Low Tongue Strength and the Number of Teeth Present Are Associated with Cognitive Decline in Older Japanese Dental Outpatients: A Cross-Sectional Study

福岡歯科大学2020年

Oxidative Stress-induced Interaction between Autophagy and Cellular Senescence in Human Keratinocytes

福岡歯科大学2017年

Metal Oxide Gas Sensors: Sensitivity and Influencing Factors

Conductometric semiconducting metal oxide gas sensors have been widely used and investigated in the detection of gases. Investigations have indicated that the gas sensing process is strongly related to surface reactions, so one of the important parameters of gas sensors, the sensitivity of the metal oxide based materials, will change with the factors influencing the surface reactions, such as chemical components, surface-modification and microstructures of sensing layers, temperature and humidity. In this brief review, attention will be focused on changes of sensitivity of conductometric semiconducting metal oxide gas sensors due to the five factors mentioned above

Selection of a Vegetable Water-Retaining Material and Its Effects on the Growth and Quality of Cucumber under Drought Stress Part 1 : Selection of a Vegetable Water-Retaining Material

Water-retention capacities of moss, common water hyacinth and Late　Juncellus were compared with that of SAP (super absorbent polymers), a presently used chemical water-retaining material. Moss was highest in the amount of water retained per unit weight among the three vegetable materials and showed a somewhat higher water-retention capacity than did SAP. However, it is difficult to collect moss enough for use as a water-retaining material, and collection of a large amount of moss easily lead to destruction of environment. Moss had a high potential but actually was not appropriate for using as a water-retaining material in crop production. Instead, common water hyacinth was targeted. It is an invading aquatic macrophyte with a potential for rapid growth and spreading, and has caused serious damage to local environment. Though its water-retention capacity was not so good as those of moss and SAP, common water hyacinth was easy to be collected and gave benefit to the soil water content and the growth of cucumber in the similar level as SAP. Results indicated that common water hyacinth could be used in the future as a vegetable water-retaining material

Selection of a Vegetable Water-Retaining Material and Its Effects on the Growth and Quality of Cucumber under Drought Stress Part 2 : Effects of Common Water Hyacinth on the Growth and Quality of Cucumber

Common water hyacinth was selected as a vegetable water-retaining material suitable to crop cultivation in the area prone to seasonal drought in Part 1 of this study. A pot experiment was carried out to examine the effects of common water hyacinth on the growth and quality of cucumber under drought stress. Common water hyacinth was added at three levels equivalent to 1/2, 1 and 2 times of the water-retention capacity of SAP (super absorbent polymers), a presently used chemical water-retaining material. Addition of common water hyacinth improved the growth and quality of cucumber. At the same time, it increased the soil water content by 9.2 to 11.9%, depending on the growth stages, from the level of the control, which was equivalent to the increase by addition of SAP. Results of the pot experiment suggested that common water hyacinth could be a good alternative to SAP

Variation and Controlling Factores of the Organic Matter Level in Soils after Conversion of Arable Land into Forest Land in Shandong Province of China

The selected chemical properties were examined for soils after conversion of arable land into forest land in Shandong Province of China. Soils were collected at three locations, and they were different in the landform (flat land vs slope land), duration of tree growing (20 years vs 10 years), or species of tree (white birch vs apple tree). The pH ranged from 6.4 to 7.1 and the total nitrogen content was in a range of 0.51 to 1.10 g/kg. Their levels varied with the species of tree, and hence the pH and organic nitrogen content of soils were regarded to be controlled by the fertility management. The organic matter content ranged from 11.6 to 28.7 g/kg. It was affected by the landform at the 1% significant level but was insignificantly affected by the duration of tree growing. The organic matter content varied with the human activity. It was significantly higher for the forest land without human activity and grown in the natural condition than for the forest land with human activity such as taking away of fallen leaves by farmers or growing of apple trees subjected to fertility management. Under the human activity, the organic matter content of soil was significantly higher for growing of apple trees than for taking away of fallen leaves

The Ethnomusicological Documentary: Some Principles and Guidelines

I have never understood what constitute the canons of \u201cvisual anthropology,\u201d at least when it is simply understood as a tool for describing and distributing various kinds of research or for understanding events by making visual recordings of them (through either photography or film) and mounting, editing and publishing these recordings: in other words, when it does not take into account native strategies of visualization or the function and structure of images within the culture being investigated. Contemporary \u201cvisual anthropology\u201d (or a specific field of \u201cmusical iconography\u201d) might tailor its own codes in relation to the techniques and objects it investigates, at least in contexts where photographic and filmic recording tools are widely used. Images do not provide an abstract and absolute account of the documented events; rather, they refer to specific moments of a particular event: that procession, that feast, that moment of everyday life. In these images, the participants\u2019 individual characteristics and the role they play in constructing the rite and articulating the relationships between the rite and the system underlying it (between rite and myth, between action and formalization) are always present and unavoidable. While an ethnographic documentary has certain specific characteristics (in that its expressive codes must take into account the expressive codes of the action or rite being staged and documented), an ethnomusicological documentary has certain restrictions and additional peculiarities based on the fact that the musical content unfolds through its own temporal progression, a progression that has a powerful affect on the editing process. Furthermore, ethnomusicological work has certain specific characteristics in relation to the pertinence and significance of documentary material and its editing. Like any ethnological investigation of ritual and representative actions, ethnomusicology essentially deals with actions that have been deliberately staged in more or less conscious and explicit ways. Any documentation of an event involving the production of organized sound is necessarily a representation that essentially stages a staging. It thus involves methodological and ethical implications that are quite different than those arising from efforts to observe and document non-performative actions