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Dissipation-induced nonreciprocal magnon blockade in a magnon-based hybrid system

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Science China(Physics,Mechanics & Astronomy) 2022年第6期65卷 44-52页

作者： Yimin wang Wei Xiong Zhiyong Xu Guo-Qiang Zhang jian-Qiang You Communications Engineering College Army Engineering University of PLANanjing 210007China Department of Physics Wenzhou UniversityWenzhou 325035China Interdisciplinary Center of Quantum Information State Key Laboratory of Modern Optical Instrumentationand Zhejiang Province Key Laboratory of Quantum Technology and DeviceSchool of PhysicsZhejiang UniversityHangzhou 310027China

We propose an experimentally realizable nonreciprocal magnonic device at the single-magnon level by exploiting magnon block-ade in a magnon-based hybrid *** coherent qubit-magnon coupling,mediated by virtual photons in a microwave cavity,leads to the energy-level anharmonicity of the composite *** contrast,the corresponding dissipative counterpart,induced by traveling microwaves in a waveguide,yields inhomogeneous broadenings of the energy *** a result,the cooperative effects of these two kinds of interactions give rise to the emergence of the direction-dependent magnon *** show that this can be demonstrated by studying the equal-time second-order correlation function of the magnon *** study opens an avenue to engineer nonreciprocal magnonic devices in the quantum regime involving only a small number of magnons.

关键词： nonreciprocal magnon blockade non-classical statistics dissipative coupling hybrid system

Bupi Hewei decoction ameliorates 5-fluorouracil-induced intestinal dysbiosis in rats through T helper 17/T regulatory cell signaling pathway

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Journal of Traditional Chinese Medicine 2020年第1期40卷 38-48页

作者： Sun Zhigao Hu Yazhuo wang Yuguo Feng jian Dou Yongqi Department of Traditional Chinese Medicine Chinese PLA General HospitalBeijing 100853China&Department of Traditional Chinese MedicineHainan Branch of Chinese PLA General HospitalSanya 572013China Institute of Gerontology Chinese PLA General HospitalBeijing 100853China Department of Traditional Chinese Medicine Chinese PLA General HospitalBeijing 100853China

OBJECTIVE:To observe the effects of the Bupi Hewei(BPHW)decoction on diarrhea and intestinal flora disorder induced by 5-fluorouracil(5-FU)and investigate the possible mechanism underlying these ***:Thirty-five male Sprague-Dawley rats were randomly divided into four groups:normal control,5-FU,5-FU+BPHW decoction(10.5 g/kg for 5 consecutive days),and 5-FU+Bacillus licheni-formis capsule groups(0.2 g/kg for 5 consecutive days).Animal models were established via the intraperitoneal injection of 5-FU(30 mg/kg for 5 consecutive days).At the end of the treatment period,diarrhea was assessed,and the change of the intestinal flora was examined using 16 S r DNA highthroughput ***(IL)-17,IL-21,IL-6,IL-10,RAR-related orphan receptor gamma(RORγt),and forkhead box P3(Foxp3)expression in the jejunum was detected using immunohistochemistry,quantitative real-time polymerase chain reaction(PCR),Western blotting,and enzymelinked immuno sorbent ***:In this study,the BPHW decoction effectively lowered the diarrhea score,increased the proportions of Bacteroidetes and Prevotellaceae-Alloprevotella species,and reduced the proportions of Proteobacteria,Escherichia-Shigella,Ruminococcaceae NK4 A214,and Ruminococcaceae UCG-005 species in the rat intestine after 5-FU *** addition,the BPHW decoction significantly suppressed the expression of IL-17,IL-21,IL-6,IL-10,RORγt,and Foxp3 in the ***:Our findings suggest that the BPHW decoction can improve the intestinal immune balance and reduce intestinal inflammation by targeting T helper cell/T regulatory cell-associated factors.

关键词： Gastrointestinal microbiome Fluorouracil Drug therapy T-Lymphocytes,regulatory Th17 cells Bupi Hewei decoction

The interaction among gut microbes,the intestinal barrier and short chain fatty acids

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Animal Nutrition 2022年第2期9卷 159-174页

作者： Jiayu Ma Xiangshu Piao Shad Mahfuz Shenfei Long jian wang State Key Laboratory of Animal Nutrition College of Animal Science and TechnologyChina Agricultural UniversityBeijing 100193China Department of Animal Nutrition Sylhet Agricultural UniversitySylhet 3100Bangladesh

The mammalian gut is inhabited by a massive and complicated microbial community, in which the hostachieves a stable symbiotic environment through the interdependence, coordination, reciprocal constraintsand participation in an immune response. The interaction between the host gut and themicrobiota is essential for maintaining and achieving the homeostasis of the organism. Consequently, guthomeostasis is pivotal in safeguarding the growth and development and potential productive performanceof the host. As metabolites of microorganisms, short chain fatty acids are not only the preferredenergy metabolic feedstock for host intestinal epithelial cells, but also exert vital effects on antioxidantsand the regulation of intestinal community homeostasis. Herein, we summarize the effects of intestinalmicroorganisms on the host gut and the mechanisms of action of short chain fatty acids on the fourintestinal barriers of the organism, which will shed light on the manipulation of the intestinal communityto achieve precise nutrition for specific individuals and provide a novel perspective for theprevention and treatment of diseases.

