期刊文献+
共找到13,523篇文章
< 1 2 250 >
每页显示 20 50 100
接枝改性橡Yuan栲胶的性能及其应用 被引量:1
1
作者 汪建根 杨冬亚 《中国皮革》 CAS 北大核心 2002年第9期1-5,共5页
通过使用光学显微镜和扫描电镜,对Yuan栲胶改性产物应用于浸酸山羊皮的鞣制进行了研究,筛选确定最佳的鞣制工艺条件,所得坯革粒面细致,革身丰满柔软,物理机械性能均优于橡Yuan栲胶鞣坯革。
关键词 接枝改性 yuan栲胶 性能 应用 鞣制 皮革
下载PDF
求解无约束优化问题的Dai-Yuan记忆梯度法 被引量:3
2
作者 张劲松 余荣忠 李红 《四川师范大学学报(自然科学版)》 CAS CSCD 北大核心 2009年第6期731-733,共3页
将Dai-Yuan共轭梯度法的前提条件βk>0改为βk<0,根据搜索方向的下降性要求,得出一个新的记忆梯度法,并做出了收敛性证明.新算法与Dai-Yuan共轭梯度法联系紧密.数值实验表明了该算法的有效性.
关键词 Dai-yuan共轭梯度法 记忆梯度法 WOLFE线搜索 收敛性
下载PDF
含参数Dai-Yuan共轭梯度法及其收敛性 被引量:4
3
作者 张劲松 李红 《华东交通大学学报》 2008年第1期127-129,共3页
通过对Dai-Yuan共轭梯度法的分析,将βkDY推广到更一般的形式.根据搜索方向的下降性要求,得出含参数Dai-Yuan共轭梯度法.在Wolfe条件下,证明了方法的收敛性;在强Wolfe条件下,证明了方法的充分下降性.含参数Dai-Yuan共轭梯度法不仅仅是Da... 通过对Dai-Yuan共轭梯度法的分析,将βkDY推广到更一般的形式.根据搜索方向的下降性要求,得出含参数Dai-Yuan共轭梯度法.在Wolfe条件下,证明了方法的收敛性;在强Wolfe条件下,证明了方法的充分下降性.含参数Dai-Yuan共轭梯度法不仅仅是Dai-Yuan共轭梯度法在形式上的推广,其参数的合理选择有望使Dai-Yuan共轭梯度法良好的数值表现得到进一步改善. 展开更多
关键词 Dai-yuan共轭梯度法 Wolfe条件 收敛性 充分下降性
下载PDF
Yuan Museum——精品生活方式美学博物馆
4
作者 温浩 《家具与室内装饰》 2020年第7期56-63,共8页
关于Yuan Museum于2019年创办,是一座收藏20世纪现代设计作品以及当代设计的博物馆。Yuan Museum藏品500多件,以生活美学为核心,收藏有家具、艺术地毯、漆器、陶器、首饰、艺术装置等诸多门类,能完整展现出一个世纪以来东西方的生活方... 关于Yuan Museum于2019年创办,是一座收藏20世纪现代设计作品以及当代设计的博物馆。Yuan Museum藏品500多件,以生活美学为核心,收藏有家具、艺术地毯、漆器、陶器、首饰、艺术装置等诸多门类,能完整展现出一个世纪以来东西方的生活方式美学的源流与脉络,是中国不可多得的精品生活方式美学博物馆,对设计者和观众极具吸引力。 展开更多
关键词 生活美学 博物馆 yuan 当代设计 吸引力 精品
下载PDF
Yuan Museum——精品生活方式美学博物馆(三)
5
作者 温浩 《家具与室内装饰》 2020年第9期38-45,共8页
关于Yuan Museum于2019年创办,是一个收藏20世纪现代设计作品以及当代设计的博物馆。Yuan Museum藏品500多件,以生活美学为核心,收藏有家具、艺术地毯、漆器、陶器、首饰、艺术装置等诸多门类,能完整展现出一个世纪以来东西方的生活方... 关于Yuan Museum于2019年创办,是一个收藏20世纪现代设计作品以及当代设计的博物馆。Yuan Museum藏品500多件,以生活美学为核心,收藏有家具、艺术地毯、漆器、陶器、首饰、艺术装置等诸多门类,能完整展现出一个世纪以来东西方的生活方式美学的源流与脉络,是中国不可多得的精品生活方式美学博物馆,对设计者和观众极具吸引力。 展开更多
关键词 生活美学 博物馆 yuan 当代设计 吸引力 精品
下载PDF
Yuan Museum——精品生活方式美学博物馆(二)
6
作者 温浩 《家具与室内装饰》 2020年第8期41-49,共9页
关于Yuan Museum于2019年创办,是一个收藏20世纪现代设计作品以及当代设计的博物馆。Yuan Museum藏品500多件,以生活美学为核心,收藏有家具、艺术地毯、漆器、陶器、首饰、艺术装置等诸多门类,能完整展现出一个世纪以来东西方的生活方... 关于Yuan Museum于2019年创办,是一个收藏20世纪现代设计作品以及当代设计的博物馆。Yuan Museum藏品500多件,以生活美学为核心,收藏有家具、艺术地毯、漆器、陶器、首饰、艺术装置等诸多门类,能完整展现出一个世纪以来东西方的生活方式美学的源流与脉络,是中国不可多得的精品生活方式美学博物馆,对设计者和观众极具吸引力。 展开更多
关键词 生活美学 博物馆 yuan 当代设计 (二) 吸引力
下载PDF
The Influence of Aesthetic Ideology of TAO Yuan-ming on Classical Gardens in South China 被引量:1
7
作者 杨俊 《Journal of Landscape Research》 2011年第12期94-96,共3页
Based on the contents and temperament of pastoral poetries written by TAO Yuan-ming,by centering on respecting the nature,indifference and optimism,and plainness and authenticity,the paper had analyzed aesthetic ideol... Based on the contents and temperament of pastoral poetries written by TAO Yuan-ming,by centering on respecting the nature,indifference and optimism,and plainness and authenticity,the paper had analyzed aesthetic ideologies contained in his poetries.On this basis,it had discussed the influence of aesthetic ideology of TAO Yuan-ming on the style of classical gardens in South China,which were quiet and natural,elegant and fresh,simple and plain,and