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销售、回收渠道差异与闭环供应链决策

控制工程 2021年第4期28卷 708-716页

作者：陈梦泽公彦德南京理工大学经济管理学院江苏南京210094 南京审计大学商学院江苏南京211815

在制造商主导下,研究了单渠道销售且销售商独立回收,双渠道销售且销售商与第三方共同回收下的企业决策及供应链稳定性。分析发现,相较于单一销售和回收渠道,当闭环供应链系统内存在混合渠道时,销售商回收价格增加而回收量减少,闭环供应... 详细信息

在制造商主导下,研究了单渠道销售且销售商独立回收,双渠道销售且销售商与第三方共同回收下的企业决策及供应链稳定性。分析发现,相较于单一销售和回收渠道,当闭环供应链系统内存在混合渠道时,销售商回收价格增加而回收量减少,闭环供应链系统的回收量与回收价差敏感系数密切相关。制造商与销售商的最优销售策略均为共同销售,正向供应链长期稳定。当消费者对回收价差敏感度较低时,销售商选择与第三方共同回收;当消费者对回收价差较敏感时,逆向供应链有断裂风险;当回收价差敏感度过高时,参与企业的最优回收策略均为销售商独立回收,逆向供应链长期稳定。

关键词：闭环供应链销售渠道回收渠道渠道竞争供应链稳定性

基于霍布金森压杆的砂岩动态力学特性数值模拟研究

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硅酸盐通报 2019年第9期38卷 2955-2959页

作者：杨逾杨梦泽辽宁工程技术大学土木工程学院

以砂岩为研究对象,采用ANSYS/LS-DYNA软件建立分离式霍布金森压杆数值模型,模拟砂岩在不同应变率及应力波加载次数下的冲击过程。研究结果表明:随着应力波的传递,砂岩表现为三种破坏模式:张应变破坏、沿径向劈裂拉伸破坏、压碎破坏阶段... 详细信息

以砂岩为研究对象,采用ANSYS/LS-DYNA软件建立分离式霍布金森压杆数值模型,模拟砂岩在不同应变率及应力波加载次数下的冲击过程。研究结果表明:随着应力波的传递,砂岩表现为三种破坏模式:张应变破坏、沿径向劈裂拉伸破坏、压碎破坏阶段;随着应变率的增大,动态峰值应力和峰值应变也随之增大;应变率一定时,随着应力波加载次数的增加,岩样的入射能、反射能、耗散能都呈现减小的趋势,而总耗能却表现为逐渐增大。

关键词：动荷载分离式霍布金森压杆应变率应力波加载次数 ANSYS/LS-DYNA

Products of Commutator Ideals of Some Lie-admissible Algebras

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Acta Mathematica Sinica,English Series 2024年第8期40卷 1875-1892页

作者： Ivan KAYGORODOV Farukh MASHUROV Tran Giang NAM ze Rui ZHANG CMA-UBI Universidade da Beira InteriorCovilhaPortugal Shenzhen International Center for Mathematics(SICM) Southern University of Science and TechnologyShenzhen 518055P.R.China Institute of Mathematics VAST18 Hoang Quoc VietCau GiayHanoiVietnam School of Mathematical Sciences South China Normal UniversityGuangzhou 510631P.R.China

In this article,we mainly study the products of commutator ideals of Lie-admissible algebras such as Novikov algebras,bicommutative algebras,and assosymmetric *** precisely,we first study the properties of the lower central chains for Novikov algebras and bicommutative *** we show that for every Lie nilpotent Novikov algebra or Lie nilpotent bicommutative algebra A,the ideal of A generated by the set{ab−ba|a,b∈A}is ***,we study properties of the lower central chains for assosymmetric algebras,study the products of commutator ideals of assosymmetric algebras and show that the products of commutator ideals have a similar property as that for associative algebras.

关键词： Novikov algebra bicommutative algebra assosymmetric algebra Lie nilpotent algebra

O_3/UV工艺处理罗丹明B染料废水的研究

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现代化工 2019年第1期39卷 180-183,185页

作者：张秀赵泽盟邵磊北京化工大学有机无机复合材料国家重点实验室北京100029 北京化工大学教育部超重力工程研究中心北京100029 中煤能源研究院有限责任公司陕西西安710054

以超重力旋转填充床(RPB)为反应装置,研究了O_3/UV工艺处理罗丹明B染料废水的效果。考察了旋转填充床转速、液体流量、催化剂P25质量浓度、臭氧质量浓度等因素对脱色率和COD去除率的影响。结果表明,随着旋转填充床转速、液体循环量、催... 详细信息

