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Transient process of methane-oxygen diffusion flame-street establishment in a microchannel

Frontiers in Energy 2022年第6期16卷 988-999页

作者： xin KANG yu WANG School of Civil Engineering and Architecture Wuhan University of TechnologyWuhan 430070China School of Automotive Engineering Wuhan University of TechnologyWuhan 430070China

“Flame-street”is an interesting diffusion flame behavior in which a series of flame-segments is separately distributed along the mixing layer in a narrow *** experimental phenomenon was experimentally and numerically investigated with the focus on the steady-state,thermo-chemical flame structures in previous *** the present paper,the dynamic formation process of a methane-oxygen diffusion flame-street structure was simulated with a reacting flow solver developed based on the open-source framework *** imposing a certain amount of ignition-energy near the channel outlet,a reaction-kernel was formed and ***,three separate flames were consecutively generated from this kernel and propagated within the *** whole process was completed within 15 ms and all the discrete flames were eventually in a ***,different propagation features were observed for the three flame segments:The leading flame experienced a flame shape/type change from a tribrachial structure in its fastpropagating phase to a long,trailing diffusion tail after being anchored to the *** successive flame had a much lower propagation speed,keeping its two wing-like(fuel-lean premixed and fuel-rich premixed)structure while moving toward its stabilization location,which was approximately in the middle of the *** last flame,after the ignition source was turned-off,was immediately convected a bit downstream,and eventually featured a similar two-branch-like structure as the second ***,chemical insights for the premixed and diffusion branches of the leading flame were also provided with the change of significance of some key elementary reactions focused on,in order to attain a detailed profiling of the flame-type *** paper is a first-ever one discussing the transient formation of flame-streets in literature and is believed to be useful for obtaining a comprehensive understanding of this unique flame characte

关键词： micro-combustion flame-street diffusion flame mixing layer flame propagation speed

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Fe_(0.8)CoSe_(2) nanosphere coated by N-doped carbon for ultra- high rate potassium selenium battery

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Rare Metals 2021年第9期40卷 2455-2463页

作者： xin-xin Jia xin-Zhi yu Bing-An Lu Key Laboratory for Micro/Nano Optoelectronic Devices of Ministry of Education&Hunan Provincial Key Laboratory of Low-Dimensional Structural Physics and Devices School of Physics and ElectronicsHunan UniversityChangsha 410082China

Potassium-selenium(K-Se) batteries are a promising electrical energy storage candidate because of the cost-effectiveness and material sustainability, yet they suffer from shuttle effect, volume expansion and low powder density. The development of Se-based cathode is an effective way to overcome the above issues. Here we designed a hollow nano-spherical Co-Fe bi-metallic selenide coated with N-doped carbon(denoted as CFS@N-C)as cathode for K-Se batteries. Bimetallic selenide is benefit to improve the conductivity of composite materials;N-doped carbon layer encapsulation effectively inhibits the dissolution of poly-selenides and relieves the volume expansion. The as-prepared K-Se battery exhibits excellent rate performance(300 mAh·g^(-1) at 1000 mA·g^(-1)) and slowcharge/ultrafast-dischargecapability(dischargeat5000 mA·g^(-1) and charge at 100 mA·g^(-1) with ultrahigh capacity of 227 mAh·g^(-1)) with Coulombic efficiency nearly 100%. In addition, the ex-situ high-resolution transmission electron microscopy(HRTEM) images reveal that the charge–discharge mechanism of CFS@N-C is K^(+) replaces the bimetal and forms K_(2)Se. The unique design in this work may provide certain directions on researching for high power density K-storage materials.

关键词： Potassium selenium battery High powder density Excellent rate performance Inhibit shuttle effects Tolerate volume changes

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演化博弈模型下我国光伏发电市场规模分析

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新疆师范大学学报（自然科学版） 2025年第1期44卷 63-71页

作者：王林忻雨安徽财经大学统计与应用数学学院安徽蚌埠233041

针对中国光伏发电市场规模情况,文章通过定义光伏原材料供应商、光伏原材料分销商、政府和光伏发电企业四方参与者的策略选择,利用复制动态方程构建四方演化博弈模型,分析在不同战略选择下每个参与者之间的收益和成本,并对微分方程稳定... 详细信息

