期刊文献+
共找到1,709篇文章
< 1 2 86 >
每页显示 20 50 100
利用Breath Figure法制备具有Honeycomb结构的有机/无机复合膜 被引量:6
1
作者 申延明 吴静 +4 位作者 卢欣 唐杨军 刘丹 李长龙 李天舒 《高等学校化学学报》 SCIE EI CAS CSCD 北大核心 2009年第7期1464-1468,共5页
以聚苯乙烯和正硅酸乙酯的有机溶液为铸膜溶液,利用Breath Figure法制备了PS/SiO2 Honeycomb结构复合膜.采用SEM对复合膜进行了形貌分析,探讨了聚合物浓度、PS/TEOS配比、聚合物的结构、溶剂等对膜Honeycomb结构的影响.研究结果表明,聚... 以聚苯乙烯和正硅酸乙酯的有机溶液为铸膜溶液,利用Breath Figure法制备了PS/SiO2 Honeycomb结构复合膜.采用SEM对复合膜进行了形貌分析,探讨了聚合物浓度、PS/TEOS配比、聚合物的结构、溶剂等对膜Honeycomb结构的影响.研究结果表明,聚合物浓度在20~50mg/mL,PS/TEOS质量比大于2∶1的条件下可以制备结构完整的多孔膜,且制备的Honeycomb结构在0.8cm2内无缺陷;采用双羧基封端的聚苯乙烯成膜效果好于单羧基封端的成膜效果;以氯仿和苯作为溶剂均可以制备完全Honeycomb结构的复合膜,但以苯为溶剂制备的多孔膜孔径较大.成膜中TEOS水解不完全,复合膜中混杂着未完全水解的TEOS以及SiO2.EDS面扫描分析表明,Si和O均匀地分散在复合膜中. 展开更多
关键词 BREATH figure 水辅助法 有序多孔膜 Honeycomb结构 有机/无机复合膜
下载PDF
Breath Figure法制备聚碳酸酯(PC)蜂窝状多孔膜 被引量:3
2
作者 刘瑞来 刘俊劭 刘海清 《高分子材料科学与工程》 EI CAS CSCD 北大核心 2013年第3期133-136,共4页
以单组分聚碳酸酯(PC)为膜材质,在一定的湿度环境下,利用Breath Figure法在玻璃基板上成功制备了蜂窝状孔结构的聚碳酸酯多孔膜。研究了溶剂、溶液浓度和湿度对所成多孔膜结构和形貌的影响。实验结果表明,采用二氯甲烷为溶剂所制得的孔... 以单组分聚碳酸酯(PC)为膜材质,在一定的湿度环境下,利用Breath Figure法在玻璃基板上成功制备了蜂窝状孔结构的聚碳酸酯多孔膜。研究了溶剂、溶液浓度和湿度对所成多孔膜结构和形貌的影响。实验结果表明,采用二氯甲烷为溶剂所制得的孔结构规整,排列均匀紧密,孔径大小为(3.30±0.19)μm,而以三氯甲烷为溶剂只能得到孔径大小不均且无紧密排列的孔。环境湿度从43%增加到91%,孔径大小由(2.28±0.63)μm增加到(9.07±1.42)μm,且湿度与孔大小基本上呈现一阶线性关系,通过理论推导得出直线斜率为0.15μm/%,即在此体系中湿度每增加1%,所形成的孔大小增加0.15μm。 展开更多
关键词 聚碳酸酯 BREATH figure 蜂窝孔
下载PDF
汉语名词短语及存现句语序的“Ground-to-Figure”假说 被引量:1
3
作者 郑晓行 《现代语文(下旬.语言研究)》 2015年第8期57-62,共6页
20世纪以来的汉语语序研究虽然取得了不少成果,但仍需要全面、系统和深入的研究。从"以运用为基础"的认知语言学研究范式来看,汉语句法结构通过概念隐喻在汉语使用者的日常空间思维的基础上生成,因此,汉语名词短语:"……... 20世纪以来的汉语语序研究虽然取得了不少成果,但仍需要全面、系统和深入的研究。从"以运用为基础"的认知语言学研究范式来看,汉语句法结构通过概念隐喻在汉语使用者的日常空间思维的基础上生成,因此,汉语名词短语:"……>名词整体(背景)>名词部分(图形)>……""……>名词大(背景)>名词小(图形)>……""……>名词空间/时间(背景)>名词对象(图形)>……"和存现句"……(NPloc/time)……(V)……(NP)……"等语序在汉语使用者的"Ground-to-Figure"的认知过程的基础上生成。在此基础上提出的汉语名词短语及存现句的"Ground-to-Figure"假说是一条汉语语序生成的重要机制,但不是唯一机制。 展开更多
关键词 汉语名词短语 存现句 语序 Ground—to—figure
下载PDF
The Translation of Figures in Interpretation
4
作者 杨莹 《海外英语》 2011年第12X期209-211,共3页
Figure has always been a "bottleneck" of high-quality interpretation. This paper attempts a theoretical analysis of the main causes of the bottleneck and discusses the skill of interpreting figures. It also ... Figure has always been a "bottleneck" of high-quality interpretation. This paper attempts a theoretical analysis of the main causes of the bottleneck and discusses the skill of interpreting figures. It also sums up intensively various forms related to interpreting figures for interpreters to achieve a high-quality interpretation. 展开更多
关键词 INTERPRETATION figure SKILLS of INTERPRETING figureS
下载PDF
Illustrations and figures in RESEARCH ARTICLES
5
《Journal of Medical Colleges of PLA(China)》 CAS 2015年第1期55-59,共5页
Introduction This page provides general information for authors creating figures to maximize the quality of those illustrations and to prepare artwork for submission to BioMed Central journals.Guidelines on specific t... Introduction This page provides general information for authors creating figures to maximize the quality of those illustrations and to prepare artwork for submission to BioMed Central journals.Guidelines on specific types of figures,and on supported file formats are also available.BioMed Central encourages authors to use figures where this will increase the clarity of an article.The use of colour figures in articles is free of charge. 展开更多
关键词 figureS SUBMISSION maximize submit prepare colour figure elsewhere HOLDER GRAPHICS
原文传递
Research on the Drawing-up of the Pole Figure for Orientation Analysis of Directional Si Steel Sheet
