This study aims to investigate the feasibility of using decoration waste powder(DWP)as a partial replacement for fly ash(FA)in the preparation of geopolymer masonry mortar,and to examine the effect of different DWP re...This study aims to investigate the feasibility of using decoration waste powder(DWP)as a partial replacement for fly ash(FA)in the preparation of geopolymer masonry mortar,and to examine the effect of different DWP replacement rates(0%-40%)on the fresh and mechanical properties of the mortar.The results showed that each group of geopolymer masonry mortar exhibited excellent water retention performance,with a water retention rate of 100%,which was due to the unique geopolymer mortar system and high viscosity of the alkaline activator solution.Compared to the control group,the flowability of the mortar containing lower contents of DWP(10%and 20%)was higher.However,as the DWP replacement rate further increased,the flowability gradually decreased.The DWP could absorb the free water in the reaction system of geopolymer mortar,thereby limiting the occurrence of geopolymerization reaction.The incorporation of DWP in the mortar resulted in a decrease in compressive strength compared to the mortar without DWP.However,even at a replacement rate of 40%,the compressive strength of the mortar still exceeded 15 MPa,which met the requirements of the masonry mortar.It was feasible to use DWP in the geopolymer masonry mortar.Although the addition of DWP caused some performance loss,it did not affect its usability.展开更多
Nests are important structures for birds to raise their offspring and for signaling.Many birds incorporate feathers into the nest,since feathers were traditionally thought to serve the function of insulation.Hypothese...Nests are important structures for birds to raise their offspring and for signaling.Many birds incorporate feathers into the nest,since feathers were traditionally thought to serve the function of insulation.Hypotheses in recent years have considered that some birds place feathers in conspicuous locations in the nest for decoration to trigger a fear response in the competitors.In this study,we investigated whether decorative feathers could deter nest usurpation by Crested Mynas(Acridotheres cristatellus)by manipulating nest box contents.The results revealed that Crested Mynas preferred black feathers to white feathers as decorations and occupied nest boxes decorated with black feathers significantly less than those decorated with white feathers,suggesting that black decorative feathers in the nest could be more effective in preventing nest usurpation by Crested Mynas and that white decorative feathers may have other functions.The black feathers in the nest are prominently placed at the edge of the nest to convey the message that“this nest is occupied”or“the owner of this nest has been preyed upon”to visitor Crested Mynas,thus effectively preventing them from usurping the nest at a later stage.展开更多
The haematopoietic stem cell transplantation(HSCT)ward serves as a temporary residence for patients following their surgical procedures,necessitating adherence to rigorous aseptic standards.However,the current atmosph...The haematopoietic stem cell transplantation(HSCT)ward serves as a temporary residence for patients following their surgical procedures,necessitating adherence to rigorous aseptic standards.However,the current atmosphere within these wards frequently contributes to feelings of depression among patients.Research indicates that a restorative environment has the potential to alleviate negative emotional states in individuals.This study utilized the HSCT ward of Peking University First Hospital as a case study to examine the decorative preferences.This investigation was conducted through a questionnaire that was informed by the patients’inherent preferences and insights derived from research on restorative environments.The results indicated that the incorporation of floral decorations,particularly those resembling sunflowers,in ward corridors,communal activity areas,and walls can significantly enhance patients’sense of hope.Additionally,it is essential to improve the environmental visual experience in the nurses’lounge and demonstration rooms for medical staff.展开更多
With the development of information technology,sharing marketing,as an innovative marketing method,plays an important role in promoting the marketing willingness and enthusiasm of employees in the Internet decoration ...With the development of information technology,sharing marketing,as an innovative marketing method,plays an important role in promoting the marketing willingness and enthusiasm of employees in the Internet decoration industry.Based on the data obtained from the ques-tionnaire survey,this paper makes an empirical analysis of the impact of the economic value,social value,perceived ease of use,perceived convenience,enabling conditions and subjective norms of sharing marketing on the marketing willingness of employees in the Internet decoration industry.The results showed that the questionnaire had good internal consistency and construct validity.Through empirical analysis,it can be found that the economic value,social value,perceived ease of use,perceived convenience,enabling conditions and subjective norms of sharing marketing have a significant positive impact on employees'marketing willingness.展开更多
Temple of the Three Sus,which was first established during the Yuan Dynasty,features a natural,unrestrained,and classically elegant garden architectural style.This paper discusses the multiple characteristics and mean...Temple of the Three Sus,which was first established during the Yuan Dynasty,features a natural,unrestrained,and classically elegant garden architectural style.This paper discusses the multiple characteristics and meanings of traditional architectural decorative patterns at Temple of the Three Sus from a semiotic perspective.First,it analyzes the denotative aspects of these patterns,including their stylistic forms,structural frameworks,and craftsmanship techniques.Second,the paper classifies the traditional architectural decorative patterns of the Temple of the Three Sus based on the types of sources of these patterns and interprets the implied meanings of each.Finally,the paper explores the application of these traditional decorative patterns in modern urban design,specifically in Meishan City,discussing the inheritance and innovation of these patterns in contemporary urban design and emphasizing the importance of integrating tradition with modernity.展开更多
