Pulsed flow chemistry: a new approach to solution handling for flow analysis coupled with chemiluminescence detection

The Analyst ◽  
2000 ◽  
Vol 125 (10) ◽  
pp. 1869-1874 ◽  
Author(s):  
Simon W. Lewis ◽  
Paul S. Francis ◽  
Kieran F. Lim ◽  
Graeme E. Jenkins ◽  
Xue D. Wang
1998 ◽  
Vol 35 (3) ◽  
pp. 97-101 ◽  
Author(s):  
Xue D. Wang ◽  
Terence J. Cardwell ◽  
Robert W. Cattrall ◽  
Graeme E. Jenkins

Molecules ◽  
2020 ◽  
Vol 25 (12) ◽  
pp. 2897
Author(s):  
Paweł Kościelniak

A brief overview of articles published in this Special Issue of Molecules titled “Modern Flow Analysis” is provided. In addition to cross-sectional and methodological works, there are some reports on new technical and instrumental achievements. It has been shown that all these papers create a good picture of contemporary flow analysis, revealing the most current trends and problems in this branch of flow chemistry.


2017 ◽  
Vol 1 (1) ◽  
pp. 29 ◽  
Author(s):  
Lukas Macura ◽  
Miroslav Voznak

Today, network technologies can handle throughputs up to 100Gbps, transporting 200 million packets per second on a single link. Such high bandwidths impact network flow analysis and as a result require significantly more powerful hardware. Methods used today concentrate mainly on analyzes of data flows and patterns. It is nearly impossible to actively look for anomalies in network packets and flows for a small amount of change of monitoring patterns could result in big increases in potentially false positive incidents. This paper focuses on multi-criteria analyzes of systems generated data in order to predict incidents. We prove that systems generated monitoring data are an appropriate source to analyze and enable for much more focused and less computationally intensive monitoring operations. By using appropriate mathematical methods to analyze stored data it is possible to obtain useful information. During our work, some interesting anomalies in networks were found by utilizing simple data correlations using monitoring system Zabbix. We concluded that it is possible to declare that deeper analysis is possible due to Zabbix monitoring system and its features like Open-Source core, documented API and SQL backend for data. The result of this work is a new approach to the analysis containing algorithms which allow to identify significant items in monitoring system. This is an Open Access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.


Author(s):  
Heidrun Moschitz ◽  
Rebekka Frick

Abstract The aim of this paper is to present and discuss a new approach to assess a city's supply with food from the nearby region: the city food flow analysis. In view of the growing challenges of the global food system, the local level has increasingly been identified—both by citizen-consumers and city administrations—as a relevant scale to develop sustainable alternatives. Although different actors often agree on the aim to increase local food supply, the discussions and initiatives convey the lack of knowledge and data about the actual origin of food supplied to cities. Without knowing where food comes from and through which channels it reaches the consumer, it is difficult to develop alternatives that could eventually change the food system. This paper presents and discusses the city food flow analysis as a methodology to close this lack of information. It consists of a four-step approach that leads to a clear picture on the local food production around a city, the consumption of local food in a city and the importance of different supply chains for local food in the city, including retail and gastronomy. The methodology is illustrated with the example of two cases (cities). The city food flow analysis provides detailed information about the current situation of urban food provisioning, which city stakeholders can use to start an informed discussion process about necessary changes in the food system, re-embedding of cities into their territorial context. However, data are not always fully available, which is a result in itself that illustrates the challenges of re-localizing local food provisioning.


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