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A study on the physical properties and reproducibility of marketed foods used to measure continuous masticatory and deglutition functions and the reproducibility and validity of the generated chewing sounds.
No full text日本大学博士（歯学）doctoral thesi
Quantitative assessment of ostemyelitis in the mandible using digital imaging
No full text日本大学博士（歯学）doctoral thesi
Whole-rock Major Element Chemistry for Eruptive Products of Asama Volcano Group: Summary of Analytical Data of 1,922 Samples
No full textThe 1,922 analytical data for major element compositions of eruptive products of Asama volcano group are summarized. The major element chemistry for eruptive products of Asama volcano group is grouped to the Gippa, SenninMaekake, Hotokeiwa and Hanareyama compositional trends. The Gippa, Sennin-Maekake, Hotokeiwa and Hanareyama
compositional trends consist of mafic andesite (54 to 58 wt.％ SiO2
), silicic andesite (59 to 64 wt.％ SiO2
), dacite to rhyolite
(65 to 75 wt.％ SiO2
) and dacite to rhyolite (68 to 75wt.％ SiO2
), respectively. The Hanareyama compositional trend is
higher in K2O and lower in Na2O, TiO2 and P2O5 than the Hotokeiwa compositional trend. The Gippa compositional trend
is formed by a crystallization differentiation of olivine and clinopyroxene. The Hotokeiwa compositional trend is produced
by a crystallization differentiation of plagioclase and pyroxenes, and slightly affected by magma mixing. The origin of
Hanareyama compositional trend is different from that of the Hotokeiwa compositional trend. The Sennin-Maekake compositional trend is a result of magma mixing between the magma of Gippa compositional trend (mafic end-member
magma) and that of the Hotokeiwa compositional trend (felsic end-member magma). The Hotokeiwa compositional trend
cannot be derived from the Gippa compositional trend by a simple crystallization differentiation and the origin of both
magmatic trends is different; both end-member magmas are mixed and mingled in the magma reservoir and conduit during the eruptiondepartmental bulletin pape
Changes in Groundwater Environment at the Excavation Site: Laying Stress on the Effect on Water Level and Turbidity under the Dewatering Work
No full textGroundwater has been increasing its importance as an available resource with increasing human activity in the history. Concurrently, the development of groundwater resources has sometimes been counterproductive with environmental
damage due to improper utilization. Under the stressed hydrological environment, a practice of groundwater governance
is a fundamental subject for sustainable water use. In addition, the need for a re-evaluation of groundwater has recently
become more important from the view point of its indispensable role in the hydrological cycle. To look at the matter from
a different angle, excavation and/or grouting often make pollutants as suspended materials to transport in aquifers with a
considerable distance at construction sites. Once groundwater turns turbid by digging a depression, even if the pollutants
are not supplied anymore, a contaminated aquifer would not be recovered for so many years due to slow flushing action in
the saturated zone. In the present paper, the influence of dewatering work on groundwater level and turbidity has been
investigated with special reference to the circumstances of a presence of production well. Under the assumption that the
aquifer is homogeneous, infinite in areal extent, and is of the same thickness throughout, the influence sphere of changes
in groundwater level and the necessary distance for lowering a turbidity are represented by using some numerical formulae, which are an essential piece of information to protect vulnerable groundwater resources.departmental bulletin pape
Automation of Laboratory Apparatus Using Arduino: A Case Study on Computer Control of a Friction Testing Apparatus
No full textLaboratory experiments on geological materials such as soil and rock are used to measure mechanical and hydraulic
parameters and to simulate new physical phenomena. A testing apparatus for the experiment controls the load and displacement of the specimen through the piston with a motor or an oil pressure and the piston can be controlled manually
or by computer. However, the manually-controlled apparatuses exhibit limitations with accuracy when conducting complex tests such as when displacement velocity undergoes step changes. In this study, the friction testing apparatus controlled manually was modified to be computer-controlled using Arduino in order to simulate stick-slip. Our results demonstrate the precise control of the timing of displacement velocity and enable complex tests, such as feedback control.
Therefore, we believe that modifying to computer-controlled apparatus via Arduino is an effective method of expanding
the range of testing.departmental bulletin pape
Optimization of the Preparation Method for Homogeneous Ceramic SrFeO3-δ
No full textThe properties of ceramics are affected by the preparation method and raw materials. We prepared SrFeO3-δ from
the same raw materials, SrCO3 and Fe3O4, using the Pechini method and solid-state reaction method and compared the
properties of the samples. In addition, we also prepared SrFeO3-δ employing Fe(NO3)3•9H2O and Fe2O3 as Fe sources,
which are commonly used as raw materials in the Pechini method and solid-state reaction method, respectively. The
preparation method and raw materials were optimized, and a comparison of the two preparation methods using the same
raw materials revealed that the Pechini method was superior to the solid-state reaction method for the preparation of a
highly dense, homogeneous specimen. The specimen prepared from Fe(NO3)3•9H2O using the Pechini method showed
the highest cation homogeneity and a good sinterability.departmental bulletin pape
Jacques Derrida’s Interpretation of Robinson Crusoe: How to Question the World with “Animals”
No full textdepartmental bulletin pape
The New Courteous Language “NARIMASU Honorific”: From the Viewpoint of “NARU”
No full textdepartmental bulletin pape