Polymetamorphism in the Hida Metamorphic Belt, Central Japan

On the western part of the Hida metamorphic belt, central Japan, there develop quartzo-feldspathic gneiss, basic gneiss and calcareous gneiss, associated with lesser amounts of pelitic gneiss. Various kinds of granite are distributed. Judged from the petrological and mineralogical characters of such meta-morphic minerals as pyroxene, amphibole, garnet, feldspar and mica, the metamorphic facies of the area is, in general, the amphibolite facies or lower. It must be noted, however, that there occur some interesting metamorphites with critical mineral associations suggesting the metamorphic facies of higher grade, probably the granulite facies. It is represented by such rocks as K feldspar-corundum gneiss (K feldspar-corundum-plagioclase-biotite-rutile), eclogitic rock (clinopyroxene-garnet-quartz) and two pyroxene gneiss (orthopyroxene-clinopyroxene-hornblende-garnet-K feldspar-plagioclase-quartz). The so-called "syenitic rock" of the Inishi type, which consists of wollastonite, clinopyroxene and plagioclase, would suggest the same metamorphic condition as that of the granulite facies rocks. Besides those critical mineral assemblages mentioned above, some minerals show the characteristics in chemical composition, which reflect the condition of higher grade metamorphism. Chemical characteristics of hornblende, garnet, plagioclase, scapolite, etc. suggest the granulite facies metamorphism in the area in question. Products of the granulite facies metamorphism are now preserved in the core parts of zoned crystals or zoned aggregates. Time and spatial relationship between the granulite facies metamorphism and the before-mentioned amphibolite facies metamorphism has been clarified in terms of polymetamorphism. In this concern, special attentions have been paid to the occurrence and mineralogy of a metamorphosed basic dyke, intruded obliquely into the surrounding gneisses. The role of granites in relation to the process of metamorphism has been summarized. Importance of the so-called "gray-granite" was especially emphasized. It is pointed out that the "gray-granite", at least a part of it, would have been formed by the process of partial melting under the condition of the granulite facies metamorphism. Meanwhile, the Funatsu granite, which had been regarded to be syntectonic and responsible for the granitization and migmatization on a large scale, has been clarified to be the post-kinematic one, playing a role of lubricunt against the blocks of metamorphites. Furthermore, uniqueness of the original rocks of the Hida metamorphites has been discussed, compared with those of the other high T — low P type metamorphic belts in Japan. Lastly, chronological analysis of the Hida Plateau revealed the presence of the older metamorphism of the granulite facies, the age of which goes back to about 500 m. y

On the Petrochemical Character of the Pelitic Gneiss from the Southwestern Part in the Hida Metamorphic Belt, Central Japan

In the Hida Metamorphic Belt, metapelites develop in a small amount, in contrast to wide development of basic and calcareous metamorphites. The metapelites in the district have been clarified to be higher in CaO, FeO and MgO contents while lower in Al-excess as compared to the usual metapelite. Judged from the petrochemical characteristics and the mode of occurrence, it is probable that the metapelites in question should not be derived from rocks of "miogeosynclinal" character of higher maturity, but from those intermingled with basic volcanic materials. Also have been discussed the similarity and the difference between the metapelites from other high T-low P type metamorphic belts in Japan along with the Precambrian metapelites from the Kamiaso conglomerate

<Original Report>A NEW METHOD FOR CYTOTOXICITY IN VITRO TEST OF CELLULAR IMMUNITY

この論文は国立情報学研究所の学術雑誌公開支援事業により電子化されました。A new quantitative in vitro test for the direct measurement of cytotoxicity on confluent and complete monolayer of SMT cells was designed with Micro Test Plate. The tumor used develops with high frequency in the DBA/2Ha-DD mouse, and is specific for this mouse since it grows in syngeneic host but not in DBA/2J or C57B1/6Ja mice. 1) With 10% serum supplement regardless of whether fetal calf serum or syngeneic mouse serum, more than 60% of the lymphocytes were viable at 48 hours culture after plating. 2) Number of blastic transformation of lymphocytes was increasing with the percentage of the fetal calf serum in 3×E medium. 3) The activity of immune lymphocytes against SMT monolayer was cell number-dependant which was intraperitoneally immunized. 4) The cytotoxicity of immune lymphocytes was greatest with cells from C57B1/6Ja mice, less marked with cells from DBA/2J mice and least with cells from DBA/2Ha-DD mice. Moreover, its cytotoxicity was greater against SMT monolayer than against MKC monolayer. 5) Therefore, it can be concluded that cellular immunity can be demonstrated between against allo-antigen and against tumor specific transplantation antigen of SMT. This method can, also, be consider to be a good one for cytotoxicity in vitro test of cellular immunity

