The Influence of a Second Metal on the Ni/SiC Catalyst for the Methanation of Syngas

( Lan Lan Song ),( Yue Yu ),( Xiao Xiao Wang ),( Guoq Jang Jin ),( Ying Yong Wang ),( Xiang Yun Guo ) 한국화학공학회 2014 Korean Chemical Engineering Research(HWAHAK KONGHA Vol.52 No.5

The catalytic performance of silicon carbide supported nickel catalysts modified with or without secondmetal (Co, Cu and Zn) for the methanation of CO has been investigated in a fixed-bed reactor using a feed consisting of25% CO and 75% H2 without any diluent gas. It has been found that the introduction of Co species can clearly improvethe catalytic activity of Ni/SiC catalyst, whereas the addition of Cu or Zn can result in a significant decrease in the catalyticactivity. The characterizations by means of XRD, TEM, XPS, CO-TPD and H2-TPR indicate that the addition ofCo could decrease the particle size of active metal, increase active sites on the surface of methanation catalyst, improvethe chemisorption of CO and enhance the reducibility of methanation catalysts. Additionally, the special interaction betweenCo species and Ni species is likely favorable for the dissociation of adsorbed CO on the surface of catalyst, and this mayalso contribute to the high activity of 5Co-Ni/SiC catalyst for CO methanation reaction. For 5Cu-Ni/SiC catalyst and 5Zn-Ni/SiC catalyst, Cu and Zn species could cover partial nickel particles and decrease the chemisorption amount of CO. These could be responsible for the low methanation activity. In addition, a 150h stability test under 2 MPa and 300 oCshowed that 5Co-Ni/SiC catalyst was very stable for CO methanation reaction.

노인의 문화가치, 사회활동, 미디어 이용이 심리적 안정감과 우울감에 미치는 영향

Zhi Lan Yue,전종우 사단법인 한국융합기술연구학회 2023 아시아태평양융합연구교류논문지 Vol.9 No.10

인구 고령화는 이미 사회문제가 되고 있으며, 노인의 생활에 대한 부담이 증가할 수록 삶의 질 저하, 외로움 등 문제점이 증가하고, 질병 발병률이 높을수록 우울증에 걸리기 쉽다. 본 연구는 65세 이상 노인의 미디어 이용, 문화적 가치와 사회활동 참여도가 노인의 우울감과 심리적 안정감에 미치는 영향에 대해 탐구하였다. 연구결과 여성노인에 비해 남성노인이 우울감을 많이 느끼고 건강상태가 나빠질수록 우울감이 증가하는것으로 나타났다. 반면, 신문을 많이 이용할수록 우울감이 낮은 것으로 나타났다. 그리고 문화적 가치의 권력거리, 불확실성 회피, 집단주의, 장기적 지향, 남성성을 투입하면 남성노인들의 우울감이 증가했고 반면 사회활동 참여도가 높을수록 우울감이 낮았다. 또한 신문과 인터넷 사용은 심리적 안정감에 긍정적인 영향을 미쳤고, 남성노인은 여성노인보다 심리적 안정감이 낮고, 경제 상황이 좋을수록 심리적 안정감이 높으며, 문화적 가치 성향이 높을수록 심리적 안정감이 낮은 것으로 나타났다. 본 연구가 노년층의 정신건강을 위한 기초 데이터 및 학문적 시사점을 제공할 수 있기를 기대한다. The higher the social problems caused by the aging population, the higher the burden of living for the elderly, the higher the stress of life, the higher the loneliness, and the higher the incidence of disease, the easier it is to get depression. This study explored the significance of media use, cultural values, and participation in social activities of the elderly aged 65 or older on depression and psychological stability of the elderly. The results of the study showed that the worse the male elderly and their health condition, the more depressed they become. The more newspapers the old man uses, the less depressed he feels. The elderly men can feel more depressed if they put in cultural value power distance, uncertainty avoidance, collectivism, long-term orientation, and masculinity. The higher the participation in social activities, the less depression. The use of newspapers and the Internet has a positive effect on psychological stability. The elderly male have less psychological stability than the elderly female, and the better the economic situation, the higher the psychological stability. The higher the cultural value propensity, the weaker the psychological stability. This study provides basic data and academic implications for the mental health of the elderly.

