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温变形变结构时域有限积分建模方法研究

空军工程大学学报 2024年第4期25卷 66-71页

作者：俞文明李逸之李伟梁加南禄晓飞崔铁军东南大学信息科学与工程学院南京210096 江苏赛博空间科学技术有限公司南京211111 沈阳飞机设计研究所沈阳110087 中国酒泉卫星发射中心甘肃酒泉735099

提出并实现了一种温变形变结构的时域有限积分(TDFIT)建模方法,通过快速三维插值技术同时解决了非同类热力电网格和参数曲面的形变映射问题,在确保仿真精度的前提下,实现了任意热分布和较小形变量的热力电联合仿真,适用电大、任意非均... 详细信息

提出并实现了一种温变形变结构的时域有限积分(TDFIT)建模方法,通过快速三维插值技术同时解决了非同类热力电网格和参数曲面的形变映射问题,在确保仿真精度的前提下,实现了任意热分布和较小形变量的热力电联合仿真,适用电大、任意非均匀温变和形变材料的仿真建模。设计了蜕化模型、分层收敛等案例验证了方法的必要性、有效性和正确性。为高温高压下天线罩、飞行器的电磁散射和辐射特性建模提供了热力电一体化建模方法和实用仿真工具。

关键词：瞬态仿真时域有限积分技术温度形变结构热力电一体化

Traditional Chinese Medicine:Leveraging Unique Strengths and Applications to Benefit People’s Health in New Ways

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Qiu Shi 2020年第5期12卷 40-48页

作者： yu Yanhong yu wenming National Health Commission CPC Leadership Group of the National Administration of Traditional Chinese Medicine National Administration of Traditional Chinese Medicine

On June 6,2020,President Xi Jinping delivered a keynote address at a symposium of experts and scholars in which he emphasized that the simultaneous and integrated use of Chinese and Western medicine has been a major highlight of the fight against the Covid-19 epidemic,as well as a vivid representation of how traditional Chinese medicine(TCM)has been carried forward through the preservation of effective practices and the development of new *** gave full affirmation to the contributions that TCM has made in epidemic prevention and control from an overall strategic perspective on the health and safety of the people,and put forward important plans for taking full advantage of the discipline’s unique strengths and applications.

关键词： prevention fir strategic

Microstructure evolution,mechanical properties and fracture behavior of Al-xSi/AZ91D bimetallic composites prepared by a compound casting

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Journal of Magnesium and Alloys 2024年第5期12卷 1944-1964页

作者： Guangyu Li wenming Jiang Feng Guan Junwen Zhu Yang yu Zitian Fan State Key Laboratory of Materials Processing and Die&Mould Technology School of Materials Science and EngineeringHuazhong University of Science and TechnologyWuhan 430074China

In this paper,the effect of the Si content on microstructure evolution,mechanical properties,and fracture behavior of the Al-xSi/AZ91D bimetallic composites prepared by compound casting was investigated *** obtained results showed that all the Al-xSi/AZ91D bimetallic composites had a metallurgical reaction layer(MRL),whose thickness increased with increasing Si content for the hypoeutectic Al-Si/AZ91D composites,while the hypereutectic Al-Si/AZ91D composites were *** MRL included eutectic layer(E layer),intermetallic compound layer(IMC layer)and transition region layer(T layer).In the IMC layer,the hypereutectic Al-Si/AZ91D composites contained some Si solid solution and flocculent Mg_(2)Si+Al-Mg IMCs phases not presented in the hypoeutectic Al-Si/AZ91D ***,increasing Si content,the thickness proportion of the T layer increased,forming an inconsistent preferred orientation of the *** shear strengths of the Al-xSi/AZ91D bimetallic composites enhanced with increasing Si content,and the Al-15Si/AZ91D composite obtained a maximum shear strength of 58.6 MPa,which was 73.4% higher than the Al-6Si/AZ91D *** fractures of the Al-xSi/AZ91D bimetallic composites transformed from the T layer into the E layer with the increase of the Si *** improvement of the shear strength of the Al-xSi/AZ91D bimetallic composites was attributed to the synergistic action of the Mg_(2)Si particle reinforcement,the reduction of oxidizing inclusions and the ratio of Al-Mg IMCs as well as the orientation change of the MRL.