6
作者 S.H. O (Kim Chaek University of Technology, Kyogu Dong, Central District, Pyongyang, D.P.R. of Korea) 《Journal of Materials Science & Technology》 SCIE EI CAS CSCD 2000年第2期159-160,共2页
The magnetic property of soft magnetic metals and alloys depends strongly on the crystallographic orientation. In automated equipment for orientation research, the intensity for drawing up the pole figure is measured ... The magnetic property of soft magnetic metals and alloys depends strongly on the crystallographic orientation. In automated equipment for orientation research, the intensity for drawing up the pole figure is measured in detail. The present research shows that the accurate pole figure can be drawn up without measuring concretely the intensity. For directional Si steel sheet the measuring step may be 4-5 degrees. In this paper the experimental equation for defocusing correction was derived from the experimental data in different specimens with random orientation. 展开更多
关键词 figure Research on the Drawing-up of the Pole figure for Orientation Analysis of Directional Si Steel Sheet SI
下载PDF
FIGURES
7
《China's Foreign Trade》 2014年第2期2-5,共4页
7.6%The China Acad emy of Sciences fore cast 7.6 percent fo annual GDP growth this year,according to its report released.80m The nation added approximately 80 million mobile Internet users in 2013 and more than 80 per... 7.6%The China Acad emy of Sciences fore cast 7.6 percent fo annual GDP growth this year,according to its report released.80m The nation added approximately 80 million mobile Internet users in 2013 and more than 80 percent of Chinese netizens are using smartphones to log onto the World Wide Web,said the China Internet Network Information Center. 展开更多
关键词 RELEASED USERS MAINLAND PRELIMINARY figureS figure
下载PDF
Common Figures of Speech in the English Language
8
作者 Yin Shi-zhen 《湖南人文科技学院学报》 1985年第2期95-104,共10页
A Figure of speech is a deviation from the ordinary use of words with aview to increasing their effect,Thus we can say,'Bring the mainstay here',We can also say,'Her son is her mainstay.'Here'mains... A Figure of speech is a deviation from the ordinary use of words with aview to increasing their effect,Thus we can say,'Bring the mainstay here',We can also say,'Her son is her mainstay.'Here'mainstay'is used in afiguratine or non-literal sense and signifies'chief support'. Figures of speech are classified under three main heads.The mostimportant kinds of figures are given under each head for reference. 展开更多
关键词 deviation classified literal figureS ordinary GENTLE METAPHOR figure rock BURIED
下载PDF
The figures of speech in Song of Solomon
9
作者 张伟 《神州》 2014年第17期29-29,共1页
The Song of Solomon is a series of love poems which contain 6 pieces of love poems and most part in the form of songs addressed by a man to a woman, and by the woman to the man, in order to express the love between th... The Song of Solomon is a series of love poems which contain 6 pieces of love poems and most part in the form of songs addressed by a man to a woman, and by the woman to the man, in order to express the love between them.Figures of speech are ways of making our language figurative. They can be divided into three parts, they are syntactical, semantic and phonetic rhetorical devices. These rhetorical devices can help us to heighten effect and to make the writing figuratively and vividly.These figures of speech used in the Song of Solomon make great contribution to the success description of these long songs.This essay will center on the figures of speech in the Song of Solomon. 展开更多
