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Search Results: 1 - 10 of 16178 matches for " Rui Hou "
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Integrating LCA and LCC Study of FGD System at a Thermal Power Plant in China
Rui Xu,Fengsheng Hou
Journal of Software , 2010, DOI: 10.4304/jsw.5.12.1425-1433
Abstract: This paper presents the integrating Life Cycle Assessment (LCA) and Life Cycle Costing (LCC) study of the Flue Gas Desulphurization (FGD) system in Fengcheng thermal power plant in China. The FGD systems have been installed in a power generation plant to reduce the large amount of SO2 emission. Studies to appraise FGD system in power plant have mainly focused on economic analysis. This paper gives a way of combing LCA and LCC analysis, which can be used to evaluate ecological and economic benefits both before and after the installation of the FGD system. The focus of this study is to consider not only the LCA outcome but also the LCC factors. LCA provides a broad view by generating a model which links the industry to be assessed through all its material and energy resource flows to other environmentally significant processes in the wider industrial network. The Life Cycle Costing was used to provide a comparison between alternative before and after installation of the FGD system. LCC, as a powerful analytical tool, examines the total cost, in net present value terms, of a FGD system over its entire service lifetime. Comparative models of the power plant, before and after the installation of the FGD system, are evaluated using the LCA model. The results indicate that the installation of the FGD system can reduce the acidification problem associated with combustible fossil fuel plants by approximately 97%. The LCC estimation shows the major costs of the FGD system: capital investment, operating and maintenance, and miscellaneous costs. The modeling and model analysis of LCA and LCC for FGD system provide the foundation for assessing the selection of desulphurization technology for large thermal power plant in China; it is also helpful to optimize construction, operation and maintenance of FGD installation.
Host-Microbe Interactions in Caenorhabditis elegans
Rui Zhang,Aixin Hou
ISRN Microbiology , 2013, DOI: 10.1155/2013/356451
Abstract: A good understanding of how microbes interact with hosts has a direct bearing on our capability of fighting infectious microbial pathogens and making good use of beneficial ones. Among the model organisms used to study reciprocal actions among microbes and hosts, C. elegans may be the most advantageous in the context of its unique attributes such as the short life cycle, easiness of laboratory maintenance, and the availability of different genetic mutants. This review summarizes the recent advances in understanding host-microbe interactions in C. elegans. Although these investigations have greatly enhanced our understanding of C. elegans-microbe relationships, all but one of them involve only one or few microbial species. We argue here that more research is needed for exploring the evolution and establishment of a complex microbial community in the worm’s intestine and its interaction with the host. 1. Introduction Host-microbe symbiosis exists in almost all animals, and the symbiotic bacteria can be profitable, harmful, or of no effect to the host. For example, the harmless Escherichia coli strains commonly found in organismal intestine are a normal part of the gut flora and can advantage their hosts by producing vitamin K [1] and by keeping pathogenic bacteria from colonizing the intestine [2, 3]. By contrast, some others like E. coli strain O26 can cause diseases in its hosts [4]. The interactions between host and microbe form complicated networks. Understanding these interactions can help us effectively cure the diseases caused by pathogenic microbes and promote good health in animals by benign microbes. A number of model organisms, for example, C. elegans, Saccharomyces cerevisiae, Drosophila melanogaster, Arabidopsis, zebrafish, and mice, have been used to study the mechanisms involved in host-microbe interactions. Among these organisms, C. elegans has its unique characteristics that can be regarded as its advantages being a model animal. The nematode C. elegans is a free living, multicellular invertebrate. Its two original strains were isolated from soil in France [5] and mushroom compost in England [6] more than a half-century ago. Naturally C. elegans lives on microbes including bacteria and fungi, and it is also a natural host of some pathogenic microorganisms such as the Gram-negative bacterium Microbacterium nematophilum, the fungus Drechmeria coniospora, the microsporidian parasite Nematocida parisii, and the Orsay virus [7, 8]. Major attributes of C. elegans as a model include its tractability to be easily maintained in the laboratory, the
Fluid Flow and Heat Transfer Charateristics in a 180-deg Round Turned Channel with a Perforated Divider  [PDF]
Rui Xu, Rui Xu, Jinliang Hou, Li Wang, Yanfei Yu, Jiaxing Wei, Changfeng Li
Journal of Applied Mathematics and Physics (JAMP) , 2014, DOI: 10.4236/jamp.2014.26049
Abstract:

This study provided a new configuration of the 180-deg round turned channel with a perforated divider, as well as numerically investigated the effect of perforations, including the diameter of perforation and the angel of perforation, on the fluid flow and heat transfer. The numerical results appeared in good agreement with previous experimental data under the same operating conditions. The results indicated that large size and positive angle of perforation changed the fluid flow pattern and the local Nusselt-number distribution fundamentally. It is noteworthy that a more uniform distribution of Nusselt-number was achieved by increasing the diameter of perforation.

