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  • Trans Tech Publications, Ltd.  (729)
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  • Trans Tech Publications, Ltd.  (729)
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  • 1
    Online Resource
    Online Resource
    Heterogeneity Influence of Organic Matter on the Ozonation Chemiluminescence for Soils and Sediments
    Trans Tech Publications, Ltd. ; 2012
    In:  Advanced Materials Research Vol. 468-471 ( 2012-2), p. 1850-1855
    Details
    In: Advanced Materials Research, Trans Tech Publications, Ltd., Vol. 468-471 ( 2012-2), p. 1850-1855
    Abstract: Organic matter in soils and sediments is the key object of biogeochemistry in both terrestrial and marine ecosystems. Whether organic matter is the source or sink of carbon and nutrients can be predicted by its compositions and need continuous, long-term observations of organic matter compositions; therefore, in situ technologies are being investigated to meet the continuous, long-term observations. This study tried to explore a rapid determination of organic matter compositions by ozone chemiluminescence. After the soils or sediments were oxidized by ozone, their chemiluminescence characteristics such as luminescence maximum and time differed significantly. We hypothesized that the luminescence characteristics is controlled by the organic matter compositions. The soils and sediments were separated into extractives, acid soluble fractions (AS), and acid insoluble fractions (AIF), and then the original samples and their compositions were oxidized by ozone. Different organic matter compositions play a different role in the luminescence characteristics: extractives inhibited the luminescence maximum and luminescence time, AS increased the luminescence time and AIF increased the luminescence maximum. Results also showed that AIF can explain most variation of luminescence characteristics, suggesting that the luminescence characteristics are mainly controlled by the concentrations of AIF. Our study suggested that ozonaiton chemiluminescence have a strong potential to rapidly determine the chemistry of soils and sediments.
    Type of Medium: Online Resource
    ISSN: 1662-8985
    URL: Issue
    URL: Article
    DOI: 10.4028/www.scientific.net/AMR.468-471
    DOI: 10.4028/www.scientific.net/AMR.468-471.1850
    Language: Unknown
    Publisher: Trans Tech Publications, Ltd.
    Publication Date: 2012
    detail.hit.zdb_id: 2265002-7
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  • 2
    Online Resource
    Online Resource
    Pressure Drop of Y-Shaped Branch Pipe in Gas-Solids Flow
    Trans Tech Publications, Ltd. ; 2011
    In:  Advanced Materials Research Vol. 201-203 ( 2011-2), p. 2246-2249
    Details
    In: Advanced Materials Research, Trans Tech Publications, Ltd., Vol. 201-203 ( 2011-2), p. 2246-2249
    Abstract: This work concentrated on being able to predict the resistance properties of Y-shaped branch pipe in gas-solid two phase flow. Y-shaped branch pipeline with one branch angle keeping constant and the other being changeable experimental system was built up. Micro-glass bead and millet with similar particle diameter and different solid density were conveyed in the experimental system. As a result, trends of pressure drop on each branch pipe were expressed to perform resistance properties. It can be concluded that pressure drop of the two materials had similar trend and was significantly affected by the branch angle and gas velocity. Meanwhile, the deposition velocity was defined in this study. The relationship between the solids loading ratio and pressure drop on each branch pipe was given based on experimental data, which agreed the theoretical analysis well.
    Type of Medium: Online Resource
    ISSN: 1662-8985
    URL: Issue
    URL: Article
    DOI: 10.4028/www.scientific.net/AMR.201-203
    DOI: 10.4028/www.scientific.net/AMR.201-203.2246
    Language: Unknown
    Publisher: Trans Tech Publications, Ltd.
    Publication Date: 2011
    detail.hit.zdb_id: 2265002-7
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  • 3
    Online Resource
    Online Resource
    Grain Emergency Transport Model on Unascertained Number
    Trans Tech Publications, Ltd. ; 2010
    In:  Applied Mechanics and Materials Vol. 20-23 ( 2010-1), p. 328-330
    Details
    In: Applied Mechanics and Materials, Trans Tech Publications, Ltd., Vol. 20-23 ( 2010-1), p. 328-330
    Abstract: The question to choose a grain supplement emergency path is uncertain. By using uncertain methods, integration of experts can be done. Base on the uncertain theory, we build the model of choosing a path with minimum risk in the process of grain emergency transportation and the algorithm. Firstly, estimate every path in the net to get the unascertained numbers of experts. Then, the unascertained number of experts with the uncertain operate rule is computed. Thirdly, the expectation and reliability of its unascertained number can be gotten. At last, get the minimum risk path by operate the expectation and the experiential value. This model has certain rationality and validity by data test.
