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Changes of Gas Exchanges in Leaves of Different Cultivars of Winter Wheat Released in Different Years 被引量:5
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作者 刘合芹 蒋高明 +6 位作者 张其德 孙家柱 渠春梅 郭仁俊 高雷明 白克智 匡廷云 《Acta Botanica Sinica》 CSCD 2002年第8期913-919,共7页
Three winter wheat cultivars ( Triticum aestivum L.), representatives of those widely cultivated in Beijing over the past six decades, were grown in the same environmental condition, and their physiological features w... Three winter wheat cultivars ( Triticum aestivum L.), representatives of those widely cultivated in Beijing over the past six decades, were grown in the same environmental condition, and their physiological features were investigated. Daily changes of net photosynthetic rate (P-n), transpiration (T-r) in different growth stages were measured in order to find the relationship between leaf photosynthesis and yield. Instantaneous water use efficiency (WUE) of leaf was calculated from P-n/T-r. It is suggested that relationship between photosynthetic rate and yield changed with the developing stages of wheat. High yield wheat cultivar Jingdong 8 (released in the 1990s) had a higher photosynthetic rate ( the maximal P-n increased by 77%) and transpiration rate (the maximal T-r increased by 69%), but a lower WUE than the low yield cultivar Yanda 1817 (released in the 1940s) during the day time at stem elongation stage. However; difference of P-n among the three cultivars changed with wheat growth process. Before 10 o'clock P-n in leaves of Jingdong 8 usually was the highest of the three cultivars, but P-n of Yanda 1817 was the highest after 10 o'clock. At dough ripe stage, P-n in leaves of Yanda. 1817 was the highest among the three cultivars during the whole day. The difference of changing trend of transpiration in three wheat cultivars was similar to P,, but WUE of Yanda 1817 was the highest in those three cultivars, indicating that the higher yield of Jingdong 8 was achieved via a greater consumption of water. Contrary to the cultivars released in the later period, midday depression of photosynthesis was small in Yanda 1817, which might suggest that Yanda 1817 was resistant to photoinhibition. It is possible that photosynthetic potential in leaves of wheat increased as wheat cultivars was improved over the past six decades. However, it became less resistant to photoinhibition. 展开更多
关键词 net photosynthesis daily change wheat cultivars transpiration rate water use efficiency
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From Sunset Winter to Caetano's Spring: The Importance of a Song Contest in the Portuguese Music Scene of the 1960's and 1970's
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作者 Sofia Isabel Fonseca Vieira Lopes 《Journal of Literature and Art Studies》 2015年第6期461-470,共10页
I propose to introduce a few lines of analysis for the RTP Song Contest (Portuguese Radio and Television Song Contest--Festival RTP da Cancāo). I intend to raise a few questions that will help us to understand the ... I propose to introduce a few lines of analysis for the RTP Song Contest (Portuguese Radio and Television Song Contest--Festival RTP da Cancāo). I intend to raise a few questions that will help us to understand the role of this competition in the Portuguese musical and cultural scene of the 1960s. RTP Song Contest is the longest television song contest in Portugal. This competition went through several crucial moments in the recent history of Portugal, witnessing the change from dictatorship to democracy. In late 1960s, still under the authoritarian regime, several social changes took place and music played an important role in these changes, as several studies have documented. In 1969, Portugal bet on Simone de Oliveira to bring us the prize, but the result was not the expected. This event brought us many questions about the importance of the Portuguese participation in the Eurovision Song Contest and the faimess of the European evaluation. This paper intends to reflect the implications of this particular event and the importance of the Contest for the Portuguese music scene at the end of the critical 1960's. With this paper, I intend to introduce some lines of analysis of the first ten years of the Portuguese Radio and Television Song Contest (Festival RTP da Cang6o--RTP Song Contest). I intend to raise a few questions that will help us to understand the role of this competition in the Portuguese musical and cultural scene of the late 1960s and 1970s, based on the study of the daily press. RTP Song Contest is the most long-life television contest in Portugal. For this reason, it is important to make a short historical overview of this period and the history of television in Portugal. At the same time, the analysis of statistical data of audiences enables us to understand the television phenomenon in the late 1960s. 展开更多
