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金属熔融涂覆成形薄壁件表面形貌与工艺

浙江大学学报（工学版） 2018年第1期52卷 24-28页

作者：杜军王鑫任传奇白浩西安交通大学机械制造系统工程国家重点实验室陕西西安710049

针对现有金属增材制造设备昂贵、成形效率低等问题,提出金属熔融涂覆增材制造(MFCAM).以锡铅合金为原料,开展基础工艺实验,研究流量、成形速度和层厚对多层单道成形件表面形貌特征的影响规律.通过统计分析影响因素,提高成形件表面质量,... 详细信息

针对现有金属增材制造设备昂贵、成形效率低等问题,提出金属熔融涂覆增材制造(MFCAM).以锡铅合金为原料,开展基础工艺实验,研究流量、成形速度和层厚对多层单道成形件表面形貌特征的影响规律.通过统计分析影响因素,提高成形件表面质量,采用显微图像观察,结合波纹度对多层单道试件层间结合状态进行评估.研究结果表明,金属熔融涂覆增材制造成形效率为50mm^3/s,成形件表面波纹度的轮廓算术平均偏差为0.944 8,证明了MFCAM新工艺的可行性及高效性.

关键词：增材制造金属熔融涂覆多层单道表面形貌锡63铅37 层厚

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用于应力测量的可调谐光栅

光学精密工程 2018年第7期26卷 1596-1603页

作者：杨江涛唐军王玉波郭浩刘俊中北大学电子测试技术国家重点实验室仪器科学与动态测试教育部重点实验室山西太原030051

为了更简单地制备出可用于应力测量的光栅褶皱结构,采用基于刚性薄膜/柔性衬底的自组装工艺制备了可调谐光栅。首先在聚乙烯对苯二酸脂(PET)薄膜上旋涂一层聚二甲基硅氧烷(PDMS)薄膜,将双层薄膜弯曲并用氧气等离子体处理,在其表面生成... 详细信息

为了更简单地制备出可用于应力测量的光栅褶皱结构,采用基于刚性薄膜/柔性衬底的自组装工艺制备了可调谐光栅。首先在聚乙烯对苯二酸脂(PET)薄膜上旋涂一层聚二甲基硅氧烷(PDMS)薄膜,将双层薄膜弯曲并用氧气等离子体处理,在其表面生成一层刚性氧化层,借助柔性PET对刚性层施加均匀应力,当应力超过临界值时,在PDMS基底上自组装形成光栅褶皱结构。然后根据光栅分光原理,将这种可调谐的光栅结构应用于应力测试。实验结果表明:当光栅的曲率半径为1.4mm时,制备的可调谐光栅褶皱在0%~10%的应变范围得到的波长变化为452~507nm;当光栅的曲率半径为5.6mm时,制备的可调谐光栅褶皱在0%~15%的应变范围得到的波长变化为498~572nm。本文提出的可调谐光栅制备方法是一种成本低、工艺简单、可批量化生产的工艺方法,也是一种制备变间距光栅的潜在方法,未来有望应用于光谱仪、光通讯等领域。

关键词：光栅制作聚二甲基硅氧烷氧气等离子体衍射光谱学

Brain-derived neurotrophic factor down-regulates divalent metal transporter 1 with iron responsive element via the ERK /Akt pathway

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Brain-derived neurotrophic factor down-regulates divalent me...

中国神经科学学会第十届全国学术会议

作者： hao-Yun ZHANG Ning SONG Hong JIANG jun-Xia XIE Department of Physiology Shandong Provincial Key Laboratory of Pathogenesis and Prevention of Neurological Disorders and State Key Disciplines:PhysiologyMedical College of Qingdao University Department of Histology and Embryology Shandong Provincial Key Laboratory of Human Anatomy and EmbryologyWeifang Medical University

