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Search Results: 1 - 10 of 78421 matches for " CHEN Wenli "
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The Role of Autophagy in Chloroplast Degradation and Chlorophagy in Immune Defenses during Pst DC3000 (AvrRps4) Infection
Junjian Dong, Wenli Chen
PLOS ONE , 2013, DOI: 10.1371/journal.pone.0073091
Abstract: Background Chlorosis of leaf tissue normally observed during pathogen infection may result from the degradation of chloroplasts. There is a growing evidence to suggest that the chloroplast plays a significant role during pathogen infection. Although most degradation of the organelles and cellular structures in plants is mediated by autophagy, its role in chloroplast catabolism during pathogen infection is largely unknown. Results In this study, we investigated the function of autophagy in chloroplast degradation during avirulent Pst DC3000 (AvrRps4) infection. We examined the expression of defensive marker genes and suppression of bacterial growth using the electrolyte leakage assay in normal light (N) and low light (L) growing environments of wild-type and atg5-1 plants during pathogen treatment. Stroma-targeted GFP proteins (CT-GFP) were observed with LysoTracker Red (LTR) staining of autophagosome-like structures in the vacuole. The results showed that Arabidopsis expressed a significant number of small GFP-labeled bodies when infected with avirulent Pst DC3000 (AvrRps4). While barely detectable, there were small GFP-labeled bodies in plants with the CT-GFP expressing atg5-1 mutation. The results showed that chloroplast degradation depends on autophagy and this may play an important role in inhibiting pathogen growth. Conclusion Autophagy plays a role in chloroplast degradation in Arabidopsis during avirulent Pst DC3000 (AvrRps4) infection. Autophagy dependent chloroplast degradation may be the primary source of reactive oxygen species (ROS) as well as the pathogen-response signaling molecules that induce the defense response.
Investigation and Analysis on Current Situation of Coal-Burning Fluorosis Prevalence  [PDF]
Wei Yan, Jun Xie, Xinshu Li, Yalin Chen, Wenli Huang, Shuang Zhou
Open Journal of Epidemiology (OJEpi) , 2017, DOI: 10.4236/ojepi.2017.72010
Abstract: Objective: The purpose of the paper is to provide the result from investigation on the current situation of coal-burning fluorosis prevalence in Chongqing City and make an assessment on the prevention and curing measures. Method: The Dean’s Method is applied to investigate on the fluorotic teeth of locally-born children aged between 8 to 12; investigate how modified cooking stoves are utilized by households and how food maize and hot pepper are being dried; and test the urinary fluorine content and pepper fluorine content. Result: The investigations show that, in the 661 villages with illness history from the 100 townships of 13 districts in Chongqing City, 11.28% (7464/ 66,162) of the children aged between 8 and 12 suffer from dental fluorosis; the stoves modified rate, qualified rate of modified stoves, and correct utilization rate of qualified modified stoves are respectively 100%, 98.82%, and 99.45%; and food maize and hot pepper’s drying rates are respectively 99.88% and 99.75%. Conclusion: The result shows that the coal-burning type fluorosis prevalence in the endemic area of Chongqing City has decreased dramatically, the preventive measure is effectively implemented, and a long-term preventive mechanism has preliminarily been established.
Optimal land use allocation of urban fringe in Guangzhou

GONG Jianzhou,LIU Yansui,CHEN Wenli,

地理学报 , 2012,
Abstract: In response to the strong drive for social and economic development, local governments have implemented urban master plans, providing measures and timeframes to address the continuous demand for land and to alleviate urban problems. In this paper, a multi-objective model was constructed to discuss the problem, including economic benefits and ecological effectiveness, in terms of land use optimization. A genetic algorithm was then adopted to solve the model, and a performance evaluation and sensitivity analysis were conducted using Pareto optimality. Results showed that a set of tradeoffs could be acquired by the allocation of land use. In addition, the Pareto solutions proved the model to be efficient; for example, a limit of 13,500 ha of urban area conformed to plan recommendations. The reduction in crop land, orchard land, grassland, and unused land provided further efficiencies. These results implied that further potential regional land resources remain and that the urban master plan is able to support sustainable local development in the years to come, as well as verified that it is feasible to use land use allocation multi-objective modeling and genetic algorithms.
