743 research outputs found
Figure 3 in A new family of diminutive zooxanthellate zoanthids (Hexacorallia: Zoantharia)
No full textFigure 3. Nanozoanthus harenaceus sp. nov. from Okinawa Island. A, colony with open polyps in situ, specimen RUMF-2G-04372 (paratype2), Oura Bay, Okinawa, Japan, 20 m depth, 13 May 2012. B, contracted polyps in situ, specimen RUMF-2G-04372 (paratype2), Cape Maeda, Okinawa, Japan, 22 m depth, 21 December 2011. C, part of a colony of preserved specimen fixed by 5–10% formalin seawater, specimen NSMT-Co1555 (holotype), Cape Maeda, Okinawa, Japan, 9 m depth, 15 February 2012. Scale bars: approx. 1 mm.Published as part of Fujii, Takuma & Reimer, James Davis, 2013, A new family of diminutive zooxanthellate zoanthids (Hexacorallia: Zoantharia), pp. 509-522 in Zoological Journal of the Linnean Society 169 (3) on page 515, DOI: 10.1111/zoj.12075, http://zenodo.org/record/489047
Nitrate Contamination of Groundwater and Soil Management
No full textThe Japanese Government set the environmental quality standard for nitrate (NO3) in groundwater at 10 mg N L1 in 1998, based on a level considered acceptable for avoiding infant methemoglobinemia. In 1998, 6.3% of groundwater in Japan contained NO3 exceeding 10 mg L¡¦, with agriculture regarded to be a primary source of the NO3 (Environmental Agency, Japan, 1999). This paper aims to define the mechanisms of NO3 contamination of groundwater associated with soil management in arable land.
The author gives an overview of the relation between nitrogen (N) fertilization and groundwater contamination. First of all, the utilization efficiency of N fertilizers for outdoor cultivation of vegetables is usually 50% or less (Nishio, 2001; Vance, 2001). Although N fertilizer is essential for crop production, excessive N could leach out of arable soils and eventually cause NO3 contamination of groundwater. However, conversely, excessive N is necessary as insurance in some cases, such as when there is heavy rainfall immediately after fertilization. It should be also noted that some vegetables physiologically require a high content of N in soil even at harvest.
Nitrate leaching from different fertilizers was monitored for 7 years and the data were evaluated using an N and water balance equation (Maeda et al., 2003). Excessive N from chemical fertilizers caused substantial NO3 leaching, while compost application was promising to achieve high yields and low N leaching during a few years but led to the same level of NO3 leaching as that in the plots subjected to chemical fertilizer application over longer periods of time. Thus, it is of importance to predict the N mineralization rates both for manure and for soil under natural conditions. Experimental results of this kind can provide full information on N dynamics in fields for policy decisions or regulations to reduce NO3 leaching while maintaining crop yields. Likewise, we must consider other influencing factors such as soil types, climatic conditions, and cropping systems for this purpose
Formation of high-quality SiO₂/β-Ga₂O₃(001) MOS structures: The role of post-deposition annealing
No full textKobayashi Takuma et al., Appl. Phys. Lett. 126, 012108 (2025) https://doi.org/10.1063/5.0245289.We investigated the effect of post-deposition annealing on the electrical characteristics of SiO₂/β-Ga₂O₃(001) MOS structures. While oxygen annealing effectively improves the interface properties, it induces acceptor defects in Ga₂O₃, leading to a decrease in net donor density. With the combination of oxygen and nitrogen annealing, carrier compensation was suppressed, and a low interface state density of about 1 × 10¹¹ cm⁻² eV⁻¹ was obtained near the conduction band edge of Ga₂O₃. High immunity against positive gate bias stress was also confirmed
Topographic Effects on Land‐surface Water/Heat Fluxes
No full text本研究では、地形が土壌水分場とその結果生じる水・熱フラックスに与える影響を、物理ベースの数値土壌モデルを用いて議論する。土壌水分場と地中流を計算するために、鉛直分解能が高い2次元土壌モデルが開発され、数値解法には修正ピカール法を用いている。計算時間を節約するために7層土壌モデルが導入され、SiBと結合して森林地を想定して潜熱・頭熱フラックスの時空間分布を求めた。土壌水分は2っの要因、すなわち水分ストレスと熱容量により、熱収支を制御する。In this study, the effect of tol)ogral)lly on soil moisture field and resultant heat/water fluxes is discussed with physically‐based numerical soil models.Two‐dimensional soil models based on Richards'equation with fine vertical resoluion have been developed to calculate the soil moisture field and subsurface water flow.Modified Picard iteration method is used for the numerical scheme. Seven‐layer soil model is introduced from the computational view of point.The model is coupled with SiB to calculatethe temporal and spatial distribution of sensible and latent heat fluxes. Soil moisture field can control the heat budget by two factors‐water stress and heat capacity.本研究では、地形が土壌水分場とその結果生じる水・熱フラックスに与える影響を、物理ベースの数値土壌モデルを用いて議論する。土壌水分場と地中流を計算するために、鉛直分解能が高い2次元土壌モデルが開発され、数値解法には修正ピカール法を用いている。計算時間を節約するために7層土壌モデルが導入され、SiBと結合して森林地を想定して潜熱・頭熱フラックスの時空間分布を求めた。土壌水分は2っの要因、すなわち水分ストレスと熱容量により、熱収支を制御する。In this study, the effect of tol)ogral)lly on soil moisture field and resultant heat/water fluxes is discussed with physically‐based numerical soil models.Two‐dimensional soil models based on Richards'equation with fine vertical resoluion have been developed to calculate the soil moisture field and subsurface water flow.Modified Picard iteration method is used for the numerical scheme. Seven‐layer soil model is introduced from the computational view of point.The model is coupled with SiB to calculatethe temporal and spatial distribution of sensible and latent heat fluxes. Soil moisture field can control the heat budget by two factors‐water stress and heat capacity
