The objective of this study was to identify the varying effects of altering the rumen fluid: substrate ratio on the outcomes of in vitro rumen fermentation. In vitro fermentation is a useful tool for evaluating the energy value of feedstuffs and the effect of feed additives on Volatile Fatty Acid...
Preconditioning is the comprehensive management practice first described and implemented in the 1960’s designed to reduce the incidence of bovine respiratory disease in the feedlot and stocker segments of the beef production system (3). Although this is the widely accepted design of preconditioning, there are many other layers and varieties...
This study identified new compounds with pest control activities. The two
sources of candidates that were followed here were the main heartwood extract of
Alaska Yellow Cedar (AYC) constituents and several semi-synthetic counterparts.
Five compounds were isolated and identified for the first time in AYC
heartwood in this research: two...
It was the goal of this research to determine if sago
starch could be used to replace wheat flour as an adhesive
extender of Urea-formaldehyde plywood adhesives through
either chemical modification of the starch or modification
of the adhesive formulation strategy. Guiding principles of
the research would be that a...
The essential oil of Alaska cedar heartwood is
known to contain compounds which contribute to the
remarkable durability of this species. While previous
research has identified several compounds, a complete
description of this oil, which has a "burnt-grape
fruit" odor, has not been undertaken. In this research
a profile of...
The objectives of this research were to isolate and
determine the molecular structures of certain polyphenols
in Douglas-fir and red alder barks. The compounds of
interest in Douglas-fir were the lignans which are
eventually incorporated into the outer bark phlobaphenes.
Phlobaphenes are the red colored, alcohol soluble, water
Equal molar amounts of (+)-catechin and N-Hydroxymethylacetamide
were reacted under acidic conditions. Thin-layer
chromatography (TLC) was used to monitor the reaction.
The reaction products were isolated by column chromatography
using Sephadex LH-20 and elution with 95 percent ethanol.
Three reaction products isolated included one
disubstituted and two monosubstituted compounds. The...
A resin was synthesized by reacting glucose with urea and
phenol under acidic conditions. To better understand the
structure of this polymer and the mechanism of its
formation, this study was undertaken. It was observed
that although the polymer backbone is comprised of a
carbohydrate, glucose is not incorporated in...