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Search Results: 1 - 10 of 13111 matches for " Hongmei Luo "
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Study on Effect of UHV Power Grid Construction Schemes on Short Circuit Current  [PDF]
Zaihua Li, Feng Gao, Qing Wang, Shuang Zhang, Hongmei Luo, Jian Liang
Journal of Power and Energy Engineering (JPEE) , 2015, DOI: 10.4236/jpee.2015.34028
Abstract:

The commissioning of Southern Hami-Zhengzhou ±800 kV UHVDC transmission project has important significance to heighten operation reliability, transfer capability and supply electric ability of Henan power grid. However, short circuit currents of 500 kV buses in the Center of Henan are almost close to the operation upper limitation. In order to decrease the short circuit currents effectively, it’s necessary to strengthen the network structure of Center of Henan power grid and calculate short circuit currents. Two schemes of strengthening the network structure of Center of Henan power grid are studied. The calculated values of short circuit currents of some important 500 kV buses in the two schemes are still bigger than excepted. According to the latest Plan of State Grid, Yubei UHV substation and Zhumadian UHV substation located in Henan power grid. The calculated values of short circuit currents of some important 500 kV buses with the commissioning of Yubei UHV and Zhumadian UHV are qualified. So, reasonable network structure with UHV is suitable to heighten transfer capability and supply electric ability of Henan power grid.

Clinical Practice Examples of Dachaihu Decoction  [PDF]
Hongmei Zhu
Chinese Medicine (CM) , 2013, DOI: 10.4236/cm.2013.42007
Abstract:

This paper mainly describes the experiences of clinical application of Dachaihu Decoction in treating chronic pelvic infection, coronary heart disease, insomnia, and hepatolithiasis.

