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Mn-based cathode materials for rechargeable batteries

Science China Chemistry 2024年第1期67卷 87-105页

作者： Xu Zhang Shiqi Liu Boya Wang Guoqing Wang haozhe du Xuanyu Wang Haidong Zhang Shu Zhao Lin Wang Haijun Yu Institute of Advanced Battery Materials and Devices Faculty of Materials and ManufacturingBeijing University of TechnologyBeijing 100124China Key Laboratory of Advanced Functional Materials Ministry of EducationBeijing University of TechnologyBeijing 100124China Create Energy&Benefit Future Co.Ltd. Beijing 100176China

The rapid expansion of renewable energies asks for great progress of energy-storage technologies for sustainable energy supplies,which raises the compelling demand of high-performance rechargeable batteries.To satisfy the huge demand from the coming energy-storage market,the resource and cost-effectiveness of rechargeable batteries become more and more important.Manganese(Mn)as a key transition element with advantages including high abundance,low cost,and low toxicity derives various kinds(spinels,layered oxides,polyanions,Prussian blue analogs,etc.)of high-performance Mn-based electrode materials,especially cathodes,for rechargeable batteries ranging from Li-ion batteries,Na-ion batteries,aqueous batteries,to multivalent metal-ion batteries.It is anticipated that Mn-based materials with Mn as the major transition-metal element will constitute a flourishing family of Mn-based rechargeable batteries(Mn RBs)for large-scale and differentiated energy-storage applications.On the other hand,several critical issues including Jahn-Teller effect,Mn dissolution,and O release greatly hinder the pace of Mn RBs,which require extensive material optimizations and battery/system improvements.This review aims to provide an investigation about Mn-based materials and batteries for the coming energy-storage demands,with compelling issues and challenges that must be overcome.

关键词： manganese cathode materials Mn-based rechargeable batteries energy storage

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The flow behavior of droplet adsorption on a liquid-liquid interface accompanied by cross-linking reaction and phase separation in a microchannel

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Chinese Journal of Chemical Engineering 2024年第2期66卷 60-70页

作者： haozhe Yi Taotao Fu Chunying Zhu Youguang Ma State Key Laboratory of Chemical Engineering School of Chemical Engineering and TechnologyTianjin UniversityTianjin 300072China

The adsorption process of droplets on the liquid-liquid interface and phase separation process can regulate the spatial distribution of the fluid system,which are crucial for chemical engineering.However,the cross-linking reaction,which is widely used in the field of polymers,can change the physical properties of the fluids and affect the flow behavior accordingly.A configuration of microchannels is designed to conveniently generate uniform droplets in one phase of the parallel flow.The flow behavior of the adsorption process of sodium alginate droplets on the liquid-liquid interface is investigated,and the subsequent process of phase separation is studied.In the process of droplet adsorption,the crosslinking reaction occurs synchronously,which makes the droplet viscosity and the elasticity modules of the droplet surface increase,thus affecting the dynamics of the adsorption process and the equilibrium shape of the droplet.The variation of the adsorption length with time is divided into three stages,which all conform to power law relationship.The exponents of the second and third stages deviate from the results of the Tanner's law.The flow pattern maps of droplet adsorption and phase separation are drawn,and the operating ranges of complete adsorption and complete separation are provided.This study provides a theoretical basis for further studying the flow behavior of droplets with cross-linking reaction in a microchannel.

关键词： Microfluidics Droplet Dynamics Crosslink Adsorption Separation

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Real-time distance field acceleration based free-viewpoint video synthesis for large sports fields

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Computational Visual Media 2024年第2期10卷 331-353页

作者： Yanran Dai Jing Li Yuqi Jiang Haidong Qin Bang Liang Shikuan Hong haozhe Pan Tao Yang School of Telecommunications Engineering Xidian UniversityXi’an 710071China National Engineering Laboratory for Integrated AeroSpace-Ground-Ocean Big Data Application Technology SAIIPthe School of Computer ScienceNorthwestern Polytechnical UniversityXi’an 710129China

Free-viewpoint video allows the user to view objects from any virtual perspective,creating an immersive visual experience.This technology enhances the interactivity and freedom of multimedia performances.However,many free-viewpoint video synthesis methods hardly satisfy the requirement to work in real time with high precision,particularly for sports fields having large areas and numerous moving objects.To address these issues,we propose a freeviewpoint video synthesis method based on distance field acceleration.The central idea is to fuse multiview distance field information and use it to adjust the search step size adaptively.Adaptive step size search is used in two ways:for fast estimation of multiobject three-dimensional surfaces,and synthetic view rendering based on global occlusion judgement.We have implemented our ideas using parallel computing for interactive display,using CUDA and OpenGL frameworks,and have used real-world and simulated experimental datasets for evaluation.The results show that the proposed method can render free-viewpoint videos with multiple objects on large sports fields at 25 fps.Furthermore,the visual quality of our synthetic novel viewpoint images exceeds that of state-of-the-art neural-rendering-based methods.

