U.S. Department

Acknowledgments. Folkmar Bornemann greatfully acknowledges the hospitality of the Courant Institute of Mathematical Sciences, New York University, where he spent the academic year 96/97. His work was supported in part by the U.S. Department of Energy under contract DE-FG02-92ER25127. 

Analysis sheet for Simulated Rainwater (SRM 2694a). Adapted from NIST Special Publication 250 Standard Reference Materials Catalog 1995-96, p. 54 U.S. Department of Commerce, Technology Administration, National Institute of Standards and Technology. 

Inorganic Chemicals Series M28N, Bureau of the Census, U.S. Department of Commerce, Washington, D.C., aimual reports, 1978—1980. 

The U.S. Food and Dmg Administration regulates acetal resins intended for repeated contact with food. The FDA regulation for homopolymer is 21CFR 177.2480 and that for copolymer is 21CFR 177.2470. The U.S. Department of Agriculture regulates the use of acetal resins in contact with meat and poultry. 

The U.S. Department of Labor (OSHA) has ruled that an employee s exposure to dimethyl acetamide in any 8-h work shift of a 40-h work week shall not exceed a time-weighted average of 10 ppm DMAC vapor in air by volume or 35 mg/m in air by weight (7). If there is significant potential for skin contact with DMAC, biological monitoring should be carried out to measure the level of DMAC metaboHtes in urine specimens collected at the end of the shift. One industrial limit is 40 ppm DMAC metaboHtes, expressed as AJ-methylacetamide [79-16-3] for individuals, and 20 ppm metaboHte average for workers on the job (8). 

Guidebook for Initial Response to Haspirdous Materials Incidents, DOT P 5800.4, U.S. Department of Transportation, Washington, D.C., 1987. Emergeny Handling of Haspirdous Materials in Suface Transportation, Bureau of Explosives, Association of American Railroads, Washington, D.C., 1981. 

Syracuse Research Corporation, Information Profiles on Potential OccupationalHa rds, Vol. 1, Single Chemicals Acroleiu, NTIS PB81-147951, U.S. Department of Commerce, Spriagfteld, Va., 1979, p. 11. 

D. H. Slade, ed.. Meteorology and Atomic Pnergy 1968, U.S. Atomic Energy Commission, July 1968 available as TlD-24190, Cleatinghouse for Eederal Scientific and Technical Information National Bureau of Standards, U.S. Department of Commerce, Sptingfteld, Va. 

D. B. Turner, Workbook of Atmospheric Dispersion Estimates, US EPA, OAP, Pub. AP26, Research Triangle Park, N.C., revised 1970, U.S. Department Printing Office Stock No. 5503-0015. 

J. A. Danielson, Air Pollution Engineering Manual, Pub. No. 999AP-40, U.S. Department of Health, Education, and Welfare, Cincinnati, Ohio,... 

I. Langmuir and K. B. Blodgett, U.S. Mmy Mir Forces Technical Report 5418, Februay 19, 1946, U.S. Department Commerce, Office Technical Services PB 27565. 

Produced from Co l. Estimates of the cost of producing methanol from coal have been made by the U.S. Department of Energy (DOE) (12,17) and they are more uncertain than those using natural gas. Experience in coal-to-methanol faciUties of the type and size that would offer the most competitive product is limited. The projected costs of coal-derived methanol are considerably higher than those of methanol produced from natural gas. The cost of the production faciUty accounts for most of the increase (11). Coal-derived methanol is not expected to compete with gasoline unless oil prices exceed 0.31/L ( 50/bbl). Successful development of lower cost entrained gasification technologies could reduce the cost so as to make coal-derived methanol competitive at oil prices as low as 0.25/L ( 40/bbl) (17) (see Coal conversion processes). 

Office of Pohcy, Planning, and Analysis, Assessment of Costs and Benefits ofElexible and Alternative Euel Use in the U.S. Transportation Sector, Technical Report 3 (Methanol Production and Transportation Costs) Pub. DOE/P/E—0093, U.S. Department of Energy, Washington, D.C., Nov. 

D. S. Kostick, SodaMsh and Sodium Sufate Minerals Yearbook—1988, U.S. Department of the Interior, Washiagton D.C., 1988. 

Caffeine. About 3% by weight of the roasted coffee bean is caffeine (16). The second U.S. Department of Agriculture world coffee crop estimate for 1988—1989 was 4.24 x 10 kg (93.3 million 100-lb bags) (102). World coffee consumption was predicted to rise in the foreseeable future at the rate of 1—2% per year and thus the total amount of caffeine and related alkaloids ingested from this source can also be expected to increase. Caffeine and related bases (eg, theophylline) are also found in various teas but, because most of the major producers (India, China, etc) export relatively Htfle of thek crops and keep most for domestic consumption, accurate figures on year-to-year production are more difficult to obtain. Nevertheless, these crops are of significant economic import (103). 

USDA, Foreign Agricultural Service Circular Series No. ECOE 3-88, Eoreign Agricultural Service, U.S. Department of Agriculture, 1988. 

J. Briggs, "A Safer Blast for the Modem Army," in Proceedings of the 14th Annual Explosives Safety Seminar, U.S. Department of Defense Explosive Safety Board, NTIS, Springfield, Va., 1972, p. 313. 

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