 regulation were examined to identify additional antioxidant mechanisms related to renal cell apoptosis and AGEs-induced renal cell damage. The effects of EU on mitogen-activated protein kinase (MAPK), Akt, and phosphoinositide 3-kinase (PI3K), which are involved in apoptosis, were also examined. TGF-β1 expression increased in response to AGEs and decreased by additional treatment with EU. Additionally, EU increased the expression of catalase. We found that EU increased Nrf2, keap1, and p65 and regulated the expression of RAGE (receptor for AGEs) and its downstream target Sirt1. EU also regulated the AGEs-altered phosphorylation of apoptosis factors. Based on these findings, we concluded that EU regulates AGEs-induced renal cell damage via antioxidant and apoptosis-related mechanisms.
Źródło:
Acta Poloniae Pharmaceutica - Drug Research; 2019, 76, 4; 683-690
0001-6837
2353-5288
Pojawia się w:
Acta Poloniae Pharmaceutica - Drug Research
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Partitions of a graph into cycles containing a specified linear forest
Autorzy:
Matsubara, Ryota
Matsumura, Hajime
Powiązania:
https://bibliotekanauki.pl/articles/743517.pdf
Data publikacji:
2008
Wydawca:
Uniwersytet Zielonogórski. Wydział Matematyki, Informatyki i Ekonometrii
Tematy:
partition of a graph
vertex-disjoint cycle
2-factor
linear forest
Opis:
In this note, we consider the partition of a graph into cycles containing a specified linear forest. Minimum degree and degree sum conditions are given, which are best possible.
Źródło:
Discussiones Mathematicae Graph Theory; 2008, 28, 1; 97-107
2083-5892
Pojawia się w:
Discussiones Mathematicae Graph Theory
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
On a family of cubic graphs containing the flower snarks
Autorzy:
Fouquet, Jean-Luc
Thuillier, Henri
Vanherpe, Jean-Marie
Powiązania:
https://bibliotekanauki.pl/articles/744266.pdf
Data publikacji:
2010
Wydawca:
Uniwersytet Zielonogórski. Wydział Matematyki, Informatyki i Ekonometrii
Tematy:
cubic graph
perfect matching
strong matching
counting
hamiltonian cycle
2-factor hamiltonian
Opis:
We consider cubic graphs formed with k ≥ 2 disjoint claws $C_i ~ K_{1,3}$ (0 ≤ i ≤ k-1) such that for every integer i modulo k the three vertices of degree 1 of $C_i$ are joined to the three vertices of degree 1 of $C_{i-1}$ and joined to the three vertices of degree 1 of $C_{i+1}$. Denote by $t_i$ the vertex of degree 3 of $C_i$ and by T the set ${t₁,t₂,...,t_{k-1}}$. In such a way we construct three distinct graphs, namely FS(1,k), FS(2,k) and FS(3,k). The graph FS(j,k) (j ∈ {1,2,3}) is the graph where the set of vertices $⋃_{i = 0}^{i = k-1} V(C_i)∖T$ induce j cycles (note that the graphs FS(2,2p+1), p ≥ 2, are the flower snarks defined by Isaacs [8]). We determine the number of perfect matchings of every FS(j,k). A cubic graph G is said to be 2-factor hamiltonian if every 2-factor of G is a hamiltonian cycle. We characterize the graphs FS(j,k) that are 2-factor hamiltonian (note that FS(1,3) is the "Triplex Graph" of Robertson, Seymour and Thomas [15]). A strong matching M in a graph G is a matching M such that there is no edge of E(G) connecting any two edges of M. A cubic graph having a perfect matching union of two strong matchings is said to be a Jaeger's graph. We characterize the graphs FS(j,k) that are Jaeger's graphs.
Źródło:
Discussiones Mathematicae Graph Theory; 2010, 30, 2; 289-314
2083-5892
Pojawia się w:
Discussiones Mathematicae Graph Theory
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The effect of providing details to the model of a geological structure on the assessment of CO2 storage capacity
Autorzy:
Luboń, K. T.
