In this study,Cordyceps militaris strain QC04 was cultivated in oat,rice,and wheat media for different time periods.We studied the effects of different cultivation media and periods on the fruiting body biomass and ac...In this study,Cordyceps militaris strain QC04 was cultivated in oat,rice,and wheat media for different time periods.We studied the effects of different cultivation media and periods on the fruiting body biomass and active components of C.militaris,aiming to provide reference for the production and utilization of C.militaris QC04.The results showed that the dry weight of the fruiting body of C.militaris was the highest in the wheat medium,moderate in the oat medium,and the lowest in the rice medium.The content of cordycepin and adenosine in the fruiting body and residual medium was higher in the oat and rice media than in the rice medium.The content of cordycepin and adenosine in fruiting body and residual medium peaked on day 55.Furthermore,the content of cordycepin in the fruiting body was lower than that in the residual medium,while the content of adenosine showed an opposite trend.The content of cordycepic acid in the rice medium was generally higher than that in the oat and wheat media.As the cultivation period extended,the fruiting body biomass declined and the content of cordycepic acid in the fruiting body increased slightly.展开更多
Xiashu loess strata are widely distributed along the middle-lower reaches of the Yangtze River in East China with the stratum near Nanjing,Jiangsu Province being typical.The cyclic variability of the stratum was inves...Xiashu loess strata are widely distributed along the middle-lower reaches of the Yangtze River in East China with the stratum near Nanjing,Jiangsu Province being typical.The cyclic variability of the stratum was investigated through comparison of geological features,chemical composition,and swelling-shrinkage properties between the loess and the paleosol layers.Based on the investigation of such a cyclic variability,soil behavior associated with the unsaturated state of the Xiashu loess stratum and its usefulness for geotechnical design and construction in the Nanjing area was analyzed. The stratum consisted of two types of cyclically alternating soil layers,namely the loess and the paleosol layers,which was the major cause for its cyclic variability.The loess and the paleosol layers were formed in different sedimentary environments.In order to avoid detrimental results from the differential engineering properties between them,this study suggested for the practitioners the importance of inspecting the variation of water content and controlling the downward net fluxes during geotechnical construction in the Nanjing area.展开更多
The financial viability of a solar STES （seasonal thermal energy store） installed in a mixed commercial and residential multiunit development of low-energy buildings located in Lysekil, Sweden, a maritime Scandinavi...The financial viability of a solar STES （seasonal thermal energy store） installed in a mixed commercial and residential multiunit development of low-energy buildings located in Lysekil, Sweden, a maritime Scandinavian Climate has been investigated. Using recorded figures for the installation costs and performance, a financial life cycle analysis has been undertaken to determine the cost effectiveness of the system. The time value of money is considered and an LCC （life cycle cost） analysis undertaken to identify the cost-effectiveness of the solution. It shows that while a direct heating and hot water system incorporating STES can be economically viable in a Swedish maritime climate in the long term, assistance such as that provided by government incentives is required to assist with the high capital cost of the initial investment.展开更多
基金Supported by Guizhou Province Science and Technology Major Project(Qiankehe Major Special Project[2019]3007-6)Guizhou Province Science and Technology Support Plan Project(Qiankehe Support[2019]2773)Guizhou Province Reform and Transformation Plan Project(Qiankehe Z Word[2013]4006)。
文摘In this study,Cordyceps militaris strain QC04 was cultivated in oat,rice,and wheat media for different time periods.We studied the effects of different cultivation media and periods on the fruiting body biomass and active components of C.militaris,aiming to provide reference for the production and utilization of C.militaris QC04.The results showed that the dry weight of the fruiting body of C.militaris was the highest in the wheat medium,moderate in the oat medium,and the lowest in the rice medium.The content of cordycepin and adenosine in the fruiting body and residual medium was higher in the oat and rice media than in the rice medium.The content of cordycepin and adenosine in fruiting body and residual medium peaked on day 55.Furthermore,the content of cordycepin in the fruiting body was lower than that in the residual medium,while the content of adenosine showed an opposite trend.The content of cordycepic acid in the rice medium was generally higher than that in the oat and wheat media.As the cultivation period extended,the fruiting body biomass declined and the content of cordycepic acid in the fruiting body increased slightly.
基金Project supported by the Foundation for the Key Disciplines of Nanjing University of Technology.
文摘Xiashu loess strata are widely distributed along the middle-lower reaches of the Yangtze River in East China with the stratum near Nanjing,Jiangsu Province being typical.The cyclic variability of the stratum was investigated through comparison of geological features,chemical composition,and swelling-shrinkage properties between the loess and the paleosol layers.Based on the investigation of such a cyclic variability,soil behavior associated with the unsaturated state of the Xiashu loess stratum and its usefulness for geotechnical design and construction in the Nanjing area was analyzed. The stratum consisted of two types of cyclically alternating soil layers,namely the loess and the paleosol layers,which was the major cause for its cyclic variability.The loess and the paleosol layers were formed in different sedimentary environments.In order to avoid detrimental results from the differential engineering properties between them,this study suggested for the practitioners the importance of inspecting the variation of water content and controlling the downward net fluxes during geotechnical construction in the Nanjing area.
文摘The financial viability of a solar STES （seasonal thermal energy store） installed in a mixed commercial and residential multiunit development of low-energy buildings located in Lysekil, Sweden, a maritime Scandinavian Climate has been investigated. Using recorded figures for the installation costs and performance, a financial life cycle analysis has been undertaken to determine the cost effectiveness of the system. The time value of money is considered and an LCC （life cycle cost） analysis undertaken to identify the cost-effectiveness of the solution. It shows that while a direct heating and hot water system incorporating STES can be economically viable in a Swedish maritime climate in the long term, assistance such as that provided by government incentives is required to assist with the high capital cost of the initial investment.
