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S-scheme heterojunction/Schottky junction tandem synergistic effect promotes visible-light-driven catalytic activity

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Nano Research 2023年第2期16卷 2152-2162页

作者： Shuai Wang Xin Du Changhao yao yifeng Cai Huiyuan Ma Baojiang Jiang Jun Ma School of Material Science and Chemical Engineering Harbin University of Science and TechnologyHarbin 150040China State Key Laboratory of Urban Water Resource and Environment School of EnvironmentHarbin Institute of TechnologyHarbin 150090China Department of Food and Environment Engineering East University of HeilongjiangHarbin 150066China Key Laboratory of Functional Inorganic Material Chemistry Ministry of Education of the People’s Republic of ChinaHeilongjiang UniversityHarbin 150080China

Designing photocatalysts with high light utilization and efficient photogenerated carrier separation for pollutant degradation is one of the important topics for sustainable development.In this study,hierarchical core–shell materialα-Fe_(2)O_(3)@ZnIn_(2)S_(4)with a step-scheme(S-scheme)heterojunction is synthesized by in situ growth technique,and MXene Ti_(3)C_(2)quantum dots(QDs)are introduced to construct a double-heterojunction tandem mechanism.The photodegradation efficiency ofα-Fe_(2)O_(3)@ZnIn_(2)S_(4)/Ti_(3)C_(2)QDs to bisphenol A is 96.1%and its reaction rate constant attained 0.02595 min^(−1),which is 12.3 times that of pureα-Fe_(2)O_(3).Meanwhile,a series of characterizations analyze the reasons for the enhanced photocatalytic activity,and the charge transport path of the S-scheme heterojunction/Schottky junction tandem is investigated.The construction of the S-scheme heterojunction enables the photo-generated electrons ofα-Fe_(2)O_(3)and the holes of ZnIn2S4 to transfer and combine under the action of the reverse built-in electric field.Due to the metallic conductivity of Ti_(3)C_(2)QDs,the photogenerated electrons of ZnIn_(2)S_(4)are further transferred to Ti_(3)C_(2)QDs to form a Schottky junction,which in turn forms a double-heterojunction tandem mechanism,showing a remarkable charge separation efficiency.This work provides a new opinion for the construction of tandem double heterojunctions to degrade harmful pollutants.

关键词： α-Fe_(2)O_(3) ZnIn2S4 MXene Ti_(3)C_(2)quantum dots(QDs) step-scheme heterojunction Schottky junction bisphenol A

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探索北京古都多尺度地理空间

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现代城市研究 2022年第1期37卷 69-73页

作者：姚亦锋南京师范大学地理科学学院

北京在中国历史上多次成为都城,其依托的"地理空间"对于其起源和变迁有重要的影响作用。论文研究地理空间的脉络结构及其对于历史时期城市的重要影响作用,认知历史城市景观系统,明晰地理景观文物价值。以多尺度空间方法辨析地理与城市... 详细信息

北京在中国历史上多次成为都城,其依托的"地理空间"对于其起源和变迁有重要的影响作用。论文研究地理空间的脉络结构及其对于历史时期城市的重要影响作用,认知历史城市景观系统,明晰地理景观文物价值。以多尺度空间方法辨析地理与城市格局之间相互内在关联,探寻现存山脉河流之中的城市历史景观格局、时空演替和变化轨迹,揭示其城市空间结构有序化演进规律,并且延伸思路研究历史城市风貌保护规划。以地理学视角在大尺度空间范围内研究北京古都空间分布规律和内在演变机理,以及人地关系传统的耦合过程,进而探索古都风貌规划新的途径和方法。

关键词：北京古都格局地理空间多尺度城市景观

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Natural traps of spores and pollen grains from the region surrounding Wenbi Reservoir, Yunnan, China

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科学通报 2013年第S1期58卷 162-168页

作者： SONG XiaoYan BERA Subir YAO YiFeng BLACKMORE Stephen LI ChengSen State Key Laboratory of Systematic and Evolutionary Botany Institute of BotanyChinese Academy of Sciences Shanxi Agricultural University Department of Botany University of Calcutta Royal Botanic Garden Edinburgh

