|
|
|
题名
|
作者
|
年代
|
出处
|
被引量
|
| 1 | Cooling rate controlled basal precipitates and age hardening response of solid-soluted Mg-Gd-Er-Zn-Zr alloy显示文摘The precipitation and age hardening response of the solid-soluted Mg–10Gd–1Er–1Zn–0.6Zr(wt.%)alloy performed by water-quenching(QC),air-cooling(AC)and furnace-cooling(FC)in terms of the volume fraction of precipitates and tensile properties were investigated in present paper.Results indicated the solid-soluted alloy contained stacking faults(SFs)and long period stacking ordered(LPSO)phase on the basal planes regardless of the cooling rate,but a larger volume fraction of the LPSO phase was formed with decreasing in the cooling rate.After aging,βandβ1 phases precipitated on the prismatic planes,and their number density decreased but mean particle size increased with decreasing in the cooling rate.The solid-soluted alloys(QC,AC and FC samples)showed no apparent difference in yield strength(YS),but their correspondent peak-aged alloys exhibited sharp difference in hardening response.The strongest hardening response took place in the QC sample and showed 82MPa enhancement in YS,which was much larger than that of AC(+26MPa)and FC samples(+5MPa).The reason lies in that the higher cooling rate promotes the precipitation and reduces the average size ofβprecipitate.A novel cooling-rate controlled precipitation model with respect to the correlation of precipitates on basal and prismatic planes was established.From this model,the basal precipitates showed a restrictive effect on the growth and/or coarsening ofβprecipitate,and composite precipitates containing theβphase with fine size as well as high area-number density and lower volume fraction of the LPSO phase are preferred to strengthen the Mg–10Gd–1Er–1Zn–0.6Zr alloy. | Jinlong Fu Wenbo Du Linyue Jia Yunfeng Wang Xunming Zhu Xian Du | 2021 | Journal of Magnesium and Alloys2021，9，4： | 3 |
| 2 | Photocatalytic decarboxylative coupling between α-oxocarboxylicacids and alkenes显示文摘Photocatalytic decarboxylative cross-coupling which achieves the derivatization of widespread organic acids has become a hot topic in organic synthesis.As special acids,α-oxocarboxylicacids show the great potential in running decarboxylation to construct ketone derivatives.In this article,we have developed a photocatalytic decarboxylative cross-coupling ofα-oxocarboxylic acids and olefins to the synthesis of diverse aryl ketones.Various alkenes andα-oxocarboxylicacids were compatible,generating the desired products in up to 90%yield.Preliminary mechanism studies suggest that a free radical pathway is involved in this process. | Ziyue Chen Fangling Lu Feng Yuan Juanjuan Sun Linyu Du Zhen Li Meng Gao Renyi Shi Aiwen Lei | 2019 | Science China Chemistry2019，62，11： | 2 |
| 3 | Quantification of energy related industrial eco-efficiency of China显示文摘Improving eco-efficiency is propitious for saving resources and reducing emissions,and has become a popular route to sustainable development.We define two energy-related eco-efficiencies:energy efficiency(ENE)and greenhouse gas(GHG)emission-related eco-efficiency(GEE)using energy consumption and the associated GHG emissions as the environmental impacts.Using statistical data,we analyze China’s energy consumption and GHG emissions by industrial subsystem and sector,and estimate the ENE and GEE values for China in 2007 as 4.871×10^(7)US·/PJ and 4.26×10^(8)US$/TgCO_(2)eq,respectively.Industry is the primary contributing subsystem of China’s economy,contributing 45.2%to the total economic production,using 79.6%of the energy consumed,and generating 91.4%of the total GHG emissions.We distinguish the individual contributions of the 39 industrial sectors to the national economy,overall energy consumption,and GHG emissions,and estimate their energyrelated eco-efficiencies.The results show that although ferrous metal production contributes only 3.5%to the national industrial economy,it consumes the most industrial energy(20%of total),contributes 16%to the total industrial global warming potential(GWP),and ranks third in GHG emissions.The power and heat sector ranks first in GHG emissions and contributes one-third of the total industrial GWP,although it only consumes about 8%of total industrial energy and,like ferrous metal production,contributes 3.5%to the national economy.The ENE of the ferrous metal and power and heat sectors are only 8 and 2.1×10^(7)US$/PJ,while the GEE for these two sectors are 9 and 4×10^(4)US$/GgCO_(2)eq,respectively;these are nearly the lowest ENE and GEE values among all 39 industry sectors.Finally,we discuss the possibility of ecoefficiency improvement through a comparison with other countries. | Jiansu MAO Yanchun DU Linyu XU Yong ZENG | 2011 | Frontiers of Environmental Science & Engineering2011，5，4： | 1 |
| 4 | SARS-CoV-2 immunity and functional recovery of COVID-19 patients 1-year after infection显示文摘The long-term immunity and functional recovery after SARS-CoV-2 infection have implications in preventive measures and patient quality of life.Here we analyzed a prospective cohort of 121 recovered COVID-19 patients from Xiangyang,China at 1-year after diagnosis.Among them,chemiluminescence immunoassay-based screening showed 99%(95%CI,98–100%)seroprevalence 10–12 months after infection,comparing to 0.8%(95%CI,0.7–0.9%)in the general population.Total anti-receptor-binding domain(RBD)antibodies remained stable since discharge,while anti-RBD IgG and neutralization levels decreased over time.A predictive model estimates 17%(95%CI,11–24%)and 87%(95%CI,80–92%)participants were still 50%protected against detectable and severe re-infection of WT SARS-CoV-2,respectively,while neutralization levels against B.1.1.7 and B.1.351 variants were significantly reduced.All non-severe patients showed normal chest CT and 21%reported COVID-19-related symptoms.In contrast,53%severe patients had abnormal chest CT,decreased pulmonary function or cardiac involvement and 79%were still symptomatic.Our findings suggest long-lasting immune protection after SARS-CoV-2 infection,while also highlight the risk of immune evasive variants and long-term consequences for COVID-19 survivors. | Yan Zhan Yufang Zhu Shanshan Wang Shijun Jia Yunling Gao Yingying Lu Caili Zhou Ran Liang Dingwen Sun Xiaobo Wang Zhibing Hou Qiaoqiao Hu Peng Du Hao Yu Chang Liu Miao Cui Gangling Tong Zhihua Zheng Yunsheng Xu Linyu Zhu Jin Cheng Feng Wu Yulan Zheng Peijun Liu Peng Hong | 2021 | Signal Transduction and Targeted Therapy2021，6，11： | 0 |
您所在的机构暂未开通此部分的功能，请联系管理员