Further Study on Infectivity of Zoophilic and Anthropophilic Strains of Schistosoma Japanicum to Different Races of Oncomelania hupensis Snails

Lee, K.M.,Fan, P.C.,Wu, C.C.,Liu, C.Y. INSTITUTE OF TROPICAL MEDICINE YONSEI UNIVERSITY 1994 YONSEI REPORTS ON TROPICAL MEDICINE Vol.25 No.1

In the present study, Oncomelnia snails were collected from Chen-shan District of I-lan County, Pu-yen District of Chang-hua County, Chang-hu District of Yun-lin County, Pali District and A-li-lao of Taipei County, and Liu-kuei District of Kao-hsiung County. The Oncomelania snails from A-li-lao were infected with Hupei/China strain of Schistosoma japonicum (anthropophilic type). The remaining five races of Oncomelania snails were infected with Han-pao/Taiwan strain of S. japonicum (zoophilic type). Each snail was infected with five miracidia and examined six times after infection. Except for the snails from Liu-Kuei, those from the other five areas were found positive. The infection rate of the snails infected with the zoophilic strain of S. japonicum was the highest in those from Pa-li (42.9%), followed by Chang-Hu (38.4%), Pu-Yen (17.1%). and Chen-Shan (10%). The Oncomelania snails from A-li-lao infected with the anthropophilic strain of S. japonicum gave an infection rate of 53%. The snails from A-il-lao and Pa-li were O. hupensis chiui and those from the other four areas were O. hypensis formosana. In contrast to the order of infection rate. the size of the Chang-hua strain of O. h. formosana was the largest (6.3×2.9mm ) and the A-li-lao strain of O. h. chiui was the smallest (4.2×2.3mm). The Pa-li strain of O. h. chiui snails was middle size (4.8×2.7mm). The infection rate and the size of snails were turned out to be negatively correlated.

A Joint Control Strategy for Automobile Active Grille Shutter and Cooling Fan

Liu Chuanbo,Wang Zhengju,Fan Chaojie,Zhang Ruonan,Man Xingjia 한국자동차공학회 2021 International journal of automotive technology Vol.22 No.6

As an emerging technology improving fuel consumption, active grille shutter (AGS) has been applied in engine cooling system. For the reason of unreasonable matching method of grille opening and cooling fan, the problem of engine overcooling is widespread. As components with similar function of adjusting cooling air flow, the AGS and the cooling fan are separated from each other in parameter matching and operation which reduce cooling efficiency and fuel economy. To achieve precise cooling and improve fuel economy, a joint control strategy for AGS and cooling fan was proposed by using computational fluid dynamics. In order to verify the feasibility of the strategy, the fuel economy tests were carried out at 0 km/h, 90 km/h and 120 km/h, respectively. The results showed that the fuel consumption under the three working conditions was reduced by 0.01 L/ 100 km, 0.07 L/ 100 km and 0.13 L/ 100 km, respectively, indicating that the proposed strategy can significantly reduce fuel consumption.

Two 3D CdII and ZnII Complexes Based on Flexible Dicarboxylate Ligand and Nitrogen-containing Pillar: Synthesis, Structure, and Luminescent Properties

Liu Liu,Yan-hua Fan,Lan-zhi Wu,Huai-min Zhang,Li-rong Yang 대한화학회 2013 Bulletin of the Korean Chemical Society Vol.34 No.12

Two 3D isomorphous and isostructural complexes, namely, [Zn(BDOA)(bpy)(H2O)2]n (1) and [Cd(BDOA)- (bpy)(H2O)2]n (2); (BDOA = Benzene-1,4-dioxyacetic acid, bpy = 4,4'-bipyridine) were synthesized under hydrothermal conditions and characterized by means of elemental analyses, thermogravimetric (TG), infrared spectrometry, and single crystal X-ray diffraction. Complexes 1 and 2 crystallize in the triclinic system, space group P-1 and each metal ion in the complexes are six-coordinated with the same coordination environment. In the as-synthesized complexes, BDOA2− anions link central metal ions to form a 1D zigzag chain [-BDOA2− -Zn(Cd)-BDOA2−-Zn(Cd)-]∞, whereas bpy pillars connect metal ions to generate a 1D linear chain [-bpy- Zn(Cd)-bpy-Zn(Cd)-]∞. Both infinite chains are interweaved into 2D grid-like layers which are further constructed into a 3D open framework, where hydrogen bonds play as the bridges between the adjacent 2D layers. Luminescent properties of complex 1 showed selectivity for Hg2+ ion.

Improved Stability of Aluminum Foam Through Heat Treatment of Foamable Precursor

Fan Deng,Yanqiang Liu,Xuehan Lu,Jianzhong Fan 대한금속·재료학회 2020 METALS AND MATERIALS International Vol.26 No.10

Foam stability, characterized by the dynamics of foam expansion and decay, is essential for producing aluminum foam. While, the stability is often difficult to control. In present study, the heat treatment of foamable precursor was applied toimprove the foam stability via the powder route. Interestingly, both process of foam expansion and decay were remarkablyslow down after heat treatment. The time to achieve peak expansion was prolonged to 2.38 times, and the time span frompeak expansion to obvious drainage and collapse happening increased to 6 times. The enhanced stability is thought to relateto the oxide-flakes on the cell face caused by heat treatment.