关键词： free-viewpoint video view synthesis camera array distance field sports video

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In-situ sludge reduction based on Mn^(2+)-catalytic ozonation conditioning:Feasibility study and microbial mechanisms

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Journal of Environmental Sciences 2024年第1期135卷 185-197页

作者： haozhe Huang Tingting Wei Hui Wang Bing Xue Sisi Chen Xiankai Wang Haibin Wu Bin Dong Zuxin Xu College of Environmental Science and Engineering Tongji UniversityShanghai 200092China YANGTZE Eco-Environment Engineering Research Center China Three Gorges CorporationBeijing 100038China

To improve the sludge conditioning efficiency without increasing the ozone dose,an in-situ sludge reduction process based on Mn^(2+)-catalytic ozonation conditioning was proposed.Using ozone conditioning alone as a control,a lab-scale sequencing batch reactor coupled with ozonated sludge recycle was evaluated for its operating performance at an ozone dose of 75 mg O_(3)/g VSS and 1.5 mmol/L Mn^(2+)addition.The results showed a 39.4%reduction in MLSS and an observed sludge yield of 0.236 kg MLSS/kg COD for the O_(3)+Mn^(2+)group compared to the O_(3)group (15.3%and 0.292 kg MLSS/kg COD),accompanied by better COD,NH_(4)^(+)-N,TN and TP removal,improved effluent SS and limited impact on excess sludge properties.Subsequently,activity tests,BIOLOG ECO microplates and 16S rRNA sequencing were applied to elucidate the changing mechanisms of Mn^(2+)-catalytic ozonation related to microbial action:(1) Dehydrogenase activity reached a higher peak.(2) Microbial utilization of total carbon sources had an elevated effect,up to approximately 18%,and metabolic levels of six carbon sources were also increased,especially for sugars and amino acids most pronounced.(3) The abundance of Defluviicoccus under the phylum Proteobacteria was enhanced to 12.0%and dominated in the sludge,they had strong hydrolytic activity and metabolic capacity.Denitrifying bacteria of the genus Ferruginibacter also showed an abundance of 7.6%,they contributed to the solubilization and reduction of sludge biomass.These results could guide researchers to further reduce ozonation conditioning costs,improve sludge management and provide theoretical support.

关键词： Activated sludge In-situ reduction Catalytic ozonation conditioning Dehydrogenase activity Carbon source utilization Microbial community

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中国当代价值论美学的先声--黄药眠“美是评价”观点的学术史审视

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中国文艺评论 2024年第2期 70-80,I0002,I0003页

作者：谭好哲山东大学文艺美学研究中心

黄药眠是20世纪五六十年代“美学大讨论”最初的积极参与者和推动者,在与朱光潜、蔡仪等人美学观点的批判性对话与争鸣中提出了“美是人对于客观事物的审美的评价”的观点。“美是评价”的观点将美学问题的研讨置于唯物主义的立场和方... 详细信息

黄药眠是20世纪五六十年代“美学大讨论”最初的积极参与者和推动者,在与朱光潜、蔡仪等人美学观点的批判性对话与争鸣中提出了“美是人对于客观事物的审美的评价”的观点。“美是评价”的观点将美学问题的研讨置于唯物主义的立场和方法论之上,以“美是人类社会生活现象”的基本论断为理论逻辑前提,提出并阐发了美以人的存在而存在、“审美现象首先应从生活与实践中去找寻根源”、“美是人对客观世界的主观的把握”三大理论主张。这些观点和主张在当时占据主流形态的认识论美学范式笼罩之下发出了价值论美学研究的先声,对中国当代美学研究的学术创新和自主知识体系建构具有理论借鉴和启示意义。