We did a comparative analysis of pollen and spores from five kinds of natural pollen traps at Wenbi Reservoir, northwest Yunnan, China. The natural traps were the surface soil, ground inhabiting mosses, spider webs, tree bark and moss/lichen on trees. These traps showed qualitative and quantitative variations in the pollen and spore spectra. The palynomorphs recovered from the soil samples of trees and shrubs ranged from 90.54% to 95.98% of the total counts. These counts were higher than counts from ground mosses(53.13%–81.66%), spider webs(61.71%), bark samples(53.8%) and moss/lichen on trees(50%–53.6%). The result of pollen/spore analysis showed that surface soil, ground mosses and spider webs better reflect the local vegetation compared with tree bark or moss/lichen on trees.

关键词： natural pollen traps Wenbi Reservoir Yunnan China vegetation

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Complex spatial patterns delay the discovery and location of food by rodents

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Integrative Zoology 2020年第4期15卷 307-313页

作者： Shiqiang ZHANG Meilin ZHU Huixia ZHANG Nannan yao Yingying WANG yifeng ZHANG Zhenlong WANG School of Life Sciences Zhengzhou UniversityGaoxin DistrictZhengzhouHenan ProvinceChina College of Basic Medical Sciences Zhengzhou UniversityGaoxin DistrictZhengzhouHenan ProvinceChina State-owned Yugong Forest Farm JiyuanHenan ProvinceChina

Spatial patterns in heterogeneity are generally deemed a central causal factor influencing the physiology and behavior of animals in ecological systems.However,knowledge remains limited about how such patterns influence food discovery by animals.We inferred that spatial heterogeneity plays a key role in animal food discovery and location.To prove this inference,we tested food locating parameters by 2 rodent species,Apodemus agrarius and Lasiopodomys brandtii,in different heterogeneous environments.Our results showed that spatial heterogeneity significantly influenced the food locating time of rodents,with food locating time increasing with increasing spatial heterogeneity.Furthermore,spatial heterogeneity significantly influenced invalid excavations(digging in the wrong place).Finally,spatial heterogeneity significantly influenced the frequency that heterogeneous objects were explored.Supporting our inference,our results indicate that spatial heterogeneity significantly influences the foraging behavior of animals.Consequently,increased spatial heterogeneity will impair the food locating success of rodents.We believe that this work will broaden our understanding of plant–animal interactions.

关键词： food locating invalid excavation rodents spatial heterogeneity

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探索构建乡村“画意”审美空间

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城市规划 2019年第11期43卷 120-127页

作者：姚亦锋南京师范大学地理学院

乡村景观审美的深层次观念是人地关系,而非表层的“好看”,深刻地联系着人类可持续发展方向.中国传统乡村与山水画意境同脉同源,乡村审美空间有对应山水画的特质、结构和哲学目标,具有含蓄淡雅的美学风格,历史源远流长.本文以山水画作... 详细信息

乡村景观审美的深层次观念是人地关系,而非表层的“好看”,深刻地联系着人类可持续发展方向.中国传统乡村与山水画意境同脉同源,乡村审美空间有对应山水画的特质、结构和哲学目标,具有含蓄淡雅的美学风格,历史源远流长.本文以山水画作为基点审视乡村景观的诗意栖居结构体系,分析乡村审美多尺度空间的关系以及脉络过程.现代中国大规模快速城市化发展,许多乡村传统的审美空间面临解构和重构,传统人文理念丧失.中国山水画是探索乡村审美传统以及现代空间构建的重要途径,希望以艺术的视角规划实现地区人类与自然景观的和谐,保持可持续发展的深远运行.