关键词 SOLOMON RHETORICAL figureS PHONETIC SENTENCE semantic writing pieces PARALLELISM beauty
下载PDF
Peking Opera Figure Sculpture:An Emerging Design Art
10
《China & The World Cultural Exchange》 2002年第6期4-6,共3页
As I entered Original Workshop located in Wuqing Development Zone in Tianjin, a coastal city adjacent to Beijing, I was immediately impressed by vivid Peking opera figure sculptures exhibited on the display stand. 60 ... As I entered Original Workshop located in Wuqing Development Zone in Tianjin, a coastal city adjacent to Beijing, I was immediately impressed by vivid Peking opera figure sculptures exhibited on the display stand. 60 extremely lifelike figure sculptures depicting classic roles in Peking opera unfolded before me the history of Peking opera in a graphic, realistic manner. 展开更多
关键词 figure In DESIGN Peking Opera figure Sculpture:An Emerging Design Art
下载PDF
Breath Figures法制备漆酚铜聚合物多孔膜 被引量:1
11
作者 罗震 徐艳莲 林金火 《功能材料》 EI CAS CSCD 北大核心 2012年第1期69-72,共4页
以漆酚铜聚合物(UCP)有机溶液为铸膜液,采用Breath Figures法制备漆酚铜聚合物多孔膜,探讨了溶剂、环境相对湿度和潮湿气体流速等因素对多孔膜形貌的影响,并使用红外光谱和扫描电镜等进行表征。结果表明,以二硫化碳为溶剂,在静态(潮湿... 以漆酚铜聚合物(UCP)有机溶液为铸膜液,采用Breath Figures法制备漆酚铜聚合物多孔膜,探讨了溶剂、环境相对湿度和潮湿气体流速等因素对多孔膜形貌的影响,并使用红外光谱和扫描电镜等进行表征。结果表明,以二硫化碳为溶剂,在静态(潮湿气体流速为0mL/min,湿度为95%)或动态(潮湿气体流速为400mL/min,湿度为85%)时,均可制得孔分布均匀、孔型规整、优良耐热性和耐酸碱性的疏水性UCP多孔膜,其平均孔径分别为1.5和0.85μm。 展开更多
关键词 漆酚铜聚合物 多孔膜 BREATH figures法
下载PDF
Breath Figure法制备漆酚铁聚合物微米图案的研究 被引量:1
12
作者 金遥 彭嬖琛 +2 位作者 冯丽霞 罗震 徐艳莲 《中国生漆》 2012年第1期6-8,50,共4页
以漆酚铁聚合物(UFP)为基材,采用BreathFigure法制备UFP多孔膜和UFP微球。用扫描电镜观察其形貌,并研究(1)静态和动态的高湿环境下,浓度对UFP多孔膜形貌的影响;(2)聚合物浓度和温度等对UFP微球形貌的影响。结果表明,当环境湿度为85%、... 以漆酚铁聚合物(UFP)为基材,采用BreathFigure法制备UFP多孔膜和UFP微球。用扫描电镜观察其形貌,并研究(1)静态和动态的高湿环境下,浓度对UFP多孔膜形貌的影响;(2)聚合物浓度和温度等对UFP微球形貌的影响。结果表明,当环境湿度为85%、潮湿气体流速为400mL/min、聚合物浓度为50.0mg/mL,多孔膜的孔呈圆形且分布均匀。当UFP/二氯甲烷浓度为50.0mg/mL、气氛为甲醇及进样量为10.0μL时,所得的微球的形貌较好。在实验范围内,UFP溶液浓度越大,所制得的UFP多孔膜和微球的形貌越规整。 展开更多
关键词 漆酚铁聚合物 BREATH figure 多孔膜 微球
下载PDF
Different Frequency Synchronization Theory and Its Frequency Measurement Practice Teaching Innovation Based on Lissajous Figure Method 被引量:1
13
作者 Xin Geng Songlin Li +2 位作者 Guangming Huang Baoqiang Du Jianhua Chen 《Journal of Beijing Institute of Technology》 EI CAS 2018年第2期198-205,共8页
According to the requirement of multi-parameter time and frequency measurement without frequency normalization,a different frequency synchronization theory is proposed based on Lissajous figure method and the variatio... According to the requirement of multi-parameter time and frequency measurement without frequency normalization,a different frequency synchronization theory is proposed based on Lissajous figure method and the variation lawof Lissajous figure which are used in practice teaching of frequency measurement. The theory can achieve high-precision transmission and comparison of time and frequency and precise locking and tracking of phase and frequency,improve the level of scientific research on time and frequency for postgraduate,and promote practice teaching innovation of time frequency measurement for undergraduate. Utilizing the ratio of horizontal and vertical inflection point of the Lissajous figure,the nominal frequency of the measured signal is precisely calculated.The frequency deviation between the measured frequency and its nominal frequency can be obtained by combining the turning cycle of the Lissajous figure. By observing the phase relationship between the frequency standard signal and the measured