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More than any other facet of resilience, social resilience raises the inherent tension within the concept between identity or persistence, and transformation. Is a community the people who make it up, or the geography or physical infrastructure they share? What about the resilience of communities that transform, as a result of a sudden disaster or...
Four methods for evaluating the dustiness of powders have been compared. The relatively new UNC Dustiness Tester first described by Boundy et al. (2006) in the Annals of Occupational Hygiene, which was developed specifically for the measurement of hazardous and/or highly potent substances, a single-drop device, a rotating-drum method, and a continu...
The German guideline VDI 3790, part 3 defines a procedure to quantify dust emissions from diffusive sources. The weighting factor "a" determined by visually estimating the tendency of a bulk material to generate dust emissions during its handling/transhipment appears to be error-prone. Measuring the dustiness behaviour of a material on the laborato...
The dustiness of 12 test powders was determined using three different measuring methods. One of the methods, the continuous drop method, is a reference test method according to the EN 15051 'Workplace atmospheres--Measurement of the dustiness of bulk materials--Requirements and reference test methods'. A test of equivalence between the reference te...
Die DIN EN 15051 „Arbeitsplatzatmosphäre – Messung des Staubungsverhaltens von Schüttgütern” beschreibt zwei Referenzprüfverfahren zur Bestimmung der Staubungsneigung von Pulvern am Arbeitsplatz und gibt des Weiteren eine Vorgehensweise vor, wie weitere Apparaturen auf ihre Gleichwertigkeit zu diesen Referenzen hin zu testen sind. Im vorliegenden F...
The dustiness of powders can be determined in a variety of ways. Two methods and the equipment they require are described as "reference test methods" in the European standard EN 15051 "Workplace atmosphere - Measuring the dustiness of bulk goods". Comparison measurements of dusting behaviour were performed on twelve powder substances using one of t...