Identifying patients at high risk of heparin-induced thrombocytopenia-associated thrombosis with a platelet activation assay using flow cytometry
No full textDevelopment of environment-friendly aquaculture technologies and practices
No full textThe significant role of aquaculture in providing food security has been recognized, not only through its contribution to food supply, but also through the promotion of economic and social well-being. Aquaculture is also considered as a relatively recent and underdeveloped sector as compared to agriculture and animal husbandry, and there is a huge, unfulfilled potential in many countries, particularly in the region. The recently concluded ASEAN-SEAFDEC Conference “Fish for the People” highlighted the importance of sustainable fisheries for regional food security, and the need for comprehensive and cooperative efforts, resolutions and plan of actions among all stakeholders. With the projected shortfall in the supply of fish and fishery products to meet the demands of an ever-increasing population, aquaculture is looked upon as a sustainable source of renewable food resources.
One of the main programs of the SEAFDEC Aquaculture Department (AQD) is geared towards the development of sustainable aquaculture that is technically feasible, economically viable, environment-friendly, and socially equitable. An important subprogram is the development of environment-friendly aquaculture technologies and practices. The objectives of the subprogram are: 1) to develop and promote efficient aquaculture systems and designs for maximum sustainable productivity; 2) to devise and determine appropriate design, equipment, and operation and management practices that optimize utilization of resources and inputs, minimize adverse impacts on the environment, and sustain biological/ecological diversity; 3) to demonstrate, verify, adopt, refine, and promote proven aquaculture technologies and practices; and 4) to advance the social, economic, cultural, and policy importance of the aquaculture sector at the local, national, and regional level. At present, the main research areas are in nutrient dynamics of aquaculture systems, feed and waste management, development of culture systems, including bioremediation strategies, conservation and sustainable utilization of resources for aquaculture, and socio-economic and policy issues in aquaculture. In addition, verification and refinement of developed aquaculture technologies, in support of re search and training activities, are conducted to explore the potential of aquaculture technologies for commercial adoption and demonstrate appropriate technologies and responsible aquaculture practices. The paper presents an overview of current research activities by the author, and with involvement of other researchers at SEAFDEC AQD, including future plans under this and related programs
Artificial Class Simulations Based on Multi-Agent Systems with Non-disclosure Value Selection
No full textapplication/pdfAlthough bullying at school is one of serious social problems to be solved, no effective measures have been established. As an approach from computer science, Maeda et al. made an agent-based model for a process building the friendship among a group and have considered and researched the generation mechanism of isolated or excluded agents regarded as potential victims of bullying. In this paper, we investigate the effect of introducing non-disclosure value selection into the agent-based model proposed by Maeda et al.conference pape
« Parsadan Gorgijanidze’s Exile in Shushtar: A Biographical Episode of a Georgian Official in the Service of the Safavids ». Journal of Persianate Studies 1, 2, 2008, p. 218-229.
No full textAt the beginning of the article, Maeda states his opinion that many Safavid ġolāms were far from severing all ties with their homeland: here the Author agrees with the views of other modern Safavid scholars but he (rightly, in the opinion of the present reviewer) contradicts what one often reads in the scholarly literature concerning military slavery in the Muslim world in general. Maeda is also correct in stating that “by introducing the institution of the royal ġolāms, the Safavids imported..
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