Powiązania:
https://bibliotekanauki.pl/articles/184673.pdf
Data publikacji:
2016
Wydawca:
Akademia Górniczo-Hutnicza im. Stanisława Staszica w Krakowie. Wydawnictwo AGH
Tematy:
CO2 storage coefficient
CO2 storage efficiency factor
CO2 capacity
CCS
Opis:
Massive emissions of CO2 into the atmosphere are the most direct reason causing global warming and climate change, so more and more countries are starting to focus on carbon abatement technologies. In recent years, the method GCS (Geological Carbon Storage), injecting the CO2 in a supercritical state underground for storage, is considered the most effective way to reduce greenhouse gas emissions. Saline aquifers are given special attention because of its huge amount of storage and, therefore, a deep saline aquifer is the best choice for the storage of CO2. Exemplified by the well-explored Konary structure in the Polish Lowlands, results of assessments of CO2 storage capacity are compared for three cases: (1) a simplified formula based on averaged geological and reservoir parameters and (2) a model of the structure based on averaged geological and reservoir parameters (homogeneous model) and (3) a model of the structure with more detailed geological data (including those on clay interbeds in the sandstone series of the reservoir horizon – heterogeneous model). This allows the estimation of how providing of details of geological and reservoir data, introduced into the model, can affect the ability of CO2 migration within a reservoir horizon intended for CO2 storage, and, consequently, also obtain a more accurate assessment of the capacity that the structure is capable of attaining.
Źródło:
Geology, Geophysics and Environment; 2016, 42, 4; 449-458
2299-8004
2353-0790
Pojawia się w:
Geology, Geophysics and Environment
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The influence of selective COX-2 inhibitor on phase of healing surgical wounds: proliferation and secretion of bFGF by endothelial cells
Autorzy:
Jasiak, Łukasz
Kowalczyk, Mateusz
Mazan, Paula
Kowalczyk, Edward
Sienkiewicz, Monika
Jóźwiak-Bębnista, Marta
Wiktorowska-Owczarek, Anna
Powiązania:
https://bibliotekanauki.pl/articles/763865.pdf
Data publikacji:
2017
Wydawca:
Uniwersytet Marii Curie-Skłodowskiej. Wydawnictwo Uniwersytetu Marii Curie-Skłodowskiej
Tematy:
angiogenesis, selective COX-2 inhibitor, fibroblast growth factor, vascular endothelial cell
Opis:
The process of wound healing consists of the following phases: inflammation, proliferation, remodeling. Non-steroidal antiinflammatory drugs may be important in this process, especially in a stage called angiogenesis. For this reason, it was decided to investigate the effect of selective COX-2 (cyclooxygenase 2) inhibitor (NS-398) on the proliferation of endothelial cells and their ability to secrete bFGF (fibroblast growth factor) for vascular endothelial cells (HMEC-1). For determination of the secretion of bFGF in a cell line HMEC-1 immunosorbent ELISA assays were used. In turn, the cell proliferation assay was performed using the MTT method. Using MTT method, it was found that NS-398 at 10 μM did not affect cell viability. Whereas selective COX-2 inhibitor at 100 μM decreased cell viability in a statistically significant manner and inhibited the proliferative effect of 100 μg/mL LPS at concentrations of 10 and 100 μM. In the further step, application of NS-398 (10 and 100 μM) with LPS (100 μg/mL; inflammatory environment) reduced the secretion of bFGF in a statistically significant manner. The investigations showed that NS-398 has an antiangiogenic effect which is based on reducing the proliferation of vascular endothelial cells and inhibiting the secretion of bFGF- factor responsible for angiogenesis during wound healing.