Recovery of Native Protein from Potato Root Water by Expanded Bed Adsorption with Amberlite XAD7HP

Fan-Kui Zeng,Hong Liu,Peng-Jun Ma,Gang Liu 한국생물공학회 2013 Biotechnology and Bioprocess Engineering Vol.18 No.5

Potato root water (PRW) contains ~1.5%protein. In this study, expanded bed adsorption (EBA)chromatography with Amberlite XAD7HP resin adsorbent was used to isolate native protein from crude PRW. The optimal pH and ionic strength for potato protein binding onto Amberlite XAD7HP were 5.0 and 20 mmol/L. The EBA-refined proteins were dried by vacuum freeze drying and spray drying at varying outlet temperatures. Results indicated that low temperature spray drying was the most cost effective method with respect to retaining protease inhibitor activities. The dried protein concentrates appeared bright yellow or dark reddish brown, with a total glycoalkaloid content of ~170 μg/g. The protease inhibitor activity was ~400 mg/g and 11 ~ 12 mg/g for trypsin inhibition and chymotrypsin inhibition, respectively. The results presented here suggest that EBA using Amberlite XAD7HP as the adsorbent is a feasible strategy for the direct adsorption of native protein from crude PRW.

An Empirical Study on Factors Influencing Brand Attitude and Customer Loyalty in China’s Smartphone Market

Liu Fan(판류),Jae-Young Moon(문재영) 한국콘텐츠학회 2015 한국콘텐츠학회논문지 Vol.15 No.9

중국 스마트폰 시장은 2010년 이후 지속적인 성장을 하고 있으며 2014년도 기준으로 스마트폰 이용자는 약 5억 2천만명에 이르고 있다. 따라서 많은 스마트폰 관련 기업들은 자신들의 고객을 관리하기 위하여 많은 노력을 기울이고 있다. 따라서 본 연구는 스마트폰 고객충성도에 영향을 미치는 브랜드 태도가 무엇인지를 중국 스마트폰 시장을 통해 알아보고자 한다. 이에 12개 가설을 이용하여 중국에서 삼성 스마트폰을 이용하는 사용자들을 대상으로 조사를 하였다. 그 결과 브랜드 충성도와 지각된 제품 품질이 고객충성도에 긍정적인 영향을 준다는 결과를 도출하였다. The China smartphone market saw continuous growth since 2010, with total smartphone users up to 5,190 million by the end of 2014. For marketers, it seems some careful consideration will be required when it comes to deciding on how to capture loyal customers to bring profit for a company. Thus, this study aims to develop a model to investigate the factors influencing customer loyalty through brand attitude in China’s smartphone market. Twelve research hypotheses derived from this model are validated using a field survey of Sumsung smartphone users in China. The results indicate that customer loyalty is jointly influenced by brand loyalty and perceived product quality. At the same time, critical mass and perceived product quality has a significant influence on brand image.

Association of a novel antisense lncRNA TP73-AS1 polymorphisms and expression with colorectal cancer susceptibility and prognosis

Fan Jiayao,Xu Huiqing,Liu Bing,Jing Fangyuan,He Qingfang,Zheng Shasha,Shi Haining,Jiao Lefei,Fan Chunhong 한국유전학회 2022 Genes & Genomics Vol.44 No.7

Background: TP73-AS1 is a novel antisense long noncoding RNA and plays an important role in cell proliferation and cancer development. However, the link between TP73-AS1 and colorectal cancer (CRC) has not yet been reported. Objective: To explore the association of genetic variants in TP73-AS1 and its expression with CRC susceptibility and prognosis. Methods: A case-control study (including 507 CRC cases and 503 controls) and bioinformatics analysis were conducted. Results: rs9800 polymorphism was significantly related to higher risk in CRC [adjusted odds ratio (AOR) = 1.33, 95% confidence interval (CI) = 1.02-1.75, P = 0.034 in heterozygote codominant model]. There was no difference between TP73-AS1 polymorphisms and different tumor node metastasis (TNM) stages in the adjusted model. Moreover, TP73-AS1 expression level was positively related to different TNM stages. After adjusted for age, gender and TNM, higher TP73-AS1 expression levels were related to shorter recurrence-free survival time [hazard ratio (HR) = 1.66, 95% CI = 1.02-2.71, P = 0.043]. Conclusion: TP73-AS1 polymorphisms and expression may be associated with susceptibility and prognosis of CRC.

