Pozzolanic activity of a spent fluid catalytic cracking catalyst residue

Permission is granted by ICE Publishing to print one copy for personal use. Any other use of these PDF files is subject to reprint fees.The reaction between a spent fluid cracking catalyst (FC3R) residue and portlandite was monitored over 56 days using several material characterisation techniques. The results showed that the residue was heterogeneous and composed of reactive and non-reactive fractions and that both fractions contained silicon and aluminium. After 56 days, the development of C-S-H gel was evident; part of the catalyst residue was pozzolanic. The CH combination could be monitored by thermogravimetry or X-ray diffraction, by measuring the signal corresponding to CH. However, due to the low crystallinity of cementing products and their complex stoichiometry, the above-mentioned techniques were less able to characterise C-A-S-H. However, nuclear magnetic resonance techniques allowed the evolution of the pozzolanic reaction to be evaluated and the hydrate products to be characterised. Thomas Telford Ltd & 2011.Garcés, P.; Glasser, FP.; Brew, DR.; Zornoza Gómez, EM.; Paya Bernabeu, JJ. (2011). Pozzolanic activity of a spent fluid catalytic cracking catalyst residue. Advances in Cement Research. 23(3):105-111. doi:10.1680/adcr9.00036S10511123

Empirical Legal Studies Before 1940: A Bibliographic Essay

The modern empirical legal studies movement has well-known antecedents in the law and society and law and economics traditions of the latter half of the 20th century. Less well known is the body of empirical research on legal phenomena from the period prior to World War II. This paper is an extensive bibliographic essay that surveys the English language empirical legal research from approximately 1940 and earlier. The essay is arranged around the themes in the research: criminal justice, civil justice (general studies of civil litigation, auto accident litigation and compensation, divorce, small claims, jurisdiction and procedure, civil juries), debt and bankruptcy, banking, appellate courts, legal needs, legal profession (including legal education), and judicial staffing and selection. Accompanying the essay is an extensive bibliography of research articles, books, and reports

Reflective Practices for Future Journalism: The Need, the Resistance and the Way Forward

In newsrooms journalists encounter numerous constraints accelerated by increasing technological and economic pressures. The complexity of the job and the need for (constant) innovation coupled with the rising call for transparency and accountability ask for journalists who "reflect-in-action". Newsroom ethnographies consistently suggest that journalists experience a gap between the wish for increased self-reflection and its actual practice. Additionally, both newsroom research and journalists’ expressions in the trade press show significant resistance against reflection as being a largely academic exercise, or simply too time-consuming. We propose that considering reflection primarily from a learning perspective can overcome this resistance. Secondly, the article acknowledges that in order to enable professionals to fit reflection into their precarious practice, critical reflection should develop out of the practice itself. Reflection only makes sense if it starts from the sense of immediacy and autonomy within journalistic practice, recognises the constraints that journalists face and acknowledges the aversion among journalists against standardised protocols in their craft. Outlining the basic tenets of reflective practice, journalism's current precarity and the learning perspective, we propose further research in how informal reflective practices can enhance professional autonomy