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基于统计波叠加法的流激平板声辐射数值算法研究

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振动与冲击 2024年第16期43卷 204-210页

作者：胡昊灏蒋哲伦王彪朱瑞祺江苏科技大学海洋学院江苏镇江212000 江苏科技大学船舶与海洋工程学院江苏镇江212000

结构流激噪声是一个多场耦合的复杂问题,以平板流激噪声为例,提出一种预报流激结构噪声的统计波叠加方法,该方法首先利用有限元耦合波叠加方法获取系统传递函数矩阵,并参考随机声振理论半经验公式构建湍流脉动压力激励谱矩阵以获得流激... 详细信息

结构流激噪声是一个多场耦合的复杂问题,以平板流激噪声为例,提出一种预报流激结构噪声的统计波叠加方法,该方法首先利用有限元耦合波叠加方法获取系统传递函数矩阵,并参考随机声振理论半经验公式构建湍流脉动压力激励谱矩阵以获得流激噪声。该研究给出了预报平板流激噪声的详细流程,通过与统计有限元法以及统计边界元法等传统理论计算结果进行比对,指出了该算法的准确性和高效性,最后给出了影响统计波叠加法计算精度的关键参数。该研究成果为结构振动噪声控制提供了预报方法和技术支撑。

关键词：流激噪声统计波叠加法高效性振动噪声控制

Broadband photochromic effect and photoluminescence modulation in rare-earth-doped(Pb,La)(Zr,Ti)O3 ceramics

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Chinese Optics Letters 2020年第9期18卷 41-45页

作者： Long Xu ruiqi zhu Caixia Xu School of Physical Science and Technology Southwest UniversityChongqing 400715China School of Primary Education Chongqing Normal UniversityChongqing 400700China

The broadband photochromic effect on undoped and rare-earth-doped lead lanthanum zirconate titanate(PLZT) ceramics was studied under the illumination of ultraviolet light at 360 nm. The photocarriers’ trapping and detrapping processes of thermal disconnected traps played the vital role in both darkening and bleaching processes. The interaction between photocarrier traps and rare-earth ion energy levels was demonstrated, which influenced the photochromatic darkening performance greatly. The transformation of photoluminescence spectra in Er3+-doped PLZT ceramics also improved the physical picture of the trap’s distribution of the *** work could be used to modulate the photoluminescence and lasing behavior.

关键词： photochromic effect darkening and bleaching process trapping and detrapping spectrum transformation

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盾构掘进过程刀盘与土层相互作用受力分析

山西建筑 2024年第20期50卷 178-181,191页

作者：朱睿琦朱利高文宪侯邦周广铁李娇蓉中铁三局集团第四工程有限公司辽宁沈阳110000

以沈阳地铁1号线东延线农业大学站—东三环站区间盾构掘进施工为研究背景,运用离散元软件EDEM及机械建模软件3Dmax建立盾构刀盘及复合地层模型,模拟盾构机在复杂土层向前掘进的运动过程,通过设置参数,改变不同的刀盘转速、盾构推进速度... 详细信息

以沈阳地铁1号线东延线农业大学站—东三环站区间盾构掘进施工为研究背景,运用离散元软件EDEM及机械建模软件3Dmax建立盾构刀盘及复合地层模型,模拟盾构机在复杂土层向前掘进的运动过程,通过设置参数,改变不同的刀盘转速、盾构推进速度,研究它们对盾构刀盘的扭矩、切向力、法向力等受力变化影响。研究结果表明:在一定范围内,随着转速的提高,盾构刀盘所受的扭矩、法向力、切向力有所增加。在一定范围内,随着推进速度的提高,盾构刀盘所受的扭矩、法向力、切向力也有所增加。通过受力分析,选择合适的刀盘转速及合适的推进速度,可以有效提高工程施工安全。

关键词：盾构掘进盾构刀盘数值模拟受力分析

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盾构滚刀切削钢筋混凝土桩基影响规律研究

江西建材 2024年第6期 243-245页

作者：周广铁朱利高文宪侯邦朱睿琦李娇蓉中铁三局集团第四工程有限公司辽宁沈阳102399

文中以沈阳地铁一号线东延线农业大学站一东三环站区间的盾构连续穿越桩基为研究案例,根据项目工程地质报告与TBM相关参数,建立滚刀-钢筋/混凝土三维模型,运用LS-DYNA对TBM单刃滚刀切削钢筋与混凝土过程进行动态掘进仿真,对滚刀刀盘不... 详细信息

