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Wyszukujesz frazę "Shi, Ling" wg kryterium: Wszystkie pola


Wyświetlanie 1-4 z 4
Tytuł:
Synthesis of kaempferide Mannich base derivatives and their antiproliferative activity on three human cancer cell lines
Autorzy:
Nguyen, Van-Son
Shi, Ling
Luan, Fang-Qian
Wang, Qiu-An
Powiązania:
https://bibliotekanauki.pl/articles/1039003.pdf
Data publikacji:
2015
Wydawca:
Polskie Towarzystwo Biochemiczne
Tematy:
kaempferide
flavonoids
Mannich base derivatives
synthesis
antiproliferative activity
Opis:
Kaempferide (3,5,7-trihydroxy-4'-methoxyflavone, 1), a naturally occurring flavonoid with potent anticancer activity in a number of human tumour cell lines, was first semisynthesized from naringin. Based on Mannich reaction of kaempferide with various secondary amines and formaldehyde, nine novel kaempferide Mannich base derivatives 2-10 were synthesized. The aminomethylation occurred preferentially in the position at C-6 and C-8 of the A-ring of kaempferide. All the synthetic compounds were tested for antiproliferative activity against three human cancer cell lines (Hela, HCC1954, SK-OV-3) by the standard MTT method. The results showed that compounds 1, 2 and 5-10 were more potent against Hela cells with IC50 values of 12.47-28.24 μM than the positive control cis-platin (IC50 41.25 μM), compounds 5, 6, 8 and 10 were more potent against HCC1954 cells with IC50 values of 8.82-14.97 μM than the positive control cis-platin (IC50 29.68 μM), and compounds 2, 3, 5, 6 and 10 were more potent against SK-OV-3 cells with IC50 values of 7.67-18.50 μM than the positive control cis-platin (IC50 21.27 μM).
Źródło:
Acta Biochimica Polonica; 2015, 62, 3; 547-552
0001-527X
Pojawia się w:
Acta Biochimica Polonica
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Optimization the operation parameters of SDA desulfurization tower by flow coupling chemical reaction model
Autorzy:
Mei, Dan
Shi, Junjie
Zhu, Yuzheng
Xu, Xuemei
Xing, Futang
Shi, Ling
Powiązania:
https://bibliotekanauki.pl/articles/778336.pdf
Data publikacji:
2020
Wydawca:
Zachodniopomorski Uniwersytet Technologiczny w Szczecinie. Wydawnictwo Uczelniane ZUT w Szczecinie
Tematy:
spray drying absorber tower
gas-liquid two-phase flow
droplet diameter
desulfurization efficiency
amount of scaling
Opis:
Spray Drying Absorber (SDA) has been widely used for large-scale desulfurization. However, it also has some limitations. For example, the liquid absorbent easily causes scaling, which impedes the contact between the serous fluid and the flue gas and reduces the chemical reaction rate and desulfurization efficiency. This paper establishes the mathematical and physical model of gas and liquid two-phase flow and droplet evaporation and heat transfer in rotary spray desulfurization tower. To study the accumulation and distribution of chemical reaction precipitates in the desulfurization tower and analyze the removal efficiency of sulfur dioxide (SO2) in different atomization diameters, this paper establishes a simulation model concerning the coupling of desulfurization reaction and flow field calculation based on the absorption and reaction mechanism of SO2. Baffle in different widths are set to optimize the internal floweld and balance the distribution of flue gas. By setting baffles of different widths to optimize the flow feld in the tower and changing the distribution of flue gas, this model reduces the scaling while ensuring the desulfurization efficiency. The results of the simulation experiment have verified that the droplet with a diameter of 50 μm is the optimal option, which can effectively remove the scaling and ensure that the desulfurizing tower runs in high efficiency and stability. When the width of baffes is 2250 mm, the efficiency of desulfurization exceeds 95%, and the amount of scaling on the desulfurization tower main wall is controlled at the minimum level, which is the optimal option for production.
Źródło:
Polish Journal of Chemical Technology; 2020, 22, 1; 35-45
1509-8117
1899-4741
Pojawia się w:
Polish Journal of Chemical Technology
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Solutions of One-Dimensional Effective Mass Schrödinger Equation for PT-Symmetric Scarf Potential
Autorzy:
Zhang, A.
Shi, P.
Ling, Y.
Hua, Z.
Powiązania:
https://bibliotekanauki.pl/articles/1492765.pdf
Data publikacji:
2011-12
Wydawca:
Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:
03.65.Fd
03.65.Ge
03.65.-w
Opis:
The one-dimensional effective mass Schrödinger equation for PT-symmetric Scarf potential is investigated. The analytical expressions of energy eigenvalue and corresponding wave function are presented. They are accomplished by using an appropriate coordinate transformation to map the transformed exactly solvable one-dimensional Schrödinger equation with constant mass into the position-dependent mass equation. In the computation, three different forms of mass distributions are considered.
Źródło:
Acta Physica Polonica A; 2011, 120, 6; 987-991
0587-4246
1898-794X
Pojawia się w:
Acta Physica Polonica A
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Study on characteristics of three-dimensional granular meso-reconstruction of coal gangue roadbed
Autorzy:
Fan, Xiang-Xi
Hui, Bing
Ma, Shi-Jie
Fu, Jian-Cun
Zhang, Wen-Jun
Meng, Ling-Xiao
Sun, Zhi
Powiązania:
https://bibliotekanauki.pl/articles/2086979.pdf
Data publikacji:
2022
Wydawca:
Polskie Towarzystwo Mechaniki Teoretycznej i Stosowanej
Tematy:
coal gangue roadbed
particle flow
mesoscopic reconstruction
particle breakage
Opis:
The dynamic evolution process of the coal gangue particles’ core retention phenomenon in the process of crushing under stress, the evolution law of grading and the corresponding microscopic mechanical characteristics after continuous particle crushing are analyzed. The meso-level which reveals deformation phenomena of granular materials under the action of external loads is highly complex. At the qualitative level, the static compaction process of coal gangue samples can be roughly divided into three stages: initial compaction stage, compaction and crushing stage, and crushing (compaction) stage. It is proved that the interaction of lateral confined unidirectional compression of granular materials is mainly compression.
Źródło:
Journal of Theoretical and Applied Mechanics; 2022, 60, 3; 361--374
1429-2955
Pojawia się w:
Journal of Theoretical and Applied Mechanics
Dostawca treści:
Biblioteka Nauki
Artykuł
    Wyświetlanie 1-4 z 4

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