Different types of polymer films were used in the combined in-mold decoration and microcellular injection molding(IMD/MIM)process.The multiphase fluid-solid coupled heat transfer model was established to study the the...Different types of polymer films were used in the combined in-mold decoration and microcellular injection molding(IMD/MIM)process.The multiphase fluid-solid coupled heat transfer model was established to study the thermal response at the melt filling stage in the IMD/MIM process.It was found that the temperature distributed asymmetrically along the thickness direction due to the changed heat transfer coefficient of the melt on the film side.When polyethylene terephthalate(PET)films were applied,the temperature of the melt-film interface increased faster and to be higher at the end of melt filling stage in comparison with the application of polycarbonate(PC)and thermoplastic polyurethane(TPU)films.And the effects of film types on the cellular structure,forming defects and mechanical properties of IMD/MIM parts were also studied experimentally.The results showed that the film types had no obvious effect on the cells size in the transition layer and the mechanical properties of the parts.Under certain film thickness,the offset distance of core layer was the largest with PET film used,while the offset distance was the smallest with TPU film used.And similar results were found for the warpage of the parts.However,an exactly opposite change occurred for the thickness of film-side transition layer and the bubble marks on the surface of the parts.展开更多
Peking Union Medical College was founded in the late Qing Dynasty and the early Republic of China.Since then,society and politics have been rapidly changing,and its architectural aesthetics reflect the idea of advocat...Peking Union Medical College was founded in the late Qing Dynasty and the early Republic of China.Since then,society and politics have been rapidly changing,and its architectural aesthetics reflect the idea of advocating the West and inheriting tradition.Through research and actual investigation,this paper summarizes the current status of its building from two aspects,interior decoration art and interior decoration technology,analyzes the interior decoration characteristics of Peking Union Medical College Phase I Project,and records the archives of Peking Union Medical College’s decoration technology.展开更多
Solid oxide electrolysis cells(SOECs),displaying high current density and energy efficiency,have been proven to be an effective technique to electrochemically reduce CO_(2)into CO.However,the insufficiency of cathode ...Solid oxide electrolysis cells(SOECs),displaying high current density and energy efficiency,have been proven to be an effective technique to electrochemically reduce CO_(2)into CO.However,the insufficiency of cathode activity and stability is a tricky problem to be addressed for SOECs.Hence,it is urgent to develop suitable cathode materials with excellent catalytic activity and stability for further practical application of SOECs.Herein,a reduced perovskite oxide,Pr_(0.35)Sr_(0.6)Fe_(0.7)Cu_(0.2)Mo_(0.1)O_(3-δ)(PSFCM0.35),is developed as SOECs cathode to electrolyze CO_(2).After reduction in 10%H_(2)/Ar,Cu and Fe nanoparticles are exsolved from the PSFCM0.35 lattice,resulting in a phase transformation from cubic perovskite to Ruddlesden-Popper(RP)perovskite with more oxygen vacancies.The exsolved metal nanoparticles are tightly attached to the perovskite substrate and afford more active sites to accelerate CO_(2)adsorption and dissociation on the cathode surface.The significantly strengthened CO_(2)adsorption capacity obtained after reduction is demonstrated by in situ Fourier transform-infrared(FT-IR)spectra.Symmetric cells with the reduced PSFCM0.35(R-PSFCM0.35)electrode exhibit a low polarization resistance of 0.43Ωcm^(2)at 850℃.Single electrolysis cells with the R-PSFCM0.35 cathode display an outstanding current density of 2947 mA cm^(-2)at 850℃and 1.6 V.In addition,the catalytic stability of the R-PSFCM0.35 cathode is also proved by operating at 800℃with an applied constant current density of 600 mA cm^(-2)for 100 h.展开更多
Figurative sculpture and decorative elements belong to the same category of art;the development of sculpture art requires innovation and constant exploration of new development paths,while many characteristics of deco...Figurative sculpture and decorative elements belong to the same category of art;the development of sculpture art requires innovation and constant exploration of new development paths,while many characteristics of decorative elements can give the creation of sculpture works a variety of inspiration.This paper explores the significance of figurative sculpture and decorative elements,examining their intrinsic connections and historical practices.The study aims to uncover the potential of figurative sculpture in the creation of decorative elements,highlighting how the integration of these forms can contribute to the development of art and the creation of meaningful figurative sculptures.展开更多
On the basis of investigation of status of houseplant decoration in modern commercial space,banks,hospitals,hotel hall,dining space,library and office in Suzhou City,the paper analyzed its characters,pointed out their...On the basis of investigation of status of houseplant decoration in modern commercial space,banks,hospitals,hotel hall,dining space,library and office in Suzhou City,the paper analyzed its characters,pointed out their shortcomings and put forward reasonable suggestions.展开更多
From the creation,materials,colors and technical artistic characteristics of exterior and exterior spatial decoration,the artistic value of ancient Huizhou folk houses were analyzed.
