基于PLC和MGCS的天然有机垃圾处理机控制系统

介绍了天然有机垃圾处理机的工艺流程及控制要求,提出了以S7-200及MCGS为核心的控制系统,阐述了系统的硬件配置、软件设计及上下位机之间的通讯。实际生产应用表明,系统可靠,效果良好,人机界面功能友好。     

采用QuEChERS结合UHPLC-MS/MS定量分析热加工肉制品中的三种胺类物质

本文采用QuEChERS技术结合超高效液相色谱-串联质谱（UHPLC-MS/MS）技术建立同时检测丙烯酰胺（AA）、亚硝胺（NAs）和杂环胺（HAAs）含量的方法，用于分析热加工肉制品中产生的胺类物质。结果表明:该方法检测出的三类成分20种胺类物质在相应浓度范围内显示出良好的线性关系（R2>0.991），检测限和定量限分别为0.01~1.6 ng/g和0.03~4.8 ng/g，日内回收率介于66.3%~116.5%之间，日内精密度介于0.78%~9.0%之间。每个胺类物的5×LOQ加标水平计算的日间精度范围为3.4%~9.4%。该方法应用于煎烤的四种肉制品中AA、NAs和HAAs的分析，共检测出9种胺类物质，浓度范围为0.03~31.26 ng/g。     

基于GIS技术的工程地质环境系统构建及治理分析

针对传统的工程地质环境系统存在的收集图像与原始图像同向性较低的问题,以下开展了基于GIS技术的工程地质环境系统的构建研究。采用设计对比实验的方式验证该系统在实际应用过程中,可提升收集图像与原始图像的同向程度。     

钒氧化还原液流电池负极电解液的研究进展

钒氧化还原液流电池作为一种较为理想的大规模储能技术,近年来已在多个国家和地区投入实际应用.其电解液负责存储和提供电活性物质,性能直接影响电池的充放电效率和容量,因此,研究并提高其性能是钒电池应用和发展的重要课题之一.本文从溶解规律和稳定性、钒离子的存在形式和性能优化等方面综述了钒电池负极电解液的研究进展情况,并对今后的研究方向进行了展望.     

Research on Wind Turbines Fault Diagnosis Technology Based on CMS Data Feature Extraction

Wireless Personal Communications - As a rich clean and environmentally friendly renewable resources, wind energy has emerged as a strategic choice for countries around the world. Because the...     

CD34⁺ CD38^- subpopulation without CD123 and CD44 is responsible for LSC and correlated with imbalance of immune cell subsets in AML

Acute myeloid leukemia (AML) is regarded as a stem cell disease. However, no one unique marker is expressed on leukemia stem cells (LSC) but not on leukemic blasts nor normal hematopoietic stem cells (HSC). CD34⁺ CD38- with or without CD123 or CD44 subpopulations are immunophenotypically defined as putative LSC fractions in AML. Nevertheless, markers that can be effectively and simply held responsible for the intrinsical heterogeneity of LSC is still unclear. In the present study, we examined the frequency of three different LSC subtypes (CD34⁺ CD38^-, CD34⁺ CD38^- CD123⁺ , CD34⁺ CD38^- CD44⁺ ) in AML at diagnosis. We then validated their prognostic significance on the relevance of spectral features for diagnostic stratification, immune status, induction therapy response, treatment effect maintenance, and long-term survival. In our findings, high proportions of the above three different LSC subtypes were all significantly characterized with low complete remission (CR) rate, high relapse/refractory rate, poor overall survival (OS), frequent FLT3-ITD mutation, the high level of regulatory T cells (Treg) and monocytic myeloid-derived suppressor cells (M-MDSC). However, there was no significant statistical difference in all kinds of other clinical performance among the three different LSC groups. It was demonstrated that CD34⁺ CD38^- subpopulation without CD123 and CD44 might be held responsible for LSC and correlated with an imbalance of immune cell subsets in AML.     

隔河岩水电站水资源的高效利用与水害防范

总结隔河岩水电站调度运行中的实践经验,通过梯级发电重复利用水能、依据精准水情预报减少弃水抢发、缩短高水耗运行时间及利用综合特性曲线降低过机流量等,提高水资源的高效转换,既取得了巨大的防洪效益和良好的经济效益,也丰富了优化调度的经验。