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Patrícia Martinez-Oliveira,Luísa Zuravski,Micaela Federizzi de Oliveira,Deise Jaqueline Ströher,Ritiéle Pinto Coelho,Bruna Cocco Pilar,Luís Flávio Souza de Oliveira,Jacqueline da Costa Escobar Piccoli 한국식품영양과학회 2021 Journal of medicinal food Vol.24 No.6
Yacon is an Andean plant that has been used in folk medicine for its medicinal properties. The beneficial effects of this plant are possibly due to the high content of phenolic compounds present in its leaves and roots. This study evaluated the in vitro toxicity of the hydroalcoholic extract of leaves and roots from yacon (1, 10, 50, and 100 μg/mL) through cell viability tests, genotoxic and mutagenic activity in leukocytes culture cells; and cytotoxicity and apoptosis cell death (1, 10, 50, 100, and 500 μg/mL) in cell line originally established from the primary mouse embryonic fibroblast cells that were cultured by the designated protocol, so-called 3T3 protocol “3-day transfer, inoculum 3 × 105 cells” (3T3 cell line). No mutagenic and cytotoxic activities were observed in leukocyte cultures. Cytotoxic activity was evidenced in the highest concentrations of yacon leaf extract (50 and 100 μg/mL), whereas all concentrations tested with yacon leaf extract there was induction for apoptosis in the 3T3 cells. Genotoxic potential was observed only at higher doses of leaf (50 and 100 μg/mL) and root (100 μg/mL) extract. These results suggest that yacon leaf at high concentrations may present toxic potential showing concentration-dependent behavior; however, in vivo studies should be performed to validate these results.
Le Lu,Ilan Alon 서울대학교 국제학연구소 2004 Journal of International and Area Studies Vol.11 No.2
It is sometimes said that Chinese culture is simultaneously the oldest and the youngest culture in the World: oldest because it has about 5000 years of history and youngest because of a history that often made radical changes in the cultural values possible, if not necessary. This article contains information that is useful to international business practitioners and academics interested in Chinese business by specifically focusing on the cultural trends that affect the young and educated population of Shanghai in today’s China. This group is important as it consists of both the potential labor force and the target market for multinational companies, and is likely to form the present and future business leaders of China. The paper discusses the new hybridized form of Chinese culture that has emerged among the educated youth in Shanghai, one that embodies a unique combination of Eastern and Western cultural elements.
Le Lu,Ilan Alon 서울대학교 국제학연구소 2004 Journal of International and Area Studies Vol.11 No.2
It is sometimes said that Chinese culture is simultaneously the oldest and the youngest culture in the World: oldest because it has about 5000 years of history and youngest because of a history that often made radical changes in the cultural values possible, if not necessary. This article contains information that is useful to international business practitioners and academics interested in Chinese business by specifically focusing on the cultural trends that affect the young and educated population of Shanghai in today s China. This group is important as it consists of both the potential labor force and the target market for multinational companies, and is likely to form the present and future business leaders of China. The paper discusses the new hybridized form of Chinese culture that has emerged among the educated youth in Shanghai, one that embodies a unique combination of Eastern and Western cultural elements.
Lu, Xiaoxiao,Holt, Cheryl L,Chen, Julia C,Le, Daisy,Chen, Jingjing,Kim, Gil-yong,Li, Jun,Lee, Sunmin Asian Pacific Journal of Cancer Prevention 2016 Asian Pacific journal of cancer prevention Vol.17 No.11
Background: Chinese and Korean Americans have lower colorectal cancer (CRC) screening rates than other racial/ ethnic groups, which may be explained by a low level of CRC knowledge and a high level of misconceptions. This study explores the role of knowledge in CRC screening among these groups. Methods: Chinese (N=59) and Korean (N=61) Americans older than 50 were recruited from the Washington D.C. Metropolitan area. They completed a detailed survey and participated in focus groups to discuss their knowledge on CRC and CRC screening. Seventeen physicians, community leaders, and patient navigators participated in key informant interviews. Using a mixed methods approach, data were analyzed quantitatively and qualitatively. Results: Participants lacked knowledge about CRC and CRC screening. More than half did not know that screening begins at age 50 and there are several types of tests available. More than 30% thought CRC screening was not necessary if there were no symptoms or there was nothing they could do to prevent CRC. Focus group findings suggested understanding about CRC was limited by an inadequate source of linguistically and culturally relevant health information. For example, many participants considered CRC a western condition mainly caused by unhealthy diet. This led to under-estimations about their susceptibility to CRC. Knowledge was positively associated with self-reported screening. Participants who had higher knowledge scores were more likely to report ever having had a colonoscopy and confidence in ability to have CRC screening. Conclusions: Mixed-methods analysis provides multi-faceted perspectives on CRC knowledge and its influence on screening. Study findings can help inform interventions to increase CRC screening among Chinese and Korean Americans.