Anatase TiO2 nanocrystals and sub-microcrystals with truncated octahedral bipyramidal morphologies were prepared by direct calcination of TiOF2 precursors. The as-prepared TiO2 samples were thoroughly characterized by...Anatase TiO2 nanocrystals and sub-microcrystals with truncated octahedral bipyramidal morphologies were prepared by direct calcination of TiOF2 precursors. The as-prepared TiO2 samples were thoroughly characterized by X-ray diffraction, Raman spectroscopy, field-emission scanning electron microscopy, N2 adsorption-desorption isotherms, X-ray photoelectron spectroscopy, and UV-visible diffuse spectroscopy. It was found that the crystallinity, grain size, and {001}/{101} ratio of the samples can be increased by raising the calcination temperature from 500 to 800℃. The higher crystallinity and {001}/{101} facet ratio resulted in an increase in both aqueous and gas-phase photocatalytic activities, by inhibiting the recombination and separation of electrons and holes. After selecting two TiO2 samples with high crystallinity and {001}/{101} ratio, Au nanoparticles were decorated on their surfaces, and the photocatalytic activity of the resulting samples under visible light illumination was studied. It was found that the visible light-induced photocatalytic activity increased by 2.6 and 4.8 times, respectively, upon Au decoration of the samples prepared by calcination of TiOF2 at 700 and 800℃.展开更多
By interpreting the definition of "soft decoration",this study puts forward that such a decoration way can keep the weaknesses of a house unexposed,highlight the smart designs,re-divide and recombine interio...By interpreting the definition of "soft decoration",this study puts forward that such a decoration way can keep the weaknesses of a house unexposed,highlight the smart designs,re-divide and recombine interior spaces and fill empty spaces,so that deficiencies of hard decoration in a house can be made up,by playing the role of soft decoration in refining interior spaces and improving their functions.Moreover,it is proposed that "devoting less in hard decoration but more in soft decoration" will be a new trend of interior decoration.展开更多
Camouflage is one of the most widespread and powerful strategies that animals use to make detection/recognition more difficult. Many orb-web spiders of the genus Cyclosa add prey remains, plant debris, moults, and/or ...Camouflage is one of the most widespread and powerful strategies that animals use to make detection/recognition more difficult. Many orb-web spiders of the genus Cyclosa add prey remains, plant debris, moults, and/or eggsacs to their webs called web decorations. Web decorations resembling spider body colour pattern have been considered to camouflage the spider from predators. While this camouflage is obvious from a human's perspective, it has rarely been investigated from a predator's perspective. In this study, we tested the visibility of web decorations by calculating chromatic and achromatic contrasts of detritus and eggsae decorations built by Cyclosa octotubereulata, against four different backgrounds viewed by both bird (e.g., blue tits) and hymenopteran (e.g. wasps) predators. We showed that both juvenile and adult spiders on webs with detritus or egg-sac deco- rations were undetectable by both hymenopteran and bird predators over short and long distances. Our results thus suggest that decorating webs with detritus or eggsacs by C octotuberculata may camouflage the spiders from both hymenopteran and bird predators in their common habitats [Current Zoology 56 (3): 379-387, 2010].展开更多
Architectural decoration in Sakya County of post Tibetan area has been included in the treasure house of Tibetan culture and art with its unique charm and characteristics,and it is a wonderful work of Tibetan culture ...Architectural decoration in Sakya County of post Tibetan area has been included in the treasure house of Tibetan culture and art with its unique charm and characteristics,and it is a wonderful work of Tibetan culture and art.Via the research on temple and residential buildings in Sakya County,taking features of architectural decoration as an opportunity,the style characteristics of decoration of temple and residential buildings in Sakya County are explored.Combining knowledge of color theory,application of architectural decoration in residential houses is explored,and characteristics of architectural decoration in Sakya County are analyzed.展开更多
