Effect of annealing on wet etch of amorphous IGZO thin film

Amorphous InGaZnO (a-IGZO) film is deposited on the glass substrate by radio-frequency sputtering and the influence of annealing on wet etch of a-IGZO films were investigated.The results show that etch rate of IGZO films decrease with the increase of annealing temperature.Etching taper angle is less than 60 and critical dimension (CD) loss is less than 1 μm in over-etching time of 30 s.The fact implies that IGZO films etching with oxalic acid may be a good wet etching way for the thin-film transistor (TFT) ...     

利用快速热退火法制备多晶硅薄膜

为了制备多晶硅薄膜,研究了非晶硅薄膜的快速热退火（RTA）技术.先利用PECVD设备沉积非晶硅薄膜,然后把其放入快速热退火炉中进行退火.退火后的薄膜利用X射线衍射仪（XRD）和Raman测试仪分析其晶体结构,研究了退火温度、退火时间对非晶硅薄膜晶化的影响.     

Dependence of electrical and optical properties of IGZO films on oxygen flow

Amorphous InGaZnO (a-IGZO) films were deposited on the corning eagle XG (EXG) glass substrates using magnetron sputtering method. The structure, surface morphology, electrical and optical properties of these films were investigated by X-ray diffraction (XRD), scanning electron microscopy (SEM), semiconductor parameter analyzer and spectrophotometry, respectively. The influence of oxygen flow on the electrical properties of IGZO thin films was studied, showing that increasing oxygen flow changes the resistivity with six orders of magnitude. The contact resistance of ITO/IGZO is 7.35×10⁻² Ω·cm², which suggests that a good ohmic contact exists between In₂O₃: Sn (ITO) and IGZO film.     

Si/SiC纳米复合薄膜退火工艺的控制

讨论了Si／SiC半导体纳米复合发光薄膜退火工艺的控制。半导体纳米复合发光薄膜的光致发光性能，直接受到退火工艺的影响和制约，退火后薄膜的组态及其元素的变化等因素，可能使得薄膜变成并不是所期望得到的结果。该文采用了在不同气氛、不同退火介质、不同放置方法等防氧化方法下进行退火，提高了退火可信度，使纳米复合薄膜的结果更可靠。     

Effect of the geometric shapes of specimens on impact tensile tests

The geometric shapes of specimens are important in impact tensile tests because geometric shapes determine the stress states of the specimens, and precise geometric shapes can obtain proper material properties without non-material factors. The aim of this study was to investigate the 1D form of the stress by changing the length-to-diameter （L/D） ratios of specimens. The experiments were carried out on a split Hopkinson tensile bar （SHTB）-rotating disk indirect bar-bar tensile impact apparatus. The L/D ratios of the LY12CZ specimens used in the test ranged from 1 to 5. Results show that the specimens can be used to obtain exact parameters of materials under the proposed conditions when the L/D ratio is greater than 2. This is because the longer length will reduce or eliminate the effects of the interfaces.     

复方丹参片早期干预对APP/PS1转基因小鼠学习记忆的影响

目的：探讨复方丹参片早期干预对APP/PS1转基因小鼠学习记忆的影响及作用机制。方法：4月龄野生型小鼠和APP/PS1转基因小鼠分别灌胃给予溶剂或药物8周后,采用新物体识别实验和跳台实验评价复方丹参片对小鼠行为学表现的影响;应用ELISA检测小鼠海马β淀粉样蛋白（β-amyloid protein,Aβ）Aβ40、Aβ42的含量;采用Real time PCR和Western blot分别检测胰岛素分解酶（insulin degrading enzyme,IDE）/脑啡肽酶（neprilysin,NEP）m RNA和蛋白水平的变化。结果：新物体识别实验结果显示,复方丹参片720 mg·kg-1显著性增加APP/PS1转基因小鼠对新物体的识别指数。跳台实验结果显示,复方丹参片720、360 mg·kg-1显著性减少APP/PS1转基因小鼠学习次数,此外,复方丹参片720 mg·kg-1明显增加小鼠在平台的停留时间。ELISA结果显示,复方丹参片720、360 mg·kg-1显著性降低APP/PS1转基因小鼠海马Aβ40、Aβ42水平。Real-time PCR结果显示,复方丹参片720 mg·kg-1显著性上调APP/PS1转基因小鼠海马IDE和NEP m RNA的表达。Western blot结果显示,复方丹参片720 mg·kg-1显著性增加小鼠海马IDE蛋白表达。结论：复方丹参片可改善APP/PS1转基因小鼠学习记忆能力,可能与减少海马Aβ水平和增加IDE的表达有关。     

Investigation on Crystallization Kinetics of Zr-AI-Based Bulk Amorphous Alloys

Zr65Al10Ni10Cu15, Zr52.5Al10Ni10Cu15Be12.5 and Zr52.5Al10Ni14.6 Cu17.9Ti5bulk amorphous alloys were prepared by copper mould casting. The crystallization kinetics was measured by differential scanning calorimeter(DSC) with different heating rates, and the activation energy was calculated using Kissinger equation. The relationship between thermal stability and rate constant of crystallization reaction is discussed on the view of crystallization kinetics, and the effect of small atom Beryllium on thermal stability of bulk amorphous alloys is also studied.     

