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Anti-allergic Effects and Related Active Constituents of Mung Bean (Vignaradiatus Linn) Sprouts
Li Li,Min-hui Li,Han-kun Ren,Yujing Shi,Yin-mao Dong 한국식품과학회 2016 Food Science and Biotechnology Vol.25 No.2
The mung bean (Vigna radiata) is an important food crop with preventative effects against human diseases. The anti-allergic activities of mung bean sprouts of different lengths were evaluated by assaying in vivo antipruritic activity and in vitro hyaluronidase inhibitory effects. After 48 h of growth, sprouts were determined to have the best activity and extracted with petroleum (PeF), ethyl acetate (EaF), and n-butanol (nBF). The active EaF extracts were further assayed for in vivo effects on compound 48/80-induced mast cell degranulation and histamine release, as well as the antidinitrophenyl (DNP) IgE-induced passive cutaneous anaphylaxis (PCA) reaction. The main chemical constituents were further analyzed by UV spectrophotometry and high-performance liquid chromatography with tandem mass spectrometric detection (LC/MS/MS). EaF significantly protected against compound 48/80-induced mast cell degranulation and histamine release, and PCA. Flavonoids were determined to be the main contributors to the anti-allergic activity of the EaF extracts.
Si-Qi Li,Hong-Bo Liu,Ke Du,Jia-Cheng Han,Yi-Ru Li,Li-Hui Yin 국제구조공학회 2023 Structural Engineering and Mechanics, An Int'l Jou Vol.86 No.4
To deeply probe the actual earthquake level and fragility of typical reinforced concrete (RC) structures under multiple intensity grades, considering diachronic measurement building stock samples and actual observations of representative catastrophic earth shocks in China from 1990 to 2010, RC structures were divided into traditional RC structures (TRCs) and bottom reinforced concrete frame seismic wall masonry (BFM) structures, and the empirical damage characteristics and mechanisms were analysed. A great deal of statistics and induction were developed on the historical experience investigation data of 59 typical catastrophic earthquakes in 9 provinces of China. The database and fragility matrix prediction model were established with TRCs of 4,122.5284×104 m2 and 5,844 buildings and BFMs of 5,872 buildings as empirical seismic damage samples. By employing the methods of structural damage probability and statistics, nonlinear prediction of seismic vulnerability, and numerical and applied functional analysis, the comparison matrix of actual fragility probability prediction of TRC and BFM in multiple intensity regions under the latest version of China’s macrointensity standard was established. A novel nonlinear regression prediction model of seismic vulnerability was proposed, and prediction models considering the seismic damage ratio and transcendental probability parameters were constructed. The time-varying vulnerability comparative model of the sample database was developed according to the different periods of multiple earthquakes. The new calculation method of the average fragility prediction index (AFPI) matrix parameter model has been proposed to predict the seismic fragility of an areal RC structure.
A Study on Major Factors Influencing Dry Cutting Temperature of AISI 304 Stainless Steel
Hui-Bo He,Hua-Ying Li,Jun Yang,Xian-Yin Zhang,Qi-Bin Yue,Xue Jiang,류성기 한국정밀공학회 2017 International Journal of Precision Engineering and Vol.18 No.10
TiN coated and uncoated tools were used to conduct the dry cutting temperatures for AISI 304 stainless steel. Effects of cutting variables on cutting temperatures were investigated using single factor experiment method. The optimal cutting parameters of cutting temperatures were obtained through orthogonal experiment method. The forming process and temperature distribution of chips were analyzed using finite element method (FEM). The results show that cutting temperature generally increases with the increase of cutting speed and feed rate. When depth of cut increases at the range of 0.8-1.5 mm, the cutting temperature increases firstly and decreases subsequently. And the cutting temperature of TiN coated tool is lower than that of uncoated tool. The optimal parameters of cutting temperature are obtained by orthogonal experiment, which is A1B1C3. The highest temperature appears on the second deformation zone by the simulation.
Synthesis of Co3O4 nanowire arrays supported on Ni foam for removal of volatile organic compounds.
