深背景高陡度荧光滤光片

荧光滤光片是应用于生物医学和生命科学仪器的关键元件。介绍了深背景、高截止陡度荧光滤光片的设计和镀制工艺。采用优化设计HB-βBPF膜系,提高荧光滤光片的隔离度。分析了散射对背景深度的影响,通过优化工艺参数,降低散射。研制的荧光滤光片截止陡度小于10nm(OD0.3~OD5的波长间隔),邻域背景达到OD7~OD8。     

激光荧光肺癌定位系统滤光片的研制

论述用于激光荧光肺癌定位系统滤光片的膜系设计,制备这套滤光片所采取的工艺措施,最后给出研制的结果。     

激光荧光肺癌定位系统滤光片的研制

论述用于激光荧光肺癌定位系统滤光片的膜系设计,制备这套滤光片所采取的工艺措施,最后给出研制的结果     

荧光分光光度计的功能扩展

在不改变荧光分光光度计的结构和影响仪器原有功能的条件下,对荧光仪的光路进行简单的设置,利用白纸导光,即可使原有的荧光分光光度计同时具有与紫外-可见分光光度计相同的功能.利用该简便方法,在荧光分光光度计上分别对滤光片和叶片进行透射光谱和反射光谱的测绘,并与紫外-可见分光光度计上的测绘结果进行比较,两者基本一致,证明该法是可行的.     

超宽超窄矩形带通滤光片的设计

回顾了带通滤光片的研究应用现状 ,得出要设计超宽超窄的带通滤光片必须采用多腔串置的结构。引入了影响带通滤光片性能的参数 ,并对这些参数进行了分析。设计出了两类性能完全不同的带通滤光片 ,并对它们的特性做了一定的分析。     

超宽超窄矩形带通滤光片的设计

回顾了带通滤光片的研究应用现状,得出要设计超宽超窄的带通滤光片必须采用多腔串置的结构.引入了影响带通滤光片性能的参数,并对这些参数进行了分析.设计出了两类性能完全不同的带通滤光片,并对它们的特性做了一定的分析.     

超宽超窄矩形带通滤光片的设计

回顾了带通滤光片的研究应用现状,得出要设计超宽超窄的带通滤光片必须采用多腔串置的结构.引入了影响带通滤光片性能的参数,并对这些参数进行了分析.设计出了两类性能完全不同的带通滤光片,并对它们的特性做了一定的分析.     

CCD摄像机滤光片自动切换器机构优化设计

为适应摄像机白天和黑夜摄影需求,需要设计专门自动切换器来切滤光片,白天使用白天专用滤光片,晚上使用夜晚专用滤光片.使用Pro/E软件对微型CCD摄像机自动切换器进行零件建模装配和尺寸分析,提出微型电磁推杆在自动切换器中能实现微小位移移动功能又具有良好自锁性能,并对微型电磁推杆进行大胆结构创新,使其具有断电后仍然具有自锁功能.     

荧光滤光片

主要叙述了目前在国内外汽车修理行业正广泛使用的汽车油箱捡漏装置中的重要光学元件——荧光滤光片的设计与制造,并对此光学元件使用原理和捡漏装置的应用进行了基本的介绍。     

X射线荧光仪真空和进样机械手结构与维修

日本岛津公司与理学公司生产的两类X射线荧光光谱仪的真空和进样机械手系统。根据它们结构的不同，探讨一些与之对应的故障分析与维护对策。     

Minimal Realization of Linear Graph Models for Multi-physics Systems

An engineering system may consist of several different types of components,belonging to such physical"domains"as mechanical,electrical,fluid,and thermal.It is t...     

On the Relation of Load to Average Gap in the Contact Between Surfaces with Longitudinal Roughness

A computer simulation model for the contact between longitudinally-oriented rough surfaces has been formulated. This model closely duplicates the actual surf ace contact deformation behavior by taking into account the elastic interactions between the asperities. There were no assumptions made about the shapes, or any deformation behavior of the asperities, except for their obeying the laws of elasticity. The plastic deformations on the high asperity peaks were taken into account by setting a ceiling on their contact pressures at the material hardness value. The simulations used real surface profiles which were digitized from unworn circumferentially ground steel surfaces. Each pair of these profiles was mathematically combined to form an equivalent rough profile pressing against an infinitely rigid flat and having the appropriately adjusted elastic modulus. A total of 28 different pairs of profiles were used in the simulations. Each contacting pair was subjected to 30 different load levels and the local contact pressures and deformations were calculated. The contact simulations yielded some important mathematical relationships between parameters, such as the real area of contact, average gap, and average asperity load through statistical curve fitting. Two analytical functions were generated to relate the average load to average gap and the real area of contact to load.     