Leveraging Computer Mediated Communication for Social Support in Immigrants’ Intercultural Adaptation
Wenli CHEN,Alfred CHOI Siu Kay
Cross-Cultural Communication , 2011, DOI: 10.3968/j.ccc.1923670020110703.285
Abstract: This study examines the relationship between online social support and intercultural adaptation of immigrants. Data was collected from a telephone survey conducted among Chinese immigrants in Singapore. The results of the data analysis reveal that online support has positive effect on both socio-cultural and psychological adaptation of the immigrants. Among the individual types of support, informational support demonstrates a prominent effect on the immigrants. This study suggests that online support is an efficient and valuable supplement to traditional social support for immigrants, especially when they are in the transition period and lack real life social network. Key words: Social support; Online social support; Intercultural adaptation Résumé Cette étude examine la relation entre le soutien social en ligne et l'adaptation interculturelle des immigrants. Les données ont été recueillies à partir d'un sondage téléphonique mené auprès des immigrants chinois à Singapour. Les résultats de l'analyse des données révèle que le soutien en ligne a un effet positif tant sur l'adaptation socio-culturelle et psychologique des immigrants. Parmi les différents types de soutien, un soutien informationnel démontre un effet important sur les immigrants. Cette étude suggère que le soutien en ligne est un complément efficace et précieux à l'appui social traditionnel pour les immigrants, surtout quand ils sont dans la période de transition et le manque de réseau de la vie sociale réelle. Mots-clés: Soutien social; Le soutien social en ligne; L'adaptation interculturelle
Does A Paper Being Featured on The Cover of A Journal Guarantee More Attention and Greater Impact?
Xianwen Wang,Chen Liu,Wenli Mao
Computer Science , 2014, DOI: 10.1007/s11192-014-1456-7
Abstract: Paper featured on the cover of a journal has more visibility in an issue compared with other ordinary articles for both printed and electronic journal. Does this kind of visibility guarantee more attention and greater impact of its associated content than the non-cover papers? In this research, usage and citation data of 60 issues of PLOS Biology from 2006 to 2010 are analyzed to compare the attention and scholarly impact between cover and non-cover paper. Our empirical study confirms that, in most cases, the group difference between cover and non-cover paper is not significant for attention or impact. Cover paper is not the best one, nor at the upper level in one issue considering the attention or the citation impact. Having a paper featured on the cover of a journal may be a source of pride to researchers, many institutions and researchers would even release news about it. However, a paper being featured on the cover of a journal doesn't guarantee more attention and greater impact.
Games and Culture: Using Online-gaming Data to Cluster Chinese Regional Cultures
Xianwen Wang,Wenli Mao,Chen Liu
Computer Science , 2013,
Abstract: To identify cluster of societies and cultures is not easy in subject to the availability of data. In this study, we propose a novel method to cluster Chinese regional cultures. Using geotagged online-gaming data of Chinese internet users playing online card and board games with regional features, 336 Chinese cities are grouped into 17 clusters. The distribution of clustering units shows great geographical proximity when the boundary of the clusters coincides well with the geographical boundary of provinces.
生物多样性 , 1995,
Emotional Modulation of the Attentional Blink Is Awareness-Dependent
Wenli Qian, Qianli Meng, Lin Chen, Ke Zhou
PLOS ONE , 2012, DOI: 10.1371/journal.pone.0046394
Abstract: It is well known that emotion can modulate attentional processes. Previous studies have shown that even under restricted awareness, emotional facial expressions (especially threat-related) can guide the direction of spatial attention. However, it remains unclear whether emotional facial expressions under restricted awareness can affect temporal attention. To address this issue, we used a modified attentional blink (AB) paradigm in which masked (Experiment 1) or unmasked (Experiment 2) emotional faces (fearful or neutral) were presented before the AB sequence. We found that, in comparison with neutral faces, masked fearful faces significantly decreased the AB magnitude (Experiment 1), whereas unmasked fearful faces significantly increased the AB magnitude (Experiment 2). These results indicate that effects of emotional expression on the AB are modulated by the level of awareness.
Cloning, sequencing and function ofsanA, a gene involved in nikkomycin biosynthesis ofStreptomyces ansochromogenes
Junyong Jia,Wenli Li,Wei Chen,Liping Nie,Huarong Tan
Science China Life Sciences , 2000, DOI: 10.1007/BF02881715
Abstract: Several genetically stable mutants blocked in nikkomycin biosynthesis were obtained after the slightly germinated spores ofStreptomyces ansochromogenes, a nikkomycin producer, were treated with ultra violet radiation. One of the mutants is the same in morpholotical differentiation as the wild type strain and is designated as NBB19. A DNA library was constructed using plasmid pIJ702 as cloning vector, NBB19 as cloning recipient. A 6 kb DNA fragment which can genetically complement NBB19 was cloned when screening the library for antifungal activity. Sequence analysis showed that the 3 kbBgl II -Sal I fragment contains one complete ORF (ORF1) and one partial ORF (ORF2). ORF1 is designated assanA. sanA is 1 365 bp, encoding a protein consisting of 454 amino acid residues. Database searching indicated thatsanA is homologous to the hypothetical methyltransferase inPyrococcus horikoshii with 25% identities and 41% positives. Disruptant ofsanA lost the ability to synthesize nikkomycin. It indicated thatsanA is a novel gene which is essential for nikkomycin biosynthesis.
Progress on molecular self-assembly of alkanethiols
Deng Wenli,Yang Linjing,Wang Chen,Bai Chunli
Chinese Science Bulletin , 1998, DOI: 10.1007/BF02898941
Abstract: Molecular self-assembly became an interesting research project which was paid much attention by many scientists. This article briefly tells readers thc suggestion, principle and the newest progresses on self-assembly. It introduces the progresses on molecular self-assembly of alkanethiols in detail.
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