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Rafael Sarmiento

United States Department of Agriculture

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Featured researches published by Rafael Sarmiento.

Science | 1973

Insect Juvenile Hormones: Highly Potent Synthetic Mimics

Rafael Sarmiento; T. P. McGovern; Morton Beroza; G. D. Mills; R. E. Redfern

The substitution of a 7-alkoxy group for the 6,7-epoxy moiety in aryl terpenoid ethers having high juvenile hormone activity has produced several compounds exceptionally active against Tenebrio molitor. The most potent compound [7-ethoxy-1-(p-ethylphenoxy)-3,7-dimethyl-2-octene, called JH-25] is active at the level of 10 picograms per insect, or about 100 times more active than other promising juvenile hormone mimics so far reported. Compound JH-25 was also active against Tribolium confusum.

Analytical Chemistry | 1963

Determination of the Carbon Skeleton and Other Structural Features of Organic Compounds by Gas Chromatography.

Morton Beroza; Rafael Sarmiento

Analytical Chemistry | 1966

Apparatus for Reaction Gas Chromatography. Instantaneous Hydrogenation of Unsaturated Esters, Alcohols, Ethers, Ketones, and Other Compound Types, and Determination of Their Separation Factors.

Morton Beroza; Rafael Sarmiento

Analytical Chemistry | 1964

Carbon Skeleton Chromatography Using Hot-Wire Thermal-Conductivity Detection.

Morton Beroza; Rafael Sarmiento

Analytical Chemistry | 1965

New catalyst and technique for analysing fatty acids, their esters, and long-chain compounds by carbon-skeleton chromatography.

Morton. Beroxa; Rafael Sarmiento

Journal of Economic Entomology | 1972

Activity of Compounds Related to Disparlure, the Sex Attractant of the Gypsy Moth

Rafael Sarmiento; Morton Beroza; Barbar A. Bierl; J. G. R. Tardif

Journal of Economic Entomology | 1971

Juvenile Hormone Activity of Mixed Ethers Containing a Phenyl and a Terpenoid Moiety Applied Topically to the Large Milkweed Bug and the Yellow Mealworm124

R. E. Redfern; T. P. McGovern; Rafael Sarmiento; Morton Beroza

Journal of Economic Entomology | 1973

Effects of Synthetic Juvenile Hormone Analogues on Certain Injurious and Beneficial Arthropods Associated with Cotton

D. L. Bull; R. L. Ridgway; W. E. Buxkemper; Meyer Schwarz; T. P. McGovern; Rafael Sarmiento

Journal of Economic Entomology | 1974

N,N-Substituted n-Alkanesulfonamides as Repellents for the Yellowfever Mosquito and the German Cockroach

T. P. McGovern; H. K. Gouck; G. S. Burden; Rafael Sarmiento; Morton Beroza; Claude H. Schmidt

Archive | 1975

METHOD FOR DISRUPTING NORMAL INSECT MATURATION

Morton Beroza; Rafael Sarmiento; T. P. McGovern

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Morton Beroza

United States Department of Agriculture

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T. P. McGovern

United States Department of Agriculture

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R. E. Redfern

United States Department of Agriculture

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Barbar A. Bierl

United States Department of Agriculture

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Claude H. Schmidt

United States Department of Agriculture

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D. L. Bull

United States Department of Agriculture

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G. D. Mills

United States Department of Agriculture

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G. S. Burden

United States Department of Agriculture

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H. K. Gouck

United States Department of Agriculture

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J. G. R. Tardif

United States Department of Agriculture

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