The Effect of Dryer Fabric Tension on the Moisture Removal in Paper

The efficiency of the dryer sections is becoming increasingly important as energy prices soar. In an attempt to evaluate one of the possible variables which influence the efficiency of the dryer sections, this study of dryer fabric tension was made. Previous studies have shown that increased tension improves the heat transfer from the cylinder to the sheet by dissipating the insulating layer of air which separates the two. The tension necessary for this to occur was labeled the optimum tension. Tensions above the optimum gave no added benefits. To test this hypothesis, three sets of trials were made on the pilot plant machine at Western Michigan University. The first set was made by varying the tension of the dryer fabric in the first dryer section. The second was made by varying the tension in the second, and the third by varying the fabric tension in both of the sections. Percent moistures were calculated and used to compare the percent moistures removed at the different tension levels. It was shown that when then tension is increased from near zero up to the optimum, the percent of the incoming moisture removed increased by up to 6% for the pilot plant machine. The increases came nearly all from the first section while changes in the second dryer section showed very little effect. The study also showed that running at tensions above optimum decreases the percent moisture removed

Treatment of an Arizona gold ore

This thesis is a description of experiments preformed sic to determine the best scheme of treatment of a gold ore --page 1

Using geographic information system to address environmental justice concerns in transportation projects

Abstract only availableEnvironmental Justice concerns were brought up in the county of Cape Girardeau about impacts to the community. These impacts, caused by the construction of a new bridge (crossing the Mississippi River) and the associated relocation of Route 74 (to the bridge), need to be addressed by the Department of Transportation (since the law now states that the environmental justice concerns must be addressed for federally funded projects). This project was designed to demonstrate how to improve the transportation decisions that meet the needs of all people in the community (such as that of Cape Girardeau) by using GIS to facilitate the analyzing process for Environmental Justice in minority and low-income populations. Using data obtained from the Missouri Spatial Data Information Services and Cape Girardeau, Geographic Information Systems was used to create two different maps showing the per capita income and percent minority of that area in Cape Girardeau. This information showed that there were obvious environmental justice issues that needed to be examined

Unmanned Multiple Exploratory Probe System (MEPS) for Mars observation. Volume 2: Calculations and derivations

This volume of the final report on the unmanned Multiple Exploratory Probe System (MEPS) details all calculations, derivations, and computer programs that support the information presented in the first volume

Unmanned Multiple Exploratory Probe System (MEPS) for Mars observation. Volume 1: Trade analysis and design

This report presents the unmanned Multiple Exploratory Probe Systems (MEPS), a space vehicle designed to observe the planet Mars in preparation for manned missions. The options considered for each major element are presented as a trade analysis, and the final vehicle design is defined

Gene family encoding the major toxins of lethal \u3ci\u3eAmanita\u3c/i\u3e mushrooms

Amatoxins, the lethal constituents of poisonous mushrooms in the genus Amanita, are bicyclic octapeptides. Two genes in A. bisporigera, AMA1 and PHA1, directly encode α-amanitin, an amatoxin, and the related bicyclic heptapeptide phallacidin, a phallotoxin, indicating that these compounds are synthesized on ribosomes and not by nonribosomal peptide synthetases. α-Amanitin and phallacidin are synthesized as proproteins of 35 and 34 amino acids, respectively, from which they are predicted to be cleaved by a prolyl oligopeptidase. AMA1 and PHA1 are present in other toxic species of Amanita section Phalloidae but are absent from nontoxic species in other sections. The genomes of A. bisporigera and A. phalloides contain multiple sequences related to AMA1 and PHA1. The predicted protein products of this family of genes are characterized by a hypervariable ‘‘toxin’’ region capable of encoding a wide variety of peptides of 7–10 amino acids flanked by conserved sequences. Our results suggest that these fungi have a broad capacity to synthesize cyclic peptides on ribosomes

Inflation without Inflaton(s)

We propose a model for early universe cosmology without the need for fundamental scalar fields. Cosmic acceleration and phenomenologically viable reheating of the universe results from a series of energy transitions, where during each transition vacuum energy is converted to thermal radiation. We show that this `cascading universe' can lead to successful generation of adiabatic density fluctuations and an observable gravity wave spectrum in some cases, where in the simplest case it reproduces a spectrum similar to slow-roll models of inflation. We also find the model provides a reasonable reheating temperature after inflation ends. This type of model may also be relevant for addressing the smallness of the vacuum energy today.Comment: 13 pages, 4 figures, published versio

Degenerate dispersive equations arising in the study of magma dynamics

An outstanding problem in Earth science is understanding the method of transport of magma in the Earth's mantle. Models for this process, transport in a viscously deformable porous media, give rise to scalar degenerate, dispersive, nonlinear wave equations. We establish a general local well-posedness for a physical class of data (roughly $H^1$) via fixed point methods. The strategy requires positive lower bounds on the solution. This is extended to global existence for a subset of possible nonlinearities by making use of certain conservation laws associated with the equations. Furthermore, we construct a Lyapunov energy functional, which is locally convex about the uniform state, and prove (global in time) nonlinear dynamic stability of the uniform state for any choice of nonlinearity. We compare the dynamics to that of other problems and discuss open questions concerning a larger range of nonlinearities, for which we conjecture global existence.Comment: 27 Pages, 7 figures are not present in this version. See http://www.columbia.edu/~grs2103/ for a PDF with figures. Submitted to Nonlinearit