Structural and Petrological Studies on the Ryôké Gneiss and Granodiorite Complex of the Yanai District, Southwest Japan.

The Yanai district for the most part consists of the Ryôké metamorphics and granodioritic complexes which are distributed sporadically in the southern margin of the inner zone of Southwest Japan. The metamorphic rocks of the district comprise mostly siliceous banded gneisses, small amounts of semi-pelitic and pelitic rocks, amphibolites and crystalline limestones. The granodioritic rocks are grouped into two generations, i.e., the older and the younger complexes. The former includes autochthonous and parautochthonous granodiorites of Obataké, Gokenya, Gamano and Okiura, and the latter intrusive gran-odiorites and granites of Tōwa, Kibé, Murotsu, etc. It is assumed in field relation and petrography that the banded gneisses have suffered granitization and migmatization and changed gradually into gneissic granodiorites. Structural features of the banded gneisses and associated granodioritic rocks are presented here in detail. In particular, such features as foliation and lineation in these rocks were measured and their geometry was treated statistically. The folding of banded gneisses is uniform throughout the area, and fold axis B coincides with b-lineation. The axial planes of folds are generally parallel to each other and considered to coincides with shear plane. The older granodiorites generally exhibit distinct foliation and lineation. It is note-worthy that the trend of older granodiorites is conformable and harmonic with, and locally subconcordant to those of the banded gneisses. The younger granodiorites discordantly cut the structures of the banded gneisses and the older granodiorites. Petrofabric analyses were made for 22 selected samples, as an important aid to the interpretation of geo-logical structure and geological history of the report area. The results of the petrofabric analysis coincided with the structural megascopic observation. Quartz fabrics of the banded gneisses proper do not show any characteristic patterns or high concentration. As the granitization of the banded gneisses advances, the quartz fabrics exhibit rather higher concentration and roughly monoclinic symmetry. The fabric diagrams of the gneissic granodiorites also show high concentration and symmetry as well as those of the granitized banded gneisess. Mica fabrics are due to the bedding schistosity and show ac-girdles. Biotite orientation seems to be related to the known s-plane which represents usually shear plane. Biotite orientation of the banded gneisses tends to disperse the concentration as the granitization progresses, and the bio-tite orientation of the gneissic granodiorites presents a more dispersed girdle, presumably due to increasing mobility of the rocks during the migmatization process

On the Kitaôshima Granite Gneiss Complex

In the Yanai-Yashirojima (Oshima) district, Yamaguchi Pref., in the Ryôke metamorphic belt, a composite mass consisting of granite gneiss (orthogneiss) and basic gneiss occurs surrounded by the layered syntectic granodiorite. Various features, especially such as agmatitic behaviour in granitization, the presence of metamorphic dyke and granitized "fault", strongly suggest that the granite gneiss complex had been brought up to the tectonic level of brittle fracturing in the state of gneiss before the metamorphism and granitization of the Ryôke age began. It is suggested that the Kitaôshima granite gneiss complex would represent a fragment of the basement under the Upper Palaeozoic geosyncline in the innerside of Southwest Japan. Furthermore, the possibility of pre-Permian land between the innerside and the outerside of South-west Japan is suggested

Structure of the Granite Mass of the Kurokami Island, Tokuyama City, Yamaguchi Prefecture

The Kurokami Island in the Tokuyama Bay is composed of Cretaceous granite, which forms a composite body extensively exposed in the Sanyo region. The Kurokami granite is homogeneous and slightly porphyritic. In order to elucidate tectonic problems of the granite, a statistical survey of the joints was undertaken. Many joints, developed within the granite mass, have been measured at several stations, and the data have been plotted on the equal-area net. Geometrically, two types of joint can be recognized in the granite from the whole area diagram. The one type is the horizontal joint with low angle dip. The horizontal joint is considered to have been originated in the granite batholith, consolidated deep within the earth's crust, then release of pressure by removal of thick cover of rocks caused the rock to swell upwards into a dome structure with joints parallel to the surface. The other type is the vertical joints, showing girdle with some maxima in the diagram. The origin of the vertical joints is not certain. A few of them, however, show some correlation with aplites in the granite. Latent joints, which is important in quarrying favorably building stones, are developed. The trend of latent joints is generally parallel to the exfoliation surface.今村外治教授退官記念特集

Radiometric Model and Inter-Comparison Results of the SGLI-VNR On-Board Calibration

The Second Generation Global Imager (SGLI) on Global Change Observation Mission Climate (GCOM-C) satellite empowers surface and atmospheric measurements related to the carbon cycle and radiation budget, with two radiometers of Visible and Near Infrared Radiometer (SGLI-VNR) and Infrared Scanning Radiometer (SGLI-IRS) that perform a wide-band (380 nm12 m) optical observation not only with as wide as a 11501400 km field of view (FOV), but also with as high as 0.250.5 km resolution. Additionally, polarization and along-track slant view observations are quite characteristic of SGLI. It is important to calibrate radiometers to provide the sensor data records for more than 28 standard products and 23 research products including clouds, aerosols, ocean color, vegetation, snow and ice, and other applications. In this paper, the radiometric model and the first results of on-board calibrations on the SGLI-VNR, which include weekly solar and light-emitting diode (LED) calibration and monthly lunar calibration, will be described. Each calibration data was obtained with corrections, where beta angle correction and avoidance of reflection from multilayer insulation (MLI) were applied for solar calibration; LED temperature correction was performed for LED calibration; and the GIRO (GSICS (Global Space-based Inter-Calibration System) Implementation of the ROLO (RObotic Lunar Observatory) model) model was used for lunar calibration. Results show that the inter-comparison of the relative degradation amount between these three calibrations agreed to within 1% or less

Differentiation of Apical Bud Cells in a Newly Developed Apical Bud Transplantation Model Using GFP Transgenic Mice as Donor.

