基于COM的Delphi和Matlab接口编程研究

简要介绍了Delphi与Matlab各自的优缺点,较为全面地列举和分析了二者接口编程的几种方式,重点讨论了Delphi调用Matlab编译生成的COM组件的方法和原理,实现二者的无缝集成.提供的实现过程和应用实例均说明了该方法简便、可操作性强.通过Delphi和Matlab的整合,可以根据实际需要,开发功能强大而且界面友好的软件.     

粘结相相变机制的研究

为了进一步了解粘结相在硬质合金中松弛应力、协调两相应变状态的作用,本文用透射电镜对Co基合金在不同状态下的微观结构进行了观察研究。结果表明:⒈Co相中常见的结构缺陷主要是层错和孪晶。烧结态下以层错为主,淬火态及回火态则两者并存,且孪晶数量大大增加。⒉冷却时粘结相中发生的马氏体型相变是通过层错形核机制由面心立方α-Co逐渐转变成密排六方ε-Co的,两者的取向关系是:(111)α-Co//(0001)ε-Co,[110]α-Co//[2110]ε-Co。⒊孪晶界阻碍了层错的扩展,不利于马氏体相变的进行,增加了α-Co的稳定性。⒋粗略推断,导致ε-Co开始生成的临界层错密度约为每隔75层原子面插入一层层错面,临界层错间距约为15纳米。     

触点基材中石墨团聚尺寸的大小对覆银层界面粘合强度的影响研究

为了分析石墨团聚的尺寸对焊接面粘合强度的影响,本文准备两种石墨团聚尺寸不同的AgWC(12)C(3)静银点,其中1号触点基材中石墨团聚尺寸约30-100μm,2号触点基材中石墨团聚约尺寸10-30μm,通过理化试验、钎焊高温验证以及界面微观扫描电镜等相关手段分析触点基材中石墨团聚的尺寸对基材与覆银层粘合强度的影响。最后得出结论,触点材料基材中的石墨分散度越低越不利于基材与覆银层有效的结合,从而使触点材料在焊接过程中由于界面结合力较弱导致覆银出现起泡现象,经过产品的电寿命和温升试验可以得出,在触点材料的基材中,分散度较好的石墨有利于焊接的钎着率,提高产品的电寿命。     

SRM融雪径流模型在疏勒河流域上游的应用

疏勒河是西北典型的干旱区内陆河流域,其冰雪融水是春季径流补给的重要来源之一。本文结合MODIS积雪产品MOD10A2、DEM数据和气象台站数据,构建了疏勒河流域上游SRM融雪径流模型,模拟结果的拟合优度确定系数Nash-Sutcliffe系数R2=0.834和体积差DV=1.63%。结果表明:该模型能基本上把握疏勒河流域融雪径流的趋势,达到了较好的模拟效果,可用于该流域春季径流的预测,为预防春季融雪型洪水灾害和减轻春季旱情提供了基础。     

精巧别致 深入浅出——漫谈紫砂陶的艺术美

生活在文明社会中的人们无时无刻不受到文化艺术的熏陶。以各种方式来表达自己对文化艺术的理解。反映时代的精神风貌。宜兴紫砂集欣赏性、艺术性和实用性于一体而深受人们喜爱。它以艺术和赏析之美为人们带来一股浓浓的文化气息,丰富了人们的精神生活,又以实用性将艺术带进人们的日常生活中。给人们以美的享受。     

一种利用耦合阻抗改善天线阵列匹配的方法

提出一种利用无源辐射贴片寄生阵与阵列单元之间互耦效应Smnqp(第mn个天线单元与第qp个无源贴片之间的耦合系数),改善天线阵驻波特性的方法.分析Smnqp与天线阵单元之间耦合系数Smn(m≠n),增益,回波损耗Smn(m=n)的关系,可以得出适当的Smnqp可以降低天线驻波,而根据文献(10)的描述,在天线增益不变的情况下,Smn(m≠n)应该增大.实际应用中,可以通过修改贴片尺寸改变Smnqp.如果合理应用,可以优化天线性能.基于上述理论,设计3×3矩阵并对HFSS仿真结果进行分析,得出Smnqp对天线回波损耗,增益,等各种性能的影响.     

Visible Light Photocatalytic Properties and Thermochromic Phenomena of Nanostructured BiOCl Microspheres

Black nanostructured Bi OCl microspheres were directly synthesized by a hydrothermal method. The black balllike Bi OCl microspheres and black flower-like Bi OCl microspheres were obtained using different surfactant.The color of the Bi OCl microspheres turned from black to white when being annealed at 400℃ in air for 3 h and could be recovered to black by exposure to ultraviolet light for a few hours. The photocatalytic activity of both the black and the white Bi OCl microspheres was characterized by the photo-degradation of methyl orange dye under visible light irradiation. The black ball-like nanostructure Bi OCl displayed the best photocatalytic activity, compared with the white Bi OCl and the black flower-like Bi OCl. It can degrade the methyl orange dye to 20% within 70 min under visible light irradiation. The high activity of the Bi OCl ball-like sphere may own to its special morphology, strong absorption in visible light range and the existence of oxygen vacancies.     

Fabrication and photocatalytic property of ZnO nanorod arrays on Cu2O thin film

ZnO nanorod arrays were fabricated on Cu₂O thin film by a simple low-temperature liquid-phase-deposition method. The samples were characterized by X-ray powder diffraction (XRD) and field emission scanning electron microscopy (FESEM). The UV-Vis spectroscopy showed that the obtained sample was able to absorb a large part of visible light (up to 650 nm). Their photocatalytic activities were investigated by degradation of dye methylene blue (MB) under UV-Vis and visible light irradiation. It was found that the photocatalytic activity of the ZnO/Cu₂O NRs was higher than the ZnO/ZnO NRs under UV-Vis light. In a word, Cu₂O played an important role in enhancing the photocatalytic activity of the ZnO/Cu₂O NRs.     

管状聚苯胺的制备及表征

以小分子2-蒽-9-基亚甲基-丙二腈(AYM)自组装成的微米线为模板,盐酸为掺杂剂,制备了聚苯胺(PAni)与AYM复合材料(PAni/AYM),经有机溶剂CH2_Cl_2脱除AYM可得具有管状结构的PAni。通过扫描电镜(SEM)、红外分析(FTIR)、X射线衍射(XRD)、热失重(TGA)等研究了反应时间、盐酸掺杂度对聚苯胺形貌和性质的影响。结果表明,当反应体系HCl浓度为0.1rnol/L、反应时间为12h时可获得长度几十微米、直径1～2μm的管状聚苯胺,管状PAni的热稳定性能稍优于颗粒状PAni,而且管状PAni的电导率随着盐酸浓度的增加而增大,0.1mol/LHCl浓度下,电导率达1.19×10~(-2)S/cm。     

Sensitive detection of infrared photons using a high-Q microcantilever

A new approach based on microcantilevers is presented to detect infrared photons with high sensitivity. Infrared photons are measured by monitoring the amplitude change of a vibrating microcantilever under light pressure force.The irradiating light is modulated into sinusoidal and pulsed waves,and to be in-phase and anti-phase with the cantilever driving signal.A linear relationship between the amplitude change of the cantilever and the light power distributing on the cantilever was observed.Under a vacuum of 10^-4 Pa,an infrared light power of 7.4 nW was detected with the cantilever.The in-phase and anti-phase modulation to the cantilever vibration using a pulsed light results in an enhanced response of the cantilever.