This study compared seven growth models using body weight measurements from 300 progeny obtained from unselected random bred parents. The study which lasted for 20 weeks was carried out at the University of Maiduguri Livestock Teaching and Research farm. R 2 values for the Asymptote regression, Exponential, Gompertz, Logistic, Monomolecular, Richards and Weibull models were 0.994, 0.935, 0.997,...

The present study aimed to estimate digestible protein (DP) requirements for maintenance and growth assess the efficiency of utilization in pacu (Piaractus mesopotamicus) juveniles. A complete randomized design consisted seven treatments, five replicates (tanks) per treatment was used. After a one-week acclimation period, 350 juveniles 27.48 ± 1.8 g (initial average body weight - BW) were equal...

In the examination of disinfectants, the rate of killing of bacteria is implicitly contained in the result, even when that result is expressed in any such standard form as the phenol coefficient. This fact is not apparent and is not generally recognized. Let it be recalled, however, that the time to kill is the basic determination upon which the coefficient, or any other relative measure of eff...

One major unresolved problem in olfaction research is to relate the percept to the molecular structure of stimuli. The present study examined this issue and showed for the first time a quantitative structure-odor relationship in which the more structurally complex a monomolecular odorant, the more numerous the olfactory notes it evokes. Low-complexity odorants were also rated as more aversive, ...

Molecular genetics has revealed a precise stereotypy in the projection of primary olfactory sensory neurons onto secondary neurons. A major challenge is to understand how this mapping translates into odor responses in these second-order neurons. We investigated this question in Drosophila using whole-cell recordings in vivo. We observe that monomolecular odors generally elicit responses in larg...

The specific surface area of a powder is determined by physical adsorption of a gas on the surface of the solid and by calculating the amount of adsorbate gas corresponding to a monomolecular layer on the surface. Physical adsorption results from relatively weak forces (van der Waals forces) between the adsorbate gas molecules and the adsorbent surface of the test powder. The determination is u...

Brewster angle microscopy N·dodecyl·y·hydroxybutyric acid amide synchrotron X·ray grazing incidence diffraction 4'·oclyl-1,1 '-biphenyl-4·carbonilride Brewster angle microscopy has been involved in some of tho recent advances in tho field of monomolecular layers, such as the detection of a phase transition in monolayars formed by a surfactant at the solution surface, the determination of the li...

We discuss 2D and binary self-assemblies of protein molecules using apo-ferritin and holo-ferritin, which have identical outer-shell structures but different inner structures. The assemblies do not show any phase separation but form 2D monomolecular-layer crystals. Statistical analyses showed a random molecular distribution in the crystal where the molar ratio was conserved as it was in the sol...