David M. Barber

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Smaller chromosomes have higher rates of meiotic reciprocal recombination (centimorgans per kilobase pair) than larger chromosomes. This report demonstrates that decreasing the size of Saccharomyces cerevisiae chromosomal DNA molecules increases rates of meiotic recombination and increasing chromosome size decreases recombination rates. These results(More)
The proposed International Linear Collider (ILC) is well-suited for discovering physics beyond the Standard Model and for precisely unraveling the structure of the underlying physics. The physics return can be maximized by the use of polarized beams. This report shows the paramount role of polarized beams and summarizes the benefits obtained from polarizing(More)
The highly enantioselective preparation of trisubstituted pyrrolidine derivatives employing a one-pot nitro-Mannich/hydroamination cascade is reported. This cascade approach utilizes an asymmetric bifunctional organo-catalytic nitro-Mannich reaction followed by a gold-catalyzed allene hydroamination reaction. The products are afforded in good yields and(More)
Germination-arrest factor (GAF): 2. Physical and chemical properties of a novel, naturally-occurring herbicide produced by Pseudomonas fluorescens strain WH6. Biological Control 50: 103-110. that the herbicidal activity of GAF is associated with a ninhydrin-reactive compound and counteracted by selected amino acids. a C2-C9 alkane-oxidizing bacterium(More)
Movement of Atlantic bluefin tuna (Thunnus thynnus) as determined by satellite tagging experiments initiated off New England. Validation of geolocation estimates based on light level and sea surface temperature from electronic tags. In situ cardiac performance of Pacific bluefin tuna hearts in response to acute temperature change. A review of the growth(More)
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