第5章 貿易データにおける国際IO76 部門分類への変換

本章の目的は商品分類がHS の2007 年度改訂版（HS2007）を基礎とする年別あるいは月別の貿易データを国際産業連関表の76 部門分類（io76）および同26 部門分類（io26）へ変換するための方法を示し、この方法にしたがって変換した貿易データが正しく変換されているかどうかを確認することである。HS2007 とio76 の対応関係コード表が存在していればそれを利用することで貿易データの両者の変換は可能となるが、その対応関係コード表は存在しない。そのためにHS2007 とio76 の対応関係コード表を作成することが必要である。この対応関係コード表の作成は既存の対応関係コード表を連結することにより分類間の対応を作成することにより行う。

Aiming at improving access to research output through the institutional repository

The paper is to introduce the institutional repository (IR) as a powerful tool to support the researchers of the institution to archive and disseminate their research findings freely to the scholarly community on the Internet. The IR can improve the access to an institution’s research output enormously. The operations of an IR also require various interactions with researchers, which enables the library to gain a solid understanding of research needs and expectations. Through such interaction, the relationship and mutual trust between researchers and the library are strengthened. The experiences of the Institute of Developing Economies (IDE) library can be useful to other special libraries.

Recrystallization of amorphous nano-tracks and uniform layers generated by swift-ion-beam irradiation in lithium niobate.

The thermal annealing of amorphous tracks of nanometer-size diameter generated in lithium niobate (LiNbO3) by Bromine ions at 45 MeV, i.e., in the electronic stopping regime, has been investigated by RBS/C spectrometry in the temperature range from 250°C to 350°C. Relatively low fluences have been used (<1012 cm−2) to produce isolated tracks. However, the possible effect of track overlapping has been investigated by varying the fluence between 3×1011 cm−2 and 1012 cm−2. The annealing process follows a two-step kinetics. In a first stage (I) the track radius decreases linearly with the annealing time. It obeys an Arrhenius-type dependence on annealing temperature with activation energy around 1.5 eV. The second stage (II) operates after the track radius has decreased down to around 2.5 nm and shows a much lower radial velocity. The data for stage I appear consistent with a solid-phase epitaxial process that yields a constant recrystallization rate at the amorphous-crystalline boundary. HRTEM has been used to monitor the existence and the size of the annealed isolated tracks in the second stage. On the other hand, the thermal annealing of homogeneous (buried) amorphous layers has been investigated within the same temperature range, on samples irradiated with Fluorine at 20 MeV and fluences of ∼1014 cm−2. Optical techniques are very suitable for this case and have been used to monitor the recrystallization of the layers. The annealing process induces a displacement of the crystalline-amorphous boundary that is also linear with annealing time, and the recrystallization rates are consistent with those measured for tracks. The comparison of these data with those previously obtained for the heavily damaged (amorphous) layers produced by elastic nuclear collisions is summarily discussed.

Comparison on the durability of different portland cements after five years exposure to sulfate and to sea water attack

Experimental research has been performed to relate specific cement characteristics to deterioration due to sulfate and sea water attack after five year exposure, and to study different test method suitability for sulfate and marine resistance. Sulfate resistance testing have been performed on mortar specimens made with fifteen cement types of statistically diverse chemical composition according to European standard EN 197-1, most of them with sulfate resistant properties according to Spanish regulations. Chemical and mechanical characteristics were studied to determine the variation in properties of selected cements. SO3 content, type and amount of additions, C3A, and C4AF content were used to examine relationships between these characteristics and the results of sulfate resistance. Mortar specimens testing using Na2SO4 as the aggressive medium according to ASTM 1012 (with w/c ratio adapted to prENV 196-X:1995) was performed using each type of cement; identical specimens were also stored in sea water, and in lime saturated water (blank condition), up to five year age. Additionally these cements were tested conforming ASTM 452 and Koch and Steinegger test. Recommended acceptance limits for sulfate resistance of cements concerning to each used test method were evaluated in order to explore their suitability. Relationships between cement characteristics, degradation, expansive products obtained by X-ray diffraction techniques and maximum expansion after applied storage treatments, were correlated at final age, to redefine cement characteristics for sulfate resistant and marine resistant Portland cement

Relativistic high-current electron-beam stopping-power characterization in solids and plasmas: collisional versus resistive effects.