关键词： Short chain fatty acids Gut microbiota Intestinal barrier Intestinal epithelium cells Interaction mechanism

Re-fluidising the aged gel for high-density alumina green body

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Journal of Advanced Ceramics 2022年第9期11卷 1375-1382页

作者： Xiaolang WU Jin ZHAO Shunzo SHIMAI Xiaojian MAO jian ZHANG Shiwei wang State Key Laboratory of High Performance Ceramics and Superfine Microstructure Shanghai Institute of CeramicsChinese Academy of SciencesShanghai 200050China Center of Materials Science and Optoelectronics Engineering University of Chinese Academy of SciencesBeijing 100049China

A green body with a density as high as possible is critical to diminish the crisis of deformation or cracking when large-size parts are ***,a new method,i.e.,re-fluidising the aged ceramic gel is developed to prepare the high-density green *** slurry with 56 vol%solid loading and copolymers of isobutylene and maleic anhydride were aged without vaporisation and re-fluidised by non-intrusive shearing after removing the exuded *** re-fluidised slurry was *** resultant wet gel was dried and deboned at a low *** relative density of the obtained green body was 64.6%,1.5%higher than that without aging and *** linear sintering shrinkage of the body decreased by 0.7%.The enhanced green density is explained from the viewpoint of the solid loading and the structure of the slurry.

关键词： high density green body re-fluidising alumina colloid formation

维普期刊数据库评论

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谷子AGO基因家族全基因组鉴定及特征分析

中国草地学报 2024年第4期46卷 1-10页

作者：郭晓燕宋健员世宇王宏丽杨成元张鑫山西农业大学经济作物研究所山西太原030031

阿尔戈蛋白(Argonaute proteins,AGO proteins)作为一种高度保守的RNA诱导沉默复合物,与基因转录和转录后沉默有关。目前,植物AGO基因功能的研究主要集中在拟南芥和水稻,对谷子AGO基因功能尚无文献报道。本研究利用生物信息学方法在谷... 详细信息

阿尔戈蛋白(Argonaute proteins,AGO proteins)作为一种高度保守的RNA诱导沉默复合物,与基因转录和转录后沉默有关。目前,植物AGO基因功能的研究主要集中在拟南芥和水稻,对谷子AGO基因功能尚无文献报道。本研究利用生物信息学方法在谷子全基因组中鉴定出15个具有保守结构域和位置顺序的家族成员,分布在7条染色体上,其编码的蛋白质长度在862~1148 aa之间。系统进化分析显示,谷子AGOs蛋白分布在3个进化分支,与拟南芥相比,家族成员数量有所扩展;组织表达特异性分析表明,谷子AGOs大部分基因在穗部表达强烈,推测其参与生殖发育基因调控;蛋白互作结果预测显示,所有谷子AGOs蛋白都与三种蛋白质相互作用,其中DNA介导的RNA聚合酶v亚单位1已被证明与转录水平基因沉默有关。表明AGO基因在谷子进化过程中结构和功能保守,可为谷子AGO基因家族成员的功能研究提供理论基础。

关键词：谷子 AGOs 全基因组鉴定生物信息学分析

An efficient and modular modeling for launch dynamics of tubed rockets on a moving launcher

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Defence Technology（防务技术） 2021年第6期17卷 2011-2026页

作者： Qin-bo Zhou Xiao-ting Rui Guo-ping wang jian-shu Zhang Institute of Launch Dynamics Nanjing University of Science and TechnologyNanjingJiangsu Province210094PR China

This paper develops a modular modeling and efficient formulation of launch dynamics with marching fire(LDMF)using a mixed formulation of the transfer matrix method for multibody systems(MSTMM)and Newton-Euler *** a ground-borne multiple launch rocket systems(MLRS),the focus is on the launching subsystem comprising the rocket,flexible tube,and tube *** launching subsystem is treated as a coupled rigid-flexible multibody system,where the rocket and tube tail are treated as rigid bodies while the flexible tube as a beam with large ***,the tube and tube tail can be elegantly handled by the MSTMM,a computationally efficient order-N ***,the equation of motion of the in-bore rocket with relative kinematics *** tube using the Newton-Euler method is ***,the rocket,tube,and tube tail dynamics are coupled,yielding the equation of motion of the launching subsystem that can be regarded as a building block and further integrated with other *** deduced dynamics equation of the launching subsystem is not limited to ground-borne MLRS but also fits for tanks,self-propelled artilleries,and other air-borne and naval-borne weapons undergoing large *** simulation results of LDMF are given and partially verified by the experiment.