针对中国光伏发电市场规模情况,文章通过定义光伏原材料供应商、光伏原材料分销商、政府和光伏发电企业四方参与者的策略选择,利用复制动态方程构建四方演化博弈模型,分析在不同战略选择下每个参与者之间的收益和成本,并对微分方程稳定性原理和光伏市场中参与者策略之间的动态关系进行数据仿真。研究发现:(1)分销商需要筛选优质产品并提高鉴别能力,从而减少与不守规矩的生产商合作的可能性;(2)企业的维权行为对分销商和政府采取的政策具有积极影响;(3)政府在处理产品质量问题时需要采取多种措施进行综合治理。本研究有助于光伏产业参与者和政策制定者更好地了解市场动态,制定有效的政策和战略。

关键词：光伏发电市场演化博弈策略选择可持续发展

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结直肠腺癌组织PRRX1蛋白表达及其与微卫星不稳定性的关系分析

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罕少疾病杂志 2025年第1期32卷 130-132页

作者：谷心语南阳医学高等专科学校第一附属医院病理科河南南阳473007

目的探讨结直肠腺癌组织配对相关同源框1(PRRX1)蛋白表达及其与微卫星不稳定性(MSI)的关系。方法回顾性分析本院2020年10月至2022年12月收治的168例结直肠腺癌患者的临床资料,均于术中留取结直肠腺癌组织与癌旁正常组织(距癌≥5cm)。采... 详细信息

目的探讨结直肠腺癌组织配对相关同源框1(PRRX1)蛋白表达及其与微卫星不稳定性(MSI)的关系。方法回顾性分析本院2020年10月至2022年12月收治的168例结直肠腺癌患者的临床资料,均于术中留取结直肠腺癌组织与癌旁正常组织(距癌≥5cm)。采用免疫组织化学法检测结直肠腺癌组织和相应癌旁正常组织中PRRX1蛋白表达,并分析PRRX1蛋白表达与临床病理特征的关系。采用PCR法检测结直肠腺癌组织MSI情况,并将其分为微卫星高度不稳定(MSI-H)、微卫星低度不稳定(MSI-L)、微卫星稳定(MSS)3组,比较PRRX1蛋白在3组中.的表达情况。采用Spearman分析结直肠腺癌患者PRRX1蛋白表达与MSI的关系。结果结直肠腺癌组织中PRRX1蛋白阳性表达率高于癌旁正.常组织(P<005)。低分化、临床分期为Ⅲ+Ⅳ期、淋巴结转移患.者的PRRX1蛋白阳性表.达率高于中高分化、临.床分期为Ⅰ+Ⅱ期、无淋巴结转移患者(P<005)。16.8例结直肠腺癌患者中,经检测判定为MSS120例(7143%),MSI-H28例.(1667%).,MSI-L20例(1190%);MSI-H组PRRX1阳性表达率高于MSS组(P<005);经Spearman分析结果显示,PRRX1蛋白表达与MSI呈正相关(r=0568,P=0023)。结论PRRX1蛋白在结直肠腺癌组织中高表达,与患者肿瘤分化程度、临床分期、是否存在淋巴结转移有关,且与患者MSI的发生密切相关。

关键词：结直肠腺.癌配对相关同源框1 微卫星不稳定性相关性

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A computational study of the wing-wing and wing-body interactions of a model insect

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Acta Mechanica Sinica 2009年第4期25卷 421-431页

作者： xin yu Mao Sun Institute of Applied Physics and Computational Mathematics Beihang University 100191 Beijing China Institute of Fluid Mechanics Beihang University 100191 Beijing China

The aerodynamic interaction between the contralateral wings and between the body and wings of a model insect are studied, by using the method of numerically solving the Navier-Stokes equations over moving overset grids, under typical hovering and forward flight conditions. Both the interaction between the contralateral wings and the interaction between the body and wings are very weak, e.g. at hovering, changes in aerodynamic forces of a wing due to the present of the other wing are less than 3% and changes in aerodynamic forces of the wings due to presence of the body are less than 2%. The reason for this is as following. During each down- or up-stroke, a wing produces a vortex ring, which induces a relatively large jet-like flow inside the ring but very small flow outside the ring. The vortex rings of the left and right wings are on the two sides of the body. Thus one wing is outside vortex ring of the other wing and the body is outside the vortex rings of the left and right wings, resulting in the weak interactions.

