油水两相持水率非线性模型及其数值解

在一维两相分流模型的基础上，建立了油不两相持水率非线性方程，给出了非线性方程的数值解，提出了用敏感参数速度比分析了非线性方程解空间和两相流型的可能性，并结合模拟井的实验结果，验证用速率经分析数值解的可行性，得出了不同边界条件下水率的解空间。     

Quantitative Detection of the Defects in Thin-Walled Pressure Vessels with Holography and Shearing Speckle Interferometry

Quantitative assessment of the coordinates, size, embedding depth, and type of defects of a thin-walled pressure vessel is becoming increasingly important for both economic and safety reasons. Nondestructive testing methods, holographic interferometry, shearing speckle interferometry, and simple mechanical models are combined to quantitatively estimate these defect characteristic parameters (DCPs). Experimental tests were conducted to demonstrate the efficiency and the accuracy of this combined technique for thin-walled spherical vessels that contain the cavities or cracks. Relationships between the DCPs and partial fringe patterns caused by the local defects are presented, and factors that affect the estimative accuracy of DCPs are discussed.     

SMBUS(总线)的软件应用

介绍C8051F×××系列MCU中SMBUS总线的软件应用,并给出了基于C8051F×××系列单片机C语言的源程序。对从事单片机开发的科技人员有一定的参考价值。     

基于VIPA 300V系列PLC的不锈钢连续退火机组

介绍了德国VIPA公司的PLC在冶金行业不锈钢连续退火机组上的应用。作为和西门子PLC兼容的控制系统,VIPA公司的产品具有很强的竞争力,其高性价比和使用的便利性已逐步得到用户的认可。     

C8 BTBT薄膜结晶形貌及OTFT器件性能研究

以p型共轭有机小分子2,7二辛基[1]苯并噻吩并[3,2‐b]苯并噻吩(C8‐BTBT)作为底栅顶接触有机薄膜晶体管(OTFT)的有源层,采用浸渍提拉法、喷墨打印法和真空蒸镀法三种制备工艺,探究半导体薄膜载流子迁移率与结晶形貌的关系,发现不同工艺下有机小分子呈现出不同的生长行为和结晶情况,在很大程度上决定了OTFT器件性能的优劣;此外,通过XRD分析研究了退火处理对C8‐BTBT结晶的影响。结果表明,真空蒸镀制备的薄膜具有更高的结晶度、衬底覆盖率高,并且呈现出SK(Stranski‐Krastanov)模式的结晶生长特征,相应器件中陷阱密度最低,迁移率高达5.44 cm^2·V^-1·s^-1,开关比超过106;且退火处理会严重破坏C8‐BTBT薄膜的结晶。因此,控制半导体层的生长行为,提升半导体层的覆盖率和结晶度是制备高性能共轭小分子OTFT器件的有效途径。     

钛材表面无氢式一次性形成金属碳化物新方法

发明了1种能够在钛材表面无氢式一次性形成金属碳化物的三栅极离子渗镀新方法。系统工作时所产生的等离子从空隙处直接奔向工件待处理表面，从而无氢式一次性在金属材料表面形成由镀层、或扩散层或渗镀层构成的金属碳化物表面改性合金层。利用该方法在纯钛(TA2)基材表面进行了一次性无氢式渗碳和C，Mo共渗的试验。试样的x射线衍射分析(XRD)、辉光放电分析(GDA)等测试结果表明，在钛基表面形成了具有金属碳化物及碳扩散次层的渗镀合金层，渗镀成分呈现明显的梯度分布，厚度在20μm以上，最高硬度可达13000MPa。     

Self‐Powered Si/CdS Flexible Photodetector with Broadband Response from 325 to 1550 nm Based on Pyro‐phototronic Effect: An Approach for Photosensing below Bandgap Energy

Cadmium sulfide (CdS) has received widespread attention as the building block of optoelectronic devices due to its extraordinary optoelectronic properties, low work function, and excellent thermal and chemical stability. Here, a self‐powered flexible photodetector (PD) based on p‐Si/n‐CdS nanowires heterostructure is fabricated. By introducing the pyro‐phototronic effect derived from wurtzite structured CdS, the self‐powered PD shows a broadband response range, even beyond the bandgap limitation, from UV (325 nm) to near infrared (1550 nm) under zero bias with fast response speed. The light‐induced pyroelectric potential is utilized to modulate the optoelectronic processes and thus improve the photoresponse performance. Lasers with different wavelengths have different effects on the self‐powered PDs and corresponding working mechanisms are carefully investigated. Upon 325 nm laser illumination, the rise time and fall time of the self‐powered PD are 245 and 277 µs, respectively, which are faster than those of most previously reported CdS‐based nanostructure PDs. Meanwhile, the photoresponsivity R and specific detectivity D* regarding to the relative peak‐to‐peak current are both enhanced by 67.8 times, compared with those only based on the photovoltaic effect‐induced photocurrent. The self‐powered flexible PD with fast speed, stable, and broadband response is expected to have extensive applications in various environments.     

基于再生粗骨料裹浆厚度的含砂透水混凝土配合比设计方法

研究了不同水胶比下外加剂掺量对胶凝材料净浆流动度的影响,以及净浆流动度、中砂/净浆质量比双因素耦合作用下再生粗骨料裹覆砂浆厚度的变化规律;建立了胶凝材料净浆流动度与外加剂掺量,再生粗骨料裹覆砂浆厚度与净浆流动度、中砂/净浆质量比两个数学关联模型,并将两个数学关联模型应用到透水混凝土配合比设计中.结果表明,再生粗骨料裹覆砂浆厚度随砂浆流动度减小而增大,且骨料粒径愈大,其裹覆厚度愈大.采用再生骨料RCA-9.5配制含砂透水混凝土,其砂浆浆体稳定包裹再生粗骨料,无漏浆封底、露骨散架等问题;混凝土试件28 d抗压强度为14.1～17.1 MPa,28 d抗折强度为2.0～2.7 MPa,透水系数大于6 mm·s-1,抗冻性和耐磨性良好.     

香豆胶有机硼BCL—61交联反应动力学研究

本文利用香豆胶与有机硼ＢＣＬ－６１交联反应的控制步骤－有机硼ＢＣＬ－６１水解过程建立水解动力学,进而建立起交联反应动力学,得到该交联反应为２级反应,其活化能为６５．２８ＫＪ／ｍｏｌ。     

数据中心光网络资源分配方法与优化

数据中心采用光网络传输模式有利于提高系统的灵活性和拓展性,进而降低整体的能耗水平,但在实践中发现光网络资源存在分配不合理、应用效率较低等问题,不利于数据中心应对流量增加、宽带资源紧张等挑战。通过机器学习建立流量分类算法模型,并将其设计为流量分类器,使其融入光网络的流量传输环节,实现流量自动分类。借助遗传算法模型重构光网络的拓扑结构,从而优化传输路径。通过以上两项措施改进光网络的资源分配方式,并借助软件模拟检验算法模型的性能,结果显示经过以上算法处理的光网络缩短了传输路径的长度,提高了网络资源的利用率。