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An inorganic liquid crystalline dispersion with 2D ferroelectric moieties

National Science Review 2024年第5期11卷 254-263页

作者： Ziyang Huang Zehao Zhang Rongjie Zhang Baofu Ding Liu Yang Keyou Wu Youan Xu Gaokuo Zhong Chuanlai Ren Jiarong Liu Yugan Hao Menghao Wu Teng Ma Bilu Liu Shenzhen Graphene Centre Shenzhen Key Laboratory of Advanced Layered Materials for Value-added ApplicationsTsinghua-Berkeley Shenzhen Institute and Institute of Materials ResearchTsinghua Shenzhen International Graduate School Tsinghua University Institute of Technology for Carbon Neutrality Faculty of Materials Science and Engineering Shenzhen Institute of Advanced Technology Chinese Academy of Sciences School of Physics and Institute for Quantum Science and Engineering School of Chemistry and Institute of Theoretical ChemistryHuazhong University of Science and Technology Xi'an Research Institute of High Technology Shenzhen Institute of Advanced Technology Chinese Academy of Sciences Department of Applied Physics Hong Kong Polytechnic University

Electro-optical effect-based liquid crystal devices have been extensively used in optical modulation techniques, in which the Kerr coefficient reflects the sensitivity of the liquid crystals and determines the strength of the device's operational electric field. The Peterlin–Stuart theory and the O'Konski model jointly indicate that a giant Kerr coefficient could be obtained in a material with both a large geometrical anisotropy and an intrinsic polarization, but such a material is not yet reported. Here we reveal a ferroelectric effect in a monolayer two-dimensional mineral vermiculite. A large geometrical anisotropy factor and a large inherent electric dipole together raise the record value of Kerr coefficient by an order of magnitude, till 3.0 × 10-4mV-2. This finding enables an ultra-low operational electric field of10～2–10～4V m-1and the fabrication of electro-optical devices with an inch-level electrode separation, which has not previously been practical. Because of its high ultraviolet stability（decay <1% under ultraviolet exposure for 1000 hours）, large-scale production, and energy efficiency, prototypical displayable billboards have been fabricated for outdoor interactive scenes. This work provides new insights for both liquid crystal optics and two-dimensional ferroelectrics.

关键词： 2D materials layered minerals vermiculite ferroelectric inorganic liquid crystal Kerr coefficient

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Tuning the selectivity of CO_(2)conversion to CO on partially reduced Cu_(2)O/ZnO heterogeneous interface

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Interdisciplinary Materials 2024年第3期3卷 380-388页

作者： Tianci Xiang Ting Liu Ting Ouyang Shenlong Zhao Zhao-Qing Liu School of Chemistry and Chemical Engineering/Institute of Clean Energy and Materials/Guangzhou Key Laboratory for Clean Energy and Materials/Huangpu Hydrogen innovation Center Guangzhou Higher Education Mega CenterGuangzhou UniversityGuangzhouGuangdongPeople's Republic of China School of Chemical and Biomolecular Engineering The University of SydneySydneyNew South WalesAustralia

The development of stable and efficient low-cost electrocatalysts is conducive to the industrialization of CO_(2).The synergy effect between the heterogeneous interface of metal/oxide can promote the conversion of CO_(2).In this work,Cu_(2)O/ZnO heterostructures with partially reduced metal/oxide heterointerfaces in Zn plates(CZZ)have been synthesized for CO_(2)electroreduction in different cationic solutions(K^(+)and Cs^(+)).Physical characterizations were used to demonstrate the heterojunction of Cu_(2)O/ZnO and the heterointerfaces of metal/oxide,electrochemical tests were used to illustrate the enhancement of the selectivity of CO_(2)to CO in different cationic *** efficiency for CO with CZZ as catalyst reaches 70.9%in K+solution(current density for CO−3.77 mA cm^(−2)and stability 24 h),and the Faraday efficiency for CO is 55.2%in Cs^(+)solution(−2.47 mA cm^(−2)and 21 h).In addition,in situ techniques are used to elucidate possible reaction mechanisms for the conversion of CO_(2)to CO in K^(+)and Cs^(+)solutions.

关键词： CO CO_(2)reduction electrochemical catalysis heterogeneous interface

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High-quality Development Path of graduate education in Aquaculture Discipline:A Case Study of guangdong Ocean University

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Asian Agricultural Research 2024年第9期16卷 41-44页

作者： Huanying PANG Miao XIE Shuanghu CAI Yucong HUANG Jichang JIAN College of Fisheries Guangdong Ocean UniversityZhanjiang 524088China National Experimental Teaching Demonstration Center for Aquatic Science and Technology Zhanjiang 524088China

Aquaculture is a discipline system that focuses on exploring the growth,development,reproduction,aquaculture,and resources of aquatic animals and plants,and their complex *** the tide of the"high-quality development"strategy,the aquaculture discipline is also facing new opportunities and challenges for transformation,upgrading,and deepening ***,exploring and practicing an effective path for the high-quality development of graduate education in aquaculture is not only the key to promoting the transformation of graduate education in aquaculture from scale expansion to quality improvement,but also has immeasurable value for implementing the strategy on developing a quality workforce and the strategy of scientific and technological *** high-quality development of graduate education in aquaculture can be promoted from the following aspects:optimizing and improving the construction of the graduate education system,focusing on enhancing the quality of high-level talent cultivation,strengthening the overall strength of the graduate supervisor team,actively promoting the adjustment and upgrading of the disciplinary and professional structure,strengthening the construction of resource platforms and deepening the implementation of collaborative education mechanisms,and continuously expanding and deepening the new pattern of international exchange and *** the comprehensive promotion of the above paths,the aim is to fully build a model for the improvement and governance of graduate education quality.