We present experimental and numerical results on intense-laser-pulse-produced fast electron beams transport through aluminum samples, either solid or compressed and heated by laser-induced planar shock propagation. Thanks to absolute K� yield measurements and its very good agreement with results from numerical simulations, we quantify the collisional and resistive fast electron stopping powers: for electron current densities of � 8 � 1010 A=cm2 they reach 1:5 keV=�m and 0:8 keV=�m, respectively. For higher current densities up to 1012 A=cm2, numerical simulations show resistive and collisional energy losses at comparable levels. Analytical estimations predict the resistive stopping power will be kept on the level of 1 keV=�m for electron current densities of 1014 A=cm2, representative of the full-scale conditions in the fast ignition of inertially confined fusion targets.

Tomus secundus / D. Thomae Aquinatis ... ; complectens expositionem in octo libros De physico auditu, in quatuor libros De c[a]elo & mundo et in libros De generatione, et corruptione Aristotelis ; qui autem sint integrè expositi, qui vero mortis culpa, imperfecti relicti, propriis manifestum est locis

Imp. tomados de los colofones

Tomus secundus / D. Thomae Aquinatis ... ; complectens expositionem in octo libros De physico auditu, in quatuor libros De c[a]elo & mundo et in libros De generatione, et corruptione Aristotelis ; qui autem sint integrè expositi, qui vero mortis culpa, imperfecti relicti, propriis manifestum est locis

Imp. tomados de los colofones

Tomus quintus / D. Thomae Aquinatis ... ; complectens expositionem in decem libros Ethicorum et in octo libros Politicorum Aristotelis ; quibus adiecta est eorumdem Politicorum antiqua interpretatio, per sectiones propriis restituta locis, quam D. Thomas olim exponendo sequutus est

Imp. tomados de los colofones

Tomus quintus / D. Thomae Aquinatis ... ; complectens expositionem in decem libros Ethicorum et in octo libros Politicorum Aristotelis ; quibus adiecta est eorumdem Politicorum antiqua interpretatio, per sectiones propriis restituta locis, quam D. Thomas olim exponendo sequutus est

Imp. tomados de los colofones

El árido calizo como árido para hormigones autocompactantes (HAC)

Siempre que se pretende investigar en el mundo del hormigón no se utiliza el árido calizo para realizar los ensayos, se utilizan áridos silícicos como patrón, y los resultados obtenidos se extrapola a los áridos calizos. Esto se ha demostrado no correcto ya que no es extrapolable los resultados en muchos casos, y este artículo es un ejemplo, y normalmente el comportamiento del árido calizo es más favorable. Los ensayos realizados con árido grueso, árido fino y finos calizos han demostrado unos óptimos resultados para hormigones autocompactantes (HAC). Los finos calizos obtienen un óptimo resultado en la plasticidad y estabilidad del hormigón, con la ayuda del aditivo de policarboxilato y el modulador de viscosidad, se consiguen todas las clases de hormigones autocompactantes para rampas, para muros y hasta para suelos (forjados-soleras), los áridos gruesos obtienen una óptima adherencia con el cemento y los áridos finos rellenan los huecos que no han ocupado los finos. Consiguiéndose resistencias mecánicas hasta los 65 MPa a los 28 días y manteniendo las características de los hormigones autocompactantes. Por tanto se concluye que el árido calizo es un excelente árido para la obtención de hormigones autocompactantes, pero es necesaria una cuidada distribución granulométrica, una adecuada dosificación y un enérgico amasado para conseguir la homogeneidad del hormigón.