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D-CONVERGENCE OF ONE-LEG METHODS FOR STIFF DELAY DIFFERENTIAL EQUATIONS

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Journal of Computational Mathematics 2001年第6期19卷 601-606页

作者： cheng-ming Huang Shou-fu Li Hong-yuan Fu guang-nan chen Department of Mathematics Huazhong University of Science and TechnologyWuhan 430074China Department of Mathematics Xiangtan UniversityXiangtan 411105China Institute of Applied Physics and Computational Mathematics Beijing 100088China

Focuses on a study which explored the numerical solution of delay differential equations. Linear stability of numerical methods; Application of one-leg methods; Error analysis.

关键词： nonlinear delay differential equations one-leg methods D-convergence

D-CONVERGENCE OF RUNGE-KUTTA METHODS FOR STIFF DELAY DIFFERENTIAL EQUATIONS

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Journal of Computational Mathematics 2001年第3期19卷 259-268页

作者： cheng-ming Huang Hong-yuan Fu Shou-fu Li guang-nan chen Institute of Applied Mathematics Academy of Mathematics and Systems SciencesChinese Academy of SciencesBeijing 100080China Graduate School China Academy of Engineering PhysicsBeijing 100088China Institute for Computational and Applied Mathematics Xiangtan UniversityXiangtan 411105China Graduate School China Academy of Engineering PhysicsBeijing 100088China

Focuses on a study which examined the numerical solution of delay differential equations (DDE). Information on the Runge-Kutta methods for DDE; Results of the D-convergence analysis of Runge-Kutta methods; Details on ... 详细信息

关键词： delay differential equations Runge-Kutta methods D-convergence

Research on interfacial cracking of a Cr coating/steel substrate with and without laser pre-quenching treatment under thermal fatigue loading

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Research on interfacial cracking of a Cr coating/steel subst...

Hypoxia-preconditioned bone marrow-derived mesenchymal stem cells protect neurons from cardiac arrest-induced pyroptosis

第三届数字制造与自动化国际会议

作者： Ban-Quan Yang guang-nan chen Xue-Jun chen Wei-Hai Sun Hong-Qian chen Jing-Wen Pan Ying chen Division of Engineering Mechanics Department of Mechanical Engineering Academy of Armored Force Engineering Laboratory of surface modification Institute of mechanics Chinese Academy of Sciences School of Applied Sciences University of Science and Technology Beijing

The interfacial cracking behaviors of a chromium （Cr） coating/laser pre-quenched steel substrate system and a Cr coating/original steel substrate system under thermal fatigue loading were investigated in this work. The experiment results show that the Cr coating on the pre-quenched substrate surface exhibited a higher resistance of interfacial cracking than that of the Cr coating on the original substrate surface under the same loading condition. This indicates the technology of laser pre-quenching of steel substrate surface prior to plating the Cr coating can improve the interfacial adhesion properties between the coating and substrate.

关键词： Interfacial cracking Cr coating/laser pre-quenched steel substrate system Cr coating/original steel substrate system Thermal fatigue loading

来源： cnki会议评论

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cnki会议

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Neural Regeneration Research 2025年第4期20卷 1103-1123页

作者： Xiahong Tang nan Zheng Qingming Lin Yan You Zheng Gong Yangping Zhuang Jiali Wu Yu Wang Hanlin Huang Jun Ke Feng chen Shengli Clinical Medical College of Fujian Medical University Fujian Medical UniversityFuzhouFujian ProvinceChina Department of Emergency Fujian Provincial HospitalFuzhouFujian ProvinceChina Fujian Provincial Key Laboratory of Emergency Medicine FuzhouFujian ProvinceChina The Second Department of Intensive Care Unit Fujian Provincial Hospital South BranchFuzhouFujian ProvinceChina

