合成生物学在农残检测领域的应用

近年来,合成生物学在多个领域崭露头角,在农残检测中也发挥着越来越重要的作用。基于合成生物学模块化和工程化指导思想,各种基因部件的多样化组合为农残检测提供更多方案。简便、耐用、低成本、原位检测等特点也使其较传统检测手段具有更强的竞争力。但与此同时,合成生物学在农残检测中的应用也受到复杂检测环境和生物安全性等问题的影响。结合目前合成生物学在有机氯、有机磷、拟除虫菊酯和氨基甲酸酯类农药检测中的应用与创新实例,归纳合成生物学在农残检测中应用的原理,分析并探讨合成生物学技术未来在农残检测中的发展潜力与应用前景。     

Finite Element Computation of KPP Front Speeds in Cellular and Cat’s Eye Flows

We compute the front speeds of the Kolmogorov-Petrovsky-Piskunov (KPP) reactive fronts in two prototypes of periodic incompressible flows (the cellular flows and the cat’s eye flows). The computation is based on adaptive streamline diffusion methods for the advection-diffusion type principal eigenvalue problem associated with the KPP front speeds. In the large amplitude regime, internal layers form in eigenfunctions. Besides recovering known speed growth law for the cellular flow, we found larger growth rates of front speeds in cat’s eye flows due to the presence of open channels, and the front speed slowdown due to either zero Neumann boundary condition at domain boundaries or frequency increase of cat’s eye flows.     

大型遥控铲运机在田兴铁矿应用前景展望

为了满足田兴铁矿阶段空场嗣后充填采矿法出矿工艺需要,采用遥控铲运机进入大空区出矿,有效地解决了工作人员的人身安全问题,提高了矿山的采矿效率,降低了矿山生产运营成本。国外先进矿山已经成功实现了井下无轨设备自动化,无人采矿、自动化矿山设备在国内矿山的应用是发展趋势,同时也是势在必行的。     

数控加工中心ATC弧面分度凸轮运动学问题研究

推导了弧面凸轮压力角和诱导主曲率的计算公式，对数控加工中心凸轮式自动换刀机械手(ATC)弧面分度凸轮的压力角和曲率进行了详细的分析，为ATC的优化设计和研究提供了理论基础，有助于ATC机构产品系列化的完成。     

Single-molecule biotechnology for protein researches

Cells employ proteins to perform metabolic functions and maintain active physiological state through charge transfer and energy conversion. These processes are carried out in a narrow space precisely and rapidly, which, no doubt, bring great difficulty for their detection and dissection. Fortunately, in recent years, the development and expansion of single-molecule technique in protein research make monitoring the dynamical changes of protein at single-molecule level a reality, which also provides a powerful tool for the further exploration of new phenomena and new mechanisms of life activities. This paper aims to summarize the working principle and essential achievements of single-molecule technique in protein research in recent five years. We focus on not only dissecting the difference of nanopores, atomic force microscope, scanning tunneling microscope, and optical tweezers technique, but also discussing the great significance of these single-molecule techniques in investigating intramolecular and intermolecular interactions, electron transport, and conformational changes. Finally, the opportunities and challenges of the single-molecule technique in protein research are discussed, which provide a new door for single-molecule protein research.     

年产100万吨棒材生产线优化设计

介绍了莱钢永锋厂年产100万吨棒材生产线工程,重点介绍了该生产线采用新的工艺技术,用较少的投入,较短的时间,完成工艺设计、设备选型、设备安装、试生产直至达产,有较好的借鉴、推广应用价值.     

5G-oriented Virtual Augmented Reality Scene Construction and Business Information Flow Demonstration

Mobile Networks and Applications - Aiming at the problems of large data volume, long calculation time, and information feedback speed in traditional virtual augmented reality-based scenes, this...     

遗产保护视角下的国家公园建设

国家公园是国家的重要遗产。该文首先从遗产保护的视角比较分析了北美和西欧两种不同的国家公园模式。其次,结合我国当前建设国家公园体制的现实需要,对我国的风景遗产特征,风景保护存在的问题进行梳理,指出在国家公园建设的探索中,我国比较注重研究借鉴美国的国家公园模式,但对西欧模式重视不够。最后,从国家公园体系、目标、管理机制等方面对我国的国家公园建设提出建议与思考。     

乙烯氧氯化反应过程微机辅助监测优化的实现

工业氯乙烯生产装置是一类大规模存在的化工工业装置，本文针对其中乙烯氧氯化法反应过程特点设计的微机辅助监测优化系统，对该过程的运行特征进行在线监测，并进行数据处理和工艺分析，为该过程的优化提供了依据，此外，对这一类的化工工业装置微机辅助监测优化系统设计进行探讨，为如何在工业装置优化领域利用计算机这一先进工具提供了一个范例，并就此提出了具有普遍意义的功能模型和运行逻辑，以供类似的系统开发借鉴。