Lu Miao-Hua,Lin Dong-Qiang,Wu Yuan-Chun,Yun Jun-Xian,Mei Le-He,Yao Shan-Jing The Korean Society for Biotechnology and Bioengine 2005 Biotechnology and Bioprocess Engineering Vol.10 No.2
Mixed-mode hydrophobic/ionic matrices exhibit a salt-tolerant property for adsorbing target protein from high-ionic strength feedstock, which allows the application of undiluted feedstock via an expanded bed process. In the present work, a new type of mixed-mode adsorbent designed for expanded bed adsorption, Fastline $PRO^{\circledR}$, was challenged for the capture of nattokinase from the high ionic fermentation broth of Bacillus subtilis. Two important factors, pH and ion concentration, were investigated with regard to the performance of nattokinase ad-sorption. Under initial fermentation broth conditions (pH 6.6 and conductivity of 10 mS/cm) the adsorption capacity of nattokinase with Fastline PRO was high, with a maximum capacity of 5,350 U/mL adsorbent. The elution behaviors were investigated using packed bed adsorption experiments, which demonstrated that the effective desorption of nattokinase could be achieved by effecting a pH of 9.5. The biomass pulse response experiments were carried out in order to evaluate the biomass/adsorbent interactions between Bacillus subtilis cells and Fastline PRO, and to demonstrate a stable expanded bed in the feedstock containing Bacillus subtilis cells. Finally, an EBA process, utilizing mixed-mode Fastline PRO adsorbent, was optimized to capture nattokinase directly from the fermentation broth. The purification factor reached 12.3, thereby demonstrating the advantages of the mixed-mode EBA in enzyme separation.
ZOU Le,BAI Rui-Zhu,XIANG Chun-Lei,LI Lu 한국식물분류학회 2024 식물 분류학회지 Vol.54 No.1
<i>Hypericum</i> L. (Hypericaceae) is one of the best-selling herbal medicines in the world comprising ca. 500 species of herbs, shrubs, and small trees. <i>Hypericum petiolulatum</i> Hook. f. & Thomson ex Dyer is widely distributed in China, Vietnam, Myanmar, Nepal, India, Malaysia, and Bhutan and is used as a traditional herb to treat hemoptysis and inflammation. In this study, we sequenced and assembled the complete chloroplast (cp) genome of <i>H. petiolulatum</i>. The complete plastome of <i>H. petiolulatum</i> was 136,105 bp in length, with a large single copy region (LSC) of 93,709 bp, a small single copy region (SSC) of 11088 bp and two identical inverted repeats (IRs) of 15,654 bp. The overall GC content of the plastome was 37.0%, while GC contents of the LSC, SSC, and each IR were 35.5%, 31.0%, and 43.8%, respectively. In addition, 116 genes consisting of 76 protein-coding genes, six ribosomal RNA genes, and 34 transfer RNA genes were identified. A phylogenetic analysis of 14 taxa inferred based on cp genome sequences revealed a close relationship between <i>H. petiolulatum</i> and <i>H. perforatum</i>. The complete cp genome sequence of <i>H. petiolulatum</i> reported in this paper will facilitate population and phylogenomics studies of this medicinal plant group.
A Method of Extract News Events Based on Three Level Models
Jing Lu,Mao Ye,Zhi Tang,Xiao-Jun Huang,Jia-Le Ma 보안공학연구지원센터 2016 International Journal of Signal Processing, Image Vol.9 No.5
In this paper, the method ofextract event from newspaper is proposed. First, the candidate sentences are select by using trigger word. Then, statistic models in three levels are consisted of extract model, which is sentences level, news level and topic level is used to extract event from candidate sentences and the probability of extracted events is calculated by three levels model. Finally, the method proposed in this paper is used to extract 4 type events. The experiment result shows this method have ideal effect on event extraction.
( Ping Lu ),( Ke Jiang ),( Ya-qiao Hao ),( Wan-ying Chu ),( Yu-dong Xu ),( Jia-yao Yang ),( Jia-le Chen ),( Guo-hong Zeng ),( Zhou-hang Gu ),( Hong-xin Zhao ) 한국미생물 · 생명공학회 2021 Journal of microbiology and biotechnology Vol.31 No.9
Members of the genus Bacillus are known to play an important role in promoting plant growth and protecting plants against phytopathogenic microorganisms. In this study, 21 isolates of Bacillus spp. were obtained from the root micro-ecosystem of Suaeda glauca. Analysis of the 16S rRNA genes indicated that the isolates belong to the species Bacillus amyloliquefaciens, Bacillus velezensis, Bacillus subtilis, Bacillus pumilus, Bacillus aryabhattai and Brevibacterium frigoritolerans. One of the interesting findings of this study is that the four strains B1, B5, B16 and B21 are dominant in rhizosphere soil. Based on gyrA, gyrB, and rpoB gene analyses, B1, B5, and B21 were identified as B. amyloliquefaciens and B16 was identified as B. velezensis. Estimation of antifungal activity showed that the isolate B1 had a significant inhibitory effect on Fusarium verticillioides, B5 and B16 on Colletotrichum capsici (syd.) Butl, and B21 on Rhizoctonia cerealis van der Hoeven. The four strains grew well in medium with 1-10% NaCl, a pH value of 5-8, and promoted the growth of Arabidopsis thaliana. Our results indicate that these strains may be promising agents for the biocontrol and promotion of plant growth and further study of the relevant bacteria will provide a useful reference for the development of microbial resources.
Novel Filtering Power Divider with External Isolation Resistors
Yun Long Lu,Shun Wang,Gao-Le Dai,Kai Li 한국전자통신연구원 2015 ETRI Journal Vol.37 No.1
In this paper, a novel filtering power divider with external isolation resistors is presented. The proposed power divider can be considered as an integration of a bandpass filter and a Gysel power divider. Based on the circuit topology, a high-order filtering power divider can be easily realized. Odd- and even-mode models are employed to analyze the filtering and power splitting functions. For demonstration, a third-order filtering power divider operating at 1.5 GHz is designed and implemented. The measured results exhibit an isolation between the output ports that is better than 20 dB at around the center frequency.