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随着装备国产化、小型化、高可靠的发展,同时受进口元器件禁运风险的影响,裸芯片的使用越来越广泛。而目前生产厂家缺少对芯片进行筛选、试验的有关标准。组件模块级的电老练应力无法剔除装入其中存在早期失效缺陷的芯片,组件的长期可靠性难以保证。本文结合我所实际情况,针对不同的类别的芯片形成了详细的质量管理方法。阐述了通过设计过程控制、制造工艺过程监视、筛选试验过程表格化、数据包过程规范化并细化芯片应用要求等质量控制流程,有效保证产品实物质量与可靠性。 相似文献
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2014年可以说是H.265的元年——海思推出首款H.265的编码芯片3516A。随着这颗具有跨时代意义芯片的诞生,高清时代所必须的高清晰、低带宽实现了"更上一层楼"。从H.264诞生到今年已经有十个年头,在这十年间H.264对推动高清的发展和普及立下了汗马功劳,从而实现了"江湖一统"的局面。目前市面上几乎所有的网络编码都是基于H.264编码,但是随着对分辨率要求的不断提升,更大路数的联网以及存储空间的激增,让H.264的编码压缩变得越来越难以应付。基于这一点,H.265在 相似文献
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The uterotrophic assay has been commonly used to test environmental estrogens in vivo, however, it is often not sensitive enough sometimes. An alternative way is to evaluate estrogenicity through biomarker genes. MicroRNA (miRNA) is a class of regulatory gene, which has been shown to be a good biomarker for many diseases and toxicological effects in recent years, and some evidences showed that estrogen induced response was partially mediated by miRNAs. In this study, two types of microarrays were used to test the 17[3-estradiol (E2) induced miRNA expression profile at different time points in the immature mouse uterus. Statistical analysis showed the aldehyde slide based array had less variation than the amino slide based array, and 11 dysregulated miRNAs were screened out for significant fold change. Real-time PCR was performed to further confirm that 4 out of 7 selected miRNAs, namely miR-451, miR-155, miR-335- 5p, and miR-365, are E2 regulated miRNAs in the uterus. The function of the predicted targets of these miRNAs is involved in cell grow control, which is consistent with the main E2 function in the uterus. MiR-451 had similar strong responses to E2 in the uterus of both immature and overiectomized mice, and could be a potential biomarker for estrogenicity in the uterus. 相似文献
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视频监控市场的发展安全防范在构建平安城市与和谐社会中发挥着越来越重要的作用,其中视频监控已发展成安全防范系统的核心。近年来,国家为视频监控产业的发展提供了良好的环境,颁布了多项政策文件,将其列位为优先鼓励发展的产业,行业有了很好的发展势头。同时"平安城市"、"科技强警"建设的开展以及2010年上海世博会和广州亚运会等大型活动的 相似文献
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安防视频监控市场的高速发展为安防芯片的发展注入了强大的动力。从技术发展趋势看,安防监控网络化的发展趋势将不可逆转,而视频处理智能化也将成为安防视频监控的下一个重要发展方向。随着安防视频监控向网络化、智能化、高清化方向发展的进一步延伸,对安防芯片也提出了更多和更高的要求。本文将针对安防网络化、智能化、高清化的特点,简要分析当前安防芯片技术发展与应用情况。 相似文献
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