Hui, K N,Yin, Cui-Lei,Hui, K S,Lee, J Y,Li, M,Lee, S K,Tsui, K L,Chao, C Y H,Kwong, C W American Scientific Publishers 2012 Journal of Nanoscience and Nanotechnology Vol.12 No.4
<P>Crystalline Co3O4 nanowire arrays freely supported on Ni foam are successfully synthesized using a template-free method. The effects of reaction time, concentration of reactants, and temperature on the morphology of the nanowires are studied. The results indicate that uniform Co3O4 nanowires could be synthesized at 90 degrees C, and a transformation of the samples' morphology from nanoparticles to nanowires to microrods is observed by controlling the concentration of the reactants. The well-ordered nanowires synthesized under the selected reaction conditions are composed of spinel Co3O4 with diameters of 500-580 nm and lengths of 6-8 microm. These nanowires show good catalytic activity for the ozone catalytic oxidation of toluene.</P>
Yin, Pei-Hao,Liu, Xuan,Qiu, Yan-Yan,Cai, Jian-Feng,Qin, Jian-Min,Zhu, Hui-Rong,Li, Qi Asian Pacific Journal of Cancer Prevention 2012 Asian Pacific journal of cancer prevention Vol.13 No.11
The induction of apoptosis in target cells is a key mechanism for most anti-tumor therapies. Bufalin is a cardiotonic steroid that has the potential to induce differentiation and apoptosis of tumor cells. Research on bufalin has so far mainly involved leukemia, prostate cancer, gastric cancer and liver cancer, and has been confined to in vitro studies. The bufadienolides bufalin and cinobufagin have been shown to induce apoptosis in a wide spectrum of cancer cell. The present article reviews the anticancer effects of bufalin. It induces apoptosis of lung cancer cells via the PI3K/Akt pathway and also suppressed the proliferation of human non-small cell lung cancer A549 cell line in a time and dose dependent manner. Bufalin, bufotalin and gamabufotalin, key bufadienolides, significantly sensitize human breast cancer cells with differing ER-alpha status to apoptosis induction by the TNF-related apoptosis-inducing ligand (TRAIL). In addition, bufadienolides induce prostate cancer cell apoptosis more significantly than that in breast epithelial cell lines. Similar effects have been observed with hepatocellular carcinoma (HCC) but the detailed molecular mechanisms of inducing apoptosis in this case are still unclear. Bufalin exerts profound effects on leukemia therapy in vitro. Results of multiple studies indicate that bufalin has marked anti-tumor activities through its ability to induce apoptosis. Large-scale randomized, double-blind, placebo or positive drug parallel controlled studies are now required to confirm the efficacy and apoptosis-inducing potential of bufalin in various cancers in the cliniucal setting.
A taxonomic study of genus Teleogryllus from East Asia (Insecta: Orthoptera: Gryllidae)
Hui Lu,Xiao-Yin Wang,Han-Qiang Wang,Kai Li,Zhu-Qing He 한국응용곤충학회 2018 Journal of Asia-Pacific Entomology Vol.21 No.2
Crickets belonging to Teleogryllus spp. are widely distributed in East Asia and they are difficult to distinguish. In this study, a phylogenetic tree of Teleogryllus is reconstructed by COI gene, and all species can be distinguished well. The possible evolutionary histories of male genitalia, songs and life history are discussed. The result supports establishing subgenera Macroteleogryllus and Brachyteleogryllus of Teleogryllus spp. from East Asia. T. boninensis is moved to Brachyteleogryllus. The calling song of four species includes both long and short chirps, and the rest just have single chirps. The species inhabit sympatrically trend to have different type of calling song. Egg overwinter type evolved several times independently.
Hui Wong,Wendong Huang,Li Yin 전력전자학회 2019 JOURNAL OF POWER ELECTRONICS Vol.19 No.2
For a solid-state transformer (SST), some factors, such as signal delay, switching loss and differences in the system parameters, lead to unbalanced DC-link voltages among the cascaded H-bridges (CHB). With a control method implemented in the αβ frame, the DC-link voltages are balanced, and the reactive power is equally distributed among all of the H-bridges. Based on the αβ frame control, the system can achieve independent active current and reactive current control. In addition, the control method of the high-voltage stage is easy to implement without decoupling or a phase-locked loop. Furthermore, the method can eliminate additional current delays during transients and get the dynamic response rapidly without an imaginary current component. In order to carry out the controller design, the vector refactoring relations that are used to balance DC-link voltages are derived. Different strategies are discussed and simulated under the unbalanced load condition. Finally, a three-cell CHB rectifier is constructed to conduct further research, and the steady and transient experimental results verify the effectiveness and correctness of the proposed method.
First records of two species of the genus Brachionycha H?ner (Lepidoptera: Noctuidae) in China
Qing-Yin YANG,Cheng-De LI,Hui-Lin HAN 한국곤충학회 2007 Entomological Research Vol.37 No.4
Two species of the genus Brachionycha Hbner -B. nubeculosa (Esper) and B. albicilia Sugi - are recorded for the first time from China. The adults and genital characteristics of the species are briefly redescribed with illustrations, and their distributions are given.