关键词： Al/Mg bimetallic composites Si content Mg_(2)Si reinforcement Microstructure Mechanical properties Fracture behavior

Enhancing I0/I-Conversion Efficiency by Starch Confinement in Zinc-Iodine Battery

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Energy & Environmental Materials 2024年第1期7卷 118-124页

作者： Danyang Zhao Qiancheng Zhu Qiancheng Zhou wenming Zhang Ying yu Shuo Chen Zhifeng Ren Institute of Nanoscience and Nanotechnology College of Physical Science and Technology Central China Normal University National & Local Joint Engineering Laboratory of New Energy Photoelectric Devices College of Physics Science and Technology Hebei University Department of Physics and Tc SUH University of Houston

The redox couple of I0/I-in aqueous rechargeable iodine-zinc（I2-Zn）batteries is a promising energy storage resource since it is safe and costeffective,and provides steady output ***,the cycle life and efficiency of these batteries remain unsatisfactory due to the uncontrolled shuttling of polyiodide（I3-and I5-） and side reactions on the Zn anode.

关键词： aqueous battery conversion efficiency iodine–zinc battery starch confinement

WANG JUNYAO Struggling For Winning

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大视野 2003年第8期 26-27页

作者： Correspondent\yu wenming

July 28th is a special day to Wang *** that day of 1991, an"An 24"civil plane flew from Changsha to Wenzhou,and Wang Junyao opened a brand new page in the history of Chinese CivilAviation for being the first individual to charter a flight. This was viewed"It is agreat step forward of the further opening up of the Chinese civil aviation, and

关键词： WANG JUNYAO Struggling For Winning

Efficient removal of tetracycline hydrochloride through novel Fe/BiOBr/Bi_(2)WO_(6) photocatalyst prepared by dual-strategy under visible-light irradiation

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Journal of Environmental Sciences 2024年第4期138卷 46-61页

作者： Guanlong yu Kai Yang Yi Yang Yifu Li Qifang Sun Peiyuan Li wenming Wang Fengming Song Tao Ling Xuejun Peng Zhi yu Shiquan Sun School of Hydraulic and Environmental Engineering Changsha University of Science&TechnologyChangsha 410114China Key Laboratory of Dongting Lake Aquatic Eco-Environmental Control and Restoration of Hunan Province Changsha 410114China Hunan Pilot Yanghu Reclaimed Water Co. Ltd.Changsha 410208China China Railway Wuju Group the First Engineering Co. Ltd.Changsha 410117China

It is important to investigate whether combining two modification strategies has a synergistic effect on the activity of *** this manuscript,Fe-doped BiOBr/Bi_(2)WO_(6) heterojunctions were synthesized by a one-pot solvothermal method,and excellent photocatalytic performance was obtained for the degradation of tetracycline hydrochloride(TCH)in water without the addition of *** experiments and characterization,the synergistic effect between Fe ion doping and the BiOBr/Bi_(2)WO_(6) heterojunction was *** Fe/BiOBr/Bi_(2)WO_(6) composite photocatalyst had a beneficial void structure,enhanced visible light response,and could inhibit the recombination of photogenerated support well,which improved the photocatalytic *** presented experiments demonstrate that Fe/BiOBr/Bi_(2)WO_(6) removes 97% of TCH from aqueous solution,while pure BiOBr and Bi_(2)WO_(6) only remove 56% and 65% of TCH,***,the separation and transfer mechanisms of photoexcited carriers were determined in conjunction with the experimental *** study provides a new direction for the design of efficient photocatalysts through the use of a dual co-modification strategy.