E-커머스 사용자의 평점과 리뷰 유용성이 상품 추천 시스템의 성능 향상에 미치는 영향 분석

LIU FAN,이병현(Byunghyun Lee),최일영(Ilyoung Choi),정재호(Jaeho Jeong),김재경(Jaekyeong Kim) 한국지능정보시스템학회 2022 지능정보연구 Vol.28 No.1

정보통신기술 발달로 스마트폰이 보급되면서, 온라인 쇼핑몰 서비스는 컴퓨터가 아닌 모바일로도 사용이 가능해졌다. 그로 인해 온라인 쇼핑몰 서비스를 이용하는 사용자는 급격히 증가하게 되고, 거래되는 제품의 종류 또한 방대해지고 있다. 따라서 기업은 이익을 최대화하기 위해서는 사용자가 관심을 가질만한 정보를 제공해주는 것이 중요하다. 이를 위해 사용자의 과거 행동 데이터나 행동 구매 기록을 기반으로 사용자에게 필요한 정보 또는 제품을 제시하는 것을 추천 시스템이라 한다. 현재 추천 서비스를 제공하는 대표적인 해외 기업으로는 Netflix, Amazon, YouTube 등이 있다. 최근 이러한 전자상거래 사이트에서는 사용자가 해당 제품에 대한 리뷰가 유용한지에 대해 투표할 수 있는 기능을 제공하고 있다. 이를 통해, 사용자는 유용하다고 판단되는 제품에 대한 리뷰와 평점을 참고하여 구매 의사결정을 내린다. 따라서 본 연구에서는 제품에 대한 평점과 리뷰의 유용성 정보 간의 상관관계를 파악하고, 리뷰의 유용성 정보를 추천 시스템에 반영하여 추천 성능을 확인하고자 한다. 또한 대부분의 사용자들은 만족한 제품에만 평점을 부여하는 경향이 있고 제품에 대한 평점이 높을수록 구매 의도가 높아지는 경향이 있다. 따라서 전통적인 협업 필터링 기법에 모든 평점을 반영한 결과와 4점과 5점 평점만을 반영한 추천 성능 결과를 비교하고자 한다. 이를 위해 본 연구에서는 Amazon에서 수집한 전자 제품 데이터를 사용하였으며, 실험 결과는 평점과 리뷰 유용성 정보 간 상관관계가 있는 것으로 확인되었다. 또한 모든 평점과 4점과 5점 평점만을 추천 시스템에 반영하여 추천 성능을 비교한 결과, 4점과 5점 평점만을 추천 시스템에 반영한 결과의 추천 성능이 더 높게 나타났다. 그리고 리뷰 유용성 정보를 추천 시스템에 반영한 결과는 리뷰가 유용할수록 추천 성능은 높게 나타나는 것으로 확인하였다. 따라서 이러한 실험 결과는 향후 개인화 추천 서비스의 성능 향상에 기여하고, 전자상거래 사이트에 시사점을 제공할 수 있을 것으로 본다. Because of the spread of smartphones due to the development of information and communication technology, online shopping mall services can be used on computers and mobile devices. As a result, the number of users using the online shopping mall service increases rapidly, and the types of products traded are also growing. Therefore, to maximize profits, companies need to provide information that may interest users. To this end, the recommendation system presents necessary information or products to the user based on the user"s past behavioral data or behavioral purchase records. Representative overseas companies that currently provide recommendation services include Netflix, Amazon, and YouTube. These companies support users" purchase decisions by recommending products to users using ratings, purchase records, and clickstream data that users give to the items. In addition, users refer to the ratings left by other users about the product before buying a product. Most users tend to provide ratings only to products they are satisfied with, and the higher the rating, the higher the purchase intention. And recently, e-commerce sites have provided users with the ability to vote on whether product reviews are helpful. Through this, the user makes a purchase decision by referring to reviews and ratings of products judged to be beneficial. Therefore, in this study, the correlation between the product rating and the helpful information of the review is identified. The valuable data of the evaluation is reflected in the recommendation system to check the recommendation performance. In addition, we want to compare the results of skipping all the ratings in the traditional collaborative filtering technique with the recommended performance results that reflect only the 4 and 5 ratings. For this purpose, electronic product data collected from Amazon was used in this study, and the experimental results confirmed a correlation between ratings and review usefulness information. In addition, as a result of comparing the recommendation performance by reflecting all the ratings and only the 4 and 5 points in the recommendation system, the recommendation performance of remembering only the 4 and 5 points in the recommendation system was higher. In addition, as a result of reflecting review usefulness information in the recommendation system, it was confirmed that the more valuable the review, the higher the recommendation performance. Therefore, these experimental results are expected to improve the performance of personalized recommendation services in the future and provide implications for e-commerce sites.

Research on Color Gray Code Encoding and Color Components Correction in 3D Measurement for Color Object

Fan Jianying,Liu Linchao,Gao Yang,Zhang Zeliang,Yu Lei,Liu Wei 보안공학연구지원센터(IJSIP) 2013 International Journal of Signal Processing, Image Vol.6 No.5

Note on the Shipai biota (Cambrian series 2, stage 4) yielded from a new section (Xiachazhuang) in the Maoping town of Zigui county, western Hubei province, south China

Fan Liu,Feiyang Chen,Yanlong Chen,Zhifei Zhang 대한지질학회 2017 대한지질학회 학술대회 Vol.2017 No.10