Cardiac arrest can lead to severe neurological impairment as a result of inflammation,mitochondrial dysfunction,and post-cardiopulmonary resuscitation neurological *** preconditioning has been shown to improve migration and survival of bone marrow–derived mesenchymal stem cells and reduce pyroptosis after cardiac arrest,but the specific mechanisms by which hypoxia-preconditioned bone marrow–derived mesenchymal stem cells protect against brain injury after cardiac arrest are *** this end,we established an in vitro co-culture model of bone marrow–derived mesenchymal stem cells and oxygen–glucose deprived primary neurons and found that hypoxic preconditioning enhanced the protective effect of bone marrow stromal stem cells against neuronal pyroptosis,possibly through inhibition of the MAPK and nuclear factor κB ***,we transplanted hypoxia-preconditioned bone marrow–derived mesenchymal stem cells into the lateral ventricle after the return of spontaneous circulation in an 8-minute cardiac arrest rat model induced by *** results showed that hypoxia-preconditioned bone marrow–derived mesenchymal stem cells significantly reduced cardiac arrest–induced neuronal pyroptosis,oxidative stress,and mitochondrial damage,whereas knockdown of the liver isoform of phosphofructokinase in bone marrow–derived mesenchymal stem cells inhibited these *** conclude,hypoxia-preconditioned bone marrow–derived mesenchymal stem cells offer a promising therapeutic approach for neuronal injury following cardiac arrest,and their beneficial effects are potentially associated with increased expression of the liver isoform of phosphofructokinase following hypoxic preconditioning.

关键词： bone marrow–derived mesenchymal stem cells cardiac arrest cardiac resuscitation hypoxic preconditioning liver isoform of phosphofructokinase mitochondria neuroinflammation oxidative stress pyroptosis reactive oxygen species

Realgar-indigo naturalis formula for the treatment of patients with relapsed and arsenic trioxide-resistant acute promyelocytic leukemia:A case series

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Journal of Integrative Medicine 2024年第5期22卷 614-620页

作者： Yong-guang Fang Shi-lin Huang nan-nan chen Department of Hematology PLA 967th HospitalDalian 116021Liaoning ProvinceChina

Introduction There is currently no standard treatment for relapsed and arsenic trioxide(ATO)-resistant acute promyelocytic leukemia(APL).Here,we report a case series of realgar-indigo naturalis formula(RIF)for the successful treatment of patients with relapsed and ATO-resistant *** presentation Two patients in the first relapse and one in the second relapse failed to achieve hematologic complete remission(HCR)when reinduced by ATO;the other five patients progressed to relapse during ATO-based regimens for post-remission *** eight patients received RIF in three doses per day totaling 130 mg/kg(≤30 pills)as induction therapy and achieved HCR at a median time of 46.5 *** received 5 years of post-remission therapy,which consisted of combined chemotherapy followed by *** this period,the patients did not experience renal dysfunction or QT interval *** the last follow-up,three patients survived without relapse,two patients survived with a second or third relapse and third or fourth remission,and the other three patients relapsed for a third or fourth time and *** 5-year overall survival and event-free survival rates were 75.0%(95%confidence interval[CI]:31.5–93.1)and 37.5%(95%CI:5.6–71.7),*** RIF for induction therapy and RIF combined with chemotherapy for post-remission therapy may represent an effective and safe protocol for the treatment of patients with relapsed and ATO-resistant APL.

关键词： Acute promyelocytic leukemia Realgar-indigo naturalis formula Arsenic Trioxide Resistant Case report

Effect of Scale Formation on Copper Enrichment Behavior in Continuously Cast Slab

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Journal of Iron and Steel Research International 2016年第8期23卷 739-744页

作者： nan WANG Jin XU Shan YU guang-zong ZHANG guang-hao chen Min chen School of Metallurgy Northeastern University School of Computer Science and Engineering Northeastern University

Copper enrichment behavior in continuously cast slab induced by scale formation during continuous cooling was experimentally investigated,and the effects of initial slab surface temperature and oxygen potential in atmosphere were *** results showed that a loose scale adhered to the substrate was formed in H2O-N2 atmosphere at higher slab surface temperature compared to a gap formed between the scale and the steel substrate after continuous cooling in H2O-O2-N2 *** the condition of continuous cooling in H2O-N2 atmosphere,the copper enrichment occurred both within the loose scale and at the scale/steel interface with simultaneous Ni enrichment near the interface at higher slab surface *** combined effects of the loose scale and nickel enrichment were thought to promote the back-migration of Cu-rich phase from the interface and occlusion within the scale *** in H2O-O2-N2 atmosphere,the Cu enrichment was found on the steel side and the formed gap prevented the migration of Cu to the scale.