关键词：传统乡村山水画审美空间景观格局人地关系

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东吴之前南京古城起源的地理过程

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城市规划 2019年第2期43卷 91-98页

作者：姚亦锋南京师范大学地理学院

地理选址是城市建设的首要研究问题,以多尺度地理空间的视角探寻南京城市起源以及早期雏形,从而可以发现城市历史空间的运行轨迹以及更深入的可持续发展途径。南京区域环境有其独立的地理围合空间。公元229年东吴孙权选址定都,而在此之... 详细信息

地理选址是城市建设的首要研究问题,以多尺度地理空间的视角探寻南京城市起源以及早期雏形,从而可以发现城市历史空间的运行轨迹以及更深入的可持续发展途径。南京区域环境有其独立的地理围合空间。公元229年东吴孙权选址定都,而在此之前南京已经有1000多年的人居活动过程。新石器时期有村落沿河流分布聚集,春秋战国陆续有军事城堡,秦汉时期有县邑,各个帝王视角位置不同,但对这一带战略要地的重要作用是共识的。现代城市景观纷繁多样,掩饰了其最重要的地理本质,探索早期城市起源形态清晰可辨其受地理空间影响作用。以地理空间的视角辨析区域分异格局、时空演变过程、人地关系耦合,可以在更广阔范围和深度把握南京古都风貌的机理和深刻本质。

关键词：南京长江影响地理空间多尺度城市景观

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A novel mutation of glycogen synthase kinase-3β leads to a reduced level of GSK3βprotein in a patient with dilated cardiomyopathy

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Genes & Diseases 2024年第1期11卷 84-86页

作者： Ke Gong Zhiping Tan Haidan Liu Xiaobo Liao Xinmin Zhou Bangliang Yin Shi Zeng yao yao yifeng Yang Li Xie Department of Cardiovascular Surgery The Second Xiangya Hospital of Central South UniversityCentral South UniversityChangshaHunan410011China Department of Ultrasound The Second Xiangya Hospital of Central South UniversityCentral South UniversityChangshaHunan 410011China Department of Blood Transfusion The Second Xiangya Hospital of Central South UniversityCentral South UniversityChangshaHunan 410011China

Dilated cardiomyopathy(DCM)is a frequently inherited heart condition.A familial transmission rate of 20%-35%has been documented,and most of these cases are autosomal dominant.This condition has a high rate of morbidit... 详细信息

关键词： GSK3β cardiomyopathy mortality

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Efficacy of phytogenic extracts on growth performance and health of tilapia (Oreochromis niloticus × O. aureus)

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Aquaculture and Fisheries 2022年第4期7卷 411-419页

作者： Lumpan Poolsawat yifeng Yu Xiaoqin Li Xu Zhen Wenxiang yao Pu Wang Congyan Luo Xiangjun Leng National Demonstration Centre for Experimental Fisheries Science Education Shanghai Ocean UniversityShanghai201306China Centre for Research on Environmental Ecology and Fish Nutrition(CREEFN)of the Ministry of Agriculture Shanghai Ocean UniversityShanghai201306China Shanghai Collaborative Innovation Centre for Aquatic Animal Genetics and Breeding Shanghai201306China Zhengchang Feed Science and Technology Co.Ltd. Liyang213300China

The present study was conducted to evaluate the efficacy of phytogenic extract on growth and health of tilapia.Three experimental diets were designed as the basal diet(Con)and phytogenic extract(Flourishing,F)supplemented diets at 0.5 and 1 g/kg inclusion(F-1 and F-2),which the phytogenic additive was extracted from Eucommia ulmoides,Astragalus membranaceus,Lonicera japonica and Codonopsis pilosula.The three diets were fed to juvenile tilapia(14.0±0.1 g)with 30 fish per cage,and three replicate cages from the three groups were placed in one indoor concrete pool(a total of three pools were used).After 8 weeks of feeding,the weight gain was significantly increased,and feed conversion ratio was decreased in F-2 group(P<0.05)when compared to the control.Both levels of phytogenic extract significantly promoted the retentions of protein and lipid and the apparent digestibility coefficient of dry matter and protein(P<0.05).The activity of superoxide dismutase and the levels of white blood cells,haemoglobin and glutamic pyruvic transaminase were also significantly increased by the supplementation of phytogenic extract(P<0.05).The villus height in anterior intestine was significantly enhanced in F-1 and F-2 groups(P<0.05).After challenging with Aeromonas hydrophila,the cumulative mortality was significantly declined in F-1 and F-2 groups(P<0.05).In summary,the dietary supplementation of phytogenic extract at 1 g/kg feed could provide positive efficiency on growth,nutrient utilization,immunity,gut morphology and disease resistance of tilapia under the present conditions.