文中以沈阳地铁一号线东延线农业大学站一东三环站区间的盾构连续穿越桩基为研究案例,根据项目工程地质报告与TBM相关参数,建立滚刀-钢筋/混凝土三维模型,运用LS-DYNA对TBM单刃滚刀切削钢筋与混凝土过程进行动态掘进仿真,对滚刀刀盘不同刀刃半径、刀刃宽度、刀刃角进行数值模拟,分析滚刀对钢筋与混凝土切削力情况,研究滚刀切削钢筋混凝土桩基时的影响。

关键词：地铁隧道盾构掘进切削效果切桩数值分析

FLT3 tyrosine kinase inhibitors synergize with BCL-2 inhibition to eliminate FLT3/ITD acute leukemia cells through BIM activation

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Signal Transduction and Targeted Therapy 2021年第6期6卷 1884-1894页

作者： ruiqi zhu Li Li Bao Nguyen Jaesung Seo Min Wu Tessa Seale Mark Levis Amy Duffield Yu Hu Donald Small Department of Oncology Johns Hopkins University School of MedicineBaltimoreMDUSA Department of Hematology Union HospitalTongji Medical CollegeHuazhong University of Science and TechnologyWuhanChina Department of Pathology Johns Hopkins University School of MedicineBaltimoreMDUSA Department of Pediatrics Johns Hopkins University School of MedicineBaltimoreMDUSA

Tyrosine kinase inhibitors(TKIs)targeting FLT3 have shown activity but when used alone have achieved limited success in clinical trials,suggesting the need for combination with other *** investigated the combination of FLT3 TKIs(Gilteritinib or Sorafenib),with Venetodax,a BCL-2 selective inhibitor(BCL-2i),on FLT3/ITD leukemia *** combination of a FLT3 TKI and a BCL-2i synergistically reduced cell proliferation and enhanced apoptosis/cell death in FLT3/ITD cell lines and primary AML *** also re-sensitized FLT3 TKI-resistant cells to Gilteritinib or Sorafenib treatment,mediated through MAPK pathway *** treatment alone dissociated BIM from MCL-1 but increased the binding of BIM to *** treatment enhanced the binding of BIM to MCL-1 but dissociated BIM from *** with the drugs together resulted in dissociation of BIM from both BCL-2 and MCL-1,with an increased binding of BIM to the cell death mediator BAX,leading to increased *** findings suggest that Venetoclax mitigates the unintended pro-survival effects of FLT3 TKI mainly through the dissociation of BIM and BCL-2 and also decreased BIM *** study provides evidence that the addition of BCL-2i enhances the effect of FLT3 TKI therapy in FLT3/ITD AML treatment.

关键词： FLT3 drugs alone treatment BIM

蚌埠市社区医院慢性病患者使用新媒体获取健康相关知识现状及影响因素分析

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卫生职业教育 2024年第7期42卷 114-117页

作者：陈姿伊胡佳玲朱瑞琪刘咪咪朱锦锦孙雪芹蚌埠医学院护理学院安徽蚌埠233030

目的了解蚌埠市社区医院慢性病患者使用新媒体获取健康相关知识的现状及其影响因素,为制订健康传播策略提供参考依据。方法2022年4—12月便利抽取蚌埠市两家社区医院的150例慢性病患者进行问卷调查,获得其人口学特征、慢性病情况和使用... 详细信息

目的了解蚌埠市社区医院慢性病患者使用新媒体获取健康相关知识的现状及其影响因素,为制订健康传播策略提供参考依据。方法2022年4—12月便利抽取蚌埠市两家社区医院的150例慢性病患者进行问卷调查,获得其人口学特征、慢性病情况和使用新媒体获取健康相关知识情况,采用单因素分析、多因素Logistic回归分析其影响因素。结果150例慢性病患者中,42例(28.0%)使用新媒体获取健康相关知识。Logistic回归分析结果显示,年龄、文化程度、职业是蚌埠市社区医院慢性病患者使用新媒体获取健康相关知识的影响因素。结论蚌埠市社区医院慢性病患者获取健康相关知识时新媒体使用率有待进一步提升。面向慢性病患者的健康相关知识传播应以可及性强的媒体为主,加强重点人群的新媒体普及,提高慢性病患者新媒体使用率。

关键词：社区医院慢性病新媒体患者健康相关知识

Preliminary discussion on the ignition mechanism of exploding foil initiators igniting boron potassium nitrate

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Defence Technology（防务技术） 2024年第2期32卷 222-231页

作者： Haotian Jian Guoqiang Zheng Lejian Chen Zheng Ning Guofu Yin Peng zhu ruiqi Shen School of Chemistry and Chemical Engineering Nanjing University of Science and TechnologyNanjing 210094China Micro-Nano Energetic Devices Key Laboratory of MIIT Nanjing University of Science and TechnologyNanjing 210094China Anhui Province Key Laboratory of Microsystem the 43rd Research Institute of CETCHefei 230088China Science and Technology on Applied Physical and Chemistry Laboratory Shanxi Applied Physics and Chemistry Research Institute Xi'an 710061China

