Four kinds of Au nanorods（NRs）with different aspect ratios are designed to adjust the relationship between resonance energy level of longitudinal（L）and transverse（T）modes.During the femto-second Z-scan experimen...Four kinds of Au nanorods（NRs）with different aspect ratios are designed to adjust the relationship between resonance energy level of longitudinal（L）and transverse（T）modes.During the femto-second Z-scan experiments,huge saturable absorption phenomena are observed while the energy level T is located between one to two times of the energylevel L.This means that the energy may transfer between longitudinal and transverse energylevels in the same and/or different Au NRs.It effectively depresses the production of revised saturated absorption and increases the saturable absorption efficiency.This method is significant for the preparation of high-efficiency saturable absorption devices.展开更多
Sentences will be either fuzzy or accurate.If every element in a sentence is distinct and precise,this sentence is the accurate sentence.Fuzzy sentences emerged because of the economic principle of language.People wan...Sentences will be either fuzzy or accurate.If every element in a sentence is distinct and precise,this sentence is the accurate sentence.Fuzzy sentences emerged because of the economic principle of language.People want to express an utterance with vivid words and fewer words.They use some words or sentences,which can describe entities economically according to their habit.Apart from that,the classification of things existed in real world can be conceived as a mental process,it caused the category A and Non-A have no clear-cut boundary.All these reasons lead to the fuzziness in language,not only in written but also in communication words.In this paper,four basic functions of fuzzy sentences in some literary works will be analyzed as well as the boundary of these sentences to let readers know the enchantment of fuzzy linguistics.展开更多
Exquisite and ancient Luang Prabang is the capital city of Luang Prabang Province in northern Laos. The city is situated at the meeting of the Nam Khan and the Mekong rivers in an area of less than 10 square kilometer...Exquisite and ancient Luang Prabang is the capital city of Luang Prabang Province in northern Laos. The city is situated at the meeting of the Nam Khan and the Mekong rivers in an area of less than 10 square kilometers on the left bank of the Mekong River. It has a flat terrain and is surrounded by mountains and rivers.展开更多
THE Tibet Autonomous Regionis situated on Chine’s south-westem border southwest fo theQinghai-Tibet Plateau.It has a vastterritory and high and steep topogra-phy,and has long been known as the"Roof of the World....THE Tibet Autonomous Regionis situated on Chine’s south-westem border southwest fo theQinghai-Tibet Plateau.It has a vastterritory and high and steep topogra-phy,and has long been known as the"Roof of the World."Depending onthe topography,Tibet can be dividedinto three different natural geographi-cal regions:the westem Tibetan Pla-teau,the southem Tibet valley and theeastem Tibetan gorge.Tibet is China’s least populous re-gion.According to the fourth nation-wide census of 1990,Tibet had a展开更多
A 33-member performing group from Zhejiang Acrobatic Troupe went to the U.S.A on May 6, 2006. During their 11-day trip, they at- tended“06 Zhejiang Week”in New York,“Zhejiang Cultral Week”in Los Angeles and“Asia ...A 33-member performing group from Zhejiang Acrobatic Troupe went to the U.S.A on May 6, 2006. During their 11-day trip, they at- tended“06 Zhejiang Week”in New York,“Zhejiang Cultral Week”in Los Angeles and“Asia Arts Festival”展开更多
TIRED of the hustle and bustle of the metropolis, citydwellers share a common dream - to take a well-earned holiday in a peaceful place. Sanya, the onlypalm beach resort city in China, with its blue sky,
WHEN Sammia Du took her first step on stage in a Cairo five-star hotel, the public looked a bit ambivalent. Her Asian features were unlike those of any other Egyptian belly dancers who performed that night, But as she...WHEN Sammia Du took her first step on stage in a Cairo five-star hotel, the public looked a bit ambivalent. Her Asian features were unlike those of any other Egyptian belly dancers who performed that night, But as she closed her eyes and began to ripple to the rhythm of the drums, the young Chinese dancer was quick to dispel any doubts.展开更多
