Sedimentation and Tectonics of Zenisu Ridge, Eastern Nankai Trough and Suruga Trough Regions

Great amounts of terrigenous sediments have been deposited as trough wedge sedimentary layers in the Suruga Trough and the Eastern Nankai Trough since the late Pliocene. Trough wedge sedimentary layers show some cyclic sedimentation correlating with the block collision. The cycle has originated from an intence uplift of land with the block collision and ended in the deformation of trough-fill layers with the plate subduction. In one cycle, an unconformity has been formed in the region around the uplifted mass and in the trough region. Although the unconformities originally relate to the tectonic movement due to one block collision, these are out of phase in time between the two regions. The unconformity in the trough region is younger than the one in the landward region because sediment transportation requires a duration. This cyclic sedimentation is recognized at two times since the Pliocene. One has originated from the Tanzawa block collision in the early Pliocene, and the other has begun at the Izu block collision since the middle Pleistocene. Characteristic intraplate deformation with backthrusts has important effects on the formation of unconformity and sedimentary basin, and on the deformation of trough-fill layers. The active subduction zone has migrated seaward from the present trough region. The trough-fill sediments have been transported by turbidity currents through the Nankai Deep Sea Channel. Main source areas of these sediments are the Fuji and Kano River regions and the Tenryu River region which are situated on the Southern Fossa Magna. The Nankai Deep Sea Channel has developed as a main passing way of these sediments and has been formed by turbidity currents. This channel shows the typical meandering pattern and channel migration and its topography closely resembles subaerial river topography. The meandering pattern has been strongly controlled by the slope of trough floor which is on the convergent plate boundary. The rapidly decreasing sedimentation rate of trough-fill sediments in the late Pleistocene reflects the dam-up effects of deformed trough-fill layers, intraplate deformation and the Izu Spur collision in the last cycle of the trough sedimentation

Fieldservers and Sensor Service Grid as Real-time Monitoring Infrastructure for Ubiquitous Sensor Networks

The fieldserver is an Internet based observation robot that can provide an outdoor solution for monitoring environmental parameters in real-time. The data from its sensors can be collected to a central server infrastructure and published on the Internet. The information from the sensor network will contribute to monitoring and modeling on various environmental issues in Asia, including agriculture, food, pollution, disaster, climate change etc. An initiative called Sensor Asia is developing an infrastructure called Sensor Service Grid (SSG), which integrates fieldservers and Web GIS to realize easy and low cost installation and operation of ubiquitous field sensor networks

Level Assignment for Various Photoluminescence Bands of Tm^<3+> Ions in LiYF_4 Crystal

　Photoluminescence and excitation spectra of Tm ions in LiYF_4 crystal have been investigated at 12 K. The luminescence is investigated under excitation with lights of 780, 680, 460, 360 and 266 nm wavelengths. The emission bands are observed to depend on the excitation wavelength, e.g. two emission bands at 1229 and 1201 nm are generated by the 460 nm excitation but not by 780, 680, 360 and 266 nm excitation. Comparing the emission spectra with the excitation spectra for the IR and visible emissions, we suggest the level assignment for the observed luminescence bands including the 288 and 286 nm UV emission bands

A Case of Granulocyte-Colony Stimulating Factor-Producing Hepatocellular Carcinoma Confirmed by Immunohistochemistry

Granulocyte-colony stimulating factor (G-CSF) is a naturally occurring glycoprotein that stimulates the proliferation and maturation of precursor cells in the bone marrow into fully differentiated neutrophils. Several reports of G-CSF-producing malignant tumors have been published, but scarcely any in the hepatobiliary system, such as in hepatocellular carcinoma (HCC). Here, we encountered a 69-yr-old man with a hepatic tumor who had received right hepatic resection. He showed leukocytosis of 25,450/µL along with elevated serum G-CSF. Histological examination of surgical samples demonstrated immunohistochemical staining for G-CSF, but not for G-CSF receptor. The patient survived without recurrence for four years, but ultimately passed away with multiple bone metastases. In light of the above, clinicians may consider G-CSF-producing HCC when encountering patients with leukocytosis and a hepatic tumor. More cases are needed to clarify the clinical picture of G-CSF-producing HCC

Optical spectroscopy of Yb3+ centers in BaMgF4 ferroelectric crystal

The following article appeared in Journal of Applied Physics 110.6 (2011): 063102 and may be found at http://scitation.aip.org/content/aip/journal/jap/110/6/10.1063/1.3638040We report on the optical characterization of Yb3+ doped BaMgF4+ nonlinear fluoride crystal grown by the Czochralski technique. Low temperature absorption spectroscopy reveals that Yb3+ incorporates into the matrix at four well differentiated centers. High resolution site selective experiments have been performed to determine the energy level schemes associated with the major Yb3+ centers detected in the system. The fluorescence decay times recorded at 10 K under selective excitation are analyzed for each Yb3+ center. The spectroscopic behavior of the codoped Yb3+:Na+:BaMgF4+ system has been also investigated. Codoping with Na+ eliminates two Yb3+ centers present in the singly doped Yb3+:BaMgF 4+ crystal. The charge compensation mechanisms and site location for Yb3+ in the fluoride matrix are discussedThis work has been supported by Spanish MICINN under Contract Nos. MAT2010-17443 and MAT2009-06580, Comunidad de Madrid under Grant No. PHAMA S2009/MAT-1756 and Universidad Autónoma de Madrid under Contract No. CCG10-UAM/MAT-5290