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Wyszukujesz frazę "Han, Bing" wg kryterium: Autor


Wyświetlanie 1-4 z 4
Tytuł:
Protective effect of 6-shogaol against endotoxin-induced periodontitis in rats
Autorzy:
Qi, HongYan
Han, Bing
Powiązania:
https://bibliotekanauki.pl/articles/895573.pdf
Data publikacji:
2018-12-31
Wydawca:
Polskie Towarzystwo Farmaceutyczne
Tematy:
periodontitis
anti-oxidants
cathepsin D
β-glucuronidase
cathepsin B
6-Shogaol
Opis:
Periodontal diseases are the most prevalent bacterial ailments, affecting 10–15% of the global population, and eventually leading to tooth loss if left untreated. Shogaols obtained from ginger (Zingiber officinale) exhibit significant anti-inflammatory activity. However, the antibacterial potential of shogaols against periodontitis remains unexplored. Therefore, we investigated the effects of 6-shogaol (6-SH) on various factors responsible for periodontitis such as inflammation. Escherichia coli endotoxin was used to induce experimental periodontitis, and the effects of 6-SH on hydrogen peroxide, superoxide anion, myeloperoxidase activity, and lipid peroxides were estimated together with cathepsin B, cathepsin D, β-glucuronidase, acid phosphatase, and C-reactive protein activity in serum. In addition, the levels of ascorbic acid, α-tocopherol, ceruloplasmin, reduced glutathione, superoxide dismutase, catalase, glutathione peroxidase, and glutathione S-transferase were estimated in serum after 6-SH treatment. Reactive oxygen species and lipid peroxide levels were significantly reduced in the 6-SH-treated group. Moreover, lysosomal enzyme (cathepsin B, cathepsin D, β-glucuronidase and acid phosphatase) and acute-phase protein (C-reactive protein and fibrinogen) levels significantly declined after administration of 6-SH. Meanwhile, non-enzymatic antioxidant systems (e.g., ascorbic acid, α-tocopherol, ceruloplasmin, and reduced glutathione) and antioxidant enzymes (e.g., catalase, superoxide dismutase, glutathione peroxidase, and glutathione S-transferase) were significantly increased in the 6-SH-treated group. These results suggest a protective effect of 6-SH against experimental periodontitis via the regulation of key disease markers.
Źródło:
Acta Poloniae Pharmaceutica - Drug Research; 2018, 75, 6; 1391-1398
0001-6837
2353-5288
Pojawia się w:
Acta Poloniae Pharmaceutica - Drug Research
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Flow field characteristic analysis of cushion system of partial air cushion support catamaran in regular waves
Autorzy:
Yang, Jinglei
Sun, Han-bing
Li, Xiao-wen
Liu, Xin
Powiązania:
https://bibliotekanauki.pl/articles/32910719.pdf
Data publikacji:
2022
Wydawca:
Politechnika Gdańska. Wydział Inżynierii Mechanicznej i Okrętownictwa
Tematy:
regular waves
partial air cushion support catamaran (PACSCAT)
cushion system
fluid structure interaction (FSI)
flow field characteristics
Opis:
In order to study the flow field characteristics of cushion system of partial air cushion support catamaran (PACSCAT) in waves, an analysis was carried out involving flexible treatment on the bow and stern air seals to simulate air seal shape under test conditions by means of computational fluid dynamics method and fluid structure interaction (FSI) method. On this basis, the pressure conditions of the air cushion chamber and the pressurized chamber at different wavelengths and different speeds are studied and compared with experimental results. The experimental results show that: for the air cushion pressure, the nonlinear characteristics of the numerical calculation results are more subtle than the experimental values, after linear transformation, the amplitudes of the experimental values are obviously greater than the calculated values after linear transformation, but the average values are not much different; At low speed of 2.0m/s, the spatial pressure distribution of the pressurized chamber and the air cushion chamber are uniformly distributed, at high speed of 3.6m/s, except for a certain pressure jump occurred in the air cushion chamber near the stern air seal, the pressure in other spaces is also evenly distributed, it proves that the pressurized chamber type of air intake can effectively meet the air cushion pressure balance.