关键词 music and television Festival RTP da Cangcāo Eurovision Song Contest ETHNOMUSICOLOGY
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Formation Mechanism for the Anomalous Anticyclonic Circulation over Northeast Asia and the Japan Sea in Boreal Winter 1997/98 and the Spring of 1998 被引量:4
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作者 WANG Hai LIU Qinyu ZHENG Jian 《Journal of Ocean University of China》 SCIE CAS 2013年第2期312-317,共6页
A robust anomalous anticyclonic circulation (AAC) was observed over Northeast Asia and the Japan Sea in boreal win-ter 1997/98 and over the Japan Sea in spring 1998. The formation mechanism is investigated. On the bac... A robust anomalous anticyclonic circulation (AAC) was observed over Northeast Asia and the Japan Sea in boreal win-ter 1997/98 and over the Japan Sea in spring 1998. The formation mechanism is investigated. On the background of the vertically sheared winter monsoonal flow, anomalous rainfall in the tropical Indo-Western Pacific warm pool excited a wave train towards East Asia in the upper troposphere during boreal winter of 1997/98. The AAC over Northeast Asia and the Japan Sea is part of the wave train of equivalent barotropic structure. The AAC over the Japan Sea persisted from winter to spring and even intensified in spring 1998. The diagnostic calculations show that the vorticity and temperature fluxes by synoptic eddies are an important mechanism for the AAC over the Japan Sea in spring 1998. 展开更多
关键词 anomalous anticyclonic circulation Northeast Asia Japan Sea wave train synoptic eddy
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Korean Wave: Towards Regional Cultural Diffusion?
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作者 Seiko Yasumoto 《Journal of Literature and Art Studies》 2013年第2期101-112,共12页
The aim of this paper is firstly to determine if the Korean television drama Winter Sonata and its spinoffs are contributing to contemporary cross-cultural diffusion in Japan. Secondly, if cross-cultural diffusion is ... The aim of this paper is firstly to determine if the Korean television drama Winter Sonata and its spinoffs are contributing to contemporary cross-cultural diffusion in Japan. Secondly, if cross-cultural diffusion is occurring, is it contributing to a loss of local identity? Winter Sonata is a small but significant part of the Korean Wave and in the vanguard of Korean television drama content viewed in Japan. There have been macro political changes in East Asia, largely driven by Korea, resulting in an easing of restrictions on cross-border media trade. These in turn have progressively created a new dynamic in content and volume. The methodology used for the study is triangulation including document analysis, audience analysis, and commercial outcomes. The convergent validation derived from the three parameters advances the proposition that Winter Sonata has contributed to cultural diffusion from a Japanese perspective but not to a loss of local identity. Arguably, the process is an enriching one in East Asia reinforced by multi-lateral media trade. 展开更多
关键词 popular culture Korean Wave cross-cultural diffusion cultural hybridity TRIANGULATION
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冬日
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作者 钟晶晶 《上海文学》 北大核心 2000年第1期36-39,共4页
这个冬天的太阳很好。确切地说,是这个冬天的这个下午的太阳很好。在这个太阳很好的冬天的下午她躺在家中的床上,手里拿着一本《析梦词典》。丈夫上班去了,女儿要到傍晚才放学回家,炉子上的开水壶正心事重重地自言自语。她将书翻到“百... 这个冬天的太阳很好。确切地说,是这个冬天的这个下午的太阳很好。在这个太阳很好的冬天的下午她躺在家中的床上,手里拿着一本《析梦词典》。丈夫上班去了,女儿要到傍晚才放学回家,炉子上的开水壶正心事重重地自言自语。她将书翻到“百合花”一节。书中写道:“梦见盛开的百合花意味着某种机遇的来临。洁白的百合是爱情的象征。但如果这花朵枯萎了,则意味着爱情或婚姻有变。 展开更多
关键词 短篇小说 <<冬日>> 钟晶晶 当代
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代薇的诗(五首)
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作者 代薇 《诗刊》 北大核心 2000年第3期4-6,共3页
关键词 诗歌 新诗 <<风铃>> <<洞箫>> <<冬日鸟鸦>>
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