A Study on Interface for Heterogeneous Multiprocessing System

Le Ping,A. S. Fong,Andrew Layfield 대한전자공학회 1995 JTC-CSCC : Joint Technical Conference on Circuits Vol.- No.-

Profiles of Bacillus spp. Isolated from the Rhizosphere of Suaeda glauca and Their Potential to Promote Plant Growth and Suppress Fungal Phytopathogens

( 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.

A Study on the Problems and Countermeasures of Environmental Pollution Caused by China's Rural Development - Enlightened from the Semaul movement in Korea -

Wang Young Le,Fan Ping,Kim, Dong-Baek,So, Kwang-Sup 한국자치행정학회 2009 한국자치행정학보 Vol.23 No.1

중국은 개혁개방 이래 농촌지역 경제의 급속 성장에 따라 농촌의 환경문제가 관심의 대상이 되고 있다. 특히 심각한 환경오염은 농촌의 생태, 생산 및 생활 안전에 대해 큰 영향을 미쳐 농촌의 경제와 사회적인 지속 가능한 개발에 대해 매우 중요한 억제요인이 되었다. 중국 농촌 환경오염의 원인을 향진기업(乡镇企业)의 오염 문제, 농업 비점 오염 문제, 대규모 축산업 오염 문제, 생활 오수 및 폐기물의 오염 문제 등을 중심으로 분석하였다. 중국 농촌 환경 문제를 해결하려면 한국의 새마을운동을 거울삼아야 한다. 새마을 운동으로 인해 농촌의 생활환경이 몰라보게 달라졌고 농촌의 가난이 물러가기 시작했으며 국민들의 사고와 행동이 변화되는 조짐을 보였다. 한국의 산림녹화정책의 효과를 중심으로 중국의 환경오염 방지 대책에 대해 살펴봤다. 중국에서 농촌 환경 오염문제를 해결하려면 우선 향진기업의 오염 통제를 강화하고 기업은 합리적인 분배해야 하고, 농업 비점오염의 통제를 강화하고, 생태 농업을 적극적으로 개발해야 하고, 과학적이고 합리적인 축산업 시스템을 구축하고, 가축 배출물에 대한 종합 처리를 위해 간편하고 효율적인 처리기술을 보급하여야 한다. 한국의 새마을 운동과 산림녹화계획 및 친환경 농업 등 성공한 경험으로부터도 좋은 교훈을 얻을 수 있다는 점을 비교행정론적으로 분석하였다. Along with the rural industrialization and the urbanized scale's unceasing expansion, along with the municipal pollution to the countryside pollution spread, pollution along with the east to the west shifts, along with the population activity frequent and rural economic development speed's quickening, China rural environment pollution assumes the trend of development. The countryside clean river sand the lake are getting fewer and fewer; The countryside soil erosion and the desertification area are expanding unceasingly; Countryside source of pollution with difficulty active control; The countryside beautiful scenery and the clear air are leaving us to go slowly. The rural environment protection's pressure is getting bigger and bigger. the main reasons Cause China rural environment pollution are the following five points: 1)The agricultural production creates pollution. 2) Infrastructure backwardness produces life pollution. 3)The rural enterprise layout is improper and the lack of insufficiently control produces industrial pollution. 4) Water quality of the water source area dropping is unable to withstand the load. 5) The mineral resource development, blind chop or the unreasonable non-farming resource development are important factors causing environmental pollution and ecological degradation. In the hope of China's rural ecological environment management, experiences of South Korea on how to pay attention to the rural ecological environment construction in the new rural areas building are introduced, the present situation and causes of the environment pollution in the rural area are expounded, and a countermeasure to the problem is put forward, which is to follow the way of sustainable development, to establish good farm biological environment and to uphold the coordinational development of the rural environment and the economy.

