Many species have complex life cycles in which a dispersive larval stage is
followed by a relatively sedentary adult stage. For such species, reproductive output
is often high and large variation in survivorship throughout early life-history phases
(eggs and larvae) can lead to dramatic fluctuations in recruitment which may in...
Dynamic modeling of the atmospheric flight mechanics of a projectile equipped with an uncontrolled internal rotating disk is investigated and a modified projectile linear theory is established. It is shown through modeling of this type of projectile that several coefficients of the epicyclic dynamics are altered, leading to changes in...
The threespot damselfish, Stegastes planifrons,
maintains individual territories that are clustered on
coral patch reefs. My objective was to understand the
effects of territory clustering on behavior and fitness.
Fish with territories in the center of a cluster had
(relative to edge fish): higher mating success (number of
eggs), higher...
Eight foodborne pathogenic and spoilage Gram-positive bacteria were
evaluated for their spontaneous resistance frequencies to the peptide
antimicrobial nisin. In brain heart infusion (BHI) medium, nisin resistance
frequencies were in the range of l06 to l08 when exposed to nisin at
concentrations 2 to 4 times the minimal inhibitory concentrations....
Lysozyme is a natural antimicrobial agent that is effective against many
food spoilage and pathogenic microorganisms by disintegrating their cell walls.
Immobilization of lysozyme has attractive applications for use in the food
industry: (1) The enzyme could be readily separated from treated foods and
beverages and re-used while the foods...
The role of the yeast S-adenosylmethionine: Δ²⁴-sterol-C-methyltransferase
(SCMT) in sterol metabolism was investigated.
Structural analogs of S-adenosylhomocysteine were tested for
inhibition of the SCMT enzyme. A wide inhibitory range by these
compounds was observed, indicating which structural features of the
parent compound are important for binding to the enzyme. The...
Observed intensity fluctuations in the emission of Starkperturbed
Ly-α and Ly-β radiation from beam-foil formed atomic
hydrogen are compared with theoretical calculations to yield information
on the relative cross sections for creation of a hydrogen atom into
the various l -levels for n = 2 and n = 3. It...