Transition metal nitrides have become the focus of research in sodium ion batteries(SIBs)due to their unique metal properties and high theoretical capacity.However,the low actual capacity is still the main bottleneck ...Transition metal nitrides have become the focus of research in sodium ion batteries(SIBs)due to their unique metal properties and high theoretical capacity.However,the low actual capacity is still the main bottleneck for their application.Herein,using Mo-aniline frameworks as precursors,the carbon encapsulated nitrogen-rich Mo_(x)N is decorated by few-layered MoSe_(2) nanosheets(MoSe_(2)@Mo_(x)N/C-I)after the facile calcinating,selenizing,and nitriding.The carbon encapsulation can effectively strengthen the structural stability of Mo_(x)N.The nitrogen-rich Mo_(x)N and decoration of few-layered MoSe_(2) can create rich heterointerfaces and extra active sites for rapid sodium-ion storage,thus promoting reaction kinetics and improving actual capacity.The MoSe_(2)@Mo_(x)N/C-I as an anode achieves a large reversible capacity of 522.8 mAh g^(-1)at 0.1 A g^(-1),and 254.3 mAh g^(-1)capacity is obtained after 6000 cycles at 5.0 A g^(-1),showing signally improved sodium-ion storage properties.The storage mechanisms and kinetic behaviors are described systematically via the advanced testing techniques and density functional theory(DFT)calculations.It is found that the nitrogen-rich Mo_(x)N as the substrate is the basis of long cycling stability,and the few-layered MoSe_(2) are the key to improving actual capacity.This work indicates that the decoration of few-layered selenides has a broad application prospect in high-performance metal-ion batteries.展开更多
In visual importance, Plato uses Maius' saying: Vision is the most useful source, because if we have not seen the stars, the sun and the sky, then we can not have the language to describe the universe. God invents t...In visual importance, Plato uses Maius' saying: Vision is the most useful source, because if we have not seen the stars, the sun and the sky, then we can not have the language to describe the universe. God invents the vision and finally gives it to me, making us see the process of reason in the heaven. In this paper, the investigated scope is mainly from Yunnan Chuxiong Heijing to Sichuan Panzhihua Yi salad area of Yi culture, using the visual analysis and theory combined method to put forward the argument.展开更多
Investigations were made on the various plant patterns which appeared in the decorations of the two types of gardens, namely private gardens and temple gardens in Yangzhou. Analysis was made of the application of plan...Investigations were made on the various plant patterns which appeared in the decorations of the two types of gardens, namely private gardens and temple gardens in Yangzhou. Analysis was made of the application of plant elements in each location, their implication of the traditional culture, and the relationship between the garden style, theme and artistic conception, aiming to provide a reference for the application of plant culture in the future garden decorations design.展开更多
The back of the mirror is mainly decorated with dragon patterns,in which the head of the dragon is perking up.and the body of the dragon stretches freely.This is the largest ancient copper mirror ever seen.The bronze ...The back of the mirror is mainly decorated with dragon patterns,in which the head of the dragon is perking up.and the body of the dragon stretches freely.This is the largest ancient copper mirror ever seen.The bronze mirror is used to reflect the human image.SO the surface must be bright and fiat.For sucha casting with a large flat surface,it is extremely difficult to control the mirror surface without warpingdeformation.展开更多
The properties of hydrogen storage on graphene with La decoration are investigated using a first-principles plane-wave pseudopotential method based on the density functional theory in this paper. The clustering proble...The properties of hydrogen storage on graphene with La decoration are investigated using a first-principles plane-wave pseudopotential method based on the density functional theory in this paper. The clustering problem of La decorated graphene is considered and B doping can solve it effectively in theory. We obtain the stable geometrical configuration of the modified system and the properties of hydrogen storage are excellent. It can absorb up to 6 H2 molecules with an average adsorption energy range of?–0.529 to –0.655 eV/H2, which meets the ideal range between the physisorbed and chemisorbed states for hydrogen storage. Furthermore, it is proved that the existence of La atom alters the charge distribution of H2 molecules and graphene sheet based on the calculation and analysis about the electronic density of states and charge density difference of the modified system. La atom interacts with hydrogen molecules through Kubas interaction. Thereby, it improves the performance of graphene sheet for hydrogen storage. The modified system exhibits the excellent potential to become one of the most suitable candidates for hydrogen storage medium at near ambient conditions with molecule state.展开更多