以超重力旋转填充床(RPB)为反应装置,研究了O_3/UV工艺处理罗丹明B染料废水的效果。考察了旋转填充床转速、液体流量、催化剂P25质量浓度、臭氧质量浓度等因素对脱色率和COD去除率的影响。结果表明,随着旋转填充床转速、液体循环量、催化剂P25质量浓度以及臭氧质量浓度的增加,罗丹明B废水的处理效果增加;当温度为25℃、液体体积为2 L、RPB转速为1 000 r/min、废水pH为4、气体体积流量为150 L/h、液体循环量为30 L/h、臭氧质量浓度为35 mg/L、催化剂P25质量浓度为400 mg/L时,罗丹明B废水经处理20 min后脱色率和COD去除率分别可达100%和40%。

关键词：旋转填充床罗丹明B O3/UV 化学需氧量

Atomic-scale mechanism of effect of co-separation of elements at interface of ferrite and austenite on Cr-depleted zone of duplex stainless steel

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Journal of Iron and Steel Research International 2024年第3期31卷 710-718页

作者： Yan-hui Hou ze-kun Xu Shi-long Zhou Guang-qiang Li The State Key Laboratory of Refractories and Metallurgy Wuhan University of Science and TechnologyWuhan 430081HubeiChina Key Laboratory for Ferrous Metallurgy and Resources Utilization of Ministry of Education Wuhan University of Science and TechnologyWuhan 430081HubeiChina

Three-dimensional atom-probe tomography and first-principles calculation combined with density functional theory were used to study the effect of the co-segregation of different elements formed during the solidification process of S32205 duplex stainless steel on the Cr-depleted zone at the interface between ferrite and *** was found that the co-segregation of different elements formed during the solidification process of duplex stainless steel can also form Cr-depleted zone at the interface between ferrite and ***,Mo,Si,B,C and P atoms promote co-segregation with Cr atoms,which promotes the formation of Cr-depleted zone at the interface between ferrite and austenite in duplex stainless *** and Si strongly promote the segregation of Cr at the interface between ferrite and austenite,thereby promoting the formation of Cr-depleted zone.B,C and P elements also promote the segregation of Cr element at the interface between ferrite and austenite and the formation of Cr-depleted zone,but their effect is weaker than that of Mo and Si *** conclusions provide a new theoretical basis for improving the intergranular corrosion performance of duplex stainless steel.

关键词： Duplex stainless steel Cr-depleted zone Intergranular corrosion Co-segregation First-principles calculation

Effect of FeSi additive in dual-chamber sample cup on thermal analysis characteristic values and vermiculating rate of compacted graphite iron

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China Foundry 2024年第1期21卷 91-100页

作者： De-quan Shi ze-yu Liu Gui-li Gao Yi-cheng Feng School of Materials and Chemistry University of Shanghai for Science and TechnologyShanghai 200093China School of Materials Science and Chemical Engineering Harbin University of Science&TechnologyHarbin 150040China School of Mechanical and Energy Engineering Shanghai Technical Institute of Electronics and InformationShanghai 201411China

Thermal analysis plays a key role in the online inspection of molten iron *** solidification process of molten iron can be reflected by thermal analysis curves,and silicon is one of important elements affecting the solidification of molten *** this study,FeSi75 was added in one chamber of the dual-chamber sample cup,and the influences of FeSi75 additive on the characteristic values of thermal analysis curves and vermiculating rate were *** results show that with the increase of FeSi75,the start temperature of austenite formation TALfirstly decreases and then increases,but the start temperature of eutectic growth TSEF,the lowest eutectic temperature TEU,temperature at maximum eutectic reaction rate TEM,and highest eutectic temperature TERkeep always an *** temperature at final solidification point TEShas little *** FeSi75 additive has different influences on the vermiculating rate of molten iron with different vermiculation,and the vermiculating rate increases for lower vermiculation molten iron while decreases for higher *** to the thermal analysis curves obtained by a dual-chamber sample cup with 0.30wt.%FeSi75 additive in one chamber,the vermiculating rate of molten iron can be evaluated by comparing the characteristic values of these *** time differenceΔtERcorresponding to the highest eutectic temperature TERhas a closer relationship with the vermiculating rate,and a parabolic regression curve between the time differenceΔtERand vermiculating rateηhas been obtained within the range of 65%to 95%,which is suitable for the qualified melt.