关键词： Launch dynamics Marching fire Transfer matrix method for multibody systems Multiple launch rocket system

PSLDA:a novel supervised pseudo document-based topic model for short texts

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Frontiers of Computer Science 2022年第6期16卷 71-80页

作者： Mingtao SUN Xiaowei ZHAO Jingjing LIN jian JING Deqing wang Guozhu JIA School of Economics and Management Beihang UniveristyBeijing100191China School of Computer Science Beihang UniversityBeijing100191China School of Instrumentation and Optoelectronic Engineering Beihang UniversityBeijing100191China

Various kinds of online social media applications such as Twitter and Weibo,have brought a huge volume of short ***,mining semantic topics from short texts efficiently is still a challenging problem because of the sparseness of word-occurrence and the diversity of *** address the above problems,we propose a novel supervised pseudo-document-based maximum entropy discrimination latent Dirichlet allocation model(PSLDA for short).Specifically,we first assume that short texts are generated from the normal size latent pseudo documents,and the topic distributions are sampled from the pseudo *** this way,the model will reduce the sparseness of word-occurrence and the diversity of topics because it implicitly aggregates short texts to longer and higher-level pseudo *** make full use of labeled information in training data,we introduce labels into the model,and further propose a supervised topic model to learn the reasonable distribution of *** experiments demonstrate that our proposed method achieves better performance compared with some state-of-the-art methods.

关键词： supervised topic model short text pseudo-document

Field measurement and evaluation of vibration in different areas of a metro depot

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Earthquake Engineering and Engineering Vibration 2022年第2期21卷 529-542页

作者： Feng Qingsong Zhang Yunlai jiang jian wang Ziyu Lei Xiaoyan Zhang Ling Engineering Research Center of Railway Environment Vibration and Noise Ministry of EducationEast China Jiaotong UniversityNanchang 330013China Institute of Sound and Vibration Research University of SouthamptonHighfieldSouthamptonHampshire SO171BJUK

This paper presents a study of the characteristics of a railway vibration at three key sections containing different track structures in a metro *** results show that the vertical and horizontal vibration acceleration levels are proportional to train *** Z-weighted vertical acceleration levels obtained showed that the vibration source strengths at the ballast foot of the testing line and the throat area were very *** vibration attenuation at the repair line was larger than that of the testing *** the throat area,the peak frequency of vibration obtained at the ballast foot(2.5 m)could be shifted to a lower frequency band by using polyurethane sleepers instead of standard concrete *** sleepers can help to reduce vertical vibration in a frequency band of 0-10 *** vibration levels would satisfy the limits given in the ISO2631-2-2003(2013)for any location more than 5 m away from the source at the testing line and 2.5 m away from the source at the repair line and throat area.

关键词： field measurement metro depot peak frequency vibration acceleration environmental impacts

新型工业化的发展概况、系统组成与未来策略研究

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新型工业化理论与实践 2024年第2期1卷 51-62页

作者：王健柳雅文安实潘玥如哈尔滨工业大学经济与管理学院黑龙江哈尔滨150001

全面探讨了新型工业化的发展现状、系统构成及未来策略,旨在为我国工业化进程提供理论与实践指导。新型工业化是推动我国高质量发展的核心,涉及技术、经济的革新及文化、价值观的转变。详细分析了新型工业化在创新驱动、绿色可持续性、... 详细信息

全面探讨了新型工业化的发展现状、系统构成及未来策略,旨在为我国工业化进程提供理论与实践指导。新型工业化是推动我国高质量发展的核心,涉及技术、经济的革新及文化、价值观的转变。详细分析了新型工业化在创新驱动、绿色可持续性、信息化及数字化方面的特点与优势,并探讨了技术创新、全球合作与竞争、资源限制、人才培养等挑战。通过系统动力学视角,构建了包括经济、技术、社会、环境和资源在内的五个子系统,分析了它们的特性和运作机制。最终提出了一系列针对这些子系统的具体策略和建议,包括加强科技创新、推动工业绿色转型、促进信息化与工业化深度融合、建立多元化融资渠道、优化人才体系及加强产业链和供应链的升级,以实现工业进程的持续、健康发展,推进新型工业化的高质量、可持续发展。

关键词：新型工业化系统构成系统动力学发展策略