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Flavor Components Comparison between the Neck Meat of Donkey, Swine, Bovine, and Sheep
Xiu Li,Issoufou Amadou,Guang-Yun Zhou,Li-Yan Qian,Jian-Ling Zhang,Dong-Liang Wang,Xiang-Rong Cheng 한국축산식품학회 2020 한국축산식품학회지 Vol.40 No.4
Donkey in China is well known for its draft purpose and transportation; however, donkey meat has attracted more and more consumers in recent years, yet it lacks sufficient information on its flavor components compared to other main meats. Therefore, in this study, volatile flavor compounds in neck meat of donkey, swine, bovine, and sheep were classified by electronic nose, then confirmed and quantified by gas chromatography-mass spectrometry. High-performance liquid chromatography (HPLC) and gas chromatography were used to quantify free fatty acid, amino acid, and flavor nucleotide. A total of 73 volatile compounds were identified, and aldehydes were identified as the characteristic flavor compounds in neck meat of donkey, bovine, swine and sheep in proportion of 76.39%, 46.62%, 31.64%, and 35.83%, respectively. Particularly, hexanal was the most abundant volatile flavor. Compared with other neck meat, much higher unsaturated free fatty acids were present in donkeys. Furthermore, neck meat of donkeys showed essential amino acid with highest content. Thus, special flavor and nutrition in donkey neck meat make it probably a candidate for consumers in other regions besides Asia.
Xiuli Wang,Yonggang Lu,Rongsheng Zhu,Qiang Fu,Haoqian Yu,Yiming Chen 한국원자력학회 2019 Nuclear Engineering and Technology Vol.51 No.7
The AP1000 reactor coolant pump is a vertical shielded-mixed flow pump, is the most important coolant power supply and energy exchange equipment in nuclear reactor primary circuit system, whose steady-state and transient performance affect the safety of the whole nuclear island. Moreover, safety demonstration of reactor coolant pump is the most important step to judge whether it can be practiced, among which software simulation is the first step of theoretical verification. This paper mainly introduces the fluid-solid coupling simulation method applied to reactor coolant pump, studying the feasibility of simulation results based on workbench fluid-solid coupling technology. The study found that: for the unsteady calculations of the pure liquid media, the average head of the reactor coolant pump with bidirectional fluid-solid coupling decreases to a certain extent. And the coupling result is closer to the real experimental value. The large stress and deformation of rotor under different flow conditions are mainly distributed on impeller and idler, and the stress concentration mainly occurs at the junction of front cover plate and blade outlet. Among the factors that affect the dynamic stress change of rotor, the pressure load takes a dominant position.
Antiviral effects of Bovine antimicrobial peptide against TGEV in vivo and in vitro
Xiuli Liang,Xiaojun Zhang,Kaiqi Lian,Xiuhua Tian,Mingliang Zhang,Shiqiong Wang,Cheng Chen,Cunxi Nie,Yun Pan,Fangfang Han,Zhanyong Wei,Wen-Ju Zhang 대한수의학회 2020 Journal of Veterinary Science Vol.21 No.5
Background: In suckling piglets, transmissible gastroenteritis virus (TGEV) causes lethal diarrhea accompanied by high infection and mortality rates, leading to considerable economic losses. This study explored methods of preventing or inhibiting their production. Bovine antimicrobial peptide-13 (APB-13) has antibacterial, antiviral, and immune functions. Objectives: This study analyzed the efficacy of APB-13 against TGEV through in vivo and in vitro experiments. Methods: The effects of APB-13 toxicity and virus inhibition rate on swine testicular (ST) cells were detected using 3-(4,5-dimethylthiazol-2-yl)-2, 5-diphenyl tetrazolium bromide (MTT). The impact of APB-13 on virus replication was examined through the 50% tissue culture infective dose (TCID50). The mRNA and protein levels were investigated by real-time quantitative polymerase chain reaction and western blot (WB). Tissue sections were used to detect intestinal morphological development. Results: The safe and effective concentration range of APB-13 on ST cells ranged from 0 to 62.5 μg/mL, and the highest viral inhibitory rate of APB-13 was 74.1%. The log10TCID50 of 62.5 μg/mL APB-13 was 3.63 lower than that of the virus control. The mRNA and protein expression at 62.5 μg/mL APB-13 was significantly lower than that of the virus control at 24 hpi. Piglets in the APB-13 group showed significantly lower viral shedding than that in the virus control group, and the pathological tissue sections of the jejunum morphology revealed significant differences between the groups. Conclusions: APB-13 exhibited good antiviral effects on TGEV in vivo and in vitro.