关键词： Aquaculture graduate education High-quality development

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Teaching Reform of Veterinary Microbiology Based on the Hybrid Teaching of Ideology and Politics

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Journal of Contemporary educational Research 2024年第8期8卷 302-310页

作者： Jiedan Liao College of Animal Science and Technology Foshan UniversityFoshan 528225Guangdong ProvinceChina

The veterinary microbiology teaching team thoroughly implements the national education policy,and iteratively promotes the implementation of the teaching reform of Sanquan *** teaching team is focused on a“student-centered”approach to education,emphasizing the foundation of“cultivating people and nurturing the root and soul of the nation.”By integrating“knowledge exploration,skill training,and value shaping”into the talent training plan,they are reshaping curriculum objectives and emphasizing ideological education in the *** teaching content system is being reconstructed,combining multiple interactions of blended teaching with the“six-in-one”ideological education model,to achieve the educational goals of the new agricultural“in-class-extracurricular”*** effort provides an empirical basis for the ideological and political teaching reform of the veterinary microbiology curriculum.

关键词： Veterinary microbiology Ideological and political teaching educational reform

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Bioengineering Downstream Technology Online Open Course Drives SPOC Hybrid Teaching Reform Based on Ideological and Political education

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Journal of Contemporary educational Research 2024年第9期8卷 17-24页

作者： Jiedan Liao School of Animal Science and Technology Foshan UniversityFoshan 528225Guangdong ProvinceChina

In the context of emerging engineering disciplines,a hybrid teaching reform for the Bioengineering Downstream Technology course,based on ideological and political education and online open courses,is being carried *** reform focuses on aspects such as“building a professional teacher team for ideological and political education,scientifically designing the ideological and political teaching system,innovating classroom teaching methods,and improving both formative and summative evaluation systems.”The“Craftsmanship in education and Cultivating Soul and Roots”small private online course hybrid teaching reform for the Bioengineering Downstream Technology online open course provides a replicable model for the comprehensive implementation of ideological and political education in engineering courses and offers a reference for advancing ideological and political education and hybrid teaching reform in new engineering disciplines.

关键词： Bioengineering Downstream Technology Ideological and political Online open course Hybrid teaching

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Hybrid Teaching Reform of Veterinary Microbiology Based on the Combination of Virtual Simulation and Problem-Based Learning

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Journal of Contemporary educational Research 2024年第9期8卷 1-9页

作者： Jiedan Liao School of Life Science and Engineering Foshan UniversityFoshan 528225Guangdong ProvinceChina

The Veterinary Microbiology course is centered around the diagnosis and testing of pathogenic microorganisms,with the core value of“moral education and character development.”It reconstructs multidimensional teaching resources by integrating disciplinary achievements with clinical cases and implements a hybrid teaching approach combining virtual simulation and problem-based learning(PBL)through the“three stages+four models+three reflections”***-qualification teachers employ various teaching methods,create a“six-in-one”model for ideological and political education,and conduct formative assessments based on the principles of diversified objectives and process *** hybrid teaching reform addresses issues such as fragmented knowledge,insufficient class hours,weak animal disease diagnostic abilities among students,limited application and expansion of knowledge points,and students’lack of proactive critical thinking *** application of hybrid teaching has shown significant advantages and effectiveness,providing a reference for teaching reform in similar microbiology courses.

关键词： Veterinary Microbiology Hybrid teaching Virtual simulation Problem-based learning Teaching reform

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Isolation and Experimental Study on Bacteriostasis of Bacillus haynesii

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Journal of Clinical and Nursing Research 2024年第7期8卷 219-227页

作者： Jiedan Liao Mengbo Yu Jiaming Li Zhiheng Xie Wanjun Gu Shuzhen Zhou Yi Ma College of Animal Science and Technology Foshan UniversityFoshan 528225Guangdong ProvinceChina Foshan City Nanhai Eastern Along Pharmaceutical Co. LtdFoshan 528234Guangdong ProvinceChina Department of Veterinary Medicine College of Coastal Agricultural SciencesGuangdong Ocean UniversityZhanjiang 524088Guangdong ProvinceChina

This experiment aims to isolate and inhibit three bacteria strains to provide candidate strains for the development and application of *** bacterial morphological identification,16S rDNA sequence alignment,and genetic evolution analysis,three strains were identified as Bacillus haynesii,named HP01,HD02,and *** biosurfactant activity tests,C-TAB tests,hemolysis tests,and antibacterial activity analyses,the results showed that all three strains of *** exhibited significant biosurfactant ***,the solutions of the three strains demonstrated a pronounced antibacterial effect on Staphylococcus *** resistance and safety of commonly used drugs were evaluated using the tablet diffusion method and a mouse feeding *** results indicated that the three strains were not resistant to commonly used antibacterial drugs,and the oral bacterial solution was not pathogenic and had high safety in *** study concluded that all three *** strains met the basic conditions for use,with *** HP01 being the most promising candidate.