far-reaching in artistic conception.By combining with cases,it pointed out that the poetic prose had been directly quoted as the names of gardens or scenic spots of classical gardens in South China,and showed that the aesthetic ideology of TAO Yuan-ming had set up a successful ideal model for cultural landscapes,producing far-reaching influence on the aesthetic state of mind of gardeners or owners of gardens,further instilling humanistic spirit into classical gardens in South China. 展开更多
关键词 TAO yuan-ming Nature INDIFFERENCE and OPTIMISM AESTHETIC state of mind HUMANISTIC SPIRIT Classic gardens in South China
下载PDF
拟南芥YUAN1基因调控器官形状和大小 被引量:1
8
作者 张海瑞 徐冉 +3 位作者 高玉梅 金维环 郜刚 李云海 《遗传》 CAS CSCD 北大核心 2013年第9期1106-1116,共11页
器官形状和大小的控制是一个基本的发育生物学过程,受细胞分裂和细胞扩展的影响。到目前为止,人们对植物器官形状和大小的调控机制知之甚少。本实验室前期研究发现了一个种子和器官大小的调控基因DA1,其编码一个泛素受体。在拟南芥(Arab... 器官形状和大小的控制是一个基本的发育生物学过程,受细胞分裂和细胞扩展的影响。到目前为止,人们对植物器官形状和大小的调控机制知之甚少。本实验室前期研究发现了一个种子和器官大小的调控基因DA1,其编码一个泛素受体。在拟南芥(Arabidopsis thaliana)中,DA1通过抑制细胞的分裂来限制种子和器官的大小。本研究通过激活标签的方法在da1-1突变体背景下筛选到一个叶子形状发生改变的半显性突变体(yuan1-1D)。yuan1-1D形成短而圆的叶片和短的叶柄,细胞学分析显示,叶片和叶柄变短的主要原因是细胞的长向扩展降低导致的。YUAN1编码一个含有PHD锌指结构域的蛋白。GFP-YUAN1融合蛋白定位在细胞核内。过量表达YUAN1基因导致叶片和叶柄变短。遗传学分析显示,YUAN1和DA1、ROT3以及ROT4在控制叶片形状和大小方面作用于不同的遗传途径中。因此,本研究鉴定了一个新的控制器官形状和大小的基因YUAN1,为阐明植物器官形状和大小调控的分子机制提供了重要线索。 展开更多
关键词 yuan1 PHD锌指结构域 器官形状和大小 细胞伸长
下载PDF
Comparative Textual Studies on Bai Hua's Poem Xiatian Hai Hen Yuan and Its English Translations
9
作者 杨安文 牟厚宇 《海外英语》 2020年第12期35-37,共3页
Based on the poem Xiatian Hai Hen Yuan夏天还很远, one of the most characteristic works of the Chinese poet Bai Hua, along with its four English translations, this paper conducts comparative textual studies with regard... Based on the poem Xiatian Hai Hen Yuan夏天还很远, one of the most characteristic works of the Chinese poet Bai Hua, along with its four English translations, this paper conducts comparative textual studies with regard to three aspects, including the translation of hidden personae, the selection of the tense and aspectas well as the rendition of poetic rhythms. The author holds the view that, on the one hand, different textual interpretations have gone a long way toward the dissemination of the original poem in the English-speaking world;on the other hand, the translator's proper understanding and rendition is of great significance with a view to a better presentation of the unique beauty of Chinese poetry both in the content and the form. 展开更多
关键词 Bai Hua Xiatian Hai Hen yuan夏天还很远 English translations comparative textual studies
下载PDF
Application of the Mongol-Yuan Culture in the Modern Landscape Design
10
作者 潘冬梅 王毅承 《Journal of Landscape Research》 2009年第10期61-66,共6页