关键词：黄药眠中国当代美学价值论美学生活实践美是评价

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聚焦中国式现代化进程将中国学术转型推向新境界

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济南大学学报（社会科学版） 2024年第2期34卷 18-21页

作者：谭好哲山东大学文艺美学研究中心

《济南大学学报》(社会科学版)“本土化与中国学术转型”专栏成功入选中共中央宣传部“首批哲学社会科学期刊重点专栏”建设名单,实在可喜可贺。作为最早参与这一栏目的策划并为之提供了文章、尽了绵薄之力的作者,我甚感与有荣焉。如何... 详细信息

《济南大学学报》(社会科学版)“本土化与中国学术转型”专栏成功入选中共中央宣传部“首批哲学社会科学期刊重点专栏”建设名单,实在可喜可贺。作为最早参与这一栏目的策划并为之提供了文章、尽了绵薄之力的作者,我甚感与有荣焉。如何方能进一步提升该栏目办刊质量,是一个需要认真对待的问题。对此,我个人认为,该栏目今后的建设还要在两个方面有所坚持:一是栏目设置初心,二是理论创新品性。坚持栏目设置初心,才能保持稳定而又具有清晰辨析度的栏目特色;坚持理论创新品性,才能不断将中国学术转型推向新境界,为中国哲学社会科学自主知识体系的当代建构作出更大贡献。

关键词：栏目特色大学学报办刊质量中国式现代化学术转型中共中央宣传部栏目设置中国哲学社会科学

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Z形折叠翼厚度对其气动特性影响分析

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大连理工大学学报 2024年第1期64卷 40-47页

作者：张昊哲段富海大连理工大学机械工程学院辽宁大连116024

Z形折叠翼飞行器可在飞行过程中改变机翼面积,改善气动特性,执行多种任务.然而机翼折叠过程中有效气动面积、重心、气动焦点等参数的变化,会对飞行器气动特性产生较大影响.此外,机翼表面相互靠近,由机翼厚度引发的气动干扰也会导致升力... 详细信息

Z形折叠翼飞行器可在飞行过程中改变机翼面积,改善气动特性,执行多种任务.然而机翼折叠过程中有效气动面积、重心、气动焦点等参数的变化,会对飞行器气动特性产生较大影响.此外,机翼表面相互靠近,由机翼厚度引发的气动干扰也会导致升力、折叠铰链力矩等气动力发生变化.为此,首先利用薄翼理论和升力面法推导理想气体来流条件下折叠翼的定常气动力表达式.然后,采用CFD法分析折叠过程中折叠角、攻角和机翼厚度对飞行器升力、折叠铰链力矩等气动特性的影响,并将分析结果与升力面法结果对比.结果表明机翼折叠过程中,有效气动面积减小,升力、阻力系数总体呈下降趋势;随着折叠角增大,机翼表面相互靠近产生的低压区强度增加,机翼厚度对折叠翼气动特性影响显著增强.另外相比于CFD法,忽略机翼厚度项的升力面法对于折叠翼的气动力计算会产生较大误差.

关键词： Z形折叠翼 CFD法升力面法气动力

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Identification of new cotton fiber-quality QTL by multiple genomic analyses and development of markers for genomic breeding

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The Crop Journal 2024年第3期12卷 866-879页

作者： haozhe Tan Binghui Tang Mengling Sun Qiulu Yin Yizan Ma Jianying Li Pengcheng Wang Zhonghua Li Guannan Zhao Maojun Wang Xianlong Zhang Chunyuan You Lili Tu National Key Laboratory of Crop Genetic Improvement Hubei Hongshan LaboratoryHuazhong Agricultural UniversityWuhan 430070HubeiChina Cotton Research Institute Shihezi Academy of Agriculture ScienceShihezi 832000XinjiangChina

Cotton fiber is one of the main raw materials for the textile industry.In recent years,many cotton fiber quality QTL have been identified,but few were applied in breeding.In this study,a genome wide association study(GWAS)of fiber-quality traits in 265 upland cotton breeding intermediate lines(GhBreeding),combined with genome-wide selective sweep analysis(GSSA)and genomic selection(GS),revealed 25 QTL.Most of these QTL were ignored by only using GWAS.The CRISPR/Cas9 mutants of GhMYB_D13 had shorter fiber,which indicates the credibility of QTL to a certain extent.Then these QTL were verified in other cotton natural populations,5 stable QTL were found having broad potential for application in breeding.Additionally,among these 5 stable QTL,superior genotypes of 4 showed an enrichment in most improved new varieties widely cultivated currently.These findings provide insights for how to identify more QTL through combined multiple genomic analysis to apply in breeding.