Źródło:
Annales Universitatis Mariae Curie-Sklodowska, sectio C – Biologia; 2017, 72, 1
2083-3563
0066-2232
Pojawia się w:
Annales Universitatis Mariae Curie-Sklodowska, sectio C – Biologia
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Effect of Lambda-Cyhalothrin - An Insecticide from the Group of Synthetic Pyrethroids - on the Concentrations of NF-ĸB and VEGFR2 in the Liver of Albino Swiss Mice as Markers of its Damage
Wpływ lambda-cyhalothrin - insektycydu z grupy syntetycznych pyretroidów - na stężenia NF-ĸB i VEGFR2 w wątrobie myszy Albino Swiss jako markerów jego uszkodzenia
Autorzy:
Świerszcz, Łukasz
Roszkowska, Anna
Ruszel, Kinga
Wójciak-Czuła, Marta
Borzęcki, Andrzej
Nieradko-Iwanicka, Barbara
Siermontowski, Piotr
Powiązania:
https://bibliotekanauki.pl/articles/32703708.pdf
Data publikacji:
2021
Wydawca:
Polskie Towarzystwo Medycyny i Techniki Hiperbarycznej
Tematy:
lambda-cyhalothrin
nuclear factor ĸB
vascular endothelial growth factor2
liver damage
lambda-cyhalotryna
czynnik jądrowy ĸB
czynnik wzrostu śródbłonka naczyniowego 2
uszkodzenie wątroby
Opis:
Background: Lambda-cyhalothrin (LCH) is a one of the type II synthetic pyrethroids which is widely used in veterinary medicine and in agriculture to protect crops from pest insects. In previous studies, there are few reports about the influence of pyrethroids on the liver and its damage. Analyzing numerous publications, nuclear factor-ĸB (NF-ĸB) and vascular endothelial growth factor 2 (VEGFR2) seem to be sensitive indicators of microdamages occurring at the cellular level in the liver. The aim of the study was to investigate the effect of subacute poisoning with LCH on the concentration of NFĸB and VEGFR2 in the livers. Methods: The experiment was carried on 32 Albino Swiss mice (16 females and 16 males). The animals were divided into 4 groups. Controls received canola oil, the rest received LCH orally in oil at a dose of 2 mg/kg bw for 7 days. The NF-ĸB and VEGFR2 were mesuredin mice livers with ELISA kits. Results: The mean NF-ĸB concektration in control femals’ livers was 3.27ng/mL and after LCH it was 6.12ng/mL (p<0.05). In control males it was 5.49ng/mL and it did not significantly differ after LCH when it was 5.27ng/mL. The mean VEGFR2 in control females was 84.28ng/mL and after LCH it was 173.81ng/mL (p<0.05). In control males it was 170.61ng/mL and after LCH 170.06ng/mL. Conclusion:The NF-ĸB and VEGFR2 can be used as markers of liver damage after subacute poisoning with LCH on female mice. Females are more sensitive to LCH than males.
Wstęp: Lambda-cyhalotryna (LCH) jest jednym z syntetycznych pyretroidów typu II, szeroko stosowanym w weterynarii i rolnictwie do ochrony upraw przed owadami. We wcześniejszych badaniach niewiele jest doniesień o wpływie pyretroidów na wątrobę i jej uszkodzenia. Analizując liczne publikacje, czynnik jądrowy-ĸB (NF-ĸB) i czynnik wzrostu śródbłonka naczyniowego 2 (VEGFR2) wydają się być czułymi wskaźnikami mikrouszkodzeń występujących na poziomie komórkowym w wątrobie. Celem pracy było zbadanie wpływu podostrego zatrucia LCH na stężenie NFĸB i VEGFR2 w wątrobie. Metody: Doświadczenie przeprowadzono na 32 myszach Albino Swiss (16 samic i 16 samców). Zwierzęta podzielono na 4 grupy. Kontrolne grupy samic i samców otrzymywały olej rzepakowy, pozostałe otrzymywały LCH doustnie w oleju w dawce 2 mg/kg mc przez 7 dni. NF-ĸB i VEGFR2 były w wątrobach myszy były mierzone z użyciem zestawów ELISA. Wyniki: Średnie stężenie NF-ĸB w wątrobach kontrolnych samic wynosiło 3,27 ng/ml, a po LCH 6,12 ng/ml (p<0,05). U samców kontrolnych wynosił on 5,49 ng/ml i nie różnił się istotnie po LCH, gdzie wynosił 5,27 ng/ml. Średnie stężenie VEGFR2 u samic z grupy kontrolnej wynosił 84,28 ng/ml, a narażonych na LCH 173,81 ng/ml (p<0,05). U samców z grupy kontrolnej wynosiło 170,61 ng/ml, a narażonych na LCH 170,06 ng/ml. Wniosek: NF-ĸB i VEGFR2 można stosować jako markery uszkodzenia wątroby po podostrym zatruciu LCH u samic myszy. Samice są bardziej wrażliwe na LCH niż samce.