Accessibility of Korean Cultural Values at Screens : Decoding Patterns of North American Audiences
Xiuli Chen,Sirui Yao,Jiyeon Baek,Jiena Sha,Kesu Lin,Kyung-young Chung 국제문화기술진흥원 2022 International Journal of Advanced Culture Technolo Vol.10 No.4
This research investigates the accessibility of Korean modern values at screens from the perspectives of North American audiences while consuming Korean films and TV dramas. In order to decode Korean cultural values at screens, this study collects the data of 266 Korean films and TV dramas distributed in North America from IMDb platform, unlocking that the success of box office for Korean projects in North America is positively correlated with the characteristics of Violence & Gore and Profanity. Meanwhile, the audiences’ positive responses to the violent project mainly depends on the degree of Sex and Nudity, the plots of social groups. The current success of Korean cultural and creative industry as well as the future global markets strengths are analyzed in this research. Stuart Hall's cultural studies approach and cultural psychological account theory are applied to discuss the success of Korean entertainment industry in the transnational cultural communication.
Xiuli Zhang,Jianwei Li,Dong Wang,Huiqin Li 성균관대학교(자연과학캠퍼스) 성균나노과학기술원 2017 NANO Vol.12 No.1
In this work, a novel electrochemical sensor was presented for Tanshinone IIA determination. The as-prepared electrode was prepared by electrodepositing a reduced graphene oxide film onto a carbon paste electrode modified with gold nanoparticles, which combined the advantages of both gold nanoparticles and electrochemically reduced graphene oxide. It was characterized with scanning electron microscopy and cyclic voltammetry. The electrochemical behavior of Tanshinone IIA at the modified electrode was investigated for the first time. Results revealed that the modified electrode can effectively increase response toward Tanshinone IIA by significantly enhancing the redox peak currents and decreasing the peak-to-peak separation. Under the optimized conditions, the modified electrode showed a linear voltammetric response to Tanshinone IIA at concentrations ranging from 5.0 x 10-8 mol L-1 to 1.0 x 10-5 mol L-1, with a detection limit of 1.0 x 10-8 mol L-1 (S/N = 3). The proposed method was successfully applied in determination of Tanshinone IIA in pharmaceutical samples with satisfactory results.
Xiuli Han,Yuyuan He,Haohao Zhao,Duo Wang 한국화학공학회 2014 Korean Journal of Chemical Engineering Vol.31 No.10
Activated carbon could be prepared from residue of rice husk using physical activation with steam as ac-tivating agent. Response surface methodology (RSM) was applied to optimize the effects of processing parameters,and regression analysis was performed on the data obtained. The optimal conditions for adsorption capacity of activatedcarbon from the residue of rice husk were activation temperature of 946 oC, activation time of 31 min and water (18 g)which changed to steam by heating, resulting in 970.06 mg·g−1of iodine adsorption capacity and 31.36% of activatedcarbon yield. The activated carbon prepared under optimum condition was mesoporous with BET surface area of 1,004.296m2·g−1, total pore volume of 0.9388 cm3·g−1and average pore diameter of 2.043 nm. The surface chemical functionalgroups of activated carbon were identified by FT-IR, and its microstructure was examined by scanning electron micro-scopy (SEM). We concluded that the process of physical activation with steam could be an environmentally harmoniousand effective method for preparing activated carbon from residue of desilicated rice husk.