关键词： Cotton fiber quality breeding GWAS Genome-wide selective sweep analysis Genomic selection InDel markers

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用于学习和解释行人预期行为的群体交互场

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Engineering 2024年第3期34卷 70-82页

作者： Xueyang Wang Xuecheng Chen Puhua Jiang haozhe Lin Xiaoyun Yuan Mengqi Ji Yuchen Guo Ruqi Huang Lu Fang Sigma Laboratory Department of Electronic EngineeringTsinghua UniversityBeijing 100084China Beijing National Research Center for Information Science and Technology Tsinghua UniversityBeijing 100084China Tsinghua Shenzhen International Graduate School Shenzhen 518055China Department of Automation Tsinghua UniversityBeijing 100084China Institute of Artificial Intelligence Beihang UniversityBeijing 100191China Zhejiang Future Technology Institute Yangtze Delta Region Institute of Tsinghua UniversityZhejiangJiaxing 314033China

Anticipating others’actions is innate and essential in order for humans to navigate and interact well with others in dense crowds.This ability is urgently required for unmanned systems such as service robots and self-driving cars.However,existing solutions struggle to predict pedestrian anticipation accurately,because the influence of group-related social behaviors has not been well considered.While group relationships and group interactions are ubiquitous and significantly influence pedestrian anticipation,their influence is diverse and subtle,making it difficult to explicitly quantify.Here,we propose the group interaction field(GIF),a novel group-aware representation that quantifies pedestrian anticipation into a probability field of pedestrians’future locations and attention orientations.An end-to-end neural network,GIFNet,is tailored to estimate the GIF from explicit multidimensional *** quantifies the influence of group behaviors by formulating a group interaction graph with propagation and graph attention that is adaptive to the group size and dynamic interaction states.The experimental results show that the GIF effectively represents the change in pedestrians’anticipation under the prominent impact of group behaviors and accurately predicts pedestrians’future states.Moreover,the GIF contributes to explaining various predictions of pedestrians’behavior in different social states.The proposed GIF will eventually be able to allow unmanned systems to work in a human-like manner and comply with social norms,thereby promoting harmonious human-machine relationships.

关键词： Human behavior modeling and prediction Implicit representation of pedestrian anticipation Group interaction Graph neural network

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中国资源型收缩城市“人口-土地-产业”耦合协调分析

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世界地理研究 2024年第1期33卷 163-177页

作者：张浩哲杨庆媛西南大学地理科学学院重庆400715 西南大学绿色低碳发展研究所重庆400715 中国地理学会西亚地理研究所重庆400715 中国科学院水利部成都山地灾害与环境研究所成都610299

推动资源型收缩城市“人口-土地-产业”协调发展是实现区域高质量发展的难点与挑战。本文构建人口、土地、产业发展水平评价指标体系,采用耦合协调模型对中国26个资源型收缩城市2008、2013与2018年“人口-土地-产业”协调发展状况进行... 详细信息

推动资源型收缩城市“人口-土地-产业”协调发展是实现区域高质量发展的难点与挑战。本文构建人口、土地、产业发展水平评价指标体系,采用耦合协调模型对中国26个资源型收缩城市2008、2013与2018年“人口-土地-产业”协调发展状况进行分析。结果表明(:1)资源型收缩城市产业系统发展水平较高,土地系统发展处于中间水平,人口系统发展水平较低。各城市“人口-土地-产业”协调度均处于濒临失调和轻度失调等级,但多数城市具有上升趋势。(2)不同类型资源型收缩城市“人口-土地-产业”发展水平和协调度存在明显差异;从发展阶段来看,成熟型城市3大系统发展水平最高,而衰退型城市最低,2008和2013年协调度均值的排序为成长型>成熟型>再生型>衰退型,2018年为成长型>再生型>成熟型>衰退型;从主导产业来看,油气类城市3大系统发展水平最高,而煤炭类城市最低,协调度均值的排序在3个年份中均为油气类>黑色金属类>非金属类>森工类>煤炭类。(3)资源型收缩城市“人口-土地-产业”的协调发展模式以人口滞后型与土地滞后型为主。

关键词：资源型收缩城市人口-土地-产业耦合协调度协调发展模式

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