A series of Co-Sn alloys with Sn content ranging from 12% to 32%（mole fraction） were undercooled to different degrees below the equilibrium liquidus temperature and the solidification behaviors were investigated by ...A series of Co-Sn alloys with Sn content ranging from 12% to 32%（mole fraction） were undercooled to different degrees below the equilibrium liquidus temperature and the solidification behaviors were investigated by monitoring the temperature recalescence and examing the solidification microstructures.A boundary clearly exists,which separates the coupled growth zone from the decoupled growth zone of eutectic phases for the alloys with Sn content ranging from 14% to 31%（mole fraction）.The other Co-Sn alloys out of this content range are hard to be undercooled into the coupled growth zone in the experiment.It is found that the so-called non-reciprocal nucleation phenomenon does not happen in the solidification of undercooled Co-Sn off-eutectic alloys.展开更多
Based on the structure design and results of neutronics analysis of the CH HCSB TBM (Chinese helium cooled solid breeder test blanket module), thermal hydraulic and mechanical analyses have been carried out. Results s...Based on the structure design and results of neutronics analysis of the CH HCSB TBM (Chinese helium cooled solid breeder test blanket module), thermal hydraulic and mechanical analyses have been carried out. Results show that the design of the CH HCSB TBM is reasonable and acceptable.展开更多
Thermo-hydraulic calculation and analysis for sub-module of Chinese HCSB TBM were carried out using FE code ANSYS. Results indicate that temperature distribution in materials used in sub-module is reasonable and accep...Thermo-hydraulic calculation and analysis for sub-module of Chinese HCSB TBM were carried out using FE code ANSYS. Results indicate that temperature distribution in materials used in sub-module is reasonable and acceptable.展开更多
Using three dimension MCNP code and FENDL2.0 data library, neutronics calculation for a HCSB (helium cooling solid breeder ) TBM ( test blanket module ) with 3×3 sub-modules has been performed. Local tritium bree...Using three dimension MCNP code and FENDL2.0 data library, neutronics calculation for a HCSB (helium cooling solid breeder ) TBM ( test blanket module ) with 3×3 sub-modules has been performed. Local tritium breeding ratio (TBR) of 0.907, total tritium generation rate of 0.0175 g· d-1, peak power density of 9.27MW· m-3 and total power deposit of 0.422MW·m-3 are obtained under neutron wall loading of 0.78MW·m-2 and duty factor of 22%.展开更多
The paper is based on the results of two research experiences： an European research titled ＂Improving the Quality of Suburban Building Stock＂ （COST Action TU0701 ） and an Italian National Research project called ...The paper is based on the results of two research experiences： an European research titled ＂Improving the Quality of Suburban Building Stock＂ （COST Action TU0701 ） and an Italian National Research project called ＂Renovation, Regeneration and Valorization of Social Housing Settlements Built in the Suburban Areas in the Second Half of Last Century＂ （PRIN 2010-2012）. The paper summarizes the researches outputs whose main aim was to illustrate the potentialities of different strategies for the improvement of suburbs. In order to implement different strategies for the refurbishment of suburban areas, researches were aimed firstly at the identification of several case studies that are representatives of the European panorama because of their typology, construction and state of physical and social deterioration. The final result was a collection of examples for the urban regeneration, gathered from case studies but offering a wide-scale of applications on public housing complexes. The paper highlights different approaches and strategies taken by different countries towards the methodologies of assessing, refurbishing and adding new value to the suburban areas, in view of increasing not only the quality of buildings but also the quality of public spaces and services, for a better quality of life of the citizens.展开更多
A series of pot experiments and field trials were carried out to evaluate the effects of arbuscular mycor- rhizal fungi （AMF） on activities of soil enzymes and carbon sequestration capacity in reclaimed mine soil. A...A series of pot experiments and field trials were carried out to evaluate the effects of arbuscular mycor- rhizal fungi （AMF） on activities of soil enzymes and carbon sequestration capacity in reclaimed mine soil. A complex substrate of coal gangue, fly ash and sludge was used as reclaimed mine soil, and ryegrass was planted with AMF inoculation to construct a plant-complex substrate-microbe ecological restoration sys- tem. The changes to the soil organic carbon （SOC）, activities of soil enzymes and glomalin-related soil protein （GRSP） were measured and the effects of AMF on activities of soil enzymes and carbon sequestra- tion capacity （n reclaimed mine soil were analyzed. The results show that the contents of GRSP （total glo- malin （TG） and easily extractable glomalin （EEG））, SOC and activities of enzymes increased, and the increments were higher in the AMF inoculation treated plant-complex substrate-microbe ecological res- toration systems than those with no AMF inoculated treatments after 12 months of ryegrass growth. TG, EEG and soil enzyme activity have a significant positive correlation, and the correlative coefficient was 0.427-0.573; SOC and TG, EEG have a significant positive correlation （p 〈 0.01 ）, indicating that AMF plays an important role in carbon sequestration of reclaimed mine soils.展开更多
The helium cooled solid breeder blanket that represents the main stream in relevant blanket concepts. It is considered as one of the main options for the fusion reactor. This concept have advantage as follows： （ 1 ...The helium cooled solid breeder blanket that represents the main stream in relevant blanket concepts. It is considered as one of the main options for the fusion reactor. This concept have advantage as follows： （ 1 ） structure simpleness and stability, （ 2 ） no effect of MHD, （ 3 ） a good compatibility in different materials.展开更多
基金Project(50874073) supported by the National Natural Science Foundation of ChinaProject(2011CB610405) supported by the National Basic Research Program of ChinaProject(2011M500074) supported by China Postdoctoral Science Foundation
文摘A series of Co-Sn alloys with Sn content ranging from 12% to 32%（mole fraction） were undercooled to different degrees below the equilibrium liquidus temperature and the solidification behaviors were investigated by monitoring the temperature recalescence and examing the solidification microstructures.A boundary clearly exists,which separates the coupled growth zone from the decoupled growth zone of eutectic phases for the alloys with Sn content ranging from 14% to 31%（mole fraction）.The other Co-Sn alloys out of this content range are hard to be undercooled into the coupled growth zone in the experiment.It is found that the so-called non-reciprocal nucleation phenomenon does not happen in the solidification of undercooled Co-Sn off-eutectic alloys.