High-performance Nd2Fei4B magnets have been widely required in various fields recently due to the lightweight and miniaturization of devices.In this work,we synthesize Nd2Fei4B nanostructures with tunable magnetic pro...High-performance Nd2Fei4B magnets have been widely required in various fields recently due to the lightweight and miniaturization of devices.In this work,we synthesize Nd2Fei4B nanostructures with tunable magnetic properties through surfactant-assisted high energy ball milling(SAHEBM)process,achieving prominently enhanced coercivity by forming non-magnetic layers as grain boundary phase.When the reduction annealing process was carried out as pellet with Ca,the coercivity increased from 0.8 kOe to over 3 kOe as Nd2Fei4B powder,which is proved to be the contribution of the chemical diffusion of Nd elements and the formation of Nd-rich layer as magnetic insulating medium.In addition,two-dimensional graphene oxide(GO)was employed to build extra grain boundary,by which the coercivity of the core@dual-shell structure can achieve up to 8 kOe,tenfold of the original sample.The intrinsic mechanism indicated that the Nd-diffusion induced Nd-rich phase along with the reduced GO in the system could form non-magnetic layer as grain boundary and magnetically isolate the adjacent grains,significantly enhancing the exchange coupling effect.This work markedly opens up an effective approach for the chemical preparation of high-performance Nd2Fe14B nanostructured magnets,especially after post treatment,and gives an insight on the interactions at nanoscale.展开更多
Together with pillars and roof, the bracket set is one of the most fundamental structural components of traditional timber-frame architecture in China. Not only structurally indispensable, it was also emblematic of sp...Together with pillars and roof, the bracket set is one of the most fundamental structural components of traditional timber-frame architecture in China. Not only structurally indispensable, it was also emblematic of specific building styles developed through history. Entering the modem era, however, its architectural validity was overturned by the use of modem technology and building materials, rendering brackets merely a visual and decorative motif. This paper contends that it was precisely when the bracket set lost its structural significance that it began to be discussed in ways that endowed it with layers of cultural meaning in the context of modem China. Examining its modem appropriations in materials other than wood throughout the twentieth century, the paper explores shifting meanings of brackets in their continuous transmutations from a reminder of a defunct component in the building tradition to a nostalgic sign for an irretrievable architectural past.展开更多
Chinese belly dance enthusiasts reignite the popularity of the ancient Egyptian tradition When Sammia Du took her first step on stage in a Cairo five-star hotel,the public looked a bit ambivalent.Her Asian features we...Chinese belly dance enthusiasts reignite the popularity of the ancient Egyptian tradition When Sammia Du took her first step on stage in a Cairo five-star hotel,the public looked a bit ambivalent.Her Asian features were unlike those of any other Egyptian belly dancers who展开更多
基金Supported by the National Natural Science Foundation of China under Grant Nos 11404410 and 11504105the Hunan Provincial Natural Science Foundation under Grant No 2016JJ3140
文摘Four kinds of Au nanorods（NRs）with different aspect ratios are designed to adjust the relationship between resonance energy level of longitudinal（L）and transverse（T）modes.During the femto-second Z-scan experiments,huge saturable absorption phenomena are observed while the energy level T is located between one to two times of the energylevel L.This means that the energy may transfer between longitudinal and transverse energylevels in the same and/or different Au NRs.It effectively depresses the production of revised saturated absorption and increases the saturable absorption efficiency.This method is significant for the preparation of high-efficiency saturable absorption devices.
文摘Sentences will be either fuzzy or accurate.If every element in a sentence is distinct and precise,this sentence is the accurate sentence.Fuzzy sentences emerged because of the economic principle of language.People want to express an utterance with vivid words and fewer words.They use some words or sentences,which can describe entities economically according to their habit.Apart from that,the classification of things existed in real world can be conceived as a mental process,it caused the category A and Non-A have no clear-cut boundary.All these reasons lead to the fuzziness in language,not only in written but also in communication words.In this paper,four basic functions of fuzzy sentences in some literary works will be analyzed as well as the boundary of these sentences to let readers know the enchantment of fuzzy linguistics.
