AHMED experiments on hygroscopic and inert aerosol behaviour in LWR containment conditions: experimental results

Hygroscopic NaOH, CsI, CsOH and inert Ag aerosol behaviour at different temperatures and relative humidities (RH) has been studied in a well instrumented and controlled vessel of 1.81 m³ total free volume. Homogeneous thermal-hydraulic conditions for aerosol measurement in the vessel were achieved. The aerosol number and mass concentration were measured continuously during the experiments using a Condensation Nucleus Counter and a Tapered Element Oscillating Microbalance. The particle size distribution and chemical composition in the test conditions were measured by Berner low pressure impactors. In the case of NaOH the half life of the aerosol mass concentration was more than four times longer at low RH (22%) as compared to high RH (96%). The half lives of the CsOH and CsI aerosols were only twice as long at low RH as compared to high RH. Thus at high RH (96–97%) the half lives of CsOH and CsI were twice as long as the half life for the NaOH aerosol. The faster decay of the NaOH aerosol is due to the smaller density decrease of NaOH during water condensation. CsOH particles grew rapidly to their equilibrium size at all humidities. The measured equilibrium size for CsOH aerosol agree well with the calculated particle size at different RHs. Experimental results were also compared with calculations obtained by severe accident computer codes. These calculated results will be presented in a later paper.     

Biomarkers in Glycogen Storage Diseases: An Update

Glycogen storage diseases (GSDs) are a group of 19 hereditary diseases caused by a lack of one or more enzymes involved in the synthesis or degradation of glycogen and are characterized by deposits or abnormal types of glycogen in tissues. Their frequency is very low and they are considered rare diseases. Except for X-linked type IX, the different types are inherited in an autosomal recessive pattern. In this study we reviewed the literature from 1977 to 2020 concerning GSDs, biomarkers, and metabolic imbalances in the symptoms of some GSDs. Most of the reported studies were performed with very few patients. Classification of emerging biomarkers between different types of diseases (hepatics GSDs, McArdle and PDs and other possible biomarkers) was done for better understanding. Calprotectin for hepatics GSDs and urinary glucose tetrasaccharide for Pompe disease have been approved for clinical use, and most of the markers mentioned in this review only need clinical validation, as a final step for their routine use. Most of the possible biomarkers are implied in hepatocellular adenomas, cardiomyopathies, in malfunction of skeletal muscle, in growth retardation, neutropenia, osteopenia and bowel inflammation. However, a few markers have lost interest due to a great variability of results, which is the case of biotinidase, actin alpha 2, smooth muscle, aorta and fibroblast growth factor receptor 4. This is the first review published on emerging biomarkers with a potential application to GSDs.     

S7系列PLC电气控制设计与应用 第10讲 S7 PLC的总线控制与GSD文件安装

在自动化工程项目中,应用PROFIBUS总线具有很多优点,其中一点就是不同品牌之间的互换性。本文介绍了S7 PLC的总线控制与GSD文件安装。     

PROFIBUS-DP在ABBAC450系统中的应用

本文在深入分析PROFIBUS-DP现场总线设备GSD文件结构的基础上，详细介绍了在ABB AC450控制系统中使用PROFIBUS-DP时的硬件配置和软件组态。     

PROFIBUS-DP总线及在烟草设备上的应用

阐述了PROFIBUS-DP现场总线的主要特点、协议结构、存取协议及GSD文件，并着重介绍了在烟草设备上的应用。     

Upgrading Computational Design

Shajay Bhooshan heads up the computation and design ZHACODE group at Zaha Hadid Architects (ZHA) and is a course master at the Architectural Association Design Research Laboratory (AADRL). Here he argues that Parametricism 2.0 has a vital role to play in the progressing of computational design. Assimilating the exploratory developments of the last 15 years, he asserts how the next phase of Parametricism will enable a further consolidation and evolution of digital practices.     

3UF7电机保护控制器在贵州赤天化纸业公司的应用

介绍了西门子Simoeode pro3UF7电机保护控制器的基本原理及其在贵州赤天化纸业公司的应用情况，并介绍了实际应用中遇到的问题和解决方法。     

Profibus现场总线仪表系统在应用中的几点分析

本文对Proibus现场总线仪表与主设备之间的数据传输格式、GSD设备文件描述以及总线仪表的工作原理和在实际应用中的几个注意问题进行了分析和阐述。     

基于优化DeepLabv3+的智能化高速铁路安全区域划分算法研究

针对目前电气化铁路沿线复杂背景下铁路安全区域划分均需采用实际固定标准件为参照物且区域划分范围小等问题,提出一种无需参照物的高速铁路安全区域划分算法.首先基于无人机所采集图像中的相关参数计算出相应的GSD(地面采样间距)参数,然后利用加入ECA-Net模块的DeepLabv3+模型对图像中的轨道进行精确分割.通过边缘检测、开运算、概率霍夫变换等一系列图像处理操作,提取出构成轨道的关键像素点,并运用最小二乘法进行轨道拟合,得出轨道数学表达式.最后,结合数学算法和GSD参数以及轨道数学表达式,完成安全区域的划分.实验结果表明,所提算法测量精度高达90％以上,无需选取固定参照物,适应性强、鲁棒性高,具有较高的实用性和可靠性.     

Profibus现场总线技术在啤酒生产中的应用

计算机数字通信技术及信息技术的发展,推动了自动化技术的进步。采用PROHBUS现场总线技术可以有效解决现有采用PLC系统生产线存在的问题,给企业带来巨大的利益。