我国现代高科技军事营区规划探索--东风航天城10号区规划设计

从分析我国军事高科技发展现状入手,以东风航天城规划为例,阐述建设高科技军事营区的必要性和方法。     

尿素装置闪蒸汽冷凝器腐蚀分析及对策

介绍闪蒸汽冷凝器的性能结构及在工艺系统中的作用,根据闪蒸汽冷凝器使用过程中发生的问题,分析腐蚀产生的原因,并提出采取的对策及建议。     

A new model of shear creep and its experimental verification

Mechanics of Time-Dependent Materials - Creep exerts a significant role in rock engineering safety. In engineering practice, it is helpful to develop a mathematical model representing rock creep...     

Investigation on the full Mullins effect using time-dependent hyperelastic model with energy dissipation for rubber antivibration applications

Mechanics of Time-Dependent Materials - Despite being investigated for many years, the Mullins effect is considered a major obstacle in understanding the behavior of rubber, especially in...     

一种结合时空上下文的在线卷积网络跟踪算法

基于卷积神经网络提取抽象特征缺乏时空信息的问题,结合时空上下文模型作为卷积神经网络的各阶滤波器,提出一种在线卷积神经网络的视觉跟踪算法.首先对初始目标进行归一化处理并提取目标置信图,跟踪过程中结合时空信息更新得到时空上下文模型,第1层使用更新后的模型对输入进行卷积,并对卷积结果进行滑动窗口取片,第2层再使用时空模型分别对取片结果进行卷积,提取目标简单抽象特征,然后叠加简单层的卷积结果得到目标的深层次表达,最后结合粒子滤波跟踪框架实现目标跟踪.实验表明:结合时空上下文模型的在线卷积网络结构提取的深度抽象特征,保留相关时空信息,提高复杂背景下的跟踪效率.     

碱处理对聚偏二氟乙烯结构与介电性能的影响

研究了碱液浸泡处理对聚偏二氟乙烯(PVDF)结构和介电性能的影响。随着浸泡时间的延长,PVDF膜逐渐出现发黄发黑现象。根据傅里叶变换红外光谱、拉曼光谱、X射线光电子能谱等测试表明,PVDF分子链在高温碱液中发生了脱除氟化氢反应,生成碳碳双键,其中部分被继续氧化成含氧基团。接触角测试和宽频介电谱测试结果显示,PVDF膜在强碱中浸泡22 h后,表面水接触角降至31°,亲水性增加;而随着分子链上共轭双键的增加,界面极化程度增大,低频处的介电常数和介电损耗均显著提高。     

自动站气压记录异常原因的诊断分析

通过实例对莒县自动站气压记录异常的原因进行了分析.试验表明:采集器更换后对气压记录有0.5 hPa的影响;气压传感器在高温高湿环境下工作也会引起气压记录的异常.     

Fabrication of 1.55μm Si-Based Resonant Cavity Enhanced Photodetectors

A novel bonding method using silicate gel as bonding medium is developed.High reflective SiO2/Si mirrors deposited on silicon substrates by e-beam deposition are bonded to the active layers at a low temperature of 350℃ without any special treatment on bonding surfaces.The reflectivities of the mirrors can be as high as 99.9%.A Si.based narrow band response InGaAs photodetector is successfully fabricated,with a quantum efficiency of 22.6% at the peak wavelength of 1.54μm,and a full width at half maximum of about 27nm.This method has a great potential for industry processes.     

Event vertex and time reconstruction in large-volume liquid scintillator detectors

Large-volume liquid scintillator detectors with ultra-low background levels have been widely used to study neutrino physics and search for dark matter. Event ve...     

Critical Roles of Circular RNA in Tumor Metastasis via Acting as a Sponge of miRNA/isomiR

Circular RNAs (circRNAs), a class of new endogenous non-coding RNAs (ncRNAs), are closely related to the carcinogenic process and play a critical role in tumor metastasis. CircRNAs can lay the foundation for tumor metastasis via promoting tumor angiogenesis, make tumor cells gain the ability of migration and invasion by regulating epithelial-mesenchymal transition (EMT), interact with immune cells, cytokines, chemokines, and other non-cellular components in the tumor microenvironment, damage the normal immune function or escape the immunosuppressive network, and further promote cell survival and metastasis. Herein, based on the characteristics and biological functions of circRNA, we elaborated on the effect of circRNA via circRNA-associated competing endogenous RNA (ceRNA) network by acting as miRNA/isomiR sponges on tumor angiogenesis, cancer cell migration and invasion, and interaction with the tumor microenvironment (TME), then explored the potential interactions across different RNAs, and finally discussed the potential clinical value and application as a promising biomarker. These results provide a theoretical basis for the further application of metastasis-related circRNAs in cancer treatment. In summary, we briefly summarize the diverse roles of a circRNA-associated ceRNA network in cancer metastasis and the potential clinical application, especially the interaction of circRNA and miRNA/isomiR, which may complicate the RNA regulatory network and which will contribute to a novel insight into circRNA in the future.