    Type of Medium: Online Resource
    ISSN: 1662-7482
    URL: Issue
    URL: Article
    DOI: 10.4028/www.scientific.net/AMM.20-23
    DOI: 10.4028/www.scientific.net/AMM.20-23.328
    Language: Unknown
    Publisher: Trans Tech Publications, Ltd.
    Publication Date: 2010
    detail.hit.zdb_id: 2251882-4
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  • 4
    Online Resource
    Online Resource
    2D Finite Element Analysis of a Excavation Supporting Types in Changchun City
    Trans Tech Publications, Ltd. ; 2014
    In:  Applied Mechanics and Materials Vol. 536-537 ( 2014-4), p. 1589-1593
    Details
    In: Applied Mechanics and Materials, Trans Tech Publications, Ltd., Vol. 536-537 ( 2014-4), p. 1589-1593
    Abstract: In this paper, By using a large common ABAQUS finite element software to simulate a hospital,s deep foundation pit excavation process in Changchun, Contrasting respectively pile-anchor retaining structure which had been adopted in the project with pile-strut bracing structure. Obtaining stress and deformation of soil and the stress and deformation of pile under the two supporting types, Analysis of the two supporting types feature only from the perspective of the force and deformation in foundation soil and piles, To provide a reference for future support in deep foundation excavation work.
    Type of Medium: Online Resource
    ISSN: 1662-7482
    URL: Issue
    URL: Article
    DOI: 10.4028/www.scientific.net/AMM.536-537
    DOI: 10.4028/www.scientific.net/AMM.536-537.1589
    Language: Unknown
    Publisher: Trans Tech Publications, Ltd.
    Publication Date: 2014
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  • 5
    Online Resource
    Online Resource
    Study on Synthesis of Cationic Water in Water Polyacrylamide Emulsion Strength Agent
    Trans Tech Publications, Ltd. ; 2012
    In:  Advanced Materials Research Vol. 581-582 ( 2012-10), p. 164-167
    Details
    In: Advanced Materials Research, Trans Tech Publications, Ltd., Vol. 581-582 ( 2012-10), p. 164-167
    Abstract: Emulsion copolymerization of acrylamide (AM) and cationic monomer DMC (methyl acrylacyl oxyethyl trimethyl ammonium chloride) was studied. A series of cationic polyacrylamide (CPAM) emulsion were synthesized using Water in water emulsion polymerization. Influence of polymerization conditions such as cationic monomer (DMC) ratio, reaction time, the initiator dosage on synthetic product strengthening effect to paper pulp was studied. It was showed that the CPAM emulsion optimal synthetic conditions was that AM monomer second adding amount was 60% AM total amount, ammonium persulfate initiator and sodium hydrogen sulfite initiator dosage was 0.138g and 0.03g respectively, mass ratio of DMC and AM was 15:85, reaction time was 7 hours. When the dosage of CPAM emulsion was 1.0% to absolute dry bleached wheat straw pulp, distinct strengthening effect was acquired, tensile index and tearing index of handsheet was increased by 27.2% and 26.8% respectively.
    Type of Medium: Online Resource
    ISSN: 1662-8985
    URL: Issue
    URL: Article
    DOI: 10.4028/www.scientific.net/AMR.581-582
    DOI: 10.4028/www.scientific.net/AMR.581-582.164
    Language: Unknown
    Publisher: Trans Tech Publications, Ltd.