Objective Parkinson’s disease is a neurodegenerative disorder characterized by a preferential loss of dopaminergic neurons of the substantia nigra pars *** accumulation of iron in this area was ***-derived neurotrophic factor（BDNF） is thought to be important to exert a cytoprotective effect on these neurons both in vivo and in *** whether BDNF could participate in the modulation of neuronal iron metabolism is *** the present study,we designed to investigate the effect of BDNF on the expression of divalent metal transporter 1 with iron responsive element（DMT1+IRE） in primary cultured ventral mesencephalic neurons,as well as the underlying *** Calcein loading was used to monitor ferrous iron influx in primary cultured ventral mesencephalic（VM） *** of DMT1+IRE and iron-responsive protein 1（IRP1） were measured by western blot and real-time *** phosphorylations of extracellular-regulated kinasel/2（ERKl/2）,Akt were identified by western blot and double immunofluorescence ***（1） Ferrous iron influx was enhanced and iron was accumulated in primary cultured VM neurons with 10 μM 6-hydroxydopamine（6-OHDA） treatment for 24 ***-incubation of BDNF（10 ng/ml） for 4 h prior to 6-OHDA treatment could block this process.（2） Both the mRNA and protein levels of DMTl+IRE were down-regulated with BDNF incubation for 24 *** with BDNF could also attenuate 6-OFfDA-induced improper up-regulation of DMTl+IRE.（3） BDNF quickly induced ERKl/2 and Akt phosphorylation within 30 min,and the phospho-ERK and phospho-Akt levels were gradually returned but still above the basal level ***-activated protein kinase kinase（MEK） inhibitor PD98059,phosphatidylinositol3-kinase（PI-3K） inhibitor LY294002 could fully abolish BDNF induced ERK and Akt phosphorylation,respectively.（4） Pharmacological inhibitors of MEK,PI-3K could abolish down-regulation of DMTl+IRE induced by BDNF on protein and mRNA levels.

关键词： Brain-derived neurotrophic factor divalent metal transporter 1 with iron responsive element extracellular-regulated kinase Akt iron regulatory protein 1

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铅炭电池正极失效行为研究

高电压技术 2018年第7期44卷 2247-2253页

作者：杨俊刘皓陈凯伦汪浩刘晶冰杨凯北京工业大学材料学院北京100124 中国电力科学研究院有限公司北京100192

为研究铅炭电池（LCB）正极失效行为及高温环境的影响,对成品铅炭电池进行不同温度下的电化学循环测试以研究温度对其性能的影响。而后解剖失效前后的铅炭电池,并对其正极板进行X射线衍射、扫描电镜、电子能谱等表征分析来研究正极失效... 详细信息

为研究铅炭电池（LCB）正极失效行为及高温环境的影响,对成品铅炭电池进行不同温度下的电化学循环测试以研究温度对其性能的影响。而后解剖失效前后的铅炭电池,并对其正极板进行X射线衍射、扫描电镜、电子能谱等表征分析来研究正极失效行为模式。实验结果显示：50、60℃下500次循环过后铅炭电池容量保持率〈60%,而40℃下容量保持率仍保持在90%;解剖分析结果表明未循环正极板中α-PbO2质量分数为14.55%,失效正极板中α-PbO2质量分数〈1%,失效前后正极板栅中氧重量百分比增加了10%。因此,α-PbO2向β-PbO2的转化及板栅腐蚀是正极失效的主要原因;且〈40℃的工作温度对正极失效无明显影响,〉50℃的高温环境会加速板栅的氧化腐蚀进而加剧正极失效。实际应用中加强对电池工作温度的监测、控制及对正极活性物质、板栅的改性,才能有效抑制正极失效行为的发生。

关键词：铅炭电池高温循环正极失效使用寿命电网储能电化学测试

溶胶-凝胶法制备的Ba_(0.8)Sr_(0.2)TiO_3薄膜的结构及铁电性质研究

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物理学报 2000年第5期49卷 1006-1009页

作者：程建功孟祥建唐军郭少令褚君浩中国科学院上海技术物理研究所红外物理国家实验室上海200083

采用 0 0 5mol/L的前驱体溶液 ,利用溶胶凝胶法成功制备了室温下具有优良铁电性质的Ba0 .8Sr0 .2 TiO3(BST)薄膜 .X射线衍射分析表明 ,制得的BST薄膜室温下呈四方相 ,场发射扫描电子显微观测显示BST薄膜表面平整、致密、无裂纹出现 ... 详细信息

