Improvement of Heat Stability of Paper Made From Sulfite and Kraft Pulps

Paper made from bleached sulphite and sulphate pulps and then treated with sodium alginate and antimony resin solutions show far less physical and chemical degradation with heat than these same papers when not treated with these solutions. Sodium alginate and antimony resins solutions appear to inhibit degradation up to 175C for 45 minutes but are not effective when the papers are heated to 210 C for 45 minutes. The paper made with bleached sulphate pulp and saturated with sodium alginate solution showed an appreciable increase in folding strength when heated at 175C for 45 minutes, which is most unusual. The presence of iron which might come from process water appears to negate the effect of alginate and antimony solutions and should be held to a minimum when making paper meant for unusual heat resistance. Aquapel-kymene 557 sizing solution either inhibits chemical degradation as measured by the copper number test or else interferes with the test by blocking the reducing groups which are generally regarded as products of degredation. Upon heating the Aquapel-kymene 557 complex must break down and aid in degradation of the sample as shown by the copper number. The permanence of paper might be enhanced if treated by the methods prescribed in this report. The utility of papers used for winding electric wires, for paper plates and for use on Virkotype presses might be improved with these treatments

Glue in the light-front pion

It may be possible to approximate the full pion wave function in light-front QCD using only q \qbar and q \qbar g Fock space components. Removing zero modes and using invariant-mass cutoffs that make a constituent approximation possible leads to non-canonical terms in the QCD hamiltonian, and forces us to work in the broken symmetry phase of QCD in which chiral symmetry breaking operators must appear directly in the hamiltonian because the vacuum is trivial. Assuming any candidate interactions are local in the transverse direction, I argue that they are probably relevant operators so that perturbation theory is not modified at high energies. Since light-front chiral symmetry corresponds to quark helicity conservation, we can readily identify candidate chiral symmetry breaking interactions. The only candidate relevant operator is the quark-gluon emission/absorption operator with a quark spin flip. I argue that this operator can only produce the physical $\pi-\rho$ mass splitting if the q \qbar g component of the pion is significant.Comment: LATEX, 6 pages. To appear in Proceedings of HD 2000, From Hadrons to String

[Review of] Michael Eric Dyson. I May Not Get There With You: The True Martin Luther King Jr.

Michael Eric Dyson\u27s approach to his biography of Dr. Martin Luther King entitled I May Not Get There With You : The True martin Luther King Jr. is unlike the numerous other biographies of King in that the method he employs in recasting the life of Dr. King is described as Bio-criticism

Crossroads to the 21 st Century: The Evolution of Ethnic Studies at Bowling Green University

At Bowling Green State University\u27s Fourth Annual Ethnic Studies Conference, scholar Dr. James A. Banks observed that Bowling Green State University is soon to become the only institution of higher education in the United States to institute a university-wide requirement in cultural diversity. The implementation of this landmark requirement demonstrates the depth and vigor of the commitment to excellence and equity in education held by the University\u27s Department of Ethnic Studies