    Publication Date: 2012
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  • 6
    Online Resource
    Online Resource
    Preparation and Properties of Nanocomposites Consist of Carbon Black N220 and Epoxy Resin
    Trans Tech Publications, Ltd. ; 2011
    In:  Advanced Materials Research Vol. 308-310 ( 2011-8), p. 820-823
    Details
    In: Advanced Materials Research, Trans Tech Publications, Ltd., Vol. 308-310 ( 2011-8), p. 820-823
    Abstract: The nanometer carbon black (CB) N220 of different content was employed to prepare carbon black N220/epoxy resin (CB N220/EP) composites by filling-mixing method. The structure of CB N220 and its dispersion in epoxy resin were analyzed by TEM and tensile fracture surface of the composites was analyzed by SEM. Experimental results showed that CB N220 was dispersed in epoxy resin homogenously in the form of CB particles and it formed a good interface with epoxy resin in the presence of coupling agent (KH-550). Using of CB N220 enhanced the mechanical and thermal properties of the composites, for tensile strength, elongation at break, impact strength and flexural strength of the composites filled with 2 wt% CB N220 reached a maximum values( 82Mpa、3％、20 KJ•m-2、107Mpa), a rise of 32.3％、39.6％、88.7％、10.3％, respectively, compared to pristine epoxy resin.
    Type of Medium: Online Resource
    ISSN: 1662-8985
    URL: Issue
    URL: Article
    DOI: 10.4028/www.scientific.net/AMR.308-310
    DOI: 10.4028/www.scientific.net/AMR.308-310.820
    Language: Unknown
    Publisher: Trans Tech Publications, Ltd.
    Publication Date: 2011
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  • 7
    Online Resource
    Online Resource
    Experimental Study on Capability of EPS Beads-Mixed Lightweight Soil
    Trans Tech Publications, Ltd. ; 2012
    In:  Applied Mechanics and Materials Vol. 268-270 ( 2012-12), p. 776-781
    Details
    In: Applied Mechanics and Materials, Trans Tech Publications, Ltd., Vol. 268-270 ( 2012-12), p. 776-781
    Abstract: At present, system research on performance of the physics, deformation, strength and other properties of light mixed soil already exists in China, but the study on permeability is just in the initial stage and the system study on permeability of EPS beads-mixed lightweight soil is lack of, therefore, it is necessary to study the permeability of EPS beads-mixed lightweight soil. This article draw some reliable conclusions which include the permeability of EPS beads-mixed lightweight soil decreases with the increasing of curing age and cement ratio, and decreasing of EPS beads ratio and particle size and the cement ratio has quadratic polynomial function relationship when EPS beads ratio has linear relationship, by analyzing the effects of curing age, cement ratio, EPS beads ratio and particle size. The paper proposes multiple linear regression equation, considering the relationship of lightweight soil permeability between EPS particles and cement ratio. These will do good to the application of the practice engineering.
    Type of Medium: Online Resource
    ISSN: 1662-7482
    URL: Issue
    URL: Article
    DOI: 10.4028/www.scientific.net/AMM.268-270
    DOI: 10.4028/www.scientific.net/AMM.268-270.776
    Language: Unknown
    Publisher: Trans Tech Publications, Ltd.
    Publication Date: 2012
    detail.hit.zdb_id: 2251882-4
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  • 8
    Online Resource
    Online Resource
    High-Performance Silica/Epoxy Resin Hybrid Materials Prepared by 〈i〉In Situ〈/i〉 Sol-Gel Process
    Trans Tech Publications, Ltd. ; 2011
    In:  Advanced Materials Research Vol. 308-310 ( 2011-8), p. 804-807
    Details
    In: Advanced Materials Research, Trans Tech Publications, Ltd., Vol. 308-310 ( 2011-8), p. 804-807
    Abstract: Silica/epoxy resin hybrid materials are prepared with tetraethylorthosilicate (Si(OC 2 H 5 ) 4 , TEOS) and γ-aminoproplytriethyoxysiliane (H 2 N(CH 2 ) 3 Si(OC 2 H 5 ) 3 , APTES) as the silica sources, epoxy resin as the polymer matrix, by the means of in-suit sol-gel method. The dosages of TEOS and APTES in preparation of hybrid materials, and the sol-gel temperature for silica resources are discussed to make sure of the influence of the structure and properties on hybrid materials. The dispersion of Silica in the epoxy resin are examined by transmission electron microscopy (TEM).The image of fracture surfaces of hybrid materials are examined by scanning electron microscopy (SEM). The glass transmission temperatures (Tg) are tested by differential scanning calorimeter (DSC) to characterize the heat resistance of hybrid materials. The optimum mechanical performance and heat resistance for silica/epoxy resin hybrid materials are achieved with 3wt% TEOS and APTES 2wt% employed in this materials when sol-gel temperature is 60°C. In general, the mechanical and thermal properties of the hybrid materials were improved greatly as compared with the pure epoxy resin.