signal,the accurate measurement of the frequency is implemented. Experimental results showthat the direct measurement and comparison better than the 10-11 order of magnitude with common frequency source can be finished between any signal frequencies.The frequency measurement method based on the theory has the advantage of simple operation,quick measurement speed,small error,lownoise and high measurement precision. It plays an important role in time synchronization,communications,metrology,scientific research,educational technology practice and equipment and other fields. 展开更多
关键词 Lissajous figure different frequency synchronization frequency measurement
下载PDF
The Possibility of Semantic Features and Analysis of Figures of Speech —— Cognitive Figures and Expressive Figures 被引量:2
14
作者 Liu Dawei Wang Zhiguang 《宏观语言学》 2007年第1期10-24,共15页
In this paper, linguistic methodology is suggested for approaching figures of speech formed due to shift of cognitive relations. First, requisite features, possible features and impossible features are proposed on the... In this paper, linguistic methodology is suggested for approaching figures of speech formed due to shift of cognitive relations. First, requisite features, possible features and impossible features are proposed on the basis of semantic analysis and their interrelationships and expressions are discussed. Then it is further argued that all figures formed due to shift of cognitive relation are expressed to accept an impossible feature; and there are four semantic forms to accept it: “zero distance/distanced”, “implicit/explicit”, “direct/indirect”, “positive/negative”. Finally, starting from the two approaches to figures we comment on the traditional idea of separating decoration and substance and the new idea of “function as form”. 展开更多
关键词 figureS of SPEECH requisite FEATURES POSSIBLE FEATURES impossible FEATURES COGNITIVE expressive
下载PDF
Figure of Merit Analysis of a Hybrid Solar-geothermal Power Plant 被引量:1
15
作者 Cheng Zhou Elham Doroodchi Behdad Moghtaderi 《Engineering(科研)》 2013年第1期26-31,共6页
Figure of merit analysis is a general methodology used to evaluate whether a hybrid power plant could produce more power than two stand-alone power plants. In this paper, the assessment methodology using figure of mer... Figure of merit analysis is a general methodology used to evaluate whether a hybrid power plant could produce more power than two stand-alone power plants. In this paper, the assessment methodology using figure of merit analysis was re-examined for a hybrid solar-geothermal power plant. A new definition of the figure of merit was introduced specifically for a solar boosted geothermal plant to include both the technical and economic factors. The new definition was then applied in a case study of a hypothetical demonstration hybrid solar-geothermal power plant in Australia. The power plant was considered to have a typical net power output of 2.2 MW with a solar energy fraction of 27%. The analysis was performed to compare the power output and capital cost of the hybrid plant with the state-of-the-art (SoA) and existing stand-alone solar and geothermal plants. Based on the new definition, the hybrid plant was found to generally outperform the two existing stand-alone plants. Moreover, at an ambient temperature of 5 °C, the hybrid plant was found to outperform the SoA stand-alone plants when the geothermal temperature was greater than 150 °C. For geothermal temperature of 180 °C on the other hand, the hybrid plant outperformed the SoA stand-alone plants at ambient temperatures lower than 33 °C. 展开更多