关键词： Insect Aerodynamics Wing/winginteraction Wing/body interaction

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Mapping the trends and prospects of battery cathode materials based on patent landscape

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Frontiers in Energy 2023年第6期17卷 822-832页

作者： Chen YANG xin-yu MU School of Japanese culture and Economy Xi’an International Studies UniversityXi’an 710128China The Northeast Asian Research Center Xi’an International Studies UniversityXi’an 710128China

Advancing portable electronics and electric vehicles is heavily dependent on the cutting-edge lithium-ion (Li-ion) battery technology, which is closely linked to the properties of cathode materials. Identifying trends and prospects of cathode materials based on patent analysis is considered a kernel to optimize and refine battery related markets. In this paper, a patent analysis is performed on 6 popular cathode materials by comprehensively considering performance comparison, development trend, annual installed capacity, technology life cycle, and distribution among regions and patent assignees. In the technology life cycle, the cathode materials majorly used in electric vehicle have entered maturity stage, while the lithium cobalt oxide (LCO) cathode that is widely used in portable electronics is still in the growth stage. In global patent distributions, China holds more than 50% of total patents. In the top 10 patent assignees of 6 cathode materials, 2 institutes are from China with the rest being Japan (6) and Republic of Korea (2), indicating that the technology of cathode materials in China is relatively scattered while cathode research is highly concentrated in Japan and Republic of Korea. Moreover, the patent distribution has to consider practical issues as well as the impacts of core patents. For example, the high cost discourages the intention of applying international patents. This paper is expected to stimulate battery research, understand technical layout of various countries, and probably forecast innovative technology breakthroughs.

关键词： patent analysis cathode batteries technology life cycle

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Mechanism of action of Linggui Zhugan Decoction in treating non-alcoholic fatty liver disease using untargeted metabolomics approach

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Traditional Medicine Research 2025年第2期10卷 65-76页

作者： Huan Pei Ren-Lin Li xin-Ran Song Qian-Qian Wan yu-Ming Wang Han-Zhou Li Wei-Quan Xu Jia-Bao Liao Wei-Bo Wen Jing Miao Huan-Tian cui School of Basic Medicine Yunnan University of Chinese MedicineKunming 650599China School Clinical Medical College Yunnan University of Chinese MedicineKunming 650599China First School of Clinical Medicine Yunnan University of Chinese MedicineKunming 650599China School of Integrative Chinese and Western Medicine Tianjin University of Traditional Chinese MedicineTianjin 301617China Department of Pharmacy Tianjin Second People's HospitalTianjin 300192China

Background:Non-alcoholic fatty liver disease(NAFLD)is a liver disorder characterized by the accumulation and degeneration of fat in the liver cells,a condition that may further deteriorate and lead to cirrhosis and liver *** studies showed that metabolic dysfunction can promote NAFLD *** Zhugan Decoction(LGZGD)has therapeutic effects on *** mechanism of LGZGD still remains *** study was to examine the impact of LGZGD on the metabolic processes involved in the development of ***:A mice model of NAFLD was treated with *** therapeutic potential of LGZGD was evaluated by assessing the activity of transaminases,lipids levels of blood,and pathological changes in the liver of the mice model of ***,this study also evaluated the influence of LGZGD on liver inflammation and oxidative ***:The results of untargeted metabolomics analysis showed that LGZGD reduced the disordered lipid metabolism in NAFLD *** improved the oxidative stress and also reduced the levels of pro-inflammatory cytokines in the *** metabolomics analysis of liver samples revealed that LGZGD treatment improved metabolic disorders,including alanine,aspartate,glutamate,glycerophospholipid metabolism,and citrate *** RT-qPCR and Western blot results showed that LGZGD could regulate the expression of key enzymes in the metabolic pathway of the citrate cycle,including ATP-citrate lyase(ACLY),alanine-glyoxylate aminotransferase-2(AGXT2),phosphatidylethanolamine N-methyltransferase(PEMT),and succinate dehydrogenase(SDH).Conclusion:We found that LGZGD can treat NAFLD by reducing inflammatory responses,inhibiting oxidative stress,regulating alanine,aspartate,glutamate,and glycerophospholipid metabolism,and citrate cycle pathways.

关键词： NAFLD LGZGD untargeted metabolomics glycerophospholipid metabolism citrate cycle

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应急一体化管理、区域竞争力与城市韧性提升路径研究

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灾害学 2025年第1期40卷 146-152页

作者：窦路遥魏凤邓阿妹辛竹琳冯宇中国科学院武汉文献情报中心湖北武汉430071 中国科学院大学经济与管理学院信息资源管理系北京100190 科技大数据湖北省重点实验室湖北武汉430071 重庆大学经济与工商管理学院重庆400044

城市韧性建设关键在应急一体化管理和区域竞争力。有助于城市群高质量发展和减少灾害损失。该文基于组态思维整合应急一体化管理和区域竞争力9个相关要素,探讨影响城市韧性提升的多重并发因素和复杂因果机制。研究发现:①应急一体化管... 详细信息

