关键词：
list scheduling;arbitrary processor network;DAG;communication contention;parallel algorithm
摘要：
Task scheduling is an essential aspect of parallel process system. This NP-hard problem assumes fully connected homogeneous processors and ignores contention on the communication links. However, as arbitrary processor network (APN), communication contention has a strong influence on the execution time of a parallel application. This paper investigates the incorporation of contention awareness into task scheduling. The innovation is the idea of dynamically scheduling edges to links, for which we use the earliest finish communication time search algorithm based on shortest-path search method. The other novel idea proposed in this paper is scheduling priority based on recursive rank computation on heterogeneous arbitrary processor network. In the end, to reduce time complexity of algorithm, a parallel algorithm is proposed and speedup O(PPE) is achieved. The comparison study, based on both randomly generated graphs and the graphs of some real applications, shows that our scheduling algorithm significantly surpasses classic and static communication contention awareness algorithm, especially for high data transmission rate parallel application.
关键词：
Periodic and subharmonic solutions;2 n th-order;n;Functional difference equations;Discrete variational theory;p -Laplacian;p
摘要：
By using the critical point theory, some new criteria are obtained for the existence and multiplicity of periodic and subharmonic solutions to a 2nth-order nonlinear difference equation containing both advance and retardation involving p-Laplacian. The proof is based on the Linking Theorem in combination with variational technique. Our results generalize and improve the results in the literature. (C) 2013 Royal Dutch Mathematical Society (KWG). Published by Elsevier B.V. All rights reserved.
期刊：
Journal of Materials Chemistry A,2015年3(16):8475-8482 ISSN：2050-7488
通讯作者：
Zhou, Shungui
作者机构：
[Tang, Jiahuan; Liu, Ting; Zhou, Shungui; Yuan, Yong; Fu, Peng] Guangdong Key Laboratory of Agricultural Environment Pollution Integrated Control, Guangdong Institute of Eco-Environmental and Soil Sciences, Guangzhou, China;[Fu, Peng] School of Chemical Engineering and Light Industry, Guangdong University of Technology, Guangzhou, China;[Liu, Ting] Orient Science and Technology College, Hunan Agricultural University, Changsha, China
作者机构：
[Tiejun Zhou; Min Long] College of Science, Hunan Agricultural University, Changsha, Hunan 410128, China;[Tiejun Zhou; Min Wang] College of Orient Science and Technology, Hunan Agricultural University, Changsha, Hunan 410128, China
作者机构：
[Liao, Luyan] Orient Science and Technology College of Hunan Agricultural University, Changsha, China;[Wu, Weiguo; Liao, Luyan] Food Science and Technology College of Hunan Agricultural University, Changsha, China
摘要：
There is increasing evidence for considerable interlinking between the responses to heat stress (HS) and light signaling. In the present work, we provide molecular evidence that BBX18, a negative regulator in photomorphogenesis belonging to the B-box zinc finger protein family in Arabidopsis thaliana, is involved in the regulation of thermotolerance. Using quantitative RT-PCR, GUS staining and immunoblot analysis, our results indicate that the expression of BBX18 was induced by HS. BBX18-RNAi and 35S::BBX18 transgenic Arabidopsis plants were obtained for functional analysis of BBX18. Under-expression of BBX18 displayed increased both basal and acquired thermotolerance in the transgenic plants, while over-expression of BBX18 reduced tolerance to HS in transgenic lines. Moreover, when wild-type, BBX18-RNAi and 35S::BBX18 transgenic plants were treated with HS, HR-related digalactosyldiacylglycerol synthase 1 (DGD1) was down-regulated by BBX18 in both normal and heat shock conditions. Besides, the expression levels of Hsp70, Hsp101 and APX2 were increased in BBX18-RNAi transgenic plants, but lower in 35S::BBX18 transgenic plants. However, the expression of HsfA2 was lower in BBX18-RNAi transgenic plants and higher in the 35S::BBX18 after high-temperature treatment. These results suggesting that, by modulated expression of a set of HS-responsive genes, BBX18 weakened tolerance to HS in Arabidopsis. So our data indicate that BBX18 plays a negative role in thermotolerance.
