填料对ANAMMOX污泥活性恢复的影响及菌群特征

为实现室温下长期储存的厌氧氨氧化污泥的活性快速恢复,采用3组反应器分别对在室温(15～30℃)且无基质的条件下储存9个月的厌氧氨氧化污泥进行活性恢复,其中R2和R3反应器分别添加彗星纤维填料和K3填料作为生物载体,探究不同填料添加对厌氧氨氧化污泥活性恢复速率的影响.结果表明,R2和R3反应器分别在第8 d和第10 d开...     

天然气压缩机降噪工艺研究

通过天然气压缩机降噪治理,使增压站场厂界噪声达到GB 12348-2008《工业企业厂界环境噪声排放标准》2、3类功能区排放限值,减少噪声污染,是一项重要的环保工作。文章分析了噪声测量方法、天然气压缩机噪声产生机理、压缩机原始噪声测试、降噪工艺技术为:合理选择消声器,合理选定压缩机安装位置等。该工艺在降噪过程中没有涉及压缩机的机体改造,从而不会因降噪而影响机组各种设备的使用性能;机组的操作、检修、观察及机械声音判断等要求没有受到影响。     

核电厂主控室数字化对人执行状态评估任务影响

核电厂主控室进行数字化变革后,操纵员执行状态评估任务的方式发生了巨大变化。为了有效地识别及评估数字化对状态评估的潜在影响,以知觉/循环、资源限制等认知理论为基础,以贝叶斯概率网络为工具,建立状态评估可靠度的影响因素模型。定性分析这些因素对状态评估任务的影响机制,并定量比较它们的影响程度。分析结果表明,界面管理任务和任务负荷变迁,对状态评估的影响最为显著。需采取针对性的措施,优先处理这些人因问题,以最大限度地提高数字化核电厂的安全水平。     

Fundamentals of the Model Behind the COSMOS Methodology Used for Team Assessment in Simulator Training

Team working is the basic way of working in the control rooms of hazardous technologies and therefore its quality is a safety-relevant issue. In addition to the technological competence it is also crucial for the crews to have the necessary communicational skills. During simulator training these skills can only be improved if the simulator use is embedded in an appropriate setting. To support this skill acquisition a computer-supported methodology called COSMOS (COmputer Supported Method for Operators’ Self-assessment) has been developed. With its help more effective communication and more complete shared mental models can be fostered. This paper is a report on the psychological fundamentals and the mathematical model of the COSMOS methodology.     

Ensuring Cleanliness in Operating Theatres

High cleanliness of a hospital environment is necessary to ensure safe working conditions for the medical staff, a correct process of hospitalization and to protect hospital visitors, an aspect rarely mentioned. A supply of air cleaned in highly-effective air filters to hospital wards with air conditioning systems and exhaust of infected air will help in maintaining the required standards of cleanliness. This article presents information on recommended classes of air and surface cleanliness, with special focus on operating theatres and suites.     

Genome Stability vs. Deprivation or Enrichment of the Geomagnetic Field

Summary This study suggested that cell-cycle kinetics, DNA replication and DNA repair react to magnetic fields differently. During their culture growth cycle, which lasted about five days, Friend erythroleukemia cells were either kept in the absence of magnetic fields in a magnetically shielded room or irradiated in a solenoid with 70 μT at 50 Hz plus 45 μT DC of the Earth: some cells grew without inducer of in vitro differentiation; others were induced to differentiate hemoglobin through dimethylsulfoxide. It emerged that, during a single culture growth cycle, while proliferation was slightly accelerated by the magnetic-field irradiation achieved in the solenoid both in undifferentiating and dimethylsulfoxide-differentiating cells, DNA replication did not appear to significantly depend on the magnetic-field deprivation achieved in the magnetically shielded room. However, as a result of a 318-day long magnetic-field irradiation in the solenoid, DNA replication remained unchanged in undifferentiating cells and partially inhibited in dimethylsulfoxide-differentiating cells. Following the same long magnetic-field irradiation in the solenoid, the amount of labelled repair patches in the parental DNA strands was slightly reduced.     

大型空压机站及配套设施的噪声治理

南京扬子石化公司化工厂两座大型空压机站及配套设施功率高、体积大、噪声严重、影响面广。根据该机噪声的峰值频率集中在高频区域的特点，我们充分利用现场地形地物，采取科学合理的隔、吸、反射、消声等措施，用有限的资金，在短期内取得了较满意的降噪效果，并达到了国家有关的工业卫生标准。     

油田稳定压缩机泵房噪声控制的实践

研究分析了油田稳定压缩机泵房噪声危害的现状,拟定采用空间吸声体和隔声降低噪声的技术方案,实践证明噪声控制效果良好.     

浅谈室内空气污染和防治

简述了室内空气污染的种类及其对人体健康的危害,针对污染种类,从6个方面提出了控制室内空气污染的措施.     

两种铜合金复合板带室温轧制成形工艺及结合机制的研究

研究了黄铜 /紫铜 ,黄铜 /白铜复合板带室温轧制成形工艺 ,借助金相显微镜、扫描电镜、电子探针分析了复合工艺参数对轧制复合后的复合板结构强度的影响 ,确定了最佳复合工艺 ,并对结合机制进行了探讨