사회적 지원 인식과 직무스트레스 및 조직에 대한 태도의 관계 -항공 서비스 산업에의 시사점-

이월란 ( Yue Lan Li ),권성우 ( Seung Woo Kwon ),박지혜 ( Ji Hey Park ) 한국항공경영학회 2012 한국항공경영학회지 Vol.10 No.3

본 연구는 조직 구성원들의 직무태도에 영향을 미치는 중요한 요소 중 하나인 직무스트레스(역할갈등, 역할모호)가 직무만족, 정서적 조직몰입에 어떤 영향을 미치는지에 관하여 검증하고자 하였다. 특히, 상사, 동료의 지원을 포함하는 조직 내부의 사회적 지원이 이들 변수들과 어떤 영향을 미칠 것인가를 살펴보았다. 즉, 사회적 지원이 완충효과, 예방효과, 그리고 대처 효과 중 어떤 효과가 있는지를 검증하였다. 총 102명의 다양한 산업의 직장인들을 대상으로 설문 조사한 실증 결과를 토대로 결과를 도출 하였다. 연구 결과, 조직 내부의 사회적 지원에 대한 인식은 직무스트레스 자체를 줄여주거나(예방효과), 직무스트레스가 존재하더라도 직무만족과 정서적 조직몰입을 높이는 역할(대처효과)을 하는 것으로 나타났다. 한편, 조직 내부의 사회적 지원 인식이 직무스트레스와 직무태도 사이의 부정적 관계를 조절하지는 못 하였기 때문에 완충효과는 없는 것으로 밝혀졌다. 본 연구 결과가 항공 서비스 산업에 줄 수 있는 실무적 시사점과 한계점 및 향후 연구방향에 대하여 논의하였다. This study investigated the relationship between job stresses (role conflict and role ambiguity) and employee`s job attitudes (job satisfaction and affective organizational commitment) concerning the function of social supports from supervisors and co-workers in companies. We hypothesized the effects of internal organizational social supports into three ways: Buffering, preventing, and coping effects. As we expected, the perception of internal organizational social supports negatively related to job stresses (preventing effects) and job attitudes (coping effects). However, it did have buffering effect in that it did not moderate the relationship between job stress and job attitudes. Practical implications, limitations, and future research for aviation service industry suggestions were discussed.

온라인 쇼핑의 상호작용, 실재감이 신뢰도와 구매의도에 미치는 영향: SOR 모델을 중심으로

Zhi Lan Yue,Jun Tao Guo,전종우 사단법인 한국융합기술연구학회 2023 아시아태평양융합연구교류논문지 Vol.9 No.4

In the past two years, consumers have more opportunities to choose online shopping due to the influence of COVID-19, and many offline stores have switched from offline to online. Therefore, enhancing the experience of consumers in the shopping platform becomes a new focus of discussion. This study takes the online shopping platform as the research object, through questionnaires to investigate the people with online shopping experience. The results show that consumer-platform interaction, consumer-seller interaction and consumer interaction have a positive effect on consumers' social and physical presence. The impact of social presence on consumer confidence has not been felt. This study theoretically verifies the influence of interaction on purchasing intention, establishes the core role of consumer trust in purchasing behavior, and presence that there is a positive influence on trust. In the part of practice, this thesis provides reference direction for the future interactive experience of online shopping platform, enhancing consumer trust and purchasing intention. 최근 2년 동안 코로나-19의 영향으로 소비자들이 온라인 쇼핑을 선택할 기회가 증가하여 많은 오프라인 매장이 온라인 운영으로 전환되었다. 따라서 쇼핑 플랫폼에서 소비자의 경험을 향상시키는 것이 새로운 논의의 초점이 되었다. 본 연구의 목적은 소비자와 플랫폼, 소비자와 판매자, 소비자와 소비자 간의 상호 작용을 통해 소비자의 쇼핑 실재감,신뢰도와 사용 의도 사이의 영향을 향상시키는 데 있다. 연구 결과에 따르면 소비자와 플랫폼의 상호 작용, 소비자와 판매자의 상호 작용, 소비자 간의 상호 작용은 소비자의 사회적 실재감과 물리적 실재감에 긍정적인 영향을 미치고, 물리적 실재감은 소비자 신뢰도에 긍정적인 영향을 미치며, 소비자 신뢰도는 구매 의도에 긍정적인 영향을 미치는 것으로 나타났다. 반면, 사회적 실재감은 소비자 신뢰도에 영향을 미치지 않는 것으로 드러났다. 본 연구에서는 상호 작용이 구매 의도에 미치는 영향에 대해 이론적 검증을 실시하였고 구매 행동에 미치는 소비자 신뢰의 핵심 역할을 확립하였으며 신뢰에 대한 실제 인식의 긍정적인 영향을 검증하였다. 또한, 향후 온라인 쇼핑 플랫폼의 상호 작용 경험과 소비자 신뢰도 및 구매 의도에 대한 실무적 시사점을 제시하였다.

