检索结果-南通市图书馆

Chinese Chemical Letters 2024年第7期35卷 173-177页

作者： Xin Li Xuan Ding junkun zhou Hui Shi Zhenxi Dai Jiayi Liu Yongcun Ma Penghui Shao Liming Yang Xubiao Luo Key Laboratory of Jiangxi Province for Persistent Pollutants Control and Resources Recycle Nanchang Hangkong UniversityNanchang 330063China School of Life Science Jinggangshan UniversityJi’an 343009China

The preparation of hydrogel adsorbents with admirable performance for efficient selective remove Pb(Ⅱ)in complex wastewater still remains a great ***,a novel bifunctional modified polymer hydrogel PAM-PAMPS was prepared by crosslinking acrylamide(AM)and 2-acrylamido-2-methylpropanesulfonic acid(AMPS).Compared with PEG,PAA and PAMPS,PAM-PAMPS exhibited both the maximum adsorption capacity of Pb(Ⅱ)(541.90 mg/g)and satisfactory selectivity for Pb(Ⅱ)in multiple heavy metal ions coexistence *** characterizations indicated that–SO3H and–NH2as active sites on PAM-PAMPS occur the synergistic effects of ion-exchange and coordination with Pb(Ⅱ)during the adsorption process,*** adsorption energy Ead(PAM-PAMPS)obtained from density functional theory(DFT)calculations was lower than the other three hydrogels,manifesting that PAMPAMPS formed the most stable complex with Pb(Ⅱ),which further demonstrated that Pb(Ⅱ)preferred to combine with PAM-PAMPS to selective capture of Pb(Ⅱ).The practice utilization of PAM-PAMPS was assessed by wastewater of electroplate containing Pb(Ⅱ).Meanwhile,the removal ratio of PAM-PAMPS was maintained at about 89%after 4 adsorption-desorption *** study establishes a new and effective idea for the design and fabrication of bifunctionalized modified polymer hydrogels.

关键词： Synergistic effects Bifunctional Polymer hydrogel Selective capture Pb(Ⅱ)

ReChoreoNet: Repertoire-based Dance Re-choreography with Music-conditioned Temporal and Style Clues

在线全文

学校读者我要写书评

暂无评论

Machine Intelligence Research 2024年第4期21卷 771-781页

作者： Ho Yin Au Jie Chen junkun Jiang Yike Guo Department of Computer Science Hong Kong Baptist UniversityHong Kong 999077China Department of Computer Science and Engineering The Hong Kong University of Science and EngineeringHong Kong 999077China

To generate dance that temporally and aesthetically matches the music is a challenging problem in three ***,the generated motion should be beats-aligned to the local musical ***,the global aesthetic style should be matched between motion and *** third,the generated motion should be diverse and *** address these challenges,we propose ReChoreoNet,which re-choreographs high-quality dance motion for a given piece of music.A data-driven learning strategy is proposed to efficiently correlate the temporal connections between music and motion in a progressively learned cross-modality embedding *** beats-aligned content motion will be subsequently used as autoregressive context and control signal to control a normalizing-flow model,which transfers the style of a prototype motion to the final generated *** addition,we present an aesthetically labelled music-dance repertoire(MDR)for both efficient learning of the cross-modality embedding,and understanding of the aesthetic connections between music and *** demonstrate that our repertoire-based framework is robustly extensible in both content and *** quantitative and qualitative experiments have been carried out to validate the efficiency of our proposed model.

关键词： Generative model cross-modality learning normalizing flow tempo synchronization style transfer.

