Elastic wave velocities of Apollo 12 rocks at high pressures

New results of P- and S-wave velocity measurements on two Apollo 12 rocks, 12052 and 12065, under pressures up to 10 kbars are presented. These rocks are basalt-like crystalline rocks with a bulk density of about 3.26 g/cm^3 and a mean atomic weight of 24.5. Like the Apollo 11 rocks, the velocities and the wave transmission efficiency are surprisingly low at low pressures despite their relatively tight texture; at pressures below 200 bars, Q is estimated to be less than 100. The velocities increase very rapidly with pressure and approach 7.0 km/sec (P wave) and 3.9 km/sec (S wave) towards 10 kbars. No evidence is found for an increase of Q at 1 MHz with a reduction of the ambient pressure to 3 x 10^(-3) torr

Process for the production of metal nitride sintered bodies and resultant silicon nitride and aluminum nitride sintered bodies

A process for the manufacture of metal nitride sintered bodies, in particular, a process in which a mixture of metal nitrite powders is shaped and heated together with a binding agent is described. Of the metal nitrides Si3N4 and AIN were used especially frequently because of their excellent properties at high temperatures. The goal is to produce a process for metal nitride sintered bodies with high strength, high corrosion resistance, thermal shock resistance, thermal shock resistance, and avoidance of previously known faults

IgG4-related sclerosing cholangitis should be included as an exclusion criterion for the diagnosis of primary sclerosing cholangitis

The definitive version is available at www.blackwell-synergy.com.ArticleAMERICAN JOURNAL OF GASTROENTEROLOGY. 102(3): 691-692 (2007)journal articl

Berry's phase in the multimode Peierls states

It is shown that Berry's phase associated with the adiabatic change of local variables in the Hamiltonian can be used to characterize the multimode Peierls state, which has been proposed as a new type of the ground state of the two-dimensional(2D) systems with the electron-lattice interaction.Comment: 2 pages, 2 figure

Prevalence and distribution of extrapancreatic lesions complicating autoimmune pancreatitis

The original publication is available at www.springerlink.com.ArticleJOURNAL OF GASTROENTEROLOGY. 41(12): 1197-1205 (2006)journal articl

Multi-Modes Phonon Softening in Two-Dimensional Electron-Lattice System

Phonon dispersion in a two-dimensional electron-lattice system described by a two-dimensional square-lattice version of Su-Schrieffer-Heeger's model and having the half-filled electronic band is studied theoretically at temperatures higher than the mean field critical temperature of the Peierls transition. When the temperature is lowered from the higher region down to the critical one, softening of multi phonon modes which have wave vectors equal to the nesting vector \vv{Q}=(\pi/a,\pi/a) with $a$ the lattice constant or parallel to \vv{Q} is observed. Although both of the transverse and longitudinal modes are softened at the critical temperature in the case of the wave vector equal to \vv{Q}, only the transverse modes are softened for other wave vectors parallel to \vv{Q}. This behavior is consistent with the Peierls distortions at lower temperatures.Comment: 10 pages, 5 Figure

Seronegative Sjogren syndrome with asymptomatic autoimmune sclerosing pancreatitis

The original publication is available at www.springerlink.com.ArticleCLINICAL RHEUMATOLOGY. 26(1): 117-119 (2007)journal articl

Association of Autoimmune Pancreatitis With Cytotoxic T-lymphocyte Antigen 4 Gene Polymorphisms in Japanese Patients

ArticleAMERICAN JOURNAL OF GASTROENTEROLOGY. 103(3):588-594 (2008)journal articl

High prevalence of hypothyroidism in patients with autoimmune pancreatitis

ArticleDIGESTIVE DISEASES AND SCIENCES. 50(6): 1052-1057 (2005)journal articl