Interaction between Barium Oxide and Carbon Film in BaO/C/Mo System under High Temperature

Yue Hui Lu,Xue Mei Wu,Lan Jian Zhuge,Xiang Huai Liu 한국물리학회 2005 THE JOURNAL OF THE KOREAN PHYSICAL SOCIETY Vol.46 No.1

Carbon ¯lm, used as the coating of the Mo grid in pulsed-controlled grid traveling wave tubes, can eectively suppress electron emission from the Mo grid contaminated by the emission material of the hot cathode, i.e. BaO or Ba, so that the lifetime of the tubes can be prolonged signi¯cantly but the reasons for it have not been well understood. To study the eect of it on the BaO/Mo system under high temperature, carbon ¯lms were prepared on Mo substrate at room temperature by a dual-ion-beam sputtering deposition system, and post-annealing was conducted to know their microstructure under high temperature. In our experiments, BaO layers were coated on Mo and carbon-coated Mo substrates by the chemical method to compare with each other, and the prepared BaO/Mo and BaO/C/Mo samples were annealed at two dierent temperatures of 973 K and 1223 K in order to investigate the interaction between barium oxide and carbon ¯lm under high temperature. The results show that the BaO/C/Mo changes into C/Mo after the exhaustion of BaO at 1223 K, nevertheless, This does not happen at 973 K. In this paper, the mechanism whereby the addition of carbon ¯lm can suppress the grid emission under its operating condi-tion is discussed according to the experimental results and the calculation of the reaction free energy.

The Prognostic Effect of Regular Surveillance for Recurrence Following Curative Resection for Hepatocellular Carcinoma: A Large Multicentre Analysis

( Lan-qing Yao ),( Han Liu ),( Yong-kang Diao ),( Yi-fan Wu ),( Chao Li ),( Ying-jian Liang ),( Yong-yi Zeng ),( Ming-da Wang ),( Guo-yue Lv ),( Tian Yang ) 대한간학회 2024 춘·추계 학술대회 (The Liver Week) Vol.2024 No.1

Effects of CSN1S2 Genotypes on Economic Traits in Chinese Dairy Goats

Yue, X.P.,Fang, Q.,Zhang, X.,Mao, C.C.,Lan, X.Y.,Chen, H.,Lei, Chuzhao Asian Australasian Association of Animal Productio 2013 Animal Bioscience Vol.26 No.7

The aim of this study was to investigate allele frequencies at the CSN1S2 locus in two Chinese dairy goat breeds and the effects of its variation on dairy goat economic traits. Seven hundred and eight goats from Xinong Saanen (XS, n = 268) and Guanzhong (GZ, N = 440) breeds were selected. The milk samples of 268 XS goats were collected during the middle of lactation, body size parameters (708 goats) and daily milk yield (202 goats) were registered. The RFLP (restriction fragment length polymorphism) and SSCP (single strand conformation polymorphism) were used to detect the polymorphisms in CSN1S2. The Hardy-Weinberg (HW) equilibrium and the associations between body size, milk yield and composition and the genotypes were calculated. The results revealed that only A and F CSN1S2 alleles were found in the two Chinese dairy goat breeds. Allelic frequencies of A and F were 0.795, 0.205 and 0.739, 0.261 in Xinong Saanen and Guanzhong population respectively. Xinong Saanen breed was in Hardy-Weinberg equilibrium, while Guanzhong breed deviated from Hardy-Weinberg equilibrium (p<0.05). The association of polymorphism with economic traits indicated that the goats with FF genotype have higher milk fat and total solid concentration than those with AA and AF genotypes (p<0.05).

Effects of post anneal for the INZO films prepared by ultrasonic spray pyrolysis

Lan, Wen-How,Li, Yue-Lin,Chung, Yu-Chieh,Yu, Cheng-Chang,Chou, Yi-Chun,Wu, Yi-Da,Huang, Kai-Feng,Chen, Lung-Chien Techno-Press 2014 Advances in nano research Vol.2 No.4

Indium-nitrogen co-doped zinc oxide thin films (INZO) were prepared on glass substrates in the atmosphere by ultrasonic spray pyrolysis. The aqueous solution of zinc acetate, ammonium acetate and different indium sources: indium (III) chloride and indium (III) nitrate were used as the precursors. After film deposition, different anneal temperature treatment as 350, 450, $550^{\circ}C$ were applied. Electrical properties as concentration and mobility were characterized by Hall measurement. The surface morphology and crystalline quality were characterized by SEM and XRD. With the activation energy analysis for both films, the concentration variation of the films at different heat treatment temperature was realized. Donors correspond to zinc related states dominate the conduction mechanism for these INZO films after $550^{\circ}C$ high temperature heat treatment process.

An ileosigmoid fistula: what is the diagnosis?

( Chun Lan Zhang ),( Ji Li ),( Yan You ),( Yue Hui Ni ),( Yan Zhang ),( Jia Ming Qian ) 대한장연구학회 2017 Intestinal Research Vol.15 No.2

Evaluating an Academic Writing Course-based on an Integrated Model

Li Zhang,Yue Sheng,Lan Li 아시아영어교육학회 2014 The Journal of Asia TEFL Vol.11 No.1