基金Funded by the National Natural Science Foundation of China(No.52008046)Young Elite Scientists Sponsorship Program from JSAST(No.TJ-2023-024)Postgraduate Research&Practice Innovation Program of Jiangsu Province(No.KYCX21_2848)。
文摘This study aims to investigate the feasibility of using decoration waste powder(DWP)as a partial replacement for fly ash(FA)in the preparation of geopolymer masonry mortar,and to examine the effect of different DWP replacement rates(0%-40%)on the fresh and mechanical properties of the mortar.The results showed that each group of geopolymer masonry mortar exhibited excellent water retention performance,with a water retention rate of 100%,which was due to the unique geopolymer mortar system and high viscosity of the alkaline activator solution.Compared to the control group,the flowability of the mortar containing lower contents of DWP(10%and 20%)was higher.However,as the DWP replacement rate further increased,the flowability gradually decreased.The DWP could absorb the free water in the reaction system of geopolymer mortar,thereby limiting the occurrence of geopolymerization reaction.The incorporation of DWP in the mortar resulted in a decrease in compressive strength compared to the mortar without DWP.However,even at a replacement rate of 40%,the compressive strength of the mortar still exceeded 15 MPa,which met the requirements of the masonry mortar.It was feasible to use DWP in the geopolymer masonry mortar.Although the addition of DWP caused some performance loss,it did not affect its usability.
基金supported by the National Natural Science Foundation of China(No.31970427 and 32270526 granted to W.L.).
文摘Nests are important structures for birds to raise their offspring and for signaling.Many birds incorporate feathers into the nest,since feathers were traditionally thought to serve the function of insulation.Hypotheses in recent years have considered that some birds place feathers in conspicuous locations in the nest for decoration to trigger a fear response in the competitors.In this study,we investigated whether decorative feathers could deter nest usurpation by Crested Mynas(Acridotheres cristatellus)by manipulating nest box contents.The results revealed that Crested Mynas preferred black feathers to white feathers as decorations and occupied nest boxes decorated with black feathers significantly less than those decorated with white feathers,suggesting that black decorative feathers in the nest could be more effective in preventing nest usurpation by Crested Mynas and that white decorative feathers may have other functions.The black feathers in the nest are prominently placed at the edge of the nest to convey the message that“this nest is occupied”or“the owner of this nest has been preyed upon”to visitor Crested Mynas,thus effectively preventing them from usurping the nest at a later stage.
基金Sponsored by National Natural Science Foundation of China(52278045).
文摘The haematopoietic stem cell transplantation(HSCT)ward serves as a temporary residence for patients following their surgical procedures,necessitating adherence to rigorous aseptic standards.However,the current atmosphere within these wards frequently contributes to feelings of depression among patients.Research indicates that a restorative environment has the potential to alleviate negative emotional states in individuals.This study utilized the HSCT ward of Peking University First Hospital as a case study to examine the decorative preferences.This investigation was conducted through a questionnaire that was informed by the patients’inherent preferences and insights derived from research on restorative environments.The results indicated that the incorporation of floral decorations,particularly those resembling sunflowers,in ward corridors,communal activity areas,and walls can significantly enhance patients’sense of hope.Additionally,it is essential to improve the environmental visual experience in the nurses’lounge and demonstration rooms for medical staff.
文摘With the development of information technology,sharing marketing,as an innovative marketing method,plays an important role in promoting the marketing willingness and enthusiasm of employees in the Internet decoration industry.Based on the data obtained from the ques-tionnaire survey,this paper makes an empirical analysis of the impact of the economic value,social value,perceived ease of use,perceived convenience,enabling conditions and subjective norms of sharing marketing on the marketing willingness of employees in the Internet decoration industry.The results showed that the questionnaire had good internal consistency and construct validity.Through empirical analysis,it can be found that the economic value,social value,perceived ease of use,perceived convenience,enabling conditions and subjective norms of sharing marketing have a significant positive impact on employees'marketing willingness.
