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Journal of Pharmaceutical Analysis 2024年第4期14卷 615-618页

作者： Yue liu mengjia li Xing Fu Yi Zhang Ce Tang State Key Laboratory of Southwestern Chinese Medicine Resources School of Ethnic MedicineChengdu University of Traditional Chinese MedicineChengdu611137China Meishan Hospital of Chengdu University of Traditional Chinese Medicine MeishanSichuan620010China Innovative Institute of Chinese Medicine and Pharmacy Chengdu University of Traditional Chinese MedicineChengdu611137China

The dried roots of Aconitum pendulum Busch are the major source of a commonly used Tibetan medicine,namely Tiebangchui(TBC)(Fig.S1).However,raw TBC contains a large amount of high toxic diester-diterpenoid alkaloids(DDAs),and the improper use would cause arrhythmia,irreversible cardiovascular damages,and even death.“Paozhi”,an appropriate processing method,is the essential prerequisite for the safe clinical application of ***-decocting and sand-frying are commonly used processing methods for toxicity attenuation and efficacy preservation for TBC.

关键词： dried irreversible roots

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水分对废纸张微波加热特性影响模拟研究

广州化工 2024年第19期52卷 109-114页

作者：林雪彬李梦佳集美大学海洋装备与机械工程学院福建厦门361021

水分对微波加热过程有重要影响,采用COMSOL Multiphysics软件对不同水分下纸张的升温、温度分布、能耗等微波加热特性进行模拟研究。研究结果表明:纸张含水率5%时,其加热效果最佳,高含水率下纸张温度分布更加均匀。较高的微波功率可以... 详细信息

水分对微波加热过程有重要影响,采用COMSOL Multiphysics软件对不同水分下纸张的升温、温度分布、能耗等微波加热特性进行模拟研究。研究结果表明:纸张含水率5%时,其加热效果最佳,高含水率下纸张温度分布更加均匀。较高的微波功率可以减少能耗,微波功率从0.5 kW增加到2 kW,不同含水率纸张温升提高30%~32%。此外,纸张厚度和含水率对纸张的微波加热具有耦合作用:10%含水率时,纸张吸收热量随厚度增加。40%含水率时,厚度3 mm时吸热量最佳。纸张厚度越大温度分布越均匀。

关键词：微波加热 COMSOL Multiphysics 水分纸张

关于司机室手动塞拉门系统门锁故障分析与解决

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机车车辆工艺 2024年第4期60卷 52-55页

作者：李梦佳赵坤 IFE-威奥轨道车辆门系统(青岛)有限公司山东青岛266109 青岛依诺信工业自动化技术有限公司山东青岛266200

某地铁线路司机室侧门采用的是手动塞拉门系统,整个司机室侧门结构简单、可靠性高、耐磨性好且易于操作。在车辆进入大修的前期,车辆在运营过程中出现了司机室侧门门锁故障,司机室侧门门锁自动打开的情况。针对该故障,文章进行了原因分... 详细信息

某地铁线路司机室侧门采用的是手动塞拉门系统,整个司机室侧门结构简单、可靠性高、耐磨性好且易于操作。在车辆进入大修的前期,车辆在运营过程中出现了司机室侧门门锁故障,司机室侧门门锁自动打开的情况。针对该故障,文章进行了原因分析,提出了切实有效的解决方案并完成了现车验证。

关键词：轨道车辆司机室侧门门锁故障分析地铁

R290、R454C替代R404A在商用冰箱中的应用性能对比研究

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制冷学报 2024年第4期45卷 36-42页

作者：王泽斌薛雯李梦佳田雅芬张华苏明宏上海理工大学能源与动力工程学院上海200093 上海金城制冷设备有限公司上海201805

R404A在轻商设备中应用广泛,目前《基加利修正案》中明确规定了制冷剂替代进程,R454C和R290由于GWP更低,成为商用冰箱中替代前景较好的制冷剂。为了对比这3种不同工质在商用冰箱中的应用性能,在焓差实验室中测试了4款不同规格的小型商... 详细信息