Chemical Constituents of the Leaves of Glochidion obliquum and Their Bioactivity

Tran Dinh Thang,Ping-Chung Kuo,Chun-Shu Yu,Yuh-Chiang Shen,Le Thi Mai Hoa,Tran Van Thanh,Yao-Haur Kuo,Mei-Lin Yang,Tian-Shung Wu 대한약학회 2011 Archives of Pharmacal Research Vol.34 No.3

A new flavonoid glycoside, globlin A (1), and eleven known compounds were isolated from methanolic extracts of the leaves of Glochidion obliquum. The structure of this new compound was established with a combination of 2D NMR techniques (COSY, NOESY, HMQC and HMBC) and HR-ESI-MS analyses. Chemical structures of the other known compounds were identified by comparison of their spectroscopic and physical data with those reported in the literature. Some of the isolates were examined for their bioactivities. Among the tested compounds, rotundic acid (4) displayed significant cytotoxicity and anti-inflammatory activities.

G-protein Coupled Estrogen Receptor 1 Expression in Primary Breast Cancers and Its Correlation with Clinicopathological Variables

Hao-jun Luo,Ping Luo,Guang-lun Yang,Qiong-le Peng,Man-ran Liu,Gang Tu 한국유방암학회 2011 Journal of breast cancer Vol.14 No.3

Purpose: G-protein coupled estrogen receptor 1 (GPER) probably play important roles in the progression of breast cancer including endocrine therapeutic resistance. We evaluated GPER in primary breast cancers. Methods: Immunohistochemistry was used to detect GPER in paraffin-embedded tissues of primary breast cancers from 423 patients and GPER expression was correlated with clinicopathological factors. Results: GPER was expressed in 63.8% of specimens, coexpressed with estrogen receptor alpha (ERα) in 36.6% of tumors and was positive in 62.5% of the ERα-negative tumors. The expression of GPER had no relationship with the status of ERα, progesterone receptor and HER2. Although the expression of GPER was significantly inversely related with nodal status (p=0.045), no correlation between GPER expression and other clinicopathological variables (age, menstruation status, tumor size, stage, histologic grade, Nottingham Prognostic Index or pathological type) was found. Conclusion: GPER and ERα exhibited independent expression pattern of distribution in primary breast cancers. A long-term follow-up and a more definite molecular phenotype for ER are necessary in confirming studies.

Interface for a Heterogeneous Multiprocessing System

A. S. Fong,Le Ping,A. Layfield 대한전자공학회 1994 JTC-CSCC : Joint Technical Conference on Circuits Vol.- No.-

Comparison of Epidermal Growth Factor Receptor Mutations between Primary Tumors and Lymph Nodes in Non-small Cell Lung Cancer: a Review and Meta-analysis of Published Data

Wang, Feng,Fang, Ping,Hou, Dan-Yang,Leng, Zai-Jun,Cao, Le-Jie Asian Pacific Journal of Cancer Prevention 2014 Asian Pacific journal of cancer prevention Vol.15 No.11

Background: Epidermal growth factor receptor (EGFR) mutations in non-small cell lung cancer (NSCLC) can predict the clinical response to tyrosine kinase inhibitor (TKI) therapy. However, EGFR mutations may be different in primary tumors (PT) and metastatic lymph nodes (MLN). The aim of this study was to compare EGFR mutations between PT and the corresponding MLN in NSCLC patients, and provide some guidelines for clinical treatment using TKI therapy. Materials and Methods: A systematic review and meta-analysis was performed with several research databases. Relative risk (RR) with the 95% confidence interval (CI) were used to investigate the EGFR mutation status between PT and the corresponding MLN. A random-effects model was used. Results: 9 publications involving 707 patients were included in the analysis. It was found that activation of EGFR mutations identified in PT and the corresponding MLN was 26.4% (187/707) and 19.9% (141/707), respectively. The overall discordance rate in our meta-analysis was 12.2% (86/707). The relative risk (RR) for EGFR mutation in PT relative to MLN was 1.33 (95%CI: 1.10-1.60; random-effects model). There was no significant heterogeneity between the studies ($I^2$=5%, p=0.003). Conclusions: There exists a considerable degree of EGFR mutation discrepancy in NSCLC between PT and corresponding MLN, suggesting that tumor heterogeneity might arise at the molecular level during the process of metastasis.