关键词： Phytogenic extract Tilapia Growth Immune response Intestinal histology Microbiota

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Pollen morphology in Saxifraga(Saxifragaceae) from Ny-Alesund, Svalbard, Arctic, and its taxonomic significance

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Advances in Polar Science 2014年第2期25卷 105-112页

作者： YAO YiFeng Bera Subir Ferguson David Kay LI Chengsen State Key Laboratory of Systematic and Evolutionary Botany Institute of Botany Chinese Academy of Sciences Department of Botany University of Calcutta Department of Paleontology University of Vienna

Pollen morphology of eight species of Saxifraga, i.e.S, cespitosa, S. oppositifolia, S. cernua, S. nivalis, S. aizoides, S. rivularis, S. hieraciifolia, and S. hirculus, collected from Ny-Alesund, Svalbard, Arctic was examined using light and scanning electron microscopy. Pollen grains of Saxifraga species are subprolate or prolate, 3-colpate, 15.4-44.4 μm in the polar axis, 11.4 34.6 μm in the equatorial axis, and show a P/E ratio 1.19-1.40. On the basis of exine ornamentation, four pollen types, viz., the S. oppositifolia type （striate without scabrae on the muff）, S. cernua type （striate with scabrae on the muri）, S. nivalis type （microreticulate and operculum absent）, and S. cespitosa type （microechinate and operculum present）, were recognized. Hierarchical cluster analysis of the pollen morphological characters indicated that pollen morphology supports the infrageneric classification of the genus Saxifraga.

关键词： Arctic Ny-Alesund pollen morphology Saxifraga Svalbard

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Multimodal collaborative BCI system based on the improved CSP feature extraction algorithm

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Virtual Reality & Intelligent Hardware 2022年第1期4卷 22-37页

作者： Cunbo LI Ning LI Yuan QIU Yueheng PENG yifeng WANG Lili DENG Teng MA Fali LI Dezhong yao Peng XU The Clinical Hospital of Chengdu Brain Science Institute MOE Key Lab for Neuroinformation and School of Life Science and TechnologyUniversity of Electronic Science and Technology of ChinaChengdu 610054China School of Intelligent Engineering Zhengzhou University of AeronauticsZhengzhou 450015China

Background As a novel approach for people to directly communicate with an external device,the study of brain-computer interfaces(BCIs)has become well-rounded.However,similar to the real-world scenario,where individuals are expected to work in groups,the BCI systems should be able to replicate group attributes.Methods We proposed a 4-order cumulants feature extraction method(CUM4-CSP)based on the common spatial patterns(CSP)algorithm.Simulation experiments conducted using motion visual evoked potentials(mVEP)EEG data verified the robustness of the proposed algorithm.In addition,to freely choose paradigms,we adopted the mVEP and steady-state visual evoked potential(SSVEP)paradigms and designed a multimodal collaborative BCI system based on the proposed CUM4-CSP algorithm.The feasibility of the proposed multimodal collaborative system framework was demonstrated using a multiplayer game controlling system that simultaneously facilitates the coordination and competitive control of two users on external devices.To verify the robustness of the proposed scheme,we recruited 30 subjects to conduct online game control experiments,and the results were statistically analyzed.Results The simulation results prove that the proposed CUM4-CSP algorithm has good noise immunity.The online experimental results indicate that the subjects could reliably perform the game confrontation operation with the selected BCI paradigm.Conclusions The proposed CUM4-CSP algorithm can effectively extract features from EEG data in a noisy environment.Additionally,the proposed scheme may provide a new solution for EEG-based group BCI research.

关键词： Collaborative brain-computer interface(BCI) Motion visual evoked potentials(mVEP) Steady-state visual evoked potential(SSVEP) Game controlling system

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