The reinvestigation of the titaniferous pyroxene from Shisaka-jima in the Ryoke metamorphic zone has revealed that the mineral was identified with titanian fassaite by its color and chemistry. The fassaite bearing dark crystalline aggregate of lenticular or nodular form in saccharodial limestone is composed of fassaite, spinel, magnetite, and ilmenite, as accessory phlogopite, amphibole, pyrrhotite, apatite, and titanite. It has equigranular granoblastic texture.
Two samples of the purplish brown fassaite were analyzed with EPMA. The result shows that the aluminium contents replacing silicon in tetrahedral site are 0.173 and 0.188 atomic percents on the basis of 0=6.000, and the mineral contains 9 mole percents of Ca-tschermackite. The green spinel, magnetite, and ilmenite were also analyzed with EPMA, and the conditions of formation have been disccused.
The occurrence suggests that the spinel-fassaite rock was derived from an aluminium rich sediment like laterite through the metamorphism of the amphibolite facies.

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花崗岩類が多く分類する瀬戸内海地方において老朽溜池の改修を行う場合, 花崗岩類の風化土であるマサ土を使用する必要が出てくる。現在, 築堤用土として粒度分布がよく透水係数の低いマサ土を大量に確保することは困難になってきている。そこで本報では, 粒度分布 (風化程度) の異なる6種類のマサ土にベントナイトを混合し, 透水性の改良を行い得るか否かの検討を行った。その結果, 粒度分布とベントナイト混合比とに関係が見られ, 対象とする試料の粒度分布を調べることで, 築堤用土としての透水係数の基準値を満足するベントナイト混合比の決定が可能であることが明らかとなった。

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風化程度の異なる締固め不飽和マサ土の水分変化に伴う剪断強度の変化を, 風化程度にかかわらず評価することを目的に, pF値を用いた評価を行った. 風化程度の判定は, 一次鉱物含有量, 酸化鉄含有量, 粒度分布によって求めた. 剪断強度の測定は, 水分状態を変化させた締固め試料を用い, 在来型一面剪断試験機によって求めた. その結果, 含水比の変化に伴う粘着力のピーク値および剪断抵抗角の変化点などは, 風化程度によって大きく異なった. これに対し, 圧力変換型pFセンサーにより求めた締固め不飽和状態のpF値を含水比に変えた指標として評価した場合には, 剪断強度の変化点は風化程度にかかわらずpF 2.5付近で一致することが明らかとなった.

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This study aims to estimate the role of the temporary investigation of house damage on a middle or small scale earthquake disaster. The rapid evaluation in post-disaster safety assessment was put into practice in Ehime prefecture on 2001 Geiyo Earthquake. As the first step we cleared the actual conditions of the damaged housings on the basis of the result of the rapid evaluation in post-disaster safety assessment. As the second step we conducted a questionnaire of the applicants of the rapid evaluation in post-disaster safety assessment. As the last step we compared the rapid evaluation in post-disaster safety assessment in Ehime prefecture on 2001 Geiyo Earthquake with them on the two other earthquake disasters. We found that many of the applicants were old men and women, and that they wanted to be without anxiety, and that they wanted to get some information about their house restoration.

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The reinvestigation of so-called titanian fassaite from Myojin island, Seto Inland Sea of Japan, has revealed that the minerals are titanian-esseneitic-diopside by chemistry. The diopsides with similar chemical compositions were found in Mutsuki island.
These diopsides occur as dark crystalline aggregates of nodule in saccharodial limestone. The dark fragments in this area are recrystallized skarns, which underwent Al-Ti-Fe concentration composed of titanian esseneitic diopside, potassic-magnesiosadanagaite, hercynite, ilmenite, and aluminian titanite, as accessory phlogopite, apatite, and perovskite. These minerals almost all are rich in Ca-Al-Ti-Fe.
The electron microprobe analysis shows that the diopsides in this area have high Al₂O₃, TiO₂ and Fe₂O₃ contents. Al ≥0.894, Ti ≥0.183, and Fe³⁺≥0.276 on the basis of O=6 and total cations=4. The diopsides have high molecule contents of esseneite, Ti-Tschermaks, and Ca-Tschermaks diopsides.
It is suggested that occurrence of the titanian esseneitic diopsides rock from Myojin and Mutsuki islands are from the sediment such as laterite or terra rossa, which is rich in the Al, Ti, and Fe, through the metamorphism with high temperature which is 600°C or more.

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ある特定地域の生活の質 (quality of life, QOL) を評価する場合には,当該地域のみならず隣接する地域のQOLを構成する指標をも考慮する必要があるとの基本的認識から,近接性を考慮したQOLを評価する方法を提案し,これを愛媛県70市町村に適用し,近接性を考慮した場合と考慮しない場合のQOLを求めた.その結果,近接性を考慮した場合のQOLのパターンは,考慮しない場合のそれとはかなり異なること,とくに松山市などの中心都市の周辺地域でのQOLの評価の向上が顕著であること,などが明らかとなった.周辺地域住民が短時間で容易に中心都市を訪問できることを考えると,この結果は,近接性を考慮しない場合に比較し,各地域のQOLをより的確に評価していると考えられ, QOLを評価する対象地域が相互に隣接している場合には,近接性を考慮する必要性があることが示唆された.

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