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Search Results: 1 - 10 of 25565 matches for " Dong Lemeng "
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Cloning of Critical Gene Fragments in Saikosaponin Biosynthesis and Associated Sequence Analysis
柴胡皂苷合成途径中三个关键酶基因片段的克隆与序列分析

Dong Lemeng,Liu Yujun,Wei Jianhe,
董乐萌
,刘玉军,魏建和

世界科学技术-中医药现代化 , 2008,
Abstract: cDNA fragments,encoding HMGR,IPPI and FPS in Bupleurum chinense DC.were amplified by RT-PCR with the total RNA of the young roots as a template,cDNA fragments of HMGR (GenBank accession no.EU400217),IPPI (EU400218),and FPS (EU400219) were 470bp,532bp,466bp in length,encoding 157,177,155 amino acids respectively.The deduced amino acid sequence of cDNA encoding HMGR,IPPI and FPS showed the highest amino acid identity to E.ulmoides (93%),B.falcatum (99%),and C.asiatica (97%) respectively.The deduced amino acid...
Analysis on the Main Factors Affecting the Reliability of Test Papers
Jiang Zhu,Lemeng Han
Journal of Language Teaching and Research , 2011, DOI: 10.4304/jltr.2.1.236-238
Abstract: Reliability is an important factor to evaluate test papers. This paper analyzes the factors which affect the reliability of test papers and discusses the methods to increase the reliability of test papers.
The Application of Context Theory in English Teaching of Reading
Jiang Zhu,Lemeng Han
English Language Teaching , 2010, DOI: 10.5539/elt.v3n1p142
Abstract: Context theory is a very important theory in English teaching, especially the teaching of reading. This paper first analyzes the theory of context, including the features of context and some principles in context theory. Then the paper discusses the application of context theory in English teaching of reading, including some problems met in reading comprehension test and some teaching methods related to context theory.
Novel Mutations of RPGR in Chinese Retinitis Pigmentosa Patients and the Genotype-Phenotype Correlation
Liping Yang, Xiaobei Yin, Lina Feng, Debo You, Lemeng Wu, Ningning Chen, Aijun Li, Genlin Li, Zhizhong Ma
PLOS ONE , 2014, DOI: 10.1371/journal.pone.0085752
Abstract: X-linked Retinitis Pigmentosa (XLRP) accounts for 10–20% of all RP cases, and represents the most severe subtype of this disease. Mutations in the Retinitis Pigmentosa GTPase Regulator (RPGR) gene are the most common causes of XLRP, accounting for over 70–75% of all XLRP cases. In this work, we analyzed all the exons of RPGR gene with Sanger sequencing in seven Chinese XLRP families, two of these with a provisional diagnosis of adRP but without male-to-male transmission. Three novel deletions (c.2233_34delAG; c.2236_37delGA and c.2403_04delAG) and two known nonsense mutations (c.851C→G and c.2260G→T) were identified in five families. Two novel deletions (c.2233_34delAG and c.2236_37delGA) resulted in the same frame shift (p.E746RfsX22), created similar phenotype in Family 3 and 4. The novel deletion (c.2403_04delAG; p.E802GfsX31) resulted in both XLRP and x-linked cone-rod dystrophy within the male patients of family 5, which suggested the presence of either genetic or environmental modifiers, or both, play a substantial role in disease expression. Genotype-phenotype correlation analysis suggested that (1) both patients and female carriers with mutation in Exon 8 (Family 1) manifest more severe disease than did those with ORF15 mutations (Family 2&3&4); (2) mutation close to downstream of ORF15 (Family 5) demonstrate the early preferential loss of cone function with moderate loss of rod function.
The Effect of Knowledge Management on Product Innovation - Evidence from the Chinese Software Outsourcing Vendors  [PDF]
Dong Yang
iBusiness (IB) , 2011, DOI: 10.4236/ib.2011.31003
Abstract: The knowledge acquisition and exploitation are becoming more and more for local vendors in offshore outsourcing cooperation. In the process of product innovation, internal knowledge sharing (IKS), external knowledge acquisition (EKA) and their interactive relationship is discussed. Through the using of the method of 3SLS, the results of STATA indicate that IKS and EKA positively complement for product innovation. Furthermore, the result of SPSS reveals that knowledge exploitation mediates the (IKS) EKA and product innovation.
Research of Extent of Well Control of Explored Reserves of Lithologic Deposit in Delta Front Area  [PDF]
Ma Dong
Advances in Materials Physics and Chemistry (AMPC) , 2012, DOI: 10.4236/ampc.2012.24B050
Abstract: Recently the explored reserves submitted in the oil field mainly situate at the end of deposit in delta front area. During the exploitation and production, problems mainly show on lithologic deposit, for example, reserves are low and difficulty of producing is huge. Based on results of sand body dissection of dense well network of developed oil deposit, and combined with explored reserves, this article researches a relation between extent of well control and reserves precision of explored reserves of lithologic deposit in delta front area by well diluted method. This article has significant influence on objectively understanding our unexploited reserves
The Technical Conditions of Modern Logistics  [PDF]
Zhaojiang Dong
Open Journal of Social Sciences (JSS) , 2013, DOI: 10.4236/jss.2013.15005
Abstract:

