These isotopic data are useful to modelers who quantify the global or regional methane budgets by comparing the isotopic compositions of methane in ambient air with the isotopic compositions of the aggregate of flux-weighted sources. Temporal and spatial isotopic variations in the database are also useful for distinguishing the types of methane in subsurface natural gas exploration and for understanding wetland methanogenic pathways. You will be able to search on a specific database record number. The Statistical Reference Datasets is also supported by the Standard Reference Data Program. The purpose of this project is to improve the accuracy of statistical software by providing reference datasets with certified computational results that enable the objective evaluation of statistical software.
Liquid molding is an important manufacturing technique for modern reinforced polymers.
Though databases containing information on structural and other properties of composites exist, there are no databases supporting the molding process. NIST Heat Transmission Properties of Insulating and Building Materials provides a valuable reference for building designers, material manufacturers, and researchers in the thermal design of building components and equipment. Several organizations, including ASTM and ISO, have standardized the method. These reference functions have been adopted as standards by the American Society for Testing and Materials and the International Electrotechnical Commission.