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RISS 인기검색어
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- 저자 : Yingxin Chen (검색결과 5 건)
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Research on Group Emotional Intelligence Effects on Group Decision-making under Emergency
Yingxin Chen 보안공학연구지원센터 2014 International Journal of Hybrid Information Techno Vol.7 No.6
After various types of emergencies, victims and rescuers will have negative psychological and mental reactions, such as stress response, psychological disorder. In this case, making the right group decision is the most important issue. It proposes the concept model of group emotional intelligence, adopts 2x2 factorial design, carries on survival experiment including 52 groups, and analyzes the influence of the group emotional intelligence on intra-group conflict, conflict management, performance, satisfaction and cohesion. Utilizes the statistical software SPSS19.0 for data analysis, and draws reliable conclusions. The conclusions offer references for enhancing emotional management capacity and problem-solving abilities of decision-making groups in emergencies environment.
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Yingxin Zhao,Li Chen,Heather L. Bruce,Zhenyu Wang,Bimol C. Roy,Xin Li,Dequan Zhang,Wei Yang,Chengli Hou 한국축산식품학회 2022 한국축산식품학회지 Vol.42 No.5
To evaluate the effects of early postmortem vacuum packaging (VP) on meat quality during postmortem chilled storage, hot-boned lamb was vacuum-packaged at 1, 6, 12, 24, and 48 h postmortem and stored around 2℃ until 168 h postmortem, with lamb packaged in plastic wrap as the control (aerobic packaging). Intramuscular pH decline was delayed when lamb was vacuum packaged at 1, 6, and 12 h postmortem (p<0.05). The lamb vacuum-packaged at 1 h postmortem (VP-1h group) had significantly lower shear force values and purge losses accompanied by lower free thiol group values than other treatments during postmortem storage and was also higher in extractable calpain-1 activity by 6 h postmortem (p<0.05). Free thiol group concentrations were significantly higher after VP at 6 and 12 h postmortem (p<0.05). Packaging lamb under vacuum very early postmortem produced the lowest shear force and purge loss, likely by slowing heat loss and muscle temperature decline, implying that lamb quality is improved by VP when applied very early postmortem. This was at the expense of protein oxidation, which was unrelated to other meat quality measurements, most likely because potential contracture during hot boning confounded its impact. Further research is required to understand the implications of the interaction between protein oxidation, VP, and hot boning on the acceptability of lamb.
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Graphene Enhanced Electrical Properties of Polyethylene Blends for High-Voltage Insulation
Zuojun Wei,Yaxin Hou,Chen Jiang,Haiyan Liu,Xiangrong Chen,Anyun Zhang,Yingxin Liu 대한금속·재료학회 2019 ELECTRONIC MATERIALS LETTERS Vol.15 No.5
Graphene as a novel additive in low density polyethylene (LDPE), high density polyethylene–low density polyethylene blend(10%HDPE–LDPE) and polypropylene–low density polyethylene blend (10%PP–LDPE), is investigated for promising ecofriendlyinsulating materials in high voltage cables. The composites with graphene amounts of 0, 0.002 wt%, 0.02 wt%,and 0.2 wt% are prepared by the solution mixing method. With attempt to disclose the structure–property relationships, thecomposites are extensively characterized by physical techniques including Fourier transform infrared spectroscopy, X-raydiffraction, atomic force microscopy, transmission electron microscopy, scanning electron microscopy, thermogravimetricanalysis and differential scanning calorimetry, and electrical measurements including electrical treeing, direct current conductivityand space charge distributions. Results show that graphene can significantly enhances the thermal stability of LDPEand 10%PP–LDPE, slightly decrease the degree of crystallinity, change the size of the crystal diameters, and improve thephase distribution of the polymer blends. Consequently, graphene can prolong the electrical tree initiation time and blockthe extension of electrical tree. Besides, it can modulate the trap distributions, which will further change the conductivityand ability to suppress space charge accumulations. This excellent performance of graphene could be attributed to its goodexfoliation, uniform dispersion and outstretched morphology in the polymer matrix, as well as its strong ability to captureelectrons.
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Zuojun Wei,Yuran Cheng,Mengting Chen,Yuhua Ye,Yingxin Liu 한국화학공학회 2022 Korean Journal of Chemical Engineering Vol.39 No.7
Using nitrogen-doped mesoporous carbon (NMC) as the support, several NiRe bimetallic catalysts withlow metal loading of 1 wt% were designed and prepared for the selective deoxygenation of oleic acid to n-heptadecanein the absence of hydrogen. Results showed that the Ni80Re20/NMC catalyst with a Ni/Re molar ratio of 80 : 20 achievedthe highest yield of n-heptadecane (92.3%) at 330 oC for 2 h in isopropanol solvent, and at a metal/oleic acid weightratio of 1 : 333. The catalyst can be reused at least five times with slight activity loss. Combined with the results of insituXRD, HRTEM, XPS and CO2-TPD, the formation of NiRe alloy, the very fine NiRe nanoparticle size at 2.30 nm, aswell as the hydrophobic, mesoporous and weakly basic properties of the NMC support surface were demonstrated tocontribute to the excellent catalytic performance of the catalyst.
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Hongwei Lu,Jianxin Du,Cuiping Yu,Xingping Wang,Yanlin Gao,Weizhong Xu,Aiping Liu,Xiaoxiao Lu,Yingxin Chen 한국고분자학회 2020 Macromolecular Research Vol.28 No.6
The development of high dielectric materials with high energy densities is a crucial research domain in the modern microelectronics and power systems. The objective of this work was to develop the highly ordered crystal orientations and large ferroelectric crystalline β/γ-phases in the biaxially oriented poly(vinylidene fluoride) (BOPVDF). Importantly, a high discharged energy density and high dielectric constant was achieved by using a high-electric-induced technique. A suitable poling electric field was applied to the BOPVDF films in order to enhance the breakdown strength. Remarkably, the BOPVDF film poled at the electric field of 113 MV m-1 achieved an unprecedented discharged energy density of 25.4 J cm-3 at an ultra-high electric field of 550 MV m-1, which is by far the highest value ever achieved in flexible polymer-based capacitor films. Comparatively, the unpoled BOPVDF and commercial biaxially oriented polypropylene (BOPP) exhibited only a discharged energy density of 7.9 J cm-3 and 1.2 J cm-3, respectively. This systematic study provides a new design paradigm to exploit PVDF-based dielectric polymers for capacitor applications.
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