Dense pre-hydrated geosynthetic clay liners(DPH GCLs)were manufactured as innovative materials accompanied by the advantage of lower hydraulic conductivity(k).The k of DPH GCLs permeated with de-ionized water(DIW)was ...Dense pre-hydrated geosynthetic clay liners(DPH GCLs)were manufactured as innovative materials accompanied by the advantage of lower hydraulic conductivity(k).The k of DPH GCLs permeated with de-ionized water(DIW)was 9.8×10^(−12) m/s.The effect of Cu^(2+)synthetic solution on DPH GCLs was discussed.Furthermore,the effect mechanism was studied on the basis of test technologies.A significant adverse impact on hydraulic performance of DPH GCLs is found when the concentration of Cu^(2+)is greater than 1 g/L.SEM,XRD,XRF,FTIR,and XPS analyses show that the effect of Cu^(2+)on DPH GCLs includes two steps.Firstly,Cu^(2+)interacts with hydrophobic organic matter(HOM),and the adhesion of bentonite is destroyed,and some holes appear.The Cu^(2+)contacts with bentonite directly,and Cu^(2+)interacts with bentonite through ion exchange.Passivated phenomenon occurs on the surface of the bentonite,and swelling ability of bentonite is reduced,which causes permeable DPH GCLs.展开更多
同源修辞格的英文名是 paregmenon,源自希腊文 paragein,意为 to bring side by side(使并列)。作为一种修辞手法,paregmenon在一般辞书或修辞学专著里很少提及,也较鲜为人知。在 Encyclopedia of English(《英语百科全书》)中,paregmen...同源修辞格的英文名是 paregmenon,源自希腊文 paragein,意为 to bring side by side(使并列)。作为一种修辞手法,paregmenon在一般辞书或修辞学专著里很少提及,也较鲜为人知。在 Encyclopedia of English(《英语百科全书》)中,paregmenon 的定义是:“theuse of several words of similar origin close to-gether”,并举有例子:He believes the best de-fense is to be offensive.(他相信最好的防御就是进攻。)另外美国修辞学专家 Gideon O.展开更多
参见 W94:1682,1713,1721,1722W941691 禾谷类作物氮素需求计算模型[会,英]/Bradbury,N.I.…//Proceedings-Congress of the Eu-ropean Society of Agronomy/Scaife,A..-Colmar,France:European Society of Agronomy,1990.-2003.-ISBN 2...参见 W94:1682,1713,1721,1722W941691 禾谷类作物氮素需求计算模型[会,英]/Bradbury,N.I.…//Proceedings-Congress of the Eu-ropean Society of Agronomy/Scaife,A..-Colmar,France:European Society of Agronomy,1990.-2003.-ISBN 2-9505124-0-2[WBTA,1992,9(6),5445]W941692 氮素供应及氮素效率系数:平衡方法中的两个关键因素,在小麦和玉米上的应用[会,法]/展开更多
在前期FeN/C催化剂研究的基础上,以不同的含硫化合物为硫源,在Ar气氛下高温热处理获得一系列FeNS/C催化剂。使用线性扫描伏安法测试催化剂的氧还原活性,通过热重分析、比表面积和孔径分布测试对催化剂前驱体的热性质及催化剂的结构等进...在前期FeN/C催化剂研究的基础上,以不同的含硫化合物为硫源,在Ar气氛下高温热处理获得一系列FeNS/C催化剂。使用线性扫描伏安法测试催化剂的氧还原活性,通过热重分析、比表面积和孔径分布测试对催化剂前驱体的热性质及催化剂的结构等进行表征。结果表明,分别以硫脲为硫源,1,10-菲啰啉为氮源,FeCl_3为铁源,Black Pearl 2000为载体,催化剂前驱体中硫含量为1wt.%时,所得催化剂比表面积为559. 39 m^2/g,且催化剂表现出较好的氧还原催化活性。硫源的种类、热性质对催化剂的氧还原活性有着明显影响。展开更多
By dint of historical herbarium specimens, we show how changes in species and habitat diversity can be reviewed and correlated with historical events. Our work is based on a digital database of specimens of the BOKU h...By dint of historical herbarium specimens, we show how changes in species and habitat diversity can be reviewed and correlated with historical events. Our work is based on a digital database of specimens of the BOKU herbarium (WHB), which can be assigned to the Pannonian region of eastern Lower Austria. The complete dataset (n = 6655 specimens) was analyzed with the aid of statistical methods allowing computational elimination of collectors' effects (i.e. unbalanced collecting interests of collectors over time;multiple regression analysis, general linear model), from the first herbarium specimens (dating back to 1830) to the present. As a result, a significant decrease in the proportion of species of some habitats (above all water bodies and closely associated habitats, humid and wet meadows, fens and fen meadows, and nutrient poor grassland) was detected. For water-influenced habitats, this decrease correlates with the time of Danube regulation. Moreover, an increase in the proportion of species of ruderal sites was asserted during the observation period. The analysis procedure developed can be used for evaluation of major digitized herbaria in order to trace historical changes in species and habitat diversity.展开更多