作者机构：
[Li, Shun-Ji; Huang, Guo-Hua; Hu, Jue; Zhou, Gui-Wei; Zhu, Jie] Institute of Virology, Hunan Agricultural University, Changsha, Hunan, China;[Zhao, Yi-Pei; Wang, Xing] Department of Plant Protection, Oriental Science & Technology College of Hunan Agricultural University, Changsha, Hunan, China;[Zhou, Zhong-Shi] Institute of Plant Protection, Chinese Academy of Agricultural Sciences, Beijing, Beijing, China
摘要：
Ascoviruses are double-stranded DNA viruses that are pathogenic to lepidopteran hosts, particularly noctuid larvae. Infection of a larva is characterized by retarded growth, reduced feeding and yellowish body color. In this paper, we reported the growth and development of three major agricultural noctuid insect pests, Helicoverpa armigera (Hubner), Spodoptera exigua (Hubner) and Spodoptera litura (Fabricius), infected with Heliothis virescens ascovirus 3h (HvAV-3h). Using 10-fold serial dilutions (0 to 7) of HvAV-3h-containing hemolymph to infect S. litura larvae, we found no significant difference in larval mortalities from 0 to 10(3)-fold dilutions; however, significant differences were observed at 10(4)-fold dilution and above. Using a 10-fold dilution of HvAV-3h-containing hemolymph to infect H. armigera, S. exigua and S. litura larvae, we found that the growth and development were significantly affected. All infected larvae could not pupate; the survival times of treated H. armigera, S. litura and S. exigua larvae were significantly longer than untreated control larvae. Body weight showed significant difference between treated and untreated control group from day 1 after inoculation in H. armigera and S. exigua, but day 2 in S. litura. Additionally, food intake also showed significant difference between treated and untreated control group from day 2 after inoculation in H. armigera and S. litura, but day 3 in S. exigua.
期刊：
Applied Mathematics and Computation,2014年236:613-620 ISSN：0096-3003
通讯作者：
Shi, H.(shp7971@163.com)
作者机构：
[Deng, Xiaoqing] School of Mathematics and Statistics, Hunan University of Commerce, Changsha 410205, China;[Zhang, Yuanbiao] Packaging Engineering Institute, Jinan University, Zhuhai 519070, China;[Shi, Haiping] Modern Business and Management Department, Guangdong Construction Vocational Technology Institute, Guangzhou 510450, China;[Liu, Xia] Oriental Science and Technology College, Hunan Agricultural University, Changsha 410128, China;[Liu, Xia] Science College, Hunan Agricultural University, Changsha 410128, China
通讯机构：
[Shi, Haiping] Guangdong Construct Vocat Technol Inst, Modern Business & Management Dept, Guangzhou 510450, Guangdong, Peoples R China.
关键词：
Periodic and subharmonic solutions;Fourth-order;Nonlinear difference equations;Discrete variational theory
作者机构：
[Liu, Yang; 吴卫国; 傅亚平] College of Food Science and Technology, Hunan Agricultural University, Changsha, China;[刘阳] Orient Science and Technology College of Hunan Agricultural University, Changsha, China
期刊：
International journal of systematic and evolutionary microbiology,2014年64(Pt 11):3891-3896 ISSN：1466-5026
通讯作者：
Yang, Guiqin;Zhao, Yong
作者机构：
[Lu, Qin; Zhou, Shungui] Guangdong Institute of Eco-Environmental and Soil Sciences, Guangzhou 510650, PR China;[Li, Jibing] College of Food Science and Technology, Shanghai Ocean University, Shanghai 201306, PR China Guangdong Institute of Eco-Environmental and Soil Sciences, Guangzhou 510650, PR China;[Yang, Guiqin] Guangdong Institute of Eco-Environmental and Soil Sciences, Guangzhou 510650, PR China ygqhappy@163.com yzhao@shou.edu.cn;[Zhao, Yong] College of Food Science and Technology, Shanghai Ocean University, Shanghai 201306, PR China ygqhappy@163.com yzhao@shou.edu.cn;[Liu, Ting] College of Orient Science and Technology, Hunan Agricultural University, Changsha 410128, PR China
摘要：
A Gram-reaction-variable, rod-shaped, motile, facultatively aerobic and endospore-forming bacterium, designated strain GSS02(T), was isolated from a forest soil. Strain GSS02(T) was capable of reducing humic substances and Fe(III) oxides. Strain GSS02(T) grew optimally at 35 degrees C, at pH 78 and in the presence of 1% NaCl. The predominant menaquinone was MK-7. The major cellular fatty acids were anteiso-C(15:0) and iso-C(16:0) and the polar lipid profile contained mainly phosphatidylethanolamine, diphosphatidylglycerol and phosphatidylglycerol, with moderate amounts of two unknown aminophospholipids and a minor amount of one unknown lipid. The DNA G+C content was 53.4 mol%. Comparative 16S rRNA gene sequence analysis showed that strain GSS02(T) was related most closely to Paenibacillus terrigena JCM 21741(T) (98.1% similarity). Mean DNA-DNA relatedness between strain GSS02(T) and P. terrigena JCM 21741(T) was 58.8 +/- 0.5%. The phylogenetic, chemotaxonomic and phenotypic results clearly demonstrated that strain GSS02(T) belongs to the genus Paenibacillus and represents a novel species, for which the name Paenibacillus guangzhouensis sp. nov. is proposed. The type strain is GSS02(T) ( =KCTC 33171(T) =CCTCC AB 2013236(T)).