Źródło:
Polish Hyperbaric Research; 2021, 2(75); 57-68
1734-7009
2084-0535
Pojawia się w:
Polish Hyperbaric Research
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Assessment of the effect of the applied hydroxide additives on the fire properties of varnish coating systems with a damping mass
Autorzy:
Pauli, Wojciech
Wiecha, Karol
Milczarek, Danuta
Tarka, Izabela
Śliwiński, Cezary
Powiązania:
https://bibliotekanauki.pl/articles/26073432.pdf
Data publikacji:
2022
Wydawca:
Stowarzyszenie Menedżerów Jakości i Produkcji
Tematy:
właściwości ognia i dymu
właściwości mechaniczne
wodorotlenek glinu
wodorotlenek magnezu
plan współczynnika 2k
fire-smoke properties
mechanical properties
aluminium hydroxide
magnesium hydroxides
2k factor plan
Opis:
The article addresses the very important issue of enriching the products with additives improving the fire resistance properties. For this purpose, hydroxide additives (aluminium and magnesium) were used, which decompose at increased temperature to form water. When designing the experiments, one of the Experimental Design Methods (DOE) was used: 2k factorial design for two independent varia-bles. The enriched coatings were tested in accordance with the requirements of PN-EN 45545-2, incl. Intensity of heat release, lateral propagation of flame on products in vertical configuration, or testing of generated fumes and gases. Mechanical properties such as cohesion and impact toughness were also tested. The effectiveness of this type of additives was assessed, as well as their synergistic effect (due to the different decomposition temperature).
Źródło:
Production Engineering Archives; 2022, 28, 4; 359--368
2353-5156
2353-7779
Pojawia się w:
Production Engineering Archives
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
A Degree Condition Implying Ore-Type Condition for Even [2, b]-Factors in Graphs
Autorzy:
Tsuchiya, Shoichi
Yashima, Takamasa
Powiązania:
https://bibliotekanauki.pl/articles/31341635.pdf
Data publikacji:
2017-08-01
Wydawca:
Uniwersytet Zielonogórski. Wydział Matematyki, Informatyki i Ekonometrii
Tematy:
[ a, b ]-factor
even factor
2-edge-connected
minimum degree
Opis:
For a graph $G$ and even integers $ b \ge a \ge 2 $, a spanning subgraph $F$ of $G$ such that $ a \le \text{deg}_F (x) \le b $ and $ \text{deg}_F (x) $ is even for all $ x \in V (F) $ is called an even $[a, b]$-factor of $G$. In this paper, we show that a 2-edge-connected graph $G$ of order $n$ has an even $[2, b]$-factor if $ \text{max} \{ \text{deg}_G (x) , \text{deg}_G (y) \} \ge \text{max} \{ \frac{2n}{2+b} , 3 \} $ for any nonadjacent vertices $x$ and $y$ of $G$. Moreover, we show that for $ b \ge 3a$ and $a > 2$, there exists an infinite family of 2-edge-connected graphs $G$ of order $n$ with $ \delta (G) \ge a$ such that $G$ satisfies the condition $ \text{deg}_G (x) + \text{deg}_G (y) > \frac{2an}{a+b} $ for any nonadjacent vertices $x$ and $y$ of $G$, but has no even $[a, b]$-factors. In particular, the infinite family of graphs gives a counterexample to the conjecture of Matsuda on the existence of an even $[a, b]$-factor.
Źródło:
Discussiones Mathematicae Graph Theory; 2017, 37, 3; 797-809
2083-5892
Pojawia się w:
Discussiones Mathematicae Graph Theory
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Comparison of the oil recovery between waterflooding and CO2-EOR method for the JSt oil reservoir
Autorzy:
Kułynycz, V.
Janowski, P.
Powiązania:
https://bibliotekanauki.pl/articles/298755.pdf
Data publikacji:
2017
Wydawca:
Akademia Górniczo-Hutnicza im. Stanisława Staszica w Krakowie. Wydawnictwo AGH
Tematy:
waterflooding
CO2 injection
oil
recovery factor
Opis:
Exploitation of oil from the reservoir initially is performed by primary methods that use natural energy reserves, that allows for partial exploitation of geological resources (30%). Further oil resources depletion requires the implementation of appropriate methods to support exploitation, secondary methods, consist mainly in the physical oil displacement and third methods, in which additional types of energy aid the process of exploitation. The use of this methods may contribute up to a twofold increase in the degree of the geological resources depletion. One way to increase the exploitation is the injection of CO2 into the oil fields (CO2-EOR). This gas interacts physically and chemically on the reservoir rocks and oil contained in them, improving the conditions of its production. The technology of CO2 injection into the reservoir allows not only to increase oil production, but also gives the possibility of storing this gas in reservoirs, which is beneficial from the viewpoint of its impact on the environment. In the article was made a comparison of the oil recovery effectiveness between waterflooding and CO2-EOR method for Jastrząbka Stara reservoir. For this purpose, were made simulations of waterflooding and injecting CO2 for selected oil reservoir on the basis of the CO2PROPHET program. We analyzed different variants of injection of water and gas, both the amount of injected media, and the method of injection (only water, only gas, change injection of gas and water). Based on the results of modeling was estimated the amount of oil possible to extract by both methods and the recovery factor of the geological resources of the selected oil reservoir.