采用 0 0 5mol/L的前驱体溶液 ,利用溶胶凝胶法成功制备了室温下具有优良铁电性质的Ba0 .8Sr0 .2 TiO3(BST)薄膜 .X射线衍射分析表明 ,制得的BST薄膜室温下呈四方相 ,场发射扫描电子显微观测显示BST薄膜表面平整、致密、无裂纹出现 ,薄膜晶粒呈柱状结构、尺寸在 15 0nm左右 .电学测量表明制备的BST薄膜室温下具有优良的铁电性能 .薄膜的剩余极化Pr 约为 3 5 μC/cm2 ,矫顽电场Ec 约为 5 3kV/cm .薄膜的绝缘性能也较好 .这为利用溶胶

关键词：溶胶-凝胶法 BST薄膜结构铁电性质

Size Model of Critical Temperature for Grain Growth in Nano V and Au

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Chinese Physics Letters 2011年第8期28卷 24-27页

作者：吕云宾廖树帜彭好军张淳周慧英谢浩文欧阳义芳张邦维 Key Laboratory of Low Dimensional Quantum Structures and Quantum Control of Ministry of Education Department of PhysicsHunan Normal UniversityChangsha 410081 College of Mathematics and Physics University of South ChinaHengyang 421001 College of Mathematics and Computer Science Hunan Normal UniversityChangsha 410081 Computer and Information Engineering School Central South University of Forestry and TechnologyChangsha 410004 Department of Physics Guangxi UniversityNanning 530004 Department of Applied Physics Hunan UniversityChangsha 410082 International Centre for Materials Physics Chinese Academy of SciencesShenyang 110015

The intrinsic thermodynamical factors that dominate the stability of nanocrystallines are investigated through the microcosmic process of grain *** results suggest that nanocrystallines grows at a certain temperature and the critical temperature is determined by the vacancy formation energy and diffusion activation energy of the *** on the hypothesis,a simple model is proposed to predict the size-dependent critical temperature of grain *** this model,we investigate the thermal stability of nanocrystallines V and Au,compared with the results *** is shown that the critical temperature decreases with decreasing size,showing an evident size *** research reveals that the thermal stability is dependent on the energetic state of the nanocrystallines and the mobility of the inner atoms.

关键词： grain stability size

The Comparison of Sugar Components in the Developing Grains of Sweet Corn and Normal Corn

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Agricultural Sciences in China 2003年第3期2卷 258-264页

作者： LIU Peng, HU Chang-hao, DONG Shu-ting, WANG Kong-jun and ZHANG Ji-wangCollege of Agronomy , Shandong Agricultural University, Taian 271018, P.R.China College of Agronomy Shandong Agricultural University Taian 271018 P. R. China

The sugar components and their dynamic variation in the developing grains of sweet corn(Zea mays L. seccharata Sturt)and normal corn (Zea mays L. indentata Sturt) were compared. There are WSP (water-soluble polysaccharides), sucrose, fructose, glucose, mannitol and sorbitol in both sweet corn and normal corn, but no maltose. Two components with different degrees of polymerization (D. P. N) were detected in the sweet corn; only one of them was detected in the normal corn 20 days after pollination. With the development of grains, the total soluble sugar content(TSS)in sweet corn increased, but in normal corn it decreased. The dynamic variation of WSP, sucrose, glucose, fructose, mannitol and sorbitol in sweet and normal corn grains are different. The contents of sugar components in the sweet corn grains are higher than that in the normal corn. Sweet corn accumulates less starch than normal corn.

关键词： Sweet corn(Zeo mays L. seccharata Sturt) Normal corn(Zea mays L. indentata Sturt),Grain Sugar component HPLC

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除臭纸对气体吸附的检测方法研究

中国造纸 2008年第9期27卷 20-22页

作者：张浩淼郝军刘秉钺马春大连工业大学辽宁大连116034

研究了除臭纸对气体吸附的检测方法。设计了一种简单的密封装置,将除臭纸折叠成V型放置其中,并注入一定体积的臭气,通过测试装置中不同时间间隔残余臭气的浓度对除臭纸的除臭性能进行评价。整个测试过程测定值稳定,实验的重复性好。

关键词：除臭纸臭气吸附检测方法

Synthetic Investigation toward Antitumoral Lignan Glycosides

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Synthetic Investigation toward Antitumoral Lignan Glycosides