R404A在轻商设备中应用广泛,目前《基加利修正案》中明确规定了制冷剂替代进程,R454C和R290由于GWP更低,成为商用冰箱中替代前景较好的制冷剂。为了对比这3种不同工质在商用冰箱中的应用性能,在焓差实验室中测试了4款不同规格的小型商用冰箱,并对比了R404A、R454C和R290系统的充注量、耗电量、材料成本与碳排放量等参数。研究结果表明:相比R404A系统,R454C系统24 h耗电量可降低约5%,总碳排放量减少约15%;替换为R290后,系统充注量大幅降低,仅为R404A的20.6%~34.3%,大幅降低了制冷剂充注成本,且24 h耗电量可降低约15%~30%,碳排放量降低25.3%~43.7%。

关键词： R290 商用冰箱制冷性能实验碳排放量

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水稻蒸煮品质相关QTL定位及候选基因分析

生物工程学报 2024年第1期40卷 122-136页

作者：乐巧娜黄梓雯戴若惠李三峰李梦佳方媛王跃星饶玉春浙江师范大学生命科学学院浙江金华321004 中国水稻研究所水稻生物学国家重点实验室浙江杭州310006

挖掘与稻米蒸煮品质相关的数量性状基因座(quantitative trait locus,QTL),分析候选基因,并通过遗传育种手段改良稻米蒸煮品质相关性状,可有效提升稻米的口感。以籼稻华占(Huazhan,HZ)、粳稻热研2号(Nekken2)及由其构建的120个重组自交... 详细信息

挖掘与稻米蒸煮品质相关的数量性状基因座(quantitative trait locus,QTL),分析候选基因,并通过遗传育种手段改良稻米蒸煮品质相关性状,可有效提升稻米的口感。以籼稻华占(Huazhan,HZ)、粳稻热研2号(Nekken2)及由其构建的120个重组自交系(recombinant inbred lines,RILs)群体为实验材料,测定成熟期稻米的糊化温度(gelatinization temperature,GT)、胶稠度(gel consistency,GC)和直链淀粉含量(amylose content,AC)。结合高密度分子遗传图谱进行QTL定位,共检测到26个与稻米蒸煮品质相关的QTLs(糊化温度相关位点1个、胶稠度相关位点13个、直链淀粉含量相关位点12个),其中最高奇数的可能性(likelihood of odd,LOD)值达30.24。通过实时荧光定量PCR(quantitative real-time polymerase chain reaction,qRT-PCR)分析定位区间内候选基因的表达量,发现6个基因在双亲间的表达量差异显著,推测LOC_Os04g20270和LOC_Os11g40100的高表达可能会极大地提高稻米的胶稠度,而LOC_Os01g04920和LOC_Os02g17500的高表达以及LOC_Os03g02650和LOC_Os05g25840的低表达有助于降低直链淀粉含量。这些结果为培育优质水稻新品种奠定了分子基础,并为揭示稻米蒸煮品质的分子调控机制提供了重要的遗传资源。

关键词：水稻蒸煮品质数量性状基因座(QTL)分析候选基因

Graphitic Carbon Nitride Microspheres Supportedα-FeO(OH)Hybrids for Visible light Photodegradation of MO

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Chemical Research in Chinese Universities 2019年第2期35卷 319-324页

作者： WANG Junlin YI Yongjie li mengjia CHANG Yue ZHA Fei College of Chemistry & Chemical Engineering Northwest Normal UniversityLanzhou 730070P.R.China Key Laboratory of Eco-environment-related Polymer Materials Ministry of EducationNorthwest Normal UniversityLanzhou 730070P.R.China Key Laboratory of Polymer Material of Gansu Province Northwest Normal UniversityLanzhou 730070P.R.China

