Jessica A Martin

Learn More
Bactenecin is an antimicrobial peptide isolated from bovine neutrophils. Bactenecin was synthesized by solid-phase peptide synthesis and renatured to a fully disulfide bonded form. The peptide inhibits the growth of Escherichia coli and Staphylococcus aureus at the same concentration reported for the peptide purified from bovine neutrophils. Bactenecin(More)
We tagged individuals of the sea urchin Diadema antillarum (Philippi) around the island of Gran Canaria (The Canary Islands) during winter 2001–2002 using a new technique, consisting of the insertion of a hook fastened to a fishing line into the aboral pole (periproctal membrane). This allowed individual identification of tagged sea urchins. The goals were:(More)
[reaction: see text] A sequential acylation-intramolecular cyclopropanation reaction takes place upon treatment of a series of tetraalkylammonium acylchromates with beta,gamma-unsaturated acyl chlorides at -10 degrees C. The reaction leads to 2-oxabicyclo[3.1.0]hexan-3-ones with exo selectivity in good yields. The diastereoselectivity of the reaction allows(More)
Electrospray ionization was used to produce distributions of gas-phase cluster ions from solutions of sodium and potassium tetrafluoroborate. The majority of the cluster species followed the trend (MBF(4))(n)M(+), where M=Na and K. The values of n, for both salts, ranged from 1-15. Collision induced dissociation (MS/MS and MS(n)) in an ion trap mass(More)
Auditory perceptual tasks involving the discrimination of fine differences in frequency, duration, or rhythmic pattern were given to a group of sixth form schoolboys. The results indicate that there is a wide range of auditory skills for different individuals, even within a relatively homogeneous group. There are also differences in a person's ability to(More)
A study was made of the pronunciation of stop consonants in CVC words by three groups of preschool children. The two groups of normal children had insignificant problems, but the speech-disordered group had a wide range of errors. Errors in initial position differed from errors in final position. Voicing errors occurred most frequently in initial position,(More)
Intramolecular hydrogen bonding in a series of 1’-sucrose derivatives having different numbers of hydroxyl groups has been investigated in Me2SO-d6 solution by SIMPLE ‘H NMR measurements, Le., Secondary Isotope Multiplet NMR Spectroscopy of Partially Labeled Entities. Isotope effects, transmitted through intramolecular hydrogen bonds, are observed for the(More)