文摘Temple of the Three Sus,which was first established during the Yuan Dynasty,features a natural,unrestrained,and classically elegant garden architectural style.This paper discusses the multiple characteristics and meanings of traditional architectural decorative patterns at Temple of the Three Sus from a semiotic perspective.First,it analyzes the denotative aspects of these patterns,including their stylistic forms,structural frameworks,and craftsmanship techniques.Second,the paper classifies the traditional architectural decorative patterns of the Temple of the Three Sus based on the types of sources of these patterns and interprets the implied meanings of each.Finally,the paper explores the application of these traditional decorative patterns in modern urban design,specifically in Meishan City,discussing the inheritance and innovation of these patterns in contemporary urban design and emphasizing the importance of integrating tradition with modernity.
基金financially supported by the National Natural Science Foundation of China(Nos.51801141 and 51605356)the 111 Project(No.B17034)+1 种基金the Innovative Research Team Development Program of Ministry of Education of China(No.IRT17R83)the Fundamental Research Funds for the Central Universities(No.WUT:2017IVB035)。
文摘Different types of polymer films were used in the combined in-mold decoration and microcellular injection molding(IMD/MIM)process.The multiphase fluid-solid coupled heat transfer model was established to study the thermal response at the melt filling stage in the IMD/MIM process.It was found that the temperature distributed asymmetrically along the thickness direction due to the changed heat transfer coefficient of the melt on the film side.When polyethylene terephthalate(PET)films were applied,the temperature of the melt-film interface increased faster and to be higher at the end of melt filling stage in comparison with the application of polycarbonate(PC)and thermoplastic polyurethane(TPU)films.And the effects of film types on the cellular structure,forming defects and mechanical properties of IMD/MIM parts were also studied experimentally.The results showed that the film types had no obvious effect on the cells size in the transition layer and the mechanical properties of the parts.Under certain film thickness,the offset distance of core layer was the largest with PET film used,while the offset distance was the smallest with TPU film used.And similar results were found for the warpage of the parts.However,an exactly opposite change occurred for the thickness of film-side transition layer and the bubble marks on the surface of the parts.
基金National Key R&D Program“Science and Technology Winter Olympics”(Grant Number:2020YFF0304900).
文摘Peking Union Medical College was founded in the late Qing Dynasty and the early Republic of China.Since then,society and politics have been rapidly changing,and its architectural aesthetics reflect the idea of advocating the West and inheriting tradition.Through research and actual investigation,this paper summarizes the current status of its building from two aspects,interior decoration art and interior decoration technology,analyzes the interior decoration characteristics of Peking Union Medical College Phase I Project,and records the archives of Peking Union Medical College’s decoration technology.
基金supported by the National Natural Science Foundation of China(No.22278203,No.22279057)the support of the Inner Mongolia major science and technology project(2021ZD0042),Development of integrated technology for CO_(2)emission reduction in electric power metallurgy industry
文摘Solid oxide electrolysis cells(SOECs),displaying high current density and energy efficiency,have been proven to be an effective technique to electrochemically reduce CO_(2)into CO.However,the insufficiency of cathode activity and stability is a tricky problem to be addressed for SOECs.Hence,it is urgent to develop suitable cathode materials with excellent catalytic activity and stability for further practical application of SOECs.Herein,a reduced perovskite oxide,Pr_(0.35)Sr_(0.6)Fe_(0.7)Cu_(0.2)Mo_(0.1)O_(3-δ)(PSFCM0.35),is developed as SOECs cathode to electrolyze CO_(2).After reduction in 10%H_(2)/Ar,Cu and Fe nanoparticles are exsolved from the PSFCM0.35 lattice,resulting in a phase transformation from cubic perovskite to Ruddlesden-Popper(RP)perovskite with more oxygen vacancies.The exsolved metal nanoparticles are tightly attached to the perovskite substrate and afford more active sites to accelerate CO_(2)adsorption and dissociation on the cathode surface.The significantly strengthened CO_(2)adsorption capacity obtained after reduction is demonstrated by in situ Fourier transform-infrared(FT-IR)spectra.Symmetric cells with the reduced PSFCM0.35(R-PSFCM0.35)electrode exhibit a low polarization resistance of 0.43Ωcm^(2)at 850℃.Single electrolysis cells with the R-PSFCM0.35 cathode display an outstanding current density of 2947 mA cm^(-2)at 850℃and 1.6 V.In addition,the catalytic stability of the R-PSFCM0.35 cathode is also proved by operating at 800℃with an applied constant current density of 600 mA cm^(-2)for 100 h.