Źródło:
Polish Maritime Research; 2022, 3; 21-32
1233-2585
Pojawia się w:
Polish Maritime Research
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Flexible system for micro-clinching processes design and analysis
Elastyczny system do projektowania i analizy procesów mikro-klinczowania
Autorzy:
Presz, Wojciech
Bing-Yuan, Han
Powiązania:
https://bibliotekanauki.pl/articles/115161.pdf
Data publikacji:
2020
Wydawca:
Stowarzyszenie Inżynierów i Techników Mechaników Polskich
Tematy:
mikro-łączenie
mikro-klinczowanie
mikro-oprzyrządowanie elastyczne
modelowanie procesów
micro-joining
micro-clinching
flexible micro-tooling
process modelling
Opis:
With the development of microprocessors, actuators and structural micro-components, new concepts of micro-electro-mechanical systems/machines are constantly being introduced. One of the consequences of this tendency is seeking for best techniques to connect metal micro-components. Because of tools simplicity, no additional fastening parts and the undisturbed structure of the material, clinching appears to be a promising method for joining in micro-scale. A procedure for the analysis of micro-clinching process is proposed in the paper, and unique, support flexible tooling system designed. This system allows to easily change key parameters of the process. With the use of flexible micro-tooling, a successful micro-clinching of silver sheets of thickness 0.18 mm has been conducted. An effective numerical method - Rapid Numerical Strength Test - for modelling the process of tearing the joints has been presented. Compliance of key phenomena recognized in modelling with experimental results was obtained.
Wraz z rozwojem mikroprocesorów, siłowników i mikroskładników strukturalnych stale wprowadzane są nowe koncepcje systemów/maszyn mikroelektromechanicznych. Jedną z konsekwencji tej tendencji jest poszukiwanie najlepszych technik łączenia mikrokomponentów metalowych. Biorąc pod uwagę prostotę narzędzi, brak dodatkowych elementów mocujących i niezakłóconą strukturę materiału, klinczowanie wydaje się być obiecującą metodą łączenia w mikroskali. W artykule zaproponowano procedurę analizy procesu mikro-klinczowania oraz zaprojektowano unikalny, wspierający elastyczny system narzędziowy. System ten pozwala na łatwą zmianę kluczowych parametrów procesu. Dzięki zastosowaniu elastycznego mikro-oprzyrządowania przeprowadzono udane mikro-klinczowanie blach srebrnych o grubości 0,18 mm. Przedstawiono skuteczną metodę numeryczną - Rapid Numerical Strength Test - do modelowania procesu rozrywania złączy. Uzyskano zgodność kluczowych zjawisk rozpoznanych w modelowaniu z wynikami eksperymentalnymi.
Źródło:
Welding Technology Review; 2020, 92, 4; 31-45
0033-2364
2449-7959
Pojawia się w:
Welding Technology Review
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Dioscin improves survival in murine endotoxemia induced by Lipopolysaccharide
Autorzy:
Bing, Han
Jing, Lu
Meitong, Liu
Zhe, Feng
shuang, Guan
Powiązania:
https://bibliotekanauki.pl/articles/895519.pdf
Data publikacji:
2018-12-31
Wydawca:
Polskie Towarzystwo Farmaceutyczne
Tematy:
cytokines
survival
Endotoxemia
Dioscin
NF- қB
Opis:
Dioscin is a natural steroidal saponin mainly exacted from Dioscoreae Rhizoma, which usually used as traditional medicine in east asia area. Dioscin has various pharmacological actions. However, little is known concerning the role on Lipopolysaccharide (LPS)-induced endotoxemia. The aim of the present study was to investigate the effects and possible mechanisms of dioscin against LPS-induced endotoxemia in mice. The data showed dioscin significantly increased mouse survival when mice were treated with dioscin prior to or after LPS challenge and significantly attenuated TNF-α, IL-1β and IL-6 production in serum. Further studies revealed that dioscin could downregulate LPS-induced nuclear transcription factor - қB (NF-қB) signal transduction pathways. These observations indicated that dioscin modulated early cytokine responses by blocking NF-қB activation, and thus, increased mouse survival in murine endotoxemia induced by LPS.
Źródło:
Acta Poloniae Pharmaceutica - Drug Research; 2018, 75, 6; 1347-1352
0001-6837
2353-5288
Pojawia się w:
Acta Poloniae Pharmaceutica - Drug Research
Dostawca treści:
Biblioteka Nauki
Artykuł
    Wyświetlanie 1-4 z 4

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