2005-2006 Jon Nakamatsu (Piano)

Jon Nakamatsu Master Class (March 15, 2006) - Progra

On the relation between vector annotated logic programs and defeasible theories

In this paper, we propose an annotated logic program called a VALPSN (Vector Annotated Logic Program with Strong Negation) to deal with defeasible reasoning. We propose a translation from Billington’s defeasible theory into VALPSN and clarify the relation between them based on the translation

2004-2005 Piano Recital - Jon Nakamatsu

Jon Nakamatsu Master Class (April 1, 2005) - Progra

Synthesis, Characterization, Liquid Crystals and Crosslinking of Poly(gamma-Alkyl-Alpha,L-Glutamates).

As most polypeptides, poly($\gamma$-alkyl-$\alpha$,L-glutamates) exhibit the ability to exist in well defined chain conformations of extensive order such as the $\alpha$-helix. This helical conformation imparts a rod-like character to the polymer which is maintained in the melt and in certain solvents at particular concentrations. This dissertation reports the synthesis and characterization of poly($\gamma$-alkyl-$\alpha$,L-glutamates), in particular, of poly($\gamma$-stearyl-$\alpha$,L-glutamate) (PSLG), poly($\gamma$-benzyl-$\alpha$,L-glutamate) (PBLG), and poly($\gamma$-stearyl-$\alpha$,L-glutamate)-co-poly$(\gamma$-benzyl-$\alpha$,L-glutamate). Polymerization studies of PSLG with primary, tertiary, and silylated amines as initiators; and PBLG with coinitiators are described. The labeling of PSLG with a fluorescein dye is also explained. All the polymers were obtained from the corresponding N-carboxyanhydride monomers. Special focus was given to nearly monodispersed samples of PSLG. Polydisperse samples of PSLG were fractionated using a tetrahydrofuran-methanol system to obtain fractions with polydispersities of 1.1 to 1.7. The nearly monodispersed PSLG samples were characterized by \sp1H-NMR, gel permeation chromatography, static light scattering, and intrinsic viscosity studies. Formation of lyotropic liquid crystalline phases of the nearly monodispersed samples of PSLG in tetrahydrofuran were studied by optical microscopy. The isotropic and cholesteric liquid crystalline phases are detected using cross polarizers. The biphasic region is manifested by the presence of spherulites. The phase boundaries for PSLG of different molecular weights were determined. The reactivity of trimethylsilyl iodide with ester groups was used for the modification of the side chains of PBLG. The trimethylsilyl ester formed reacts with isocyanate groups under neutral conditions at room temperature to form amides. Formation of crosslinks between polymer chains using 1,6-diisocyanatohexane produces isotropic gels made of rigid rods. The gelation process can be followed by dynamic light scattering. The formation of anisotropic, highly ordered gels (crosslinking of the polymer in the liquid crystalline phase) is accomplished by applying an electric field while the gelation occurs

2019-2020 Philharmonia No. 2

The Conservatory 20th Anniversary Concert Series Concert Date & Time: October 26, 2019 at 7:30 PM & October 27, 2019 at 4:00 PM Program Piano Concerto No. 3 in D Minor, Op. 30 / Sergei Rachmaninoff Jon Nakamatsu, piano Symphonie Fantastique, Op. 14 / Hector Berliozhttps://spiral.lynn.edu/conservatory_philharmonia/1146/thumbnail.jp

Structural analyses of RuO(2)-TiO(2)/Ti and IrO(2)-RuO(2)-TiO(2)/Ti anodes used in industrial chlor-alkali membrane processes

The morphology and composition of RuO(2)-TiO(2)/Ti and IrO(2)-RuO(2)-TiO(2)/Ti anodes, which have been used for the production of chlorine for more than 10 years, were analyzed by various methods; such as high-resolution scanning electron microscopy, high-resolution Auger electron spectroscopy, electron probe X-ray emission microanalysis and X-ray diffraction analysis. Drastic changes in the surface morphology, including partial exfoliation of a small amount of the oxide layer and a reduction in the content of ruthenium species through dissolution, were observed for the RuO(2)-TiO(2)/Ti anode. For the IrO(2)-RuO(2)-TiO(2)/Ti anode, on the other hand, there were moderate changes in the surface morphology and moderate dissolution of iridium and ruthenium species.ArticleJOURNAL OF APPLIED ELECTROCHEMISTRYjournal articl

2004-2005 Master Class - Jon Nakamatsu (Piano)

Piano Recital - Jon Nakamatsu (March 31, 2005) - Programhttps://spiral.lynn.edu/conservatory_masterclasses/1148/thumbnail.jp

Enhancement of colony forming ability in the lung by transfer of the v-fos oncogene into a ras-transformed rat 3Y1 cell line

AbstractTransfer of the v-fos oncogene into a rat 3Y1 cell line transformed by v-H-ras, which is tumorigenic but non-metastatic, enhanced lung metastasis, depending on the amount of fos-related transcripts. Enhancement of the metastatic potential was associated with increases in tumor growth rate i.m. of inoculated cells but not the rate of in vitro cell growth, irrespective of the addition of tissue (e.g. lung) extract to the regular medium. These results suggest that the v-fos oncogene increased the malignancy by altering biological factors of the recipient cells responsible for cell growth and/or survival rate in vivo

Correlation Between Freezing Sites and Xylem Vessel Diameter for Three Chaparral Species of the Santa Monica Mountains

Coastal exposures of the Santa Monica Mountains rarely experience freezing temperatures (0 °C) because of the ameliorating effects of the Pacific Ocean and seawater’s specific heat capacity. In contrast, inland sites of the Santa Monica Mountains frequently experience winter temperatures below -10 °C. This temperature gradient, from coast to inland, may be a major determinate of species distribution patterns. To investigate possible mechanisms by which freezing impacts chaparral distribution patterns, we examined xylem vessel diameter and vessel length of three chaparral species growing at inland freezing sites versus coastal nonfreezing sites (Malosma laurina, Umbellularia californica, and Ceanothus megacarpus). It has been established that vessel size influences freezing-induced embolism and the blockage of xylem water transport from soil to leaves. However, it is not known if this “size effect” is primarily due to vessel diameter, vessel length, or both. We initially hypothesized that matched species-pairs at non-freezing sites would have both longer and wider vessels than at freezing sites. We determined maximum vessel length by injecting air into stems at decreasing segment lengths and mean vessel diameters by using an ocular micrometer in conjunction with a light microscope. Sample sizes were six for each species pairs. For all three species, mean vessel diameters were narrower at freezing than non-freezing sites (P \u3c 0.05) ranging between 13 µm mean differences for C. megacarpus to 20.4 µm mean differences for U. californica. In contrast, we found no significant difference in vessel lengths for any of the species-pairs (P \u3e 0.05). We conclude that reduction in vessel diameter is more significant than reduction in vessel length for protection from freezing-induced embolism of stem xylem. Furthermore, limits in the genetic plasticity of some species to reduce vessel diameter may preclude their survival at freezing sites