文摘Figurative sculpture and decorative elements belong to the same category of art;the development of sculpture art requires innovation and constant exploration of new development paths,while many characteristics of decorative elements can give the creation of sculpture works a variety of inspiration.This paper explores the significance of figurative sculpture and decorative elements,examining their intrinsic connections and historical practices.The study aims to uncover the potential of figurative sculpture in the creation of decorative elements,highlighting how the integration of these forms can contribute to the development of art and the creation of meaningful figurative sculptures.
文摘On the basis of investigation of status of houseplant decoration in modern commercial space,banks,hospitals,hotel hall,dining space,library and office in Suzhou City,the paper analyzed its characters,pointed out their shortcomings and put forward reasonable suggestions.
文摘From the creation,materials,colors and technical artistic characteristics of exterior and exterior spatial decoration,the artistic value of ancient Huizhou folk houses were analyzed.
基金supported by the National Natural Science Foundation of China(51772230,51461135004)the Hubei Foreign Science and Technology Cooperation Project(2017AHB059)the Japan Society for the Promotion of Science(JSPS)for an Invitational Fellowship for Foreign Researchers(L16531)~~
文摘Anatase TiO2 nanocrystals and sub-microcrystals with truncated octahedral bipyramidal morphologies were prepared by direct calcination of TiOF2 precursors. The as-prepared TiO2 samples were thoroughly characterized by X-ray diffraction, Raman spectroscopy, field-emission scanning electron microscopy, N2 adsorption-desorption isotherms, X-ray photoelectron spectroscopy, and UV-visible diffuse spectroscopy. It was found that the crystallinity, grain size, and {001}/{101} ratio of the samples can be increased by raising the calcination temperature from 500 to 800℃. The higher crystallinity and {001}/{101} facet ratio resulted in an increase in both aqueous and gas-phase photocatalytic activities, by inhibiting the recombination and separation of electrons and holes. After selecting two TiO2 samples with high crystallinity and {001}/{101} ratio, Au nanoparticles were decorated on their surfaces, and the photocatalytic activity of the resulting samples under visible light illumination was studied. It was found that the visible light-induced photocatalytic activity increased by 2.6 and 4.8 times, respectively, upon Au decoration of the samples prepared by calcination of TiOF2 at 700 and 800℃.
文摘By interpreting the definition of "soft decoration",this study puts forward that such a decoration way can keep the weaknesses of a house unexposed,highlight the smart designs,re-divide and recombine interior spaces and fill empty spaces,so that deficiencies of hard decoration in a house can be made up,by playing the role of soft decoration in refining interior spaces and improving their functions.Moreover,it is proposed that "devoting less in hard decoration but more in soft decoration" will be a new trend of interior decoration.
基金supported by a grant from NSFC (30770332)The Ministry of Education (MOE) Academic Research Fund (AcRF)(R-154-000-335-112)
文摘Camouflage is one of the most widespread and powerful strategies that animals use to make detection/recognition more difficult. Many orb-web spiders of the genus Cyclosa add prey remains, plant debris, moults, and/or eggsacs to their webs called web decorations. Web decorations resembling spider body colour pattern have been considered to camouflage the spider from predators. While this camouflage is obvious from a human's perspective, it has rarely been investigated from a predator's perspective. In this study, we tested the visibility of web decorations by calculating chromatic and achromatic contrasts of detritus and eggsae decorations built by Cyclosa octotubereulata, against four different backgrounds viewed by both bird (e.g., blue tits) and hymenopteran (e.g. wasps) predators. We showed that both juvenile and adult spiders on webs with detritus or egg-sac deco- rations were undetectable by both hymenopteran and bird predators over short and long distances. Our results thus suggest that decorating webs with detritus or eggsacs by C octotuberculata may camouflage the spiders from both hymenopteran and bird predators in their common habitats [Current Zoology 56 (3): 379-387, 2010].
基金Tibet Project of Youth Fund for Humanities and Social Sciences Research,Ministry of Education(19XZJC840001)Natural Fund of Science and Technology Department of Tibet Autonomous Region-Joint Fund of Department and School(XZ2019ZRG-64)+1 种基金Special Funds for Local Universities Supported by the Central Government in 2019-Construction of Landscape Specialty(502219017)Construction Project for Innovation Team of Forestry Discipline of Tibet Agricultural and Animal Husbandry University.