The application principles of the Mongol-Yuan culture in the landscape elements are found out,through the research on the meaning of Mongol-Yuan culture and the connectivity between culture and landscape elements.The ... The application principles of the Mongol-Yuan culture in the landscape elements are found out,through the research on the meaning of Mongol-Yuan culture and the connectivity between culture and landscape elements.The application of the Mongol-Yuan culture is specified by a typical design case analysis so as to offer some references for the modern landscape design.The Mongol-Yuan culture can be applied to the modern landscape elements,such as landform,architecture,sculpture,paving and so on.And the artistic conception of the Mongol-Yuan culture can be created by the application of the Mongolian totem culture,characteristic style,featured pattern,local customs and so on. 展开更多
关键词 Mongol-yuan CULTURE Modern LANDSCAPE TOTEM WORSHIP MONGOLIAN pattern Non-material LANDSCAPE Sustainability
下载PDF
Molecular Biological Mechanisms of Yuan Zhi Powder in the Treatment of Alzheimer's Disease: an Analysis Based on Network Pharmacology 被引量:9
11
作者 Wei-Jie QIANG Ying CHEN +9 位作者 Fu-Yuan HE Mei-Feng XIAO Wei-Yan CAI Yi-Fei DAI Qing YANG Yu-Jie LI Xiao-Gang WENG Qi LI Ya-Jie WANG Xiao-Xin ZHU 《Digital Chinese Medicine》 2018年第1期90-101,共12页
Objective To predict the main active ingredients,potential targets and molecular mechanisms of Yuan Zhi powder in treatment of dementia by using network pharmacology.Methods A database of chemical constituents of Yuan... Objective To predict the main active ingredients,potential targets and molecular mechanisms of Yuan Zhi powder in treatment of dementia by using network pharmacology.Methods A database of chemical constituents of Yuan Zhi powder was constructed by using databases and literatures.Potential targets were predicted by reverse molecular docking,and then a component-target network was constructed.The target network of Alzheimer's disease(AD)was mapped and analyzed to obtain the“active ingredient-AD target”network.The key targets were screened through network analysis.Finally,the rationality of the prediction was analyzed by comparing with the target reported in the literatures.Results There were180chemical constituents acting on the AD target,and the targets included three key targets(cyclooxygenase-2,muscarinic acetylcholine receptor M1,and muscarinic acetylcholine receptor M2)and an important target(acetylcholine esterase).Alzheimer's disease may be treated by regulating the activity of acetylcholine receptors and the binding toβ-amyloid protein,and its biological process may be concentrated in the acetylcholine receptor signal pathway,negative regulation of synaptic transmission and so on.Conclusion The fact that Yuan Zhi powder can treat AD is consistent with the characteristics of multi-components-multitargets-multiple pathways of traditional Chinese medicine.The important targets obtained from network analysis have a large proportion in literature research,so network analysis have some rationality. 展开更多
关键词 yuan Zhi powder Network pharmacology Active ingredients–AD targets network Network analysis DEMENTIA
下载PDF
A Preliminary Study of Confucianism and Its Impact on the Political Culture of the Mongol-Yuan Period