Rodent mandibular incisors have a unique anatomical structure that allows teeth to grow throughout the lifetime of the rodent. This report presents a novel transplantation technique for studying the apical bud differentiation of rodent mandibular incisors. Incisal apical end tissue with green fluorescent protein from transgenic mouse was transplanted to wild type mice, and the development of the transplanted cells were immunohistologically observed for 12 weeks after the transplantation. Results indicate that the green fluorescent apical end tissue replaced the original tissue, and cells from the apical bud differentiated and extended toward the incisal edge direction. The immunostaining with podoplanin also showed that the characteristics of the green fluorescent tissue were identical to those of the original. The green fluorescent cells were only found in the labial side of the incisor up to 4 weeks. After 12 weeks, however, they were also found in the lingual side. Here the green fluorescent cementocyte-like cells were only present in the cementum close to the dentin surface. This study suggests that some of the cells that form the cellular cementum come from the apical tissue including the apical bud in rodent incisors.福岡歯科大学2015年

OCT で検出された冠動脈のlipid-richプラークに対する至適薬物療法施行後の臨床経過

Background: The aim of this study was to evaluate optical coherence tomography (OCT)-detected lipid-rich coronary plaques (LRCPs) with coronary computed tomography angiography (CCTA) 10 months after optimal medical therapy (OMT). Methods and Results: Baseline OCT detected 28 LRCPs in non-culprit lesions. High-risk plaque features (HRPFs), such as positive remodeling, very low attenuation plaques, napkin-ring sign, and spotty calcification, were observed in 67.9%, 67.9%, 21.4%, and 64.3% of LRCPs, respectively, at the 10-month follow-up CCTA. Lesions with ≥3 HRPFs were defined as high-risk LRCPs (n=12); the remaining were defined as low-risk LRCPs (n=16). The maximum lipid arc on baseline OCT was larger in high- than low-risk LRCPs (221±62° vs. 179±44°, respectively; P=0.04). Receiver operating characteristic curve analysis indicated that a maximum lipid arc >154° on baseline OCT was the optimal cut-off value to predict high-risk LRCPs 10 months after OMT. Patients with high-risk LRCPs had worse clinical outcomes, defined as a composite of cardiac death, target lesion-related myocardial infarction, and target lesion-related revascularization, during follow-up than those with low-risk LRCPs (33.3% vs. 0%; P=0.01). Conclusions: A high-risk LRCP at follow-up CCTA was correlated with a larger maximum lipid arc on baseline OCT. Further aggressive treatment for patients with large LRCPs may reduce vulnerable plaque features and prevent future cardiac events.博士（医学）・甲第869号・令和5年3月15

経皮的冠動脈インターベンションにおけるステント血栓症発症に特徴的なステント留置後の光干渉断層法の冠動脈内の所見

Background:The association between unfavorable post-stent optical coherence tomography (OCT) findings and subsequent stent thrombosis (ST) remains unclear. This study investigated the ST-related characteristics of post-stent OCT findings at index percutaneous coronary intervention (PCI). Methods and Results:Fifteen patients with ST onset after OCT-guided PCI (ST group) were retrospectively enrolled. Post-stent OCT findings in the ST group were compared with those in 70 consecutive patients (reference group) without acute coronary syndrome onset for at least 5 years after OCT-guided PCI. The incidence of acute myocardial infarction (AMI) was higher in the ST than reference group (60.0% vs. 17.1%, respectively; P=0.0005). The incidence of incomplete stent apposition (93.3% vs. 55.7%; P=0.0064), irregular protrusion (IP; 93.3% vs. 62.8%; P=0.0214), and thrombus (93.3% vs. 51.4%; P=0.0028) was significantly higher in the ST than reference group. The maximum median (interquartile range) IP arc was significantly larger in the ST than reference group (265° [217°–360°] vs. 128° [81.4°–212°], respectively; P180° was significantly higher in the ST than reference group (100% vs. 58.3%, respectively; P=0.0265). Conclusions:IP with a large arc was a significant feature on post-stent OCT in patients with ST.博士（医学）・甲第868号・令和5年3月15

ERO R1 in CL0939+4713 field - Evidence for an S0-like galaxy at z \sim 1.5

We present further observations of the extremely red object ERO J094258+4659.2, identified by \citet{iye00} as ERO R1 in their deep images of the cluster A851. We estimate its redshift independently by eight-band photometric redshift determination and cross-correlation of a new H-band spectrum with the optical spectra of local E/S0 galaxies, and conclude that it lies at $z \sim 1.5$. Although its colors are consistent both with an elliptical galaxy and an S0 galaxy at that redshift, its elongated shape and exponential luminosity profile suggest the presence of an evolved stellar disk component. We rule out the possibility that these properties are strongly influenced by gravitational lensing by the foreground cluster, and therefore conclude that this object is more likely to be an S0-like galaxy, rather than a lensed elliptical. The H-band spectrum does not show strong H$\alpha$ emission and the star formation rate therefore appears to be very modest. The presence of such a galaxy with an apparently relaxed disk of stars at this high redshift provides a new and strong constraint on theoretical models which aim to explain the formation and evolution of galaxies.Comment: 23 pages, 9 figures, Submitted to the Astrophysical Journa