FENS, the Federation of European Neuroscience Societies, represents a large number of national European neuroscience societies and several monodisciplinary societies. FENS was founded in 1998 at the Forum of European ...FENS, the Federation of European Neuroscience Societies, represents a large number of national European neuroscience societies and several monodisciplinary societies. FENS was founded in 1998 at the Forum of European Neuroscience in Berlin and is the successor organisation of ENA, the European Neuroscience Association.展开更多
基金National Key Research and Development Project of China(No.2017FB0310902)。
文摘Dense pre-hydrated geosynthetic clay liners(DPH GCLs)were manufactured as innovative materials accompanied by the advantage of lower hydraulic conductivity(k).The k of DPH GCLs permeated with de-ionized water(DIW)was 9.8×10^(−12) m/s.The effect of Cu^(2+)synthetic solution on DPH GCLs was discussed.Furthermore,the effect mechanism was studied on the basis of test technologies.A significant adverse impact on hydraulic performance of DPH GCLs is found when the concentration of Cu^(2+)is greater than 1 g/L.SEM,XRD,XRF,FTIR,and XPS analyses show that the effect of Cu^(2+)on DPH GCLs includes two steps.Firstly,Cu^(2+)interacts with hydrophobic organic matter(HOM),and the adhesion of bentonite is destroyed,and some holes appear.The Cu^(2+)contacts with bentonite directly,and Cu^(2+)interacts with bentonite through ion exchange.Passivated phenomenon occurs on the surface of the bentonite,and swelling ability of bentonite is reduced,which causes permeable DPH GCLs.
文摘同源修辞格的英文名是 paregmenon,源自希腊文 paragein,意为 to bring side by side(使并列)。作为一种修辞手法,paregmenon在一般辞书或修辞学专著里很少提及,也较鲜为人知。在 Encyclopedia of English(《英语百科全书》)中,paregmenon 的定义是:“theuse of several words of similar origin close to-gether”,并举有例子:He believes the best de-fense is to be offensive.(他相信最好的防御就是进攻。)另外美国修辞学专家 Gideon O.
文摘参见 W94:1682,1713,1721,1722W941691 禾谷类作物氮素需求计算模型[会,英]/Bradbury,N.I.…//Proceedings-Congress of the Eu-ropean Society of Agronomy/Scaife,A..-Colmar,France:European Society of Agronomy,1990.-2003.-ISBN 2-9505124-0-2[WBTA,1992,9(6),5445]W941692 氮素供应及氮素效率系数:平衡方法中的两个关键因素,在小麦和玉米上的应用[会,法]/
文摘W942002 土壤氮动态 SACFARM 模型有效性的初步结果[刊,意]/Spallacci,P.…∥Annali dell’Isti-tuto Sperimentale Agronomico.-1990,21(Suppl.2).-143～162(WBTA,1993,10(2),1597]W942003 早种植引起的土壤团粒性、有机物质及微生物生物量的变化[刊,英]/Angers,D.A.…∥Soil Science Society of America Journal.-1992。
文摘在前期FeN/C催化剂研究的基础上,以不同的含硫化合物为硫源,在Ar气氛下高温热处理获得一系列FeNS/C催化剂。使用线性扫描伏安法测试催化剂的氧还原活性,通过热重分析、比表面积和孔径分布测试对催化剂前驱体的热性质及催化剂的结构等进行表征。结果表明,分别以硫脲为硫源,1,10-菲啰啉为氮源,FeCl_3为铁源,Black Pearl 2000为载体,催化剂前驱体中硫含量为1wt.%时,所得催化剂比表面积为559. 39 m^2/g,且催化剂表现出较好的氧还原催化活性。硫源的种类、热性质对催化剂的氧还原活性有着明显影响。
文摘By dint of historical herbarium specimens, we show how changes in species and habitat diversity can be reviewed and correlated with historical events. Our work is based on a digital database of specimens of the BOKU herbarium (WHB), which can be assigned to the Pannonian region of eastern Lower Austria. The complete dataset (n = 6655 specimens) was analyzed with the aid of statistical methods allowing computational elimination of collectors' effects (i.e. unbalanced collecting interests of collectors over time;multiple regression analysis, general linear model), from the first herbarium specimens (dating back to 1830) to the present. As a result, a significant decrease in the proportion of species of some habitats (above all water bodies and closely associated habitats, humid and wet meadows, fens and fen meadows, and nutrient poor grassland) was detected. For water-influenced habitats, this decrease correlates with the time of Danube regulation. Moreover, an increase in the proportion of species of ruderal sites was asserted during the observation period. The analysis procedure developed can be used for evaluation of major digitized herbaria in order to trace historical changes in species and habitat diversity.
文摘FENS, the Federation of European Neuroscience Societies, represents a large number of national European neuroscience societies and several monodisciplinary societies. FENS was founded in 1998 at the Forum of European Neuroscience in Berlin and is the successor organisation of ENA, the European Neuroscience Association.