Compositional tuning of A2B7-type La0.7-xYxMg0.3Ni3.5 alloys for gaseous hydrogen storage

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Journal of Rare Earths 2024年第10期42卷 1912-1919页

作者： junkun Du Hui Wang Renheng Tang Jiangwen Liu Liuzhang Ouyang Min Zhu School of Materials Science and Engineering Guangdong Engineering Technology Research Center of Advanced Energy Storage MaterialsSouth China University of Technology

Rare earth-based superlattice alloys have great potential for gaseous hydrogen storage,as well as successful application as nickel-metal hydride batteries *** this work,Y substitution was carried out to adjust the gaseous hydrogen storage properties of A2B7-type *** results indicate a multiphase structure in the alloys comprised of the main rhombohedral Gd2Co7and PuNi3phases,with a small amount of ***,the Y substitution results in higher abundance of the *** alloy La0.42Y0.28Mg0.3Ni3.5exhibits a hydrogen storage cap acity of 1.55 wt% at 298 K and a desorption plateau pressure of 0.244 *** addition,this alloy demonstrates a stable cycle life by a capacity retention of 94.2% after 50 cycles,with the main capacity degradation occurring during the initial 20 *** work accentuates the potential of the La-Y-Mg-Ni-based superlattice alloys for applications in solid-state hydrogen storage.

关键词： A2B7-type La–Mg–Ni alloys Cycle performance Desorption plateau pressure Hydrogen storage Rare earths Y substitution

Simultaneous control of ferromagnetism and ferroelasticity by oxygen octahedral backbone stretching

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

Chinese Physics B 2024年第9期33卷 186-192页

作者： Genhao Liang Hui Cao Long Cheng junkun Zha Mingrui Bao Fei Ye Hua zhou Aidi Zhao Xiaofang Zhai Department of Physics University of Science and Technology of ChinaHefei 230026China School of Physical Science and Technology ShanghaiTech UniversityShanghai 201210China Materials Science Division Argonne National LaboratoryLemontIL 60439USA X-ray Science Division Advanced Photon SourceArgonne National LaboratoryLemontIL 60439USA

Coexistence of ferromagnetism and ferroelasticity in a single material is an intriguing phenomenon,but has been rarely *** we studied both the ferromagnetism and ferroelasticity in a group of LaCoO3 films with systematically tuned atomic *** found that all films exhibit ferroelastic domains with four-fold symmetry and the larger domain size(higher elasticity)is always accompanied by stronger *** performed synchrotron x-ray diffraction studies to investigate the backbone structure of the CoO6 octahedra,and found that both the ferromagnetism and the elasticity are simultaneously enhanced when the in-plane Co–O–Co bond angles are *** the study demonstrates the inextricable correlation between the ferromagnetism and ferroelasticity mediated through the octahedral backbone structure,which may open up new possibilities to develop multifunctional materials.

关键词： perovskite oxide film ferromagnetism ferroelasticity twin domain

Tree allometry responses to competition and complementarity in mixed-species plantations of Betula alnoides

在线全文

学校读者我要写书评

暂无评论

Forest Ecosystems 2024年第4期11卷 469-479页

作者： Boyao Chen Kaili Liu Chunsheng Wang Junjie Guo junkun Lu Lin Chen Zhigang Zhao Jie Zeng Research Institute of Tropical Forestry Chinese Academy of ForestryGuangzhou510520China Central South University of Forestry&Technology Changsha410004China Experimental Center of Tropical Forestry Chinese Academy of ForestryPingxiang532600China Nanjing Forestry University Nanjing210037China