关键词： FeSi75 additive characteristic value vermiculating rate thermal analysis compacted graphite iron

N-acetylserotonin alleviates retinal ischemia-reperfusion injury via HMGB1/RAGE/NF-κB pathway in rats

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International Journal of Ophthalmology(English edition) 2024年第2期17卷 228-238页

作者： Yu-ze Zhao Xue-Ning Zhang Yi Yin Pei-Lun Xiao meng Gao Lu-Ming Zhang Shuan-Hu Zhou Shu-Na Yu Xiao-Li Wang Yan-Song Zhao Department of Ophthalmology Affiliated Hospital of Weifang Medical UniversityWeifang 261031Shandong ProvinceChina School of Medical Imaging Weifang Medical UniversityWeifang 261053Shandong ProvinceChina Department of Anatomy Weifang Medical UniversityWeifang 261053Shandong ProvinceChina Departments of Orthopedic Surgery Brigham and Women’s HospitalHarvard Medical SchoolBostonMA 02115USA

AIM:To observe the effects of N-acetylserotonin(NAS)administration on retinal ischemia-reperfusion(RIR)injury in rats and explore the underlying mechanisms involving the high mobility group box 1(HMGB1)/receptor for advanced glycation end-products(RAGE)/nuclear factor-kappa B(NF-κB)signaling ***:A rat model of RIR was developed by increasing the pressure of the anterior chamber of the *** male Sprague Dawley were randomly divided into five groups:sham group(n=8),RIR group(n=28),RIR+NAS group(n=28),RIR+FPS-ZM1 group(n=8)and RIR+NAS+FPS-ZM1 group(n=8).The therapeutic effects of NAS were examined by hematoxylin-eosin(H&E)staining,and retinal ganglion cells(RGCs)*** expression of interleukin 1 beta(IL-1β),HMGB1,RAGE,and nod-like receptor 3(NLRP3)proteins and the phosphorylation of nuclear factorkappa B(p-NF-κB)were analyzed by immunohistochemistry staining and Western blot *** expression of HMGB1 protein was also detected by enzyme-linked immunosorbent assay(ELISA).RESULTS:H&E staining results showed that NAS significantly reduced retinal edema and increased the number of RGCs in RIR *** NAS therapy,the HMGB1 and RAGE expression decreased significantly,and the activation of the NF-κB/NLRP3 pathway was antagonized along with the inhibition of p-NF-κB and NLRP3 protein ***,NAS exhibited an anti-inflammatory effect by reducing IL-1β*** inhibitory of RAGE binding to HMGB1 by RAGE inhibitor FPS-ZM1 led to a significant decrease of p-NF-κB and NLRP3 expression,so as to the IL-1βexpression and retinal edema,accompanied by an increase of RGCs in RIR ***:NAS may exhibit a neuroprotective effect against RIR via the HMGB1/RAGE/NF-κB signaling pathway,which may be a useful therapeutic target for retinal disease.

关键词： retinal diseases retinal ischemia—reperfusion injury N-acetylserotonin high mobility group box 1 receptor for advanced glycation end-products nuclear factor-κB rats

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车辆视频检测及阴影去除

计算机工程与设计 2011年第6期32卷 2072-2074,2079页

作者：杨丹余孟泽四川大学图形图像研究所四川成都610064

针对智能交通系统的车辆检测问题,提出了一种运动车辆检测及阴影去除的方法。采用基于背景差与帧间差的方法来检测运动视频中的车辆,对背景差和帧间差检测出的车辆进行或运算得到运动目标。再对检测出的运动目标进行形态学处理,并结合... 详细信息

针对智能交通系统的车辆检测问题,提出了一种运动车辆检测及阴影去除的方法。采用基于背景差与帧间差的方法来检测运动视频中的车辆,对背景差和帧间差检测出的车辆进行或运算得到运动目标。再对检测出的运动目标进行形态学处理,并结合色彩及阴影统计信息建立阴影模型,去除阴影。实验结果表明,该方法能够快速、准确地在动态视频中分割出运动车辆和阴影。

关键词：车辆检测背景模型帧间差智能交通系统阴影去除

“忧生”“忧世”,“祛魅”“返魅”——王国维的诗情与诗学管窥

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中国韵文学刊 2005年第4期19卷 27-35页

作者：孟泽中南大学外语学院湖南长沙410075

作为诗情的“忧生”,在王国维的创作与命意中虽然有新的内涵,但它与同样作为诗情的“忧世”是共生互动的,并不能以此作为区别王国维诗情和诗学的现代性质与古典品格的标志。与此相一致的是,王国维的学术历程同时显示出“祛魅”“返魅”... 详细信息

作为诗情的“忧生”,在王国维的创作与命意中虽然有新的内涵,但它与同样作为诗情的“忧世”是共生互动的,并不能以此作为区别王国维诗情和诗学的现代性质与古典品格的标志。与此相一致的是,王国维的学术历程同时显示出“祛魅”“返魅”的双重性,他的创作以及诗学取径,也必须从这种双重性中,才可以得到完全的理解。

关键词：王国维忧生忧世祛魅返魅诗情诗学