作者机构：
[Zhou, Bin; Pang, Ran; Chen, Puyan; Cao, Ruibing; Lian, Xue; Huang, Li; He, Danni; Liu, Ke; Feng, Xiuli] Nanjing Agr Univ, Dept Vet Med Coll, Key Lab Anim Dis Diagnost & Immunol, Nanjing 210095, Jiangsu, Peoples R China.;[Chen, Puyan] Nanjing Agr Univ, Dept Vet Med Coll, Key Lab Anim Dis Diagnost & Immunol, YiFu 4037, Nanjing 210095, Jiangsu, Peoples R China.;[Miao, Denian] Shanghai Acad Agr Sci, Shanghai, Peoples R China.;[Luo, Chao] Hunan Agr Univ, Dept Orient Sci & Technol Coll, Changsha, Hunan, Peoples R China.;[Ma, Zhiyong] Chinese Acad Agr Sci, Shanghai Vet Res Inst, Shanghai 200241, Peoples R China.
通讯机构：
[Chen, Puyan] Nanjing Agr Univ, Dept Vet Med Coll, Key Lab Anim Dis Diagnost & Immunol, YiFu 4037, Nanjing 210095, Jiangsu, Peoples R China.
关键词：
Porcine reproductive and respiratory syndrome virus;Phage display;Antiviral peptide
摘要：
Porcine reproductive and respiratory syndrome is an important infectious disease of pigs and has a significant harmful effect on the livestock industry, especially in China. PRRSV ORF1b gene encodes primary proteins which play a vital role during PRRSV replication. In this paper, various 12-amino-acid peptides were displayed. These peptides could bind to the polymerase and helicase of PRRSV ORF1b protein, respectively, in which p9 exerted the highest antiviral activity with an IC50 of 56 mu M, and the minimum toxicity to cells. It was proved that p9 inhibited PRRSV replication in infected MARC-145 cells in a dose-dependent manner, and the amino acid sequence of HRILMRIR was important for antiviral activity of p9. Also, p9 could bind to the cell membrane and penetrated into cells. These result suggested that p9 might be a potential therapeutic drug for PRRSV infection. Crown Copyright (C) 2012 Published by Elsevier Inc. All rights reserved.
关键词：
Existence;Periodic solutions;Nonlinear;Difference equations;Discrete variational theory
摘要：
By making use of the critical point theory, the existence of periodic solutions for a class of nonlinear difference equations is obtained. The proof is based on the saddle point theorem in combination with variational technique. The problem is to solve the existence of periodic solutions of a class of nonlinear difference equations. Results obtained complement the existing one.
关键词：
Homoclinic orbits;Nonlinear difference equations;Jacobi operators;Advance and retardation;Discrete variational theory
摘要：
By using the critical point theory, the existence of a nontrivial homoclinic orbit which decays exponentially at infinity for difference equations containing both advance and retardation is obtained. The proof is based on the Mountain Pass Lemma in combination with periodic approximations. Our results obtained successfully extend and complement the results in the literature. (C) 2014 Royal Dutch Mathematical Society (KWG). Published by Elsevier B.V. All rights reserved.