城市韧性建设关键在应急一体化管理和区域竞争力。有助于城市群高质量发展和减少灾害损失。该文基于组态思维整合应急一体化管理和区域竞争力9个相关要素,探讨影响城市韧性提升的多重并发因素和复杂因果机制。研究发现:①应急一体化管理从成本可控性、资源协同性和政策支持性上影响城市韧性的提升,形成突发事件的事前预防、事中调配和事后恢复的逻辑闭环;而区域竞争力也分别从经济、发展、交易、生活层面上实现对城市韧性的综合描述。②高城市韧性组态分为强竞争力预防型、损失应激预防型、营商优化建设型、宜居持续建设型、政策支持拔高型,低城市韧性组态分为管理效能欠缺型和应急损失过度型。③在受损可控的范围内,灾害损失的出现反而可能在应急实践中促进韧性提升;过高的管理型支出会出现管理无效率的可能,而过低的管理型支出会出现管理失调的可能,都会产生抑制城市韧性的效果。

关键词：应急一体化管理区域竞争力城市韧性 fsQCA

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基于乳脂肪球膜结构以提高液态乳体系的稳定性:乳脂肪球膜构建机制综述

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食品科学 2025年第2期46卷 308-316页

作者：王鑫于景华赵亭亭刘晓辉天津科技大学食品科学与工程学院食品营养与安全国家重点实验室天津300457 河北省功能油脂微胶囊化技术创新中心河北石家庄052160

乳脂肪球起源于乳腺上皮细胞,脂肪球膜中的脂质和蛋白质通过静电斥力和空间位阻维持脂肪球的稳定性,同时膜上的成分具有特定的营养特性。脂肪球界面的重新构建对液态乳制品的品质至关重要,本文对近年来加工中乳脂肪球界面构建机制的研... 详细信息

乳脂肪球起源于乳腺上皮细胞,脂肪球膜中的脂质和蛋白质通过静电斥力和空间位阻维持脂肪球的稳定性,同时膜上的成分具有特定的营养特性。脂肪球界面的重新构建对液态乳制品的品质至关重要,本文对近年来加工中乳脂肪球界面构建机制的研究进行总结并发掘共通之处。均质会破坏脂肪球膜的原生结构,导致膜结构重新排列。此外,热处理也会改变蛋白质的结构,并引起脂质结构域的侧向分离。同时,脂肪球膜上蛋白质和脂质的热响应会导致原始膜成分的损失。外源添加物通过改善油水界面和增强脂肪球的稳定性,参与体系稳定化的重构建。未来需深入研究脂肪球膜构建机制与宏观体系的联系,并优化特定的加工条件,以获得更高品质的乳制品。

关键词：脂肪球脂肪球膜脂肪球膜蛋白脂质域重构建

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Reachability of Patterned Conditional Pushdown Systems

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Journal of Computer Science & Technology 2020年第6期35卷 1295-1311页

作者： xin Li Patrick Gardy yu-xin Deng Hiroyuki Seki Shanghai Key Laboratory of Trustworthy Computing East China Normal UniversityShanghai 200062China Graduate School of Informatics Nagoya UniversityNagoya 464-8601Japan

Conditional pushdown systems (CPDSs) extend pushdown systems by associating each transition rule with a regular language over the stack alphabet. The goal is to model program verification problems that need to examine the run-time call stack of programs. Examples include security property checking of programs with stack inspection, compatibility checking of HTML5 parser specifications, etc. Esparza et al. proved that the reachability problem of CPDSs is EXPTIME-complete, which prevents the existence of an algorithm tractable for all instances in general. Driven by the practical applications of CPDSs, we study the reachability of patterned CPDS (pCPDS) that is a practically important subclass of CPDS, in which each transition rule carries a regular expression obeying certain patterns. First, we present new satura-tion algorithms for solving state and configuration reachability of pCPDSs. The algorithms exhibit the exponential-time complexity in the size of atomic patterns in the worst case. Next, we show that the reachability of pCPDSs carrying sim-ple patterns is solvable in fixed-parameter polynomial time and space. This answers the question on whether there exist tractable reachability analysis algorithms of CPDSs tailored for those practical instances that admit efficient solutions such as stack inspection without exception handling. We have evaluated the proposed approach, and our experiments show that the pattern-driven algorithm steadily scales on pCPDSs with simple patterns.

关键词： conditional pushdown system pattern reachability saturation algorithm

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