12
作者 郭晓丽 Guo Xiao 《孔学堂》 2016年第1期4-14,共11页
下载PDF
一类线性等式约束优化的投影Dai-Yuan共轭梯度法及其全局收敛性 被引量:1
13
作者 许春玲 孙颖异 +1 位作者 李健 孙中波 《东北师大学报(自然科学版)》 CAS 北大核心 2019年第2期39-44,共6页
针对具有等式约束的非线性最优化问题,提出了一类具有充分下降特性的投影Dai-Yuan共轭梯度法.在每次迭代过程中,算法均可得到充分下降的搜索方向.在适当条件下,证明了算法产生的搜索方向为可行下降方向,分析了算法的全局收敛性.数值结... 针对具有等式约束的非线性最优化问题,提出了一类具有充分下降特性的投影Dai-Yuan共轭梯度法.在每次迭代过程中,算法均可得到充分下降的搜索方向.在适当条件下,证明了算法产生的搜索方向为可行下降方向,分析了算法的全局收敛性.数值结果表明算法是可行的、有效的. 展开更多
关键词 非线性等式约束优化 Dai-yuan共轭梯度法 全局收敛性 充分下降方向
下载PDF
Sun Yuan and Peng Yu 被引量:1
14
作者 Diana Freundl 《大美术》 2007年第9期149-152,共4页
■Since April,all Magazine has examined five artist couples working in China.This month we lookatthe youngest of the artistic duos,Peng Yu and Sun Yuan,whose
关键词 TH AS BE Sun yuan and Peng Yu
下载PDF
Professor Yuan Cheng (Bert) Fung:My Respected Mentor and Cherished Friend
15
作者 胡流源 《医用生物力学》 EI CAS CSCD 北大核心 2018年第S1期7-15,共9页
On September 14,2008,Drs.Shu Chien,Peter Chen,Geert Schmid-Schonbein,Pin Tong and I had the great pleasure of organizing a beautiful event in San Diego,California to celebration Dr.Fung’s 90thbirthday with his studen... On September 14,2008,Drs.Shu Chien,Peter Chen,Geert Schmid-Schonbein,Pin Tong and I had the great pleasure of organizing a beautiful event in San Diego,California to celebration Dr.Fung’s 90thbirthday with his students,friends and family[1].The team gave me the honor and privilege to be the banquet speaker.I titled my speech as“Dr.Fung:My Respected Mentor and Cherished Friend”-something for those of you who have known Dr.Fung well can“resonate”.Still,I would like to take this opportunity to share with you an excerpt of the story I told about this great gentle man. 展开更多
关键词 Fung:My Respected MENTOR and Cherished FRIEND PROFESSOR yuan Cheng
下载PDF
Study on the Kind and Character of Mongol Hats in Yuan Dynasty
16
作者 贾玺增 《Journal of Donghua University(English Edition)》 EI CAS 2007年第3期427-430,共4页
In the thirteenth century the Mongols created a vast, transcontinental empire that intensified cultural, art, craftwork, garment and commercial contact throughout Eurasia. Hats were so indispensable parts of formal Mo... In the thirteenth century the Mongols created a vast, transcontinental empire that intensified cultural, art, craftwork, garment and commercial contact throughout Eurasia. Hats were so indispensable parts of formal Mongol dress that were seen as a symbol of Mongol traditional garment. Roughly Mongolian men's headgear can be divided into two groups, which are Li and Mao. In addition, Mongolian women's Gu-gu-gwan, a kind of bonnet, was the head-dress for the empress, concubines of the emperor, and wife of high ranking ministers. This study, based on the analysis of image resources and existing evidence, discusses the hats of Yuan period in the context of its group, origin, decoration and cultural influences. 展开更多
关键词 Mongol hats ORNAMENTS yuan Dynasty Nasji Gwgu-gwan
下载PDF
Guan Sheng Yuan (Group) Co. Ltd.
