Effects of CMC and Micelle Formation on the Removal of Sodium Benzoate or Sodium Stearate in a Sodium Aluminate Solution

JOM - Micelle formation over a critical micelle concentration (CMC) is related to the economic removal of organics in a sodium aluminate solution. In this research, removal of organics was...     

超深溜井爆破一次成井技术实践

为解决溜井掘进效率低、安全性差等问题，以柿竹园多金属矿掘进出矿溜井为例，提出了爆破一次成井技术，根据矿山具体爆破条件，设计了布孔参数、装药结构和起爆顺序等。实践表明，爆破一次成井技术施工天井效果良好，溜井贯穿上下2个分段，与设计相符，相较于普通法施工天井，节约成本30.7%，节约时间58.3%，经济效益显著，施工周期短，且安全性好，值得在其他类似矿山推广应用。     

Feasibility of CANON process for treating nitrogenous wastewater containing heavy metals

The appearance of heavy metals in wastewater brings a major burden to wastewater treatment plants, due to the high toxicity to microorganisms. Several commonly used heavy metals, including Zn(II), Cd(II), Hg(II), and Pb(II) were adopted to clear the individual and joint toxicity to the completely autotrophic nitrogen removal over nitrite (CANON) process in six sequencing batch reactors. The obtained results suggested that the nitrogen removal performances were transiently inhibited, but rapidly recovered. The restoration period under the stress of Hg(II) and Pb(II) was shorter than that under Zn(II), Cd(II), and the joint heavy metals. During the long-term exposure, Cd(II) in 1mg L⁻¹ slightly inhibited the nitrogen removal, while Zn(II), Hg(II), Pb(II), and mixture showed a negligible impact on CANON process. The defense of extracellular polymeric substances (EPS), the good adaptability of functional bacteria, and the inducement of resistant genera by heavy metals all contributed to the robustness and stability of CANON process. Therefore, it is feasible to treat nitrogenous wastewater containing low heavy metals using CANON process. © 2020 Society of Chemical Industry     

基于异构网络的纺织设备数据采集系统设计

针对现有纺织设备数据采集系统数据接口复杂、数据量较大、通信环境恶劣,开发了一种基于Modbus/TCP与Modbus RTU的异构通信网络实现实时数据采集系统;该系统基于浏览器/服务器(B/S)架构,可以独立运行,也可以与已有的管理系统集成。该系统具有兼容性好、抗干扰能力强的特点,满足纺织数据通信量大、时间延迟较小、通信环境复杂等实际应用要求。系统已投入多个纺织厂,可以实现纺织数据实时采集、处理、存储,保证在纺织生产数据及时有效的可视化显示。用户可以在PC端或移动端进行远程监控,历史数据会持久化到MySQL数据库中便于用户进一步分析、处理。     

含氟荧光化学传感器研究进展

文章综述了近年来含氟荧光化学传感器对多种金属阳离子、中性分子以及阴离子等的识别进展,并列举了其在化学、生物、环境等领域的选择性识别应用,同时展望了含氟荧光化学传感器的未来应用发展趋势。     

强化矿山救护队员人身安全的措施

通过对矿山救援现状的了解,发现其中存在的问题和隐患,并制定有效且适用的维护救护队员安全的解决措施,提高救援安全性,维护救援队员的人身安全,并为救援及相关人员提供参考和借鉴。     

瞬变电磁法在封堵不良钻孔探测中的应用

利用矿井瞬变电磁快速、无损、对低阻体反应灵敏的特点,对巷道前方封堵不良钻孔的富水性进行了探测,并通过钻探进行了验证,为封堵不良钻孔的治理工作提供了依据,在保障煤矿安全生产的同时避免了资源的浪费。     

MiR-30b Is Involved in the Homocysteine-Induced Apoptosis in Human Coronary Artery Endothelial Cells by Regulating the Expression of Caspase 3

Homocysteine (Hcy) is an independent risk factor for a variety of cardiovascular diseases, such as coronary heart disease, hypertension, stroke, etc. There is a close relationship between the vascular endothelial cell apoptosis and these diseases. Recent studies have shown homocysteine can induce apoptosis in endothelial cells, which may be an important mechanism for the development of theses cardiovascular diseases. Although there are several reports about how the Hcy induces apoptosis in endothelial cells, the exact mechanism is not fully understood. MicroRNAs are small, non-coding RNA. Previous studies have shown that there is a close relationship between several microRNAs and cell apoptosis. However, there are no studies about the role of microRNAs in Hcy-induced apoptosis in endothelial cells so far. In this study, we constructed the model of homocysteine-induced apoptosis in human coronary artery endothelial cells (HCAECs) and found miR-30b was significantly down-regulated by 1 mmol/L Hcy. In addition, overexpression of miR-30b can improve the Hcy-induced apoptosis in HCAECs by downregulating caspase-3 expression. Therefore, miR-30b may play an important role in Hcy-induced apoptosis in endothelial cells.