Contribution of electronic structure to the large thermoelectric power in layered cobalt oxides

With a strong help of high-resolution photoemission spectroscopy we demonstrate in this paper that the large thermoelectric power observed in the layered cobalt oxides, such as Ca_3Co_4O_9, Na_0.6CoO_2, and Bi_2Sr_2Co_2O_9, can be well accounted for with the Boltzmann-type metallic electrical conduction. An intense peak with 1.5–2 eV in width was observed in the photoemission spectra with its center at 1.0 eV below the Fermi level E_F in these compounds. The density of states at E_F is finite but negligibly small at room temperature, because E_F is located near the high-energy edge of this narrow band. We calculated thermoelectric power S using the Boltzmann transport equation with the electronic structure near E_F determined by the photoemission measurement. The calculated S shows fairly good consistency with the measured value both in its magnitude and the temperature dependence.journal articl

Clinical Features in Intrahepatic Cholestasis : Especially in Cases of Acute Types

Article信州医学雑誌 18(2): 388-397(1969)journal articl

Improved measurement of CP-violation parameters sin⁡2ϕ1 and |λ|, B meson lifetimes, and B0-B̅0 mixing parameter Δmd

journal articl

An Efficient ICT Method for Analysis of Co-planar Dipole Antenna Arrays of Arbitrary Lengths

A more judicious choice of trial functions to implement the Improved Circuit Theory (ICT) application to multi-element antennas is achieved. These new trial functions, based on Tai's modified variational implementation for single element antennas, leads to an ICT implementation applicable to much longer co-planar dipole arrays. The accuracy of the generalized impedance formulas is in good agreement with the method of moments. Moreover, all these generalized formulas including the radiation pattern expressions are all in closed-form. This leads to an ICT implementation which still requires much shorter CPU time and lesser computer storage compared to method of moments. Thus, for co-planar dipole arrays, the proposed implementation presents a relatively very efficient method and would therefore be found useful in applications such as CAD/CAE systems.application/pdfjournal articl

Study on combustion characteristics of biogas fuel using S.I. engine : making of S.I. engine experimental device and combustion experiments

Biogas, which is made from animal excreta and food waste, consists of 60% methane and 40% carbon dioxide. The biogas composition ratio is changed by fermentation condition. Combustibility of biogas was researched about relation between gas flow and flame shape using constant volume combustion chamber. But combustion characteristics of biogas/air mixture have not been researched in spark ignition engine. The purposes of this study are making of engine experimental system and comparing combustion characteristics of biogas with propane. First of all, the authors designed and made intake system for biogas supply, spark ignition system and combustion pressure measurement system. To comparing each combustion characteristics, combustion pressure was measured under same ignition timing condition. In these experiments, concentrations of methane in biogas were 70, 60 and 50%. From the result of pressure measurement, combustion period of propane mixture was the shortest in all conditions. For biogas mixtures, combustion period decreased with increase of methane concentration. Maximum combustion pressure increased with decrease of combustion period. As results, it was found as follows. To investigate combustion characteristics of biogas/air mixture, engine experimental system was designed and constructed. From combustion pressure measurement, there is high correlation between combustion period and methane concentration of biogas. However, to discuss about indicated work, indicated mean effective pressure, indicated thermal efficiency and specific fuel consumption of each conditions, these should be compared under MBT conditions.departmental bulletin pape

Statistics pertaining to HPRD growth, experimental types for protein–protein interactions and a breakdown of PTMs

<p><b>Copyright information:</b></p><p>Taken from "Human protein reference database—2006 update"</p><p>Nucleic Acids Research 2005;34(Database issue):D411-D414.</p><p>Published online 28 Dec 2005</p><p>PMCID:PMC1347503.</p><p>© The Author 2006. Published by Oxford University Press. All rights reserved</p> () Growth of HPRD over the last 3 years with respect to protein entries, protein–protein interactions and PTMs. () Distribution of protein–protein interactions in HPRD based on the type of the experimental method. () Distribution of various types of PTMs in HPRD. The percentage of the respective PTM is indicated only when it is greater than or equal to 2