Graphitic carbon nitride(g-C3N4)microspheres supported a-FeO(OH)hybrids[α-FeO(OH)/g-C3N4]were prepared by means of a self-assembly method in deionized *** UV-visible diffiise reflectance spectroscopy,it has been confirmed thatα-FeO(OH)/g-C3N4 has a wider absorption range thanThe feature ofα-FeO(OH)/g-C3N4 can be attributed to the efficient separation of the electron-hole pairs with photoluminescence *** degradation rate of methyl orange(MO)is up to 99%under the optimal conditions of 110 min,initial concentration of 30 mg/L,anα-FeO(OH)/g-C3N4 dosage of 15 mg as well as visible *** mechanism for this photocatalytic reaction was proposed,with hydroxyl radicals being a major active catalytic species.

关键词： α-FeO(OH)/g-C3N4 Self-assembly method Photocatalyst Methyl orange(MO) Visible light

Humic acid-mediated transport of a typical soil passivation remediation product(chloropyromorphite)in saturated porous media

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Journal of Environmental Sciences 2024年第7期141卷 51-62页

作者： Xinying li mengjia Zhang Siyuan li Wei Wei School of Environment Jiangsu Engineering Lab of Water and Soil Eco-remediationJiangsu Province Engineering Research Center of Environmental Risk Prevention and Emergency Response TechnologyNanjing Normal UniversityNanjing 210023China Jiangsu Center for Collaborative Innovation in Geographical Information Resource Development and Application Nanjing 210023China

Conversion of labile Pb species into chloropyromorphite(CPY)using phosphorus-bearing amendments was considered to be an ideal strategy in soil passivation ***,the fate and transport of CPY in the soil are poorly *** study aims to fill the knowledge gap by evaluating the fate and transport of CPY under environmentally relevant conditions of humic acid(HA),pH,electrolyte concentration,and species through the saturated sandy *** showed that bare CPY colloids are basically immobile in sandy porous media while the co-existence of HA made the transport of CPY improved by30%-93.5%.Facilitated transport of CPY was attributed to the increased stability of CPY and the repulsive interaction between CPY particles and sands due to HA *** mobility of CPY was also increased with increasing pH from 5.0 to *** the pH was 9 with a10 mmol/L NaCl background solution,the stronger energy barrier between CPY and sand led to enhanced transport *** divalent Ca^(2+)had a more dramatic effect than monovalent Na^(+)on the aggregation and sedimentation of CPY colloids due to its effectivescreening of the surface charge of CPY and bridging interaction with CPY ***-LandauVerwey-Overbeek theory and attachment efficiency calculation indicated that high energy barriers were responsible for the high mobility of CPY colloids,while the retention of CPY in sands was mainly caused by secondary energy minimum and physically *** findings of this work can help to evaluate the fate of soil passivation remediation products in natural water and soil.

关键词： Chloropyromorphite DLVO theory Stability Saturated porous medium Transport

Achieving high-strain-rate and low-temperature superplasticity in an ECAP-processed Mg-Y-Er-Zn alloy via Ag addition

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Journal of Magnesium and Alloys 2023年第10期11卷 3765-3778页

作者： Haoran Wu Jinghua Jiang Zhenquan Yang mengjia li He Huang Ningfei Ge Aibin Ma Huan liu College of Mechanicals and Materials Hohai UniversityNanjing 210000China Suqian Institute Hohai UniversitySuqian 223800China Center of Advanced Analysis and Gene Sequencing Zhengzhou UniversityZhengzhou 450003China School of Materials Science and Engineering Zhengzhou UniversityZhengzhou 450003China Faculty of Georesources and Materials Engineering RWTH Aachen University52062Germany