Tree allometry plays a crucial role in tree survival,stability,and timber quantity and quality of mixed-species ***,the responses of tree allometry to resource utilisation within the framework of interspecific competition and complementarity remain poorly *** into consideration strong-and weakspace competition(SC and WC),as well as N_(2)-fixing and non-N_(2)-fixing tree species(FN and nFN),a mixedspecies planting trial was conducted for Betula alnoides,a pioneer tree species,which was separately mixed with Acacia melanoxylon(SC+FN),Erythrophleum fordii(WC+FN),Eucalyptus cloeziana(SC+nFN)and Pinus kesiya ***(WC+nFN)in southern *** years after planting,tree growth,total nitrogen(N)and carbon(C)contents,and the natural abundances of^(15)N and^(13)C in the leaves were measured for each species,and the mycorrhizal colonisation rates of *** were investigated under each *** variations and their relationships with space competition and nutrient-related factors were *** results showed a consistent effect of space competition on the height-diameter relationship of *** in mixtures with FN or *** tree height growth of *** was significantly promoted under high space competition,and growth in diameter at breast height(DBH),tree height and crown size were all expedited in mixtures with *** symbiotic relationship between ectomycorrhizal fungi and *** was significantly influenced by both space competition and N_(2) fixation by the accompanying tree species,whereas such significant effects were absent for arbuscular mycorrhizal ***,high space competition significantly decreased the water use efficiency(WUE)of ***,and its N use efficiency(NUE)was much lower in the FN *** equation modeling further demonstrated that the stem allometry of *** was affected by its NUE and WUE via changes in its height growth,and crown allometry was influ

关键词： Allometric relationship Resources competition and complementarity Mixed-species forest Tree-fungal symbiotic relationship N_2-fixing tree species Resource utilisation strategies

Transferrin Is Up-Regulated by Microbes and Acts as a Negative Regulator of Immunity to Induce Intestinal Immunotolerance

在线全文

学校读者我要写书评

暂无评论

Research 2024年第3期7卷 761-774页

作者： Xiaopeng Tang Mingqian Fang Ruomei Cheng junkun Niu Xiaoshan Huang Kuanhong Xu Gan Wang Yang Sun Zhiyi Liao Zhiye Zhang James Mwangi Qiumin Lu Aili Wang Longbao Lv Chao Liu Yinglei Miao Ren Lai Engineering Laboratory of Peptides of Chinese Academy of Sciences Key Laboratory of Bioactive Peptides of Yunnan ProvinceKIZ-CUHK Joint Laboratory of Bioresources and Molecular Research in Common DiseasesNational Resource Center for Non-Human PrimatesNational Research Facility for Phenotypic&Genetic Analysis of Model Animals(Primate Facility)and Sino-African Joint Research CenterNew Cornerstone Science InstituteKunming Institute of Zoologythe Chinese Academy of SciencesNo.17 Longxin RoadKunmingYunnan650201China School of Basic Medicine Qingdao UniversityQingdao 266071ShandongChina. Department of Gastroenterology First Affiliated Hospital of Kunming Medical UniversityYunnan Institute of Digestive DiseaseKunming 650032YunnanChina Yunnan Province Clinical Research Center for Digestive Diseases Kunming 650032YunnanChina Kunming College of Life Science University of Chinese Academy of SciencesKunming 650204YunnanChina Hefei National Laboratory for Physical Sciences at the Microscale and School of Life Sciences University of Science and Technology of ChinaHefei 230027AnhuiChina Center for Evolution and Conservation Biology Southern Marine Science and Engineering Guangdong LaboratoryGuangzhou 511458GuangdongChina.

Cross-talks (e.g., host-driven iron withdrawal and microbial iron uptake between host gastrointestinal tract and commensal microbes) regulate immunotolerance and intestinal homeostasis. However, underlying mechanisms that regulate the cross-talks remain poorly understood. Here, we show that bacterial products up-regulate iron-transporter transferrin and transferrin acts as an immunosuppressor by interacting with cluster of differentiation 14 (CD14) to inhibit pattern recognition receptor (PRR) signaling and induce host immunotolerance. Decreased intestinal transferrin is found in germ-free mice and human patients with ulcerative colitis, which are characterized by impaired intestinal immunotolerance. Intestinal transferrin and host immunotolerance are returned to normal when germ-free mice get normal microbial commensalism, suggesting an association between microbial commensalism, transferrin, and host immunotolerance. Mouse colitis models show that transferrin shortage impairs host’s tolerogenic responses, while its supplementation promotes immunotolerance. Designed peptide blocking transferrin–CD14 interaction inhibits immunosuppressive effects of transferrin. In monkeys with idiopathic chronic diarrhea, transferrin shows comparable or even better therapeutic effects than hydrocortisone. Our findings reveal that by up-regulating host transferrin to silence PRR signaling, commensal bacteria counteract immune activation induced by themselves to shape host immunity and contribute for intestinal tolerance.