三晋文化对山西发展的意义

文化力对社会发展的推动作用越来越凸显出来。三晋文化既是山西经济社会发展可依托的比较优势,也是山西实现文化强省的新型竞争力,其产业化还是缩小与东部地区发展差距的必然选择。     

Effect of direct quenching on microstructure and mechanical properties of medium-carbon Nb-bearing steel

The influence of direct quenching （DQ） on microstructure and mechanical properties of 0.19C-1.7Si-1.0 Mn-0.05Nb steel was studied. The microstructure and mechanical properties of reheat quenched and tempered （RQ＆T） steel plate were compared with those of direct quenched and tempered （DQ＆T） steel plates which were hot rolled at different finish rolling tem-peratures （1173 K and 1123 K）, i.e., recrystallization-controlled-rolled direct-quenched （RCR＆DQ） and controlled-rolled direct-quenched （CR＆DQ）, respectively. The strengths generally increased in the following order： RQ＆T〈RCR＆DQ＆T〈 CR＆DQ＆T. Strength differences between the CR＆DQ＆T and RQ＆T conditions as high as 14% were observed at the tempered temperature of 573 K. The optical microscopy of the CR＆DQ＆T steel showed deformed grains elongated along the rolling direction, while complete equiaxed grains were visible in RQ＆T and RCR＆DQ＆T steels. Transmission electron microscopy （TEM） and electron backscattering diffraction （EBSD） of the DQ steels showed smaller block width and higher density of dislocations. Inheritance of austenite deformation substructure by the martensite and differences in martensite block width were ruled out as major causes for the strength differences between DQ and RQ steels.     

工作不安全感对组织公民行为的影响效应研究——以组织支持感为调节变量

已有理论与实证研究结果未能明确工作不安全感与组织公民行为间的关系。以组织支持感作为调节变量,并基于多维度的工作不安全感视角来对工作不安全感与组织公民行为间的关系进行权变性考察。运用调节层级回归分析方法对所收集到的787份有效问卷进行统计分析。结果显示:工作丧失不安全感、过度竞争不安全感对组织公民行为具有负向预测作用,薪酬晋升不安全感、人际关系不安全感则对组织公民行为具有正向预测作用。此外,在过度竞争不安全感与组织公民行为的消极联系间,组织支持感起到了正向调节的作用,但在薪酬晋升不安全感、人际关系不安全感与组织公民行为的积极联系间,组织支持感均起到负向的调节作用。研究综合社会交换理论、理性选择理论以及组织公民行为的动机理论对以上结果进行全面分析。     

Effect of substrates and underlayer on CNT synthesis by plasma enhanced CVD

Due to their unique thermal, electronic and mechanical properties, carbon nanotubes （CNTs） have aroused various attentions of many researchers. Among all the techniques to fabricate CNTs, plasma enhanced chemical vapor deposition （PECVD） has been extensively developed as one growth technique to produce verticallyaligned car bon nanotubes （VACNTs）. Though CNTs show a trend to be integrated into nanoelectromechanical system （NEMS）, CNT growth still remains a mysterious technology. This paper attempts to reveal the effects of substrates and un derlayers to CNT synthesis. We tried five different substrates by substituting intrinsic Si with high resistivity ones and byincreasing the thickness of SiO2 insulativity layer. And also, we demonstrated an innovative way of adjusting CNT den sity by changing the thickness of Cu underlayer.     

瓜子金皂苷己对鱼藤酮损伤PC-12细胞的保护作用及其对CREB的影响

目的：观察瓜子金皂苷己（polygalasaponin F,PS-F）对鱼藤酮损伤的PC-12细胞的保护作用及其对cAMP反应元件结合蛋白（cAMP response element binding protein,CREB）表达的影响。方法：以鱼藤酮损伤的PC-12细胞为模型,通过倒置显微镜观察细胞形态,caspase 3活性检测试剂盒测定caspase 3活性,荧光素酶报告基因技术检测CREB表达的变化。结果：PC-12细胞在4μmol·L-1鱼藤酮损伤后,细胞出现萎缩变圆,折光率降低,caspase 3活性显著升高,呈现凋亡的现象。不同浓度（0.1,1.0,10.0μmol·L-1）瓜子金皂苷己能够剂量依赖性的减轻对细胞形态的影响,降低caspase 3活性。荧光素酶报告基因标记显示,瓜子金皂苷己能够增加报告基因CREB的表达。结论：瓜子金皂苷己能够抑制鱼藤酮诱导的PC-12细胞凋亡,其机制可能与增加CREB的表达有关。     