文摘Architectural decoration in Sakya County of post Tibetan area has been included in the treasure house of Tibetan culture and art with its unique charm and characteristics,and it is a wonderful work of Tibetan culture and art.Via the research on temple and residential buildings in Sakya County,taking features of architectural decoration as an opportunity,the style characteristics of decoration of temple and residential buildings in Sakya County are explored.Combining knowledge of color theory,application of architectural decoration in residential houses is explored,and characteristics of architectural decoration in Sakya County are analyzed.
基金supported by the National Natural Science Foundation of China(52171207,51762021)the Natural Science Foundation of Jiangxi province(20212BAB204031,20192ACB21009)。
文摘Transition metal nitrides have become the focus of research in sodium ion batteries(SIBs)due to their unique metal properties and high theoretical capacity.However,the low actual capacity is still the main bottleneck for their application.Herein,using Mo-aniline frameworks as precursors,the carbon encapsulated nitrogen-rich Mo_(x)N is decorated by few-layered MoSe_(2) nanosheets(MoSe_(2)@Mo_(x)N/C-I)after the facile calcinating,selenizing,and nitriding.The carbon encapsulation can effectively strengthen the structural stability of Mo_(x)N.The nitrogen-rich Mo_(x)N and decoration of few-layered MoSe_(2) can create rich heterointerfaces and extra active sites for rapid sodium-ion storage,thus promoting reaction kinetics and improving actual capacity.The MoSe_(2)@Mo_(x)N/C-I as an anode achieves a large reversible capacity of 522.8 mAh g^(-1)at 0.1 A g^(-1),and 254.3 mAh g^(-1)capacity is obtained after 6000 cycles at 5.0 A g^(-1),showing signally improved sodium-ion storage properties.The storage mechanisms and kinetic behaviors are described systematically via the advanced testing techniques and density functional theory(DFT)calculations.It is found that the nitrogen-rich Mo_(x)N as the substrate is the basis of long cycling stability,and the few-layered MoSe_(2) are the key to improving actual capacity.This work indicates that the decoration of few-layered selenides has a broad application prospect in high-performance metal-ion batteries.
文摘In visual importance, Plato uses Maius' saying: Vision is the most useful source, because if we have not seen the stars, the sun and the sky, then we can not have the language to describe the universe. God invents the vision and finally gives it to me, making us see the process of reason in the heaven. In this paper, the investigated scope is mainly from Yunnan Chuxiong Heijing to Sichuan Panzhihua Yi salad area of Yi culture, using the visual analysis and theory combined method to put forward the argument.
基金Sponsored by Higher Education Teaching Reform Research Project in Jiangsu Province(2017JSJG302)2017 Dominant Profession Construction Project in Yangzhou Polytechnic University(ZDPPZY04)
文摘Investigations were made on the various plant patterns which appeared in the decorations of the two types of gardens, namely private gardens and temple gardens in Yangzhou. Analysis was made of the application of plant elements in each location, their implication of the traditional culture, and the relationship between the garden style, theme and artistic conception, aiming to provide a reference for the application of plant culture in the future garden decorations design.
文摘The back of the mirror is mainly decorated with dragon patterns,in which the head of the dragon is perking up.and the body of the dragon stretches freely.This is the largest ancient copper mirror ever seen.The bronze mirror is used to reflect the human image.SO the surface must be bright and fiat.For sucha casting with a large flat surface,it is extremely difficult to control the mirror surface without warpingdeformation.
文摘The properties of hydrogen storage on graphene with La decoration are investigated using a first-principles plane-wave pseudopotential method based on the density functional theory in this paper. The clustering problem of La decorated graphene is considered and B doping can solve it effectively in theory. We obtain the stable geometrical configuration of the modified system and the properties of hydrogen storage are excellent. It can absorb up to 6 H2 molecules with an average adsorption energy range of?–0.529 to –0.655 eV/H2, which meets the ideal range between the physisorbed and chemisorbed states for hydrogen storage. Furthermore, it is proved that the existence of La atom alters the charge distribution of H2 molecules and graphene sheet based on the calculation and analysis about the electronic density of states and charge density difference of the modified system. La atom interacts with hydrogen molecules through Kubas interaction. Thereby, it improves the performance of graphene sheet for hydrogen storage. The modified system exhibits the excellent potential to become one of the most suitable candidates for hydrogen storage medium at near ambient conditions with molecule state.