The purpose of this study is to use a NIST fluorescence based measurement technique to add to the existing data on aqueous diesel adsorption to solid surfaces and to support the development of flushing and contamination models. In a previous study the diesel excess surface density was measured on an oxidized copper surface. The present study expands the database to diesel attachment to a polyvinyl chloride (PVC) surface and to an iron surface.

A model is presented that describes the heat transfer through a gypsum wallboard partition assembly incorporating the mass transport effects of water in liquid and vapor form. Sources of water include surface bound (adsorbed) water and hydrated water that is chemically bound with the crystal matrix of gypsum. Liberated water is allowed to migrate through the porous structure through molecular diffusion and pressure driven flow. Evaporation or condensation occurs when the partial pressure of water vapor with the pore space is less than or greater than the saturation pressure, respectively....

This document discusses the procedures for submitting a flow meter for calibration, gives the readily available pipe sizes and flanges suitable for flow meter calibration, documents the format of a standard NIST calibration report, and states the normal range of data collected for a calibration. In addition, this document describes the theory, principle of operation, and uncertainty of the 26 m3 PVTt primary flow standard covering the flow range from 200 L/min to 77000 L/min. Details concerning the two smaller PVTt flow standards can be found in the following reference.

Economic tools are needed to help the owners and managers of buildings, industrial facilities, and other critical infrastructure to select cost-effective combinations of mitigation strategies that respond to natural and man-made hazards. Economic tools include evaluation methods, standards that support and guide the application of those methods, and software for implementing the evaluation methods. This document focuses on Version 4.0 of the Cost-Effectiveness Tool (CET 4.0); it describes: the input data requirements for the software, the hierarchy of software screens, the evaluation methods...