三绕组变压器的双绕组等效建模及在Matpower中的应用

针对实际电网存在着大量的三绕组变压器,但国际上一些著名商业软件,如BPA仿真软件、Matpower这一权威潮流计算开源软件,均只提供双绕组变压器模型,限制了其在具有三绕组变压器的电力系统中的应用的问题,潮流计算是自主开发的电力系统各种应用软件的核心模块,因此依托国际权威开源程序进行二次开发,是一种较好的选择。对Matpower要求的数据格式进行了归纳,对变压器的一般的等值电路及带理想变压器的等值电路和带标幺值的等值电路进行了分析研究,提出了三绕组变压器转换为双绕组等效模型的建模方法,使得原先只适应双绕组变压器的潮流计算软件可以适用于三绕组变压器电网的潮流计算;最后以Matpower软件为例进行了案例计算,并用PSASP仿真软件进行对比验证。研究结果证明,所提出的建模方法是有效的。     

Quantum Cooperative Robotics and Autonomy

The intersection of Quantum Technologies and Robotics Autonomy is explored in the present paper.The two areas are brought together in establishing an interdisci...     

电站锅炉模糊风险评价方法研究与应用

针对电站锅炉风险等级评价问题,将模糊综合评价技术应用到电站锅炉风险等级评价中。开展了电站锅炉失效影响因素及模糊评价因素的重要程度分析,建立了一套科学合理适于在线评价的电站锅炉风险评价体系,提出了模糊综合评价技术与改进的模糊层次分析法相结合的模糊风险评价方法,利用改进的模糊层次分析法计算了指标体系中各层指标权重。对某一台电站锅炉的实际运行工况影响子因素进行了模糊风险评价,采用模糊合成算子进行模糊综合运算得到电了站锅炉运行工况影响子因素的评价向量。研究结果表明:电站锅炉的运行工况影响子因素的风险评价等级为第6级,失效可能性等级为小,该电站锅炉运行工况良好。     

考虑进油孔有限长滑动轴承油膜力的近似解析解

针对具有进油孔的有限长滑动轴承油膜力求解问题,采用变分原理和分离变量法,求得了有限长滑动轴承油膜压力分布的近似解析表达式。将油膜压力分布的近似解析表达式在油膜存在区域上进行积分,即得到了油膜力。将提出的计算有限长滑动轴承油膜力方法与无限长轴承模型、有限元方法的计算结果进行了比较,发现了提出的方法与有限元方法的计算结果很接近。最后,研究了进油孔位置和进油压力对油膜存在区域、油膜力等的影响,研究结果表明进油孔位置和进油压力对油膜存在区域和油膜力有较大的影响。     

Fifth International Summer School on Screw-Theory Based Methods in Robotics

正3-11 September,2014University of Bologna,Bologna,Italy www.summerscrews.org summerscrews2014.ing.unibo.it SUMMER 20SCREWS 14In 2014,our screw-theory school comes to the world's oldest university.In early September,Summer Screws'14 will gather six experts in the application of screw theory in robotics and up to 40 participants at the University of Bologna,Bologna,Italy.The school will teach attendees how to apply existing methods and empower them to develop new ones in their own research.The basic theoretical notions will be introduced in a rigorous manner,emphasizing examples,applications,and exercises.Scholarships are available.     

交通荷载作用下桥梁结构参数识别方法

应用动力节点加载法,将作用在桥梁上的交通荷载转化为等效节点荷载,再用两步构造法识别结构物理参数.第1步,用Newmark-β方法变换结构运动方程,并用结构的加速度响应求得变换空间内的位移、速度和加速度响应;第2步,基于最小二乘原理,构造出变换空间内求解结构参数的递推式,进行结构物理参数识别.数值模拟结果表明,在交通荷载作用下,该方法能够快速、准确地进行桥梁结构参数识别.     

INDUSTRIAL ENGINEERING AND VISUALISATION-A PRODUCT DEVELOPMENT PERSPECTIVE

Taking the actual project of teaching and researching process for example, the relationship between the industrial engineering and product development is discussed. And use the novel visualization technology to support the industrial engineering and product development. How to use the new computer modeling and simulating technologies to support the product development and industrial engineering, is introduced especially. The support includes both domestic products and industrial systems. The visualization and computer technologies take a very important role in some system or multi-direction modeling, those technologies mentioned above can help the industrial engineers study the effect of design on the whole life circle, including the producing steps. So the engineers can avoid making the wrong decision which may cause bad effects on the whole industrial engineering.     

Non-monotonic material contrast in scanning ion and scanning electron images

30 keV Ga⁺ focused ion beam induced secondary electron (iSE) imaging was used to determine the relative contrast between several materials. The iSE signal compared from C, Si, Al, Ti, Cr, Ni, Cu, Mo, Ag, and W metal layers does not decrease with an increase in target atomic number Z₂, and shows a non-monotonic relationship between contrast and Z₂. The non-monotonic relationship is attributed to periodic fluctuations of the stopping power and sputter yield inherent to the ion–solid interactions. In addition, material contrast from electron-induced secondary electron (eSE) and backscattered electron (BSE) images using scanning electron microscopy (SEM) also shows non-monotonic contrast as a function of Z₂, following the periodic behavior of the stopping power for electron–solid interactions. A comparison of the iSE and eSE results shows similar relative contrast between the metal layers, and not complementary contrast as conventionally understood. These similarities in the contrast behavior can be attributed to similarities in the periodic and non-monotonic function defined by incident particle–solid interaction theory.