How reproducible are surface areas calculated from the BET equation?

Porosity and surface area analysis play a prominent role in modern materials science. At the heart of this sits the Brunauer-Emmett-Teller (BET) theory, which has been a remarkably successful contribution to the field of materials science. The BET method was developed in the 1930s for open surfaces but is now the most widely used metric for the estimation of surface areas of micro- and mesoporous materials. Despite its widespread use, the calculation of BET surface areas causes a spread in reported areas, resulting in reproducibility problems in both academia and industry. To prove this, for this analysis, 18 already-measured raw adsorption isotherms were provided to sixty-one labs, who were asked to calculate the corresponding BET areas. This round-robin exercise resulted in a wide range of values. Here, the reproducibility of BET area determination from identical isotherms is demonstrated to be a largely ignored issue, raising critical concerns over the reliability of reported BET areas. To solve this major issue, a new computational approach to accurately and systematically determine the BET area of nanoporous materials is developed. The software, called "BET surface identification" (BETSI), expands on the well-known Rouquerol criteria and makes an unambiguous BET area assignment possible

The Role of Social Media in Citizen’s Political Participation

Part 5: Social Media and Open ComputingInternational audienceSocial media is becoming important tool for political participation and engagement. Interaction in social media has a strong influence on the propensity to participate in politics. In this research, we argue that IS is in the right position to improve understanding of social media influence in political communication and participation. In this study, the role of social media for political participation is discussed and the result shows that social media plays great role in terms of replacing traditional media, facilitating political engagement, strengthening strategic collaboration as well as the potential to influence governments decisions in relation with politics. We employed qualitative research methodology and concept analysis technique to transcribe interview that can help to identify and arrange the ideas and views of interviewees. Our study explored how citizens engaged in politics through social media. Thus, the media industry, political consultants, politicians, and citizens will need to adjust their behaviors to leverage this new competitive environment abstract should summarize the contents of the paper in short terms, i.e. 150–250 words