关键词： Bacillus haynesii Separation identification Antibacterial activity Safety

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Exploration of Ideological and Political education in Veterinary Microbiology Experimental Technology

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Journal of Contemporary educational Research 2024年第9期8卷 40-46页

作者： Jiedan Liao School of Animal Science and Technology Foshan UniversityFoshan 528225Guangdong ProvinceChina

The veterinary microbiology experimental course plays a key role in education and practice,integrating“knowledge,skills,and qualities”into the talent cultivation *** syllabus has been revised to emphasize the course’s ideological and political education *** extraction of ideological and political elements focuses on developing a curriculum that includes ideological and political teaching materials and cases,ensuring coherence across classroom teaching,social practice,and online *** organically integrating ideological and political elements within stories,along with professional knowledge,operational skills,and social practice,the course aims to enhance the appeal and effectiveness of ideological and political education in the experimental course.

关键词： Veterinary Microbiology Experimental Technology Ideological and political education Exploration

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Comparison of Antibacterial Activities of Six Bacillus amyloliquefaciens Strains

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Journal of Clinical and Nursing Research 2024年第9期8卷 261-272页

作者： Jiedan Liao Yingwen Chen Yuchao Lin Junxiang Wei Hongyu Gao Yuchen Liu Wanjun Gu Zhiheng Xie Shuzhen Zhou College of Animal Science and Technology Foshan UniversityFoshan 528225Guangdong ProvinceChina Foshan City Nanhai Eastern Along Pharmaceutical Co. LtdFoshan 528234Guangdong ProvinceChina

In this study, six bacterial strains were isolated from the sediment, probiotic fermentation products, and lake sediments, they were identified as Bacillus amyloliquefaciens using genetic evolution analysis, which were named B3, B4, B5, XD3, YF6, and YF8. The comparison of the antibacterial activity, hemolytic activity, and antibiotic sensitivity of six Bacillus amyloliquefaciens strains laid a foundation for the development and application of antimicrobial peptide products. A surface activity assay was used to determine the production of biosurfactants in six Bacillus amyloliquefaciens strains. With Staphylococcus aureus and Escherichia coli as indicator bacteria, their antibacterial activity was determined using the agar diffusion method;the same diffusion method was used to determine the antibiotic susceptibility of Bacillus amyloliquefaciens. The results showed that the six Bacillus amyloliquefaciens strains had obvious biosurface activity, and the bacteria inhibited Staphylococcus aureus and Escherichia coli, from strong to weak: YF8, XD3, B3, B4, YF6, and B5. Strain YF8 had the best broad-spectrum bacteriostatic effect, followed by strain XD3. All Bacillus amyloliquefaciens strains were susceptible to 16 common drugs, except for Bacillus amyloliquefaciens strain YF8, which was intermediate to neomycin. The study shows that Bacillus amyloliquefaciens and secondary metabolites have the ability to produce a variety of active peptides, exert a certain inhibitory effect on common pathogens, and have the potential to develop as animal probiotics.

关键词： Bacillus amyloliquefaciens Identification Biosurface activity Antibacterial activity Drug sensitivity test

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电催化还原二氧化碳合成C_(3+)产物

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Science China Materials 2024年第6期67卷 1780-1790页

作者：罗雨婷胡书萁刘碧录 Department of Electrical and Computer Engineering University of TorontoTorontoOntario M5S 3G4Canada Shenzhen Geim Graphene Center Shenzhen Key Laboratory of Layered Materials for Value-Added ApplicationsTsinghua-Berkeley Shenzhen Institute&Institute of Materials ResearchTsinghua Shenzhen International Graduate SchoolTsinghua UniversityShenzhen 518055China

通过电催化还原反应将二氧化碳(CO_(2))转换为重要燃料和化工原料意义重大,有利于推进工业低碳化发展.如今,该技术路线可以实现C_(1)和C_(2)产物的高选择性、快速合成,但合成高值碳三加(C_(3+))产物的转化率仍较低.本文中,我们聚焦电催... 详细信息

通过电催化还原反应将二氧化碳(CO_(2))转换为重要燃料和化工原料意义重大,有利于推进工业低碳化发展.如今,该技术路线可以实现C_(1)和C_(2)产物的高选择性、快速合成,但合成高值碳三加(C_(3+))产物的转化率仍较低.本文中,我们聚焦电催化还原二氧化碳合成C_(3+)产物的进展,重点关注CO_(2)转化为C_(3+)产物的催化剂材料、电化学系统和串联反应器这三个方面.最后,本文指出了该领域面临的主要挑战和未来的研究方向.

关键词：电催化还原二氧化碳催化剂材料化工原料高选择性快速合成转化率

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