    Type of Medium: Online Resource
    ISSN: 1662-8985
    URL: Issue
    URL: Article
    DOI: 10.4028/www.scientific.net/AMR.308-310
    DOI: 10.4028/www.scientific.net/AMR.308-310.804
    Language: Unknown
    Publisher: Trans Tech Publications, Ltd.
    Publication Date: 2011
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  • 9
    Online Resource
    Online Resource
    The Development Process and Prospects of Mine Surveying in China
    Trans Tech Publications, Ltd. ; 2011
    In:  Applied Mechanics and Materials Vol. 71-78 ( 2011-7), p. 1311-1317
    Details
    In: Applied Mechanics and Materials, Trans Tech Publications, Ltd., Vol. 71-78 ( 2011-7), p. 1311-1317
    Abstract: Mine surveying is an important part and infrastructure protection of mine production and mine construction, and it is also very important basic work of coal mine safety production. This article summarized the development process of China's mine surveying for 60 years, the development process of China's mine surveying was from Transit Times which angling and distancing separately to Electronic Total Time which angling and distancing combo. Today, China's mine surveying has developed into an information science which combines with measurement and optoelectronic technology, computer technology, global positioning system (GPS), geographical information system (GIS) , remote sensing (RS) , D-InSAR and Unmanned Aerial Vehicle Remote Sensing with the rapid development of science and technology. This paper also analyzed the development status, opportunities and challenges-digital of China's mine surveying , and pointed out its development direction and what measures should be taken.
    Type of Medium: Online Resource
    ISSN: 1662-7482
    URL: Issue
    URL: Article
    DOI: 10.4028/www.scientific.net/AMM.71-78
    DOI: 10.4028/www.scientific.net/AMM.71-78.1311
    Language: Unknown
    Publisher: Trans Tech Publications, Ltd.
    Publication Date: 2011
    detail.hit.zdb_id: 2251882-4
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  • 10
    Online Resource
    Online Resource
    Prediction of Genes Regulated by JAK-STAT Signal Pathway
    Trans Tech Publications, Ltd. ; 2013
    In:  Advanced Materials Research Vol. 796 ( 2013-9), p. 25-35
    Details
    In: Advanced Materials Research, Trans Tech Publications, Ltd., Vol. 796 ( 2013-9), p. 25-35
    Abstract: JAK-STAT signaling pathway shared by a variety of cytokines was discovered in recent years. It plays an important role in growth and development, cell apoptosis and immune response. In general, activated STAT dimer binds to a palindromic sequence (TTCN2-4GAA) located at the upstream promoter region to activate gene transcription. Some signal pathways including Toll and Imd in silkworm Bombyx mori , a model of Lepidopteran insect, have been well studied. However, little is known regarding JAK-STAT signal pathway. In the present study, the genes regulated by JAK-STAT signal pathway were predicted by bioinformatics analysis. 1000bp of upstream promoter sequence of the all predicted genes were downloaded from the silkworm genome database, and the STAT binding sequence TTCN2-4GAA were searched by scanning the promoter sequences, the results showed that 1 to 6 the target sequences could be found in the upstream promoter sequences of 9293 genes coding7271 non-redundant proteins. Go annotation results showed that these proteins were involved to cellular component, molecular function and biological process, suggesting JAK-STAT pathway play an important role in many way. More than 50% genes related to binding, about 40% genes related to cellular process, metabolic process and catalytic activity in the targeting genes. It is considered that JAK-STAT play a role in immune response.1-4 STAT binding sequences could be detected in promoter region of some genes related to anti-viral factors, cellular immune effector, and small antimicrobial peptide including defensin, attacin, moricin and gloverin3, implying that the expression of some anti-viral factors, cellular immune effectors and antimicrobial peptides related to antiviral activity might be regulated by JAK-STAT signal pathway.
    Type of Medium: Online Resource
    ISSN: 1662-8985
    URL: Issue
    URL: Article
    DOI: 10.4028/www.scientific.net/AMR.796
    DOI: 10.4028/www.scientific.net/AMR.796.25
    Language: Unknown
    Publisher: Trans Tech Publications, Ltd.
    Publication Date: 2013
    detail.hit.zdb_id: 2265002-7
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