The effect of adding a small amount of Ag on the microstructure evolution and superplastic properties of Mg-Y-Er-Zn(WEZ612) alloys was systematically *** basal texture of the refined WEZ612 alloy produced by equal channel angular pressing was altered to a non-basal structure upon the addition of *** addition also refined the grain size and promoted the formation of a large number of nano-14H-long period stacking ordered *** high-resolution transmission electron microscopy,many nano-precipitated phases were detected on the basal plane of the Mg-Y-Er-Zn-1Ag(WEZ612-1Ag) alloy,The nano-precipitated phases on the basal plane improved the thermal stability of the alloy,lowered the deformation activation energy(Q),and improved the stress sensitivity index(m).At 523 K with a strain rate of 10^(-2) s^(-1),the Q value of WEZ612 was higher than that of WEZ612-1Ag(299.14 and 128.5 kJ mol^(-1),respectively).In contrast,the m value of the WEZ612 alloy(0.16) was lower than that of the WEZ612-1Ag alloy(0.46).At 623 K with a tensile rate of 10^(-2) s^(-1),the WEZ612 and WEZ612-1Ag alloys were elongated by 182% and 495%,respectively,with the latter exhibiting high-strain-rate and low-temperature *** improved superplasticity of the WEZ612-1Ag alloy is attributed to the nano-precipitated phases,which effectively limit the cavity extension during superplastic deformation.

关键词： Magnesium alloys Long period stacking ordered(LPSO) Ag addition Nano-precipitates Superplastic behavior

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民航院校提升主题教育实效探究

中国民航飞行学院学报 2024年第1期35卷 64-67页

作者：段益李蒙珈段玉婷张子迁中国民用航空飞行学院四川广汉618307

在全党深入开展主题教育是新阶段深入推进党的建设新的伟大工程的重大部署。民航院校要充分认识提升主题教育实效的重要意义,全面分析提升主题教育实效的现实问题,巩固深化主题教育成果,持续探索提升主题教育实效的路径,紧紧围绕、贯彻... 详细信息

在全党深入开展主题教育是新阶段深入推进党的建设新的伟大工程的重大部署。民航院校要充分认识提升主题教育实效的重要意义,全面分析提升主题教育实效的现实问题,巩固深化主题教育成果,持续探索提升主题教育实效的路径,紧紧围绕、贯彻、服从党中央主题教育总要求,持续推进、科学评估,力促主题教育高质量开展,以行业力量奋力谱写交通强国民航新篇章的绚丽华章。

关键词：党的二十大民航院校主题教育实效

Achieving high strength and ductility in Fe_(50)Mn_(25)Ni_(10)Cr_(15) medium entropy alloy via Al alloying

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Journal of Materials Science & Technology 2022年第5期100卷 20-26页

作者： Zhen Jiang Ran Wei Wenzhou Wang mengjia li Zhenhua Han Shuhan Yuan Kaisheng Zhang ChenChen Tan Wang Fushan li School of Materials Science and Engineering Zhengzhou UniversityZhengzhou 450001China Henan Shenhuo Coal&Power Co.Ltd Yongcheng 476600China School of Materials Science and Engineering Xi’an University of TechnologyXi’an 710048China

The microstructure and tensile properties of(Fe_(50)Mn_(25)Ni_(10)Cr_(15))_(100-x)Al_(x)(x=0-8 at.%)medium-entropy alloys(MEAs)were *** was found that the crystalline structure changes from face-centered cubic(FCC)single phase to FCC+body-centered cubic(BCC)dual-phase with the increase of Al ***,the addition of Al elements with large atomic size could induce solid solution strengthening and dual-phase heterogeneous structure ***,the present MEAs exhibit excellent combinations of yield strength,ultimate tensile strength(UTS)and ductility both at 298 and 77 *** the MEAs,the(Fe_(50)Mn_(25)Ni_(10)Cr_(15))_(95)Al_(5) alloy has a remarkable combination of cryogenic UTS(1077 MPa)and ductility(~85%),and has lower raw material costs than the reported high-entropy alloys(HEAs)and *** correlation among microstructure and mechanical properties and the corresponding strengthening mechanism were clarified.

关键词： Medium entropy alloys Microstructure Mechanical properties Cryogenic temperature