关键词： loose migration enrichment Enrichment nickel simultaneous crystalline continuously subsequent removed

Viscosity prediction on iron-bearing slags during pyrometallurgical recycling: structure-based modeling of CaO-‘FeO’-MgO-Al_(2)O_(3)-SiO_(2) system and its subsystems

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Journal of Iron and Steel Research International 2021年第6期28卷 679-692页

作者： guang-zong Zhang nan Wang Min chen Yan-qing cheng School of Metallurgy Northeastern UniversityShenyang 110819LiaoningChina Institute for Frontier Technologies of Low-Carbon Steelmaking Shenyang 110819LiaoningChina Liaoning Province Engineering Research Center for Technologies of Low-Carbon Steelmaking Shenyang 110819LiaoningChina

A structure-based modeling of the CaO-‘FeO’-MgO-Al_(2)O_(3)-SiO_(2) system and its subsystems was investigated based on iron extraction nickel slagaluminum *** optimization in the present model indicated that the coefficient of free O^(2-)in FeO,a_(O_(FeO)^(2-)),on the lengths of network linkage had the largest value and O_(FeO)^(2-)(free O^(2)-in FeO)had the largest *** coefficients of bridging oxygen(a_(Si-O-Al) and a_(Al-O-Al))were lower than those of nonbridging oxygen and free oxygen(O^(2-)).Viscosity prediction for the CaO-‘FeO’-(8 wt.%)MgO-Al_(2)O_(3)-SiO_(2) system was conducted at a fixed slag basicity,which indicated that the predicted viscosity changed monotonously with the FeO ***,the non-monotonous evolution with Al2O3 content reflected the amphoteric behavior of *** addition,the performances of the present model in predicting viscosity binary(‘FeO’-SiO_(2))to quinary(CaO-‘FeO’-MgO-Al_(2)O_(3)-SiO_(2))system were analyzed and a comparison with the established models was made.

关键词： Nickel slag Viscosity model Slag structure Iron-bearing slag CaO-FeO-MgO-Al_(2)O_(3)-SiO_(2)system

雾收集用单向导湿针织物涂层摩擦制备及性能研究

维普期刊数据库评论

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维普期刊数据库

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丝绸 2025年第1期62卷 49页

作者：张静广靖陈诚新疆大学特色纺织品与清洁染整技术重点实验室新疆智能与绿色纺织重点实验室

随着人口爆炸、工业和高新产业发展的持续，工厂和居民对清洁用水需求日益增加，水雾收集器件不断涌现，而现有水雾收集器件多采用飞秒激光刻蚀等方式达到符合要求的浸润性表面，对设备要求较高。本文基于简便的室温自发胶凝作用，温和... 详细信息

随着人口爆炸、工业和高新产业发展的持续，工厂和居民对清洁用水需求日益增加，水雾收集器件不断涌现，而现有水雾收集器件多采用飞秒激光刻蚀等方式达到符合要求的浸润性表面，对设备要求较高。本文基于简便的室温自发胶凝作用，温和构建凝胶聚合物基质，通过引入反应组分以控制胶凝成形期间的微观形貌与表面能分布，经室温修饰形成超疏水聚合物复合材料。以针织物为基底、摩擦为手段构制Janus针织物涂层，利用其润湿不对称性实现单向导湿，进而在捕雾集水的同时减缓水蒸发以提升应用效率，达到低成本且高效的雾收集。

关键词：雾收集单向导湿针织物涂层摩擦制备 Janus

Hydrate formation from liquid CO_(2) in a glass beads bed

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Chinese Journal of Chemical Engineering 2022年第3期35卷 185-191页

作者： nan Li Jing-Yu Kan Chang-Yu Sun guang-Jin chen State Key Laboratory of Heavy Oil Processing China University of Petroleum-Beijing at KaramayKaramay 834000China State Key Laboratory of Heavy Oil Processing China University of PetroleumBeijing 102249China

CO_(2)sequestration in marine sediments as solid hydrates is a potential way to capture and store anthropogenic CO_(2).In this study,hydrate formation from liquid CO_(2)in marine sediments was simulated in a glass beads bed,and the factors affecting the kinetics of hydrate formation were *** results indicated that the rapid initial hydrate formation with a high driving force always increases the mass transfer resistance,which slows down hydrate *** final ratio of water conversion is higher under conditions of low temperature and higher pressure.A smaller particle size is conductive to initial CO_(2)hydrate growth,but the water conversion ratio in a bed with larger particles is slightly *** with other factors,the change in water saturation has an obvious effect on the final water *** inhibit the initial hydrate formation during the injection process,in this paper,a kinetic inhibitor is proposed for pre-injection into marine *** work shows that at a low pressure,a lowconcentration inhibitor has an obvious inhibition effect on hydrate ***,at a high pressure,it is necessary to increase the concentration of inhibitor to produce an obvious inhibition effect.

关键词： Liquid CO_(2) Hydrate formation Sequestration Kinetic Water conversion