Efficient Constellation Design Based on Improved Non-dominated Sorting Genetic Algorithm-II
Tengyue Mao,Zhengquan Xu,Rui Hou
Journal of Computers , 2012, DOI: 10.4304/jcp.7.6.1337-1344
Abstract: Constellation design is a typical multiple peaks, multiple valleys and non-linear multi-objective optimization problem. How to design satellite constellation is one of the key sectors of research in the aerospace field. In this paper, in order to improve the global convergence and diversity performance of traditional constellation optimization algorithm, multi-parent arithmetic crossover and SBX crossover operator of NSGA-II are used to improve searching capability of this algorithm. Meanwhile, Gaussian mutation and Cauchy mutation, with diversity of population, make the algorithm get better behaviors in convergence and diversity of finding solutions. Based on the methods, an improvement NSGA-II is presented to design constellation in the paper. The algorithm uses fixed length chromosome representation. Real coding is adopted for that the problem has both integer continuous variables. Combining the coverage assessment criterions, an orbit parameters optimization framework based on non-dominated sorting genetic algorithm (NSGA-II) was proposed. This method is applied to a detailed example, and result shows that a group of Pareto solutions with good spread can be achieved, which gives strong support to constellation scheme determination.
End-Regularity of the Join of n Split Graphs
Hailong Hou,Aifen Feng,Rui Gu
Research Journal of Applied Sciences, Engineering and Technology , 2013,
Abstract: A graph X is said to be End-regular if its endomorphism monoid End (X) is a regular semigroup. In this study, End-regular graphs which are the join of n split graphs are characterized. We give the conditions under which the endomorphism monoid of the join of n splits graphs is regular.
Impact of the next-generation sequencing data depth on various biological result inferences
Rui Hou,ZhenXing Yang,MingHui Li,HuaSheng Xiao
Science China Life Sciences , 2013, DOI: 10.1007/s11427-013-4441-0
Abstract: Next-generation sequencing (NGS) technologies have revolutionized the field of genomics and provided unprecedented opportunities for high-throughput analysis at the levels of genomics, transcriptomics and epigenetics. However, the cost of NGS is still prohibitive for many laboratories. It is imperative to address the trade-off between the sequencing depth and cost. In this review, we will discuss the effects of sequencing depth on the detection of genes, quantification of gene expression and discovering of gene structural variants. This will provide readers information on choosing appropriate sequencing depth that best meet the needs of their particular project.
Phase-Locked Fibre Array for Coherent Combination and Atmosphere Aberration Compensation
HOU Jing,XIAO Rui,
侯静
,肖瑞

中国物理快报 , 2006,
Abstract: We report a fibre amplifier array that not only achieves coherent beam combination by compensation of phase noises of fibre amplifier, but also accomplishes correction of atmosphere aberration. It is of master-oscillator--multiple-amplifier (MOPA) configuration, which can be phase-locked by the multidither principle or heterodyne detection principle. First laboratory experiments of atmosphere aberration compensation of a three-element fibre amplifier array are reported. The atmosphere aberration is created by a phase screen in the experiment. The phase changes of the beam, which are introduced by the fibre amplifier and the phase screen, are both detected by the heterodyne detection method. Phase modulators are controlled to compensate for the phase in the three paths. No matter whether there is a phase screen producing atmosphere aberration or not, the dim dynamic interference fringes in the far field turn to a clear and stable pattern, and the peak intensity is maximized. It is indicated that the fibre amplifier array is phase-locked, and coherent combination of the three beams is achieved. It can be used not only to obtain high power fibre laser array but also in laser space communication.
2-[4,5-Bis(butylsulfanyl)-1,3-dithiol-2-ylidene]-5-methyl-5H-1,3-dithiolo[4,5-c]pyrrole-4-carbaldehyde
Rui-Bin Hou,Bing-Zhu Yin
Acta Crystallographica Section E , 2010, DOI: 10.1107/s160053681004910x
Abstract: In the title compound, C18H23NOS6, the dithiolopyrrole ring is almost planar [r.m.s. deviation = 0.044 (3) ] and makes a dihedral angle of 25.11 (7)° with the dithiole ring. In the crystal, pairs of neighboring molecules are connected by weak intermolecular C—H...O interactions. These dimers are further linked into a chain along [110] by C—H...O interactions.
Influence of space charged particles on satellite optical communication system
Rui Hou,Shanghong Zhao,Jie Xu,Jili Wu
Optica Applicata , 2009,
Abstract: Although research of satellite optical communication system has been carried out for many years, there is scarce literature to comprehensively analyze the influence of space environment on satellite optical communication system. Different kinds of particles and fields exist in the space environment, including high energy charged particles, solar radiation, plasma environment, space fragment, etc. The Influence of space charged particles on satellite optical communication system was investigated in detail, which mainly related to single event upset (SEU), total dose effect and plasma environment. For SEU analysis the relation between single proton upset rate and satellite orbit was analyzed in detail. The reliability index of equipment based on SEU was proposed, the numerical calculation results have proved that the SEU effect was relatively less and corresponded to higher reliability of SRAM/MOS equipment under lower orbit altitude and inclination. For plasma environment analysis there is no obvious influence of plasma on laser signal transmission. But charging and discharging processes on satellite surface would lead to the malfunction of satellite communication system. The influence of charged particles and its related plasma on satellite optical communication system was investigated, which would be helpful for the design and the improvement of performance of satellite optical communication system.
2,3-Bis(ethylsulfanyl)-1,4,5,8-tetrathiafulvalene-6,7-dicarbonitrile
Rui-bin Hou,Dong-feng Li
Acta Crystallographica Section E , 2011, DOI: 10.1107/s1600536811028601
Abstract: In the title compound, C12H10N2S6, all non-H atoms, except for those in the ethyl groups, lie in the same non-crystallographic plane, with a r.m.s. deviation of 0.0366 (5) . In the crystal structure, molecules are linked through weak C—H...N hydrogen bonds between methyl and cyano groups, forming centrosymmetric dimers. The dimers are arranged along the a axis, due to intermolecular N...S [3.337 (4) ] interactions.
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