17
作者 Weng Mao Chairman of the Board of Guan Sheng Yuan Enterprise Group Managing Director of Guan Sheng Yuan Group Co. Ltd. 《China's Foreign Trade》 1997年第6期30-31,共2页
Guan Sheng Yuan was founded in 1918. As a famous, time-honoured brand enterprise of China’s national industry, it has a history of about 80 years. Since 1993 when it was re-estab-lished in accordance with the demand ... Guan Sheng Yuan was founded in 1918. As a famous, time-honoured brand enterprise of China’s national industry, it has a history of about 80 years. Since 1993 when it was re-estab-lished in accordance with the demand for the modern enterprise system, the Guan Sheng Yuan (Group) Co. Ltd. 展开更多
关键词 CO HIGH Guan Sheng yuan LTD GROUP
下载PDF
Association analysis datamining the compatibility regulations of Li Dong Yuan's formula of spleen and stomach 被引量:1
18
作者 ChenBo JiangYongguang HuBo LiuJuan 《中医药学刊》 2004年第4期613-615,共3页
Analyzing systemically more than 550 Li Dong Y uan’s formula of spleen and stomach by using the association rule to mine the in formation relativity between formula, herbal medicine and syndrome.From this we can stud... Analyzing systemically more than 550 Li Dong Y uan’s formula of spleen and stomach by using the association rule to mine the in formation relativity between formula, herbal medicine and syndrome.From this we can study better the compatibility regulations of the 展开更多
关键词 脾胃系病证 中医药疗法 相关规则 LI Dong yuan 药-效关系
下载PDF
Yuan Exchange Rate 'Properly Adjusted'
19
《China's Foreign Trade》 2005年第24期45-,共1页
关键词 RATE Properly Adjusted yuan Exchange Rate
下载PDF
Anti-inflammatory and Analgesic Effects of Bi-yuan-ling Granules 被引量:2
20
作者 陈晓冰 苏汉文 +5 位作者 刘环香 尹娴 何峰 任永申 戴康 向梅先 《Journal of Huazhong University of Science and Technology(Medical Sciences)》 SCIE CAS 2016年第3期456-462,共7页
Bi-yuan-ling granule(BLG) is a traditional Chinese medicine compound composed mainly of baicalin and chlorogenic acid. It has been demonstrated to be clinically effective for various inflammatory diseases such as ac... Bi-yuan-ling granule(BLG) is a traditional Chinese medicine compound composed mainly of baicalin and chlorogenic acid. It has been demonstrated to be clinically effective for various inflammatory diseases such as acute rhinitis, chronic rhinitis, atrophic rhinitis and allergic rhinitis. However, the underlying mechanisms of BLG against these diseases are not fully understood. This study aimed to explore the anti-inflammatory and analgesic activities of BLG, and examine its protective effects on mouse acute lung injury(ALI). The hot plate test and acetic acid-induced writhing assay in Kunming mice were adopted to evaluate the pain-relieving effects of BLG. The anti-inflammatory activities of BLG were determined by examining the effects of BLG on xylene-caused ear swelling in Kunming mice, the cotton pellet-induced granuloma in rats, carrageenan-induced hind paw edema and lipopolysaccharide(LPS)-induced acute lung injury(ALI) in mice. The results showed that BLG at 15.5 mg/g could significantly relieve the pain by 82.5%(P〈0.01) at 1 h after thermal stimulation and 91.2%(P〈0.01) at 2 h after thermal stimulation. BLG at doses of 7.75 and 15.5 mg/g reduced the writhing count up to 33.3%(P〈0.05) and 53.4%(P〈0.01), respectively. Additionally, the xylene-induced edema in mice was markedly restrained by BLG at 7.75 mg/g(P〈0.05) and 15.5 mg/g(P〈0.01). BLG at 5.35 and 10.7 mg/g significantly reduced paw edema by 34.8%(P〈0.05) and 37.9%(P〈0.05) at 5 h after carrageenan injection. The granulomatous formation of the cotton pellet was profoundly suppressed by BLG at 2.68, 5.35 and 10.7 mg/g by 15.4%, 38.2%(P〈0.01) and 58.9%(P〈0.001), respectively. BLG also inhibited lung W/D ratio and the release of prostaglandin E2(PGE2) in ALI mice. In addition, the median lethal dose(LD_(50)), median effective dose(ED_(50)) and half maximal inhibitory concentration(IC50) of BLG were found to be 42.7, 3.2 and 12.33 mg/g, respectively. All the findings suggest that BLG has significantly anti-inflammatory and analgesic effects and it may help reduce the damage of ALI. 展开更多
关键词 Bi-yuan-ling granule acute lung injury lipopolysaccharide
下载PDF
上一页 1 2 250 下一页 到第
使用帮助 返回顶部