关键词： impaired immunity tolerance

Manual Order Picking Route Optimization in Distribution Warehouse of Chain Furniture Retail Enterprise

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

American Journal of Operations Research 2024年第3期14卷 105-136页

作者： Yongzhen Zeng junkun Wang Ching-Kuei Kao King-Zoo Tang Department of Logistics Management Fujian University of Technology Fuzhou China Key Laboratory of LNG Industry Chain Fujian University of Technology Fuzhou China Department of Information Management National Chung Cheng University Chiayi China

Due to the effects of the COVID-19 pandemic and the rise of online shopping, the offline sales of IKEA Fuzhou have been declining since 2020. Because the cost of distribution warehouse is a major expense for offline chain furniture retailers, and the picking process is a key activity in distribution warehouse operations. To reduce the cost of distribution warehouse and alleviate the survival pressure of the offline chain furniture retailers, this paper focuses on optimizing the picking route of the IKEA Fuzhou distribution warehouse. It starts by creating a two-dimensional coordinate system for the storage location of the distribution warehouse using the traditional S-type picking strategy to calculate the distance and time of the sorting route. Then, the problem of optimizing the picking route is then transformed into the travelling salesman problem (TSP), and picking route optimization model is developed using a genetic algorithm to analyze the sorting efficiency and picking route optimization. Results show that the order-picking route using the genetic algorithm strategy is significantly better than the traditional S-type picking strategy, which can improve overall sorting efficiency and operations, reduce costs, and increase efficiency. Thus, this establishes an implementation process for the order-picking path based on genetic algorithm optimization to improve overall sorting efficiency and operations, reduce costs, increase efficiency, and alleviate the survival pressure of pandemic-affected enterprises.

关键词： S-Shaped Picking Strategy Picking Route Traveling Salesman Problem Genetic Algorithm

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

蒸养再生细骨料砂浆抗硫酸盐侵蚀性能研究

低温建筑技术 2021年第9期43卷 10-14,25页

作者：周俊坤于峰泉耿健浙江大学工程师学院杭州310015 宁波市轨道交通集团有限公司浙江宁波315100 浙大宁波理工学院浙江宁波315100

通过改变蒸汽养护参数和再生细骨料掺量来研究蒸养再生砂浆经硫酸盐侵蚀后其抗压强度变化规律,同时利用灰色关联分析方法就蒸养参数对再生细骨料砂浆经硫酸盐侵蚀其抗压强度变化全过程进行了分析总结。结果表明蒸养再生砂浆抗压强度变... 详细信息

通过改变蒸汽养护参数和再生细骨料掺量来研究蒸养再生砂浆经硫酸盐侵蚀后其抗压强度变化规律,同时利用灰色关联分析方法就蒸养参数对再生细骨料砂浆经硫酸盐侵蚀其抗压强度变化全过程进行了分析总结。结果表明蒸养再生砂浆抗压强度变化率随硫酸盐溶液浸泡龄期的增长呈现出先增大后减小的趋势;当分别以蒸养再生砂浆经硫酸盐侵蚀抗压强度增长速率和降低速率为参考序列时,各蒸养参数对两者的影响规律一致,即蒸养参数对砂浆经硫酸盐侵蚀强度发展全过程的影响,恒温温度>恒温时间>静养时间。

关键词：灰色关联度硫酸盐侵蚀蒸汽养护再生细骨料

非理想检测下多雷达网络节点选择与辐射资源联合优化分配算法

在线全文

学校读者我要写书评

暂无评论

雷达学报（中英文） 2024年第3期13卷 565-583页

作者：时晨光唐志诚周建江严俊坤王子微南京航空航天大学雷达成像与微波光子技术教育部重点实验室南京210016 西安电子科技大学雷达信号处理国家重点实验室西安710071 北京控制与电子技术研究所北京100045