关键词 figure of MERIT HYBRID RENEWABLE energy system SOLAR GEOTHERMAL Power generation
下载PDF
浅谈Figure软件在电台总控系统的应用 被引量:1
16
作者 黄战营 《中国有线电视》 2021年第1期56-59,共4页
主要介绍Figure板卡在电台总控系统的应用,以及通过专业软件对板卡进行配置,以满足不同的需求。
关键词 figure 监听 板卡配置 李萨茹图
下载PDF
The Employment of Figures of Speech in English Advertisement
17
作者 徐彩霞 《海外英语》 2012年第5X期264-265,共2页
Figure of speech is a fixed language expression formed on the basis of phonology,vocabulary and grammar.With its brief flexi ble approach,It not only displays rich and colorful details,deep and complicated emotions,bu... Figure of speech is a fixed language expression formed on the basis of phonology,vocabulary and grammar.With its brief flexi ble approach,It not only displays rich and colorful details,deep and complicated emotions,but also reveals the complex relationship be tween man and society,as well as man and the nature.In advertisement English,Figure of speech also plays an important role and increas ingly turns to be one of the most widely used means in the advertising industry. 展开更多
关键词 figureS of SPEECH ENGLISH ADVERTISEMENT
下载PDF
ODF Determination from One Complete Pole Figure
18
作者 蒋君祥 王福 +2 位作者 刘燕声 王沿东 梁志德 《Rare Metals》 SCIE EI CAS CSCD 1996年第3期233-237,共5页
ODFDeterminationfromOneCompletePoleFigureJiangJunxiang;WangFu;LiuYansheng;WangYandongandLiangZhide(蒋君祥)(王福)(... ODFDeterminationfromOneCompletePoleFigureJiangJunxiang;WangFu;LiuYansheng;WangYandongandLiangZhide(蒋君祥)(王福)(刘燕声)(王沿东)(梁志德)(De... 展开更多
关键词 Maximum ENTROPY method ODF POLE figure AL-LI alloy
下载PDF
CONSTRUCTING COMPLETE POLE FIGURE FROM AN INCOMPLETE ONE
19
作者 ZUO Liang XU Jiazhen LIANG Zhide Northeast University of Technology,shenyang,China 《Acta Metallurgica Sinica(English Letters)》 SCIE EI CAS CSCD 1989年第12期441-443,共3页
An analytical procedure for rapidly and quantitatively constructing complete pole figures ofcubic materials,based on the fundamental equations of the vector method.has been presented.Here.an incompletely measured pole... An analytical procedure for rapidly and quantitatively constructing complete pole figures ofcubic materials,based on the fundamental equations of the vector method.has been presented.Here.an incompletely measured pole figure can be completed by using its measured data asconstraint conditions.It also allows the derivation of any other pole figures. 展开更多
关键词 POLE figure VECTOR method
下载PDF
A Feminism Analysis of the Spiritual Journey of Female Figures in Little Women 被引量:1
20
作者 郝明 《海外英语》 2016年第15期177-179,共3页
Louisa May Alcott is an excellent American female writer of the 19th century as well as a feminist who focuses on women and their problems.Little Women,her best known novel,is about four girls' daily lives.Through... Louisa May Alcott is an excellent American female writer of the 19th century as well as a feminist who focuses on women and their problems.Little Women,her best known novel,is about four girls' daily lives.Through description of their life,Alcott disclosed the discrimination and persecution the patriarchy society of the 19th century forced on women and pointed out a road for women to fight against the patriarchy society.The thesis demonstrated Alcott's feminism viewpoint and its embodiment in Little Women through analysis of the novel's plot and the character of the four heroines. 展开更多
关键词 FEMINISM Little Women Louisa May Alcott PATRIARCHY female figures
下载PDF
上一页 1 2 86 下一页 到第
使用帮助 返回顶部