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Xiang-Dong Shen,Xi Chen,Yuting Jiang,Haixin Ji 한국무역학회 2022 Journal of Korea trade Vol.26 No.8
Purpose – The paper aims to develop the theory of TAM and perceived risk through a more comprehensive and rigorous understanding of the influencing factors of the consumer’s adoption of LG HomNet smart home from the perspective of trade-offs. Design/methodology – Based on the TAM and perceived risk theory, combined with the individual characteristics of consumers in the context of information technology as the external factors of the technology acceptance model, this paper constructs a theoretical model of the factors affecting the use intention of the consumer. It was empirically tested by using SEM, and survey data was collected from 458 respondents. Findings – The research results show that 9 hypotheses of the research model are supported and have reliable prediction accuracy. Consumers’ perceived interest, perceived connectivity and perceived controllability have a significant positive impact on their intention to use. In addition, this paper also confirmed the mediating effect of perceived usefulness and perceived ease of use. Originality/value – Consumers are very concerned about gains and losses. Low-level performance risks, security risks, and financial risks will drive the consumer to have a stronger intention to use, and financial risks have the strongest impact. This research provides a useful implication and guidance for smart home equipment manufacturers and service providers in product and service innovation and marketing and promotion strategies.
Sulfur fate during bituminous coal combustion in an oxy-fired circulating fluidized bed combustor
Lunbo Duan,Wu Zhou,Haixin Li,Xiaoping Chen,Changsui Zhao 한국화학공학회 2011 Korean Journal of Chemical Engineering Vol.28 No.9
To clarify the sulfur transformation behavior during oxy-fired circulating fluidized bed (CFB) combustion,experiments on SO_2 emission characteristics were carried out in a 50 kWth CFB combustor. Results show that SO_2 emission is quite dependent on the bed temperature in different atmospheres without limestone injection. With Ca/S=2.5, SO_2 emission in 21%O_2/79%CO_2 atmosphere is smaller than that in air atmosphere, but SO_2 emission decreases with the increase of O_2 concentration. The calcium forms in the ash prove the combination of calcination/carbonation and direct sulfation mechanism of limestone under oxy-combustion conditions. And the desulfurization efficiency of limestone (as deducting the self-retention efficiency from the total sulfur removal efficiency) increases from 40% to 52% as the O_2 concentration increases from 21% to 40%.
Ginsenosides Rc, as a novel SIRT6 activator, protects mice against high fat diet induced NAFLD
Zehong Yang,Yuanyuan Yu,Nannan Sun,Limian Zhou,Dong Zhang,HaiXin Chen,Wei Miao,Weihang Gao,Canyang Zhang,Changhui Liu,Xiaoying Yang,Xiaojie Wu,Yong Gao The Korean Society of Ginseng 2023 Journal of Ginseng Research Vol.47 No.3
Background: Hepatic lipid disorder impaired mitochondrial homeostasis and intracellular redox balance, triggering development of non-alcohol fatty liver disease (NAFLD), while effective therapeutic approach remains inadequate. Ginsenosides Rc has been reported to maintain glucose balance in adipose tissue, while its role in regulating lipid metabolism remain vacant. Thus, we investigated the function and mechanism of ginsenosides Rc in defending high fat diet (HFD)-induced NAFLD. Methods: Mice primary hepatocytes (MPHs) challenged with oleic acid & palmitic acid were used to test the effects of ginsenosides Rc on intracellular lipid metabolism. RNAseq and molecular docking study were performed to explore potential targets of ginsenosides Rc in defending lipid deposition. Wild type and liver specific sirtuin 6 (SIRT6, 50721) deficient mice on HFD for 12 weeks were subjected to different dose of ginsenosides Rc to determine the function and detailed mechanism in vivo. Results: We identified ginsenosides Rc as a novel SIRT6 activator via increasing its expression and deacetylase activity. Ginsenosides Rc defends OA&PA-induced lipid deposition in MPHs and protects mice against HFD-induced metabolic disorder in dosage dependent manner. Ginsenosides Rc (20mg/kg) injection improved glucose intolerance, insulin resistance, oxidative stress and inflammation response in HFD mice. Ginsenosides Rc treatment accelerates peroxisome proliferator activated receptor alpha (PPAR-α, 19013)-mediated fatty acid oxidation in vivo and in vitro. Hepatic specific SIRT6 deletion abolished ginsenoside Rc-derived protective effects against HFD-induced NAFLD. Conclusion: Ginsenosides Rc protects mice against HFD-induced hepatosteatosis by improving PPAR-α-mediated fatty acid oxidation and antioxidant capacity in a SIRT6 dependent manner, and providing a promising strategy for NAFLD.
Meiqiang Fan,Yong Jin Zou,Hao Yin,Yan Li Huang,Chengqiao Xi,Haixin Kang,Chao Li,Jingjing Zhang,Chunju Lv,Meiqiang Fan,Zhi Chen 성균관대학교(자연과학캠퍼스) 성균나노과학기술원 2019 NANO Vol.14 No.3
A hollow silicon oxide coated with cuprous oxide and polyaniline (hSiOx/Cu2O/PANI) was prepared via Stober method, magnesium reduction and chemical oxidative polymerization. The hSiOx/Cu2O/PANI (SiOx 62 wt.%, PANI 33 wt.%, Cu2O 5 wt.%) presented charge/discharge capacities of up to 2000 mAhg -1 after 60 cycles at 0.2 Ag -1 current density and higher than 880 mAhg -1 at 8 Ag -1 current density. Microstructural analysis demonstrated that the improvement was due to the nanostructure of hollow SiOx sphere coated with Cu2O and PANI, which could release high stress caused by volume expansion during the lithiation/delithiation process and had little damage to electrode materials. Cycle voltammetry (CV) and electrochemical impedance spectroscopy (EIS) results further confirmed that Cu2O and PANI dual-coating improved reversibility and conductivity of hSiOx and prevented it to drop from the electrode surface.