文摘Exquisite and ancient Luang Prabang is the capital city of Luang Prabang Province in northern Laos. The city is situated at the meeting of the Nam Khan and the Mekong rivers in an area of less than 10 square kilometers on the left bank of the Mekong River. It has a flat terrain and is surrounded by mountains and rivers.
文摘THE Tibet Autonomous Regionis situated on Chine’s south-westem border southwest fo theQinghai-Tibet Plateau.It has a vastterritory and high and steep topogra-phy,and has long been known as the"Roof of the World."Depending onthe topography,Tibet can be dividedinto three different natural geographi-cal regions:the westem Tibetan Pla-teau,the southem Tibet valley and theeastem Tibetan gorge.Tibet is China’s least populous re-gion.According to the fourth nation-wide census of 1990,Tibet had a
文摘A 33-member performing group from Zhejiang Acrobatic Troupe went to the U.S.A on May 6, 2006. During their 11-day trip, they at- tended“06 Zhejiang Week”in New York,“Zhejiang Cultral Week”in Los Angeles and“Asia Arts Festival”
文摘TIRED of the hustle and bustle of the metropolis, citydwellers share a common dream - to take a well-earned holiday in a peaceful place. Sanya, the onlypalm beach resort city in China, with its blue sky,
文摘WHEN Sammia Du took her first step on stage in a Cairo five-star hotel, the public looked a bit ambivalent. Her Asian features were unlike those of any other Egyptian belly dancers who performed that night, But as she closed her eyes and began to ripple to the rhythm of the drums, the young Chinese dancer was quick to dispel any doubts.
基金This work was supported by the National Natural Science Foundation of China(Nos.51590882,51631001,51672010),and the National Key R&D Program of China(No.2017YFA0206301).
文摘High-performance Nd2Fei4B magnets have been widely required in various fields recently due to the lightweight and miniaturization of devices.In this work,we synthesize Nd2Fei4B nanostructures with tunable magnetic properties through surfactant-assisted high energy ball milling(SAHEBM)process,achieving prominently enhanced coercivity by forming non-magnetic layers as grain boundary phase.When the reduction annealing process was carried out as pellet with Ca,the coercivity increased from 0.8 kOe to over 3 kOe as Nd2Fei4B powder,which is proved to be the contribution of the chemical diffusion of Nd elements and the formation of Nd-rich layer as magnetic insulating medium.In addition,two-dimensional graphene oxide(GO)was employed to build extra grain boundary,by which the coercivity of the core@dual-shell structure can achieve up to 8 kOe,tenfold of the original sample.The intrinsic mechanism indicated that the Nd-diffusion induced Nd-rich phase along with the reduced GO in the system could form non-magnetic layer as grain boundary and magnetically isolate the adjacent grains,significantly enhancing the exchange coupling effect.This work markedly opens up an effective approach for the chemical preparation of high-performance Nd2Fe14B nanostructured magnets,especially after post treatment,and gives an insight on the interactions at nanoscale.
文摘Together with pillars and roof, the bracket set is one of the most fundamental structural components of traditional timber-frame architecture in China. Not only structurally indispensable, it was also emblematic of specific building styles developed through history. Entering the modem era, however, its architectural validity was overturned by the use of modem technology and building materials, rendering brackets merely a visual and decorative motif. This paper contends that it was precisely when the bracket set lost its structural significance that it began to be discussed in ways that endowed it with layers of cultural meaning in the context of modem China. Examining its modem appropriations in materials other than wood throughout the twentieth century, the paper explores shifting meanings of brackets in their continuous transmutations from a reminder of a defunct component in the building tradition to a nostalgic sign for an irretrievable architectural past.
文摘Chinese belly dance enthusiasts reignite the popularity of the ancient Egyptian tradition When Sammia Du took her first step on stage in a Cairo five-star hotel,the public looked a bit ambivalent.Her Asian features were unlike those of any other Egyptian belly dancers who