Optimal Data Scheduling and Admission Control for Backscatter Sensor Networks

Hoang, Dinh Thai,Niyato, Dusit,Wang, Ping,Kim, Dong In,Bao Le, Long Institute of Electrical and Electronics Engineers 2017 IEEE Transactions on Communications Vol. No.

<P>This paper studies the data scheduling and admission control problem for a backscatter sensor network (BSN). In the network, instead of initiating their own transmissions, the sensors can send their data to the gateway just by switching their antenna impedance and reflecting the received RF signals. As such, we can reduce remarkably the complexity, the power consumption, and the implementation cost of sensor nodes. Different sensors may have different functions, and data collected from each sensor may also have a different status, e.g., urgent or normal, and thus we need to take these factors into account. Therefore, in this paper, we first introduce a system model together with a mechanism in order to address the data collection and scheduling problem in the BSN. We then propose an optimization solution using the Markov decision process framework and a reinforcement learning algorithm based on the linear function approximation method, with the aim of finding the optimal data collection policy for the gateway. Through simulation results, we not only show the efficiency of the proposed solution compared with other baseline policies, but also present the analysis for data admission control policy under different classes of sensors as well as different types of data.</P>

Molecular Level Study of Graphene Networks Functionalized with Phenylenediamine Monomers for Supercapacitor Electrodes

Song, Bo,Choi, Ji Il,Zhu, Yuntong,Geng, Zhishuai,Zhang, Le,Lin, Ziyin,Tuan, Chia-chi,Moon, Kyoung-sik,Wong, Ching-ping American Chemical Society 2016 Chemistry of materials Vol.28 No.24

<P>Three phenylenediamine (PD) monomers, o-phenylenediamine (OPD), m-phenylenediamine (MPD), and p-phenylenediamine (PPD), were used to prepare the functionalized graphene (PD/rGO) networks. The results obtained from a series of chemical, thermal, and rheological analyses elucidated the mechanism of the covalent bonding and the existence of cross-linked graphene networks. The measured XRD patterns and molecular dynamic calculations discovered that those PPD and MPD molecules could enlarge graphene interlayer spacing to 1.41 and 1.30 nm, respectively, while OPD molecules were disorderly bonded or nonbonded to the basal planes of graphene layers, resulting in small and variable inter layer distances. The loadings of PD monomers were optimized to achieve superior supercapacitor performance. Electrochemical study showed that PPD/rGO exhibited the largest specific capacitance of 422 F/g with excellent cycling stability and low charge transfer resistance. The large variations in the capacitance values among PD/rGO networks with different PD monomers were explained by the difference in the graphene nanostructures, reversible redox transitions, and charge transfer characteristics. Particularly, density function theory calculations were adopted to compare electronic properties of the PD/rGO composites, including formation energy, electron density distribution, HOMO energy levels, and electron density of states near the Fermi level.</P>

Suppression of CDK2 expression by siRNA induces cell cycle arrest and cell proliferation inhibition in human cancer cells

( Xiang E Long ),( Zhao Hui Gong ),( Lin Pan ),( Zhi Wei Zhong ),( Yan Ping Le ),( Qiong Liu ),( Jun Ming Guo ),( Jiu Chang Zhong ) 한국생화학분자생물학회 (구 한국생화학회) 2010 BMB Reports Vol.43 No.4

Cyclin-dependent kinase 2 (CDK2) is a member of serine/threonine protein kinases, which initiates the principal transitions of the eukaryotic cell cycle and is a promising target for cancer therapy. The present study was designed to inhibit cdk2 gene expression to induce cell cycle arrest and cell proliferation suppression. Here, we constructed a series of RNA interference (RNAi) plasmids which can successfully express small interference RNA (siRNA) in the transfected human cells. The results showed that the RNAi plasmids containing the coding sequences for siRNAs down-regulated the cdk2 gene expression in human cancer cells at the mRNA and the protein levels. Furthermore, we found that the cell cycle was arrested at G0G1 phases and the cell proliferation was inhibited by different siRNAs. These results demonstrate that suppression of CDK2 activity by RNAi may be an effective strategy for gene therapy in human cancers. [BMB reports 2010; 43(4): 291-296]