Looking Back at the New Knowledge Bases of EFL Teacher Education  [PDF]
Hongmei Zhu
Creative Education (CE) , 2013, DOI: 10.4236/ce.2013.412106
Abstract: This article discusses the trend of reconceptualizing EFL teachers’ knowledge base to avoid the separation between theory and practice, which is in particular reflected on the establishment of some new EFL teachers’ knowledge domains. However, the horizontal categorizing approaches of teachers’ knowledge establish another gap between theory and practice and the hierarchical approach formulates so much abstract knowledge for teachers. The construct of knowledge of EFL classroom interaction is a pilot inquiry to create an interface between “theory knowledge” and “practice knowledge” from the teachers’ needs. In the end of the article, a rough knowledge framework is constructed for EFL classroom interaction on teachers’ needs.
On a System of Second-Order Nonlinear Difference Equations  [PDF]
Hongmei Bao
Journal of Applied Mathematics and Physics (JAMP) , 2015, DOI: 10.4236/jamp.2015.37110
Abstract: This paper is concerned with dynamics of the solution to the system of two second-order nonlinear difference equations \"\", \"\", \"\", where \"\", \"\", \"\", i = 0, 1. Moreover, the rate of convergence of a solution that converges to the equilibrium of the system is discussed. Finally, some numerical examples are considered to show the results obtained.
Learning Opportunity and EFL Teachers’ Questions  [PDF]
Hongmei Zhu
Open Journal of Social Sciences (JSS) , 2016, DOI: 10.4236/jss.2016.43027
Abstract: As postmethod EFL teaching method was proposed in 1999, ideas on teaching and learning be-came unthinkably various and dynamic. The views on teachers’ questions also changed a lot in postmethod period. The term of learning opportunity bridged teaching and learning in this situation. This article aims to explore the way that an expert teacher, an experienced teacher and a novice teacher provide learning opportunities for the students in their question-answer sequences. A CA approach is used to analyze three teachers’ questions based on four different students’ first responses: Right Answer, Partly Right Answer, Incomplete Answer and Refusal Answer. The results suggest that the expert teacher can provide more learning opportunities by strengthening students’ identities, extending students’ contributions, attracting students’ involvement and there is an insignificant relation between the type of questions and learning opportunities. It is suggested that EFL teachers can be more aware of the local and dynamic teaching context and promote more negotiation of meaning and students’ involvement.
Surfactant-Templated Mesoporous Metal Oxide Nanowires
Hongmei Luo,Qianglu Lin,Stacy Baber,Mahesh Naalla
Journal of Nanomaterials , 2010, DOI: 10.1155/2010/750960
Abstract: We demonstrate two approaches to prepare mesoporous metal oxide nanowires by surfactant assembly and nanoconfinement via sol-gel or electrochemical deposition. For example, mesoporous Ta2O5 and zeolite nanowires are prepared by block copolymer Pluronic 123-templated sol-gel method, and mesoporous ZnO nanowires are prepared by electrodeposition in presence of anionic surfactant sodium dodecyl sulfate (SDS) surfactant, in porous membranes. The morphologies of porous nanowires are studied by scanning electron microscopy (SEM) and transmission electron microscopy (TEM) analyses.
Analysis of the transcriptome of Panax notoginseng root uncovers putative triterpene saponin-biosynthetic genes and genetic markers
Luo Hongmei,Sun Chao,Sun Yongzhen,Wu Qiong
BMC Genomics , 2011, DOI: 10.1186/1471-2164-12-s5-s5
Abstract: Background Panax notoginseng (Burk) F.H. Chen is important medicinal plant of the Araliacease family. Triterpene saponins are the bioactive constituents in P. notoginseng. However, available genomic information regarding this plant is limited. Moreover, details of triterpene saponin biosynthesis in the Panax species are largely unknown. Results Using the 454 pyrosequencing technology, a one-quarter GS FLX titanium run resulted in 188,185 reads with an average length of 410 bases for P. notoginseng root. These reads were processed and assembled by 454 GS De Novo Assembler software into 30,852 unique sequences. A total of 70.2% of unique sequences were annotated by Basic Local Alignment Search Tool (BLAST) similarity searches against public sequence databases. The Kyoto Encyclopedia of Genes and Genomes (KEGG) assignment discovered 41 unique sequences representing 11 genes involved in triterpene saponin backbone biosynthesis in the 454-EST dataset. In particular, the transcript encoding dammarenediol synthase (DS), which is the first committed enzyme in the biosynthetic pathway of major triterpene saponins, is highly expressed in the root of four-year-old P. notoginseng. It is worth emphasizing that the candidate cytochrome P450 (Pn02132 and Pn00158) and UDP-glycosyltransferase (Pn00082) gene most likely to be involved in hydroxylation or glycosylation of aglycones for triterpene saponin biosynthesis were discovered from 174 cytochrome P450s and 242 glycosyltransferases by phylogenetic analysis, respectively. Putative transcription factors were detected in 906 unique sequences, including Myb, homeobox, WRKY, basic helix-loop-helix (bHLH), and other family proteins. Additionally, a total of 2,772 simple sequence repeat (SSR) were identified from 2,361 unique sequences, of which, di-nucleotide motifs were the most abundant motif. Conclusion This study is the first to present a large-scale EST dataset for P. notoginseng root acquired by next-generation sequencing (NGS) technology. The candidate genes involved in triterpene saponin biosynthesis, including the putative CYP450s and UGTs, were obtained in this study. Additionally, the identification of SSRs provided plenty of genetic makers for molecular breeding and genetics applications in this species. These data will provide information on gene discovery, transcriptional regulation and marker-assisted selection for P. notoginseng. The dataset establishes an important foundation for the study with the purpose of ensuring adequate drug resources for this species.
Nanocomposites 2012
Guifu Zou,Hongmei Luo,Baoquan Sun,Menka Jain
Journal of Nanotechnology , 2012, DOI: 10.1155/2012/267135
Abstract:
Nanocomposites
Guifu Zou,Hongmei Luo,Baoquan Sun,Menka Jain
Journal of Nanotechnology , 2011, DOI: 10.1155/2011/870829
Abstract:
Nanocomposites
Guifu Zou,Hongmei Luo,Baoquan Sun,Menka Jain,Huisheng Peng
Journal of Nanotechnology , 2011, DOI: 10.1155/2011/870829
Abstract:
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