高原训练对促红细胞生成素（EPO）的影响

高原训练作为一种能提高运动员运动成绩的有效手段,广泛被教练员们所采用,其主要的作用机制是通过提高血中促红细胞生成素（erythropoietin,EPO）的含量,使红细胞的生成增加,从而增强机体携带氧的能力,使运动能力得到提高。为此,该文将高原训练对促红细胞生成素的影响加以综述,以便更好的指导运动训练。     

中学聋生自我效能感对主观幸福感的影响

目的：探讨中学聋生的主观幸福感与自我效能感状况及两者的关系。方法：采用主观幸福感量表和一般自我效能感量表对180名中学聋生进行调查。结果：初三聋生的生活满意度和自我效能感最低;父母受教育程度高、与母亲共同生活的以及家庭经济条件好的聋生的生活满意度、正性情感和自我效能感显著高于其他聋生;高自我效能感组聋生的正性情感及生活满意度极显著高于低自我效能感组的;被试的自我效能感对其主观幸福感的影响达到显著水平。结论：自我效能感对被试主观幸福感的影响作用不容忽视,特教工作者要特别关注初三阶段、与母亲分开居住、经济条件较困难的聋生,提高他们的自我效能感,从而提升其主观幸福感水平。     

运动疗法对腰椎间盘突出症的临床康复效果观察

为了探索更为有效的治疗方法,采用随机分组对照实验研究方法,观察运动疗法对腰椎间盘突出症患者的临床康复效果。结果显示运动疗法取得更为显著的康复效果,与对照组比较有统计学意义（P〈0．01）,且远期疗效优于对照组（P〈0．05）。可见运动疗法能改善脊柱的生物力学功能,通过对神经根压迫不同程度的减轻以及增强脊柱的稳定性,取得更为持久的康复效果,是一种很好的腰椎间盘突出症康复方法。     

基于XML的DMB EPG数据转换技术探究

该文在分析研究DMBEPG一系列相关协议、技术背景、工作原理的基础上,就DMB EPG前端系统的数据转换技术展开探讨,并设计和实现了基于XML的EPG数据转换技术,即提出一种基于Schema模式的数据转换方法．     

Effect of rich air/fuel ratio and temperature on NO x desorption of lean NO x trap

An experimental and model-based study of the effect of rich air/fuel ratios （AFRs） and temperature on the NOx slip of a lean NOx trap （LNT） was conducted in a lean-burn gasoline engine with an LNT after-treatment system. The emissions of the engine test bench and the inlet temperature of the LNT were used as the major inlet boundary conditions of the LNT. The engine periodically operated between a constant lean AFR of 23 with alterable rich AFRs of 10, 11, 12, 13, and 14. A decrease in the rich AFR of the engine strengthened the desorption atmosphere in the LNT, an effect closely related to the number of reductants, and further heightened the NOx desorption of the LNT, but with a penalty in fuel consumption. To eliminate that penalty, the inlet boundary conditions of the LNT were varied by adjusting the inlet temperature within a range between 200 ℃ and 400℃. An increase in inlet temperature heightened the NOx desorption of the LNT, and a NOx breakthrough occurred after the inlet tem- perature exceeded 390 ℃. To control NOx breakthrough, the inlet temperature can be adjusted to offset the strong desorption atmosphere in the LNT commonly created by a rich AFR.     

星形胶质细胞生物学功能研究进展

星形胶质细胞广泛分布于中枢神经的灰质与白质中,并作为在中枢神经系统中数目占绝对优势的一类大胶质细胞,近二十年来,学者们对星形胶质细胞的研究可谓突飞猛进;星形胶质细胞新的功能和作用逐渐被发现并证实;回顾了星形胶质细胞的一般生物学功能及其生物学功能研究的近期进展,论述了其与几种神经系统疾病的关系及其在中枢神经系统损伤与衰老时形态功能的变化。     

广告效果评价的实证研究

以层次分析法（即AHP法）为工具,对影响广告效果的三个核心因素：传播效果、心理效果和行为效果进行了综合研究,以企业广告投入、广告效果组合最优化为目标建立分析模型,最后进行了实证分析。     

金属表面自组装成膜的机理研究——苯硫醇在Au（100）表面的吸附

通过分子力学和分子动力学模拟,对我们已发表的苯硫醇在Au（100）上吸附的扫描隧道显微镜结果进行了模拟.根据STM结果,苯硫醇在Au（100）表面形成（√2×√5）的结构,最小重复单元为Au（100）-（√2×√5）的-1BT.分子模拟结果表明,BT分子之间存在相互作用,导致邻近的BT分子方向发生变化.如果考虑分子方向的变化,得到的最小重复单元应该是Au（100）-（√2×3√2）-2BT.（√2×√5）的结构是一个平行四边形,相邻两边的夹角为75°或105°;（√2×3√2）结构是一个矩形,相邻两边的夹角为90°.在重复单元Au（100）-（√2×√5）的-1BT和Au（100）-（√2×3√2）-2BT中,苯硫醇的覆盖度都是0.33.通过分子模拟结果与STM实验结果的比较,证明分子模拟结果可以作为实验的一种重要补充,有助于进一步揭示金属表面缓蚀功能膜自组装的机理.