该文针对分布式相控阵多雷达网络的多目标跟踪场景,研究非理想检测条件下的节点选择与辐射资源联合优化分配算法。首先,根据分布式相控阵多雷达网络构成、目标运动模型、雷达量测模型以及雷达节点检测情况,推导非理想检测下以雷达节点... 详细信息

该文针对分布式相控阵多雷达网络的多目标跟踪场景,研究非理想检测条件下的节点选择与辐射资源联合优化分配算法。首先,根据分布式相控阵多雷达网络构成、目标运动模型、雷达量测模型以及雷达节点检测情况,推导非理想检测下以雷达节点选择、辐射功率和信号带宽为变量的贝叶斯克拉默-拉奥下界(BCRLB)闭式解析表达式,并以此作为多目标跟踪精度衡量指标。在此基础上,以最小化系统各雷达节点对所有目标的总辐射功率为优化目标,以满足目标跟踪精度门限以及给定的系统射频辐射资源限制为约束条件,建立非理想检测条件下多雷达网络节点选择与辐射资源联合优化分配模型,对各时刻雷达节点选择、辐射功率和信号带宽等参数进行联合优化设计,以提升多雷达网络的射频隐身性能。最后,针对上述非线性、非凸优化问题,采用基于障碍函数法和循环最小化算法的4步分解算法进行求解。仿真结果表明,与现有算法相比,所提算法能在满足给定多目标跟踪精度的条件下有效降低分布式相控阵多雷达网络的总辐射功率,至少降低了约32.3%,从而提升其射频隐身性能。

关键词：雷达资源分配分布式多雷达网络多目标跟踪非理想检测贝叶斯克拉默-拉奥下界

基于文旅融合的四川非遗巴渠童谣的数字绘本转化研究

在线全文

学校读者我要写书评

暂无评论

包装工程 2024年第16期45卷 439-447页

作者：王军杨俊坤广西师范大学广西桂林541000 西南民族大学成都610041

目的以传统四川非遗巴渠童谣为研究对象,探索当地文化旅游资源与巴渠童谣数字绘本进行双向结合的方法和路径,旨在用巴渠童谣数字绘本的视听感受、游戏互动及网络传播等优势对当地文旅资源起到更广泛的推广和宣传作用。方法用文献调查法... 详细信息

目的以传统四川非遗巴渠童谣为研究对象,探索当地文化旅游资源与巴渠童谣数字绘本进行双向结合的方法和路径,旨在用巴渠童谣数字绘本的视听感受、游戏互动及网络传播等优势对当地文旅资源起到更广泛的推广和宣传作用。方法用文献调查法对“巴渠童谣”的历史文脉、政治和文化意义进行梳理,并以“巴渠”为地域范围,用文献调查法和田野调查法相结合的方式,对当地进行文化旅游相关资源的调查和研究,将巴渠童谣和当地文化旅游资源融合起来,力求构建一套四川非遗巴渠童谣的数字传承和传播的新形式,并以实证案例加以阐释。结果基于上述方法,以巴渠童谣和巴渠地区的文化旅游相关资源为研究主体,对巴渠童谣进行数字化传承和传播的新模式探究,并以理论指导实践,在非物质文化遗产的数字化传承和当地文旅结合的多重传播形式上取得了较好的突破。结论通过对四川非遗巴渠童谣及当地文旅融合的数字转化再设计实践表明,四川非遗巴渠童谣数字绘本能在视觉、听觉、互动传播以及周边衍生品几个方面与地方文旅资源进行有效结合,因此,数字绘本作为一种创新载体,为推进非遗文化的传承与创新、丰富地域文化旅游内涵、扩大地域文旅资源传播,开辟了新的途径和可能性。

关键词：非物质文化遗产巴渠童谣数字转化