Exploding foil initiator(EFI)is a kind of advanced device for initiating explosives,but its function is unstable when it comes to directly igniting *** solve the problem,this research aims to reveal the ignition mechanism of EFIs directly igniting *** oscilloscope,a photon Doppler velocimetry,and a plasma spectrum measurement system were employed to obtain information of electric characteristics,impact pressure,and plasma *** results of the electric characteristics and the impact pressure were inconsistent with ignition *** only thing that the ignition success tests had in common was that their plasma all had a relatively long period of high-temperature duration(HTD).It eventually concludes that the ignition mechanism in this research is the microconvection heat transfer rather than the shock initiation,which differs from that of exploding foil initiators detonating ***,the methods for evaluating the ignition success of semiconductor bridge initiators are not entirely applicable to the tests mentioned in this *** HTD is the critical parameter for judging the ignition success,and it is influenced by two factors:the late time discharge and the energy of the electric *** longer time of the late time discharge and the more energy of the electric explosion,the easier it is to expand the HTD,which improves the probability of the ignition success.

关键词： Exploding foil initiator PDV Plasma spectrum Ignition mechanism Boron potassium nitrate

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电源外壳注塑成型模具设计

现代制造技术与装备 2024年第9期60卷 14-17页

作者：孔凡超陈佳春林诗济韩政洋朱睿琦林权武夷学院机电工程学院武夷山354300

文章针对服务器电源外壳注塑件的模具进行设计,为了提高注塑模具设计的效率和质量,利用Moldﬂow进行模流分析,并对充填时间、冷却分析、翘曲变形等开展预测评估。经过模流分析,产品成型最大翘曲变形量为0.4406 mm,冷却水路温差小于3℃,... 详细信息

文章针对服务器电源外壳注塑件的模具进行设计,为了提高注塑模具设计的效率和质量,利用Moldﬂow进行模流分析,并对充填时间、冷却分析、翘曲变形等开展预测评估。经过模流分析,产品成型最大翘曲变形量为0.4406 mm,冷却水路温差小于3℃,符合塑件生产技术要求。依据模流分析结果进行模具结构设计,采用侧浇口进料一模两腔型腔布局,设置定模直流循环水路和动模隔板水路,设计推杆联合斜销内抽芯的脱模方式,以及弹簧先复位机构等。

关键词：模具设计注塑成型电源外壳模流分析

Ribosome-inspired electrocatalysts inducing preferential nucleation and growth of three-dimensional lithium sulfide for high-performance lithium-sulfur batteries

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Journal of Energy Chemistry 2024年第7期94卷 517-526页

作者： Zhen Wu Wenfeng He Jiahui Yang Yunuo Gu ruiqi Yang Yiran Sun Jiajia Yuan Xin Wang Junwu zhu Yongsheng Fu Key Laboratory for Soft Chemistry and Functional Materials of Ministry of Education Nanjing University of Science and TechnologyNanjing 210094JiangsuChina School of Energy and Power Engineering Jiangsu UniversityZhenjiang 212013JiangsuChina FEB Res Inst Far East BatteryWuxi 214200JiangsuChina

Nucleation of lithium sulfide(Li_(2)S)induced by electrocatalysts plays a crucial role in mitigating the shut-tle ***,short-chain polysulfides on electrocatalysts surfaces tend to re-dissolve into elec-trolytes,delaying Li_(2)S supersaturation and its *** this study,we draw inspiration from the ribosome-driven protein synthesis process in cells to prepare ultrasmall nitrogen-doped MoS_(2) nanocrys-tals anchored on porous nitrogen-doped carbon networks(N-MoS_(2)-NC)***,the ex-situ SEM demonstrates that ribosome-inspired N-MoS_(2)-NC electrocatalysts induce early nucleation and rapid growth of three-dimensional Li_(2)s during *** calculations reveal that the Li-s bond length in N-MoS_(2)-Li_(2)S(100)is shorter,and the corresponding interfacial formation energy is lower than in MoS_(2)-Li_(2)S(100).This accelerated conversion of lithium polysulfides to Li_(2)S can enhance the utilization of active substances and inhibit the shuttle *** study highlights the potential of ribosome-inspired N-MoS_(2)-NC in improving the electrochemical stability of Li-S batteries,providing valuable insights for future electrocatalyst design.

关键词： Lithium-sulfur batteries Electrocatalysts Nanocrystals Ribosome-inspired Nucleation and growth