48 research outputs found
Rick Baldoz\u27s The Third Asiatic Invasion: Empire and Migration in Filipino America, 1898–1946
No full textConsideration about a tale of War named Taiheki and the author
No full textThis paper examines the relationship between Taiheiki story (Taihei means peace) that is a tale of War In medieval times and the Ashikaga Shognate. There are three considerations about it. The first is about the author of Taiheiki named Kojima priest who was introduced in the diary of the lord Toin Kinsada in that time. Imagawa Ryoushun who was a relative of the Ashikaga farnily made cornments about the author of Taiheiki in his book “Nan Taiheiki\u22. And Kojima priest was introduced in Kouhukuji Temple chronicle. The second specified the term that Taiheiki was written by using chronological table. The third clanfied the reasons why the Ashikaga Shognate tried to decide Taiheiki story that was written by Kojima priest as the history of the Ashikaga Shognate and reorganaize it. The results of this study are as follows， (1) The author of Taiheiki story was Kojima priest as Toin Kinsada wrote in his diary. It had been thought that the priests of Rishu sect (one of the Buddihst groups) wrote Taiheiki. Kojima priest might get the information about Taiheiki from this priests group. (2) Taiheiki that was written by Kojima priest covered the term that was from the “Shouchu no hen\u22 that the Emperor Godaigo attempted to overthrow the Kamakura Shogunate to the time when the Ashikaga Shogunate got its power. (3) The Ashikaga Shogunate tried to adopt Taiheiki that was written by Kojima priest as the history of the Ashikaga Shougunate. Because Taiheiki included the process that the Ashikaga Shogunate came into power. It might be reorganized as the history of the Ashikaga Shougunate
Ecological value of gravel pit ponds for floodplain wetland fish
No full textFloodplain wetlands support high biodiversity, but they have been degraded and geographically fragmented due to human activities. Some types of human-created waterbodies have received growing attention as alternative habitats for conserving wetland biodiversity. Gravel pit ponds (GPPs) are human-created wetlands formed when a gravel pit is excavated at or below the water table and filled with groundwater. Differences in community structure among GPPs and floodplain wetlands with respect to habitat characteristics are scarcely known, resulting in insufficient evaluations of the ecological value of GPPs for floodplain wetland species. In this study, we evaluated the ecological value of GPPs for wetland fishes in floodplain landscapes. We surveyed fish abundance, community composition, and 10 environmental factors in GPPs and two types of floodplain ponds (remnant ponds and river backwaters) to clarify the biotic and abiotic differences among the pond types. Environmental factors were similar among the pond types, with only water temperature and the distance from the main channel to the pond significantly lower in river backwaters. The richness and abundance of native fish species did not differ among the pond types, but species composition did. Rhynchocypris percnura sachalinensis, Carassius sp., and Lethenteron sp. N (one of the two cryptic species of Lethenteron reissneri) were selected as indicator species in GPPs, remnant ponds, and river backwaters, respectively. These results indicate that GPPs provide valuable habitats for wetland fishes in floodplain landscapes and support regional gamma diversity. Since many species inhabited the GPPs in this study, including red list species, appropriate management of GPPs is important to conserve wetland fishes
Diel migration pattern of pink salmon fry in small streams
No full textDownstream migration is a critical stage in the anadromous salmonid life cycle, but previous studies have shown different results between rivers or surveys for the diel downstream migration pattern of the fry of the pink salmon Oncorhynchus gorbuscha. We investigated the diel migration pattern of pink salmon fry in three small streams. Our results showed that pink salmon fry migrate mainly within a few hours after sunset; 89.9% of migration occurred between 18:00 and 23:00. Therefore, the results indicated that sunset time influences the diel migration pattern of pink salmon fry in small streams. This pattern could be a predator-avoidance behaviour
Pink salmon productivity is driven by catchment hydrogeomorphology and can decline under a changing climate
No full textIncreased flood magnitude and frequency due to climate change can reduce the population productivity of organisms such as amphibian and fish species in river and stream systems; therefore, conserving habitats that maintain high productivity under such conditions is crucial. Here, we examined the relationship between the freshwater productivity of anadromous salmonids (measured as fry migrating to the ocean per spawner) and catchment hydrogeomorphology and identified the characteristics of rivers and streams that are prone to flood disturbance.We surveyed the spawner abundance and number of fry of pink salmon (Oncorhynchus gorbuscha) and measured environmental factors, including the average catchment slope and stream power, as characteristics of hydrogeomorphology, in 10 streams in the Shiretoko Peninsula, northern Japan. We then used generalised linear mixed models to predict the freshwater productivity of pink salmon populations in each catchment across the study region under current and future climatic conditions.The productivity of pink salmon in the study region differed among the sampled catchments and was negatively affected by the average catchment slope, stream power, and maximum daily precipitation averaged over the catchment. Namely, flood disturbance reduced the freshwater productivity of pink salmon, and salmon productivity in individual catchments was explained by catchment hydrogeomorphology. The predicted future productivity with increased precipitation was also lower than the current productivity.Our approach can be applied to other salmonids that have similar spawning behaviour to pink salmon. Highly productive catchments under the future climatic conditions predicted by the present study should be prioritised for conservation to ensure a sustainable salmonid population.On publication, the article title was changed. The title of manuscript : Pink salmon productivity is driven by watershed hydrogeomorphology and can decline under a changing climat
Local structure and NO adsorption/desorption property of Pd2+ cations at different paired Al sites in CHA zeolite
No full textRecently, Pd-exchanged CHA zeolites (Pd-CHA) have attracted attention as promising passive NOx adsorbers (PNAs) for reducing NOx emissions during the cold start period of a vehicle engine. In this work, the relationship between the local structures and the NO adsorption/desorption properties of the Pd cations in CHA zeolites was investigated. Pd cation formation and NO adsorption were theoretically explored by density functional theory (DFT) calculations for different paired Al sites in six-/eight-membered rings (6MR/8MR). Furthermore, we prepared a series of Pd-CHAs with different Pd loadings (0.5-5.4 wt%) and evaluated their NO adsorption/desorption properties by in situ infrared (IR) spectroscopy and temperature-programmed desorption (TPD) measurements. The increase in the Pd loading resulted in a shift in the NO desorption temperature toward a higher temperature regime. This phenomenon was ascribed to the increase in the proportion of less stable Pd cations, resulting in improved NO adsorption. Furthermore, the effect of Al distribution on the NO adsorption property of Pd-CHA was examined using CHA zeolites containing different proportions of paired Al sites in 6MR while maintaining similar Si/Al ratios (Si/Al = 12.0-16.5). The present study, based on a combination of theoretical and experimental techniques, shows that the NO adsorption/desorption properties over Pd-CHA can be tuned by controlling the Pd loading amount and the type of paired Al sites
Otolith microstructure of brown sole Pseudopleuronectes herzensteini: validation of daily ring formation and the occurrence of microstructure denoting metamorphosis
No full textExamination of β‐Protein Deposits in Alzheimer's Cerebral Cortices by Three‐Dimensional Observation
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