Contact Metamorphic Effect on Basaltic Rocks by the Koyama Gabbro Complex, Susa Area, Southwest Japan

Tertiary basaltic rocks around the Koyama gabbro complex mass, which occurs in the northeastern part of Yamaguchi Prefecture, have undergone intense contact metamorphism by the mass. Radiometric age determinations indicate that the metamorphism is of Miocene age. The contact aureole is rather narrow (a maximum of about 700 m), the metamorphic grade rapidly increasing toward the mass. In the comparatively lower temperature part of the contact aureole, the metamorphic paragenesis is actinolitic hornblende ± hornblende + epidote+ biotite+ oligoclase + quartz. Meanwhile, the highest-grade rocks are represented by the stable association of orthopyroxene+ clinopyroxene ± hornblende + biotite+ labradorite + quartz. The metamorphic temperature close to the contact with the mass is estimated to be 800 to 860°C. In the most-intensely metamorphosed basalts, most of such phenocrystic minerals as clinopyroxene and plagioclase can still preserve the essential chemical characteristics in the original rocks, whereas phenocrystic orthopyroxene appears to have been chemically changed its composition during the metamorphism

Note on the Graphite-Free Corundum-K feldspar Gneiss in the Hida Metamorphic Belt, Central Japan

The association of corundum-K feldspar in a graphite-free rock is newly found in the western portion of the Hida Metamorphic Belt, central Japan. The equilibrium assemblage of the rock is corundum-K feldspar-plagioclase-biotite-apatite-zircon-ore with no graphite. Ore minerals are characterized by the abundance of rutile and by the absence of ilmenite and/or magnetite. Corundum and K feldspar had been in direct contact with each other before the formation of kelyphitic rims of muscovite aggregates around corundum crystals. The association of corundum-K feldspar in the graphite-free system must suggest the formation by the breakdown of muscovite under the condition when PH2O is not so low. Therefore, the breakdown must occur more or less near the maximum temperature expected. The metamorphic conditions have been estimated by the stable associations of zincian spinel-garnet-biotite-sillimanite-K feldspar-plagioclase and clinopyroxene-garnet in the metamorphites from the area to be around 700°C and 6 kb, which are not inconsistent with the condition deduced from the association now discussed

ジュウゾクセツ ノ カカリ ウケ コウゾウ ノ ケイシキカ

本研究では，日本語における従属節の係り受け構造について形式化する。より大きな節を作る規則に着目し，その規則をもとに，節の係り受け構造を，スロットとそれに含まれる接続表現という観点から記述することを試みる。その結果，必要となる15 のスロットと，それらに含まれる接続表現の記述を得た。ある接続表現を節末に持つ節は，それよりも前者のスロットに含まれる表現を節末に持つ従属節を受け，より後方のスロットに含まれる接続表現を節末に持つ節に係る。そして一つの節を構成することのない，共起制限が生じる接続表現を示し，それらについて考察したい。また，いくつかの接続表現に関しては，係り受け構造の観点から，二種類に分類する必要があるという提案を行った。 The aim of this study is to formalize the struture of subordinate clauses based on the rules of connectives. In this study, rules that were written in context-free grammar and bottom-up style are considered. Rules that specify the structure of two subordinate clauses stipulate that the preceding clause modeifies the following clause, and therefore connectives are assigned a number of slots as the first element of the rule must precede the second. This study established 15 slots, to each of which connectives can be assigned. Connectives occupying the same slot express a co-occurence restriction, because they do not coexist as part of one rule, and characteristics of connectives which appear in two different slots were also considered

Nano-artifact metrics based on random collapse of resist

Artifact metrics is an information security technology that uses the intrinsic characteristics of a physical object for authentication and clone resistance. Here, we demonstrate nano-artifact metrics based on silicon nanostructures formed via an array of resist pillars that randomly collapse when exposed to electron-beam lithography. The proposed technique uses conventional and scalable lithography processes, and because of the random collapse of resist, the resultant structure has extremely fine-scale morphology with a minimum dimension below 10 nm, which is less than the resolution of current lithography capabilities. By evaluating false match, false non-match and clone-resistance rates, we clarify that the nanostructured patterns based on resist collapse satisfy the requirements for high-performance security applications