盖层特性对CO_2埋存逃逸速度的影响

CO2地下埋存盖层逃逸是判定其埋存可行性的重要因素之一。通过理论分析分别建立了盖层渗透、盖层裂隙或者油井、盖层扩散三种气体逃逸与盖层特性之间的关系,并进行了盖层特性对三种逸出方式的影响分析,以及三种逃逸快慢之间的对比。结果表明:初期以渗透逃逸为主,但随着埋存年限的增加,气体盖层渗透减弱,扩散逃逸占主要地位

Design of a wide spectrum day and night fisheye CCTV lens

设计了一款宽光谱日夜两用鱼眼监控镜头,使用近红外lEd光源照明及Ir-CuT双滤光片,近红外波长为850 nM,采用zEMAX软件的多重配置结构设计,使用固定焦距,实现可见光和近红外光的共焦。对设计的光学系统结构和像差曲线进行分析,设计全视场角和相对孔径分别为175°和1/1.8,使用1/3 In CCd成像接收器件,全视场MTf值在空间频率100 lP/MM处达到0.3。A day and night fisheye CCTV lens with wide spectrum is designed.The near- infrared LED light source is used to illuminate and the IR- CUT double filter is adopted.The near infrared wavelength is 850 nm.Using multi- configuration design of Zemax software,the confocal visible light and near- infrared light can be realized with a fixed focal length.The designed optical system structure and aberration curve are analyzed.The full field of view and relative aperture are 175°and 1 /1.8 respectively,using 1 /3 in CCD as image device.Full field of MTF value reached 0.3 in the spatial frequency of 100 lp / mm.国家自然科学基金(No.11104234); 校级教改项目(No.JGZY201223)资

不同配合饲料对日本鳗鲡玻璃鳗生产性能的影响

试验以水蚯蚓为对照组饲料,探讨益多美配合饲料和国外某品牌配合饲料对日本鳗鲡玻璃鳗生产性能的影响。结果表明,益多美配合饲料组的玻璃鳗平均存活率最高,为77.34%,为水蚯蚓组的1.64倍;国外饲料组和益多美饲料组玻璃鳗的平均增重率分别是水蚯蚓组的1.83和1.70倍;配合饲料转化率优于水蚯蚓,其中益多美饲料组的平均饲料转化率(27.3%)略高于国外饲料组(26.3%)。公益性行业(农业)科研专项经费项目nyhyzx07-043-1

Storage and leakage of CO2 in deep saline

本文对CO2在盐水层的埋存问题研究进展进行了总结。对在盐水层中的埋存问题主要从CO2在盐水层中的运动及因素如盐水、井布局、地层等特性的影响、化学反应机理及其对储存库地层的影响、现场试验及监测情况、数学模型和理论分析等方面进行了总结。最后指出今后应该针对CO2在储存库中运移各因素的影响做进一步研究;针对CO2逃逸的模型建立中除要考虑地层渗流特性,还要考虑井口布置、盖层破坏等因素

Iris Acquiring Optical System Design with Wavefront Coding

设计了一款采用波前编码技术的虹膜采集光学系统,以实现大景深、自然非约束状态下的成像.以传统的光学系统评价指标斯特利尔比和能量集中度作为波前编码系统的成像特征,利用ZEMAX软件对波前编码系统进行设计,权衡了离焦不敏感性和图像可恢复性.比较了带有立方相位编码板和带有修正项的立方相位编码板的虹膜采集系统以及传统系统的焦深延拓效果.发现采用立方相位编码板的虹膜采集光学系统的焦深延拓效果最佳,其焦深是传统系统的8倍.该系统增大了虹膜采集的距离,对于自然状态虹膜成像系统设计有一定的参考价值.An iris acquiring optical system with wavefront coding technique was designed,which can increase the depth of the field and get image at natural state without restriction.By applying the conventional imaging evaluation metric,Strehl ratio and encircled energy were used as the imaging features,and the wavefront coding system was design with ZEMAX,then a better trade-off between insensibility to defocus and restorability was obtained.The depths of focus of the system with cubic phase mask and modified cubic phase mask and the conventional system were compared.The result suggests the depth of focus of the iris acquiring system with cubic phase mask is the best which can attain by a factor of 8over conventional iris acquiring system.The design increases the distance of the iris acquiring which has some reference value to the design of the iris image acquiring system at natural state.福建省自然科学基金(No.2016J01684);; 福建省教育厅A类项目(No.JA12242)资助~

Optimization for optical characteristics of WFC mask of mobile phone imaging system

设计了基于波前相位编码板的轻薄手机镜头,原始成像系统的焦深大小是0.017mm,使用立方相位编码板,采用基于斯特列尔比的相位板优化方法,保持了在不同离焦位置成像系统MTF的稳定性,最终成像系统设计焦深达到0.136mm,焦深扩展了8倍,经过Zemax软件仿真,验证了景深延拓的效果。设计结果表明,使用相位编码板即可增大定焦距手机系统的景深,使得系统结构紧凑,又克服了视场效应。A compact mobile phone lens based on the wavefront coding(WFC)was designed,the depth of field(DOF)of the original system was 0.017 mm.The cubic phase mask(CPM)was utilized and the parameters of phase mask could be optimized base on Strehl ratio(SR)to keep the stability of the modulation transfer function(MTF)at different positions.Finally the designed DOF reached 0.136 mm,which extended 8times.The effect of DOF extension was verified by simulation through Zemax software.Results indicate that it can increase the DOF of fixed mobile phone system,make the structure compact as well as overcome the field effect through using WFC.福建省教育厅A类项目(JA12242);; 厦门理工学院校级教改项目(JGZY201227

CO_2在深部盐水层埋存的研究趋势

本文对CO_2在盐水层的埋存问题研究进展进行了总结。对在盐水层中的埋存问题主要从CO_2在盐水层中的运动及因素如盐水、井布局、地层等特性的影响、化学反应机理及其对储存库地层的影响、现场试验及监测情况、数学模型和理论分析等方面进行了总结。最后指出今后应该针对CO_2在储存库中运移各因素的影响做进一步研究;针对CO_2逃逸的模型建立中除要考虑地层渗流特性,还要考虑井口布置、盖层破坏等因素

湖北梁子湖四种螺的形态与壳强度初步研究

测定了湖北梁子湖的铜锈环棱螺(Bellamya aeruginosa)、长角涵螺(Alocinma longicornis)、中华沼螺(Parafossarulus sinensis)和耳萝卜螺(Radix auricularia)的壳形态性状和壳强度。4种螺壳形态可量性状之间以及壳形态可量性状与壳强度之间均呈显著的正相关,且存在明显的种间差异。探讨了螺类形态和壳强度与反捕食功能的关系