关键词： BiOBr/Bi_(2)WO_(6) Fe-doping Dual strategy Tetracycline hydrochloride Photodegradation

Stability analysis of longwall top-coal caving face in extra-thick coal seams based on an innovative numerical hydraulic support model

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International Journal of Mining Science and Technology 2024年第4期34卷 491-505页

作者： Jun Guo Wenbo Huang Guorui Feng Jinwen Bai Lirong Li Zi Wang Luyang yu Xiaoze Wen Jie Zhang wenming Feng College of Mining Engineering Taiyuan University of TechnologyTaiyuan 030024China Key Laboratory of Shanxi Province for Mine Rock Strata Control and Disaster Prevention Taiyuan University of TechnologyTaiyuan 030024China Shanxi Coking Coal Group Co. Ltd.Taiyuan 030024China Shanxi-Zheda Institute of Advanced Materials and Chemical Engineering Taiyuan 030024China

The relationship between support and surrounding rock is of great significance to the control of surrounding rock in mining *** view of the fact that most of the existing numerical simulation methods construct virtual elements and stress servo control to approximately replace the hydraulic support problem,this paper establishes a new numerical model of hydraulic support with the same working characteristics as the actual hydraulic support by integrating numerical simulation software Rhino,Griddle and FLAC3D,which can realize the simulation of different working *** on this model,the influence mechanism of the supporting strength of hydraulic support on surrounding rock stress regulation and coal stability in front of the top coal caving face in extra thick coal seam were ***,under different support intensity,the abutment pressure of the bearing coal and the coal in front of it presents the “three-stage”evolution *** influence range of support intensity is 15%–30%.Secondly,1.5 MPa is the upper limit of impact that the support strength can have on the front coal failure ***,within a displacement range of 2.76 m from the coal wall,a support strength of1.5 MPa provides optimal control of the horizontal displacement of the coal.

关键词： Extremely thick coal seam Fully mechanized top coal caving Support strength Support-surrounding rock interaction

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有线电视网络改造方案构想

广播与电视技术 2000年第9期27卷 137-143页

作者：于文明江苏省宿迁市宿迁电视台

有线电视网络改造是电视行业都关心的一件大事,究竟改造方案应该怎么做,本文通过对相关知识、技术、结构进行汇总、比较,提出本人的粗浅看法.

关键词：有线电视网网络改造网络资源

Enhancing I^(0)/I^(-)Conversion Efficiency by Starch Confinement in Zinc-lodine Battery

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Energy & Environmental Materials 2024年第1期7卷 114-120页

作者： Danyang Zhao Qiancheng Zhu Qiancheng Zhou wenming Zhang Ying yu Shuo Chen Zhifeng Ren Institute of Nanoscience and Nanotechnology College of Physical Science and TechnologyCentral China Normal UniversityWuhan 430079China National&Local Joint Engineering Laboratory of New Energy Photoelectric Devices College of Physics Science and TechnologyHebei UniversityBaoding 071002China Department of Physics and TcSUH University of HoustonHouston Texas 77204USA

The redox couple of I^(0)/I^(-)in aqueous rechargeable iodine–zinc(I^(2)-Zn)batteries is a promising energy storage resource since it is safe and cost-effective,and provides steady output ***,the cycle life and efficiency of these batteries remain unsatisfactory due to the uncontrolled shuttling of polyiodide(I_(3)^(-)and I_(5)^(-))and side reactions on the Zn *** is a very low-cost and widely sourced food used daily around the world.“Starch turns blue when it encounters iodine”is a classic chemical reaction,which results from the unique structure of the helix starch molecule–iodine *** by this,we employ starch to confine the shuttling of polyiodide,and thus,the I^(0)/I^(-)conversion efficiency of an I^(2)-Zn battery is clearly *** to the detailed characterizations and theoretical DFT calculation results,the enhancement of I^(0)/I^(-)conversion efficiency is mainly originated from the strong bonding between the charged products of I_(3)^(-)and I_(5)^(-)and the rich hydroxyl groups in *** work provides inspiration for the rational design of high-performance and low-cost I^(2)-Zn in AZIBs.

关键词： aqueous battery conversion efficiency iodine-zinc battery starch confinement