Źródło:
AGH Drilling, Oil, Gas; 2017, 34, 3; 787-797
2299-4157
2300-7052
Pojawia się w:
AGH Drilling, Oil, Gas
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The role of E2F2 in signaling pathways associated with cancer pathogenesis and potential treatment: A review of current studies
Autorzy:
Domańska, Julia
Poboży, Kamil
Domański, Paweł
Fudalej, Marta
Deptała, Andrzej
Badowska-Kozakiewicz, Anna
Powiązania:
https://bibliotekanauki.pl/articles/22792539.pdf
Data publikacji:
2023-07
Wydawca:
Medical Education
Tematy:
E2F2
E2F
cancer
transcription factor
oncology
p53
p21
Opis:
Introduction and objective. E2F transcription factor 2 (E2F2) protein is the transcription factor that plays an important role in tumorigenesis. E2F2 effects the cell cycle, tumor suppressor proteins, and can also be transformed by proteins of small DNA tumor viruses. The objective of the study is to provide a summary of the current knowledge on the neoplastic pathways that involve E2F2. State of knowledge. Numerous studies have demonstrated a role for E2F2 in various signaling pathways. Certain components of these pathways may serve as potential targets for oncological therapy. E2F2 has been shown to be associated with neoplasms of various locations and histological types (breast, colon, gastric, laryngeal, liver, lung, ovarian, pancreatic, and prostate cancers). Conclusions. Further investigations of E2F2 pathways are warranted for a clearer understanding of neoplastic processes and to identify novel pharmacological treatments.
Źródło:
OncoReview; 2023, 13, 2; 58-66
2450-6125
Pojawia się w:
OncoReview
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Mycielskians and matchings
Autorzy:
Doslić, Tomislav
Powiązania:
https://bibliotekanauki.pl/articles/744354.pdf
Data publikacji:
2005
Wydawca:
Uniwersytet Zielonogórski. Wydział Matematyki, Informatyki i Ekonometrii
Tematy:
Mycielskian
factor-critical graph
perfect matching
perfect 2-matching
Opis:
It is shown in this note that some matching-related properties of graphs, such as their factor-criticality, regularizability and the existence of perfect 2-matchings, are preserved when iterating Mycielski's construction.
Źródło:
Discussiones Mathematicae Graph Theory; 2005, 25, 3; 261-266
2083-5892
Pojawia się w:
Discussiones Mathematicae Graph Theory
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Wydzielanie CO2 z gazów przy zastosowaniu membran dyfuzyjno-rozpuszczalnościowych (PDMS)
CO2 separation form gas mixture using solution-diffusion membranes (PDMS)
Autorzy:
Janusz-Cygan, A.
Warmuziński, K.
Jaschik, M.
Tańczyk, M.
Powiązania:
https://bibliotekanauki.pl/articles/2073411.pdf
Data publikacji:
2010
Wydawca:
Stowarzyszenie Inżynierów i Techników Mechaników Polskich
Tematy:
współczynnik permeacji
współczynnik separacji
PDMS
wydzielanie CO2/N2
permeability coefficient
separation factor
CO2/N2
Opis:
Przeprowadzono badania eksperymentalne rozdziału mieszanin CO2/N22/N2
Experimental tests of 2/N2
Źródło:
Inżynieria i Aparatura Chemiczna; 2010, 4; 26-27
0368-0827
Pojawia się w:
Inżynieria i Aparatura Chemiczna
Dostawca treści:
Biblioteka Nauki
Artykuł
Wyświetlanie 1-15 z 44

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