MODIFICATION OF JACK PINE TMP LONG FIBERS BY ALKALINE PEROXIDE – PART 1. CHEMICAL CHARACTERISTICS OF FIBERS AND SPENT LIQUOR
The purpose of this work was to improve the quality of jack pine TMP long fibers, particularly with respect to the strength properties, by alkaline peroxide treatment. This paper reports the chemical characteristics of the treated long fibers and the spent liquors originating from various treatments. It was observed that, in comparison with hydrogen peroxide, the alkalinity of the treatment solutions had a greater influence on most fibre characteristics and spent liquor properties.
Revisiting the physical properties of thermomechanical pulp
This paper examines some of the published and unpublished fibre quality data of TMPs produced by various refining facilities.The pulp data seem to indicate that the current TMP technology could not fully exploit the potential that the raw material could offer. Some potential inherent limitations of refining are underscored and probable answers to them are provided.
Estimating Crop Growth Rate with Land Treatment
A new and more comprehensive procedure for estimating crop growth rate is illustrated with data from the literature for coastal bermudagrass. Yield data are described by the Gaussian probability function. The effect of irrigation and harvest frequency is shown. A plot of relative yield for each combination of irrigation and harvest frequency on probability paper shows that all the data follows a single line. By assuming and average composition, it is possible to estimate weekly nutrient uptake.