Modern logistics is an important link of the modern commodity economy and it is also an important pillar in the development of modern economy. What things are needed in the establishment and development of modern logistics industry are not just the funds, equipment and management. And it is not based on the imitation and transplantation simply. The formation and development of modern logistics industry is the objective requirements of the advanced enterprise management technology. Advanced information technology and standardized management are the technical foundation of modern logistics industry established.

Enterprise Culture: The Headspring of the Enterprise Competition Ability  [PDF]
Zhaojiang Dong
Open Journal of Social Sciences (JSS) , 2013, DOI: 10.4236/jss.2013.15006
Abstract: There are many factors that can decide and affect the enterprise competition ability. From the value chain, the article has analyzed and inquired into the formation and promotion of enterprise competition, and think that the enterprise culture is headspring of enterprise competition ability, that the product or service is the carrying of business enterprise competition ability, and that the value chain is the guaranteeing of the enterprise competition ability. The enterprise culture is the headspring of nutrition to the enterprise competition ability, it is a key factor that affects the enterprise competition ability.
PD Power-Level Control Design for MHTGRs  [PDF]
Zhe Dong
Journal of Power and Energy Engineering (JPEE) , 2014, DOI: 10.4236/jpee.2014.24019
Abstract: Due to its inherent safety feature, the modular high temperature gas-cooled reactor (MHTGR) has been seen as one of the best candidates in building next generation nuclear plants (NGNPs). Since the MHTGR dynamics has high nonlinearity, it is necessary to develop nonlinear power-level controller which is not only beneficial to the safe, stable, efficient and autonomous operation of the MHTGR but also easy to be implemented practically. In this paper, based on the concept of shiftedectropy
and the physically-based control design approach, it is proved theoretically that the simple proportional-differential (PD) output-feedback power-level control can provide globally asymptotic closed-loop stability. Numerical simulation results verify the theoretical results and show the influence of the controller parameters to the dynamic response.
Analyzing the Dynamic Evolution of Co-Opetition Mechanism among Shipping Service Resources  [PDF]
Gang Dong
Open Journal of Social Sciences (JSS) , 2015, DOI: 10.4236/jss.2015.37009
Abstract:

Considering the major shipper choice factors of potential demand, charge sensitivity and service cost coefficient, the paper analyzes the dynamic evolution of co-opetition mechanism among shipping service resources. A number of interesting results are obtained: when the strategy profile moves from perfectly competition to perfectly co-operation, the optimal charge will increase while the improvement of shipping service is uncertain; because long-term equilibrium state is perfectly competition strategy profile, there is a need for appropriate institutional arrangement to reduce the saddle-point position in order to achieve maximize profit for the overall shipping service resources.

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