桥电六期工程3#炉灭火保护改进

文章主要论述在调试青海桥头发电厂六期３＾＃炉期间，发现该炉灭火保护中的燃料中断分保护存在的不足，影响了锅炉的安全运行。根据保护逻辑设计原理，经过分析、讨论，对其进行了改进，并予以实施。还叙述了改进后的操作方法，并在３＾＃炉试运期间及试生产阶段投入，取得了良好效果。     

埕海一区人工井场井口及井眼轨迹优化

针对密集井口丛式井钻井时存在井眼碰撞问题,文中通过研究井场与构造的相对位置,分析井口与目标的对应关系,科学安排井口与钻井目标,优化井眼剖面,合理分布井眼轨道,整体考虑钻井施工方案,防止了井眼碰撞.埕海一区人工井场有76个井口槽,计划钻井51口,其中21口大位移井,且均集中在30°扇区内,在开钻前制订了完整的钻井方案.目前,该钻井方案正在实施过程中,从已经完成的钻井施工来看,仅有一口井因测量仪器出现问题而产生与邻井碰撞,其他井实施基本顺利.     

Single Iron Site Nanozyme for Ultrasensitive Glucose Detection

Nanomaterials with enzyme‐mimicking characteristics have engaged great awareness in various fields owing to their comparative low cost, high stability, and large‐scale preparation. However, the wide application of nanozymes is seriously restricted by the relatively low catalytic activity and poor specificity, primarily because of the inhomogeneous catalytic sites and unclear catalytic mechanisms. Herein, a support‐sacrificed strategy is demonstrated to prepare a single iron site nanozyme (Fe SSN) dispersed on the porous N‐doped carbon. With well‐defined coordination structure and high density of active sites, the Fe SSN performs prominent peroxidase‐like activity by efficiently activating H₂O₂ into hydroxyl radical (?OH) species. Furthermore, the Fe SSN is applied in colorimetric detection of glucose through a multienzyme biocatalytic cascade platform. Moreover, a low‐cost integrated agarose‐based hydrogel colorimetric biosensor is designed and successfully achieves the visualization evaluation and quantitative detection of glucose. This work expands the application of single‐site catalysts in the fields of nanozyme‐based biosensors and personal biomedical diagnosis.     

Boron Phosphide Nanoparticles: A Nonmetal Catalyst for High‐Selectivity Electrochemical Reduction of CO2 to CH3OH

Electrocatalysis has emerged as an attractive way for artificial CO₂ fixation to CH₃OH, but the design and development of metal‐free electrocatalyst for highly selective CH₃OH formation still remains a key challenge. Here, it is demonstrated that boron phosphide nanoparticles perform highly efficiently as a nonmetal electrocatalyst toward electrochemical reduction of CO₂ to CH₃OH with high selectivity. In 0.1 m KHCO₃, this catalyst achieves a high Faradaic efficiency of 92.0% for CH₃OH at ?0.5 V versus reversible hydrogen electrode. Density functional theory calculations reveal that B and P synergistically promote the binding and activation of CO₂, and the rate‐determining step for the CO₂ reduction reaction is dominated by *CO + *OH to *CO + *H₂O process with free energy change of 1.36 eV. In addition, CO and CH₂O products are difficultly generated on BP (111) surface, which is responsible for the high activity and selectivity of the CO₂‐to‐CH₃OH conversion process.     

关系图法在所得税会计教学中的应用

介绍了关系图的建立及其在所得税会计教学中的具体应用。     

现代企业制度与企业统计工作

本文论述了在社会主义市场经济条件下建立现代企业制度的基本形势，以及企业统计工作在新形势下如何在转变观念、提高素质、适合需要、强化服务四个方面狠下功夫以不断提高企业统计工作水平，为建立和完善现代企业制度创造条件。     

用于就地化保护关键技术的SoC设计

以解决变电站继电保护中存在因多个功能芯片导致的系统可靠性降低、运维难度增大为目的,提出了基于双核Cortex-A9的自研智能就地化保护SoC芯片。该芯片通过采用基于节点冗余算法的HSR环网结构,确保环内任何一个元件或链路阻塞时,报文均能沿另一方向传递至主机。使用多采样率多通道的动态可重构ADC采集模块,使芯片可以根据不同实时性要求进行软件修改。采用时钟数据恢复对FT3码流进行处理,以提高信息传输的可靠性。在UMC55工艺下,完成了该芯片的版图设计,芯片面积为5.3×5.3 mm,主时钟频率可达到500 MHz。仿真结果验证了所提出芯片的可行性和先进性。     

900 mm冷连轧机模拟配管

在900mm冷连轧机的配管装配中．采用模拟配管工艺，节省时间保证了交货期。     

强迫油循环水冷变压器温度计频繁报警分析及处理

对某水电站原主变油温度计、绕组温度计频繁报警的原因进行分析,提出有效的解决办法,以提高该水电站主变冷却控制系统油温度计、绕组温度计运行的稳定性.     

非正交二值子空间模板表示的并行生成

非正交二值子空间是一种重要的图像模板表示方法,能够高效地进行模板匹配。针对其生成过程耗时多难以实时应用的问题,提出了一种基于统一计算设备架构(CUDA)的非正交二值子空间模板表示的快速并行生成算法。该算法将模板生成过程划分为3个步骤,并根据每个步骤数据处理的特点,进行并行任务分解,极大地缩短了生成时间。实验结果表明,相比基于CPU生成相同的模板表示,该算法的速度提升了60～120倍。在应用于模板匹配时,该并行的模板表示生成算法能够很好的改进匹配效率。