文摘Based on the structure design and results of neutronics analysis of the CH HCSB TBM (Chinese helium cooled solid breeder test blanket module), thermal hydraulic and mechanical analyses have been carried out. Results show that the design of the CH HCSB TBM is reasonable and acceptable.
文摘Thermo-hydraulic calculation and analysis for sub-module of Chinese HCSB TBM were carried out using FE code ANSYS. Results indicate that temperature distribution in materials used in sub-module is reasonable and acceptable.
基金Foundation of National Natural Science (10175018)
文摘Using three dimension MCNP code and FENDL2.0 data library, neutronics calculation for a HCSB (helium cooling solid breeder ) TBM ( test blanket module ) with 3×3 sub-modules has been performed. Local tritium breeding ratio (TBR) of 0.907, total tritium generation rate of 0.0175 g· d-1, peak power density of 9.27MW· m-3 and total power deposit of 0.422MW·m-3 are obtained under neutron wall loading of 0.78MW·m-2 and duty factor of 22%.
文摘The paper is based on the results of two research experiences： an European research titled ＂Improving the Quality of Suburban Building Stock＂ （COST Action TU0701 ） and an Italian National Research project called ＂Renovation, Regeneration and Valorization of Social Housing Settlements Built in the Suburban Areas in the Second Half of Last Century＂ （PRIN 2010-2012）. The paper summarizes the researches outputs whose main aim was to illustrate the potentialities of different strategies for the improvement of suburbs. In order to implement different strategies for the refurbishment of suburban areas, researches were aimed firstly at the identification of several case studies that are representatives of the European panorama because of their typology, construction and state of physical and social deterioration. The final result was a collection of examples for the urban regeneration, gathered from case studies but offering a wide-scale of applications on public housing complexes. The paper highlights different approaches and strategies taken by different countries towards the methodologies of assessing, refurbishing and adding new value to the suburban areas, in view of increasing not only the quality of buildings but also the quality of public spaces and services, for a better quality of life of the citizens.
基金supported by the Environmental Science andTechnology Fund of Environmental Protection Department of Jiangsu Province,China (No. 2007024)
文摘A series of pot experiments and field trials were carried out to evaluate the effects of arbuscular mycor- rhizal fungi （AMF） on activities of soil enzymes and carbon sequestration capacity in reclaimed mine soil. A complex substrate of coal gangue, fly ash and sludge was used as reclaimed mine soil, and ryegrass was planted with AMF inoculation to construct a plant-complex substrate-microbe ecological restoration sys- tem. The changes to the soil organic carbon （SOC）, activities of soil enzymes and glomalin-related soil protein （GRSP） were measured and the effects of AMF on activities of soil enzymes and carbon sequestra- tion capacity （n reclaimed mine soil were analyzed. The results show that the contents of GRSP （total glo- malin （TG） and easily extractable glomalin （EEG））, SOC and activities of enzymes increased, and the increments were higher in the AMF inoculation treated plant-complex substrate-microbe ecological res- toration systems than those with no AMF inoculated treatments after 12 months of ryegrass growth. TG, EEG and soil enzyme activity have a significant positive correlation, and the correlative coefficient was 0.427-0.573; SOC and TG, EEG have a significant positive correlation （p 〈 0.01 ）, indicating that AMF plays an important role in carbon sequestration of reclaimed mine soils.
文摘The helium cooled solid breeder blanket that represents the main stream in relevant blanket concepts. It is considered as one of the main options for the fusion reactor. This concept have advantage as follows： （ 1 ） structure simpleness and stability, （ 2 ） no effect of MHD, （ 3 ） a good compatibility in different materials.
