兰塞奥兹牧草地(英文L’Anse aux Meadows,源自法文L’Anse-aux-Méduses,即"水母湾")是处于加拿大纽芬兰与拉布拉多省纽芬兰岛最北端,由挪威探险家海尔格·英斯塔和他的考古学家妻子安妮·斯泰恩·英斯塔于1...兰塞奥兹牧草地(英文L’Anse aux Meadows,源自法文L’Anse-aux-Méduses,即"水母湾")是处于加拿大纽芬兰与拉布拉多省纽芬兰岛最北端,由挪威探险家海尔格·英斯塔和他的考古学家妻子安妮·斯泰恩·英斯塔于1960年发现的维京人村落遗址。遗址里遗留的建筑物是全北美最古老的欧式建筑,比哥伦布的时代还要早五个世纪。兰塞奥兹牧草地现在被普遍认为是莱弗·艾瑞克森于1000年左右开拓的,地点是北欧史诗中所记载的"文兰"(北美森林地区名称)。展开更多
The conditions for regional circulation of the atmosphere in the periods of severe droughts in Ukraine are described by two circulation indexes. In analogy with experimental index EBI （European Blocking Index） for t...The conditions for regional circulation of the atmosphere in the periods of severe droughts in Ukraine are described by two circulation indexes. In analogy with experimental index EBI （European Blocking Index） for the Eastern Atlantic and Western Europe is proposed a new index ECBI （European Continental Blocking Index）, which describes the blocking of zonal flow over the European continent. The obtained time series of the ECBI for the spring-summer seasons with the severe droughts in Ukraine were analyzed. Katz circulation index was used for the estimating of intensity of the meridional atmospheric processes during the same droughts. It is shown that there registered a high frequency of blocking processes which was accompanied by positive phases of ECBI and an increase in the meridional component of an atmospheric flow over the region of Europe. In years with droughts in average 60% consecutive pentads were with a positive value of ECBI, mostly in April to May. The absolute maximum duration of blocking was the 10 consecutive pentads and observed in 1963. The high positive values of the ECBI and Katz index were connected with strong anomalies in seasonal and monthly fields of wind over territory of Eastern Europe. A close relationship between the ECBI and the Katz index was obtained, which allowed to determine the critical value of the Katz index for the beginning of blocking situation,展开更多
Severe growth abnormalities including shoot stunting, leaf blade reduction and flower bud failure of Brussels sprout were observed in Poland. The presence of phytoplasma in diseased as well as in healthy looking plant...Severe growth abnormalities including shoot stunting, leaf blade reduction and flower bud failure of Brussels sprout were observed in Poland. The presence of phytoplasma in diseased as well as in healthy looking plants, was demonstrated by nested polymerase chain reaction assay employing phytoplasma universal rRNA primer pairs-P1/P7 followed by R16F2n/R16R2. Products of PCR primed by R 16F2n/R 16R2 primer pair from naturally infected Brussels sprouts were sequenced. Comparison of the obtained 16S rDNAs revealed high nucleotide sequence identity between analyzed phytoplasma isolates （99.8%-100%）. They were also nearly identical with the sequences of other phytoplasmas isolates from sub-group 16SrI-B, and they were classified as members of ＂Candidatus Phytoplasma asteris＂.展开更多
以艺术原作为基础、艺术授权为核心的艺术复制品和艺术衍生品的出现,开始让艺术走进千家万户,这有赖于工业时代技术化、规模化生产模式在全球范围内的盛行。1999年,威尔·兰塞（Will Rarmsay）在伦敦发起了第一届＂伦敦买得起艺术...以艺术原作为基础、艺术授权为核心的艺术复制品和艺术衍生品的出现,开始让艺术走进千家万户,这有赖于工业时代技术化、规模化生产模式在全球范围内的盛行。1999年,威尔·兰塞（Will Rarmsay）在伦敦发起了第一届＂伦敦买得起艺术节＂（Affordable Art Fair,AAF）。此后的十几年里,全球已经有多个城市举办和筹备,包括中国的北京,上海和香港。尽管不同城市的艺术节由不同的团队以不同的方式创办,甚至游戏规则,包括定价,展开更多
文摘兰塞奥兹牧草地(英文L’Anse aux Meadows,源自法文L’Anse-aux-Méduses,即"水母湾")是处于加拿大纽芬兰与拉布拉多省纽芬兰岛最北端,由挪威探险家海尔格·英斯塔和他的考古学家妻子安妮·斯泰恩·英斯塔于1960年发现的维京人村落遗址。遗址里遗留的建筑物是全北美最古老的欧式建筑,比哥伦布的时代还要早五个世纪。兰塞奥兹牧草地现在被普遍认为是莱弗·艾瑞克森于1000年左右开拓的,地点是北欧史诗中所记载的"文兰"(北美森林地区名称)。
文摘The conditions for regional circulation of the atmosphere in the periods of severe droughts in Ukraine are described by two circulation indexes. In analogy with experimental index EBI （European Blocking Index） for the Eastern Atlantic and Western Europe is proposed a new index ECBI （European Continental Blocking Index）, which describes the blocking of zonal flow over the European continent. The obtained time series of the ECBI for the spring-summer seasons with the severe droughts in Ukraine were analyzed. Katz circulation index was used for the estimating of intensity of the meridional atmospheric processes during the same droughts. It is shown that there registered a high frequency of blocking processes which was accompanied by positive phases of ECBI and an increase in the meridional component of an atmospheric flow over the region of Europe. In years with droughts in average 60% consecutive pentads were with a positive value of ECBI, mostly in April to May. The absolute maximum duration of blocking was the 10 consecutive pentads and observed in 1963. The high positive values of the ECBI and Katz index were connected with strong anomalies in seasonal and monthly fields of wind over territory of Eastern Europe. A close relationship between the ECBI and the Katz index was obtained, which allowed to determine the critical value of the Katz index for the beginning of blocking situation,
文摘Severe growth abnormalities including shoot stunting, leaf blade reduction and flower bud failure of Brussels sprout were observed in Poland. The presence of phytoplasma in diseased as well as in healthy looking plants, was demonstrated by nested polymerase chain reaction assay employing phytoplasma universal rRNA primer pairs-P1/P7 followed by R16F2n/R16R2. Products of PCR primed by R 16F2n/R 16R2 primer pair from naturally infected Brussels sprouts were sequenced. Comparison of the obtained 16S rDNAs revealed high nucleotide sequence identity between analyzed phytoplasma isolates （99.8%-100%）. They were also nearly identical with the sequences of other phytoplasmas isolates from sub-group 16SrI-B, and they were classified as members of ＂Candidatus Phytoplasma asteris＂.
文摘以艺术原作为基础、艺术授权为核心的艺术复制品和艺术衍生品的出现,开始让艺术走进千家万户,这有赖于工业时代技术化、规模化生产模式在全球范围内的盛行。1999年,威尔·兰塞（Will Rarmsay）在伦敦发起了第一届＂伦敦买得起艺术节＂（Affordable Art Fair,AAF）。此后的十几年里,全球已经有多个城市举办和筹备,包括中国的北京,上海和香港。尽管不同城市的艺术节由不同的团队以不同的方式创办,甚至游戏规则,包括定价,
